modules/demux/adaptive/playlist/SegmentTimeline.h

   1 /*****************************************************************************
   2  * SegmentTimeline.cpp: Implement the SegmentTimeline tag.
   3  *****************************************************************************
   4  * Copyright (C) 1998-2007 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Hugo Beauzée-Luyssen <hugo@beauzee.fr>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #ifndef SEGMENTTIMELINE_H
  25 #define SEGMENTTIMELINE_H
  26
  27 #include "SegmentInfoCommon.h"
  28 #include <vlc_common.h>
  29 #include <list>
  30
  31 namespace adaptive
  32 {
  33     namespace playlist
  34     {
  35         class SegmentTimeline : public TimescaleAble
  36         {
  37             class Element;
  38
  39             public:
  40                 SegmentTimeline(TimescaleAble *);
  41                 SegmentTimeline(uint64_t);
  42                 virtual ~SegmentTimeline();
  43                 void addElement(uint64_t, stime_t d, uint64_t r = 0, stime_t t = 0);
  44                 uint64_t getElementNumberByScaledPlaybackTime(stime_t) const;
  45                 bool    getScaledPlaybackTimeDurationBySegmentNumber(uint64_t, vlc_tick_t *, vlc_tick_t *) const;
  46                 stime_t getScaledPlaybackTimeByElementNumber(uint64_t) const;
  47                 stime_t getMinAheadScaledTime(uint64_t) const;
  48                 uint64_t maxElementNumber() const;
  49                 uint64_t minElementNumber() const;
  50                 void pruneByPlaybackTime(vlc_tick_t);
  51                 size_t pruneBySequenceNumber(uint64_t);
  52                 void mergeWith(SegmentTimeline &);
  53                 void debug(vlc_object_t *, int = 0) const;
  54
  55             private:
  56                 std::list<Element *> elements;
  57
  58                 class Element
  59                 {
  60                     public:
  61                         Element(uint64_t, stime_t, uint64_t, stime_t);
  62                         void debug(vlc_object_t *, int = 0) const;
  63                         bool contains(stime_t) const;
  64                         stime_t  t;
  65                         stime_t  d;
  66                         uint64_t r;
  67                         uint64_t number;
  68                 };
  69         };
  70     }
  71 }
  72
  73 #endif // SEGMENTTIMELINE_H