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AvSetMmThreadCharacteristicsA function (avrt.h) - …
https://docs.microsoft.com/en-us/windows/win32/api/avrt/nf-avrt-avsetmmthreadcharacteristicsa
The avrt.h header defines AvSetMmThreadCharacteristics as an alias which automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that not encoding-neutral can lead to mismatches that result in compilation or runtime errors.
Tracking down calls to AvSetMmThreadCharacteristics ...
https://matthewvaneerde.wordpress.com/2018/09/13/tracking-down-calls-to-avsetmmthreadcharacteristics/
Download mmcss.wprp (right-click the link and save) Open an elevated Command Prompt or PowerShell window Run wpr.exe -start mmcss.wprp Launch the app Create some audio objects and let them run for one second or so Close the app Run wpr.exe -stop mmcss.etl (you can change the output file name if you like) Inspect the resulting mmcss.etl file
AvSetMmThreadCharacteristics fails with error 565 …
https://social.msdn.microsoft.com/Forums/en-US/78845249-cadf-4015-9b32-18b58ccafa00/avsetmmthreadcharacteristics-fails-with-error-565-errortoomanythreads
At the beginning of our audio threads, we call AvSetMmThreadCharacteristics (). This has historyically been functional and stable. Recently we have seen a few failures with GetLastError () returning 565, which resolves to ERROR_TOO_MANY_THREADS and has the following description.
LNK 2019 for AvSetMmThreadCharacteristics- Error in …
https://social.msdn.microsoft.com/Forums/windowsdesktop/en-US/a55a965c-ef35-4305-a543-3e6c3c61dbef/lnk-2019-for-avsetmmthreadcharacteristics-error-in-wasapi-code
Whenever you call a Windows SDK function, you need to #include the right .h file (in this case, avrt.h) and you also need to link against the right .lib file (in this case, avrt.lib.
c++ - Can I set a single thread's priority above 15 for a ...
https://stackoverflow.com/questions/10639285/can-i-set-a-single-threads-priority-above-15-for-a-normal-priority-process
Next thing to try is calling AvSetMmThreadCharacteristics ("Pro Audio") Update: Scheduling heartbeat thread as "Pro Audio" does work to increase the thread's priority beyond 15 (Base=1, Dynamic=24) but it doesn't seem to make any real difference when defrag is running.
What API is being used to play or record audio? – …
https://matthewvaneerde.wordpress.com/2018/11/12/what-api-is-being-used-to-play-or-record-audio/
Download audio-client-stack.wprp (right-click the link and save the file rather than opening it in the browser) From an elevated Command Prompt or PowerShell window: wpr.exe -start audio-client-stack.wprp (run the app and trigger the audio activity) wpr.exe -stop some-filename.etl Open some-filename.etl in Windows Performance Analyzer
Multimedia Class Scheduler Service - Win32 apps ...
https://docs.microsoft.com/en-us/windows/win32/procthread/multimedia-class-scheduler-service
Each thread that is performing work related to a particular task calls the AvSetMmMaxThreadCharacteristics or AvSetMmThreadCharacteristics function to inform MMCSS that it is working on that task. For an example of a program that uses MMCSS, see Exclusive-Mode Streams. Windows Server 2003 and Windows XP: MMCSS is not available. …
AudioCapture.cpp - Stanford University
https://graphics.stanford.edu/~mdfisher/Code/Engine/AudioCapture.cpp.html
AudioCapture.cpp. /* AudioCapture.cpp Written by Matthew Fisher AudioCapture class used by VideoCompressor to capture the current audio stream. */ // // This code is modified from the WASAPICaptureSharedTimerDriven sample in the Windows SDK. // #ifdef USE_WMF #include <MMDeviceAPI.h> #include <AudioClient.h> #include <AudioPolicy.h> #include ...
C++ (Cpp) IAudioCaptureClient Examples ...
https://cpp.hotexamples.com/examples/-/IAudioCaptureClient/-/cpp-iaudiocaptureclient-class-examples.html
C++ (Cpp) IAudioCaptureClient - 10 examples found. These are the top rated real world C++ (Cpp) examples of IAudioCaptureClient extracted from open source projects. You can rate examples to help us improve the quality of examples.
WASAPI C++ DLL Threads hanging in C# App - Stack …
https://stackoverflow.com/questions/12864195/wasapi-c-dll-threads-hanging-in-c-sharp-app
I have an unmanaged dll for an audio app that creates a thread and waits for an event from the sound card to fill the output buffer. The app works fine with the onboard sound card but if I switch to any usb audio device the thread just hangs. Here's the main code bits: I initialize my Event in my Initialize function. ::Initialize ...
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