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reindent; remove unneccessary double loop
+29
-34
+29
-34
src/ext/fft.c
+29
-34
src/ext/fft.c
···
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bool FFT_GetFFT(float* _samples)
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{
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kiss_fft_cpx out[FFT_SIZE + 1];
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kiss_fftr(fftcfg, sampleBuf, out);
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kiss_fft_cpx out[FFT_SIZE + 1];
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kiss_fftr(fftcfg, sampleBuf, out);
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bool bPeakNormalization = true;
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if (bPeakNormalization) {
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float peakValue = fPeakMinValue;
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for (int i = 0; i < FFT_SIZE; i++)
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{
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float val = 2.0f * sqrtf(out[i].r * out[i].r + out[i].i * out[i].i);
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if (val > peakValue) peakValue = val;
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}
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if (peakValue > fPeakSmoothValue) {
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fPeakSmoothValue = peakValue;
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}
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if (peakValue < fPeakSmoothValue) {
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fPeakSmoothValue = fPeakSmoothValue * fPeakSmoothing + peakValue * (1 - fPeakSmoothing);
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}
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fAmplification = 1.0f / fPeakSmoothValue;
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for (int i = 0; i < FFT_SIZE; i++)
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{
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float val = 2.0f * sqrtf(out[i].r * out[i].r + out[i].i * out[i].i);
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_samples[i] = val * fAmplification;
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}
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float fFFTSmoothingFactor = 0.9;
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for ( int i = 0; i < FFT_SIZE; i++ )
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{
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_samples[i] = _samples[i] * fFFTSmoothingFactor + (1 - fFFTSmoothingFactor) * _samples[i];
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}
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} else {
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for (int i = 0; i < FFT_SIZE; i++)
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{
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static const float scaling = 1.0f / (float)FFT_SIZE;
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_samples[i] = 2.0f * sqrtf(out[i].r * out[i].r + out[i].i * out[i].i) * scaling * fAmplification;
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}
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bool bPeakNormalization = true;
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if (bPeakNormalization) {
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float peakValue = fPeakMinValue;
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for (int i = 0; i < FFT_SIZE; i++)
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{
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float val = 2.0f * sqrtf(out[i].r * out[i].r + out[i].i * out[i].i);
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if (val > peakValue) peakValue = val;
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_samples[i] = val * fAmplification;
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}
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if (peakValue > fPeakSmoothValue) {
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fPeakSmoothValue = peakValue;
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}
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if (peakValue < fPeakSmoothValue) {
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fPeakSmoothValue = fPeakSmoothValue * fPeakSmoothing + peakValue * (1 - fPeakSmoothing);
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}
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fAmplification = 1.0f / fPeakSmoothValue;
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float fFFTSmoothingFactor = 0.9;
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for ( int i = 0; i < FFT_SIZE; i++ )
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{
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_samples[i] = _samples[i] * fFFTSmoothingFactor + (1 - fFFTSmoothingFactor) * _samples[i];
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}
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} else {
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for (int i = 0; i < FFT_SIZE; i++)
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{
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static const float scaling = 1.0f / (float)FFT_SIZE;
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_samples[i] = 2.0f * sqrtf(out[i].r * out[i].r + out[i].i * out[i].i) * scaling * fAmplification;
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}
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}
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return true;
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}