obs-studio/libobs/audio-monitoring/win32/wasapi-output.h

#pragma once

#include <windows.h>
#include <mmdeviceapi.h>
#include <audioclient.h>

#ifndef KSAUDIO_SPEAKER_2POINT1
#define KSAUDIO_SPEAKER_2POINT1 (KSAUDIO_SPEAKER_STEREO | SPEAKER_LOW_FREQUENCY)
#endif

#define KSAUDIO_SPEAKER_SURROUND_AVUTIL (KSAUDIO_SPEAKER_STEREO | SPEAKER_FRONT_CENTER)

#ifndef KSAUDIO_SPEAKER_4POINT1
#define KSAUDIO_SPEAKER_4POINT1 (KSAUDIO_SPEAKER_SURROUND | SPEAKER_LOW_FREQUENCY)
#endif

#define safe_release(ptr)                          \
	do {                                       \
		if (ptr) {                         \
			ptr->lpVtbl->Release(ptr); \
		}                                  \
	} while (false)