teletext.h

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#ifndef __lib_dvb_teletext_h
#define __lib_dvb_teletext_h
 
#include <lib/base/object.h>
#include <lib/dvb/idvb.h>
#include <lib/dvb/pesparse.h>
#include <lib/dvb/pmt.h>
#include <lib/gdi/gpixmap.h>
#include <map>
 
struct eDVBTeletextSubtitlePageElement
{
  gRGB m_color;
  std::string m_text;
  eRect m_area;
 
  int m_source_line;
 
  eDVBTeletextSubtitlePageElement(const gRGB &color, const std::string &text, int source_line)
    : m_color(color), m_text(text), m_source_line(source_line)
  {
  }
};
 
struct eDVBTeletextSubtitlePage
{
  pts_t m_pts;
  int m_have_pts;
  int m_timeout; /* in pts */
  std::vector<eDVBTeletextSubtitlePageElement> m_elements;
 
  void clearLine(int line) { for (unsigned int i = 0; i < m_elements.size(); ) if (m_elements[i].m_source_line == line) m_elements.erase(m_elements.begin() + i); else ++i; }
  void clear() { m_elements.clear(); }
};
 
class eDVBTeletextParser: public iObject, public ePESParser, public sigc::trackable
{
  DECLARE_REF(eDVBTeletextParser);
public:
  eDVBTeletextParser(iDVBDemux *demux);
  virtual ~eDVBTeletextParser();
  static const int max_id = 26;
  static const char * const my_country_codes[];
  int start(int pid);
  void setPageAndMagazine(int page, int magazine, const char * lang);
  void setMagazine(int magazine);
  void connectNewStream(const sigc::slot0<void> &slot, ePtr<eConnection> &connection);
  void connectNewPage(const sigc::slot1<void,const eDVBTeletextSubtitlePage &> &slot, ePtr<eConnection> &connection);
  std::set<eDVBServicePMTHandler::subtitleStream> m_found_subtitle_pages;
private:
  std::map<int, unsigned int> m_modifications;
  void processPESPacket(uint8_t *pkt, int len);
 
  ePtr<iDVBPESReader> m_pes_reader;
  ePtr<eConnection> m_read_connection;
 
  eDVBTeletextSubtitlePage m_subtitle_page;
 
  int m_C, m_Y, m_pid, m_page_M, m_page_X, m_page_open, m_double_height, m_box_open, m_L;
  int m_X28_0_valid, m_X28_t1, m_X28_t2;
  int m_M29_0_valid, m_M29_t1, m_M29_t2;
 
  void handlePageStart();
  void handleLine(unsigned char *line, int len);
  void handlePageEnd(int have_pts, const pts_t &pts);
 
  void addSubtitleString(int color, std::string string, int source_line);
 
  sigc::signal0<void> m_new_subtitle_stream;
  sigc::signal1<void,const eDVBTeletextSubtitlePage&> m_new_subtitle_page;
};
 
#endif