linux-kernel - RE: [RESEND PATCH v0 2/5] wave5: Support to prepend sps/pps to IDR frame.

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Message-ID:
 <SE1P216MB1303D6BCD2EBB51B169D79D7ED4C2@SE1P216MB1303.KORP216.PROD.OUTLOOK.COM>
Date: Fri, 16 Feb 2024 07:12:42 +0000
From: jackson.lee <jackson.lee@...psnmedia.com>
To: Sebastian Fricke <sebastian.fricke@...labora.com>, Nicolas Dufresne
	<nicolas@...fresne.ca>
CC: "mchehab@...nel.org" <mchehab@...nel.org>, "linux-media@...r.kernel.org"
	<linux-media@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, Nas Chung <nas.chung@...psnmedia.com>,
	lafley.kim <lafley.kim@...psnmedia.com>, "b-brnich@...com" <b-brnich@...com>
Subject: RE: [RESEND PATCH v0 2/5] wave5: Support to prepend sps/pps to IDR
 frame.

Hello Sebastian

Thanks your review, we will review your advice.

> -----Original Message-----
> From: Sebastian Fricke <sebastian.fricke@...labora.com>
> Sent: Thursday, February 8, 2024 7:02 PM
> To: Nicolas Dufresne <nicolas@...fresne.ca>
> Cc: jackson.lee <jackson.lee@...psnmedia.com>; mchehab@...nel.org; linux-
> media@...r.kernel.org; linux-kernel@...r.kernel.org; Nas Chung
> <nas.chung@...psnmedia.com>; lafley.kim <lafley.kim@...psnmedia.com>; b-
> brnich@...com
> Subject: Re: [RESEND PATCH v0 2/5] wave5: Support to prepend sps/pps to
> IDR frame.
> 
> Hey Jackson,
> 
> as with the previous review, the title needs to be adjusted 'wave5:' is
> not enough.
> Also 'Support to prepend sps/pps to IDR' sounds a bit weird and doesn't
> quite match what you describe below.
> How about:
> 'Support SPS/PPS generation for each IDR'
> 
> On 07.02.2024 13:00, Nicolas Dufresne wrote:
> >Hi Jackson,
> >
> >Le mercredi 31 janvier 2024 à 10:30 +0900, jackson.lee a écrit :
> >> Indicates whether to generate SPS and PPS at every IDR. Setting it to 0
> disables generating SPS and PPS at every IDR.
> >> Setting it to one enables generating SPS and PPS at every IDR.
> 
> My suggestion:
> 
> Provide a control to toggle (0 = off / 1 = on), whether the SPS and PPS
> are generated for every IDR.
> 
> Greetings,
> Sebastian
> 
> >>
> >> Signed-off-by: Jackson Lee <jackson.lee@...psnmedia.com>
> >> Signed-off-by: Nas Chung <nas.chung@...psnmedia.com>
> >> ---
> >>  drivers/media/platform/chips-media/wave5/wave5-hw.c      | 6 ++++--
> >>  drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c | 7 +++++++
> >> drivers/media/platform/chips-media/wave5/wave5-vpuapi.h  | 1 +
> >>  3 files changed, 12 insertions(+), 2 deletions(-)
> >>
> >> diff --git a/drivers/media/platform/chips-media/wave5/wave5-hw.c
> >> b/drivers/media/platform/chips-media/wave5/wave5-hw.c
> >> index f1e022fb148e..8ad7f3a28ae1 100644
> >> --- a/drivers/media/platform/chips-media/wave5/wave5-hw.c
> >> +++ b/drivers/media/platform/chips-media/wave5/wave5-hw.c
> >> @@ -1602,11 +1602,13 @@ int wave5_vpu_enc_init_seq(struct vpu_instance
> *inst)
> >>  	if (inst->std == W_AVC_ENC)
> >>  		vpu_write_reg(inst->dev, W5_CMD_ENC_SEQ_INTRA_PARAM,
> p_param->intra_qp |
> >>  				((p_param->intra_period & 0x7ff) << 6) |
> >> -				((p_param->avc_idr_period & 0x7ff) << 17));
> >> +				((p_param->avc_idr_period & 0x7ff) << 17) |
> >> +				(p_param->forced_idr_header_enable << 28));
> >
> >I can spot evident hard-coding of mask and bit shifts in here. In order
> >to continuously improve this driver code, I would like to see this (and
> >the
> >following) magic number being defined with well named macros as a
> >preparation patch to this feature change.
> >
> >regards,
> >Nicolas
> >
> >>  	else if (inst->std == W_HEVC_ENC)
> >>  		vpu_write_reg(inst->dev, W5_CMD_ENC_SEQ_INTRA_PARAM,
> >>  			      p_param->decoding_refresh_type | (p_param-
> >intra_qp << 3) |
> >> -				(p_param->intra_period << 16));
> >> +			      (p_param->forced_idr_header_enable << 9) |
> >> +			      (p_param->intra_period << 16));
> >>
> >>  	reg_val = (p_param->rdo_skip << 2) |
> >>  		(p_param->lambda_scaling_enable << 3) | 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 0cb5bfb67258..761775216cd4 100644
> >> --- a/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
> >> +++ b/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
> >> @@ -1125,6 +1125,9 @@ static int wave5_vpu_enc_s_ctrl(struct v4l2_ctrl
> *ctrl)
> >>  	case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:
> >>  		inst->enc_param.entropy_coding_mode = ctrl->val;
> >>  		break;
> >> +	case V4L2_CID_MPEG_VIDEO_PREPEND_SPSPPS_TO_IDR:
> >> +		inst->enc_param.forced_idr_header_enable = ctrl->val;
> >> +		break;
> >>  	case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT:
> >>  		break;
> >>  	default:
> >> @@ -1292,6 +1295,7 @@ static void wave5_set_enc_openparam(struct
> enc_open_param *open_param,
> >>  		else
> >>  			open_param->wave_param.intra_refresh_arg = num_ctu_row;
> >>  	}
> >> +	open_param->wave_param.forced_idr_header_enable =
> >> +input.forced_idr_header_enable;
> >>  }
> >>
> >>  static int initialize_sequence(struct vpu_instance *inst) @@ -1775,6
> >> +1779,9 @@ static int wave5_vpu_open_enc(struct file *filp)
> >>  			  0, 1, 1, 0);
> >>  	v4l2_ctrl_new_std(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops,
> >>  			  V4L2_CID_MIN_BUFFERS_FOR_OUTPUT, 1, 32, 1, 1);
> >> +	v4l2_ctrl_new_std(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops,
> >> +			  V4L2_CID_MPEG_VIDEO_PREPEND_SPSPPS_TO_IDR,
> >> +			  0, 1, 1, 0);
> >>
> >>  	if (v4l2_ctrl_hdl->error) {
> >>  		ret = -ENODEV;
> >> diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h
> >> b/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h
> >> index 352f6e904e50..3ad6118550ac 100644
> >> --- a/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h
> >> +++ b/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h
> >> @@ -566,6 +566,7 @@ struct enc_wave_param {
> >>  	u32 lambda_scaling_enable: 1; /* enable lambda scaling using custom
> GOP */
> >>  	u32 transform8x8_enable: 1; /* enable 8x8 intra prediction and 8x8
> transform */
> >>  	u32 mb_level_rc_enable: 1; /* enable MB-level rate control */
> >> +	u32 forced_idr_header_enable: 1; /* enable header encoding before
> >> +IDR frame */
> >>  };
> >>
> >>  struct enc_open_param {
> >
> >