[FFmpeg-cvslog] avcodec/ffv1dec: Print an error if the quant table count is invalid

[Michael Niedermayer]

ffmpeg | branch: release/2.4 | Michael Niedermayer <michael at niedermayer.cc> | Thu Nov  5 01:25:50 2015 +0100| [6c83283c3a009a0cd2bf52328f2bb65d286e72ed] | committer: Michael Niedermayer

avcodec/ffv1dec: Print an error if the quant table count is invalid

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit a8b254e436dce2f5c8c6459108dab4b02cc6b79b)

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6c83283c3a009a0cd2bf52328f2bb65d286e72ed
---

 libavcodec/ffv1dec.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c
index 72afa25..70d1185 100644
--- a/libavcodec/ffv1dec.c
+++ b/libavcodec/ffv1dec.c
@@ -567,8 +567,10 @@ static int read_extra_header(FFV1Context *f)
     }
 
     f->quant_table_count = get_symbol(c, state, 0);
-    if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count)
+    if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count) {
+        av_log(f->avctx, AV_LOG_ERROR, "quant table count %d is invalid\n", f->quant_table_count);
         return AVERROR_INVALIDDATA;
+    }
 
     for (i = 0; i < f->quant_table_count; i++) {
         f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);