linux-kernel - Re: [PATCH v2 06/23] media: h264: Increase reference lists size to 32

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Message-ID: <Ykg7n2QM/TjH7Vro@eze-laptop>
Date:   Sat, 2 Apr 2022 09:03:43 -0300
From:   Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
To:     Nicolas Dufresne <nicolas.dufresne@...labora.com>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        kernel@...labora.com,
        Sebastian Fricke <sebastian.fricke@...labora.com>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-rockchip@...ts.infradead.org, linux-staging@...ts.linux.dev
Subject: Re: [PATCH v2 06/23] media: h264: Increase reference lists size to 32

On Thu, Mar 31, 2022 at 03:37:08PM -0400, Nicolas Dufresne wrote:
> This is to accommodate support for field decoding, which splits the top
> and the bottom references into the reference list.
> 
> Signed-off-by: Nicolas Dufresne <nicolas.dufresne@...labora.com>
> Reviewed-by: Sebastian Fricke <sebastian.fricke@...labora.com>

Reviewed-by: Ezequiel Garcia <ezequiel@...guardiasur.com.ar>

> ---
>  drivers/media/v4l2-core/v4l2-h264.c        | 6 +++---
>  drivers/staging/media/hantro/hantro_hw.h   | 6 +++---
>  drivers/staging/media/rkvdec/rkvdec-h264.c | 6 +++---
>  include/media/v4l2-h264.h                  | 8 ++++----
>  4 files changed, 13 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/media/v4l2-core/v4l2-h264.c b/drivers/media/v4l2-core/v4l2-h264.c
> index afbfcf78efe4..4b46b36526c0 100644
> --- a/drivers/media/v4l2-core/v4l2-h264.c
> +++ b/drivers/media/v4l2-core/v4l2-h264.c
> @@ -212,7 +212,7 @@ static int v4l2_h264_b1_ref_list_cmp(const void *ptra, const void *ptrb,
>   * v4l2_h264_build_p_ref_list() - Build the P reference list
>   *
>   * @builder: reference list builder context
> - * @reflist: 16 sized array used to store the P reference list. Each entry
> + * @reflist: 32 sized array used to store the P reference list. Each entry
>   *	     is a v4l2_h264_reference structure
>   *
>   * This functions builds the P reference lists. This procedure is describe in
> @@ -235,9 +235,9 @@ EXPORT_SYMBOL_GPL(v4l2_h264_build_p_ref_list);
>   * v4l2_h264_build_b_ref_lists() - Build the B0/B1 reference lists
>   *
>   * @builder: reference list builder context
> - * @b0_reflist: 16 sized array used to store the B0 reference list. Each entry
> + * @b0_reflist: 32 sized array used to store the B0 reference list. Each entry
>   *		is a v4l2_h264_reference structure
> - * @b1_reflist: 16 sized array used to store the B1 reference list. Each entry
> + * @b1_reflist: 32 sized array used to store the B1 reference list. Each entry
>   *		is a v4l2_h264_reference structure
>   *
>   * This functions builds the B0/B1 reference lists. This procedure is described
> diff --git a/drivers/staging/media/hantro/hantro_hw.h b/drivers/staging/media/hantro/hantro_hw.h
> index 2bc6b8f088f5..292aaaabaf24 100644
> --- a/drivers/staging/media/hantro/hantro_hw.h
> +++ b/drivers/staging/media/hantro/hantro_hw.h
> @@ -69,9 +69,9 @@ struct hantro_h264_dec_ctrls {
>   * @b1:		B1 reflist
>   */
>  struct hantro_h264_dec_reflists {
> -	struct v4l2_h264_reference p[HANTRO_H264_DPB_SIZE];
> -	struct v4l2_h264_reference b0[HANTRO_H264_DPB_SIZE];
> -	struct v4l2_h264_reference b1[HANTRO_H264_DPB_SIZE];
> +	struct v4l2_h264_reference p[V4L2_H264_REF_LIST_LEN];
> +	struct v4l2_h264_reference b0[V4L2_H264_REF_LIST_LEN];
> +	struct v4l2_h264_reference b1[V4L2_H264_REF_LIST_LEN];
>  };
>  
>  /**
> diff --git a/drivers/staging/media/rkvdec/rkvdec-h264.c b/drivers/staging/media/rkvdec/rkvdec-h264.c
> index 3c7f3d87fab4..dff89732ddd0 100644
> --- a/drivers/staging/media/rkvdec/rkvdec-h264.c
> +++ b/drivers/staging/media/rkvdec/rkvdec-h264.c
> @@ -100,9 +100,9 @@ struct rkvdec_h264_priv_tbl {
>  #define RKVDEC_H264_DPB_SIZE 16
>  
>  struct rkvdec_h264_reflists {
> -	struct v4l2_h264_reference p[RKVDEC_H264_DPB_SIZE];
> -	struct v4l2_h264_reference b0[RKVDEC_H264_DPB_SIZE];
> -	struct v4l2_h264_reference b1[RKVDEC_H264_DPB_SIZE];
> +	struct v4l2_h264_reference p[V4L2_H264_REF_LIST_LEN];
> +	struct v4l2_h264_reference b0[V4L2_H264_REF_LIST_LEN];
> +	struct v4l2_h264_reference b1[V4L2_H264_REF_LIST_LEN];
>  	u8 num_valid;
>  };
>  
> diff --git a/include/media/v4l2-h264.h b/include/media/v4l2-h264.h
> index ef9a894e3c32..e282fb16ac58 100644
> --- a/include/media/v4l2-h264.h
> +++ b/include/media/v4l2-h264.h
> @@ -37,7 +37,7 @@ struct v4l2_h264_reflist_builder {
>  		u16 longterm : 1;
>  	} refs[V4L2_H264_NUM_DPB_ENTRIES];
>  	s32 cur_pic_order_count;
> -	struct v4l2_h264_reference unordered_reflist[V4L2_H264_NUM_DPB_ENTRIES];
> +	struct v4l2_h264_reference unordered_reflist[V4L2_H264_REF_LIST_LEN];
>  	u8 num_valid;
>  };
>  
> @@ -51,9 +51,9 @@ v4l2_h264_init_reflist_builder(struct v4l2_h264_reflist_builder *b,
>   * v4l2_h264_build_b_ref_lists() - Build the B0/B1 reference lists
>   *
>   * @builder: reference list builder context
> - * @b0_reflist: 16 sized array used to store the B0 reference list. Each entry
> + * @b0_reflist: 32 sized array used to store the B0 reference list. Each entry
>   *		is a v4l2_h264_reference structure
> - * @b1_reflist: 16 sized array used to store the B1 reference list. Each entry
> + * @b1_reflist: 32 sized array used to store the B1 reference list. Each entry
>   *		is a v4l2_h264_reference structure
>   *
>   * This functions builds the B0/B1 reference lists. This procedure is described
> @@ -70,7 +70,7 @@ v4l2_h264_build_b_ref_lists(const struct v4l2_h264_reflist_builder *builder,
>   * v4l2_h264_build_p_ref_list() - Build the P reference list
>   *
>   * @builder: reference list builder context
> - * @reflist: 16 sized array used to store the P reference list. Each entry
> + * @reflist: 32 sized array used to store the P reference list. Each entry
>   *	     is a v4l2_h264_reference structure
>   *
>   * This functions builds the P reference lists. This procedure is describe in
> -- 
> 2.34.1
>