src/lib/reel_writer.h

   1 /*
   2     Copyright (C) 2012-2018 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
  29 namespace dcpomatic {
  30         class Font;
  31 }
  32
  33 class Film;
  34 class Job;
  35 class AudioBuffers;
  36 struct write_frame_info_test;
  37
  38 namespace dcp {
  39         class MonoPictureAsset;
  40         class MonoPictureAssetWriter;
  41         class StereoPictureAsset;
  42         class StereoPictureAssetWriter;
  43         class PictureAsset;
  44         class PictureAssetWriter;
  45         class SoundAsset;
  46         class SoundAssetWriter;
  47         class SubtitleAsset;
  48         class ReelAsset;
  49         class Reel;
  50 }
  51
  52 class ReelWriter
  53 {
  54 public:
  55         ReelWriter (
  56                 boost::shared_ptr<const Film> film,
  57                 dcpomatic::DCPTimePeriod period,
  58                 boost::shared_ptr<Job> job,
  59                 int reel_index,
  60                 int reel_count,
  61                 boost::optional<std::string> content_summary
  62                 );
  63
  64         void write (boost::optional<dcp::Data> encoded, Frame frame, Eyes eyes);
  65         void fake_write (Frame frame, Eyes eyes, int size);
  66         void repeat_write (Frame frame, Eyes eyes);
  67         void write (boost::shared_ptr<const AudioBuffers> audio);
  68         void write (PlayerText text, TextType type, boost::optional<DCPTextTrack> track, dcpomatic::DCPTimePeriod period);
  69
  70         void finish ();
  71         boost::shared_ptr<dcp::Reel> create_reel (std::list<ReferencedReelAsset> const & refs, std::list<boost::shared_ptr<dcpomatic::Font> > const & fonts);
  72         void calculate_digests (boost::function<void (float)> set_progress);
  73
  74         Frame start () const;
  75
  76         dcpomatic::DCPTimePeriod period () const {
  77                 return _period;
  78         }
  79
  80         int last_written_video_frame () const {
  81                 return _last_written_video_frame;
  82         }
  83
  84         Eyes last_written_eyes () const {
  85                 return _last_written_eyes;
  86         }
  87
  88         int first_nonexistant_frame () const {
  89                 return _first_nonexistant_frame;
  90         }
  91
  92         dcp::FrameInfo read_frame_info (FILE* file, Frame frame, Eyes eyes) const;
  93
  94 private:
  95
  96         friend struct ::write_frame_info_test;
  97
  98         void write_frame_info (Frame frame, Eyes eyes, dcp::FrameInfo info) const;
  99         long frame_info_position (Frame frame, Eyes eyes) const;
 100         Frame check_existing_picture_asset ();
 101         bool existing_picture_frame_ok (FILE* asset_file, FILE* info_file, Frame frame) const;
 102
 103         boost::shared_ptr<const Film> _film;
 104
 105         dcpomatic::DCPTimePeriod _period;
 106         /** the first picture frame index that does not already exist in our MXF */
 107         int _first_nonexistant_frame;
 108         /** the data of the last written frame, if there is one */
 109         boost::optional<dcp::Data> _last_written[EYES_COUNT];
 110         /** the index of the last written video frame within the reel */
 111         int _last_written_video_frame;
 112         Eyes _last_written_eyes;
 113         /** index of this reel within the DCP (starting from 0) */
 114         int _reel_index;
 115         /** number of reels in the DCP */
 116         int _reel_count;
 117         boost::optional<std::string> _content_summary;
 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 };