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Add support for pink noise.

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This commit is contained in:
David Reid
2020-02-24 20:22:14 +10:00
parent b1c4cfe5cc
commit cf3fd4876f
2 changed files with 148 additions and 16 deletions
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tests/test_generation/ma_test_generation_noise.c
+15 -15
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@@ -1,41 +1,36 @@
static drwav_data_format drwav_data_format_from_noise_config(const ma_noise_config* pNoiseConfig)
{
MA_ASSERT(pNoiseConfig != NULL);
return drwav_data_format_from_minaudio_format(pNoiseConfig->format, pNoiseConfig->channels, 48000);
}
ma_result test_noise__by_format_and_type(ma_format format, ma_waveform_type type, const char* pFileName)
{
ma_result result;
ma_noise_config noiseConfig;
ma_noise noise;
drwav_data_format wavFormat;
drwav wav;
ma_encoder_config encoderConfig;
ma_encoder encoder;
ma_uint32 iFrame;
printf(" %s\n", pFileName);
noiseConfig = ma_noise_config_init(format, 2, type, 0, 0.1);
noiseConfig = ma_noise_config_init(format, 1, type, 0, 0.1);
result = ma_noise_init(&noiseConfig, &noise);
if (result != MA_SUCCESS) {
return result;
}
wavFormat = drwav_data_format_from_noise_config(&noiseConfig);
if (!drwav_init_file_write(&wav, pFileName, &wavFormat, NULL)) {
return MA_ERROR; /* Could not open file for writing. */
encoderConfig = ma_encoder_config_init(ma_resource_format_wav, format, noiseConfig.channels, 48000);
result = ma_encoder_init_file(pFileName, &encoderConfig, &encoder);
if (result != MA_SUCCESS) {
return result;
}
/* We'll do a few seconds of data. */
for (iFrame = 0; iFrame < wavFormat.sampleRate * 10; iFrame += 1) {
for (iFrame = 0; iFrame < encoder.config.sampleRate * 10; iFrame += 1) {
ma_uint8 temp[1024];
ma_noise_read_pcm_frames(&noise, temp, 1);
drwav_write_pcm_frames(&wav, 1, temp);
ma_encoder_write_pcm_frames(&encoder, temp, 1);
}
drwav_uninit(&wav);
ma_encoder_uninit(&encoder);
return MA_SUCCESS;
}
@@ -49,6 +44,11 @@ ma_result test_noise__f32()
hasError = MA_TRUE;
}
result = test_noise__by_format_and_type(ma_format_f32, ma_noise_type_pink, "output/noise_f32_pink.wav");
if (result != MA_SUCCESS) {
hasError = MA_TRUE;
}
if (hasError) {
return MA_ERROR;
} else {