From 2c1d38d1e1c2617f51bbb833bb7fe1298644cd21 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Fri, 21 Oct 2016 15:10:48 +0200
Subject: [PATCH] avcodec/snowenc: Clear MMX state after edge drawing and
picture encode
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(+)
diff --git a/libavcodec/snowenc.c b/libavcodec/snowenc.c
index 00aef572ae1..5cc7997f5c9 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);
--
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