From 6cf7e81f8cce20f1b39ab5a1485682b698db7e60 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Reimar=20D=C3=B6ffinger?= <Reimar.Doeffinger@gmx.de>
Date: Sun, 9 Sep 2007 09:00:12 +0000
Subject: [PATCH] Fix extreme stupidity: buffer size check must of course be
 before buffer use!

Originally committed as revision 10443 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/nuv.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavcodec/nuv.c b/libavcodec/nuv.c
index d07c868aa5..232cea3fc9 100644
--- a/libavcodec/nuv.c
+++ b/libavcodec/nuv.c
@@ -156,12 +156,12 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
         buf_size = c->decomp_size;
     }
     if (c->codec_frameheader) {
-        get_quant_quality(c, buf[10]);
-        rtjpeg_decode_init(&c->rtj, &c->dsp, c->width, c->height, c->lq, c->cq);
         if (buf_size < 12) {
             av_log(avctx, AV_LOG_ERROR, "invalid nuv video frame\n");
             return -1;
         }
+        get_quant_quality(c, buf[10]);
+        rtjpeg_decode_init(&c->rtj, &c->dsp, c->width, c->height, c->lq, c->cq);
         buf = &buf[12];
         buf_size -= 12;
     }