linux-kernel - Re: [RESEND PATCH v2 4/4] media: chips-media: wave5: Support YUV422 raw pixel-formats on the encoder.

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Date: Mon, 22 Apr 2024 11:49:09 -0400
From: Nicolas Dufresne <nicolas@...fresne.ca>
To: "jackson.lee" <jackson.lee@...psnmedia.com>, "mchehab@...nel.org"
	 <mchehab@...nel.org>, "sebastian.fricke@...labora.com"
	 <sebastian.fricke@...labora.com>
Cc: "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>, 
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 "hverkuil@...all.nl" <hverkuil@...all.nl>,  Nas Chung
 <nas.chung@...psnmedia.com>, "lafley.kim" <lafley.kim@...psnmedia.com>,
 "b-brnich@...com" <b-brnich@...com>
Subject: Re: [RESEND PATCH v2 4/4] media: chips-media: wave5: Support YUV422
 raw pixel-formats on the encoder.

Hi Jackson,

Le lundi 22 avril 2024 à 04:30 +0000, jackson.lee a écrit :
> Hi Nicolas
> 
> 
> > -----Original Message-----
> > From: Nicolas Dufresne <nicolas@...fresne.ca>
> > Sent: Friday, April 19, 2024 6:06 AM
> > To: jackson.lee <jackson.lee@...psnmedia.com>; mchehab@...nel.org;
> > sebastian.fricke@...labora.com
> > Cc: linux-media@...r.kernel.org; linux-kernel@...r.kernel.org;
> > hverkuil@...all.nl; Nas Chung <nas.chung@...psnmedia.com>; lafley.kim
> > <lafley.kim@...psnmedia.com>; b-brnich@...com
> > Subject: Re: [RESEND PATCH v2 4/4] media: chips-media: wave5: Support YUV422
> > raw pixel-formats on the encoder.
> > 
> > Le lundi 11 mars 2024 à 19:56 +0900, jackson.lee a écrit :
> > > From: "Jackson.lee" <jackson.lee@...psnmedia.com>
> > > 
> > > Add support for the YUV422P, NV16, NV61, YUV422M, NV16M, NV61M raw pixel-
> > formats to the Wave5 encoder.
> > > All these formats have a chroma subsampling ratio of 4:2:2 and therefore
> > require a new image size calculation as the driver previously only handled a
> > ratio of 4:2:0.
> > > 
> > > Signed-off-by: Jackson.lee <jackson.lee@...psnmedia.com>
> > > Signed-off-by: Nas Chung <nas.chung@...psnmedia.com>
> > > ---
> > >  .../chips-media/wave5/wave5-vpu-enc.c         | 59 +++++++++++++++++--
> > >  1 file changed, 54 insertions(+), 5 deletions(-)
> > > 
> > > diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
> > > b/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
> > > index 5a32bb138158..77657f63a169 100644
> > > --- a/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
> > > +++ b/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
> > > @@ -39,6 +39,24 @@ static const struct vpu_format
> > enc_fmt_list[FMT_TYPES][MAX_FMTS] = {
> > >  		{
> > >  			.v4l2_pix_fmt = V4L2_PIX_FMT_NV21M,
> > >  		},
> > > +		{
> > > +			.v4l2_pix_fmt = V4L2_PIX_FMT_YUV422P,
> > > +		},
> > > +		{
> > > +			.v4l2_pix_fmt = V4L2_PIX_FMT_NV16,
> > > +		},
> > > +		{
> > > +			.v4l2_pix_fmt = V4L2_PIX_FMT_NV61,
> > > +		},
> > > +		{
> > > +			.v4l2_pix_fmt = V4L2_PIX_FMT_YUV422M,
> > > +		},
> > > +		{
> > > +			.v4l2_pix_fmt = V4L2_PIX_FMT_NV16M,
> > > +		},
> > > +		{
> > > +			.v4l2_pix_fmt = V4L2_PIX_FMT_NV61M,
> > > +		},
> > >  	}
> > >  };
> > > 
> > > @@ -101,13 +119,30 @@ static int start_encode(struct vpu_instance *inst,
> > u32 *fail_res)
> > >  	struct vb2_v4l2_buffer *dst_buf;
> > >  	struct frame_buffer frame_buf;
> > >  	struct enc_param pic_param;
> > > -	u32 stride = ALIGN(inst->dst_fmt.width, 32);
> > > -	u32 luma_size = (stride * inst->dst_fmt.height);
> > > -	u32 chroma_size = ((stride / 2) * (inst->dst_fmt.height / 2));
> > > +	u32 stride = inst->src_fmt.plane_fmt[0].bytesperline;
> > > +	u32 luma_size = (stride * inst->src_fmt.height);
> > > +	u32 chroma_size = 0;
> > 
> > The helper introduced in previous patch also calculate sizeimage for each
> > planes, so no need for this code anymore.
> 
> Your comment means the below code? 
> 
> 	u32 luma_size = inst->src_fmt.plane_fmt[0].sizeimage
> 	u32 chroma_size = inst->src_fmt.plane_fmt[1].sizeimage
> 
> 	
> > 
> > > 
> > >  	memset(&pic_param, 0, sizeof(struct enc_param));
> > >  	memset(&frame_buf, 0, sizeof(struct frame_buffer));
> > > 
> 
> The below code could be removed.
> 
> > > +	if (inst->src_fmt.pixelformat == V4L2_PIX_FMT_YUV420 ||
> > > +	    inst->src_fmt.pixelformat == V4L2_PIX_FMT_YUV420M)
> > > +		chroma_size = luma_size / 4;
> > > +	else if (inst->src_fmt.pixelformat == V4L2_PIX_FMT_NV12 ||
> > > +		 inst->src_fmt.pixelformat == V4L2_PIX_FMT_NV21 ||
> > > +		 inst->src_fmt.pixelformat == V4L2_PIX_FMT_NV12M ||
> > > +		 inst->src_fmt.pixelformat == V4L2_PIX_FMT_NV21M)
> > > +		chroma_size = luma_size / 2;
> > > +	else if (inst->src_fmt.pixelformat == V4L2_PIX_FMT_YUV422P ||
> > > +		 inst->src_fmt.pixelformat == V4L2_PIX_FMT_YUV422M)
> > > +		chroma_size = luma_size / 2;
> > > +	else if (inst->src_fmt.pixelformat == V4L2_PIX_FMT_NV16 ||
> > > +		 inst->src_fmt.pixelformat == V4L2_PIX_FMT_NV61 ||
> > > +		 inst->src_fmt.pixelformat == V4L2_PIX_FMT_NV16M ||
> > > +		 inst->src_fmt.pixelformat == V4L2_PIX_FMT_NV61M)
> > > +		chroma_size = luma_size;
> > > +
> 
> Is That right?

Yes, using the src_fmt seems accurate for the encoder.

cheers,
Nicolas