CRAS: mix - Clean up unused function declaration

Remove cras_mix_add_stream declaration and rename
the related variables in unittest.

BUG=None
TEST=make check

Change-Id: I4d79c893d2ef8c129b3887ad8612cf642cb0a628
Reviewed-on: https://chromium-review.googlesource.com/217739
Reviewed-by: Chinyue Chen <chinyue@chromium.org>
Commit-Queue: Hsinyu Chao <hychao@chromium.org>
Tested-by: Hsinyu Chao <hychao@chromium.org>
CRAS: audio_thread - Handle dev_stream with a format converter.

If a dev_stream has a format converter, update the amount of frames
available and use the format converter when rendering samples.

BUG=none
TEST=none, not used yet.

Change-Id: Id1929b1cf8677a57852c4a873c19373bda3303a4
Signed-off-by: Dylan Reid <dgreid@chromium.org>
CRAS: audio_thread - remove unified timestamp.

Unified streams no longer exist, remove setting a timestamp for them.

Change-Id: Ibc1d8694f0eab27cd1850220626678164cde4a6b
Signed-off-by: Dylan Reid <dgreid@chromium.org>
CRAS: audio_thread - Use helper to check capture frames.

Add a new helper to dev_stream that returns how many frames are
writable in the stream for capture samples.  This will be useful in
later commits as sample rate conversion can make determining this
non-trivial.

Change-Id: I060a349021e0fcde269133dd7c5e51569cafbd62
Signed-off-by: Dylan Reid <dgreid@chromium.org>
CRAS: byte_buffer - Add size helpers.

Add helpers to check the total number of bytes available, and to
return both the pointer to the buffer and the number of bytes that can
be read or written.  This will be used by server side sample rate
conversion.

Change-Id: I1939c85cc5961240b6f6317eda80d81aee82f65b
Signed-off-by: Dylan Reid <dgreid@chromium.org>
CRAS: audio_thread - Remove temp variable.

avail_frames was only used once, remove it and use the result of the
function call directly.

Change-Id: I70c0554b4efe60fdd48435c4adda895c6823f968
Signed-off-by: Dylan Reid <dgreid@chromium.org>
CRAS: audio_thread - log write_limit from possibly_read

This will be useful to have logged before sample rate conversion on
capture.

Change-Id: I8f3873590b636843632f43dceaf1abff8a2ba506
Signed-off-by: Dylan Reid <dgreid@chromium.org>
CRAS: Implement format conversion for the capture path.

Add format conversion for capture samples on the server side.

Change-Id: I056b5ae4362ded6e2be1cebbc4cef8ab3ed80ac0
Signed-off-by: Dylan Reid <dgreid@chromium.org>
CRAS: move timestamp setting to dev_stream

This ins't really related to iodev, move it to devstream.

Change-Id: I8683eeba2b765ca59b5a8370d5927138158ede0b
Signed-off-by: Dylan Reid <dgreid@chromium.org>
CRAS: Account for SRC when reporting delay.

The delay reported by the device need to go through sample rate
conversion to the remote sample rate before being reported to the
client.

Change-Id: I2e9b9d5f8b0dfedf5a14a99bc946053fccecaaa6
Signed-off-by: Dylan Reid <dgreid@chromium.org>
CRAS: rclient - Accept the remote stream format.

Always accept the remote stream format when a stream is attached.  The
format conversion is now done in the audio thread, allow the client to
send whatever it wants.

This change will cause the client never to do format conversion, and
instead rely on the audio thread to convert to the format of the
device.

BUG=none
TEST=unittest, play record audio on blaze.

Change-Id: Ib6261a640cc237f74e92ee37ce555914d047a43e
Signed-off-by: Dylan Reid <dgreid@chromium.org>
CRAS: Only set dev format from the audio thread.

Since the format converter now lives in the audio thread, there is no
need to update the format of the rstream based on the device format.
Now set the device format when adding the first stream in the audio
thread.

BUG=none
TEST=unittest, plus play and record audio with multiple test clients.

Change-Id: I7288529e73a27b78a60c9076442577018e4aa47e
Signed-off-by: Dylan Reid <dgreid@chromium.org>
CRAS: audio_thread - move first_dev helpers.

They are needed earlier in the file by a later commit

BUG=none
TEST=unittests

Change-Id: I37196bddc22c9fcf63cd6e01f61183b51697cc5a
Signed-off-by: Dylan Reid <dgreid@chromium.org>
CRAS: audio_thread - pre-fill the odev when opening it.

Filling the odev with one cb_threshold of data will prevent the client
from seeing two quick requests when adding the first stream.

BUG=none
TEST=unittest and play audio on Yoshi.

Change-Id: Id98aaaf18164e684ba07185f9ae11e9264a219c0
Signed-off-by: Dylan Reid <dgreid@chromium.org>
CRAS: util - Add helper to add timespecs.

BUG=none
TEST=none =(

Change-Id: Idf70a1cc038395dca20de385401525b755d9f79f
Signed-off-by: Dylan Reid <dgreid@chromium.org>
CRAS: audio_thread - set stream draining on error.

If there is an error communicating with a stream, mark is as draining
so it is removed as soon as the audio is used up.

BUG=none
TEST=play audio on Blaze

Change-Id: Ie6d41a7fcdaa74746d9ecd5ee144a2f287b928df
Signed-off-by: Dylan Reid <dgreid@chromium.org>
CRAS: Move rstream request to dev_stream.

Move requesting playback samples to a function in dev_stream.  This
removes one more dependency on rstream from audio_thread and will make
a good place to update stream-specific timers in a future change.

Change-Id: I3ccf49b17135ab44050be7cecc132021d2ead2c5
Signed-off-by: Dylan Reid <dgreid@chromium.org>
CRAS: Keep next callback time per dev_stream.

For each stream, save the time it should next be serviced.  This time
is start + n * callback_number.  Add one callback threshold of sleep
time after every callback.

This time will later be used to better calculate when to make
callbacks to a stream.

Change-Id: I210329b320bdd0b9b885ad1d3ce0d50b166083f0
Signed-off-by: Dylan Reid <dgreid@chromium.org>
CRAS: audio_thread - Prefill with more zeros for min_buffer_level > 0

If a device has min_buffer_level set, start with cb_threshold +
min_buffer_level samples.  Without this the device will need to make
more than one consecutive callbacks to get filled to the appropriate
level.

BUG=none
TEST=play audio to BT and USB

Change-Id: Idc5ca851433bbd217a46ca40d5acc3e465f6690d
Signed-off-by: Dylan Reid <dgreid@chromium.org>
CRAS: audio_thread - Prefill shm for output streams.

Instead of dumping zeros into the output device, mark a buffer as
ready in the shared memory region.  This way it works for streams that
aren't the first ones added to a device.

Change-Id: I103858a54f588e62cff1116087df09fcfa74e7ac
Signed-off-by: Dylan Reid <dgreid@chromium.org>