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 "weak_film.h"
  28 #include <dcp/picture_asset_writer.h>
  29 #include <dcp/atmos_asset_writer.h>
  30 #include <boost/shared_ptr.hpp>
  31 #include <boost/weak_ptr.hpp>
  32
  33 namespace dcpomatic {
  34         class Font;
  35 }
  36
  37 class Film;
  38 class Job;
  39 class AudioBuffers;
  40 class InfoFileHandle;
  41 struct write_frame_info_test;
  42
  43 namespace dcp {
  44         class MonoPictureAsset;
  45         class MonoPictureAssetWriter;
  46         class StereoPictureAsset;
  47         class StereoPictureAssetWriter;
  48         class PictureAsset;
  49         class PictureAssetWriter;
  50         class SoundAsset;
  51         class SoundAssetWriter;
  52         class SubtitleAsset;
  53         class AtmosAsset;
  54         class ReelAsset;
  55         class Reel;
  56         class ReelPictureAsset;
  57 }
  58
  59 class ReelWriter : public WeakConstFilm
  60 {
  61 public:
  62         ReelWriter (
  63                 boost::weak_ptr<const Film> film,
  64                 dcpomatic::DCPTimePeriod period,
  65                 boost::shared_ptr<Job> job,
  66                 int reel_index,
  67                 int reel_count
  68                 );
  69
  70         void write (boost::shared_ptr<const dcp::Data> encoded, Frame frame, Eyes eyes);
  71         void fake_write (int size);
  72         void repeat_write (Frame frame, Eyes eyes);
  73         void write (boost::shared_ptr<const AudioBuffers> audio);
  74         void write (PlayerText text, TextType type, boost::optional<DCPTextTrack> track, dcpomatic::DCPTimePeriod period);
  75         void write (boost::shared_ptr<const dcp::AtmosFrame> atmos, AtmosMetadata metadata);
  76
  77         void finish ();
  78         boost::shared_ptr<dcp::Reel> create_reel (std::list<ReferencedReelAsset> const & refs, std::list<boost::shared_ptr<dcpomatic::Font> > const & fonts);
  79         void calculate_digests (boost::function<void (float)> set_progress);
  80
  81         Frame start () const;
  82
  83         dcpomatic::DCPTimePeriod period () const {
  84                 return _period;
  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 (boost::filesystem::path asset);
 100         bool existing_picture_frame_ok (FILE* asset_file, boost::shared_ptr<InfoFileHandle> info_file, Frame frame) const;
 101
 102         boost::shared_ptr<dcp::ReelPictureAsset> create_reel_picture (boost::shared_ptr<dcp::Reel> reel, std::list<ReferencedReelAsset> const & refs) const;
 103         void create_reel_sound (boost::shared_ptr<dcp::Reel> reel, std::list<ReferencedReelAsset> const & refs) const;
 104         void create_reel_text (
 105                 boost::shared_ptr<dcp::Reel> reel,
 106                 std::list<ReferencedReelAsset> const & refs, std::list<boost::shared_ptr<dcpomatic::Font> > const& fonts,
 107                 int64_t duration
 108                 ) const;
 109         void create_reel_markers (boost::shared_ptr<dcp::Reel> reel) const;
 110
 111         dcpomatic::DCPTimePeriod _period;
 112         /** the first picture frame index that does not already exist in our MXF */
 113         int _first_nonexistant_frame;
 114         /** the data of the last written frame, if there is one */
 115         boost::shared_ptr<const dcp::Data> _last_written[EYES_COUNT];
 116         /** index of this reel within the DCP (starting from 0) */
 117         int _reel_index;
 118         /** number of reels in the DCP */
 119         int _reel_count;
 120         boost::optional<std::string> _content_summary;
 121         boost::weak_ptr<Job> _job;
 122
 123         boost::shared_ptr<dcp::PictureAsset> _picture_asset;
 124         /** picture asset writer, or 0 if we are not writing any picture because we already have one */
 125         boost::shared_ptr<dcp::PictureAssetWriter> _picture_asset_writer;
 126         boost::shared_ptr<dcp::SoundAsset> _sound_asset;
 127         boost::shared_ptr<dcp::SoundAssetWriter> _sound_asset_writer;
 128         boost::shared_ptr<dcp::SubtitleAsset> _subtitle_asset;
 129         std::map<DCPTextTrack, boost::shared_ptr<dcp::SubtitleAsset> > _closed_caption_assets;
 130         boost::shared_ptr<dcp::AtmosAsset> _atmos_asset;
 131         boost::shared_ptr<dcp::AtmosAssetWriter> _atmos_asset_writer;
 132
 133         static int const _info_size;
 134 };