76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
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/*
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Demonstrates how to load a sound file and play it back using the low-level API.
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The low-level API uses a callback to deliver audio between the application and miniaudio for playback or recording. When
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in playback mode, as in this example, the application sends raw audio data to miniaudio which is then played back through
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the default playback device as defined by the operating system.
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This example uses the `ma_decoder` API to load a sound and play it back. The decoder is entirely decoupled from the
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device and can be used independently of it. This example only plays back a single sound file, but it's possible to play
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back multiple files by simple loading multiple decoders and mixing them (do not create multiple devices to do this). See
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the simple_mixing example for how best to do this.
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*/
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#define MINIAUDIO_IMPLEMENTATION
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#include "../miniaudio.h"
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#include <stdio.h>
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void data_callback(ma_device* pDevice, void* pOutput, const void* pInput, ma_uint32 frameCount)
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{
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ma_decoder* pDecoder = (ma_decoder*)pDevice->pUserData;
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if (pDecoder == NULL) {
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return;
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}
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ma_decoder_read_pcm_frames(pDecoder, pOutput, frameCount, NULL);
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(void)pInput;
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}
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int main(int argc, char** argv)
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{
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ma_result result;
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ma_decoder decoder;
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ma_device_config deviceConfig;
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ma_device device;
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if (argc < 2) {
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printf("No input file.\n");
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return -1;
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}
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result = ma_decoder_init_file(argv[1], NULL, &decoder);
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if (result != MA_SUCCESS) {
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printf("Could not load file: %s\n", argv[1]);
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return -2;
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}
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deviceConfig = ma_device_config_init(ma_device_type_playback);
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deviceConfig.playback.format = decoder.outputFormat;
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deviceConfig.playback.channels = decoder.outputChannels;
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deviceConfig.sampleRate = decoder.outputSampleRate;
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deviceConfig.dataCallback = data_callback;
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deviceConfig.pUserData = &decoder;
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if (ma_device_init(NULL, &deviceConfig, &device) != MA_SUCCESS) {
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printf("Failed to open playback device.\n");
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ma_decoder_uninit(&decoder);
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return -3;
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}
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if (ma_device_start(&device) != MA_SUCCESS) {
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printf("Failed to start playback device.\n");
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ma_device_uninit(&device);
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ma_decoder_uninit(&decoder);
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return -4;
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}
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printf("Press Enter to quit...");
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getchar();
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ma_device_uninit(&device);
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ma_decoder_uninit(&decoder);
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return 0;
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}
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