From 96037382210b5c1b0202647ac0ca196ce5de4487 Mon Sep 17 00:00:00 2001
From: Kostya Shishkov <kostya.shishkov@gmail.com>
Date: Sat, 19 May 2012 13:45:00 +0200
Subject: [PATCH] indeo: check that band output buffer exists

---
 libavcodec/ivi_common.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavcodec/ivi_common.c b/libavcodec/ivi_common.c
index 0d773761ff..6979231b7d 100644
--- a/libavcodec/ivi_common.c
+++ b/libavcodec/ivi_common.c
@@ -641,6 +641,10 @@ static int decode_band(IVI45DecContext *ctx, int plane_num,
     IVITile     *tile;
 
     band->buf     = band->bufs[ctx->dst_buf];
+    if (!band->buf) {
+        av_log(avctx, AV_LOG_ERROR, "Band buffer points to no data!\n");
+        return AVERROR_INVALIDDATA;
+    }
     band->ref_buf = band->bufs[ctx->ref_buf];
     band->data_ptr = ctx->frame_data + (get_bits_count(&ctx->gb) >> 3);