Assorted C++11 tidying.
[dcpomatic.git] / src / lib / ffmpeg_file_encoder.h
1 /*
2     Copyright (C) 2017-2018 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
22 #ifndef DCPOMATIC_FFMPEG_FILE_ENCODER_H
23 #define DCPOMATIC_FFMPEG_FILE_ENCODER_H
24
25
26 #include "encoder.h"
27 #include "event_history.h"
28 #include "audio_mapping.h"
29 #include "log.h"
30 #include <dcp/key.h>
31 extern "C" {
32 #include <libavcodec/avcodec.h>
33 #include <libavformat/avformat.h>
34 }
35
36
37 class ExportAudioStream;
38
39
40 class FFmpegFileEncoder
41 {
42 public:
43         FFmpegFileEncoder (
44                 dcp::Size video_frame_size,
45                 int video_frame_rate,
46                 int audio_frame_rate,
47                 int channels,
48                 ExportFormat,
49                 bool audio_stream_per_channel,
50                 int x264_crf,
51                 boost::filesystem::path output
52                 );
53
54         ~FFmpegFileEncoder ();
55
56         void video (std::shared_ptr<PlayerVideo>, dcpomatic::DCPTime);
57         void audio (std::shared_ptr<AudioBuffers>);
58         void subtitle (PlayerText, dcpomatic::DCPTimePeriod);
59
60         void flush ();
61
62         static AVPixelFormat pixel_format (ExportFormat format);
63
64 private:
65         void setup_video ();
66         void setup_audio ();
67
68         void audio_frame (int size);
69
70         static void buffer_free(void* opaque, uint8_t* data);
71         void buffer_free2(uint8_t* data);
72
73         AVCodec* _video_codec = nullptr;
74         AVCodecContext* _video_codec_context = nullptr;
75         std::vector<std::shared_ptr<ExportAudioStream>> _audio_streams;
76         bool _audio_stream_per_channel;
77         AVFormatContext* _format_context = nullptr;
78         AVStream* _video_stream = nullptr;
79         AVPixelFormat _pixel_format;
80         AVSampleFormat _sample_format;
81         AVDictionary* _video_options = nullptr;
82         std::string _video_codec_name;
83         std::string _audio_codec_name;
84         int _audio_channels;
85
86         boost::filesystem::path _output;
87         dcp::Size _video_frame_size;
88         int _video_frame_rate;
89         int _audio_frame_rate;
90
91         int64_t _audio_frames = 0;
92
93         std::shared_ptr<AudioBuffers> _pending_audio;
94
95         /** Store of shared_ptr<Image> to keep them alive whilst raw pointers into
96             their data have been passed to FFmpeg.
97         */
98         std::map<uint8_t*, std::shared_ptr<const Image>> _pending_images;
99         boost::mutex _pending_images_mutex;
100
101         static int _video_stream_index;
102         static int _audio_stream_index_base;
103 };
104
105 #endif