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huffyuv: assign correct per-thread avctx pointer to HYuvContext::avctx.

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Fixes the following tsan warning when running fate-vsynth_lena-ffvhuff:

WARNING: ThreadSanitizer: data race (pid=6484)
  Write of size 8 at 0x7d64000154b8 by main thread (mutexes: write M1331):
    #0 update_context_from_user src/libavcodec/pthread_frame.c:331 (ffmpeg+0x000000dca887)
[..]
  Previous read of size 8 at 0x7d64000154b8 by thread T2 (mutexes: write M1334):
    #0 draw_slice src/libavcodec/huffyuvdec.c:857 (ffmpeg+0x000000bcc86f)
This commit is contained in:
Ronald S. Bultje 2017-04-03 22:28:22 -04:00
parent f3d8e0d369
commit 7c7e7c44a6
1 changed files with 2 additions and 0 deletions
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libavcodec/huffyuvdec.c
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@ -579,6 +579,8 @@ static av_cold int decode_init_thread_copy(AVCodecContext *avctx)
HYuvContext *s = avctx->priv_data; HYuvContext *s = avctx->priv_data;
int i, ret; int i, ret;
s->avctx = avctx;
if ((ret = ff_huffyuv_alloc_temp(s)) < 0) { if ((ret = ff_huffyuv_alloc_temp(s)) < 0) {
ff_huffyuv_common_end(s); ff_huffyuv_common_end(s);
return ret; return ret;