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
  50   /*!
  51    \brief Checks if the data in the decoder has changed
  52    \return true if the data in the decoder has changed, false otherwise
  53    */
  54   bool Changed();
  55
  56   bool InitDecoder();
  57   void EndDecoder();
  58   void RenderPage();
  59   bool HandleAction(const CAction &action);
  60
  61 private:
  62   void PageInput(int Number);
  63   void GetNextPageOne(bool up);
  64   void GetNextSubPage(int offset);
  65   bool IsSubtitlePage(int pageNumber) const;
  66   void SwitchZoomMode();
  67   void SwitchTranspMode();
  68   void SwitchHintMode();
  69   void ColorKey(int target);
  70   void StartPageCatching();
  71   void StopPageCatching();
  72   void CatchNextPage(int firstlineinc, int inc);
  73   void RenderCatchedPage();
  74   void DoFlashing(int startrow);
  75   void DoRenderPage(int startrow, int national_subset_bak);
  76   void Decode_BTT();
  77   void Decode_ADIP();
  78   int TopText_GetNext(int startpage, int up, int findgroup);
  79   void Showlink(int column, int linkpage);
  80   void CreateLine25();
  81   void RenderCharFB(int Char, TextPageAttr_t *Attribute);
  82   void RenderCharBB(int Char, TextPageAttr_t *Attribute);
  83   void CopyBB2FB();
  84   void SetFontWidth(int newWidth);
  85   int GetCurFontWidth();
  86   void SetPosX(int column);
  87   void ClearBB(UTILS::COLOR::Color Color);
  88   void ClearFB(UTILS::COLOR::Color Color);
  89   void FillBorder(UTILS::COLOR::Color Color);
  90   void FillRect(
  91       UTILS::COLOR::Color* buffer, int xres, int x, int y, int w, int h, UTILS::COLOR::Color Color);
  92   void DrawVLine(
  93       UTILS::COLOR::Color* lfb, int xres, int x, int y, int l, UTILS::COLOR::Color color);
  94   void DrawHLine(
  95       UTILS::COLOR::Color* lfb, int xres, int x, int y, int l, UTILS::COLOR::Color color);
  96   void FillRectMosaicSeparated(UTILS::COLOR::Color* lfb,
  97                                int xres,
  98                                int x,
  99                                int y,
 100                                int w,
 101                                int h,
 102                                UTILS::COLOR::Color fgcolor,
 103                                UTILS::COLOR::Color bgcolor,
 104                                int set);
 105   void FillTrapez(UTILS::COLOR::Color* lfb,
 106                   int xres,
 107                   int x0,
 108                   int y0,
 109                   int l0,
 110                   int xoffset1,
 111                   int h,
 112                   int l1,
 113                   UTILS::COLOR::Color color);
 114   void FlipHorz(UTILS::COLOR::Color* lfb, int xres, int x, int y, int w, int h);
 115   void FlipVert(UTILS::COLOR::Color* lfb, int xres, int x, int y, int w, int h);
 116   int ShapeCoord(int param, int curfontwidth, int curfontheight);
 117   void DrawShape(UTILS::COLOR::Color* lfb,
 118                  int xres,
 119                  int x,
 120                  int y,
 121                  int shapenumber,
 122                  int curfontwidth,
 123                  int fontheight,
 124                  int curfontheight,
 125                  UTILS::COLOR::Color fgcolor,
 126                  UTILS::COLOR::Color bgcolor,
 127                  bool clear);
 128   void RenderDRCS(
 129       int xres,
 130       unsigned char* s, /* pointer to char data, parity undecoded */
 131       UTILS::COLOR::Color* d, /* pointer to frame buffer of top left pixel */
 132       unsigned char* ax, /* array[0..12] of x-offsets, array[0..10] of y-offsets for each pixel */
 133       UTILS::COLOR::Color fgcolor,
 134       UTILS::COLOR::Color bgcolor);
 135   void RenderCharIntern(TextRenderInfo_t* RenderInfo, int Char, TextPageAttr_t *Attribute, int zoom, int yoffset);
 136   int RenderChar(
 137       UTILS::COLOR::Color* buffer, // pointer to render buffer, min. fontheight*2*xres
 138       int xres, // length of 1 line in render buffer
 139       int Char, // character to render
 140       int*
 141           pPosX, // left border for rendering relative to *buffer, will be set to right border after rendering
 142       int PosY, // vertical position of char in *buffer
 143       TextPageAttr_t* Attribute, // Attributes of Char
 144       bool zoom, // 1= character will be rendered in double height
 145       int curfontwidth, // rendering width of character
 146       int curfontwidth2, // rendering width of next character (needed for doublewidth)
 147       int fontheight, // height of character
 148       bool transpmode, // 1= transparent display
 149       unsigned char* axdrcs, // width and height of DRCS-chars
 150       int Ascender);
 151   TextPageinfo_t* DecodePage(bool showl25,              // 1=decode Level2.5-graphics
 152                              unsigned char* PageChar,   // page buffer, min. 25*40
 153                              TextPageAttr_t *PageAtrb,  // attribute buffer, min 25*40
 154                              bool HintMode,             // 1=show hidden information
 155                              bool showflof);            // 1=decode FLOF-line
 156   void Eval_l25(unsigned char* page_char, TextPageAttr_t *PageAtrb, bool HintMode);
 157   void Eval_Object(int iONr, TextCachedPage_t *pstCachedPage,
 158                    unsigned char *pAPx, unsigned char *pAPy,
 159                    unsigned char *pAPx0, unsigned char *pAPy0,
 160                    tObjType ObjType, unsigned char* pagedata, unsigned char* page_char, TextPageAttr_t* PageAtrb);
 161   void Eval_NumberedObject(int p, int s, int packet, int triplet, int high,
 162                            unsigned char *pAPx, unsigned char *pAPy,
 163                            unsigned char *pAPx0, unsigned char *pAPy0, unsigned char* page_char, TextPageAttr_t* PageAtrb);
 164   int Eval_Triplet(int iOData, TextCachedPage_t *pstCachedPage,
 165                    unsigned char *pAPx, unsigned char *pAPy,
 166                    unsigned char *pAPx0, unsigned char *pAPy0,
 167                    unsigned char *drcssubp, unsigned char *gdrcssubp,
 168                    signed char *endcol, TextPageAttr_t *attrPassive, unsigned char* pagedata, unsigned char* page_char, TextPageAttr_t* PageAtrb);
 169   int iTripletNumber2Data(int iONr, TextCachedPage_t *pstCachedPage, unsigned char* pagedata);
 170   int SetNational(unsigned char sec);
 171   int NextHex(int i);
 172   void SetColors(const unsigned short *pcolormap, int offset, int number);
 173   UTILS::COLOR::Color GetColorRGB(enumTeletextColor ttc);
 174
 175   static FT_Error MyFaceRequester(FTC_FaceID face_id, FT_Library library, FT_Pointer request_data, FT_Face *aface);
 176
 177   std::string         m_teletextFont;     /* Path to teletext font */
 178   int                 m_YOffset;          /* Swap position for Front buffer and Back buffer */
 179   UTILS::COLOR::Color* m_TextureBuffer; /* Texture buffer to hold generated data */
 180   bool                m_updateTexture;    /* Update the texture if set */
 181   char                prevHeaderPage;     /* Needed for texture update if header is changed */
 182   char                prevTimeSec;        /* Needed for Time string update */
 183
 184   int                 m_CatchRow;         /* for page catching */
 185   int                 m_CatchCol;         /*  "   "       "    */
 186   int                 m_CatchedPage;      /*  "   "       "    */
 187   int                 m_PCOldRow;         /*  "   "       "    */
 188   int                 m_PCOldCol;         /*  "   "       "    */
 189
 190   FT_Library          m_Library;          /* FreeType 2 data */
 191   FTC_Manager         m_Manager;          /*  "       "   "  */
 192   FTC_SBitCache       m_Cache;            /*  "       "   "  */
 193   FTC_SBit            m_sBit;             /*  "       "   "  */
 194   FT_Face             m_Face;             /*  "       "   "  */
 195   /*! An opaque handle to a cache node object. Each cache node is reference-counted. */
 196   FTC_Node m_anode{nullptr};
 197   FTC_ImageTypeRec    m_TypeTTF;          /*  "       "   "  */
 198   int                 m_Ascender;         /*  "       "   "  */
 199
 200   int                 m_TempPage;         /* Temporary page number for number input */
 201   int                 m_LastPage;         /* Last selected Page */
 202   std::shared_ptr<TextCacheStruct_t>  m_txtCache;         /* Text cache generated by the VideoPlayer if Teletext present */
 203   TextRenderInfo_t    m_RenderInfo;       /* Rendering information of displayed Teletext page */
 204 };