xbmc/video/Teletext.h

   1 /*
   2  *  Copyright (C) 2005-2018 Team Kodi
   3  *  This file is part of Kodi - https://kodi.tv
   4  *
   5  *  SPDX-License-Identifier: GPL-2.0-or-later
   6  *  See LICENSES/README.md for more information.
   7  */
   8
   9 #pragma once
  10
  11 #include "TeletextDefines.h"
  12 #include "guilib/GUITexture.h"
  13 #include "utils/ColorUtils.h"
  14
  15 // stuff for freetype
  16 #include <ft2build.h>
  17
  18 #ifdef TARGET_WINDOWS_STORE
  19 #define generic GenericFromFreeTypeLibrary
  20 #endif
  21
  22 #include FT_FREETYPE_H
  23 #include FT_CACHE_H
  24 #include FT_CACHE_SMALL_BITMAPS_H
  25
  26 class CAction;
  27
  28 typedef enum /* object type */
  29 {
  30   OBJ_PASSIVE,
  31   OBJ_ACTIVE,
  32   OBJ_ADAPTIVE
  33 } tObjType;
  34
  35 class CTeletextDecoder
  36 {
  37 public:
  38   CTeletextDecoder();
  39   virtual ~CTeletextDecoder(void);
  40
  41   bool NeedRendering() { return m_updateTexture; }
  42   void RenderingDone() { m_updateTexture = false; }
  43   UTILS::COLOR::Color* GetTextureBuffer()
  44   {
  45     return m_TextureBuffer + (m_RenderInfo.Width * m_YOffset);
  46   }
  47   int GetHeight() { return m_RenderInfo.Height; }
  48   int GetWidth() { return m_RenderInfo.Width; }
  49   bool InitDecoder();
  50   void EndDecoder();
  51   void RenderPage();
  52   bool HandleAction(const CAction &action);
  53
  54 private:
  55   void PageInput(int Number);
  56   void GetNextPageOne(bool up);
  57   void GetNextSubPage(int offset);
  58   bool IsSubtitlePage(int pageNumber) const;
  59   void SwitchZoomMode();
  60   void SwitchTranspMode();
  61   void SwitchHintMode();
  62   void ColorKey(int target);
  63   void StartPageCatching();
  64   void StopPageCatching();
  65   void CatchNextPage(int firstlineinc, int inc);
  66   void RenderCatchedPage();
  67   void DoFlashing(int startrow);
  68   void DoRenderPage(int startrow, int national_subset_bak);
  69   void Decode_BTT();
  70   void Decode_ADIP();
  71   int TopText_GetNext(int startpage, int up, int findgroup);
  72   void Showlink(int column, int linkpage);
  73   void CreateLine25();
  74   void RenderCharFB(int Char, TextPageAttr_t *Attribute);
  75   void RenderCharBB(int Char, TextPageAttr_t *Attribute);
  76   void CopyBB2FB();
  77   void SetFontWidth(int newWidth);
  78   int GetCurFontWidth();
  79   void SetPosX(int column);
  80   void ClearBB(UTILS::COLOR::Color Color);
  81   void ClearFB(UTILS::COLOR::Color Color);
  82   void FillBorder(UTILS::COLOR::Color Color);
  83   void FillRect(
  84       UTILS::COLOR::Color* buffer, int xres, int x, int y, int w, int h, UTILS::COLOR::Color Color);
  85   void DrawVLine(
  86       UTILS::COLOR::Color* lfb, int xres, int x, int y, int l, UTILS::COLOR::Color color);
  87   void DrawHLine(
  88       UTILS::COLOR::Color* lfb, int xres, int x, int y, int l, UTILS::COLOR::Color color);
  89   void FillRectMosaicSeparated(UTILS::COLOR::Color* lfb,
  90                                int xres,
  91                                int x,
  92                                int y,
  93                                int w,
  94                                int h,
  95                                UTILS::COLOR::Color fgcolor,
  96                                UTILS::COLOR::Color bgcolor,
  97                                int set);
  98   void FillTrapez(UTILS::COLOR::Color* lfb,
  99                   int xres,
 100                   int x0,
 101                   int y0,
 102                   int l0,
 103                   int xoffset1,
 104                   int h,
 105                   int l1,
 106                   UTILS::COLOR::Color color);
 107   void FlipHorz(UTILS::COLOR::Color* lfb, int xres, int x, int y, int w, int h);
 108   void FlipVert(UTILS::COLOR::Color* lfb, int xres, int x, int y, int w, int h);
 109   int ShapeCoord(int param, int curfontwidth, int curfontheight);
 110   void DrawShape(UTILS::COLOR::Color* lfb,
 111                  int xres,
 112                  int x,
 113                  int y,
 114                  int shapenumber,
 115                  int curfontwidth,
 116                  int fontheight,
 117                  int curfontheight,
 118                  UTILS::COLOR::Color fgcolor,
 119                  UTILS::COLOR::Color bgcolor,
 120                  bool clear);
 121   void RenderDRCS(
 122       int xres,
 123       unsigned char* s, /* pointer to char data, parity undecoded */
 124       UTILS::COLOR::Color* d, /* pointer to frame buffer of top left pixel */
 125       unsigned char* ax, /* array[0..12] of x-offsets, array[0..10] of y-offsets for each pixel */
 126       UTILS::COLOR::Color fgcolor,
 127       UTILS::COLOR::Color bgcolor);
 128   void RenderCharIntern(TextRenderInfo_t* RenderInfo, int Char, TextPageAttr_t *Attribute, int zoom, int yoffset);
 129   int RenderChar(
 130       UTILS::COLOR::Color* buffer, // pointer to render buffer, min. fontheight*2*xres
 131       int xres, // length of 1 line in render buffer
 132       int Char, // character to render
 133       int*
 134           pPosX, // left border for rendering relative to *buffer, will be set to right border after rendering
 135       int PosY, // vertical position of char in *buffer
 136       TextPageAttr_t* Attribute, // Attributes of Char
 137       bool zoom, // 1= character will be rendered in double height
 138       int curfontwidth, // rendering width of character
 139       int curfontwidth2, // rendering width of next character (needed for doublewidth)
 140       int fontheight, // height of character
 141       bool transpmode, // 1= transparent display
 142       unsigned char* axdrcs, // width and height of DRCS-chars
 143       int Ascender);
 144   TextPageinfo_t* DecodePage(bool showl25,              // 1=decode Level2.5-graphics
 145                              unsigned char* PageChar,   // page buffer, min. 25*40
 146                              TextPageAttr_t *PageAtrb,  // attribute buffer, min 25*40
 147                              bool HintMode,             // 1=show hidden information
 148                              bool showflof);            // 1=decode FLOF-line
 149   void Eval_l25(unsigned char* page_char, TextPageAttr_t *PageAtrb, bool HintMode);
 150   void Eval_Object(int iONr, TextCachedPage_t *pstCachedPage,
 151                    unsigned char *pAPx, unsigned char *pAPy,
 152                    unsigned char *pAPx0, unsigned char *pAPy0,
 153                    tObjType ObjType, unsigned char* pagedata, unsigned char* page_char, TextPageAttr_t* PageAtrb);
 154   void Eval_NumberedObject(int p, int s, int packet, int triplet, int high,
 155                            unsigned char *pAPx, unsigned char *pAPy,
 156                            unsigned char *pAPx0, unsigned char *pAPy0, unsigned char* page_char, TextPageAttr_t* PageAtrb);
 157   int Eval_Triplet(int iOData, TextCachedPage_t *pstCachedPage,
 158                    unsigned char *pAPx, unsigned char *pAPy,
 159                    unsigned char *pAPx0, unsigned char *pAPy0,
 160                    unsigned char *drcssubp, unsigned char *gdrcssubp,
 161                    signed char *endcol, TextPageAttr_t *attrPassive, unsigned char* pagedata, unsigned char* page_char, TextPageAttr_t* PageAtrb);
 162   int iTripletNumber2Data(int iONr, TextCachedPage_t *pstCachedPage, unsigned char* pagedata);
 163   int SetNational(unsigned char sec);
 164   int NextHex(int i);
 165   void SetColors(const unsigned short *pcolormap, int offset, int number);
 166   UTILS::COLOR::Color GetColorRGB(enumTeletextColor ttc);
 167
 168   static FT_Error MyFaceRequester(FTC_FaceID face_id, FT_Library library, FT_Pointer request_data, FT_Face *aface);
 169
 170   std::string         m_teletextFont;     /* Path to teletext font */
 171   int                 m_YOffset;          /* Swap position for Front buffer and Back buffer */
 172   UTILS::COLOR::Color* m_TextureBuffer; /* Texture buffer to hold generated data */
 173   bool                m_updateTexture;    /* Update the texture if set */
 174   char                prevHeaderPage;     /* Needed for texture update if header is changed */
 175   char                prevTimeSec;        /* Needed for Time string update */
 176
 177   int                 m_CatchRow;         /* for page catching */
 178   int                 m_CatchCol;         /*  "   "       "    */
 179   int                 m_CatchedPage;      /*  "   "       "    */
 180   int                 m_PCOldRow;         /*  "   "       "    */
 181   int                 m_PCOldCol;         /*  "   "       "    */
 182
 183   FT_Library          m_Library;          /* FreeType 2 data */
 184   FTC_Manager         m_Manager;          /*  "       "   "  */
 185   FTC_SBitCache       m_Cache;            /*  "       "   "  */
 186   FTC_SBit            m_sBit;             /*  "       "   "  */
 187   FT_Face             m_Face;             /*  "       "   "  */
 188   /*! An opaque handle to a cache node object. Each cache node is reference-counted. */
 189   FTC_Node m_anode;
 190   FTC_ImageTypeRec    m_TypeTTF;          /*  "       "   "  */
 191   int                 m_Ascender;         /*  "       "   "  */
 192
 193   int                 m_TempPage;         /* Temporary page number for number input */
 194   int                 m_LastPage;         /* Last selected Page */
 195   std::shared_ptr<TextCacheStruct_t>  m_txtCache;         /* Text cache generated by the VideoPlayer if Teletext present */
 196   TextRenderInfo_t    m_RenderInfo;       /* Rendering information of displayed Teletext page */
 197 };