Volume control backend.

2 files changed, 18 insertions, 1 deletions

diff --git a/src/engine/client/snd.cpp b/src/engine/client/snd.cpp
index 8cfa51d7..ee563df8 100644
--- a/src/engine/client/snd.cpp
+++ b/src/engine/client/snd.cpp
@@ -11,7 +11,7 @@ static const float NUM_FRAMES_STOP_INV = 1.0f/(float)NUM_FRAMES_STOP;
 static const int NUM_FRAMES_LERP = 512;
 static const float NUM_FRAMES_LERP_INV = 1.0f/(float)NUM_FRAMES_LERP;
 
-static const float GLOBAL_VOLUME_SCALE = 0.75f;
+static float GLOBAL_VOLUME_SCALE = 0.75f;
 
 static const int64 GLOBAL_SOUND_DELAY = 1000;
 
@@ -211,6 +211,21 @@ bool snd_shutdown()
 	return true;
 }
 
+float snd_get_master_volume()
+{
+	return GLOBAL_VOLUME_SCALE;
+}
+
+void snd_set_master_volume(float val)
+{
+	if(val < 0.0f)
+		val = 0.0f;
+	else if(val > 1.0f)
+		val = 1.0f;
+
+	GLOBAL_VOLUME_SCALE = val;
+}
+
 static int snd_alloc_sound()
 {
 	if(first_free_sound < 0)
diff --git a/src/engine/interface.h b/src/engine/interface.h
index 311297de..d23067fb 100644
--- a/src/engine/interface.h
+++ b/src/engine/interface.h
@@ -319,6 +319,8 @@ enum
 };
 	
 bool snd_init();
+float snd_get_master_volume();
+void snd_set_master_volume(float val);
 int snd_load_wav(const char *filename);
 int snd_play(int sound, int loop = SND_PLAY_ONCE, float vol = 1.0f, float pan = 0.0f);
 void snd_stop(int id);