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fix setting of iterations in magicksave 

ImageMagick uses 0 to mean unset, so we must always add 1. See
coders/gif.c.

See https://github.com/libvips/libvips/issues/1302
This commit is contained in:
John Cupitt 2019-04-29 08:43:39 +01:00
parent efadb5dc42
commit 53b43e0497
1 changed files with 4 additions and 1 deletions
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5
libvips/foreign/magicksave.c
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@ -143,9 +143,12 @@ vips_foreign_save_magick_next_image( VipsForeignSaveMagick *magick )
!vips_image_get_int( im, "gif-delay", &number ) )
image->delay = (size_t) number;
/* ImageMagick uses 0 to mean unset, so we must always add 1. See
* coders/gif.c.
*/
if( vips_image_get_typeof( im, "gif-loop" ) &&
!vips_image_get_int( im, "gif-loop", &number ) )
image->iterations = (size_t) number;
image->iterations = (size_t) (number + 1);
if( vips_image_get_typeof( im, "gif-comment" ) &&
!vips_image_get_string( im, "gif-comment", &str ) )