163 lines
5.5 KiB
C++
163 lines
5.5 KiB
C++
/*************************************************************************/
|
|
/* audio_effect_stereo_enhance.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* http://www.godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
#include "audio_effect_stereo_enhance.h"
|
|
#include "servers/audio_server.h"
|
|
void AudioEffectStereoEnhanceInstance::process(const AudioFrame *p_src_frames,AudioFrame *p_dst_frames,int p_frame_count) {
|
|
|
|
|
|
float intensity=base->pan_pullout;
|
|
bool surround_mode=base->surround>0;
|
|
float surround_amount=base->surround;
|
|
unsigned int delay_frames=(base->time_pullout/1000.0)*AudioServer::get_singleton()->get_mix_rate();
|
|
|
|
for (int i=0;i<p_frame_count;i++) {
|
|
|
|
float l=p_src_frames[i].l;
|
|
float r=p_src_frames[i].r;
|
|
|
|
float center=(l+r)/2.0f;
|
|
|
|
l=( center+(l-center)*intensity );
|
|
r=( center+(r-center)*intensity );
|
|
|
|
if (surround_mode) {
|
|
|
|
float val=(l+r)/2.0;
|
|
|
|
delay_ringbuff[ringbuff_pos&ringbuff_mask]=val;
|
|
|
|
float out=delay_ringbuff[(ringbuff_pos-delay_frames)&ringbuff_mask]*surround_amount;
|
|
|
|
l+=out;
|
|
r+=-out;
|
|
} else {
|
|
|
|
float val=r;
|
|
|
|
delay_ringbuff[ringbuff_pos&ringbuff_mask]=val;
|
|
|
|
//r is delayed
|
|
r=delay_ringbuff[(ringbuff_pos-delay_frames)&ringbuff_mask];;
|
|
|
|
|
|
}
|
|
|
|
p_dst_frames[i].l=l;
|
|
p_dst_frames[i].r=r;
|
|
ringbuff_pos++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
AudioEffectStereoEnhanceInstance::~AudioEffectStereoEnhanceInstance() {
|
|
|
|
memdelete_arr(delay_ringbuff);
|
|
}
|
|
|
|
Ref<AudioEffectInstance> AudioEffectStereoEnhance::instance() {
|
|
Ref<AudioEffectStereoEnhanceInstance> ins;
|
|
ins.instance();
|
|
|
|
ins->base=Ref<AudioEffectStereoEnhance>(this);
|
|
|
|
|
|
float ring_buffer_max_size=AudioEffectStereoEnhanceInstance::MAX_DELAY_MS+2;
|
|
ring_buffer_max_size/=1000.0;//convert to seconds
|
|
ring_buffer_max_size*=AudioServer::get_singleton()->get_mix_rate();
|
|
|
|
int ringbuff_size=(int)ring_buffer_max_size;
|
|
|
|
int bits=0;
|
|
|
|
while(ringbuff_size>0) {
|
|
bits++;
|
|
ringbuff_size/=2;
|
|
}
|
|
|
|
ringbuff_size=1<<bits;
|
|
ins->ringbuff_mask=ringbuff_size-1;
|
|
ins->ringbuff_pos=0;
|
|
|
|
ins->delay_ringbuff = memnew_arr(float,ringbuff_size );
|
|
|
|
return ins;
|
|
}
|
|
|
|
void AudioEffectStereoEnhance::set_pan_pullout(float p_amount) {
|
|
|
|
pan_pullout=p_amount;
|
|
}
|
|
|
|
float AudioEffectStereoEnhance::get_pan_pullout() const {
|
|
|
|
return pan_pullout;
|
|
}
|
|
|
|
void AudioEffectStereoEnhance::set_time_pullout(float p_amount) {
|
|
|
|
time_pullout=p_amount;
|
|
}
|
|
float AudioEffectStereoEnhance::get_time_pullout() const {
|
|
|
|
return time_pullout;
|
|
}
|
|
|
|
void AudioEffectStereoEnhance::set_surround(float p_amount) {
|
|
|
|
surround=p_amount;
|
|
}
|
|
float AudioEffectStereoEnhance::get_surround() const {
|
|
|
|
return surround;
|
|
}
|
|
|
|
void AudioEffectStereoEnhance::_bind_methods() {
|
|
|
|
ClassDB::bind_method(D_METHOD("set_pan_pullout","amount"),&AudioEffectStereoEnhance::set_pan_pullout);
|
|
ClassDB::bind_method(D_METHOD("get_pan_pullout"),&AudioEffectStereoEnhance::get_pan_pullout);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_time_pullout","amount"),&AudioEffectStereoEnhance::set_time_pullout);
|
|
ClassDB::bind_method(D_METHOD("get_time_pullout"),&AudioEffectStereoEnhance::get_time_pullout);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_surround","amount"),&AudioEffectStereoEnhance::set_surround);
|
|
ClassDB::bind_method(D_METHOD("get_surround"),&AudioEffectStereoEnhance::get_surround);
|
|
|
|
ADD_PROPERTY(PropertyInfo(Variant::REAL,"pan_pullout",PROPERTY_HINT_RANGE,"0,4,0.01"),"set_pan_pullout","get_pan_pullout");
|
|
ADD_PROPERTY(PropertyInfo(Variant::REAL,"time_pullout_ms",PROPERTY_HINT_RANGE,"0,50,0.01"),"set_time_pullout","get_time_pullout");
|
|
ADD_PROPERTY(PropertyInfo(Variant::REAL,"surround",PROPERTY_HINT_RANGE,"0,1,0.01"),"set_surround","get_surround");
|
|
}
|
|
|
|
AudioEffectStereoEnhance::AudioEffectStereoEnhance()
|
|
{
|
|
pan_pullout=1;
|
|
time_pullout=0;
|
|
surround=0;
|
|
}
|