806 lines
18 KiB
C++
806 lines
18 KiB
C++
#include "audio_server_javascript.h"
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#include "emscripten.h"
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AudioMixer *AudioServerJavascript::get_mixer() {
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return NULL;
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}
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void AudioServerJavascript::audio_mixer_chunk_callback(int p_frames){
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}
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RID AudioServerJavascript::sample_create(SampleFormat p_format, bool p_stereo, int p_length) {
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Sample *sample = memnew( Sample );
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sample->format=p_format;
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sample->stereo=p_stereo;
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sample->length=p_length;
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sample->loop_begin=0;
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sample->loop_end=p_length;
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sample->loop_format=SAMPLE_LOOP_NONE;
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sample->mix_rate=44100;
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sample->index=-1;
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return sample_owner.make_rid(sample);
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}
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void AudioServerJavascript::sample_set_description(RID p_sample, const String& p_description){
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}
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String AudioServerJavascript::sample_get_description(RID p_sample, const String& p_description) const{
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return String();
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}
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AudioServerJavascript::SampleFormat AudioServerJavascript::sample_get_format(RID p_sample) const{
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return SAMPLE_FORMAT_PCM8;
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}
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bool AudioServerJavascript::sample_is_stereo(RID p_sample) const{
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const Sample *sample = sample_owner.get(p_sample);
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ERR_FAIL_COND_V(!sample,false);
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return sample->stereo;
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}
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int AudioServerJavascript::sample_get_length(RID p_sample) const{
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const Sample *sample = sample_owner.get(p_sample);
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ERR_FAIL_COND_V(!sample,0);
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return sample->length;
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}
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const void* AudioServerJavascript::sample_get_data_ptr(RID p_sample) const{
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return NULL;
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}
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void AudioServerJavascript::sample_set_data(RID p_sample, const DVector<uint8_t>& p_buffer){
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Sample *sample = sample_owner.get(p_sample);
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ERR_FAIL_COND(!sample);
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int chans = sample->stereo?2:1;
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Vector<float> buffer;
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buffer.resize(sample->length*chans);
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DVector<uint8_t>::Read r=p_buffer.read();
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if (sample->format==SAMPLE_FORMAT_PCM8) {
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const int8_t*ptr = (const int8_t*)r.ptr();
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for(int i=0;i<sample->length*chans;i++) {
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buffer[i]=ptr[i]/128.0;
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}
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} else if (sample->format==SAMPLE_FORMAT_PCM16){
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const int16_t*ptr = (const int16_t*)r.ptr();
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for(int i=0;i<sample->length*chans;i++) {
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buffer[i]=ptr[i]/32768.0;
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}
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} else {
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ERR_EXPLAIN("Unsupported for now");
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ERR_FAIL();
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}
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sample->tmp_data=buffer;
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}
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const DVector<uint8_t> AudioServerJavascript::sample_get_data(RID p_sample) const{
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return DVector<uint8_t>();
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}
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void AudioServerJavascript::sample_set_mix_rate(RID p_sample,int p_rate){
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Sample *sample = sample_owner.get(p_sample);
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ERR_FAIL_COND(!sample);
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sample->mix_rate=p_rate;
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}
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int AudioServerJavascript::sample_get_mix_rate(RID p_sample) const{
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const Sample *sample = sample_owner.get(p_sample);
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ERR_FAIL_COND_V(!sample,0);
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return sample->mix_rate;
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}
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void AudioServerJavascript::sample_set_loop_format(RID p_sample,SampleLoopFormat p_format){
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Sample *sample = sample_owner.get(p_sample);
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ERR_FAIL_COND(!sample);
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sample->loop_format=p_format;
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}
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AudioServerJavascript::SampleLoopFormat AudioServerJavascript::sample_get_loop_format(RID p_sample) const {
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const Sample *sample = sample_owner.get(p_sample);
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ERR_FAIL_COND_V(!sample,SAMPLE_LOOP_NONE);
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return sample->loop_format;
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}
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void AudioServerJavascript::sample_set_loop_begin(RID p_sample,int p_pos){
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Sample *sample = sample_owner.get(p_sample);
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ERR_FAIL_COND(!sample);
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sample->loop_begin=p_pos;
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}
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int AudioServerJavascript::sample_get_loop_begin(RID p_sample) const{
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const Sample *sample = sample_owner.get(p_sample);
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ERR_FAIL_COND_V(!sample,0);
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return sample->loop_begin;
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}
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void AudioServerJavascript::sample_set_loop_end(RID p_sample,int p_pos){
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Sample *sample = sample_owner.get(p_sample);
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ERR_FAIL_COND(!sample);
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sample->loop_end=p_pos;
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}
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int AudioServerJavascript::sample_get_loop_end(RID p_sample) const{
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const Sample *sample = sample_owner.get(p_sample);
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ERR_FAIL_COND_V(!sample,0);
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return sample->loop_end;
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}
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/* VOICE API */
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RID AudioServerJavascript::voice_create(){
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Voice *voice = memnew( Voice );
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voice->index=voice_base;
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voice->volume=1.0;
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voice->pan=0.0;
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voice->pan_depth=.0;
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voice->pan_height=0.0;
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voice->chorus=0;
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voice->reverb_type=REVERB_SMALL;
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voice->reverb=0;
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voice->mix_rate=-1;
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voice->positional=false;
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voice->active=false;
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EM_ASM_( {
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_as_voices[$0]=null;
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_as_voice_gain[$0]=_as_audioctx.createGain();
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_as_voice_pan[$0]=_as_audioctx.createStereoPanner();
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_as_voice_gain[$0].connect(_as_voice_pan[$0]);
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_as_voice_pan[$0].connect(_as_audioctx.destination);
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},voice_base);
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voice_base++;
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return voice_owner.make_rid( voice );
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}
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void AudioServerJavascript::voice_play(RID p_voice, RID p_sample){
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Voice* voice=voice_owner.get(p_voice);
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ERR_FAIL_COND(!voice);
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Sample *sample=sample_owner.get(p_sample);
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ERR_FAIL_COND(!sample);
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// due to how webaudio works, sample cration is deferred until used
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// sorry! WebAudio absolutely sucks
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if (sample->index==-1) {
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//create sample if not created
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ERR_FAIL_COND(sample->tmp_data.size()==0);
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sample->index=sample_base;
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EM_ASM_( {
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_as_samples[$0]=_as_audioctx.createBuffer($1,$2,$3);
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},sample_base,sample->stereo?2:1,sample->length,sample->mix_rate);
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sample_base++;
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int chans = sample->stereo?2:1;
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for(int i=0;i<chans;i++) {
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EM_ASM_({
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_as_edited_buffer=_as_samples[$0].getChannelData($1);
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},sample->index,i);
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for(int j=0;j<sample->length;j++) {
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EM_ASM_({
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_as_edited_buffer[$0]=$1;
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},j,sample->tmp_data[j*chans+i]);
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}
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}
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sample->tmp_data.clear();
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}
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voice->sample_mix_rate=sample->mix_rate;
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if (voice->mix_rate==-1) {
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voice->mix_rate=voice->sample_mix_rate;
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}
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float freq_diff = Math::log(float(voice->mix_rate)/float(voice->sample_mix_rate))/Math::log(2.0);
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int detune = int(freq_diff*1200.0);
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EM_ASM_( {
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if (_as_voices[$0]!==null) {
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_as_voices[$0].stop(); //stop and byebye
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}
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_as_voices[$0]=_as_audioctx.createBufferSource();
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_as_voices[$0].connect(_as_voice_gain[$0]);
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_as_voices[$0].buffer=_as_samples[$1];
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_as_voices[$0].loopStart.value=$1;
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_as_voices[$0].loopEnd.value=$2;
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_as_voices[$0].loop.value=$3;
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_as_voices[$0].detune.value=$6;
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_as_voice_pan[$0].pan.value=$4;
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_as_voice_gain[$0].gain.value=$5;
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_as_voices[$0].start();
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_as_voices[$0].onended=function() {
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_as_voices[$0].disconnect(_as_voice_gain[$0]);
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_as_voices[$0]=null;
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}
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},voice->index,sample->index,sample->mix_rate*sample->loop_begin,sample->mix_rate*sample->loop_end,sample->loop_format!=SAMPLE_LOOP_NONE,voice->pan,voice->volume*fx_volume_scale,detune);
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voice->active=true;
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}
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void AudioServerJavascript::voice_set_volume(RID p_voice, float p_gain){
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Voice* voice=voice_owner.get(p_voice);
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ERR_FAIL_COND(!voice);
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voice->volume=p_gain;
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if (voice->active) {
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EM_ASM_( {
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_as_voice_gain[$0].gain.value=$1;
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},voice->index,voice->volume*fx_volume_scale);
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}
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}
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void AudioServerJavascript::voice_set_pan(RID p_voice, float p_pan, float p_depth,float height){
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Voice* voice=voice_owner.get(p_voice);
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ERR_FAIL_COND(!voice);
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voice->pan=p_pan;
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voice->pan_depth=p_depth;
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voice->pan_height=height;
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if (voice->active) {
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EM_ASM_( {
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_as_voice_pan[$0].pan.value=$1;
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},voice->index,voice->pan);
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}
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}
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void AudioServerJavascript::voice_set_filter(RID p_voice, FilterType p_type, float p_cutoff, float p_resonance, float p_gain){
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}
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void AudioServerJavascript::voice_set_chorus(RID p_voice, float p_chorus ){
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}
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void AudioServerJavascript::voice_set_reverb(RID p_voice, ReverbRoomType p_room_type, float p_reverb){
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}
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void AudioServerJavascript::voice_set_mix_rate(RID p_voice, int p_mix_rate){
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Voice* voice=voice_owner.get(p_voice);
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ERR_FAIL_COND(!voice);
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voice->mix_rate=p_mix_rate;
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if (voice->active) {
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float freq_diff = Math::log(float(voice->mix_rate)/float(voice->sample_mix_rate))/Math::log(2.0);
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int detune = int(freq_diff*1200.0);
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EM_ASM_( {
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_as_voices[$0].detune.value=$1;
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},voice->index,detune);
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}
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}
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void AudioServerJavascript::voice_set_positional(RID p_voice, bool p_positional){
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}
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float AudioServerJavascript::voice_get_volume(RID p_voice) const{
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Voice* voice=voice_owner.get(p_voice);
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ERR_FAIL_COND_V(!voice,0);
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return voice->volume;
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}
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float AudioServerJavascript::voice_get_pan(RID p_voice) const{
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Voice* voice=voice_owner.get(p_voice);
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ERR_FAIL_COND_V(!voice,0);
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return voice->pan;
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}
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float AudioServerJavascript::voice_get_pan_depth(RID p_voice) const{
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Voice* voice=voice_owner.get(p_voice);
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ERR_FAIL_COND_V(!voice,0);
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return voice->pan_depth;
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}
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float AudioServerJavascript::voice_get_pan_height(RID p_voice) const{
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Voice* voice=voice_owner.get(p_voice);
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ERR_FAIL_COND_V(!voice,0);
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return voice->pan_height;
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}
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AudioServerJavascript::FilterType AudioServerJavascript::voice_get_filter_type(RID p_voice) const{
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return FILTER_NONE;
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}
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float AudioServerJavascript::voice_get_filter_cutoff(RID p_voice) const{
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return 0;
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}
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float AudioServerJavascript::voice_get_filter_resonance(RID p_voice) const{
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return 0;
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}
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float AudioServerJavascript::voice_get_chorus(RID p_voice) const{
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return 0;
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}
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AudioServerJavascript::ReverbRoomType AudioServerJavascript::voice_get_reverb_type(RID p_voice) const{
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return REVERB_SMALL;
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}
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float AudioServerJavascript::voice_get_reverb(RID p_voice) const{
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return 0;
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}
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int AudioServerJavascript::voice_get_mix_rate(RID p_voice) const{
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return 44100;
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}
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bool AudioServerJavascript::voice_is_positional(RID p_voice) const{
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return false;
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}
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void AudioServerJavascript::voice_stop(RID p_voice){
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Voice* voice=voice_owner.get(p_voice);
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ERR_FAIL_COND(!voice);
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if (voice->active) {
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EM_ASM_( {
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if (_as_voices[$0]!==null) {
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_as_voices[$0].stop();
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_as_voices[$0].disconnect(_as_voice_gain[$0]);
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_as_voices[$0]=null;
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}
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},voice->index);
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voice->active=false;
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}
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}
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bool AudioServerJavascript::voice_is_active(RID p_voice) const{
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Voice* voice=voice_owner.get(p_voice);
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ERR_FAIL_COND_V(!voice,false);
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return voice->active;
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}
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/* STREAM API */
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RID AudioServerJavascript::audio_stream_create(AudioStream *p_stream) {
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Stream *s = memnew(Stream);
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s->audio_stream=p_stream;
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s->event_stream=NULL;
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s->active=false;
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s->E=NULL;
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s->volume_scale=1.0;
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p_stream->set_mix_rate(webaudio_mix_rate);
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return stream_owner.make_rid(s);
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}
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RID AudioServerJavascript::event_stream_create(EventStream *p_stream) {
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Stream *s = memnew(Stream);
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s->audio_stream=NULL;
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s->event_stream=p_stream;
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s->active=false;
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s->E=NULL;
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s->volume_scale=1.0;
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//p_stream->set_mix_rate(AudioDriverJavascript::get_singleton()->get_mix_rate());
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return stream_owner.make_rid(s);
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}
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void AudioServerJavascript::stream_set_active(RID p_stream, bool p_active) {
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Stream *s = stream_owner.get(p_stream);
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ERR_FAIL_COND(!s);
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if (s->active==p_active)
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return;
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s->active=p_active;
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if (p_active)
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s->E=active_audio_streams.push_back(s);
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else {
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active_audio_streams.erase(s->E);
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s->E=NULL;
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}
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}
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bool AudioServerJavascript::stream_is_active(RID p_stream) const {
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Stream *s = stream_owner.get(p_stream);
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ERR_FAIL_COND_V(!s,false);
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return s->active;
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}
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void AudioServerJavascript::stream_set_volume_scale(RID p_stream, float p_scale) {
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Stream *s = stream_owner.get(p_stream);
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ERR_FAIL_COND(!s);
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s->volume_scale=p_scale;
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}
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float AudioServerJavascript::stream_set_volume_scale(RID p_stream) const {
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Stream *s = stream_owner.get(p_stream);
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ERR_FAIL_COND_V(!s,0);
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return s->volume_scale;
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}
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/* Audio Physics API */
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void AudioServerJavascript::free(RID p_id){
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if (voice_owner.owns(p_id)) {
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Voice* voice=voice_owner.get(p_id);
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ERR_FAIL_COND(!voice);
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if (voice->active) {
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EM_ASM_( {
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if (_as_voices[$0]!==null) {
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_as_voices[$0].stop();
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_as_voices[$0].disconnect(_as_voice_gain[$0]);
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}
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},voice->index);
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}
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EM_ASM_( {
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delete _as_voices[$0];
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_as_voice_gain[$0].disconnect(_as_voice_pan[$0]);
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delete _as_voice_gain[$0];
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_as_voice_pan[$0].disconnect(_as_audioctx.destination);
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delete _as_voice_pan[$0];
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},voice->index);
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voice_owner.free(p_id);
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memdelete(voice);
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} else if (sample_owner.owns(p_id)) {
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Sample *sample = sample_owner.get(p_id);
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ERR_FAIL_COND(!sample);
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EM_ASM_( {
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delete _as_samples[$0];
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},sample->index);
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sample_owner.free(p_id);
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memdelete(sample);
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} else if (stream_owner.owns(p_id)) {
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Stream *s=stream_owner.get(p_id);
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if (s->active) {
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stream_set_active(p_id,false);
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}
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memdelete(s);
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stream_owner.free(p_id);
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}
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}
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extern "C" {
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void audio_server_mix_function(int p_frames) {
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//print_line("MIXI! "+itos(p_frames));
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static_cast<AudioServerJavascript*>(AudioServerJavascript::get_singleton())->mix_to_js(p_frames);
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}
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}
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void AudioServerJavascript::mix_to_js(int p_frames) {
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//process in chunks to make sure to never process more than INTERNAL_BUFFER_SIZE
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int todo=p_frames;
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int offset=0;
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while(todo) {
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int tomix=MIN(todo,INTERNAL_BUFFER_SIZE);
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driver_process_chunk(tomix);
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EM_ASM_({
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var data = HEAPF32.subarray($0/4, $0/4 + $2*2);
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for (var channel = 0; channel < _as_output_buffer.numberOfChannels; channel++) {
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var outputData = _as_output_buffer.getChannelData(channel);
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// Loop through samples
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for (var sample = 0; sample < $2; sample++) {
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// make output equal to the same as the input
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outputData[sample+$1] = data[sample*2+channel];
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}
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}
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},internal_buffer,offset,tomix);
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todo-=tomix;
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offset+=tomix;
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}
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}
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void AudioServerJavascript::init(){
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//EM_ASM(
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// console.log('server is '+audio_server);
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// );
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//int latency = GLOBAL_DEF("javascript/audio_latency",16384);
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internal_buffer_channels=2;
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internal_buffer = memnew_arr(float,INTERNAL_BUFFER_SIZE*internal_buffer_channels);
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stream_buffer = memnew_arr(int32_t,INTERNAL_BUFFER_SIZE*4); //max 4 channels
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stream_volume=0.3;
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int buffer_latency=16384;
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EM_ASM_( {
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_as_script_node = _as_audioctx.createScriptProcessor($0, 0, 2);
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_as_script_node.connect(_as_audioctx.destination);
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console.log(_as_script_node.bufferSize);
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_as_script_node.onaudioprocess = function(audioProcessingEvent) {
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// The output buffer contains the samples that will be modified and played
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_as_output_buffer = audioProcessingEvent.outputBuffer;
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audio_server_mix_function(_as_output_buffer.getChannelData(0).length);
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}
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},buffer_latency);
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}
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void AudioServerJavascript::finish(){
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}
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void AudioServerJavascript::update(){
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for(List<Stream*>::Element *E=active_audio_streams.front();E;) { //stream might be removed durnig this callback
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List<Stream*>::Element *N=E->next();
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if (E->get()->audio_stream)
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E->get()->audio_stream->update();
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E=N;
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}
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}
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/* MISC config */
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void AudioServerJavascript::lock(){
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}
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void AudioServerJavascript::unlock(){
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}
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int AudioServerJavascript::get_default_channel_count() const{
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return 1;
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}
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int AudioServerJavascript::get_default_mix_rate() const{
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return 44100;
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}
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void AudioServerJavascript::set_stream_global_volume_scale(float p_volume){
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stream_volume_scale=p_volume;
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}
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void AudioServerJavascript::set_fx_global_volume_scale(float p_volume){
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fx_volume_scale=p_volume;
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}
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void AudioServerJavascript::set_event_voice_global_volume_scale(float p_volume){
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}
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float AudioServerJavascript::get_stream_global_volume_scale() const{
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return 1;
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}
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float AudioServerJavascript::get_fx_global_volume_scale() const{
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return 1;
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}
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float AudioServerJavascript::get_event_voice_global_volume_scale() const{
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return 1;
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}
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uint32_t AudioServerJavascript::read_output_peak() const{
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return 0;
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}
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AudioServerJavascript *AudioServerJavascript::singleton=NULL;
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AudioServer *AudioServerJavascript::get_singleton() {
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return singleton;
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}
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double AudioServerJavascript::get_mix_time() const{
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return 0;
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}
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double AudioServerJavascript::get_output_delay() const {
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return 0;
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}
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void AudioServerJavascript::driver_process_chunk(int p_frames) {
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int samples=p_frames*internal_buffer_channels;
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for(int i=0;i<samples;i++) {
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internal_buffer[i]=0;
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}
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for(List<Stream*>::Element *E=active_audio_streams.front();E;E=E->next()) {
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ERR_CONTINUE(!E->get()->active); // bug?
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AudioStream *as=E->get()->audio_stream;
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if (!as)
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continue;
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int channels=as->get_channel_count();
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if (channels==0)
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continue; // does not want mix
|
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if (!as->mix(stream_buffer,p_frames))
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continue; //nothing was mixed!!
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int32_t stream_vol_scale=(stream_volume*stream_volume_scale*E->get()->volume_scale)*(1<<STREAM_SCALE_BITS);
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#define STRSCALE(m_val) ((((m_val>>STREAM_SCALE_BITS)*stream_vol_scale)>>8)/8388608.0)
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switch(channels) {
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case 1: {
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for(int i=0;i<p_frames;i++) {
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internal_buffer[(i<<1)+0]+=STRSCALE(stream_buffer[i]);
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internal_buffer[(i<<1)+1]+=STRSCALE(stream_buffer[i]);
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}
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} break;
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case 2: {
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for(int i=0;i<p_frames*2;i++) {
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internal_buffer[i]+=STRSCALE(stream_buffer[i]);
|
|
}
|
|
} break;
|
|
case 4: {
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for(int i=0;i<p_frames;i++) {
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internal_buffer[(i<<2)+0]+=STRSCALE((stream_buffer[(i<<2)+0]+stream_buffer[(i<<2)+2])>>1);
|
|
internal_buffer[(i<<2)+1]+=STRSCALE((stream_buffer[(i<<2)+1]+stream_buffer[(i<<2)+3])>>1);
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|
}
|
|
} break;
|
|
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|
|
}
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#undef STRSCALE
|
|
}
|
|
}
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/*void AudioServerSW::driver_process(int p_frames,int32_t *p_buffer) {
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|
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|
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_output_delay=p_frames/double(AudioDriverSW::get_singleton()->get_mix_rate());
|
|
//process in chunks to make sure to never process more than INTERNAL_BUFFER_SIZE
|
|
int todo=p_frames;
|
|
while(todo) {
|
|
|
|
int tomix=MIN(todo,INTERNAL_BUFFER_SIZE);
|
|
driver_process_chunk(tomix,p_buffer);
|
|
p_buffer+=tomix;
|
|
todo-=tomix;
|
|
}
|
|
|
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|
|
}*/
|
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|
|
AudioServerJavascript::AudioServerJavascript() {
|
|
|
|
singleton=this;
|
|
sample_base=1;
|
|
voice_base=1;
|
|
EM_ASM(
|
|
_as_samples={};
|
|
_as_voices={};
|
|
_as_voice_pan={};
|
|
_as_voice_gain={};
|
|
|
|
_as_audioctx = new (window.AudioContext || window.webkitAudioContext)();
|
|
|
|
audio_server_mix_function = Module.cwrap('audio_server_mix_function', 'void', ['number']);
|
|
);
|
|
|
|
webaudio_mix_rate = EM_ASM_INT_V(
|
|
return _as_audioctx.sampleRate;
|
|
);
|
|
print_line("WEBAUDIO MIX RATE: "+itos(webaudio_mix_rate));
|
|
event_voice_scale=1.0;
|
|
fx_volume_scale=1.0;
|
|
stream_volume_scale=1.0;
|
|
|
|
}
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