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Prepare for region polarity inversion (using negative gain)

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Robin Gareus 2022-12-17 13:12:22 +01:00
parent 37d6f1026a
commit 5b52aa956f
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2 changed files with 8 additions and 2 deletions
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8
libs/ardour/audioregion.cc
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@ -447,7 +447,13 @@ AudioRegion::read_peaks (PeakData *buf, samplecnt_t npeaks, samplecnt_t offset,
return 0; return 0;
} }
if (_scale_amplitude != 1.0f) { if (_scale_amplitude < 0.f) {
for (samplecnt_t n = 0; n < npeaks; ++n) {
const float tmp = buf[n].max;
buf[n].max = _scale_amplitude * buf[n].min;
buf[n].min = _scale_amplitude * tmp;
}
} else if (_scale_amplitude != 1.0f) {
for (samplecnt_t n = 0; n < npeaks; ++n) { for (samplecnt_t n = 0; n < npeaks; ++n) {
buf[n].max *= _scale_amplitude; buf[n].max *= _scale_amplitude;
buf[n].min *= _scale_amplitude; buf[n].min *= _scale_amplitude;

2
libs/waveview/wave_view.cc
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@ -483,7 +483,7 @@ WaveView::draw_image (Cairo::RefPtr<Cairo::ImageSurface>& image, PeakData* peaks
has been scaled by scale_amplitude() already. has been scaled by scale_amplitude() already.
*/ */
const double clip_level = _global_clip_level * req->image->props.amplitude; const double clip_level = _global_clip_level * fabs (req->image->props.amplitude);
const Shape shape = req->image->props.shape; const Shape shape = req->image->props.shape;
const bool logscaled = req->image->props.logscaled; const bool logscaled = req->image->props.logscaled;