2 Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 /** @file src/lib/stream.h
21 * @brief Representations of audio and subtitle streams.
23 * Some content may have multiple `streams' of audio and/or subtitles; perhaps
24 * for multiple languages, or for stereo / surround mixes. These classes represent
25 * those streams, and know about their details.
28 #ifndef DVDOMATIC_STREAM_H
29 #define DVDOMATIC_STREAM_H
32 #include <boost/shared_ptr.hpp>
33 #include <boost/optional.hpp>
35 #include <libavutil/audioconvert.h>
39 * @brief Parent class for streams.
45 virtual std::string to_string () const = 0;
48 /** @class AudioStream
49 * @brief A stream of audio data.
51 struct AudioStream : public Stream
54 AudioStream (int r, int64_t l)
59 /* Only used for backwards compatibility for state file version < 1 */
60 void set_sample_rate (int s) {
64 int channels () const {
65 return av_get_channel_layout_nb_channels (_channel_layout);
68 int sample_rate () const {
72 int64_t channel_layout () const {
73 return _channel_layout;
83 int64_t _channel_layout;
86 /** @class SubtitleStream
87 * @brief A stream of subtitle data.
89 class SubtitleStream : public Stream
92 SubtitleStream (std::string n, int i)
97 std::string to_string () const;
99 std::string name () const {
107 static boost::shared_ptr<SubtitleStream> create (std::string t, boost::optional<int> v);
110 friend class stream_test;
112 SubtitleStream (std::string t, boost::optional<int> v);
118 boost::shared_ptr<AudioStream> audio_stream_factory (std::string t, boost::optional<int> version);
119 boost::shared_ptr<SubtitleStream> subtitle_stream_factory (std::string t, boost::optional<int> version);