linux-kernel - Re: [PATCH v3 1/2] media: venus: Helper function for dynamically updating bitrate

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Message-ID: <079045ac-27e7-43f4-a4a4-bc9d03de61c8@linaro.org>
Date: Wed, 16 Oct 2024 00:12:55 +0100
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Fritz Koenig <frkoenig@...omium.org>,
 Stanimir Varbanov <stanimir.k.varbanov@...il.com>,
 Vikash Garodia <quic_vgarodia@...cinc.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>,
 Dikshita Agarwal <quic_dikshita@...cinc.com>
Cc: Nathan Hebert <nhebert@...omium.org>, linux-media@...r.kernel.org,
 linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/2] media: venus: Helper function for dynamically
 updating bitrate

On 14/08/2024 23:14, Fritz Koenig wrote:
> Move the dynamic bitrate updating functionality to a separate function
> so that it can be shared.
> 
> No functionality changes.
> 
> Signed-off-by: Fritz Koenig <frkoenig@...omium.org>
> ---
>   drivers/media/platform/qcom/venus/venc_ctrls.c | 34 +++++++++++++++-----------
>   1 file changed, 20 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/media/platform/qcom/venus/venc_ctrls.c b/drivers/media/platform/qcom/venus/venc_ctrls.c
> index d9d2a293f3ef..3e1f6f26eddf 100644
> --- a/drivers/media/platform/qcom/venus/venc_ctrls.c
> +++ b/drivers/media/platform/qcom/venus/venc_ctrls.c
> @@ -67,12 +67,28 @@ static int venc_calc_bpframes(u32 gop_size, u32 conseq_b, u32 *bf, u32 *pf)
>   	return 0;
>   }
>   
> +static int dynamic_bitrate_update(struct venus_inst *inst, u32 bitrate,
> +				  u32 layer_id)
> +{
> +	int ret = 0;
> +
> +	mutex_lock(&inst->lock);
> +	if (inst->streamon_out && inst->streamon_cap) {
> +		u32 ptype = HFI_PROPERTY_CONFIG_VENC_TARGET_BITRATE;
> +		struct hfi_bitrate brate = { .bitrate = bitrate, .layer_id = layer_id };
> +
> +		ret = hfi_session_set_property(inst, ptype, &brate);
> +	}
> +	mutex_unlock(&inst->lock);
> +
> +	return ret;
> +}
> +
>   static int venc_op_s_ctrl(struct v4l2_ctrl *ctrl)
>   {
>   	struct venus_inst *inst = ctrl_to_inst(ctrl);
>   	struct venc_controls *ctr = &inst->controls.enc;
>   	struct hfi_enable en = { .enable = 1 };
> -	struct hfi_bitrate brate;
>   	struct hfi_ltr_use ltr_use;
>   	struct hfi_ltr_mark ltr_mark;
>   	u32 bframes;
> @@ -85,19 +101,9 @@ static int venc_op_s_ctrl(struct v4l2_ctrl *ctrl)
>   		break;
>   	case V4L2_CID_MPEG_VIDEO_BITRATE:
>   		ctr->bitrate = ctrl->val;
> -		mutex_lock(&inst->lock);
> -		if (inst->streamon_out && inst->streamon_cap) {
> -			ptype = HFI_PROPERTY_CONFIG_VENC_TARGET_BITRATE;
> -			brate.bitrate = ctr->bitrate;
> -			brate.layer_id = 0;
> -
> -			ret = hfi_session_set_property(inst, ptype, &brate);
> -			if (ret) {
> -				mutex_unlock(&inst->lock);
> -				return ret;
> -			}
> -		}
> -		mutex_unlock(&inst->lock);
> +		ret = dynamic_bitrate_update(inst, ctr->bitrate, 0);
> +		if (ret)
> +			return ret;
>   		break;
>   	case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
>   		ctr->bitrate_peak = ctrl->val;
> 

Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>