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/*
Copyright (C) 2013-2021 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 "config.h"
#include "cross.h"
#include "exceptions.h"
#include "ffmpeg_image_proxy.h"
#include "film.h"
#include "image.h"
#include "image_content.h"
#include "image_examiner.h"
#include "job.h"
#include <dcp/openjpeg_image.h>
#include <dcp/exceptions.h>
#include <dcp/filesystem.h>
#include <dcp/j2k_transcode.h>
#include <iostream>
#include "i18n.h"
using std::cout;
using std::list;
using std::shared_ptr;
using std::sort;
using boost::optional;
ImageExaminer::ImageExaminer (shared_ptr<const Film> film, shared_ptr<const ImageContent> content, shared_ptr<Job>)
: _film (film)
, _image_content (content)
{
auto path = content->path(0);
if (valid_j2k_file (path)) {
auto size = dcp::filesystem::file_size(path);
dcp::File f(path, "rb");
if (!f) {
throw FileError ("Could not open file for reading", path);
}
std::vector<uint8_t> buffer(size);
f.checked_read(buffer.data(), size);
f.close();
try {
_video_size = dcp::decompress_j2k(buffer.data(), size, 0)->size();
} catch (dcp::ReadError& e) {
throw DecodeError(fmt::format(_("Could not decode JPEG2000 file {} ({})"), path.string(), e.what()));
}
} else {
FFmpegImageProxy proxy(content->path(0));
auto image = proxy.image(Image::Alignment::COMPACT);
_video_size = image.image->size();
_has_alpha = image.image->has_alpha();
}
if (content->still ()) {
_video_length = Config::instance()->default_still_length() * video_frame_rate().get_value_or (film->video_frame_rate ());
} else {
_video_length = _image_content->number_of_paths ();
}
}
optional<dcp::Size>
ImageExaminer::video_size () const
{
return _video_size;
}
optional<double>
ImageExaminer::video_frame_rate () const
{
if (_image_content->video_frame_rate()) {
/* The content already knows what frame rate it should be */
return _image_content->video_frame_rate().get();
}
/* Don't know */
return {};
}
bool
ImageExaminer::yuv () const
{
/* We never convert ImageSource from YUV to RGB (though maybe sometimes we should)
so it makes sense to just say they are never YUV so the option of a conversion
to RGB is not offered.
*/
return false;
}
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