152 lines
3.7 KiB
C++
152 lines
3.7 KiB
C++
#include "audio_effect_filter.h"
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#include "servers/audio_server.h"
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template<int S>
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void AudioEffectFilterInstance::_process_filter(const AudioFrame *p_src_frames,AudioFrame *p_dst_frames,int p_frame_count) {
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for(int i=0;i<p_frame_count;i++) {
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float f = p_src_frames[i].l;
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filter_process[0][0].process_one(f);
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if (S>1)
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filter_process[0][1].process_one(f);
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if (S>2)
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filter_process[0][2].process_one(f);
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if (S>3)
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filter_process[0][3].process_one(f);
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p_dst_frames[i].l=f;
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}
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for(int i=0;i<p_frame_count;i++) {
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float f = p_src_frames[i].r;
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filter_process[1][0].process_one(f);
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if (S>1)
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filter_process[1][1].process_one(f);
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if (S>2)
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filter_process[1][2].process_one(f);
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if (S>3)
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filter_process[1][3].process_one(f);
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p_dst_frames[i].r=f;
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}
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}
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void AudioEffectFilterInstance::process(const AudioFrame *p_src_frames,AudioFrame *p_dst_frames,int p_frame_count) {
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filter.set_cutoff(base->cutoff);
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filter.set_gain(base->gain);
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filter.set_resonance(base->resonance);
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filter.set_mode(base->mode);
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int stages = int(base->db)+1;
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filter.set_stages(stages);
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filter.set_sampling_rate(AudioServer::get_singleton()->get_mix_rate());
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for(int i=0;i<2;i++) {
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for(int j=0;j<4;j++) {
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filter_process[i][j].update_coeffs();
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}
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}
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if (stages==1) {
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_process_filter<1>(p_src_frames,p_dst_frames,p_frame_count);
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} else if (stages==2) {
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_process_filter<2>(p_src_frames,p_dst_frames,p_frame_count);
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} else if (stages==3) {
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_process_filter<3>(p_src_frames,p_dst_frames,p_frame_count);
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} else if (stages==4) {
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_process_filter<4>(p_src_frames,p_dst_frames,p_frame_count);
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}
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}
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AudioEffectFilterInstance::AudioEffectFilterInstance() {
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for(int i=0;i<2;i++) {
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for(int j=0;j<4;j++) {
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filter_process[i][j].set_filter(&filter);
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}
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}
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}
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Ref<AudioEffectInstance> AudioEffectFilter::instance() {
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Ref<AudioEffectFilterInstance> ins;
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ins.instance();
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ins->base=Ref<AudioEffectFilter>(this);
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return ins;
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}
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void AudioEffectFilter::set_cutoff(float p_freq) {
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cutoff=p_freq;
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}
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float AudioEffectFilter::get_cutoff() const{
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return cutoff;
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}
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void AudioEffectFilter::set_resonance(float p_amount){
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resonance=p_amount;
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}
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float AudioEffectFilter::get_resonance() const{
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return resonance;
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}
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void AudioEffectFilter::set_gain(float p_amount){
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gain=p_amount;
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}
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float AudioEffectFilter::get_gain() const {
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return gain;
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}
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void AudioEffectFilter::set_db(FilterDB p_db) {
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db=p_db;
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}
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AudioEffectFilter::FilterDB AudioEffectFilter::get_db() const {
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return db;
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}
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void AudioEffectFilter::_bind_methods() {
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ClassDB::bind_method(_MD("set_cutoff","freq"),&AudioEffectFilter::set_cutoff);
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ClassDB::bind_method(_MD("get_cutoff"),&AudioEffectFilter::get_cutoff);
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ClassDB::bind_method(_MD("set_resonance","amount"),&AudioEffectFilter::set_resonance);
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ClassDB::bind_method(_MD("get_resonance"),&AudioEffectFilter::get_resonance);
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ClassDB::bind_method(_MD("set_gain","amount"),&AudioEffectFilter::set_gain);
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ClassDB::bind_method(_MD("get_gain"),&AudioEffectFilter::get_gain);
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ClassDB::bind_method(_MD("set_db","amount"),&AudioEffectFilter::set_db);
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ClassDB::bind_method(_MD("get_db"),&AudioEffectFilter::get_db);
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ADD_PROPERTY(PropertyInfo(Variant::REAL,"cutoff_hz",PROPERTY_HINT_RANGE,"1,40000,0.1"),_SCS("set_cutoff"),_SCS("get_cutoff"));
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ADD_PROPERTY(PropertyInfo(Variant::REAL,"resonance",PROPERTY_HINT_RANGE,"0,1,0.01"),_SCS("set_resonance"),_SCS("get_resonance"));
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ADD_PROPERTY(PropertyInfo(Variant::REAL,"gain",PROPERTY_HINT_RANGE,"0,4,0.01"),_SCS("set_gain"),_SCS("get_gain"));
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ADD_PROPERTY(PropertyInfo(Variant::INT,"dB",PROPERTY_HINT_ENUM,"6db,12db,18db,24db"),_SCS("set_db"),_SCS("get_db"));
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}
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AudioEffectFilter::AudioEffectFilter(AudioFilterSW::Mode p_mode)
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{
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mode=p_mode;
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cutoff=2000;
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resonance=0.5;
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gain=1.0;
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db=FILTER_6DB;
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}
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