[FFmpeg-cvslog] avcodec/iff: check pixfmt for rgb8 / rgbn

[Michael Niedermayer]

ffmpeg | branch: release/2.3 | Michael Niedermayer <michaelni at gmx.at> | Sun Aug 10 21:59:33 2014 +0200| [83956309cc16b47fbf8548e8c5bcf67b8cd4b65f] | committer: Michael Niedermayer

avcodec/iff: check pixfmt for rgb8 / rgbn

Fixes out of array access

Found-by: Piotr Bandurski <ami_stuff at o2.pl>
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit 3539d6c63a16e1b2874bb037a86f317449c58770)

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=83956309cc16b47fbf8548e8c5bcf67b8cd4b65f
---

 libavcodec/iff.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavcodec/iff.c b/libavcodec/iff.c
index f08a0f7..d93015c 100644
--- a/libavcodec/iff.c
+++ b/libavcodec/iff.c
@@ -847,9 +847,9 @@ static int decode_frame(AVCodecContext *avctx,
         break;
     case 4:
         bytestream2_init(&gb, buf, buf_size);
-        if (avctx->codec_tag == MKTAG('R', 'G', 'B', '8'))
+        if (avctx->codec_tag == MKTAG('R', 'G', 'B', '8') && avctx->pix_fmt == AV_PIX_FMT_RGB32)
             decode_rgb8(&gb, s->frame->data[0], avctx->width, avctx->height, s->frame->linesize[0]);
-        else if (avctx->codec_tag == MKTAG('R', 'G', 'B', 'N'))
+        else if (avctx->codec_tag == MKTAG('R', 'G', 'B', 'N') && avctx->pix_fmt == AV_PIX_FMT_RGB444)
             decode_rgbn(&gb, s->frame->data[0], avctx->width, avctx->height, s->frame->linesize[0]);
         else
             return unsupported(avctx);