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Convert InputSource to SampleSource interface

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This commit is contained in:
Mike Walters
2015-11-08 20:43:13 +00:00
committed by Mike
parent 7c7ff6edd6
commit c83892d432
6 changed files with 20 additions and 20 deletions
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12
spectrogram.cpp
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@@ -143,19 +143,19 @@ float* Spectrogram::getFFTTile(off_t tile)
void Spectrogram::getLine(float *dest, off_t sample)
{
if (inputSource && fft) {
fftwf_complex buffer[fftSize];
std::complex<float> buffer[fftSize];
inputSource->getSamples(buffer, sample, fftSize);
for (int i = 0; i < fftSize; i++) {
buffer[i][0] *= window[i];
buffer[i][1] *= window[i];
buffer[i].real(buffer[i].real() * window[i]);
buffer[i].imag(buffer[i].imag() * window[i]);
}
fft->process(buffer, buffer);
for (int i = 0; i < fftSize; i++) {
int k = (i + fftSize / 2) % fftSize;
float re = buffer[k][0];
float im = buffer[k][1];
float re = buffer[k].real();
float im = buffer[k].imag();
float mag = sqrt(re * re + im * im) / fftSize;
float magdb = 10 * log2(mag) / log2(10);
*dest = magdb;
@@ -227,7 +227,7 @@ int Spectrogram::getHeight()
if (!inputSource)
return 0;
return inputSource->getSampleCount() / getStride();
return inputSource->count() / getStride();
}
int Spectrogram::getStride()