X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fffv1dec_template.c;h=1b7f6c4bf560432228d75e14b09421979da226dc;hb=7f3d39b21f893145dcfd33abf6f6a2c994b246ec;hp=fecdbd0025c9733d8b5366b790d8cbe11c835d5d;hpb=50ae1f7e0ff1fa00236622415039f7e28d919a25;p=ffmpeg

diff --git a/libavcodec/ffv1dec_template.c b/libavcodec/ffv1dec_template.c
index fecdbd0025c..1b7f6c4bf56 100644
--- a/libavcodec/ffv1dec_template.c
+++ b/libavcodec/ffv1dec_template.c
@@ -50,6 +50,11 @@ static av_always_inline int RENAME(decode_line)(FFV1Context *s, int w,
     for (x = 0; x < w; x++) {
         int diff, context, sign;
 
+        if (!(x & 1023)) {
+            if (is_input_end(s))
+                return AVERROR_INVALIDDATA;
+        }
+
         context = RENAME(get_context)(p, sample[1] + x, sample[0] + x, sample[1] + x);
         if (context < 0) {
             context = -context;
@@ -81,6 +86,11 @@ static av_always_inline int RENAME(decode_line)(FFV1Context *s, int w,
                         run_mode = 2;
                     }
                 }
+                while (run_count > 1 && w-x > 1) {
+                    sample[1][x] = RENAME(predict)(sample[1] + x, sample[0] + x);
+                    x++;
+                    run_count--;
+                }
                 run_count--;
                 if (run_count < 0) {
                     run_mode  = 0;