Improve threshold scheduler, thumbnail info and builtin thumbnailer.

Depend on libpng 1.2 and make gdk-pixbuf a hard dependency.

Remove tumbler/tumbler-thumbnail.{c,h}. Move all related functions into
TumblerThumbnailInfo.

Improve the generation of tumbler-marshal.{c,h}, so that they can be
included in the library and be used by others.

Improve TumblerThumbnailInfo and TumblerPNGThumbnailInfo. The interface
now has functions to save fail thumbnails and pixbufs for all supported
thumbnail flavors. It can also check whether there are invalid/outdated
flavors. It also knows about the GFile's and sizes of all flavors.
Specialized thumbnailers can use TumblerThumbnailInfo to check if they
need to do something and if so, what they need to do. Once they have
a GdkPixbuf ready, they can just hand it over to the
TumblerThumbnailInfo and don't have to worry about saving.

Also improve TumblerPNGThumbnailInfo, which is an implementation of
TumblerThumbnailInfo that supports the thumbnail cache defined in the
Thumbnail Managing Standard.

The built-in pixbuf thumbnailer is almost completely implemented now.
However, it doesn't support cropped thumbnails yet.

This commit also adds a new method tumbler_scheduler_emit_uri_error()
which can be used to emit an error for only one URI. Finally, it
includes a few code cleanups.

1 files changed, 1 insertions, 0 deletions

diff --git a/tumbler/tumbler.h b/tumbler/tumbler.h
index c312722..2a5f812 100644
--- a/tumbler/tumbler.h
+++ b/tumbler/tumbler.h
@@ -27,6 +27,7 @@
 #include <tumbler/tumbler-enum-types.h>
 #include <tumbler/tumbler-error.h>
 #include <tumbler/tumbler-marshal.h>
+#include <tumbler/tumbler-thumbnail-info.h>
 #include <tumbler/tumbler-thumbnail.h>
 
 #undef TUMBLER_INSIDE_TUMBLER_H