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Implement missing htimestamp callbacks

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Implemented the missing htimestamp callbacks for ioplug, rate and null
plugins.
This commit is contained in:
Takashi Iwai 2008-01-15 14:29:34 +01:00
parent 77849672cd
commit 91fc64cefb
5 changed files with 50 additions and 20 deletions
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27
src/pcm/pcm_rate.c
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@ -1020,11 +1020,30 @@ static snd_pcm_sframes_t snd_pcm_rate_avail_update(snd_pcm_t *pcm)
}
}
static int snd_pcm_rate_htimestamp(snd_pcm_t *pcm ATTRIBUTE_UNUSED,
snd_pcm_uframes_t *avail ATTRIBUTE_UNUSED,
snd_htimestamp_t *tstamp ATTRIBUTE_UNUSED)
static int snd_pcm_rate_htimestamp(snd_pcm_t *pcm,
snd_pcm_uframes_t *avail,
snd_htimestamp_t *tstamp)
{
return -EIO; /* not implemented yet */
snd_pcm_rate_t *rate = pcm->private_data;
snd_pcm_sframes_t avail1;
snd_pcm_uframes_t tmp;
int ok = 0, err;
while (1) {
/* the position is from this plugin itself */
avail1 = snd_pcm_avail_update(pcm);
if (avail1 < 0)
return avail1;
if (ok && (snd_pcm_uframes_t)avail1 == *avail)
break;
*avail = avail1;
/* timestamp is taken from the slave PCM */
err = snd_pcm_htimestamp(rate->gen.slave, &tmp, tstamp);
if (err < 0)
return err;
ok = 1;
}
return 0;
}
static int snd_pcm_rate_poll_revents(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int nfds, unsigned short *revents)