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Removed snd_pcm_hwptr().

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Added snd_pcm_hwdiff() and snd_pcm_forward().
Returned the behaviour for snd_pcm_mmap_begin().
This commit is contained in:
Jaroslav Kysela 2003-02-22 17:19:02 +00:00
parent fbd99fdec0
commit 2dab1dfbc3
17 changed files with 327 additions and 246 deletions
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34
src/pcm/pcm_null.c
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@ -105,23 +105,6 @@ static int snd_pcm_null_hwsync(snd_pcm_t *pcm ATTRIBUTE_UNUSED)
return 0;
}
static int snd_pcm_null_hwptr(snd_pcm_t *pcm, snd_pcm_uframes_t *hwptr)
{
switch (snd_pcm_state(pcm)) {
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_null_delay(snd_pcm_t *pcm ATTRIBUTE_UNUSED, snd_pcm_sframes_t *delayp)
{
*delayp = 0;
@ -202,6 +185,21 @@ static snd_pcm_sframes_t snd_pcm_null_rewind(snd_pcm_t *pcm, snd_pcm_uframes_t f
}
}
static snd_pcm_sframes_t snd_pcm_null_forward(snd_pcm_t *pcm, snd_pcm_uframes_t frames)
{
snd_pcm_null_t *null = pcm->private_data;
switch (null->state) {
case SND_PCM_STATE_RUNNING:
snd_pcm_mmap_hw_forward(pcm, frames);
/* Fall through */
case SND_PCM_STATE_PREPARED:
snd_pcm_mmap_appl_forward(pcm, frames);
return frames;
default:
return -EBADFD;
}
}
static int snd_pcm_null_resume(snd_pcm_t *pcm ATTRIBUTE_UNUSED)
{
return 0;
@ -329,7 +327,6 @@ static snd_pcm_fast_ops_t snd_pcm_null_fast_ops = {
status: snd_pcm_null_status,
state: snd_pcm_null_state,
hwsync: snd_pcm_null_hwsync,
hwptr: snd_pcm_null_hwptr,
delay: snd_pcm_null_delay,
prepare: snd_pcm_null_prepare,
reset: snd_pcm_null_reset,
@ -338,6 +335,7 @@ static snd_pcm_fast_ops_t snd_pcm_null_fast_ops = {
drain: snd_pcm_null_drain,
pause: snd_pcm_null_pause,
rewind: snd_pcm_null_rewind,
forward: snd_pcm_null_forward,
resume: snd_pcm_null_resume,
writei: snd_pcm_null_writei,
writen: snd_pcm_null_writen,