139 lines
3.1 KiB
C++
139 lines
3.1 KiB
C++
/**
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* Furnace Tracker - multi-system chiptune tracker
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* Copyright (C) 2021-2025 tildearrow and contributors
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <string.h>
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#include "../ta-log.h"
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#include "pipe.h"
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void taPipeThread(void* inst) {
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TAAudioPipe* in=(TAAudioPipe*)inst;
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in->runThread();
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}
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void TAAudioPipe::runThread() {
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while (running) {
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onProcess((unsigned char*)sbuf,desc.bufsize);
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}
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}
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void TAAudioPipe::onProcess(unsigned char* buf, int nframes) {
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if (audioProcCallback!=NULL) {
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if (midiIn!=NULL) midiIn->gather();
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audioProcCallback(audioProcCallbackUser,inBufs,outBufs,desc.inChans,desc.outChans,desc.bufsize);
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}
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short* sb=(short*)buf;
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if (sb==NULL) return;
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for (size_t j=0; j<desc.bufsize; j++) {
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for (size_t i=0; i<desc.outChans; i++) {
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if (outBufs[i][j]<-1.0) outBufs[i][j]=-1.0;
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if (outBufs[i][j]>1.0) outBufs[i][j]=1.0;
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sb[j*desc.outChans+i]=outBufs[i][j]*32767.0;
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}
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}
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fwrite(sb,2,desc.bufsize*desc.outChans,stdout);
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fflush(stdout);
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}
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void* TAAudioPipe::getContext() {
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return NULL;
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}
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bool TAAudioPipe::quit() {
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if (!initialized) return false;
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if (running) {
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running=false;
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if (outThread) {
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outThread->join();
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delete outThread;
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outThread=NULL;
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}
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}
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for (int i=0; i<desc.outChans; i++) {
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delete[] outBufs[i];
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}
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delete[] outBufs;
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if (sbuf) {
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delete[] sbuf;
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sbuf=NULL;
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}
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initialized=false;
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return true;
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}
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bool TAAudioPipe::setRun(bool run) {
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if (!initialized) return false;
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if (running!=run) {
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running=run;
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if (running) {
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outThread=new std::thread(taPipeThread,this);
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} else if (outThread) {
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outThread->join();
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delete outThread;
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outThread=NULL;
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}
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}
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return running;
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}
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std::vector<String> TAAudioPipe::listAudioDevices() {
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std::vector<String> ret;
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ret.push_back("stdout");
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return ret;
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}
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bool TAAudioPipe::init(TAAudioDesc& request, TAAudioDesc& response) {
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if (initialized) {
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logE("audio already initialized");
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return false;
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}
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desc=request;
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desc.outFormat=TA_AUDIO_FORMAT_F32;
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response=desc;
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logV("opening stdout for audio...");
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if (desc.outChans>0) {
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outBufs=new float*[desc.outChans];
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for (int i=0; i<desc.outChans; i++) {
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outBufs[i]=new float[desc.bufsize];
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}
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sbuf=new short[desc.bufsize*desc.outChans];
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} else {
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sbuf=NULL;
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}
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response=desc;
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initialized=true;
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return true;
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}
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