Delay sound effect
This commit is contained in:
Juan Linietsky
parent
eda739f414
commit
2d8e765aab
4 changed files with 467 additions and 28 deletions
325
servers/audio/effects/audio_effect_delay.cpp
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325
servers/audio/effects/audio_effect_delay.cpp
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#include "audio_effect_delay.h"
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#include "servers/audio_server.h"
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void AudioEffectDelayInstance::process(const AudioFrame *p_src_frames,AudioFrame *p_dst_frames,int p_frame_count) {
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int todo = p_frame_count;
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while(todo) {
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int to_mix = MIN(todo,256); //can't mix too much
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_process_chunk(p_src_frames,p_dst_frames,to_mix);
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p_src_frames+=to_mix;
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p_dst_frames+=to_mix;
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todo-=to_mix;
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}
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}
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void AudioEffectDelayInstance::_process_chunk(const AudioFrame *p_src_frames,AudioFrame *p_dst_frames,int p_frame_count) {
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float main_level_f=base->dry;
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float mix_rate = AudioServer::get_singleton()->get_mix_rate();
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float tap_1_level_f=base->tap_1_active?Math::db2linear(base->tap_1_level):0.0;
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int tap_1_delay_frames=int((base->tap_1_delay_ms/1000.0)*mix_rate);;
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float tap_2_level_f=base->tap_2_active?Math::db2linear(base->tap_2_level):0.0;
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int tap_2_delay_frames=int((base->tap_2_delay_ms/1000.0)*mix_rate);;
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float feedback_level_f=base->feedback_active?Math::db2linear(base->feedback_level):0.0;
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unsigned int feedback_delay_frames=int((base->feedback_delay_ms/1000.0)*mix_rate);;
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AudioFrame tap1_vol=AudioFrame(tap_1_level_f,tap_1_level_f);
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tap1_vol.l*=CLAMP( 1.0 - base->tap_1_pan, 0, 1);
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tap1_vol.r*=CLAMP( 1.0 + base->tap_1_pan, 0, 1);
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AudioFrame tap2_vol=AudioFrame(tap_2_level_f,tap_2_level_f);
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tap2_vol.l*=CLAMP( 1.0 - base->tap_2_pan, 0, 1);
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tap2_vol.r*=CLAMP( 1.0 + base->tap_2_pan, 0, 1);
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// feedback lowpass here
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float lpf_c=expf(-2.0*M_PI*base->feedback_lowpass/mix_rate); // 0 .. 10khz
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float lpf_ic=1.0-lpf_c;
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const AudioFrame *src=p_src_frames;
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AudioFrame *dst=p_dst_frames;
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AudioFrame *rb_buf=ring_buffer.ptr();
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AudioFrame *fb_buf=feedback_buffer.ptr();
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for (int i=0;i<p_frame_count;i++) {
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rb_buf[ring_buffer_pos&ring_buffer_mask]=src[i];
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AudioFrame main_val=src[i]*main_level_f;
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AudioFrame tap_1_val=rb_buf[(ring_buffer_pos-tap_1_delay_frames)&ring_buffer_mask]*tap1_vol;
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AudioFrame tap_2_val=rb_buf[(ring_buffer_pos-tap_2_delay_frames)&ring_buffer_mask]*tap2_vol;
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AudioFrame out=main_val+tap_1_val+tap_2_val;
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out+=fb_buf[ feedback_buffer_pos ];
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//apply lowpass and feedback gain
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AudioFrame fb_in=out*feedback_level_f*lpf_ic+h*lpf_c;
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fb_in.undenormalise(); //avoid denormals
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h=fb_in;
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fb_buf[ feedback_buffer_pos ]=fb_in;
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dst[i]=out;
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ring_buffer_pos++;
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if ( (++feedback_buffer_pos) >= feedback_delay_frames )
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feedback_buffer_pos=0;
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}
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}
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Ref<AudioEffectInstance> AudioEffectDelay::instance() {
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Ref<AudioEffectDelayInstance> ins;
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ins.instance();
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ins->base=Ref<AudioEffectDelay>(this);
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float ring_buffer_max_size=MAX_DELAY_MS+100; //add 100ms of extra room, just in case
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ring_buffer_max_size/=1000.0;//convert to seconds
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ring_buffer_max_size*=AudioServer::get_singleton()->get_mix_rate();
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int ringbuff_size=ring_buffer_max_size;
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int bits=0;
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while(ringbuff_size>0) {
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bits++;
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ringbuff_size/=2;
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}
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ringbuff_size=1<<bits;
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ins->ring_buffer_mask=ringbuff_size-1;
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ins->ring_buffer_pos=0;
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ins->ring_buffer.resize( ringbuff_size );
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ins->feedback_buffer.resize( ringbuff_size );
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ins->feedback_buffer_pos=0;
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ins->h=AudioFrame(0,0);
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return ins;
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}
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void AudioEffectDelay::set_dry(float p_dry) {
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dry=p_dry;
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}
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float AudioEffectDelay::get_dry(){
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return dry;
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}
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void AudioEffectDelay::set_tap1_active(bool p_active){
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tap_1_active=p_active;
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}
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bool AudioEffectDelay::is_tap1_active() const{
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return tap_1_active;
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}
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void AudioEffectDelay::set_tap1_delay_ms(float p_delay_ms){
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tap_1_delay_ms=p_delay_ms;
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}
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float AudioEffectDelay::get_tap1_delay_ms() const{
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return tap_1_delay_ms;
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}
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void AudioEffectDelay::set_tap1_level_db(float p_level_db){
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tap_1_level=p_level_db;
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}
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float AudioEffectDelay::get_tap1_level_db() const{
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return tap_1_level;
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}
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void AudioEffectDelay::set_tap1_pan(float p_pan){
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tap_1_pan=p_pan;
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}
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float AudioEffectDelay::get_tap1_pan() const{
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return tap_1_pan;
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}
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void AudioEffectDelay::set_tap2_active(bool p_active){
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tap_2_active=p_active;
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}
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bool AudioEffectDelay::is_tap2_active() const{
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return tap_2_active;
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}
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void AudioEffectDelay::set_tap2_delay_ms(float p_delay_ms){
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tap_2_delay_ms=p_delay_ms;
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}
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float AudioEffectDelay::get_tap2_delay_ms() const{
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return tap_2_delay_ms;
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}
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void AudioEffectDelay::set_tap2_level_db(float p_level_db){
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tap_2_level=p_level_db;
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}
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float AudioEffectDelay::get_tap2_level_db() const{
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return tap_2_level;
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}
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void AudioEffectDelay::set_tap2_pan(float p_pan){
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tap_2_pan=p_pan;
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}
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float AudioEffectDelay::get_tap2_pan() const{
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return tap_2_pan;
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}
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void AudioEffectDelay::set_feedback_active(bool p_active){
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feedback_active=p_active;
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}
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bool AudioEffectDelay::is_feedback_active() const{
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return feedback_active;
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}
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void AudioEffectDelay::set_feedback_delay_ms(float p_delay_ms){
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feedback_delay_ms=p_delay_ms;
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}
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float AudioEffectDelay::get_feedback_delay_ms() const{
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return feedback_delay_ms;
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}
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void AudioEffectDelay::set_feedback_level_db(float p_level_db){
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feedback_level=p_level_db;
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}
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float AudioEffectDelay::get_feedback_level_db() const{
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return feedback_level;
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}
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void AudioEffectDelay::set_feedback_lowpass(float p_lowpass){
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feedback_lowpass=p_lowpass;
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}
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float AudioEffectDelay::get_feedback_lowpass() const{
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return feedback_lowpass;
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}
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void AudioEffectDelay::_bind_methods() {
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ClassDB::bind_method(_MD("set_dry","amount"),&AudioEffectDelay::set_dry);
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ClassDB::bind_method(_MD("get_dry"),&AudioEffectDelay::get_dry);
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ClassDB::bind_method(_MD("set_tap1_active","amount"),&AudioEffectDelay::set_tap1_active);
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ClassDB::bind_method(_MD("is_tap1_active"),&AudioEffectDelay::is_tap1_active);
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ClassDB::bind_method(_MD("set_tap1_delay_ms","amount"),&AudioEffectDelay::set_tap1_delay_ms);
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ClassDB::bind_method(_MD("get_tap1_delay_ms"),&AudioEffectDelay::get_tap1_delay_ms);
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ClassDB::bind_method(_MD("set_tap1_level_db","amount"),&AudioEffectDelay::set_tap1_level_db);
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ClassDB::bind_method(_MD("get_tap1_level_db"),&AudioEffectDelay::get_tap1_level_db);
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ClassDB::bind_method(_MD("set_tap1_pan","amount"),&AudioEffectDelay::set_tap1_pan);
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ClassDB::bind_method(_MD("get_tap1_pan"),&AudioEffectDelay::get_tap1_pan);
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ClassDB::bind_method(_MD("set_tap2_active","amount"),&AudioEffectDelay::set_tap2_active);
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ClassDB::bind_method(_MD("is_tap2_active"),&AudioEffectDelay::is_tap2_active);
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ClassDB::bind_method(_MD("set_tap2_delay_ms","amount"),&AudioEffectDelay::set_tap2_delay_ms);
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ClassDB::bind_method(_MD("get_tap2_delay_ms"),&AudioEffectDelay::get_tap2_delay_ms);
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ClassDB::bind_method(_MD("set_tap2_level_db","amount"),&AudioEffectDelay::set_tap2_level_db);
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ClassDB::bind_method(_MD("get_tap2_level_db"),&AudioEffectDelay::get_tap2_level_db);
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ClassDB::bind_method(_MD("set_tap2_pan","amount"),&AudioEffectDelay::set_tap2_pan);
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ClassDB::bind_method(_MD("get_tap2_pan"),&AudioEffectDelay::get_tap2_pan);
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ClassDB::bind_method(_MD("set_feedback_active","amount"),&AudioEffectDelay::set_feedback_active);
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ClassDB::bind_method(_MD("is_feedback_active"),&AudioEffectDelay::is_feedback_active);
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ClassDB::bind_method(_MD("set_feedback_delay_ms","amount"),&AudioEffectDelay::set_feedback_delay_ms);
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ClassDB::bind_method(_MD("get_feedback_delay_ms"),&AudioEffectDelay::get_feedback_delay_ms);
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ClassDB::bind_method(_MD("set_feedback_level_db","amount"),&AudioEffectDelay::set_feedback_level_db);
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ClassDB::bind_method(_MD("get_feedback_level_db"),&AudioEffectDelay::get_feedback_level_db);
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ClassDB::bind_method(_MD("set_feedback_lowpass","amount"),&AudioEffectDelay::set_feedback_lowpass);
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ClassDB::bind_method(_MD("get_feedback_lowpass"),&AudioEffectDelay::get_feedback_lowpass);
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ADD_PROPERTY(PropertyInfo(Variant::REAL,"dry",PROPERTY_HINT_RANGE,"0,1,0.01"),_SCS("set_dry"),_SCS("get_dry"));
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ADD_PROPERTY(PropertyInfo(Variant::BOOL,"tap1/active"),_SCS("set_tap1_active"),_SCS("is_tap1_active"));
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ADD_PROPERTY(PropertyInfo(Variant::REAL,"tap1/delay_ms",PROPERTY_HINT_RANGE,"0,1500,1"),_SCS("set_tap1_delay_ms"),_SCS("get_tap1_delay_ms"));
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ADD_PROPERTY(PropertyInfo(Variant::REAL,"tap1/level_db",PROPERTY_HINT_RANGE,"-60,0,0.01"),_SCS("set_tap1_level_db"),_SCS("get_tap1_level_db"));
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ADD_PROPERTY(PropertyInfo(Variant::REAL,"tap1/pan",PROPERTY_HINT_RANGE,"-1,1,0.01"),_SCS("set_tap1_pan"),_SCS("get_tap1_pan"));
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ADD_PROPERTY(PropertyInfo(Variant::BOOL,"tap2/active"),_SCS("set_tap2_active"),_SCS("is_tap2_active"));
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ADD_PROPERTY(PropertyInfo(Variant::REAL,"tap2/delay_ms",PROPERTY_HINT_RANGE,"0,1500,1"),_SCS("set_tap2_delay_ms"),_SCS("get_tap2_delay_ms"));
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ADD_PROPERTY(PropertyInfo(Variant::REAL,"tap2/level_db",PROPERTY_HINT_RANGE,"-60,0,0.01"),_SCS("set_tap2_level_db"),_SCS("get_tap2_level_db"));
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ADD_PROPERTY(PropertyInfo(Variant::REAL,"tap2/pan",PROPERTY_HINT_RANGE,"-1,1,0.01"),_SCS("set_tap2_pan"),_SCS("get_tap2_pan"));
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ADD_PROPERTY(PropertyInfo(Variant::BOOL,"feedback/active"),_SCS("set_feedback_active"),_SCS("is_feedback_active"));
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ADD_PROPERTY(PropertyInfo(Variant::REAL,"feedback/delay_ms",PROPERTY_HINT_RANGE,"0,1500,1"),_SCS("set_feedback_delay_ms"),_SCS("get_feedback_delay_ms"));
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ADD_PROPERTY(PropertyInfo(Variant::REAL,"feedback/level_db",PROPERTY_HINT_RANGE,"-60,0,0.01"),_SCS("set_feedback_level_db"),_SCS("get_feedback_level_db"));
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ADD_PROPERTY(PropertyInfo(Variant::REAL,"feedback/lowpass",PROPERTY_HINT_RANGE,"1,16000,1"),_SCS("set_feedback_lowpass"),_SCS("get_feedback_lowpass"));
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}
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AudioEffectDelay::AudioEffectDelay()
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{
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tap_1_active=true;
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tap_1_delay_ms=250;
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tap_1_level=-6;
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tap_1_pan=0.2;
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tap_2_active=true;
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tap_2_delay_ms=500;
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tap_2_level=-12;
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tap_2_pan=-0.4;
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feedback_active=false;
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feedback_delay_ms=340;
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feedback_level=-6;
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feedback_lowpass=16000;
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dry=1.0;
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}
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112
servers/audio/effects/audio_effect_delay.h
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112
servers/audio/effects/audio_effect_delay.h
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#ifndef AUDIOEFFECTECHO_H
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#define AUDIOEFFECTECHO_H
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#include "servers/audio/audio_effect.h"
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class AudioEffectDelay;
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class AudioEffectDelayInstance : public AudioEffectInstance {
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GDCLASS(AudioEffectDelayInstance,AudioEffectInstance)
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friend class AudioEffectDelay;
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Ref<AudioEffectDelay> base;
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Vector<AudioFrame> ring_buffer;
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unsigned int ring_buffer_pos;
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unsigned int ring_buffer_mask;
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/* feedback buffer */
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Vector<AudioFrame> feedback_buffer;
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unsigned int feedback_buffer_pos;
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AudioFrame h;
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void _process_chunk(const AudioFrame *p_src_frames,AudioFrame *p_dst_frames,int p_frame_count);
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public:
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virtual void process(const AudioFrame *p_src_frames,AudioFrame *p_dst_frames,int p_frame_count);
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};
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class AudioEffectDelay : public AudioEffect {
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GDCLASS(AudioEffectDelay,AudioEffect)
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friend class AudioEffectDelayInstance;
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enum {
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MAX_DELAY_MS=3000,
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MAX_TAPS=2
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};
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float dry;
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bool tap_1_active;
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float tap_1_delay_ms;
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float tap_1_level;
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float tap_1_pan;
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bool tap_2_active;
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float tap_2_delay_ms;
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float tap_2_level;
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float tap_2_pan;
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bool feedback_active;
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float feedback_delay_ms;
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float feedback_level;
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float feedback_lowpass;
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protected:
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static void _bind_methods();
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public:
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void set_dry(float p_dry);
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float get_dry();
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void set_tap1_active(bool p_active);
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bool is_tap1_active() const;
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void set_tap1_delay_ms(float p_delay_ms);
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float get_tap1_delay_ms() const;
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void set_tap1_level_db(float p_level_db);
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float get_tap1_level_db() const;
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void set_tap1_pan(float p_pan);
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float get_tap1_pan() const;
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void set_tap2_active(bool p_active);
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bool is_tap2_active() const;
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void set_tap2_delay_ms(float p_delay_ms);
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float get_tap2_delay_ms() const;
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void set_tap2_level_db(float p_level_db);
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float get_tap2_level_db() const;
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void set_tap2_pan(float p_pan);
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float get_tap2_pan() const;
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void set_feedback_active(bool p_active);
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bool is_feedback_active() const;
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void set_feedback_delay_ms(float p_delay_ms);
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float get_feedback_delay_ms() const;
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void set_feedback_level_db(float p_level_db);
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float get_feedback_level_db() const;
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void set_feedback_lowpass(float p_lowpass);
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float get_feedback_lowpass() const;
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Ref<AudioEffectInstance> instance();
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AudioEffectDelay();
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};
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#endif // AUDIOEFFECTECHO_H
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@ -69,55 +69,55 @@ public:
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VARIANT_ENUM_CAST(AudioEffectFilter::FilterDB)
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class AudioEffectLowPass : public AudioEffectFilter {
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GDCLASS(AudioEffectLowPass,AudioEffectFilter)
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class AudioEffectLowPassFilter : public AudioEffectFilter {
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GDCLASS(AudioEffectLowPassFilter,AudioEffectFilter)
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public:
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AudioEffectLowPass() : AudioEffectFilter(AudioFilterSW::LOWPASS) {}
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AudioEffectLowPassFilter() : AudioEffectFilter(AudioFilterSW::LOWPASS) {}
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};
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class AudioEffectHighPass : public AudioEffectFilter {
|
||||
GDCLASS(AudioEffectHighPass,AudioEffectFilter)
|
||||
class AudioEffectHighPassFilter : public AudioEffectFilter {
|
||||
GDCLASS(AudioEffectHighPassFilter,AudioEffectFilter)
|
||||
public:
|
||||
|
||||
AudioEffectHighPass() : AudioEffectFilter(AudioFilterSW::HIGHPASS) {}
|
||||
AudioEffectHighPassFilter() : AudioEffectFilter(AudioFilterSW::HIGHPASS) {}
|
||||
};
|
||||
|
||||
class AudioEffectBandPass : public AudioEffectFilter {
|
||||
GDCLASS(AudioEffectBandPass,AudioEffectFilter)
|
||||
class AudioEffectBandPassFilter : public AudioEffectFilter {
|
||||
GDCLASS(AudioEffectBandPassFilter,AudioEffectFilter)
|
||||
public:
|
||||
|
||||
AudioEffectBandPass() : AudioEffectFilter(AudioFilterSW::BANDPASS) {}
|
||||
AudioEffectBandPassFilter() : AudioEffectFilter(AudioFilterSW::BANDPASS) {}
|
||||
};
|
||||
|
||||
class AudioEffectNotchPass : public AudioEffectFilter {
|
||||
GDCLASS(AudioEffectNotchPass,AudioEffectFilter)
|
||||
class AudioEffectNotchFilter : public AudioEffectFilter {
|
||||
GDCLASS(AudioEffectNotchFilter,AudioEffectFilter)
|
||||
public:
|
||||
|
||||
AudioEffectNotchPass() : AudioEffectFilter(AudioFilterSW::NOTCH) {}
|
||||
AudioEffectNotchFilter() : AudioEffectFilter(AudioFilterSW::NOTCH) {}
|
||||
};
|
||||
|
||||
class AudioEffectBandLimit : public AudioEffectFilter {
|
||||
GDCLASS(AudioEffectBandLimit,AudioEffectFilter)
|
||||
class AudioEffectBandLimitFilter : public AudioEffectFilter {
|
||||
GDCLASS(AudioEffectBandLimitFilter,AudioEffectFilter)
|
||||
public:
|
||||
|
||||
AudioEffectBandLimit() : AudioEffectFilter(AudioFilterSW::BANDLIMIT) {}
|
||||
AudioEffectBandLimitFilter() : AudioEffectFilter(AudioFilterSW::BANDLIMIT) {}
|
||||
};
|
||||
|
||||
|
||||
class AudioEffectLowShelf : public AudioEffectFilter {
|
||||
GDCLASS(AudioEffectLowShelf,AudioEffectFilter)
|
||||
class AudioEffectLowShelfFilter : public AudioEffectFilter {
|
||||
GDCLASS(AudioEffectLowShelfFilter,AudioEffectFilter)
|
||||
public:
|
||||
|
||||
AudioEffectLowShelf() : AudioEffectFilter(AudioFilterSW::LOWSHELF) {}
|
||||
AudioEffectLowShelfFilter() : AudioEffectFilter(AudioFilterSW::LOWSHELF) {}
|
||||
};
|
||||
|
||||
|
||||
class AudioEffectHighShelf : public AudioEffectFilter {
|
||||
GDCLASS(AudioEffectHighShelf,AudioEffectFilter)
|
||||
class AudioEffectHighShelfFilter : public AudioEffectFilter {
|
||||
GDCLASS(AudioEffectHighShelfFilter,AudioEffectFilter)
|
||||
public:
|
||||
|
||||
AudioEffectHighShelf() : AudioEffectFilter(AudioFilterSW::HIGHSHELF) {}
|
||||
AudioEffectHighShelfFilter() : AudioEffectFilter(AudioFilterSW::HIGHSHELF) {}
|
||||
};
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -45,6 +45,7 @@
|
|||
#include "audio/effects/audio_effect_stereo_enhance.h"
|
||||
#include "audio/effects/audio_effect_panner.h"
|
||||
#include "audio/effects/audio_effect_chorus.h"
|
||||
#include "audio/effects/audio_effect_delay.h"
|
||||
|
||||
static void _debugger_get_resource_usage(List<ScriptDebuggerRemote::ResourceUsage>* r_usage) {
|
||||
|
||||
|
|
@ -87,13 +88,13 @@ void register_server_types() {
|
|||
|
||||
ClassDB::register_class<AudioEffectReverb>();
|
||||
|
||||
ClassDB::register_class<AudioEffectLowPass>();
|
||||
ClassDB::register_class<AudioEffectHighPass>();
|
||||
ClassDB::register_class<AudioEffectBandPass>();
|
||||
ClassDB::register_class<AudioEffectNotchPass>();
|
||||
ClassDB::register_class<AudioEffectBandLimit>();
|
||||
ClassDB::register_class<AudioEffectLowShelf>();
|
||||
ClassDB::register_class<AudioEffectHighShelf>();
|
||||
ClassDB::register_class<AudioEffectLowPassFilter>();
|
||||
ClassDB::register_class<AudioEffectHighPassFilter>();
|
||||
ClassDB::register_class<AudioEffectBandPassFilter>();
|
||||
ClassDB::register_class<AudioEffectNotchFilter>();
|
||||
ClassDB::register_class<AudioEffectBandLimitFilter>();
|
||||
ClassDB::register_class<AudioEffectLowShelfFilter>();
|
||||
ClassDB::register_class<AudioEffectHighShelfFilter>();
|
||||
|
||||
ClassDB::register_class<AudioEffectEQ6>();
|
||||
ClassDB::register_class<AudioEffectEQ10>();
|
||||
|
|
@ -105,6 +106,7 @@ void register_server_types() {
|
|||
|
||||
ClassDB::register_class<AudioEffectPanner>();
|
||||
ClassDB::register_class<AudioEffectChorus>();
|
||||
ClassDB::register_class<AudioEffectDelay>();
|
||||
}
|
||||
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue