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libobs/media-io: Register audio thread with MMCSS

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Ensure audio gets more priority to help prevent glitching.
This commit is contained in:
jpark37 2021-09-27 00:06:13 -07:00 committed by Jim
parent e69f051736
commit e582879303
2 changed files with 17 additions and 1 deletions
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2
libobs/CMakeLists.txt
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@ -120,7 +120,7 @@ if(WIN32)
set(libobs_audio_monitoring_HEADERS
audio-monitoring/win32/wasapi-output.h
)
set(libobs_PLATFORM_DEPS winmm)
set(libobs_PLATFORM_DEPS Avrt winmm)
if(MSVC)
set(libobs_PLATFORM_DEPS
${libobs_PLATFORM_DEPS}

16
libobs/media-io/audio-io.c
View file

@ -28,6 +28,12 @@
#include "audio-io.h"
#include "audio-resampler.h"
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#include <Windows.h>
#include <avrt.h>
#endif
extern profiler_name_store_t *obs_get_profiler_name_store(void);
/* #define DEBUG_AUDIO */
@ -197,6 +203,11 @@ static void input_and_output(struct audio_output *audio, uint64_t audio_time,
static void *audio_thread(void *param)
{
#ifdef _WIN32
DWORD unused = 0;
const HANDLE handle = AvSetMmThreadCharacteristics(L"Audio", &unused);
#endif
struct audio_output *audio = param;
size_t rate = audio->info.samples_per_sec;
uint64_t samples = 0;
@ -234,6 +245,11 @@ static void *audio_thread(void *param)
profile_reenable_thread();
}
#ifdef _WIN32
if (handle)
AvRevertMmThreadCharacteristics(handle);
#endif
return NULL;
}