mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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0cb11c15ed
This allows us to request ultra-low-latency device periods even in shared mode. However, this requires good drivers and Windows 10, so we only enable this when we detect that we are running on Windows 10 at runtime. You can forcibly disable this feature on Windows 10 by setting GST_WASAPI_DISABLE_AUDIOCLIENT3=1 in the environment.
237 lines
7.7 KiB
C
237 lines
7.7 KiB
C
/*
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* Structure and enum definitions are from audioclient.h in the Windows 10 SDK
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*
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* These should be defined by MinGW, but they aren't yet since they're very new
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* so we keep a copy in our tree. All definitions are guarded, so it should be
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* fine to always include this even when building with MSVC.
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*/
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#pragma once
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#ifndef __IAudioClient3_FWD_DEFINED__
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#define __IAudioClient3_FWD_DEFINED__
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typedef interface IAudioClient3 IAudioClient3;
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#endif /* __IAudioClient3_FWD_DEFINED__ */
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#ifndef __IAudioClient3_INTERFACE_DEFINED__
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#define __IAudioClient3_INTERFACE_DEFINED__
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#ifndef AUDIO_STREAM_CATEGORY
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typedef enum _AUDIO_STREAM_CATEGORY {
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AudioCategory_Other = 0,
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AudioCategory_ForegroundOnlyMedia,
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AudioCategory_BackgroundCapableMedia,
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AudioCategory_Communications,
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AudioCategory_Alerts,
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AudioCategory_SoundEffects,
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AudioCategory_GameEffects,
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AudioCategory_GameMedia,
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AudioCategory_GameChat,
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AudioCategory_Speech,
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AudioCategory_Movie,
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AudioCategory_Media
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} AUDIO_STREAM_CATEGORY;
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#endif
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#ifndef AUDCLNT_STREAMOPTIONS
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typedef enum AUDCLNT_STREAMOPTIONS
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{
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AUDCLNT_STREAMOPTIONS_NONE = 0,
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AUDCLNT_STREAMOPTIONS_RAW = 0x1,
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AUDCLNT_STREAMOPTIONS_MATCH_FORMAT = 0x2
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} AUDCLNT_STREAMOPTIONS;
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#endif
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#ifndef AudioClientProperties
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typedef struct AudioClientProperties
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{
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UINT32 cbSize;
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BOOL bIsOffload;
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AUDIO_STREAM_CATEGORY eCategory;
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AUDCLNT_STREAMOPTIONS Options;
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} AudioClientProperties;
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#endif
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EXTERN_C const IID IID_IAudioClient3;
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typedef struct IAudioClient3Vtbl
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{
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BEGIN_INTERFACE
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HRESULT ( STDMETHODCALLTYPE *QueryInterface )(
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IAudioClient3 * This,
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REFIID riid,
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void **ppvObject);
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ULONG ( STDMETHODCALLTYPE *AddRef )(
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IAudioClient3 * This);
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ULONG ( STDMETHODCALLTYPE *Release )(
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IAudioClient3 * This);
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HRESULT ( STDMETHODCALLTYPE *Initialize )(
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IAudioClient3 * This,
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AUDCLNT_SHAREMODE ShareMode,
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DWORD StreamFlags,
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REFERENCE_TIME hnsBufferDuration,
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REFERENCE_TIME hnsPeriodicity,
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const WAVEFORMATEX *pFormat,
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LPCGUID AudioSessionGuid);
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HRESULT ( STDMETHODCALLTYPE *GetBufferSize )(
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IAudioClient3 * This,
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UINT32 *pNumBufferFrames);
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HRESULT ( STDMETHODCALLTYPE *GetStreamLatency )(
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IAudioClient3 * This,
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REFERENCE_TIME *phnsLatency);
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HRESULT ( STDMETHODCALLTYPE *GetCurrentPadding )(
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IAudioClient3 * This,
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UINT32 *pNumPaddingFrames);
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HRESULT ( STDMETHODCALLTYPE *IsFormatSupported )(
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IAudioClient3 * This,
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AUDCLNT_SHAREMODE ShareMode,
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const WAVEFORMATEX *pFormat,
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WAVEFORMATEX **ppClosestMatch);
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HRESULT ( STDMETHODCALLTYPE *GetMixFormat )(
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IAudioClient3 * This,
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WAVEFORMATEX **ppDeviceFormat);
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HRESULT ( STDMETHODCALLTYPE *GetDevicePeriod )(
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IAudioClient3 * This,
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REFERENCE_TIME *phnsDefaultDevicePeriod,
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REFERENCE_TIME *phnsMinimumDevicePeriod);
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HRESULT ( STDMETHODCALLTYPE *Start )(
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IAudioClient3 * This);
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HRESULT ( STDMETHODCALLTYPE *Stop )(
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IAudioClient3 * This);
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HRESULT ( STDMETHODCALLTYPE *Reset )(
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IAudioClient3 * This);
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HRESULT ( STDMETHODCALLTYPE *SetEventHandle )(
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IAudioClient3 * This,
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HANDLE eventHandle);
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HRESULT ( STDMETHODCALLTYPE *GetService )(
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IAudioClient3 * This,
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REFIID riid,
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void **ppv);
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HRESULT ( STDMETHODCALLTYPE *IsOffloadCapable )(
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IAudioClient3 * This,
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AUDIO_STREAM_CATEGORY Category,
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BOOL *pbOffloadCapable);
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HRESULT ( STDMETHODCALLTYPE *SetClientProperties )(
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IAudioClient3 * This,
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const AudioClientProperties *pProperties);
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HRESULT ( STDMETHODCALLTYPE *GetBufferSizeLimits )(
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IAudioClient3 * This,
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const WAVEFORMATEX *pFormat,
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BOOL bEventDriven,
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REFERENCE_TIME *phnsMinBufferDuration,
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REFERENCE_TIME *phnsMaxBufferDuration);
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HRESULT ( STDMETHODCALLTYPE *GetSharedModeEnginePeriod )(
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IAudioClient3 * This,
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const WAVEFORMATEX *pFormat,
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UINT32 *pDefaultPeriodInFrames,
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UINT32 *pFundamentalPeriodInFrames,
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UINT32 *pMinPeriodInFrames,
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UINT32 *pMaxPeriodInFrames);
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HRESULT ( STDMETHODCALLTYPE *GetCurrentSharedModeEnginePeriod )(
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IAudioClient3 * This,
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WAVEFORMATEX **ppFormat,
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UINT32 *pCurrentPeriodInFrames);
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HRESULT ( STDMETHODCALLTYPE *InitializeSharedAudioStream )(
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IAudioClient3 * This,
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DWORD StreamFlags,
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UINT32 PeriodInFrames,
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const WAVEFORMATEX *pFormat,
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LPCGUID AudioSessionGuid);
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END_INTERFACE
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} IAudioClient3Vtbl;
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interface IAudioClient3
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{
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CONST_VTBL struct IAudioClient3Vtbl *lpVtbl;
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};
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#define IAudioClient3_QueryInterface(This,riid,ppvObject) \
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( (This)->lpVtbl -> QueryInterface(This,riid,ppvObject) )
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#define IAudioClient3_AddRef(This) \
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( (This)->lpVtbl -> AddRef(This) )
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#define IAudioClient3_Release(This) \
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( (This)->lpVtbl -> Release(This) )
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#define IAudioClient3_Initialize(This,ShareMode,StreamFlags,hnsBufferDuration,hnsPeriodicity,pFormat,AudioSessionGuid) \
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( (This)->lpVtbl -> Initialize(This,ShareMode,StreamFlags,hnsBufferDuration,hnsPeriodicity,pFormat,AudioSessionGuid) )
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#define IAudioClient3_GetBufferSize(This,pNumBufferFrames) \
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( (This)->lpVtbl -> GetBufferSize(This,pNumBufferFrames) )
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#define IAudioClient3_GetStreamLatency(This,phnsLatency) \
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( (This)->lpVtbl -> GetStreamLatency(This,phnsLatency) )
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#define IAudioClient3_GetCurrentPadding(This,pNumPaddingFrames) \
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( (This)->lpVtbl -> GetCurrentPadding(This,pNumPaddingFrames) )
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#define IAudioClient3_IsFormatSupported(This,ShareMode,pFormat,ppClosestMatch) \
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( (This)->lpVtbl -> IsFormatSupported(This,ShareMode,pFormat,ppClosestMatch) )
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#define IAudioClient3_GetMixFormat(This,ppDeviceFormat) \
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( (This)->lpVtbl -> GetMixFormat(This,ppDeviceFormat) )
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#define IAudioClient3_GetDevicePeriod(This,phnsDefaultDevicePeriod,phnsMinimumDevicePeriod) \
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( (This)->lpVtbl -> GetDevicePeriod(This,phnsDefaultDevicePeriod,phnsMinimumDevicePeriod) )
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#define IAudioClient3_Start(This) \
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( (This)->lpVtbl -> Start(This) )
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#define IAudioClient3_Stop(This) \
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( (This)->lpVtbl -> Stop(This) )
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#define IAudioClient3_Reset(This) \
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( (This)->lpVtbl -> Reset(This) )
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#define IAudioClient3_SetEventHandle(This,eventHandle) \
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( (This)->lpVtbl -> SetEventHandle(This,eventHandle) )
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#define IAudioClient3_GetService(This,riid,ppv) \
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( (This)->lpVtbl -> GetService(This,riid,ppv) )
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#define IAudioClient3_IsOffloadCapable(This,Category,pbOffloadCapable) \
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( (This)->lpVtbl -> IsOffloadCapable(This,Category,pbOffloadCapable) )
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#define IAudioClient3_SetClientProperties(This,pProperties) \
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( (This)->lpVtbl -> SetClientProperties(This,pProperties) )
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#define IAudioClient3_GetBufferSizeLimits(This,pFormat,bEventDriven,phnsMinBufferDuration,phnsMaxBufferDuration) \
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( (This)->lpVtbl -> GetBufferSizeLimits(This,pFormat,bEventDriven,phnsMinBufferDuration,phnsMaxBufferDuration) )
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#define IAudioClient3_GetSharedModeEnginePeriod(This,pFormat,pDefaultPeriodInFrames,pFundamentalPeriodInFrames,pMinPeriodInFrames,pMaxPeriodInFrames) \
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( (This)->lpVtbl -> GetSharedModeEnginePeriod(This,pFormat,pDefaultPeriodInFrames,pFundamentalPeriodInFrames,pMinPeriodInFrames,pMaxPeriodInFrames) )
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#define IAudioClient3_GetCurrentSharedModeEnginePeriod(This,ppFormat,pCurrentPeriodInFrames) \
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( (This)->lpVtbl -> GetCurrentSharedModeEnginePeriod(This,ppFormat,pCurrentPeriodInFrames) )
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#define IAudioClient3_InitializeSharedAudioStream(This,StreamFlags,PeriodInFrames,pFormat,AudioSessionGuid) \
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( (This)->lpVtbl -> InitializeSharedAudioStream(This,StreamFlags,PeriodInFrames,pFormat,AudioSessionGuid) )
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#endif /* __IAudioClient3_INTERFACE_DEFINED__ */
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