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.
44 virtual std::string to_string () const = 0;
47 /** @class AudioStream
48 * @brief A stream of audio data.
50 struct AudioStream : public Stream
53 AudioStream (int r, int64_t l)
58 /* Only used for backwards compatibility for state file version < 1 */
59 void set_sample_rate (int s) {
63 int channels () const {
64 return av_get_channel_layout_nb_channels (_channel_layout);
67 int sample_rate () const {
71 int64_t channel_layout () const {
72 return _channel_layout;
82 int64_t _channel_layout;
85 /** @class SubtitleStream
86 * @brief A stream of subtitle data.
88 class SubtitleStream : public Stream
91 SubtitleStream (std::string n, int i)
96 std::string to_string () const;
98 std::string name () const {
106 static boost::shared_ptr<SubtitleStream> create (std::string t, boost::optional<int> v);
109 friend class stream_test;
111 SubtitleStream (std::string t, boost::optional<int> v);
117 boost::shared_ptr<AudioStream> audio_stream_factory (std::string t, boost::optional<int> version);
118 boost::shared_ptr<SubtitleStream> subtitle_stream_factory (std::string t, boost::optional<int> version);