On 5/22/2020 1:56 PM, Anton Khirnov wrote:
> ---
> libavcodec/decode.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/libavcodec/decode.c b/libavcodec/decode.c
> index f3327d74af..dbecdf3f46 100644
> --- a/libavcodec/decode.c
> +++ b/libavcodec/decode.c
> @@ -586,6 +586,7 @@ static int decode_receive_frame_internal(AVCodecContext
> *avctx, AVFrame *frame)
> int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const
> AVPacket *avpkt)
> {
> AVCodecInternal *avci = avctx->internal;
> + AVPacket buffer_pkt = { NULL };
> int ret;
>
> if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
> @@ -597,16 +598,15 @@ int attribute_align_arg
> avcodec_send_packet(AVCodecContext *avctx, const AVPacke
> if (avpkt && !avpkt->size && avpkt->data)
> return AVERROR(EINVAL);
>
> - av_packet_unref(avci->buffer_pkt);
> if (avpkt && (avpkt->data || avpkt->side_data_elems)) {
> - ret = av_packet_ref(avci->buffer_pkt, avpkt);
> + ret = av_packet_ref(&buffer_pkt, avpkt);
> if (ret < 0)
> return ret;
> }
>
> - ret = av_bsf_send_packet(avci->bsf, avci->buffer_pkt);
> + ret = av_bsf_send_packet(avci->bsf, &buffer_pkt);
> if (ret < 0) {
> - av_packet_unref(avci->buffer_pkt);
> + av_packet_unref(&buffer_pkt);
> return ret;
> }
What's the gain here? You're not removing the context variable since
it's used in the encode framework as well, and you're introducing a
stack AVPacket (that, while harmless, is not even properly initialized).
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