linux-kernel - Re: [PATCH 16/33] iris: add helpers for media format

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Message-ID: <ae50edf0-8c3a-97c5-32da-25118f36066f@quicinc.com>
Date:   Tue, 15 Aug 2023 00:48:54 +0530
From:   Dikshita Agarwal <quic_dikshita@...cinc.com>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Vikash Garodia <quic_vgarodia@...cinc.com>,
        <stanimir.k.varbanov@...il.com>, <agross@...nel.org>,
        <andersson@...nel.org>, <mchehab@...nel.org>,
        <hans.verkuil@...co.com>, <linux-kernel@...r.kernel.org>,
        <linux-media@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>
Subject: Re: [PATCH 16/33] iris: add helpers for media format



On 7/28/2023 11:25 PM, Konrad Dybcio wrote:
> On 28.07.2023 15:23, Vikash Garodia wrote:
>> From: Dikshita Agarwal <quic_dikshita@...cinc.com>
>>
>> Add helpers to calculate stride, scanline, buffer size
>> etc. for different media formats.
>>
>> Signed-off-by: Dikshita Agarwal <quic_dikshita@...cinc.com>
>> Signed-off-by: Vikash Garodia <quic_vgarodia@...cinc.com>
>> ---
> [...]
> 
> 
>> +
>> +#ifndef MSM_MEDIA_ALIGN
>> +#define MSM_MEDIA_ALIGN(__sz, __align) (((__align) & ((__align) - 1)) ?\
>> +	((((__sz) + (__align) - 1) / (__align)) * (__align)) :\
>> +	(((__sz) + (__align) - 1) & (~((__align) - 1))))
> <linux/align.h>?
> 
sure, will replace with standard ALIGN macro
>> +#endif
>> +
>> +#ifndef MSM_MEDIA_ROUNDUP
>> +#define MSM_MEDIA_ROUNDUP(__sz, __r) (((__sz) + ((__r) - 1)) / (__r))
>> +#endif
>> +
>> +/*
>> + * Function arguments:
>> + * @v4l2_fmt
>> + * @width
>> + * Progressive: width
>> + * Interlaced: width
>> + */
> Kerneldoc would be cooler
> 
Sure, will take care of this in next version.
> [...]
> 
>> +static inline unsigned int video_rgb_stride_pix(unsigned int colorformat,
>> +						unsigned int width)
>> +{
>> +	unsigned int bpp = 4;
> Always?
Will check more on this if all supported RGB formats have bpp as 4.

Thanks,
Dikshita
> 
> 
> Konrad