2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
4 * This file is part of CasparCG (www.casparcg.com).
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.
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.
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/>.
19 * Author: Robert Nagy, ronag89@gmail.com
24 #include <common/forward.h>
25 #include <common/memory.h>
27 #include <core/video_format.h>
28 #include <core/frame/pixel_format.h>
29 #include <core/mixer/audio/audio_mixer.h>
32 #include <boost/rational.hpp>
37 #pragma warning (push)
38 #pragma warning (disable : 4244)
42 #include <libavutil/avutil.h>
49 struct AVFormatContext;
52 struct AVCodecContext;
54 namespace caspar { namespace ffmpeg {
58 core::field_mode get_mode(const AVFrame& frame);
59 core::mutable_frame make_frame(const void* tag, const spl::shared_ptr<AVFrame>& decoded_frame, core::frame_factory& frame_factory, const core::audio_channel_layout& channel_layout);
60 spl::shared_ptr<AVFrame> make_av_frame(core::mutable_frame& frame);
61 spl::shared_ptr<AVFrame> make_av_frame(std::array<uint8_t*, 4> data, const core::pixel_format_desc& pix_desc);
63 core::pixel_format_desc pixel_format_desc(PixelFormat pix_fmt, int width, int height);
65 spl::shared_ptr<AVPacket> create_packet();
66 spl::shared_ptr<AVFrame> create_frame();
68 spl::shared_ptr<AVCodecContext> open_codec(AVFormatContext& context, AVMediaType type, int& index, bool single_threaded);
69 spl::shared_ptr<AVFormatContext> open_input(const std::wstring& filename);
71 bool is_sane_fps(AVRational time_base);
72 AVRational fix_time_base(AVRational time_base);
74 std::shared_ptr<AVFrame> flush();
76 double read_fps(AVFormatContext& context, double fail_value);
77 boost::rational<int> read_framerate(AVFormatContext& context, const boost::rational<int>& fail_value);
79 std::wstring print_mode(int width, int height, double fps, bool interlaced);
81 std::wstring probe_stem(const std::wstring& stem, bool only_video);
82 bool is_valid_file(const std::wstring& filename, bool only_video);
83 bool try_get_duration(const std::wstring filename, std::int64_t& duration, boost::rational<std::int64_t>& time_base);
85 core::audio_channel_layout get_audio_channel_layout(int num_channels, std::uint64_t layout, const std::wstring& channel_layout_spec);
87 // av_get_default_channel_layout does not work for layouts not predefined in ffmpeg. This is needed to support > 8 channels.
88 std::int64_t create_channel_layout_bitmask(int num_channels);