1 /* === S Y N F I G ========================================================= */
2 /*! \file trgt_magickpp.cpp
3 ** \brief Magick++ Target Module
8 ** Copyright 2007 Chris Moore
10 ** This package is free software; you can redistribute it and/or
11 ** modify it under the terms of the GNU General Public License as
12 ** published by the Free Software Foundation; either version 2 of
13 ** the License, or (at your option) any later version.
15 ** This package is distributed in the hope that it will be useful,
16 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 ** General Public License for more details.
21 ** === N O T E S ===========================================================
23 ** ========================================================================= */
25 /* === H E A D E R S ======================================================= */
37 #include "trgt_magickpp.h"
41 /* === M A C R O S ========================================================= */
43 using namespace synfig;
47 /* === G L O B A L S ======================================================= */
49 SYNFIG_TARGET_INIT(magickpp_trgt);
50 SYNFIG_TARGET_SET_NAME(magickpp_trgt,"magick++");
51 SYNFIG_TARGET_SET_EXT(magickpp_trgt,"gif");
52 SYNFIG_TARGET_SET_VERSION(magickpp_trgt,"0.1");
53 SYNFIG_TARGET_SET_CVS_ID(magickpp_trgt,"$Id$");
55 /* === M E T H O D S ======================================================= */
57 template <class Container>
58 MagickLib::Image* copy_image_list(Container& container)
60 typedef typename Container::iterator Iter;
61 MagickLib::Image* previous = 0;
62 MagickLib::Image* first = NULL;
63 MagickLib::ExceptionInfo exceptionInfo;
64 MagickLib::GetExceptionInfo(&exceptionInfo);
65 for (Iter iter = container.begin(); iter != container.end(); ++iter)
67 MagickLib::Image* current;
71 current = CloneImage(iter->image(), 0, 0, Magick::MagickTrue, &exceptionInfo);
73 catch(Magick::Warning warning) {
74 synfig::warning("exception '%s'", warning.what());
77 if (!first) first = current;
79 current->previous = previous;
82 if ( previous != 0) previous->next = current;
89 magickpp_trgt::~magickpp_trgt()
91 MagickLib::ExceptionInfo exceptionInfo;
92 MagickLib::GetExceptionInfo(&exceptionInfo);
96 // check whether this file format supports multiple-image files
97 Magick::Image image(*(images.begin()));
98 image.fileName(filename);
101 SetImageInfo(image.imageInfo(),Magick::MagickTrue,&exceptionInfo);
103 catch(Magick::Warning warning) {
104 synfig::warning("exception '%s'", warning.what());
107 // the file type is now in image.imageInfo()->magick and
108 // image.adjoin() tells us whether we can write to a single file
111 synfig::info("joining images");
112 unsigned int delay = round_to_int(100.0 / desc.get_frame_rate());
113 for_each(images.begin(), images.end(), Magick::animationDelayImage(delay));
115 // optimize the images (only write the pixels that change from frame to frame
116 #ifdef HAVE_MAGICK_OPTIMIZE
117 // make a completely new image list
118 // this is required because:
119 // RemoveDuplicateLayers wants a linked list of images, and removes some of them
120 // when it removes an image, it invalidates it using DeleteImageFromList, but we still have it in our container
121 // when we destroy our container, the image is re-freed, failing an assertion
123 synfig::info("copying image list");
124 MagickLib::Image *image_list = copy_image_list(images);
126 synfig::info("clearing old image list");
129 if (!getenv("SYNFIG_DISABLE_REMOVE_DUPS"))
131 synfig::info("removing duplicate frames");
134 RemoveDuplicateLayers(&image_list, &exceptionInfo);
136 catch(Magick::Warning warning) {
137 synfig::warning("exception '%s'", warning.what());
141 if (!getenv("SYNFIG_DISABLE_OPTIMIZE"))
143 synfig::info("optimizing layers");
146 image_list = OptimizeImageLayers(image_list,&exceptionInfo);
148 catch(Magick::Warning warning) {
149 synfig::warning("exception '%s'", warning.what());
153 if (!getenv("SYNFIG_DISABLE_OPTIMIZE_TRANS"))
155 synfig::info("optimizing layer transparency");
158 OptimizeImageTransparency(image_list,&exceptionInfo);
160 catch(Magick::Warning warning) {
161 synfig::warning("exception '%s'", warning.what());
165 synfig::info("recreating image list");
166 insertImages(&images, image_list);
168 synfig::info("not optimizing images");
169 // DeconstructImages is available in ImageMagic 6.2.* but it doesn't take
170 // the 'dispose' method into account, so for frames with transparency where
171 // nothing is moving, we end up with objects disappearing when they shouldn't
173 // linkImages(images.begin(), images.end());
174 // MagickLib::Image* new_images = DeconstructImages(images.begin()->image(),&exceptionInfo);
175 // unlinkImages(images.begin(), images.end());
177 // insertImages(&images, new_images);
182 // if we can't write multiple images to a file of this type,
183 // include '%04d' in the filename, so the files will be numbered
184 // with a fixed width, '0'-padded number
185 synfig::info("can't join images of this type - numbering instead");
186 filename = (filename_sans_extension(filename) + ".%04d" + filename_extension(filename));
189 synfig::info("writing %d image%s to %s", images.size(), images.size() == 1 ? "" : "s", filename.c_str());
192 Magick::writeImages(images.begin(), images.end(), filename);
194 catch(Magick::Warning warning) {
195 synfig::warning("exception '%s'", warning.what());
198 catch(Magick::Warning warning) {
199 synfig::warning("exception '%s'", warning.what());
201 catch(Magick::Error error) {
202 synfig::error("exception '%s'", error.what());
205 synfig::error("unknown exception");
208 if (buffer1 != NULL) delete [] buffer1;
209 if (buffer2 != NULL) delete [] buffer2;
210 if (color_buffer != NULL) delete [] color_buffer;
214 magickpp_trgt::set_rend_desc(RendDesc *given_desc)
221 magickpp_trgt::init()
223 width = desc.get_w();
224 height = desc.get_h();
226 start_pointer = NULL;
228 buffer1 = new unsigned char[4*width*height];
232 buffer2 = new unsigned char[4*width*height];
239 color_buffer = new Color[width];
240 if (color_buffer == NULL)
251 magickpp_trgt::end_frame()
253 Magick::Image image(width, height, "RGBA", Magick::CharPixel, start_pointer);
254 if (transparent && images.begin() != images.end())
255 (images.end()-1)->gifDisposeMethod(Magick::BackgroundDispose);
256 images.push_back(image);
260 magickpp_trgt::start_frame(synfig::ProgressCallback *callback)
262 previous_buffer_pointer = start_pointer;
264 if (start_pointer == buffer1)
265 start_pointer = buffer_pointer = buffer2;
267 start_pointer = buffer_pointer = buffer1;
274 magickpp_trgt::start_scanline(int scanline)
280 magickpp_trgt::end_scanline()
282 convert_color_format(buffer_pointer, color_buffer,
283 width, PF_RGB|PF_A, gamma());
286 for (int i = 0; i < width; i++)
287 if (previous_buffer_pointer && // this isn't the first frame
288 buffer_pointer[i*4 + 3] < 128 && // our pixel is transparent
289 !(previous_buffer_pointer[i*4 + 3] < 128)) // the previous frame's pixel wasn't
295 buffer_pointer += 4 * width;
297 if (previous_buffer_pointer)
298 previous_buffer_pointer += 4 * width;