furnace/src/audio/jack.cpp

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2022-02-15 03:12:20 +00:00
/**
* Furnace Tracker - multi-system chiptune tracker
* Copyright (C) 2021-2022 tildearrow and contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <string.h>
#include "jack.h"
int taJACKonSampleRate(jack_nframes_t rate, void* inst) {
TAAudioJACK* in=(TAAudioJACK*)inst;
in->onSampleRate(rate);
return 0;
}
int taJACKonBufferSize(jack_nframes_t bufsize, void* inst) {
TAAudioJACK* in=(TAAudioJACK*)inst;
in->onBufferSize(bufsize);
return 0;
}
int taJACKProcess(jack_nframes_t nframes, void* inst) {
TAAudioJACK* in=(TAAudioJACK*)inst;
in->onProcess(nframes);
return 0;
}
void TAAudioJACK::onSampleRate(jack_nframes_t rate) {
if (sampleRateChanged!=NULL) {
sampleRateChanged(SampleRateChangeEvent(rate));
}
}
void TAAudioJACK::onBufferSize(jack_nframes_t bufsize) {
if (bufferSizeChanged!=NULL) {
bufferSizeChanged(BufferSizeChangeEvent(bufsize));
}
}
void TAAudioJACK::onProcess(jack_nframes_t nframes) {
if (audioProcCallback!=NULL) {
if (midiIn!=NULL) midiIn->gather();
audioProcCallback(audioProcCallbackUser,inBufs,outBufs,desc.inChans,desc.outChans,desc.bufsize);
}
for (int i=0; i<desc.inChans; i++) {
iInBufs[i]=(float*)jack_port_get_buffer(ai[i],nframes);
memcpy(iInBufs[i],inBufs[i],desc.bufsize*sizeof(float));
}
for (int i=0; i<desc.outChans; i++) {
iOutBufs[i]=(float*)jack_port_get_buffer(ao[i],nframes);
memcpy(iOutBufs[i],outBufs[i],desc.bufsize*sizeof(float));
}
}
void* TAAudioJACK::getContext() {
return (void*)ac;
}
bool TAAudioJACK::quit() {
if (!initialized) return false;
if (running) {
running=false;
if (jack_deactivate(ac)) return false;
}
for (int i=0; i<desc.inChans; i++) {
jack_port_unregister(ac,ai[i]);
ai[i]=NULL;
delete[] inBufs[i];
}
for (int i=0; i<desc.outChans; i++) {
jack_port_unregister(ac,ao[i]);
ao[i]=NULL;
delete[] outBufs[i];
}
if (iInBufs!=NULL) delete[] iInBufs;
if (iOutBufs!=NULL) delete[] iOutBufs;
delete[] inBufs;
delete[] outBufs;
delete[] ai;
delete[] ao;
jack_client_close(ac);
ac=NULL;
initialized=false;
return true;
}
bool TAAudioJACK::setRun(bool run) {
if (!initialized) return false;
if (running==run) {
return running;
}
if (run) {
if (jack_activate(ac)) return false;
for (int i=0; i<desc.outChans; i++) {
jack_connect(ac,(desc.name+String(":out")+std::to_string(i)).c_str(),(String("system:playback_")+std::to_string(i+1)).c_str());
}
running=true;
} else {
if (jack_deactivate(ac)) return true;
running=false;
}
return running;
}
bool TAAudioJACK::init(TAAudioDesc& request, TAAudioDesc& response) {
if (initialized) return false;
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if (jack_client_open==NULL) return false;
desc=request;
desc.outFormat=TA_AUDIO_FORMAT_F32;
jack_status_t as;
ac=jack_client_open(desc.name.c_str(),JackNoStartServer,&as);
if (ac==NULL) return false;
desc.name=String(jack_get_client_name(ac));
jack_set_sample_rate_callback(ac,taJACKonSampleRate,this);
jack_set_buffer_size_callback(ac,taJACKonBufferSize,this);
jack_set_process_callback(ac,taJACKProcess,this);
jack_nframes_t count=jack_get_buffer_size(ac);
desc.bufsize=count;
desc.fragments=1;
jack_nframes_t sampleRate=jack_get_sample_rate(ac);
desc.rate=sampleRate;
if (desc.inChans>0) {
inBufs=new float*[desc.inChans];
iInBufs=new float*[desc.inChans];
ai=new jack_port_t*[desc.inChans];
for (int i=0; i<desc.inChans; i++) {
ai[i]=jack_port_register(ac,(String("in")+std::to_string(i)).c_str(),JACK_DEFAULT_AUDIO_TYPE,JackPortIsInput,0);
if (ai[i]==NULL) {
desc.inChans=i;
break;
}
inBufs[i]=new float[count];
}
}
if (desc.outChans>0) {
outBufs=new float*[desc.outChans];
iOutBufs=new float*[desc.outChans];
ao=new jack_port_t*[desc.outChans];
for (int i=0; i<desc.outChans; i++) {
ao[i]=jack_port_register(ac,(String("out")+std::to_string(i)).c_str(),JACK_DEFAULT_AUDIO_TYPE,JackPortIsOutput,0);
if (ao[i]==NULL) {
desc.outChans=i;
break;
}
outBufs[i]=new float[count];
}
}
response=desc;
initialized=true;
return true;
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}