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Code Issues Releases Wiki Activity

Recreate and apply the WASAPI loopback patch

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This commit is contained in:
Leland Lucius
2019-12-15 02:38:06 -06:00
parent e3e1758110
commit be7467c0e3
3 changed files with 168 additions and 90 deletions
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87
lib-src/portaudio-v19/src/hostapi/wasapi/pa_win_wasapi.c
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@@ -449,6 +449,9 @@ typedef struct PaWasapiDeviceInfo
// Formfactor
EndpointFormFactor formFactor;
// Loopback indicator
int loopBack;
}
PaWasapiDeviceInfo;
@@ -1674,6 +1677,8 @@ static PaError CreateDeviceList(PaWasapiHostApiRepresentation *paWasapi, PaHostA
IMMDeviceEnumerator *pEnumerator = NULL;
#endif
IAudioClient *tmpClient;
UINT renderCount;
INT devIndex;
// Make sure device list empty
if ((paWasapi->deviceCount != 0) || (hostApi->info.deviceCount != 0))
@@ -1738,6 +1743,19 @@ static PaError CreateDeviceList(PaWasapiHostApiRepresentation *paWasapi, PaHostA
}
}
hr = IMMDeviceEnumerator_EnumAudioEndpoints(pEnumerator, eRender, DEVICE_STATE_ACTIVE, &pEndPoints);
// We need to set the result to a value otherwise we will return paNoError
// [IF_FAILED_JUMP(hResult, error);]
IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
hr = IMMDeviceCollection_GetCount(pEndPoints, &renderCount);
// We need to set the result to a value otherwise we will return paNoError
// [IF_FAILED_JUMP(hResult, error);]
IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
SAFE_RELEASE(pEndPoints);
pEndPoints = NULL;
hr = IMMDeviceEnumerator_EnumAudioEndpoints(pEnumerator, eAll, DEVICE_STATE_ACTIVE, &pEndPoints);
// We need to set the result to a value otherwise we will return paNoError
// [IF_FAILED_JUMP(hResult, error);]
@@ -1748,6 +1766,7 @@ static PaError CreateDeviceList(PaWasapiHostApiRepresentation *paWasapi, PaHostA
// [IF_FAILED_JUMP(hResult, error);]
IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
paWasapi->deviceCount += renderCount;
#else
// Determine number of available devices by activating AudioClient for render and capture data flows
if (SUCCEEDED(ActivateAudioInterface_WINRT(eRender, GetAudioClientIID(), &tmpClient)))
@@ -1797,7 +1816,7 @@ static PaError CreateDeviceList(PaWasapiHostApiRepresentation *paWasapi, PaHostA
}
memset(deviceInfoArray, 0, sizeof(PaDeviceInfo) * deviceCount);
for (i = 0; i < paWasapi->deviceCount; ++i)
for (devIndex = 0, i = 0; i < paWasapi->deviceCount; ++i, ++devIndex)
{
PaDeviceInfo *deviceInfo = &deviceInfoArray[i];
deviceInfo->structVersion = 2;
@@ -1807,7 +1826,7 @@ static PaError CreateDeviceList(PaWasapiHostApiRepresentation *paWasapi, PaHostA
PA_DEBUG(("WASAPI: ---------------\n"));
#ifndef PA_WINRT
hr = IMMDeviceCollection_Item(pEndPoints, i, &paWasapi->devInfo[i].device);
hr = IMMDeviceCollection_Item(pEndPoints, devIndex, &paWasapi->devInfo[i].device);
// We need to set the result to a value otherwise we will return paNoError
// [IF_FAILED_JUMP(hResult, error);]
IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
@@ -2039,6 +2058,42 @@ static PaError CreateDeviceList(PaWasapiHostApiRepresentation *paWasapi, PaHostA
hostApi->deviceInfos[i] = deviceInfo;
++hostApi->info.deviceCount;
if (paWasapi->devInfo[i].flow == eRender)
{
char *deviceName;
memcpy(&deviceInfoArray[i + 1], deviceInfo, sizeof(*deviceInfo));
memcpy(&paWasapi->devInfo[i + 1], &paWasapi->devInfo[i], sizeof(*paWasapi->devInfo));
i++;
paWasapi->devInfo[i].loopBack = 1;
deviceInfo = &deviceInfoArray[i];
deviceInfo->maxInputChannels = deviceInfo->maxOutputChannels;
deviceInfo->defaultHighInputLatency = deviceInfo->defaultHighOutputLatency;
deviceInfo->defaultLowInputLatency = deviceInfo->defaultLowOutputLatency;
deviceInfo->maxOutputChannels = 0;
deviceInfo->defaultHighOutputLatency = 0;
deviceInfo->defaultLowOutputLatency = 0;
PA_DEBUG(("WASAPI:%d| def.SR[%d] max.CH[%d] latency{hi[%f] lo[%f]}\n", i, (UINT32)deviceInfo->defaultSampleRate,
deviceInfo->maxInputChannels, (float)deviceInfo->defaultHighInputLatency, (float)deviceInfo->defaultLowInputLatency));
IMMDevice_AddRef(paWasapi->devInfo[i].device);
deviceName = (char *)PaUtil_GroupAllocateMemory(paWasapi->allocations, MAX_STR_LEN + 1);
if (deviceName == NULL)
{
result = paInsufficientMemory;
goto error;
}
_snprintf(deviceName, MAX_STR_LEN-1, "%s (loopback)", deviceInfo->name);
deviceInfo->name = deviceName;
hostApi->deviceInfos[i] = deviceInfo;
++hostApi->info.deviceCount;
}
}
#if defined(PA_WASAPI_MAX_CONST_DEVICE_COUNT) && (PA_WASAPI_MAX_CONST_DEVICE_COUNT > 0)
@@ -2392,6 +2447,29 @@ int PaWasapi_GetDeviceRole( PaDeviceIndex device )
return paWasapi->devInfo[ index ].formFactor;
}
// ------------------------------------------------------------------------------------------
int PaWasapi_IsLoopback( PaDeviceIndex nDevice )
{
PaError ret;
PaDeviceIndex index;
// Get API
PaWasapiHostApiRepresentation *paWasapi = _GetHostApi(&ret);
if (paWasapi == NULL)
return paNotInitialized;
// Get device index
ret = PaUtil_DeviceIndexToHostApiDeviceIndex(&index, nDevice, &paWasapi->inheritedHostApiRep);
if (ret != paNoError)
return ret;
// Validate index
if ((UINT32)index >= paWasapi->deviceCount)
return paInvalidDevice;
return paWasapi->devInfo[ index ].loopBack;
}
// ------------------------------------------------------------------------------------------
PaError PaWasapi_GetFramesPerHostBuffer( PaStream *pStream, unsigned int *pInput, unsigned int *pOutput )
{
@@ -3055,7 +3133,7 @@ static HRESULT CreateAudioClient(PaWasapiStream *pStream, PaWasapiSubStream *pSu
if ((params->channelCount == 1) && (pSub->wavex.Format.nChannels == 2))
{
// select mixer
pSub->monoMixer = GetMonoToStereoMixer(&pSub->wavex, (pInfo->flow == eRender ? MIX_DIR__1TO2 : MIX_DIR__2TO1_L));
pSub->monoMixer = GetMonoToStereoMixer(&pSub->wavex, (output ? MIX_DIR__1TO2 : MIX_DIR__2TO1_L));
if (pSub->monoMixer == NULL)
{
(*pa_error) = paInvalidChannelCount;
@@ -3618,6 +3696,9 @@ static PaError OpenStream( struct PaUtilHostApiRepresentation *hostApi,
((inputStreamInfo != NULL) && (inputStreamInfo->flags & paWinWasapiAutoConvert)))
stream->in.streamFlags |= (AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM | AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY);
if (info->flow == eRender)
stream->in.streamFlags |= AUDCLNT_STREAMFLAGS_LOOPBACK;
// Fill parameters for Audio Client creation
stream->in.params.device_info = info;
stream->in.params.stream_params = (*inputParameters);