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ASIO backend, part 7

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implement the rest of sample formats
This commit is contained in:
tildearrow 2025-10-25 21:05:15 -05:00
parent 039a23500b
commit 8ed69b7a5d
1 changed files with 62 additions and 33 deletions
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95
src/audio/asio.cpp
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@ -75,6 +75,7 @@ void TAAudioASIO::onSampleRate(double rate) {
void TAAudioASIO::onBufferSize(int bufsize) {
bufferSizeChanged(BufferSizeChangeEvent(bufsize));
desc.bufsize=bufsize;
}
void TAAudioASIO::onProcess(int index) {
@ -99,11 +100,23 @@ void TAAudioASIO::onProcess(int index) {
}
break;
}
// TODO: how does this work? it's vaguely described in the docs
case ASIOSTInt24LSB: {
unsigned char* buf=(unsigned char*)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;
*(buf++)=(val)&0xff;
*(buf++)=(val>>8)&0xff;
*(buf++)=(val>>16)&0xff;
}
break;
}
case ASIOSTInt32LSB: {
case ASIOSTInt32LSB:
case ASIOSTInt32LSB16:
case ASIOSTInt32LSB18:
case ASIOSTInt32LSB20:
case ASIOSTInt32LSB24: {
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;
@ -129,57 +142,73 @@ void TAAudioASIO::onProcess(int index) {
break;
}
// TODO: implement these formats D:
// big-endian
case ASIOSTInt16MSB: {
unsigned short* buf=(unsigned short*)bufInfo[i].buffers[index];
for (unsigned int j=0; j<desc.bufsize; j++) {
unsigned short val=(unsigned short)((short)(CLAMP(srcBuf[j],-1.0,1.0)*32767.0f));
buf[j]=(val>>8)|(val<<8);
}
break;
}
case ASIOSTInt24MSB: {
unsigned char* buf=(unsigned char*)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;
*(buf++)=(val>>16)&0xff;
*(buf++)=(val>>8)&0xff;
*(buf++)=(val)&0xff;
}
break;
}
case ASIOSTInt32MSB: {
case ASIOSTInt32MSB:
case ASIOSTInt32MSB16:
case ASIOSTInt32MSB18:
case ASIOSTInt32MSB20:
case ASIOSTInt32MSB24: {
unsigned int* buf=(unsigned 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;
unsigned char* uVal=(unsigned char*)&val;
buf[j]=(uVal[0]<<24)|(uVal[1]<<16)|(uVal[2]<<8)|(uVal[3]);
}
break;
}
case ASIOSTFloat32MSB: {
unsigned int* buf=(unsigned int*)bufInfo[i].buffers[index];
for (unsigned int j=0; j<desc.bufsize; j++) {
float val=srcBuf[j];
unsigned char* uVal=(unsigned char*)&val;
buf[j]=(uVal[0]<<24)|(uVal[1]<<16)|(uVal[2]<<8)|(uVal[3]);
}
break;
}
case ASIOSTFloat64MSB: {
unsigned char* buf=(unsigned char*)bufInfo[i].buffers[index];
for (unsigned int j=0; j<desc.bufsize; j++) {
double val=srcBuf[j];
unsigned char* uVal=(unsigned char*)&val;
*(buf++)=uVal[7];
*(buf++)=uVal[6];
*(buf++)=uVal[5];
*(buf++)=uVal[4];
*(buf++)=uVal[3];
*(buf++)=uVal[2];
*(buf++)=uVal[1];
*(buf++)=uVal[0];
}
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;
}*/
}
String TAAudioASIO::getErrorStr(ASIOError which) {