Initial Commit

thirdparty/miniaudio-0.11.24/examples/simple_playback.c

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