package/graphic/fbv/bigendian.patch

   1 # --- T2-COPYRIGHT-NOTE-BEGIN ---
   2 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
   3 #
   4 # T2 SDE: package/.../fbv/bigendian.patch
   5 # Copyright (C) 2007 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 This is a bit hacky as the endianess of the frame-buffer is
  18 not tied to the CPU. But the fbv code sucks anyway ... Let's
  19 see this as basic fixup and use miniescreen for the same task,
  20 otherwise ...
  21
  22   - Rene Rebe <rene@exactcode.de>
  23
  24 --- fbv-1.0b/fb_display.c       2004-09-07 12:09:43.000000000 +0000
  25 +++ fbv-1.0b-fixed/fb_display.c 2007-03-07 16:50:59.243785153 +0000
  26 @@ -293,17 +293,29 @@
  27  inline static unsigned short make15color(unsigned char r, unsigned char g, unsigned char b)
  28  {
  29      return (
  30 +#if __BYTE_ORDER != __BIG_ENDIAN
  31         (((r >> 3) & 31) << 10) |
  32         (((g >> 3) & 31) << 5)  |
  33          ((b >> 3) & 31)        );
  34 +#else
  35 +        ((r >> 3) & 31)       |
  36 +       (((g >> 3) & 31) << 5)  |
  37 +       (((b >> 3) & 31) << 10) );
  38 +#endif
  39  }
  40
  41  inline static unsigned short make16color(unsigned char r, unsigned char g, unsigned char b)
  42  {
  43      return (
  44 +#if __BYTE_ORDER != __BIG_ENDIAN
  45         (((r >> 3) & 31) << 11) |
  46         (((g >> 2) & 63) << 5)  |
  47          ((b >> 3) & 31)        );
  48 +#else
  49 +        ((r >> 3) & 31)        |
  50 +       (((g >> 3) & 31) << 5)  |
  51 +       (((b >> 3) & 31) << 10) );
  52 +#endif
  53  }
  54
  55  void* convertRGB2FB(int fh, unsigned char *rgbbuff, unsigned long count, int bpp, int *cpp)
  56 @@ -312,7 +324,6 @@
  57      void *fbbuff = NULL;
  58         u_int8_t  *c_fbbuff;
  59      u_int16_t *s_fbbuff;
  60 -    u_int32_t *i_fbbuff;
  61
  62      switch(bpp)
  63      {
  64 @@ -339,13 +350,25 @@
  65             break;
  66         case 24:
  67         case 32:
  68 -           *cpp = 4;
  69 -           i_fbbuff = (unsigned int *) malloc(count * sizeof(unsigned int));
  70 -           for(i = 0; i < count ; i++)
  71 -               i_fbbuff[i] = ((rgbbuff[i*3] << 16) & 0xFF0000) |
  72 -                           ((rgbbuff[i*3+1] << 8) & 0xFF00) |
  73 -                           (rgbbuff[i*3+2] & 0xFF);
  74 -           fbbuff = (void *) i_fbbuff;
  75 +           *cpp = bpp/8;
  76 +           c_fbbuff = (unsigned char *) malloc(count * *cpp);
  77 +           fbbuff = (void *) c_fbbuff;
  78 +           for(i = 0; i < count ; i++) {
  79 +#if __BYTE_ORDER != __BIG_ENDIAN
  80 +               c_fbbuff[0] = rgbbuff[i*3];
  81 +               c_fbbuff[1] = rgbbuff[i*3+1];
  82 +               c_fbbuff[2] = rgbbuff[i*3+2];
  83 +               if (*cpp == 4) c_fbbuff[3] = 0;
  84 +               c_fbbuff += *cpp;
  85 +#else
  86 +               c_fbbuff += *cpp;
  87 +               c_fbbuff[-1] = rgbbuff[i*3];
  88 +               c_fbbuff[-2] = rgbbuff[i*3+1];
  89 +               c_fbbuff[-3] = rgbbuff[i*3+2];
  90 +               if (*cpp == 4) c_fbbuff[-4] = 0;
  91 +
  92 +#endif
  93 +           }
  94             break;
  95         default:
  96             fprintf(stderr, "Unsupported video mode! You've got: %dbpp\n", bpp);