[FFmpeg-cvslog] Do not decode RV30 files if the extradata is too small

[compn]

On Sat, 16 Jul 2011 19:49:09 +0200 (CEST), Rafaël Carré wrote:
>ffmpeg | branch: master | Rafaël Carré <rafael.carre at gmail.com> | Sat Jul 16 11:41:08 2011 -0400| [289c60001fb0a9a1d7a97c876d8a42b84c6874ac] | committer: Diego Biurrun
>
>Do not decode RV30 files if the extradata is too small
>
>Signed-off-by: Diego Biurrun <diego at biurrun.de>
>
>> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=289c60001fb0a9a1d7a97c876d8a42b84c6874ac
>---
>
> libavcodec/rv30.c |    1 +
> 1 files changed, 1 insertions(+), 0 deletions(-)
>
>diff --git a/libavcodec/rv30.c b/libavcodec/rv30.c
>index 5d7109f..e047c82 100644
>--- a/libavcodec/rv30.c
>+++ b/libavcodec/rv30.c
>@@ -256,6 +256,7 @@ static av_cold int rv30_decode_init(AVCodecContext *avctx)
>     if(avctx->extradata_size - 8 < (r->rpr - 1) * 2){
>         av_log(avctx, AV_LOG_ERROR, "Insufficient extradata - need at least %d bytes, got %d\n",
>                6 + r->rpr * 2, avctx->extradata_size);
>+        return EINVAL;
>     }
>     r->parse_slice_header = rv30_parse_slice_header;
>     r->decode_intra_types = rv30_decode_intra_types;


dont we like to try playing it anyways ?
what exactly does this fix?
the thread on libav-devel was just patch only.

-compn