[libcamera-devel] [PATCH 1/2] ipa: ipu3: agc: Reset frame count when configuring AGC

[Jean-Michel Hautbois]

Hi Laurent,

On 15/03/2022 14:34, Laurent Pinchart via libcamera-devel wrote:
> The frame count is used to skip the gain and exposure filtering when
> starting. It thus needs to be reset when configuring the algorithm, to
> avoid slower convergence when stopping and restarting.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois at ideasonboard.com>

> ---
>   src/ipa/ipu3/algorithms/agc.cpp | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/src/ipa/ipu3/algorithms/agc.cpp b/src/ipa/ipu3/algorithms/agc.cpp
> index 1eb1bcef2f02..70cff3fed43c 100644
> --- a/src/ipa/ipu3/algorithms/agc.cpp
> +++ b/src/ipa/ipu3/algorithms/agc.cpp
> @@ -102,6 +102,7 @@ int Agc::configure(IPAContext &context,
>   	frameContext.agc.gain = std::max(minAnalogueGain_, kMinAnalogueGain);
>   	frameContext.agc.exposure = 10ms / configuration.sensor.lineDuration;
>   
> +	frameCount_ = 0;
>   	return 0;
>   }
>   
> 
> base-commit: e41854a4e6fde2dd9e2a2a7290670943235776cd