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412 lines
12 KiB
Plaintext
412 lines
12 KiB
Plaintext
//------------------------------------------------------------------------------
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// File: MediaObj.idl
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//
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// Desc: Define the interfaces for DirectX Media Objects. This file will be
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// processed by the MIDL tool to produce mediaobj.h and proxy-stub code.
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//
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// Copyright (c) 1999 - 2002, Microsoft Corporation. All rights reserved.
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//------------------------------------------------------------------------------
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import "unknwn.idl";
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import "objidl.idl";
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// DMO_MEDIA_TYPE structure
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cpp_quote("#ifdef __strmif_h__")
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cpp_quote("typedef AM_MEDIA_TYPE DMO_MEDIA_TYPE;")
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cpp_quote("#else")
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typedef struct _DMOMediaType {
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GUID majortype;
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GUID subtype;
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BOOL bFixedSizeSamples;
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BOOL bTemporalCompression;
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ULONG lSampleSize;
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GUID formattype;
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IUnknown *pUnk;
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ULONG cbFormat;
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[size_is(cbFormat)] BYTE * pbFormat;
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} DMO_MEDIA_TYPE;
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typedef LONGLONG REFERENCE_TIME;
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cpp_quote("#endif")
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// Per-buffer flags that apply to input buffers
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enum _DMO_INPUT_DATA_BUFFER_FLAGS {
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DMO_INPUT_DATA_BUFFERF_SYNCPOINT = 0x00000001,
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DMO_INPUT_DATA_BUFFERF_TIME = 0x00000002,
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DMO_INPUT_DATA_BUFFERF_TIMELENGTH = 0x00000004
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};
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// Per-buffer flags that apply to output buffers.
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enum _DMO_OUTPUT_DATA_BUFFER_FLAGS {
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DMO_OUTPUT_DATA_BUFFERF_SYNCPOINT = 0x00000001,
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DMO_OUTPUT_DATA_BUFFERF_TIME = 0x00000002,
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DMO_OUTPUT_DATA_BUFFERF_TIMELENGTH = 0x00000004,
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//
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// This flag means the object could have generated more data for this
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// output stream, even with no additional input from any input stream,
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// but the output buffer did not have sufficient room.
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//
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DMO_OUTPUT_DATA_BUFFERF_INCOMPLETE = 0x01000000
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};
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// Flags returned by GetInputStatus()
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enum _DMO_INPUT_STATUS_FLAGS {
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//
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// ACCEPT_DATA indicates that the input stream is ready to accept
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// new data via ProcessInput().
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//
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DMO_INPUT_STATUSF_ACCEPT_DATA = 0x00000001
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};
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// Flags returned by GetInputStreamInfo()
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enum _DMO_INPUT_STREAM_INFO_FLAGS {
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DMO_INPUT_STREAMF_WHOLE_SAMPLES = 0x00000001,
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DMO_INPUT_STREAMF_SINGLE_SAMPLE_PER_BUFFER = 0x00000002,
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DMO_INPUT_STREAMF_FIXED_SAMPLE_SIZE = 0x00000004,
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DMO_INPUT_STREAMF_HOLDS_BUFFERS = 0x00000008
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};
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// Flags returned by GetOutputStreamInfo()
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enum _DMO_OUTPUT_STREAM_INFO_FLAGS {
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DMO_OUTPUT_STREAMF_WHOLE_SAMPLES = 0x00000001,
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DMO_OUTPUT_STREAMF_SINGLE_SAMPLE_PER_BUFFER = 0x00000002,
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DMO_OUTPUT_STREAMF_FIXED_SAMPLE_SIZE = 0x00000004,
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DMO_OUTPUT_STREAMF_DISCARDABLE = 0x00000008,
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DMO_OUTPUT_STREAMF_OPTIONAL = 0x00000010
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};
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// SetType flags
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enum _DMO_SET_TYPE_FLAGS {
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DMO_SET_TYPEF_TEST_ONLY = 0x00000001,// check but don't set
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DMO_SET_TYPEF_CLEAR = 0x00000002 // unset
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};
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// Process Output Flags
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enum _DMO_PROCESS_OUTPUT_FLAGS {
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DMO_PROCESS_OUTPUT_DISCARD_WHEN_NO_BUFFER = 0x00000001 // Discard
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};
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// Buffer wrapper interface
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[
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object,
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uuid(59eff8b9-938c-4a26-82f2-95cb84cdc837)
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]
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interface IMediaBuffer : IUnknown
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{
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HRESULT SetLength(
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DWORD cbLength
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);
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HRESULT GetMaxLength(
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[out] DWORD *pcbMaxLength
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);
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HRESULT GetBufferAndLength(
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[out] BYTE **ppBuffer, // not filled if NULL
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[out] DWORD *pcbLength // not filled if NULL
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);
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}
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//
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// Output buffer info structure: one of these must be passed in for each
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// output stream with every ProcessOutput() call
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// All [out] fields should be
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// assumed undefined if ProcessOutput() failed
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//
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typedef struct _DMO_OUTPUT_DATA_BUFFER {
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IMediaBuffer *pBuffer; // [in] can be NULL
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// ProcessOutput() must set any appropriate flags and zero out the rest.
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DWORD dwStatus; // [out] DMO_OUTPUT_DATA_BUFFERF_XXX (INCOMPLETE, etc.)
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//
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// Each of these is valid if the corresponding flag is set in dwStatus
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//
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REFERENCE_TIME rtTimestamp; // [out]
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REFERENCE_TIME rtTimelength; // [out]
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} DMO_OUTPUT_DATA_BUFFER, *PDMO_OUTPUT_DATA_BUFFER;
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// Interface supported by media objects
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[
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object,
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uuid(d8ad0f58-5494-4102-97c5-ec798e59bcf4)
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]
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interface IMediaObject : IUnknown
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{
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//
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// Stream enumeration
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//
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HRESULT GetStreamCount(
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[out] DWORD *pcInputStreams,
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[out] DWORD *pcOutputStreams
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);
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HRESULT GetInputStreamInfo(
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DWORD dwInputStreamIndex, // 0-based
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[out] DWORD *pdwFlags // HOLDS_BUFFERS
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);
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HRESULT GetOutputStreamInfo(
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DWORD dwOutputStreamIndex, // 0-based
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[out] DWORD *pdwFlags // Media object sets to 0
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);
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//
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// Mediatypes
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//
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//
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// GetType - iterate through media types supported by a stream.
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// Returns S_FALSE if the type index is out of range ("no more types").
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//
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HRESULT GetInputType(
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DWORD dwInputStreamIndex,
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DWORD dwTypeIndex, // 0-based
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[out] DMO_MEDIA_TYPE *pmt
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);
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HRESULT GetOutputType(
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DWORD dwOutputStreamIndex,
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DWORD dwTypeIndex, // 0-based
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[out] DMO_MEDIA_TYPE *pmt
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);
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//
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// SetType - tell the object the type of data it will work with.
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//
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HRESULT SetInputType(
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DWORD dwInputStreamIndex,
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[in] const DMO_MEDIA_TYPE *pmt,
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DWORD dwFlags // test only
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);
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HRESULT SetOutputType(
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DWORD dwOutputStreamIndex,
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[in] const DMO_MEDIA_TYPE *pmt,
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DWORD dwFlags // test only
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);
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//
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// GetCurrentType - get the last mediatype supplied via SetType.
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// Returns S_FALSE if SetType has not been called.
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//
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HRESULT GetInputCurrentType(
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DWORD dwInputStreamIndex,
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[out] DMO_MEDIA_TYPE *pmt
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);
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HRESULT GetOutputCurrentType(
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DWORD dwOutputStreamIndex,
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[out] DMO_MEDIA_TYPE *pmt
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);
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//
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// SizeInfo
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//
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//
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// GetSizeInfo - Get buffer size requirementes of a stream.
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//
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// If buffer size depends on the media type used, the object should
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// base its response on the most recent media type set for this stream.
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// If no mediatype has been set, the object may return an error.
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//
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HRESULT GetInputSizeInfo(
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DWORD dwInputStreamIndex,
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[out] DWORD *pcbSize, // size of input 'quantum'
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[out] DWORD *pcbMaxLookahead, // max total bytes held
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[out] DWORD *pcbAlignment // buffer alignment requirement
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);
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HRESULT GetOutputSizeInfo(
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DWORD dwOutputStreamIndex,
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[out] DWORD *pcbSize, // size of output 'quantum'
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[out] DWORD *pcbAlignment // buffer alignment requirement
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);
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//
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// Latency methods
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//
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HRESULT GetInputMaxLatency(
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DWORD dwInputStreamIndex,
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[out] REFERENCE_TIME *prtMaxLatency
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);
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HRESULT SetInputMaxLatency(
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DWORD dwInputStreamIndex,
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REFERENCE_TIME rtMaxLatency
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);
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//
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// Streaming / state methods
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//
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//
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// Flush() - discard any buffered data.
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//
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HRESULT Flush();
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//
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// Send a discontinuity to an input stream. The object will not
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// accept any more data on this input stream until the discontinuity
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// has been completely processed, which may involve multiple
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// ProcessOutput() calls.
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//
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HRESULT Discontinuity(DWORD dwInputStreamIndex);
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//
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// If a streaming object needs to perform any time consuming
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// initialization before it can stream data, it should do it inside
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// AllocateStreamingResources() rather than during the first process
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// call.
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//
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// This method is NOT guaranteed to be called before streaming
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// starts. If it is not called, the object should perform any
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// required initialization during a process call.
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//
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HRESULT AllocateStreamingResources();
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// Free anything allocated in AllocateStreamingResources().
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HRESULT FreeStreamingResources();
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// GetInputStatus - the only flag defined right now is ACCEPT_DATA.
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HRESULT GetInputStatus(
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DWORD dwInputStreamIndex,
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[out] DWORD *dwFlags // ACCEPT_DATA
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);
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//
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// Pass one new buffer to an input stream
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//
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HRESULT ProcessInput(
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DWORD dwInputStreamIndex,
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IMediaBuffer *pBuffer, // must not be NULL
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DWORD dwFlags, // DMO_INPUT_DATA_BUFFERF_XXX (syncpoint, etc.)
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REFERENCE_TIME rtTimestamp, // valid if flag set
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REFERENCE_TIME rtTimelength // valid if flag set
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);
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//
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// ProcessOutput() - generate output for current input buffers
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//
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// Output stream specific status information is returned in the
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// dwStatus member of each buffer wrapper structure.
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//
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HRESULT ProcessOutput(
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DWORD dwFlags, // DMO_PROCESS_OUTPUT_FLAGS
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DWORD cOutputBufferCount, // # returned by GetStreamCount()
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[in,out,size_is(cOutputBufferCount)]
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DMO_OUTPUT_DATA_BUFFER *pOutputBuffers, // one per stream
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[out] DWORD *pdwStatus // TBD, must be set to 0
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);
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// Locking - lock if bLock is TRUE, otherwise unlock
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HRESULT Lock(LONG bLock);
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};
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//
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// Interface returned by the DMO enumeration API
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//
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[
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object,
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uuid(2c3cd98a-2bfa-4a53-9c27-5249ba64ba0f)
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]
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interface IEnumDMO : IUnknown {
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HRESULT Next(
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DWORD cItemsToFetch,
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[out, size_is(cItemsToFetch), length_is(*pcItemsFetched)] CLSID *pCLSID,
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[out, size_is(cItemsToFetch), length_is(*pcItemsFetched), string] WCHAR **Names,
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[out] DWORD *pcItemsFetched
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);
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HRESULT Skip(
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DWORD cItemsToSkip
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);
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HRESULT Reset(void);
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HRESULT Clone(
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[out] IEnumDMO **ppEnum
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);
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}
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// Flags for IMediaObjectInPlace::Process
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enum _DMO_INPLACE_PROCESS_FLAGS {
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DMO_INPLACE_NORMAL = 0x00000000,
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DMO_INPLACE_ZERO = 0x00000001
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};
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[
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object,
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uuid(651b9ad0-0fc7-4aa9-9538-d89931010741)
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]
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interface IMediaObjectInPlace : IUnknown {
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// Proces - Given a buffer of size ulSize, put the output
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// of the DMO into the same buffer.
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HRESULT Process(
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[in] ULONG ulSize,
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[in,out,size_is(ulSize)] BYTE* pData,
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[in] REFERENCE_TIME refTimeStart,
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[in] DWORD dwFlags
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);
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// Create a copy of the In-Place Media Object. This allows
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// for very fast initialization of a number of In-Place objects
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// in a known state.
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HRESULT Clone(
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[out] IMediaObjectInPlace **ppMediaObject
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);
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// GetLatency - Returns a REFERENCE_TIME value
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// (1 tick = 100ns) which corresponds to the latency time
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// processing this effect will add to the graph. This assumes
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// the effect cost per buffer is a constant.
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HRESULT GetLatency(
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[out] REFERENCE_TIME *pLatencyTime
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);
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}
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// Quality control status flags
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enum _DMO_QUALITY_STATUS_FLAGS {
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DMO_QUALITY_STATUS_ENABLED = 0x00000001
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};
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[
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object,
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uuid(65abea96-cf36-453f-af8a-705e98f16260)
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]
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interface IDMOQualityControl : IUnknown {
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HRESULT SetNow(
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[in] REFERENCE_TIME rtNow
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);
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HRESULT SetStatus(
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[in] DWORD dwFlags
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);
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HRESULT GetStatus(
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[out] DWORD *pdwFlags
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);
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}
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// Flags for IVideoOutputOptimizations
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enum _DMO_VIDEO_OUTPUT_STREAM_FLAGS {
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DMO_VOSF_NEEDS_PREVIOUS_SAMPLE = 0x00000001
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};
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[
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object,
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uuid(be8f4f4e-5b16-4d29-b350-7f6b5d9298ac)
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]
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interface IDMOVideoOutputOptimizations : IUnknown {
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HRESULT QueryOperationModePreferences (
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ULONG ulOutputStreamIndex,
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DWORD *pdwRequestedCapabilities
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);
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HRESULT SetOperationMode (
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ULONG ulOutputStreamIndex,
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DWORD dwEnabledFeatures
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);
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HRESULT GetCurrentOperationMode (
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ULONG ulOutputStreamIndex,
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DWORD *pdwEnabledFeatures
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);
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HRESULT GetCurrentSampleRequirements (
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ULONG ulOutputStreamIndex,
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DWORD *pdwRequestedFeatures
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);
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}
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