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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_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 (
boost::shared_ptr<Film> f, DecodeOptions o)
: Decoder (f, o)
, VideoDecoder (f, o)
{
if (boost::filesystem::is_directory (_film->content_path())) {
for (
boost::filesystem::directory_iterator i = boost::filesystem::directory_iterator (_film->content_path());
i != boost::filesystem::directory_iterator();
++i) {
if (still_image_file (i->path().string())) {
_files.push_back (i->path().string());
}
}
} else {
_files.push_back (_film->content_path ());
}
_iter = _files.begin ();
}
libdcp::Size
ImageMagickDecoder::native_size () const
{
if (_files.empty ()) {
throw DecodeError (_("no still image files found"));
}
/* Look at the first file and assume its size holds for all */
using namespace MagickCore;
Magick::Image* image = new Magick::Image (_film->content_path ());
libdcp::Size const s = libdcp::Size (image->columns(), image->rows());
delete image;
return s;
}
bool
ImageMagickDecoder::pass ()
{
if (_iter == _files.end()) {
if (video_frame() >= _film->still_duration_in_frames()) {
return true;
}
repeat_last_video ();
return false;
}
Magick::Image* magick_image = new Magick::Image (_film->content_path ());
libdcp::Size size = native_size ();
shared_ptr<Image> image (new SimpleImage (PIX_FMT_RGB24, size, false));
using namespace MagickCore;
uint8_t* p = image->data()[0];
for (int y = 0; y < size.height; ++y) {
for (int x = 0; x < 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, 0);
++_iter;
return false;
}
PixelFormat
ImageMagickDecoder::pixel_format () const
{
/* XXX: always true? */
return PIX_FMT_RGB24;
}
bool
ImageMagickDecoder::seek_to_last ()
{
if (_iter == _files.end()) {
_iter = _files.begin();
} else {
--_iter;
}
return false;
}
bool
ImageMagickDecoder::seek (double t)
{
int const f = t * frames_per_second();
_iter = _files.begin ();
for (int i = 0; i < f; ++i) {
if (_iter == _files.end()) {
return true;
}
++_iter;
}
return false;
}
void
ImageMagickDecoder::film_changed (Film::Property p)
{
if (p == Film::CROP) {
OutputChanged ();
}
}
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