2 Copyright (C) 2014-2021 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
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.
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.
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/>.
22 /** @file src/dcp_decoder.h
23 * @brief A decoder of existing DCPs.
27 #include "atmos_metadata.h"
29 #include <dcp/mono_picture_asset_reader.h>
30 #include <dcp/stereo_picture_asset_reader.h>
31 #include <dcp/sound_asset_reader.h>
32 #include <dcp/subtitle_asset.h>
41 struct dcp_subtitle_within_dcp_test;
44 class DCPDecoder : public Decoder
48 std::shared_ptr<const Film> film,
49 std::shared_ptr<const DCPContent> content,
52 std::shared_ptr<DCPDecoder> old
55 std::vector<std::shared_ptr<dcp::Reel>> reels () const {
59 void set_decode_referenced (bool r);
60 void set_forced_reduction (boost::optional<int> reduction);
62 bool pass () override;
63 void seek (dcpomatic::ContentTime t, bool accurate) override;
65 std::vector<dcpomatic::FontData> fonts () const override;
67 std::string lazy_digest () const {
71 dcpomatic::ContentTime position () const override;
74 friend struct dcp_subtitle_within_dcp_test;
78 void pass_texts (dcpomatic::ContentTime next, dcp::Size size);
80 dcpomatic::ContentTime next,
81 std::shared_ptr<dcp::SubtitleAsset> asset,
84 std::shared_ptr<TextDecoder> decoder,
87 std::string calculate_lazy_digest (std::shared_ptr<const DCPContent>) const;
89 std::shared_ptr<const DCPContent> _dcp_content;
91 /** Time of next thing to return from pass relative to the start of _reel */
92 dcpomatic::ContentTime _next;
93 std::vector<std::shared_ptr<dcp::Reel>> _reels;
95 std::vector<std::shared_ptr<dcp::Reel>>::iterator _reel;
96 /** Offset of _reel from the start of the content in frames */
98 /** Reader for current mono picture asset, if applicable */
99 std::shared_ptr<dcp::MonoPictureAssetReader> _mono_reader;
100 /** Reader for current stereo picture asset, if applicable */
101 std::shared_ptr<dcp::StereoPictureAssetReader> _stereo_reader;
102 /** Reader for current sound asset, if applicable */
103 std::shared_ptr<dcp::SoundAssetReader> _sound_reader;
104 std::shared_ptr<dcp::AtmosAssetReader> _atmos_reader;
105 boost::optional<AtmosMetadata> _atmos_metadata;
107 bool _decode_referenced = false;
108 boost::optional<int> _forced_reduction;
110 std::string _lazy_digest;