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Added snd_pcm_hwptr() and enhanced snd_pcm_mmap_begin() for no xrun mode.

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This commit is contained in:
Jaroslav Kysela 2003-02-22 10:19:53 +00:00
parent a91efc0fe6
commit fbd99fdec0
17 changed files with 231 additions and 13 deletions
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31
src/pcm/pcm_share.c
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@ -737,6 +737,36 @@ static int snd_pcm_share_hwsync(snd_pcm_t *pcm)
return err;
}
static int _snd_pcm_share_hwptr(snd_pcm_t *pcm, snd_pcm_uframes_t *hwptr)
{
snd_pcm_share_t *share = pcm->private_data;
snd_pcm_share_slave_t *slave = share->slave;
switch (share->state) {
case SND_PCM_STATE_RUNNING:
case SND_PCM_STATE_DRAINING:
case SND_PCM_STATE_PREPARED:
case SND_PCM_STATE_PAUSED:
case SND_PCM_STATE_SUSPENDED:
*hwptr = *pcm->hw.ptr;
return 0;
case SND_PCM_STATE_XRUN:
return -EPIPE;
default:
return -EBADFD;
}
}
static int snd_pcm_share_hwptr(snd_pcm_t *pcm, snd_pcm_uframes_t *hwptr)
{
snd_pcm_share_t *share = pcm->private_data;
snd_pcm_share_slave_t *slave = share->slave;
int err;
Pthread_mutex_lock(&slave->mutex);
err = _snd_pcm_share_hwptr(pcm, hwptr);
Pthread_mutex_unlock(&slave->mutex);
return err;
}
static int _snd_pcm_share_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp)
{
snd_pcm_share_t *share = pcm->private_data;
@ -1234,6 +1264,7 @@ static snd_pcm_fast_ops_t snd_pcm_share_fast_ops = {
status: snd_pcm_share_status,
state: snd_pcm_share_state,
hwsync: snd_pcm_share_hwsync,
hwptr: snd_pcm_share_hwptr,
delay: snd_pcm_share_delay,
prepare: snd_pcm_share_prepare,
reset: snd_pcm_share_reset,