From b55aa7df6b79746541f05d65c414961f49f46f68 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Wed, 16 Nov 2011 15:10:26 +0100
Subject: [PATCH] cinepak: Fix division by zero, ask for sample if
encoded_buf_size is 0
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Martin Storsjö <martin@martin.st>
---
libavcodec/cinepak.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libavcodec/cinepak.c b/libavcodec/cinepak.c
index f8b5352e35d..0dbdeab3545 100644
--- a/libavcodec/cinepak.c
+++ b/libavcodec/cinepak.c
@@ -330,6 +330,10 @@ static int cinepak_decode (CinepakContext *s)
/* if this is the first frame, check for deviant Sega FILM data */
if (s->sega_film_skip_bytes == -1) {
+ if (!encoded_buf_size) {
+ av_log_ask_for_sample(s->avctx, "encoded_buf_size is 0");
+ return -1;
+ }
if (encoded_buf_size != s->size && (s->size % encoded_buf_size) != 0) {
/* If the encoded frame size differs from the frame size as indicated
* by the container file, this data likely comes from a Sega FILM/CPK file.
--
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