PSDFile.cs

   1 using System;\r
   2 using System.Collections.Generic;\r
   3 using System.Drawing;\r
   4 using System.Drawing.Imaging;\r
   5 using System.IO;\r
   6 using System.Text;\r
   7 using System.Runtime.InteropServices;\r
   8 \r
   9 namespace Tso2MqoGui\r
  10 {\r
  11     using DWORD = UInt32;\r
  12     using LONG  = Int32;\r
  13     using WORD  = UInt16;\r
  14 \r
  15     public struct BITMAPINFOHEADER\r
  16     {\r
  17         public DWORD  biSize; \r
  18         public LONG   biWidth; \r
  19         public LONG   biHeight; \r
  20         public WORD   biPlanes; \r
  21         public WORD   biBitCount; \r
  22         public DWORD  biCompression; \r
  23         public DWORD  biSizeImage; \r
  24         public LONG   biXPelsPerMeter; \r
  25         public LONG   biYPelsPerMeter; \r
  26         public DWORD  biClrUsed; \r
  27         public DWORD  biClrImportant; \r
  28     };\r
  29 \r
  30     public unsafe class PSDFile\r
  31     {\r
  32         internal Image  image;\r
  33 \r
  34         public PSDFile(string file)\r
  35         {\r
  36             image   = LoadImage(file);\r
  37         }\r
  38 \r
  39         public static Bitmap LoadImage(string file)\r
  40         {\r
  41             FileStream  fs  = File.OpenRead(file);\r
  42             byte[]      buf = new byte[fs.Length];\r
  43             fs.Read(buf, 0, buf.Length);\r
  44             \r
  45             IntPtr  pHBInfo = IntPtr.Zero;\r
  46             IntPtr  pHBm    = IntPtr.Zero;\r
  47             Bitmap  bmp     = null;\r
  48 \r
  49             fixed(byte* p= &buf[0])\r
  50             {\r
  51                 int rc  = GetPicture(p, buf.Length, 1, out pHBInfo, out pHBm, null, 0);\r
  52 \r
  53                 if(rc != 0)\r
  54                     return null;\r
  55 \r
  56                 BITMAPINFOHEADER*   pInfo   = (BITMAPINFOHEADER*)LocalLock(pHBInfo);\r
  57                 byte*               pBM     = (byte*)LocalLock(pHBm);\r
  58                 int                 s       = 0;\r
  59                 Rectangle           r       = new Rectangle(0, 0, pInfo->biWidth, pInfo->biHeight);\r
  60                 bmp                         = new Bitmap(pInfo->biWidth, pInfo->biHeight, PixelFormat.Format24bppRgb);\r
  61                 BitmapData          data    = bmp.LockBits(r, ImageLockMode.WriteOnly, PixelFormat.Format24bppRgb);\r
  62                 byte*               dst     = (byte*)data.Scan0;\r
  63                 dst                         +=data.Stride * data.Height;\r
  64 \r
  65                 switch(pInfo->biBitCount)\r
  66                 {\r
  67                 case  8:    break;\r
  68                 case 16:    break;\r
  69                 case 24:\r
  70                     for(uint y= 0; y < pInfo->biHeight; ++y)\r
  71                     {\r
  72                         dst             -=data.Stride;\r
  73 \r
  74                         for(uint x= 0; x < pInfo->biWidth; ++x)\r
  75                         {\r
  76                             dst[x*3+0]  = pBM[s++];\r
  77                             dst[x*3+1]  = pBM[s++];\r
  78                             dst[x*3+2]  = pBM[s++];\r
  79                         }\r
  80                     }\r
  81                     break;\r
  82 \r
  83                 case 32:\r
  84                     for(uint y= 0; y < pInfo->biHeight; ++y)\r
  85                     {\r
  86                         dst             -=data.Stride;\r
  87 \r
  88                         for(uint x= 0; x < pInfo->biWidth; ++x)\r
  89                         {\r
  90                             dst[x*3+0]  = pBM[s++];\r
  91                             dst[x*3+1]  = pBM[s++];\r
  92                             dst[x*3+2]  = pBM[s++];\r
  93                             ++s;\r
  94                         }\r
  95                     }\r
  96                     break;\r
  97                 }\r
  98 \r
  99                 bmp.UnlockBits(data);\r
 100 \r
 101                 LocalUnlock(pHBInfo);\r
 102                 LocalUnlock(pHBm);\r
 103 \r
 104                 return bmp;\r
 105             }\r
 106         }\r
 107 \r
 108         [DllImport("kernel32.dll")]\r
 109         public extern static void* LocalLock(IntPtr handle);\r
 110 \r
 111         [DllImport("kernel32.dll")]\r
 112         public extern static int LocalUnlock(IntPtr handle);\r
 113 \r
 114         [DllImport("ifpsd.spi")]\r
 115         public extern static int GetPicture(byte* file, int len, uint flag, out IntPtr pHBInfo, out IntPtr pHBm, void* lpPrgressCallback, uint lData); \r
 116 \r
 117       //[DllImport("axpsd.spi")]\r
 118       //public extern static int GetPicture(string file, int len, uint flag, out IntPtr pHBInfo, out IntPtr pHBm, void* lpPrgressCallback, uint lData); \r
 119     }\r
 120 }\r