149 lines
3.8 KiB
C++
149 lines
3.8 KiB
C++
#include "audio_effect_phaser.h"
|
|
#include "servers/audio_server.h"
|
|
#include "math_funcs.h"
|
|
|
|
void AudioEffectPhaserInstance::process(const AudioFrame *p_src_frames,AudioFrame *p_dst_frames,int p_frame_count) {
|
|
|
|
float sampling_rate = AudioServer::get_singleton()->get_mix_rate();
|
|
|
|
float dmin = base->range_min / (sampling_rate/2.0);
|
|
float dmax = base->range_max / (sampling_rate/2.0);
|
|
|
|
float increment = 2.f * Math_PI * (base->rate / sampling_rate);
|
|
|
|
for(int i=0;i<p_frame_count;i++) {
|
|
|
|
phase += increment;
|
|
|
|
while ( phase >= Math_PI * 2.f ) {
|
|
phase -= Math_PI * 2.f;
|
|
}
|
|
|
|
float d = dmin + (dmax-dmin) * ((sin( phase ) + 1.f)/2.f);
|
|
|
|
|
|
//update filter coeffs
|
|
for( int j=0; j<6; j++ ) {
|
|
allpass[0][j].delay( d );
|
|
allpass[1][j].delay( d );
|
|
}
|
|
|
|
//calculate output
|
|
float y = allpass[0][0].update(
|
|
allpass[0][1].update(
|
|
allpass[0][2].update(
|
|
allpass[0][3].update(
|
|
allpass[0][4].update(
|
|
allpass[0][5].update( p_src_frames[i].l + h.l * base->feedback ))))));
|
|
h.l=y;
|
|
|
|
p_dst_frames[i].l = p_src_frames[i].l + y * base->depth;
|
|
|
|
y = allpass[1][0].update(
|
|
allpass[1][1].update(
|
|
allpass[1][2].update(
|
|
allpass[1][3].update(
|
|
allpass[1][4].update(
|
|
allpass[1][5].update( p_src_frames[i].r + h.r * base->feedback ))))));
|
|
h.r=y;
|
|
|
|
p_dst_frames[i].r = p_src_frames[i].r + y * base->depth;
|
|
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
Ref<AudioEffectInstance> AudioEffectPhaser::instance() {
|
|
Ref<AudioEffectPhaserInstance> ins;
|
|
ins.instance();
|
|
ins->base=Ref<AudioEffectPhaser>(this);
|
|
ins->phase=0;
|
|
ins->h=AudioFrame(0,0);
|
|
|
|
return ins;
|
|
}
|
|
|
|
|
|
void AudioEffectPhaser::set_range_min_hz(float p_hz) {
|
|
|
|
range_min=p_hz;
|
|
}
|
|
|
|
float AudioEffectPhaser::get_range_min_hz() const{
|
|
|
|
return range_min;
|
|
}
|
|
|
|
void AudioEffectPhaser::set_range_max_hz(float p_hz){
|
|
|
|
range_max=p_hz;
|
|
}
|
|
float AudioEffectPhaser::get_range_max_hz() const{
|
|
|
|
return range_max;
|
|
}
|
|
|
|
void AudioEffectPhaser::set_rate_hz(float p_hz){
|
|
|
|
rate=p_hz;
|
|
}
|
|
float AudioEffectPhaser::get_rate_hz() const{
|
|
|
|
return rate;
|
|
}
|
|
|
|
void AudioEffectPhaser::set_feedback(float p_fbk){
|
|
|
|
feedback=p_fbk;
|
|
}
|
|
float AudioEffectPhaser::get_feedback() const{
|
|
|
|
return feedback;
|
|
}
|
|
|
|
void AudioEffectPhaser::set_depth(float p_depth) {
|
|
|
|
depth=p_depth;
|
|
}
|
|
|
|
float AudioEffectPhaser::get_depth() const {
|
|
|
|
return depth;
|
|
}
|
|
|
|
void AudioEffectPhaser::_bind_methods() {
|
|
|
|
ClassDB::bind_method(_MD("set_range_min_hz","hz"),&AudioEffectPhaser::set_range_min_hz);
|
|
ClassDB::bind_method(_MD("get_range_min_hz"),&AudioEffectPhaser::get_range_min_hz);
|
|
|
|
ClassDB::bind_method(_MD("set_range_max_hz","hz"),&AudioEffectPhaser::set_range_max_hz);
|
|
ClassDB::bind_method(_MD("get_range_max_hz"),&AudioEffectPhaser::get_range_max_hz);
|
|
|
|
ClassDB::bind_method(_MD("set_rate_hz","hz"),&AudioEffectPhaser::set_rate_hz);
|
|
ClassDB::bind_method(_MD("get_rate_hz"),&AudioEffectPhaser::get_rate_hz);
|
|
|
|
ClassDB::bind_method(_MD("set_feedback","fbk"),&AudioEffectPhaser::set_feedback);
|
|
ClassDB::bind_method(_MD("get_feedback"),&AudioEffectPhaser::get_feedback);
|
|
|
|
ClassDB::bind_method(_MD("set_depth","depth"),&AudioEffectPhaser::set_depth);
|
|
ClassDB::bind_method(_MD("get_depth"),&AudioEffectPhaser::get_depth);
|
|
|
|
ADD_PROPERTY(PropertyInfo(Variant::REAL,"range_min_hz",PROPERTY_HINT_RANGE,"10,10000"),_SCS("set_range_min_hz"),_SCS("get_range_min_hz"));
|
|
ADD_PROPERTY(PropertyInfo(Variant::REAL,"range_max_hz",PROPERTY_HINT_RANGE,"10,10000"),_SCS("set_range_max_hz"),_SCS("get_range_max_hz"));
|
|
ADD_PROPERTY(PropertyInfo(Variant::REAL,"rate_hz",PROPERTY_HINT_RANGE,"0.01,20"),_SCS("set_rate_hz"),_SCS("get_rate_hz"));
|
|
ADD_PROPERTY(PropertyInfo(Variant::REAL,"feedback",PROPERTY_HINT_RANGE,"0.1,0.9,0.1"),_SCS("set_feedback"),_SCS("get_feedback"));
|
|
ADD_PROPERTY(PropertyInfo(Variant::REAL,"depth",PROPERTY_HINT_RANGE,"0.1,4,0.1"),_SCS("set_depth"),_SCS("get_depth"));
|
|
|
|
}
|
|
|
|
AudioEffectPhaser::AudioEffectPhaser()
|
|
{
|
|
range_min=440;
|
|
range_max=1600;
|
|
rate=0.5;
|
|
feedback=0.7;
|
|
depth=1;
|
|
}
|