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/*
Copyright (C) 2013-2017 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
DCP-o-matic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ffmpeg.h"
#include "video_examiner.h"
#include <boost/optional.hpp>
struct AVStream;
class FFmpegAudioStream;
class FFmpegSubtitleStream;
class Job;
class FFmpegExaminer : public FFmpeg, public VideoExaminer
{
public:
FFmpegExaminer (std::shared_ptr<const FFmpegContent>, std::shared_ptr<Job> job = std::shared_ptr<Job>());
bool has_video () const override;
boost::optional<double> video_frame_rate () const override;
boost::optional<dcp::Size> video_size() const override;
Frame video_length () const override;
boost::optional<double> sample_aspect_ratio () const override;
bool yuv () const override;
std::vector<std::shared_ptr<FFmpegSubtitleStream>> subtitle_streams () const {
return _subtitle_streams;
}
std::vector<std::shared_ptr<FFmpegAudioStream>> audio_streams () const {
return _audio_streams;
}
boost::optional<dcpomatic::ContentTime> first_video () const {
return _first_video;
}
VideoRange range () const override;
PixelQuanta pixel_quanta () const override;
AVColorRange color_range () const {
return video_codec_context()->color_range;
}
AVColorPrimaries color_primaries () const {
return video_codec_context()->color_primaries;
}
AVColorTransferCharacteristic color_trc () const {
return video_codec_context()->color_trc;
}
AVColorSpace colorspace () const {
return video_codec_context()->colorspace;
}
boost::optional<int> bits_per_pixel () const;
bool has_alpha() const;
boost::optional<double> rotation () const {
return _rotation;
}
bool pulldown () const {
return _pulldown;
}
private:
bool video_packet (AVCodecContext* context, std::string& temporal_reference, AVPacket* packet);
void audio_packet (AVCodecContext* context, std::shared_ptr<FFmpegAudioStream>, AVPacket* packet);
std::string stream_name (AVStream* s) const;
std::string subtitle_stream_name (AVStream* s) const;
boost::optional<dcpomatic::ContentTime> frame_time (AVFrame* frame, AVStream* stream) const;
std::vector<std::shared_ptr<FFmpegSubtitleStream>> _subtitle_streams;
std::vector<std::shared_ptr<FFmpegAudioStream>> _audio_streams;
boost::optional<dcpomatic::ContentTime> _first_video;
/** Video length, either obtained from the header or derived by running
* through the whole file.
*/
Frame _video_length;
bool _need_video_length;
boost::optional<double> _rotation;
bool _pulldown;
struct SubtitleStart
{
SubtitleStart (std::string id_, bool image_, dcpomatic::ContentTime time_)
: id (id_)
, image (image_)
, time (time_)
{}
std::string id;
/** true if it's an image subtitle, false for text */
bool image;
dcpomatic::ContentTime time;
};
typedef std::map<std::shared_ptr<FFmpegSubtitleStream>, boost::optional<SubtitleStart>> LastSubtitleMap;
LastSubtitleMap _last_subtitle_start;
};
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