avfilter/vf_perspective: factor u cliping code

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
12 years ago · 3b2e99fe9e
parent c11c180132
commit 3b2e99fe9e
1 changed files with 4 additions and 8 deletions
--- a/libavfilter/vf_perspective.c
+++ b/libavfilter/vf_perspective.c
@ -301,19 +301,15 @@ static void resample_linear(PerspectiveContext *s,
                    sum   = (sum + (1 << (SUB_PIXEL_BITS - 1))) >> SUB_PIXEL_BITS;
                }
            } else {
+                if (u < 0)
+                    u = 0;
+                else
+                    u = w - 1;
                if ((unsigned)v < (unsigned)(h - 1)){
-                    if (u < 0)
-                        u = 0;
-                    else
-                        u = w - 1;
                    index = u + v * src_linesize;
                    sum   = subVI * src[index] + subV * src[index + src_linesize];
                    sum   = (sum + (1 << (SUB_PIXEL_BITS - 1))) >> SUB_PIXEL_BITS;
                } else {
-                    if (u < 0)
-                        u = 0;
-                    else
-                        u = w - 1;
                    if (v < 0)
                        v = 0;
                    else