package/graphic/fbgrab/565-fixup.patch

   1 # --- T2-COPYRIGHT-NOTE-BEGIN ---
   2 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
   3 #
   4 # T2 SDE: package/.../fbgrab/565-fixup.patch
   5 # Copyright (C) 2004 - 2005 The T2 SDE Project
   6 #
   7 # More information can be found in the files COPYING and README.
   8 #
   9 # This patch file is dual-licensed. It is available under the license the
  10 # patched project is licensed under, as long as it is an OpenSource license
  11 # as defined at http://www.opensource.org/ (e.g. BSD, X11) or under the terms
  12 # of the GNU General Public License as published by the Free Software
  13 # Foundation; either version 2 of the License, or (at your option) any later
  14 # version.
  15 # --- T2-COPYRIGHT-NOTE-END ---
  16
  17 Fixed fbgrab for big-endian systems, including a code cleanup on the way.
  18
  19   - Rene Rebe
  20
  21 --- fbgrab-1.0/fbgrab.c 2002-04-15 22:22:54.000000000 +0200
  22 +++ fbgrab-1.0-fixed/fbgrab.c   2004-09-05 16:12:42.874276472 +0200
  23 @@ -166,15 +166,17 @@
  24
  25      for (i=0; i < (unsigned int) height*width*2; i+=2)
  26      {
  27 -       /* BLUE  = 0 */
  28 -       outbuffer[(i<<1)+0] = (inbuffer[i] & 0x1f) << 3;
  29 -       /* GREEN = 1 */
  30 -        outbuffer[(i<<1)+1] = (((inbuffer[i+1] & 0x7) << 3) |
  31 -                            (inbuffer[i] & 0xE0) >> 5) << 2;
  32 -        /* RED   = 2 */
  33 -       outbuffer[(i<<1)+2] = (inbuffer[i+1] & 0xF8);
  34 -       /* ALPHA = 3 */
  35 -       outbuffer[(i<<1)+3] = '\0';
  36 +       int16_t v =
  37 +#ifdef __BIG_ENDIAN__
  38 +               (inbuffer[i] << 8) + inbuffer[i+1];
  39 +#else
  40 +               (inbuffer[i+1] << 8) + inbuffer[i];
  41 +#endif
  42 +
  43 +       outbuffer[(i<<1)+0] = (v << 3) & 0xf8; /* B */
  44 +       outbuffer[(i<<1)+1] = (v >> 3) & 0xfc; /* G */
  45 +       outbuffer[(i<<1)+2] = (v >> 8) & 0xf8; /* R */
  46 +       outbuffer[(i<<1)+3] = 0; /* A */
  47      }
  48  }
  49