src/lib/reel_writer.h

   1 /*
   2     Copyright (C) 2012-2019 Carl Hetherington <cth@carlh.net>
   3
   4     This file is part of DCP-o-matic.
   5
   6     DCP-o-matic is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     DCP-o-matic is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 */
  20
  21 #include "types.h"
  22 #include "dcpomatic_time.h"
  23 #include "referenced_reel_asset.h"
  24 #include "player_text.h"
  25 #include "dcp_text_track.h"
  26 #include <dcp/picture_asset_writer.h>
  27 #include <boost/shared_ptr.hpp>
  28 #include <boost/weak_ptr.hpp>
  29
  30 class Film;
  31 class Job;
  32 class Font;
  33 class AudioBuffers;
  34 class InfoFileHandle;
  35 struct write_frame_info_test;
  36
  37 namespace dcp {
  38         class MonoPictureAsset;
  39         class MonoPictureAssetWriter;
  40         class StereoPictureAsset;
  41         class StereoPictureAssetWriter;
  42         class PictureAsset;
  43         class PictureAssetWriter;
  44         class SoundAsset;
  45         class SoundAssetWriter;
  46         class SubtitleAsset;
  47         class ReelAsset;
  48         class Reel;
  49 }
  50
  51 class ReelWriter
  52 {
  53 public:
  54         ReelWriter (
  55                 boost::shared_ptr<const Film> film,
  56                 DCPTimePeriod period,
  57                 boost::shared_ptr<Job> job,
  58                 int reel_index,
  59                 int reel_count,
  60                 boost::optional<std::string> content_summary
  61                 );
  62
  63         void write (boost::optional<dcp::Data> encoded, Frame frame, Eyes eyes);
  64         void fake_write (Frame frame, Eyes eyes, int size);
  65         void repeat_write (Frame frame, Eyes eyes);
  66         void write (boost::shared_ptr<const AudioBuffers> audio);
  67         void write (PlayerText text, TextType type, boost::optional<DCPTextTrack> track, DCPTimePeriod period);
  68
  69         void finish ();
  70         boost::shared_ptr<dcp::Reel> create_reel (std::list<ReferencedReelAsset> const & refs, std::list<boost::shared_ptr<Font> > const & fonts);
  71         void calculate_digests (boost::function<void (float)> set_progress);
  72
  73         Frame start () const;
  74
  75         DCPTimePeriod period () const {
  76                 return _period;
  77         }
  78
  79         int last_written_video_frame () const {
  80                 return _last_written_video_frame;
  81         }
  82
  83         Eyes last_written_eyes () const {
  84                 return _last_written_eyes;
  85         }
  86
  87         int first_nonexistant_frame () const {
  88                 return _first_nonexistant_frame;
  89         }
  90
  91         dcp::FrameInfo read_frame_info (boost::shared_ptr<InfoFileHandle> info, Frame frame, Eyes eyes) const;
  92
  93 private:
  94
  95         friend struct ::write_frame_info_test;
  96
  97         void write_frame_info (Frame frame, Eyes eyes, dcp::FrameInfo info) const;
  98         long frame_info_position (Frame frame, Eyes eyes) const;
  99         Frame check_existing_picture_asset ();
 100         bool existing_picture_frame_ok (FILE* asset_file, boost::shared_ptr<InfoFileHandle> info_file, Frame frame) const;
 101
 102         boost::shared_ptr<const Film> _film;
 103
 104         DCPTimePeriod _period;
 105         /** the first picture frame index that does not already exist in our MXF */
 106         int _first_nonexistant_frame;
 107         /** the data of the last written frame, if there is one */
 108         boost::optional<dcp::Data> _last_written[EYES_COUNT];
 109         /** the index of the last written video frame within the reel */
 110         int _last_written_video_frame;
 111         Eyes _last_written_eyes;
 112         /** index of this reel within the DCP (starting from 0) */
 113         int _reel_index;
 114         /** number of reels in the DCP */
 115         int _reel_count;
 116         boost::optional<std::string> _content_summary;
 117         boost::weak_ptr<Job> _job;
 118
 119         boost::shared_ptr<dcp::PictureAsset> _picture_asset;
 120         boost::shared_ptr<dcp::PictureAssetWriter> _picture_asset_writer;
 121         boost::shared_ptr<dcp::SoundAsset> _sound_asset;
 122         boost::shared_ptr<dcp::SoundAssetWriter> _sound_asset_writer;
 123         boost::shared_ptr<dcp::SubtitleAsset> _subtitle_asset;
 124         std::map<DCPTextTrack, boost::shared_ptr<dcp::SubtitleAsset> > _closed_caption_assets;
 125
 126         static int const _info_size;
 127 };