//------------------------------------------------------------------------------
// File: MMStream.idl
//
// Desc: MultiMedia streaming interface IDL file.  Used by MIDL tool
//       to generate mmstream.h.
//
// Copyright (c) 1998-2002, Microsoft Corporation.  All rights reserved.
//------------------------------------------------------------------------------


import "unknwn.idl";

cpp_quote("#define MS_ERROR_CODE(x) MAKE_HRESULT(1, FACILITY_ITF, (x) + 0x400)")
cpp_quote("#define MS_SUCCESS_CODE(x) MAKE_HRESULT(0, FACILITY_ITF, x)")
cpp_quote("#define MS_S_PENDING                  MS_SUCCESS_CODE(1)")
cpp_quote("#define MS_S_NOUPDATE                 MS_SUCCESS_CODE(2)")
cpp_quote("#define MS_S_ENDOFSTREAM              MS_SUCCESS_CODE(3)")

cpp_quote("#define MS_E_SAMPLEALLOC              MS_ERROR_CODE(1)")
cpp_quote("#define MS_E_PURPOSEID                MS_ERROR_CODE(2)")
cpp_quote("#define MS_E_NOSTREAM                 MS_ERROR_CODE(3)")
cpp_quote("#define MS_E_NOSEEKING                MS_ERROR_CODE(4)")
cpp_quote("#define MS_E_INCOMPATIBLE             MS_ERROR_CODE(5)")
cpp_quote("#define MS_E_BUSY                     MS_ERROR_CODE(6)")
cpp_quote("#define MS_E_NOTINIT                  MS_ERROR_CODE(7)")
cpp_quote("#define MS_E_SOURCEALREADYDEFINED     MS_ERROR_CODE(8)")
cpp_quote("#define MS_E_INVALIDSTREAMTYPE        MS_ERROR_CODE(9)")
cpp_quote("#define MS_E_NOTRUNNING               MS_ERROR_CODE(10)")

cpp_quote("// {A35FF56A-9FDA-11d0-8FDF-00C04FD9189D}")
cpp_quote("DEFINE_GUID(MSPID_PrimaryVideo, ")
cpp_quote("0xa35ff56a, 0x9fda, 0x11d0, 0x8f, 0xdf, 0x0, 0xc0, 0x4f, 0xd9, 0x18, 0x9d);")

cpp_quote("// {A35FF56B-9FDA-11d0-8FDF-00C04FD9189D}")
cpp_quote("DEFINE_GUID(MSPID_PrimaryAudio,")
cpp_quote("0xa35ff56b, 0x9fda, 0x11d0, 0x8f, 0xdf, 0x0, 0xc0, 0x4f, 0xd9, 0x18, 0x9d);")

cpp_quote("#if(_WIN32_WINNT < 0x0400)")
typedef void (__stdcall * PAPCFUNC)(DWORD_PTR dwParam);
cpp_quote("#endif")

typedef LONGLONG STREAM_TIME;

typedef GUID MSPID;
typedef REFGUID REFMSPID;

typedef enum {
    STREAMTYPE_READ         = 0,
    STREAMTYPE_WRITE        = 1,
    STREAMTYPE_TRANSFORM= 2
} STREAM_TYPE;

typedef enum {
    STREAMSTATE_STOP        = 0,
    STREAMSTATE_RUN         = 1
} STREAM_STATE;


typedef enum {
    COMPSTAT_NOUPDATEOK     = 0x00000001,
    COMPSTAT_WAIT           = 0x00000002,
    COMPSTAT_ABORT          = 0x00000004
} COMPLETION_STATUS_FLAGS;

//  Flags for GetInformation
enum {
    MMSSF_HASCLOCK          = 0x00000001,
    MMSSF_SUPPORTSEEK       = 0x00000002,
    MMSSF_ASYNCHRONOUS      = 0x00000004
};

//  Flags for StreamSample::Update
enum {
        SSUPDATE_ASYNC      = 0x00000001,
        SSUPDATE_CONTINUOUS = 0x00000002
};

interface IMultiMediaStream;
interface IMediaStream;
interface IStreamSample;

// IMultiMediaStream interface
[
object,
local,
uuid(B502D1BC-9A57-11d0-8FDE-00C04FD9189D),
pointer_default(unique)
]
interface IMultiMediaStream : IUnknown {

    HRESULT GetInformation(
        [out]  DWORD *pdwFlags,
        [out]  STREAM_TYPE *pStreamType);

    HRESULT GetMediaStream(
        [in] REFMSPID idPurpose,
        [out] IMediaStream **ppMediaStream);

    HRESULT EnumMediaStreams(
        [in] long Index,
        [out] IMediaStream **ppMediaStream);

    HRESULT GetState(
        [out] STREAM_STATE *pCurrentState);

    HRESULT SetState(
        [in] STREAM_STATE NewState);

    HRESULT GetTime(
        [out] STREAM_TIME *pCurrentTime);

    HRESULT GetDuration(
        [out] STREAM_TIME *pDuration);

    HRESULT Seek(
        [in] STREAM_TIME SeekTime);

    HRESULT GetEndOfStreamEventHandle(
        [out] HANDLE *phEOS);
};


// IMediaStream interface
[
object,
uuid(B502D1BD-9A57-11d0-8FDE-00C04FD9189D),
pointer_default(unique)
]
interface IMediaStream : IUnknown {
    
    HRESULT GetMultiMediaStream(
        [out] IMultiMediaStream **ppMultiMediaStream);

    HRESULT GetInformation(
        [out]  MSPID *pPurposeId,
        [out]  STREAM_TYPE *pType);

    HRESULT SetSameFormat(
        [in] IMediaStream *pStreamThatHasDesiredFormat,
        [in] DWORD dwFlags);

    HRESULT AllocateSample(
        [in]  DWORD dwFlags,
        [out] IStreamSample **ppSample);
    

    HRESULT CreateSharedSample(
        [in]  IStreamSample *pExistingSample,
        [in]  DWORD dwFlags,
        [out] IStreamSample **ppNewSample);

    HRESULT SendEndOfStream(DWORD dwFlags);
};


// IStreamSample interface
[
object,
local,
uuid(B502D1BE-9A57-11d0-8FDE-00C04FD9189D),
pointer_default(unique)
]
interface IStreamSample : IUnknown {
    
    HRESULT GetMediaStream(
        [in] IMediaStream **ppMediaStream);

    HRESULT GetSampleTimes(
        [out]  STREAM_TIME * pStartTime,
        [out]  STREAM_TIME * pEndTime,
        [out]  STREAM_TIME * pCurrentTime);

    HRESULT SetSampleTimes(
        [in]  const STREAM_TIME *pStartTime,
        [in]  const STREAM_TIME *pEndTime);

    HRESULT Update(
        [in]            DWORD dwFlags,
        [in]  HANDLE hEvent,
        [in]  PAPCFUNC pfnAPC,
        [in]  DWORD_PTR dwAPCData);

    HRESULT CompletionStatus(
        [in] DWORD dwFlags,
        [in] DWORD dwMilliseconds);
};