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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 "film.h"
#include "exceptions.h"
#include "i18n.h"
using std::cout;
using boost::shared_ptr;
using libdcp::Size;
ImageDecoder::ImageDecoder (shared_ptr<const Film> f, shared_ptr<const ImageContent> c)
: Decoder (f)
, VideoDecoder (f, c)
, _image_content (c)
{
}
void
ImageDecoder::pass ()
{
if (_video_position >= _image_content->video_length ()) {
return;
}
if (_image && _image_content->still ()) {
video (_image, true, _video_position);
return;
}
Magick::Image* magick_image = 0;
boost::filesystem::path const path = _image_content->path (_image_content->still() ? 0 : _video_position);
try {
magick_image = new Magick::Image (path.string ());
} catch (...) {
throw OpenFileError (path);
}
libdcp::Size size (magick_image->columns(), magick_image->rows());
_image.reset (new Image (PIX_FMT_RGB24, size, true));
using namespace MagickCore;
uint8_t* p = _image->data()[0];
for (int y = 0; y < size.height; ++y) {
uint8_t* q = p;
for (int x = 0; x < size.width; ++x) {
Magick::Color c = magick_image->pixelColor (x, y);
*q++ = c.redQuantum() * 255 / QuantumRange;
*q++ = c.greenQuantum() * 255 / QuantumRange;
*q++ = c.blueQuantum() * 255 / QuantumRange;
}
p += _image->stride()[0];
}
delete magick_image;
video (_image, false, _video_position);
}
void
ImageDecoder::seek (VideoContent::Frame frame, bool)
{
_video_position = frame;
}
bool
ImageDecoder::done () const
{
return _video_position >= _image_content->video_length ();
}
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