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added fill left/right effect

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This commit is contained in:
itsmattkc
2019-01-09 10:05:43 +11:00
parent 607d36115a
commit 6b1bb620c1
6 changed files with 72 additions and 13 deletions
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effects/internal/volumeeffect.cpp
+22 -9
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@@ -19,17 +19,30 @@ VolumeEffect::VolumeEffect(Clip* c, const EffectMeta *em) : Effect(c, em) {
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+=2) {
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);
qint32 samp = (qint16) (((samples[i+1] & 0xFF) << 8) | (samples[i] & 0xFF));
samp *= vol_val;
if (samp > INT16_MAX) {
samp = INT16_MAX;
} else if (samp < INT16_MIN) {
samp = INT16_MIN;
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;
if (left_samp > INT16_MAX) {
left_samp = INT16_MAX;
} else if (left_samp < INT16_MIN) {
left_samp = INT16_MIN;
}
samples[i+1] = (quint8) (samp >> 8);
samples[i] = (quint8) samp;
if (right_samp > INT16_MAX) {
right_samp = INT16_MAX;
} else if (right_samp < INT16_MIN) {
right_samp = INT16_MIN;
}
samples[i+3] = (quint8) (right_samp >> 8);
samples[i+2] = (quint8) right_samp;
samples[i+1] = (quint8) (left_samp >> 8);
samples[i] = (quint8) left_samp;
}
}