Windows-classic-samples/Samples/Win7Samples/multimedia/windowsmediaformat/managed/wmfsdkwrapper/WMFSDKFunctions.cs

//*****************************************************************************
//
// Microsoft Windows Media
// Copyright ( C) Microsoft Corporation. All rights reserved.
//
// FileName:            WMFSDKFunction.cs
//
// Abstract:            Wrapper used by managed-code samples.
//
//*****************************************************************************


using System;
using System.Runtime.InteropServices;

namespace WMFSDKWrapper
{
	public class WMFSDKFunctions
	{
		[DllImport("WMVCore.dll", EntryPoint="WMCreateEditor",  SetLastError=true,
			 CharSet=CharSet.Unicode, ExactSpelling=true,
			 CallingConvention=CallingConvention.StdCall)]
		public static extern uint WMCreateEditor(
			[Out, MarshalAs(UnmanagedType.Interface)]	out IWMMetadataEditor  ppMetadataEditor );

		public WMFSDKFunctions()
		{
			//
			// TODO: Add constructor logic here
			//
		}
	}

	[Guid("96406BD9-2B2B-11d3-B36B-00C04F6108FF"),
	InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]	
	public interface IWMMetadataEditor 
	{
		uint Open(	[In,MarshalAs(UnmanagedType.LPWStr)] string pwszFilename );
		uint Close();
		uint Flush();

	}

	[Guid("15CC68E3-27CC-4ecd-B222-3F5D02D80BD5"),
	InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]	
	public interface IWMHeaderInfo3 
	{
		uint GetAttributeCount( 
			[In]									ushort wStreamNum,
			[Out]									out ushort pcAttributes );
	        
		uint 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 );
	        
		uint GetAttributeByName( 
			[Out,In]								ref ushort pwStreamNum,
			[Out,MarshalAs(UnmanagedType.LPWStr)]	string pszName,
			[Out]									out WMT_ATTR_DATATYPE pType,
			[Out, MarshalAs(UnmanagedType.LPArray)]	byte[] pValue,
			[Out,In]								ref ushort pcbLength );
	        
		uint SetAttribute( 
			[In]									ushort wStreamNum,
			[In,MarshalAs(UnmanagedType.LPWStr)]	string pszName,
			[In]									WMT_ATTR_DATATYPE Type,
			[In, MarshalAs(UnmanagedType.LPArray)]	byte[] pValue,
			[In]									ushort cbLength );
	        
		uint GetMarkerCount( 
			[Out]									out ushort pcMarkers );
	        
		uint GetMarker( 
			[In]									ushort wIndex,
			[Out, MarshalAs(UnmanagedType.LPWStr)]	string pwszMarkerName,
			[Out,In]								ref ushort pcchMarkerNameLen,
			[Out]									out ulong pcnsMarkerTime);
	        
		uint AddMarker( 
			[In,MarshalAs(UnmanagedType.LPWStr)]	string pwszMarkerName,
			[In]									ulong cnsMarkerTime );
	        
		uint RemoveMarker( 
			[In]									ushort wIndex );
	        
		uint GetScriptCount( 
			[Out]									out ushort pcScripts );
	        
		uint GetScript( 
			[In]									ushort wIndex,
			[Out,MarshalAs(UnmanagedType.LPWStr)]	string pwszType,
			[Out, In]								ref ushort pcchTypeLen,
			[Out,MarshalAs(UnmanagedType.LPWStr)]	string pwszCommand,
			[Out,In]								ref ushort pcchCommandLen,
			[Out]									out ulong pcnsScriptTime );
	        
		uint AddScript( 
			[In,MarshalAs(UnmanagedType.LPWStr)]	string pwszType,
			[In,MarshalAs(UnmanagedType.LPWStr)]	string pwszCommand,
			[In]									ulong cnsScriptTime );
	        
		uint RemoveScript( 
			[In]									ushort wIndex );  
 
		uint GetCodecInfoCount( 
			[Out]									out uint pcCodecInfos );
	        
		uint GetCodecInfo( 
			[In]									uint wIndex,
			[Out,In]								ref ushort pcchName,
			[Out,MarshalAs(UnmanagedType.LPWStr)]	string pwszName,
			[Out,In]								ref ushort pcchDescription,
			[Out,MarshalAs(UnmanagedType.LPWStr)]	string pwszDescription,
			[Out]									out WMT_CODEC_INFO_TYPE pCodecType,
			[Out,In]								ref ushort pcbCodecInfo,
			[Out, MarshalAs(UnmanagedType.LPArray)]	byte[] pbCodecInfo );

		uint GetAttributeCountEx( 
			[In]									ushort wStreamNum,
			[Out]									out ushort pcAttributes );
	        
		uint GetAttributeIndices( 
			[In]									ushort wStreamNum,
			[In,MarshalAs(UnmanagedType.LPWStr)]	string pwszName,
			[In]									ref ushort pwLangIndex,
			[Out, MarshalAs(UnmanagedType.LPArray)] ushort[] pwIndices,
			[Out,In]								ref ushort pwCount );
				        
		uint GetAttributeByIndexEx( 
			[In]									ushort wStreamNum,
			[In]									ushort wIndex,
			[Out,MarshalAs(UnmanagedType.LPWStr)]	string pwszName,
			[Out,In]								ref ushort pwNameLen,
			[Out]									out WMT_ATTR_DATATYPE pType,
			[Out]									out ushort pwLangIndex,
			[Out, MarshalAs(UnmanagedType.LPArray)]	byte[] pValue,
			[Out,In]								ref uint pdwDataLength );
									
		uint ModifyAttribute( 
			[In]									ushort wStreamNum,
			[In]									ushort wIndex,
			[In]									WMT_ATTR_DATATYPE Type,
			[In]									ushort wLangIndex,			
			[In, MarshalAs(UnmanagedType.LPArray)]	byte[] pValue,
			[In]									uint dwLength );
	        
		uint AddAttribute( 
			[In]									ushort wStreamNum,
			[In,MarshalAs(UnmanagedType.LPWStr)]	string pszName,
			[Out]									out ushort pwIndex,
			[In]									WMT_ATTR_DATATYPE Type,
			[In]									ushort wLangIndex,			
			[In, MarshalAs(UnmanagedType.LPArray)]	byte[] pValue,
			[In]									uint dwLength );
	        
		uint  DeleteAttribute( 
			[In]									ushort wStreamNum,
			[In]									ushort wIndex );

		uint AddCodecInfo( 
			[In,MarshalAs(UnmanagedType.LPWStr)]	string pszName,
			[In,MarshalAs(UnmanagedType.LPWStr)]	string pwszDescription,
			[In]									WMT_CODEC_INFO_TYPE codecType,
			[In]									ushort cbCodecInfo,
		    [In, MarshalAs(UnmanagedType.LPArray)]	byte[] pbCodecInfo );
	}

	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_CODEC_INFO_TYPE
	{
		WMT_CODECINFO_AUDIO   = 0,
		WMT_CODECINFO_VIDEO   = 1,
		WMT_CODECINFO_UNKNOWN = 0xffffff
	}
}