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 "font_id_allocator.h"
30 #include <dcp/mono_j2k_picture_asset_reader.h>
31 #include <dcp/stereo_j2k_picture_asset_reader.h>
32 #include <dcp/sound_asset_reader.h>
33 #include <dcp/subtitle_asset.h>
42 struct dcp_subtitle_within_dcp_test;
45 class DCPDecoder : public Decoder
49 std::shared_ptr<const Film> film,
50 std::shared_ptr<const DCPContent> content,
53 std::shared_ptr<DCPDecoder> old
56 std::vector<std::shared_ptr<dcp::Reel>> reels () const {
60 void set_decode_referenced (bool r);
61 void set_forced_reduction (boost::optional<int> reduction);
63 bool pass () override;
64 void seek (dcpomatic::ContentTime t, bool accurate) override;
66 std::string lazy_digest () const {
70 dcpomatic::ContentTime position () const override;
73 friend struct dcp_subtitle_within_dcp_test;
77 void pass_texts (dcpomatic::ContentTime next, dcp::Size size);
79 dcpomatic::ContentTime next,
80 std::shared_ptr<dcp::SubtitleAsset> asset,
83 std::shared_ptr<TextDecoder> decoder,
86 std::string calculate_lazy_digest (std::shared_ptr<const DCPContent>) const;
88 std::shared_ptr<const DCPContent> _dcp_content;
90 /** Time of next thing to return from pass relative to the start of _reel */
91 dcpomatic::ContentTime _next;
92 std::vector<std::shared_ptr<dcp::Reel>> _reels;
94 std::vector<std::shared_ptr<dcp::Reel>>::iterator _reel;
95 /** Offset of _reel from the start of the content in frames */
97 /** Reader for current J2K mono picture asset, if applicable */
98 std::shared_ptr<dcp::MonoJ2KPictureAssetReader> _j2k_mono_reader;
99 /** Reader for current J2K stereo picture asset, if applicable */
100 std::shared_ptr<dcp::StereoJ2KPictureAssetReader> _j2k_stereo_reader;
101 /** Reader for current sound asset, if applicable */
102 std::shared_ptr<dcp::SoundAssetReader> _sound_reader;
103 std::shared_ptr<dcp::AtmosAssetReader> _atmos_reader;
104 boost::optional<AtmosMetadata> _atmos_metadata;
106 bool _decode_referenced = false;
107 boost::optional<int> _forced_reduction;
109 std::string _lazy_digest;
111 FontIDAllocator _font_id_allocator;