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MediaParam.cs
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MediaParam.cs
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#region license
/*
DirectShowLib - Provide access to DirectShow interfaces via .NET
Copyright (C) 2007
http://sourceforge.net/projects/directshownet/
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#endregion
using System;
using System.Runtime.InteropServices;
namespace DirectShowLib.DMO
{
#region Declarations
sealed public class MediaParamTimeFormat
{
private MediaParamTimeFormat()
{
// Prevent people from trying to instantiate this class
}
/// <summary> GUID_TIME_REFERENCE </summary>
public static readonly Guid Reference = new Guid(0x93ad712b, 0xdaa0, 0x4ffe, 0xbc, 0x81, 0xb0, 0xce, 0x50, 0x0f, 0xcd, 0xd9);
/// <summary> GUID_TIME_MUSIC </summary>
public static readonly Guid Music = new Guid(0x0574c49d, 0x5b04, 0x4b15, 0xa5, 0x42, 0xae, 0x28, 0x20, 0x30, 0x11, 0x7b);
/// <summary> GUID_TIME_SAMPLES, audio capture category </summary>
public static readonly Guid Samples = new Guid(0xa8593d05, 0x0c43, 0x4984, 0x9a, 0x63, 0x97, 0xaf, 0x9e, 0x02, 0xc4, 0xc0);
}
/// <summary>
/// From MP_DATA
/// </summary>
[StructLayout(LayoutKind.Explicit)]
public struct MPData
{
[FieldOffset(0)] public bool vBool;
[FieldOffset(0)] public float vFloat;
[FieldOffset(0)] public int vInt;
}
/// <summary>
/// From MP_ENVELOPE_SEGMENT
/// </summary>
[StructLayout(LayoutKind.Sequential, Pack=8)]
public struct MPEnvelopeSegment
{
public long rtStart;
public long rtEnd;
public MPData valStart;
public MPData valEnd;
public MPCaps iCurve;
public MPFlags flags;
}
/// <summary>
/// From MPF_ENVLP_* defines
/// </summary>
[Flags]
public enum MPFlags
{
Standard = 0x0,
BeginCurrentVal = 0x1,
BeginNeutralVal = 0x2
}
/// <summary>
/// From MP_TYPE
/// </summary>
public enum MPType
{
// Fields
BOOL = 2,
ENUM = 3,
FLOAT = 1,
INT = 0,
MAX = 4
}
/// <summary>
/// From MP_CAPS_CURVE* defines
/// </summary>
[Flags]
public enum MPCaps
{
None = 0,
Jump = 0x1,
Linear = 0x2,
Square = 0x4,
InvSquare = 0x8,
Sine = 0x10
}
/// <summary>
/// From MP_PARAMINFO
/// </summary>
[StructLayout(LayoutKind.Sequential, Pack = 4, CharSet = CharSet.Unicode)]
public struct ParamInfo
{
public MPType mpType;
public MPCaps mopCaps;
public MPData mpdMinValue;
public MPData mpdMaxValue;
public MPData mpdNeutralValue;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst=0x20)]
public string szUnitText;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst=0x20)]
public string szLabel;
}
#endregion
#region Interfaces
[ComImport, System.Security.SuppressUnmanagedCodeSecurity,
InterfaceType(ComInterfaceType.InterfaceIsIUnknown),
Guid("6D6CBB60-A223-44AA-842F-A2F06750BE6D")]
public interface IMediaParamInfo
{
[PreserveSig]
int GetParamCount(
out int pdwParams
);
[PreserveSig]
int GetParamInfo(
[In] int dwParamIndex,
out ParamInfo pInfo
);
[PreserveSig]
int GetParamText(
[In] int dwParamIndex,
out IntPtr ip
);
[PreserveSig]
int GetNumTimeFormats(
out int pdwNumTimeFormats
);
[PreserveSig]
int GetSupportedTimeFormat(
[In] int dwFormatIndex,
out Guid pguidTimeFormat
);
[PreserveSig]
int GetCurrentTimeFormat(
out Guid pguidTimeFormat,
out int pTimeData
);
}
[ComImport, System.Security.SuppressUnmanagedCodeSecurity,
InterfaceType(ComInterfaceType.InterfaceIsIUnknown),
Guid("6D6CBB61-A223-44AA-842F-A2F06750BE6E")]
public interface IMediaParams
{
[PreserveSig]
int GetParam(
[In] int dwParamIndex,
out MPData pValue
);
[PreserveSig]
int SetParam(
[In] int dwParamIndex,
[In] MPData value
);
[PreserveSig]
int AddEnvelope(
[In] int dwParamIndex,
[In] int cSegments,
[In, MarshalAs(UnmanagedType.LPArray, SizeParamIndex=1)] MPEnvelopeSegment [] pEnvelopeSegments
);
[PreserveSig]
int FlushEnvelope(
[In] int dwParamIndex,
[In] long refTimeStart,
[In] long refTimeEnd
);
[PreserveSig]
int SetTimeFormat(
[In] Guid MediaParamTimeFormat,
[In] int mpTimeData
);
}
#endregion
}