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cgifsave: Make loop counts more accurate (#2709)

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* cgifsave: Added "noloop" option

* cgifsave: Change loop count logic

* make sure nsgifload returns the correct loop count

* Revert "make sure nsgifload returns the correct loop count"

This reverts commit 77550f097940944492d4178a783fc4e73c7a769f.

* Add fallback
This commit is contained in:
Essem 2022-03-10 06:30:57 -06:00 committed by GitHub
parent 356edc3779
commit d4eb2e82d2
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 11 additions and 0 deletions
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8
libvips/foreign/cgifsave.c
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@ -310,11 +310,19 @@ vips_foreign_save_cgif_write_frame( VipsForeignSaveCgif *cgif )
*/
if( !cgif->cgif_context ) {
cgif->cgif_config.pGlobalPalette = cgif->palette_rgb;
#ifdef HAVE_CGIF_ATTR_NO_LOOP
cgif->cgif_config.attrFlags = CGIF_ATTR_IS_ANIMATED | ( cgif->loop == 1 ? CGIF_ATTR_NO_LOOP : 0 );
#else
cgif->cgif_config.attrFlags = CGIF_ATTR_IS_ANIMATED;
#endif/*HAVE_CGIF_ATTR_NO_LOOP*/
cgif->cgif_config.width = frame_rect->width;
cgif->cgif_config.height = frame_rect->height;
cgif->cgif_config.numGlobalPaletteEntries = cgif->lp->count;
#ifdef HAVE_CGIF_ATTR_NO_LOOP
cgif->cgif_config.numLoops = cgif->loop > 1 ? cgif->loop - 1 : cgif->loop;
#else
cgif->cgif_config.numLoops = cgif->loop;
#endif/*HAVE_CGIF_ATTR_NO_LOOP*/
cgif->cgif_config.pWriteFn = vips__cgif_write;
cgif->cgif_config.pContext = (void *) cgif->target;

3
meson.build
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@ -238,6 +238,9 @@ if quantisation_package.found()
if cgif_dep.found()
libvips_deps += cgif_dep
cfg_var.set('HAVE_CGIF', '1')
if cc.compiles('#include <cgif.h>\nint i = CGIF_ATTR_NO_LOOP;', name: 'Has CGIF_ATTR_NO_LOOP', dependencies: cgif_dep)
cfg_var.set('HAVE_CGIF_ATTR_NO_LOOP', '1')
endif
endif
endif