/* * vdr-ttxtsubs - A plugin for the Linux Video Disk Recorder * Copyright (c) 2003 - 2008 Ragnar Sundblad * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License along with * this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * */ // ----- cTtxtSubsFilter ----- // Filters out the pages on one teletext stream class cTtxtSubsFilter { public: cTtxtSubsFilter(void); virtual ~cTtxtSubsFilter(void); void SetPages(size_t count, uint16_t *pages); // indata and outdata are pointers to a ttxt data row buffers, // if return value <> 0 outdata countains data to pass on int Filter(char *indata, char *outdata); private: void FreePages(void); int Find(int count, uint16_t *pages, uint16_t pageno); void MakeY0(char *outdata, char *indata, uint16_t newpageno); int mCount; // number of pages to filter out uint16_t *mPages; // array of page numbers int mMagPage[8]; /* index into pages for each mag number, or -1 if not currently collecting pages for that mag */ };