Re: [PATCH] media: cedrus: Propagate OUTPUT resolution to CAPTURE

From: Ezequiel Garcia <ezequiel@collabora.com>
To: Nicolas Dufresne <nicolas.dufresne@collabora.com>,
	Hans Verkuil <hverkuil@xs4all.nl>
Cc: devel@driverdev.osuosl.org, kernel@collabora.com,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-kernel@vger.kernel.org, Maxime Ripard <mripard@kernel.org>,
	Paul Kocialkowski <paul.kocialkowski@bootlin.com>,
	Chen-Yu Tsai <wens@csie.org>,
	stable@vger.kernel.org,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	linux-media@vger.kernel.org
Subject: Re: [PATCH] media: cedrus: Propagate OUTPUT resolution to CAPTURE
Date: Wed, 15 Jul 2020 08:57:50 -0300	[thread overview]
Message-ID: <3c8a235ebb0bf76bcffeb8c6b983cd4c95d77459.camel@collabora.com> (raw)
In-Reply-To: <20200514153903.341287-1-nicolas.dufresne@collabora.com>

It seems this one felt thru the cracks. Sorry for the delay.

On Thu, 2020-05-14 at 11:39 -0400, Nicolas Dufresne wrote:
> As per spec, the CAPTURE resolution should be automatically set based on
> the OTUPUT resolution. This patch properly propagate width/height to the
> capture when the OUTPUT format is set and override the user provided
> width/height with configured OUTPUT resolution when the CAPTURE fmt is
> updated.
> 
> This also prevents userspace from selecting a CAPTURE resolution that is
> too small, avoiding unwanted page faults.
> 
> Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>

This looks correct.

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

Thanks,
Ezequiel

> ---
>  drivers/staging/media/sunxi/cedrus/cedrus_video.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_video.c b/drivers/staging/media/sunxi/cedrus/cedrus_video.c
> index 16d82309e7b6..a6d6b15adc2e 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus_video.c
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_video.c
> @@ -247,6 +247,8 @@ static int cedrus_try_fmt_vid_cap(struct file *file, void *priv,
>  		return -EINVAL;
>  
>  	pix_fmt->pixelformat = fmt->pixelformat;
> +	pix_fmt->width = ctx->src_fmt.width;
> +	pix_fmt->height = ctx->src_fmt.height;
>  	cedrus_prepare_format(pix_fmt);
>  
>  	return 0;
> @@ -319,11 +321,14 @@ static int cedrus_s_fmt_vid_out(struct file *file, void *priv,
>  		break;
>  	}
>  
> -	/* Propagate colorspace information to capture. */
> +	/* Propagate format information to capture. */
>  	ctx->dst_fmt.colorspace = f->fmt.pix.colorspace;
>  	ctx->dst_fmt.xfer_func = f->fmt.pix.xfer_func;
>  	ctx->dst_fmt.ycbcr_enc = f->fmt.pix.ycbcr_enc;
>  	ctx->dst_fmt.quantization = f->fmt.pix.quantization;
> +	ctx->dst_fmt.width = ctx->src_fmt.width;
> +	ctx->dst_fmt.height = ctx->src_fmt.height;
> +	cedrus_prepare_format(&ctx->dst_fmt);
>  
>  	return 0;
>  }
> -- 
> 2.26.2
> 
> 

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