public static AviStream ParseStreamList(ByteVector data)
 {
     int num2;
     if (data == null)
     {
         throw new ArgumentNullException("data");
     }
     if (!data.StartsWith("strl"))
     {
         return null;
     }
     AviStream stream = null;
     for (int i = 4; (i + 8) < data.Count; i += num2 + 8)
     {
         ByteVector id = data.Mid(i, 4);
         num2 = (int) data.Mid(i + 4, 4).ToUInt(false);
         if ((id == "strh") && (stream == null))
         {
             AviStreamHeader header = new AviStreamHeader(data, i + 8);
             if (header.Type == "vids")
             {
                 stream = new AviVideoStream(header);
             }
             else if (header.Type == "auds")
             {
                 stream = new AviAudioStream(header);
             }
         }
         else if (stream != null)
         {
             stream.ParseItem(id, data, i + 8, num2);
         }
     }
     return stream;
 }
Esempio n. 2
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 public static AviStream ParseStreamList (ByteVector data)
 {
    if (data == null)
       throw new ArgumentNullException ("data");
    
    AviStream stream = null;
    int pos = 4;
    
    if (data.StartsWith ("strl"))
       while (pos + 8 < data.Count)
       {
          ByteVector id = data.Mid (pos, 4);
          int block_length = (int) data.Mid (pos + 4, 4).ToUInt (false);
          
          if (id == "strh" && stream == null)
          {
             AviStreamHeader stream_header = new AviStreamHeader (data, pos + 8);
             if (stream_header.Type == "vids")
                stream = new AviVideoStream (stream_header);
             else if (stream_header.Type == "auds")
                stream = new AviAudioStream (stream_header);
          }
          else if (stream != null)
             stream.ParseItem (id, data, pos + 8, block_length);
          
          pos += block_length + 8;
       }
    
    return stream;
 }
Esempio n. 3
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        /// <summary>
        ///    Parses a raw AVI stream list and returns the stream
        ///    information.
        /// </summary>
        /// <param name="data">
        ///    A <see cref="ByteVector" /> object containing raw stream
        ///    list.
        /// </param>
        /// <returns>
        ///    A <see cref="AviStream" /> object containing stream
        ///    information.
        /// </returns>
        public static AviStream ParseStreamList(ByteVector data)
        {
            if (data == null)
            {
                throw new ArgumentNullException("data");
            }


            if (!data.StartsWith("strl"))
            {
                return(null);
            }

            AviStream stream = null;
            int       pos    = 4;

            while (pos + 8 < data.Count)
            {
                ByteVector id           = data.Mid(pos, 4);
                int        block_length = (int)data.Mid(pos + 4, 4)
                                          .ToUInt(false);

                if (id == "strh" && stream == null)
                {
                    AviStreamHeader stream_header =
                        new AviStreamHeader(data, pos + 8);
                    if (stream_header.Type == "vids")
                    {
                        stream = new AviVideoStream(
                            stream_header);
                    }
                    else if (stream_header.Type == "auds")
                    {
                        stream = new AviAudioStream(
                            stream_header);
                    }
                }
                else if (stream != null)
                {
                    stream.ParseItem(id, data, pos + 8, block_length);
                }

                pos += block_length + 8;
            }

            return(stream);
        }