2 Copyright (C) 2012-2021 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/decoder.h
23 * @brief Decoder class.
27 #ifndef DCPOMATIC_DECODER_H
28 #define DCPOMATIC_DECODER_H
31 #include "dcpomatic_time.h"
33 #include "weak_film.h"
34 #include <boost/utility.hpp>
46 * @brief Parent class for decoders of content.
48 class Decoder : public WeakConstFilm
51 Decoder (std::weak_ptr<const Film> film);
52 virtual ~Decoder () {}
54 Decoder (Decoder const&) = delete;
55 Decoder& operator= (Decoder const&) = delete;
57 std::shared_ptr<VideoDecoder> video;
58 std::shared_ptr<AudioDecoder> audio;
59 std::list<std::shared_ptr<TextDecoder>> text;
60 std::shared_ptr<AtmosDecoder> atmos;
62 std::shared_ptr<TextDecoder> only_text () const;
64 /** Do some decoding and perhaps emit video, audio or subtitle data.
65 * @return true if this decoder will emit no more data unless a seek() happens.
67 virtual bool pass () = 0;
68 virtual void seek (dcpomatic::ContentTime time, bool accurate);
70 virtual dcpomatic::ContentTime position () const;