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authorVittorio Giovara <vittorio.giovara@gmail.com>2014-11-04 09:36:59 -0500
committerVittorio Giovara <vittorio.giovara@gmail.com>2014-11-06 10:44:46 -0500
commit5d29efe4b0154ce305d66fed2ac23e5842439256 (patch)
tree6416d857eab391885bda81b6372910bebfba2bfb /libavcodec/mpeg12dec.c
parent37b3361e755361d4ff14a2973df001c0140d98d6 (diff)
mpeg12dec: simplify context duplication
CC: libav-stable@libav.org Bug-Id: CID 717453 / CID 717454 / CID 717915
Diffstat (limited to 'libavcodec/mpeg12dec.c')
-rw-r--r--libavcodec/mpeg12dec.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/libavcodec/mpeg12dec.c b/libavcodec/mpeg12dec.c
index 38daeaa954..b66bdc1dd6 100644
--- a/libavcodec/mpeg12dec.c
+++ b/libavcodec/mpeg12dec.c
@@ -1138,8 +1138,11 @@ static int mpeg_decode_update_thread_context(AVCodecContext *avctx,
if (err)
return err;
- if (!ctx->mpeg_enc_ctx_allocated)
- memcpy(s + 1, s1 + 1, sizeof(Mpeg1Context) - sizeof(MpegEncContext));
+ if (!ctx->mpeg_enc_ctx_allocated) {
+ // copy the whole context after the initial MpegEncContext structure
+ memcpy(ctx, ctx_from, sizeof(*ctx));
+ memset(&ctx->mpeg_enc_ctx, 0, sizeof(ctx->mpeg_enc_ctx));
+ }
if (!(s->pict_type == AV_PICTURE_TYPE_B || s->low_delay))
s->picture_number++;