Allow environment variables SYNFIG_DISABLE_REMOVE_DUPS, SYNFIG_DISABLE_OPTIMIZE,...

[synfig.git] / synfig-core / trunk / src / modules / mod_magickpp / trgt_magickpp.cpp

diff --git a/synfig-core/trunk/src/modules/mod_magickpp/trgt_magickpp.cpp b/synfig-core/trunk/src/modules/mod_magickpp/trgt_magickpp.cpp
index 7ddaee9..9c55627 100644 (file)
--- a/synfig-core/trunk/src/modules/mod_magickpp/trgt_magickpp.cpp
+++ b/synfig-core/trunk/src/modules/mod_magickpp/trgt_magickpp.cpp
@@ -109,11 +109,23 @@ magickpp_trgt::~magickpp_trgt()
                synfig::info("clearing old image list");
                images.clear();
 
-               synfig::info("removing duplicate frames");
-               RemoveDuplicateLayers(&image_list, &exceptionInfo);
-
-               synfig::info("optimizing frames");
-               OptimizeImageTransparency(image_list,&exceptionInfo);
+               if (!getenv("SYNFIG_DISABLE_REMOVE_DUPS"))
+               {
+                       synfig::info("removing duplicate frames");
+                       RemoveDuplicateLayers(&image_list, &exceptionInfo);
+               }
+
+               if (!getenv("SYNFIG_DISABLE_OPTIMIZE"))
+               {
+                       synfig::info("optimizing layers");
+                       image_list = OptimizeImageLayers(image_list,&exceptionInfo);
+               }
+
+               if (!getenv("SYNFIG_DISABLE_OPTIMIZE_TRANS"))
+               {
+                       synfig::info("optimizing layer transparency");
+                       OptimizeImageTransparency(image_list,&exceptionInfo);
+               }
 
                synfig::info("recreating image list");
                insertImages(&images, image_list);
@@ -142,7 +154,8 @@ magickpp_trgt::~magickpp_trgt()
        synfig::info("writing %d images to %s", images.size(), filename.c_str());
        Magick::writeImages(images.begin(), images.end(), filename);
 
-       if (buffer != NULL) delete [] buffer;
+       if (buffer1 != NULL) delete [] buffer1;
+       if (buffer2 != NULL) delete [] buffer2;
        if (color_buffer != NULL) delete [] color_buffer;
 }
 
@@ -159,14 +172,24 @@ magickpp_trgt::init()
        width = desc.get_w();
        height = desc.get_h();
 
-       buffer = new unsigned char[4*width*height];
-       if (buffer == NULL)
+       start_pointer = NULL;
+
+       buffer1 = new unsigned char[4*width*height];
+       if (buffer1 == NULL)
+               return false;
+
+       buffer2 = new unsigned char[4*width*height];
+       if (buffer2 == NULL)
+       {
+               delete [] buffer1;
                return false;
+       }
 
        color_buffer = new Color[width];
        if (color_buffer == NULL)
        {
-               delete [] buffer;
+               delete [] buffer1;
+               delete [] buffer2;
                return false;
        }
 
@@ -176,7 +199,7 @@ magickpp_trgt::init()
 void
 magickpp_trgt::end_frame()
 {
-       Magick::Image image(width, height, "RGBA", Magick::CharPixel, buffer);
+       Magick::Image image(width, height, "RGBA", Magick::CharPixel, start_pointer);
        if (transparent && images.begin() != images.end())
                (images.end()-1)->gifDisposeMethod(Magick::BackgroundDispose);
        images.push_back(image);
@@ -185,7 +208,13 @@ magickpp_trgt::end_frame()
 bool
 magickpp_trgt::start_frame(synfig::ProgressCallback *callback)
 {
-       buffer_pointer = buffer;
+       previous_buffer_pointer = start_pointer;
+
+       if (start_pointer == buffer1)
+               start_pointer = buffer_pointer = buffer2;
+       else
+               start_pointer = buffer_pointer = buffer1;
+
        transparent = false;
        return true;
 }
@@ -199,11 +228,14 @@ magickpp_trgt::start_scanline(int scanline)
 bool
 magickpp_trgt::end_scanline()
 {
-       convert_color_format(buffer_pointer, color_buffer, width, PF_RGB|PF_A, gamma());
+       convert_color_format(buffer_pointer, color_buffer,
+                                                width, PF_RGB|PF_A, gamma());
 
        if (!transparent)
                for (int i = 0; i < width; i++)
-                       if (buffer_pointer[i*4 + 3] < 128)
+                       if (previous_buffer_pointer &&                                  // this isn't the first frame
+                               buffer_pointer[i*4 + 3] < 128 &&                        // our pixel is transparent
+                               !(previous_buffer_pointer[i*4 + 3] < 128))      // the previous frame's pixel wasn't
                        {
                                transparent = true;
                                break;
@@ -211,5 +243,8 @@ magickpp_trgt::end_scanline()
 
        buffer_pointer += 4 * width;
 
+       if (previous_buffer_pointer)
+               previous_buffer_pointer += 4 * width;
+
        return true;
 }