Exemplos de loopback_bytepos_update em C++ (Cpp)

Exemplo n.º 1

static unsigned int loopback_pos_update(struct loopback_cable *cable)
{
	struct loopback_pcm *dpcm_play =
			cable->streams[SNDRV_PCM_STREAM_PLAYBACK];
	struct loopback_pcm *dpcm_capt =
			cable->streams[SNDRV_PCM_STREAM_CAPTURE];
	unsigned long delta_play = 0, delta_capt = 0;
	unsigned int running;

	spin_lock(&cable->lock);	
	running = cable->running;
	if (running & (1 << SNDRV_PCM_STREAM_PLAYBACK)) {
		delta_play = jiffies - dpcm_play->last_jiffies;
		dpcm_play->last_jiffies += delta_play;
	}

	if (running & (1 << SNDRV_PCM_STREAM_CAPTURE)) {
		delta_capt = jiffies - dpcm_capt->last_jiffies;
		dpcm_capt->last_jiffies += delta_capt;
	}

	if (delta_play == 0 && delta_capt == 0) {
		spin_unlock(&cable->lock);
		return running;
	}
		
	if (delta_play > delta_capt) {
		loopback_bytepos_update(dpcm_play, delta_play - delta_capt,
					BYTEPOS_UPDATE_POSONLY);
		delta_play = delta_capt;
	} else if (delta_play < delta_capt) {
		loopback_bytepos_update(dpcm_capt, delta_capt - delta_play,
					BYTEPOS_UPDATE_CLEAR);
		delta_capt = delta_play;
	}

	if (delta_play == 0 && delta_capt == 0) {
		spin_unlock(&cable->lock);
		return running;
	}
	/* note delta_capt == delta_play at this moment */
	loopback_bytepos_update(dpcm_capt, delta_capt, BYTEPOS_UPDATE_COPY);
	loopback_bytepos_update(dpcm_play, delta_play, BYTEPOS_UPDATE_POSONLY);
	spin_unlock(&cable->lock);
	return running;
}

Exemplo n.º 2

Arquivo: aloop.c Projeto: mjduddin/B14CKB1RD_kernel_m8

static unsigned int loopback_pos_update(struct loopback_cable *cable)
{
	struct loopback_pcm *dpcm_play =
			cable->streams[SNDRV_PCM_STREAM_PLAYBACK];
	struct loopback_pcm *dpcm_capt =
			cable->streams[SNDRV_PCM_STREAM_CAPTURE];
	unsigned long delta_play = 0, delta_capt = 0;
	unsigned int running;
	unsigned long flags;

	spin_lock_irqsave(&cable->lock, flags);
	running = cable->running ^ cable->pause;
	if (running & (1 << SNDRV_PCM_STREAM_PLAYBACK)) {
		delta_play = jiffies - dpcm_play->last_jiffies;
		dpcm_play->last_jiffies += delta_play;
	}

	if (running & (1 << SNDRV_PCM_STREAM_CAPTURE)) {
		delta_capt = jiffies - dpcm_capt->last_jiffies;
		dpcm_capt->last_jiffies += delta_capt;
	}

	if (delta_play == 0 && delta_capt == 0)
		goto unlock;
		
	if (delta_play > delta_capt) {
		loopback_bytepos_update(dpcm_play, delta_play - delta_capt,
					BYTEPOS_UPDATE_POSONLY);
		delta_play = delta_capt;
	} else if (delta_play < delta_capt) {
		loopback_bytepos_update(dpcm_capt, delta_capt - delta_play,
					BYTEPOS_UPDATE_CLEAR);
		delta_capt = delta_play;
	}

	if (delta_play == 0 && delta_capt == 0)
		goto unlock;

	
	loopback_bytepos_update(dpcm_capt, delta_capt, BYTEPOS_UPDATE_COPY);
	loopback_bytepos_update(dpcm_play, delta_play, BYTEPOS_UPDATE_POSONLY);
 unlock:
	spin_unlock_irqrestore(&cable->lock, flags);
	return running;
}