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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.
*/
#include <iostream>
#include <boost/filesystem.hpp>
#include <Magick++.h>
#include "imagemagick_content.h"
#include "imagemagick_decoder.h"
#include "image.h"
#include "film.h"
#include "exceptions.h"
#include "i18n.h"
using std::cout;
using boost::shared_ptr;
using libdcp::Size;
ImageMagickDecoder::ImageMagickDecoder (shared_ptr<const Film> f, shared_ptr<const ImageMagickContent> c)
: Decoder (f)
, VideoDecoder (f)
, _imagemagick_content (c)
, _position (0)
{
}
libdcp::Size
ImageMagickDecoder::native_size () const
{
if (!_native_size) {
using namespace MagickCore;
Magick::Image* image = new Magick::Image (_imagemagick_content->file().string());
_native_size = libdcp::Size (image->columns(), image->rows());
delete image;
}
return _native_size.get ();
}
int
ImageMagickDecoder::video_length () const
{
return _imagemagick_content->video_length ();
}
bool
ImageMagickDecoder::pass ()
{
if (_position < 0 || _position >= _imagemagick_content->video_length ()) {
return true;
}
if (_image) {
emit_video (_image, true, double (_position) / 24);
_position++;
return false;
}
Magick::Image* magick_image = new Magick::Image (_imagemagick_content->file().string ());
_native_size = libdcp::Size (magick_image->columns(), magick_image->rows());
_image.reset (new SimpleImage (PIX_FMT_RGB24, _native_size.get(), false));
using namespace MagickCore;
uint8_t* p = _image->data()[0];
for (int y = 0; y < _native_size->height; ++y) {
for (int x = 0; x < _native_size->width; ++x) {
Magick::Color c = magick_image->pixelColor (x, y);
*p++ = c.redQuantum() * 255 / QuantumRange;
*p++ = c.greenQuantum() * 255 / QuantumRange;
*p++ = c.blueQuantum() * 255 / QuantumRange;
}
}
delete magick_image;
_image = _image->crop (_film->crop(), true);
emit_video (_image, false, double (_position) / 24);
++_position;
return false;
}
PixelFormat
ImageMagickDecoder::pixel_format () const
{
/* XXX: always true? */
return PIX_FMT_RGB24;
}
bool
ImageMagickDecoder::seek (double t)
{
int const f = t * _imagemagick_content->video_frame_rate ();
if (f >= _imagemagick_content->video_length()) {
_position = 0;
return true;
}
_position = f;
return false;
}
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