Re: [FFmpeg-devel] [PATCH 2/6] avcodec/nvdec: avoid needless copy of output frame

[Wang Bin]

>
>
>
> -        offset += cpy.Height;
> +    frame->buf[1] = av_buffer_create((uint8_t *)unmap_data,
> sizeof(*unmap_data),
> +                                     nvdec_unmap_mapped_frame,
> (void*)devptr,
> +                                     AV_BUFFER_FLAG_READONLY);
> +    if (!frame->buf[1]) {
> +        ret = AVERROR(ENOMEM);
> +        goto copy_fail;
>      }
>
>
If AVFrame.buf[i] is non-NULL, then buf[j] must be non-NULL for all j < i,
see libavutil/frame.h. So either change the comment in frame.h or change
your implementation is required
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