diff options
Diffstat (limited to 'src/pcm/pcm_dsnoop.c')
| -rw-r--r-- | src/pcm/pcm_dsnoop.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/src/pcm/pcm_dsnoop.c b/src/pcm/pcm_dsnoop.c index e9ea81b..9d42c12 100644 --- a/src/pcm/pcm_dsnoop.c +++ b/src/pcm/pcm_dsnoop.c @@ -313,12 +313,29 @@ static int snd_pcm_dsnoop_pause(snd_pcm_t *pcm ATTRIBUTE_UNUSED, int enable ATTR return -EIO; } +static snd_pcm_sframes_t snd_pcm_dsnoop_rewindable(snd_pcm_t *pcm) +{ + return snd_pcm_mmap_capture_avail(pcm); +} + static snd_pcm_sframes_t snd_pcm_dsnoop_rewind(snd_pcm_t *pcm, snd_pcm_uframes_t frames) { + snd_pcm_sframes_t avail; + + avail = snd_pcm_mmap_capture_avail(pcm); + if (avail < 0) + return 0; + if (frames > (snd_pcm_uframes_t)avail) + frames = avail; snd_pcm_mmap_appl_backward(pcm, frames); return frames; } +static snd_pcm_sframes_t snd_pcm_dsnoop_forwardable(snd_pcm_t *pcm) +{ + return snd_pcm_mmap_capture_hw_avail(pcm); +} + static snd_pcm_sframes_t snd_pcm_dsnoop_forward(snd_pcm_t *pcm, snd_pcm_uframes_t frames) { snd_pcm_sframes_t avail; @@ -438,7 +455,7 @@ static void snd_pcm_dsnoop_dump(snd_pcm_t *pcm, snd_output_t *out) snd_pcm_dump(dsnoop->spcm, out); } -static snd_pcm_ops_t snd_pcm_dsnoop_ops = { +static const snd_pcm_ops_t snd_pcm_dsnoop_ops = { .close = snd_pcm_dsnoop_close, .info = snd_pcm_direct_info, .hw_refine = snd_pcm_direct_hw_refine, @@ -453,7 +470,7 @@ static snd_pcm_ops_t snd_pcm_dsnoop_ops = { .munmap = snd_pcm_direct_munmap, }; -static snd_pcm_fast_ops_t snd_pcm_dsnoop_fast_ops = { +static const snd_pcm_fast_ops_t snd_pcm_dsnoop_fast_ops = { .status = snd_pcm_dsnoop_status, .state = snd_pcm_dsnoop_state, .hwsync = snd_pcm_dsnoop_hwsync, @@ -464,7 +481,9 @@ static snd_pcm_fast_ops_t snd_pcm_dsnoop_fast_ops = { .drop = snd_pcm_dsnoop_drop, .drain = snd_pcm_dsnoop_drain, .pause = snd_pcm_dsnoop_pause, + .rewindable = snd_pcm_dsnoop_rewindable, .rewind = snd_pcm_dsnoop_rewind, + .forwardable = snd_pcm_dsnoop_forwardable, .forward = snd_pcm_dsnoop_forward, .resume = snd_pcm_direct_resume, .link = NULL, |