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

revise change detection again

Browse Source 
to fix debug output
This commit is contained in:
John Cupitt 2022-03-03 11:48:49 +00:00
parent 8e9fe72dea
commit eb577606a0
1 changed files with 10 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
libvips/foreign/cgifsave.c
View File

@ -93,7 +93,7 @@ typedef struct _VipsForeignSaveCgif {
/* The current colourmap, updated on a significant frame change. /* The current colourmap, updated on a significant frame change.
*/ */
VipsPel *palette_rgb; VipsPel *palette_rgb;
guint64 frame_sum; gint64 frame_sum;
/* The index frame we get libimagequant to generate. /* The index frame we get libimagequant to generate.
*/ */
@ -195,7 +195,7 @@ vips_foreign_save_cgif_write_frame( VipsForeignSaveCgif *cgif )
VipsPel * restrict p; VipsPel * restrict p;
VipsPel *rgb; VipsPel *rgb;
guint64 sum; gint64 sum;
double change; double change;
int i; int i;
CGIF_FrameConfig frame_config; CGIF_FrameConfig frame_config;
@ -237,7 +237,7 @@ vips_foreign_save_cgif_write_frame( VipsForeignSaveCgif *cgif )
p += 4; p += 4;
} }
change = VIPS_ABS( (sum - cgif->frame_sum) / n_pels ); change = VIPS_ABS( ((double) sum - cgif->frame_sum) ) / n_pels;
if( cgif->frame_sum == 0 || if( cgif->frame_sum == 0 ||
change > 0 ) { change > 0 ) {
@ -289,19 +289,19 @@ vips_foreign_save_cgif_write_frame( VipsForeignSaveCgif *cgif )
rgb += 3; rgb += 3;
} }
/* If there's a transparent pixel, it's always first.
*/
cgif->has_transparency = cgif->lp->entries[0].a == 0;
#ifdef DEBUG_PERCENT #ifdef DEBUG_PERCENT
if( percent_change > 0 ) if( change > 0 )
printf( "frame %d, %.4g%% change, new %d item colourmap\n", printf( "frame %d, change %g, new %d item colourmap\n",
page_index, percent_change, cgif->lp->count ); page_index, change, cgif->lp->count );
else else
printf( "frame %d, reusing previous %d item colourmap\n", printf( "frame %d, reusing previous %d item colourmap\n",
page_index, cgif->lp->count ); page_index, cgif->lp->count );
#endif/*DEBUG_PERCENT*/ #endif/*DEBUG_PERCENT*/
/* If there's a transparent pixel, it's always first.
*/
cgif->has_transparency = cgif->lp->entries[0].a == 0;
/* Set up cgif on first use, so we can set the first cmap as the global /* Set up cgif on first use, so we can set the first cmap as the global
* one. * one.
* *