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Implemented snd_pcm_avail() function.

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More documentation updates for snd_pcm_avail_update() and snd_pcm_delay().
Updated behaviour of read/write functions (wait when buffer is full) to
follow kernel.
This commit is contained in:
Jaroslav Kysela 2002-10-11 18:39:24 +00:00
parent 25e41cf1e8
commit e859cf2644
11 changed files with 189 additions and 69 deletions
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16
src/pcm/pcm_plugin.c
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@ -188,6 +188,19 @@ snd_pcm_state_t snd_pcm_plugin_state(snd_pcm_t *pcm)
return snd_pcm_state(plugin->slave);
}
int snd_pcm_plugin_avail(snd_pcm_t *pcm, snd_pcm_uframes_t *availp)
{
snd_pcm_plugin_t *plugin = pcm->private_data;
snd_pcm_uframes_t sd;
int err = snd_pcm_avail(plugin->slave, &sd);
if (err < 0)
return err;
if (plugin->client_frames)
sd = plugin->client_frames(pcm, sd);
*availp = sd;
return 0;
}
int snd_pcm_plugin_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp)
{
snd_pcm_plugin_t *plugin = pcm->private_data;
@ -197,7 +210,7 @@ int snd_pcm_plugin_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp)
return err;
if (plugin->client_frames)
sd = plugin->client_frames(pcm, sd);
*delayp = sd + snd_pcm_mmap_delay(pcm);
*delayp = sd;
return 0;
}
@ -627,6 +640,7 @@ int snd_pcm_plugin_hw_params_slave(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
snd_pcm_fast_ops_t snd_pcm_plugin_fast_ops = {
status: snd_pcm_plugin_status,
state: snd_pcm_plugin_state,
avail: snd_pcm_plugin_avail,
delay: snd_pcm_plugin_delay,
prepare: snd_pcm_plugin_prepare,
reset: snd_pcm_plugin_reset,