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[ffmpeg_producer] #518 Fixed bug where decoders sometimes requires more than one...
[casparcg] / modules / ffmpeg / producer / video / video_decoder.h
1 /*
2 * Copyright 2013 Sveriges Television AB http://casparcg.com/
3 *
4 * This file is part of CasparCG (www.casparcg.com).
5 *
6 * CasparCG 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 3 of the License, or
9 * (at your option) any later version.
10 *
11 * CasparCG 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 CasparCG. If not, see <http://www.gnu.org/licenses/>.
18 *
19 * Author: Robert Nagy, ronag89@gmail.com
20 */
21
22 #pragma once
23
24 #include <common/memory.h>
25
26 #include <boost/noncopyable.hpp>
27
28 struct AVFormatContext;
29 struct AVFrame;
30 struct AVPacket;
31
32 namespace caspar {
33
34 namespace core {
35         class frame_factory;
36         class write_frame;
37 }
38
39 namespace ffmpeg {
40
41 class video_decoder : boost::noncopyable
42 {
43 public:
44         explicit video_decoder(const spl::shared_ptr<AVFormatContext>& context);
45
46         bool                                            ready() const;
47         bool                                            empty() const;
48         void                                            push(const std::shared_ptr<AVPacket>& packet);
49         std::shared_ptr<AVFrame>        poll();
50
51         int                                                     width() const;
52         int                                                     height() const;
53
54         uint32_t                                        nb_frames() const;
55         uint32_t                                        file_frame_number() const;
56         bool                                            is_progressive() const;
57
58         std::wstring                            print() const;
59
60 private:
61         struct implementation;
62         spl::shared_ptr<implementation> impl_;
63 };
64
65 }}