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Merge pull request #131 from pasqualirb/master

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pcm: Allow to wait if capture is not running
This commit is contained in:
Taylor Holberton
2019-07-07 21:15:08 -04:00
committed by GitHub
parent 69d37b8216 ae803f2905
commit e9a11799ec
1 changed files with 10 additions and 11 deletions
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src/pcm.c
+10 -11
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@@ -1282,17 +1282,16 @@ int pcm_mmap_transfer(struct pcm *pcm, void *buffer, unsigned int frames)
return -1;
state = pcm->mmap_status->state;
/* start capture if frames >= threshold */
if (!is_playback && state == PCM_STATE_PREPARED) {
if (frames >= pcm->config.start_threshold) {
err = ioctl(pcm->fd, SNDRV_PCM_IOCTL_START);
if (err == -1)
return -1;
/* state = PCM_STATE_RUNNING */
} else {
/* nothing to do */
return 0;
}
/*
* If frames < start_threshold, wait indefinitely.
* Another thread may start capture
*/
if (!is_playback && state == PCM_STATE_PREPARED &&
frames >= pcm->config.start_threshold) {
err = ioctl(pcm->fd, SNDRV_PCM_IOCTL_START);
if (err == -1)
return -1;
/* state = PCM_STATE_RUNNING */
}
avail = pcm_mmap_avail(pcm);