From 8ca03528f532ab1672e9e908c0f34ab5ef17f6cf Mon Sep 17 00:00:00 2001
From: Oana Stratulat <[email protected]>
Date: Thu, 5 Jan 2012 01:08:05 +0200
Subject: [PATCH] Patch for hang in amrnb decoder. Fixes bug 151

---
 libavcodec/amrnbdec.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/libavcodec/amrnbdec.c b/libavcodec/amrnbdec.c
index 926014f..400630b 100644
--- a/libavcodec/amrnbdec.c
+++ b/libavcodec/amrnbdec.c
@@ -977,6 +977,10 @@ static int amrnb_decode_frame(AVCodecContext *avctx, void *data,

         pitch_sharpening(p, subframe, p->cur_frame_mode, &fixed_sparse);

+        if (fixed_sparse.pitch_lag == 0) {
+            av_log(avctx, AV_LOG_ERROR, "the file is corrupted, fixed_sparse.pitch_lag = 0\n");
+            return AVERROR_INVALIDDATA;
+        }
         ff_set_fixed_vector(p->fixed_vector, &fixed_sparse, 1.0,
                             AMR_SUBFRAME_SIZE);

--
1.7.5.4