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improve audio export options - UNTESTED/UNFINISHED

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This commit is contained in:
tildearrow 2024-05-10 20:01:12 -05:00
parent e5026e43aa
commit 008fe4b6b8
8 changed files with 112 additions and 60 deletions
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48
src/engine/wavOps.cpp
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@ -45,7 +45,7 @@ void DivEngine::runExportThread() {
SF_INFO si;
SFWrapper sfWrap;
si.samplerate=got.rate;
si.channels=2;
si.channels=exportOutputs;
si.format=SF_FORMAT_WAV|SF_FORMAT_PCM_16;
sf=sfWrap.doOpen(exportPath.c_str(),SFM_WRITE,&si);
@ -55,10 +55,12 @@ void DivEngine::runExportThread() {
return;
}
float* outBuf[3];
outBuf[0]=new float[EXPORT_BUFSIZE];
outBuf[1]=new float[EXPORT_BUFSIZE];
outBuf[2]=new float[EXPORT_BUFSIZE*2];
float* outBuf[DIV_MAX_OUTPUTS];
float* outBufFinal;
for (int i=0; i<exportOutputs; i++) {
outBuf[i]=new float[EXPORT_BUFSIZE];
}
outBufFinal=new float[EXPORT_BUFSIZE*exportOutputs];
// take control of audio output
deinitAudioBackend();
@ -68,24 +70,27 @@ void DivEngine::runExportThread() {
while (playing) {
size_t total=0;
nextBuf(NULL,outBuf,0,2,EXPORT_BUFSIZE);
nextBuf(NULL,outBuf,0,exportOutputs,EXPORT_BUFSIZE);
if (totalProcessed>EXPORT_BUFSIZE) {
logE("error: total processed is bigger than export bufsize! %d>%d",totalProcessed,EXPORT_BUFSIZE);
totalProcessed=EXPORT_BUFSIZE;
}
int fi=0;
for (int i=0; i<(int)totalProcessed; i++) {
total++;
if (isFadingOut) {
double mul=(1.0-((double)curFadeOutSample/(double)fadeOutSamples));
outBuf[2][i<<1]=MAX(-1.0f,MIN(1.0f,outBuf[0][i]))*mul;
outBuf[2][1+(i<<1)]=MAX(-1.0f,MIN(1.0f,outBuf[1][i]))*mul;
for (int j=0; j<exportOutputs; j++) {
outBufFinal[fi++]=MAX(-1.0f,MIN(1.0f,outBuf[j][i]))*mul;
}
if (++curFadeOutSample>=fadeOutSamples) {
playing=false;
break;
}
} else {
outBuf[2][i<<1]=MAX(-1.0f,MIN(1.0f,outBuf[0][i]));
outBuf[2][1+(i<<1)]=MAX(-1.0f,MIN(1.0f,outBuf[1][i]));
for (int j=0; j<exportOutputs; j++) {
outBufFinal[fi++]=MAX(-1.0f,MIN(1.0f,outBuf[j][i]));
}
if (lastLoopPos>-1 && i>=lastLoopPos && totalLoops>=exportLoopCount) {
logD("start fading out...");
isFadingOut=true;
@ -94,15 +99,16 @@ void DivEngine::runExportThread() {
}
}
if (sf_writef_float(sf,outBuf[2],total)!=(int)total) {
if (sf_writef_float(sf,outBufFinal,total)!=(int)total) {
logE("error: failed to write entire buffer!");
break;
}
}
delete[] outBuf[0];
delete[] outBuf[1];
delete[] outBuf[2];
delete[] outBufFinal;
for (int i=0; i<exportOutputs; i++) {
delete[] outBuf[i];
}
if (sfWrap.doClose()!=0) {
logE("could not close audio file!");
@ -369,18 +375,17 @@ void DivEngine::runExportThread() {
#endif
bool DivEngine::shallSwitchCores() {
// TODO: detect whether we should
return true;
}
bool DivEngine::saveAudio(const char* path, int loops, DivAudioExportModes mode, double fadeOutTime) {
bool DivEngine::saveAudio(const char* path, DivAudioExportOptions options) {
#ifndef HAVE_SNDFILE
logE("Furnace was not compiled with libsndfile. cannot export!");
return false;
#else
exportPath=path;
exportMode=mode;
exportFadeOut=fadeOutTime;
exportMode=options.mode;
exportFadeOut=options.fadeOut;
if (exportMode!=DIV_EXPORT_MODE_ONE) {
// remove extension
String lowerCase=exportPath;
@ -412,7 +417,12 @@ bool DivEngine::saveAudio(const char* path, int loops, DivAudioExportModes mode,
}
}
exportLoopCount=loops;
got.rate=options.sampleRate;
exportOutputs=options.chans;
if (exportOutputs<1) exportOutputs=1;
if (exportOutputs>DIV_MAX_OUTPUTS) exportOutputs=DIV_MAX_OUTPUTS;
exportLoopCount=options.loops+1;
exportThread=new std::thread(_runExportThread,this);
return true;
#endif