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mpeg12dec: simplify context duplication

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CC: libav-stable@libav.org
Bug-Id: CID 717453 / CID 717454 / CID 717915
This commit is contained in:
Vittorio Giovara 2014-11-04 09:36:59 -05:00
parent 37b3361e75
commit 5d29efe4b0
1 changed files with 5 additions and 2 deletions
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7
libavcodec/mpeg12dec.c
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@ -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++;