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[FFmpeg-devel,5/7] avcodec/snowenc: Clear MMX state after edge drawing and picture encode

Message ID 20161021133146.11956-5-michael@niedermayer.cc
State Accepted
Commit 2c1d38d1e1c2617f51bbb833bb7fe1298644cd21
Headers show

Commit Message

Michael Niedermayer Oct. 21, 2016, 1:31 p.m. UTC 
Fixes undefined behavior from calling libc allocation with unclean FPU state.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/snowenc.c | 2 ++
 1 file changed, 2 insertions(+)

Comments

Michael Niedermayer Oct. 22, 2016, 12:19 p.m. UTC | #1 
On Fri, Oct 21, 2016 at 03:31:44PM +0200, Michael Niedermayer wrote:
> Fixes undefined behavior from calling libc allocation with unclean FPU state.
> 
> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> ---
>  libavcodec/snowenc.c | 2 ++
>  1 file changed, 2 insertions(+)

applied

[...]
diff mbox

Patch

diff --git a/libavcodec/snowenc.c b/libavcodec/snowenc.c
index 00aef57..5cc7997 100644
--- a/libavcodec/snowenc.c
+++ b/libavcodec/snowenc.c
@@ -1640,6 +1640,7 @@  static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                                     s->current_picture->linesize[2], w>>s->chroma_h_shift, h>>s->chroma_v_shift,
                                     EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);
         }
+        emms_c();
     }
 
     ff_snow_frame_start(s);
@@ -1856,6 +1857,7 @@  FF_ENABLE_DEPRECATION_WARNINGS
         }
 
     }
+    emms_c();
 
     update_last_header_values(s);