[FFmpeg-cvslog] avcodec/h264: Fail for invalid mixed IDR / non IDR frames in slice threading mode

[Michael Niedermayer]

ffmpeg | branch: release/2.4 | Michael Niedermayer <michaelni at gmx.at> | Sat Apr  4 19:28:33 2015 +0200| [7572cf7fdcc998b8fd1fdadc1ba3ff90349b6978] | committer: Michael Niedermayer

avcodec/h264: Fail for invalid mixed IDR / non IDR frames in slice threading mode

Fixes Ticket4408

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit fc58d5c43b4c7396fc69081eb0dfe5b6a21cb10d)

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=7572cf7fdcc998b8fd1fdadc1ba3ff90349b6978
---

 libavcodec/h264.c |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index 4757015..5f29267 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -1551,8 +1551,14 @@ again:
                     ret = -1;
                     goto end;
                 }
-                if(!idr_cleared)
+                if(!idr_cleared) {
+                    if (h->current_slice && (avctx->active_thread_type & FF_THREAD_SLICE)) {
+                        av_log(h, AV_LOG_ERROR, "invalid mixed IDR / non IDR frames cannot be decoded in slice multithreading mode\n");
+                        ret = AVERROR_INVALIDDATA;
+                        goto end;
+                    }
                     idr(h); // FIXME ensure we don't lose some frames if there is reordering
+                }
                 idr_cleared = 1;
                 h->has_recovery_point = 1;
             case NAL_SLICE: