Merge image related changes from the render branch. This includes the image

tile cache code in imbuf, but it is not hooked up to the render engine.


Imbuf module: some small refactoring and removing a lot of unused or old code
(about 6.5k lines).

* Added a ImFileType struct with callbacks to make adding an file format type,
  or making changes to the API easier.
* Move imbuf init/exit code into IMB_init()/IMB_exit() functions.
* Increased mipmap levels from 10 to 20, you run into this limit already with
  a 2k image.
* Removed hamx, amiga, anim5 format support.
* Removed colormap saving, only simple colormap code now for reading tga.
* Removed gen_dynlibtiff.py, editing this is almost as much work as just
  editing the code directly.
* Functions removed that were only used for sequencer plugin API:
  IMB_anim_nextpic, IMB_clever_double, IMB_antialias, IMB_gamwarp,
  IMB_scalefieldImBuf, IMB_scalefastfieldImBuf, IMB_onethird, IMB_halflace,
  IMB_dit0, IMB_dit2, IMB_cspace
* Write metadata info into OpenEXR images. Can be viewed with the command
  line utility 'exrheader'

For the image tile cache code, see this page:
http://wiki.blender.org/index.php/Dev:2.5/Source/Imaging/ImageTileCache

1 files changed, 80 insertions, 0 deletions

diff --git a/source/blender/imbuf/intern/IMB_metadata.h b/source/blender/imbuf/intern/IMB_metadata.h
new file mode 100644
index 00000000000..751978a88da
--- /dev/null
+++ b/source/blender/imbuf/intern/IMB_metadata.h
@@ -0,0 +1,80 @@
+/**
+ * $Id: IMB_metadata.h 28607 2010-05-06 07:10:56Z campbellbarton $ 
+ *
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * The Original Code is Copyright (C) 2005 Blender Foundation
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): Austin Benesh. Ton Roosendaal.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#ifndef _IMB_IMGINFO_H
+#define _IMB_IMGINFO_H
+
+struct ImBuf;
+
+typedef struct ImMetaData {
+	struct ImMetaData *next, *prev;
+	char* key;
+	char* value;
+	int len;
+} ImMetaData;
+
+/** The metadata is a list of key/value pairs (both char*) that can me 
+	saved in the header of several image formats.
+	Apart from some common keys like 
+	'Software' and 'Description' (png standard) we'll use keys within the 
+	Blender namespace, so should be called 'Blender::StampInfo' or 'Blender::FrameNum'
+	etc... 
+*/
+
+
+/* free blender ImMetaData struct */
+void IMB_metadata_free(struct ImBuf* img);
+
+/** read the field from the image info into the field 
+ *  @param img - the ImBuf that contains the image data
+ *  @param key - the key of the field
+ *  @param value - the data in the field, first one found with key is returned, 
+				  memory has to be allocated by user.
+ *  @param len - length of value buffer allocated by user.
+ *  @return    - 1 (true) if ImageInfo present and value for the key found, 0 (false) otherwise
+ */
+int IMB_metadata_get_field(struct ImBuf* img, const char* key, char* value, int len);
+
+/** set user data in the ImMetaData struct, which has to be allocated with IMB_metadata_create
+ *  before calling this function.
+ *  @param img - the ImBuf that contains the image data
+ *  @param key - the key of the field
+ *  @param value - the data to be written to the field. zero terminated string
+ *  @return    - 1 (true) if ImageInfo present, 0 (false) otherwise
+ */
+int IMB_metadata_add_field(struct ImBuf* img, const char* key, const char* field);
+
+/** delete the key/field par in the ImMetaData struct.
+ * @param img - the ImBuf that contains the image data
+ * @param key - the key of the field
+ * @return - 1 (true) if delete the key/field, 0 (false) otherwise
+ */
+int IMB_metadata_del_field(struct ImBuf *img, const char *key);
+
+#endif /* _IMB_IMGINFO_H */