implement callbacks

1 files changed, 10 insertions, 0 deletions

diff --git a/src/channel.h b/src/channel.h
index 5be42a2..61a1c7d 100644
--- a/src/channel.h
+++ b/src/channel.h
@@ -7,6 +7,9 @@
 #include <mossrose.h>
 
 
+typedef void (*channel_callback_t)(int channel, void *userdata);
+
+
 struct channel_shared_t {
 	volatile pint active;    /*  boolean */
 	volatile pint paused;    /*  boolean */
@@ -14,6 +17,7 @@ struct channel_shared_t {
 	volatile pint pan_left;  /* -255-255 */
 	volatile pint pan_right; /* -255-255 */
 	volatile pint loops;
+	volatile pint trigger_callback;
 };
 
 
@@ -26,6 +30,9 @@ struct channel_t {
 	PMutex *sound_mutex;
 	struct mossrose_sound_t sound;
 	size_t pos;
+
+	channel_callback_t callback;
+	void *userdata;
 };
 
 
@@ -35,7 +42,10 @@ void channel_pause(struct channel_t *chan);
 void channel_resume(struct channel_t *chan);
 void channel_set_volume(struct channel_t *chan, float volume);
 void channel_set_pan(struct channel_t *chan, float pan_left, float pan_right);
+void channel_set_callback(struct channel_t *chan, channel_callback_t callback, void *userdata);
+void channel_poll_callbacks(struct channel_t *chan, int index);
 int channel_sound_load(struct channel_t *chan, struct mossrose_sound_t *sound, bool force, int loops);
+void channel_update_shared(struct channel_t *chan);
 void channel_get_next_sample(float *left, float *right, struct channel_t *chan);