Merge pull request #111 from kd7tck/develop

First stage of audio API update

1 files changed, 13 insertions, 0 deletions

diff --git a/src/raylib.h b/src/raylib.h
index 699fbbdb..8390d176 100644
--- a/src/raylib.h
+++ b/src/raylib.h
@@ -446,6 +446,11 @@ typedef struct Wave {
     short channels;
 } Wave;
 
+// Audio Context, used to create custom audio streams that are not bound to a sound file. There can be
+// no more than 4 concurrent audio contexts in use. This is due to each active context being tied to
+// a dedicated mix channel.
+typedef void* AudioContext;
+
 // Texture formats
 // NOTE: Support depends on OpenGL version and platform
 typedef enum {
@@ -863,6 +868,14 @@ void DrawPhysicObjectInfo(PhysicObject *pObj, Vector2 position, int fontSize);
 //------------------------------------------------------------------------------------
 void InitAudioDevice(void);                                     // Initialize audio device and context
 void CloseAudioDevice(void);                                    // Close the audio device and context (and music stream)
+bool IsAudioDeviceReady(void);                                  // True if call to InitAudioDevice() was successful and CloseAudioDevice() has not been called yet
+
+// Audio contexts are for outputing custom audio waveforms, This will shut down any other sound sources currently playing
+// The mixChannel is what mix channel you want to operate on, 0-3 are the ones available. Each mix channel can only be used one at a time.
+// exmple usage is InitAudioContext(48000, 16, 0, 2); // stereo, mixchannel 1, 16bit, 48khz
+AudioContext InitAudioContext(unsigned short sampleRate, unsigned char bitsPerSample, unsigned char mixChannel, unsigned char channels);
+void CloseAudioContext(AudioContext ctx);                       // Frees audio context
+void UpdateAudioContext(AudioContext ctx, void *data, unsigned short *dataLength); // Pushes more audio data into context mix channel, if none are ever pushed then zeros are fed in
 
 Sound LoadSound(char *fileName);                                // Load sound to memory
 Sound LoadSoundFromWave(Wave wave);                             // Load sound to memory from wave data