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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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14
src/pcm/pcm_shm.c
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@ -451,6 +451,19 @@ static int snd_pcm_shm_hwsync(snd_pcm_t *pcm)
return snd_pcm_shm_action(pcm);
}
static int snd_pcm_shm_hwptr(snd_pcm_t *pcm, snd_pcm_uframes_t *uframes)
{
snd_pcm_shm_t *shm = pcm->private_data;
volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
int err;
ctrl->cmd = SND_PCM_IOCTL_HWPTR;
return snd_pcm_shm_action(pcm);
if (err < 0)
return err;
*uframes = ctrl->u.hwptr.frames;
return err;
}
static int snd_pcm_shm_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp)
{
snd_pcm_shm_t *shm = pcm->private_data;
@ -619,6 +632,7 @@ static snd_pcm_fast_ops_t snd_pcm_shm_fast_ops = {
status: snd_pcm_shm_status,
state: snd_pcm_shm_state,
hwsync: snd_pcm_shm_hwsync,
hwptr: snd_pcm_shm_hwptr,
delay: snd_pcm_shm_delay,
prepare: snd_pcm_shm_prepare,
reset: snd_pcm_shm_reset,