[FFmpeg-devel] [PATCH 07/39] avcodec/vp8: Constify slice threads' ptr to main context

Andreas Rheinhardt andreas.rheinhardt at outlook.com
Wed Jul 27 01:07:42 EEST 2022


Modifying the main context from a slice thread is (usually)
a data race, so it must not happen. So only use a pointer to const
to access the main context.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>
---
 libavcodec/vp8.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/vp8.c b/libavcodec/vp8.c
index e474fc5de5..d0c26ba00d 100644
--- a/libavcodec/vp8.c
+++ b/libavcodec/vp8.c
@@ -2582,7 +2582,7 @@ static av_always_inline
 int vp78_decode_mb_row_sliced(AVCodecContext *avctx, void *tdata, int jobnr,
                               int threadnr, int is_vp7)
 {
-    VP8Context *s = avctx->priv_data;
+    const VP8Context *s = avctx->priv_data;
     VP8ThreadData *td = &s->thread_data[jobnr];
     VP8ThreadData *next_td = NULL, *prev_td = NULL;
     VP8Frame *curframe = s->curframe;
-- 
2.34.1



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