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made volume effect use decibels

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This commit is contained in:
itsmattkc
2019-02-09 22:09:42 -08:00
parent 95ed9617b2
commit ca4e39449b
14 changed files with 117 additions and 33 deletions
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effects/internal/volumeeffect.cpp
+6 -6
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@@ -10,20 +10,20 @@
VolumeEffect::VolumeEffect(Clip* c, const EffectMeta *em) : Effect(c, em) {
EffectRow* volume_row = add_row(tr("Volume"));
volume_val = volume_row->add_field(EFFECT_FIELD_DOUBLE, "volume");
volume_val->set_double_minimum_value(0);
volume_val = volume_row->add_field(EFFECT_FIELD_DOUBLE, "volume");
// set defaults
volume_val->set_double_default_value(100);
volume_val->set_double_default_value(1);
static_cast<LabelSlider*>(volume_val->get_ui_element())->set_display_type(LABELSLIDER_DECIBEL);
}
void VolumeEffect::process_audio(double timecode_start, double timecode_end, quint8* samples, int nb_bytes, int) {
double interval = (timecode_end-timecode_start)/nb_bytes;
for (int i=0;i<nb_bytes;i+=4) {
double vol_val = log_volume(volume_val->get_double_value(timecode_start+(interval*i), true)*0.01);
double vol_val = log_volume(volume_val->get_double_value(timecode_start+(interval*i), true));
qint32 right_samp = (qint16) (((samples[i+3] & 0xFF) << 8) | (samples[i+2] & 0xFF));
qint32 left_samp = (qint16) (((samples[i+1] & 0xFF) << 8) | (samples[i] & 0xFF));
qint32 right_samp = qint16(((samples[i+3] & 0xFF) << 8) | (samples[i+2] & 0xFF));
qint32 left_samp = qint16(((samples[i+1] & 0xFF) << 8) | (samples[i] & 0xFF));
left_samp *= vol_val;
right_samp *= vol_val;