[FFmpeg-devel] [PATCH 3/4] lavc/vvc_parser: Fixed the has_b_frames setting

[Nuo Mi]

On Fri, Apr 19, 2024 at 9:55 PM Jun Zhao <mypopy at gmail.com> wrote:

> From: Jun Zhao <mypopydev at gmail.com>
>
> has_b_frames used in decoder for size of the frame reordering
> buffer, setting this field from dpb_max_num_reorder_pics.
>
> Signed-off-by: Jun Zhao <barryjzhao at tencent.com>
> ---
>  libavcodec/vvc_parser.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/libavcodec/vvc_parser.c b/libavcodec/vvc_parser.c
> index a0e10e1a7c..5373875aae 100644
> --- a/libavcodec/vvc_parser.c
> +++ b/libavcodec/vvc_parser.c
> @@ -185,8 +185,8 @@ static void set_parser_ctx(AVCodecParserContext *s,
> AVCodecContext *avctx,
>      avctx->color_range =
>          sps->vui.vui_full_range_flag ? AVCOL_RANGE_JPEG :
> AVCOL_RANGE_MPEG;
>
> -    avctx->has_b_frames = (sps->sps_max_sublayers_minus1 + 1) > 2 ? 2 :
> -                           sps->sps_max_sublayers_minus1;
> +    avctx->has_b_frames =
> +
> sps->sps_dpb_params.dpb_max_num_reorder_pics[sps->sps_max_sublayers_minus1];
>
Should we relocate this to the decoder? Other codecs typically set this
parameter in the decoder.

thank you

>
>      if (sps->sps_ptl_dpb_hrd_params_present_flag &&
>          sps->sps_timing_hrd_params_present_flag) {
> --
> 2.25.1
>
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