C++ (Cpp) line6_wait_clear_audio_urbsの例

コード例 #1

ファイル: pcm.c プロジェクト: 020gzh/linux

/*
	Sync with PCM stream stops.
*/
void line6_pcm_disconnect(struct snd_line6_pcm *line6pcm)
{
	line6_unlink_audio_urbs(line6pcm, &line6pcm->out);
	line6_unlink_audio_urbs(line6pcm, &line6pcm->in);
	line6_wait_clear_audio_urbs(line6pcm, &line6pcm->out);
	line6_wait_clear_audio_urbs(line6pcm, &line6pcm->in);
}

コード例 #2

ファイル: pcm.c プロジェクト: AshishNamdev/linux

/* Acquire and optionally start duplex streams:
 * type is either LINE6_STREAM_IMPULSE or LINE6_STREAM_MONITOR
 */
int line6_pcm_acquire(struct snd_line6_pcm *line6pcm, int type, bool start)
{
	struct line6_pcm_stream *pstr;
	int ret = 0, dir;

	/* TODO: We should assert SNDRV_PCM_STREAM_PLAYBACK/CAPTURE == 0/1 */
	mutex_lock(&line6pcm->state_mutex);
	for (dir = 0; dir < 2; dir++) {
		pstr = get_stream(line6pcm, dir);
		ret = line6_buffer_acquire(line6pcm, pstr, dir, type);
		if (ret < 0)
			goto error;
		if (!pstr->running)
			line6_wait_clear_audio_urbs(line6pcm, pstr);
	}
	if (start) {
		for (dir = 0; dir < 2; dir++) {
			ret = line6_stream_start(line6pcm, dir, type);
			if (ret < 0)
				goto error;
		}
	}
 error:
	mutex_unlock(&line6pcm->state_mutex);
	if (ret < 0)
		line6_pcm_release(line6pcm, type);
	return ret;
}

コード例 #3

ファイル: pcm.c プロジェクト: 020gzh/linux

/* Acquire and start duplex streams:
 * type is either LINE6_STREAM_IMPULSE or LINE6_STREAM_MONITOR
 */
int line6_pcm_acquire(struct snd_line6_pcm *line6pcm, int type)
{
	struct line6_pcm_stream *pstr;
	int ret = 0, dir;

	mutex_lock(&line6pcm->state_mutex);
	for (dir = 0; dir < 2; dir++) {
		pstr = get_stream(line6pcm, dir);
		ret = line6_buffer_acquire(line6pcm, pstr, type);
		if (ret < 0)
			goto error;
		if (!pstr->running)
			line6_wait_clear_audio_urbs(line6pcm, pstr);
	}
	for (dir = 0; dir < 2; dir++) {
		ret = line6_stream_start(line6pcm, dir, type);
		if (ret < 0)
			goto error;
	}
 error:
	mutex_unlock(&line6pcm->state_mutex);
	if (ret < 0)
		line6_pcm_release(line6pcm, type);
	return ret;
}

コード例 #4

ファイル: pcm.c プロジェクト: AshishNamdev/linux

/* free a buffer if all streams are closed;
 * call this in line6pcm.state_mutex
 */
static void line6_buffer_release(struct snd_line6_pcm *line6pcm,
				 struct line6_pcm_stream *pstr, int type)
{
	clear_bit(type, &pstr->opened);
	if (!pstr->opened) {
		line6_wait_clear_audio_urbs(line6pcm, pstr);
		kfree(pstr->buffer);
		pstr->buffer = NULL;
	}
}

コード例 #5

ファイル: pcm.c プロジェクト: 020gzh/linux

/* prepare pcm callback */
int snd_line6_prepare(struct snd_pcm_substream *substream)
{
	struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
	struct line6_pcm_stream *pstr = get_stream(line6pcm, substream->stream);

	mutex_lock(&line6pcm->state_mutex);
	if (!pstr->running)
		line6_wait_clear_audio_urbs(line6pcm, pstr);

	if (!test_and_set_bit(LINE6_FLAG_PREPARED, &line6pcm->flags)) {
		line6pcm->out.count = 0;
		line6pcm->out.pos = 0;
		line6pcm->out.pos_done = 0;
		line6pcm->out.bytes = 0;
		line6pcm->in.count = 0;
		line6pcm->in.pos_done = 0;
		line6pcm->in.bytes = 0;
	}

	mutex_unlock(&line6pcm->state_mutex);
	return 0;
}