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| author | James Almer <jamrial@gmail.com> | 2019-09-03 23:53:46 -0300 |
|---|---|---|
| committer | James Almer <jamrial@gmail.com> | 2019-09-04 10:07:12 -0300 |
| commit | 343f8d514e521ea52fc64aab0ddf1d497b0e4cec (patch) | |
| tree | 4364b83a45649ef673e21ed1bd2ead6bcabeae5c | |
| parent | 5102999223f2614cf06a8fc801a3f0dd8b0c4ea3 (diff) | |
| download | ffmpeg-343f8d514e521ea52fc64aab0ddf1d497b0e4cec.tar.gz | |
avcodec/wcmv: prevent frame copying when outputting duplicate frames
Signed-off-by: James Almer <jamrial@gmail.com>
| -rw-r--r-- | libavcodec/wcmv.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/libavcodec/wcmv.c b/libavcodec/wcmv.c index 2f21c1430c..d7a3cbd1b7 100644 --- a/libavcodec/wcmv.c +++ b/libavcodec/wcmv.c @@ -45,7 +45,7 @@ static int decode_frame(AVCodecContext *avctx, { WCMVContext *s = avctx->priv_data; AVFrame *frame = data; - int skip, blocks, zret, ret, intra = 0, bpp = s->bpp; + int skip, blocks, zret, ret, intra = 0, flags = 0, bpp = s->bpp; GetByteContext gb; uint8_t *dst; @@ -56,11 +56,13 @@ static int decode_frame(AVCodecContext *avctx, } bytestream2_init(&gb, avpkt->data, avpkt->size); + blocks = bytestream2_get_le16(&gb); + if (!blocks) + flags |= FF_REGET_BUFFER_FLAG_READONLY; - if ((ret = ff_reget_buffer(avctx, s->prev_frame, 0)) < 0) + if ((ret = ff_reget_buffer(avctx, s->prev_frame, flags)) < 0) return ret; - blocks = bytestream2_get_le16(&gb); if (blocks > 5) { GetByteContext bgb; int x = 0, size; |