add channel_set_volume and channel_set_pan

1 files changed, 18 insertions, 0 deletions

diff --git a/src/channel.c b/src/channel.c
index 0141569..603a980 100644
--- a/src/channel.c
+++ b/src/channel.c
@@ -40,6 +40,24 @@ void channel_resume(struct channel_t *chan)
 }
 
 
+void channel_set_volume(struct channel_t *chan, float volume)
+{
+	if (volume > 1.0f) volume = 1.0f;
+	if (volume < 0.0f) volume = 0.0f;
+
+	p_atomic_int_set(&(chan->volume), 255*volume);
+}
+
+
+void channel_set_pan(struct channel_t *chan, float pan)
+{
+	if (pan > 1.0f) pan = 1.0f;
+	if (pan < -1.0f) pan = -1.0f;
+
+	p_atomic_int_set(&(chan->pan), 128*pan);
+}
+
+
 void channel_get_next_sample(float *left, float *right, struct channel_t *chan)
 {
 	bool active = p_atomic_int_get(&(chan->active));