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add WASAPI exclusive mode flag to PortAudio backen

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This commit is contained in:
tildearrow 2023-08-31 04:30:49 -05:00
parent be38b992e3
commit fa7405090e
5 changed files with 78 additions and 9 deletions
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63
src/audio/pa.cpp
View file

@ -21,6 +21,9 @@
#include <vector>
#include "../ta-log.h"
#include "pa.h"
#ifdef _WIN32
#include <pa_win_wasapi.h>
#endif
int taPAProcess(const void* in, void* out, unsigned long nframes, const PaStreamCallbackTimeInfo* timeInfo, PaStreamCallbackFlags flags, void* inst) {
TAAudioPA* instance=(TAAudioPA*)inst;
@ -117,8 +120,18 @@ std::vector<String> TAAudioPA::listAudioDevices() {
if (devInfo==NULL) continue;
if (devInfo->maxOutputChannels<1) continue;
String devName;
const PaHostApiInfo* driverInfo=Pa_GetHostApiInfo(devInfo->hostApi);
if (driverInfo==NULL) {
devName+="[???] ";
} else {
devName+=fmt::sprintf("[%s] ",driverInfo->name);
}
if (devInfo->name!=NULL) {
ret.push_back(String(devInfo->name));
devName+=devInfo->name;
ret.push_back(devName);
}
}
@ -146,11 +159,15 @@ bool TAAudioPA::init(TAAudioDesc& request, TAAudioDesc& response) {
desc.outFormat=TA_AUDIO_FORMAT_F32;
const PaDeviceInfo* devInfo=NULL;
const PaHostApiInfo* driverInfo=NULL;
int outDeviceID=0;
if (desc.deviceName.empty()) {
outDeviceID=Pa_GetDefaultOutputDevice();
devInfo=Pa_GetDeviceInfo(outDeviceID);
if (devInfo!=NULL) {
driverInfo=Pa_GetHostApiInfo(devInfo->hostApi);
}
} else {
int count=Pa_GetDeviceCount();
bool found=false;
@ -164,12 +181,25 @@ bool TAAudioPA::init(TAAudioDesc& request, TAAudioDesc& response) {
if (devInfo==NULL) continue;
if (devInfo->maxOutputChannels<1) continue;
String devName;
driverInfo=Pa_GetHostApiInfo(devInfo->hostApi);
if (driverInfo==NULL) {
devName+="[???] ";
} else {
devName+=fmt::sprintf("[%s] ",driverInfo->name);
}
if (devInfo->name!=NULL) {
if (strcmp(devInfo->name,desc.deviceName.c_str())==0) {
outDeviceID=i;
found=true;
break;
}
devName+=devInfo->name;
} else {
continue;
}
if (devName==desc.deviceName) {
outDeviceID=i;
found=true;
break;
}
}
if (!found) {
@ -190,6 +220,27 @@ bool TAAudioPA::init(TAAudioDesc& request, TAAudioDesc& response) {
outParams.suggestedLatency=(double)(desc.bufsize*desc.fragments)/desc.rate;
outParams.hostApiSpecificStreamInfo=NULL;
if (driverInfo!=NULL) {
if (driverInfo->type==paWASAPI) {
logV("setting WASAPI-specific flags");
PaWasapiStreamInfo* wasapiInfo=new PaWasapiStreamInfo;
memset(wasapiInfo,0,sizeof(PaWasapiStreamInfo));
wasapiInfo->size=sizeof(PaWasapiStreamInfo);
wasapiInfo->hostApiType=paWASAPI;
wasapiInfo->version=1;
wasapiInfo->flags=paWinWasapiThreadPriority;
wasapiInfo->threadPriority=eThreadPriorityProAudio;
wasapiInfo->streamCategory=eAudioCategoryMedia;
wasapiInfo->streamOption=eStreamOptionRaw;
if (desc.wasapiEx) {
wasapiInfo->flags|=paWinWasapiExclusive;
}
outParams.hostApiSpecificStreamInfo=wasapiInfo;
}
}
logV("opening audio device...");
status=Pa_OpenStream(
&ac,

5
src/audio/taAudio.h
View file

@ -58,13 +58,16 @@ struct TAAudioDesc {
unsigned char inChans, outChans;
TAAudioFormat outFormat;
bool wasapiEx;
TAAudioDesc():
rate(0.0),
bufsize(0),
fragments(0),
inChans(0),
outChans(0),
outFormat(TA_AUDIO_FORMAT_F32) {}
outFormat(TA_AUDIO_FORMAT_F32),
wasapiEx(false) {}
};