[FFmpeg-cvslog] avcodec/vp56: Fix sign typo

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Fri Feb 24 21:05:33 2017 +0100| [513a3494396d0a20233273b3cadcb5ee86485d5c] | committer: Michael Niedermayer

avcodec/vp56: Fix sign typo

Fixes: 664/clusterfuzz-testcase-4917047475568640

The change to fate is due to a truncated last frames which is now detected as damaged.

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=513a3494396d0a20233273b3cadcb5ee86485d5c
---

 libavcodec/vp5.c   | 2 +-
 libavcodec/vp6.c   | 2 +-
 tests/ref/fate/vp5 | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/libavcodec/vp5.c b/libavcodec/vp5.c
index aba177c..54db620 100644
--- a/libavcodec/vp5.c
+++ b/libavcodec/vp5.c
@@ -180,7 +180,7 @@ static int vp5_parse_coeff(VP56Context *s)
     int b, i, cg, idx, ctx, ctx_last;
     int pt = 0;    /* plane type (0 for Y, 1 for U or V) */
 
-    if (c->end >= c->buffer && c->bits >= 0) {
+    if (c->end <= c->buffer && c->bits >= 0) {
         av_log(s->avctx, AV_LOG_ERROR, "End of AC stream reached in vp5_parse_coeff\n");
         return AVERROR_INVALIDDATA;
     }
diff --git a/libavcodec/vp6.c b/libavcodec/vp6.c
index 7f0a9b7..662126c 100644
--- a/libavcodec/vp6.c
+++ b/libavcodec/vp6.c
@@ -450,7 +450,7 @@ static int vp6_parse_coeff(VP56Context *s)
     int b, i, cg, idx, ctx;
     int pt = 0;    /* plane type (0 for Y, 1 for U or V) */
 
-    if (c->end >= c->buffer && c->bits >= 0) {
+    if (c->end <= c->buffer && c->bits >= 0) {
         av_log(s->avctx, AV_LOG_ERROR, "End of AC stream reached in vp6_parse_coeff\n");
         return AVERROR_INVALIDDATA;
     }
diff --git a/tests/ref/fate/vp5 b/tests/ref/fate/vp5
index 2116fb9..da510fc 100644
--- a/tests/ref/fate/vp5
+++ b/tests/ref/fate/vp5
@@ -249,4 +249,4 @@
 0,        243,        243,        1,   233472, 0x6f530ac6
 0,        244,        244,        1,   233472, 0x94f7466c
 0,        245,        245,        1,   233472, 0xa8c1d365
-0,        246,        246,        1,   233472, 0xedcff050
+0,        246,        246,        1,   233472, 0x8843293b