Exemplo n.º 1
0
        /// <summary>
        /// MPエントリの読み出し
        /// </summary>
        /// <param name="buffer"></param>
        /// <param name="offsetStart">オフセット基準位置</param>
        /// <param name="index"></param>
        /// <param name="endian"></param>
        /// <returns></returns>
        private MPEntryValue[] DecodeMPEntries(byte[] buffer, int offsetStart, MPIndexIFD index, Endian endian)
        {
            int offset = offsetStart + (int)index.MPEntry.OffsetUInt32;

            MPEntryValue[] mpEntries = new MPEntryValue[index.NumberOfImages.OffsetUInt32];
            for (int i = 0; i < mpEntries.Length; i++)
            {
                mpEntries[i] = new MPEntryValue(buffer, offset + (16 * i), endian);
            }

            return(mpEntries);
        }
Exemplo n.º 2
0
 /// <summary>
 /// 個別画像ユニークIDリストの読み出し
 /// </summary>
 /// <param name="buffer"></param>
 /// <param name="offsetStart">オフセット基準位置</param>
 /// <param name="index"></param>
 /// <param name="endian"></param>
 /// <returns></returns>
 private UniqueID[] DecodeUniqueIDs(byte[] buffer, int offsetStart, MPIndexIFD index, Endian endian)
 {
     UniqueID[] uids = null;
     if (index.ImageUIDList != null)
     {
         uids = new UniqueID[index.NumberOfImages.OffsetUInt32];
         int offset = offsetStart + (int)index.ImageUIDList.OffsetUInt32;
         for (int i = 0; i < uids.Length; i++)
         {
             uids[0] = new UniqueID(buffer, offset + (33 * i), endian);
         }
     }
     return(uids);
 }
Exemplo n.º 3
0
        /// <summary>
        /// MPインデックスIFDの読み出し
        /// </summary>
        /// <param name="buffer"></param>
        /// <param name="o">オフセット</param>
        /// <param name="endian"></param>
        /// <returns></returns>
        private MPIndexIFD DecodeMPIndexIFD(byte[] buffer, int o, int offsetStart, Endian endian)
        {
            // バイト列から読み込み
            MPIndexIFD index = new MPIndexIFD
            {
                Count          = BitConverterEx.ToUInt16(buffer, o, endian),
                MPFVersion     = new IFD(buffer, o + 2, offsetStart, endian),
                NumberOfImages = new IFD(buffer, o + 14, offsetStart, endian),
                MPEntry        = new IFD(buffer, o + 26, offsetStart, endian),
            };

            // タグ番号をチェック
            if (index.MPFVersion.Tag != 45056)
            {
                throw new Exception("MPFVersionのデコードに失敗しました");
            }
            if (index.NumberOfImages.Tag != 45057)
            {
                throw new Exception("NumberOfImagesのデコードに失敗しました");
            }
            if (index.MPEntry.Tag != 45058)
            {
                throw new Exception("MPEntryのデコードに失敗しました");
            }

            // 個別画像ユニークIDリスト以下は省略されて存在しないかもしれない
            if (index.Count > 3)
            {
                index.ImageUIDList  = new IFD(buffer, o + 38, offsetStart, endian);
                index.TotalFrames   = new IFD(this.buffer, o + 50, offsetStart, endian);
                index.NextIFDOffset = BitConverterEx.ToUInt32(buffer, o + 62, endian);
            }
            else if (index.Count == 3)
            {
                index.ImageUIDList  = null;
                index.TotalFrames   = null;
                index.NextIFDOffset = BitConverterEx.ToUInt32(buffer, o + 38, endian);
            }
            else
            {
                throw new InvalidOperationException("MPインデックスIFDの解析に失敗しました");
            }

            return(index);
        }