Exemplo n.º 1
0
        /*
        private bool LoadSubFiles(SFFHEADER header, Stream source)
        {
            if (mSubHeaders != null)
                mSubHeaders.Clear();

            if ((header.NumberOfGroups == 0) && (header.NumberOfImage == 0))
                return true;

            if ((header.SubHeaderFileOffset == 0))
                return false;
            if (source == null || source.Length <= 0)
                return false;

            long offset = (long)header.SubHeaderFileOffset;
            if (offset < 0)
                return false;
            if (source.Seek(offset, SeekOrigin.Begin) != offset)
                return false;

            SFFSUBHEADER subHeader = new SFFSUBHEADER();
            int subHeaderSize = Marshal.SizeOf(subHeader);
            for (int i = 0; i < header.NumberOfImage; ++i)
            {
                if (subHeaderSize + source.Position > source.Length)
                {
                    // File is Eof
                    return true;
                }
                subHeader = SFFSUBHEADER.LoadFromStream(source);
                if (subHeader.LenghtOfSubheader > 0)
                {
                    if (subHeader.LenghtOfSubheader >= source.Length)
                        return true;

                    source.Seek((long)subHeader.LenghtOfSubheader, SeekOrigin.Current);
                }

                SubHeaders.Add(subHeader);
            }

            bool ret = mSubHeaders != null && (int)header.NumberOfImage == mSubHeaders.Count;
            return ret;
        }*/

		private bool LoadSubFiles(SFFHEADER header, byte[] source)
		{
			if ((header.NumberOfGroups == 0) && (header.NumberOfImage == 0))
				return true;
	
			if ((header.SubHeaderFileOffset == 0))
				return false;
			if (!LoadSubFiles((int)header.SubHeaderFileOffset, source))
				return false;
			bool ret = (int)header.NumberOfImage == mSubHeaders.Count;
            return ret;
		}
Exemplo n.º 2
0
		private bool Load(byte[] bytes)
		{
			mPcxDataMap.Clear();
			if (mSubHeaders != null)
				mSubHeaders.Clear();
			if ((bytes == null) || (bytes.Length <= 0))
			{
				mIsVaild = false;
				return false;
			}

            // 判断是否是v2的文件
            if (bytes.Length < 16)
            {
                mIsVaild = false;
                return false;
            }

            byte v1 = bytes[15];
            byte v2;
            byte v3;
            byte v4;
            if (v1 == 2)
            {
				
                SFFHEADERv2 header = new SFFHEADERv2();
                int headerSize = Marshal.SizeOf(header);
                IntPtr headerBuffer = Marshal.AllocHGlobal(headerSize);
                try
                {
                    Marshal.Copy(bytes, 0, headerBuffer, headerSize);
                    header = (SFFHEADERv2)Marshal.PtrToStructure(headerBuffer, typeof(SFFHEADERv2));
                }
                finally
                {
                    Marshal.FreeHGlobal(headerBuffer);
                }
				MemoryStream stream = new MemoryStream (bytes);
				try
				{
				//	SFFHEADERv2 header = SFFHEADERv2.LoadFromStream (stream);

					int comp = string.Compare(header.signature, _cElecbyteSpr, true);
					if (comp != 0)
                    	return false;

                	v1 = header.verlo2;
                	v2 = header.verlo;
                	v3 = header.verhi2;
                	v4 = header.verhi;

					if (!LoadSubFilesV2(header, stream))
                    	return false;
				} finally {
					stream.Close ();
					stream.Dispose ();
				}
            }
            else if (v1 == 1)
            {

                SFFHEADER header = new SFFHEADER();
                int headerSize = Marshal.SizeOf(header);
                IntPtr headerBuffer = Marshal.AllocHGlobal(headerSize);
                try
                {
                    Marshal.Copy(bytes, 0, headerBuffer, headerSize);
                    header = (SFFHEADER)Marshal.PtrToStructure(headerBuffer, typeof(SFFHEADER));
                }
                finally
                {
                    Marshal.FreeHGlobal(headerBuffer);
                }

                if (string.Compare(header.signature, _cElecbyteSpr, true) != 0)
                    return false;

                v1 = header.verlo2;
                v2 = header.verlo;
                v3 = header.verhi2;
                v4 = header.verhi;

                if (v1 > 1)
                {
                    Debug.LogErrorFormat("sff file not supoort v{0:D}.{1:D}.{2:D}.{3:D}", v1, v2, v3, v4);
                    return false;
                }

              //  MemoryStream stream = new MemoryStream(bytes);
                try
                {
                    if (!LoadSubFiles(header, bytes))
                        return false;
                   // if (!LoadSubFiles(header, stream))
                  //      return false;

                    if (!LoadPcxs(header, bytes))
                        return false;
                } finally
                {
           //         stream.Close();
           //         stream.Dispose();
                }
            } else
            {
                Debug.LogErrorFormat("sff file not supoort v{0:D}", v1);
                return false;
            }

            if (v1 > 1)
            {
                Debug.LogErrorFormat("sff file not supoort v{0:D}.{1:D}.{2:D}.{3:D}", v1, v2, v3, v4);
                return false;
            }

			mIsVaild = true;
			return true;
		}
Exemplo n.º 3
0
        private bool LoadPcxs(SFFHEADER sffHeader, byte[] source)
		{
			if ((source == null) || (source.Length <= 0))
				return false;
			if ((mSubHeaders == null) || (mSubHeaders.Count <= 0))
				return true;

			bool ret = true;
			int offset = (int)sffHeader.SubHeaderFileOffset;
			for (int i = 0; i < mSubHeaders.Count; ++i)
			{
				SFFSUBHEADER header;
				if (!GetSubHeader(i, out header))
				{
					ret = false;
					break;
				}

				KeyValuePair<uint, uint> key = new KeyValuePair<uint, uint>((uint)header.GroubNumber, (uint)header.ImageNumber);
				if (mPcxDataMap.ContainsKey(key))
				{
					offset = (int)header.NextSubheaderFileOffset;
					if (offset == 0 || offset >= source.Length)
						break;
					continue;
				}

                /*
                // 檢查indexPrevious
                if (header.LenghtOfSubheader == 0 && header.IndexOfPrevious != 0)
                {
                    offset = (int)header.NextSubheaderFileOffset;
                    if (offset == 0 || offset >= source.Length)
                        break;
                    continue;
                }
                 * */

				offset += Marshal.SizeOf(header);
				KeyValuePair<PCXHEADER, PCXDATA> value;
#if _USE_NEW_PCX
                Stream stream = null;
                try
                {
                    if (!LoadPcx2(offset, header, source, ref stream, out value))
#else
				if (!LoadPcx(offset, header, source, out value))
#endif
                    {
                        Debug.LogErrorFormat("LoadPcxs: index = {0} error", i);
                        ret = false;
                        break;
                    }
#if _USE_NEW_PCX
                } finally
                {
                    if (stream != null)
                    {
                        stream.Close();
                        stream.Dispose();
                        stream = null;
                    }
                }
#endif


				mPcxDataMap.Add(key, value);

				offset = (int)header.NextSubheaderFileOffset;
				if (offset == 0 || offset >= source.Length)
					break;
			}

			return ret;
		}