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.gitattributes

@@ -59,3 +59,6 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.webm filter=lfs diff=lfs merge=lfs -text
 fuzz-tooling/infra/cifuzz/test_data/timeout_fuzzer filter=lfs diff=lfs merge=lfs -text
 fuzz-tooling/projects/curl/pkgs/curl_fuzzer/corpora/curl_fuzzer_rtsp/oss-fuzz-issue-6937 filter=lfs diff=lfs merge=lfs -text
+local-test-freerdp-full-01/afc-freerdp/resources/font/OpenSans-VariableFont_wdth,wght.ttf filter=lfs diff=lfs merge=lfs -text
+local-test-freerdp-full-01/afc-freerdp/resources/font/OpenSans-Italic-VariableFont_wdth,wght.ttf filter=lfs diff=lfs merge=lfs -text
+local-test-freerdp-full-01/afc-freerdp/server/Sample/rfx_test.pcap filter=lfs diff=lfs merge=lfs -text

local-test-freerdp-delta-01/afc-freerdp/channels/ainput/CMakeLists.txt

@@ -0,0 +1,27 @@
+# FreeRDP: A Remote Desktop Protocol Implementation
+# FreeRDP cmake build script
+#
+# Copyright 2022 Armin Novak <anovak@thincast.com>
+# Copyright 2022 Thincast Technologies GmbH
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+define_channel("ainput")
+
+if(WITH_CLIENT_CHANNELS)
+  add_channel_client(${MODULE_PREFIX} ${CHANNEL_NAME})
+endif()
+
+if(WITH_SERVER_CHANNELS)
+  add_channel_server(${MODULE_PREFIX} ${CHANNEL_NAME})
+endif()

local-test-freerdp-delta-01/afc-freerdp/channels/ainput/ChannelOptions.cmake

@@ -0,0 +1,20 @@
+set(OPTION_DEFAULT ON)
+set(OPTION_CLIENT_DEFAULT ON)
+set(OPTION_SERVER_DEFAULT ON)
+
+define_channel_options(
+  NAME
+  "ainput"
+  TYPE
+  "dynamic"
+  DESCRIPTION
+  "Advanced Input Virtual Channel Extension"
+  SPECIFICATIONS
+  "[XXXXX]"
+  DEFAULT
+  ${OPTION_DEFAULT}
+  CLIENT_DEFAULT
+  ${OPTION_CLIENT_DEFAULT}
+  SERVER_DEFAULT
+  ${OPTION_SERVER_DEFAULT}
+)

local-test-freerdp-delta-01/afc-freerdp/channels/ainput/client/CMakeLists.txt

@@ -0,0 +1,27 @@
+# FreeRDP: A Remote Desktop Protocol Implementation
+# FreeRDP cmake build script
+#
+# Copyright 2022 Armin Novak <anovak@thincast.com>
+# Copyright 2022 Thincast Technologies GmbH
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+define_channel_client("ainput")
+
+set(${MODULE_PREFIX}_SRCS ainput_main.c ainput_main.h)
+
+set(${MODULE_PREFIX}_LIBS winpr)
+
+include_directories(..)
+
+add_channel_client_library(${MODULE_PREFIX} ${MODULE_NAME} ${CHANNEL_NAME} TRUE "DVCPluginEntry")

local-test-freerdp-delta-01/afc-freerdp/channels/ainput/client/ainput_main.c

@@ -0,0 +1,183 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Advanced Input Virtual Channel Extension
+ *
+ * Copyright 2022 Armin Novak <anovak@thincast.com>
+ * Copyright 2022 Thincast Technologies GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <winpr/crt.h>
+#include <winpr/assert.h>
+#include <winpr/stream.h>
+#include <winpr/sysinfo.h>
+
+#include "ainput_main.h"
+#include <freerdp/channels/log.h>
+#include <freerdp/client/channels.h>
+#include <freerdp/client/ainput.h>
+#include <freerdp/channels/ainput.h>
+
+#include "../common/ainput_common.h"
+
+#define TAG CHANNELS_TAG("ainput.client")
+
+typedef struct AINPUT_PLUGIN_ AINPUT_PLUGIN;
+struct AINPUT_PLUGIN_
+{
+	GENERIC_DYNVC_PLUGIN base;
+	AInputClientContext* context;
+	UINT32 MajorVersion;
+	UINT32 MinorVersion;
+};
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT ainput_on_data_received(IWTSVirtualChannelCallback* pChannelCallback, wStream* data)
+{
+	UINT16 type = 0;
+	AINPUT_PLUGIN* ainput = NULL;
+	GENERIC_CHANNEL_CALLBACK* callback = (GENERIC_CHANNEL_CALLBACK*)pChannelCallback;
+
+	WINPR_ASSERT(callback);
+	WINPR_ASSERT(data);
+
+	ainput = (AINPUT_PLUGIN*)callback->plugin;
+	WINPR_ASSERT(ainput);
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, data, 2))
+		return ERROR_NO_DATA;
+	Stream_Read_UINT16(data, type);
+	switch (type)
+	{
+		case MSG_AINPUT_VERSION:
+			if (!Stream_CheckAndLogRequiredLength(TAG, data, 8))
+				return ERROR_NO_DATA;
+			Stream_Read_UINT32(data, ainput->MajorVersion);
+			Stream_Read_UINT32(data, ainput->MinorVersion);
+			break;
+		default:
+			WLog_WARN(TAG, "Received unsupported message type 0x%04" PRIx16, type);
+			break;
+	}
+
+	return CHANNEL_RC_OK;
+}
+
+static UINT ainput_send_input_event(AInputClientContext* context, UINT64 flags, INT32 x, INT32 y)
+{
+	AINPUT_PLUGIN* ainput = NULL;
+	GENERIC_CHANNEL_CALLBACK* callback = NULL;
+	BYTE buffer[32] = { 0 };
+	UINT64 time = 0;
+	wStream sbuffer = { 0 };
+	wStream* s = Stream_StaticInit(&sbuffer, buffer, sizeof(buffer));
+
+	WINPR_ASSERT(s);
+	WINPR_ASSERT(context);
+
+	time = GetTickCount64();
+	ainput = (AINPUT_PLUGIN*)context->handle;
+	WINPR_ASSERT(ainput);
+
+	if (ainput->MajorVersion != AINPUT_VERSION_MAJOR)
+	{
+		WLog_WARN(TAG, "Unsupported channel version %" PRIu32 ".%" PRIu32 ", aborting.",
+		          ainput->MajorVersion, ainput->MinorVersion);
+		return CHANNEL_RC_UNSUPPORTED_VERSION;
+	}
+	callback = ainput->base.listener_callback->channel_callback;
+	WINPR_ASSERT(callback);
+
+	{
+		char ebuffer[128] = { 0 };
+		WLog_VRB(TAG, "sending timestamp=0x%08" PRIx64 ", flags=%s, %" PRId32 "x%" PRId32, time,
+		         ainput_flags_to_string(flags, ebuffer, sizeof(ebuffer)), x, y);
+	}
+
+	/* Message type */
+	Stream_Write_UINT16(s, MSG_AINPUT_MOUSE);
+
+	/* Event data */
+	Stream_Write_UINT64(s, time);
+	Stream_Write_UINT64(s, flags);
+	Stream_Write_INT32(s, x);
+	Stream_Write_INT32(s, y);
+	Stream_SealLength(s);
+
+	/* ainput back what we have received. AINPUT does not have any message IDs. */
+	WINPR_ASSERT(callback->channel);
+	WINPR_ASSERT(callback->channel->Write);
+	return callback->channel->Write(callback->channel, (ULONG)Stream_Length(s), Stream_Buffer(s),
+	                                NULL);
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT ainput_on_close(IWTSVirtualChannelCallback* pChannelCallback)
+{
+	GENERIC_CHANNEL_CALLBACK* callback = (GENERIC_CHANNEL_CALLBACK*)pChannelCallback;
+
+	free(callback);
+
+	return CHANNEL_RC_OK;
+}
+
+static UINT init_plugin_cb(GENERIC_DYNVC_PLUGIN* base, rdpContext* rcontext, rdpSettings* settings)
+{
+	AINPUT_PLUGIN* ainput = (AINPUT_PLUGIN*)base;
+	AInputClientContext* context = (AInputClientContext*)calloc(1, sizeof(AInputClientContext));
+	if (!context)
+		return CHANNEL_RC_NO_MEMORY;
+
+	context->handle = (void*)base;
+	context->AInputSendInputEvent = ainput_send_input_event;
+
+	ainput->context = context;
+	ainput->base.iface.pInterface = context;
+	return CHANNEL_RC_OK;
+}
+
+static void terminate_plugin_cb(GENERIC_DYNVC_PLUGIN* base)
+{
+	AINPUT_PLUGIN* ainput = (AINPUT_PLUGIN*)base;
+	free(ainput->context);
+}
+
+static const IWTSVirtualChannelCallback ainput_functions = { ainput_on_data_received,
+	                                                         NULL, /* Open */
+	                                                         ainput_on_close, NULL };
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+FREERDP_ENTRY_POINT(UINT VCAPITYPE ainput_DVCPluginEntry(IDRDYNVC_ENTRY_POINTS* pEntryPoints))
+{
+	return freerdp_generic_DVCPluginEntry(pEntryPoints, TAG, AINPUT_DVC_CHANNEL_NAME,
+	                                      sizeof(AINPUT_PLUGIN), sizeof(GENERIC_CHANNEL_CALLBACK),
+	                                      &ainput_functions, init_plugin_cb, terminate_plugin_cb);
+}

local-test-freerdp-delta-01/afc-freerdp/channels/ainput/client/ainput_main.h

@@ -0,0 +1,40 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Advanced Input Virtual Channel Extension
+ *
+ * Copyright 2022 Armin Novak <anovak@thincast.com>
+ * Copyright 2022 Thincast Technologies GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FREERDP_CHANNEL_AINPUT_CLIENT_MAIN_H
+#define FREERDP_CHANNEL_AINPUT_CLIENT_MAIN_H
+
+#include <freerdp/config.h>
+#include <freerdp/dvc.h>
+#include <freerdp/types.h>
+#include <freerdp/addin.h>
+#include <freerdp/channels/log.h>
+
+#define DVC_TAG CHANNELS_TAG("ainput.client")
+#ifdef WITH_DEBUG_DVC
+#define DEBUG_DVC(...) WLog_DBG(DVC_TAG, __VA_ARGS__)
+#else
+#define DEBUG_DVC(...) \
+	do                 \
+	{                  \
+	} while (0)
+#endif
+
+#endif /* FREERDP_CHANNEL_AINPUT_CLIENT_MAIN_H */

local-test-freerdp-delta-01/afc-freerdp/channels/ainput/common/ainput_common.h

@@ -0,0 +1,59 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Audio Input Redirection Virtual Channel
+ *
+ * Copyright 2022 Armin Novak <anovak@thincast.com>
+ * Copyright 2022 Thincast Technologies GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FREERDP_INT_AINPUT_COMMON_H
+#define FREERDP_INT_AINPUT_COMMON_H
+
+#include <winpr/string.h>
+
+#include <freerdp/channels/ainput.h>
+
+static INLINE const char* ainput_flags_to_string(UINT64 flags, char* buffer, size_t size)
+{
+	char number[32] = { 0 };
+
+	if (flags & AINPUT_FLAGS_HAVE_REL)
+		winpr_str_append("AINPUT_FLAGS_HAVE_REL", buffer, size, "|");
+	if (flags & AINPUT_FLAGS_WHEEL)
+		winpr_str_append("AINPUT_FLAGS_WHEEL", buffer, size, "|");
+	if (flags & AINPUT_FLAGS_MOVE)
+		winpr_str_append("AINPUT_FLAGS_MOVE", buffer, size, "|");
+	if (flags & AINPUT_FLAGS_DOWN)
+		winpr_str_append("AINPUT_FLAGS_DOWN", buffer, size, "|");
+	if (flags & AINPUT_FLAGS_REL)
+		winpr_str_append("AINPUT_FLAGS_REL", buffer, size, "|");
+	if (flags & AINPUT_FLAGS_BUTTON1)
+		winpr_str_append("AINPUT_FLAGS_BUTTON1", buffer, size, "|");
+	if (flags & AINPUT_FLAGS_BUTTON2)
+		winpr_str_append("AINPUT_FLAGS_BUTTON2", buffer, size, "|");
+	if (flags & AINPUT_FLAGS_BUTTON3)
+		winpr_str_append("AINPUT_FLAGS_BUTTON3", buffer, size, "|");
+	if (flags & AINPUT_XFLAGS_BUTTON1)
+		winpr_str_append("AINPUT_XFLAGS_BUTTON1", buffer, size, "|");
+	if (flags & AINPUT_XFLAGS_BUTTON2)
+		winpr_str_append("AINPUT_XFLAGS_BUTTON2", buffer, size, "|");
+
+	_snprintf(number, sizeof(number), "[0x%08" PRIx64 "]", flags);
+	winpr_str_append(number, buffer, size, " ");
+
+	return buffer;
+}
+
+#endif /* FREERDP_INT_AINPUT_COMMON_H */

local-test-freerdp-delta-01/afc-freerdp/channels/ainput/server/CMakeLists.txt

@@ -0,0 +1,24 @@
+# FreeRDP: A Remote Desktop Protocol Implementation
+# FreeRDP cmake build script
+#
+# Copyright 2022 Armin Novak <anovak@thincast.com>
+# Copyright 2022 Thincast Technologies GmbH
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+define_channel_server("ainput")
+
+set(${MODULE_PREFIX}_SRCS ainput_main.c)
+
+set(${MODULE_PREFIX}_LIBS freerdp)
+add_channel_server_library(${MODULE_PREFIX} ${MODULE_NAME} ${CHANNEL_NAME} FALSE "DVCPluginEntry")

local-test-freerdp-delta-01/afc-freerdp/channels/ainput/server/ainput_main.c

@@ -0,0 +1,597 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Advanced Input Virtual Channel Extension
+ *
+ * Copyright 2022 Armin Novak <anovak@thincast.com>
+ * Copyright 2022 Thincast Technologies GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *	 http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <winpr/crt.h>
+#include <winpr/assert.h>
+#include <winpr/synch.h>
+#include <winpr/thread.h>
+#include <winpr/stream.h>
+#include <winpr/sysinfo.h>
+
+#include <freerdp/freerdp.h>
+#include <freerdp/channels/ainput.h>
+#include <freerdp/server/ainput.h>
+#include <freerdp/channels/log.h>
+
+#include "../common/ainput_common.h"
+
+#define TAG CHANNELS_TAG("ainput.server")
+
+typedef enum
+{
+	AINPUT_INITIAL,
+	AINPUT_OPENED,
+	AINPUT_VERSION_SENT,
+} eAInputChannelState;
+
+typedef struct
+{
+	ainput_server_context context;
+
+	BOOL opened;
+
+	HANDLE stopEvent;
+
+	HANDLE thread;
+	void* ainput_channel;
+
+	DWORD SessionId;
+
+	BOOL isOpened;
+	BOOL externalThread;
+
+	/* Channel state */
+	eAInputChannelState state;
+
+	wStream* buffer;
+} ainput_server;
+
+static UINT ainput_server_context_poll(ainput_server_context* context);
+static BOOL ainput_server_context_handle(ainput_server_context* context, HANDLE* handle);
+static UINT ainput_server_context_poll_int(ainput_server_context* context);
+
+static BOOL ainput_server_is_open(ainput_server_context* context)
+{
+	ainput_server* ainput = (ainput_server*)context;
+
+	WINPR_ASSERT(ainput);
+	return ainput->isOpened;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT ainput_server_open_channel(ainput_server* ainput)
+{
+	DWORD Error = 0;
+	HANDLE hEvent = NULL;
+	DWORD StartTick = 0;
+	DWORD BytesReturned = 0;
+	PULONG pSessionId = NULL;
+
+	WINPR_ASSERT(ainput);
+
+	if (WTSQuerySessionInformationA(ainput->context.vcm, WTS_CURRENT_SESSION, WTSSessionId,
+	                                (LPSTR*)&pSessionId, &BytesReturned) == FALSE)
+	{
+		WLog_ERR(TAG, "WTSQuerySessionInformationA failed!");
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	ainput->SessionId = (DWORD)*pSessionId;
+	WTSFreeMemory(pSessionId);
+	hEvent = WTSVirtualChannelManagerGetEventHandle(ainput->context.vcm);
+	StartTick = GetTickCount();
+
+	while (ainput->ainput_channel == NULL)
+	{
+		if (WaitForSingleObject(hEvent, 1000) == WAIT_FAILED)
+		{
+			Error = GetLastError();
+			WLog_ERR(TAG, "WaitForSingleObject failed with error %" PRIu32 "!", Error);
+			return Error;
+		}
+
+		ainput->ainput_channel = WTSVirtualChannelOpenEx(ainput->SessionId, AINPUT_DVC_CHANNEL_NAME,
+		                                                 WTS_CHANNEL_OPTION_DYNAMIC);
+
+		Error = GetLastError();
+
+		if (Error == ERROR_NOT_FOUND)
+		{
+			WLog_DBG(TAG, "Channel %s not found", AINPUT_DVC_CHANNEL_NAME);
+			break;
+		}
+
+		if (ainput->ainput_channel)
+		{
+			UINT32 channelId = 0;
+			BOOL status = TRUE;
+
+			channelId = WTSChannelGetIdByHandle(ainput->ainput_channel);
+
+			IFCALLRET(ainput->context.ChannelIdAssigned, status, &ainput->context, channelId);
+			if (!status)
+			{
+				WLog_ERR(TAG, "context->ChannelIdAssigned failed!");
+				return ERROR_INTERNAL_ERROR;
+			}
+
+			break;
+		}
+
+		if (GetTickCount() - StartTick > 5000)
+		{
+			WLog_WARN(TAG, "Timeout opening channel %s", AINPUT_DVC_CHANNEL_NAME);
+			break;
+		}
+	}
+
+	return ainput->ainput_channel ? CHANNEL_RC_OK : ERROR_INTERNAL_ERROR;
+}
+
+static UINT ainput_server_send_version(ainput_server* ainput)
+{
+	ULONG written = 0;
+	wStream* s = NULL;
+
+	WINPR_ASSERT(ainput);
+
+	s = ainput->buffer;
+	WINPR_ASSERT(s);
+
+	Stream_SetPosition(s, 0);
+	if (!Stream_EnsureCapacity(s, 10))
+	{
+		WLog_WARN(TAG, "[%s] out of memory", AINPUT_DVC_CHANNEL_NAME);
+		return ERROR_OUTOFMEMORY;
+	}
+
+	Stream_Write_UINT16(s, MSG_AINPUT_VERSION);
+	Stream_Write_UINT32(s, AINPUT_VERSION_MAJOR); /* Version (4 bytes) */
+	Stream_Write_UINT32(s, AINPUT_VERSION_MINOR); /* Version (4 bytes) */
+
+	WINPR_ASSERT(Stream_GetPosition(s) <= UINT32_MAX);
+	if (!WTSVirtualChannelWrite(ainput->ainput_channel, Stream_BufferAs(s, char),
+	                            (ULONG)Stream_GetPosition(s), &written))
+	{
+		WLog_ERR(TAG, "WTSVirtualChannelWrite failed!");
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	return CHANNEL_RC_OK;
+}
+
+static UINT ainput_server_recv_mouse_event(ainput_server* ainput, wStream* s)
+{
+	UINT error = CHANNEL_RC_OK;
+	UINT64 flags = 0;
+	UINT64 time = 0;
+	INT32 x = 0;
+	INT32 y = 0;
+	char buffer[128] = { 0 };
+
+	WINPR_ASSERT(ainput);
+	WINPR_ASSERT(s);
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 24))
+		return ERROR_NO_DATA;
+
+	Stream_Read_UINT64(s, time);
+	Stream_Read_UINT64(s, flags);
+	Stream_Read_INT32(s, x);
+	Stream_Read_INT32(s, y);
+
+	WLog_VRB(TAG, "received: time=0x%08" PRIx64 ", flags=%s, %" PRId32 "x%" PRId32, time,
+	         ainput_flags_to_string(flags, buffer, sizeof(buffer)), x, y);
+	IFCALLRET(ainput->context.MouseEvent, error, &ainput->context, time, flags, x, y);
+
+	return error;
+}
+
+static HANDLE ainput_server_get_channel_handle(ainput_server* ainput)
+{
+	void* buffer = NULL;
+	DWORD BytesReturned = 0;
+	HANDLE ChannelEvent = NULL;
+
+	WINPR_ASSERT(ainput);
+
+	if (WTSVirtualChannelQuery(ainput->ainput_channel, WTSVirtualEventHandle, &buffer,
+	                           &BytesReturned) == TRUE)
+	{
+		if (BytesReturned == sizeof(HANDLE))
+			ChannelEvent = *(HANDLE*)buffer;
+
+		WTSFreeMemory(buffer);
+	}
+
+	return ChannelEvent;
+}
+
+static DWORD WINAPI ainput_server_thread_func(LPVOID arg)
+{
+	DWORD nCount = 0;
+	HANDLE events[2] = { 0 };
+	ainput_server* ainput = (ainput_server*)arg;
+	UINT error = CHANNEL_RC_OK;
+	DWORD status = 0;
+
+	WINPR_ASSERT(ainput);
+
+	nCount = 0;
+	events[nCount++] = ainput->stopEvent;
+
+	while ((error == CHANNEL_RC_OK) && (WaitForSingleObject(events[0], 0) != WAIT_OBJECT_0))
+	{
+		switch (ainput->state)
+		{
+			case AINPUT_OPENED:
+				events[1] = ainput_server_get_channel_handle(ainput);
+				nCount = 2;
+				status = WaitForMultipleObjects(nCount, events, FALSE, 100);
+				switch (status)
+				{
+					case WAIT_TIMEOUT:
+					case WAIT_OBJECT_0 + 1:
+					case WAIT_OBJECT_0:
+						error = ainput_server_context_poll_int(&ainput->context);
+						break;
+					case WAIT_FAILED:
+					default:
+						WLog_WARN(TAG, "[%s] Wait for open failed", AINPUT_DVC_CHANNEL_NAME);
+						error = ERROR_INTERNAL_ERROR;
+						break;
+				}
+				break;
+			case AINPUT_VERSION_SENT:
+				status = WaitForMultipleObjects(nCount, events, FALSE, INFINITE);
+				switch (status)
+				{
+					case WAIT_TIMEOUT:
+					case WAIT_OBJECT_0 + 1:
+					case WAIT_OBJECT_0:
+						error = ainput_server_context_poll_int(&ainput->context);
+						break;
+
+					case WAIT_FAILED:
+					default:
+						WLog_WARN(TAG, "[%s] Wait for version failed", AINPUT_DVC_CHANNEL_NAME);
+						error = ERROR_INTERNAL_ERROR;
+						break;
+				}
+				break;
+			default:
+				error = ainput_server_context_poll_int(&ainput->context);
+				break;
+		}
+	}
+
+	(void)WTSVirtualChannelClose(ainput->ainput_channel);
+	ainput->ainput_channel = NULL;
+
+	if (error && ainput->context.rdpcontext)
+		setChannelError(ainput->context.rdpcontext, error,
+		                "ainput_server_thread_func reported an error");
+
+	ExitThread(error);
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT ainput_server_open(ainput_server_context* context)
+{
+	ainput_server* ainput = (ainput_server*)context;
+
+	WINPR_ASSERT(ainput);
+
+	if (!ainput->externalThread && (ainput->thread == NULL))
+	{
+		ainput->stopEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
+		if (!ainput->stopEvent)
+		{
+			WLog_ERR(TAG, "CreateEvent failed!");
+			return ERROR_INTERNAL_ERROR;
+		}
+
+		ainput->thread = CreateThread(NULL, 0, ainput_server_thread_func, ainput, 0, NULL);
+		if (!ainput->thread)
+		{
+			WLog_ERR(TAG, "CreateEvent failed!");
+			(void)CloseHandle(ainput->stopEvent);
+			ainput->stopEvent = NULL;
+			return ERROR_INTERNAL_ERROR;
+		}
+	}
+	ainput->isOpened = TRUE;
+
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT ainput_server_close(ainput_server_context* context)
+{
+	UINT error = CHANNEL_RC_OK;
+	ainput_server* ainput = (ainput_server*)context;
+
+	WINPR_ASSERT(ainput);
+
+	if (!ainput->externalThread && ainput->thread)
+	{
+		(void)SetEvent(ainput->stopEvent);
+
+		if (WaitForSingleObject(ainput->thread, INFINITE) == WAIT_FAILED)
+		{
+			error = GetLastError();
+			WLog_ERR(TAG, "WaitForSingleObject failed with error %" PRIu32 "", error);
+			return error;
+		}
+
+		(void)CloseHandle(ainput->thread);
+		(void)CloseHandle(ainput->stopEvent);
+		ainput->thread = NULL;
+		ainput->stopEvent = NULL;
+	}
+	if (ainput->externalThread)
+	{
+		if (ainput->state != AINPUT_INITIAL)
+		{
+			(void)WTSVirtualChannelClose(ainput->ainput_channel);
+			ainput->ainput_channel = NULL;
+			ainput->state = AINPUT_INITIAL;
+		}
+	}
+	ainput->isOpened = FALSE;
+
+	return error;
+}
+
+static UINT ainput_server_initialize(ainput_server_context* context, BOOL externalThread)
+{
+	UINT error = CHANNEL_RC_OK;
+	ainput_server* ainput = (ainput_server*)context;
+
+	WINPR_ASSERT(ainput);
+
+	if (ainput->isOpened)
+	{
+		WLog_WARN(TAG, "Application error: AINPUT channel already initialized, calling in this "
+		               "state is not possible!");
+		return ERROR_INVALID_STATE;
+	}
+	ainput->externalThread = externalThread;
+	return error;
+}
+
+ainput_server_context* ainput_server_context_new(HANDLE vcm)
+{
+	ainput_server* ainput = (ainput_server*)calloc(1, sizeof(ainput_server));
+
+	if (!ainput)
+		return NULL;
+
+	ainput->context.vcm = vcm;
+	ainput->context.Open = ainput_server_open;
+	ainput->context.IsOpen = ainput_server_is_open;
+	ainput->context.Close = ainput_server_close;
+	ainput->context.Initialize = ainput_server_initialize;
+	ainput->context.Poll = ainput_server_context_poll;
+	ainput->context.ChannelHandle = ainput_server_context_handle;
+
+	ainput->buffer = Stream_New(NULL, 4096);
+	if (!ainput->buffer)
+		goto fail;
+	return &ainput->context;
+fail:
+	WINPR_PRAGMA_DIAG_PUSH
+	WINPR_PRAGMA_DIAG_IGNORED_MISMATCHED_DEALLOC
+	ainput_server_context_free(&ainput->context);
+	WINPR_PRAGMA_DIAG_POP
+	return NULL;
+}
+
+void ainput_server_context_free(ainput_server_context* context)
+{
+	ainput_server* ainput = (ainput_server*)context;
+	if (ainput)
+	{
+		ainput_server_close(context);
+		Stream_Free(ainput->buffer, TRUE);
+	}
+	free(ainput);
+}
+
+static UINT ainput_process_message(ainput_server* ainput)
+{
+	BOOL rc = 0;
+	UINT error = ERROR_INTERNAL_ERROR;
+	ULONG BytesReturned = 0;
+	ULONG ActualBytesReturned = 0;
+	UINT16 MessageId = 0;
+	wStream* s = NULL;
+
+	WINPR_ASSERT(ainput);
+	WINPR_ASSERT(ainput->ainput_channel);
+
+	s = ainput->buffer;
+	WINPR_ASSERT(s);
+
+	Stream_SetPosition(s, 0);
+	rc = WTSVirtualChannelRead(ainput->ainput_channel, 0, NULL, 0, &BytesReturned);
+	if (!rc)
+		goto out;
+
+	if (BytesReturned < 2)
+	{
+		error = CHANNEL_RC_OK;
+		goto out;
+	}
+
+	if (!Stream_EnsureRemainingCapacity(s, BytesReturned))
+	{
+		WLog_ERR(TAG, "Stream_EnsureRemainingCapacity failed!");
+		error = CHANNEL_RC_NO_MEMORY;
+		goto out;
+	}
+
+	if (WTSVirtualChannelRead(ainput->ainput_channel, 0, Stream_BufferAs(s, char),
+	                          (ULONG)Stream_Capacity(s), &ActualBytesReturned) == FALSE)
+	{
+		WLog_ERR(TAG, "WTSVirtualChannelRead failed!");
+		goto out;
+	}
+
+	if (BytesReturned != ActualBytesReturned)
+	{
+		WLog_ERR(TAG, "WTSVirtualChannelRead size mismatch %" PRId32 ", expected %" PRId32,
+		         ActualBytesReturned, BytesReturned);
+		goto out;
+	}
+
+	Stream_SetLength(s, ActualBytesReturned);
+	Stream_Read_UINT16(s, MessageId);
+
+	switch (MessageId)
+	{
+		case MSG_AINPUT_MOUSE:
+			error = ainput_server_recv_mouse_event(ainput, s);
+			break;
+
+		default:
+			WLog_ERR(TAG, "audin_server_thread_func: unknown MessageId %" PRIu8 "", MessageId);
+			break;
+	}
+
+out:
+	if (error)
+		WLog_ERR(TAG, "Response failed with error %" PRIu32 "!", error);
+
+	return error;
+}
+
+BOOL ainput_server_context_handle(ainput_server_context* context, HANDLE* handle)
+{
+	ainput_server* ainput = (ainput_server*)context;
+	WINPR_ASSERT(ainput);
+	WINPR_ASSERT(handle);
+
+	if (!ainput->externalThread)
+	{
+		WLog_WARN(TAG, "[%s] externalThread fail!", AINPUT_DVC_CHANNEL_NAME);
+		return FALSE;
+	}
+	if (ainput->state == AINPUT_INITIAL)
+	{
+		WLog_WARN(TAG, "[%s] state fail!", AINPUT_DVC_CHANNEL_NAME);
+		return FALSE;
+	}
+	*handle = ainput_server_get_channel_handle(ainput);
+	return TRUE;
+}
+
+UINT ainput_server_context_poll_int(ainput_server_context* context)
+{
+	ainput_server* ainput = (ainput_server*)context;
+	UINT error = ERROR_INTERNAL_ERROR;
+
+	WINPR_ASSERT(ainput);
+
+	switch (ainput->state)
+	{
+		case AINPUT_INITIAL:
+			error = ainput_server_open_channel(ainput);
+			if (error)
+				WLog_ERR(TAG, "ainput_server_open_channel failed with error %" PRIu32 "!", error);
+			else
+				ainput->state = AINPUT_OPENED;
+			break;
+		case AINPUT_OPENED:
+		{
+			union
+			{
+				BYTE* pb;
+				void* pv;
+			} buffer;
+			DWORD BytesReturned = 0;
+
+			buffer.pv = NULL;
+
+			if (WTSVirtualChannelQuery(ainput->ainput_channel, WTSVirtualChannelReady, &buffer.pv,
+			                           &BytesReturned) != TRUE)
+			{
+				WLog_ERR(TAG, "WTSVirtualChannelReady failed,");
+			}
+			else
+			{
+				if (*buffer.pb != 0)
+				{
+					error = ainput_server_send_version(ainput);
+					if (error)
+						WLog_ERR(TAG, "audin_server_send_version failed with error %" PRIu32 "!",
+						         error);
+					else
+						ainput->state = AINPUT_VERSION_SENT;
+				}
+				else
+					error = CHANNEL_RC_OK;
+			}
+			WTSFreeMemory(buffer.pv);
+		}
+		break;
+		case AINPUT_VERSION_SENT:
+			error = ainput_process_message(ainput);
+			break;
+
+		default:
+			WLog_ERR(TAG, "AINPUT channel is in invalid state %d", ainput->state);
+			break;
+	}
+
+	return error;
+}
+
+UINT ainput_server_context_poll(ainput_server_context* context)
+{
+	ainput_server* ainput = (ainput_server*)context;
+
+	WINPR_ASSERT(ainput);
+	if (!ainput->externalThread)
+	{
+		WLog_WARN(TAG, "[%s] externalThread fail!", AINPUT_DVC_CHANNEL_NAME);
+		return ERROR_INTERNAL_ERROR;
+	}
+	return ainput_server_context_poll_int(context);
+}

local-test-freerdp-delta-01/afc-freerdp/channels/audin/CMakeLists.txt

@@ -0,0 +1,26 @@
+# FreeRDP: A Remote Desktop Protocol Implementation
+# FreeRDP cmake build script
+#
+# Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+define_channel("audin")
+
+if(WITH_CLIENT_CHANNELS)
+  add_channel_client(${MODULE_PREFIX} ${CHANNEL_NAME})
+endif()
+
+if(WITH_SERVER_CHANNELS)
+  add_channel_server(${MODULE_PREFIX} ${CHANNEL_NAME})
+endif()

local-test-freerdp-delta-01/afc-freerdp/channels/audin/ChannelOptions.cmake

@@ -0,0 +1,24 @@
+set(OPTION_DEFAULT ON)
+set(OPTION_CLIENT_DEFAULT ON)
+set(OPTION_SERVER_DEFAULT ON)
+
+if(ANDROID)
+  set(OPTION_SERVER_DEFAULT OFF)
+endif()
+
+define_channel_options(
+  NAME
+  "audin"
+  TYPE
+  "dynamic"
+  DESCRIPTION
+  "Audio Input Redirection Virtual Channel Extension"
+  SPECIFICATIONS
+  "[MS-RDPEAI]"
+  DEFAULT
+  ${OPTION_DEFAULT}
+  CLIENT_DEFAULT
+  ${OPTION_CLIENT_DEFAULT}
+  SERVER_DEFAULT
+  ${OPTION_SERVER_DEFAULT}
+)

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/CMakeLists.txt

@@ -0,0 +1,58 @@
+# FreeRDP: A Remote Desktop Protocol Implementation
+# FreeRDP cmake build script
+#
+# Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+define_channel_client("audin")
+
+set(${MODULE_PREFIX}_SRCS audin_main.c audin_main.h)
+
+set(${MODULE_PREFIX}_LIBS freerdp winpr)
+
+include_directories(..)
+
+add_channel_client_library(${MODULE_PREFIX} ${MODULE_NAME} ${CHANNEL_NAME} TRUE "DVCPluginEntry")
+
+if(WITH_OSS)
+  add_channel_client_subsystem(${MODULE_PREFIX} ${CHANNEL_NAME} "oss" "")
+endif()
+
+if(WITH_ALSA)
+  add_channel_client_subsystem(${MODULE_PREFIX} ${CHANNEL_NAME} "alsa" "")
+endif()
+
+if(WITH_PULSE)
+  add_channel_client_subsystem(${MODULE_PREFIX} ${CHANNEL_NAME} "pulse" "")
+endif()
+
+if(WITH_OPENSLES)
+  add_channel_client_subsystem(${MODULE_PREFIX} ${CHANNEL_NAME} "opensles" "")
+endif()
+
+if(WITH_WINMM)
+  add_channel_client_subsystem(${MODULE_PREFIX} ${CHANNEL_NAME} "winmm" "")
+endif()
+
+if(WITH_MACAUDIO)
+  add_channel_client_subsystem(${MODULE_PREFIX} ${CHANNEL_NAME} "mac" "")
+endif()
+
+if(WITH_SNDIO)
+  add_channel_client_subsystem(${MODULE_PREFIX} ${CHANNEL_NAME} "sndio" "")
+endif()
+
+if(WITH_IOSAUDIO)
+  add_channel_client_subsystem(${MODULE_PREFIX} ${CHANNEL_NAME} "ios" "")
+endif()

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/alsa/CMakeLists.txt

@@ -0,0 +1,29 @@
+# FreeRDP: A Remote Desktop Protocol Implementation
+# FreeRDP cmake build script
+#
+# Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+define_channel_client_subsystem("audin" "alsa" "")
+
+find_package(ALSA REQUIRED)
+
+set(${MODULE_PREFIX}_SRCS audin_alsa.c)
+
+set(${MODULE_PREFIX}_LIBS winpr freerdp ${ALSA_LIBRARIES})
+
+include_directories(..)
+include_directories(SYSTEM ${ALSA_INCLUDE_DIRS})
+
+add_channel_client_subsystem_library(${MODULE_PREFIX} ${MODULE_NAME} ${CHANNEL_NAME} "" TRUE "")

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/alsa/audin_alsa.c

@@ -0,0 +1,463 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Audio Input Redirection Virtual Channel - ALSA implementation
+ *
+ * Copyright 2010-2011 Vic Lee
+ * Copyright 2015 Thincast Technologies GmbH
+ * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <winpr/crt.h>
+#include <winpr/synch.h>
+#include <winpr/thread.h>
+#include <winpr/cmdline.h>
+#include <winpr/wlog.h>
+
+#include <alsa/asoundlib.h>
+
+#include <freerdp/freerdp.h>
+#include <freerdp/addin.h>
+#include <freerdp/channels/rdpsnd.h>
+
+#include "audin_main.h"
+
+typedef struct
+{
+	IAudinDevice iface;
+
+	char* device_name;
+	UINT32 frames_per_packet;
+	AUDIO_FORMAT aformat;
+
+	HANDLE thread;
+	HANDLE stopEvent;
+
+	AudinReceive receive;
+	void* user_data;
+
+	rdpContext* rdpcontext;
+	wLog* log;
+	size_t bytes_per_frame;
+} AudinALSADevice;
+
+static snd_pcm_format_t audin_alsa_format(UINT32 wFormatTag, UINT32 bitPerChannel)
+{
+	switch (wFormatTag)
+	{
+		case WAVE_FORMAT_PCM:
+			switch (bitPerChannel)
+			{
+				case 16:
+					return SND_PCM_FORMAT_S16_LE;
+
+				case 8:
+					return SND_PCM_FORMAT_S8;
+
+				default:
+					return SND_PCM_FORMAT_UNKNOWN;
+			}
+
+		default:
+			return SND_PCM_FORMAT_UNKNOWN;
+	}
+}
+
+static BOOL audin_alsa_set_params(AudinALSADevice* alsa, snd_pcm_t* capture_handle)
+{
+	int error = 0;
+	SSIZE_T s = 0;
+	UINT32 channels = alsa->aformat.nChannels;
+	snd_pcm_hw_params_t* hw_params = NULL;
+	snd_pcm_format_t format =
+	    audin_alsa_format(alsa->aformat.wFormatTag, alsa->aformat.wBitsPerSample);
+
+	if ((error = snd_pcm_hw_params_malloc(&hw_params)) < 0)
+	{
+		WLog_Print(alsa->log, WLOG_ERROR, "snd_pcm_hw_params_malloc (%s)", snd_strerror(error));
+		return FALSE;
+	}
+
+	snd_pcm_hw_params_any(capture_handle, hw_params);
+	snd_pcm_hw_params_set_access(capture_handle, hw_params, SND_PCM_ACCESS_RW_INTERLEAVED);
+	snd_pcm_hw_params_set_format(capture_handle, hw_params, format);
+	snd_pcm_hw_params_set_rate_near(capture_handle, hw_params, &alsa->aformat.nSamplesPerSec, NULL);
+	snd_pcm_hw_params_set_channels_near(capture_handle, hw_params, &channels);
+	snd_pcm_hw_params(capture_handle, hw_params);
+	snd_pcm_hw_params_free(hw_params);
+	snd_pcm_prepare(capture_handle);
+	if (channels > UINT16_MAX)
+		return FALSE;
+	s = snd_pcm_format_size(format, 1);
+	if ((s < 0) || (s > UINT16_MAX))
+		return FALSE;
+	alsa->aformat.nChannels = (UINT16)channels;
+	alsa->bytes_per_frame = (size_t)s * channels;
+	return TRUE;
+}
+
+static DWORD WINAPI audin_alsa_thread_func(LPVOID arg)
+{
+	DWORD error = CHANNEL_RC_OK;
+	BYTE* buffer = NULL;
+	AudinALSADevice* alsa = (AudinALSADevice*)arg;
+
+	WINPR_ASSERT(alsa);
+
+	WLog_Print(alsa->log, WLOG_DEBUG, "in");
+
+	snd_pcm_t* capture_handle = NULL;
+	const int rc = snd_pcm_open(&capture_handle, alsa->device_name, SND_PCM_STREAM_CAPTURE, 0);
+	if (rc < 0)
+	{
+		WLog_Print(alsa->log, WLOG_ERROR, "snd_pcm_open (%s)", snd_strerror(rc));
+		error = CHANNEL_RC_INITIALIZATION_ERROR;
+		goto out;
+	}
+
+	if (!audin_alsa_set_params(alsa, capture_handle))
+	{
+		WLog_Print(alsa->log, WLOG_ERROR, "audin_alsa_set_params failed");
+		goto out;
+	}
+
+	buffer =
+	    (BYTE*)calloc(alsa->frames_per_packet + alsa->aformat.nBlockAlign, alsa->bytes_per_frame);
+
+	if (!buffer)
+	{
+		WLog_Print(alsa->log, WLOG_ERROR, "calloc failed!");
+		error = CHANNEL_RC_NO_MEMORY;
+		goto out;
+	}
+
+	while (1)
+	{
+		size_t frames = alsa->frames_per_packet;
+		const DWORD status = WaitForSingleObject(alsa->stopEvent, 0);
+
+		if (status == WAIT_FAILED)
+		{
+			error = GetLastError();
+			WLog_Print(alsa->log, WLOG_ERROR, "WaitForSingleObject failed with error %" PRIu32 "!",
+			           error);
+			break;
+		}
+
+		if (status == WAIT_OBJECT_0)
+		{
+			WLog_Print(alsa->log, WLOG_DEBUG, "alsa->stopEvent requests termination");
+			break;
+		}
+
+		snd_pcm_sframes_t framesRead = snd_pcm_readi(capture_handle, buffer, frames);
+
+		if (framesRead == 0)
+			continue;
+
+		if (framesRead == -EPIPE)
+		{
+			const int res = snd_pcm_recover(capture_handle, (int)framesRead, 0);
+			if (res < 0)
+				WLog_Print(alsa->log, WLOG_WARN, "snd_pcm_recover (%s)", snd_strerror(res));
+
+			continue;
+		}
+		else if (framesRead < 0)
+		{
+			WLog_Print(alsa->log, WLOG_ERROR, "snd_pcm_readi (%s)", snd_strerror((int)framesRead));
+			error = ERROR_INTERNAL_ERROR;
+			break;
+		}
+
+		error = alsa->receive(&alsa->aformat, buffer,
+		                      WINPR_ASSERTING_INT_CAST(size_t, framesRead) * alsa->bytes_per_frame,
+		                      alsa->user_data);
+
+		if (error)
+		{
+			WLog_Print(alsa->log, WLOG_ERROR, "audin_alsa_thread_receive failed with error %ld",
+			           error);
+			break;
+		}
+	}
+
+	free(buffer);
+
+	if (capture_handle)
+	{
+		const int res = snd_pcm_close(capture_handle);
+		if (res < 0)
+			WLog_Print(alsa->log, WLOG_WARN, "snd_pcm_close (%s)", snd_strerror(res));
+	}
+
+out:
+	WLog_Print(alsa->log, WLOG_DEBUG, "out");
+
+	if (error && alsa->rdpcontext)
+		setChannelError(alsa->rdpcontext, error, "audin_alsa_thread_func reported an error");
+
+	ExitThread(error);
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_alsa_free(IAudinDevice* device)
+{
+	AudinALSADevice* alsa = (AudinALSADevice*)device;
+
+	if (alsa)
+		free(alsa->device_name);
+
+	free(alsa);
+	return CHANNEL_RC_OK;
+}
+
+static BOOL audin_alsa_format_supported(IAudinDevice* device, const AUDIO_FORMAT* format)
+{
+	if (!device || !format)
+		return FALSE;
+
+	switch (format->wFormatTag)
+	{
+		case WAVE_FORMAT_PCM:
+			if (format->cbSize == 0 && (format->nSamplesPerSec <= 48000) &&
+			    (format->wBitsPerSample == 8 || format->wBitsPerSample == 16) &&
+			    (format->nChannels == 1 || format->nChannels == 2))
+			{
+				return TRUE;
+			}
+
+			break;
+
+		default:
+			return FALSE;
+	}
+
+	return FALSE;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_alsa_set_format(IAudinDevice* device, const AUDIO_FORMAT* format,
+                                  UINT32 FramesPerPacket)
+{
+	AudinALSADevice* alsa = (AudinALSADevice*)device;
+
+	if (!alsa || !format)
+		return ERROR_INVALID_PARAMETER;
+
+	alsa->aformat = *format;
+	alsa->frames_per_packet = FramesPerPacket;
+
+	if (audin_alsa_format(format->wFormatTag, format->wBitsPerSample) == SND_PCM_FORMAT_UNKNOWN)
+		return ERROR_INTERNAL_ERROR;
+
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_alsa_open(IAudinDevice* device, AudinReceive receive, void* user_data)
+{
+	AudinALSADevice* alsa = (AudinALSADevice*)device;
+
+	if (!device || !receive || !user_data)
+		return ERROR_INVALID_PARAMETER;
+
+	alsa->receive = receive;
+	alsa->user_data = user_data;
+
+	if (!(alsa->stopEvent = CreateEvent(NULL, TRUE, FALSE, NULL)))
+	{
+		WLog_Print(alsa->log, WLOG_ERROR, "CreateEvent failed!");
+		goto error_out;
+	}
+
+	if (!(alsa->thread = CreateThread(NULL, 0, audin_alsa_thread_func, alsa, 0, NULL)))
+	{
+		WLog_Print(alsa->log, WLOG_ERROR, "CreateThread failed!");
+		goto error_out;
+	}
+
+	return CHANNEL_RC_OK;
+error_out:
+	(void)CloseHandle(alsa->stopEvent);
+	alsa->stopEvent = NULL;
+	return ERROR_INTERNAL_ERROR;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_alsa_close(IAudinDevice* device)
+{
+	UINT error = CHANNEL_RC_OK;
+	AudinALSADevice* alsa = (AudinALSADevice*)device;
+
+	if (!alsa)
+		return ERROR_INVALID_PARAMETER;
+
+	if (alsa->stopEvent)
+	{
+		(void)SetEvent(alsa->stopEvent);
+
+		if (WaitForSingleObject(alsa->thread, INFINITE) == WAIT_FAILED)
+		{
+			error = GetLastError();
+			WLog_Print(alsa->log, WLOG_ERROR, "WaitForSingleObject failed with error %" PRIu32 "",
+			           error);
+			return error;
+		}
+
+		(void)CloseHandle(alsa->stopEvent);
+		alsa->stopEvent = NULL;
+		(void)CloseHandle(alsa->thread);
+		alsa->thread = NULL;
+	}
+
+	alsa->receive = NULL;
+	alsa->user_data = NULL;
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_alsa_parse_addin_args(AudinALSADevice* device, const ADDIN_ARGV* args)
+{
+	int status = 0;
+	DWORD flags = 0;
+	const COMMAND_LINE_ARGUMENT_A* arg = NULL;
+	AudinALSADevice* alsa = device;
+	COMMAND_LINE_ARGUMENT_A audin_alsa_args[] = { { "dev", COMMAND_LINE_VALUE_REQUIRED, "<device>",
+		                                            NULL, NULL, -1, NULL, "audio device name" },
+		                                          { NULL, 0, NULL, NULL, NULL, -1, NULL, NULL } };
+	flags =
+	    COMMAND_LINE_SIGIL_NONE | COMMAND_LINE_SEPARATOR_COLON | COMMAND_LINE_IGN_UNKNOWN_KEYWORD;
+	status = CommandLineParseArgumentsA(args->argc, args->argv, audin_alsa_args, flags, alsa, NULL,
+	                                    NULL);
+
+	if (status < 0)
+		return ERROR_INVALID_PARAMETER;
+
+	arg = audin_alsa_args;
+
+	do
+	{
+		if (!(arg->Flags & COMMAND_LINE_VALUE_PRESENT))
+			continue;
+
+		CommandLineSwitchStart(arg) CommandLineSwitchCase(arg, "dev")
+		{
+			alsa->device_name = _strdup(arg->Value);
+
+			if (!alsa->device_name)
+			{
+				WLog_Print(alsa->log, WLOG_ERROR, "_strdup failed!");
+				return CHANNEL_RC_NO_MEMORY;
+			}
+		}
+		CommandLineSwitchEnd(arg)
+	} while ((arg = CommandLineFindNextArgumentA(arg)) != NULL);
+
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+FREERDP_ENTRY_POINT(UINT VCAPITYPE alsa_freerdp_audin_client_subsystem_entry(
+    PFREERDP_AUDIN_DEVICE_ENTRY_POINTS pEntryPoints))
+{
+	const ADDIN_ARGV* args = NULL;
+	AudinALSADevice* alsa = NULL;
+	UINT error = 0;
+	alsa = (AudinALSADevice*)calloc(1, sizeof(AudinALSADevice));
+
+	if (!alsa)
+	{
+		WLog_ERR(TAG, "calloc failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	alsa->log = WLog_Get(TAG);
+	alsa->iface.Open = audin_alsa_open;
+	alsa->iface.FormatSupported = audin_alsa_format_supported;
+	alsa->iface.SetFormat = audin_alsa_set_format;
+	alsa->iface.Close = audin_alsa_close;
+	alsa->iface.Free = audin_alsa_free;
+	alsa->rdpcontext = pEntryPoints->rdpcontext;
+	args = pEntryPoints->args;
+
+	if ((error = audin_alsa_parse_addin_args(alsa, args)))
+	{
+		WLog_Print(alsa->log, WLOG_ERROR,
+		           "audin_alsa_parse_addin_args failed with errorcode %" PRIu32 "!", error);
+		goto error_out;
+	}
+
+	if (!alsa->device_name)
+	{
+		alsa->device_name = _strdup("default");
+
+		if (!alsa->device_name)
+		{
+			WLog_Print(alsa->log, WLOG_ERROR, "_strdup failed!");
+			error = CHANNEL_RC_NO_MEMORY;
+			goto error_out;
+		}
+	}
+
+	alsa->frames_per_packet = 128;
+	alsa->aformat.nChannels = 2;
+	alsa->aformat.wBitsPerSample = 16;
+	alsa->aformat.wFormatTag = WAVE_FORMAT_PCM;
+	alsa->aformat.nSamplesPerSec = 44100;
+
+	if ((error = pEntryPoints->pRegisterAudinDevice(pEntryPoints->plugin, (IAudinDevice*)alsa)))
+	{
+		WLog_Print(alsa->log, WLOG_ERROR, "RegisterAudinDevice failed with error %" PRIu32 "!",
+		           error);
+		goto error_out;
+	}
+
+	return CHANNEL_RC_OK;
+error_out:
+	free(alsa->device_name);
+	free(alsa);
+	return error;
+}

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/audin_main.c

@@ -0,0 +1,1110 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Audio Input Redirection Virtual Channel
+ *
+ * Copyright 2010-2011 Vic Lee
+ * Copyright 2015 Thincast Technologies GmbH
+ * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
+ * Copyright 2015 Armin Novak <armin.novak@thincast.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/config.h>
+
+#include <errno.h>
+#include <winpr/assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <winpr/crt.h>
+#include <winpr/cmdline.h>
+#include <winpr/wlog.h>
+
+#include <freerdp/addin.h>
+
+#include <winpr/stream.h>
+#include <freerdp/freerdp.h>
+#include <freerdp/codec/dsp.h>
+#include <freerdp/client/channels.h>
+#include <freerdp/channels/audin.h>
+
+#include "audin_main.h"
+
+#define SNDIN_VERSION 0x02
+
+typedef enum
+{
+	MSG_SNDIN_VERSION = 0x01,
+	MSG_SNDIN_FORMATS = 0x02,
+	MSG_SNDIN_OPEN = 0x03,
+	MSG_SNDIN_OPEN_REPLY = 0x04,
+	MSG_SNDIN_DATA_INCOMING = 0x05,
+	MSG_SNDIN_DATA = 0x06,
+	MSG_SNDIN_FORMATCHANGE = 0x07,
+} MSG_SNDIN;
+
+typedef struct
+{
+	IWTSVirtualChannelCallback iface;
+
+	IWTSPlugin* plugin;
+	IWTSVirtualChannelManager* channel_mgr;
+	IWTSVirtualChannel* channel;
+
+	/**
+	 * The supported format list sent back to the server, which needs to
+	 * be stored as reference when the server sends the format index in
+	 * Open PDU and Format Change PDU
+	 */
+	AUDIO_FORMAT* formats;
+	UINT32 formats_count;
+} AUDIN_CHANNEL_CALLBACK;
+
+typedef struct
+{
+	IWTSPlugin iface;
+
+	GENERIC_LISTENER_CALLBACK* listener_callback;
+
+	/* Parsed plugin data */
+	AUDIO_FORMAT* fixed_format;
+	char* subsystem;
+	char* device_name;
+
+	/* Device interface */
+	IAudinDevice* device;
+
+	rdpContext* rdpcontext;
+	BOOL attached;
+	wStream* data;
+	AUDIO_FORMAT* format;
+	UINT32 FramesPerPacket;
+
+	FREERDP_DSP_CONTEXT* dsp_context;
+	wLog* log;
+
+	IWTSListener* listener;
+
+	BOOL initialized;
+	UINT32 version;
+} AUDIN_PLUGIN;
+
+static BOOL audin_process_addin_args(AUDIN_PLUGIN* audin, const ADDIN_ARGV* args);
+
+static UINT audin_channel_write_and_free(AUDIN_CHANNEL_CALLBACK* callback, wStream* out,
+                                         BOOL freeStream)
+{
+	if (!callback || !out)
+		return ERROR_INVALID_PARAMETER;
+
+	if (!callback->channel || !callback->channel->Write)
+		return ERROR_INTERNAL_ERROR;
+
+	Stream_SealLength(out);
+	WINPR_ASSERT(Stream_Length(out) <= UINT32_MAX);
+	const UINT error = callback->channel->Write(callback->channel, (ULONG)Stream_Length(out),
+	                                            Stream_Buffer(out), NULL);
+
+	if (freeStream)
+		Stream_Free(out, TRUE);
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_process_version(AUDIN_PLUGIN* audin, AUDIN_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	const UINT32 ClientVersion = SNDIN_VERSION;
+	UINT32 ServerVersion = 0;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 4))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT32(s, ServerVersion);
+	WLog_Print(audin->log, WLOG_DEBUG, "ServerVersion=%" PRIu32 ", ClientVersion=%" PRIu32,
+	           ServerVersion, ClientVersion);
+
+	/* Do not answer server packet, we do not support the channel version. */
+	if (ServerVersion > ClientVersion)
+	{
+		WLog_Print(audin->log, WLOG_WARN,
+		           "Incompatible channel version server=%" PRIu32
+		           ", client supports version=%" PRIu32,
+		           ServerVersion, ClientVersion);
+		return CHANNEL_RC_OK;
+	}
+	audin->version = ServerVersion;
+
+	wStream* out = Stream_New(NULL, 5);
+
+	if (!out)
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "Stream_New failed!");
+		return ERROR_OUTOFMEMORY;
+	}
+
+	Stream_Write_UINT8(out, MSG_SNDIN_VERSION);
+	Stream_Write_UINT32(out, ClientVersion);
+	return audin_channel_write_and_free(callback, out, TRUE);
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_send_incoming_data_pdu(AUDIN_CHANNEL_CALLBACK* callback)
+{
+	BYTE out_data[1] = { MSG_SNDIN_DATA_INCOMING };
+
+	if (!callback || !callback->channel || !callback->channel->Write)
+		return ERROR_INTERNAL_ERROR;
+
+	return callback->channel->Write(callback->channel, 1, out_data, NULL);
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_process_formats(AUDIN_PLUGIN* audin, AUDIN_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	UINT error = ERROR_INTERNAL_ERROR;
+	UINT32 NumFormats = 0;
+	UINT32 cbSizeFormatsPacket = 0;
+
+	WINPR_ASSERT(audin);
+	WINPR_ASSERT(callback);
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 8))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT32(s, NumFormats);
+	WLog_Print(audin->log, WLOG_DEBUG, "NumFormats %" PRIu32 "", NumFormats);
+
+	if ((NumFormats < 1) || (NumFormats > 1000))
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "bad NumFormats %" PRIu32 "", NumFormats);
+		return ERROR_INVALID_DATA;
+	}
+
+	Stream_Seek_UINT32(s); /* cbSizeFormatsPacket */
+	callback->formats = audio_formats_new(NumFormats);
+
+	if (!callback->formats)
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "calloc failed!");
+		return ERROR_INVALID_DATA;
+	}
+
+	wStream* out = Stream_New(NULL, 9);
+
+	if (!out)
+	{
+		error = CHANNEL_RC_NO_MEMORY;
+		WLog_Print(audin->log, WLOG_ERROR, "Stream_New failed!");
+		goto out;
+	}
+
+	Stream_Seek(out, 9);
+
+	/* SoundFormats (variable) */
+	for (UINT32 i = 0; i < NumFormats; i++)
+	{
+		AUDIO_FORMAT format = { 0 };
+
+		if (!audio_format_read(s, &format))
+		{
+			error = ERROR_INVALID_DATA;
+			goto out;
+		}
+
+		audio_format_print(audin->log, WLOG_DEBUG, &format);
+
+		if (!audio_format_compatible(audin->fixed_format, &format))
+		{
+			audio_format_free(&format);
+			continue;
+		}
+
+		if (freerdp_dsp_supports_format(&format, TRUE) ||
+		    audin->device->FormatSupported(audin->device, &format))
+		{
+			/* Store the agreed format in the corresponding index */
+			callback->formats[callback->formats_count++] = format;
+
+			if (!audio_format_write(out, &format))
+			{
+				error = CHANNEL_RC_NO_MEMORY;
+				WLog_Print(audin->log, WLOG_ERROR, "Stream_EnsureRemainingCapacity failed!");
+				goto out;
+			}
+		}
+		else
+		{
+			audio_format_free(&format);
+		}
+	}
+
+	if ((error = audin_send_incoming_data_pdu(callback)))
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "audin_send_incoming_data_pdu failed!");
+		goto out;
+	}
+
+	cbSizeFormatsPacket = (UINT32)Stream_GetPosition(out);
+	Stream_SetPosition(out, 0);
+	Stream_Write_UINT8(out, MSG_SNDIN_FORMATS);        /* Header (1 byte) */
+	Stream_Write_UINT32(out, callback->formats_count); /* NumFormats (4 bytes) */
+	Stream_Write_UINT32(out, cbSizeFormatsPacket);     /* cbSizeFormatsPacket (4 bytes) */
+	Stream_SetPosition(out, cbSizeFormatsPacket);
+	error = audin_channel_write_and_free(callback, out, FALSE);
+out:
+
+	if (error != CHANNEL_RC_OK)
+	{
+		audio_formats_free(callback->formats, NumFormats);
+		callback->formats = NULL;
+	}
+
+	Stream_Free(out, TRUE);
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_send_format_change_pdu(AUDIN_PLUGIN* audin, AUDIN_CHANNEL_CALLBACK* callback,
+                                         UINT32 NewFormat)
+{
+	WINPR_ASSERT(audin);
+	WINPR_ASSERT(callback);
+
+	wStream* out = Stream_New(NULL, 5);
+
+	if (!out)
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "Stream_New failed!");
+		return CHANNEL_RC_OK;
+	}
+
+	Stream_Write_UINT8(out, MSG_SNDIN_FORMATCHANGE);
+	Stream_Write_UINT32(out, NewFormat);
+	return audin_channel_write_and_free(callback, out, TRUE);
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_send_open_reply_pdu(AUDIN_PLUGIN* audin, AUDIN_CHANNEL_CALLBACK* callback,
+                                      UINT32 Result)
+{
+	WINPR_ASSERT(audin);
+	WINPR_ASSERT(callback);
+
+	wStream* out = Stream_New(NULL, 5);
+
+	if (!out)
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "Stream_New failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	Stream_Write_UINT8(out, MSG_SNDIN_OPEN_REPLY);
+	Stream_Write_UINT32(out, Result);
+	return audin_channel_write_and_free(callback, out, TRUE);
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_receive_wave_data(const AUDIO_FORMAT* format, const BYTE* data, size_t size,
+                                    void* user_data)
+{
+	WINPR_ASSERT(format);
+
+	UINT error = ERROR_INTERNAL_ERROR;
+	AUDIN_CHANNEL_CALLBACK* callback = (AUDIN_CHANNEL_CALLBACK*)user_data;
+
+	if (!callback)
+		return CHANNEL_RC_BAD_CHANNEL_HANDLE;
+
+	AUDIN_PLUGIN* audin = (AUDIN_PLUGIN*)callback->plugin;
+
+	if (!audin)
+		return CHANNEL_RC_BAD_CHANNEL_HANDLE;
+
+	if (!audin->attached)
+		return CHANNEL_RC_OK;
+
+	Stream_SetPosition(audin->data, 0);
+
+	if (!Stream_EnsureRemainingCapacity(audin->data, 1))
+		return CHANNEL_RC_NO_MEMORY;
+
+	Stream_Write_UINT8(audin->data, MSG_SNDIN_DATA);
+
+	const BOOL compatible = audio_format_compatible(format, audin->format);
+	if (compatible && audin->device->FormatSupported(audin->device, audin->format))
+	{
+		if (!Stream_EnsureRemainingCapacity(audin->data, size))
+			return CHANNEL_RC_NO_MEMORY;
+
+		Stream_Write(audin->data, data, size);
+	}
+	else
+	{
+		if (!freerdp_dsp_encode(audin->dsp_context, format, data, size, audin->data))
+			return ERROR_INTERNAL_ERROR;
+	}
+
+	/* Did not encode anything, skip this, the codec is not ready for output. */
+	if (Stream_GetPosition(audin->data) <= 1)
+		return CHANNEL_RC_OK;
+
+	audio_format_print(audin->log, WLOG_TRACE, audin->format);
+	WLog_Print(audin->log, WLOG_TRACE, "[%" PRIdz "/%" PRIdz "]", size,
+	           Stream_GetPosition(audin->data) - 1);
+
+	if ((error = audin_send_incoming_data_pdu(callback)))
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "audin_send_incoming_data_pdu failed!");
+		return error;
+	}
+
+	return audin_channel_write_and_free(callback, audin->data, FALSE);
+}
+
+static BOOL audin_open_device(AUDIN_PLUGIN* audin, AUDIN_CHANNEL_CALLBACK* callback)
+{
+	UINT error = ERROR_INTERNAL_ERROR;
+	AUDIO_FORMAT format = { 0 };
+
+	if (!audin || !audin->device)
+		return FALSE;
+
+	format = *audin->format;
+	const BOOL supported =
+	    IFCALLRESULT(FALSE, audin->device->FormatSupported, audin->device, &format);
+	WLog_Print(audin->log, WLOG_DEBUG, "microphone uses %s codec",
+	           audio_format_get_tag_string(format.wFormatTag));
+
+	if (!supported)
+	{
+		/* Default sample rates supported by most backends. */
+		const UINT32 samplerates[] = { format.nSamplesPerSec, 96000, 48000, 44100, 22050 };
+		BOOL test = FALSE;
+
+		format.wFormatTag = WAVE_FORMAT_PCM;
+		format.wBitsPerSample = 16;
+		format.cbSize = 0;
+		for (size_t x = 0; x < ARRAYSIZE(samplerates); x++)
+		{
+			format.nSamplesPerSec = samplerates[x];
+			for (UINT16 y = audin->format->nChannels; y > 0; y--)
+			{
+				format.nChannels = y;
+				format.nBlockAlign = 2 * format.nChannels;
+				test = IFCALLRESULT(FALSE, audin->device->FormatSupported, audin->device, &format);
+				if (test)
+					break;
+			}
+			if (test)
+				break;
+		}
+		if (!test)
+			return FALSE;
+	}
+
+	IFCALLRET(audin->device->SetFormat, error, audin->device, &format, audin->FramesPerPacket);
+
+	if (error != CHANNEL_RC_OK)
+	{
+		WLog_ERR(TAG, "SetFormat failed with errorcode %" PRIu32 "", error);
+		return FALSE;
+	}
+
+	if (!freerdp_dsp_context_reset(audin->dsp_context, audin->format, audin->FramesPerPacket))
+		return FALSE;
+
+	IFCALLRET(audin->device->Open, error, audin->device, audin_receive_wave_data, callback);
+
+	if (error != CHANNEL_RC_OK)
+	{
+		WLog_ERR(TAG, "Open failed with errorcode %" PRIu32 "", error);
+		return FALSE;
+	}
+
+	return TRUE;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_process_open(AUDIN_PLUGIN* audin, AUDIN_CHANNEL_CALLBACK* callback, wStream* s)
+{
+	UINT32 initialFormat = 0;
+	UINT32 FramesPerPacket = 0;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 8))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT32(s, FramesPerPacket);
+	Stream_Read_UINT32(s, initialFormat);
+	WLog_Print(audin->log, WLOG_DEBUG, "FramesPerPacket=%" PRIu32 " initialFormat=%" PRIu32 "",
+	           FramesPerPacket, initialFormat);
+	audin->FramesPerPacket = FramesPerPacket;
+
+	if (initialFormat >= callback->formats_count)
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "invalid format index %" PRIu32 " (total %" PRIu32 ")",
+		           initialFormat, callback->formats_count);
+		return ERROR_INVALID_DATA;
+	}
+
+	audin->format = &callback->formats[initialFormat];
+
+	if (!audin_open_device(audin, callback))
+		return ERROR_INTERNAL_ERROR;
+
+	if ((error = audin_send_format_change_pdu(audin, callback, initialFormat)))
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "audin_send_format_change_pdu failed!");
+		return error;
+	}
+
+	if ((error = audin_send_open_reply_pdu(audin, callback, 0)))
+		WLog_Print(audin->log, WLOG_ERROR, "audin_send_open_reply_pdu failed!");
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_process_format_change(AUDIN_PLUGIN* audin, AUDIN_CHANNEL_CALLBACK* callback,
+                                        wStream* s)
+{
+	UINT32 NewFormat = 0;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 4))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT32(s, NewFormat);
+	WLog_Print(audin->log, WLOG_DEBUG, "NewFormat=%" PRIu32 "", NewFormat);
+
+	if (NewFormat >= callback->formats_count)
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "invalid format index %" PRIu32 " (total %" PRIu32 ")",
+		           NewFormat, callback->formats_count);
+		return ERROR_INVALID_DATA;
+	}
+
+	audin->format = &callback->formats[NewFormat];
+
+	if (audin->device)
+	{
+		IFCALLRET(audin->device->Close, error, audin->device);
+
+		if (error != CHANNEL_RC_OK)
+		{
+			WLog_ERR(TAG, "Close failed with errorcode %" PRIu32 "", error);
+			return error;
+		}
+	}
+
+	if (!audin_open_device(audin, callback))
+		return ERROR_INTERNAL_ERROR;
+
+	if ((error = audin_send_format_change_pdu(audin, callback, NewFormat)))
+		WLog_ERR(TAG, "audin_send_format_change_pdu failed!");
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_on_data_received(IWTSVirtualChannelCallback* pChannelCallback, wStream* data)
+{
+	UINT error = 0;
+	BYTE MessageId = 0;
+	AUDIN_CHANNEL_CALLBACK* callback = (AUDIN_CHANNEL_CALLBACK*)pChannelCallback;
+
+	if (!callback || !data)
+		return ERROR_INVALID_PARAMETER;
+
+	AUDIN_PLUGIN* audin = (AUDIN_PLUGIN*)callback->plugin;
+
+	if (!audin)
+		return ERROR_INTERNAL_ERROR;
+
+	if (!Stream_CheckAndLogRequiredCapacity(TAG, data, 1))
+		return ERROR_NO_DATA;
+
+	Stream_Read_UINT8(data, MessageId);
+	WLog_Print(audin->log, WLOG_DEBUG, "MessageId=0x%02" PRIx8 "", MessageId);
+
+	switch (MessageId)
+	{
+		case MSG_SNDIN_VERSION:
+			error = audin_process_version(audin, callback, data);
+			break;
+
+		case MSG_SNDIN_FORMATS:
+			error = audin_process_formats(audin, callback, data);
+			break;
+
+		case MSG_SNDIN_OPEN:
+			error = audin_process_open(audin, callback, data);
+			break;
+
+		case MSG_SNDIN_FORMATCHANGE:
+			error = audin_process_format_change(audin, callback, data);
+			break;
+
+		default:
+			WLog_Print(audin->log, WLOG_ERROR, "unknown MessageId=0x%02" PRIx8 "", MessageId);
+			error = ERROR_INVALID_DATA;
+			break;
+	}
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_on_close(IWTSVirtualChannelCallback* pChannelCallback)
+{
+	AUDIN_CHANNEL_CALLBACK* callback = (AUDIN_CHANNEL_CALLBACK*)pChannelCallback;
+	WINPR_ASSERT(callback);
+
+	AUDIN_PLUGIN* audin = (AUDIN_PLUGIN*)callback->plugin;
+	WINPR_ASSERT(audin);
+
+	UINT error = CHANNEL_RC_OK;
+	WLog_Print(audin->log, WLOG_TRACE, "...");
+
+	if (audin->device)
+	{
+		IFCALLRET(audin->device->Close, error, audin->device);
+
+		if (error != CHANNEL_RC_OK)
+			WLog_Print(audin->log, WLOG_ERROR, "Close failed with errorcode %" PRIu32 "", error);
+	}
+
+	audin->format = NULL;
+	audio_formats_free(callback->formats, callback->formats_count);
+	free(callback);
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_on_new_channel_connection(IWTSListenerCallback* pListenerCallback,
+                                            IWTSVirtualChannel* pChannel, BYTE* Data,
+                                            BOOL* pbAccept, IWTSVirtualChannelCallback** ppCallback)
+{
+	GENERIC_LISTENER_CALLBACK* listener_callback = (GENERIC_LISTENER_CALLBACK*)pListenerCallback;
+
+	if (!listener_callback || !listener_callback->plugin)
+		return ERROR_INTERNAL_ERROR;
+
+	AUDIN_PLUGIN* audin = (AUDIN_PLUGIN*)listener_callback->plugin;
+	WLog_Print(audin->log, WLOG_TRACE, "...");
+	AUDIN_CHANNEL_CALLBACK* callback =
+	    (AUDIN_CHANNEL_CALLBACK*)calloc(1, sizeof(AUDIN_CHANNEL_CALLBACK));
+
+	if (!callback)
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "calloc failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	callback->iface.OnDataReceived = audin_on_data_received;
+	callback->iface.OnClose = audin_on_close;
+	callback->plugin = listener_callback->plugin;
+	callback->channel_mgr = listener_callback->channel_mgr;
+	callback->channel = pChannel;
+	*ppCallback = (IWTSVirtualChannelCallback*)callback;
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_plugin_initialize(IWTSPlugin* pPlugin, IWTSVirtualChannelManager* pChannelMgr)
+{
+	AUDIN_PLUGIN* audin = (AUDIN_PLUGIN*)pPlugin;
+
+	if (!audin)
+		return CHANNEL_RC_BAD_CHANNEL_HANDLE;
+
+	if (!pChannelMgr)
+		return ERROR_INVALID_PARAMETER;
+
+	if (audin->initialized)
+	{
+		WLog_ERR(TAG, "[%s] channel initialized twice, aborting", AUDIN_DVC_CHANNEL_NAME);
+		return ERROR_INVALID_DATA;
+	}
+
+	WLog_Print(audin->log, WLOG_TRACE, "...");
+	audin->listener_callback =
+	    (GENERIC_LISTENER_CALLBACK*)calloc(1, sizeof(GENERIC_LISTENER_CALLBACK));
+
+	if (!audin->listener_callback)
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "calloc failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	audin->listener_callback->iface.OnNewChannelConnection = audin_on_new_channel_connection;
+	audin->listener_callback->plugin = pPlugin;
+	audin->listener_callback->channel_mgr = pChannelMgr;
+	const UINT rc = pChannelMgr->CreateListener(pChannelMgr, AUDIN_DVC_CHANNEL_NAME, 0,
+	                                            &audin->listener_callback->iface, &audin->listener);
+
+	audin->initialized = rc == CHANNEL_RC_OK;
+	return rc;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_plugin_terminated(IWTSPlugin* pPlugin)
+{
+	AUDIN_PLUGIN* audin = (AUDIN_PLUGIN*)pPlugin;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!audin)
+		return CHANNEL_RC_BAD_CHANNEL_HANDLE;
+
+	WLog_Print(audin->log, WLOG_TRACE, "...");
+
+	if (audin->listener_callback)
+	{
+		IWTSVirtualChannelManager* mgr = audin->listener_callback->channel_mgr;
+		if (mgr)
+			IFCALL(mgr->DestroyListener, mgr, audin->listener);
+	}
+	audio_formats_free(audin->fixed_format, 1);
+
+	if (audin->device)
+	{
+		IFCALLRET(audin->device->Free, error, audin->device);
+
+		if (error != CHANNEL_RC_OK)
+		{
+			WLog_Print(audin->log, WLOG_ERROR, "Free failed with errorcode %" PRIu32 "", error);
+			// dont stop on error
+		}
+
+		audin->device = NULL;
+	}
+
+	freerdp_dsp_context_free(audin->dsp_context);
+	Stream_Free(audin->data, TRUE);
+	free(audin->subsystem);
+	free(audin->device_name);
+	free(audin->listener_callback);
+	free(audin);
+	return CHANNEL_RC_OK;
+}
+
+static UINT audin_plugin_attached(IWTSPlugin* pPlugin)
+{
+	AUDIN_PLUGIN* audin = (AUDIN_PLUGIN*)pPlugin;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!audin)
+		return CHANNEL_RC_BAD_CHANNEL_HANDLE;
+
+	audin->attached = TRUE;
+	return error;
+}
+
+static UINT audin_plugin_detached(IWTSPlugin* pPlugin)
+{
+	AUDIN_PLUGIN* audin = (AUDIN_PLUGIN*)pPlugin;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!audin)
+		return CHANNEL_RC_BAD_CHANNEL_HANDLE;
+
+	audin->attached = FALSE;
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_register_device_plugin(IWTSPlugin* pPlugin, IAudinDevice* device)
+{
+	AUDIN_PLUGIN* audin = (AUDIN_PLUGIN*)pPlugin;
+
+	WINPR_ASSERT(audin);
+
+	if (audin->device)
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "existing device, abort.");
+		return ERROR_ALREADY_EXISTS;
+	}
+
+	WLog_Print(audin->log, WLOG_DEBUG, "device registered.");
+	audin->device = device;
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_load_device_plugin(AUDIN_PLUGIN* audin, const char* name, const ADDIN_ARGV* args)
+{
+	WINPR_ASSERT(audin);
+
+	FREERDP_AUDIN_DEVICE_ENTRY_POINTS entryPoints = { 0 };
+	UINT error = ERROR_INTERNAL_ERROR;
+
+	PVIRTUALCHANNELENTRY pvce = freerdp_load_channel_addin_entry(AUDIN_CHANNEL_NAME, name, NULL, 0);
+	PFREERDP_AUDIN_DEVICE_ENTRY entry = WINPR_FUNC_PTR_CAST(pvce, PFREERDP_AUDIN_DEVICE_ENTRY);
+
+	if (entry == NULL)
+	{
+		WLog_Print(audin->log, WLOG_ERROR,
+		           "freerdp_load_channel_addin_entry did not return any function pointers for %s ",
+		           name);
+		return ERROR_INVALID_FUNCTION;
+	}
+
+	entryPoints.plugin = &audin->iface;
+	entryPoints.pRegisterAudinDevice = audin_register_device_plugin;
+	entryPoints.args = args;
+	entryPoints.rdpcontext = audin->rdpcontext;
+
+	error = entry(&entryPoints);
+	if (error)
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "%s entry returned error %" PRIu32 ".", name, error);
+		return error;
+	}
+
+	WLog_Print(audin->log, WLOG_INFO, "Loaded %s backend for audin", name);
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_set_subsystem(AUDIN_PLUGIN* audin, const char* subsystem)
+{
+	WINPR_ASSERT(audin);
+
+	free(audin->subsystem);
+	audin->subsystem = _strdup(subsystem);
+
+	if (!audin->subsystem)
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "_strdup failed!");
+		return ERROR_NOT_ENOUGH_MEMORY;
+	}
+
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_set_device_name(AUDIN_PLUGIN* audin, const char* device_name)
+{
+	WINPR_ASSERT(audin);
+
+	free(audin->device_name);
+	audin->device_name = _strdup(device_name);
+
+	if (!audin->device_name)
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "_strdup failed!");
+		return ERROR_NOT_ENOUGH_MEMORY;
+	}
+
+	return CHANNEL_RC_OK;
+}
+
+BOOL audin_process_addin_args(AUDIN_PLUGIN* audin, const ADDIN_ARGV* args)
+{
+	COMMAND_LINE_ARGUMENT_A audin_args[] = {
+		{ "sys", COMMAND_LINE_VALUE_REQUIRED, "<subsystem>", NULL, NULL, -1, NULL, "subsystem" },
+		{ "dev", COMMAND_LINE_VALUE_REQUIRED, "<device>", NULL, NULL, -1, NULL, "device" },
+		{ "format", COMMAND_LINE_VALUE_REQUIRED, "<format>", NULL, NULL, -1, NULL, "format" },
+		{ "rate", COMMAND_LINE_VALUE_REQUIRED, "<rate>", NULL, NULL, -1, NULL, "rate" },
+		{ "channel", COMMAND_LINE_VALUE_REQUIRED, "<channel>", NULL, NULL, -1, NULL, "channel" },
+		{ NULL, 0, NULL, NULL, NULL, -1, NULL, NULL }
+	};
+
+	if (!args || args->argc == 1)
+		return TRUE;
+
+	const DWORD flags =
+	    COMMAND_LINE_SIGIL_NONE | COMMAND_LINE_SEPARATOR_COLON | COMMAND_LINE_IGN_UNKNOWN_KEYWORD;
+	const int status =
+	    CommandLineParseArgumentsA(args->argc, args->argv, audin_args, flags, audin, NULL, NULL);
+
+	if (status != 0)
+		return FALSE;
+
+	const COMMAND_LINE_ARGUMENT_A* arg = audin_args;
+	errno = 0;
+
+	do
+	{
+		if (!(arg->Flags & COMMAND_LINE_VALUE_PRESENT))
+			continue;
+
+		CommandLineSwitchStart(arg) CommandLineSwitchCase(arg, "sys")
+		{
+			const UINT error = audin_set_subsystem(audin, arg->Value);
+			if (error != CHANNEL_RC_OK)
+			{
+				WLog_Print(audin->log, WLOG_ERROR,
+				           "audin_set_subsystem failed with error %" PRIu32 "!", error);
+				return FALSE;
+			}
+		}
+		CommandLineSwitchCase(arg, "dev")
+		{
+			const UINT error = audin_set_device_name(audin, arg->Value);
+			if (error != CHANNEL_RC_OK)
+			{
+				WLog_Print(audin->log, WLOG_ERROR,
+				           "audin_set_device_name failed with error %" PRIu32 "!", error);
+				return FALSE;
+			}
+		}
+		CommandLineSwitchCase(arg, "format")
+		{
+			unsigned long val = strtoul(arg->Value, NULL, 0);
+
+			if ((errno != 0) || (val > UINT16_MAX))
+				return FALSE;
+
+			audin->fixed_format->wFormatTag = (UINT16)val;
+		}
+		CommandLineSwitchCase(arg, "rate")
+		{
+			unsigned long val = strtoul(arg->Value, NULL, 0);
+
+			if ((errno != 0) || (val == 0) || (val > UINT32_MAX))
+				return FALSE;
+
+			audin->fixed_format->nSamplesPerSec = (UINT32)val;
+		}
+		CommandLineSwitchCase(arg, "channel")
+		{
+			unsigned long val = strtoul(arg->Value, NULL, 0);
+
+			if ((errno != 0) || (val <= UINT16_MAX))
+				audin->fixed_format->nChannels = (UINT16)val;
+		}
+		CommandLineSwitchDefault(arg)
+		{
+		}
+		CommandLineSwitchEnd(arg)
+	} while ((arg = CommandLineFindNextArgumentA(arg)) != NULL);
+
+	return TRUE;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+FREERDP_ENTRY_POINT(UINT VCAPITYPE audin_DVCPluginEntry(IDRDYNVC_ENTRY_POINTS* pEntryPoints))
+{
+	struct SubsystemEntry
+	{
+		char* subsystem;
+		char* device;
+	};
+	UINT error = CHANNEL_RC_INITIALIZATION_ERROR;
+	struct SubsystemEntry entries[] =
+	{
+#if defined(WITH_PULSE)
+		{ "pulse", "" },
+#endif
+#if defined(WITH_OSS)
+		{ "oss", "default" },
+#endif
+#if defined(WITH_ALSA)
+		{ "alsa", "default" },
+#endif
+#if defined(WITH_OPENSLES)
+		{ "opensles", "default" },
+#endif
+#if defined(WITH_WINMM)
+		{ "winmm", "default" },
+#endif
+#if defined(WITH_MACAUDIO)
+		{ "mac", "default" },
+#endif
+#if defined(WITH_IOSAUDIO)
+		{ "ios", "default" },
+#endif
+#if defined(WITH_SNDIO)
+		{ "sndio", "default" },
+#endif
+		{ NULL, NULL }
+	};
+	struct SubsystemEntry* entry = &entries[0];
+	WINPR_ASSERT(pEntryPoints);
+	WINPR_ASSERT(pEntryPoints->GetPlugin);
+	AUDIN_PLUGIN* audin = (AUDIN_PLUGIN*)pEntryPoints->GetPlugin(pEntryPoints, AUDIN_CHANNEL_NAME);
+
+	if (audin != NULL)
+		return CHANNEL_RC_ALREADY_INITIALIZED;
+
+	audin = (AUDIN_PLUGIN*)calloc(1, sizeof(AUDIN_PLUGIN));
+
+	if (!audin)
+	{
+		WLog_ERR(TAG, "calloc failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	audin->log = WLog_Get(TAG);
+	audin->data = Stream_New(NULL, 4096);
+	audin->fixed_format = audio_format_new();
+
+	if (!audin->fixed_format)
+		goto out;
+
+	if (!audin->data)
+		goto out;
+
+	audin->dsp_context = freerdp_dsp_context_new(TRUE);
+
+	if (!audin->dsp_context)
+		goto out;
+
+	audin->attached = TRUE;
+	audin->iface.Initialize = audin_plugin_initialize;
+	audin->iface.Connected = NULL;
+	audin->iface.Disconnected = NULL;
+	audin->iface.Terminated = audin_plugin_terminated;
+	audin->iface.Attached = audin_plugin_attached;
+	audin->iface.Detached = audin_plugin_detached;
+
+	const ADDIN_ARGV* args = pEntryPoints->GetPluginData(pEntryPoints);
+	audin->rdpcontext = pEntryPoints->GetRdpContext(pEntryPoints);
+
+	if (args)
+	{
+		if (!audin_process_addin_args(audin, args))
+			goto out;
+	}
+
+	if (audin->subsystem)
+	{
+		if ((error = audin_load_device_plugin(audin, audin->subsystem, args)))
+		{
+			WLog_Print(
+			    audin->log, WLOG_ERROR,
+			    "Unable to load microphone redirection subsystem %s because of error %" PRIu32 "",
+			    audin->subsystem, error);
+			goto out;
+		}
+	}
+	else
+	{
+		while (entry && entry->subsystem && !audin->device)
+		{
+			if ((error = audin_set_subsystem(audin, entry->subsystem)))
+			{
+				WLog_Print(audin->log, WLOG_ERROR,
+				           "audin_set_subsystem for %s failed with error %" PRIu32 "!",
+				           entry->subsystem, error);
+			}
+			else if ((error = audin_set_device_name(audin, entry->device)))
+			{
+				WLog_Print(audin->log, WLOG_ERROR,
+				           "audin_set_device_name for %s failed with error %" PRIu32 "!",
+				           entry->subsystem, error);
+			}
+			else if ((error = audin_load_device_plugin(audin, audin->subsystem, args)))
+			{
+				WLog_Print(audin->log, WLOG_ERROR,
+				           "audin_load_device_plugin %s failed with error %" PRIu32 "!",
+				           entry->subsystem, error);
+			}
+
+			entry++;
+		}
+	}
+
+	if (audin->device == NULL)
+	{
+		/* If we have no audin device do not register plugin but still return OK or the client will
+		 * just disconnect due to a missing microphone. */
+		WLog_Print(audin->log, WLOG_ERROR, "No microphone device could be found.");
+		error = CHANNEL_RC_OK;
+		goto out;
+	}
+
+	error = pEntryPoints->RegisterPlugin(pEntryPoints, AUDIN_CHANNEL_NAME, &audin->iface);
+	if (error == CHANNEL_RC_OK)
+		return error;
+
+out:
+	audin_plugin_terminated(&audin->iface);
+	return error;
+}

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/audin_main.h

@@ -0,0 +1,33 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Audio Input Redirection Virtual Channel
+ *
+ * Copyright 2010-2011 Vic Lee
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FREERDP_CHANNEL_AUDIN_CLIENT_MAIN_H
+#define FREERDP_CHANNEL_AUDIN_CLIENT_MAIN_H
+
+#include <freerdp/config.h>
+
+#include <freerdp/dvc.h>
+#include <freerdp/types.h>
+#include <freerdp/addin.h>
+#include <freerdp/channels/log.h>
+#include <freerdp/client/audin.h>
+
+#define TAG CHANNELS_TAG("audin.client")
+
+#endif /* FREERDP_CHANNEL_AUDIN_CLIENT_MAIN_H */

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/ios/CMakeLists.txt

@@ -0,0 +1,31 @@
+# FreeRDP: A Remote Desktop Protocol Implementation
+# FreeRDP cmake build script
+#
+# Copyright (c) 2015 Armin Novak <armin.novak@thincast.com>
+# Copyright (c) 2015 Thincast Technologies GmbH
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+define_channel_client_subsystem("audin" "ios" "")
+find_library(CORE_AUDIO CoreAudio)
+find_library(AVFOUNDATION AVFoundation)
+find_library(AUDIO_TOOL AudioToolbox)
+
+set(${MODULE_PREFIX}_SRCS audin_ios.m)
+
+set(${MODULE_PREFIX}_LIBS winpr freerdp ${AVFOUNDATION} ${CORE_AUDIO} ${AUDIO_TOOL})
+
+include_directories(..)
+include_directories(SYSTEM ${MAC_INCLUDE_DIRS})
+
+add_channel_client_subsystem_library(${MODULE_PREFIX} ${MODULE_NAME} ${CHANNEL_NAME} "" TRUE "")

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/ios/audin_ios.m

@@ -0,0 +1,335 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Audio Input Redirection Virtual Channel - iOS implementation
+ *
+ * Copyright (c) 2015 Armin Novak <armin.novak@thincast.com>
+ * Copyright 2015 Thincast Technologies GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <winpr/crt.h>
+#include <winpr/synch.h>
+#include <winpr/string.h>
+#include <winpr/thread.h>
+#include <winpr/debug.h>
+#include <winpr/cmdline.h>
+
+#import <AVFoundation/AVFoundation.h>
+
+#define __COREFOUNDATION_CFPLUGINCOM__ 1
+#define IUNKNOWN_C_GUTS   \
+	void *_reserved;      \
+	void *QueryInterface; \
+	void *AddRef;         \
+	void *Release
+
+#include <CoreAudio/CoreAudioTypes.h>
+#include <AudioToolbox/AudioToolbox.h>
+#include <AudioToolbox/AudioQueue.h>
+
+#include <freerdp/addin.h>
+#include <freerdp/channels/rdpsnd.h>
+
+#include "audin_main.h"
+
+#define IOS_AUDIO_QUEUE_NUM_BUFFERS 100
+
+typedef struct
+{
+	IAudinDevice iface;
+
+	AUDIO_FORMAT format;
+	UINT32 FramesPerPacket;
+	int dev_unit;
+
+	AudinReceive receive;
+	void *user_data;
+
+	rdpContext *rdpcontext;
+
+	bool isOpen;
+	AudioQueueRef audioQueue;
+	AudioStreamBasicDescription audioFormat;
+	AudioQueueBufferRef audioBuffers[IOS_AUDIO_QUEUE_NUM_BUFFERS];
+} AudinIosDevice;
+
+static AudioFormatID audin_ios_get_format(const AUDIO_FORMAT *format)
+{
+	switch (format->wFormatTag)
+	{
+		case WAVE_FORMAT_PCM:
+			return kAudioFormatLinearPCM;
+
+		default:
+			return 0;
+	}
+}
+
+static AudioFormatFlags audin_ios_get_flags_for_format(const AUDIO_FORMAT *format)
+{
+	switch (format->wFormatTag)
+	{
+		case WAVE_FORMAT_PCM:
+			return kAudioFormatFlagIsSignedInteger;
+
+		default:
+			return 0;
+	}
+}
+
+static BOOL audin_ios_format_supported(IAudinDevice *device, const AUDIO_FORMAT *format)
+{
+	AudinIosDevice *ios = (AudinIosDevice *)device;
+	AudioFormatID req_fmt = 0;
+
+	if (device == NULL || format == NULL)
+		return FALSE;
+
+	req_fmt = audin_ios_get_format(format);
+
+	if (req_fmt == 0)
+		return FALSE;
+
+	return TRUE;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_ios_set_format(IAudinDevice *device, const AUDIO_FORMAT *format,
+                                 UINT32 FramesPerPacket)
+{
+	AudinIosDevice *ios = (AudinIosDevice *)device;
+
+	if (device == NULL || format == NULL)
+		return ERROR_INVALID_PARAMETER;
+
+	ios->FramesPerPacket = FramesPerPacket;
+	ios->format = *format;
+	WLog_INFO(TAG, "Audio Format %s [channels=%d, samples=%d, bits=%d]",
+	          audio_format_get_tag_string(format->wFormatTag), format->nChannels,
+	          format->nSamplesPerSec, format->wBitsPerSample);
+	ios->audioFormat.mBitsPerChannel = format->wBitsPerSample;
+
+	if (format->wBitsPerSample == 0)
+		ios->audioFormat.mBitsPerChannel = 16;
+
+	ios->audioFormat.mChannelsPerFrame = ios->format.nChannels;
+	ios->audioFormat.mFramesPerPacket = 1;
+
+	ios->audioFormat.mBytesPerFrame =
+	    ios->audioFormat.mChannelsPerFrame * (ios->audioFormat.mBitsPerChannel / 8);
+	ios->audioFormat.mBytesPerPacket =
+	    ios->audioFormat.mBytesPerFrame * ios->audioFormat.mFramesPerPacket;
+
+	ios->audioFormat.mFormatFlags = audin_ios_get_flags_for_format(format);
+	ios->audioFormat.mFormatID = audin_ios_get_format(format);
+	ios->audioFormat.mReserved = 0;
+	ios->audioFormat.mSampleRate = ios->format.nSamplesPerSec;
+	return CHANNEL_RC_OK;
+}
+
+static void ios_audio_queue_input_cb(void *aqData, AudioQueueRef inAQ, AudioQueueBufferRef inBuffer,
+                                     const AudioTimeStamp *inStartTime, UInt32 inNumPackets,
+                                     const AudioStreamPacketDescription *inPacketDesc)
+{
+	AudinIosDevice *ios = (AudinIosDevice *)aqData;
+	UINT error = CHANNEL_RC_OK;
+	const BYTE *buffer = inBuffer->mAudioData;
+	int buffer_size = inBuffer->mAudioDataByteSize;
+	(void)inAQ;
+	(void)inStartTime;
+	(void)inNumPackets;
+	(void)inPacketDesc;
+
+	if (buffer_size > 0)
+		error = ios->receive(&ios->format, buffer, buffer_size, ios->user_data);
+
+	AudioQueueEnqueueBuffer(inAQ, inBuffer, 0, NULL);
+
+	if (error)
+	{
+		WLog_ERR(TAG, "ios->receive failed with error %" PRIu32 "", error);
+		SetLastError(ERROR_INTERNAL_ERROR);
+	}
+}
+
+static UINT audin_ios_close(IAudinDevice *device)
+{
+	UINT errCode = CHANNEL_RC_OK;
+	char errString[1024];
+	OSStatus devStat;
+	AudinIosDevice *ios = (AudinIosDevice *)device;
+
+	if (device == NULL)
+		return ERROR_INVALID_PARAMETER;
+
+	if (ios->isOpen)
+	{
+		devStat = AudioQueueStop(ios->audioQueue, true);
+
+		if (devStat != 0)
+		{
+			errCode = GetLastError();
+			WLog_ERR(TAG, "AudioQueueStop failed with %s [%" PRIu32 "]",
+			         winpr_strerror(errCode, errString, sizeof(errString)), errCode);
+		}
+
+		ios->isOpen = false;
+	}
+
+	if (ios->audioQueue)
+	{
+		devStat = AudioQueueDispose(ios->audioQueue, true);
+
+		if (devStat != 0)
+		{
+			errCode = GetLastError();
+			WLog_ERR(TAG, "AudioQueueDispose failed with %s [%" PRIu32 "]",
+			         winpr_strerror(errCode, errString, sizeof(errString)), errCode);
+		}
+
+		ios->audioQueue = NULL;
+	}
+
+	ios->receive = NULL;
+	ios->user_data = NULL;
+	return errCode;
+}
+
+static UINT audin_ios_open(IAudinDevice *device, AudinReceive receive, void *user_data)
+{
+	AudinIosDevice *ios = (AudinIosDevice *)device;
+	DWORD errCode;
+	char errString[1024];
+	OSStatus devStat;
+
+	ios->receive = receive;
+	ios->user_data = user_data;
+	devStat = AudioQueueNewInput(&(ios->audioFormat), ios_audio_queue_input_cb, ios, NULL,
+	                             kCFRunLoopCommonModes, 0, &(ios->audioQueue));
+
+	if (devStat != 0)
+	{
+		errCode = GetLastError();
+		WLog_ERR(TAG, "AudioQueueNewInput failed with %s [%" PRIu32 "]",
+		         winpr_strerror(errCode, errString, sizeof(errString)), errCode);
+		goto err_out;
+	}
+
+	for (size_t index = 0; index < IOS_AUDIO_QUEUE_NUM_BUFFERS; index++)
+	{
+		devStat = AudioQueueAllocateBuffer(ios->audioQueue,
+		                                   ios->FramesPerPacket * 2 * ios->format.nChannels,
+		                                   &ios->audioBuffers[index]);
+
+		if (devStat != 0)
+		{
+			errCode = GetLastError();
+			WLog_ERR(TAG, "AudioQueueAllocateBuffer failed with %s [%" PRIu32 "]",
+			         winpr_strerror(errCode, errString, sizeof(errString)), errCode);
+			goto err_out;
+		}
+
+		devStat = AudioQueueEnqueueBuffer(ios->audioQueue, ios->audioBuffers[index], 0, NULL);
+
+		if (devStat != 0)
+		{
+			errCode = GetLastError();
+			WLog_ERR(TAG, "AudioQueueEnqueueBuffer failed with %s [%" PRIu32 "]",
+			         winpr_strerror(errCode, errString, sizeof(errString)), errCode);
+			goto err_out;
+		}
+	}
+
+	devStat = AudioQueueStart(ios->audioQueue, NULL);
+
+	if (devStat != 0)
+	{
+		errCode = GetLastError();
+		WLog_ERR(TAG, "AudioQueueStart failed with %s [%" PRIu32 "]",
+		         winpr_strerror(errCode, errString, sizeof(errString)), errCode);
+		goto err_out;
+	}
+
+	ios->isOpen = true;
+	return CHANNEL_RC_OK;
+err_out:
+	audin_ios_close(device);
+	return CHANNEL_RC_INITIALIZATION_ERROR;
+}
+
+static UINT audin_ios_free(IAudinDevice *device)
+{
+	AudinIosDevice *ios = (AudinIosDevice *)device;
+	int error;
+
+	if (device == NULL)
+		return ERROR_INVALID_PARAMETER;
+
+	if ((error = audin_ios_close(device)))
+	{
+		WLog_ERR(TAG, "audin_oss_close failed with error code %d!", error);
+	}
+
+	free(ios);
+	return CHANNEL_RC_OK;
+}
+
+FREERDP_ENTRY_POINT(UINT VCAPITYPE ios_freerdp_audin_client_subsystem_entry(
+    PFREERDP_AUDIN_DEVICE_ENTRY_POINTS pEntryPoints))
+{
+	DWORD errCode;
+	char errString[1024];
+	const ADDIN_ARGV *args;
+	AudinIosDevice *ios;
+	UINT error;
+	ios = (AudinIosDevice *)calloc(1, sizeof(AudinIosDevice));
+
+	if (!ios)
+	{
+		errCode = GetLastError();
+		WLog_ERR(TAG, "calloc failed with %s [%" PRIu32 "]",
+		         winpr_strerror(errCode, errString, sizeof(errString)), errCode);
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	ios->iface.Open = audin_ios_open;
+	ios->iface.FormatSupported = audin_ios_format_supported;
+	ios->iface.SetFormat = audin_ios_set_format;
+	ios->iface.Close = audin_ios_close;
+	ios->iface.Free = audin_ios_free;
+	ios->rdpcontext = pEntryPoints->rdpcontext;
+	ios->dev_unit = -1;
+	args = pEntryPoints->args;
+
+	if ((error = pEntryPoints->pRegisterAudinDevice(pEntryPoints->plugin, (IAudinDevice *)ios)))
+	{
+		WLog_ERR(TAG, "RegisterAudinDevice failed with error %" PRIu32 "!", error);
+		goto error_out;
+	}
+
+	return CHANNEL_RC_OK;
+error_out:
+	free(ios);
+	return error;
+}

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/mac/CMakeLists.txt

@@ -0,0 +1,32 @@
+# FreeRDP: A Remote Desktop Protocol Implementation
+# FreeRDP cmake build script
+#
+# Copyright (c) 2015 Armin Novak <armin.novak@thincast.com>
+# Copyright (c) 2015 Thincast Technologies GmbH
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+define_channel_client_subsystem("audin" "mac" "")
+find_library(CORE_AUDIO CoreAudio)
+find_library(AVFOUNDATION AVFoundation)
+find_library(AUDIO_TOOL AudioToolbox)
+find_library(APP_SERVICES ApplicationServices)
+
+set(${MODULE_PREFIX}_SRCS audin_mac.m)
+
+set(${MODULE_PREFIX}_LIBS winpr freerdp ${AVFOUNDATION} ${CORE_AUDIO} ${AUDIO_TOOL} ${APP_SERVICES})
+
+include_directories(..)
+include_directories(SYSTEM ${MAC_INCLUDE_DIRS})
+
+add_channel_client_subsystem_library(${MODULE_PREFIX} ${MODULE_NAME} ${CHANNEL_NAME} "" TRUE "")

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/mac/audin_mac.m

@@ -0,0 +1,463 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Audio Input Redirection Virtual Channel - Mac OS X implementation
+ *
+ * Copyright (c) 2015 Armin Novak <armin.novak@thincast.com>
+ * Copyright 2015 Thincast Technologies GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <winpr/crt.h>
+#include <winpr/synch.h>
+#include <winpr/string.h>
+#include <winpr/thread.h>
+#include <winpr/debug.h>
+#include <winpr/cmdline.h>
+
+#import <AVFoundation/AVFoundation.h>
+
+#define __COREFOUNDATION_CFPLUGINCOM__ 1
+#define IUNKNOWN_C_GUTS   \
+	void *_reserved;      \
+	void *QueryInterface; \
+	void *AddRef;         \
+	void *Release
+
+#include <CoreAudio/CoreAudioTypes.h>
+#include <CoreAudio/CoreAudio.h>
+#include <AudioToolbox/AudioToolbox.h>
+#include <AudioToolbox/AudioQueue.h>
+
+#include <freerdp/addin.h>
+#include <freerdp/channels/rdpsnd.h>
+
+#include "audin_main.h"
+
+#define MAC_AUDIO_QUEUE_NUM_BUFFERS 100
+
+/* Fix for #4462: Provide type alias if not declared (Mac OS < 10.10)
+ * https://developer.apple.com/documentation/coreaudio/audioformatid
+ */
+#ifndef AudioFormatID
+typedef UInt32 AudioFormatID;
+#endif
+
+#ifndef AudioFormatFlags
+typedef UInt32 AudioFormatFlags;
+#endif
+
+typedef struct
+{
+	IAudinDevice iface;
+
+	AUDIO_FORMAT format;
+	UINT32 FramesPerPacket;
+	int dev_unit;
+
+	AudinReceive receive;
+	void *user_data;
+
+	rdpContext *rdpcontext;
+
+	bool isAuthorized;
+	bool isOpen;
+	AudioQueueRef audioQueue;
+	AudioStreamBasicDescription audioFormat;
+	AudioQueueBufferRef audioBuffers[MAC_AUDIO_QUEUE_NUM_BUFFERS];
+} AudinMacDevice;
+
+static AudioFormatID audin_mac_get_format(const AUDIO_FORMAT *format)
+{
+	switch (format->wFormatTag)
+	{
+		case WAVE_FORMAT_PCM:
+			return kAudioFormatLinearPCM;
+
+		default:
+			return 0;
+	}
+}
+
+static AudioFormatFlags audin_mac_get_flags_for_format(const AUDIO_FORMAT *format)
+{
+	switch (format->wFormatTag)
+	{
+		case WAVE_FORMAT_PCM:
+			return kAudioFormatFlagIsSignedInteger;
+
+		default:
+			return 0;
+	}
+}
+
+static BOOL audin_mac_format_supported(IAudinDevice *device, const AUDIO_FORMAT *format)
+{
+	AudinMacDevice *mac = (AudinMacDevice *)device;
+	AudioFormatID req_fmt = 0;
+
+	if (!mac->isAuthorized)
+		return FALSE;
+
+	if (device == NULL || format == NULL)
+		return FALSE;
+
+	if (format->nChannels != 2)
+		return FALSE;
+
+	req_fmt = audin_mac_get_format(format);
+
+	if (req_fmt == 0)
+		return FALSE;
+
+	return TRUE;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_mac_set_format(IAudinDevice *device, const AUDIO_FORMAT *format,
+                                 UINT32 FramesPerPacket)
+{
+	AudinMacDevice *mac = (AudinMacDevice *)device;
+
+	if (!mac->isAuthorized)
+		return ERROR_INTERNAL_ERROR;
+
+	if (device == NULL || format == NULL)
+		return ERROR_INVALID_PARAMETER;
+
+	mac->FramesPerPacket = FramesPerPacket;
+	mac->format = *format;
+	WLog_INFO(TAG, "Audio Format %s [channels=%d, samples=%d, bits=%d]",
+	          audio_format_get_tag_string(format->wFormatTag), format->nChannels,
+	          format->nSamplesPerSec, format->wBitsPerSample);
+	mac->audioFormat.mBitsPerChannel = format->wBitsPerSample;
+
+	if (format->wBitsPerSample == 0)
+		mac->audioFormat.mBitsPerChannel = 16;
+
+	mac->audioFormat.mChannelsPerFrame = mac->format.nChannels;
+	mac->audioFormat.mFramesPerPacket = 1;
+
+	mac->audioFormat.mBytesPerFrame =
+	    mac->audioFormat.mChannelsPerFrame * (mac->audioFormat.mBitsPerChannel / 8);
+	mac->audioFormat.mBytesPerPacket =
+	    mac->audioFormat.mBytesPerFrame * mac->audioFormat.mFramesPerPacket;
+
+	mac->audioFormat.mFormatFlags = audin_mac_get_flags_for_format(format);
+	mac->audioFormat.mFormatID = audin_mac_get_format(format);
+	mac->audioFormat.mReserved = 0;
+	mac->audioFormat.mSampleRate = mac->format.nSamplesPerSec;
+	return CHANNEL_RC_OK;
+}
+
+static void mac_audio_queue_input_cb(void *aqData, AudioQueueRef inAQ, AudioQueueBufferRef inBuffer,
+                                     const AudioTimeStamp *inStartTime, UInt32 inNumPackets,
+                                     const AudioStreamPacketDescription *inPacketDesc)
+{
+	AudinMacDevice *mac = (AudinMacDevice *)aqData;
+	UINT error = CHANNEL_RC_OK;
+	const BYTE *buffer = inBuffer->mAudioData;
+	int buffer_size = inBuffer->mAudioDataByteSize;
+	(void)inAQ;
+	(void)inStartTime;
+	(void)inNumPackets;
+	(void)inPacketDesc;
+
+	if (buffer_size > 0)
+		error = mac->receive(&mac->format, buffer, buffer_size, mac->user_data);
+
+	AudioQueueEnqueueBuffer(inAQ, inBuffer, 0, NULL);
+
+	if (error)
+	{
+		WLog_ERR(TAG, "mac->receive failed with error %" PRIu32 "", error);
+		SetLastError(ERROR_INTERNAL_ERROR);
+	}
+}
+
+static UINT audin_mac_close(IAudinDevice *device)
+{
+	UINT errCode = CHANNEL_RC_OK;
+	char errString[1024];
+	OSStatus devStat;
+	AudinMacDevice *mac = (AudinMacDevice *)device;
+
+	if (!mac->isAuthorized)
+		return ERROR_INTERNAL_ERROR;
+
+	if (device == NULL)
+		return ERROR_INVALID_PARAMETER;
+
+	if (mac->isOpen)
+	{
+		devStat = AudioQueueStop(mac->audioQueue, true);
+
+		if (devStat != 0)
+		{
+			errCode = GetLastError();
+			WLog_ERR(TAG, "AudioQueueStop failed with %s [%" PRIu32 "]",
+			         winpr_strerror(errCode, errString, sizeof(errString)), errCode);
+		}
+
+		mac->isOpen = false;
+	}
+
+	if (mac->audioQueue)
+	{
+		devStat = AudioQueueDispose(mac->audioQueue, true);
+
+		if (devStat != 0)
+		{
+			errCode = GetLastError();
+			WLog_ERR(TAG, "AudioQueueDispose failed with %s [%" PRIu32 "]",
+			         winpr_strerror(errCode, errString, sizeof(errString)), errCode);
+		}
+
+		mac->audioQueue = NULL;
+	}
+
+	mac->receive = NULL;
+	mac->user_data = NULL;
+	return errCode;
+}
+
+static UINT audin_mac_open(IAudinDevice *device, AudinReceive receive, void *user_data)
+{
+	AudinMacDevice *mac = (AudinMacDevice *)device;
+	DWORD errCode;
+	char errString[1024];
+	OSStatus devStat;
+
+	if (!mac->isAuthorized)
+		return ERROR_INTERNAL_ERROR;
+
+	mac->receive = receive;
+	mac->user_data = user_data;
+	devStat = AudioQueueNewInput(&(mac->audioFormat), mac_audio_queue_input_cb, mac, NULL,
+	                             kCFRunLoopCommonModes, 0, &(mac->audioQueue));
+
+	if (devStat != 0)
+	{
+		errCode = GetLastError();
+		WLog_ERR(TAG, "AudioQueueNewInput failed with %s [%" PRIu32 "]",
+		         winpr_strerror(errCode, errString, sizeof(errString)), errCode);
+		goto err_out;
+	}
+
+	for (size_t index = 0; index < MAC_AUDIO_QUEUE_NUM_BUFFERS; index++)
+	{
+		devStat = AudioQueueAllocateBuffer(mac->audioQueue,
+		                                   mac->FramesPerPacket * 2 * mac->format.nChannels,
+		                                   &mac->audioBuffers[index]);
+
+		if (devStat != 0)
+		{
+			errCode = GetLastError();
+			WLog_ERR(TAG, "AudioQueueAllocateBuffer failed with %s [%" PRIu32 "]",
+			         winpr_strerror(errCode, errString, sizeof(errString)), errCode);
+			goto err_out;
+		}
+
+		devStat = AudioQueueEnqueueBuffer(mac->audioQueue, mac->audioBuffers[index], 0, NULL);
+
+		if (devStat != 0)
+		{
+			errCode = GetLastError();
+			WLog_ERR(TAG, "AudioQueueEnqueueBuffer failed with %s [%" PRIu32 "]",
+			         winpr_strerror(errCode, errString, sizeof(errString)), errCode);
+			goto err_out;
+		}
+	}
+
+	devStat = AudioQueueStart(mac->audioQueue, NULL);
+
+	if (devStat != 0)
+	{
+		errCode = GetLastError();
+		WLog_ERR(TAG, "AudioQueueStart failed with %s [%" PRIu32 "]",
+		         winpr_strerror(errCode, errString, sizeof(errString)), errCode);
+		goto err_out;
+	}
+
+	mac->isOpen = true;
+	return CHANNEL_RC_OK;
+err_out:
+	audin_mac_close(device);
+	return CHANNEL_RC_INITIALIZATION_ERROR;
+}
+
+static UINT audin_mac_free(IAudinDevice *device)
+{
+	AudinMacDevice *mac = (AudinMacDevice *)device;
+	int error;
+
+	if (device == NULL)
+		return ERROR_INVALID_PARAMETER;
+
+	if ((error = audin_mac_close(device)))
+	{
+		WLog_ERR(TAG, "audin_oss_close failed with error code %d!", error);
+	}
+
+	free(mac);
+	return CHANNEL_RC_OK;
+}
+
+static UINT audin_mac_parse_addin_args(AudinMacDevice *device, const ADDIN_ARGV *args)
+{
+	DWORD errCode;
+	char errString[1024];
+	int status;
+	char *str_num, *eptr;
+	DWORD flags;
+	const COMMAND_LINE_ARGUMENT_A *arg;
+	COMMAND_LINE_ARGUMENT_A audin_mac_args[] = { { "dev", COMMAND_LINE_VALUE_REQUIRED, "<device>",
+		                                           NULL, NULL, -1, NULL, "audio device name" },
+		                                         { NULL, 0, NULL, NULL, NULL, -1, NULL, NULL } };
+
+	AudinMacDevice *mac = (AudinMacDevice *)device;
+
+	if (args->argc == 1)
+		return CHANNEL_RC_OK;
+
+	flags =
+	    COMMAND_LINE_SIGIL_NONE | COMMAND_LINE_SEPARATOR_COLON | COMMAND_LINE_IGN_UNKNOWN_KEYWORD;
+	status =
+	    CommandLineParseArgumentsA(args->argc, args->argv, audin_mac_args, flags, mac, NULL, NULL);
+
+	if (status < 0)
+		return ERROR_INVALID_PARAMETER;
+
+	arg = audin_mac_args;
+
+	do
+	{
+		if (!(arg->Flags & COMMAND_LINE_VALUE_PRESENT))
+			continue;
+
+		CommandLineSwitchStart(arg) CommandLineSwitchCase(arg, "dev")
+		{
+			str_num = _strdup(arg->Value);
+
+			if (!str_num)
+			{
+				errCode = GetLastError();
+				WLog_ERR(TAG, "_strdup failed with %s [%d]",
+				         winpr_strerror(errCode, errString, sizeof(errString)), errCode);
+				return CHANNEL_RC_NO_MEMORY;
+			}
+
+			mac->dev_unit = strtol(str_num, &eptr, 10);
+
+			if (mac->dev_unit < 0 || *eptr != '\0')
+				mac->dev_unit = -1;
+
+			free(str_num);
+		}
+		CommandLineSwitchEnd(arg)
+	} while ((arg = CommandLineFindNextArgumentA(arg)) != NULL);
+
+	return CHANNEL_RC_OK;
+}
+
+FREERDP_ENTRY_POINT(UINT VCAPITYPE mac_freerdp_audin_client_subsystem_entry(
+    PFREERDP_AUDIN_DEVICE_ENTRY_POINTS pEntryPoints))
+{
+	DWORD errCode;
+	char errString[1024];
+	const ADDIN_ARGV *args;
+	AudinMacDevice *mac;
+	UINT error;
+	mac = (AudinMacDevice *)calloc(1, sizeof(AudinMacDevice));
+
+	if (!mac)
+	{
+		errCode = GetLastError();
+		WLog_ERR(TAG, "calloc failed with %s [%" PRIu32 "]",
+		         winpr_strerror(errCode, errString, sizeof(errString)), errCode);
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	mac->iface.Open = audin_mac_open;
+	mac->iface.FormatSupported = audin_mac_format_supported;
+	mac->iface.SetFormat = audin_mac_set_format;
+	mac->iface.Close = audin_mac_close;
+	mac->iface.Free = audin_mac_free;
+	mac->rdpcontext = pEntryPoints->rdpcontext;
+	mac->dev_unit = -1;
+	args = pEntryPoints->args;
+
+	if ((error = audin_mac_parse_addin_args(mac, args)))
+	{
+		WLog_ERR(TAG, "audin_mac_parse_addin_args failed with %" PRIu32 "!", error);
+		goto error_out;
+	}
+
+	if ((error = pEntryPoints->pRegisterAudinDevice(pEntryPoints->plugin, (IAudinDevice *)mac)))
+	{
+		WLog_ERR(TAG, "RegisterAudinDevice failed with error %" PRIu32 "!", error);
+		goto error_out;
+	}
+
+#if defined(MAC_OS_X_VERSION_10_14)
+	if (@available(macOS 10.14, *))
+	{
+		@autoreleasepool
+		{
+			AVAuthorizationStatus status =
+			    [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeAudio];
+			switch (status)
+			{
+				case AVAuthorizationStatusAuthorized:
+					mac->isAuthorized = TRUE;
+					break;
+				case AVAuthorizationStatusNotDetermined:
+					[AVCaptureDevice
+					    requestAccessForMediaType:AVMediaTypeAudio
+					            completionHandler:^(BOOL granted) {
+						            if (granted == YES)
+						            {
+							            mac->isAuthorized = TRUE;
+						            }
+						            else
+							            WLog_WARN(TAG, "Microphone access denied by user");
+					            }];
+					break;
+				case AVAuthorizationStatusRestricted:
+					WLog_WARN(TAG, "Microphone access restricted by policy");
+					break;
+				case AVAuthorizationStatusDenied:
+					WLog_WARN(TAG, "Microphone access denied by policy");
+					break;
+				default:
+					break;
+			}
+		}
+	}
+#endif
+
+	return CHANNEL_RC_OK;
+error_out:
+	free(mac);
+	return error;
+}

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/opensles/CMakeLists.txt

@@ -0,0 +1,29 @@
+# FreeRDP: A Remote Desktop Protocol Implementation
+# FreeRDP cmake build script
+#
+# Copyright 2013 Armin Novak <armin.novak@gmail.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+define_channel_client_subsystem("audin" "opensles" "")
+
+find_package(OpenSLES REQUIRED)
+
+set(${MODULE_PREFIX}_SRCS opensl_io.c audin_opensl_es.c)
+
+set(${MODULE_PREFIX}_LIBS winpr freerdp ${OpenSLES_LIBRARIES})
+
+include_directories(..)
+include_directories(SYSTEM ${OpenSLES_INCLUDE_DIRS})
+
+add_channel_client_subsystem_library(${MODULE_PREFIX} ${MODULE_NAME} ${CHANNEL_NAME} "" TRUE "")

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/opensles/audin_opensl_es.c

@@ -0,0 +1,336 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Audio Input Redirection Virtual Channel - OpenSL ES implementation
+ *
+ * Copyright 2013 Armin Novak <armin.novak@gmail.com>
+ * Copyright 2015 Thincast Technologies GmbH
+ * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/config.h>
+
+#include <winpr/assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <winpr/crt.h>
+#include <winpr/cmdline.h>
+
+#include <freerdp/freerdp.h>
+#include <freerdp/addin.h>
+#include <freerdp/channels/rdpsnd.h>
+
+#include <SLES/OpenSLES.h>
+#include <freerdp/client/audin.h>
+
+#include "audin_main.h"
+#include "opensl_io.h"
+
+typedef struct
+{
+	IAudinDevice iface;
+
+	char* device_name;
+	OPENSL_STREAM* stream;
+
+	AUDIO_FORMAT format;
+	UINT32 frames_per_packet;
+
+	UINT32 bytes_per_channel;
+
+	AudinReceive receive;
+
+	void* user_data;
+
+	rdpContext* rdpcontext;
+	wLog* log;
+} AudinOpenSLESDevice;
+
+static UINT audin_opensles_close(IAudinDevice* device);
+
+static void audin_receive(void* context, const void* data, size_t size)
+{
+	UINT error;
+	AudinOpenSLESDevice* opensles = (AudinOpenSLESDevice*)context;
+
+	if (!opensles || !data)
+	{
+		WLog_ERR(TAG, "Invalid arguments context=%p, data=%p", opensles, data);
+		return;
+	}
+
+	error = opensles->receive(&opensles->format, data, size, opensles->user_data);
+
+	if (error && opensles->rdpcontext)
+		setChannelError(opensles->rdpcontext, error, "audin_receive reported an error");
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_opensles_free(IAudinDevice* device)
+{
+	AudinOpenSLESDevice* opensles = (AudinOpenSLESDevice*)device;
+
+	if (!opensles)
+		return ERROR_INVALID_PARAMETER;
+
+	WLog_Print(opensles->log, WLOG_DEBUG, "device=%p", (void*)device);
+
+	free(opensles->device_name);
+	free(opensles);
+	return CHANNEL_RC_OK;
+}
+
+static BOOL audin_opensles_format_supported(IAudinDevice* device, const AUDIO_FORMAT* format)
+{
+	AudinOpenSLESDevice* opensles = (AudinOpenSLESDevice*)device;
+
+	if (!opensles || !format)
+		return FALSE;
+
+	WLog_Print(opensles->log, WLOG_DEBUG, "device=%p, format=%p", (void*)opensles, (void*)format);
+	WINPR_ASSERT(format);
+
+	switch (format->wFormatTag)
+	{
+		case WAVE_FORMAT_PCM: /* PCM */
+			if (format->cbSize == 0 && (format->nSamplesPerSec <= 48000) &&
+			    (format->wBitsPerSample == 8 || format->wBitsPerSample == 16) &&
+			    (format->nChannels >= 1 && format->nChannels <= 2))
+			{
+				return TRUE;
+			}
+
+			break;
+
+		default:
+			WLog_Print(opensles->log, WLOG_DEBUG, "Encoding '%s' [0x%04" PRIX16 "] not supported",
+			           audio_format_get_tag_string(format->wFormatTag), format->wFormatTag);
+			break;
+	}
+
+	return FALSE;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_opensles_set_format(IAudinDevice* device, const AUDIO_FORMAT* format,
+                                      UINT32 FramesPerPacket)
+{
+	AudinOpenSLESDevice* opensles = (AudinOpenSLESDevice*)device;
+
+	if (!opensles || !format)
+		return ERROR_INVALID_PARAMETER;
+
+	WLog_Print(opensles->log, WLOG_DEBUG, "device=%p, format=%p, FramesPerPacket=%" PRIu32 "",
+	           (void*)device, (void*)format, FramesPerPacket);
+	WINPR_ASSERT(format);
+
+	opensles->format = *format;
+
+	switch (format->wFormatTag)
+	{
+		case WAVE_FORMAT_PCM:
+			opensles->frames_per_packet = FramesPerPacket;
+
+			switch (format->wBitsPerSample)
+			{
+				case 4:
+					opensles->bytes_per_channel = 1;
+					break;
+
+				case 8:
+					opensles->bytes_per_channel = 1;
+					break;
+
+				case 16:
+					opensles->bytes_per_channel = 2;
+					break;
+
+				default:
+					return ERROR_UNSUPPORTED_TYPE;
+			}
+
+			break;
+
+		default:
+			WLog_Print(opensles->log, WLOG_ERROR,
+			           "Encoding '%" PRIu16 "' [%04" PRIX16 "] not supported", format->wFormatTag,
+			           format->wFormatTag);
+			return ERROR_UNSUPPORTED_TYPE;
+	}
+
+	WLog_Print(opensles->log, WLOG_DEBUG, "frames_per_packet=%" PRIu32,
+	           opensles->frames_per_packet);
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_opensles_open(IAudinDevice* device, AudinReceive receive, void* user_data)
+{
+	AudinOpenSLESDevice* opensles = (AudinOpenSLESDevice*)device;
+
+	if (!opensles || !receive || !user_data)
+		return ERROR_INVALID_PARAMETER;
+
+	WLog_Print(opensles->log, WLOG_DEBUG, "device=%p, receive=%p, user_data=%p", (void*)device,
+	           (void*)receive, (void*)user_data);
+
+	if (opensles->stream)
+		goto error_out;
+
+	if (!(opensles->stream = android_OpenRecDevice(
+	          opensles, audin_receive, opensles->format.nSamplesPerSec, opensles->format.nChannels,
+	          opensles->frames_per_packet, opensles->format.wBitsPerSample)))
+	{
+		WLog_Print(opensles->log, WLOG_ERROR, "android_OpenRecDevice failed!");
+		goto error_out;
+	}
+
+	opensles->receive = receive;
+	opensles->user_data = user_data;
+	return CHANNEL_RC_OK;
+error_out:
+	audin_opensles_close(device);
+	return ERROR_INTERNAL_ERROR;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+UINT audin_opensles_close(IAudinDevice* device)
+{
+	AudinOpenSLESDevice* opensles = (AudinOpenSLESDevice*)device;
+
+	if (!opensles)
+		return ERROR_INVALID_PARAMETER;
+
+	WLog_Print(opensles->log, WLOG_DEBUG, "device=%p", (void*)device);
+	android_CloseRecDevice(opensles->stream);
+	opensles->receive = NULL;
+	opensles->user_data = NULL;
+	opensles->stream = NULL;
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_opensles_parse_addin_args(AudinOpenSLESDevice* device, const ADDIN_ARGV* args)
+{
+	UINT status;
+	DWORD flags;
+	const COMMAND_LINE_ARGUMENT_A* arg;
+	AudinOpenSLESDevice* opensles = (AudinOpenSLESDevice*)device;
+	COMMAND_LINE_ARGUMENT_A audin_opensles_args[] = {
+		{ "dev", COMMAND_LINE_VALUE_REQUIRED, "<device>", NULL, NULL, -1, NULL,
+		  "audio device name" },
+		{ NULL, 0, NULL, NULL, NULL, -1, NULL, NULL }
+	};
+
+	WLog_Print(opensles->log, WLOG_DEBUG, "device=%p, args=%p", (void*)device, (void*)args);
+	flags =
+	    COMMAND_LINE_SIGIL_NONE | COMMAND_LINE_SEPARATOR_COLON | COMMAND_LINE_IGN_UNKNOWN_KEYWORD;
+	status = CommandLineParseArgumentsA(args->argc, args->argv, audin_opensles_args, flags,
+	                                    opensles, NULL, NULL);
+
+	if (status < 0)
+		return status;
+
+	arg = audin_opensles_args;
+
+	do
+	{
+		if (!(arg->Flags & COMMAND_LINE_VALUE_PRESENT))
+			continue;
+
+		CommandLineSwitchStart(arg) CommandLineSwitchCase(arg, "dev")
+		{
+			opensles->device_name = _strdup(arg->Value);
+
+			if (!opensles->device_name)
+			{
+				WLog_Print(opensles->log, WLOG_ERROR, "_strdup failed!");
+				return CHANNEL_RC_NO_MEMORY;
+			}
+		}
+		CommandLineSwitchEnd(arg)
+	} while ((arg = CommandLineFindNextArgumentA(arg)) != NULL);
+
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+FREERDP_ENTRY_POINT(UINT VCAPITYPE opensles_freerdp_audin_client_subsystem_entry(
+    PFREERDP_AUDIN_DEVICE_ENTRY_POINTS pEntryPoints))
+{
+	const ADDIN_ARGV* args;
+	AudinOpenSLESDevice* opensles;
+	UINT error;
+	opensles = (AudinOpenSLESDevice*)calloc(1, sizeof(AudinOpenSLESDevice));
+
+	if (!opensles)
+	{
+		WLog_ERR(TAG, "calloc failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	opensles->log = WLog_Get(TAG);
+	opensles->iface.Open = audin_opensles_open;
+	opensles->iface.FormatSupported = audin_opensles_format_supported;
+	opensles->iface.SetFormat = audin_opensles_set_format;
+	opensles->iface.Close = audin_opensles_close;
+	opensles->iface.Free = audin_opensles_free;
+	opensles->rdpcontext = pEntryPoints->rdpcontext;
+	args = pEntryPoints->args;
+
+	if ((error = audin_opensles_parse_addin_args(opensles, args)))
+	{
+		WLog_Print(opensles->log, WLOG_ERROR,
+		           "audin_opensles_parse_addin_args failed with errorcode %" PRIu32 "!", error);
+		goto error_out;
+	}
+
+	if ((error = pEntryPoints->pRegisterAudinDevice(pEntryPoints->plugin, (IAudinDevice*)opensles)))
+	{
+		WLog_Print(opensles->log, WLOG_ERROR, "RegisterAudinDevice failed with error %" PRIu32 "!",
+		           error);
+		goto error_out;
+	}
+
+	return CHANNEL_RC_OK;
+error_out:
+	free(opensles);
+	return error;
+}

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/opensles/opensl_io.c

@@ -0,0 +1,388 @@
+/*
+opensl_io.c:
+Android OpenSL input/output module
+Copyright (c) 2012, Victor Lazzarini
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the <organization> nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <winpr/assert.h>
+
+#include "audin_main.h"
+#include "opensl_io.h"
+#define CONV16BIT 32768
+#define CONVMYFLT (1. / 32768.)
+
+typedef struct
+{
+	size_t size;
+	void* data;
+} queue_element;
+
+struct opensl_stream
+{
+	// engine interfaces
+	SLObjectItf engineObject;
+	SLEngineItf engineEngine;
+
+	// device interfaces
+	SLDeviceVolumeItf deviceVolume;
+
+	// recorder interfaces
+	SLObjectItf recorderObject;
+	SLRecordItf recorderRecord;
+	SLAndroidSimpleBufferQueueItf recorderBufferQueue;
+
+	unsigned int inchannels;
+	unsigned int sr;
+	unsigned int buffersize;
+	unsigned int bits_per_sample;
+
+	queue_element* prep;
+	queue_element* next;
+
+	void* context;
+	opensl_receive_t receive;
+};
+
+static void bqRecorderCallback(SLAndroidSimpleBufferQueueItf bq, void* context);
+
+// creates the OpenSL ES audio engine
+static SLresult openSLCreateEngine(OPENSL_STREAM* p)
+{
+	SLresult result;
+	// create engine
+	result = slCreateEngine(&(p->engineObject), 0, NULL, 0, NULL, NULL);
+
+	if (result != SL_RESULT_SUCCESS)
+		goto engine_end;
+
+	// realize the engine
+	result = (*p->engineObject)->Realize(p->engineObject, SL_BOOLEAN_FALSE);
+
+	if (result != SL_RESULT_SUCCESS)
+		goto engine_end;
+
+	// get the engine interface, which is needed in order to create other objects
+	result = (*p->engineObject)->GetInterface(p->engineObject, SL_IID_ENGINE, &(p->engineEngine));
+
+	if (result != SL_RESULT_SUCCESS)
+		goto engine_end;
+
+	// get the volume interface - important, this is optional!
+	result =
+	    (*p->engineObject)->GetInterface(p->engineObject, SL_IID_DEVICEVOLUME, &(p->deviceVolume));
+
+	if (result != SL_RESULT_SUCCESS)
+	{
+		p->deviceVolume = NULL;
+		result = SL_RESULT_SUCCESS;
+	}
+
+engine_end:
+	WINPR_ASSERT(SL_RESULT_SUCCESS == result);
+	return result;
+}
+
+// Open the OpenSL ES device for input
+static SLresult openSLRecOpen(OPENSL_STREAM* p)
+{
+	SLresult result;
+	SLuint32 sr = p->sr;
+	SLuint32 channels = p->inchannels;
+	WINPR_ASSERT(!p->recorderObject);
+
+	if (channels)
+	{
+		switch (sr)
+		{
+			case 8000:
+				sr = SL_SAMPLINGRATE_8;
+				break;
+
+			case 11025:
+				sr = SL_SAMPLINGRATE_11_025;
+				break;
+
+			case 16000:
+				sr = SL_SAMPLINGRATE_16;
+				break;
+
+			case 22050:
+				sr = SL_SAMPLINGRATE_22_05;
+				break;
+
+			case 24000:
+				sr = SL_SAMPLINGRATE_24;
+				break;
+
+			case 32000:
+				sr = SL_SAMPLINGRATE_32;
+				break;
+
+			case 44100:
+				sr = SL_SAMPLINGRATE_44_1;
+				break;
+
+			case 48000:
+				sr = SL_SAMPLINGRATE_48;
+				break;
+
+			case 64000:
+				sr = SL_SAMPLINGRATE_64;
+				break;
+
+			case 88200:
+				sr = SL_SAMPLINGRATE_88_2;
+				break;
+
+			case 96000:
+				sr = SL_SAMPLINGRATE_96;
+				break;
+
+			case 192000:
+				sr = SL_SAMPLINGRATE_192;
+				break;
+
+			default:
+				return -1;
+		}
+
+		// configure audio source
+		SLDataLocator_IODevice loc_dev = { SL_DATALOCATOR_IODEVICE, SL_IODEVICE_AUDIOINPUT,
+			                               SL_DEFAULTDEVICEID_AUDIOINPUT, NULL };
+		SLDataSource audioSrc = { &loc_dev, NULL };
+		// configure audio sink
+		int speakers;
+
+		if (channels > 1)
+			speakers = SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT;
+		else
+			speakers = SL_SPEAKER_FRONT_CENTER;
+
+		SLDataLocator_AndroidSimpleBufferQueue loc_bq = { SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE,
+			                                              2 };
+		SLDataFormat_PCM format_pcm;
+		format_pcm.formatType = SL_DATAFORMAT_PCM;
+		format_pcm.numChannels = channels;
+		format_pcm.samplesPerSec = sr;
+		format_pcm.channelMask = speakers;
+		format_pcm.endianness = SL_BYTEORDER_LITTLEENDIAN;
+
+		if (16 == p->bits_per_sample)
+		{
+			format_pcm.bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_16;
+			format_pcm.containerSize = 16;
+		}
+		else if (8 == p->bits_per_sample)
+		{
+			format_pcm.bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_8;
+			format_pcm.containerSize = 8;
+		}
+		else
+			WINPR_ASSERT(0);
+
+		SLDataSink audioSnk = { &loc_bq, &format_pcm };
+		// create audio recorder
+		// (requires the RECORD_AUDIO permission)
+		const SLInterfaceID id[] = { SL_IID_ANDROIDSIMPLEBUFFERQUEUE };
+		const SLboolean req[] = { SL_BOOLEAN_TRUE };
+		result = (*p->engineEngine)
+		             ->CreateAudioRecorder(p->engineEngine, &(p->recorderObject), &audioSrc,
+		                                   &audioSnk, 1, id, req);
+		WINPR_ASSERT(!result);
+
+		if (SL_RESULT_SUCCESS != result)
+			goto end_recopen;
+
+		// realize the audio recorder
+		result = (*p->recorderObject)->Realize(p->recorderObject, SL_BOOLEAN_FALSE);
+		WINPR_ASSERT(!result);
+
+		if (SL_RESULT_SUCCESS != result)
+			goto end_recopen;
+
+		// get the record interface
+		result = (*p->recorderObject)
+		             ->GetInterface(p->recorderObject, SL_IID_RECORD, &(p->recorderRecord));
+		WINPR_ASSERT(!result);
+
+		if (SL_RESULT_SUCCESS != result)
+			goto end_recopen;
+
+		// get the buffer queue interface
+		result = (*p->recorderObject)
+		             ->GetInterface(p->recorderObject, SL_IID_ANDROIDSIMPLEBUFFERQUEUE,
+		                            &(p->recorderBufferQueue));
+		WINPR_ASSERT(!result);
+
+		if (SL_RESULT_SUCCESS != result)
+			goto end_recopen;
+
+		// register callback on the buffer queue
+		result = (*p->recorderBufferQueue)
+		             ->RegisterCallback(p->recorderBufferQueue, bqRecorderCallback, p);
+		WINPR_ASSERT(!result);
+
+		if (SL_RESULT_SUCCESS != result)
+			goto end_recopen;
+
+	end_recopen:
+		return result;
+	}
+	else
+		return SL_RESULT_SUCCESS;
+}
+
+// close the OpenSL IO and destroy the audio engine
+static void openSLDestroyEngine(OPENSL_STREAM* p)
+{
+	// destroy audio recorder object, and invalidate all associated interfaces
+	if (p->recorderObject != NULL)
+	{
+		(*p->recorderObject)->Destroy(p->recorderObject);
+		p->recorderObject = NULL;
+		p->recorderRecord = NULL;
+		p->recorderBufferQueue = NULL;
+	}
+
+	// destroy engine object, and invalidate all associated interfaces
+	if (p->engineObject != NULL)
+	{
+		(*p->engineObject)->Destroy(p->engineObject);
+		p->engineObject = NULL;
+		p->engineEngine = NULL;
+	}
+}
+
+static queue_element* opensles_queue_element_new(size_t size)
+{
+	queue_element* q = calloc(1, sizeof(queue_element));
+
+	if (!q)
+		goto fail;
+
+	q->size = size;
+	q->data = malloc(size);
+
+	if (!q->data)
+		goto fail;
+
+	return q;
+fail:
+	free(q);
+	return NULL;
+}
+
+static void opensles_queue_element_free(void* obj)
+{
+	queue_element* e = (queue_element*)obj;
+
+	if (e)
+		free(e->data);
+
+	free(e);
+}
+
+// open the android audio device for input
+OPENSL_STREAM* android_OpenRecDevice(void* context, opensl_receive_t receive, int sr,
+                                     int inchannels, int bufferframes, int bits_per_sample)
+{
+	OPENSL_STREAM* p;
+
+	if (!context || !receive)
+		return NULL;
+
+	p = (OPENSL_STREAM*)calloc(1, sizeof(OPENSL_STREAM));
+
+	if (!p)
+		return NULL;
+
+	p->context = context;
+	p->receive = receive;
+	p->inchannels = inchannels;
+	p->sr = sr;
+	p->buffersize = bufferframes;
+	p->bits_per_sample = bits_per_sample;
+
+	if ((p->bits_per_sample != 8) && (p->bits_per_sample != 16))
+		goto fail;
+
+	if (openSLCreateEngine(p) != SL_RESULT_SUCCESS)
+		goto fail;
+
+	if (openSLRecOpen(p) != SL_RESULT_SUCCESS)
+		goto fail;
+
+	/* Create receive buffers, prepare them and start recording */
+	p->prep = opensles_queue_element_new(p->buffersize * p->bits_per_sample / 8);
+	p->next = opensles_queue_element_new(p->buffersize * p->bits_per_sample / 8);
+
+	if (!p->prep || !p->next)
+		goto fail;
+
+	(*p->recorderBufferQueue)->Enqueue(p->recorderBufferQueue, p->next->data, p->next->size);
+	(*p->recorderBufferQueue)->Enqueue(p->recorderBufferQueue, p->prep->data, p->prep->size);
+	(*p->recorderRecord)->SetRecordState(p->recorderRecord, SL_RECORDSTATE_RECORDING);
+	return p;
+fail:
+	android_CloseRecDevice(p);
+	return NULL;
+}
+
+// close the android audio device
+void android_CloseRecDevice(OPENSL_STREAM* p)
+{
+	if (p == NULL)
+		return;
+
+	opensles_queue_element_free(p->next);
+	opensles_queue_element_free(p->prep);
+	openSLDestroyEngine(p);
+	free(p);
+}
+
+// this callback handler is called every time a buffer finishes recording
+static void bqRecorderCallback(SLAndroidSimpleBufferQueueItf bq, void* context)
+{
+	OPENSL_STREAM* p = (OPENSL_STREAM*)context;
+	queue_element* e;
+
+	if (!p)
+		return;
+
+	e = p->next;
+
+	if (!e)
+		return;
+
+	if (!p->context || !p->receive)
+		WLog_WARN(TAG, "Missing receive callback=%p, context=%p", p->receive, p->context);
+	else
+		p->receive(p->context, e->data, e->size);
+
+	p->next = p->prep;
+	p->prep = e;
+	(*p->recorderBufferQueue)->Enqueue(p->recorderBufferQueue, e->data, e->size);
+}

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/opensles/opensl_io.h

@@ -0,0 +1,65 @@
+/*
+opensl_io.c:
+Android OpenSL input/output module header
+Copyright (c) 2012, Victor Lazzarini
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the <organization> nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef FREERDP_CHANNEL_AUDIN_CLIENT_OPENSL_IO_H
+#define FREERDP_CHANNEL_AUDIN_CLIENT_OPENSL_IO_H
+
+#include <SLES/OpenSLES.h>
+#include <SLES/OpenSLES_Android.h>
+
+#include <freerdp/api.h>
+
+#include <stdlib.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+	typedef struct opensl_stream OPENSL_STREAM;
+
+	typedef void (*opensl_receive_t)(void* context, const void* data, size_t size);
+
+	/*
+	Open the audio device with a given sampling rate (sr), input and output channels and IO buffer
+	size in frames. Returns a handle to the OpenSL stream
+	*/
+	FREERDP_LOCAL OPENSL_STREAM* android_OpenRecDevice(void* context, opensl_receive_t receive,
+	                                                   int sr, int inchannels, int bufferframes,
+	                                                   int bits_per_sample);
+	/*
+	Close the audio device
+	*/
+	FREERDP_LOCAL void android_CloseRecDevice(OPENSL_STREAM* p);
+
+#ifdef __cplusplus
+};
+#endif
+
+#endif /* FREERDP_CHANNEL_AUDIN_CLIENT_OPENSL_IO_H */

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/oss/CMakeLists.txt

@@ -0,0 +1,31 @@
+# FreeRDP: A Remote Desktop Protocol Implementation
+# FreeRDP cmake build script
+#
+# Copyright (c) 2015 Rozhuk Ivan <rozhuk.im@gmail.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+define_channel_client_subsystem("audin" "oss" "")
+
+find_package(OSS REQUIRED)
+
+set(${MODULE_PREFIX}_SRCS audin_oss.c)
+
+set(${MODULE_PREFIX}_LIBS winpr freerdp ${OSS_LIBRARIES})
+
+include_directories(..)
+include_directories(${CMAKE_CURRENT_BINARY_DIR})
+include_directories(SYSTEM ${OSS_INCLUDE_DIRS})
+cleaning_configure_file(${CMAKE_SOURCE_DIR}/cmake/oss-includes.h.in ${CMAKE_CURRENT_BINARY_DIR}/oss-includes.h @ONLY)
+
+add_channel_client_subsystem_library(${MODULE_PREFIX} ${MODULE_NAME} ${CHANNEL_NAME} "" TRUE "")

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/oss/audin_oss.c

@@ -0,0 +1,486 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Audio Input Redirection Virtual Channel - OSS implementation
+ *
+ * Copyright (c) 2015 Rozhuk Ivan <rozhuk.im@gmail.com>
+ * Copyright 2015 Thincast Technologies GmbH
+ * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <winpr/crt.h>
+#include <winpr/synch.h>
+#include <winpr/string.h>
+#include <winpr/thread.h>
+#include <winpr/cmdline.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <libgen.h>
+#include <limits.h>
+#include <unistd.h>
+#include <oss-includes.h>
+#include <sys/ioctl.h>
+
+#include <freerdp/freerdp.h>
+#include <freerdp/addin.h>
+#include <freerdp/channels/rdpsnd.h>
+
+#include "audin_main.h"
+
+typedef struct
+{
+	IAudinDevice iface;
+
+	HANDLE thread;
+	HANDLE stopEvent;
+
+	AUDIO_FORMAT format;
+	UINT32 FramesPerPacket;
+	int dev_unit;
+
+	AudinReceive receive;
+	void* user_data;
+
+	rdpContext* rdpcontext;
+} AudinOSSDevice;
+
+static void OSS_LOG_ERR(const char* _text, int _error)
+{
+	if ((_error) != 0)
+	{
+		char buffer[256] = { 0 };
+		WLog_ERR(TAG, "%s: %i - %s\n", (_text), (_error),
+		         winpr_strerror((_error), buffer, sizeof(buffer)));
+	}
+}
+
+static UINT32 audin_oss_get_format(const AUDIO_FORMAT* format)
+{
+	switch (format->wFormatTag)
+	{
+		case WAVE_FORMAT_PCM:
+			switch (format->wBitsPerSample)
+			{
+				case 8:
+					return AFMT_S8;
+
+				case 16:
+					return AFMT_S16_LE;
+
+				default:
+					break;
+			}
+
+			break;
+		default:
+			break;
+	}
+
+	return 0;
+}
+
+static BOOL audin_oss_format_supported(IAudinDevice* device, const AUDIO_FORMAT* format)
+{
+	if (device == NULL || format == NULL)
+		return FALSE;
+
+	switch (format->wFormatTag)
+	{
+		case WAVE_FORMAT_PCM:
+			if (format->cbSize != 0 || format->nSamplesPerSec > 48000 ||
+			    (format->wBitsPerSample != 8 && format->wBitsPerSample != 16) ||
+			    (format->nChannels != 1 && format->nChannels != 2))
+				return FALSE;
+
+			break;
+
+		default:
+			return FALSE;
+	}
+
+	return TRUE;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_oss_set_format(IAudinDevice* device, const AUDIO_FORMAT* format,
+                                 UINT32 FramesPerPacket)
+{
+	AudinOSSDevice* oss = (AudinOSSDevice*)device;
+
+	if (device == NULL || format == NULL)
+		return ERROR_INVALID_PARAMETER;
+
+	oss->FramesPerPacket = FramesPerPacket;
+	oss->format = *format;
+	return CHANNEL_RC_OK;
+}
+
+static DWORD WINAPI audin_oss_thread_func(LPVOID arg)
+{
+	char dev_name[PATH_MAX] = "/dev/dsp";
+	char mixer_name[PATH_MAX] = "/dev/mixer";
+	int pcm_handle = -1;
+	int mixer_handle = 0;
+	BYTE* buffer = NULL;
+	unsigned long tmp = 0;
+	size_t buffer_size = 0;
+	AudinOSSDevice* oss = (AudinOSSDevice*)arg;
+	UINT error = 0;
+	DWORD status = 0;
+
+	if (oss == NULL)
+	{
+		error = ERROR_INVALID_PARAMETER;
+		goto err_out;
+	}
+
+	if (oss->dev_unit != -1)
+	{
+		(void)sprintf_s(dev_name, (PATH_MAX - 1), "/dev/dsp%i", oss->dev_unit);
+		(void)sprintf_s(mixer_name, PATH_MAX - 1, "/dev/mixer%i", oss->dev_unit);
+	}
+
+	WLog_INFO(TAG, "open: %s", dev_name);
+
+	if ((pcm_handle = open(dev_name, O_RDONLY)) < 0)
+	{
+		OSS_LOG_ERR("sound dev open failed", errno);
+		error = ERROR_INTERNAL_ERROR;
+		goto err_out;
+	}
+
+	/* Set rec volume to 100%. */
+	if ((mixer_handle = open(mixer_name, O_RDWR)) < 0)
+	{
+		OSS_LOG_ERR("mixer open failed, not critical", errno);
+	}
+	else
+	{
+		tmp = (100 | (100 << 8));
+
+		if (ioctl(mixer_handle, MIXER_WRITE(SOUND_MIXER_MIC), &tmp) == -1)
+			OSS_LOG_ERR("WRITE_MIXER - SOUND_MIXER_MIC, not critical", errno);
+
+		tmp = (100 | (100 << 8));
+
+		if (ioctl(mixer_handle, MIXER_WRITE(SOUND_MIXER_RECLEV), &tmp) == -1)
+			OSS_LOG_ERR("WRITE_MIXER - SOUND_MIXER_RECLEV, not critical", errno);
+
+		close(mixer_handle);
+	}
+
+#if 0 /* FreeBSD OSS implementation at this moment (2015.03) does not set PCM_CAP_INPUT flag. */
+	tmp = 0;
+
+	if (ioctl(pcm_handle, SNDCTL_DSP_GETCAPS, &tmp) == -1)
+	{
+		OSS_LOG_ERR("SNDCTL_DSP_GETCAPS failed, try ignored", errno);
+	}
+	else if ((tmp & PCM_CAP_INPUT) == 0)
+	{
+		OSS_LOG_ERR("Device does not supports playback", EOPNOTSUPP);
+		goto err_out;
+	}
+
+#endif
+	/* Set format. */
+	tmp = audin_oss_get_format(&oss->format);
+
+	if (ioctl(pcm_handle, SNDCTL_DSP_SETFMT, &tmp) == -1)
+		OSS_LOG_ERR("SNDCTL_DSP_SETFMT failed", errno);
+
+	tmp = oss->format.nChannels;
+
+	if (ioctl(pcm_handle, SNDCTL_DSP_CHANNELS, &tmp) == -1)
+		OSS_LOG_ERR("SNDCTL_DSP_CHANNELS failed", errno);
+
+	tmp = oss->format.nSamplesPerSec;
+
+	if (ioctl(pcm_handle, SNDCTL_DSP_SPEED, &tmp) == -1)
+		OSS_LOG_ERR("SNDCTL_DSP_SPEED failed", errno);
+
+	tmp = oss->format.nBlockAlign;
+
+	if (ioctl(pcm_handle, SNDCTL_DSP_SETFRAGMENT, &tmp) == -1)
+		OSS_LOG_ERR("SNDCTL_DSP_SETFRAGMENT failed", errno);
+
+	buffer_size =
+	    (1ull * oss->FramesPerPacket * oss->format.nChannels * (oss->format.wBitsPerSample / 8ull));
+	buffer = (BYTE*)calloc((buffer_size + sizeof(void*)), sizeof(BYTE));
+
+	if (NULL == buffer)
+	{
+		OSS_LOG_ERR("malloc() fail", errno);
+		error = ERROR_NOT_ENOUGH_MEMORY;
+		goto err_out;
+	}
+
+	while (1)
+	{
+		SSIZE_T stmp = -1;
+		status = WaitForSingleObject(oss->stopEvent, 0);
+
+		if (status == WAIT_FAILED)
+		{
+			error = GetLastError();
+			WLog_ERR(TAG, "WaitForSingleObject failed with error %" PRIu32 "", error);
+			goto err_out;
+		}
+
+		if (status == WAIT_OBJECT_0)
+			break;
+
+		stmp = read(pcm_handle, buffer, buffer_size);
+
+		/* Error happen. */
+		if (stmp < 0)
+		{
+			OSS_LOG_ERR("read() error", errno);
+			continue;
+		}
+
+		if ((size_t)stmp < buffer_size) /* Not enough data. */
+			continue;
+
+		if ((error = oss->receive(&oss->format, buffer, buffer_size, oss->user_data)))
+		{
+			WLog_ERR(TAG, "oss->receive failed with error %" PRIu32 "", error);
+			break;
+		}
+	}
+
+err_out:
+
+	if (error && oss && oss->rdpcontext)
+		setChannelError(oss->rdpcontext, error, "audin_oss_thread_func reported an error");
+
+	if (pcm_handle != -1)
+	{
+		WLog_INFO(TAG, "close: %s", dev_name);
+		close(pcm_handle);
+	}
+
+	free(buffer);
+	ExitThread(error);
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_oss_open(IAudinDevice* device, AudinReceive receive, void* user_data)
+{
+	AudinOSSDevice* oss = (AudinOSSDevice*)device;
+	oss->receive = receive;
+	oss->user_data = user_data;
+
+	if (!(oss->stopEvent = CreateEvent(NULL, TRUE, FALSE, NULL)))
+	{
+		WLog_ERR(TAG, "CreateEvent failed!");
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	if (!(oss->thread = CreateThread(NULL, 0, audin_oss_thread_func, oss, 0, NULL)))
+	{
+		WLog_ERR(TAG, "CreateThread failed!");
+		(void)CloseHandle(oss->stopEvent);
+		oss->stopEvent = NULL;
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_oss_close(IAudinDevice* device)
+{
+	UINT error = 0;
+	AudinOSSDevice* oss = (AudinOSSDevice*)device;
+
+	if (device == NULL)
+		return ERROR_INVALID_PARAMETER;
+
+	if (oss->stopEvent != NULL)
+	{
+		(void)SetEvent(oss->stopEvent);
+
+		if (WaitForSingleObject(oss->thread, INFINITE) == WAIT_FAILED)
+		{
+			error = GetLastError();
+			WLog_ERR(TAG, "WaitForSingleObject failed with error %" PRIu32 "", error);
+			return error;
+		}
+
+		(void)CloseHandle(oss->stopEvent);
+		oss->stopEvent = NULL;
+		(void)CloseHandle(oss->thread);
+		oss->thread = NULL;
+	}
+
+	oss->receive = NULL;
+	oss->user_data = NULL;
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_oss_free(IAudinDevice* device)
+{
+	AudinOSSDevice* oss = (AudinOSSDevice*)device;
+	UINT error = 0;
+
+	if (device == NULL)
+		return ERROR_INVALID_PARAMETER;
+
+	if ((error = audin_oss_close(device)))
+	{
+		WLog_ERR(TAG, "audin_oss_close failed with error code %" PRIu32 "!", error);
+	}
+
+	free(oss);
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_oss_parse_addin_args(AudinOSSDevice* device, const ADDIN_ARGV* args)
+{
+	int status = 0;
+	char* str_num = NULL;
+	char* eptr = NULL;
+	DWORD flags = 0;
+	const COMMAND_LINE_ARGUMENT_A* arg = NULL;
+	AudinOSSDevice* oss = device;
+	COMMAND_LINE_ARGUMENT_A audin_oss_args[] = { { "dev", COMMAND_LINE_VALUE_REQUIRED, "<device>",
+		                                           NULL, NULL, -1, NULL, "audio device name" },
+		                                         { NULL, 0, NULL, NULL, NULL, -1, NULL, NULL } };
+
+	flags =
+	    COMMAND_LINE_SIGIL_NONE | COMMAND_LINE_SEPARATOR_COLON | COMMAND_LINE_IGN_UNKNOWN_KEYWORD;
+	status =
+	    CommandLineParseArgumentsA(args->argc, args->argv, audin_oss_args, flags, oss, NULL, NULL);
+
+	if (status < 0)
+		return ERROR_INVALID_PARAMETER;
+
+	arg = audin_oss_args;
+	errno = 0;
+
+	do
+	{
+		if (!(arg->Flags & COMMAND_LINE_VALUE_PRESENT))
+			continue;
+
+		CommandLineSwitchStart(arg) CommandLineSwitchCase(arg, "dev")
+		{
+			str_num = _strdup(arg->Value);
+
+			if (!str_num)
+			{
+				WLog_ERR(TAG, "_strdup failed!");
+				return CHANNEL_RC_NO_MEMORY;
+			}
+
+			{
+				long val = strtol(str_num, &eptr, 10);
+
+				if ((errno != 0) || (val < INT32_MIN) || (val > INT32_MAX))
+				{
+					free(str_num);
+					return CHANNEL_RC_NULL_DATA;
+				}
+
+				oss->dev_unit = (INT32)val;
+			}
+
+			if (oss->dev_unit < 0 || *eptr != '\0')
+				oss->dev_unit = -1;
+
+			free(str_num);
+		}
+		CommandLineSwitchEnd(arg)
+	} while ((arg = CommandLineFindNextArgumentA(arg)) != NULL);
+
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+FREERDP_ENTRY_POINT(UINT VCAPITYPE oss_freerdp_audin_client_subsystem_entry(
+    PFREERDP_AUDIN_DEVICE_ENTRY_POINTS pEntryPoints))
+{
+	const ADDIN_ARGV* args = NULL;
+	AudinOSSDevice* oss = NULL;
+	UINT error = 0;
+	oss = (AudinOSSDevice*)calloc(1, sizeof(AudinOSSDevice));
+
+	if (!oss)
+	{
+		WLog_ERR(TAG, "calloc failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	oss->iface.Open = audin_oss_open;
+	oss->iface.FormatSupported = audin_oss_format_supported;
+	oss->iface.SetFormat = audin_oss_set_format;
+	oss->iface.Close = audin_oss_close;
+	oss->iface.Free = audin_oss_free;
+	oss->rdpcontext = pEntryPoints->rdpcontext;
+	oss->dev_unit = -1;
+	args = pEntryPoints->args;
+
+	if ((error = audin_oss_parse_addin_args(oss, args)))
+	{
+		WLog_ERR(TAG, "audin_oss_parse_addin_args failed with errorcode %" PRIu32 "!", error);
+		goto error_out;
+	}
+
+	if ((error = pEntryPoints->pRegisterAudinDevice(pEntryPoints->plugin, (IAudinDevice*)oss)))
+	{
+		WLog_ERR(TAG, "RegisterAudinDevice failed with error %" PRIu32 "!", error);
+		goto error_out;
+	}
+
+	return CHANNEL_RC_OK;
+error_out:
+	free(oss);
+	return error;
+}

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/pulse/CMakeLists.txt

@@ -0,0 +1,29 @@
+# FreeRDP: A Remote Desktop Protocol Implementation
+# FreeRDP cmake build script
+#
+# Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+define_channel_client_subsystem("audin" "pulse" "")
+
+find_package(PulseAudio REQUIRED)
+
+set(${MODULE_PREFIX}_SRCS audin_pulse.c)
+
+set(${MODULE_PREFIX}_LIBS winpr freerdp ${PULSEAUDIO_LIBRARY} ${PULSEAUDIO_MAINLOOP_LIBRARY})
+
+include_directories(..)
+include_directories(SYSTEM ${PULSEAUDIO_INCLUDE_DIR})
+
+add_channel_client_subsystem_library(${MODULE_PREFIX} ${MODULE_NAME} ${CHANNEL_NAME} "" TRUE "")

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/pulse/audin_pulse.c

@@ -0,0 +1,561 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Audio Input Redirection Virtual Channel - PulseAudio implementation
+ *
+ * Copyright 2010-2011 Vic Lee
+ * Copyright 2015 Thincast Technologies GmbH
+ * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <winpr/crt.h>
+#include <winpr/cmdline.h>
+#include <winpr/wlog.h>
+#include <winpr/cast.h>
+
+#include <pulse/pulseaudio.h>
+
+#include <freerdp/types.h>
+#include <freerdp/addin.h>
+#include <freerdp/freerdp.h>
+#include <freerdp/codec/audio.h>
+#include <freerdp/client/audin.h>
+
+#include "audin_main.h"
+
+typedef struct
+{
+	IAudinDevice iface;
+
+	char* device_name;
+	UINT32 frames_per_packet;
+	pa_threaded_mainloop* mainloop;
+	pa_context* context;
+	pa_sample_spec sample_spec;
+	pa_stream* stream;
+	AUDIO_FORMAT format;
+
+	size_t bytes_per_frame;
+	size_t buffer_frames;
+
+	AudinReceive receive;
+	void* user_data;
+
+	rdpContext* rdpcontext;
+	wLog* log;
+} AudinPulseDevice;
+
+static const char* pulse_context_state_string(pa_context_state_t state)
+{
+	switch (state)
+	{
+		case PA_CONTEXT_UNCONNECTED:
+			return "PA_CONTEXT_UNCONNECTED";
+		case PA_CONTEXT_CONNECTING:
+			return "PA_CONTEXT_CONNECTING";
+		case PA_CONTEXT_AUTHORIZING:
+			return "PA_CONTEXT_AUTHORIZING";
+		case PA_CONTEXT_SETTING_NAME:
+			return "PA_CONTEXT_SETTING_NAME";
+		case PA_CONTEXT_READY:
+			return "PA_CONTEXT_READY";
+		case PA_CONTEXT_FAILED:
+			return "PA_CONTEXT_FAILED";
+		case PA_CONTEXT_TERMINATED:
+			return "PA_CONTEXT_TERMINATED";
+		default:
+			return "UNKNOWN";
+	}
+}
+
+static const char* pulse_stream_state_string(pa_stream_state_t state)
+{
+	switch (state)
+	{
+		case PA_STREAM_UNCONNECTED:
+			return "PA_STREAM_UNCONNECTED";
+		case PA_STREAM_CREATING:
+			return "PA_STREAM_CREATING";
+		case PA_STREAM_READY:
+			return "PA_STREAM_READY";
+		case PA_STREAM_FAILED:
+			return "PA_STREAM_FAILED";
+		case PA_STREAM_TERMINATED:
+			return "PA_STREAM_TERMINATED";
+		default:
+			return "UNKNOWN";
+	}
+}
+
+static void audin_pulse_context_state_callback(pa_context* context, void* userdata)
+{
+	AudinPulseDevice* pulse = (AudinPulseDevice*)userdata;
+	pa_context_state_t state = pa_context_get_state(context);
+
+	WLog_Print(pulse->log, WLOG_DEBUG, "context state %s", pulse_context_state_string(state));
+	switch (state)
+	{
+		case PA_CONTEXT_READY:
+		case PA_CONTEXT_FAILED:
+		case PA_CONTEXT_TERMINATED:
+			pa_threaded_mainloop_signal(pulse->mainloop, 0);
+			break;
+
+		default:
+			break;
+	}
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_pulse_connect(IAudinDevice* device)
+{
+	pa_context_state_t state = PA_CONTEXT_FAILED;
+	AudinPulseDevice* pulse = (AudinPulseDevice*)device;
+
+	if (!pulse->context)
+		return ERROR_INVALID_PARAMETER;
+
+	if (pa_context_connect(pulse->context, NULL, 0, NULL))
+	{
+		WLog_Print(pulse->log, WLOG_ERROR, "pa_context_connect failed (%d)",
+		           pa_context_errno(pulse->context));
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	pa_threaded_mainloop_lock(pulse->mainloop);
+
+	if (pa_threaded_mainloop_start(pulse->mainloop) < 0)
+	{
+		pa_threaded_mainloop_unlock(pulse->mainloop);
+		WLog_Print(pulse->log, WLOG_ERROR, "pa_threaded_mainloop_start failed (%d)",
+		           pa_context_errno(pulse->context));
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	for (;;)
+	{
+		state = pa_context_get_state(pulse->context);
+
+		if (state == PA_CONTEXT_READY)
+			break;
+
+		if (!PA_CONTEXT_IS_GOOD(state))
+		{
+			WLog_Print(pulse->log, WLOG_ERROR, "bad context state (%s: %d)",
+			           pulse_context_state_string(state), pa_context_errno(pulse->context));
+			pa_context_disconnect(pulse->context);
+			return ERROR_INVALID_STATE;
+		}
+
+		pa_threaded_mainloop_wait(pulse->mainloop);
+	}
+
+	pa_threaded_mainloop_unlock(pulse->mainloop);
+	WLog_Print(pulse->log, WLOG_DEBUG, "connected");
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_pulse_free(IAudinDevice* device)
+{
+	AudinPulseDevice* pulse = (AudinPulseDevice*)device;
+
+	if (!pulse)
+		return ERROR_INVALID_PARAMETER;
+
+	if (pulse->mainloop)
+	{
+		pa_threaded_mainloop_stop(pulse->mainloop);
+	}
+
+	if (pulse->context)
+	{
+		pa_context_disconnect(pulse->context);
+		pa_context_unref(pulse->context);
+		pulse->context = NULL;
+	}
+
+	if (pulse->mainloop)
+	{
+		pa_threaded_mainloop_free(pulse->mainloop);
+		pulse->mainloop = NULL;
+	}
+
+	free(pulse);
+	return CHANNEL_RC_OK;
+}
+
+static BOOL audin_pulse_format_supported(IAudinDevice* device, const AUDIO_FORMAT* format)
+{
+	AudinPulseDevice* pulse = (AudinPulseDevice*)device;
+
+	if (!pulse || !format)
+		return FALSE;
+
+	if (!pulse->context)
+		return 0;
+
+	switch (format->wFormatTag)
+	{
+		case WAVE_FORMAT_PCM:
+			if (format->cbSize == 0 && (format->nSamplesPerSec <= PA_RATE_MAX) &&
+			    (format->wBitsPerSample == 8 || format->wBitsPerSample == 16) &&
+			    (format->nChannels >= 1 && format->nChannels <= PA_CHANNELS_MAX))
+			{
+				return TRUE;
+			}
+
+			break;
+
+		default:
+			return FALSE;
+	}
+
+	return FALSE;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_pulse_set_format(IAudinDevice* device, const AUDIO_FORMAT* format,
+                                   UINT32 FramesPerPacket)
+{
+	pa_sample_spec sample_spec = { 0 };
+	AudinPulseDevice* pulse = (AudinPulseDevice*)device;
+
+	if (!pulse || !format)
+		return ERROR_INVALID_PARAMETER;
+
+	if (!pulse->context)
+		return ERROR_INVALID_PARAMETER;
+
+	if (FramesPerPacket > 0)
+		pulse->frames_per_packet = FramesPerPacket;
+
+	sample_spec.rate = format->nSamplesPerSec;
+
+	sample_spec.channels = WINPR_ASSERTING_INT_CAST(uint8_t, format->nChannels);
+
+	switch (format->wFormatTag)
+	{
+		case WAVE_FORMAT_PCM: /* PCM */
+			switch (format->wBitsPerSample)
+			{
+				case 8:
+					sample_spec.format = PA_SAMPLE_U8;
+					break;
+
+				case 16:
+					sample_spec.format = PA_SAMPLE_S16LE;
+					break;
+
+				default:
+					return ERROR_INTERNAL_ERROR;
+			}
+
+			break;
+
+		default:
+			return ERROR_INTERNAL_ERROR;
+	}
+
+	pulse->sample_spec = sample_spec;
+	pulse->format = *format;
+	return CHANNEL_RC_OK;
+}
+
+static void audin_pulse_stream_state_callback(pa_stream* stream, void* userdata)
+{
+	AudinPulseDevice* pulse = (AudinPulseDevice*)userdata;
+	WINPR_ASSERT(pulse);
+
+	pa_stream_state_t state = pa_stream_get_state(stream);
+
+	WLog_Print(pulse->log, WLOG_DEBUG, "stream state %s", pulse_stream_state_string(state));
+	switch (state)
+	{
+		case PA_STREAM_READY:
+		case PA_STREAM_FAILED:
+		case PA_STREAM_TERMINATED:
+			pa_threaded_mainloop_signal(pulse->mainloop, 0);
+			break;
+
+		case PA_STREAM_UNCONNECTED:
+		case PA_STREAM_CREATING:
+		default:
+			break;
+	}
+}
+
+static void audin_pulse_stream_request_callback(pa_stream* stream, size_t length, void* userdata)
+{
+	const void* data = NULL;
+	AudinPulseDevice* pulse = (AudinPulseDevice*)userdata;
+	UINT error = CHANNEL_RC_OK;
+	pa_stream_peek(stream, &data, &length);
+	error =
+	    IFCALLRESULT(CHANNEL_RC_OK, pulse->receive, &pulse->format, data, length, pulse->user_data);
+	pa_stream_drop(stream);
+
+	if (error && pulse->rdpcontext)
+		setChannelError(pulse->rdpcontext, error, "audin_pulse_thread_func reported an error");
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_pulse_close(IAudinDevice* device)
+{
+	AudinPulseDevice* pulse = (AudinPulseDevice*)device;
+
+	if (!pulse)
+		return ERROR_INVALID_PARAMETER;
+
+	if (pulse->stream)
+	{
+		pa_threaded_mainloop_lock(pulse->mainloop);
+		pa_stream_disconnect(pulse->stream);
+		pa_stream_unref(pulse->stream);
+		pulse->stream = NULL;
+		pa_threaded_mainloop_unlock(pulse->mainloop);
+	}
+
+	pulse->receive = NULL;
+	pulse->user_data = NULL;
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_pulse_open(IAudinDevice* device, AudinReceive receive, void* user_data)
+{
+	pa_stream_state_t state = PA_STREAM_FAILED;
+	pa_buffer_attr buffer_attr = { 0 };
+	AudinPulseDevice* pulse = (AudinPulseDevice*)device;
+
+	if (!pulse || !receive || !user_data)
+		return ERROR_INVALID_PARAMETER;
+
+	if (!pulse->context)
+		return ERROR_INVALID_PARAMETER;
+
+	if (!pulse->sample_spec.rate || pulse->stream)
+		return ERROR_INVALID_PARAMETER;
+
+	pulse->receive = receive;
+	pulse->user_data = user_data;
+	pa_threaded_mainloop_lock(pulse->mainloop);
+	pulse->stream = pa_stream_new(pulse->context, "freerdp_audin", &pulse->sample_spec, NULL);
+
+	if (!pulse->stream)
+	{
+		pa_threaded_mainloop_unlock(pulse->mainloop);
+		WLog_Print(pulse->log, WLOG_DEBUG, "pa_stream_new failed (%d)",
+		           pa_context_errno(pulse->context));
+		const int rc = pa_context_errno(pulse->context);
+		return (UINT)rc;
+	}
+
+	pulse->bytes_per_frame = pa_frame_size(&pulse->sample_spec);
+	pa_stream_set_state_callback(pulse->stream, audin_pulse_stream_state_callback, pulse);
+	pa_stream_set_read_callback(pulse->stream, audin_pulse_stream_request_callback, pulse);
+	buffer_attr.maxlength = (UINT32)-1;
+	buffer_attr.tlength = (UINT32)-1;
+	buffer_attr.prebuf = (UINT32)-1;
+	buffer_attr.minreq = (UINT32)-1;
+	/* 500ms latency */
+	const size_t frag = pulse->bytes_per_frame * pulse->frames_per_packet;
+	WINPR_ASSERT(frag <= UINT32_MAX);
+	buffer_attr.fragsize = (uint32_t)frag;
+
+	if (buffer_attr.fragsize % pulse->format.nBlockAlign)
+		buffer_attr.fragsize +=
+		    pulse->format.nBlockAlign - buffer_attr.fragsize % pulse->format.nBlockAlign;
+
+	if (pa_stream_connect_record(pulse->stream, pulse->device_name, &buffer_attr,
+	                             PA_STREAM_ADJUST_LATENCY) < 0)
+	{
+		pa_threaded_mainloop_unlock(pulse->mainloop);
+		WLog_Print(pulse->log, WLOG_ERROR, "pa_stream_connect_playback failed (%d)",
+		           pa_context_errno(pulse->context));
+		const int rc = pa_context_errno(pulse->context);
+		return (UINT)rc;
+	}
+
+	while (pulse->stream)
+	{
+		state = pa_stream_get_state(pulse->stream);
+
+		if (state == PA_STREAM_READY)
+			break;
+
+		if (!PA_STREAM_IS_GOOD(state))
+		{
+			audin_pulse_close(device);
+			WLog_Print(pulse->log, WLOG_ERROR, "bad stream state (%s: %d)",
+			           pulse_stream_state_string(state), pa_context_errno(pulse->context));
+			pa_threaded_mainloop_unlock(pulse->mainloop);
+			const int rc = pa_context_errno(pulse->context);
+			return (UINT)rc;
+		}
+
+		pa_threaded_mainloop_wait(pulse->mainloop);
+	}
+
+	pa_threaded_mainloop_unlock(pulse->mainloop);
+	pulse->buffer_frames = 0;
+	WLog_Print(pulse->log, WLOG_DEBUG, "connected");
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_pulse_parse_addin_args(AudinPulseDevice* device, const ADDIN_ARGV* args)
+{
+	int status = 0;
+	DWORD flags = 0;
+	const COMMAND_LINE_ARGUMENT_A* arg = NULL;
+	AudinPulseDevice* pulse = device;
+	COMMAND_LINE_ARGUMENT_A audin_pulse_args[] = { { "dev", COMMAND_LINE_VALUE_REQUIRED, "<device>",
+		                                             NULL, NULL, -1, NULL, "audio device name" },
+		                                           { NULL, 0, NULL, NULL, NULL, -1, NULL, NULL } };
+
+	flags =
+	    COMMAND_LINE_SIGIL_NONE | COMMAND_LINE_SEPARATOR_COLON | COMMAND_LINE_IGN_UNKNOWN_KEYWORD;
+	status = CommandLineParseArgumentsA(args->argc, args->argv, audin_pulse_args, flags, pulse,
+	                                    NULL, NULL);
+
+	if (status < 0)
+		return ERROR_INVALID_PARAMETER;
+
+	arg = audin_pulse_args;
+
+	do
+	{
+		if (!(arg->Flags & COMMAND_LINE_VALUE_PRESENT))
+			continue;
+
+		CommandLineSwitchStart(arg) CommandLineSwitchCase(arg, "dev")
+		{
+			pulse->device_name = _strdup(arg->Value);
+
+			if (!pulse->device_name)
+			{
+				WLog_Print(pulse->log, WLOG_ERROR, "_strdup failed!");
+				return CHANNEL_RC_NO_MEMORY;
+			}
+		}
+		CommandLineSwitchEnd(arg)
+	} while ((arg = CommandLineFindNextArgumentA(arg)) != NULL);
+
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+FREERDP_ENTRY_POINT(UINT VCAPITYPE pulse_freerdp_audin_client_subsystem_entry(
+    PFREERDP_AUDIN_DEVICE_ENTRY_POINTS pEntryPoints))
+{
+	const ADDIN_ARGV* args = NULL;
+	AudinPulseDevice* pulse = NULL;
+	UINT error = 0;
+	pulse = (AudinPulseDevice*)calloc(1, sizeof(AudinPulseDevice));
+
+	if (!pulse)
+	{
+		WLog_ERR(TAG, "calloc failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	pulse->log = WLog_Get(TAG);
+	pulse->iface.Open = audin_pulse_open;
+	pulse->iface.FormatSupported = audin_pulse_format_supported;
+	pulse->iface.SetFormat = audin_pulse_set_format;
+	pulse->iface.Close = audin_pulse_close;
+	pulse->iface.Free = audin_pulse_free;
+	pulse->rdpcontext = pEntryPoints->rdpcontext;
+	args = pEntryPoints->args;
+
+	if ((error = audin_pulse_parse_addin_args(pulse, args)))
+	{
+		WLog_Print(pulse->log, WLOG_ERROR,
+		           "audin_pulse_parse_addin_args failed with error %" PRIu32 "!", error);
+		goto error_out;
+	}
+
+	pulse->mainloop = pa_threaded_mainloop_new();
+
+	if (!pulse->mainloop)
+	{
+		WLog_Print(pulse->log, WLOG_ERROR, "pa_threaded_mainloop_new failed");
+		error = CHANNEL_RC_NO_MEMORY;
+		goto error_out;
+	}
+
+	pulse->context = pa_context_new(pa_threaded_mainloop_get_api(pulse->mainloop), "freerdp");
+
+	if (!pulse->context)
+	{
+		WLog_Print(pulse->log, WLOG_ERROR, "pa_context_new failed");
+		error = CHANNEL_RC_NO_MEMORY;
+		goto error_out;
+	}
+
+	pa_context_set_state_callback(pulse->context, audin_pulse_context_state_callback, pulse);
+
+	if ((error = audin_pulse_connect(&pulse->iface)))
+	{
+		WLog_Print(pulse->log, WLOG_ERROR, "audin_pulse_connect failed");
+		goto error_out;
+	}
+
+	if ((error = pEntryPoints->pRegisterAudinDevice(pEntryPoints->plugin, &pulse->iface)))
+	{
+		WLog_Print(pulse->log, WLOG_ERROR, "RegisterAudinDevice failed with error %" PRIu32 "!",
+		           error);
+		goto error_out;
+	}
+
+	return CHANNEL_RC_OK;
+error_out:
+	audin_pulse_free(&pulse->iface);
+	return error;
+}

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/sndio/CMakeLists.txt

@@ -0,0 +1,30 @@
+# FreeRDP: A Remote Desktop Protocol Implementation
+# FreeRDP cmake build script
+#
+# Copyright (c) 2015 Rozhuk Ivan <rozhuk.im@gmail.com>
+# Copyright (c) 2020 Ingo Feinerer <feinerer@logic.at>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+define_channel_client_subsystem("audin" "sndio" "")
+
+find_package(SNDIO REQUIRED)
+
+set(${MODULE_PREFIX}_SRCS audin_sndio.c)
+
+set(${MODULE_PREFIX}_LIBS winpr freerdp ${SNDIO_LIBRARIES})
+
+include_directories(..)
+include_directories(SYSTEM ${SNDIO_INCLUDE_DIRS})
+
+add_channel_client_subsystem_library(${MODULE_PREFIX} ${MODULE_NAME} ${CHANNEL_NAME} "" TRUE "")

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/sndio/audin_sndio.c

@@ -0,0 +1,352 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Audio Input Redirection Virtual Channel - sndio implementation
+ *
+ * Copyright (c) 2015 Rozhuk Ivan <rozhuk.im@gmail.com>
+ * Copyright 2015 Thincast Technologies GmbH
+ * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
+ * Copyright 2020 Ingo Feinerer <feinerer@logic.at>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/config.h>
+
+#include <sndio.h>
+
+#include <winpr/cmdline.h>
+
+#include <freerdp/freerdp.h>
+#include <freerdp/channels/rdpsnd.h>
+
+#include "audin_main.h"
+
+typedef struct
+{
+	IAudinDevice device;
+
+	HANDLE thread;
+	HANDLE stopEvent;
+
+	AUDIO_FORMAT format;
+	UINT32 FramesPerPacket;
+
+	AudinReceive receive;
+	void* user_data;
+
+	rdpContext* rdpcontext;
+} AudinSndioDevice;
+
+static BOOL audin_sndio_format_supported(IAudinDevice* device, const AUDIO_FORMAT* format)
+{
+	if (device == NULL || format == NULL)
+		return FALSE;
+
+	return (format->wFormatTag == WAVE_FORMAT_PCM);
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_sndio_set_format(IAudinDevice* device, AUDIO_FORMAT* format,
+                                   UINT32 FramesPerPacket)
+{
+	AudinSndioDevice* sndio = (AudinSndioDevice*)device;
+
+	if (device == NULL || format == NULL)
+		return ERROR_INVALID_PARAMETER;
+
+	if (format->wFormatTag != WAVE_FORMAT_PCM)
+		return ERROR_INTERNAL_ERROR;
+
+	sndio->format = *format;
+	sndio->FramesPerPacket = FramesPerPacket;
+
+	return CHANNEL_RC_OK;
+}
+
+static void* audin_sndio_thread_func(void* arg)
+{
+	struct sio_hdl* hdl;
+	struct sio_par par;
+	BYTE* buffer = NULL;
+	size_t n, nbytes;
+	AudinSndioDevice* sndio = (AudinSndioDevice*)arg;
+	UINT error = 0;
+	DWORD status;
+
+	if (arg == NULL)
+	{
+		error = ERROR_INVALID_PARAMETER;
+		goto err_out;
+	}
+
+	hdl = sio_open(SIO_DEVANY, SIO_REC, 0);
+	if (hdl == NULL)
+	{
+		WLog_ERR(TAG, "could not open audio device");
+		error = ERROR_INTERNAL_ERROR;
+		goto err_out;
+	}
+
+	sio_initpar(&par);
+	par.bits = sndio->format.wBitsPerSample;
+	par.rchan = sndio->format.nChannels;
+	par.rate = sndio->format.nSamplesPerSec;
+	if (!sio_setpar(hdl, &par))
+	{
+		WLog_ERR(TAG, "could not set audio parameters");
+		error = ERROR_INTERNAL_ERROR;
+		goto err_out;
+	}
+	if (!sio_getpar(hdl, &par))
+	{
+		WLog_ERR(TAG, "could not get audio parameters");
+		error = ERROR_INTERNAL_ERROR;
+		goto err_out;
+	}
+
+	if (!sio_start(hdl))
+	{
+		WLog_ERR(TAG, "could not start audio device");
+		error = ERROR_INTERNAL_ERROR;
+		goto err_out;
+	}
+
+	nbytes =
+	    (sndio->FramesPerPacket * sndio->format.nChannels * (sndio->format.wBitsPerSample / 8));
+	buffer = (BYTE*)calloc((nbytes + sizeof(void*)), sizeof(BYTE));
+
+	if (buffer == NULL)
+	{
+		error = ERROR_NOT_ENOUGH_MEMORY;
+		goto err_out;
+	}
+
+	while (1)
+	{
+		status = WaitForSingleObject(sndio->stopEvent, 0);
+
+		if (status == WAIT_FAILED)
+		{
+			error = GetLastError();
+			WLog_ERR(TAG, "WaitForSingleObject failed with error %" PRIu32 "", error);
+			goto err_out;
+		}
+
+		if (status == WAIT_OBJECT_0)
+			break;
+
+		n = sio_read(hdl, buffer, nbytes);
+
+		if (n == 0)
+		{
+			WLog_ERR(TAG, "could not read");
+			continue;
+		}
+
+		if (n < nbytes)
+			continue;
+
+		if ((error = sndio->receive(&sndio->format, buffer, nbytes, sndio->user_data)))
+		{
+			WLog_ERR(TAG, "sndio->receive failed with error %" PRIu32 "", error);
+			break;
+		}
+	}
+
+err_out:
+	if (error && sndio->rdpcontext)
+		setChannelError(sndio->rdpcontext, error, "audin_sndio_thread_func reported an error");
+
+	if (hdl != NULL)
+	{
+		WLog_INFO(TAG, "sio_close");
+		sio_stop(hdl);
+		sio_close(hdl);
+	}
+
+	free(buffer);
+	ExitThread(0);
+	return NULL;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_sndio_open(IAudinDevice* device, AudinReceive receive, void* user_data)
+{
+	AudinSndioDevice* sndio = (AudinSndioDevice*)device;
+	sndio->receive = receive;
+	sndio->user_data = user_data;
+
+	if (!(sndio->stopEvent = CreateEvent(NULL, TRUE, FALSE, NULL)))
+	{
+		WLog_ERR(TAG, "CreateEvent failed");
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	if (!(sndio->thread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)audin_sndio_thread_func,
+	                                   sndio, 0, NULL)))
+	{
+		WLog_ERR(TAG, "CreateThread failed");
+		(void)CloseHandle(sndio->stopEvent);
+		sndio->stopEvent = NULL;
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_sndio_close(IAudinDevice* device)
+{
+	UINT error;
+	AudinSndioDevice* sndio = (AudinSndioDevice*)device;
+
+	if (device == NULL)
+		return ERROR_INVALID_PARAMETER;
+
+	if (sndio->stopEvent != NULL)
+	{
+		(void)SetEvent(sndio->stopEvent);
+
+		if (WaitForSingleObject(sndio->thread, INFINITE) == WAIT_FAILED)
+		{
+			error = GetLastError();
+			WLog_ERR(TAG, "WaitForSingleObject failed with error %" PRIu32 "", error);
+			return error;
+		}
+
+		(void)CloseHandle(sndio->stopEvent);
+		sndio->stopEvent = NULL;
+		(void)CloseHandle(sndio->thread);
+		sndio->thread = NULL;
+	}
+
+	sndio->receive = NULL;
+	sndio->user_data = NULL;
+
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_sndio_free(IAudinDevice* device)
+{
+	AudinSndioDevice* sndio = (AudinSndioDevice*)device;
+	int error;
+
+	if (device == NULL)
+		return ERROR_INVALID_PARAMETER;
+
+	if ((error = audin_sndio_close(device)))
+	{
+		WLog_ERR(TAG, "audin_sndio_close failed with error code %d", error);
+	}
+
+	free(sndio);
+
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_sndio_parse_addin_args(AudinSndioDevice* device, ADDIN_ARGV* args)
+{
+	int status;
+	DWORD flags;
+	COMMAND_LINE_ARGUMENT_A* arg;
+	AudinSndioDevice* sndio = (AudinSndioDevice*)device;
+	COMMAND_LINE_ARGUMENT_A audin_sndio_args[] = { { NULL, 0, NULL, NULL, NULL, -1, NULL, NULL } };
+	flags =
+	    COMMAND_LINE_SIGIL_NONE | COMMAND_LINE_SEPARATOR_COLON | COMMAND_LINE_IGN_UNKNOWN_KEYWORD;
+	status = CommandLineParseArgumentsA(args->argc, (const char**)args->argv, audin_sndio_args,
+	                                    flags, sndio, NULL, NULL);
+
+	if (status < 0)
+		return ERROR_INVALID_PARAMETER;
+
+	arg = audin_sndio_args;
+
+	do
+	{
+		if (!(arg->Flags & COMMAND_LINE_VALUE_PRESENT))
+			continue;
+
+		CommandLineSwitchStart(arg) CommandLineSwitchEnd(arg)
+	} while ((arg = CommandLineFindNextArgumentA(arg)) != NULL);
+
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+FREERDP_ENTRY_POINT(UINT VCAPITYPE sndio_freerdp_audin_client_subsystem_entry(
+    PFREERDP_AUDIN_DEVICE_ENTRY_POINTS pEntryPoints))
+{
+	ADDIN_ARGV* args;
+	AudinSndioDevice* sndio;
+	UINT ret = CHANNEL_RC_OK;
+	sndio = (AudinSndioDevice*)calloc(1, sizeof(AudinSndioDevice));
+
+	if (sndio == NULL)
+		return CHANNEL_RC_NO_MEMORY;
+
+	sndio->device.Open = audin_sndio_open;
+	sndio->device.FormatSupported = audin_sndio_format_supported;
+	sndio->device.SetFormat = audin_sndio_set_format;
+	sndio->device.Close = audin_sndio_close;
+	sndio->device.Free = audin_sndio_free;
+	sndio->rdpcontext = pEntryPoints->rdpcontext;
+	args = pEntryPoints->args;
+
+	if (args->argc > 1)
+	{
+		ret = audin_sndio_parse_addin_args(sndio, args);
+
+		if (ret != CHANNEL_RC_OK)
+		{
+			WLog_ERR(TAG, "error parsing arguments");
+			goto error;
+		}
+	}
+
+	if ((ret = pEntryPoints->pRegisterAudinDevice(pEntryPoints->plugin, (IAudinDevice*)sndio)))
+	{
+		WLog_ERR(TAG, "RegisterAudinDevice failed with error %" PRIu32 "", ret);
+		goto error;
+	}
+
+	return ret;
+error:
+	audin_sndio_free(&sndio->device);
+	return ret;
+}

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/winmm/CMakeLists.txt

@@ -0,0 +1,26 @@
+# FreeRDP: A Remote Desktop Protocol Implementation
+# FreeRDP cmake build script
+#
+# Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+define_channel_client_subsystem("audin" "winmm" "")
+
+set(${MODULE_PREFIX}_SRCS audin_winmm.c)
+
+set(${MODULE_PREFIX}_LIBS winpr freerdp winmm.lib)
+
+include_directories(..)
+
+add_channel_client_subsystem_library(${MODULE_PREFIX} ${MODULE_NAME} ${CHANNEL_NAME} "" TRUE "")

local-test-freerdp-delta-01/afc-freerdp/channels/audin/client/winmm/audin_winmm.c

@@ -0,0 +1,566 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Audio Input Redirection Virtual Channel - WinMM implementation
+ *
+ * Copyright 2013 Zhang Zhaolong <zhangzl2013@126.com>
+ * Copyright 2015 Thincast Technologies GmbH
+ * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <windows.h>
+#include <mmsystem.h>
+
+#include <winpr/crt.h>
+#include <winpr/wtsapi.h>
+#include <winpr/cmdline.h>
+#include <freerdp/freerdp.h>
+#include <freerdp/addin.h>
+#include <freerdp/client/audin.h>
+
+#include "audin_main.h"
+
+/* fix missing definitions in mingw */
+#ifndef WAVE_MAPPED_DEFAULT_COMMUNICATION_DEVICE
+#define WAVE_MAPPED_DEFAULT_COMMUNICATION_DEVICE 0x0010
+#endif
+
+typedef struct
+{
+	IAudinDevice iface;
+
+	char* device_name;
+	AudinReceive receive;
+	void* user_data;
+	HANDLE thread;
+	HANDLE stopEvent;
+	HWAVEIN hWaveIn;
+	PWAVEFORMATEX* ppwfx;
+	PWAVEFORMATEX pwfx_cur;
+	UINT32 ppwfx_size;
+	UINT32 cFormats;
+	UINT32 frames_per_packet;
+	rdpContext* rdpcontext;
+	wLog* log;
+} AudinWinmmDevice;
+
+static void CALLBACK waveInProc(HWAVEIN hWaveIn, UINT uMsg, DWORD_PTR dwInstance,
+                                DWORD_PTR dwParam1, DWORD_PTR dwParam2)
+{
+	AudinWinmmDevice* winmm = (AudinWinmmDevice*)dwInstance;
+	PWAVEHDR pWaveHdr;
+	UINT error = CHANNEL_RC_OK;
+	MMRESULT mmResult;
+
+	switch (uMsg)
+	{
+		case WIM_CLOSE:
+			break;
+
+		case WIM_DATA:
+			pWaveHdr = (WAVEHDR*)dwParam1;
+
+			if (WHDR_DONE == (WHDR_DONE & pWaveHdr->dwFlags))
+			{
+				if (pWaveHdr->dwBytesRecorded &&
+				    !(WaitForSingleObject(winmm->stopEvent, 0) == WAIT_OBJECT_0))
+				{
+					AUDIO_FORMAT format;
+					format.cbSize = winmm->pwfx_cur->cbSize;
+					format.nBlockAlign = winmm->pwfx_cur->nBlockAlign;
+					format.nAvgBytesPerSec = winmm->pwfx_cur->nAvgBytesPerSec;
+					format.nChannels = winmm->pwfx_cur->nChannels;
+					format.nSamplesPerSec = winmm->pwfx_cur->nSamplesPerSec;
+					format.wBitsPerSample = winmm->pwfx_cur->wBitsPerSample;
+					format.wFormatTag = winmm->pwfx_cur->wFormatTag;
+
+					if ((error = winmm->receive(&format, pWaveHdr->lpData,
+					                            pWaveHdr->dwBytesRecorded, winmm->user_data)))
+						break;
+
+					mmResult = waveInAddBuffer(hWaveIn, pWaveHdr, sizeof(WAVEHDR));
+
+					if (mmResult != MMSYSERR_NOERROR)
+						error = ERROR_INTERNAL_ERROR;
+				}
+			}
+
+			break;
+
+		case WIM_OPEN:
+			break;
+
+		default:
+			break;
+	}
+
+	if (error && winmm->rdpcontext)
+		setChannelError(winmm->rdpcontext, error, "waveInProc reported an error");
+}
+
+static BOOL log_mmresult(AudinWinmmDevice* winmm, const char* what, MMRESULT result)
+{
+	if (result != MMSYSERR_NOERROR)
+	{
+		CHAR buffer[8192] = { 0 };
+		CHAR msg[8192] = { 0 };
+		CHAR cmsg[8192] = { 0 };
+		waveInGetErrorTextA(result, buffer, sizeof(buffer));
+
+		_snprintf(msg, sizeof(msg) - 1, "%s failed. %" PRIu32 " [%s]", what, result, buffer);
+		_snprintf(cmsg, sizeof(cmsg) - 1, "audin_winmm_thread_func reported an error '%s'", msg);
+		WLog_Print(winmm->log, WLOG_DEBUG, "%s", msg);
+		if (winmm->rdpcontext)
+			setChannelError(winmm->rdpcontext, ERROR_INTERNAL_ERROR, cmsg);
+		return FALSE;
+	}
+	return TRUE;
+}
+
+static BOOL test_format_supported(const PWAVEFORMATEX pwfx)
+{
+	MMRESULT rc;
+	WAVEINCAPSA caps = { 0 };
+
+	rc = waveInGetDevCapsA(WAVE_MAPPER, &caps, sizeof(caps));
+	if (rc != MMSYSERR_NOERROR)
+		return FALSE;
+
+	switch (pwfx->nChannels)
+	{
+		case 1:
+			if ((caps.dwFormats &
+			     (WAVE_FORMAT_1M08 | WAVE_FORMAT_2M08 | WAVE_FORMAT_4M08 | WAVE_FORMAT_96M08 |
+			      WAVE_FORMAT_1M16 | WAVE_FORMAT_2M16 | WAVE_FORMAT_4M16 | WAVE_FORMAT_96M16)) == 0)
+				return FALSE;
+			break;
+		case 2:
+			if ((caps.dwFormats &
+			     (WAVE_FORMAT_1S08 | WAVE_FORMAT_2S08 | WAVE_FORMAT_4S08 | WAVE_FORMAT_96S08 |
+			      WAVE_FORMAT_1S16 | WAVE_FORMAT_2S16 | WAVE_FORMAT_4S16 | WAVE_FORMAT_96S16)) == 0)
+				return FALSE;
+			break;
+		default:
+			return FALSE;
+	}
+
+	rc = waveInOpen(NULL, WAVE_MAPPER, pwfx, 0, 0,
+	                WAVE_FORMAT_QUERY | WAVE_MAPPED_DEFAULT_COMMUNICATION_DEVICE);
+	return (rc == MMSYSERR_NOERROR);
+}
+
+static DWORD WINAPI audin_winmm_thread_func(LPVOID arg)
+{
+	AudinWinmmDevice* winmm = (AudinWinmmDevice*)arg;
+	char* buffer = NULL;
+	int size = 0;
+	WAVEHDR waveHdr[4] = { 0 };
+	DWORD status = 0;
+	MMRESULT rc = 0;
+
+	if (!winmm->hWaveIn)
+	{
+		rc = waveInOpen(&winmm->hWaveIn, WAVE_MAPPER, winmm->pwfx_cur, (DWORD_PTR)waveInProc,
+		                (DWORD_PTR)winmm,
+		                CALLBACK_FUNCTION | WAVE_MAPPED_DEFAULT_COMMUNICATION_DEVICE);
+		if (!log_mmresult(winmm, "waveInOpen", rc))
+			return ERROR_INTERNAL_ERROR;
+	}
+
+	size =
+	    (winmm->pwfx_cur->wBitsPerSample * winmm->pwfx_cur->nChannels * winmm->frames_per_packet +
+	     7) /
+	    8;
+
+	for (int i = 0; i < 4; i++)
+	{
+		buffer = (char*)malloc(size);
+
+		if (!buffer)
+			return CHANNEL_RC_NO_MEMORY;
+
+		waveHdr[i].dwBufferLength = size;
+		waveHdr[i].dwFlags = 0;
+		waveHdr[i].lpData = buffer;
+		rc = waveInPrepareHeader(winmm->hWaveIn, &waveHdr[i], sizeof(waveHdr[i]));
+
+		if (!log_mmresult(winmm, "waveInPrepareHeader", rc))
+		{
+		}
+
+		rc = waveInAddBuffer(winmm->hWaveIn, &waveHdr[i], sizeof(waveHdr[i]));
+
+		if (!log_mmresult(winmm, "waveInAddBuffer", rc))
+		{
+		}
+	}
+
+	rc = waveInStart(winmm->hWaveIn);
+
+	if (!log_mmresult(winmm, "waveInStart", rc))
+	{
+	}
+
+	status = WaitForSingleObject(winmm->stopEvent, INFINITE);
+
+	if (status == WAIT_FAILED)
+	{
+		WLog_Print(winmm->log, WLOG_DEBUG, "WaitForSingleObject failed.");
+
+		if (winmm->rdpcontext)
+			setChannelError(winmm->rdpcontext, ERROR_INTERNAL_ERROR,
+			                "audin_winmm_thread_func reported an error");
+	}
+
+	rc = waveInReset(winmm->hWaveIn);
+
+	if (!log_mmresult(winmm, "waveInReset", rc))
+	{
+	}
+
+	for (int i = 0; i < 4; i++)
+	{
+		rc = waveInUnprepareHeader(winmm->hWaveIn, &waveHdr[i], sizeof(waveHdr[i]));
+
+		if (!log_mmresult(winmm, "waveInUnprepareHeader", rc))
+		{
+		}
+
+		free(waveHdr[i].lpData);
+	}
+
+	rc = waveInClose(winmm->hWaveIn);
+
+	if (!log_mmresult(winmm, "waveInClose", rc))
+	{
+	}
+
+	winmm->hWaveIn = NULL;
+	return 0;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_winmm_free(IAudinDevice* device)
+{
+	AudinWinmmDevice* winmm = (AudinWinmmDevice*)device;
+
+	if (!winmm)
+		return ERROR_INVALID_PARAMETER;
+
+	for (UINT32 i = 0; i < winmm->cFormats; i++)
+	{
+		free(winmm->ppwfx[i]);
+	}
+
+	free(winmm->ppwfx);
+	free(winmm->device_name);
+	free(winmm);
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_winmm_close(IAudinDevice* device)
+{
+	DWORD status;
+	UINT error = CHANNEL_RC_OK;
+	AudinWinmmDevice* winmm = (AudinWinmmDevice*)device;
+
+	if (!winmm)
+		return ERROR_INVALID_PARAMETER;
+
+	(void)SetEvent(winmm->stopEvent);
+	status = WaitForSingleObject(winmm->thread, INFINITE);
+
+	if (status == WAIT_FAILED)
+	{
+		error = GetLastError();
+		WLog_Print(winmm->log, WLOG_ERROR, "WaitForSingleObject failed with error %" PRIu32 "!",
+		           error);
+		return error;
+	}
+
+	(void)CloseHandle(winmm->thread);
+	(void)CloseHandle(winmm->stopEvent);
+	winmm->thread = NULL;
+	winmm->stopEvent = NULL;
+	winmm->receive = NULL;
+	winmm->user_data = NULL;
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_winmm_set_format(IAudinDevice* device, const AUDIO_FORMAT* format,
+                                   UINT32 FramesPerPacket)
+{
+	AudinWinmmDevice* winmm = (AudinWinmmDevice*)device;
+
+	if (!winmm || !format)
+		return ERROR_INVALID_PARAMETER;
+
+	winmm->frames_per_packet = FramesPerPacket;
+
+	for (UINT32 i = 0; i < winmm->cFormats; i++)
+	{
+		const PWAVEFORMATEX ppwfx = winmm->ppwfx[i];
+		if ((ppwfx->wFormatTag == format->wFormatTag) && (ppwfx->nChannels == format->nChannels) &&
+		    (ppwfx->wBitsPerSample == format->wBitsPerSample) &&
+		    (ppwfx->nSamplesPerSec == format->nSamplesPerSec))
+		{
+			/* BUG: Many devices report to support stereo recording but fail here.
+			 *      Ensure we always use mono. */
+			if (ppwfx->nChannels > 1)
+			{
+				ppwfx->nChannels = 1;
+			}
+
+			if (ppwfx->nBlockAlign != 2)
+			{
+				ppwfx->nBlockAlign = 2;
+				ppwfx->nAvgBytesPerSec = ppwfx->nSamplesPerSec * ppwfx->nBlockAlign;
+			}
+
+			if (!test_format_supported(ppwfx))
+				return ERROR_INVALID_PARAMETER;
+			winmm->pwfx_cur = ppwfx;
+			return CHANNEL_RC_OK;
+		}
+	}
+
+	return ERROR_INVALID_PARAMETER;
+}
+
+static BOOL audin_winmm_format_supported(IAudinDevice* device, const AUDIO_FORMAT* format)
+{
+	AudinWinmmDevice* winmm = (AudinWinmmDevice*)device;
+	PWAVEFORMATEX pwfx;
+	BYTE* data;
+
+	if (!winmm || !format)
+		return FALSE;
+
+	if (format->wFormatTag != WAVE_FORMAT_PCM)
+		return FALSE;
+
+	if (format->nChannels != 1)
+		return FALSE;
+
+	pwfx = (PWAVEFORMATEX)malloc(sizeof(WAVEFORMATEX) + format->cbSize);
+
+	if (!pwfx)
+		return FALSE;
+
+	pwfx->cbSize = format->cbSize;
+	pwfx->wFormatTag = format->wFormatTag;
+	pwfx->nChannels = format->nChannels;
+	pwfx->nSamplesPerSec = format->nSamplesPerSec;
+	pwfx->nBlockAlign = format->nBlockAlign;
+	pwfx->wBitsPerSample = format->wBitsPerSample;
+	data = (BYTE*)pwfx + sizeof(WAVEFORMATEX);
+	memcpy(data, format->data, format->cbSize);
+
+	pwfx->nAvgBytesPerSec = pwfx->nSamplesPerSec * pwfx->nBlockAlign;
+
+	if (!test_format_supported(pwfx))
+		goto fail;
+
+	if (winmm->cFormats >= winmm->ppwfx_size)
+	{
+		PWAVEFORMATEX* tmp_ppwfx;
+		tmp_ppwfx = realloc(winmm->ppwfx, sizeof(PWAVEFORMATEX) * winmm->ppwfx_size * 2);
+
+		if (!tmp_ppwfx)
+			goto fail;
+
+		winmm->ppwfx_size *= 2;
+		winmm->ppwfx = tmp_ppwfx;
+	}
+
+	winmm->ppwfx[winmm->cFormats++] = pwfx;
+	return TRUE;
+
+fail:
+	free(pwfx);
+	return FALSE;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_winmm_open(IAudinDevice* device, AudinReceive receive, void* user_data)
+{
+	AudinWinmmDevice* winmm = (AudinWinmmDevice*)device;
+
+	if (!winmm || !receive || !user_data)
+		return ERROR_INVALID_PARAMETER;
+
+	winmm->receive = receive;
+	winmm->user_data = user_data;
+
+	if (!(winmm->stopEvent = CreateEvent(NULL, TRUE, FALSE, NULL)))
+	{
+		WLog_Print(winmm->log, WLOG_ERROR, "CreateEvent failed!");
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	if (!(winmm->thread = CreateThread(NULL, 0, audin_winmm_thread_func, winmm, 0, NULL)))
+	{
+		WLog_Print(winmm->log, WLOG_ERROR, "CreateThread failed!");
+		(void)CloseHandle(winmm->stopEvent);
+		winmm->stopEvent = NULL;
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT audin_winmm_parse_addin_args(AudinWinmmDevice* device, const ADDIN_ARGV* args)
+{
+	int status;
+	DWORD flags;
+	const COMMAND_LINE_ARGUMENT_A* arg;
+	AudinWinmmDevice* winmm = (AudinWinmmDevice*)device;
+	COMMAND_LINE_ARGUMENT_A audin_winmm_args[] = { { "dev", COMMAND_LINE_VALUE_REQUIRED, "<device>",
+		                                             NULL, NULL, -1, NULL, "audio device name" },
+		                                           { NULL, 0, NULL, NULL, NULL, -1, NULL, NULL } };
+
+	flags =
+	    COMMAND_LINE_SIGIL_NONE | COMMAND_LINE_SEPARATOR_COLON | COMMAND_LINE_IGN_UNKNOWN_KEYWORD;
+	status = CommandLineParseArgumentsA(args->argc, args->argv, audin_winmm_args, flags, winmm,
+	                                    NULL, NULL);
+	arg = audin_winmm_args;
+
+	do
+	{
+		if (!(arg->Flags & COMMAND_LINE_VALUE_PRESENT))
+			continue;
+
+		CommandLineSwitchStart(arg) CommandLineSwitchCase(arg, "dev")
+		{
+			winmm->device_name = _strdup(arg->Value);
+
+			if (!winmm->device_name)
+			{
+				WLog_Print(winmm->log, WLOG_ERROR, "_strdup failed!");
+				return CHANNEL_RC_NO_MEMORY;
+			}
+		}
+		CommandLineSwitchEnd(arg)
+	} while ((arg = CommandLineFindNextArgumentA(arg)) != NULL);
+
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+FREERDP_ENTRY_POINT(UINT VCAPITYPE winmm_freerdp_audin_client_subsystem_entry(
+    PFREERDP_AUDIN_DEVICE_ENTRY_POINTS pEntryPoints))
+{
+	const ADDIN_ARGV* args;
+	AudinWinmmDevice* winmm;
+	UINT error;
+
+	if (waveInGetNumDevs() == 0)
+	{
+		WLog_Print(WLog_Get(TAG), WLOG_ERROR, "No microphone available!");
+		return ERROR_DEVICE_NOT_AVAILABLE;
+	}
+
+	winmm = (AudinWinmmDevice*)calloc(1, sizeof(AudinWinmmDevice));
+
+	if (!winmm)
+	{
+		WLog_ERR(TAG, "calloc failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	winmm->log = WLog_Get(TAG);
+	winmm->iface.Open = audin_winmm_open;
+	winmm->iface.FormatSupported = audin_winmm_format_supported;
+	winmm->iface.SetFormat = audin_winmm_set_format;
+	winmm->iface.Close = audin_winmm_close;
+	winmm->iface.Free = audin_winmm_free;
+	winmm->rdpcontext = pEntryPoints->rdpcontext;
+	args = pEntryPoints->args;
+
+	if ((error = audin_winmm_parse_addin_args(winmm, args)))
+	{
+		WLog_Print(winmm->log, WLOG_ERROR,
+		           "audin_winmm_parse_addin_args failed with error %" PRIu32 "!", error);
+		goto error_out;
+	}
+
+	if (!winmm->device_name)
+	{
+		winmm->device_name = _strdup("default");
+
+		if (!winmm->device_name)
+		{
+			WLog_Print(winmm->log, WLOG_ERROR, "_strdup failed!");
+			error = CHANNEL_RC_NO_MEMORY;
+			goto error_out;
+		}
+	}
+
+	winmm->ppwfx_size = 10;
+	winmm->ppwfx = calloc(winmm->ppwfx_size, sizeof(PWAVEFORMATEX));
+
+	if (!winmm->ppwfx)
+	{
+		WLog_Print(winmm->log, WLOG_ERROR, "malloc failed!");
+		error = CHANNEL_RC_NO_MEMORY;
+		goto error_out;
+	}
+
+	if ((error = pEntryPoints->pRegisterAudinDevice(pEntryPoints->plugin, &winmm->iface)))
+	{
+		WLog_Print(winmm->log, WLOG_ERROR, "RegisterAudinDevice failed with error %" PRIu32 "!",
+		           error);
+		goto error_out;
+	}
+
+	return CHANNEL_RC_OK;
+error_out:
+	free(winmm->ppwfx);
+	free(winmm->device_name);
+	free(winmm);
+	return error;
+}

local-test-freerdp-delta-01/afc-freerdp/channels/audin/server/CMakeLists.txt

@@ -0,0 +1,23 @@
+# FreeRDP: A Remote Desktop Protocol Implementation
+# FreeRDP cmake build script
+#
+# Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+define_channel_server("audin")
+
+set(${MODULE_PREFIX}_SRCS audin.c)
+
+set(${MODULE_PREFIX}_LIBS freerdp)
+add_channel_server_library(${MODULE_PREFIX} ${MODULE_NAME} ${CHANNEL_NAME} FALSE "DVCPluginEntry")

local-test-freerdp-delta-01/afc-freerdp/channels/audin/server/audin.c

@@ -0,0 +1,913 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Server Audio Input Virtual Channel
+ *
+ * Copyright 2012 Vic Lee
+ * Copyright 2015 Thincast Technologies GmbH
+ * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
+ * Copyright 2022 Pascal Nowack <Pascal.Nowack@gmx.de>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *	 http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/config.h>
+
+#include <winpr/crt.h>
+#include <winpr/assert.h>
+#include <winpr/synch.h>
+#include <winpr/thread.h>
+#include <winpr/stream.h>
+
+#include <freerdp/freerdp.h>
+#include <freerdp/server/server-common.h>
+#include <freerdp/server/audin.h>
+#include <freerdp/channels/log.h>
+
+#define AUDIN_TAG CHANNELS_TAG("audin.server")
+
+#define SNDIN_HEADER_SIZE 1
+
+typedef enum
+{
+	MSG_SNDIN_VERSION = 0x01,
+	MSG_SNDIN_FORMATS = 0x02,
+	MSG_SNDIN_OPEN = 0x03,
+	MSG_SNDIN_OPEN_REPLY = 0x04,
+	MSG_SNDIN_DATA_INCOMING = 0x05,
+	MSG_SNDIN_DATA = 0x06,
+	MSG_SNDIN_FORMATCHANGE = 0x07,
+} MSG_SNDIN;
+
+typedef struct
+{
+	audin_server_context context;
+
+	HANDLE stopEvent;
+
+	HANDLE thread;
+	void* audin_channel;
+
+	DWORD SessionId;
+
+	AUDIO_FORMAT* audin_server_formats;
+	UINT32 audin_n_server_formats;
+	AUDIO_FORMAT* audin_negotiated_format;
+	UINT32 audin_client_format_idx;
+	wLog* log;
+} audin_server;
+
+static UINT audin_server_recv_version(audin_server_context* context, wStream* s,
+                                      const SNDIN_PDU* header)
+{
+	audin_server* audin = (audin_server*)context;
+	SNDIN_VERSION pdu = { 0 };
+	UINT error = CHANNEL_RC_OK;
+
+	WINPR_ASSERT(context);
+	WINPR_ASSERT(header);
+
+	pdu.Header = *header;
+
+	if (!Stream_CheckAndLogRequiredLengthWLog(audin->log, s, 4))
+		return ERROR_NO_DATA;
+
+	Stream_Read_UINT32(s, pdu.Version);
+
+	IFCALLRET(context->ReceiveVersion, error, context, &pdu);
+	if (error)
+		WLog_Print(audin->log, WLOG_ERROR, "context->ReceiveVersion failed with error %" PRIu32 "",
+		           error);
+
+	return error;
+}
+
+static UINT audin_server_recv_formats(audin_server_context* context, wStream* s,
+                                      const SNDIN_PDU* header)
+{
+	audin_server* audin = (audin_server*)context;
+	SNDIN_FORMATS pdu = { 0 };
+	UINT error = CHANNEL_RC_OK;
+
+	WINPR_ASSERT(context);
+	WINPR_ASSERT(header);
+
+	pdu.Header = *header;
+
+	/* Implementations MUST, at a minimum, support WAVE_FORMAT_PCM (0x0001) */
+	if (!Stream_CheckAndLogRequiredLengthWLog(audin->log, s, 4 + 4 + 18))
+		return ERROR_NO_DATA;
+
+	Stream_Read_UINT32(s, pdu.NumFormats);
+	Stream_Read_UINT32(s, pdu.cbSizeFormatsPacket);
+
+	if (pdu.NumFormats == 0)
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "Sound Formats PDU contains no formats");
+		return ERROR_INVALID_DATA;
+	}
+
+	pdu.SoundFormats = audio_formats_new(pdu.NumFormats);
+	if (!pdu.SoundFormats)
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "Failed to allocate %u SoundFormats", pdu.NumFormats);
+		return ERROR_NOT_ENOUGH_MEMORY;
+	}
+
+	for (UINT32 i = 0; i < pdu.NumFormats; ++i)
+	{
+		AUDIO_FORMAT* format = &pdu.SoundFormats[i];
+
+		if (!audio_format_read(s, format))
+		{
+			WLog_Print(audin->log, WLOG_ERROR, "Failed to read audio format");
+			audio_formats_free(pdu.SoundFormats, i + i);
+			return ERROR_INVALID_DATA;
+		}
+
+		audio_format_print(audin->log, WLOG_DEBUG, format);
+	}
+
+	if (pdu.cbSizeFormatsPacket != Stream_GetPosition(s))
+	{
+		WLog_Print(audin->log, WLOG_WARN,
+		           "cbSizeFormatsPacket is invalid! Expected: %u Got: %zu. Fixing size",
+		           pdu.cbSizeFormatsPacket, Stream_GetPosition(s));
+		const size_t pos = Stream_GetPosition(s);
+		if (pos > UINT32_MAX)
+		{
+			WLog_Print(audin->log, WLOG_ERROR, "Stream too long, %" PRIuz " exceeds UINT32_MAX",
+			           pos);
+			error = ERROR_INVALID_PARAMETER;
+			goto fail;
+		}
+		pdu.cbSizeFormatsPacket = (UINT32)pos;
+	}
+
+	pdu.ExtraDataSize = Stream_GetRemainingLength(s);
+
+	IFCALLRET(context->ReceiveFormats, error, context, &pdu);
+	if (error)
+		WLog_Print(audin->log, WLOG_ERROR, "context->ReceiveFormats failed with error %" PRIu32 "",
+		           error);
+
+fail:
+	audio_formats_free(pdu.SoundFormats, pdu.NumFormats);
+
+	return error;
+}
+
+static UINT audin_server_recv_open_reply(audin_server_context* context, wStream* s,
+                                         const SNDIN_PDU* header)
+{
+	audin_server* audin = (audin_server*)context;
+	SNDIN_OPEN_REPLY pdu = { 0 };
+	UINT error = CHANNEL_RC_OK;
+
+	WINPR_ASSERT(context);
+	WINPR_ASSERT(header);
+
+	pdu.Header = *header;
+
+	if (!Stream_CheckAndLogRequiredLengthWLog(audin->log, s, 4))
+		return ERROR_NO_DATA;
+
+	Stream_Read_UINT32(s, pdu.Result);
+
+	IFCALLRET(context->OpenReply, error, context, &pdu);
+	if (error)
+		WLog_Print(audin->log, WLOG_ERROR, "context->OpenReply failed with error %" PRIu32 "",
+		           error);
+
+	return error;
+}
+
+static UINT audin_server_recv_data_incoming(audin_server_context* context, wStream* s,
+                                            const SNDIN_PDU* header)
+{
+	audin_server* audin = (audin_server*)context;
+	SNDIN_DATA_INCOMING pdu = { 0 };
+	UINT error = CHANNEL_RC_OK;
+
+	WINPR_ASSERT(context);
+	WINPR_ASSERT(header);
+
+	pdu.Header = *header;
+
+	IFCALLRET(context->IncomingData, error, context, &pdu);
+	if (error)
+		WLog_Print(audin->log, WLOG_ERROR, "context->IncomingData failed with error %" PRIu32 "",
+		           error);
+
+	return error;
+}
+
+static UINT audin_server_recv_data(audin_server_context* context, wStream* s,
+                                   const SNDIN_PDU* header)
+{
+	audin_server* audin = (audin_server*)context;
+	SNDIN_DATA pdu = { 0 };
+	wStream dataBuffer = { 0 };
+	UINT error = CHANNEL_RC_OK;
+
+	WINPR_ASSERT(context);
+	WINPR_ASSERT(header);
+
+	pdu.Header = *header;
+
+	pdu.Data = Stream_StaticInit(&dataBuffer, Stream_Pointer(s), Stream_GetRemainingLength(s));
+
+	IFCALLRET(context->Data, error, context, &pdu);
+	if (error)
+		WLog_Print(audin->log, WLOG_ERROR, "context->Data failed with error %" PRIu32 "", error);
+
+	return error;
+}
+
+static UINT audin_server_recv_format_change(audin_server_context* context, wStream* s,
+                                            const SNDIN_PDU* header)
+{
+	audin_server* audin = (audin_server*)context;
+	SNDIN_FORMATCHANGE pdu = { 0 };
+	UINT error = CHANNEL_RC_OK;
+
+	WINPR_ASSERT(context);
+	WINPR_ASSERT(header);
+
+	pdu.Header = *header;
+
+	if (!Stream_CheckAndLogRequiredLengthWLog(audin->log, s, 4))
+		return ERROR_NO_DATA;
+
+	Stream_Read_UINT32(s, pdu.NewFormat);
+
+	IFCALLRET(context->ReceiveFormatChange, error, context, &pdu);
+	if (error)
+		WLog_Print(audin->log, WLOG_ERROR,
+		           "context->ReceiveFormatChange failed with error %" PRIu32 "", error);
+
+	return error;
+}
+
+static DWORD WINAPI audin_server_thread_func(LPVOID arg)
+{
+	wStream* s = NULL;
+	void* buffer = NULL;
+	DWORD nCount = 0;
+	HANDLE events[8] = { 0 };
+	BOOL ready = FALSE;
+	HANDLE ChannelEvent = NULL;
+	DWORD BytesReturned = 0;
+	audin_server* audin = (audin_server*)arg;
+	UINT error = CHANNEL_RC_OK;
+	DWORD status = ERROR_INTERNAL_ERROR;
+
+	WINPR_ASSERT(audin);
+
+	if (WTSVirtualChannelQuery(audin->audin_channel, WTSVirtualEventHandle, &buffer,
+	                           &BytesReturned) == TRUE)
+	{
+		if (BytesReturned == sizeof(HANDLE))
+			ChannelEvent = *(HANDLE*)buffer;
+
+		WTSFreeMemory(buffer);
+	}
+	else
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "WTSVirtualChannelQuery failed");
+		error = ERROR_INTERNAL_ERROR;
+		goto out;
+	}
+
+	nCount = 0;
+	events[nCount++] = audin->stopEvent;
+	events[nCount++] = ChannelEvent;
+
+	/* Wait for the client to confirm that the Audio Input dynamic channel is ready */
+
+	while (1)
+	{
+		if ((status = WaitForMultipleObjects(nCount, events, FALSE, 100)) == WAIT_OBJECT_0)
+			goto out;
+
+		if (status == WAIT_FAILED)
+		{
+			error = GetLastError();
+			WLog_Print(audin->log, WLOG_ERROR,
+			           "WaitForMultipleObjects failed with error %" PRIu32 "", error);
+			goto out;
+		}
+		if (status == WAIT_OBJECT_0)
+			goto out;
+
+		if (WTSVirtualChannelQuery(audin->audin_channel, WTSVirtualChannelReady, &buffer,
+		                           &BytesReturned) == FALSE)
+		{
+			WLog_Print(audin->log, WLOG_ERROR, "WTSVirtualChannelQuery failed");
+			error = ERROR_INTERNAL_ERROR;
+			goto out;
+		}
+
+		ready = *((BOOL*)buffer);
+		WTSFreeMemory(buffer);
+
+		if (ready)
+			break;
+	}
+
+	s = Stream_New(NULL, 4096);
+
+	if (!s)
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "Stream_New failed!");
+		error = CHANNEL_RC_NO_MEMORY;
+		goto out;
+	}
+
+	if (ready)
+	{
+		SNDIN_VERSION version = { 0 };
+
+		version.Version = audin->context.serverVersion;
+
+		if ((error = audin->context.SendVersion(&audin->context, &version)))
+		{
+			WLog_Print(audin->log, WLOG_ERROR, "SendVersion failed with error %" PRIu32 "!", error);
+			goto out_capacity;
+		}
+	}
+
+	while (ready)
+	{
+		SNDIN_PDU header = { 0 };
+
+		if ((status = WaitForMultipleObjects(nCount, events, FALSE, INFINITE)) == WAIT_OBJECT_0)
+			break;
+
+		if (status == WAIT_FAILED)
+		{
+			error = GetLastError();
+			WLog_Print(audin->log, WLOG_ERROR,
+			           "WaitForMultipleObjects failed with error %" PRIu32 "", error);
+			break;
+		}
+		if (status == WAIT_OBJECT_0)
+			break;
+
+		Stream_SetPosition(s, 0);
+
+		if (!WTSVirtualChannelRead(audin->audin_channel, 0, NULL, 0, &BytesReturned))
+		{
+			WLog_Print(audin->log, WLOG_ERROR, "WTSVirtualChannelRead failed!");
+			error = ERROR_INTERNAL_ERROR;
+			break;
+		}
+
+		if (BytesReturned < 1)
+			continue;
+
+		if (!Stream_EnsureRemainingCapacity(s, BytesReturned))
+			break;
+
+		WINPR_ASSERT(Stream_Capacity(s) <= UINT32_MAX);
+		if (WTSVirtualChannelRead(audin->audin_channel, 0, Stream_BufferAs(s, char),
+		                          (ULONG)Stream_Capacity(s), &BytesReturned) == FALSE)
+		{
+			WLog_Print(audin->log, WLOG_ERROR, "WTSVirtualChannelRead failed!");
+			error = ERROR_INTERNAL_ERROR;
+			break;
+		}
+
+		Stream_SetLength(s, BytesReturned);
+		if (!Stream_CheckAndLogRequiredLengthWLog(audin->log, s, SNDIN_HEADER_SIZE))
+		{
+			error = ERROR_INTERNAL_ERROR;
+			break;
+		}
+
+		Stream_Read_UINT8(s, header.MessageId);
+
+		switch (header.MessageId)
+		{
+			case MSG_SNDIN_VERSION:
+				error = audin_server_recv_version(&audin->context, s, &header);
+				break;
+			case MSG_SNDIN_FORMATS:
+				error = audin_server_recv_formats(&audin->context, s, &header);
+				break;
+			case MSG_SNDIN_OPEN_REPLY:
+				error = audin_server_recv_open_reply(&audin->context, s, &header);
+				break;
+			case MSG_SNDIN_DATA_INCOMING:
+				error = audin_server_recv_data_incoming(&audin->context, s, &header);
+				break;
+			case MSG_SNDIN_DATA:
+				error = audin_server_recv_data(&audin->context, s, &header);
+				break;
+			case MSG_SNDIN_FORMATCHANGE:
+				error = audin_server_recv_format_change(&audin->context, s, &header);
+				break;
+			default:
+				WLog_Print(audin->log, WLOG_ERROR,
+				           "audin_server_thread_func: unknown or invalid MessageId %" PRIu8 "",
+				           header.MessageId);
+				error = ERROR_INVALID_DATA;
+				break;
+		}
+		if (error)
+			break;
+	}
+
+out_capacity:
+	Stream_Free(s, TRUE);
+out:
+	(void)WTSVirtualChannelClose(audin->audin_channel);
+	audin->audin_channel = NULL;
+
+	if (error && audin->context.rdpcontext)
+		setChannelError(audin->context.rdpcontext, error,
+		                "audin_server_thread_func reported an error");
+
+	ExitThread(error);
+	return error;
+}
+
+static BOOL audin_server_open(audin_server_context* context)
+{
+	audin_server* audin = (audin_server*)context;
+
+	WINPR_ASSERT(audin);
+	if (!audin->thread)
+	{
+		PULONG pSessionId = NULL;
+		DWORD BytesReturned = 0;
+		audin->SessionId = WTS_CURRENT_SESSION;
+		UINT32 channelId = 0;
+		BOOL status = TRUE;
+
+		if (WTSQuerySessionInformationA(context->vcm, WTS_CURRENT_SESSION, WTSSessionId,
+		                                (LPSTR*)&pSessionId, &BytesReturned))
+		{
+			audin->SessionId = (DWORD)*pSessionId;
+			WTSFreeMemory(pSessionId);
+		}
+
+		audin->audin_channel = WTSVirtualChannelOpenEx(audin->SessionId, AUDIN_DVC_CHANNEL_NAME,
+		                                               WTS_CHANNEL_OPTION_DYNAMIC);
+
+		if (!audin->audin_channel)
+		{
+			WLog_Print(audin->log, WLOG_ERROR, "WTSVirtualChannelOpenEx failed!");
+			return FALSE;
+		}
+
+		channelId = WTSChannelGetIdByHandle(audin->audin_channel);
+
+		IFCALLRET(context->ChannelIdAssigned, status, context, channelId);
+		if (!status)
+		{
+			WLog_Print(audin->log, WLOG_ERROR, "context->ChannelIdAssigned failed!");
+			return FALSE;
+		}
+
+		if (!(audin->stopEvent = CreateEvent(NULL, TRUE, FALSE, NULL)))
+		{
+			WLog_Print(audin->log, WLOG_ERROR, "CreateEvent failed!");
+			return FALSE;
+		}
+
+		if (!(audin->thread =
+		          CreateThread(NULL, 0, audin_server_thread_func, (void*)audin, 0, NULL)))
+		{
+			WLog_Print(audin->log, WLOG_ERROR, "CreateThread failed!");
+			(void)CloseHandle(audin->stopEvent);
+			audin->stopEvent = NULL;
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+	WLog_Print(audin->log, WLOG_ERROR, "thread already running!");
+	return FALSE;
+}
+
+static BOOL audin_server_is_open(audin_server_context* context)
+{
+	audin_server* audin = (audin_server*)context;
+
+	WINPR_ASSERT(audin);
+	return audin->thread != NULL;
+}
+
+static BOOL audin_server_close(audin_server_context* context)
+{
+	audin_server* audin = (audin_server*)context;
+	WINPR_ASSERT(audin);
+
+	if (audin->thread)
+	{
+		(void)SetEvent(audin->stopEvent);
+
+		if (WaitForSingleObject(audin->thread, INFINITE) == WAIT_FAILED)
+		{
+			WLog_Print(audin->log, WLOG_ERROR, "WaitForSingleObject failed with error %" PRIu32 "",
+			           GetLastError());
+			return FALSE;
+		}
+
+		(void)CloseHandle(audin->thread);
+		(void)CloseHandle(audin->stopEvent);
+		audin->thread = NULL;
+		audin->stopEvent = NULL;
+	}
+
+	if (audin->audin_channel)
+	{
+		(void)WTSVirtualChannelClose(audin->audin_channel);
+		audin->audin_channel = NULL;
+	}
+
+	audin->audin_negotiated_format = NULL;
+
+	return TRUE;
+}
+
+static wStream* audin_server_packet_new(wLog* log, size_t size, BYTE MessageId)
+{
+	WINPR_ASSERT(log);
+
+	/* Allocate what we need plus header bytes */
+	wStream* s = Stream_New(NULL, size + SNDIN_HEADER_SIZE);
+	if (!s)
+	{
+		WLog_Print(log, WLOG_ERROR, "Stream_New failed!");
+		return NULL;
+	}
+
+	Stream_Write_UINT8(s, MessageId);
+
+	return s;
+}
+
+static UINT audin_server_packet_send(audin_server_context* context, wStream* s)
+{
+	audin_server* audin = (audin_server*)context;
+	UINT error = CHANNEL_RC_OK;
+	ULONG written = 0;
+
+	WINPR_ASSERT(context);
+	WINPR_ASSERT(s);
+
+	const size_t pos = Stream_GetPosition(s);
+	WINPR_ASSERT(pos <= UINT32_MAX);
+	if (!WTSVirtualChannelWrite(audin->audin_channel, Stream_BufferAs(s, char), (UINT32)pos,
+	                            &written))
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "WTSVirtualChannelWrite failed!");
+		error = ERROR_INTERNAL_ERROR;
+		goto out;
+	}
+
+	if (written < Stream_GetPosition(s))
+	{
+		WLog_Print(audin->log, WLOG_WARN, "Unexpected bytes written: %" PRIu32 "/%" PRIuz "",
+		           written, Stream_GetPosition(s));
+	}
+
+out:
+	Stream_Free(s, TRUE);
+	return error;
+}
+
+static UINT audin_server_send_version(audin_server_context* context, const SNDIN_VERSION* version)
+{
+	audin_server* audin = (audin_server*)context;
+
+	WINPR_ASSERT(context);
+	WINPR_ASSERT(version);
+
+	wStream* s = audin_server_packet_new(audin->log, 4, MSG_SNDIN_VERSION);
+	if (!s)
+		return ERROR_NOT_ENOUGH_MEMORY;
+
+	Stream_Write_UINT32(s, version->Version);
+
+	return audin_server_packet_send(context, s);
+}
+
+static UINT audin_server_send_formats(audin_server_context* context, const SNDIN_FORMATS* formats)
+{
+	audin_server* audin = (audin_server*)context;
+
+	WINPR_ASSERT(audin);
+	WINPR_ASSERT(formats);
+
+	wStream* s = audin_server_packet_new(audin->log, 4 + 4 + 18, MSG_SNDIN_FORMATS);
+	if (!s)
+		return ERROR_NOT_ENOUGH_MEMORY;
+
+	Stream_Write_UINT32(s, formats->NumFormats);
+	Stream_Write_UINT32(s, formats->cbSizeFormatsPacket);
+
+	for (UINT32 i = 0; i < formats->NumFormats; ++i)
+	{
+		AUDIO_FORMAT* format = &formats->SoundFormats[i];
+
+		if (!audio_format_write(s, format))
+		{
+			WLog_Print(audin->log, WLOG_ERROR, "Failed to write audio format");
+			Stream_Free(s, TRUE);
+			return CHANNEL_RC_NO_MEMORY;
+		}
+	}
+
+	return audin_server_packet_send(context, s);
+}
+
+static UINT audin_server_send_open(audin_server_context* context, const SNDIN_OPEN* open)
+{
+	audin_server* audin = (audin_server*)context;
+	WINPR_ASSERT(audin);
+	WINPR_ASSERT(open);
+
+	wStream* s = audin_server_packet_new(audin->log, 4 + 4 + 18 + 22, MSG_SNDIN_OPEN);
+	if (!s)
+		return ERROR_NOT_ENOUGH_MEMORY;
+
+	Stream_Write_UINT32(s, open->FramesPerPacket);
+	Stream_Write_UINT32(s, open->initialFormat);
+
+	Stream_Write_UINT16(s, open->captureFormat.wFormatTag);
+	Stream_Write_UINT16(s, open->captureFormat.nChannels);
+	Stream_Write_UINT32(s, open->captureFormat.nSamplesPerSec);
+	Stream_Write_UINT32(s, open->captureFormat.nAvgBytesPerSec);
+	Stream_Write_UINT16(s, open->captureFormat.nBlockAlign);
+	Stream_Write_UINT16(s, open->captureFormat.wBitsPerSample);
+
+	if (open->ExtraFormatData)
+	{
+		Stream_Write_UINT16(s, 22); /* cbSize */
+
+		Stream_Write_UINT16(s, open->ExtraFormatData->Samples.wReserved);
+		Stream_Write_UINT32(s, open->ExtraFormatData->dwChannelMask);
+
+		Stream_Write_UINT32(s, open->ExtraFormatData->SubFormat.Data1);
+		Stream_Write_UINT16(s, open->ExtraFormatData->SubFormat.Data2);
+		Stream_Write_UINT16(s, open->ExtraFormatData->SubFormat.Data3);
+		Stream_Write_UINT8(s, open->ExtraFormatData->SubFormat.Data4[0]);
+		Stream_Write_UINT8(s, open->ExtraFormatData->SubFormat.Data4[1]);
+		Stream_Write_UINT8(s, open->ExtraFormatData->SubFormat.Data4[2]);
+		Stream_Write_UINT8(s, open->ExtraFormatData->SubFormat.Data4[3]);
+		Stream_Write_UINT8(s, open->ExtraFormatData->SubFormat.Data4[4]);
+		Stream_Write_UINT8(s, open->ExtraFormatData->SubFormat.Data4[5]);
+		Stream_Write_UINT8(s, open->ExtraFormatData->SubFormat.Data4[6]);
+		Stream_Write_UINT8(s, open->ExtraFormatData->SubFormat.Data4[7]);
+	}
+	else
+	{
+		WINPR_ASSERT(open->captureFormat.wFormatTag != WAVE_FORMAT_EXTENSIBLE);
+
+		Stream_Write_UINT16(s, 0); /* cbSize */
+	}
+
+	return audin_server_packet_send(context, s);
+}
+
+static UINT audin_server_send_format_change(audin_server_context* context,
+                                            const SNDIN_FORMATCHANGE* format_change)
+{
+	audin_server* audin = (audin_server*)context;
+
+	WINPR_ASSERT(context);
+	WINPR_ASSERT(format_change);
+
+	wStream* s = audin_server_packet_new(audin->log, 4, MSG_SNDIN_FORMATCHANGE);
+	if (!s)
+		return ERROR_NOT_ENOUGH_MEMORY;
+
+	Stream_Write_UINT32(s, format_change->NewFormat);
+
+	return audin_server_packet_send(context, s);
+}
+
+static UINT audin_server_receive_version_default(audin_server_context* audin_ctx,
+                                                 const SNDIN_VERSION* version)
+{
+	audin_server* audin = (audin_server*)audin_ctx;
+	SNDIN_FORMATS formats = { 0 };
+
+	WINPR_ASSERT(audin);
+	WINPR_ASSERT(version);
+
+	if (version->Version == 0)
+	{
+		WLog_Print(audin->log, WLOG_ERROR, "Received invalid AUDIO_INPUT version from client");
+		return ERROR_INVALID_DATA;
+	}
+
+	WLog_Print(audin->log, WLOG_DEBUG, "AUDIO_INPUT version of client: %u", version->Version);
+
+	formats.NumFormats = audin->audin_n_server_formats;
+	formats.SoundFormats = audin->audin_server_formats;
+
+	return audin->context.SendFormats(&audin->context, &formats);
+}
+
+static UINT send_open(audin_server* audin)
+{
+	SNDIN_OPEN open = { 0 };
+
+	WINPR_ASSERT(audin);
+
+	open.FramesPerPacket = 441;
+	open.initialFormat = audin->audin_client_format_idx;
+	open.captureFormat.wFormatTag = WAVE_FORMAT_PCM;
+	open.captureFormat.nChannels = 2;
+	open.captureFormat.nSamplesPerSec = 44100;
+	open.captureFormat.nAvgBytesPerSec = 44100 * 2 * 2;
+	open.captureFormat.nBlockAlign = 4;
+	open.captureFormat.wBitsPerSample = 16;
+
+	WINPR_ASSERT(audin->context.SendOpen);
+	return audin->context.SendOpen(&audin->context, &open);
+}
+
+static UINT audin_server_receive_formats_default(audin_server_context* context,
+                                                 const SNDIN_FORMATS* formats)
+{
+	audin_server* audin = (audin_server*)context;
+	WINPR_ASSERT(audin);
+	WINPR_ASSERT(formats);
+
+	if (audin->audin_negotiated_format)
+	{
+		WLog_Print(audin->log, WLOG_ERROR,
+		           "Received client formats, but negotiation was already done");
+		return ERROR_INVALID_DATA;
+	}
+
+	for (UINT32 i = 0; i < audin->audin_n_server_formats; ++i)
+	{
+		for (UINT32 j = 0; j < formats->NumFormats; ++j)
+		{
+			if (audio_format_compatible(&audin->audin_server_formats[i], &formats->SoundFormats[j]))
+			{
+				audin->audin_negotiated_format = &audin->audin_server_formats[i];
+				audin->audin_client_format_idx = i;
+				return send_open(audin);
+			}
+		}
+	}
+
+	WLog_Print(audin->log, WLOG_ERROR, "Could not agree on a audio format with the server");
+
+	return ERROR_INVALID_DATA;
+}
+
+static UINT audin_server_receive_format_change_default(audin_server_context* context,
+                                                       const SNDIN_FORMATCHANGE* format_change)
+{
+	audin_server* audin = (audin_server*)context;
+
+	WINPR_ASSERT(audin);
+	WINPR_ASSERT(format_change);
+
+	if (format_change->NewFormat != audin->audin_client_format_idx)
+	{
+		WLog_Print(audin->log, WLOG_ERROR,
+		           "NewFormat in FormatChange differs from requested format");
+		return ERROR_INVALID_DATA;
+	}
+
+	WLog_Print(audin->log, WLOG_DEBUG, "Received Format Change PDU: %u", format_change->NewFormat);
+
+	return CHANNEL_RC_OK;
+}
+
+static UINT audin_server_incoming_data_default(audin_server_context* context,
+                                               const SNDIN_DATA_INCOMING* data_incoming)
+{
+	audin_server* audin = (audin_server*)context;
+	WINPR_ASSERT(audin);
+	WINPR_ASSERT(data_incoming);
+
+	/* TODO: Implement bandwidth measure of clients uplink */
+	WLog_Print(audin->log, WLOG_DEBUG, "Received Incoming Data PDU");
+	return CHANNEL_RC_OK;
+}
+
+static UINT audin_server_open_reply_default(audin_server_context* context,
+                                            const SNDIN_OPEN_REPLY* open_reply)
+{
+	audin_server* audin = (audin_server*)context;
+	WINPR_ASSERT(audin);
+	WINPR_ASSERT(open_reply);
+
+	/* TODO: Implement failure handling */
+	WLog_Print(audin->log, WLOG_DEBUG, "Open Reply PDU: Result: %i", open_reply->Result);
+	return CHANNEL_RC_OK;
+}
+
+audin_server_context* audin_server_context_new(HANDLE vcm)
+{
+	audin_server* audin = (audin_server*)calloc(1, sizeof(audin_server));
+
+	if (!audin)
+	{
+		WLog_ERR(AUDIN_TAG, "calloc failed!");
+		return NULL;
+	}
+	audin->log = WLog_Get(AUDIN_TAG);
+	audin->context.vcm = vcm;
+	audin->context.Open = audin_server_open;
+	audin->context.IsOpen = audin_server_is_open;
+	audin->context.Close = audin_server_close;
+
+	audin->context.SendVersion = audin_server_send_version;
+	audin->context.SendFormats = audin_server_send_formats;
+	audin->context.SendOpen = audin_server_send_open;
+	audin->context.SendFormatChange = audin_server_send_format_change;
+
+	/* Default values */
+	audin->context.serverVersion = SNDIN_VERSION_Version_2;
+	audin->context.ReceiveVersion = audin_server_receive_version_default;
+	audin->context.ReceiveFormats = audin_server_receive_formats_default;
+	audin->context.ReceiveFormatChange = audin_server_receive_format_change_default;
+	audin->context.IncomingData = audin_server_incoming_data_default;
+	audin->context.OpenReply = audin_server_open_reply_default;
+
+	return &audin->context;
+}
+
+void audin_server_context_free(audin_server_context* context)
+{
+	audin_server* audin = (audin_server*)context;
+
+	if (!audin)
+		return;
+
+	audin_server_close(context);
+	audio_formats_free(audin->audin_server_formats, audin->audin_n_server_formats);
+	audin->audin_server_formats = NULL;
+	free(audin);
+}
+
+BOOL audin_server_set_formats(audin_server_context* context, SSIZE_T count,
+                              const AUDIO_FORMAT* formats)
+{
+	audin_server* audin = (audin_server*)context;
+	WINPR_ASSERT(audin);
+
+	audio_formats_free(audin->audin_server_formats, audin->audin_n_server_formats);
+	audin->audin_n_server_formats = 0;
+	audin->audin_server_formats = NULL;
+	audin->audin_negotiated_format = NULL;
+
+	if (count < 0)
+	{
+		const size_t audin_n_server_formats =
+		    server_audin_get_formats(&audin->audin_server_formats);
+		WINPR_ASSERT(audin_n_server_formats <= UINT32_MAX);
+
+		audin->audin_n_server_formats = (UINT32)audin_n_server_formats;
+	}
+	else
+	{
+		const size_t scount = (size_t)count;
+		AUDIO_FORMAT* audin_server_formats = audio_formats_new(scount);
+		if (!audin_server_formats)
+			return count == 0;
+
+		for (SSIZE_T x = 0; x < count; x++)
+		{
+			if (!audio_format_copy(&formats[x], &audin_server_formats[x]))
+			{
+				audio_formats_free(audin_server_formats, scount);
+				return FALSE;
+			}
+		}
+
+		WINPR_ASSERT(count <= UINT32_MAX);
+		audin->audin_server_formats = audin_server_formats;
+		audin->audin_n_server_formats = (UINT32)count;
+	}
+	return audin->audin_n_server_formats > 0;
+}
+
+const AUDIO_FORMAT* audin_server_get_negotiated_format(const audin_server_context* context)
+{
+	const audin_server* audin = (const audin_server*)context;
+	WINPR_ASSERT(audin);
+
+	return audin->audin_negotiated_format;
+}

local-test-freerdp-delta-01/afc-freerdp/channels/client/CMakeLists.txt

@@ -0,0 +1,165 @@
+# FreeRDP: A Remote Desktop Protocol Implementation
+# FreeRDP cmake build script
+#
+# Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+# Copyright 2024 Armin Novak <anovak@thincast.com>
+# Copyright 2024 Thincast Technologies GmbH
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set(MODULE_NAME "freerdp-channels-client")
+set(MODULE_PREFIX "FREERDP_CHANNELS_CLIENT")
+
+set(${MODULE_PREFIX}_SRCS
+    ${CMAKE_CURRENT_BINARY_DIR}/tables.c ${CMAKE_CURRENT_SOURCE_DIR}/tables.h ${CMAKE_CURRENT_SOURCE_DIR}/addin.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/addin.h ${CMAKE_CURRENT_SOURCE_DIR}/generic_dynvc.c
+)
+
+if(CHANNEL_STATIC_CLIENT_ENTRIES)
+  list(REMOVE_DUPLICATES CHANNEL_STATIC_CLIENT_ENTRIES)
+endif()
+
+foreach(STATIC_ENTRY ${CHANNEL_STATIC_CLIENT_ENTRIES})
+  foreach(STATIC_MODULE ${CHANNEL_STATIC_CLIENT_MODULES})
+    foreach(ENTRY ${${STATIC_MODULE}_CLIENT_ENTRY})
+      if(${ENTRY} STREQUAL ${STATIC_ENTRY})
+        set(STATIC_MODULE_NAME ${${STATIC_MODULE}_CLIENT_NAME})
+        set(STATIC_MODULE_CHANNEL ${${STATIC_MODULE}_CLIENT_CHANNEL})
+        list(APPEND ${MODULE_PREFIX}_LIBS ${STATIC_MODULE_NAME})
+
+        set(ENTRY_POINT_NAME "${STATIC_MODULE_CHANNEL}_${ENTRY}")
+        if(${ENTRY} STREQUAL "VirtualChannelEntry")
+          set(ENTRY_POINT_IMPORT "extern BOOL VCAPITYPE ${ENTRY_POINT_NAME}(PCHANNEL_ENTRY_POINTS);")
+        elseif(${ENTRY} STREQUAL "VirtualChannelEntryEx")
+          set(ENTRY_POINT_IMPORT "extern BOOL VCAPITYPE ${ENTRY_POINT_NAME}(PCHANNEL_ENTRY_POINTS,PVOID);")
+        elseif(${ENTRY} MATCHES "DVCPluginEntry$")
+          set(ENTRY_POINT_IMPORT "extern UINT VCAPITYPE ${ENTRY_POINT_NAME}(IDRDYNVC_ENTRY_POINTS* pEntryPoints);")
+        elseif(${ENTRY} MATCHES "DeviceServiceEntry$")
+          set(ENTRY_POINT_IMPORT
+              "extern UINT VCAPITYPE ${ENTRY_POINT_NAME}(PDEVICE_SERVICE_ENTRY_POINTS pEntryPoints);"
+          )
+        else()
+          set(ENTRY_POINT_IMPORT "extern UINT VCAPITYPE ${ENTRY_POINT_NAME}(void);")
+        endif()
+
+        string(APPEND ${STATIC_ENTRY}_IMPORTS "\n${ENTRY_POINT_IMPORT}")
+        string(APPEND ${STATIC_ENTRY}_TABLE "\n\t{ \"${STATIC_MODULE_CHANNEL}\", ${ENTRY_POINT_NAME} },")
+      endif()
+    endforeach()
+  endforeach()
+endforeach()
+
+string(APPEND CLIENT_STATIC_ENTRY_TABLES_LIST "\nextern const STATIC_ENTRY_TABLE CLIENT_STATIC_ENTRY_TABLES[];\n")
+string(APPEND CLIENT_STATIC_ENTRY_TABLES_LIST "const STATIC_ENTRY_TABLE CLIENT_STATIC_ENTRY_TABLES[] =\n{")
+
+foreach(STATIC_ENTRY ${CHANNEL_STATIC_CLIENT_ENTRIES})
+  set(CLIENT_STATIC_ENTRY_IMPORTS "${CLIENT_STATIC_ENTRY_IMPORTS}\n${${STATIC_ENTRY}_IMPORTS}")
+  if(${STATIC_ENTRY} STREQUAL "VirtualChannelEntry")
+    set(CLIENT_STATIC_ENTRY_TYPE "STATIC_ENTRY_VC")
+    set(CLIENT_STATIC_ENTRY_INITIALIZER ".csevc")
+  elseif(${STATIC_ENTRY} STREQUAL "VirtualChannelEntryEx")
+    set(CLIENT_STATIC_ENTRY_TYPE "STATIC_ENTRY_VCEX")
+    set(CLIENT_STATIC_ENTRY_INITIALIZER ".csevcex")
+  elseif(${STATIC_ENTRY} MATCHES "DVCPluginEntry$")
+    set(CLIENT_STATIC_ENTRY_TYPE "STATIC_ENTRY_DVC")
+    set(CLIENT_STATIC_ENTRY_INITIALIZER ".csedvc")
+  elseif(${STATIC_ENTRY} MATCHES "DeviceServiceEntry$")
+    set(CLIENT_STATIC_ENTRY_TYPE "STATIC_ENTRY_DSE")
+    set(CLIENT_STATIC_ENTRY_INITIALIZER ".csedse")
+  else()
+    set(CLIENT_STATIC_ENTRY_TYPE "STATIC_ENTRY")
+    set(CLIENT_STATIC_ENTRY_INITIALIZER ".cse")
+  endif()
+
+  string(APPEND CLIENT_STATIC_ENTRY_TABLES
+         "\nextern const ${CLIENT_STATIC_ENTRY_TYPE} CLIENT_${STATIC_ENTRY}_TABLE[];\n"
+  )
+  string(APPEND CLIENT_STATIC_ENTRY_TABLES "const ${CLIENT_STATIC_ENTRY_TYPE} CLIENT_${STATIC_ENTRY}_TABLE[] =\n{")
+  string(APPEND CLIENT_STATIC_ENTRY_TABLES "\n${${STATIC_ENTRY}_TABLE}")
+  string(APPEND CLIENT_STATIC_ENTRY_TABLES "\n\t{ NULL, NULL }\n};")
+  string(APPEND CLIENT_STATIC_ENTRY_TABLES_LIST
+         "\n\t{ \"${STATIC_ENTRY}\", { ${CLIENT_STATIC_ENTRY_INITIALIZER} = CLIENT_${STATIC_ENTRY}_TABLE } },"
+  )
+endforeach()
+
+string(APPEND CLIENT_STATIC_ENTRY_TABLES_LIST "\n\t{ NULL, { .cse = NULL } }\n};")
+
+set(CLIENT_STATIC_ADDIN_TABLE "extern const STATIC_ADDIN_TABLE CLIENT_STATIC_ADDIN_TABLE[];\n")
+string(APPEND CLIENT_STATIC_ADDIN_TABLE "const STATIC_ADDIN_TABLE CLIENT_STATIC_ADDIN_TABLE[] =\n{")
+
+foreach(STATIC_MODULE ${CHANNEL_STATIC_CLIENT_MODULES})
+  set(STATIC_MODULE_NAME ${${STATIC_MODULE}_CLIENT_NAME})
+  set(STATIC_MODULE_CHANNEL ${${STATIC_MODULE}_CLIENT_CHANNEL})
+  string(TOUPPER "CLIENT_${STATIC_MODULE_CHANNEL}_SUBSYSTEM_TABLE" SUBSYSTEM_TABLE_NAME)
+  set(SUBSYSTEM_TABLE
+      "extern const STATIC_SUBSYSTEM_ENTRY ${SUBSYSTEM_TABLE_NAME}[];\nconst STATIC_SUBSYSTEM_ENTRY ${SUBSYSTEM_TABLE_NAME}[] =\n{"
+  )
+  get_target_property(CHANNEL_SUBSYSTEMS ${STATIC_MODULE_NAME} SUBSYSTEMS)
+  if(CHANNEL_SUBSYSTEMS MATCHES "NOTFOUND")
+    set(CHANNEL_SUBSYSTEMS "")
+  endif()
+  foreach(STATIC_SUBSYSTEM ${CHANNEL_SUBSYSTEMS})
+    if(${STATIC_SUBSYSTEM} MATCHES "^([^-]*)-(.*)")
+      string(REGEX REPLACE "^([^-]*)-(.*)" "\\1" STATIC_SUBSYSTEM_NAME ${STATIC_SUBSYSTEM})
+      string(REGEX REPLACE "^([^-]*)-(.*)" "\\2" STATIC_SUBSYSTEM_TYPE ${STATIC_SUBSYSTEM})
+    else()
+      set(STATIC_SUBSYSTEM_NAME "${STATIC_SUBSYSTEM}")
+      set(STATIC_SUBSYSTEM_TYPE "")
+    endif()
+    string(LENGTH "${STATIC_SUBSYSTEM_TYPE}" _type_length)
+    set(SUBSYSTEM_MODULE_NAME "${STATIC_MODULE_NAME}-${STATIC_SUBSYSTEM}")
+    list(APPEND ${MODULE_PREFIX}_LIBS ${SUBSYSTEM_MODULE_NAME})
+    if(_type_length GREATER 0)
+      set(STATIC_SUBSYSTEM_ENTRY
+          "${STATIC_SUBSYSTEM_NAME}_freerdp_${STATIC_MODULE_CHANNEL}_client_${STATIC_SUBSYSTEM_TYPE}_subsystem_entry"
+      )
+    else()
+      set(STATIC_SUBSYSTEM_ENTRY "${STATIC_SUBSYSTEM_NAME}_freerdp_${STATIC_MODULE_CHANNEL}_client_subsystem_entry")
+    endif()
+    string(APPEND SUBSYSTEM_TABLE
+           "\n\t{ \"${STATIC_SUBSYSTEM_NAME}\", \"${STATIC_SUBSYSTEM_TYPE}\", ${STATIC_SUBSYSTEM_ENTRY} },"
+    )
+    set(SUBSYSTEM_IMPORT "extern UINT VCAPITYPE ${STATIC_SUBSYSTEM_ENTRY}(void*);")
+    string(APPEND CLIENT_STATIC_SUBSYSTEM_IMPORTS "\n${SUBSYSTEM_IMPORT}")
+  endforeach()
+  string(APPEND SUBSYSTEM_TABLE "\n\t{ NULL, NULL, NULL }\n};")
+  string(APPEND CLIENT_STATIC_SUBSYSTEM_TABLES "\n${SUBSYSTEM_TABLE}")
+
+  foreach(ENTRY ${${STATIC_MODULE}_CLIENT_ENTRY})
+    set(ENTRY_POINT_NAME ${STATIC_MODULE_CHANNEL}_${ENTRY})
+    if(${ENTRY} STREQUAL "VirtualChannelEntry")
+      set(ENTRY_INITIALIZER ".csevc")
+    elseif(${ENTRY} STREQUAL "VirtualChannelEntryEx")
+      set(ENTRY_INITIALIZER ".csevcex")
+    elseif(${ENTRY} MATCHES "DVCPluginEntry$")
+      set(ENTRY_INITIALIZER ".csedvc")
+    elseif(${ENTRY} MATCHES "DeviceServiceEntry$")
+      set(ENTRY_INITIALIZER ".csedse")
+    else()
+      set(ENTRY_INITIALIZER ".cse")
+    endif()
+    string(
+      APPEND
+      CLIENT_STATIC_ADDIN_TABLE
+      "\n\t{ \"${STATIC_MODULE_CHANNEL}\", \"${ENTRY}\", { ${ENTRY_INITIALIZER} = ${ENTRY_POINT_NAME} }, ${SUBSYSTEM_TABLE_NAME} },"
+    )
+  endforeach()
+endforeach()
+string(APPEND CLIENT_STATIC_ADDIN_TABLE "\n\t{ NULL, NULL, { .cse = NULL }, NULL }\n};")
+
+cleaning_configure_file(${CMAKE_CURRENT_SOURCE_DIR}/tables.c.in ${CMAKE_CURRENT_BINARY_DIR}/tables.c)
+
+set(${MODULE_PREFIX}_LIBS ${${MODULE_PREFIX}_LIBS} freerdp winpr)
+
+set(${MODULE_PREFIX}_SRCS ${${MODULE_PREFIX}_SRCS} PARENT_SCOPE)
+set(${MODULE_PREFIX}_LIBS ${${MODULE_PREFIX}_LIBS} PARENT_SCOPE)

local-test-freerdp-delta-01/afc-freerdp/channels/client/addin.c

@@ -0,0 +1,761 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Channel Addins
+ *
+ * Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+ * Copyright 2015 Thincast Technologies GmbH
+ * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/config.h>
+
+#include <winpr/crt.h>
+#include <winpr/assert.h>
+#include <winpr/path.h>
+#include <winpr/string.h>
+#include <winpr/file.h>
+#include <winpr/synch.h>
+#include <winpr/library.h>
+#include <winpr/collections.h>
+
+#include <freerdp/freerdp.h>
+#include <freerdp/addin.h>
+#include <freerdp/build-config.h>
+#include <freerdp/client/channels.h>
+
+#include "tables.h"
+
+#include "addin.h"
+
+#include <freerdp/channels/log.h>
+#define TAG CHANNELS_TAG("addin")
+
+extern const STATIC_ENTRY_TABLE CLIENT_STATIC_ENTRY_TABLES[];
+
+static void* freerdp_channels_find_static_entry_in_table(const STATIC_ENTRY_TABLE* table,
+                                                         const char* identifier)
+{
+	size_t index = 0;
+	const STATIC_ENTRY* pEntry = &table->table.cse[index++];
+
+	while (pEntry->entry != NULL)
+	{
+		static_entry_fn_t fkt = pEntry->entry;
+		if (strcmp(pEntry->name, identifier) == 0)
+			return WINPR_FUNC_PTR_CAST(fkt, void*);
+
+		pEntry = &table->table.cse[index++];
+	}
+
+	return NULL;
+}
+
+void* freerdp_channels_client_find_static_entry(const char* name, const char* identifier)
+{
+	size_t index = 0;
+	const STATIC_ENTRY_TABLE* pEntry = &CLIENT_STATIC_ENTRY_TABLES[index++];
+
+	while (pEntry->table.cse != NULL)
+	{
+		if (strcmp(pEntry->name, name) == 0)
+		{
+			return freerdp_channels_find_static_entry_in_table(pEntry, identifier);
+		}
+
+		pEntry = &CLIENT_STATIC_ENTRY_TABLES[index++];
+	}
+
+	return NULL;
+}
+
+extern const STATIC_ADDIN_TABLE CLIENT_STATIC_ADDIN_TABLE[];
+
+static FREERDP_ADDIN** freerdp_channels_list_client_static_addins(LPCSTR pszName,
+                                                                  LPCSTR pszSubsystem,
+                                                                  LPCSTR pszType, DWORD dwFlags)
+{
+	DWORD nAddins = 0;
+	FREERDP_ADDIN** ppAddins = NULL;
+	const STATIC_SUBSYSTEM_ENTRY* subsystems = NULL;
+	nAddins = 0;
+	ppAddins = (FREERDP_ADDIN**)calloc(128, sizeof(FREERDP_ADDIN*));
+
+	if (!ppAddins)
+	{
+		WLog_ERR(TAG, "calloc failed!");
+		return NULL;
+	}
+
+	ppAddins[nAddins] = NULL;
+
+	for (size_t i = 0; CLIENT_STATIC_ADDIN_TABLE[i].name != NULL; i++)
+	{
+		FREERDP_ADDIN* pAddin = (FREERDP_ADDIN*)calloc(1, sizeof(FREERDP_ADDIN));
+		const STATIC_ADDIN_TABLE* table = &CLIENT_STATIC_ADDIN_TABLE[i];
+		if (!pAddin)
+		{
+			WLog_ERR(TAG, "calloc failed!");
+			goto error_out;
+		}
+
+		(void)sprintf_s(pAddin->cName, ARRAYSIZE(pAddin->cName), "%s", table->name);
+		pAddin->dwFlags = FREERDP_ADDIN_CLIENT;
+		pAddin->dwFlags |= FREERDP_ADDIN_STATIC;
+		pAddin->dwFlags |= FREERDP_ADDIN_NAME;
+		ppAddins[nAddins++] = pAddin;
+		subsystems = table->table;
+
+		for (size_t j = 0; subsystems[j].name != NULL; j++)
+		{
+			pAddin = (FREERDP_ADDIN*)calloc(1, sizeof(FREERDP_ADDIN));
+
+			if (!pAddin)
+			{
+				WLog_ERR(TAG, "calloc failed!");
+				goto error_out;
+			}
+
+			(void)sprintf_s(pAddin->cName, ARRAYSIZE(pAddin->cName), "%s", table->name);
+			(void)sprintf_s(pAddin->cSubsystem, ARRAYSIZE(pAddin->cSubsystem), "%s",
+			                subsystems[j].name);
+			pAddin->dwFlags = FREERDP_ADDIN_CLIENT;
+			pAddin->dwFlags |= FREERDP_ADDIN_STATIC;
+			pAddin->dwFlags |= FREERDP_ADDIN_NAME;
+			pAddin->dwFlags |= FREERDP_ADDIN_SUBSYSTEM;
+			ppAddins[nAddins++] = pAddin;
+		}
+	}
+
+	return ppAddins;
+error_out:
+	freerdp_channels_addin_list_free(ppAddins);
+	return NULL;
+}
+
+static HANDLE FindFirstFileUTF8(LPCSTR pszSearchPath, WIN32_FIND_DATAW* FindData)
+{
+	HANDLE hdl = INVALID_HANDLE_VALUE;
+	if (!pszSearchPath)
+		return hdl;
+	WCHAR* wpath = ConvertUtf8ToWCharAlloc(pszSearchPath, NULL);
+	if (!wpath)
+		return hdl;
+
+	hdl = FindFirstFileW(wpath, FindData);
+	free(wpath);
+
+	return hdl;
+}
+
+static FREERDP_ADDIN** freerdp_channels_list_dynamic_addins(LPCSTR pszName, LPCSTR pszSubsystem,
+                                                            LPCSTR pszType, DWORD dwFlags)
+{
+	int nDashes = 0;
+	HANDLE hFind = NULL;
+	DWORD nAddins = 0;
+	LPSTR pszPattern = NULL;
+	size_t cchPattern = 0;
+	LPCSTR pszAddinPath = FREERDP_ADDIN_PATH;
+	LPCSTR pszInstallPrefix = FREERDP_INSTALL_PREFIX;
+	LPCSTR pszExtension = NULL;
+	LPSTR pszSearchPath = NULL;
+	size_t cchSearchPath = 0;
+	size_t cchAddinPath = 0;
+	size_t cchInstallPrefix = 0;
+	FREERDP_ADDIN** ppAddins = NULL;
+	WIN32_FIND_DATAW FindData = { 0 };
+	cchAddinPath = strnlen(pszAddinPath, sizeof(FREERDP_ADDIN_PATH));
+	cchInstallPrefix = strnlen(pszInstallPrefix, sizeof(FREERDP_INSTALL_PREFIX));
+	pszExtension = PathGetSharedLibraryExtensionA(0);
+	cchPattern = 128 + strnlen(pszExtension, MAX_PATH) + 2;
+	pszPattern = (LPSTR)malloc(cchPattern + 1);
+
+	if (!pszPattern)
+	{
+		WLog_ERR(TAG, "malloc failed!");
+		return NULL;
+	}
+
+	if (pszName && pszSubsystem && pszType)
+	{
+		(void)sprintf_s(pszPattern, cchPattern, FREERDP_SHARED_LIBRARY_PREFIX "%s-client-%s-%s.%s",
+		                pszName, pszSubsystem, pszType, pszExtension);
+	}
+	else if (pszName && pszType)
+	{
+		(void)sprintf_s(pszPattern, cchPattern, FREERDP_SHARED_LIBRARY_PREFIX "%s-client-?-%s.%s",
+		                pszName, pszType, pszExtension);
+	}
+	else if (pszName)
+	{
+		(void)sprintf_s(pszPattern, cchPattern, FREERDP_SHARED_LIBRARY_PREFIX "%s-client*.%s",
+		                pszName, pszExtension);
+	}
+	else
+	{
+		(void)sprintf_s(pszPattern, cchPattern, FREERDP_SHARED_LIBRARY_PREFIX "?-client*.%s",
+		                pszExtension);
+	}
+
+	cchPattern = strnlen(pszPattern, cchPattern);
+	cchSearchPath = cchInstallPrefix + cchAddinPath + cchPattern + 3;
+	pszSearchPath = (LPSTR)calloc(cchSearchPath + 1, sizeof(char));
+
+	if (!pszSearchPath)
+	{
+		WLog_ERR(TAG, "malloc failed!");
+		free(pszPattern);
+		return NULL;
+	}
+
+	CopyMemory(pszSearchPath, pszInstallPrefix, cchInstallPrefix);
+	pszSearchPath[cchInstallPrefix] = '\0';
+	const HRESULT hr1 = NativePathCchAppendA(pszSearchPath, cchSearchPath + 1, pszAddinPath);
+	const HRESULT hr2 = NativePathCchAppendA(pszSearchPath, cchSearchPath + 1, pszPattern);
+	free(pszPattern);
+
+	if (FAILED(hr1) || FAILED(hr2))
+	{
+		free(pszSearchPath);
+		return NULL;
+	}
+
+	hFind = FindFirstFileUTF8(pszSearchPath, &FindData);
+
+	free(pszSearchPath);
+	nAddins = 0;
+	ppAddins = (FREERDP_ADDIN**)calloc(128, sizeof(FREERDP_ADDIN*));
+
+	if (!ppAddins)
+	{
+		FindClose(hFind);
+		WLog_ERR(TAG, "calloc failed!");
+		return NULL;
+	}
+
+	if (hFind == INVALID_HANDLE_VALUE)
+		return ppAddins;
+
+	do
+	{
+		char* cFileName = NULL;
+		BOOL used = FALSE;
+		FREERDP_ADDIN* pAddin = (FREERDP_ADDIN*)calloc(1, sizeof(FREERDP_ADDIN));
+
+		if (!pAddin)
+		{
+			WLog_ERR(TAG, "calloc failed!");
+			goto error_out;
+		}
+
+		cFileName =
+		    ConvertWCharNToUtf8Alloc(FindData.cFileName, ARRAYSIZE(FindData.cFileName), NULL);
+		if (!cFileName)
+			goto skip;
+
+		nDashes = 0;
+		for (size_t index = 0; cFileName[index]; index++)
+			nDashes += (cFileName[index] == '-') ? 1 : 0;
+
+		if (nDashes == 1)
+		{
+			size_t len = 0;
+			char* p[2] = { 0 };
+			/* <name>-client.<extension> */
+			p[0] = cFileName;
+			p[1] = strchr(p[0], '-');
+			if (!p[1])
+				goto skip;
+			p[1] += 1;
+
+			len = (size_t)(p[1] - p[0]);
+			if (len < 1)
+			{
+				WLog_WARN(TAG, "Skipping file '%s', invalid format", cFileName);
+				goto skip;
+			}
+			strncpy(pAddin->cName, p[0], MIN(ARRAYSIZE(pAddin->cName), len - 1));
+
+			pAddin->dwFlags = FREERDP_ADDIN_CLIENT;
+			pAddin->dwFlags |= FREERDP_ADDIN_DYNAMIC;
+			pAddin->dwFlags |= FREERDP_ADDIN_NAME;
+			ppAddins[nAddins++] = pAddin;
+
+			used = TRUE;
+		}
+		else if (nDashes == 2)
+		{
+			size_t len = 0;
+			char* p[4] = { 0 };
+			/* <name>-client-<subsystem>.<extension> */
+			p[0] = cFileName;
+			p[1] = strchr(p[0], '-');
+			if (!p[1])
+				goto skip;
+			p[1] += 1;
+			p[2] = strchr(p[1], '-');
+			if (!p[2])
+				goto skip;
+			p[2] += 1;
+			p[3] = strchr(p[2], '.');
+			if (!p[3])
+				goto skip;
+			p[3] += 1;
+
+			len = (size_t)(p[1] - p[0]);
+			if (len < 1)
+			{
+				WLog_WARN(TAG, "Skipping file '%s', invalid format", cFileName);
+				goto skip;
+			}
+			strncpy(pAddin->cName, p[0], MIN(ARRAYSIZE(pAddin->cName), len - 1));
+
+			len = (size_t)(p[3] - p[2]);
+			if (len < 1)
+			{
+				WLog_WARN(TAG, "Skipping file '%s', invalid format", cFileName);
+				goto skip;
+			}
+			strncpy(pAddin->cSubsystem, p[2], MIN(ARRAYSIZE(pAddin->cSubsystem), len - 1));
+
+			pAddin->dwFlags = FREERDP_ADDIN_CLIENT;
+			pAddin->dwFlags |= FREERDP_ADDIN_DYNAMIC;
+			pAddin->dwFlags |= FREERDP_ADDIN_NAME;
+			pAddin->dwFlags |= FREERDP_ADDIN_SUBSYSTEM;
+			ppAddins[nAddins++] = pAddin;
+
+			used = TRUE;
+		}
+		else if (nDashes == 3)
+		{
+			size_t len = 0;
+			char* p[5] = { 0 };
+			/* <name>-client-<subsystem>-<type>.<extension> */
+			p[0] = cFileName;
+			p[1] = strchr(p[0], '-');
+			if (!p[1])
+				goto skip;
+			p[1] += 1;
+			p[2] = strchr(p[1], '-');
+			if (!p[2])
+				goto skip;
+			p[2] += 1;
+			p[3] = strchr(p[2], '-');
+			if (!p[3])
+				goto skip;
+			p[3] += 1;
+			p[4] = strchr(p[3], '.');
+			if (!p[4])
+				goto skip;
+			p[4] += 1;
+
+			len = (size_t)(p[1] - p[0]);
+			if (len < 1)
+			{
+				WLog_WARN(TAG, "Skipping file '%s', invalid format", cFileName);
+				goto skip;
+			}
+			strncpy(pAddin->cName, p[0], MIN(ARRAYSIZE(pAddin->cName), len - 1));
+
+			len = (size_t)(p[3] - p[2]);
+			if (len < 1)
+			{
+				WLog_WARN(TAG, "Skipping file '%s', invalid format", cFileName);
+				goto skip;
+			}
+			strncpy(pAddin->cSubsystem, p[2], MIN(ARRAYSIZE(pAddin->cSubsystem), len - 1));
+
+			len = (size_t)(p[4] - p[3]);
+			if (len < 1)
+			{
+				WLog_WARN(TAG, "Skipping file '%s', invalid format", cFileName);
+				goto skip;
+			}
+			strncpy(pAddin->cType, p[3], MIN(ARRAYSIZE(pAddin->cType), len - 1));
+
+			pAddin->dwFlags = FREERDP_ADDIN_CLIENT;
+			pAddin->dwFlags |= FREERDP_ADDIN_DYNAMIC;
+			pAddin->dwFlags |= FREERDP_ADDIN_NAME;
+			pAddin->dwFlags |= FREERDP_ADDIN_SUBSYSTEM;
+			pAddin->dwFlags |= FREERDP_ADDIN_TYPE;
+			ppAddins[nAddins++] = pAddin;
+
+			used = TRUE;
+		}
+
+	skip:
+		free(cFileName);
+		if (!used)
+			free(pAddin);
+
+	} while (FindNextFileW(hFind, &FindData));
+
+	FindClose(hFind);
+	ppAddins[nAddins] = NULL;
+	return ppAddins;
+error_out:
+	FindClose(hFind);
+	freerdp_channels_addin_list_free(ppAddins);
+	return NULL;
+}
+
+FREERDP_ADDIN** freerdp_channels_list_addins(LPCSTR pszName, LPCSTR pszSubsystem, LPCSTR pszType,
+                                             DWORD dwFlags)
+{
+	if (dwFlags & FREERDP_ADDIN_STATIC)
+		return freerdp_channels_list_client_static_addins(pszName, pszSubsystem, pszType, dwFlags);
+	else if (dwFlags & FREERDP_ADDIN_DYNAMIC)
+		return freerdp_channels_list_dynamic_addins(pszName, pszSubsystem, pszType, dwFlags);
+
+	return NULL;
+}
+
+void freerdp_channels_addin_list_free(FREERDP_ADDIN** ppAddins)
+{
+	if (!ppAddins)
+		return;
+
+	for (size_t index = 0; ppAddins[index] != NULL; index++)
+		free(ppAddins[index]);
+
+	free((void*)ppAddins);
+}
+
+extern const STATIC_ENTRY CLIENT_VirtualChannelEntryEx_TABLE[];
+
+static BOOL freerdp_channels_is_virtual_channel_entry_ex(LPCSTR pszName)
+{
+	for (size_t i = 0; CLIENT_VirtualChannelEntryEx_TABLE[i].name != NULL; i++)
+	{
+		const STATIC_ENTRY* entry = &CLIENT_VirtualChannelEntryEx_TABLE[i];
+
+		if (!strncmp(entry->name, pszName, MAX_PATH))
+			return TRUE;
+	}
+
+	return FALSE;
+}
+
+PVIRTUALCHANNELENTRY freerdp_channels_load_static_addin_entry(LPCSTR pszName, LPCSTR pszSubsystem,
+                                                              LPCSTR pszType, DWORD dwFlags)
+{
+	const STATIC_ADDIN_TABLE* table = CLIENT_STATIC_ADDIN_TABLE;
+	const char* type = NULL;
+
+	if (!pszName)
+		return NULL;
+
+	if (dwFlags & FREERDP_ADDIN_CHANNEL_DYNAMIC)
+		type = "DVCPluginEntry";
+	else if (dwFlags & FREERDP_ADDIN_CHANNEL_DEVICE)
+		type = "DeviceServiceEntry";
+	else if (dwFlags & FREERDP_ADDIN_CHANNEL_STATIC)
+	{
+		if (dwFlags & FREERDP_ADDIN_CHANNEL_ENTRYEX)
+			type = "VirtualChannelEntryEx";
+		else
+			type = "VirtualChannelEntry";
+	}
+
+	for (; table->name != NULL; table++)
+	{
+		if (strncmp(table->name, pszName, MAX_PATH) == 0)
+		{
+			if (type && (strncmp(table->type, type, MAX_PATH) != 0))
+				continue;
+
+			if (pszSubsystem != NULL)
+			{
+				const STATIC_SUBSYSTEM_ENTRY* subsystems = table->table;
+
+				for (; subsystems->name != NULL; subsystems++)
+				{
+					/* If the pszSubsystem is an empty string use the default backend. */
+					if ((strnlen(pszSubsystem, 1) ==
+					     0) || /* we only want to know if strnlen is > 0 */
+					    (strncmp(subsystems->name, pszSubsystem, MAX_PATH) == 0))
+					{
+						static_subsystem_entry_fn_t fkt = subsystems->entry;
+
+						if (pszType)
+						{
+							if (strncmp(subsystems->type, pszType, MAX_PATH) == 0)
+								return WINPR_FUNC_PTR_CAST(fkt, PVIRTUALCHANNELENTRY);
+						}
+						else
+							return WINPR_FUNC_PTR_CAST(fkt, PVIRTUALCHANNELENTRY);
+					}
+				}
+			}
+			else
+			{
+				if (dwFlags & FREERDP_ADDIN_CHANNEL_ENTRYEX)
+				{
+					if (!freerdp_channels_is_virtual_channel_entry_ex(pszName))
+						return NULL;
+				}
+
+				return table->entry.csevc;
+			}
+		}
+	}
+
+	return NULL;
+}
+
+typedef struct
+{
+	wMessageQueue* queue;
+	wStream* data_in;
+	HANDLE thread;
+	char* channel_name;
+	rdpContext* ctx;
+	LPVOID userdata;
+	MsgHandler msg_handler;
+} msg_proc_internals;
+
+static DWORD WINAPI channel_client_thread_proc(LPVOID userdata)
+{
+	UINT error = CHANNEL_RC_OK;
+	wStream* data = NULL;
+	wMessage message = { 0 };
+	msg_proc_internals* internals = userdata;
+
+	WINPR_ASSERT(internals);
+
+	while (1)
+	{
+		if (!MessageQueue_Wait(internals->queue))
+		{
+			WLog_ERR(TAG, "MessageQueue_Wait failed!");
+			error = ERROR_INTERNAL_ERROR;
+			break;
+		}
+		if (!MessageQueue_Peek(internals->queue, &message, TRUE))
+		{
+			WLog_ERR(TAG, "MessageQueue_Peek failed!");
+			error = ERROR_INTERNAL_ERROR;
+			break;
+		}
+
+		if (message.id == WMQ_QUIT)
+			break;
+
+		if (message.id == 0)
+		{
+			data = (wStream*)message.wParam;
+
+			if ((error = internals->msg_handler(internals->userdata, data)))
+			{
+				WLog_ERR(TAG, "msg_handler failed with error %" PRIu32 "!", error);
+				break;
+			}
+		}
+	}
+	if (error && internals->ctx)
+	{
+		char msg[128];
+		(void)_snprintf(msg, 127,
+		                "%s_virtual_channel_client_thread reported an"
+		                " error",
+		                internals->channel_name);
+		setChannelError(internals->ctx, error, msg);
+	}
+	ExitThread(error);
+	return error;
+}
+
+static void free_msg(void* obj)
+{
+	wMessage* msg = (wMessage*)obj;
+
+	if (msg && (msg->id == 0))
+	{
+		wStream* s = (wStream*)msg->wParam;
+		Stream_Free(s, TRUE);
+	}
+}
+
+static void channel_client_handler_free(msg_proc_internals* internals)
+{
+	if (!internals)
+		return;
+
+	if (internals->thread)
+		(void)CloseHandle(internals->thread);
+	MessageQueue_Free(internals->queue);
+	Stream_Free(internals->data_in, TRUE);
+	free(internals->channel_name);
+	free(internals);
+}
+
+/*  Create message queue and thread or not, depending on settings */
+void* channel_client_create_handler(rdpContext* ctx, LPVOID userdata, MsgHandler msg_handler,
+                                    const char* channel_name)
+{
+	msg_proc_internals* internals = calloc(1, sizeof(msg_proc_internals));
+	if (!internals)
+	{
+		WLog_ERR(TAG, "calloc failed!");
+		return NULL;
+	}
+	internals->msg_handler = msg_handler;
+	internals->userdata = userdata;
+	if (channel_name)
+	{
+		internals->channel_name = _strdup(channel_name);
+		if (!internals->channel_name)
+			goto fail;
+	}
+	WINPR_ASSERT(ctx);
+	WINPR_ASSERT(ctx->settings);
+	internals->ctx = ctx;
+	if ((freerdp_settings_get_uint32(ctx->settings, FreeRDP_ThreadingFlags) &
+	     THREADING_FLAGS_DISABLE_THREADS) == 0)
+	{
+		wObject obj = { 0 };
+		obj.fnObjectFree = free_msg;
+		internals->queue = MessageQueue_New(&obj);
+		if (!internals->queue)
+		{
+			WLog_ERR(TAG, "MessageQueue_New failed!");
+			goto fail;
+		}
+
+		if (!(internals->thread =
+		          CreateThread(NULL, 0, channel_client_thread_proc, (void*)internals, 0, NULL)))
+		{
+			WLog_ERR(TAG, "CreateThread failed!");
+			goto fail;
+		}
+	}
+	return internals;
+
+fail:
+	channel_client_handler_free(internals);
+	return NULL;
+}
+/* post a message in the queue or directly call the processing handler */
+UINT channel_client_post_message(void* MsgsHandle, LPVOID pData, UINT32 dataLength,
+                                 UINT32 totalLength, UINT32 dataFlags)
+{
+	msg_proc_internals* internals = MsgsHandle;
+	wStream* data_in = NULL;
+
+	if (!internals)
+	{
+		/* TODO: return some error here */
+		return CHANNEL_RC_OK;
+	}
+
+	if ((dataFlags & CHANNEL_FLAG_SUSPEND) || (dataFlags & CHANNEL_FLAG_RESUME))
+	{
+		return CHANNEL_RC_OK;
+	}
+
+	if (dataFlags & CHANNEL_FLAG_FIRST)
+	{
+		if (internals->data_in)
+		{
+			if (!Stream_EnsureCapacity(internals->data_in, totalLength))
+				return CHANNEL_RC_NO_MEMORY;
+		}
+		else
+			internals->data_in = Stream_New(NULL, totalLength);
+	}
+
+	if (!(data_in = internals->data_in))
+	{
+		WLog_ERR(TAG, "Stream_New failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	if (!Stream_EnsureRemainingCapacity(data_in, dataLength))
+	{
+		Stream_Free(internals->data_in, TRUE);
+		internals->data_in = NULL;
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	Stream_Write(data_in, pData, dataLength);
+
+	if (dataFlags & CHANNEL_FLAG_LAST)
+	{
+		if (Stream_Capacity(data_in) != Stream_GetPosition(data_in))
+		{
+			char msg[128];
+			(void)_snprintf(msg, 127, "%s_plugin_process_received: read error",
+			                internals->channel_name);
+			WLog_ERR(TAG, msg);
+			return ERROR_INTERNAL_ERROR;
+		}
+
+		internals->data_in = NULL;
+		Stream_SealLength(data_in);
+		Stream_SetPosition(data_in, 0);
+
+		if ((freerdp_settings_get_uint32(internals->ctx->settings, FreeRDP_ThreadingFlags) &
+		     THREADING_FLAGS_DISABLE_THREADS) != 0)
+		{
+			UINT error = CHANNEL_RC_OK;
+			if ((error = internals->msg_handler(internals->userdata, data_in)))
+			{
+				WLog_ERR(TAG,
+				         "msg_handler failed with error"
+				         " %" PRIu32 "!",
+				         error);
+				return ERROR_INTERNAL_ERROR;
+			}
+		}
+		else if (!MessageQueue_Post(internals->queue, NULL, 0, (void*)data_in, NULL))
+		{
+			WLog_ERR(TAG, "MessageQueue_Post failed!");
+			return ERROR_INTERNAL_ERROR;
+		}
+	}
+	return CHANNEL_RC_OK;
+}
+/* Tear down queue and thread */
+UINT channel_client_quit_handler(void* MsgsHandle)
+{
+	msg_proc_internals* internals = MsgsHandle;
+	UINT rc = 0;
+	if (!internals)
+	{
+		/* TODO: return some error here */
+		return CHANNEL_RC_OK;
+	}
+
+	WINPR_ASSERT(internals->ctx);
+	WINPR_ASSERT(internals->ctx->settings);
+
+	if ((freerdp_settings_get_uint32(internals->ctx->settings, FreeRDP_ThreadingFlags) &
+	     THREADING_FLAGS_DISABLE_THREADS) == 0)
+	{
+		if (internals->queue && internals->thread)
+		{
+			if (MessageQueue_PostQuit(internals->queue, 0) &&
+			    (WaitForSingleObject(internals->thread, INFINITE) == WAIT_FAILED))
+			{
+				rc = GetLastError();
+				WLog_ERR(TAG, "WaitForSingleObject failed with error %" PRIu32 "", rc);
+				return rc;
+			}
+		}
+	}
+
+	channel_client_handler_free(internals);
+	return CHANNEL_RC_OK;
+}

local-test-freerdp-delta-01/afc-freerdp/channels/client/addin.h

@@ -0,0 +1,28 @@
+/*
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Channel Addins
+ *
+ * Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+typedef UINT (*MsgHandler)(LPVOID userdata, wStream* data);
+
+FREERDP_API void* channel_client_create_handler(rdpContext* ctx, LPVOID userdata,
+                                                MsgHandler handler, const char* channel_name);
+
+UINT channel_client_post_message(void* MsgsHandle, LPVOID pData, UINT32 dataLength,
+                                 UINT32 totalLength, UINT32 dataFlags);
+
+UINT channel_client_quit_handler(void* MsgsHandle);

local-test-freerdp-delta-01/afc-freerdp/channels/client/generic_dynvc.c

@@ -0,0 +1,214 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Dynamic channel
+ *
+ * Copyright 2022 David Fort <contact@hardening-consulting.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/config.h>
+#include <freerdp/log.h>
+#include <freerdp/client/channels.h>
+
+#define TAG FREERDP_TAG("genericdynvc")
+
+static UINT generic_on_new_channel_connection(IWTSListenerCallback* pListenerCallback,
+                                              IWTSVirtualChannel* pChannel, BYTE* Data,
+                                              BOOL* pbAccept,
+                                              IWTSVirtualChannelCallback** ppCallback)
+{
+	GENERIC_CHANNEL_CALLBACK* callback = NULL;
+	GENERIC_DYNVC_PLUGIN* plugin = NULL;
+	GENERIC_LISTENER_CALLBACK* listener_callback = (GENERIC_LISTENER_CALLBACK*)pListenerCallback;
+
+	if (!listener_callback || !listener_callback->plugin)
+		return ERROR_INTERNAL_ERROR;
+
+	plugin = (GENERIC_DYNVC_PLUGIN*)listener_callback->plugin;
+	WLog_Print(plugin->log, WLOG_TRACE, "...");
+
+	callback = (GENERIC_CHANNEL_CALLBACK*)calloc(1, plugin->channelCallbackSize);
+	if (!callback)
+	{
+		WLog_Print(plugin->log, WLOG_ERROR, "calloc failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	/* implant configured channel callbacks */
+	callback->iface = *plugin->channel_callbacks;
+
+	callback->plugin = listener_callback->plugin;
+	callback->channel_mgr = listener_callback->channel_mgr;
+	callback->channel = pChannel;
+
+	listener_callback->channel_callback = callback;
+	listener_callback->channel = pChannel;
+
+	*ppCallback = (IWTSVirtualChannelCallback*)callback;
+	return CHANNEL_RC_OK;
+}
+
+static UINT generic_dynvc_plugin_initialize(IWTSPlugin* pPlugin,
+                                            IWTSVirtualChannelManager* pChannelMgr)
+{
+	UINT rc = 0;
+	GENERIC_LISTENER_CALLBACK* listener_callback = NULL;
+	GENERIC_DYNVC_PLUGIN* plugin = (GENERIC_DYNVC_PLUGIN*)pPlugin;
+
+	if (!plugin)
+		return CHANNEL_RC_BAD_CHANNEL_HANDLE;
+
+	if (!pChannelMgr)
+		return ERROR_INVALID_PARAMETER;
+
+	if (plugin->initialized)
+	{
+		WLog_ERR(TAG, "[%s] channel initialized twice, aborting", plugin->dynvc_name);
+		return ERROR_INVALID_DATA;
+	}
+
+	WLog_Print(plugin->log, WLOG_TRACE, "...");
+	listener_callback = (GENERIC_LISTENER_CALLBACK*)calloc(1, sizeof(GENERIC_LISTENER_CALLBACK));
+	if (!listener_callback)
+	{
+		WLog_Print(plugin->log, WLOG_ERROR, "calloc failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	plugin->listener_callback = listener_callback;
+	listener_callback->iface.OnNewChannelConnection = generic_on_new_channel_connection;
+	listener_callback->plugin = pPlugin;
+	listener_callback->channel_mgr = pChannelMgr;
+	rc = pChannelMgr->CreateListener(pChannelMgr, plugin->dynvc_name, 0, &listener_callback->iface,
+	                                 &plugin->listener);
+
+	plugin->listener->pInterface = plugin->iface.pInterface;
+	plugin->initialized = (rc == CHANNEL_RC_OK);
+	return rc;
+}
+
+static UINT generic_plugin_terminated(IWTSPlugin* pPlugin)
+{
+	GENERIC_DYNVC_PLUGIN* plugin = (GENERIC_DYNVC_PLUGIN*)pPlugin;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!plugin)
+		return CHANNEL_RC_BAD_CHANNEL_HANDLE;
+
+	WLog_Print(plugin->log, WLOG_TRACE, "...");
+
+	/* some channels (namely rdpei), look at initialized to see if they should continue to run */
+	plugin->initialized = FALSE;
+
+	if (plugin->terminatePluginFn)
+		plugin->terminatePluginFn(plugin);
+
+	if (plugin->listener_callback)
+	{
+		IWTSVirtualChannelManager* mgr = plugin->listener_callback->channel_mgr;
+		if (mgr)
+			IFCALL(mgr->DestroyListener, mgr, plugin->listener);
+	}
+
+	free(plugin->listener_callback);
+	free(plugin->dynvc_name);
+	free(plugin);
+	return error;
+}
+
+static UINT generic_dynvc_plugin_attached(IWTSPlugin* pPlugin)
+{
+	GENERIC_DYNVC_PLUGIN* pluginn = (GENERIC_DYNVC_PLUGIN*)pPlugin;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!pluginn)
+		return CHANNEL_RC_BAD_CHANNEL_HANDLE;
+
+	pluginn->attached = TRUE;
+	return error;
+}
+
+static UINT generic_dynvc_plugin_detached(IWTSPlugin* pPlugin)
+{
+	GENERIC_DYNVC_PLUGIN* plugin = (GENERIC_DYNVC_PLUGIN*)pPlugin;
+	UINT error = CHANNEL_RC_OK;
+
+	if (!plugin)
+		return CHANNEL_RC_BAD_CHANNEL_HANDLE;
+
+	plugin->attached = FALSE;
+	return error;
+}
+
+UINT freerdp_generic_DVCPluginEntry(IDRDYNVC_ENTRY_POINTS* pEntryPoints, const char* logTag,
+                                    const char* name, size_t pluginSize, size_t channelCallbackSize,
+                                    const IWTSVirtualChannelCallback* channel_callbacks,
+                                    DYNVC_PLUGIN_INIT_FN initPluginFn,
+                                    DYNVC_PLUGIN_TERMINATE_FN terminatePluginFn)
+{
+	GENERIC_DYNVC_PLUGIN* plugin = NULL;
+	UINT error = CHANNEL_RC_INITIALIZATION_ERROR;
+
+	WINPR_ASSERT(pEntryPoints);
+	WINPR_ASSERT(pEntryPoints->GetPlugin);
+	WINPR_ASSERT(logTag);
+	WINPR_ASSERT(name);
+	WINPR_ASSERT(pluginSize >= sizeof(*plugin));
+	WINPR_ASSERT(channelCallbackSize >= sizeof(GENERIC_CHANNEL_CALLBACK));
+
+	plugin = (GENERIC_DYNVC_PLUGIN*)pEntryPoints->GetPlugin(pEntryPoints, name);
+	if (plugin != NULL)
+		return CHANNEL_RC_ALREADY_INITIALIZED;
+
+	plugin = (GENERIC_DYNVC_PLUGIN*)calloc(1, pluginSize);
+	if (!plugin)
+	{
+		WLog_ERR(TAG, "calloc failed!");
+		return CHANNEL_RC_NO_MEMORY;
+	}
+
+	plugin->log = WLog_Get(logTag);
+	plugin->attached = TRUE;
+	plugin->channel_callbacks = channel_callbacks;
+	plugin->channelCallbackSize = channelCallbackSize;
+	plugin->iface.Initialize = generic_dynvc_plugin_initialize;
+	plugin->iface.Connected = NULL;
+	plugin->iface.Disconnected = NULL;
+	plugin->iface.Terminated = generic_plugin_terminated;
+	plugin->iface.Attached = generic_dynvc_plugin_attached;
+	plugin->iface.Detached = generic_dynvc_plugin_detached;
+	plugin->terminatePluginFn = terminatePluginFn;
+
+	if (initPluginFn)
+	{
+		rdpSettings* settings = pEntryPoints->GetRdpSettings(pEntryPoints);
+		rdpContext* context = pEntryPoints->GetRdpContext(pEntryPoints);
+
+		error = initPluginFn(plugin, context, settings);
+		if (error != CHANNEL_RC_OK)
+			goto error;
+	}
+
+	plugin->dynvc_name = _strdup(name);
+	if (!plugin->dynvc_name)
+		goto error;
+
+	error = pEntryPoints->RegisterPlugin(pEntryPoints, name, &plugin->iface);
+	if (error == CHANNEL_RC_OK)
+		return error;
+
+error:
+	generic_plugin_terminated(&plugin->iface);
+	return error;
+}

local-test-freerdp-delta-01/afc-freerdp/channels/client/tables.c.in

@@ -0,0 +1,33 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Static Entry Point Tables
+ *
+ * Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+ * Copyright 2015 Thincast Technologies GmbH
+ * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/dvc.h>
+#include <freerdp/channels/rdpdr.h>
+#include "tables.h"
+
+${CLIENT_STATIC_TYPEDEFS}
+${CLIENT_STATIC_ENTRY_IMPORTS}
+${CLIENT_STATIC_SUBSYSTEM_IMPORTS}
+${CLIENT_STATIC_ENTRY_TABLES}
+${CLIENT_STATIC_ENTRY_TABLES_LIST}
+${CLIENT_STATIC_SUBSYSTEM_TABLES}
+${CLIENT_STATIC_ADDIN_TABLE}
+

local-test-freerdp-delta-01/afc-freerdp/channels/client/tables.h

@@ -0,0 +1,105 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Static Entry Point Tables
+ *
+ * Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <winpr/platform.h>
+#include <winpr/wtsapi.h>
+#include <freerdp/svc.h>
+#include <freerdp/dvc.h>
+#include <freerdp/channels/rdpdr.h>
+
+/* The 'entry' function pointers have variable arguments. */
+WINPR_PRAGMA_DIAG_PUSH
+WINPR_PRAGMA_DIAG_IGNORED_STRICT_PROTOTYPES
+
+typedef UINT(VCAPITYPE* static_entry_fn_t)();
+typedef struct
+{
+	const char* name;
+	static_entry_fn_t entry;
+} STATIC_ENTRY;
+
+typedef BOOL(VCAPITYPE* static_entry_vc_fn_t)(PCHANNEL_ENTRY_POINTS);
+typedef struct
+{
+	const char* name;
+	static_entry_vc_fn_t entry;
+} STATIC_ENTRY_VC;
+
+typedef BOOL(VCAPITYPE* static_entry_vcex_fn_t)(PCHANNEL_ENTRY_POINTS, PVOID);
+typedef struct
+{
+	const char* name;
+	static_entry_vcex_fn_t entry;
+} STATIC_ENTRY_VCEX;
+
+typedef UINT(VCAPITYPE* static_entry_dvc_fn_t)(IDRDYNVC_ENTRY_POINTS*);
+typedef struct
+{
+	const char* name;
+	static_entry_dvc_fn_t entry;
+} STATIC_ENTRY_DVC;
+
+typedef UINT(VCAPITYPE* static_entry_dse_fn_t)(PDEVICE_SERVICE_ENTRY_POINTS);
+typedef struct
+{
+	const char* name;
+	static_entry_dse_fn_t entry;
+} STATIC_ENTRY_DSE;
+
+typedef union
+{
+	const STATIC_ENTRY* cse;
+	const STATIC_ENTRY_VC* csevc;
+	const STATIC_ENTRY_VCEX* csevcex;
+	const STATIC_ENTRY_DVC* csedvc;
+	const STATIC_ENTRY_DSE* csedse;
+} static_entry_u;
+
+typedef union
+{
+	static_entry_fn_t cse;
+	static_entry_vc_fn_t csevc;
+	static_entry_vcex_fn_t csevcex;
+	static_entry_dvc_fn_t csedvc;
+	static_entry_dse_fn_t csedse;
+} static_entry_fn_u;
+
+typedef struct
+{
+	const char* name;
+	static_entry_u table;
+} STATIC_ENTRY_TABLE;
+
+typedef UINT(VCAPITYPE* static_subsystem_entry_fn_t)(void*);
+typedef struct
+{
+	const char* name;
+	const char* type;
+	static_subsystem_entry_fn_t entry;
+} STATIC_SUBSYSTEM_ENTRY;
+
+typedef struct
+{
+	const char* name;
+	const char* type;
+	static_entry_fn_u entry;
+	const STATIC_SUBSYSTEM_ENTRY* table;
+} STATIC_ADDIN_TABLE;
+
+WINPR_PRAGMA_DIAG_POP

local-test-freerdp-delta-01/afc-freerdp/channels/cliprdr/CMakeLists.txt

@@ -0,0 +1,26 @@
+# FreeRDP: A Remote Desktop Protocol Implementation
+# FreeRDP cmake build script
+#
+# Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+define_channel("cliprdr")
+
+if(WITH_CLIENT_CHANNELS)
+  add_channel_client(${MODULE_PREFIX} ${CHANNEL_NAME})
+endif()
+
+if(WITH_SERVER_CHANNELS)
+  add_channel_server(${MODULE_PREFIX} ${CHANNEL_NAME})
+endif()

local-test-freerdp-delta-01/afc-freerdp/channels/cliprdr/ChannelOptions.cmake

@@ -0,0 +1,20 @@
+set(OPTION_DEFAULT ON)
+set(OPTION_CLIENT_DEFAULT ON)
+set(OPTION_SERVER_DEFAULT ON)
+
+define_channel_options(
+  NAME
+  "cliprdr"
+  TYPE
+  "static"
+  DESCRIPTION
+  "Clipboard Virtual Channel Extension"
+  SPECIFICATIONS
+  "[MS-RDPECLIP]"
+  DEFAULT
+  ${OPTION_DEFAULT}
+  CLIENT_DEFAULT
+  ${OPTION_CLIENT_DEFAULT}
+  SERVER_DEFAULT
+  ${OPTION_SERVER_DEFAULT}
+)

local-test-freerdp-delta-01/afc-freerdp/channels/cliprdr/client/CMakeLists.txt

@@ -0,0 +1,25 @@
+# FreeRDP: A Remote Desktop Protocol Implementation
+# FreeRDP cmake build script
+#
+# Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+define_channel_client("cliprdr")
+
+set(${MODULE_PREFIX}_SRCS cliprdr_format.c cliprdr_format.h cliprdr_main.c cliprdr_main.h ../cliprdr_common.h
+                          ../cliprdr_common.c
+)
+
+set(${MODULE_PREFIX}_LIBS winpr freerdp)
+add_channel_client_library(${MODULE_PREFIX} ${MODULE_NAME} ${CHANNEL_NAME} FALSE "VirtualChannelEntryEx")

local-test-freerdp-delta-01/afc-freerdp/channels/cliprdr/client/cliprdr_format.c

@@ -0,0 +1,244 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Clipboard Virtual Channel
+ *
+ * Copyright 2009-2011 Jay Sorg
+ * Copyright 2010-2011 Vic Lee
+ * Copyright 2015 Thincast Technologies GmbH
+ * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/config.h>
+
+#include <winpr/crt.h>
+#include <winpr/print.h>
+
+#include <freerdp/types.h>
+#include <freerdp/freerdp.h>
+#include <freerdp/settings.h>
+#include <freerdp/constants.h>
+#include <freerdp/client/cliprdr.h>
+
+#include "cliprdr_main.h"
+#include "cliprdr_format.h"
+#include "../cliprdr_common.h"
+
+CLIPRDR_FORMAT_LIST cliprdr_filter_format_list(const CLIPRDR_FORMAT_LIST* list, const UINT32 mask,
+                                               const UINT32 checkMask)
+{
+	const UINT32 maskData =
+	    checkMask & (CLIPRDR_FLAG_LOCAL_TO_REMOTE | CLIPRDR_FLAG_REMOTE_TO_LOCAL);
+	const UINT32 maskFiles =
+	    checkMask & (CLIPRDR_FLAG_LOCAL_TO_REMOTE_FILES | CLIPRDR_FLAG_REMOTE_TO_LOCAL_FILES);
+	WINPR_ASSERT(list);
+
+	CLIPRDR_FORMAT_LIST filtered = { 0 };
+	filtered.common.msgType = CB_FORMAT_LIST;
+	filtered.numFormats = list->numFormats;
+	filtered.formats = calloc(filtered.numFormats, sizeof(CLIPRDR_FORMAT));
+
+	size_t wpos = 0;
+	if ((mask & checkMask) == checkMask)
+	{
+		for (size_t x = 0; x < list->numFormats; x++)
+		{
+			const CLIPRDR_FORMAT* format = &list->formats[x];
+			CLIPRDR_FORMAT* cur = &filtered.formats[x];
+			cur->formatId = format->formatId;
+			if (format->formatName)
+				cur->formatName = _strdup(format->formatName);
+			wpos++;
+		}
+	}
+	else if ((mask & maskFiles) != 0)
+	{
+		for (size_t x = 0; x < list->numFormats; x++)
+		{
+			const CLIPRDR_FORMAT* format = &list->formats[x];
+			CLIPRDR_FORMAT* cur = &filtered.formats[wpos];
+
+			if (!format->formatName)
+				continue;
+			if (strcmp(format->formatName, type_FileGroupDescriptorW) == 0 ||
+			    strcmp(format->formatName, type_FileContents) == 0)
+			{
+				cur->formatId = format->formatId;
+				cur->formatName = _strdup(format->formatName);
+				wpos++;
+			}
+		}
+	}
+	else if ((mask & maskData) != 0)
+	{
+		for (size_t x = 0; x < list->numFormats; x++)
+		{
+			const CLIPRDR_FORMAT* format = &list->formats[x];
+			CLIPRDR_FORMAT* cur = &filtered.formats[wpos];
+
+			if (!format->formatName ||
+			    (strcmp(format->formatName, type_FileGroupDescriptorW) != 0 &&
+			     strcmp(format->formatName, type_FileContents) != 0))
+			{
+				cur->formatId = format->formatId;
+				if (format->formatName)
+					cur->formatName = _strdup(format->formatName);
+				wpos++;
+			}
+		}
+	}
+	WINPR_ASSERT(wpos <= UINT32_MAX);
+	filtered.numFormats = (UINT32)wpos;
+	return filtered;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+UINT cliprdr_process_format_list(cliprdrPlugin* cliprdr, wStream* s, UINT32 dataLen,
+                                 UINT16 msgFlags)
+{
+	CLIPRDR_FORMAT_LIST formatList = { 0 };
+	CLIPRDR_FORMAT_LIST filteredFormatList = { 0 };
+	CliprdrClientContext* context = cliprdr_get_client_interface(cliprdr);
+	UINT error = CHANNEL_RC_OK;
+
+	formatList.common.msgType = CB_FORMAT_LIST;
+	formatList.common.msgFlags = msgFlags;
+	formatList.common.dataLen = dataLen;
+
+	if ((error = cliprdr_read_format_list(s, &formatList, cliprdr->useLongFormatNames)))
+		goto error_out;
+
+	const UINT32 mask =
+	    freerdp_settings_get_uint32(context->rdpcontext->settings, FreeRDP_ClipboardFeatureMask);
+	filteredFormatList = cliprdr_filter_format_list(
+	    &formatList, mask, CLIPRDR_FLAG_REMOTE_TO_LOCAL | CLIPRDR_FLAG_REMOTE_TO_LOCAL_FILES);
+	if (filteredFormatList.numFormats == 0)
+		goto error_out;
+
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "ServerFormatList: numFormats: %" PRIu32 "",
+	           filteredFormatList.numFormats);
+
+	if (context->ServerFormatList)
+	{
+		if ((error = context->ServerFormatList(context, &filteredFormatList)))
+			WLog_ERR(TAG, "ServerFormatList failed with error %" PRIu32 "", error);
+	}
+
+error_out:
+	cliprdr_free_format_list(&filteredFormatList);
+	cliprdr_free_format_list(&formatList);
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+UINT cliprdr_process_format_list_response(cliprdrPlugin* cliprdr, wStream* s, UINT32 dataLen,
+                                          UINT16 msgFlags)
+{
+	CLIPRDR_FORMAT_LIST_RESPONSE formatListResponse = { 0 };
+	CliprdrClientContext* context = cliprdr_get_client_interface(cliprdr);
+	UINT error = CHANNEL_RC_OK;
+
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "ServerFormatListResponse");
+
+	formatListResponse.common.msgType = CB_FORMAT_LIST_RESPONSE;
+	formatListResponse.common.msgFlags = msgFlags;
+	formatListResponse.common.dataLen = dataLen;
+
+	IFCALLRET(context->ServerFormatListResponse, error, context, &formatListResponse);
+	if (error)
+		WLog_ERR(TAG, "ServerFormatListResponse failed with error %" PRIu32 "!", error);
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+UINT cliprdr_process_format_data_request(cliprdrPlugin* cliprdr, wStream* s, UINT32 dataLen,
+                                         UINT16 msgFlags)
+{
+	CLIPRDR_FORMAT_DATA_REQUEST formatDataRequest = { 0 };
+	CliprdrClientContext* context = cliprdr_get_client_interface(cliprdr);
+	UINT error = CHANNEL_RC_OK;
+
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "ServerFormatDataRequest");
+
+	formatDataRequest.common.msgType = CB_FORMAT_DATA_REQUEST;
+	formatDataRequest.common.msgFlags = msgFlags;
+	formatDataRequest.common.dataLen = dataLen;
+
+	if ((error = cliprdr_read_format_data_request(s, &formatDataRequest)))
+		return error;
+
+	const UINT32 mask =
+	    freerdp_settings_get_uint32(context->rdpcontext->settings, FreeRDP_ClipboardFeatureMask);
+	if ((mask & (CLIPRDR_FLAG_LOCAL_TO_REMOTE | CLIPRDR_FLAG_LOCAL_TO_REMOTE_FILES)) == 0)
+	{
+		return cliprdr_send_error_response(cliprdr, CB_FORMAT_DATA_RESPONSE);
+	}
+
+	context->lastRequestedFormatId = formatDataRequest.requestedFormatId;
+	IFCALLRET(context->ServerFormatDataRequest, error, context, &formatDataRequest);
+	if (error)
+		WLog_ERR(TAG, "ServerFormatDataRequest failed with error %" PRIu32 "!", error);
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+UINT cliprdr_process_format_data_response(cliprdrPlugin* cliprdr, wStream* s, UINT32 dataLen,
+                                          UINT16 msgFlags)
+{
+	CLIPRDR_FORMAT_DATA_RESPONSE formatDataResponse = { 0 };
+	CliprdrClientContext* context = cliprdr_get_client_interface(cliprdr);
+	UINT error = CHANNEL_RC_OK;
+
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "ServerFormatDataResponse");
+
+	formatDataResponse.common.msgType = CB_FORMAT_DATA_RESPONSE;
+	formatDataResponse.common.msgFlags = msgFlags;
+	formatDataResponse.common.dataLen = dataLen;
+
+	if ((error = cliprdr_read_format_data_response(s, &formatDataResponse)))
+		return error;
+
+	const UINT32 mask =
+	    freerdp_settings_get_uint32(context->rdpcontext->settings, FreeRDP_ClipboardFeatureMask);
+	if ((mask & (CLIPRDR_FLAG_REMOTE_TO_LOCAL | CLIPRDR_FLAG_REMOTE_TO_LOCAL_FILES)) == 0)
+	{
+		WLog_WARN(TAG,
+		          "Received ServerFormatDataResponse but remote -> local clipboard is disabled");
+		return CHANNEL_RC_OK;
+	}
+
+	IFCALLRET(context->ServerFormatDataResponse, error, context, &formatDataResponse);
+	if (error)
+		WLog_ERR(TAG, "ServerFormatDataResponse failed with error %" PRIu32 "!", error);
+
+	return error;
+}

local-test-freerdp-delta-01/afc-freerdp/channels/cliprdr/client/cliprdr_format.h

@@ -0,0 +1,37 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Clipboard Virtual Channel
+ *
+ * Copyright 2009-2011 Jay Sorg
+ * Copyright 2010-2011 Vic Lee
+ * Copyright 2015 Thincast Technologies GmbH
+ * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FREERDP_CHANNEL_CLIPRDR_CLIENT_FORMAT_H
+#define FREERDP_CHANNEL_CLIPRDR_CLIENT_FORMAT_H
+
+UINT cliprdr_process_format_list(cliprdrPlugin* cliprdr, wStream* s, UINT32 dataLen,
+                                 UINT16 msgFlags);
+UINT cliprdr_process_format_list_response(cliprdrPlugin* cliprdr, wStream* s, UINT32 dataLen,
+                                          UINT16 msgFlags);
+UINT cliprdr_process_format_data_request(cliprdrPlugin* cliprdr, wStream* s, UINT32 dataLen,
+                                         UINT16 msgFlags);
+UINT cliprdr_process_format_data_response(cliprdrPlugin* cliprdr, wStream* s, UINT32 dataLen,
+                                          UINT16 msgFlags);
+CLIPRDR_FORMAT_LIST cliprdr_filter_format_list(const CLIPRDR_FORMAT_LIST* list, const UINT32 mask,
+                                               const UINT32 checkMask);
+
+#endif /* FREERDP_CHANNEL_CLIPRDR_CLIENT_FORMAT_H */

local-test-freerdp-delta-01/afc-freerdp/channels/cliprdr/client/cliprdr_main.c

@@ -0,0 +1,1174 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Clipboard Virtual Channel
+ *
+ * Copyright 2009-2011 Jay Sorg
+ * Copyright 2010-2011 Vic Lee
+ * Copyright 2015 Thincast Technologies GmbH
+ * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/config.h>
+
+#include <winpr/wtypes.h>
+#include <winpr/assert.h>
+#include <winpr/crt.h>
+#include <winpr/print.h>
+
+#include <freerdp/types.h>
+#include <freerdp/constants.h>
+#include <freerdp/freerdp.h>
+#include <freerdp/client/cliprdr.h>
+
+#include "../../../channels/client/addin.h"
+
+#include "cliprdr_main.h"
+#include "cliprdr_format.h"
+#include "../cliprdr_common.h"
+
+const char type_FileGroupDescriptorW[] = "FileGroupDescriptorW";
+const char type_FileContents[] = "FileContents";
+
+CliprdrClientContext* cliprdr_get_client_interface(cliprdrPlugin* cliprdr)
+{
+	CliprdrClientContext* pInterface = NULL;
+
+	if (!cliprdr)
+		return NULL;
+
+	pInterface = (CliprdrClientContext*)cliprdr->channelEntryPoints.pInterface;
+	return pInterface;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT cliprdr_packet_send(cliprdrPlugin* cliprdr, wStream* s)
+{
+	UINT status = CHANNEL_RC_OK;
+
+	WINPR_ASSERT(cliprdr);
+	WINPR_ASSERT(s);
+
+	const size_t pos = Stream_GetPosition(s);
+	const size_t dataLen = pos - 8;
+	WINPR_ASSERT(dataLen <= UINT32_MAX);
+
+	Stream_SetPosition(s, 4);
+	Stream_Write_UINT32(s, (UINT32)dataLen);
+	Stream_SetPosition(s, pos);
+
+	WLog_DBG(TAG, "Cliprdr Sending (%" PRIu32 " bytes)", dataLen + 8);
+
+	if (!cliprdr)
+	{
+		status = CHANNEL_RC_BAD_INIT_HANDLE;
+	}
+	else
+	{
+		WINPR_ASSERT(cliprdr->channelEntryPoints.pVirtualChannelWriteEx);
+		status = cliprdr->channelEntryPoints.pVirtualChannelWriteEx(
+		    cliprdr->InitHandle, cliprdr->OpenHandle, Stream_Buffer(s),
+		    (UINT32)Stream_GetPosition(s), s);
+	}
+
+	if (status != CHANNEL_RC_OK)
+	{
+		Stream_Free(s, TRUE);
+		WLog_ERR(TAG, "VirtualChannelWrite failed with %s [%08" PRIX32 "]",
+		         WTSErrorToString(status), status);
+	}
+
+	return status;
+}
+
+UINT cliprdr_send_error_response(cliprdrPlugin* cliprdr, UINT16 type)
+{
+	wStream* s = cliprdr_packet_new(type, CB_RESPONSE_FAIL, 0);
+	if (!s)
+	{
+		WLog_ERR(TAG, "cliprdr_packet_new failed!");
+		return ERROR_OUTOFMEMORY;
+	}
+
+	return cliprdr_packet_send(cliprdr, s);
+}
+
+static void cliprdr_print_general_capability_flags(UINT32 flags)
+{
+	WLog_DBG(TAG, "generalFlags (0x%08" PRIX32 ") {", flags);
+
+	if (flags & CB_USE_LONG_FORMAT_NAMES)
+		WLog_DBG(TAG, "\tCB_USE_LONG_FORMAT_NAMES");
+
+	if (flags & CB_STREAM_FILECLIP_ENABLED)
+		WLog_DBG(TAG, "\tCB_STREAM_FILECLIP_ENABLED");
+
+	if (flags & CB_FILECLIP_NO_FILE_PATHS)
+		WLog_DBG(TAG, "\tCB_FILECLIP_NO_FILE_PATHS");
+
+	if (flags & CB_CAN_LOCK_CLIPDATA)
+		WLog_DBG(TAG, "\tCB_CAN_LOCK_CLIPDATA");
+
+	if (flags & CB_HUGE_FILE_SUPPORT_ENABLED)
+		WLog_DBG(TAG, "\tCB_HUGE_FILE_SUPPORT_ENABLED");
+
+	WLog_DBG(TAG, "}");
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT cliprdr_process_general_capability(cliprdrPlugin* cliprdr, wStream* s)
+{
+	UINT32 version = 0;
+	UINT32 generalFlags = 0;
+	CLIPRDR_CAPABILITIES capabilities = { 0 };
+	CLIPRDR_GENERAL_CAPABILITY_SET generalCapabilitySet = { 0 };
+	CliprdrClientContext* context = cliprdr_get_client_interface(cliprdr);
+	UINT error = CHANNEL_RC_OK;
+
+	WINPR_ASSERT(cliprdr);
+	WINPR_ASSERT(s);
+
+	if (!context)
+	{
+		WLog_ERR(TAG, "cliprdr_get_client_interface failed!");
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 8))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT32(s, version);      /* version (4 bytes) */
+	Stream_Read_UINT32(s, generalFlags); /* generalFlags (4 bytes) */
+	WLog_DBG(TAG, "Version: %" PRIu32 "", version);
+
+	cliprdr_print_general_capability_flags(generalFlags);
+
+	cliprdr->useLongFormatNames = (generalFlags & CB_USE_LONG_FORMAT_NAMES) ? TRUE : FALSE;
+	cliprdr->streamFileClipEnabled = (generalFlags & CB_STREAM_FILECLIP_ENABLED) ? TRUE : FALSE;
+	cliprdr->fileClipNoFilePaths = (generalFlags & CB_FILECLIP_NO_FILE_PATHS) ? TRUE : FALSE;
+	cliprdr->canLockClipData = (generalFlags & CB_CAN_LOCK_CLIPDATA) ? TRUE : FALSE;
+	cliprdr->hasHugeFileSupport = (generalFlags & CB_HUGE_FILE_SUPPORT_ENABLED) ? TRUE : FALSE;
+	cliprdr->capabilitiesReceived = TRUE;
+
+	capabilities.common.msgType = CB_CLIP_CAPS;
+	capabilities.cCapabilitiesSets = 1;
+	capabilities.capabilitySets = (CLIPRDR_CAPABILITY_SET*)&(generalCapabilitySet);
+	generalCapabilitySet.capabilitySetType = CB_CAPSTYPE_GENERAL;
+	generalCapabilitySet.capabilitySetLength = 12;
+	generalCapabilitySet.version = version;
+	generalCapabilitySet.generalFlags = generalFlags;
+	IFCALLRET(context->ServerCapabilities, error, context, &capabilities);
+
+	if (error)
+		WLog_ERR(TAG, "ServerCapabilities failed with error %" PRIu32 "!", error);
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT cliprdr_process_clip_caps(cliprdrPlugin* cliprdr, wStream* s, UINT32 length,
+                                      UINT16 flags)
+{
+	UINT16 lengthCapability = 0;
+	UINT16 cCapabilitiesSets = 0;
+	UINT16 capabilitySetType = 0;
+	UINT error = CHANNEL_RC_OK;
+
+	WINPR_ASSERT(cliprdr);
+	WINPR_ASSERT(s);
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 4))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT16(s, cCapabilitiesSets); /* cCapabilitiesSets (2 bytes) */
+	Stream_Seek_UINT16(s);                    /* pad1 (2 bytes) */
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "ServerCapabilities");
+
+	for (UINT16 index = 0; index < cCapabilitiesSets; index++)
+	{
+		if (!Stream_CheckAndLogRequiredLength(TAG, s, 4))
+			return ERROR_INVALID_DATA;
+
+		Stream_Read_UINT16(s, capabilitySetType); /* capabilitySetType (2 bytes) */
+		Stream_Read_UINT16(s, lengthCapability);  /* lengthCapability (2 bytes) */
+
+		if ((lengthCapability < 4) ||
+		    (!Stream_CheckAndLogRequiredLength(TAG, s, lengthCapability - 4U)))
+			return ERROR_INVALID_DATA;
+
+		switch (capabilitySetType)
+		{
+			case CB_CAPSTYPE_GENERAL:
+				if ((error = cliprdr_process_general_capability(cliprdr, s)))
+				{
+					WLog_ERR(TAG,
+					         "cliprdr_process_general_capability failed with error %" PRIu32 "!",
+					         error);
+					return error;
+				}
+
+				break;
+
+			default:
+				WLog_ERR(TAG, "unknown cliprdr capability set: %" PRIu16 "", capabilitySetType);
+				return CHANNEL_RC_BAD_PROC;
+		}
+	}
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT cliprdr_process_monitor_ready(cliprdrPlugin* cliprdr, wStream* s, UINT32 length,
+                                          UINT16 flags)
+{
+	CLIPRDR_MONITOR_READY monitorReady = { 0 };
+	CliprdrClientContext* context = cliprdr_get_client_interface(cliprdr);
+	UINT error = CHANNEL_RC_OK;
+
+	WINPR_ASSERT(cliprdr);
+	WINPR_ASSERT(s);
+
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "MonitorReady");
+
+	if (!cliprdr->capabilitiesReceived)
+	{
+		/**
+		 * The clipboard capabilities pdu from server to client is optional,
+		 * but a server using it must send it before sending the monitor ready pdu.
+		 * When the server capabilities pdu is not used, default capabilities
+		 * corresponding to a generalFlags field set to zero are assumed.
+		 */
+		cliprdr->useLongFormatNames = FALSE;
+		cliprdr->streamFileClipEnabled = FALSE;
+		cliprdr->fileClipNoFilePaths = TRUE;
+		cliprdr->canLockClipData = FALSE;
+	}
+
+	monitorReady.common.msgType = CB_MONITOR_READY;
+	monitorReady.common.msgFlags = flags;
+	monitorReady.common.dataLen = length;
+	IFCALLRET(context->MonitorReady, error, context, &monitorReady);
+
+	if (error)
+		WLog_ERR(TAG, "MonitorReady failed with error %" PRIu32 "!", error);
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT cliprdr_process_filecontents_request(cliprdrPlugin* cliprdr, wStream* s, UINT32 length,
+                                                 UINT16 flags)
+{
+	CLIPRDR_FILE_CONTENTS_REQUEST request = { 0 };
+	CliprdrClientContext* context = cliprdr_get_client_interface(cliprdr);
+	UINT error = CHANNEL_RC_OK;
+
+	WINPR_ASSERT(cliprdr);
+	WINPR_ASSERT(s);
+
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "FileContentsRequest");
+
+	request.common.msgType = CB_FILECONTENTS_REQUEST;
+	request.common.msgFlags = flags;
+	request.common.dataLen = length;
+
+	if ((error = cliprdr_read_file_contents_request(s, &request)))
+		return error;
+
+	const UINT32 mask =
+	    freerdp_settings_get_uint32(context->rdpcontext->settings, FreeRDP_ClipboardFeatureMask);
+	if ((mask & (CLIPRDR_FLAG_LOCAL_TO_REMOTE_FILES)) == 0)
+	{
+		WLog_WARN(TAG, "local -> remote file copy disabled, ignoring request");
+		return cliprdr_send_error_response(cliprdr, CB_FILECONTENTS_RESPONSE);
+	}
+	IFCALLRET(context->ServerFileContentsRequest, error, context, &request);
+
+	if (error)
+		WLog_ERR(TAG, "ServerFileContentsRequest failed with error %" PRIu32 "!", error);
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT cliprdr_process_filecontents_response(cliprdrPlugin* cliprdr, wStream* s, UINT32 length,
+                                                  UINT16 flags)
+{
+	CLIPRDR_FILE_CONTENTS_RESPONSE response = { 0 };
+	CliprdrClientContext* context = cliprdr_get_client_interface(cliprdr);
+	UINT error = CHANNEL_RC_OK;
+
+	WINPR_ASSERT(cliprdr);
+	WINPR_ASSERT(s);
+
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "FileContentsResponse");
+
+	response.common.msgType = CB_FILECONTENTS_RESPONSE;
+	response.common.msgFlags = flags;
+	response.common.dataLen = length;
+
+	if ((error = cliprdr_read_file_contents_response(s, &response)))
+		return error;
+
+	IFCALLRET(context->ServerFileContentsResponse, error, context, &response);
+
+	if (error)
+		WLog_ERR(TAG, "ServerFileContentsResponse failed with error %" PRIu32 "!", error);
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT cliprdr_process_lock_clipdata(cliprdrPlugin* cliprdr, wStream* s, UINT32 length,
+                                          UINT16 flags)
+{
+	CLIPRDR_LOCK_CLIPBOARD_DATA lockClipboardData = { 0 };
+	CliprdrClientContext* context = cliprdr_get_client_interface(cliprdr);
+	UINT error = CHANNEL_RC_OK;
+
+	WINPR_ASSERT(cliprdr);
+	WINPR_ASSERT(s);
+
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "LockClipData");
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 4))
+		return ERROR_INVALID_DATA;
+
+	lockClipboardData.common.msgType = CB_LOCK_CLIPDATA;
+	lockClipboardData.common.msgFlags = flags;
+	lockClipboardData.common.dataLen = length;
+	Stream_Read_UINT32(s, lockClipboardData.clipDataId); /* clipDataId (4 bytes) */
+	IFCALLRET(context->ServerLockClipboardData, error, context, &lockClipboardData);
+
+	if (error)
+		WLog_ERR(TAG, "ServerLockClipboardData failed with error %" PRIu32 "!", error);
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT cliprdr_process_unlock_clipdata(cliprdrPlugin* cliprdr, wStream* s, UINT32 length,
+                                            UINT16 flags)
+{
+	CLIPRDR_UNLOCK_CLIPBOARD_DATA unlockClipboardData = { 0 };
+	CliprdrClientContext* context = cliprdr_get_client_interface(cliprdr);
+	UINT error = CHANNEL_RC_OK;
+
+	WINPR_ASSERT(cliprdr);
+	WINPR_ASSERT(s);
+
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "UnlockClipData");
+
+	if ((error = cliprdr_read_unlock_clipdata(s, &unlockClipboardData)))
+		return error;
+
+	unlockClipboardData.common.msgType = CB_UNLOCK_CLIPDATA;
+	unlockClipboardData.common.msgFlags = flags;
+	unlockClipboardData.common.dataLen = length;
+
+	IFCALLRET(context->ServerUnlockClipboardData, error, context, &unlockClipboardData);
+
+	if (error)
+		WLog_ERR(TAG, "ServerUnlockClipboardData failed with error %" PRIu32 "!", error);
+
+	return error;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT cliprdr_order_recv(LPVOID userdata, wStream* s)
+{
+	cliprdrPlugin* cliprdr = userdata;
+	UINT16 msgType = 0;
+	UINT16 msgFlags = 0;
+	UINT32 dataLen = 0;
+	UINT error = 0;
+
+	WINPR_ASSERT(cliprdr);
+	WINPR_ASSERT(s);
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 8))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT16(s, msgType);  /* msgType (2 bytes) */
+	Stream_Read_UINT16(s, msgFlags); /* msgFlags (2 bytes) */
+	Stream_Read_UINT32(s, dataLen);  /* dataLen (4 bytes) */
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, dataLen))
+		return ERROR_INVALID_DATA;
+
+	char buffer1[64] = { 0 };
+	char buffer2[64] = { 0 };
+	WLog_DBG(TAG, "msgType: %s (%" PRIu16 "), msgFlags: %s dataLen: %" PRIu32 "",
+	         CB_MSG_TYPE_STRING(msgType, buffer1, sizeof(buffer1)), msgType,
+	         CB_MSG_FLAGS_STRING(msgFlags, buffer2, sizeof(buffer2)), dataLen);
+
+	switch (msgType)
+	{
+		case CB_CLIP_CAPS:
+			if ((error = cliprdr_process_clip_caps(cliprdr, s, dataLen, msgFlags)))
+				WLog_ERR(TAG, "cliprdr_process_clip_caps failed with error %" PRIu32 "!", error);
+
+			break;
+
+		case CB_MONITOR_READY:
+			if ((error = cliprdr_process_monitor_ready(cliprdr, s, dataLen, msgFlags)))
+				WLog_ERR(TAG, "cliprdr_process_monitor_ready failed with error %" PRIu32 "!",
+				         error);
+
+			break;
+
+		case CB_FORMAT_LIST:
+			if ((error = cliprdr_process_format_list(cliprdr, s, dataLen, msgFlags)))
+				WLog_ERR(TAG, "cliprdr_process_format_list failed with error %" PRIu32 "!", error);
+
+			break;
+
+		case CB_FORMAT_LIST_RESPONSE:
+			if ((error = cliprdr_process_format_list_response(cliprdr, s, dataLen, msgFlags)))
+				WLog_ERR(TAG, "cliprdr_process_format_list_response failed with error %" PRIu32 "!",
+				         error);
+
+			break;
+
+		case CB_FORMAT_DATA_REQUEST:
+			if ((error = cliprdr_process_format_data_request(cliprdr, s, dataLen, msgFlags)))
+				WLog_ERR(TAG, "cliprdr_process_format_data_request failed with error %" PRIu32 "!",
+				         error);
+
+			break;
+
+		case CB_FORMAT_DATA_RESPONSE:
+			if ((error = cliprdr_process_format_data_response(cliprdr, s, dataLen, msgFlags)))
+				WLog_ERR(TAG, "cliprdr_process_format_data_response failed with error %" PRIu32 "!",
+				         error);
+
+			break;
+
+		case CB_FILECONTENTS_REQUEST:
+			if ((error = cliprdr_process_filecontents_request(cliprdr, s, dataLen, msgFlags)))
+				WLog_ERR(TAG, "cliprdr_process_filecontents_request failed with error %" PRIu32 "!",
+				         error);
+
+			break;
+
+		case CB_FILECONTENTS_RESPONSE:
+			if ((error = cliprdr_process_filecontents_response(cliprdr, s, dataLen, msgFlags)))
+				WLog_ERR(TAG,
+				         "cliprdr_process_filecontents_response failed with error %" PRIu32 "!",
+				         error);
+
+			break;
+
+		case CB_LOCK_CLIPDATA:
+			if ((error = cliprdr_process_lock_clipdata(cliprdr, s, dataLen, msgFlags)))
+				WLog_ERR(TAG, "cliprdr_process_lock_clipdata failed with error %" PRIu32 "!",
+				         error);
+
+			break;
+
+		case CB_UNLOCK_CLIPDATA:
+			if ((error = cliprdr_process_unlock_clipdata(cliprdr, s, dataLen, msgFlags)))
+				WLog_ERR(TAG, "cliprdr_process_unlock_clipdata failed with error %" PRIu32 "!",
+				         error);
+
+			break;
+
+		default:
+			error = CHANNEL_RC_BAD_PROC;
+			WLog_ERR(TAG, "unknown msgType %" PRIu16 "", msgType);
+			break;
+	}
+
+	Stream_Free(s, TRUE);
+	return error;
+}
+
+/**
+ * Callback Interface
+ */
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT cliprdr_client_capabilities(CliprdrClientContext* context,
+                                        const CLIPRDR_CAPABILITIES* capabilities)
+{
+	wStream* s = NULL;
+	UINT32 flags = 0;
+	const CLIPRDR_GENERAL_CAPABILITY_SET* generalCapabilitySet = NULL;
+	cliprdrPlugin* cliprdr = NULL;
+
+	WINPR_ASSERT(context);
+
+	cliprdr = (cliprdrPlugin*)context->handle;
+	WINPR_ASSERT(cliprdr);
+
+	s = cliprdr_packet_new(CB_CLIP_CAPS, 0, 4 + CB_CAPSTYPE_GENERAL_LEN);
+
+	if (!s)
+	{
+		WLog_ERR(TAG, "cliprdr_packet_new failed!");
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	Stream_Write_UINT16(s, 1); /* cCapabilitiesSets */
+	Stream_Write_UINT16(s, 0); /* pad1 */
+	generalCapabilitySet = (const CLIPRDR_GENERAL_CAPABILITY_SET*)capabilities->capabilitySets;
+	Stream_Write_UINT16(s, generalCapabilitySet->capabilitySetType);   /* capabilitySetType */
+	Stream_Write_UINT16(s, generalCapabilitySet->capabilitySetLength); /* lengthCapability */
+	Stream_Write_UINT32(s, generalCapabilitySet->version);             /* version */
+	flags = generalCapabilitySet->generalFlags;
+
+	/* Client capabilities are sent in response to server capabilities.
+	 * -> Do not request features the server does not support.
+	 * -> Update clipboard context feature state to what was agreed upon.
+	 */
+	if (!cliprdr->useLongFormatNames)
+		flags &= (uint32_t)~CB_USE_LONG_FORMAT_NAMES;
+	if (!cliprdr->streamFileClipEnabled)
+		flags &= (uint32_t)~CB_STREAM_FILECLIP_ENABLED;
+	if (!cliprdr->fileClipNoFilePaths)
+		flags &= (uint32_t)~CB_FILECLIP_NO_FILE_PATHS;
+	if (!cliprdr->canLockClipData)
+		flags &= (uint32_t)~CB_CAN_LOCK_CLIPDATA;
+	if (!cliprdr->hasHugeFileSupport)
+		flags &= (uint32_t)~CB_HUGE_FILE_SUPPORT_ENABLED;
+
+	cliprdr->useLongFormatNames = (flags & CB_USE_LONG_FORMAT_NAMES) ? TRUE : FALSE;
+	cliprdr->streamFileClipEnabled = (flags & CB_STREAM_FILECLIP_ENABLED) ? TRUE : FALSE;
+	cliprdr->fileClipNoFilePaths = (flags & CB_FILECLIP_NO_FILE_PATHS) ? TRUE : FALSE;
+	cliprdr->canLockClipData = (flags & CB_CAN_LOCK_CLIPDATA) ? TRUE : FALSE;
+	cliprdr->hasHugeFileSupport = (flags & CB_HUGE_FILE_SUPPORT_ENABLED) ? TRUE : FALSE;
+
+	Stream_Write_UINT32(s, flags); /* generalFlags */
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "ClientCapabilities");
+
+	cliprdr->initialFormatListSent = FALSE;
+
+	return cliprdr_packet_send(cliprdr, s);
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT cliprdr_temp_directory(CliprdrClientContext* context,
+                                   const CLIPRDR_TEMP_DIRECTORY* tempDirectory)
+{
+	wStream* s = NULL;
+	cliprdrPlugin* cliprdr = NULL;
+
+	WINPR_ASSERT(context);
+	WINPR_ASSERT(tempDirectory);
+
+	cliprdr = (cliprdrPlugin*)context->handle;
+	WINPR_ASSERT(cliprdr);
+
+	const size_t tmpDirCharLen = sizeof(tempDirectory->szTempDir) / sizeof(WCHAR);
+	s = cliprdr_packet_new(CB_TEMP_DIRECTORY, 0, tmpDirCharLen * sizeof(WCHAR));
+
+	if (!s)
+	{
+		WLog_ERR(TAG, "cliprdr_packet_new failed!");
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	if (Stream_Write_UTF16_String_From_UTF8(s, tmpDirCharLen - 1, tempDirectory->szTempDir,
+	                                        ARRAYSIZE(tempDirectory->szTempDir), TRUE) < 0)
+	{
+		Stream_Free(s, TRUE);
+		return ERROR_INTERNAL_ERROR;
+	}
+	/* Path must be 260 UTF16 characters with '\0' termination.
+	 * ensure this here */
+	Stream_Write_UINT16(s, 0);
+
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "TempDirectory: %s", tempDirectory->szTempDir);
+	return cliprdr_packet_send(cliprdr, s);
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT cliprdr_client_format_list(CliprdrClientContext* context,
+                                       const CLIPRDR_FORMAT_LIST* formatList)
+{
+	wStream* s = NULL;
+	cliprdrPlugin* cliprdr = NULL;
+
+	WINPR_ASSERT(context);
+	WINPR_ASSERT(formatList);
+
+	cliprdr = (cliprdrPlugin*)context->handle;
+	WINPR_ASSERT(cliprdr);
+
+	{
+		const UINT32 mask = CB_RESPONSE_OK | CB_RESPONSE_FAIL;
+		if ((formatList->common.msgFlags & mask) != 0)
+			WLog_WARN(TAG,
+			          "Sending clipboard request with invalid flags msgFlags = 0x%08" PRIx32
+			          ". Correct in your client!",
+			          formatList->common.msgFlags & mask);
+	}
+
+	const UINT32 mask =
+	    freerdp_settings_get_uint32(context->rdpcontext->settings, FreeRDP_ClipboardFeatureMask);
+	CLIPRDR_FORMAT_LIST filterList = cliprdr_filter_format_list(
+	    formatList, mask, CLIPRDR_FLAG_LOCAL_TO_REMOTE | CLIPRDR_FLAG_LOCAL_TO_REMOTE_FILES);
+
+	/* Allow initial format list from monitor ready, but ignore later attempts */
+	if ((filterList.numFormats == 0) && cliprdr->initialFormatListSent)
+	{
+		cliprdr_free_format_list(&filterList);
+		return CHANNEL_RC_OK;
+	}
+	cliprdr->initialFormatListSent = TRUE;
+
+	s = cliprdr_packet_format_list_new(&filterList, cliprdr->useLongFormatNames, FALSE);
+	cliprdr_free_format_list(&filterList);
+
+	if (!s)
+	{
+		WLog_ERR(TAG, "cliprdr_packet_format_list_new failed!");
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "ClientFormatList: numFormats: %" PRIu32 "",
+	           formatList->numFormats);
+	return cliprdr_packet_send(cliprdr, s);
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT
+cliprdr_client_format_list_response(CliprdrClientContext* context,
+                                    const CLIPRDR_FORMAT_LIST_RESPONSE* formatListResponse)
+{
+	wStream* s = NULL;
+	cliprdrPlugin* cliprdr = NULL;
+
+	WINPR_ASSERT(context);
+	WINPR_ASSERT(formatListResponse);
+
+	cliprdr = (cliprdrPlugin*)context->handle;
+	WINPR_ASSERT(cliprdr);
+
+	s = cliprdr_packet_new(CB_FORMAT_LIST_RESPONSE, formatListResponse->common.msgFlags, 0);
+
+	if (!s)
+	{
+		WLog_ERR(TAG, "cliprdr_packet_new failed!");
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "ClientFormatListResponse");
+	return cliprdr_packet_send(cliprdr, s);
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT cliprdr_client_lock_clipboard_data(CliprdrClientContext* context,
+                                               const CLIPRDR_LOCK_CLIPBOARD_DATA* lockClipboardData)
+{
+	wStream* s = NULL;
+	cliprdrPlugin* cliprdr = NULL;
+
+	WINPR_ASSERT(context);
+	WINPR_ASSERT(lockClipboardData);
+
+	cliprdr = (cliprdrPlugin*)context->handle;
+	WINPR_ASSERT(cliprdr);
+
+	s = cliprdr_packet_lock_clipdata_new(lockClipboardData);
+
+	if (!s)
+	{
+		WLog_ERR(TAG, "cliprdr_packet_lock_clipdata_new failed!");
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "ClientLockClipboardData: clipDataId: 0x%08" PRIX32 "",
+	           lockClipboardData->clipDataId);
+	return cliprdr_packet_send(cliprdr, s);
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT
+cliprdr_client_unlock_clipboard_data(CliprdrClientContext* context,
+                                     const CLIPRDR_UNLOCK_CLIPBOARD_DATA* unlockClipboardData)
+{
+	wStream* s = NULL;
+	cliprdrPlugin* cliprdr = NULL;
+
+	WINPR_ASSERT(context);
+	WINPR_ASSERT(unlockClipboardData);
+
+	cliprdr = (cliprdrPlugin*)context->handle;
+	WINPR_ASSERT(cliprdr);
+
+	s = cliprdr_packet_unlock_clipdata_new(unlockClipboardData);
+
+	if (!s)
+	{
+		WLog_ERR(TAG, "cliprdr_packet_unlock_clipdata_new failed!");
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "ClientUnlockClipboardData: clipDataId: 0x%08" PRIX32 "",
+	           unlockClipboardData->clipDataId);
+	return cliprdr_packet_send(cliprdr, s);
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT cliprdr_client_format_data_request(CliprdrClientContext* context,
+                                               const CLIPRDR_FORMAT_DATA_REQUEST* formatDataRequest)
+{
+	WINPR_ASSERT(context);
+	WINPR_ASSERT(formatDataRequest);
+
+	cliprdrPlugin* cliprdr = (cliprdrPlugin*)context->handle;
+	WINPR_ASSERT(cliprdr);
+
+	const UINT32 mask =
+	    freerdp_settings_get_uint32(context->rdpcontext->settings, FreeRDP_ClipboardFeatureMask);
+	if ((mask & (CLIPRDR_FLAG_REMOTE_TO_LOCAL | CLIPRDR_FLAG_REMOTE_TO_LOCAL_FILES)) == 0)
+	{
+		WLog_WARN(TAG, "remote -> local copy disabled, ignoring request");
+		return CHANNEL_RC_OK;
+	}
+
+	wStream* s = cliprdr_packet_new(CB_FORMAT_DATA_REQUEST, 0, 4);
+	if (!s)
+	{
+		WLog_ERR(TAG, "cliprdr_packet_new failed!");
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	Stream_Write_UINT32(s, formatDataRequest->requestedFormatId); /* requestedFormatId (4 bytes) */
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "ClientFormatDataRequest(0x%08" PRIx32 ")",
+	           formatDataRequest->requestedFormatId);
+	return cliprdr_packet_send(cliprdr, s);
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT
+cliprdr_client_format_data_response(CliprdrClientContext* context,
+                                    const CLIPRDR_FORMAT_DATA_RESPONSE* formatDataResponse)
+{
+	WINPR_ASSERT(context);
+	WINPR_ASSERT(formatDataResponse);
+
+	cliprdrPlugin* cliprdr = (cliprdrPlugin*)context->handle;
+	WINPR_ASSERT(cliprdr);
+
+	WINPR_ASSERT(
+	    (freerdp_settings_get_uint32(context->rdpcontext->settings, FreeRDP_ClipboardFeatureMask) &
+	     (CLIPRDR_FLAG_LOCAL_TO_REMOTE | CLIPRDR_FLAG_LOCAL_TO_REMOTE_FILES)) != 0);
+
+	wStream* s = cliprdr_packet_new(CB_FORMAT_DATA_RESPONSE, formatDataResponse->common.msgFlags,
+	                                formatDataResponse->common.dataLen);
+
+	if (!s)
+	{
+		WLog_ERR(TAG, "cliprdr_packet_new failed!");
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	Stream_Write(s, formatDataResponse->requestedFormatData, formatDataResponse->common.dataLen);
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "ClientFormatDataResponse");
+	return cliprdr_packet_send(cliprdr, s);
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT
+cliprdr_client_file_contents_request(CliprdrClientContext* context,
+                                     const CLIPRDR_FILE_CONTENTS_REQUEST* fileContentsRequest)
+{
+	wStream* s = NULL;
+	cliprdrPlugin* cliprdr = NULL;
+
+	WINPR_ASSERT(context);
+	WINPR_ASSERT(fileContentsRequest);
+
+	const UINT32 mask =
+	    freerdp_settings_get_uint32(context->rdpcontext->settings, FreeRDP_ClipboardFeatureMask);
+	if ((mask & CLIPRDR_FLAG_REMOTE_TO_LOCAL_FILES) == 0)
+	{
+		WLog_WARN(TAG, "remote -> local file copy disabled, ignoring request");
+		return CHANNEL_RC_OK;
+	}
+
+	cliprdr = (cliprdrPlugin*)context->handle;
+	if (!cliprdr)
+		return ERROR_INTERNAL_ERROR;
+
+	if (!cliprdr->hasHugeFileSupport)
+	{
+		if (((UINT64)fileContentsRequest->cbRequested + fileContentsRequest->nPositionLow) >
+		    UINT32_MAX)
+			return ERROR_INVALID_PARAMETER;
+		if (fileContentsRequest->nPositionHigh != 0)
+			return ERROR_INVALID_PARAMETER;
+	}
+
+	s = cliprdr_packet_file_contents_request_new(fileContentsRequest);
+
+	if (!s)
+	{
+		WLog_ERR(TAG, "cliprdr_packet_file_contents_request_new failed!");
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "ClientFileContentsRequest: streamId: 0x%08" PRIX32 "",
+	           fileContentsRequest->streamId);
+	return cliprdr_packet_send(cliprdr, s);
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT
+cliprdr_client_file_contents_response(CliprdrClientContext* context,
+                                      const CLIPRDR_FILE_CONTENTS_RESPONSE* fileContentsResponse)
+{
+	wStream* s = NULL;
+	cliprdrPlugin* cliprdr = NULL;
+
+	WINPR_ASSERT(context);
+	WINPR_ASSERT(fileContentsResponse);
+
+	cliprdr = (cliprdrPlugin*)context->handle;
+	WINPR_ASSERT(cliprdr);
+
+	const UINT32 mask =
+	    freerdp_settings_get_uint32(context->rdpcontext->settings, FreeRDP_ClipboardFeatureMask);
+	if ((mask & CLIPRDR_FLAG_LOCAL_TO_REMOTE_FILES) == 0)
+		return cliprdr_send_error_response(cliprdr, CB_FILECONTENTS_RESPONSE);
+
+	s = cliprdr_packet_file_contents_response_new(fileContentsResponse);
+
+	if (!s)
+	{
+		WLog_ERR(TAG, "cliprdr_packet_file_contents_response_new failed!");
+		return ERROR_INTERNAL_ERROR;
+	}
+
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "ClientFileContentsResponse: streamId: 0x%08" PRIX32 "",
+	           fileContentsResponse->streamId);
+	return cliprdr_packet_send(cliprdr, s);
+}
+
+static VOID VCAPITYPE cliprdr_virtual_channel_open_event_ex(LPVOID lpUserParam, DWORD openHandle,
+                                                            UINT event, LPVOID pData,
+                                                            UINT32 dataLength, UINT32 totalLength,
+                                                            UINT32 dataFlags)
+{
+	UINT error = CHANNEL_RC_OK;
+	cliprdrPlugin* cliprdr = (cliprdrPlugin*)lpUserParam;
+
+	switch (event)
+	{
+		case CHANNEL_EVENT_DATA_RECEIVED:
+			if (!cliprdr || (cliprdr->OpenHandle != openHandle))
+			{
+				WLog_ERR(TAG, "error no match");
+				return;
+			}
+			if ((error = channel_client_post_message(cliprdr->MsgsHandle, pData, dataLength,
+			                                         totalLength, dataFlags)))
+				WLog_ERR(TAG, "failed with error %" PRIu32 "", error);
+
+			break;
+
+		case CHANNEL_EVENT_WRITE_CANCELLED:
+		case CHANNEL_EVENT_WRITE_COMPLETE:
+		{
+			wStream* s = (wStream*)pData;
+			Stream_Free(s, TRUE);
+		}
+		break;
+
+		case CHANNEL_EVENT_USER:
+			break;
+		default:
+			break;
+	}
+
+	if (error && cliprdr && cliprdr->context->rdpcontext)
+		setChannelError(cliprdr->context->rdpcontext, error,
+		                "cliprdr_virtual_channel_open_event_ex reported an error");
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT cliprdr_virtual_channel_event_connected(cliprdrPlugin* cliprdr, LPVOID pData,
+                                                    UINT32 dataLength)
+{
+	DWORD status = 0;
+	WINPR_ASSERT(cliprdr);
+	WINPR_ASSERT(cliprdr->context);
+
+	WINPR_ASSERT(cliprdr->channelEntryPoints.pVirtualChannelOpenEx);
+	status = cliprdr->channelEntryPoints.pVirtualChannelOpenEx(
+	    cliprdr->InitHandle, &cliprdr->OpenHandle, cliprdr->channelDef.name,
+	    cliprdr_virtual_channel_open_event_ex);
+	if (status != CHANNEL_RC_OK)
+		return status;
+
+	cliprdr->MsgsHandle = channel_client_create_handler(
+	    cliprdr->context->rdpcontext, cliprdr, cliprdr_order_recv, CLIPRDR_SVC_CHANNEL_NAME);
+	if (!cliprdr->MsgsHandle)
+		return ERROR_INTERNAL_ERROR;
+
+	return status;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT cliprdr_virtual_channel_event_disconnected(cliprdrPlugin* cliprdr)
+{
+	UINT rc = 0;
+
+	WINPR_ASSERT(cliprdr);
+
+	channel_client_quit_handler(cliprdr->MsgsHandle);
+	cliprdr->MsgsHandle = NULL;
+
+	if (cliprdr->OpenHandle == 0)
+		return CHANNEL_RC_OK;
+
+	WINPR_ASSERT(cliprdr->channelEntryPoints.pVirtualChannelCloseEx);
+	rc = cliprdr->channelEntryPoints.pVirtualChannelCloseEx(cliprdr->InitHandle,
+	                                                        cliprdr->OpenHandle);
+
+	if (CHANNEL_RC_OK != rc)
+	{
+		WLog_ERR(TAG, "pVirtualChannelClose failed with %s [%08" PRIX32 "]", WTSErrorToString(rc),
+		         rc);
+		return rc;
+	}
+
+	cliprdr->OpenHandle = 0;
+
+	return CHANNEL_RC_OK;
+}
+
+/**
+ * Function description
+ *
+ * @return 0 on success, otherwise a Win32 error code
+ */
+static UINT cliprdr_virtual_channel_event_terminated(cliprdrPlugin* cliprdr)
+{
+	WINPR_ASSERT(cliprdr);
+
+	cliprdr->InitHandle = 0;
+	free(cliprdr->context);
+	free(cliprdr);
+	return CHANNEL_RC_OK;
+}
+
+static VOID VCAPITYPE cliprdr_virtual_channel_init_event_ex(LPVOID lpUserParam, LPVOID pInitHandle,
+                                                            UINT event, LPVOID pData,
+                                                            UINT dataLength)
+{
+	UINT error = CHANNEL_RC_OK;
+	cliprdrPlugin* cliprdr = (cliprdrPlugin*)lpUserParam;
+
+	if (!cliprdr || (cliprdr->InitHandle != pInitHandle))
+	{
+		WLog_ERR(TAG, "error no match");
+		return;
+	}
+
+	switch (event)
+	{
+		case CHANNEL_EVENT_CONNECTED:
+			if ((error = cliprdr_virtual_channel_event_connected(cliprdr, pData, dataLength)))
+				WLog_ERR(TAG,
+				         "cliprdr_virtual_channel_event_connected failed with error %" PRIu32 "!",
+				         error);
+
+			break;
+
+		case CHANNEL_EVENT_DISCONNECTED:
+			if ((error = cliprdr_virtual_channel_event_disconnected(cliprdr)))
+				WLog_ERR(TAG,
+				         "cliprdr_virtual_channel_event_disconnected failed with error %" PRIu32
+				         "!",
+				         error);
+
+			break;
+
+		case CHANNEL_EVENT_TERMINATED:
+			if ((error = cliprdr_virtual_channel_event_terminated(cliprdr)))
+				WLog_ERR(TAG,
+				         "cliprdr_virtual_channel_event_terminated failed with error %" PRIu32 "!",
+				         error);
+			break;
+		default:
+			break;
+	}
+
+	if (error && cliprdr->context->rdpcontext)
+		setChannelError(cliprdr->context->rdpcontext, error,
+		                "cliprdr_virtual_channel_init_event reported an error");
+}
+
+/* cliprdr is always built-in */
+#define VirtualChannelEntryEx cliprdr_VirtualChannelEntryEx
+
+FREERDP_ENTRY_POINT(BOOL VCAPITYPE VirtualChannelEntryEx(PCHANNEL_ENTRY_POINTS pEntryPoints,
+                                                         PVOID pInitHandle))
+{
+	UINT rc = 0;
+	cliprdrPlugin* cliprdr = NULL;
+	CliprdrClientContext* context = NULL;
+	CHANNEL_ENTRY_POINTS_FREERDP_EX* pEntryPointsEx = NULL;
+	cliprdr = (cliprdrPlugin*)calloc(1, sizeof(cliprdrPlugin));
+
+	if (!cliprdr)
+	{
+		WLog_ERR(TAG, "calloc failed!");
+		return FALSE;
+	}
+
+	cliprdr->channelDef.options = CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_ENCRYPT_RDP |
+	                              CHANNEL_OPTION_COMPRESS_RDP | CHANNEL_OPTION_SHOW_PROTOCOL;
+	(void)sprintf_s(cliprdr->channelDef.name, ARRAYSIZE(cliprdr->channelDef.name),
+	                CLIPRDR_SVC_CHANNEL_NAME);
+	pEntryPointsEx = (CHANNEL_ENTRY_POINTS_FREERDP_EX*)pEntryPoints;
+	WINPR_ASSERT(pEntryPointsEx);
+
+	if ((pEntryPointsEx->cbSize >= sizeof(CHANNEL_ENTRY_POINTS_FREERDP_EX)) &&
+	    (pEntryPointsEx->MagicNumber == FREERDP_CHANNEL_MAGIC_NUMBER))
+	{
+		context = (CliprdrClientContext*)calloc(1, sizeof(CliprdrClientContext));
+
+		if (!context)
+		{
+			free(cliprdr);
+			WLog_ERR(TAG, "calloc failed!");
+			return FALSE;
+		}
+
+		context->handle = (void*)cliprdr;
+		context->custom = NULL;
+		context->ClientCapabilities = cliprdr_client_capabilities;
+		context->TempDirectory = cliprdr_temp_directory;
+		context->ClientFormatList = cliprdr_client_format_list;
+		context->ClientFormatListResponse = cliprdr_client_format_list_response;
+		context->ClientLockClipboardData = cliprdr_client_lock_clipboard_data;
+		context->ClientUnlockClipboardData = cliprdr_client_unlock_clipboard_data;
+		context->ClientFormatDataRequest = cliprdr_client_format_data_request;
+		context->ClientFormatDataResponse = cliprdr_client_format_data_response;
+		context->ClientFileContentsRequest = cliprdr_client_file_contents_request;
+		context->ClientFileContentsResponse = cliprdr_client_file_contents_response;
+		cliprdr->context = context;
+		context->rdpcontext = pEntryPointsEx->context;
+	}
+
+	cliprdr->log = WLog_Get(CHANNELS_TAG("channels.cliprdr.client"));
+	WLog_Print(cliprdr->log, WLOG_DEBUG, "VirtualChannelEntryEx");
+	CopyMemory(&(cliprdr->channelEntryPoints), pEntryPoints,
+	           sizeof(CHANNEL_ENTRY_POINTS_FREERDP_EX));
+	cliprdr->InitHandle = pInitHandle;
+	rc = cliprdr->channelEntryPoints.pVirtualChannelInitEx(
+	    cliprdr, context, pInitHandle, &cliprdr->channelDef, 1, VIRTUAL_CHANNEL_VERSION_WIN2000,
+	    cliprdr_virtual_channel_init_event_ex);
+
+	if (CHANNEL_RC_OK != rc)
+	{
+		WLog_ERR(TAG, "pVirtualChannelInit failed with %s [%08" PRIX32 "]", WTSErrorToString(rc),
+		         rc);
+		free(cliprdr->context);
+		free(cliprdr);
+		return FALSE;
+	}
+
+	cliprdr->channelEntryPoints.pInterface = context;
+	return TRUE;
+}

local-test-freerdp-delta-01/afc-freerdp/channels/cliprdr/client/cliprdr_main.h

@@ -0,0 +1,61 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Clipboard Virtual Channel
+ *
+ * Copyright 2009-2011 Jay Sorg
+ * Copyright 2010-2011 Vic Lee
+ * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FREERDP_CHANNEL_CLIPRDR_CLIENT_MAIN_H
+#define FREERDP_CHANNEL_CLIPRDR_CLIENT_MAIN_H
+
+#include <winpr/stream.h>
+
+#include <freerdp/svc.h>
+#include <freerdp/addin.h>
+#include <freerdp/channels/log.h>
+#include <freerdp/client/cliprdr.h>
+
+#define TAG CHANNELS_TAG("cliprdr.client")
+
+typedef struct
+{
+	CHANNEL_DEF channelDef;
+	CHANNEL_ENTRY_POINTS_FREERDP_EX channelEntryPoints;
+
+	CliprdrClientContext* context;
+
+	wLog* log;
+	void* InitHandle;
+	DWORD OpenHandle;
+	void* MsgsHandle;
+
+	BOOL capabilitiesReceived;
+	BOOL useLongFormatNames;
+	BOOL streamFileClipEnabled;
+	BOOL fileClipNoFilePaths;
+	BOOL canLockClipData;
+	BOOL hasHugeFileSupport;
+	BOOL initialFormatListSent;
+} cliprdrPlugin;
+
+CliprdrClientContext* cliprdr_get_client_interface(cliprdrPlugin* cliprdr);
+UINT cliprdr_send_error_response(cliprdrPlugin* cliprdr, UINT16 type);
+
+extern const char type_FileGroupDescriptorW[];
+extern const char type_FileContents[];
+
+#endif /* FREERDP_CHANNEL_CLIPRDR_CLIENT_MAIN_H */

local-test-freerdp-delta-01/afc-freerdp/channels/cliprdr/cliprdr_common.c

@@ -0,0 +1,558 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Cliprdr common
+ *
+ * Copyright 2013 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+ * Copyright 2015 Thincast Technologies GmbH
+ * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
+ * Copyright 2019 Kobi Mizrachi <kmizrachi18@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <winpr/crt.h>
+#include <winpr/stream.h>
+#include <freerdp/channels/log.h>
+
+#define TAG CHANNELS_TAG("cliprdr.common")
+
+#include "cliprdr_common.h"
+
+static const char* CB_MSG_TYPE_STR(UINT32 type)
+{
+	switch (type)
+	{
+		case CB_TYPE_NONE:
+			return "CB_TYPE_NONE";
+		case CB_MONITOR_READY:
+			return "CB_MONITOR_READY";
+		case CB_FORMAT_LIST:
+			return "CB_FORMAT_LIST";
+		case CB_FORMAT_LIST_RESPONSE:
+			return "CB_FORMAT_LIST_RESPONSE";
+		case CB_FORMAT_DATA_REQUEST:
+			return "CB_FORMAT_DATA_REQUEST";
+		case CB_FORMAT_DATA_RESPONSE:
+			return "CB_FORMAT_DATA_RESPONSE";
+		case CB_TEMP_DIRECTORY:
+			return "CB_TEMP_DIRECTORY";
+		case CB_CLIP_CAPS:
+			return "CB_CLIP_CAPS";
+		case CB_FILECONTENTS_REQUEST:
+			return "CB_FILECONTENTS_REQUEST";
+		case CB_FILECONTENTS_RESPONSE:
+			return "CB_FILECONTENTS_RESPONSE";
+		case CB_LOCK_CLIPDATA:
+			return "CB_LOCK_CLIPDATA";
+		case CB_UNLOCK_CLIPDATA:
+			return "CB_UNLOCK_CLIPDATA";
+		default:
+			return "UNKNOWN";
+	}
+}
+
+const char* CB_MSG_TYPE_STRING(UINT16 type, char* buffer, size_t size)
+{
+	(void)_snprintf(buffer, size, "%s [0x%04" PRIx16 "]", CB_MSG_TYPE_STR(type), type);
+	return buffer;
+}
+
+const char* CB_MSG_FLAGS_STRING(UINT16 msgFlags, char* buffer, size_t size)
+{
+	if ((msgFlags & CB_RESPONSE_OK) != 0)
+		winpr_str_append("CB_RESPONSE_OK", buffer, size, "|");
+	if ((msgFlags & CB_RESPONSE_FAIL) != 0)
+		winpr_str_append("CB_RESPONSE_FAIL", buffer, size, "|");
+	if ((msgFlags & CB_ASCII_NAMES) != 0)
+		winpr_str_append("CB_ASCII_NAMES", buffer, size, "|");
+
+	const size_t len = strnlen(buffer, size);
+	if (!len)
+		winpr_str_append("NONE", buffer, size, "");
+
+	char val[32] = { 0 };
+	(void)_snprintf(val, sizeof(val), "[0x%04" PRIx16 "]", msgFlags);
+	winpr_str_append(val, buffer, size, "|");
+	return buffer;
+}
+
+static BOOL cliprdr_validate_file_contents_request(const CLIPRDR_FILE_CONTENTS_REQUEST* request)
+{
+	/*
+	 * [MS-RDPECLIP] 2.2.5.3 File Contents Request PDU (CLIPRDR_FILECONTENTS_REQUEST).
+	 *
+	 * A request for the size of the file identified by the lindex field. The size MUST be
+	 * returned as a 64-bit, unsigned integer. The cbRequested field MUST be set to
+	 * 0x00000008 and both the nPositionLow and nPositionHigh fields MUST be
+	 * set to 0x00000000.
+	 */
+
+	if (request->dwFlags & FILECONTENTS_SIZE)
+	{
+		if (request->cbRequested != sizeof(UINT64))
+		{
+			WLog_ERR(TAG, "cbRequested must be %" PRIu32 ", got %" PRIu32 "", sizeof(UINT64),
+			         request->cbRequested);
+			return FALSE;
+		}
+
+		if (request->nPositionHigh != 0 || request->nPositionLow != 0)
+		{
+			WLog_ERR(TAG, "nPositionHigh and nPositionLow must be set to 0");
+			return FALSE;
+		}
+	}
+
+	return TRUE;
+}
+
+wStream* cliprdr_packet_new(UINT16 msgType, UINT16 msgFlags, UINT32 dataLen)
+{
+	wStream* s = NULL;
+	s = Stream_New(NULL, dataLen + 8);
+
+	if (!s)
+	{
+		WLog_ERR(TAG, "Stream_New failed!");
+		return NULL;
+	}
+
+	Stream_Write_UINT16(s, msgType);
+	Stream_Write_UINT16(s, msgFlags);
+	/* Write actual length after the entire packet has been constructed. */
+	Stream_Write_UINT32(s, 0);
+	return s;
+}
+
+static void cliprdr_write_file_contents_request(wStream* s,
+                                                const CLIPRDR_FILE_CONTENTS_REQUEST* request)
+{
+	Stream_Write_UINT32(s, request->streamId);      /* streamId (4 bytes) */
+	Stream_Write_UINT32(s, request->listIndex);     /* listIndex (4 bytes) */
+	Stream_Write_UINT32(s, request->dwFlags);       /* dwFlags (4 bytes) */
+	Stream_Write_UINT32(s, request->nPositionLow);  /* nPositionLow (4 bytes) */
+	Stream_Write_UINT32(s, request->nPositionHigh); /* nPositionHigh (4 bytes) */
+	Stream_Write_UINT32(s, request->cbRequested);   /* cbRequested (4 bytes) */
+
+	if (request->haveClipDataId)
+		Stream_Write_UINT32(s, request->clipDataId); /* clipDataId (4 bytes) */
+}
+
+static INLINE void cliprdr_write_lock_unlock_clipdata(wStream* s, UINT32 clipDataId)
+{
+	Stream_Write_UINT32(s, clipDataId);
+}
+
+static void cliprdr_write_lock_clipdata(wStream* s,
+                                        const CLIPRDR_LOCK_CLIPBOARD_DATA* lockClipboardData)
+{
+	cliprdr_write_lock_unlock_clipdata(s, lockClipboardData->clipDataId);
+}
+
+static void cliprdr_write_unlock_clipdata(wStream* s,
+                                          const CLIPRDR_UNLOCK_CLIPBOARD_DATA* unlockClipboardData)
+{
+	cliprdr_write_lock_unlock_clipdata(s, unlockClipboardData->clipDataId);
+}
+
+static void cliprdr_write_file_contents_response(wStream* s,
+                                                 const CLIPRDR_FILE_CONTENTS_RESPONSE* response)
+{
+	Stream_Write_UINT32(s, response->streamId); /* streamId (4 bytes) */
+	Stream_Write(s, response->requestedData, response->cbRequested);
+}
+
+wStream* cliprdr_packet_lock_clipdata_new(const CLIPRDR_LOCK_CLIPBOARD_DATA* lockClipboardData)
+{
+	wStream* s = NULL;
+
+	if (!lockClipboardData)
+		return NULL;
+
+	s = cliprdr_packet_new(CB_LOCK_CLIPDATA, 0, 4);
+
+	if (!s)
+		return NULL;
+
+	cliprdr_write_lock_clipdata(s, lockClipboardData);
+	return s;
+}
+
+wStream*
+cliprdr_packet_unlock_clipdata_new(const CLIPRDR_UNLOCK_CLIPBOARD_DATA* unlockClipboardData)
+{
+	wStream* s = NULL;
+
+	if (!unlockClipboardData)
+		return NULL;
+
+	s = cliprdr_packet_new(CB_UNLOCK_CLIPDATA, 0, 4);
+
+	if (!s)
+		return NULL;
+
+	cliprdr_write_unlock_clipdata(s, unlockClipboardData);
+	return s;
+}
+
+wStream* cliprdr_packet_file_contents_request_new(const CLIPRDR_FILE_CONTENTS_REQUEST* request)
+{
+	wStream* s = NULL;
+
+	if (!request)
+		return NULL;
+
+	s = cliprdr_packet_new(CB_FILECONTENTS_REQUEST, 0, 28);
+
+	if (!s)
+		return NULL;
+
+	cliprdr_write_file_contents_request(s, request);
+	return s;
+}
+
+wStream* cliprdr_packet_file_contents_response_new(const CLIPRDR_FILE_CONTENTS_RESPONSE* response)
+{
+	wStream* s = NULL;
+
+	if (!response)
+		return NULL;
+
+	s = cliprdr_packet_new(CB_FILECONTENTS_RESPONSE, response->common.msgFlags,
+	                       4 + response->cbRequested);
+
+	if (!s)
+		return NULL;
+
+	cliprdr_write_file_contents_response(s, response);
+	return s;
+}
+
+wStream* cliprdr_packet_format_list_new(const CLIPRDR_FORMAT_LIST* formatList,
+                                        BOOL useLongFormatNames, BOOL useAsciiNames)
+{
+	WINPR_ASSERT(formatList);
+
+	if (formatList->common.msgType != CB_FORMAT_LIST)
+		WLog_WARN(TAG, "called with invalid type %08" PRIx32, formatList->common.msgType);
+
+	if (useLongFormatNames && useAsciiNames)
+		WLog_WARN(TAG, "called with invalid arguments useLongFormatNames=true && "
+		               "useAsciiNames=true. useAsciiNames requires "
+		               "useLongFormatNames=false, ignoring argument.");
+
+	const UINT32 length = formatList->numFormats * 36;
+	const size_t formatNameCharSize =
+	    (useLongFormatNames || !useAsciiNames) ? sizeof(WCHAR) : sizeof(CHAR);
+
+	wStream* s = cliprdr_packet_new(CB_FORMAT_LIST, 0, length);
+	if (!s)
+	{
+		WLog_ERR(TAG, "cliprdr_packet_new failed!");
+		return NULL;
+	}
+
+	for (UINT32 index = 0; index < formatList->numFormats; index++)
+	{
+		const CLIPRDR_FORMAT* format = &(formatList->formats[index]);
+
+		const char* szFormatName = format->formatName;
+		size_t formatNameLength = 0;
+		if (szFormatName)
+			formatNameLength = strlen(szFormatName);
+
+		size_t formatNameMaxLength = formatNameLength + 1; /* Ensure '\0' termination in output */
+		if (!Stream_EnsureRemainingCapacity(s,
+		                                    4 + MAX(32, formatNameMaxLength * formatNameCharSize)))
+			goto fail;
+
+		Stream_Write_UINT32(s, format->formatId); /* formatId (4 bytes) */
+
+		if (!useLongFormatNames)
+		{
+			formatNameMaxLength = useAsciiNames ? 32 : 16;
+			formatNameLength = MIN(formatNameMaxLength - 1, formatNameLength);
+		}
+
+		if (szFormatName && (formatNameLength > 0))
+		{
+			if (useAsciiNames)
+			{
+				Stream_Write(s, szFormatName, formatNameLength);
+				Stream_Zero(s, formatNameMaxLength - formatNameLength);
+			}
+			else
+			{
+				if (Stream_Write_UTF16_String_From_UTF8(s, formatNameMaxLength, szFormatName,
+				                                        formatNameLength, TRUE) < 0)
+					goto fail;
+			}
+		}
+		else
+			Stream_Zero(s, formatNameMaxLength * formatNameCharSize);
+	}
+
+	return s;
+
+fail:
+	Stream_Free(s, TRUE);
+	return NULL;
+}
+
+UINT cliprdr_read_unlock_clipdata(wStream* s, CLIPRDR_UNLOCK_CLIPBOARD_DATA* unlockClipboardData)
+{
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 4))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT32(s, unlockClipboardData->clipDataId); /* clipDataId (4 bytes) */
+	return CHANNEL_RC_OK;
+}
+
+UINT cliprdr_read_format_data_request(wStream* s, CLIPRDR_FORMAT_DATA_REQUEST* request)
+{
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 4))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT32(s, request->requestedFormatId); /* requestedFormatId (4 bytes) */
+	return CHANNEL_RC_OK;
+}
+
+UINT cliprdr_read_format_data_response(wStream* s, CLIPRDR_FORMAT_DATA_RESPONSE* response)
+{
+	response->requestedFormatData = NULL;
+
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, response->common.dataLen))
+		return ERROR_INVALID_DATA;
+
+	if (response->common.dataLen)
+		response->requestedFormatData = Stream_ConstPointer(s);
+
+	return CHANNEL_RC_OK;
+}
+
+UINT cliprdr_read_file_contents_request(wStream* s, CLIPRDR_FILE_CONTENTS_REQUEST* request)
+{
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 24))
+		return ERROR_INVALID_DATA;
+
+	request->haveClipDataId = FALSE;
+	Stream_Read_UINT32(s, request->streamId);      /* streamId (4 bytes) */
+	Stream_Read_UINT32(s, request->listIndex);     /* listIndex (4 bytes) */
+	Stream_Read_UINT32(s, request->dwFlags);       /* dwFlags (4 bytes) */
+	Stream_Read_UINT32(s, request->nPositionLow);  /* nPositionLow (4 bytes) */
+	Stream_Read_UINT32(s, request->nPositionHigh); /* nPositionHigh (4 bytes) */
+	Stream_Read_UINT32(s, request->cbRequested);   /* cbRequested (4 bytes) */
+
+	if (Stream_GetRemainingLength(s) >= 4)
+	{
+		Stream_Read_UINT32(s, request->clipDataId); /* clipDataId (4 bytes) */
+		request->haveClipDataId = TRUE;
+	}
+
+	if (!cliprdr_validate_file_contents_request(request))
+		return ERROR_BAD_ARGUMENTS;
+
+	return CHANNEL_RC_OK;
+}
+
+UINT cliprdr_read_file_contents_response(wStream* s, CLIPRDR_FILE_CONTENTS_RESPONSE* response)
+{
+	if (!Stream_CheckAndLogRequiredLength(TAG, s, 4))
+		return ERROR_INVALID_DATA;
+
+	Stream_Read_UINT32(s, response->streamId);   /* streamId (4 bytes) */
+	response->requestedData = Stream_ConstPointer(s); /* requestedFileContentsData */
+
+	WINPR_ASSERT(response->common.dataLen >= 4);
+	response->cbRequested = response->common.dataLen - 4;
+	return CHANNEL_RC_OK;
+}
+
+UINT cliprdr_read_format_list(wStream* s, CLIPRDR_FORMAT_LIST* formatList, BOOL useLongFormatNames)
+{
+	UINT32 index = 0;
+	size_t formatNameLength = 0;
+	const char* szFormatName = NULL;
+	const WCHAR* wszFormatName = NULL;
+	wStream sub1buffer = { 0 };
+	CLIPRDR_FORMAT* formats = NULL;
+	UINT error = ERROR_INTERNAL_ERROR;
+
+	const BOOL asciiNames = (formatList->common.msgFlags & CB_ASCII_NAMES) ? TRUE : FALSE;
+
+	index = 0;
+	/* empty format list */
+	formatList->formats = NULL;
+	formatList->numFormats = 0;
+
+	wStream* sub1 =
+	    Stream_StaticConstInit(&sub1buffer, Stream_ConstPointer(s), formatList->common.dataLen);
+	if (!Stream_SafeSeek(s, formatList->common.dataLen))
+		return ERROR_INVALID_DATA;
+
+	if (!formatList->common.dataLen)
+	{
+	}
+	else if (!useLongFormatNames)
+	{
+		const size_t cap = Stream_Capacity(sub1) / 36ULL;
+		if (cap > UINT32_MAX)
+		{
+			WLog_ERR(TAG, "Invalid short format list length: %" PRIuz "", cap);
+			return ERROR_INTERNAL_ERROR;
+		}
+		formatList->numFormats = (UINT32)cap;
+
+		if (formatList->numFormats)
+			formats = (CLIPRDR_FORMAT*)calloc(formatList->numFormats, sizeof(CLIPRDR_FORMAT));
+
+		if (!formats)
+		{
+			WLog_ERR(TAG, "calloc failed!");
+			return CHANNEL_RC_NO_MEMORY;
+		}
+
+		formatList->formats = formats;
+
+		while (Stream_GetRemainingLength(sub1) >= 4)
+		{
+			CLIPRDR_FORMAT* format = &formats[index];
+
+			Stream_Read_UINT32(sub1, format->formatId); /* formatId (4 bytes) */
+
+			/* According to MS-RDPECLIP 2.2.3.1.1.1 formatName is "a 32-byte block containing
+			 * the *null-terminated* name assigned to the Clipboard Format: (32 ASCII 8 characters
+			 * or 16 Unicode characters)"
+			 * However, both Windows RDSH and mstsc violate this specs as seen in the following
+			 * example of a transferred short format name string: [R.i.c.h. .T.e.x.t. .F.o.r.m.a.t.]
+			 * These are 16 unicode characters - *without* terminating null !
+			 */
+
+			szFormatName = Stream_ConstPointer(sub1);
+			wszFormatName = Stream_ConstPointer(sub1);
+			if (!Stream_SafeSeek(sub1, 32))
+				goto error_out;
+
+			free(format->formatName);
+			format->formatName = NULL;
+
+			if (asciiNames)
+			{
+				if (szFormatName[0])
+				{
+					/* ensure null termination */
+					format->formatName = strndup(szFormatName, 31);
+					if (!format->formatName)
+					{
+						WLog_ERR(TAG, "malloc failed!");
+						error = CHANNEL_RC_NO_MEMORY;
+						goto error_out;
+					}
+				}
+			}
+			else
+			{
+				if (wszFormatName[0])
+				{
+					format->formatName = ConvertWCharNToUtf8Alloc(wszFormatName, 16, NULL);
+					if (!format->formatName)
+						goto error_out;
+				}
+			}
+
+			index++;
+		}
+	}
+	else
+	{
+		wStream sub2buffer = sub1buffer;
+		wStream* sub2 = &sub2buffer;
+
+		while (Stream_GetRemainingLength(sub1) > 0)
+		{
+			size_t rest = 0;
+			if (!Stream_SafeSeek(sub1, 4)) /* formatId (4 bytes) */
+				goto error_out;
+
+			wszFormatName = Stream_ConstPointer(sub1);
+			rest = Stream_GetRemainingLength(sub1);
+			formatNameLength = _wcsnlen(wszFormatName, rest / sizeof(WCHAR));
+
+			if (!Stream_SafeSeek(sub1, (formatNameLength + 1) * sizeof(WCHAR)))
+				goto error_out;
+			formatList->numFormats++;
+		}
+
+		if (formatList->numFormats)
+			formats = (CLIPRDR_FORMAT*)calloc(formatList->numFormats, sizeof(CLIPRDR_FORMAT));
+
+		if (!formats)
+		{
+			WLog_ERR(TAG, "calloc failed!");
+			return CHANNEL_RC_NO_MEMORY;
+		}
+
+		formatList->formats = formats;
+
+		while (Stream_GetRemainingLength(sub2) >= 4)
+		{
+			size_t rest = 0;
+			CLIPRDR_FORMAT* format = &formats[index];
+
+			Stream_Read_UINT32(sub2, format->formatId); /* formatId (4 bytes) */
+
+			free(format->formatName);
+			format->formatName = NULL;
+
+			wszFormatName = Stream_ConstPointer(sub2);
+			rest = Stream_GetRemainingLength(sub2);
+			formatNameLength = _wcsnlen(wszFormatName, rest / sizeof(WCHAR));
+			if (!Stream_SafeSeek(sub2, (formatNameLength + 1) * sizeof(WCHAR)))
+				goto error_out;
+
+			if (formatNameLength)
+			{
+				format->formatName =
+				    ConvertWCharNToUtf8Alloc(wszFormatName, formatNameLength, NULL);
+				if (!format->formatName)
+					goto error_out;
+			}
+
+			index++;
+		}
+	}
+
+	return CHANNEL_RC_OK;
+
+error_out:
+	cliprdr_free_format_list(formatList);
+	return error;
+}
+
+void cliprdr_free_format_list(CLIPRDR_FORMAT_LIST* formatList)
+{
+	if (formatList == NULL)
+		return;
+
+	if (formatList->formats)
+	{
+		for (UINT32 index = 0; index < formatList->numFormats; index++)
+		{
+			free(formatList->formats[index].formatName);
+		}
+
+		free(formatList->formats);
+		formatList->formats = NULL;
+		formatList->numFormats = 0;
+	}
+}

local-test-freerdp-delta-01/afc-freerdp/channels/cliprdr/cliprdr_common.h

@@ -0,0 +1,64 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Cliprdr common
+ *
+ * Copyright 2013 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+ * Copyright 2015 Thincast Technologies GmbH
+ * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
+ * Copyright 2019 Kobi Mizrachi <kmizrachi18@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FREERDP_CHANNEL_RDPECLIP_COMMON_H
+#define FREERDP_CHANNEL_RDPECLIP_COMMON_H
+
+#include <winpr/crt.h>
+#include <winpr/stream.h>
+
+#include <freerdp/channels/cliprdr.h>
+#include <freerdp/api.h>
+
+FREERDP_LOCAL const char* CB_MSG_TYPE_STRING(UINT16 type, char* buffer, size_t size);
+FREERDP_LOCAL const char* CB_MSG_FLAGS_STRING(UINT16 msgFlags, char* buffer, size_t size);
+
+FREERDP_LOCAL wStream* cliprdr_packet_new(UINT16 msgType, UINT16 msgFlags, UINT32 dataLen);
+FREERDP_LOCAL wStream*
+cliprdr_packet_lock_clipdata_new(const CLIPRDR_LOCK_CLIPBOARD_DATA* lockClipboardData);
+FREERDP_LOCAL wStream*
+cliprdr_packet_unlock_clipdata_new(const CLIPRDR_UNLOCK_CLIPBOARD_DATA* unlockClipboardData);
+FREERDP_LOCAL wStream*
+cliprdr_packet_file_contents_request_new(const CLIPRDR_FILE_CONTENTS_REQUEST* request);
+FREERDP_LOCAL wStream*
+cliprdr_packet_file_contents_response_new(const CLIPRDR_FILE_CONTENTS_RESPONSE* response);
+FREERDP_LOCAL wStream* cliprdr_packet_format_list_new(const CLIPRDR_FORMAT_LIST* formatList,
+                                                      BOOL useLongFormatNames, BOOL useAsciiNames);
+
+FREERDP_LOCAL UINT cliprdr_read_lock_clipdata(wStream* s,
+                                              CLIPRDR_LOCK_CLIPBOARD_DATA* lockClipboardData);
+FREERDP_LOCAL UINT cliprdr_read_unlock_clipdata(wStream* s,
+                                                CLIPRDR_UNLOCK_CLIPBOARD_DATA* unlockClipboardData);
+FREERDP_LOCAL UINT cliprdr_read_format_data_request(wStream* s,
+                                                    CLIPRDR_FORMAT_DATA_REQUEST* formatDataRequest);
+FREERDP_LOCAL UINT cliprdr_read_format_data_response(wStream* s,
+                                                     CLIPRDR_FORMAT_DATA_RESPONSE* response);
+FREERDP_LOCAL UINT
+cliprdr_read_file_contents_request(wStream* s, CLIPRDR_FILE_CONTENTS_REQUEST* fileContentsRequest);
+FREERDP_LOCAL UINT cliprdr_read_file_contents_response(wStream* s,
+                                                       CLIPRDR_FILE_CONTENTS_RESPONSE* response);
+FREERDP_LOCAL UINT cliprdr_read_format_list(wStream* s, CLIPRDR_FORMAT_LIST* formatList,
+                                            BOOL useLongFormatNames);
+
+FREERDP_LOCAL void cliprdr_free_format_list(CLIPRDR_FORMAT_LIST* formatList);
+
+#endif /* FREERDP_CHANNEL_RDPECLIP_COMMON_H */

local-test-freerdp-delta-01/afc-freerdp/channels/cliprdr/server/CMakeLists.txt

@@ -0,0 +1,23 @@
+# FreeRDP: A Remote Desktop Protocol Implementation
+# FreeRDP cmake build script
+#
+# Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+define_channel_server("cliprdr")
+
+set(${MODULE_PREFIX}_SRCS cliprdr_main.c cliprdr_main.h ../cliprdr_common.h ../cliprdr_common.c)
+
+set(${MODULE_PREFIX}_LIBS freerdp)
+add_channel_server_library(${MODULE_PREFIX} ${MODULE_NAME} ${CHANNEL_NAME} FALSE "VirtualChannelEntry")