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ASIO backend, part 2

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half-working:
- crashes on exit
- doesn't work on launch (must go to settings > audio and click OK)
This commit is contained in:
tildearrow 2025-10-25 04:30:23 -05:00
parent 0cec98199e
commit f5fd8102c7
7 changed files with 170 additions and 12 deletions
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133
src/audio/asio.cpp
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@ -52,6 +52,98 @@ void TAAudioASIO::onProcess(int index) {
}
// upload here...
for (int i=0; i<totalChans; i++) {
if (chanInfo[i].isInput==ASIOTrue) continue;
int ch=chanInfo[i].channel;
if (ch>=desc.outChans) continue;
float* srcBuf=outBufs[ch];
switch (chanInfo[i].type) {
// little-endian
case ASIOSTInt16LSB: {
short* buf=(short*)bufInfo[i].buffers[index];
for (unsigned int j=0; j<desc.bufsize; j++) {
buf[j]=CLAMP(srcBuf[j],-1.0,1.0)*32767.0f;
}
break;
}
// TODO: how does this work? it's vaguely described in the docs
case ASIOSTInt24LSB: {
break;
}
case ASIOSTInt32LSB: {
int* buf=(int*)bufInfo[i].buffers[index];
for (unsigned int j=0; j<desc.bufsize; j++) {
int val=CLAMP(srcBuf[j],-1.0,1.0)*8388608.0f;
if (val<-8388608) val=-8388608;
if (val>8388607) val=-8388607;
val<<=8;
buf[j]=val;
}
break;
}
case ASIOSTFloat32LSB: {
float* buf=(float*)bufInfo[i].buffers[index];
for (unsigned int j=0; j<desc.bufsize; j++) {
buf[j]=srcBuf[j];
}
break;
}
case ASIOSTFloat64LSB: {
double* buf=(double*)bufInfo[i].buffers[index];
for (unsigned int j=0; j<desc.bufsize; j++) {
buf[j]=srcBuf[j];
}
break;
}
// TODO: implement these formats D:
// big-endian
case ASIOSTInt16MSB: {
break;
}
case ASIOSTInt24MSB: {
break;
}
case ASIOSTInt32MSB: {
break;
}
case ASIOSTFloat32MSB: {
break;
}
case ASIOSTFloat64MSB: {
break;
}
// what the hell..............
case ASIOSTInt32LSB16: {
break;
}
case ASIOSTInt32LSB18: {
break;
}
case ASIOSTInt32LSB20: {
break;
}
case ASIOSTInt32LSB24: {
break;
}
case ASIOSTInt32MSB16: {
break;
}
case ASIOSTInt32MSB18: {
break;
}
case ASIOSTInt32MSB20: {
break;
}
case ASIOSTInt32MSB24: {
break;
}
default: // unsupported
break;
}
}
/*if (nframes!=desc.bufsize) {
desc.bufsize=nframes;
@ -66,29 +158,41 @@ bool TAAudioASIO::quit() {
if (!initialized) return false;
if (running) {
logV("CRASH: STOPPING NOW (QUIT)......");
ASIOStop();
running=false;
}
logV("CRASH: ASIODisposeBuffers()");
ASIODisposeBuffers();
logV("CRASH: erase inBufs");
for (int i=0; i<desc.inChans; i++) {
delete[] inBufs[i];
inBufs[i]=NULL;
}
logV("CRASH: erase outBufs");
for (int i=0; i<desc.outChans; i++) {
delete[] outBufs[i];
outBufs[i]=NULL;
}
delete[] inBufs;
delete[] outBufs;
inBufs=NULL;
outBufs=NULL;
logV("CRASH: erase arrays");
if (inBufs!=NULL) {
delete[] inBufs;
inBufs=NULL;
}
if (outBufs!=NULL) {
delete[] outBufs;
outBufs=NULL;
}
logV("CRASH: ASIOExit()");
ASIOExit();
logV("CRASH: removeCurrentDriver()");
drivers.removeCurrentDriver();
logV("CRASH: reset callback instance");
callbackInstance=NULL;
initialized=false;
@ -105,6 +209,7 @@ bool TAAudioASIO::setRun(bool run) {
running=true;
} else {
// does it matter whether stop was successful?
logV("CRASH: STOPPING NOW......");
ASIOStop();
running=false;
}
@ -124,6 +229,13 @@ bool TAAudioASIO::init(TAAudioDesc& request, TAAudioDesc& response) {
if (desc.deviceName.empty()) {
// load first driver if not specified
logV("getting driver names...");
if (!driverNamesInit) {
for (int i=0; i<ASIO_DRIVER_MAX; i++) {
// 64 just in case
driverNames[i]=new char[64];
}
driverNamesInit=true;
}
driverCount=drivers.getDriverNames(driverNames,ASIO_DRIVER_MAX);
// quit if we couldn't find any drivers
@ -136,7 +248,7 @@ bool TAAudioASIO::init(TAAudioDesc& request, TAAudioDesc& response) {
}
// load driver
logV("loading ASIO driver...");
logV("loading ASIO driver... (%s)",desc.deviceName);
strncpy(deviceNameCopy,desc.deviceName.c_str(),63);
if (!drivers.loadDriver(deviceNameCopy)) {
logE("failed to load ASIO driver!");
@ -225,7 +337,7 @@ bool TAAudioASIO::init(TAAudioDesc& request, TAAudioDesc& response) {
chanInfo[totalChans].isInput=ASIOFalse;
ASIOGetChannelInfo(&chanInfo[totalChans]);
bufInfo[totalChans].channelNum=i;
bufInfo[totalChans++].isInput=ASIOTrue;
bufInfo[totalChans++].isInput=ASIOFalse;
outBufs[i]=new float[actualBufSize];
}
}
@ -268,7 +380,14 @@ bool TAAudioASIO::init(TAAudioDesc& request, TAAudioDesc& response) {
std::vector<String> TAAudioASIO::listAudioDevices() {
std::vector<String> ret;
memset(driverNames,0,sizeof(void*)*ASIO_DRIVER_MAX);
if (!driverNamesInit) {
for (int i=0; i<ASIO_DRIVER_MAX; i++) {
// 64 just in case
driverNames[i]=new char[64];
}
driverNamesInit=true;
}
driverCount=drivers.getDriverNames(driverNames,ASIO_DRIVER_MAX);
for (int i=0; i<driverCount; i++) {
ret.push_back(driverNames[i]);