Messages in this thread | | | Date | Mon, 21 Nov 2022 15:31:32 +0200 | From | Andy Shevchenko <> | Subject | Re: [PATCH v1 1/1] atomisp: Make bds_factors_list be type of struct u32_fract |
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On Mon, Nov 21, 2022 at 02:21:30PM +0100, Hans de Goede wrote: > On 11/18/22 19:43, Andy Shevchenko wrote:
...
> Thanks, patch looks good to me: > > Reviewed-by: Hans de Goede <hdegoede@redhat.com> > > I've added this to my media-atomisp branch now and will > include this in the pull-req which I will send to Mauro after I've > run some quick tests (tonight or tomorrow).
Thank you!
...
> > res->sc_bayer_origin_x_bqs_on_shading_table = > > ((left_padding_adjusted_bqs + bad_bqs_on_left_before_bs) > > - * bs_hor_ratio_out + bs_hor_ratio_in / 2) / bs_hor_ratio_in > > + * bds.denominator + bds.numerator / 2) / bds.numerator > > + bad_bqs_on_left_after_bs; > > - /* "+ bs_hor_ratio_in/2": rounding for division by bs_hor_ratio_in */ > > + /* "+ bds.numerator / 2": rounding for division by bds.numerator */ > > res->sc_bayer_origin_y_bqs_on_shading_table = > > - (bad_bqs_on_top_before_bs * bs_ver_ratio_out + bs_ver_ratio_in / 2) / bs_ver_ratio_in > > + (bad_bqs_on_top_before_bs * bds.denominator + bds.numerator / 2) / bds.numerator > > + bad_bqs_on_top_after_bs; > > - /* "+ bs_ver_ratio_in/2": rounding for division by bs_ver_ratio_in */ > > + /* "+ bds.numerator / 2": rounding for division by bds.numerator */
While reading this code again I just realized this is open coded DIV_ROUND_CLOSEST(). But, thinking more, I believe we may rather introduce the FRACT_DIV_ROUND_CLOSEST() macro in the math.h and take struct *_fract as a parameter. In any case, it's for the future improvements.
-- With Best Regards, Andy Shevchenko
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