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/*
* This file is part of mpv.
*
* Original author: Jonathan Yong <10walls@gmail.com>
*
* mpv is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef MP_AO_WASAPI_H_
#define MP_AO_WASAPI_H_
#define COBJMACROS 1
#define _WIN32_WINNT 0x600
#include <audioclient.h>
#include <mmdeviceapi.h>
#include <avrt.h>
typedef struct wasapi_state {
struct mp_log *log;
HANDLE threadLoop;
/* Init phase */
int init_ret;
HANDLE init_done;
HANDLE fatal_error; /* signal to indicate unrecoverable error */
int share_mode;
/* Events */
HANDLE hPause;
/* Play */
HANDLE hPlay;
int is_playing;
/* Reset */
HANDLE hReset;
/* uninit */
HANDLE hUninit;
LONG immed;
/* volume control */
HANDLE hGetvol, hSetvol, hDoneVol;
DWORD vol_hw_support, status;
float audio_volume;
/* Buffers */
size_t buffer_block_size; /* Size of each block in bytes */
REFERENCE_TIME
minRequestedDuration; /* minimum wasapi buffer block size, in 100-nanosecond units */
REFERENCE_TIME
defaultRequestedDuration; /* default wasapi default block size, in 100-nanosecond units */
UINT32 bufferFrameCount; /* wasapi buffer block size, number of frames, frame size at format.nBlockAlign */
/* WASAPI handles, owned by other thread */
IMMDevice *pDevice;
IAudioClient *pAudioClient;
IAudioRenderClient *pRenderClient;
IAudioEndpointVolume *pEndpointVolume;
HANDLE hFeed; /* wasapi event */
HANDLE hTask; /* AV thread */
DWORD taskIndex; /* AV task ID */
WAVEFORMATEXTENSIBLE format;
/* WASAPI internal clock information, for estimating delay */
IAudioClock *pAudioClock;
UINT64 clock_frequency; /* scale for the "samples" returned by the clock */
UINT64 sample_count; /* the amount of samples per channel written to a GetBuffer buffer */
LARGE_INTEGER qpc_frequency; /* frequency of windows' high resolution timer */
int opt_exclusive;
int opt_list;
char *opt_device;
/* We still need to support XP, don't use these functions directly, blob owned by main thread */
struct {
HMODULE hAvrt;
HANDLE (WINAPI *pAvSetMmThreadCharacteristicsW)(LPCWSTR, LPDWORD);
WINBOOL (WINAPI *pAvRevertMmThreadCharacteristics)(HANDLE);
} VistaBlob;
} wasapi_state;
#endif
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