51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
#include "audio_effect_amplify.h"
|
|
|
|
|
|
void AudioEffectAmplifyInstance::process(const AudioFrame *p_src_frames,AudioFrame *p_dst_frames,int p_frame_count) {
|
|
|
|
|
|
//multiply volume interpolating to avoid clicks if this changes
|
|
float volume_db = base->volume_db;
|
|
float vol = Math::db2linear(mix_volume_db);
|
|
float vol_inc = (Math::db2linear(volume_db) - vol)/float(p_frame_count);
|
|
|
|
for(int i=0;i<p_frame_count;i++) {
|
|
p_dst_frames[i]=p_src_frames[i]*vol;
|
|
vol+=vol_inc;
|
|
}
|
|
//set volume for next mix
|
|
mix_volume_db = volume_db;
|
|
|
|
}
|
|
|
|
|
|
Ref<AudioEffectInstance> AudioEffectAmplify::instance() {
|
|
Ref<AudioEffectAmplifyInstance> ins;
|
|
ins.instance();
|
|
ins->base=Ref<AudioEffectAmplify>(this);
|
|
ins->mix_volume_db=volume_db;
|
|
return ins;
|
|
}
|
|
|
|
void AudioEffectAmplify::set_volume_db(float p_volume) {
|
|
volume_db=p_volume;
|
|
}
|
|
|
|
float AudioEffectAmplify::get_volume_db() const {
|
|
|
|
return volume_db;
|
|
}
|
|
|
|
void AudioEffectAmplify::_bind_methods() {
|
|
|
|
ClassDB::bind_method(_MD("set_volume_db","volume"),&AudioEffectAmplify::set_volume_db);
|
|
ClassDB::bind_method(_MD("get_volume_db"),&AudioEffectAmplify::get_volume_db);
|
|
|
|
ADD_PROPERTY(PropertyInfo(Variant::REAL,"volume_db",PROPERTY_HINT_RANGE,"-80,24,0.01"),"set_volume_db","get_volume_db");
|
|
}
|
|
|
|
AudioEffectAmplify::AudioEffectAmplify()
|
|
{
|
|
volume_db=0;
|
|
}
|