diff options
Diffstat (limited to 'src/audio.h')
| -rw-r--r-- | src/audio.h | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/src/audio.h b/src/audio.h index ed156532..9c681044 100644 --- a/src/audio.h +++ b/src/audio.h @@ -41,7 +41,9 @@ //---------------------------------------------------------------------------------- #ifndef __cplusplus // Boolean type -typedef enum { false, true } bool; + #ifndef true + typedef enum { false, true } bool; + #endif #endif // Sound source type @@ -59,6 +61,11 @@ 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; + #ifdef __cplusplus extern "C" { // Prevents name mangling of functions #endif @@ -73,6 +80,14 @@ extern "C" { // Prevents name mangling of functions //---------------------------------------------------------------------------------- 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 @@ -92,7 +107,7 @@ void PauseMusicStream(void); // Pause music p void ResumeMusicStream(void); // Resume playing paused music bool MusicIsPlaying(void); // Check if music is playing void SetMusicVolume(float volume); // Set volume for music (1.0 is max level) -float GetMusicTimeLength(void); // Get current music time length (in seconds) +float GetMusicTimeLength(void); // Get music time length (in seconds) float GetMusicTimePlayed(void); // Get current music time played (in seconds) #ifdef __cplusplus |