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BSEtunes

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24 Apr 2010CPOL4 min read 64.4K   4.3K   58  
BSEtunes is a MySQL based, full manageable, networkable single or multiuser jukebox application
//Widows Media Format Interfaces
//
//  THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
//  KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
//  IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
//  PURPOSE. IT CAN BE DISTRIBUTED FREE OF CHARGE AS LONG AS THIS HEADER 
//  REMAINS UNCHANGED.
//
//  Email:  yetiicb@hotmail.com
//
//  Copyright (C) 2002-2004 Idael Cardoso. 
//
using System;
using System.Text;
using System.Runtime.InteropServices;

namespace BSE.Platten.Audio.WMFSDK
{

    public enum WMT_STREAM_SELECTION
    {
        WMT_OFF = 0,
        WMT_CLEANPOINT_ONLY = 1,
        WMT_ON = 2,
    };


    public enum WMT_ATTR_DATATYPE
    {
        WMT_TYPE_DWORD = 0,

        WMT_TYPE_STRING = 1,

        WMT_TYPE_BINARY = 2,

        WMT_TYPE_BOOL = 3,

        WMT_TYPE_QWORD = 4,

        WMT_TYPE_WORD = 5,

        WMT_TYPE_GUID = 6,
    };


    public enum WMT_VERSION
    {

        WMT_VER_4_0 = 0x00040000,

        WMT_VER_7_0 = 0x00070000,

        WMT_VER_8_0 = 0x00080000,

        WMT_VER_9_0 = 0x00090000,
    };


    public enum WMT_STORAGE_FORMAT
    {

        WMT_Storage_Format_MP3,

        WMT_Storage_Format_V1
    };


    public enum WMT_TRANSPORT_TYPE
    {

        WMT_Transport_Type_Unreliable,

        WMT_Transport_Type_Reliable
    };


    public enum WMT_STATUS
    {

        WMT_ERROR = 0,

        WMT_OPENED = 1,

        WMT_BUFFERING_START = 2,

        WMT_BUFFERING_STOP = 3,

        WMT_EOF = 4,

        WMT_END_OF_FILE = 4,

        WMT_END_OF_SEGMENT = 5,

        WMT_END_OF_STREAMING = 6,

        WMT_LOCATING = 7,

        WMT_CONNECTING = 8,

        WMT_NO_RIGHTS = 9,

        WMT_MISSING_CODEC = 10,

        WMT_STARTED = 11,

        WMT_STOPPED = 12,

        WMT_CLOSED = 13,

        WMT_STRIDING = 14,

        WMT_TIMER = 15,

        WMT_INDEX_PROGRESS = 16,

        WMT_SAVEAS_START = 17,

        WMT_SAVEAS_STOP = 18,

        WMT_NEW_SOURCEFLAGS = 19,

        WMT_NEW_METADATA = 20,

        WMT_BACKUPRESTORE_BEGIN = 21,

        WMT_SOURCE_SWITCH = 22,

        WMT_ACQUIRE_LICENSE = 23,

        WMT_INDIVIDUALIZE = 24,

        WMT_NEEDS_INDIVIDUALIZATION = 25,

        WMT_NO_RIGHTS_EX = 26,

        WMT_BACKUPRESTORE_END = 27,

        WMT_BACKUPRESTORE_CONNECTING = 28,

        WMT_BACKUPRESTORE_DISCONNECTING = 29,

        WMT_ERROR_WITHURL = 30,

        WMT_RESTRICTED_LICENSE = 31,

        WMT_CLIENT_CONNECT = 32,

        WMT_CLIENT_DISCONNECT = 33,

        WMT_NATIVE_OUTPUT_PROPS_CHANGED = 34,

        WMT_RECONNECT_START = 35,

        WMT_RECONNECT_END = 36,

        WMT_CLIENT_CONNECT_EX = 37,

        WMT_CLIENT_DISCONNECT_EX = 38,

        WMT_SET_FEC_SPAN = 39,

        WMT_PREROLL_READY = 40,

        WMT_PREROLL_COMPLETE = 41,

        WMT_CLIENT_PROPERTIES = 42,

        WMT_LICENSEURL_SIGNATURE_STATE = 43
    };


    public enum WMT_PLAY_MODE
    {

        WMT_PLAY_MODE_AUTOSELECT = 0,

        WMT_PLAY_MODE_LOCAL = 1,

        WMT_PLAY_MODE_DOWNLOAD = 2,

        WMT_PLAY_MODE_STREAMING = 3,
    };


    public enum WMT_OFFSET_FORMAT
    {

        WMT_OFFSET_FORMAT_100NS,

        WMT_OFFSET_FORMAT_FRAME_NUMBERS,

        WMT_OFFSET_FORMAT_PLAYLIST_OFFSET,

        WMT_OFFSET_FORMAT_TIMECODE
    };


    public enum WMT_CODEC_INFO_TYPE : uint
    {

        WMT_CODECINFO_AUDIO = 0,

        WMT_CODECINFO_VIDEO = 1,

        WMT_CODECINFO_UNKNOWN = 0xFFFFFFFF,
    };


    [Flags]
    public enum WMT_RIGHTS : uint
    {
        /// <summary>
        /// This rigth is not defined in the WMF SDK, I added it to
        /// play files with no DRM
        /// </summary>
        WMT_RIGHT_NO_DRM = 0x00000000,

        WMT_RIGHT_PLAYBACK = 0x00000001,

        WMT_RIGHT_COPY_TO_NON_SDMI_DEVICE = 0x00000002,

        WMT_RIGHT_COPY_TO_CD = 0x00000008,

        WMT_RIGHT_COPY_TO_SDMI_DEVICE = 0x00000010,

        WMT_RIGHT_ONE_TIME = 0x00000020,

        WMT_RIGHT_SAVE_STREAM_PROTECTED = 0x00000040,

        WMT_RIGHT_SDMI_TRIGGER = 0x00010000,

        WMT_RIGHT_SDMI_NOMORECOPIES = 0x00020000
    }


    public enum WMT_INDEXER_TYPE
    {

        WMT_IT_PRESENTATION_TIME,

        WMT_IT_FRAME_NUMBERS,

        WMT_IT_TIMECODE
    };


    public enum WMT_INDEX_TYPE
    {

        WMT_IT_NEAREST_DATA_UNIT = 1,

        WMT_IT_NEAREST_OBJECT,

        WMT_IT_NEAREST_CLEAN_POINT
    };


    public enum WMT_NET_PROTOCOL
    {

        WMT_PROTOCOL_HTTP = 0,
    };


    [StructLayout(LayoutKind.Sequential)]
    public struct WMT_TIMECODE_EXTENSION_DATA
    {

        public ushort wRange;

        public uint dwTimecode;

        public uint dwUserbits;

        public uint dwAmFlags;
    };


    [StructLayout(LayoutKind.Sequential)]
    public struct WM_STREAM_PRIORITY_RECORD
    {

        public ushort wStreamNumber;

        [MarshalAs(UnmanagedType.Bool)]
        public bool fMandatory;
    };


    [StructLayout(LayoutKind.Sequential)]
    public struct WM_MEDIA_TYPE
    {

        public Guid majortype;

        public Guid subtype;

        [MarshalAs(UnmanagedType.Bool)]
        public bool bFixedSizeSamples;

        [MarshalAs(UnmanagedType.Bool)]
        public bool bTemporalCompression;

        public uint lSampleSize;

        public Guid formattype;

        public IntPtr pUnk;

        public uint cbFormat;

        public IntPtr pbFormat;
    };


    [ComImport]
    [Guid("96406BCE-2B2B-11d3-B36B-00C04F6108FF")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IWMMediaProps
    {

        void GetType([Out] out Guid pguidType);

        void GetMediaType( /*[out] WM_MEDIA_TYPE* */ IntPtr pType,
                           [In, Out] ref uint pcbType);

        void SetMediaType([In] ref WM_MEDIA_TYPE pType);
    }


    [ComImport]
    [Guid("96406BCF-2B2B-11d3-B36B-00C04F6108FF")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IWMVideoMediaProps : IWMMediaProps
    {
        //IWMMediaProps
        new void GetType([Out] out Guid pguidType);
        new void GetMediaType( /*[out] WM_MEDIA_TYPE* */ IntPtr pType,
          [In, Out] ref uint pcbType);
        new void SetMediaType([In] ref WM_MEDIA_TYPE pType);
        //IWMVideoMediaProps
        void GetMaxKeyFrameSpacing([Out] out long pllTime);

        void SetMaxKeyFrameSpacing([In] long llTime);

        void GetQuality([Out] out uint pdwQuality);

        void SetQuality([In] uint dwQuality);
    }


    [ComImport]
    [Guid("96406BD5-2B2B-11d3-B36B-00C04F6108FF")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IWMInputMediaProps : IWMMediaProps
    {
        //IWMMediaProps
        new void GetType([Out] out Guid pguidType);
        new void GetMediaType( /*[out] WM_MEDIA_TYPE* */ IntPtr pType,
          [In, Out] ref uint pcbType);
        new void SetMediaType([In] ref WM_MEDIA_TYPE pType);
        //IWMInputMediaProps  
        void GetConnectionName([Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszName,
                               [In, Out] ref ushort pcchName);

        void GetGroupName([Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszName,
                          [In, Out] ref ushort pcchName);
    }


    [ComImport]
    [Guid("96406BD7-2B2B-11d3-B36B-00C04F6108FF")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IWMOutputMediaProps : IWMMediaProps
    {
        //IWMMediaProps
        new void GetType([Out] out Guid pguidType);
        new void GetMediaType( /*[out] WM_MEDIA_TYPE* */ IntPtr pType,
          [In, Out] ref uint pcbType);
        new void SetMediaType([In] ref WM_MEDIA_TYPE pType);
        //IWMOutputMediaProps    
        void GetStreamGroupName([Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszName,
                                [In, Out] ref ushort pcchName);

        void GetConnectionName([Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszName,
                               [In, Out] ref ushort pcchName);
    }


    [ComImport]
    [Guid("96406BDD-2B2B-11d3-B36B-00C04F6108FF")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IWMStreamList
    {

        void GetStreams([Out, MarshalAs(UnmanagedType.LPArray)] ushort[] pwStreamNumArray,
                        [In, Out] ref ushort pcStreams);

        void AddStream([In] ushort wStreamNum);

        void RemoveStream([In] ushort wStreamNum);
    };


    [ComImport]
    [Guid("96406BDE-2B2B-11d3-B36B-00C04F6108FF")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IWMMutualExclusion : IWMStreamList
    {
        //IWMStreamList
        new void GetStreams([Out, MarshalAs(UnmanagedType.LPArray)] ushort[] pwStreamNumArray,
         [In, Out] ref ushort pcStreams);
        new void AddStream([In] ushort wStreamNum);
        new void RemoveStream([In] ushort wStreamNum);
        //IWMMutualExclusion
        void GetType([Out] out Guid pguidType);

        void SetType([In] ref Guid guidType);
    };


    [ComImport]
    [Guid("0302B57D-89D1-4ba2-85C9-166F2C53EB91")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IWMMutualExclusion2 : IWMMutualExclusion
    {
        //IWMStreamList
        new void GetStreams([Out, MarshalAs(UnmanagedType.LPArray)] ushort[] pwStreamNumArray,
         [In, Out] ref ushort pcStreams);
        new void AddStream([In] ushort wStreamNum);
        new void RemoveStream([In] ushort wStreamNum);
        //IWMMutualExclusion
        new void GetType([Out] out Guid pguidType);
        new void SetType([In] ref Guid guidType);
        //IWMMutualExclusion2
        void GetName([Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszName,
                     [In, Out] ref ushort pcchName);

        void SetName([In, MarshalAs(UnmanagedType.LPWStr)] string pwszName);

        void GetRecordCount([Out] out ushort pwRecordCount);

        void AddRecord();

        void RemoveRecord([In] ushort wRecordNumber);

        void GetRecordName([In] ushort wRecordNumber,
                           [Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszRecordName,
                           [In, Out] ref ushort pcchRecordName);

        void SetRecordName([In] ushort wRecordNumber,
                           [In, MarshalAs(UnmanagedType.LPWStr)] string pwszRecordName);

        void GetStreamsForRecord([In] ushort wRecordNumber,
                                 [Out, MarshalAs(UnmanagedType.LPArray)] ushort[] pwStreamNumArray,
                                 [In, Out] ref ushort pcStreams);

        void AddStreamForRecord([In] ushort wRecordNumber, [In] ushort wStreamNumber);

        void RemoveStreamForRecord([In] ushort wRecordNumber, [In] ushort wStreamNumber);
    }


    [ComImport]
    [Guid("AD694AF1-F8D9-42F8-BC47-70311B0C4F9E")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IWMBandwidthSharing : IWMStreamList
    {
        //IWMStreamList
        new void GetStreams([Out, MarshalAs(UnmanagedType.LPArray)] ushort[] pwStreamNumArray,
         [In, Out] ref ushort pcStreams);
        new void AddStream([In] ushort wStreamNum);
        new void RemoveStream([In] ushort wStreamNum);
        //IWMBandwidthSharing    
        void GetType([Out] out Guid pguidType);

        void SetType([In] ref Guid guidType);

        void GetBandwidth([Out] out uint pdwBitrate, [Out] out uint pmsBufferWindow);

        void SetBandwidth([In] uint dwBitrate, [In] uint msBufferWindow);
    }


    [ComImport]
    [Guid("8C1C6090-F9A8-4748-8EC3-DD1108BA1E77")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IWMStreamPrioritization
    {

        void GetPriorityRecords([Out, MarshalAs(UnmanagedType.LPArray)] WM_STREAM_PRIORITY_RECORD[] pRecordArray,
                                [In, Out] ref ushort pcRecords);

        void SetPriorityRecords([In, MarshalAs(UnmanagedType.LPArray)] WM_STREAM_PRIORITY_RECORD[] pRecordArray,
                                [In] ushort cRecords);
    }


    [ComImport]
    [Guid("6d7cdc70-9888-11d3-8edc-00c04f6109cf")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IWMStatusCallback
    {

        void OnStatus([In] WMT_STATUS Status,
                      [In] IntPtr hr,
                      [In] WMT_ATTR_DATATYPE dwType,
                      [In] IntPtr pValue,
                      [In] IntPtr pvContext);
    }


    [ComImport]
    [Guid("96406BDA-2B2B-11d3-B36B-00C04F6108FF")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IWMHeaderInfo
    {

        void GetAttributeCount([In] ushort wStreamNum, [Out] out ushort pcAttributes);

        void GetAttributeByIndex([In] ushort wIndex,
                                 [In, Out] ref ushort pwStreamNum,
                                 [Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszName,
                                 [In, Out] ref ushort pcchNameLen,
                                 [Out] out WMT_ATTR_DATATYPE pType,
                                 IntPtr pValue,
                                 [In, Out] ref ushort pcbLength);

        void GetAttributeByName([In, Out] ref ushort pwStreamNum,
                                [In, MarshalAs(UnmanagedType.LPWStr)] string pszName,
                                [Out] out WMT_ATTR_DATATYPE pType,
                                IntPtr pValue,
                                [In, Out] ref ushort pcbLength);

        void SetAttribute([In] ushort wStreamNum,
                          [In, MarshalAs(UnmanagedType.LPWStr)] string pszName,
                          [In] WMT_ATTR_DATATYPE Type,
                          IntPtr pValue,
                          [In] ushort cbLength);

        void GetMarkerCount([Out] out ushort pcMarkers);

        void GetMarker([In] ushort wIndex,
                       [Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszMarkerName,
                       [In, Out] ref ushort pcchMarkerNameLen,
                       [Out] out ulong pcnsMarkerTime);

        void AddMarker([In, MarshalAs(UnmanagedType.LPWStr)] string pwszMarkerName,
                       [In] ulong cnsMarkerTime);

        void RemoveMarker([In] ushort wIndex);

        void GetScriptCount([Out] out ushort pcScripts);

        void GetScript([In] ushort wIndex,
                       [Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszType,
                       [In, Out] ref ushort pcchTypeLen,
                       [Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszCommand,
                       [In, Out] ref ushort pcchCommandLen,
                       [Out] out ulong pcnsScriptTime);

        void AddScript([In, MarshalAs(UnmanagedType.LPWStr)] string pwszType,
                       [In, MarshalAs(UnmanagedType.LPWStr)] string pwszCommand,
                       [In] ulong cnsScriptTime);

        void RemoveScript([In] ushort wIndex);
    }


    [ComImport]
    [Guid("15CF9781-454E-482e-B393-85FAE487A810")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IWMHeaderInfo2 : IWMHeaderInfo
    {
        //IWMHeaderInfo
        new void GetAttributeCount([In] ushort wStreamNum, [Out] out ushort pcAttributes);
        new void GetAttributeByIndex([In] ushort wIndex,
         [In, Out] ref ushort pwStreamNum,
         [Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszName,
         [In, Out] ref ushort pcchNameLen,
         [Out] out WMT_ATTR_DATATYPE pType,
         IntPtr pValue,
         [In, Out] ref ushort pcbLength);
        new void GetAttributeByName([In, Out] ref ushort pwStreamNum,
         [In, MarshalAs(UnmanagedType.LPWStr)] string pszName,
         [Out] out WMT_ATTR_DATATYPE pType,
         IntPtr pValue,
         [In, Out] ref ushort pcbLength);
        new void SetAttribute([In] ushort wStreamNum,
         [In, MarshalAs(UnmanagedType.LPWStr)] string pszName,
         [In] WMT_ATTR_DATATYPE Type,
         IntPtr pValue,
         [In] ushort cbLength);
        new void GetMarkerCount([Out] out ushort pcMarkers);
        new void GetMarker([In] ushort wIndex,
         [Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszMarkerName,
         [In, Out] ref ushort pcchMarkerNameLen,
         [Out] out ulong pcnsMarkerTime);
        new void AddMarker([In, MarshalAs(UnmanagedType.LPWStr)] string pwszMarkerName,
         [In] ulong cnsMarkerTime);
        new void RemoveMarker([In] ushort wIndex);
        new void GetScriptCount([Out] out ushort pcScripts);
        new void GetScript([In] ushort wIndex,
         [Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszType,
         [In, Out] ref ushort pcchTypeLen,
         [Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszCommand,
         [In, Out] ref ushort pcchCommandLen,
         [Out] out ulong pcnsScriptTime);
        new void AddScript([In, MarshalAs(UnmanagedType.LPWStr)] string pwszType,
         [In, MarshalAs(UnmanagedType.LPWStr)] string pwszCommand,
         [In] ulong cnsScriptTime);
        new void RemoveScript([In] ushort wIndex);
        //IWMHeaderInfo2
        void GetCodecInfoCount([Out] out uint pcCodecInfos);

        void GetCodecInfo([In] uint wIndex,
                          [In, Out] ref ushort pcchName,
                          [Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszName,
                          [In, Out] ref ushort pcchDescription,
                          [Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszDescription,
                          [Out] out WMT_CODEC_INFO_TYPE pCodecType,
                          [In, Out] ref ushort pcbCodecInfo,
                          [Out, MarshalAs(UnmanagedType.LPArray)] byte[] pbCodecInfo);
    }


    [ComImport]
    [Guid("15CC68E3-27CC-4ecd-B222-3F5D02D80BD5")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IWMHeaderInfo3 : IWMHeaderInfo2
    {
        //IWMHeaderInfo
        new void GetAttributeCount([In] ushort wStreamNum, [Out] out ushort pcAttributes);

        void GetAttributeByIndex(
            [In]									ushort wIndex,
            [Out, In]								ref ushort pwStreamNum,
            [Out, MarshalAs(UnmanagedType.LPWStr)]	string pwszName,
            [Out, In]								ref ushort pcchNameLen,
            [Out]									out WMT_ATTR_DATATYPE pType,
            [Out, MarshalAs(UnmanagedType.LPArray)]	byte[] pValue,
            [Out, In]								ref ushort pcbLength);

        void GetAttributeByName([In, Out] ref ushort pwStreamNum,
           [In, MarshalAs(UnmanagedType.LPWStr)] string pszName,
           [Out] out WMT_ATTR_DATATYPE pType,
           [Out, MarshalAs(UnmanagedType.LPArray)] byte[] pValue,
           [In, Out] ref ushort pcbLength);

        void SetAttribute(
            [In]									ushort wStreamNum,
            [In, MarshalAs(UnmanagedType.LPWStr)]	string pszName,
            [In]									WMT_ATTR_DATATYPE Type,
            [In, MarshalAs(UnmanagedType.LPArray)]	byte[] pValue,
            [In]									ushort cbLength);

        new void GetMarkerCount([Out] out ushort pcMarkers);

        new void GetMarker([In] ushort wIndex,
           [Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszMarkerName,
           [In, Out] ref ushort pcchMarkerNameLen,
           [Out] out ulong pcnsMarkerTime);

        new void AddMarker([In, MarshalAs(UnmanagedType.LPWStr)] string pwszMarkerName,
           [In] ulong cnsMarkerTime);

        new void RemoveMarker([In] ushort wIndex);

        new void GetScriptCount([Out] out ushort pcScripts);

        new void GetScript([In] ushort wIndex,
           [Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszType,
           [In, Out] ref ushort pcchTypeLen,
           [Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszCommand,
           [In, Out] ref ushort pcchCommandLen,
           [Out] out ulong pcnsScriptTime);

        new void AddScript([In, MarshalAs(UnmanagedType.LPWStr)] string pwszType,
           [In, MarshalAs(UnmanagedType.LPWStr)] string pwszCommand,
           [In] ulong cnsScriptTime);

        new void RemoveScript([In] ushort wIndex);

        //IWMHeaderInfo2

        new void GetCodecInfoCount([Out] out uint pcCodecInfos);

        new void GetCodecInfo([In] uint wIndex,
           [In, Out] ref ushort pcchName,
           [Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszName,
           [In, Out] ref ushort pcchDescription,
           [Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszDescription,
           [Out] out WMT_CODEC_INFO_TYPE pCodecType,
           [In, Out] ref ushort pcbCodecInfo,
           [Out, MarshalAs(UnmanagedType.LPArray)] byte[] pbCodecInfo);

        //IWMHeaderInfo3
        void GetAttributeCountEx([In] ushort wStreamNum, [Out] out ushort pcAttributes);

        void GetAttributeIndices([In] ushort wStreamNum,
           [In, MarshalAs(UnmanagedType.LPWStr)] string pwszName,
            /* DWORD* */IntPtr pwLangIndex,
           [Out, MarshalAs(UnmanagedType.LPArray)] ushort[] pwIndices,
           [In, Out] ref ushort pwCount);

        void GetAttributeByIndexEx([In] ushort wStreamNum,
           [In] ushort wIndex,
           [Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszName,
           [In, Out] ref ushort pwNameLen,
           [Out] out WMT_ATTR_DATATYPE pType,
           [Out] out ushort pwLangIndex,
           IntPtr pValue,
           [In, Out] ref uint pdwDataLength);

        void ModifyAttribute([In] ushort wStreamNum,
           [In] ushort wIndex,
           [In] WMT_ATTR_DATATYPE Type,
           [In] ushort wLangIndex,
           IntPtr pValue,
           [In] uint dwLength);

        void AddAttribute([In] ushort wStreamNum,
                          [In, MarshalAs(UnmanagedType.LPWStr)] string pszName,
                          [Out] out ushort pwIndex,
                          [In] WMT_ATTR_DATATYPE Type,
                          [In] ushort wLangIndex,
                          IntPtr pValue,
                          [In] uint dwLength);

        void DeleteAttribute([In] ushort wStreamNum, [In] ushort wIndex);

        void AddCodecInfo([In, MarshalAs(UnmanagedType.LPWStr)] string pwszName,
                          [In, MarshalAs(UnmanagedType.LPWStr)] string pwszDescription,
                          [In] WMT_CODEC_INFO_TYPE codecType,
                          [In] ushort cbCodecInfo,
                          [In, MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 3)] byte[] pbCodecInfo);
    }


    [ComImport]
    [Guid("96406BD9-2B2B-11d3-B36B-00C04F6108FF")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IWMMetadataEditor
    {

        void Open([In, MarshalAs(UnmanagedType.LPWStr)] string pwszFilename);

        void Close();

        void Flush();
    }


    [Guid("203CFFE3-2E18-4fdf-B59D-6E71530534CF")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IWMMetadataEditor2 : IWMMetadataEditor
    {
        //IWMMetadataEditor
        new void Open([In, MarshalAs(UnmanagedType.LPWStr)] string pwszFilename);
        new void Close();
        new void Flush();
        //IWMMetadataEditor2
        void OpenEx([In, MarshalAs(UnmanagedType.LPWStr)] string pwszFilename,
                    [In] uint dwDesiredAccess,
                    [In] uint dwShareMode);
    }


    [ComImport]
    [Guid("6d7cdc71-9888-11d3-8edc-00c04f6109cf")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IWMIndexer
    {

        void StartIndexing([In, MarshalAs(UnmanagedType.LPWStr)] string pwszURL,
                           [In, MarshalAs(UnmanagedType.Interface)] IWMStatusCallback pCallback,
                           [In] IntPtr pvContext);

        void Cancel();
    }


    [ComImport]
    [Guid("B70F1E42-6255-4df0-A6B9-02B212D9E2BB")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IWMIndexer2 : IWMIndexer
    {
        //IWMIndexer
        new void StartIndexing([In, MarshalAs(UnmanagedType.LPWStr)] string pwszURL,
         [In, MarshalAs(UnmanagedType.Interface)] IWMStatusCallback pCallback,
         [In] IntPtr pvContext);
        new void Cancel();
        //IWMIndexer2
        void Configure([In] ushort wStreamNum,
                          [In] WMT_INDEXER_TYPE nIndexerType,
                          [In] IntPtr pvInterval,
                          [In] IntPtr pvIndexType);
    }

}

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