diff options
Diffstat (limited to 'src/audio.h')
| -rw-r--r-- | src/audio.h | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/src/audio.h b/src/audio.h index ed156532..401edc3e 100644 --- a/src/audio.h +++ b/src/audio.h @@ -41,8 +41,12 @@ //---------------------------------------------------------------------------------- #ifndef __cplusplus // Boolean type -typedef enum { false, true } bool; + #ifndef true + typedef enum { false, true } bool; + #endif #endif +typedef enum { silence, mono, stereo } channel_t; +typedef enum { mixA, mixB, mixC, mixD } mix_t; // Used for mixing/muxing up to four diferent audio streams // Sound source type typedef struct Sound { @@ -59,6 +63,16 @@ 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 struct AudioContext { + unsigned short sampleRate; // default is 48000 + unsigned char bitsPerSample; // 16 is default + mix_t mixChannel; // 0-3 or mixA-mixD, each mix channel can receive up to one dedicated audio stream + channel_t channels; // 1=mono, 2=stereo +} AudioContext; + #ifdef __cplusplus extern "C" { // Prevents name mangling of functions #endif @@ -73,6 +87,13 @@ 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 AudioDeviceReady(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 mix_t is what mix channel you want to operate on, mixA->mixD are the ones available. Each mix channel can only be used one at a time. +// exmple usage is InitAudioContext(48000, 16, mixA, stereo); +AudioContext* InitAudioContext(unsigned short sampleRate, unsigned char bitsPerSample, mix_t mixChannel, channel_t channels); +void CloseAudioContext(AudioContext *ctx); // Frees audio context Sound LoadSound(char *fileName); // Load sound to memory Sound LoadSoundFromWave(Wave wave); // Load sound to memory from wave data @@ -92,7 +113,7 @@ 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 |