sergiotarxz/libvips
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

limit tile width for svgload

Browse Source 
librsvg starts to fail if any single tiles has an axis over 32767
pixels. Break up very wide images to fix this.

See:

https://github.com/jcupitt/libvips/issues/732
This commit is contained in:
John Cupitt 2017-09-09 12:23:11 +01:00
parent 8970df2e1f
commit 592710dd6d
1 changed files with 12 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
libvips/foreign/svgload.c
View File

@ -216,6 +216,7 @@ vips_foreign_load_svg_load( VipsForeignLoad *load )
int tile_width;
int tile_height;
int n_lines;
int max_tiles;
/* Use this to pick a tile height for our strip cache.
*/
@ -231,12 +232,19 @@ vips_foreign_load_svg_load( VipsForeignLoad *load )
NULL, vips_foreign_load_svg_generate, NULL, svg, NULL ) )
return( -1 );
/* Don't use tilecache to keep the number of calls to
* rsvg_handle_render_cairo() low. Don't thread the cache, we rely on
* locking to keep rsvg single-threaded.
/* librsvg starts to fail if any axis in a single render call is over
* 32767. Use a tilecache so we can render very wide images, though we
* set it up like a linecache.
*
* Don't thread the cache: we rely on this to keep calls to rsvg
* single-threaded.
*/
if( vips_linecache( t[0], &t[1],
max_tiles = 3 * VIPS_ROUND_UP( t[0]->Xsize, 30000 ) / 30000;
if( vips_tilecache( t[0], &t[1],
"tile_width", 30000,
"tile_height", tile_height,
"max_tiles", max_tiles,
"access", VIPS_ACCESS_SEQUENTIAL,
NULL ) )
return( -1 );
if( vips_image_write( t[1], load->real ) )