X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavfilter%2Fvf_delogo.c;h=63c353946753749a55f5313077adc0c7061e2033;hb=21f946840260da150affd9a20cc35b3d56194ba6;hp=8058ea901e60e5e696f45dcb885489ee0a91ee22;hpb=2630f7f709049113dc03d6b999efad6acc423d67;p=ffmpeg

diff --git a/libavfilter/vf_delogo.c b/libavfilter/vf_delogo.c
index 8058ea901e6..63c35394675 100644
--- a/libavfilter/vf_delogo.c
+++ b/libavfilter/vf_delogo.c
@@ -75,13 +75,13 @@ static void apply_delogo(uint8_t *dst, int dst_linesize,
     yclipb = FFMAX(logo_y+logo_h-h, 0);
 
     logo_x1 = logo_x + xclipl;
-    logo_x2 = logo_x + logo_w - xclipr;
+    logo_x2 = logo_x + logo_w - xclipr - 1;
     logo_y1 = logo_y + yclipt;
-    logo_y2 = logo_y + logo_h - yclipb;
+    logo_y2 = logo_y + logo_h - yclipb - 1;
 
-    topleft  = src+logo_y1     * src_linesize+logo_x1;
-    topright = src+logo_y1     * src_linesize+logo_x2-1;
-    botleft  = src+(logo_y2-1) * src_linesize+logo_x1;
+    topleft  = src+logo_y1 * src_linesize+logo_x1;
+    topright = src+logo_y1 * src_linesize+logo_x2;
+    botleft  = src+logo_y2 * src_linesize+logo_x1;
 
     if (!direct)
         av_image_copy_plane(dst, dst_linesize, src, src_linesize, w, h);
@@ -89,7 +89,7 @@ static void apply_delogo(uint8_t *dst, int dst_linesize,
     dst += (logo_y1 + 1) * dst_linesize;
     src += (logo_y1 + 1) * src_linesize;
 
-    for (y = logo_y1+1; y < logo_y2-1; y++) {
+    for (y = logo_y1+1; y < logo_y2; y++) {
         left_sample = topleft[src_linesize*(y-logo_y1)]   +
                       topleft[src_linesize*(y-logo_y1-1)] +
                       topleft[src_linesize*(y-logo_y1+1)];
@@ -99,19 +99,19 @@ static void apply_delogo(uint8_t *dst, int dst_linesize,
 
         for (x = logo_x1+1,
              xdst = dst+logo_x1+1,
-             xsrc = src+logo_x1+1; x < logo_x2-1; x++, xdst++, xsrc++) {
+             xsrc = src+logo_x1+1; x < logo_x2; x++, xdst++, xsrc++) {
 
-            if (show && (y == logo_y1+1 || y == logo_y2-2 ||
-                         x == logo_x1+1 || x == logo_x2-2)) {
+            if (show && (y == logo_y1+1 || y == logo_y2-1 ||
+                         x == logo_x1+1 || x == logo_x2-1)) {
                 *xdst = 0;
                 continue;
             }
 
             /* Weighted interpolation based on relative distances, taking SAR into account */
-            weightl = (uint64_t)              (logo_x2-1-x) * (y-logo_y1) * (logo_y2-1-y) * sar.den;
-            weightr = (uint64_t)(x-logo_x1)                 * (y-logo_y1) * (logo_y2-1-y) * sar.den;
-            weightt = (uint64_t)(x-logo_x1) * (logo_x2-1-x)               * (logo_y2-1-y) * sar.num;
-            weightb = (uint64_t)(x-logo_x1) * (logo_x2-1-x) * (y-logo_y1)                 * sar.num;
+            weightl = (uint64_t)              (logo_x2-x) * (y-logo_y1) * (logo_y2-y) * sar.den;
+            weightr = (uint64_t)(x-logo_x1)               * (y-logo_y1) * (logo_y2-y) * sar.den;
+            weightt = (uint64_t)(x-logo_x1) * (logo_x2-x)               * (logo_y2-y) * sar.num;
+            weightb = (uint64_t)(x-logo_x1) * (logo_x2-x) * (y-logo_y1)               * sar.num;
 
             interp =
                 left_sample * weightl
@@ -262,13 +262,13 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
 
         apply_delogo(out->data[plane], out->linesize[plane],
                      in ->data[plane], in ->linesize[plane],
-                     FF_CEIL_RSHIFT(inlink->w, hsub),
-                     FF_CEIL_RSHIFT(inlink->h, vsub),
+                     AV_CEIL_RSHIFT(inlink->w, hsub),
+                     AV_CEIL_RSHIFT(inlink->h, vsub),
                      sar, s->x>>hsub, s->y>>vsub,
                      /* Up and left borders were rounded down, inject lost bits
                       * into width and height to avoid error accumulation */
-                     FF_CEIL_RSHIFT(s->w + (s->x & ((1<<hsub)-1)), hsub),
-                     FF_CEIL_RSHIFT(s->h + (s->y & ((1<<vsub)-1)), vsub),
+                     AV_CEIL_RSHIFT(s->w + (s->x & ((1<<hsub)-1)), hsub),
+                     AV_CEIL_RSHIFT(s->h + (s->y & ((1<<vsub)-1)), vsub),
                      s->band>>FFMIN(hsub, vsub),
                      s->show, direct);
     }