src/subpic/color_conv_table.h

   1 /************************************************************************/
   2 /* author:      xy                                                      */
   3 /* date:        20110914                                                */
   4 /* description: color table for yuv rgb convertion,                     */
   5 /*              support both bt.601 and bt.709                          */
   6 /************************************************************************/
   7 #ifndef __COLOR_CONV_TABLE_H_53D078BB_BBA1_441B_9728_67E29A1CB521__
   8 #define __COLOR_CONV_TABLE_H_53D078BB_BBA1_441B_9728_67E29A1CB521__
   9
  10 struct ColorConvTable
  11 {
  12     enum YUV_Type
  13     {
  14         NONE,
  15         BT601,
  16         BT709,
  17     };
  18
  19     static const ColorConvTable* GetColorConvTable(const YUV_Type& yuv_type);
  20     static void DestroyColorConvTable(const YUV_Type& yuv_type);
  21     static YUV_Type SetDefaultYUVType(const YUV_Type& yuv_type) { return s_default_yuv_type = yuv_type; }
  22     static YUV_Type GetDefaultYUVType() { return s_default_yuv_type; };
  23     static const ColorConvTable* GetDefaultColorConvTable() { return GetColorConvTable(s_default_yuv_type); }
  24
  25     YUV_Type yuv_type;
  26
  27     unsigned char Clip_base[256*3];
  28     const unsigned char* Clip;
  29
  30     int c2y_cyb;
  31     int c2y_cyg;
  32     int c2y_cyr;
  33     int c2y_cu;
  34     int c2y_cv;
  35
  36     int c2y_yb[256];
  37     int c2y_yg[256];
  38     int c2y_yr[256];
  39
  40     int y2c_cbu;
  41     int y2c_cgu;
  42     int y2c_cgv;
  43     int y2c_crv;
  44     int y2c_bu[256];
  45     int y2c_gu[256];
  46     int y2c_gv[256];
  47     int y2c_rv[256];
  48
  49     int cy_cy;
  50     int cy_cy2;
  51
  52 private:
  53     ColorConvTable(){}
  54
  55     bool InitColorConvTable(const YUV_Type& yuv_type);
  56
  57     void InitBT601ColorConvTable();
  58
  59     void InitBT709ColorConvTable();
  60
  61     void ColorConvInit();
  62
  63     static ColorConvTable* s_color_table_bt601;
  64     static ColorConvTable* s_color_table_bt709;
  65     static YUV_Type s_default_yuv_type;
  66 };
  67
  68 #endif // end of __COLOR_CONV_TABLE_H_53D078BB_BBA1_441B_9728_67E29A1CB521__