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add per-channel audio export

This commit is contained in:
tildearrow 2022-01-18 02:04:03 -05:00
parent 9b8044a401
commit aaca180683
1 changed files with 85 additions and 1 deletions
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86
src/engine/engine.cpp
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@ -2172,6 +2172,10 @@ void DivEngine::runExportThread() {
}
}
delete[] outBuf[0];
delete[] outBuf[1];
delete[] outBuf[2];
if (sf_close(sf)!=0) {
logE("could not close audio file!\n");
}
@ -2204,7 +2208,7 @@ void DivEngine::runExportThread() {
}
for (int i=0; i<song.systemLen; i++) {
fname[i]=fmt::sprintf("%s_%d.wav",exportPath,i+1);
fname[i]=fmt::sprintf("%s_s%d.wav",exportPath,i+1);
sf[i]=sf_open(fname[i].c_str(),SFM_WRITE,&si[i]);
if (sf[i]==NULL) {
logE("could not open file for writing!\n");
@ -2245,6 +2249,10 @@ void DivEngine::runExportThread() {
}
}
delete[] outBuf[0];
delete[] outBuf[1];
delete[] sysBuf;
for (int i=0; i<song.systemLen; i++) {
if (sf_close(sf[i])!=0) {
logE("could not close audio file!\n");
@ -2264,6 +2272,82 @@ void DivEngine::runExportThread() {
break;
}
case DIV_EXPORT_MODE_MANY_CHAN: {
// take control of audio output
deinitAudioBackend();
float* outBuf[3];
outBuf[0]=new float[EXPORT_BUFSIZE];
outBuf[1]=new float[EXPORT_BUFSIZE];
outBuf[2]=new float[EXPORT_BUFSIZE*2];
int loopCount=remainingLoops;
for (int i=0; i<chans; i++) {
SNDFILE* sf;
SF_INFO si;
String fname=fmt::sprintf("%s_c%d.wav",exportPath,i+1);
si.samplerate=got.rate;
si.channels=2;
si.format=SF_FORMAT_WAV|SF_FORMAT_PCM_16;
sf=sf_open(fname.c_str(),SFM_WRITE,&si);
if (sf==NULL) {
logE("could not open file for writing!\n");
break;
}
for (int j=0; j<chans; j++) {
bool mute=(j!=i);
isMuted[j]=mute;
if (disCont[dispatchOfChan[j]].dispatch!=NULL) {
disCont[dispatchOfChan[j]].dispatch->muteChannel(dispatchChanOfChan[j],isMuted[j]);
}
}
curOrder=0;
remainingLoops=loopCount;
playSub(false);
while (playing) {
nextBuf(NULL,outBuf,0,2,EXPORT_BUFSIZE);
for (int j=0; j<EXPORT_BUFSIZE; j++) {
outBuf[2][j<<1]=MAX(-1.0f,MIN(1.0f,outBuf[0][j]));
outBuf[2][1+(j<<1)]=MAX(-1.0f,MIN(1.0f,outBuf[1][j]));
}
if (totalProcessed>EXPORT_BUFSIZE) {
logE("error: total processed is bigger than export bufsize! %d>%d\n",totalProcessed,EXPORT_BUFSIZE);
}
if (sf_writef_float(sf,outBuf[2],totalProcessed)!=(int)totalProcessed) {
logE("error: failed to write entire buffer!\n");
break;
}
}
if (sf_close(sf)!=0) {
logE("could not close audio file!\n");
}
}
exporting=false;
delete[] outBuf[0];
delete[] outBuf[1];
delete[] outBuf[2];
for (int i=0; i<chans; i++) {
isMuted[i]=false;
if (disCont[dispatchOfChan[i]].dispatch!=NULL) {
disCont[dispatchOfChan[i]].dispatch->muteChannel(dispatchChanOfChan[i],false);
}
}
if (initAudioBackend()) {
for (int i=0; i<song.systemLen; i++) {
disCont[i].setRates(got.rate);
disCont[i].setQuality(lowQuality);
}
if (!output->setRun(true)) {
logE("error while activating audio!\n");
}
}
break;
}
}