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spectrum: only scale the vectors that we are processing

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Phase is not produced by default, so lets not scale it unconditionally to save a
few cycles.
This commit is contained in:
Stefan Kost 2011-03-10 14:12:01 +02:00
parent 5bf267c485
commit f1785b0e4a
1 changed files with 9 additions and 5 deletions
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14
gst/spectrum/gstspectrum.c
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@ -889,13 +889,17 @@ gst_spectrum_prepare_message_data (GstSpectrum * spectrum,
guint i;
guint bands = spectrum->bands;
guint num_fft = spectrum->num_fft;
gfloat *spect_magnitude = cd->spect_magnitude;
gfloat *spect_phase = cd->spect_phase;
/* Calculate average */
for (i = 0; i < bands; i++) {
spect_magnitude[i] /= num_fft;
spect_phase[i] /= num_fft;
if (spectrum->message_magnitude) {
gfloat *spect_magnitude = cd->spect_magnitude;
for (i = 0; i < bands; i++)
spect_magnitude[i] /= num_fft;
}
if (spectrum->message_phase) {
gfloat *spect_phase = cd->spect_phase;
for (i = 0; i < bands; i++)
spect_phase[i] /= num_fft;
}
}