cgl_audio.h

Go to the documentation of this file.

 
#pragma once
 
#include <stddef.h>
 
enum CGL_AUDIO_FMT_T {
    CGL_AUDIO_FMT_PCM = 1,
    CGL_AUDIO_FMT_AC3 = 2,
    CGL_AUDIO_FMT_AAC = 3,
    CGL_AUDIO_FMT_MP3 = 4,
};
 
typedef enum CGL_AUDIO_FMT_T CGL_AUDIO_FMT_T;
 
typedef enum CGL_AUDIO_CHANNEL_T {
    CGL_AUDIO_CH_INDEX_MAIN = 0,
    CGL_AUDIO_CH_INDEX_SUB = 1,
} CGL_AUDIO_CHANNEL_T;
 
typedef enum CGL_AUDIO_SAMPLING_FREQ_T {
    CGL_AUDIO_SAMPLING_FREQ_NONE = 0,
    CGL_AUDIO_SAMPLING_FREQ_4KHZ = 1,
    CGL_AUDIO_SAMPLING_FREQ_8KHZ = 2,
    CGL_AUDIO_SAMPLING_FREQ_11KHZ = 3,
    CGL_AUDIO_SAMPLING_FREQ_12KHZ = 4,
    CGL_AUDIO_SAMPLING_FREQ_16KHZ = 5,
    CGL_AUDIO_SAMPLING_FREQ_22KHZ = 6,
    CGL_AUDIO_SAMPLING_FREQ_24KHZ = 7,
    CGL_AUDIO_SAMPLING_FREQ_32KHZ = 8,
    CGL_AUDIO_SAMPLING_FREQ_44KHZ = 9,
    CGL_AUDIO_SAMPLING_FREQ_48KHZ = 10,
} CGL_AUDIO_SAMPLING_FREQ_T;
 
static inline CGL_AUDIO_SAMPLING_FREQ_T CGL_AUDIO_SAMPLING_FREQ_OF(int hertz) {
    switch (hertz) {
        case 4000:
            return CGL_AUDIO_SAMPLING_FREQ_4KHZ;
        case 8000:
            return CGL_AUDIO_SAMPLING_FREQ_8KHZ;
        case 11025:
            return CGL_AUDIO_SAMPLING_FREQ_11KHZ;
        case 12000:
            return CGL_AUDIO_SAMPLING_FREQ_12KHZ;
        case 16000:
            return CGL_AUDIO_SAMPLING_FREQ_16KHZ;
        case 22050:
            return CGL_AUDIO_SAMPLING_FREQ_22KHZ;
        case 24000:
            return CGL_AUDIO_SAMPLING_FREQ_24KHZ;
        case 32000:
            return CGL_AUDIO_SAMPLING_FREQ_32KHZ;
        case 44100:
            return CGL_AUDIO_SAMPLING_FREQ_44KHZ;
        case 48000:
            return CGL_AUDIO_SAMPLING_FREQ_48KHZ;
        default:
            return CGL_AUDIO_SAMPLING_FREQ_NONE;
    }
}
 
typedef struct CGL_AUDIO_INFO_T {
    CGL_AUDIO_FMT_T codec;
    CGL_AUDIO_CHANNEL_T channel;
    CGL_AUDIO_SAMPLING_FREQ_T samplingFreq;
    unsigned int numberOfChannel;
    unsigned int bitPerSample;
} CGL_AUDIO_INFO_T;
 
int CGL_OpenAudio(const CGL_AUDIO_INFO_T *info);
 
int CGL_PlayAudio(const void *data, size_t size);
 
int CGL_CloseAudio();