cirros-testvm/src-cirros/buildroot-2015.05/package/fbv/0004-fix-bgr555.patch

   1 [PATCH] fbv: support bgr555 format
   2
   3 Signed-off-by: Josh.Wu <josh.wu@atmel.com>
   4 diff -Naur fbv-1.0b-ori/fb_display.c fbv-1.0b/fb_display.c
   5 --- fbv-1.0b-ori/fb_display.c   2010-04-02 09:38:15.000000000 +0800
   6 +++ fbv-1.0b/fb_display.c       2010-04-01 18:54:15.000000000 +0800
   7 @@ -297,6 +297,14 @@
   8          ((b >> 3) & 31)        );
   9  }
  10
  11 +inline static unsigned short make15color_bgr(unsigned char r, unsigned char g, unsigned char b)
  12 +{
  13 +    return (
  14 +       (((b >> 3) & 31) << 10) |
  15 +       (((g >> 3) & 31) << 5)  |
  16 +        ((r >> 3) & 31)        );
  17 +}
  18 +
  19  inline static unsigned short make16color(unsigned char r, unsigned char g, unsigned char b)
  20  {
  21      return (
  22 @@ -313,6 +321,14 @@
  23      u_int16_t *s_fbbuff;
  24      u_int32_t *i_fbbuff;
  25
  26 +    int is_bgr555 = 0;
  27 +    struct fb_var_screeninfo var;
  28 +    getVarScreenInfo(fh, &var);
  29 +    if(var.red.offset == 0 &&
  30 +       var.green.offset == 5 &&
  31 +       var.blue.offset == 10)
  32 +       is_bgr555 = 1;
  33 +
  34      switch(bpp)
  35      {
  36         case 8:
  37 @@ -325,15 +341,23 @@
  38         case 15:
  39             *cpp = 2;
  40             s_fbbuff = (unsigned short *) malloc(count * sizeof(unsigned short));
  41 -           for(i = 0; i < count ; i++)
  42 -               s_fbbuff[i] = make15color(rgbbuff[i*3], rgbbuff[i*3+1], rgbbuff[i*3+2]);
  43 +           if(is_bgr555)
  44 +               for(i = 0; i < count ; i++)
  45 +                   s_fbbuff[i] = make15color_bgr(rgbbuff[i*3], rgbbuff[i*3+1], rgbbuff[i*3+2]);
  46 +           else
  47 +               for(i = 0; i < count ; i++)
  48 +                   s_fbbuff[i] = make15color(rgbbuff[i*3], rgbbuff[i*3+1], rgbbuff[i*3+2]);
  49             fbbuff = (void *) s_fbbuff;
  50             break;
  51         case 16:
  52             *cpp = 2;
  53             s_fbbuff = (unsigned short *) malloc(count * sizeof(unsigned short));
  54 -           for(i = 0; i < count ; i++)
  55 -               s_fbbuff[i] = make16color(rgbbuff[i*3], rgbbuff[i*3+1], rgbbuff[i*3+2]);
  56 +           if(is_bgr555)
  57 +               for(i = 0; i < count ; i++)
  58 +                   s_fbbuff[i] = make15color_bgr(rgbbuff[i*3], rgbbuff[i*3+1], rgbbuff[i*3+2]);
  59 +           else
  60 +               for(i = 0; i < count ; i++)
  61 +                   s_fbbuff[i] = make16color(rgbbuff[i*3], rgbbuff[i*3+1], rgbbuff[i*3+2]);
  62             fbbuff = (void *) s_fbbuff;
  63             break;
  64         case 24: