From 2cc0cb436205eb6e2b4448e7d19497ca02b974a0 Mon Sep 17 00:00:00 2001
From: Valerio Santinelli <santinelli@altralogica.it>
Date: Fri, 8 Sep 2023 09:32:44 +0200
Subject: [PATCH] Added a function to get the master volume

---
 example/main.c                   | 10 +++++++---
 src/binocle/core/binocle_audio.c |  4 ++++
 src/binocle/core/binocle_audio.h |  7 +++++++
 3 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/example/main.c b/example/main.c
index b99dbf01..494bff0b 100644
--- a/example/main.c
+++ b/example/main.c
@@ -140,7 +140,7 @@ void main_loop() {
   float dt = binocle_window_get_frame_time(window) / 1000.0f;
 
   binocle_input_update(&input);
-  binocle_audio_update_music_stream(&music);
+  binocle_audio_update_music_stream(&audio, &music);
 
   if (input.resized) {
     kmVec2 oldWindowSize;
@@ -171,10 +171,14 @@ void main_loop() {
   }
 
   if (binocle_input_is_key_pressed(&input, KEY_1)) {
-    binocle_audio_set_master_volume(&audio, audio.master_volume-0.2f);
+    float volume;
+    binocle_audio_get_master_volume(&audio, &volume);
+    binocle_audio_set_master_volume(&audio, volume-0.2f);
   }
   if (binocle_input_is_key_pressed(&input, KEY_2)) {
-    binocle_audio_set_master_volume(&audio, audio.master_volume+0.2f);
+    float volume;
+    binocle_audio_get_master_volume(&audio, &volume);
+    binocle_audio_set_master_volume(&audio, volume+0.2f);
   }
 
   kmVec2 mouse_pos;
diff --git a/src/binocle/core/binocle_audio.c b/src/binocle/core/binocle_audio.c
index 415eb54a..b654f943 100644
--- a/src/binocle/core/binocle_audio.c
+++ b/src/binocle/core/binocle_audio.c
@@ -127,6 +127,10 @@ void binocle_audio_set_master_volume(binocle_audio *audio, float volume) {
   ma_device_set_master_volume(&audio->device, volume);
 }
 
+void binocle_audio_get_master_volume(binocle_audio *audio, float *volume) {
+  ma_device_get_master_volume(&audio->device, volume);
+}
+
 binocle_audio_buffer *binocle_audio_load_audio_buffer(binocle_audio *audio, ma_format format, ma_uint32 channels, ma_uint32 sampleRate, ma_uint32 sizeInFrames, int usage)
 {
   binocle_audio_buffer *audioBuffer = (binocle_audio_buffer *)calloc(1, sizeof(binocle_audio_buffer));
diff --git a/src/binocle/core/binocle_audio.h b/src/binocle/core/binocle_audio.h
index f22c358c..fdac2388 100644
--- a/src/binocle/core/binocle_audio.h
+++ b/src/binocle/core/binocle_audio.h
@@ -262,6 +262,13 @@ bool binocle_audio_is_audio_device_ready(binocle_audio *audio);
  */
 void binocle_audio_set_master_volume(binocle_audio *audio, float volume);
 
+/**
+ * \brief Gets the master volume of the audio system
+ * @param audio the audio system
+ * @param volume a reference to the variable where the volume will be written [0..1]
+ */
+void binocle_audio_get_master_volume(binocle_audio *audio, float *volume);
+
 /**
  * \brief Returns true if the audio buffer is playing
  * @param audio_buffer the audio buffer