src/lib/reel_writer.h

   1 /*
   2     Copyright (C) 2012-2020 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 "atmos_metadata.h"
  22 #include "types.h"
  23 #include "dcpomatic_time.h"
  24 #include "referenced_reel_asset.h"
  25 #include "player_text.h"
  26 #include "dcp_text_track.h"
  27 #include <dcp/picture_asset_writer.h>
  28 #include <dcp/atmos_asset_writer.h>
  29 #include <boost/shared_ptr.hpp>
  30 #include <boost/weak_ptr.hpp>
  31
  32 namespace dcpomatic {
  33         class Font;
  34 }
  35
  36 class Film;
  37 class Job;
  38 class AudioBuffers;
  39 class InfoFileHandle;
  40 struct write_frame_info_test;
  41
  42 namespace dcp {
  43         class MonoPictureAsset;
  44         class MonoPictureAssetWriter;
  45         class StereoPictureAsset;
  46         class StereoPictureAssetWriter;
  47         class PictureAsset;
  48         class PictureAssetWriter;
  49         class SoundAsset;
  50         class SoundAssetWriter;
  51         class SubtitleAsset;
  52         class AtmosAsset;
  53         class ReelAsset;
  54         class Reel;
  55 }
  56
  57 class ReelWriter
  58 {
  59 public:
  60         ReelWriter (
  61                 boost::shared_ptr<const Film> film,
  62                 dcpomatic::DCPTimePeriod period,
  63                 boost::shared_ptr<Job> job,
  64                 int reel_index,
  65                 int reel_count
  66                 );
  67
  68         void write (boost::shared_ptr<const dcp::Data> encoded, Frame frame, Eyes eyes);
  69         void fake_write (int size);
  70         void repeat_write (Frame frame, Eyes eyes);
  71         void write (boost::shared_ptr<const AudioBuffers> audio);
  72         void write (PlayerText text, TextType type, boost::optional<DCPTextTrack> track, dcpomatic::DCPTimePeriod period);
  73         void write (boost::shared_ptr<const dcp::AtmosFrame> atmos, AtmosMetadata metadata);
  74
  75         void finish ();
  76         boost::shared_ptr<dcp::Reel> create_reel (std::list<ReferencedReelAsset> const & refs, std::list<boost::shared_ptr<dcpomatic::Font> > const & fonts);
  77         void calculate_digests (boost::function<void (float)> set_progress);
  78
  79         Frame start () const;
  80
  81         dcpomatic::DCPTimePeriod period () const {
  82                 return _period;
  83         }
  84
  85         int first_nonexistant_frame () const {
  86                 return _first_nonexistant_frame;
  87         }
  88
  89         dcp::FrameInfo read_frame_info (boost::shared_ptr<InfoFileHandle> info, Frame frame, Eyes eyes) const;
  90
  91 private:
  92
  93         friend struct ::write_frame_info_test;
  94
  95         void write_frame_info (Frame frame, Eyes eyes, dcp::FrameInfo info) const;
  96         long frame_info_position (Frame frame, Eyes eyes) const;
  97         Frame check_existing_picture_asset (boost::filesystem::path asset);
  98         bool existing_picture_frame_ok (FILE* asset_file, boost::shared_ptr<InfoFileHandle> info_file, Frame frame) const;
  99
 100         boost::shared_ptr<const Film> _film;
 101
 102         dcpomatic::DCPTimePeriod _period;
 103         /** the first picture frame index that does not already exist in our MXF */
 104         int _first_nonexistant_frame;
 105         /** the data of the last written frame, if there is one */
 106         boost::shared_ptr<const dcp::Data> _last_written[EYES_COUNT];
 107         /** index of this reel within the DCP (starting from 0) */
 108         int _reel_index;
 109         /** number of reels in the DCP */
 110         int _reel_count;
 111         boost::optional<std::string> _content_summary;
 112         boost::weak_ptr<Job> _job;
 113
 114         boost::shared_ptr<dcp::PictureAsset> _picture_asset;
 115         /** picture asset writer, or 0 if we are not writing any picture because we already have one */
 116         boost::shared_ptr<dcp::PictureAssetWriter> _picture_asset_writer;
 117         boost::shared_ptr<dcp::SoundAsset> _sound_asset;
 118         boost::shared_ptr<dcp::SoundAssetWriter> _sound_asset_writer;
 119         boost::shared_ptr<dcp::SubtitleAsset> _subtitle_asset;
 120         std::map<DCPTextTrack, boost::shared_ptr<dcp::SubtitleAsset> > _closed_caption_assets;
 121         boost::shared_ptr<dcp::AtmosAsset> _atmos_asset;
 122         boost::shared_ptr<dcp::AtmosAssetWriter> _atmos_asset_writer;
 123
 124         static int const _info_size;
 125 };