libcamera v0.0.0+3423-a7ab5ef1
Supporting cameras in Linux since 2019
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The base class for all IPA algorithms. More...
Public Member Functions | |
virtual int | configure (Context &context, const Config &configInfo) |
Configure the Algorithm given an IPAConfigInfo. More... | |
virtual void | prepare (Context &context, Params *params) |
Fill the params buffer with ISP processing parameters for a frame. More... | |
virtual void | process (Context &context, const Stats *stats) |
Process ISP statistics, and run algorithm operations. More... | |
The base class for all IPA algorithms.
Context | The type of shared IPA context |
Config | The type of the IPA configuration data |
Params | The type of the ISP specific parameters |
Stats | The type of the IPA statistics and ISP results |
The Algorithm class defines a standard interface for IPA algorithms. By abstracting algorithms, it makes possible the implementation of generic code to manage algorithms regardless of their specific type.
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inlinevirtual |
Configure the Algorithm given an IPAConfigInfo.
[in] | context | The shared IPA context |
[in] | configInfo | The IPA configuration data, received from the pipeline handler |
Algorithms may implement a configure operation to pre-calculate parameters prior to commencing streaming.
Configuration state may be stored in the IPASessionConfiguration structure of the IPAContext.
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inlinevirtual |
Fill the params buffer with ISP processing parameters for a frame.
[in] | context | The shared IPA context |
[out] | params | The ISP specific parameters. |
This function is called for every frame when the camera is running before it is processed by the ISP to prepare the ISP processing parameters for that frame.
Algorithms shall fill in the parameter structure fields appropriately to configure the ISP processing blocks that they are responsible for. This includes setting fields and flags that enable those processing blocks.
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inlinevirtual |
Process ISP statistics, and run algorithm operations.
[in] | context | The shared IPA context |
[in] | stats | The IPA statistics and ISP results |
This function is called while camera is running for every frame processed by the ISP, to process statistics generated from that frame by the ISP. Algorithms shall use this data to run calculations and update their state accordingly.
Processing shall not take an undue amount of time, and any extended or computationally expensive calculations or operations must be handled asynchronously in a separate thread.
Algorithms can store state in their respective IPAFrameContext structures, and reference state from the IPAFrameContext of other algorithms.
Care shall be taken to ensure the ordering of access to the information such that the algorithms use up to date state as required.