コード例 #1
0
        /// <summary>
        /// Read Track entity
        /// </summary>
        /// <param name="trackLen">
        /// A <see cref="System.Int64"/>
        /// </param>
        public void ReadTrack(long trackLen)
        {
            string mkvElement = "";
            long lenElement = 0;
            long frameDuration = 0;
            byte[] tmpBuffer;

            // Create instance of new MkvTrackEntity
            MkvTrackEntity mte = new MkvTrackEntity();

            // Set end of Track
            long endTrack = streamPosition + trackLen - 1;

            // Loop for all track sub sections
            while (streamPosition < endTrack)
            {

                // Read elememt and len
                mkvElement = ReadElement();
                lenElement = long.Parse(GetVInt(ReadElement()),System.Globalization.NumberStyles.AllowHexSpecifier);

                // Debug
                log.Info(utils.GetRow(mkvElement, lenElement, streamPosition));

                if (mkvElement == MkvConstants.Header_TRACK_NUMBER)
                {
                    // NUMBER
                    tmpBuffer = new byte[Convert.ToInt32(lenElement)];
                    ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
                    streamPosition += lenElement;

                    // Track Number
                    mte.Number=  int.Parse(byteMan.GetHexFromBytes(tmpBuffer),
                              			   System.Globalization.NumberStyles.AllowHexSpecifier);

                }
                else if (mkvElement == MkvConstants.Header_TRACK_TYPE)
                {
                    // TYPE
                    tmpBuffer = new byte[Convert.ToInt32(lenElement)];
                    ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
                    streamPosition += lenElement;

                    // Should be 1 byte len
                    mte.Type = Convert.ToInt32(tmpBuffer[0]);

                }
                else if (mkvElement == MkvConstants.Header_TRACK_LANG)
                {
                    // LANGUAGE
                    tmpBuffer = new byte[Convert.ToInt32(lenElement)];
                    ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
                    streamPosition += lenElement;

                    // Convert Byte in Ascii
                    mte.Lang = byteMan.GetAsciiFromBytes(tmpBuffer);

                }
                else if (mkvElement == MkvConstants.Header_TRACK_CODEC)
                {
                    // CODEC
                    tmpBuffer = new byte[Convert.ToInt32(lenElement)];
                    ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
                    streamPosition += lenElement;

                    // Convert Byte in Ascii
                    mte.Codec = byteMan.GetAsciiFromBytes(tmpBuffer);

                }
                else if (mkvElement == MkvConstants.Header_TRACK_CODEC_PRIV &&
                         mte.Codec == MkvConstants.VideoForWinFourCC)
                {

                    // CODEC PRIVATE
                    tmpBuffer = new byte[Convert.ToInt32(lenElement)];
                    ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
                    streamPosition += lenElement;

                    // Get FourCC of codec description
                    mte.FourCC = byteMan.GetAsciiFromBytes(tmpBuffer, 16, 4);
                }
                else if (mkvElement == MkvConstants.Header_TRACK_VIDEO)
                {
                    // VIDEO
                    ReadVideo(lenElement, ref mte);

                }
                else if (mkvElement == MkvConstants.Header_TRACK_AUDIO)
                {
                    // AUDIO
                    ReadAudio(lenElement, ref mte);

                }
                else if (mkvElement == MkvConstants.Header_TRACK_DEFDURATION)
                {
                    // FRAME DURATION
                    tmpBuffer = new byte[Convert.ToInt32(lenElement)];
                    ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
                    streamPosition += lenElement;
                    frameDuration =  long.Parse(byteMan.GetHexFromBytes(tmpBuffer),
                                                System.Globalization.NumberStyles.AllowHexSpecifier);

                    mte.FrameRate = (float)(Math.Pow(10, 9) / frameDuration);

                }
                else
                {
                    // Skip section
                    streamPosition += lenElement;
                    ifs.Seek(lenElement, SeekOrigin.Current);
                }
            }

            _mkvContainer.Add(mte);
        }
コード例 #2
0
        /// <summary>
        /// Read Video track and update TrackEntity
        /// </summary>
        /// <param name="videoLen">
        /// A <see cref="System.Int64"/>
        /// </param>
        /// <param name="trackEntity">
        /// A <see cref="MkvTrackEntity"/>
        /// </param>
        public void ReadVideo(long videoLen, ref MkvTrackEntity trackEntity)
        {
            string mkvElement = "";
            long lenElement = 0;
            byte[] tmpBuffer;

            MkvVideoEntity mve = new MkvVideoEntity();

            // Set end of Video
            long endVideo = streamPosition + videoLen - 1;

            // Loop for all video sub sections
            while (streamPosition < endVideo)
            {

                // Read elememt and len
                mkvElement = ReadElement();
                lenElement = long.Parse(GetVInt(ReadElement()),System.Globalization.NumberStyles.AllowHexSpecifier);

                // Debug
                log.Info(utils.GetRow(mkvElement, lenElement, streamPosition));

                if (mkvElement == MkvConstants.Header_VIDEO_PIXW)
                {
                    // WIDTH
                    tmpBuffer = new byte[Convert.ToInt32(lenElement)];
                    ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
                    streamPosition += lenElement;

                    mve.PixelWidth = int.Parse(byteMan.GetHexFromBytes(tmpBuffer), System.Globalization.NumberStyles.AllowHexSpecifier);

                }
                else if (mkvElement == MkvConstants.Header_VIDEO_PIXH)
                {
                    // HEIGHT
                    tmpBuffer = new byte[Convert.ToInt32(lenElement)];
                    ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
                    streamPosition += lenElement;

                    mve.PixelHeight = int.Parse(byteMan.GetHexFromBytes(tmpBuffer), System.Globalization.NumberStyles.AllowHexSpecifier);

                }
                else
                {
                    // Skip section
                    streamPosition += lenElement;
                    ifs.Seek(lenElement, SeekOrigin.Current);

                }
            }

            trackEntity.Video.Add(mve);
        }
コード例 #3
0
        public void ReadAudio(long audioLen, ref MkvTrackEntity trackEntity)
        {
            string mkvElement = "";
            long lenElement = 0;
            byte[] tmpBuffer;

            MkvAudioEntity mae = new MkvAudioEntity();

            // Set end of Video
            long endAudio = streamPosition + audioLen - 1;

            // Loop for all audio sub sections
            while (streamPosition < endAudio)
            {

                // Read elememt and len
                mkvElement = ReadElement();
                lenElement = long.Parse(GetVInt(ReadElement()),System.Globalization.NumberStyles.AllowHexSpecifier);

                // Debug
                log.Info(utils.GetRow(mkvElement, lenElement, streamPosition));

                if (mkvElement == MkvConstants.Header_AUDIO_FREQ)
                {
                    // FREQUENCY
                    tmpBuffer = new byte[Convert.ToInt32(lenElement)];
                    ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
                    streamPosition += lenElement;

                    tmpBuffer = byteMan.swapByte(tmpBuffer);
                    mae.Frequency = BitConverter.ToSingle(tmpBuffer,0);

                }
                else if (mkvElement == MkvConstants.Header_AUDIO_CHAN)
                {
                    // CHANNELS
                    tmpBuffer = new byte[Convert.ToInt32(lenElement)];
                    ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
                    streamPosition += lenElement;

                    mae.Channels = Convert.ToInt32(tmpBuffer[0]);

                }
                else
                {
                    // Skip section
                    streamPosition += lenElement;
                    ifs.Seek(lenElement, SeekOrigin.Current);

                }
            }

            trackEntity.Audio.Add(mae);
        }