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

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

[Nicolas Dufresne]

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>
---
 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

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

[Nicolas Dufresne]

Le jeudi 14 mai 2020 à 11:39 -0400, Nicolas Dufresne a écrit :
> 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.

Side note, this patch is based on top of "Samuel Holland <samuel@sholland.org>"
patches:

	[PATCH v3 1/2] media: cedrus: Program output format during each run
	[PATCH v3 2/2] media: cedrus: Implement runtime PM

As the patchset also fixes concurrent decoding issues. This was tested using
GStreamer implementation, which strictly follow the Stateless CODEC spec and
expect OUTPUT to CAPTURE width/height propagation.

> 
> Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
> ---
>  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;
>  }

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

[Ezequiel Garcia]

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
> 
> 

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

[Paul Kocialkowski]

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Hi,

On Wed 15 Jul 20, 08:57, Ezequiel Garcia wrote:
> 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.

Looks like there's no issue with alignment (that will get applied as well),
which was a possible concern.

Thanks for reviewing!

Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>

Cheers,

Paul

> 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
> > 
> > 
> 
> 

-- 
Paul Kocialkowski, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com

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