Question about PortAudio, ASIO, and virtual sound devices

[star69rem]

It seems that virtual sound devices such as Dante Virtual Sound Card and ASIO4ALL return a device count of 0 with ASIO using PortAudio. Is this known/intended? I just want to make sure there isn't something wrong with my compilation of PortAudio with ASIO enabled.

[RossBencina]

Sounds like something is wrong. Certainly ASIO4ALL using PortAudio/ASIO returns the expected number of channels for me.

[star69rem]

I used cmake to generate a Visual Studio 2022 solution. The ASIO SDK was adjacent to the port audio folder, and the build indicated that it found it. Can you think of anything obvious I might have missed?

[star69rem]

If I provide a Visual Studio solution that I used to build the PortAudio static library, could anyone help me troubleshoot this?

[RossBencina]

Are the ASIO devices visible in any other ASIO application?

You can try putting the ASIO dir inside /src/ASIO but to be honest I don't know how our CMake code is handling this. Someone changed it without updating the docs, and I don't use CMake. These two tickets might help. https://github.com/PortAudio/portaudio/issues/518 https://github.com/PortAudio/portaudio/issues/731

[star69rem]

Yes, I can see the ASIO devices in Foobar 2000.

[star69rem]

This is the build log. It compiles successfully. Taking a step back, are devices enumerated differently with ASIO? I'm using Pa_GetHostApiCount, which gives me ASIO as one of the indexes. Pa_GetHostApiInfo just always returns 0 devices even though in Foobar I can see ASIO4ALL.

..\src\common\pa_converters.c(344,32): warning : implicit conversion from 'int' to 'float' changes value from 2147483647 to 2147483648 [-Wimplicit-const-int-float-conversion] ..\src\common\pa_converters.c(389,32): warning : implicit conversion from 'int' to 'float' changes value from 2147483647 to 2147483648 [-Wimplicit-const-int-float-conversion] ..\src\common\pa_converters.c(508,32): warning : implicit conversion from 'int' to 'float' changes value from 2147483647 to 2147483648 [-Wimplicit-const-int-float-conversion] ..\src\hostapi\dsound\pa_win_ds.c(346,13): warning : variable 'minLatencySeconds' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized] ..\src\hostapi\dsound\pa_win_ds.c(351,12): message : uninitialized use occurs here ..\src\hostapi\dsound\pa_win_ds.c(346,10): message : remove the 'if' if its condition is always true ..\src\hostapi\dsound\pa_win_ds.c(332,29): message : initialize the variable 'minLatencySeconds' to silence this warning ..\src\hostapi\dsound\pa_win_ds.c(636,31): warning : suggest braces around initialization of subobject [-Wmissing-braces] ..\src\hostapi\dsound\pa_win_ds.c(639,31): warning : suggest braces around initialization of subobject [-Wmissing-braces] ..\src\hostapi\dsound\pa_win_ds.c(642,31): warning : suggest braces around initialization of subobject [-Wmissing-braces] ..\src\hostapi\dsound\pa_win_ds.c(731,61): warning : suggest braces around initialization of subobject [-Wmissing-braces] ..\src\hostapi\dsound\pa_win_ds.c(732,61): warning : suggest braces around initialization of subobject [-Wmissing-braces] ..\src\hostapi\dsound\pa_win_ds.c(1395,20): warning : variable 'inputSampleFormat' set but not used [-Wunused-but-set-variable] ..\src\hostapi\dsound\pa_win_ds.c(1395,39): warning : variable 'outputSampleFormat' set but not used [-Wunused-but-set-variable] ..\src\hostapi\dsound\pa_win_ds.c(1801,19): warning : unused variable 'minimumPollingPeriodFrames' [-Wunused-variable] ..\src\hostapi\dsound\pa_win_ds.c(1803,19): warning : unused variable 'pollingJitterFrames' [-Wunused-variable] ..\src\hostapi\dsound\pa_win_ds.c(2453,23): warning : variable 'outputLatency' set but not used [-Wunused-but-set-variable] ..\src\hostapi\dsound\pa_win_ds.c(2872,22): warning : unused variable 'result' [-Wunused-variable] ..\src\hostapi\dsound\pa_win_ds.c(2922,13): warning : variable 'hr' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized] ..\src\hostapi\dsound\pa_win_ds.c(2928,13): message : uninitialized use occurs here ..\src\hostapi\dsound\pa_win_ds.c(2922,9): message : remove the 'if' if its condition is always true ..\src\hostapi\dsound\pa_win_ds.c(2908,24): message : initialize the variable 'hr' to silence this warning ..\src\hostapi\dsound\pa_win_ds.c(3076,22): warning : variable 'hr' set but not used [-Wunused-but-set-variable] ..\src\hostapi\wasapi\pa_win_wasapi.c(1614,17): warning : enumeration value 'eStreamOptionNone' not handled in switch [-Wswitch] ..\src\hostapi\wasapi\pa_win_wasapi.c(287,15): warning : unused variable 'pa_KSDATAFORMAT_SUBTYPE_ADPCM' [-Wunused-const-variable] ..\src\hostapi\wasapi\pa_win_wasapi.c(2442,16): warning : unused function 'UpdateDeviceList' [-Wunused-function] ..\src\hostapi\wdmks\pa_win_wdmks.c(1119,27): warning : unused variable 'nConn' [-Wunused-variable] ..\src\hostapi\wdmks\pa_win_wdmks.c(2205,31): warning : suggest braces around initialization of subobject [-Wmissing-braces] C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\shared\mmreg.h(2469,66): message : expanded from macro 'DEFINE_WAVEFORMATEX_GUID' ..\src\hostapi\wdmks\pa_win_wdmks.c(164,29): message : expanded from macro 'DYNAMIC_GUID' ..\src\hostapi\wdmks\pa_win_wdmks.c(6508,24): warning : variable 'frameCount' set but not used [-Wunused-but-set-variable] ..\src\hostapi\wdmks\pa_win_wdmks.c(6589,14): warning : variable 'frameCount' set but not used [-Wunused-but-set-variable] ..\src\hostapi\wdmks\pa_win_wdmks.c(6592,20): warning : unused variable 'halfInputBuffer' [-Wunused-variable] ..\src\hostapi\wdmks\pa_win_wdmks.c(6643,20): warning : unused variable 'halfInputBuffer' [-Wunused-variable] ..\src\hostapi\wdmks\pa_win_wdmks.c(770,16): warning : unused function 'WdmSetPropertySimple' [-Wunused-function] ..\src\hostapi\wdmks\pa_win_wdmks.c(641,13): warning : unused function 'IsDeviceTheSame' [-Wunused-function] ..\src\hostapi\wmme\pa_win_wmme.c(2499,14): warning : variable 'framesPerBufferProcessorCall' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized] ..\src\hostapi\wmme\pa_win_wmme.c(2511,21): message : uninitialized use occurs here ..\src\hostapi\wmme\pa_win_wmme.c(2499,10): message : remove the 'if' if its condition is always true ..\src\hostapi\wmme\pa_win_wmme.c(2311,47): message : initialize the variable 'framesPerBufferProcessorCall' to silence this warning ..\src\os\win\pa_win_waveformat.c(55,50): warning : suggest braces around initialization of subobject [-Wmissing-braces] ..\src\os\win\pa_win_wdmks_utils.c(73,50): warning : suggest braces around initialization of subobject [-Wmissing-braces] C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\shared\ksmedia.h(726,34): message : expanded from macro 'STATIC_KSDATAFORMAT_TYPE_AUDIO' ..\src\os\win\pa_win_wdmks_utils.c(76,58): warning : suggest braces around initialization of subobject [-Wmissing-braces] C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\shared\mmreg.h(2482,5): message : expanded from macro 'STATIC_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT' C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\shared\mmreg.h(2469,66): message : expanded from macro 'DEFINE_WAVEFORMATEX_GUID' ..\src\os\win\pa_win_wdmks_utils.c(79,51): warning : suggest braces around initialization of subobject [-Wmissing-braces] C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\shared\mmreg.h(2474,5): message : expanded from macro 'STATIC_KSDATAFORMAT_SUBTYPE_PCM' C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\shared\mmreg.h(2469,66): message : expanded from macro 'DEFINE_WAVEFORMATEX_GUID' ..\src\os\win\pa_win_wdmks_utils.c(82,60): warning : suggest braces around initialization of subobject [-Wmissing-braces] C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\shared\mmreg.h(2489,34): message : expanded from macro 'STATIC_KSDATAFORMAT_SUBTYPE_WAVEFORMATEX' ..\src\os\win\pa_win_wdmks_utils.c(85,49): warning : suggest braces around initialization of subobject [-Wmissing-braces] C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\shared\ks.h(1022,34): message : expanded from macro 'STATIC_KSMEDIUMSETID_Standard' ..\src\os\win\pa_win_wdmks_utils.c(88,52): warning : suggest braces around initialization of subobject [-Wmissing-braces] C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\shared\ks.h(998,34): message : expanded from macro 'STATIC_KSINTERFACESETID_Standard' ..\src\os\win\pa_win_wdmks_utils.c(91,42): warning : suggest braces around initialization of subobject [-Wmissing-braces] C:\Program Files (x86)\Windows Kits\10\Include\10.0.22621.0\shared\ks.h(1032,34): message : expanded from macro 'STATIC_KSPROPSETID_Pin' ..\src\hostapi\asio\ASIOSDK\host\pc\asiolist.cpp(137,9): warning : variable 'fin' set but not used [-Wunused-but-set-variable] ..\src\hostapi\asio\pa_asio.cpp(2960,36): warning : increment of object of volatile-qualified type 'volatile long' is deprecated [-Wdeprecated-volatile] ..\src\hostapi\asio\pa_asio.cpp(3921,13): warning : unused variable 'result' [-Wunused-variable] ..\src\hostapi\asio\pa_asio.cpp(1898,13): warning : unused function 'IsUsingExternalClockSource' [-Wunused-function] portaudio.vcxproj -> C:\msys64\portaudio\msvc\x64\Debug\portaudio.lib

[star69rem]

Also, I tried using the mvsc solution to build. Same results as with cmake.

[RossBencina]

The build log looks okish. Certainly pa_asio.cpp is being built.

Could you try building the pa_devs program, run it and give us the program output please?