[libcamera-devel] [PATCH v2 08/10] ipa: libipa: algorithm: prepare(): Pass frame and frame Context

Umang Jain umang.jain at ideasonboard.com
Thu Aug 11 09:00:36 CEST 2022


Hi Jacopo

Thank you for the patch.

On 8/5/22 19:23, Jacopo Mondi via libcamera-devel wrote:
> From: Kieran Bingham via libcamera-devel <libcamera-devel at lists.libcamera.org>
>
> Pass the current frame number, and the current FrameContext for calls to
> prepare.
>
> Until there is a Frame Context Queue in the RKISP1 the FrameContext will


I think there is FCQueue in RkISP1 now, so should this commit message be 
updated accordingly?

> be a nullptr, and must not be dereferenced until the queue is
> implemented.
>
> Signed-off-by: Kieran Bingham <kieran.bingham at ideasonboard.com>
>
>   - Obtain and use the RKISP1FrameContext Queue entry for IPARkISP1::fillParamsBuffer
>
> Signed-off-by: Kieran Bingham <kieran.bingham at ideasonboard.com>
> Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>
> ---
>   src/ipa/ipu3/algorithms/af.cpp           | 5 ++++-
>   src/ipa/ipu3/algorithms/af.h             | 4 +++-
>   src/ipa/ipu3/algorithms/awb.cpp          | 5 ++++-
>   src/ipa/ipu3/algorithms/awb.h            | 5 ++++-
>   src/ipa/ipu3/algorithms/blc.cpp          | 6 +++++-
>   src/ipa/ipu3/algorithms/blc.h            | 4 +++-
>   src/ipa/ipu3/algorithms/tone_mapping.cpp | 4 ++++
>   src/ipa/ipu3/algorithms/tone_mapping.h   | 3 ++-
>   src/ipa/ipu3/ipu3.cpp                    | 4 +++-
>   src/ipa/libipa/algorithm.cpp             | 2 ++
>   src/ipa/libipa/algorithm.h               | 2 ++
>   src/ipa/rkisp1/algorithms/agc.cpp        | 5 ++++-
>   src/ipa/rkisp1/algorithms/agc.h          | 4 +++-
>   src/ipa/rkisp1/algorithms/awb.cpp        | 5 ++++-
>   src/ipa/rkisp1/algorithms/awb.h          | 4 +++-
>   src/ipa/rkisp1/algorithms/blc.cpp        | 2 ++
>   src/ipa/rkisp1/algorithms/blc.h          | 4 +++-
>   src/ipa/rkisp1/algorithms/cproc.cpp      | 2 ++
>   src/ipa/rkisp1/algorithms/cproc.h        | 4 +++-
>   src/ipa/rkisp1/algorithms/dpcc.cpp       | 2 ++
>   src/ipa/rkisp1/algorithms/dpcc.h         | 4 +++-
>   src/ipa/rkisp1/algorithms/filter.cpp     | 5 ++++-
>   src/ipa/rkisp1/algorithms/filter.h       | 4 +++-
>   src/ipa/rkisp1/algorithms/gsl.cpp        | 2 ++
>   src/ipa/rkisp1/algorithms/gsl.h          | 4 +++-
>   src/ipa/rkisp1/algorithms/lsc.cpp        | 2 ++
>   src/ipa/rkisp1/algorithms/lsc.h          | 4 +++-
>   src/ipa/rkisp1/rkisp1.cpp                | 4 +++-
>   28 files changed, 85 insertions(+), 20 deletions(-)
>
> diff --git a/src/ipa/ipu3/algorithms/af.cpp b/src/ipa/ipu3/algorithms/af.cpp
> index fcbf8e557b10..1faf92969ee5 100644
> --- a/src/ipa/ipu3/algorithms/af.cpp
> +++ b/src/ipa/ipu3/algorithms/af.cpp
> @@ -116,7 +116,10 @@ Af::Af()
>   /**
>    * \copydoc libcamera::ipa::Algorithm::prepare
>    */
> -void Af::prepare(IPAContext &context, ipu3_uapi_params *params)
> +void Af::prepare(IPAContext &context,
> +		 [[maybe_unused]] unsigned int frame,
> +		 [[maybe_unused]] IPU3FrameContext &frameContext,
> +		 ipu3_uapi_params *params)
>   {
>   	const struct ipu3_uapi_grid_config &grid = context.configuration.af.afGrid;
>   	params->acc_param.af.grid_cfg = grid;
> diff --git a/src/ipa/ipu3/algorithms/af.h b/src/ipa/ipu3/algorithms/af.h
> index 7a5aeb1b6bf4..4e2bbd08c3bf 100644
> --- a/src/ipa/ipu3/algorithms/af.h
> +++ b/src/ipa/ipu3/algorithms/af.h
> @@ -30,8 +30,10 @@ public:
>   	Af();
>   	~Af() = default;
>   
> -	void prepare(IPAContext &context, ipu3_uapi_params *params) override;
>   	int configure(IPAContext &context, const IPAConfigInfo &configInfo) override;
> +	void prepare(IPAContext &context, unsigned int frame,
> +		     IPU3FrameContext &frameContext,
> +		     ipu3_uapi_params *params) override;
>   	void process(IPAContext &context, IPU3FrameContext &frameContext,
>   		     const ipu3_uapi_stats_3a *stats) override;
>   
> diff --git a/src/ipa/ipu3/algorithms/awb.cpp b/src/ipa/ipu3/algorithms/awb.cpp
> index 45f8e5f29119..b110ad404fd1 100644
> --- a/src/ipa/ipu3/algorithms/awb.cpp
> +++ b/src/ipa/ipu3/algorithms/awb.cpp
> @@ -430,7 +430,10 @@ constexpr uint16_t Awb::gainValue(double gain)
>   /**
>    * \copydoc libcamera::ipa::Algorithm::prepare
>    */
> -void Awb::prepare(IPAContext &context, ipu3_uapi_params *params)
> +void Awb::prepare(IPAContext &context,
> +		  [[maybe_unused]] unsigned int frame,
> +		  [[maybe_unused]] IPU3FrameContext &frameContext,
> +		  ipu3_uapi_params *params)
>   {
>   	/*
>   	 * Green saturation thresholds are reduced because we are using the
> diff --git a/src/ipa/ipu3/algorithms/awb.h b/src/ipa/ipu3/algorithms/awb.h
> index 28e39620fd59..731e5bae17de 100644
> --- a/src/ipa/ipu3/algorithms/awb.h
> +++ b/src/ipa/ipu3/algorithms/awb.h
> @@ -39,7 +39,10 @@ public:
>   	~Awb();
>   
>   	int configure(IPAContext &context, const IPAConfigInfo &configInfo) override;
> -	void prepare(IPAContext &context, ipu3_uapi_params *params) override;
> +
> +	void prepare(IPAContext &context, unsigned int frame,
> +		     IPU3FrameContext &frameContext,
> +		     ipu3_uapi_params *params) override;
>   	void process(IPAContext &context, IPU3FrameContext &frameContext,
>   		     const ipu3_uapi_stats_3a *stats) override;
>   
> diff --git a/src/ipa/ipu3/algorithms/blc.cpp b/src/ipa/ipu3/algorithms/blc.cpp
> index 78ab7bff549f..7b0d720a5970 100644
> --- a/src/ipa/ipu3/algorithms/blc.cpp
> +++ b/src/ipa/ipu3/algorithms/blc.cpp
> @@ -39,13 +39,17 @@ BlackLevelCorrection::BlackLevelCorrection()
>   /**
>    * \brief Fill in the parameter structure, and enable black level correction
>    * \param context The shared IPA context
> + * \param[in] frame The frame context sequence number
> + * \param[in] frameContext The FrameContext for this frame
>    * \param params The IPU3 parameters
>    *
>    * Populate the IPU3 parameter structure with the correction values for each
>    * channel and enable the corresponding ImgU block processing.
>    */
>   void BlackLevelCorrection::prepare([[maybe_unused]] IPAContext &context,
> -			      ipu3_uapi_params *params)
> +				   [[maybe_unused]] unsigned int frame,
> +				   [[maybe_unused]] IPU3FrameContext &frameContext,
> +				   ipu3_uapi_params *params)
>   {
>   	/*
>   	 * The Optical Black Level correction values
> diff --git a/src/ipa/ipu3/algorithms/blc.h b/src/ipa/ipu3/algorithms/blc.h
> index d8da1748baba..36388b267eea 100644
> --- a/src/ipa/ipu3/algorithms/blc.h
> +++ b/src/ipa/ipu3/algorithms/blc.h
> @@ -18,7 +18,9 @@ class BlackLevelCorrection : public Algorithm
>   public:
>   	BlackLevelCorrection();
>   
> -	void prepare(IPAContext &context, ipu3_uapi_params *params) override;
> +	void prepare(IPAContext &context, unsigned int frame,
> +		     IPU3FrameContext &frameContext,
> +		     ipu3_uapi_params *params) override;
>   };
>   
>   } /* namespace ipa::ipu3::algorithms */
> diff --git a/src/ipa/ipu3/algorithms/tone_mapping.cpp b/src/ipa/ipu3/algorithms/tone_mapping.cpp
> index 977741c5a4d4..0951db43f53f 100644
> --- a/src/ipa/ipu3/algorithms/tone_mapping.cpp
> +++ b/src/ipa/ipu3/algorithms/tone_mapping.cpp
> @@ -50,12 +50,16 @@ int ToneMapping::configure(IPAContext &context,
>   /**
>    * \brief Fill in the parameter structure, and enable gamma control
>    * \param context The shared IPA context
> + * \param[in] frame The frame context sequence number
> + * \param[in] frameContext The FrameContext for this frame
>    * \param params The IPU3 parameters
>    *
>    * Populate the IPU3 parameter structure with our tone mapping look up table and
>    * enable the gamma control module in the processing blocks.
>    */
>   void ToneMapping::prepare([[maybe_unused]] IPAContext &context,
> +			  [[maybe_unused]] unsigned int frame,
> +			  [[maybe_unused]] IPU3FrameContext &frameContext,
>   			  ipu3_uapi_params *params)
>   {
>   	/* Copy the calculated LUT into the parameters buffer. */
> diff --git a/src/ipa/ipu3/algorithms/tone_mapping.h b/src/ipa/ipu3/algorithms/tone_mapping.h
> index 8cce38c742a6..cfb3de01b7f3 100644
> --- a/src/ipa/ipu3/algorithms/tone_mapping.h
> +++ b/src/ipa/ipu3/algorithms/tone_mapping.h
> @@ -19,7 +19,8 @@ public:
>   	ToneMapping();
>   
>   	int configure(IPAContext &context, const IPAConfigInfo &configInfo) override;
> -	void prepare(IPAContext &context, ipu3_uapi_params *params) override;
> +	void prepare(IPAContext &context, unsigned int frame,
> +		     IPU3FrameContext &frameContext, ipu3_uapi_params *params) override;
>   	void process(IPAContext &context, IPU3FrameContext &frameContext,
>   		     const ipu3_uapi_stats_3a *stats) override;
>   
> diff --git a/src/ipa/ipu3/ipu3.cpp b/src/ipa/ipu3/ipu3.cpp
> index 24839fd1edee..ffb9ea8c5971 100644
> --- a/src/ipa/ipu3/ipu3.cpp
> +++ b/src/ipa/ipu3/ipu3.cpp
> @@ -538,8 +538,10 @@ void IPAIPU3::fillParamsBuffer(const uint32_t frame, const uint32_t bufferId)
>   	 */
>   	params->use = {};
>   
> +	IPU3FrameContext frameContext = context_.frameContexts.get(frame);

Won't this copy IPU3FrameContext ? I think here we need

     IPU3FrameContext &frameContext = context_.frameContexts.get(frame);

> +
>   	for (auto const &algo : algorithms_)
> -		algo->prepare(context_, params);
> +		algo->prepare(context_, frame, frameContext, params);
>   
>   	paramsBufferReady.emit(frame);
>   }
> diff --git a/src/ipa/libipa/algorithm.cpp b/src/ipa/libipa/algorithm.cpp
> index 38200e57b780..0992e5de8dd5 100644
> --- a/src/ipa/libipa/algorithm.cpp
> +++ b/src/ipa/libipa/algorithm.cpp
> @@ -70,6 +70,8 @@ namespace ipa {
>    * \fn Algorithm::prepare()
>    * \brief Fill the \a params buffer with ISP processing parameters for a frame
>    * \param[in] context The shared IPA context
> + * \param[in] frame The frame context sequence number
> + * \param[in] frameContext The FrameContext for this frame
>    * \param[out] params The ISP specific parameters.
>    *
>    * This function is called for every frame when the camera is running before it
> diff --git a/src/ipa/libipa/algorithm.h b/src/ipa/libipa/algorithm.h
> index 0fe3d772963a..379207f1657e 100644
> --- a/src/ipa/libipa/algorithm.h
> +++ b/src/ipa/libipa/algorithm.h
> @@ -38,6 +38,8 @@ public:
>   	}
>   
>   	virtual void prepare([[maybe_unused]] typename Module::Context &context,
> +			     [[maybe_unused]] unsigned int frame,
> +			     [[maybe_unused]] typename Module::FrameContext &frameContext,
>   			     [[maybe_unused]] typename Module::Params *params)
>   	{
>   	}
> diff --git a/src/ipa/rkisp1/algorithms/agc.cpp b/src/ipa/rkisp1/algorithms/agc.cpp
> index 40d27963ef68..2d436511caf7 100644
> --- a/src/ipa/rkisp1/algorithms/agc.cpp
> +++ b/src/ipa/rkisp1/algorithms/agc.cpp
> @@ -322,7 +322,10 @@ void Agc::process(IPAContext &context,
>   /**
>    * \copydoc libcamera::ipa::Algorithm::prepare
>    */
> -void Agc::prepare(IPAContext &context, rkisp1_params_cfg *params)
> +void Agc::prepare(IPAContext &context,
> +		  [[maybe_unused]] unsigned int frame,
> +		  [[maybe_unused]] RKISP1FrameContext &frameContext,
> +		  rkisp1_params_cfg *params)
>   {
>   	if (context.activeState.frameCount > 0)
>   		return;
> diff --git a/src/ipa/rkisp1/algorithms/agc.h b/src/ipa/rkisp1/algorithms/agc.h
> index af7fe2740908..97ca0e31558c 100644
> --- a/src/ipa/rkisp1/algorithms/agc.h
> +++ b/src/ipa/rkisp1/algorithms/agc.h
> @@ -26,7 +26,9 @@ public:
>   	~Agc() = default;
>   
>   	int configure(IPAContext &context, const IPACameraSensorInfo &configInfo) override;
> -	void prepare(IPAContext &context, rkisp1_params_cfg *params) override;
> +	void prepare(IPAContext &context, unsigned int frame,
> +		     RKISP1FrameContext &frameContext,
> +		     rkisp1_params_cfg *params) override;
>   	void process(IPAContext &context, RKISP1FrameContext &frameContext,
>   		     const rkisp1_stat_buffer *stats) override;
>   
> diff --git a/src/ipa/rkisp1/algorithms/awb.cpp b/src/ipa/rkisp1/algorithms/awb.cpp
> index 3beafb73ca33..1af6d98c5252 100644
> --- a/src/ipa/rkisp1/algorithms/awb.cpp
> +++ b/src/ipa/rkisp1/algorithms/awb.cpp
> @@ -70,7 +70,10 @@ uint32_t Awb::estimateCCT(double red, double green, double blue)
>   /**
>    * \copydoc libcamera::ipa::Algorithm::prepare
>    */
> -void Awb::prepare(IPAContext &context, rkisp1_params_cfg *params)
> +void Awb::prepare(IPAContext &context,
> +		  [[maybe_unused]] unsigned int frame,
> +		  [[maybe_unused]] RKISP1FrameContext &frameContext,
> +		  rkisp1_params_cfg *params)
>   {
>   	params->others.awb_gain_config.gain_green_b = 256 * context.activeState.awb.gains.green;
>   	params->others.awb_gain_config.gain_blue = 256 * context.activeState.awb.gains.blue;
> diff --git a/src/ipa/rkisp1/algorithms/awb.h b/src/ipa/rkisp1/algorithms/awb.h
> index 5954034b8142..82d5ce1b1818 100644
> --- a/src/ipa/rkisp1/algorithms/awb.h
> +++ b/src/ipa/rkisp1/algorithms/awb.h
> @@ -20,7 +20,9 @@ public:
>   	~Awb() = default;
>   
>   	int configure(IPAContext &context, const IPACameraSensorInfo &configInfo) override;
> -	void prepare(IPAContext &context, rkisp1_params_cfg *params) override;
> +	void prepare(IPAContext &context, unsigned int frame,
> +		     RKISP1FrameContext &frameContext,
> +		     rkisp1_params_cfg *params) override;
>   	void process(IPAContext &context, RKISP1FrameContext &frameCtx,
>   		     const rkisp1_stat_buffer *stats) override;
>   
> diff --git a/src/ipa/rkisp1/algorithms/blc.cpp b/src/ipa/rkisp1/algorithms/blc.cpp
> index 4d55a2d529cb..93c7e3145fa2 100644
> --- a/src/ipa/rkisp1/algorithms/blc.cpp
> +++ b/src/ipa/rkisp1/algorithms/blc.cpp
> @@ -66,6 +66,8 @@ int BlackLevelCorrection::init([[maybe_unused]] IPAContext &context,
>    * \copydoc libcamera::ipa::Algorithm::prepare
>    */
>   void BlackLevelCorrection::prepare(IPAContext &context,
> +				   [[maybe_unused]] unsigned int frame,
> +				   [[maybe_unused]] RKISP1FrameContext &frameContext,
>   				   rkisp1_params_cfg *params)
>   {
>   	if (context.activeState.frameCount > 0)
> diff --git a/src/ipa/rkisp1/algorithms/blc.h b/src/ipa/rkisp1/algorithms/blc.h
> index 5fc3a80fb638..1afa12f6b46e 100644
> --- a/src/ipa/rkisp1/algorithms/blc.h
> +++ b/src/ipa/rkisp1/algorithms/blc.h
> @@ -20,7 +20,9 @@ public:
>   	~BlackLevelCorrection() = default;
>   
>   	int init(IPAContext &context, const YamlObject &tuningData) override;
> -	void prepare(IPAContext &context, rkisp1_params_cfg *params) override;
> +	void prepare(IPAContext &context, unsigned int frame,
> +		     RKISP1FrameContext &frameContext,
> +		     rkisp1_params_cfg *params) override;
>   
>   private:
>   	bool tuningParameters_;
> diff --git a/src/ipa/rkisp1/algorithms/cproc.cpp b/src/ipa/rkisp1/algorithms/cproc.cpp
> index a3b778d1c908..edaf2d10e850 100644
> --- a/src/ipa/rkisp1/algorithms/cproc.cpp
> +++ b/src/ipa/rkisp1/algorithms/cproc.cpp
> @@ -71,6 +71,8 @@ void ColorProcessing::queueRequest(IPAContext &context,
>    * \copydoc libcamera::ipa::Algorithm::prepare
>    */
>   void ColorProcessing::prepare(IPAContext &context,
> +			      [[maybe_unused]] unsigned int frame,
> +			      [[maybe_unused]] RKISP1FrameContext &frameContext,
>   			      rkisp1_params_cfg *params)
>   {
>   	auto &cproc = context.activeState.cproc;
> diff --git a/src/ipa/rkisp1/algorithms/cproc.h b/src/ipa/rkisp1/algorithms/cproc.h
> index 4b7e4064d7e8..fde83f3c965c 100644
> --- a/src/ipa/rkisp1/algorithms/cproc.h
> +++ b/src/ipa/rkisp1/algorithms/cproc.h
> @@ -23,7 +23,9 @@ public:
>   
>   	void queueRequest(IPAContext &context, const uint32_t frame,
>   			  const ControlList &controls) override;
> -	void prepare(IPAContext &context, rkisp1_params_cfg *params) override;
> +	void prepare(IPAContext &context, unsigned int frame,
> +		     RKISP1FrameContext &frameContext,
> +		     rkisp1_params_cfg *params) override;
>   };
>   
>   } /* namespace ipa::rkisp1::algorithms */
> diff --git a/src/ipa/rkisp1/algorithms/dpcc.cpp b/src/ipa/rkisp1/algorithms/dpcc.cpp
> index 93d37b1dae44..9ba03653afdc 100644
> --- a/src/ipa/rkisp1/algorithms/dpcc.cpp
> +++ b/src/ipa/rkisp1/algorithms/dpcc.cpp
> @@ -232,6 +232,8 @@ int DefectPixelClusterCorrection::init([[maybe_unused]] IPAContext &context,
>    * \copydoc libcamera::ipa::Algorithm::prepare
>    */
>   void DefectPixelClusterCorrection::prepare(IPAContext &context,
> +					   [[maybe_unused]] unsigned int frame,
> +					   [[maybe_unused]] RKISP1FrameContext &frameContext,
>   					   rkisp1_params_cfg *params)
>   {
>   	if (context.activeState.frameCount > 0)
> diff --git a/src/ipa/rkisp1/algorithms/dpcc.h b/src/ipa/rkisp1/algorithms/dpcc.h
> index a363f7bee0a7..ca9df9fc38dc 100644
> --- a/src/ipa/rkisp1/algorithms/dpcc.h
> +++ b/src/ipa/rkisp1/algorithms/dpcc.h
> @@ -20,7 +20,9 @@ public:
>   	~DefectPixelClusterCorrection() = default;
>   
>   	int init(IPAContext &context, const YamlObject &tuningData) override;
> -	void prepare(IPAContext &context, rkisp1_params_cfg *params) override;
> +	void prepare(IPAContext &context, unsigned int frame,
> +		     RKISP1FrameContext &frameContext,
> +		     rkisp1_params_cfg *params) override;
>   
>   private:
>   	bool initialized_;
> diff --git a/src/ipa/rkisp1/algorithms/filter.cpp b/src/ipa/rkisp1/algorithms/filter.cpp
> index bc7fc1f32f34..f6577046442a 100644
> --- a/src/ipa/rkisp1/algorithms/filter.cpp
> +++ b/src/ipa/rkisp1/algorithms/filter.cpp
> @@ -85,7 +85,10 @@ void Filter::queueRequest(IPAContext &context,
>   /**
>    * \copydoc libcamera::ipa::Algorithm::prepare
>    */
> -void Filter::prepare(IPAContext &context, rkisp1_params_cfg *params)
> +void Filter::prepare(IPAContext &context,
> +		     [[maybe_unused]] unsigned int frame,
> +		     [[maybe_unused]] RKISP1FrameContext &frameContext,
> +		     rkisp1_params_cfg *params)
>   {
>   	auto &filter = context.activeState.filter;
>   
> diff --git a/src/ipa/rkisp1/algorithms/filter.h b/src/ipa/rkisp1/algorithms/filter.h
> index 9eb170eb7da1..1fbe785a3cab 100644
> --- a/src/ipa/rkisp1/algorithms/filter.h
> +++ b/src/ipa/rkisp1/algorithms/filter.h
> @@ -23,7 +23,9 @@ public:
>   
>   	void queueRequest(IPAContext &context, const uint32_t frame,
>   			  const ControlList &controls) override;
> -	void prepare(IPAContext &context, rkisp1_params_cfg *params) override;
> +	void prepare(IPAContext &context, unsigned int frame,
> +		     RKISP1FrameContext &frameContext,
> +		     rkisp1_params_cfg *params) override;
>   };
>   
>   } /* namespace ipa::rkisp1::algorithms */
> diff --git a/src/ipa/rkisp1/algorithms/gsl.cpp b/src/ipa/rkisp1/algorithms/gsl.cpp
> index dd9974627cd2..77d841cfbf82 100644
> --- a/src/ipa/rkisp1/algorithms/gsl.cpp
> +++ b/src/ipa/rkisp1/algorithms/gsl.cpp
> @@ -119,6 +119,8 @@ int GammaSensorLinearization::init([[maybe_unused]] IPAContext &context,
>    * \copydoc libcamera::ipa::Algorithm::prepare
>    */
>   void GammaSensorLinearization::prepare(IPAContext &context,
> +				       [[maybe_unused]] unsigned int frame,
> +				       [[maybe_unused]] RKISP1FrameContext &frameContext,
>   				       rkisp1_params_cfg *params)
>   {
>   	if (context.activeState.frameCount > 0)
> diff --git a/src/ipa/rkisp1/algorithms/gsl.h b/src/ipa/rkisp1/algorithms/gsl.h
> index db287dc280dc..fe74ae10e099 100644
> --- a/src/ipa/rkisp1/algorithms/gsl.h
> +++ b/src/ipa/rkisp1/algorithms/gsl.h
> @@ -20,7 +20,9 @@ public:
>   	~GammaSensorLinearization() = default;
>   
>   	int init(IPAContext &context, const YamlObject &tuningData) override;
> -	void prepare(IPAContext &context, rkisp1_params_cfg *params) override;
> +	void prepare(IPAContext &context, unsigned int frame,
> +		     RKISP1FrameContext &frameContext,
> +		     rkisp1_params_cfg *params) override;
>   
>   private:
>   	bool initialized_;
> diff --git a/src/ipa/rkisp1/algorithms/lsc.cpp b/src/ipa/rkisp1/algorithms/lsc.cpp
> index 4ed467086199..cd8fcbe66b9b 100644
> --- a/src/ipa/rkisp1/algorithms/lsc.cpp
> +++ b/src/ipa/rkisp1/algorithms/lsc.cpp
> @@ -123,6 +123,8 @@ int LensShadingCorrection::init([[maybe_unused]] IPAContext &context,
>    * \copydoc libcamera::ipa::Algorithm::prepare
>    */
>   void LensShadingCorrection::prepare(IPAContext &context,
> +				    [[maybe_unused]] unsigned int frame,
> +				    [[maybe_unused]] RKISP1FrameContext &frameContext,
>   				    rkisp1_params_cfg *params)
>   {
>   	if (context.activeState.frameCount > 0)
> diff --git a/src/ipa/rkisp1/algorithms/lsc.h b/src/ipa/rkisp1/algorithms/lsc.h
> index fdb2ec1dd27d..fafb80b329ee 100644
> --- a/src/ipa/rkisp1/algorithms/lsc.h
> +++ b/src/ipa/rkisp1/algorithms/lsc.h
> @@ -20,7 +20,9 @@ public:
>   	~LensShadingCorrection() = default;
>   
>   	int init(IPAContext &context, const YamlObject &tuningData) override;
> -	void prepare(IPAContext &context, rkisp1_params_cfg *params) override;
> +	void prepare(IPAContext &context, unsigned int frame,
> +		     RKISP1FrameContext &frameContext,
> +		     rkisp1_params_cfg *params) override;
>   
>   private:
>   	bool initialized_;
> diff --git a/src/ipa/rkisp1/rkisp1.cpp b/src/ipa/rkisp1/rkisp1.cpp
> index 2c7fdde55f49..f3512647a833 100644
> --- a/src/ipa/rkisp1/rkisp1.cpp
> +++ b/src/ipa/rkisp1/rkisp1.cpp
> @@ -302,6 +302,8 @@ void IPARkISP1::queueRequest(const uint32_t frame, const ControlList &controls)
>   
>   void IPARkISP1::fillParamsBuffer(const uint32_t frame, const uint32_t bufferId)
>   {
> +	RKISP1FrameContext &frameContext = context_.frameContexts.get(frame);


This seems correct :-)

With the IPU3FrameContext .get() fixed,

Reviewed-by: Umang Jain <umang.jain at ideasonboard.com>

> +
>   	rkisp1_params_cfg *params =
>   		reinterpret_cast<rkisp1_params_cfg *>(
>   			mappedBuffers_.at(bufferId).planes()[0].data());
> @@ -310,7 +312,7 @@ void IPARkISP1::fillParamsBuffer(const uint32_t frame, const uint32_t bufferId)
>   	memset(params, 0, sizeof(*params));
>   
>   	for (auto const &algo : algorithms())
> -		algo->prepare(context_, params);
> +		algo->prepare(context_, frame, frameContext, params);
>   
>   	paramsBufferReady.emit(frame);
>   	context_.activeState.frameCount++;


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