[libcamera-devel] [PATCH 1/4] libipa: algorithm: Pass frame number to prepare() and process()

Jean-Michel Hautbois jeanmichel.hautbois at ideasonboard.com
Mon Jan 3 18:19:59 CET 2022


Hi Umang,

Thanks for the patch.

On 03/01/2022 18:09, Umang Jain wrote:
> The frame number will be used to retrieve their respective
> IPAFrameContext from a container in subsequent commits.
> 
> Signed-off-by: Umang Jain <umang.jain at ideasonboard.com>
> ---
>   src/ipa/ipu3/algorithms/agc.cpp          | 3 ++-
>   src/ipa/ipu3/algorithms/agc.h            | 2 +-
>   src/ipa/ipu3/algorithms/awb.cpp          | 4 ++--
>   src/ipa/ipu3/algorithms/awb.h            | 4 ++--
>   src/ipa/ipu3/algorithms/blc.cpp          | 6 ++++--
>   src/ipa/ipu3/algorithms/blc.h            | 2 +-
>   src/ipa/ipu3/algorithms/tone_mapping.cpp | 7 +++++--
>   src/ipa/ipu3/algorithms/tone_mapping.h   | 4 ++--
>   src/ipa/ipu3/ipu3.cpp                    | 4 ++--
>   src/ipa/libipa/algorithm.cpp             | 2 ++
>   src/ipa/libipa/algorithm.h               | 6 ++++--
>   11 files changed, 27 insertions(+), 17 deletions(-)
> 
> diff --git a/src/ipa/ipu3/algorithms/agc.cpp b/src/ipa/ipu3/algorithms/agc.cpp
> index 8d6f18f6..1d0778d8 100644
> --- a/src/ipa/ipu3/algorithms/agc.cpp
> +++ b/src/ipa/ipu3/algorithms/agc.cpp
> @@ -307,13 +307,14 @@ double Agc::estimateLuminance(IPAFrameContext &frameContext,
>   
>   /**
>    * \brief Process IPU3 statistics, and run AGC operations
> + * \param frame The frame number
>    * \param[in] context The shared IPA context
>    * \param[in] stats The IPU3 statistics and ISP results
>    *
>    * Identify the current image brightness, and use that to estimate the optimal
>    * new exposure and gain for the scene.
>    */
> -void Agc::process(IPAContext &context, const ipu3_uapi_stats_3a *stats)
> +void Agc::process(const uint32_t frame, IPAContext &context, const ipu3_uapi_stats_3a *stats)

This is true for all the rest: why are you passing it to the function 
instead of including it in the frameContext ?

>   {
>   	/*
>   	 * Estimate the gain needed to have the proportion of pixels in a given
> diff --git a/src/ipa/ipu3/algorithms/agc.h b/src/ipa/ipu3/algorithms/agc.h
> index 96ec7005..c6ab8e91 100644
> --- a/src/ipa/ipu3/algorithms/agc.h
> +++ b/src/ipa/ipu3/algorithms/agc.h
> @@ -28,7 +28,7 @@ public:
>   	~Agc() = default;
>   
>   	int configure(IPAContext &context, const IPAConfigInfo &configInfo) override;
> -	void process(IPAContext &context, const ipu3_uapi_stats_3a *stats) override;
> +	void process(const uint32_t frame, IPAContext &context, const ipu3_uapi_stats_3a *stats) override;
>   
>   private:
>   	double measureBrightness(const ipu3_uapi_stats_3a *stats,
> diff --git a/src/ipa/ipu3/algorithms/awb.cpp b/src/ipa/ipu3/algorithms/awb.cpp
> index 1dc27fc9..99fb5305 100644
> --- a/src/ipa/ipu3/algorithms/awb.cpp
> +++ b/src/ipa/ipu3/algorithms/awb.cpp
> @@ -379,7 +379,7 @@ void Awb::calculateWBGains(const ipu3_uapi_stats_3a *stats)
>   /**
>    * \copydoc libcamera::ipa::Algorithm::process
>    */
> -void Awb::process(IPAContext &context, const ipu3_uapi_stats_3a *stats)
> +void Awb::process(const uint32_t frame, IPAContext &context, const ipu3_uapi_stats_3a *stats)
>   {
>   	calculateWBGains(stats);
>   
> @@ -403,7 +403,7 @@ constexpr uint16_t Awb::threshold(float value)
>   /**
>    * \copydoc libcamera::ipa::Algorithm::prepare
>    */
> -void Awb::prepare(IPAContext &context, ipu3_uapi_params *params)
> +void Awb::prepare([[maybe_unused]] const uint32_t frame, IPAContext &context, 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 ab4b0a33..ef177a4a 100644
> --- a/src/ipa/ipu3/algorithms/awb.h
> +++ b/src/ipa/ipu3/algorithms/awb.h
> @@ -39,8 +39,8 @@ public:
>   	~Awb();
>   
>   	int configure(IPAContext &context, const IPAConfigInfo &configInfo) override;
> -	void prepare(IPAContext &context, ipu3_uapi_params *params) override;
> -	void process(IPAContext &context, const ipu3_uapi_stats_3a *stats) override;
> +	void prepare(const uint32_t frame, IPAContext &context, ipu3_uapi_params *params) override;
> +	void process(const uint32_t frame, IPAContext &context, const ipu3_uapi_stats_3a *stats) override;
>   
>   private:
>   	/* \todo Make these structs available to all the ISPs ? */
> diff --git a/src/ipa/ipu3/algorithms/blc.cpp b/src/ipa/ipu3/algorithms/blc.cpp
> index 78ab7bff..e9b4bed8 100644
> --- a/src/ipa/ipu3/algorithms/blc.cpp
> +++ b/src/ipa/ipu3/algorithms/blc.cpp
> @@ -38,14 +38,16 @@ BlackLevelCorrection::BlackLevelCorrection()
>   
>   /**
>    * \brief Fill in the parameter structure, and enable black level correction
> + * \param frame The frame number
>    * \param context The shared IPA context
>    * \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)
> +void BlackLevelCorrection::prepare([[maybe_unused]] const uint32_t frame,
> +				   [[maybe_unused]] IPAContext &context,
> +				   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 d8da1748..e4c22070 100644
> --- a/src/ipa/ipu3/algorithms/blc.h
> +++ b/src/ipa/ipu3/algorithms/blc.h
> @@ -18,7 +18,7 @@ class BlackLevelCorrection : public Algorithm
>   public:
>   	BlackLevelCorrection();
>   
> -	void prepare(IPAContext &context, ipu3_uapi_params *params) override;
> +	void prepare(const uint32_t frame, IPAContext &context, 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 2040eda5..bba5bc9a 100644
> --- a/src/ipa/ipu3/algorithms/tone_mapping.cpp
> +++ b/src/ipa/ipu3/algorithms/tone_mapping.cpp
> @@ -49,13 +49,15 @@ int ToneMapping::configure(IPAContext &context,
>   
>   /**
>    * \brief Fill in the parameter structure, and enable gamma control
> + * \param frame The frame number
>    * \param context The shared IPA context
>    * \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,
> +void ToneMapping::prepare([[maybe_unused]] const uint32_t frame,
> +			  [[maybe_unused]] IPAContext &context,
>   			  ipu3_uapi_params *params)
>   {
>   	/* Copy the calculated LUT into the parameters buffer. */
> @@ -71,13 +73,14 @@ void ToneMapping::prepare([[maybe_unused]] IPAContext &context,
>   
>   /**
>    * \brief Calculate the tone mapping look up table
> + * \param frame The frame number
>    * \param context The shared IPA context
>    * \param stats The IPU3 statistics and ISP results
>    *
>    * The tone mapping look up table is generated as an inverse power curve from
>    * our gamma setting.
>    */
> -void ToneMapping::process(IPAContext &context,
> +void ToneMapping::process(const uint32_t frame, IPAContext &context,
>   			  [[maybe_unused]] const ipu3_uapi_stats_3a *stats)
>   {
>   	/*
> diff --git a/src/ipa/ipu3/algorithms/tone_mapping.h b/src/ipa/ipu3/algorithms/tone_mapping.h
> index b727ab1e..041c9c0d 100644
> --- a/src/ipa/ipu3/algorithms/tone_mapping.h
> +++ b/src/ipa/ipu3/algorithms/tone_mapping.h
> @@ -19,8 +19,8 @@ public:
>   	ToneMapping();
>   
>   	int configure(IPAContext &context, const IPAConfigInfo &configInfo) override;
> -	void prepare(IPAContext &context, ipu3_uapi_params *params) override;
> -	void process(IPAContext &context, const ipu3_uapi_stats_3a *stats) override;
> +	void prepare(const uint32_t frame, IPAContext &context, ipu3_uapi_params *params) override;
> +	void process(const uint32_t frame, IPAContext &context, const ipu3_uapi_stats_3a *stats) override;
>   
>   private:
>   	double gamma_;
> diff --git a/src/ipa/ipu3/ipu3.cpp b/src/ipa/ipu3/ipu3.cpp
> index 3d307708..aef232c3 100644
> --- a/src/ipa/ipu3/ipu3.cpp
> +++ b/src/ipa/ipu3/ipu3.cpp
> @@ -595,7 +595,7 @@ void IPAIPU3::fillParams(unsigned int frame, ipu3_uapi_params *params)
>   	params->use = {};
>   
>   	for (auto const &algo : algorithms_)
> -		algo->prepare(context_, params);
> +		algo->prepare(frame, context_, params);
>   
>   	IPU3Action op;
>   	op.op = ActionParamFilled;
> @@ -620,7 +620,7 @@ void IPAIPU3::parseStatistics(unsigned int frame,
>   	ControlList ctrls(controls::controls);
>   
>   	for (auto const &algo : algorithms_)
> -		algo->process(context_, stats);
> +		algo->process(frame, context_, stats);
>   
>   	setControls(frame);
>   
> diff --git a/src/ipa/libipa/algorithm.cpp b/src/ipa/libipa/algorithm.cpp
> index 398d5372..01967f07 100644
> --- a/src/ipa/libipa/algorithm.cpp
> +++ b/src/ipa/libipa/algorithm.cpp
> @@ -48,6 +48,7 @@ namespace ipa {
>   /**
>    * \fn Algorithm::prepare()
>    * \brief Fill the \a params buffer with ISP processing parameters for a frame
> + * \param[in] frame The frame number
>    * \param[in] context The shared IPA context
>    * \param[out] params The ISP specific parameters.
>    *
> @@ -63,6 +64,7 @@ namespace ipa {
>   /**
>    * \fn Algorithm::process()
>    * \brief Process ISP statistics, and run algorithm operations
> + * \param[in] frame The frame number
>    * \param[in] context The shared IPA context
>    * \param[in] stats The IPA statistics and ISP results
>    *
> diff --git a/src/ipa/libipa/algorithm.h b/src/ipa/libipa/algorithm.h
> index 766aee5d..1df93625 100644
> --- a/src/ipa/libipa/algorithm.h
> +++ b/src/ipa/libipa/algorithm.h
> @@ -22,12 +22,14 @@ public:
>   		return 0;
>   	}
>   
> -	virtual void prepare([[maybe_unused]] Context &context,
> +	virtual void prepare([[maybe_unused]] const uint32_t frame,
> +			     [[maybe_unused]] Context &context,
>   			     [[maybe_unused]] Params *params)
>   	{
>   	}
>   
> -	virtual void process([[maybe_unused]] Context &context,
> +	virtual void process([[maybe_unused]] const uint32_t frame,
> +			     [[maybe_unused]] Context &context,
>   			     [[maybe_unused]] const Stats *stats)
>   	{
>   	}
> 


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