miniaudio/examples/multi_playback.c

#define _CRT_SECURE_NO_WARNINGS

#define DR_FLAC_IMPLEMENTATION
#include "../extras/dr_flac.h"

#define DR_WAV_IMPLEMENTATION
#include "../extras/dr_wav.h"

#include "../extras/stb_vorbis.c"

#define JAR_MOD_IMPLEMENTATION
#include "../extras/jar_mod.h"
#undef DEBUG

#define JAR_XM_IMPLEMENTATION
#include "../extras/jar_xm.h"

#define MAL_IMPLEMENTATION
#include "../mini_al.h"

#include <stdio.h>

mal_uint32 on_send_flac_frames_to_device(mal_device* pDevice, mal_uint32 frameCount, void* pSamples)
{
	drflac* pFlac = (drflac*)pDevice->pUserData;
	if (pFlac == NULL) {
		return 0;
	}
	
	return (mal_uint32)drflac_read_s16(pFlac, frameCount * pDevice->channels, (mal_int16*)pSamples) / pDevice->channels;
}

mal_uint32 on_send_wav_frames_to_device(mal_device* pDevice, mal_uint32 frameCount, void* pSamples)
{
	drwav* pWav = (drwav*)pDevice->pUserData;
	if (pWav == NULL) {
		return 0;
	}
	
	return (mal_uint32)drwav_read_s16(pWav, frameCount * pDevice->channels, (mal_int16*)pSamples) / pDevice->channels;
}

mal_uint32 on_send_vorbis_frames_to_device(mal_device* pDevice, mal_uint32 frameCount, void* pSamples)
{
	stb_vorbis* pVorbis = (stb_vorbis*)pDevice->pUserData;
	if (pVorbis == NULL) {
		return 0;
	}

    return (mal_uint32)stb_vorbis_get_samples_short_interleaved(pVorbis, pDevice->channels, (short*)pSamples, frameCount * pDevice->channels) / pDevice->channels;
}

mal_uint32 on_send_mod_frames_to_device(mal_device* pDevice, mal_uint32 frameCount, void* pSamples)
{
	jar_mod_context_t* pMod = (jar_mod_context_t*)pDevice->pUserData;
	if (pMod == NULL) {
		return 0;
	}
	
	jar_mod_fillbuffer(pMod, (mal_int16*)pSamples, frameCount, 0);
	return frameCount;
}

mal_uint32 on_send_xm_frames_to_device(mal_device* pDevice, mal_uint32 frameCount, void* pSamples)
{
	jar_xm_context_t* pXM = (jar_xm_context_t*)pDevice->pUserData;
	if (pXM == NULL) {
		return 0;
	}
	
	jar_xm_generate_samples_16bit(pXM, (short*)pSamples, frameCount);
	return frameCount;
}

int main(int argc, char** argv)
{
	int exitcode = 0;

	if (argc < 2) {
		printf("No input file.");
		return -1;
	}

	enum { UNK, FLAC, WAV, VORBIS, MOD, XM } type = UNK;

	jar_mod_context_t mod;
	jar_mod_init(&mod);

	jar_xm_context_t *xm = 0;

    drflac* flac = NULL;
	drwav* wav = NULL;
    stb_vorbis* vorbis = NULL;
    if ( type == UNK && (flac = drflac_open_file(argv[1])) != NULL)                       type = FLAC;
	if ( type == UNK && (wav = drwav_open_file(argv[1])) != NULL)                         type = WAV;
    if ( type == UNK && (vorbis = stb_vorbis_open_filename(argv[1], NULL, NULL)) != NULL) type = VORBIS;
	if ( type == UNK && (jar_xm_create_context_from_file(&xm, 48000, argv[1]) == 0))      type = XM;
	if ( type == UNK && (jar_mod_load_file(&mod, argv[1]) != 0) )                         type = MOD;

	if( type == UNK ) {
		printf("Not a valid input file.");
		exitcode = -2;
		goto end;
	}

	mal_context context;
	if (mal_context_init(NULL, 0, NULL, &context) != MAL_SUCCESS) {
		printf("Failed to initialize context.");
		exitcode = -3;
		goto end;
	}

    void* pUserData = NULL;
	mal_device_config config;
    switch (type)
    {
        case FLAC:
            config = mal_device_config_init_playback(mal_format_s16, flac->channels, flac->sampleRate, on_send_flac_frames_to_device);
            pUserData = flac;
            break;

        case WAV:
            config = mal_device_config_init_playback(mal_format_s16, wav->channels, wav->sampleRate, on_send_wav_frames_to_device);
            pUserData = wav;
            break;

        case VORBIS:
            config = mal_device_config_init_playback(mal_format_s16, vorbis->channels, vorbis->sample_rate, on_send_vorbis_frames_to_device);
            pUserData = vorbis;
            break;

        case MOD:
            config = mal_device_config_init_playback(mal_format_s16, 2, mod.playrate, on_send_mod_frames_to_device);
            pUserData = &mod;
            break;

        case XM:
            config = mal_device_config_init_playback(mal_format_s16, 2, 48000, on_send_xm_frames_to_device);
            pUserData = xm;
            break;
    }

	mal_device device;
	if (mal_device_init(&context, mal_device_type_playback, NULL, &config, pUserData, &device) != MAL_SUCCESS) {
		printf("Failed to open playback device.");
		mal_context_uninit(&context);
		exitcode = -4;
		goto end;
	}

	if (mal_device_start(&device) != MAL_SUCCESS) {
        printf("Failed to start playback device.\n");
        mal_device_uninit(&device);
        mal_context_uninit(&context);
		exitcode = -4;
		goto end;
    }
	
	printf("Press Enter to quit...");
	getchar();
	
	mal_device_uninit(&device);
	mal_context_uninit(&context);

end:;
    drflac_close(flac);
	drwav_close(wav);
    stb_vorbis_close(vorbis);
	jar_mod_unload(&mod);
	if(xm) jar_xm_free_context(xm);
	
	return exitcode;
}