rhino/demo/c/dr_libs/tests/wav/dr_wav_playback.c

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#define MA_NO_DECODING
#define MA_NO_ENCODING
#define MA_IMPLEMENTATION
#include "../../../miniaudio/miniaudio.h"
 
#define DR_WAV_IMPLEMENTATION
#include "../../dr_wav.h"
#include "../common/dr_common.c"
 
drwav g_wav;
 
void data_callback(ma_device* pDevice, void* pOutput, const void* pInput, ma_uint32 frameCount)
{
    /* Assuming format is always s16 for now. */
    if (pDevice->playback.format == ma_format_s16) {
        drwav_read_pcm_frames_s16(&g_wav, frameCount, (drwav_int16*)pOutput);
    } else if (pDevice->playback.format == ma_format_f32) {
        drwav_read_pcm_frames_f32(&g_wav, frameCount, (float*)pOutput);
    } else {
        /* Unsupported format. */
    }
 
    (void)pInput;
}
 
int main(int argc, char** argv)
{
    ma_result result;
    ma_device device;
    ma_device_config deviceConfig;
 
    if (argc < 2) {
        printf("No input file specified.");
        return -1;
    }
 
    if (!drwav_init_file(&g_wav, argv[1], NULL)) {
        printf("Failed to load file: %s", argv[1]);
        return -1;
    }
 
    deviceConfig = ma_device_config_init(ma_device_type_playback);
    deviceConfig.playback.format   = ma_format_s16;
    deviceConfig.playback.channels = g_wav.channels;
    deviceConfig.sampleRate        = g_wav.sampleRate;
    deviceConfig.dataCallback      = data_callback;
 
    result = ma_device_init(NULL, &deviceConfig, &device);
    if (result != MA_SUCCESS) {
        printf("Failed to initialize playback device.");
        drwav_uninit(&g_wav);
        return -1;
    }
 
    result = ma_device_start(&device);
    if (result != MA_SUCCESS) {
        printf("Failed to start playback device.");
        ma_device_uninit(&device);
        drwav_uninit(&g_wav);
        return -1;
    }
 
    printf("Press Enter to quit...");
    getchar();
 
    ma_device_uninit(&device);
    drwav_uninit(&g_wav);
 
    return 0;
}