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//------------------------------------------------------------------------------
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// File: VideoAcc.idl
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//
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// Desc: An interface exposed by the overlay mixer to help decode samples
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// using hardware video acceleration.
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//
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// Copyright (c) 1992 - 2000, Microsoft Corporation. All rights reserved.
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//------------------------------------------------------------------------------
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import "unknwn.idl";
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cpp_quote("//")
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cpp_quote("// The following declarations within the 'if 0' block are dummy typedefs used to make")
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cpp_quote("// the motncomp.idl file build. The actual definitions are contained in ddraw.h and amva.h")
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cpp_quote("//")
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cpp_quote("#if 0")
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typedef void* LPVOID;
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typedef void* LPGUID;
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typedef void* LPDIRECTDRAWSURFACE;
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typedef void* LPDDPIXELFORMAT;
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typedef void* LPAMVAInternalMemInfo;
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typedef void AMVAUncompDataInfo;
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typedef void* LPAMVACompBufferInfo;
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typedef void AMVABUFFERINFO;
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typedef void AMVAEndFrameInfo;
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typedef void* LPAMVAUncompBufferInfo;
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typedef void AMVABeginFrameInfo;
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typedef IUnknown* IMediaSample;
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cpp_quote("#endif")
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cpp_quote("#include <ddraw.h>")
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cpp_quote("#include <amva.h>")
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[
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local,
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object,
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uuid(256A6A21-FBAD-11d1-82BF-00A0C9696C8F),
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helpstring("IAMVideoAcceleratorNotify Interface"),
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pointer_default(unique)
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]
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// IAMVideoAcceleratorNotify
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interface IAMVideoAcceleratorNotify : IUnknown
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{
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// get information necessary to allocate uncompressed data buffers
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// which is not part of the mediatype format (like how many buffers to allocate etc)
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HRESULT GetUncompSurfacesInfo([in] const GUID *pGuid, [in] [out] LPAMVAUncompBufferInfo pUncompBufferInfo);
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// set information regarding allocated uncompressed data buffers
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HRESULT SetUncompSurfacesInfo([in] DWORD dwActualUncompSurfacesAllocated);
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// get information necessary to create video accelerator object. It is the caller's responsibility
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// to call CoTaskMemFree() on *ppMiscData
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HRESULT GetCreateVideoAcceleratorData([in] const GUID *pGuid, [out] LPDWORD pdwSizeMiscData, [out] LPVOID *ppMiscData);
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};
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[
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local,
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object,
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uuid(256A6A22-FBAD-11d1-82BF-00A0C9696C8F),
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helpstring("IAMVideoAccelerator Interface"),
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pointer_default(unique)
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]
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// IAMVideoAccelerator
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interface IAMVideoAccelerator : IUnknown
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{
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// pdwNumGuidsSupported is an IN OUT paramter
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// pGuidsSupported is an IN OUT paramter
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// if pGuidsSupported is NULL, pdwNumGuidsSupported should return back with the
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// number of uncompressed pixel formats supported
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// Otherwise pGuidsSupported is an array of *pdwNumGuidsSupported structures
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HRESULT GetVideoAcceleratorGUIDs([in] [out] LPDWORD pdwNumGuidsSupported, [in] [out] LPGUID pGuidsSupported);
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// pGuid is an IN parameter
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// pdwNumFormatsSupported is an IN OUT paramter
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// pFormatsSupported is an IN OUT paramter (caller should make sure to set the size of EACH struct)
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// if pFormatsSupported is NULL, pdwNumFormatsSupported should return back with
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// the number of uncompressed pixel formats supported
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// Otherwise pFormatsSupported is an array of *pdwNumFormatsSupported structures
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HRESULT GetUncompFormatsSupported( [in] const GUID *pGuid, [in] [out] LPDWORD pdwNumFormatsSupported,
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[in] [out] LPDDPIXELFORMAT pFormatsSupported);
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// pGuid is an IN parameter
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// pamvaUncompDataInfo is an IN parameter
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// pamvaInternalMemInfo is an IN OUT parameter (caller should make sure to set the size of struct)
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// currently only gets info about how much scratch memory will the hal allocate for its private use
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HRESULT GetInternalMemInfo([in] const GUID *pGuid, [in] const AMVAUncompDataInfo *pamvaUncompDataInfo,
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[in] [out] LPAMVAInternalMemInfo pamvaInternalMemInfo);
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// pGuid is an IN parameter
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// pamvaUncompDataInfo is an IN parameter
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// pdwNumTypesCompBuffers is an IN OUT paramter
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// pamvaCompBufferInfo is an IN OUT paramter (caller should make sure to set the size of EACH struct)
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// if pamvaCompBufferInfo is NULL, pdwNumTypesCompBuffers should return back with the number of types of
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// compressed buffers
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// Otherwise pamvaCompBufferInfo is an array of *pdwNumTypesCompBuffers structures
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HRESULT GetCompBufferInfo([in] const GUID *pGuid, [in] const AMVAUncompDataInfo *pamvaUncompDataInfo,
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[in] [out] LPDWORD pdwNumTypesCompBuffers, [out] LPAMVACompBufferInfo pamvaCompBufferInfo);
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// pdwNumTypesCompBuffers is an IN OUT paramter
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// pamvaCompBufferInfo is an IN OUT paramter (caller should make sure to set the size of EACH struct)
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// if pamvaCompBufferInfo is NULL, pdwNumTypesCompBuffers should return back with the number of types of
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// compressed buffers
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// Otherwise pamvaCompBufferInfo is an array of *pdwNumTypesCompBuffers structures
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// only valid to call this after the pins are connected
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HRESULT GetInternalCompBufferInfo([in] [out] LPDWORD pdwNumTypesCompBuffers, [out] LPAMVACompBufferInfo pamvaCompBufferInfo);
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// begin a frame, the pMiscData is passed directly to the hal
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// only valid to call this after the pins are connected
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// Tells the ovmixer which frame is the destination
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// frame. Use indices (valid vales are [0 .. pdwNumSurfacesAllocated-1]) to specify frames
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HRESULT BeginFrame([in] const AMVABeginFrameInfo *amvaBeginFrameInfo);
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// end a frame, the pMiscData is passed directly to the hal
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// only valid to call this after the pins are connected
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HRESULT EndFrame([in] const AMVAEndFrameInfo *pEndFrameInfo);
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// lock and obtain access to a single buffer
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// only valid to call this after the pins are connected
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// Buffers are identified by type and index within that type
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// Specifiying read-only will allow access to busy reference
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// frames
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// Output (uncompressed) frames use a type index of 0xFFFFFFFF
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HRESULT GetBuffer(
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[in] DWORD dwTypeIndex,
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[in] DWORD dwBufferIndex,
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[in] BOOL bReadOnly,
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[out] LPVOID *ppBuffer,
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[out] LONG *lpStride);
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// unlock a single buffer
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// Buffers are identified by type and index within that type
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// only valid to call this after the pins are connected
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HRESULT ReleaseBuffer([in] DWORD dwTypeIndex, [in] DWORD dwBufferIndex);
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// Perform a decompression operation
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// Private data can be passed to and from a driver
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// identifiers for the corresponding members of pamvaMacroBlockInfo
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// pamvaMacroBlockInfo is an IN parameter which is array (of length dwNumBlocks) of structures
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// only valid to call this after the pins are connected
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HRESULT Execute(
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[in] DWORD dwFunction,
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[in] LPVOID lpPrivateInputData,
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[in] DWORD cbPrivateInputData,
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[in] LPVOID lpPrivateOutputDat,
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[in] DWORD cbPrivateOutputData,
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[in] DWORD dwNumBuffers,
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[in] const AMVABUFFERINFO *pamvaBufferInfo);
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// query the decode status of a particular decompression operation
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// dwTypeIndex and dwBufferIndex define the buffer whose status is
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// being queried
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HRESULT QueryRenderStatus([in] DWORD dwTypeIndex,
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[in] DWORD dwBufferIndex,
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[in] DWORD dwFlags);
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// display a frame. The mediasample contains the timestamps etc for the frame to be displayed
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// this call is a non-blocking call
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// only valid to call this after the pins are connected
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HRESULT DisplayFrame([in] DWORD dwFlipToIndex, [in] IMediaSample *pMediaSample);
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};
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