Supporters update.
[dcpomatic.git] / src / lib / ffmpeg_examiner.h
1 /*
2     Copyright (C) 2013-2017 Carl Hetherington <cth@carlh.net>
3
4     This file is part of DCP-o-matic.
5
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.
10
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.
15
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/>.
18
19 */
20
21 #include "ffmpeg.h"
22 #include "video_examiner.h"
23 #include <boost/optional.hpp>
24
25 struct AVStream;
26
27 class FFmpegAudioStream;
28 class FFmpegSubtitleStream;
29 class Job;
30
31 class FFmpegExaminer : public FFmpeg, public VideoExaminer
32 {
33 public:
34         FFmpegExaminer (boost::shared_ptr<const FFmpegContent>, boost::shared_ptr<Job> job = boost::shared_ptr<Job> ());
35
36         bool has_video () const;
37
38         boost::optional<double> video_frame_rate () const;
39         dcp::Size video_size () const;
40         Frame video_length () const;
41         boost::optional<double> sample_aspect_ratio () const;
42         bool yuv () const;
43
44         std::vector<boost::shared_ptr<FFmpegSubtitleStream> > subtitle_streams () const {
45                 return _subtitle_streams;
46         }
47
48         std::vector<boost::shared_ptr<FFmpegAudioStream> > audio_streams () const {
49                 return _audio_streams;
50         }
51
52         boost::optional<ContentTime> first_video () const {
53                 return _first_video;
54         }
55
56         AVColorRange color_range () const {
57                 return video_codec_context()->color_range;
58         }
59
60         AVColorPrimaries color_primaries () const {
61                 return video_codec_context()->color_primaries;
62         }
63
64         AVColorTransferCharacteristic color_trc () const {
65                 return video_codec_context()->color_trc;
66         }
67
68         AVColorSpace colorspace () const {
69                 return video_codec_context()->colorspace;
70         }
71
72         boost::optional<int> bits_per_pixel () const;
73
74         boost::optional<double> rotation () const {
75                 return _rotation;
76         }
77
78         bool pulldown () const {
79                 return _pulldown;
80         }
81
82 #ifdef DCPOMATIC_VARIANT_SWAROOP
83         boost::optional<std::string> id () const {
84                 return _id;
85         }
86 #endif
87
88 private:
89         void video_packet (AVCodecContext *, std::string& temporal_reference);
90         void audio_packet (AVCodecContext *, boost::shared_ptr<FFmpegAudioStream>);
91
92         std::string stream_name (AVStream* s) const;
93         std::string subtitle_stream_name (AVStream* s) const;
94         boost::optional<ContentTime> frame_time (AVStream* s) const;
95
96         std::vector<boost::shared_ptr<FFmpegSubtitleStream> > _subtitle_streams;
97         std::vector<boost::shared_ptr<FFmpegAudioStream> > _audio_streams;
98         boost::optional<ContentTime> _first_video;
99         /** Video length, either obtained from the header or derived by running
100          *  through the whole file.
101          */
102         Frame _video_length;
103         bool _need_video_length;
104
105         boost::optional<double> _rotation;
106         bool _pulldown;
107
108         struct SubtitleStart
109         {
110                 SubtitleStart (std::string id_, bool image_, ContentTime time_)
111                         : id (id_)
112                         , image (image_)
113                         , time (time_)
114                 {}
115
116                 std::string id;
117                 /** true if it's an image subtitle, false for text */
118                 bool image;
119                 ContentTime time;
120         };
121
122         typedef std::map<boost::shared_ptr<FFmpegSubtitleStream>, boost::optional<SubtitleStart> > LastSubtitleMap;
123         LastSubtitleMap _last_subtitle_start;
124 };