diff options
Diffstat (limited to 'audio/pcm_bluetooth.c')
| -rw-r--r-- | audio/pcm_bluetooth.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/audio/pcm_bluetooth.c b/audio/pcm_bluetooth.c index fb3fce13..893a234c 100644 --- a/audio/pcm_bluetooth.c +++ b/audio/pcm_bluetooth.c @@ -764,6 +764,25 @@ done: return ret; } +static int bluetooth_playback_delay(snd_pcm_ioplug_t *io, + snd_pcm_sframes_t *delayp) +{ + DBG(""); + + /* This updates io->hw_ptr value using pointer() function */ + snd_pcm_hwsync(io->pcm); + + *delayp = io->appl_ptr - io->hw_ptr; + if ((io->state == SND_PCM_STATE_RUNNING) && (*delayp < 0)) { + io->callback->stop(io); + io->state = SND_PCM_STATE_XRUN; + *delayp = 0; + } + /* This should never fail, ALSA API is really not + prepared to handle a non zero return value */ + return 0; +} + static snd_pcm_ioplug_callback_t bluetooth_hsp_playback = { .start = bluetooth_playback_start, .stop = bluetooth_playback_stop, @@ -774,6 +793,7 @@ static snd_pcm_ioplug_callback_t bluetooth_hsp_playback = { .transfer = bluetooth_hsp_write, .poll_descriptors = bluetooth_playback_poll_descriptors, .poll_revents = bluetooth_playback_poll_revents, + .delay = bluetooth_playback_delay, }; static snd_pcm_ioplug_callback_t bluetooth_hsp_capture = { @@ -798,6 +818,7 @@ static snd_pcm_ioplug_callback_t bluetooth_a2dp_playback = { .transfer = bluetooth_a2dp_write, .poll_descriptors = bluetooth_playback_poll_descriptors, .poll_revents = bluetooth_playback_poll_revents, + .delay = bluetooth_playback_delay, }; static snd_pcm_ioplug_callback_t bluetooth_a2dp_capture = { |