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spectrum only aggregate magnitude/phase if user asks for it

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This commit is contained in:
Stefan Kost 2010-08-11 15:48:18 +03:00
parent 0dca0becb2
commit 77fe8c151a
1 changed files with 17 additions and 13 deletions
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30
gst/spectrum/gstspectrum.c
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@ -623,21 +623,25 @@ gst_spectrum_transform_ip (GstBaseTransform * trans, GstBuffer * buffer)
gst_fft_f32_fft (fft_ctx, input_tmp, freqdata);
spectrum->num_fft++;
/* Calculate magnitude in db */
for (i = 0; i < bands; i++) {
gdouble val = 0.0;
val = freqdata[i].r * freqdata[i].r;
val += freqdata[i].i * freqdata[i].i;
val /= nfft * nfft;
val = 10.0 * log10 (val);
if (val < threshold)
val = threshold;
spect_magnitude[i] += val;
if (spectrum->message_magnitude) {
gdouble val;
/* Calculate magnitude in db */
for (i = 0; i < bands; i++) {
val = freqdata[i].r * freqdata[i].r;
val += freqdata[i].i * freqdata[i].i;
val /= nfft * nfft;
val = 10.0 * log10 (val);
if (val < threshold)
val = threshold;
spect_magnitude[i] += val;
}
}
/* Calculate phase */
for (i = 0; i < bands; i++)
spect_phase[i] += atan2 (freqdata[i].i, freqdata[i].r);
if (spectrum->message_phase) {
/* Calculate phase */
for (i = 0; i < bands; i++)
spect_phase[i] += atan2 (freqdata[i].i, freqdata[i].r);
}
}
/* Do we have the FFTs for one interval? */