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/*
Copyright (C) 2013-2015 Carl Hetherington <cth@carlh.net>
This program 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.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "ffmpeg.h"
#include "video_examiner.h"
#include <boost/optional.hpp>
struct AVStream;
class FFmpegAudioStream;
class FFmpegSubtitleStream;
class FFmpegExaminer : public FFmpeg, public VideoExaminer
{
public:
FFmpegExaminer (boost::shared_ptr<const FFmpegContent>, boost::shared_ptr<Job> job = boost::shared_ptr<Job> ());
boost::optional<double> video_frame_rate () const;
dcp::Size video_size () const;
Frame video_length () const;
boost::optional<double> sample_aspect_ratio () const;
std::vector<boost::shared_ptr<FFmpegSubtitleStream> > subtitle_streams () const {
return _subtitle_streams;
}
std::vector<boost::shared_ptr<FFmpegAudioStream> > audio_streams () const {
return _audio_streams;
}
boost::optional<ContentTime> first_video () const {
return _first_video;
}
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;
}
int bits_per_pixel () const;
private:
void video_packet (AVCodecContext *);
void audio_packet (AVCodecContext *, boost::shared_ptr<FFmpegAudioStream>);
void subtitle_packet (AVCodecContext *, boost::shared_ptr<FFmpegSubtitleStream>);
std::string stream_name (AVStream* s) const;
std::string audio_stream_name (AVStream* s) const;
std::string subtitle_stream_name (AVStream* s) const;
boost::optional<ContentTime> frame_time (AVStream* s) const;
std::vector<boost::shared_ptr<FFmpegSubtitleStream> > _subtitle_streams;
std::vector<boost::shared_ptr<FFmpegAudioStream> > _audio_streams;
boost::optional<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<ContentTime> _last_subtitle_start;
};
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