Sample Code
Windows Driver Samples/ Microsoft slate system virtual audio device driver sample/ C++/ SlateAudioSample/ minwavert.h/
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PCMiniportWaveRTStream * m_SystemStreams; PCMiniportWaveRTStream * m_OffloadStreams; PCMiniportWaveRTStream * m_LoopbackStreams; BOOL m_bGfxEnabled; PBOOL m_pbMuted; PLONG m_plVolumeLevel; PLONG m_plPeakMeter; PKSDATAFORMAT_WAVEFORMATEXTENSIBLE m_pMixFormat; PKSDATAFORMAT_WAVEFORMATEXTENSIBLE m_pDeviceFormat; PCFILTER_DESCRIPTOR m_FilterDesc; eDeviceType m_DeviceType; PADAPTERCOMMON m_pAdapterCommon; PIN_DEVICE_FORMATS_AND_MODES * m_DeviceFormatsAndModes; ULONG m_DeviceFormatsAndModesCount; USHORT m_DeviceMaxChannels; PDRMPORT m_pDrmPort; DRMRIGHTS m_MixDrmRights; ULONG m_ulMixDrmContentId; CONSTRICTOR_OPTION m_LoopbackProtection; union { PVOID m_DeviceContext; #ifdef SYSVAD_BTH_BYPASS PBTHHFPDEVICECOMMON m_BthHfpDevice; #endif // SYSVAD_BTH_BYPASS }; ULONG m_DeviceFlags; public : NTSTATUS ValidateStreamCreate ( _In_ ULONG _Pin, _In_ BOOLEAN _Capture ); NTSTATUS StreamCreated ( _In_ ULONG _Pin, _In_ PCMiniportWaveRTStream _Stream ); NTSTATUS StreamClosed ( _In_ ULONG _Pin, _In_ PCMiniportWaveRTStream _Stream ); NTSTATUS IsFormatSupported ( _In_ ULONG _ulPin, _In_ BOOLEAN _bCapture, _In_ PKSDATAFORMAT _pDataFormat ); static NTSTATUS GetAttributesFromAttributeList ( _In_ const KSMULTIPLE_ITEM *_pAttributes, _In_ size_t _Size, _Out_ GUID* _pSignalProcessingMode ); protected : NTSTATUS UpdateDrmRights ( void ); NTSTATUS SetLoopbackProtection ( _In_ CONSTRICTOR_OPTION ulProtectionOption ); public : DECLARE_STD_UNKNOWN(); CMiniportWaveRT( _In_ PUNKNOWN UnknownAdapter, _In_ PENDPOINT_MINIPAIR MiniportPair, _In_opt_ PVOID DeviceContext ) :CUnknown(0), m_ulMaxSystemStreams(0), m_ulMaxOffloadStreams(0), m_ulMaxLoopbackStreams(0), m_DeviceType(MiniportPair->DeviceType), m_DeviceContext(DeviceContext), m_DeviceMaxChannels(MiniportPair->DeviceMaxChannels), m_DeviceFormatsAndModes(MiniportPair->PinDeviceFormatsAndModes), m_DeviceFormatsAndModesCount(MiniportPair->PinDeviceFormatsAndModesCount), m_DeviceFlags(MiniportPair->DeviceFlags) { m_pAdapterCommon = (PADAPTERCOMMON)UnknownAdapter; // weak ref. if (MiniportPair->WaveDescriptor) { RtlCopyMemory(&m_FilterDesc, MiniportPair->WaveDescriptor, sizeof (m_FilterDesc)); // // Get the max # of pin instances. // if (IsRenderDevice()) { if (IsOffloadSupported()) { if (m_FilterDesc.PinCount > KSPIN_WAVE_RENDER_SOURCE) { m_ulMaxSystemStreams = m_FilterDesc.Pins[KSPIN_WAVE_RENDER_SINK_SYSTEM].MaxFilterInstanceCount; m_ulMaxOffloadStreams = m_FilterDesc.Pins[KSPIN_WAVE_RENDER_SINK_OFFLOAD].MaxFilterInstanceCount; m_ulMaxLoopbackStreams = m_FilterDesc.Pins[KSPIN_WAVE_RENDER_SINK_LOOPBACK].MaxFilterInstanceCount; } } else { if (m_FilterDesc.PinCount > KSPIN_WAVE_RENDER2_SOURCE) { m_ulMaxSystemStreams = m_FilterDesc.Pins[KSPIN_WAVE_RENDER2_SINK_SYSTEM].MaxFilterInstanceCount; m_ulMaxLoopbackStreams = m_FilterDesc.Pins[KSPIN_WAVE_RENDER2_SINK_LOOPBACK].MaxFilterInstanceCount; } } } } #ifdef SYSVAD_BTH_BYPASS if (IsBthHfpDevice()) { if (m_BthHfpDevice != NULL) { // This ref is released on dtor. m_BthHfpDevice->AddRef(); // strong ref. } } #endif // SYSVAD_BTH_BYPASS } ~CMiniportWaveRT(); IMP_IMiniportWaveRT; IMP_IMiniportAudioEngineNode; IMP_IMiniportAudioSignalProcessing; // Friends friend class CMiniportWaveRTStream; friend class CMiniportTopologySimple; friend NTSTATUS PropertyHandler_WaveFilter( _In_ PPCPROPERTY_REQUEST PropertyRequest ); public : NTSTATUS PropertyHandlerEffectListRequest ( _In_ PPCPROPERTY_REQUEST PropertyRequest ); NTSTATUS PropertyHandlerProposedFormat ( _In_ PPCPROPERTY_REQUEST PropertyRequest ); NTSTATUS PropertyHandlerProposedFormat2 ( _In_ PPCPROPERTY_REQUEST PropertyRequest ); PADAPTERCOMMON GetAdapterCommObj() { return m_pAdapterCommon; }; #ifdef SYSVAD_BTH_BYPASS NTSTATUS PropertyHandler_BthHfpAudioEffectsDiscoveryEffectsList ( _In_ PPCPROPERTY_REQUEST PropertyRequest ); #endif // SYSVAD_BTH_BYPASS //--------------------------------------------------------------------------------------------------------- // volume //--------------------------------------------------------------------------------------------------------- NTSTATUS GetVolumeChannelCount ( _Out_ UINT32 * pulChannelCount ); NTSTATUS GetVolumeSteppings ( _Out_writes_bytes_(_ui32DataSize) PKSPROPERTY_STEPPING_LONG _pKsPropStepLong, _In_ UINT32 _ui32DataSize ); NTSTATUS GetChannelVolume ( _In_ UINT32 _uiChannel, _Out_ LONG * _pVolume ); NTSTATUS SetChannelVolume ( _In_ UINT32 _uiChannel, _In_ LONG _Volume ); //----------------------------------------------------------------------------- // metering //----------------------------------------------------------------------------- NTSTATUS GetPeakMeterChannelCount ( _Out_ UINT32 * pulChannelCount ); NTSTATUS GetPeakMeterSteppings ( _Out_writes_bytes_(_ui32DataSize) PKSPROPERTY_STEPPING_LONG _pKsPropStepLong, _In_ UINT32 _ui32DataSize ); NTSTATUS GetChannelPeakMeter ( _In_ UINT32 _uiChannel, _Out_ LONG * _plPeakMeter ); //----------------------------------------------------------------------------- // mute //----------------------------------------------------------------------------- NTSTATUS GetMuteChannelCount ( _Out_ UINT32 * pulChannelCount ); NTSTATUS GetMuteSteppings ( _Out_writes_bytes_(_ui32DataSize) PKSPROPERTY_STEPPING_LONG _pKsPropStepLong, _In_ UINT32 _ui32DataSize ); NTSTATUS GetChannelMute ( _In_ UINT32 _uiChannel, _Out_ BOOL * _pbMute ); NTSTATUS SetChannelMute ( _In_ UINT32 _uiChannel, _In_ BOOL _bMute ); private : //----------------------------------------------------------------------------- // Supported formats index array: // // capture endpoint: // [0] Pin 1 - wave source. // // render endpoints: // [0] Audio-engine device formats. // [1] Pin 0 - Host // [2] Pin 1 - Offload // [3] Pin 2 - Loopback // KSDATAFORMAT_WAVEFORMATEXTENSIBLE * GetCapturePinSupportedDeviceFormats() { ASSERT(m_DeviceFormatsAndModesCount > CAPTURE_DEVICE_FORMATS); ASSERT(m_DeviceFormatsAndModes[CAPTURE_DEVICE_FORMATS].WaveFormats != NULL); ASSERT(GetCapturePinSupportedDeviceFormatsCount() > 0); return m_DeviceFormatsAndModes[CAPTURE_DEVICE_FORMATS].WaveFormats; } ULONG GetCapturePinSupportedDeviceFormatsCount() { ASSERT(m_DeviceFormatsAndModesCount > CAPTURE_DEVICE_FORMATS); return m_DeviceFormatsAndModes[CAPTURE_DEVICE_FORMATS].WaveFormatsCount; } KSDATAFORMAT_WAVEFORMATEXTENSIBLE * GetAudioEngineSupportedDeviceFormats() { ASSERT(m_DeviceFormatsAndModesCount > AUDIO_DEVICE_FORMATS); ASSERT(m_DeviceFormatsAndModes[AUDIO_DEVICE_FORMATS].WaveFormats != NULL); ASSERT(GetAudioEngineSupportedDeviceFormatsCount() > 0); return m_DeviceFormatsAndModes[AUDIO_DEVICE_FORMATS].WaveFormats; } ULONG GetAudioEngineSupportedDeviceFormatsCount() { ASSERT(m_DeviceFormatsAndModesCount > AUDIO_DEVICE_FORMATS); return m_DeviceFormatsAndModes[AUDIO_DEVICE_FORMATS].WaveFormatsCount; } KSDATAFORMAT_WAVEFORMATEXTENSIBLE * GetHostPinSupportedDeviceFormats() { ASSERT(m_DeviceFormatsAndModesCount > HOST_DEVICE_FORMATS); ASSERT(m_DeviceFormatsAndModes[HOST_DEVICE_FORMATS].WaveFormats != NULL); ASSERT(GetHostPinSupportedDeviceFormatsCount() > 0); return m_DeviceFormatsAndModes[HOST_DEVICE_FORMATS].WaveFormats; } ULONG GetHostPinSupportedDeviceFormatsCount() { ASSERT(m_DeviceFormatsAndModesCount > HOST_DEVICE_FORMATS); return m_DeviceFormatsAndModes[HOST_DEVICE_FORMATS].WaveFormatsCount; } KSDATAFORMAT_WAVEFORMATEXTENSIBLE * GetOffloadPinSupportedDeviceFormats() { ASSERT(m_DeviceFormatsAndModesCount > OFFLOAD_DEVICE_FORMATS); ASSERT(m_DeviceFormatsAndModes[OFFLOAD_DEVICE_FORMATS].WaveFormats != NULL); ASSERT(GetOffloadPinSupportedDeviceFormatsCount() > 0); return m_DeviceFormatsAndModes[OFFLOAD_DEVICE_FORMATS].WaveFormats; } ULONG GetOffloadPinSupportedDeviceFormatsCount() { ASSERT(m_DeviceFormatsAndModesCount > OFFLOAD_DEVICE_FORMATS); return m_DeviceFormatsAndModes[OFFLOAD_DEVICE_FORMATS].WaveFormatsCount; } KSDATAFORMAT_WAVEFORMATEXTENSIBLE * GetLoopbackPinSupportedDeviceFormats() { ASSERT(m_DeviceFormatsAndModesCount > LOOPBACK_DEVICE_FORMATS); ASSERT(m_DeviceFormatsAndModes[LOOPBACK_DEVICE_FORMATS].WaveFormats != NULL); ASSERT(GetLoopbackPinSupportedDeviceFormatsCount() > 0); return m_DeviceFormatsAndModes[LOOPBACK_DEVICE_FORMATS].WaveFormats; } ULONG GetLoopbackPinSupportedDeviceFormatsCount() { ASSERT(m_DeviceFormatsAndModesCount > LOOPBACK_DEVICE_FORMATS); return m_DeviceFormatsAndModes[LOOPBACK_DEVICE_FORMATS].WaveFormatsCount; } //----------------------------------------------------------------------------- // Supported modes index array: // // capture endpoint: // [0] Pin 1 - wave source. // // render endpoints: // [0] Audio-engine device formats - no support // [1] Pin 0 - Host // [2] Pin 1 - Offload // [3] Pin 2 - Loopback - no support // MODE_AND_DEFAULT_FORMAT * GetCapturePinSupportedDeviceModes() { ASSERT(m_DeviceFormatsAndModesCount > CAPTURE_DEVICE_FORMATS); ASSERT(GetCapturePinSupportedDeviceModesCount() > 0); #ifdef SYSVAD_BTH_BYPASS if (m_DeviceType == eBthHfpMicDevice) { ASSERT(m_BthHfpDevice != NULL); if (m_BthHfpDevice->IsNRECSupported()) { return BthHfpMicPinSupportedDeviceModesNrec; } else { return BthHfpMicPinSupportedDeviceModesNoNrec; } } #endif // SYSVAD_BTH_BYPASS ASSERT(m_DeviceFormatsAndModes[CAPTURE_DEVICE_FORMATS].ModeAndDefaultFormat != NULL); return m_DeviceFormatsAndModes[CAPTURE_DEVICE_FORMATS].ModeAndDefaultFormat; } ULONG GetCapturePinSupportedDeviceModesCount() { ASSERT(m_DeviceFormatsAndModesCount > CAPTURE_DEVICE_FORMATS); #ifdef SYSVAD_BTH_BYPASS if (m_DeviceType == eBthHfpMicDevice) { ASSERT(m_BthHfpDevice != NULL); if (m_BthHfpDevice->IsNRECSupported()) { return SIZEOF_ARRAY(BthHfpMicPinSupportedDeviceModesNrec); } else { return SIZEOF_ARRAY(BthHfpMicPinSupportedDeviceModesNoNrec); } } #endif // SYSVAD_BTH_BYPASS return m_DeviceFormatsAndModes[CAPTURE_DEVICE_FORMATS].ModeAndDefaultFormatCount; } MODE_AND_DEFAULT_FORMAT * GetHostPinSupportedDeviceModes() { ASSERT(m_DeviceFormatsAndModesCount > HOST_DEVICE_FORMATS); ASSERT(m_DeviceFormatsAndModes[HOST_DEVICE_FORMATS].ModeAndDefaultFormat != NULL); ASSERT(GetHostPinSupportedDeviceModesCount() > 0); return m_DeviceFormatsAndModes[HOST_DEVICE_FORMATS].ModeAndDefaultFormat; } ULONG GetHostPinSupportedDeviceModesCount() { ASSERT(m_DeviceFormatsAndModesCount > HOST_DEVICE_FORMATS); return m_DeviceFormatsAndModes[HOST_DEVICE_FORMATS].ModeAndDefaultFormatCount; } MODE_AND_DEFAULT_FORMAT * GetOffloadPinSupportedDeviceModes() { ASSERT(m_DeviceFormatsAndModesCount > OFFLOAD_DEVICE_FORMATS); ASSERT(m_DeviceFormatsAndModes[OFFLOAD_DEVICE_FORMATS].ModeAndDefaultFormat != NULL); ASSERT(GetOffloadPinSupportedDeviceModesCount() > 0); return m_DeviceFormatsAndModes[OFFLOAD_DEVICE_FORMATS].ModeAndDefaultFormat; } ULONG GetOffloadPinSupportedDeviceModesCount() { ASSERT(m_DeviceFormatsAndModesCount > OFFLOAD_DEVICE_FORMATS); return m_DeviceFormatsAndModes[OFFLOAD_DEVICE_FORMATS].ModeAndDefaultFormatCount; } BOOL IsRenderDevice() { return (m_DeviceType == eSpeakerDevice || m_DeviceType == eSpeakerHpDevice || m_DeviceType == eHdmiDevice || m_DeviceType == eBthHfpSpeakerDevice) ? TRUE : FALSE; } BOOL IsOffloadSupported() { return (m_DeviceFlags & ENDPOINT_OFFLOAD_SUPPORTED) ? TRUE : FALSE; } ULONG GetSystemPinId() { ASSERT(IsRenderDevice()); return IsOffloadSupported() ? KSPIN_WAVE_RENDER_SINK_SYSTEM : KSPIN_WAVE_RENDER2_SINK_SYSTEM; } ULONG GetLoopbackPinId() { ASSERT(IsRenderDevice()); return IsOffloadSupported() ? KSPIN_WAVE_RENDER_SINK_LOOPBACK : KSPIN_WAVE_RENDER2_SINK_LOOPBACK; } ULONG GetOffloadPinId() { ASSERT(IsRenderDevice()); ASSERT(IsOffloadSupported()); return KSPIN_WAVE_RENDER_SINK_OFFLOAD; } ULONG GetSourcePinId() { ASSERT(IsRenderDevice()); return IsOffloadSupported() ? KSPIN_WAVE_RENDER_SOURCE : KSPIN_WAVE_RENDER2_SOURCE; } #ifdef SYSVAD_BTH_BYPASS public : BOOL IsBthHfpDevice() { return (m_DeviceType == eBthHfpMicDevice || m_DeviceType == eBthHfpSpeakerDevice) ? TRUE : FALSE; } // Returns a weak ref to the Bluetooth HFP device. PBTHHFPDEVICECOMMON GetBthHfpDevice() { PBTHHFPDEVICECOMMON bthHfpDevice = NULL; if (IsBthHfpDevice()) { if (m_BthHfpDevice != NULL) { bthHfpDevice = m_BthHfpDevice; } } return bthHfpDevice; } #endif // SYSVAD_BTH_BYPASS }; typedef CMiniportWaveRT *PCMiniportWaveRT; #endif // _SYSVAD_MINWAVERT_H_ |
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