Author: stefano
Date: Sun Jul 12 16:16:45 2009
New Revision: 4681
Log:
Fix off-by-one boundary condition logic, make the filter correctly
display the leftmost column.
Modified:
libavfilter/vf_hflip.c
Modified: libavfilter/vf_hflip.c
==============================================================================
--- libavfilter/vf_hflip.c Sun Jul 12 13:27:36 2009 (r4680)
+++ libavfilter/vf_hflip.c Sun Jul 12 16:16:45 2009 (r4681)
@@ -57,7 +57,7 @@ static void draw_slice(AVFilterLink *lin
/* luma plane */
outrow = out->data[0] + y * out->linesize[0];
- inrow = in-> data[0] + y * in-> linesize[0] + in->w;
+ inrow = in-> data[0] + y * in-> linesize[0] + in->w -1;
for(i = 0; i < h; i++) {
for(j = 0; j < link->w; j++)
outrow[j] = inrow[-j];
@@ -70,7 +70,7 @@ static void draw_slice(AVFilterLink *lin
if (in->data[plane]) {
outrow = out->data[plane] + (y>>flip->vsub) * out->linesize[plane];
inrow = in-> data[plane] + (y>>flip->vsub) * in-> linesize[plane]
+
- (link->w >> flip->hsub);
+ (link->w >> flip->hsub) -1;
for(i = 0; i < h >> flip->vsub; i++) {
for(j = 0; j < link->w >> flip->hsub; j++)
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