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/*
Copyright (C) 2012-2013 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 <iostream>
#include <boost/filesystem.hpp>
#include <Magick++.h>
#include "image_content.h"
#include "image_decoder.h"
#include "image.h"
#include "magick_image_proxy.h"
#include "j2k_image_proxy.h"
#include "film.h"
#include "exceptions.h"
#include "i18n.h"
using std::cout;
using boost::shared_ptr;
using dcp::Size;
ImageDecoder::ImageDecoder (shared_ptr<const ImageContent> c)
: VideoDecoder (c)
, _image_content (c)
, _video_position (0)
{
}
bool
ImageDecoder::pass ()
{
if (_video_position >= _image_content->video_length()) {
return true;
}
if (!_image_content->still() || !_image) {
/* Either we need an image or we are using moving images, so load one */
boost::filesystem::path path = _image_content->path (_image_content->still() ? 0 : _video_position);
if (valid_j2k_file (path)) {
/* We can't extract image size from a JPEG2000 codestream without decoding it,
so pass in the image content's size here.
*/
_image.reset (new J2KImageProxy (path, _image_content->video_size ()));
} else {
_image.reset (new MagickImageProxy (path));
}
}
video (_image, _video_position);
++_video_position;
return false;
}
void
ImageDecoder::seek (ContentTime time, bool accurate)
{
VideoDecoder::seek (time, accurate);
_video_position = time.frames (_image_content->video_frame_rate ());
}
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