linux-kernel - Re: [PATCH 7/7] media: hantro: Allows luma and chroma depth to be different

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Message-ID: <Yr3gI8L/o9DIYPWK@eze-laptop>
Date:   Thu, 30 Jun 2022 14:40:51 -0300
From:   Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
To:     Benjamin Gaignard <benjamin.gaignard@...labora.com>
Cc:     mchehab@...nel.org, hverkuil@...all.nl, p.zabel@...gutronix.de,
        gregkh@...uxfoundation.org, mripard@...nel.org,
        paul.kocialkowski@...tlin.com, wens@...e.org,
        jernej.skrabec@...il.com, samuel@...lland.org,
        nicolas.dufresne@...labora.com, andrzej.p@...labora.com,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-rockchip@...ts.infradead.org, linux-staging@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        kernel@...labora.com
Subject: Re: [PATCH 7/7] media: hantro: Allows luma and chroma depth to be
 different

On Fri, Jun 17, 2022 at 01:58:02PM +0200, Benjamin Gaignard wrote:
> Luma and chroma depth are set on different hardware registers.
> Even if they aren't identical the bitstream can be compliant
> to HEVC specifications and decoded by the hardware.
> 
> With this patch TSUNEQBD_A_MAIN10_Technicolor_2 conformance test
> is successfully decoded.
> 
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>

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

Thanks,
Ezequiel

> ---
>  drivers/staging/media/hantro/hantro_hevc.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/drivers/staging/media/hantro/hantro_hevc.c b/drivers/staging/media/hantro/hantro_hevc.c
> index 85688a4df166..26b1329893f7 100644
> --- a/drivers/staging/media/hantro/hantro_hevc.c
> +++ b/drivers/staging/media/hantro/hantro_hevc.c
> @@ -156,9 +156,6 @@ static int tile_buffer_reallocate(struct hantro_ctx *ctx)
>  
>  int hantro_hevc_validate_sps(struct hantro_ctx *ctx, const struct v4l2_ctrl_hevc_sps *sps)
>  {
> -	if (sps->bit_depth_luma_minus8 != sps->bit_depth_chroma_minus8)
> -		/* Luma and chroma bit depth mismatch */
> -		return -EINVAL;
>  	if (sps->bit_depth_luma_minus8 != 0 && sps->bit_depth_luma_minus8 != 2)
>  		/* Only 8-bit and 10-bit is supported */
>  		return -EINVAL;
> -- 
> 2.32.0
>