mediaobj.cs

DirectShowLibV1-5針對DirectShow一些函數以及指令和LIB的檔案

            {
                case DMOResults.E_InvalidStreamIndex:
                    sRet = "Invalid stream index.";
                    break;
                case DMOResults.E_InvalidType:
                    sRet = "Invalid media type.";
                    break;
                case DMOResults.E_TypeNotSet:
                    sRet = "Media type was not set. One or more streams require a media type before this operation can be performed.";
                    break;
                case DMOResults.E_NotAccepting:
                    sRet = "Data cannot be accepted on this stream. You might need to process more output data; see IMediaObject::ProcessInput.";
                    break;
                case DMOResults.E_TypeNotAccepted:
                    sRet = "Media type was not accepted.";
                    break;
                case DMOResults.E_NoMoreItems:
                    sRet = "Media-type index is out of range.";
                    break;
                default:
                    sRet = DsError.GetErrorText(hr);
                    break;
            }

            return sRet;
        }

        /// <summary>
        /// If hr has a "failed" status code (E_*), throw an exception.  Note that status
        /// messages (S_*) are not considered failure codes.  If DMO or DShow error text
        /// is available, it is used to build the exception, otherwise a generic COM error
        /// is thrown.
        /// </summary>
        /// <param name="hr">The HRESULT to check</param>
        public static void ThrowExceptionForHR(int hr)
        {
            // If an error has occurred
            if (hr < 0)
            {
                // If a string is returned, build a com error from it
                string buf = GetErrorText(hr);

                if (buf != null)
                {
                    throw new COMException(buf, hr);
                }
                else
                {
                    // No string, just use standard com error
                    Marshal.ThrowExceptionForHR(hr);
                }
            }
        }
    }


    #endregion

    #region Interfaces

#if ALLOW_UNTESTED_INTERFACES

    [ComImport,
    Guid("65ABEA96-CF36-453F-AF8A-705E98F16260"),
    InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IDMOQualityControl
    {
        [PreserveSig]
        int SetNow(
            [In] long rtNow
            );

        [PreserveSig]
        int SetStatus(
            [In] DMOQualityStatus dwFlags
            );

        [PreserveSig]
        int GetStatus(
            out DMOQualityStatus pdwFlags
            );
    }

#endif

    [ComImport,
    InterfaceType(ComInterfaceType.InterfaceIsIUnknown),
    Guid("2C3CD98A-2BFA-4A53-9C27-5249BA64BA0F")]
    public interface IEnumDMO
    {
        [PreserveSig]
        int Next(
            int cItemsToFetch,
            [Out, MarshalAs(UnmanagedType.LPArray, SizeParamIndex=0)] Guid[] pCLSID,
            [Out, MarshalAs(UnmanagedType.LPArray, SizeParamIndex=0)] string[] Names,
            [Out] out int pcItemsFetched
            );

        [PreserveSig]
        int Skip(
            int cItemsToSkip
            );

        [PreserveSig]
        int Reset();

        [PreserveSig]
        int Clone(
            [MarshalAs(UnmanagedType.Interface)] out IEnumDMO ppEnum
            );
    }

    [ComImport,
    InterfaceType(ComInterfaceType.InterfaceIsIUnknown),
    Guid("651B9AD0-0FC7-4AA9-9538-D89931010741")]
    public interface IMediaObjectInPlace
    {
        [PreserveSig]
        int Process(
            [In] int ulSize,
            [In] IntPtr pData,
            [In] long refTimeStart,
            [In] DMOInplaceProcess dwFlags
            );

        [PreserveSig]
        int Clone(
            [MarshalAs(UnmanagedType.Interface)] out IMediaObjectInPlace ppMediaObject
            );

        [PreserveSig]
        int GetLatency(
            out long pLatencyTime
            );
    }

    [ComImport,
    Guid("59EFF8B9-938C-4A26-82F2-95CB84CDC837"),
    InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IMediaBuffer
    {
        [PreserveSig]
        int SetLength(
            int cbLength
            );

        [PreserveSig]
        int GetMaxLength(
            out int pcbMaxLength
            );

        [PreserveSig]
        int GetBufferAndLength(
            out IntPtr ppBuffer,
            out int pcbLength
            );
    }

    [ComImport,
    Guid("D8AD0F58-5494-4102-97C5-EC798E59BCF4"),
    InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IMediaObject
    {
        [PreserveSig]
        int GetStreamCount(
            out int pcInputStreams,
            out int pcOutputStreams
            );

        [PreserveSig]
        int GetInputStreamInfo(
            int dwInputStreamIndex,
            out DMOInputStreamInfo pdwFlags
            );

        [PreserveSig]
        int GetOutputStreamInfo(
            int dwOutputStreamIndex,
            out DMOOutputStreamInfo pdwFlags
            );

        [PreserveSig]
        int GetInputType(
            int dwInputStreamIndex,
            int dwTypeIndex,
            [Out] AMMediaType pmt
            );

        [PreserveSig]
        int GetOutputType(
            int dwOutputStreamIndex,
            int dwTypeIndex,
            [Out] AMMediaType pmt
            );

        [PreserveSig]
        int SetInputType(
            int dwInputStreamIndex,
            [In, MarshalAs(UnmanagedType.LPStruct)] AMMediaType pmt,
            DMOSetType dwFlags
            );

        [PreserveSig]
        int SetOutputType(
            int dwOutputStreamIndex,
            [In, MarshalAs(UnmanagedType.LPStruct)] AMMediaType pmt,
            DMOSetType dwFlags
            );

        [PreserveSig]
        int GetInputCurrentType(
            int dwInputStreamIndex,
            [Out] AMMediaType pmt
            );

        [PreserveSig]
        int GetOutputCurrentType(
            int dwOutputStreamIndex,
            [Out] AMMediaType pmt
            );

        [PreserveSig]
        int GetInputSizeInfo(
            int dwInputStreamIndex,
            out int pcbSize,
            out int pcbMaxLookahead,
            out int pcbAlignment
            );

        [PreserveSig]
        int GetOutputSizeInfo(
            int dwOutputStreamIndex,
            out int pcbSize,
            out int pcbAlignment
            );

        [PreserveSig]
        int GetInputMaxLatency(
            int dwInputStreamIndex,
            out long prtMaxLatency
            );

        [PreserveSig]
        int SetInputMaxLatency(
            int dwInputStreamIndex,
            long rtMaxLatency
            );

        [PreserveSig]
        int Flush();

        [PreserveSig]
        int Discontinuity(
            int dwInputStreamIndex
            );

        [PreserveSig]
        int AllocateStreamingResources();

        [PreserveSig]
        int FreeStreamingResources();

        [PreserveSig]
        int GetInputStatus(
            int dwInputStreamIndex,
            out DMOInputStatusFlags dwFlags
            );

        [PreserveSig]
        int ProcessInput(
            int dwInputStreamIndex,
            IMediaBuffer pBuffer,
            DMOInputDataBuffer dwFlags,
            long rtTimestamp,
            long rtTimelength
            );

        [PreserveSig]
        int ProcessOutput(
            DMOProcessOutput dwFlags,
            int cOutputBufferCount,
            [In, Out, MarshalAs(UnmanagedType.LPArray, SizeParamIndex=1)] DMOOutputDataBuffer [] pOutputBuffers,
            out int pdwStatus
            );

        [PreserveSig]
        int Lock(
            [MarshalAs(UnmanagedType.Bool)] bool bLock
            );
    }

    [ComImport,
    Guid("BE8F4F4E-5B16-4D29-B350-7F6B5D9298AC"),
    InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IDMOVideoOutputOptimizations
    {
        [PreserveSig]
        int QueryOperationModePreferences(
            int ulOutputStreamIndex,
            out DMOVideoOutputStream pdwRequestedCapabilities
            );

        [PreserveSig]
        int SetOperationMode(
            int ulOutputStreamIndex,
            DMOVideoOutputStream dwEnabledFeatures
            );

        [PreserveSig]
        int GetCurrentOperationMode(
            int ulOutputStreamIndex,
            out DMOVideoOutputStream pdwEnabledFeatures
            );

        [PreserveSig]
        int GetCurrentSampleRequirements(
            int ulOutputStreamIndex,
            out DMOVideoOutputStream pdwRequestedFeatures
            );
    }

    #endregion
}