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/*
Copyright (C) 2024 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 "frame_info.h"
#include <string>
using std::shared_ptr;
using std::string;
J2KFrameInfo::J2KFrameInfo(uint64_t offset_, uint64_t size_, string hash_)
: dcp::J2KFrameInfo(offset_, size_, hash_)
{
}
J2KFrameInfo::J2KFrameInfo(dcp::J2KFrameInfo const& info)
: dcp::J2KFrameInfo(info)
{
}
J2KFrameInfo::J2KFrameInfo(dcp::File& info_file, Frame frame, Eyes eyes)
{
info_file.seek(position(frame, eyes), SEEK_SET);
info_file.checked_read(&offset, sizeof(offset));
info_file.checked_read(&size, sizeof(size));
char hash_buffer[33];
info_file.checked_read(hash_buffer, 32);
hash_buffer[32] = '\0';
hash = hash_buffer;
}
long
J2KFrameInfo::position(Frame frame, Eyes eyes) const
{
switch (eyes) {
case Eyes::BOTH:
return frame * _size_on_disk;
case Eyes::LEFT:
return frame * _size_on_disk * 2;
case Eyes::RIGHT:
return frame * _size_on_disk * 2 + _size_on_disk;
default:
DCPOMATIC_ASSERT(false);
}
DCPOMATIC_ASSERT(false);
}
/** @param frame reel-relative frame */
void
J2KFrameInfo::write(dcp::File& info_file, Frame frame, Eyes eyes) const
{
info_file.seek(position(frame, eyes), SEEK_SET);
info_file.checked_write(&offset, sizeof(offset));
info_file.checked_write(&size, sizeof(size));
info_file.checked_write(hash.c_str(), hash.size());
}
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