From d232fd1b3add3a93b81fc040d8b7e165590930cf Mon Sep 17 00:00:00 2001 From: sanine Date: Sun, 28 Aug 2022 14:21:42 -0500 Subject: add channel_get_next_sample() --- src/channel.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'src/channel.c') diff --git a/src/channel.c b/src/channel.c index e6e6c3f..b9242c4 100644 --- a/src/channel.c +++ b/src/channel.c @@ -26,3 +26,33 @@ void channel_reset(struct channel_t *chan) chan->pos = 0; p_atomic_int_set(&(chan->active), false); } + + +void channel_get_next_sample(float *left, float *right, struct channel_t *chan) +{ + bool active = p_atomic_int_get(&(chan->active)); + bool paused = p_atomic_int_get(&(chan->paused)); + if (!active || paused) { + /* skip this channel */ + *left = 0; + *right = 0; + return; + } + + if (!p_mutex_trylock(chan->sound_mutex)) { + /* can't lock mutex, skip */ + *left = 0; + *right = 0; + return; + } + + *left = chan->sound.left[chan->pos]; + *right = chan->sound.right[chan->pos]; + chan->pos += 1; + + if (chan->pos >= chan->sound.len) { + channel_reset(chan); + } + + p_mutex_unlock(chan->sound_mutex); +} -- cgit v1.2.1