lib/picviewer/fb_display.h

   1 #ifndef __pictureviewer_fbdisplay__
   2 #define __pictureviewer_fbdisplay__
   3
   4 ///// YUV framebuffer stuff
   5 #define BPP_RED   8
   6 #define BPP_GREEN 8
   7 #define BPP_BLUE  8
   8
   9 #define NR_RED   (1<<(BPP_RED))
  10 #define NR_GREEN (1<<(BPP_GREEN))
  11 #define NR_BLUE  (1<<(BPP_BLUE))
  12
  13 #define lut_r_y (lut + 0 * (NR_RED + NR_GREEN + NR_BLUE) + 0)
  14 #define lut_g_y (lut + 0 * (NR_RED + NR_GREEN + NR_BLUE) + NR_RED)
  15 #define lut_b_y (lut + 0 * (NR_RED + NR_GREEN + NR_BLUE) + NR_RED + NR_GREEN)
  16 #define lut_r_u (lut + 1 * (NR_RED + NR_GREEN + NR_BLUE) + 0)
  17 #define lut_g_u (lut + 1 * (NR_RED + NR_GREEN + NR_BLUE) + NR_RED)
  18 #define lut_b_u (lut + 1 * (NR_RED + NR_GREEN + NR_BLUE) + NR_RED + NR_GREEN)
  19 #define lut_r_v (lut + 2 * (NR_RED + NR_GREEN + NR_BLUE) + 0)
  20 #define lut_g_v (lut + 2 * (NR_RED + NR_GREEN + NR_BLUE) + NR_RED)
  21 #define lut_b_v (lut + 2 * (NR_RED + NR_GREEN + NR_BLUE) + NR_RED + NR_GREEN)
  22 extern unsigned short lut[3 * (NR_RED + NR_GREEN + NR_BLUE) ];
  23
  24 inline int Y(int R, int G, int B)
  25 {
  26         return 66 * R + 129 * G + 25 * B;
  27 }
  28
  29 inline int U(int R, int G, int B)
  30 {
  31         return -38 * R - 74 * G + 112 * B;
  32 }
  33
  34 inline int V(int R, int G, int B)
  35 {
  36         return 112 * R - 94 * G - 18 * B;
  37 }
  38 extern void * convertRGB2FB(unsigned char *rgbbuff, unsigned long count, int bpp, int *cpp);
  39 extern void fb_display(unsigned char *rgbbuff, int x_size, int y_size, int x_pan, int y_pan, int x_offs, int y_offs);
  40 extern void getCurrentRes(int *x, int *y);
  41 #endif