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thumbnail/waveform generation

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This commit is contained in:
itsmattkc
2018-06-15 20:17:05 -07:00
parent f8ce6c08f8
commit dc8d4728fc
29 changed files with 849 additions and 479 deletions
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effects/volumeeffect.cpp
+4 -4
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@@ -45,11 +45,11 @@ void VolumeEffect::save(QXmlStreamWriter *stream) {
stream->writeTextElement("volume", QString::number(volume_val->value()));
}
void VolumeEffect::process_audio(uint8_t *samples, int nb_bytes) {
void VolumeEffect::process_audio(quint8 *samples, int nb_bytes) {
for (int i=0;i<nb_bytes;i+=2) {
int16_t full_sample = (int16_t) ((samples[i+1] << 8) | samples[i]);
qint16 full_sample = (qint16) ((samples[i+1] << 8) | samples[i]);
full_sample *= volume_val->value()*0.01;
samples[i+1] = (uint8_t) (full_sample >> 8);
samples[i] = (uint8_t) full_sample;
samples[i+1] = (quint8) (full_sample >> 8);
samples[i] = (quint8) full_sample;
}
}