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fade out experiments - DO NOT COMPILE

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This commit is contained in:
tildearrow 2022-06-06 03:05:55 -05:00
parent d1ba9e2c3e
commit b6ea8ede86
6 changed files with 65 additions and 11 deletions
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53
src/engine/engine.cpp
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@ -193,6 +193,9 @@ bool DivEngine::isExporting() {
#ifdef HAVE_SNDFILE
void DivEngine::runExportThread() {
size_t fadeOutSamples=got.rate*exportFadeOut;
size_t curFadeOutSample=0;
bool isFadingOut=false;
switch (exportMode) {
case DIV_EXPORT_MODE_ONE: {
SNDFILE* sf;
@ -220,15 +223,36 @@ void DivEngine::runExportThread() {
logI("rendering to file...");
while (playing) {
size_t total=0;
nextBuf(NULL,outBuf,0,2,EXPORT_BUFSIZE);
for (int i=0; i<EXPORT_BUFSIZE; i++) {
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]));
}
if (totalProcessed>EXPORT_BUFSIZE) {
logE("error: total processed is bigger than export bufsize! %d>%d",totalProcessed,EXPORT_BUFSIZE);
totalProcessed=EXPORT_BUFSIZE;
}
if (sf_writef_float(sf,outBuf[2],totalProcessed)!=(int)totalProcessed) {
if (totalProcessed!=EXPORT_BUFSIZE) {
logW("wait what? %d != %d",totalProcessed,EXPORT_BUFSIZE);
}
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;
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]));
if (lastLoopPos>-1 && i>=lastLoopPos && totalLoops>=exportLoopCount) {
logD("start fading out...");
isFadingOut=true;
}
}
}
if (sf_writef_float(sf,outBuf[2],total)!=(int)total) {
logE("error: failed to write entire buffer!");
break;
}
@ -382,7 +406,12 @@ void DivEngine::runExportThread() {
}
curOrder=0;
remainingLoops=loopCount;
prevOrder=0;
if (exportFadeOut<=0.01) {
remainingLoops=loopCount;
} else {
remainingLoops=-1;
}
playSub(false);
while (playing) {
@ -448,13 +477,14 @@ void DivEngine::runExportThread() {
}
#endif
bool DivEngine::saveAudio(const char* path, int loops, DivAudioExportModes mode) {
bool DivEngine::saveAudio(const char* path, int loops, DivAudioExportModes mode, double fadeOutTime) {
#ifndef HAVE_SNDFILE
logE("Furnace was not compiled with libsndfile. cannot export!");
return false;
#else
exportPath=path;
exportMode=mode;
exportFadeOut=fadeOutTime;
if (exportMode!=DIV_EXPORT_MODE_ONE) {
// remove extension
String lowerCase=exportPath;
@ -471,7 +501,12 @@ bool DivEngine::saveAudio(const char* path, int loops, DivAudioExportModes mode)
stop();
repeatPattern=false;
setOrder(0);
remainingLoops=loops;
if (exportFadeOut<=0.01) {
remainingLoops=loops;
} else {
remainingLoops=-1;
}
exportLoopCount=loops;
exportThread=new std::thread(_runExportThread,this);
return true;
#endif
@ -1131,6 +1166,8 @@ void DivEngine::playSub(bool preserveDrift, int goalRow) {
totalTicks=0;
totalSeconds=0;
totalTicksR=0;
totalLoops=0;
lastLoopPos=-1;
}
speedAB=false;
playing=true;