diff options
| author | Alexander E. Patrakov <patrakov@gmail.com> | 2014-06-12 16:34:23 +0600 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2014-06-13 09:04:29 +0200 |
| commit | fb73f310f8e62e04c4b420a2316c2dfd30651b62 (patch) | |
| tree | 337c5151aacf76f1168f36f3f09614a6054070ae /src/pcm | |
| parent | 68ae0c72a53704d416fe77d4c612d1f88d791e02 (diff) | |
pcm: multi: implement rewindable and forwardable callbacks
Signed-off-by: Alexander E. Patrakov <patrakov@gmail.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'src/pcm')
| -rw-r--r-- | src/pcm/pcm_multi.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/pcm/pcm_multi.c b/src/pcm/pcm_multi.c index f58852ca..a84e0ce4 100644 --- a/src/pcm/pcm_multi.c +++ b/src/pcm/pcm_multi.c @@ -555,6 +555,42 @@ static int snd_pcm_multi_channel_info(snd_pcm_t *pcm, snd_pcm_channel_info_t *in return err; } +static snd_pcm_sframes_t snd_pcm_multi_rewindable(snd_pcm_t *pcm) +{ + snd_pcm_multi_t *multi = pcm->private_data; + unsigned int i; + snd_pcm_sframes_t frames = LONG_MAX; + + for (i = 0; i < multi->slaves_count; ++i) { + snd_pcm_sframes_t f = snd_pcm_rewindable(multi->slaves[i].pcm); + if (f <= 0) + return f; + if (f < frames) + frames = f; + } + + return frames; + +} + +static snd_pcm_sframes_t snd_pcm_multi_forwardable(snd_pcm_t *pcm) +{ + snd_pcm_multi_t *multi = pcm->private_data; + unsigned int i; + snd_pcm_sframes_t frames = LONG_MAX; + + for (i = 0; i < multi->slaves_count; ++i) { + snd_pcm_sframes_t f = snd_pcm_forwardable(multi->slaves[i].pcm); + if (f <= 0) + return f; + if (f < frames) + frames = f; + } + + return frames; + +} + static snd_pcm_sframes_t snd_pcm_multi_rewind(snd_pcm_t *pcm, snd_pcm_uframes_t frames) { snd_pcm_multi_t *multi = pcm->private_data; @@ -932,7 +968,9 @@ static const snd_pcm_fast_ops_t snd_pcm_multi_fast_ops = { .writen = snd_pcm_mmap_writen, .readi = snd_pcm_mmap_readi, .readn = snd_pcm_mmap_readn, + .rewindable = snd_pcm_multi_rewindable, .rewind = snd_pcm_multi_rewind, + .forwardable = snd_pcm_multi_forwardable, .forward = snd_pcm_multi_forward, .resume = snd_pcm_multi_resume, .link = snd_pcm_multi_link, |