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/*
Copyright (C) 2012 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.
*/
/** @file src/imagemagick_encoder.cc
* @brief An encoder that writes image files using ImageMagick (and does nothing with audio).
*/
#include <stdexcept>
#include <vector>
#include <sstream>
#include <iomanip>
#include <iostream>
#include <fstream>
#include <boost/filesystem.hpp>
#include <Magick++/Image.h>
#include "imagemagick_encoder.h"
#include "film.h"
#include "options.h"
#include "exceptions.h"
#include "image.h"
#include "subtitle.h"
using std::string;
using std::ofstream;
using boost::shared_ptr;
/** @param f Film that we are encoding.
* @param o Options.
*/
ImageMagickEncoder::ImageMagickEncoder (shared_ptr<const Film> f, shared_ptr<const Options> o)
: Encoder (f, o)
{
}
void
ImageMagickEncoder::process_video (shared_ptr<Image> image, int frame, shared_ptr<Subtitle> sub)
{
shared_ptr<Image> scaled = image->scale_and_convert_to_rgb (_opt->out_size, _opt->padding, _film->scaler());
shared_ptr<Image> compact (new CompactImage (scaled));
string tmp_file = _opt->frame_out_path (frame, true);
Magick::Image thumb (compact->size().width, compact->size().height, "RGB", MagickCore::CharPixel, compact->data()[0]);
thumb.magick ("PNG");
thumb.write (tmp_file);
boost::filesystem::rename (tmp_file, _opt->frame_out_path (frame, false));
if (sub) {
float const x_scale = float (_opt->out_size.width) / _film->size().width;
float const y_scale = float (_opt->out_size.height) / _film->size().height;
string tmp_metadata_file = _opt->frame_out_path (frame, false, ".sub");
ofstream metadata (tmp_metadata_file.c_str ());
Size new_size = sub->image()->size ();
new_size.width *= x_scale;
new_size.height *= y_scale;
shared_ptr<Image> scaled = sub->image()->scale (new_size, _film->scaler());
shared_ptr<Image> compact (new CompactImage (scaled));
string tmp_sub_file = _opt->frame_out_path (frame, true, ".sub.png");
Magick::Image sub_thumb (compact->size().width, compact->size().height, "RGBA", MagickCore::CharPixel, compact->data()[0]);
sub_thumb.magick ("PNG");
sub_thumb.write (tmp_sub_file);
boost::filesystem::rename (tmp_sub_file, _opt->frame_out_path (frame, false, ".sub.png"));
metadata << "x " << sub->position().x << "\n"
<< "y " << sub->position().y << "\n";
metadata.close ();
boost::filesystem::rename (tmp_metadata_file, _opt->frame_out_path (frame, false, ".sub"));
}
frame_done (frame);
}
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