Merge branch '8.3'

ChangeLog

@@ -38,6 +38,9 @@
 - add svgz support [Felix Bünemann]
 - rename boostrap.sh -> autogen.sh to help snapcraft
 
+19/8/16 started 8.3.4
+- better transparency handling in gifload, thanks diegocsandrim
+
 30/7/16 started 8.3.3
 - fix performance regression in 8.3.2, thanks Lovell
 - yet more robust vips file reading

configure.ac

@@ -37,9 +37,9 @@ VIPS_VERSION_STRING=$VIPS_VERSION-`date`
 #   binary interface changes backwards compatible?: increment age
 #   binary interface changes not backwards compatible?: reset age to 0
 
-LIBRARY_CURRENT=46
-LIBRARY_REVISION=3
-LIBRARY_AGE=4
+LIBRARY_CURRENT=47
+LIBRARY_REVISION=1
+LIBRARY_AGE=5
 
 # patched into include/vips/version.h
 AC_SUBST(VIPS_VERSION)

libvips/foreign/gifload.c

@@ -7,6 +7,8 @@
  * 26/7/16
  * 	- transparency was wrong if there was no EXTENSION_RECORD
  * 	- write 1, 2, 3, or 4 bands depending on file contents
+ * 19/8/16
+ * 	- better transparency detection, thanks diegocsandrim
  */
 
 /*
@@ -513,9 +515,10 @@ vips_foreign_load_gif_to_memory( VipsForeignLoadGif *gif, VipsImage *out )
 			if( ext_code == GRAPHICS_EXT_FUNC_CODE &&
 				extension &&
 				extension[0] == 4 && 
-				extension[1] == 1 ) {
+				(extension[1] & 0x1) ) {
 				/* Bytes are 4, 1, delay low, delay high,
-				 * transparency.
+				 * transparency. Bit 1 means transparency
+				 * is being set.
 				 */
 				gif->transparency = extension[4];
 				gif->has_transparency = TRUE;