[libcamera-devel] [PATCH 4/7] libcamera: ipu3: imgu: Fix IF height selection

[Jean-Michel Hautbois]

Hi Jacopo,

Thanks for the patch,

On 18/03/2021 11:39, Jacopo Mondi wrote:
> Apply to calculateBDSHeight() function the first hunk of commit 243d134
> ("Fix some bug for some resolutions") from
> https://github.com/intel/intel-ipu3-pipecfg.git.
> 
> The condition for the computed IF rectangle height to be matched
> against the desired alignment now makes sure that it is included
> in the minimum and maximum acceptable values.
> 
> Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>
Tested-by: Jean-Michel Hautbois <jeanmichel.hautbois at ideasonboard.com>
Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois at ideasonboard.com>
> ---
>  src/libcamera/pipeline/ipu3/imgu.cpp | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/src/libcamera/pipeline/ipu3/imgu.cpp b/src/libcamera/pipeline/ipu3/imgu.cpp
> index 11bb7cb95084..89a01bddbed2 100644
> --- a/src/libcamera/pipeline/ipu3/imgu.cpp
> +++ b/src/libcamera/pipeline/ipu3/imgu.cpp
> @@ -135,7 +135,8 @@ void calculateBDSHeight(ImgUDevice::Pipe *pipe, const Size &iif, const Size &gdc
>  		estIFHeight = std::clamp<float>(estIFHeight, minIFHeight, iif.height);
>  
>  		ifHeight = utils::alignUp(estIFHeight, IF_ALIGN_H);
> -		while (ifHeight >= minIFHeight && ifHeight / bdsSF >= minBDSHeight) {
> +		while (ifHeight >= minIFHeight && ifHeight <= iif.height &&
> +		       ifHeight / bdsSF >= minBDSHeight) {
>  
>  			bdsHeight = ifHeight / bdsSF;
>  			if (std::fmod(bdsHeight, 1.0) == 0) {
> @@ -151,7 +152,8 @@ void calculateBDSHeight(ImgUDevice::Pipe *pipe, const Size &iif, const Size &gdc
>  		}
>  
>  		ifHeight = utils::alignUp(estIFHeight, IF_ALIGN_H);
> -		while (ifHeight <= iif.height && ifHeight / bdsSF >= minBDSHeight) {
> +		while (ifHeight >= minIFHeight && ifHeight <= iif.height &&
> +		       ifHeight / bdsSF >= minBDSHeight) {
>  
>  			bdsHeight = ifHeight / bdsSF;
>  			if (std::fmod(bdsHeight, 1.0) == 0) {
>