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pcm_hw: Always use delay ioctl in snd_pcm_delay()

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As the result of snd_pcm_delay() is affected not only by hw_ptr
and appl_ptr, but also by 'runtime->delay' property,
either SNDRV_PCM_IOCTL_DELAY or SNDRV_PCM_IOCTL_STATUS ioctl
must be used to get the correct result.

Previously 'runtime->delay' was ignored in case 'hw->sync_ptr'
was used.

Signed-off-by: Kai Vehmanen <kvehmanen@eca.cx>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Kai Vehmanen 2009-09-11 01:07:21 +03:00 • committed by Takashi Iwai
parent a4e7033f8d
commit ecf4b5af86
1 changed files with 0 additions and 22 deletions
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22
src/pcm/pcm_hw.c
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@ -507,28 +507,6 @@ static int snd_pcm_hw_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp)
{
snd_pcm_hw_t *hw = pcm->private_data;
int fd = hw->fd, err;
if (hw->sync_ptr) {
err = sync_ptr1(hw, SNDRV_PCM_SYNC_PTR_HWSYNC);
if (err < 0)
return err;
switch (FAST_PCM_STATE(hw)) {
case SNDRV_PCM_STATE_RUNNING:
case SNDRV_PCM_STATE_DRAINING:
case SNDRV_PCM_STATE_PAUSED:
case SNDRV_PCM_STATE_PREPARED:
case SNDRV_PCM_STATE_SUSPENDED:
break;
case SNDRV_PCM_STATE_XRUN:
return -EPIPE;
default:
return -EBADFD;
}
if (pcm->stream == SND_PCM_STREAM_PLAYBACK)
*delayp = snd_pcm_mmap_playback_hw_avail(pcm);
else
*delayp = snd_pcm_mmap_capture_avail(pcm);
return 0;
}
if (ioctl(fd, SNDRV_PCM_IOCTL_DELAY, delayp) < 0) {
err = -errno;
SYSMSG("SNDRV_PCM_IOCTL_DELAY failed");