static enum avdtp_parse_result avdtp_parse_data(struct avdtp *session,
							void *buf, size_t size)
{
	struct avdtp_common_header *header = buf;
	struct avdtp_single_header *single = (void *) session->buf;
	struct avdtp_start_header *start = (void *) session->buf;
	void *payload;
	gsize payload_size;

	switch (header->packet_type) {
	case AVDTP_PKT_TYPE_SINGLE:
		if (size < sizeof(*single)) {
			error("Received too small single packet (%zu bytes)", size);
			return PARSE_ERROR;
		}
		if (session->in.active) {
			error("SINGLE: Invalid AVDTP packet fragmentation");
			return PARSE_ERROR;
		}

		payload = session->buf + sizeof(*single);
		payload_size = size - sizeof(*single);

		session->in.active = TRUE;
		session->in.data_size = 0;
		session->in.no_of_packets = 1;
		session->in.transaction = header->transaction;
		session->in.message_type = header->message_type;
		session->in.signal_id = single->signal_id;

		break;
	case AVDTP_PKT_TYPE_START:
		if (size < sizeof(*start)) {
			error("Received too small start packet (%zu bytes)", size);
			return PARSE_ERROR;
		}
		if (session->in.active) {
			error("START: Invalid AVDTP packet fragmentation");
			return PARSE_ERROR;
		}

		session->in.active = TRUE;
		session->in.data_size = 0;
		session->in.transaction = header->transaction;
		session->in.message_type = header->message_type;
		session->in.no_of_packets = start->no_of_packets;
		session->in.signal_id = start->signal_id;

		payload = session->buf + sizeof(*start);
		payload_size = size - sizeof(*start);

		break;
	case AVDTP_PKT_TYPE_CONTINUE:
		if (size < sizeof(struct avdtp_continue_header)) {
			error("Received too small continue packet (%zu bytes)",
									size);
			return PARSE_ERROR;
		}
		if (!session->in.active) {
			error("CONTINUE: Invalid AVDTP packet fragmentation");
			return PARSE_ERROR;
		}
		if (session->in.transaction != header->transaction) {
			error("Continue transaction id doesn't match");
			return PARSE_ERROR;
		}
		if (session->in.no_of_packets <= 1) {
			error("Too few continue packets");
			return PARSE_ERROR;
		}

		payload = session->buf + sizeof(struct avdtp_continue_header);
		payload_size = size - sizeof(struct avdtp_continue_header);

		break;
	case AVDTP_PKT_TYPE_END:
		if (size < sizeof(struct avdtp_continue_header)) {
			error("Received too small end packet (%zu bytes)", size);
			return PARSE_ERROR;
		}
		if (!session->in.active) {
			error("END: Invalid AVDTP packet fragmentation");
			return PARSE_ERROR;
		}
		if (session->in.transaction != header->transaction) {
			error("End transaction id doesn't match");
			return PARSE_ERROR;
		}
		if (session->in.no_of_packets > 1) {
			error("Got an end packet too early");
			return PARSE_ERROR;
		}

		payload = session->buf + sizeof(struct avdtp_continue_header);
		payload_size = size - sizeof(struct avdtp_continue_header);

		break;
	default:
		error("Invalid AVDTP packet type 0x%02X", header->packet_type);
		return PARSE_ERROR;
	}

	if (session->in.data_size + payload_size >
					sizeof(session->in.buf)) {
		error("Not enough incoming buffer space!");
		return PARSE_ERROR;
	}

	memcpy(session->in.buf + session->in.data_size, payload, payload_size);
	session->in.data_size += payload_size;

	if (session->in.no_of_packets > 1) {
		session->in.no_of_packets--;
		DBG("Received AVDTP fragment. %d to go",
						session->in.no_of_packets);
		return PARSE_FRAGMENT;
	}

	session->in.active = FALSE;

	return PARSE_SUCCESS;
}
static enum avdtp_parse_result avdtp_parse_data(struct avdtp *session,
							void *buf, size_t size)
{
	struct avdtp_common_header *header = buf;
	struct avdtp_single_header *single = (void *) session->buf;
	struct avdtp_start_header *start = (void *) session->buf;
	void *payload;
	gsize payload_size;

	switch (header->packet_type) {
	case AVDTP_PKT_TYPE_SINGLE:
		if (size < sizeof(*single)) {
			error("Received too small single packet (%zu bytes)", size);
			return PARSE_ERROR;
		}
		if (session->in.active) {
			error("SINGLE: Invalid AVDTP packet fragmentation");
			return PARSE_ERROR;
		}

		payload = session->buf + sizeof(*single);
		payload_size = size - sizeof(*single);

		session->in.active = TRUE;
		session->in.data_size = 0;
		session->in.no_of_packets = 1;
		session->in.transaction = header->transaction;
		session->in.message_type = header->message_type;
		session->in.signal_id = single->signal_id;

		break;
	case AVDTP_PKT_TYPE_START:
		if (size < sizeof(*start)) {
			error("Received too small start packet (%zu bytes)", size);
			return PARSE_ERROR;
		}
		if (session->in.active) {
			error("START: Invalid AVDTP packet fragmentation");
			return PARSE_ERROR;
		}

		session->in.active = TRUE;
		session->in.data_size = 0;
		session->in.transaction = header->transaction;
		session->in.message_type = header->message_type;
		session->in.no_of_packets = start->no_of_packets;
		session->in.signal_id = start->signal_id;

		payload = session->buf + sizeof(*start);
		payload_size = size - sizeof(*start);

		break;
	case AVDTP_PKT_TYPE_CONTINUE:
		if (size < sizeof(struct avdtp_continue_header)) {
			error("Received too small continue packet (%zu bytes)",
									size);
			return PARSE_ERROR;
		}
		if (!session->in.active) {
			error("CONTINUE: Invalid AVDTP packet fragmentation");
			return PARSE_ERROR;
		}
		if (session->in.transaction != header->transaction) {
			error("Continue transaction id doesn't match");
			return PARSE_ERROR;
		}
		if (session->in.no_of_packets <= 1) {
			error("Too few continue packets");
			return PARSE_ERROR;
		}

		payload = session->buf + sizeof(struct avdtp_continue_header);
		payload_size = size - sizeof(struct avdtp_continue_header);

		break;
	case AVDTP_PKT_TYPE_END:
		if (size < sizeof(struct avdtp_continue_header)) {
			error("Received too small end packet (%zu bytes)", size);
			return PARSE_ERROR;
		}
		if (!session->in.active) {
			error("END: Invalid AVDTP packet fragmentation");
			return PARSE_ERROR;
		}
		if (session->in.transaction != header->transaction) {
			error("End transaction id doesn't match");
			return PARSE_ERROR;
		}
		if (session->in.no_of_packets > 1) {
			error("Got an end packet too early");
			return PARSE_ERROR;
		}

		payload = session->buf + sizeof(struct avdtp_continue_header);
		payload_size = size - sizeof(struct avdtp_continue_header);

		break;
	default:
		error("Invalid AVDTP packet type 0x%02X", header->packet_type);
		return PARSE_ERROR;
	}

	if (session->in.data_size + payload_size >
					sizeof(session->in.buf)) {
		error("Not enough incoming buffer space!");
		return PARSE_ERROR;
	}

	memcpy(session->in.buf + session->in.data_size, payload, payload_size);
	session->in.data_size += payload_size;

	if (session->in.no_of_packets > 1) {
		session->in.no_of_packets--;
		DBG("Received AVDTP fragment. %d to go",
						session->in.no_of_packets);
		return PARSE_FRAGMENT;
	}

	session->in.active = FALSE;

	return PARSE_SUCCESS;
}