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path: root/src/ipa/rkisp1/algorithms/agc.cpp
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2024-05-08libcamera: Drop file name from header comment blocksLaurent Pinchart
Source files in libcamera start by a comment block header, which includes the file name and a one-line description of the file contents. While the latter is useful to get a quick overview of the file contents at a glance, the former is mostly a source of inconvenience. The name in the comments can easily get out of sync with the file name when files are renamed, and copy & paste during development have often lead to incorrect names being used to start with. Readers of the source code are expected to know which file they're looking it. Drop the file name from the header comment block. The change was generated with the following script: ---------------------------------------- dirs="include/libcamera src test utils" declare -rA patterns=( ['c']=' \* ' ['cpp']=' \* ' ['h']=' \* ' ['py']='# ' ['sh']='# ' ) for ext in ${!patterns[@]} ; do files=$(for dir in $dirs ; do find $dir -name "*.${ext}" ; done) pattern=${patterns[${ext}]} for file in $files ; do name=$(basename ${file}) sed -i "s/^\(${pattern}\)${name} - /\1/" "$file" done done ---------------------------------------- This misses several files that are out of sync with the comment block header. Those will be addressed separately and manually. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
2024-05-08ipa: rkisp1: Remove bespoke Agc functionsDaniel Scally
Now that the rkisp1 Agc algorithm is a derivation of MeanLuminanceAgc we can remove the bespoke functions from the IPA's class. Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2024-05-08ipa: rkisp1: Derive rkisp1::algorithms::Agc from AgcMeanLuminanceDaniel Scally
Now that we have a AgcMeanLuminance class that centralises our AEGC algorithm, derive the RkISP1's Agc class from it and plumb in the necessary framework to enable it to be used. For simplicities sake this commit switches the algorithm to use the derived class, but does not remove the bespoke functions at this time. Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2024-02-23ipa: rkisp1: Fix histogram weights configurationLaurent Pinchart
The histogram weights are initialized to hardcoded 1's for each histogram grid cell. The code uses the wrong variable for the grid size, resulting in some weights having a 0 value. Fix it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com>
2024-02-23ipa: rkisp1: Store hardware parameters in IPA contextLaurent Pinchart
Versions of the ISP differ in the processing blocks they include, as well as in the implementation of some of those blocks. In particular, they have different numbers of histogram bins oe AE statistics cells. The algorithms take these differences into account by checking the ISP version reported by the driver. These checks are currently scattered in multiple places. Centralize them in the IPARkISP1::init() function, and store the version-dependent hardware parameters in the IPA context, accessible by all algorithms. While at it, drop the IPASessionConfiguration::hw member that stores the revision number, unused by the algorithms. It can be added back laer to the IPAHwSettings structure if needed. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com>
2024-02-23ipa: rkisp1: agc: Wrap variable length C arrays in spansLaurent Pinchart
The RkISP1 statistics structure contains multiple arrays whose length varies depending on the hardware revision. Accessing those arrays is error-prone, wrap them in spans at the top level to reduce risks of out-of-bound accesses. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com>
2023-06-06ipa: rkisp1: agc: Restore minimum analogue gain limitJacopo Mondi
Commit a3178dd0391f ("ipa: rkisp1: agc: drop hard-coded analogue gain range") removed both minimum and maximum limits for the analogue gain value. However, as some sensors can potentially have a minimum gain lower than 1.0, restore the check for the minimum limit. Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2023-05-19ipa: rkisp1: agc: drop hard-coded analogue gain rangeBenjamin Bara
As the sensor's analogue gain range is known (read-out in IPARkISP1::configure()), drop the limiting hard-coded range. This enables better performance in low-light conditions for sensors with a higher gain (e.g. the imx327). Signed-off-by: Benjamin Bara <benjamin.bara@skidata.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2023-01-25ipa: rkisp1: Raise maximum analogue gainMikhail Rudenko
Omnivision OV4689 sensor driver exposes maximum analogue gain of 16x. Raise kMaxAnalogueGain to 16.0, so that the full gain range can be used. Signed-off-by: Mikhail Rudenko <mike.rudenko@gmail.com> Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
2022-11-25ipa: rkisp1: agc: Support raw captureLaurent Pinchart
Support raw capture by allowing manual control of the exposure time and analogue gain. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2022-11-25ipa: rkisp1: Add support for manual gain and exposurePaul Elder
Add support for manual gain and exposure in the rkisp1 IPA. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2022-11-09ipa: rkisp1: Move shutter speed and analogue gain limits from agc to sensorLaurent Pinchart
The limits for the shutter speed and analogue gain are stored in IPASessionConfiguration::agc. While they're related to the AGC, they are properties of the sensor, and are stored in the session configuration by the IPA module, not the AGC algorithm. Move them to the IPASessionConfiguration::sensor structure where they belong. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2022-11-09ipa: Sort algorithm operations based on calling orderLaurent Pinchart
Reorder functions in the base ipa::Algorithm and its derived classes to match the calling order: queueRequest(), prepare() and process(). This makes the code flow easier to read. No functional change intended. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2022-10-24ipa: rkisp1: Fill AGC and AWB metadataLaurent Pinchart
Fill the frame metadata in the AGC and AWB algorithm's prepare() function. Additional metadata for other algorithms will be addressed later. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2022-10-24ipa: Pass metadata to Algorithm::process() functionLaurent Pinchart
Extend the Algorithm::process() function with a metadata control list, to be filled by individual algorithms with frame metadata. Update the rkisp1 and ipu3 IPA modules accordingly, and drop the dead code in the IPARkISP1::prepareMetadata() function while at it. This only creates the infrastructure, filling metadata in individual algorithms will be handled separately. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2022-09-28ipa: rkisp1: agc: Store per-frame information in frame contextLaurent Pinchart
Rework the algorithm's usage of the active state to store the value of controls for the last queued request in the queueRequest() function, and store a copy of the values in the corresponding frame context. The frame context is used in the prepare() function to populate the ISP parameters with values corresponding to the right frame. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2022-09-28ipa: rkisp1: Use frame number passed to Algorithm::prepare()Laurent Pinchart
Now that the Algorithm::prepare() function takes a frame number, we can use it to replace the IPAActiveState::frameCount member. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2022-09-28ipa: rkisp1: Rename frameContext to activeStateKieran Bingham
The RkISP1 IPA module creates a single instance of its IPAFrameContext structure, effectively using it more as an active state than a per-frame context. To prepare for the introduction of a real per-frame context, move all the members of the IPAFrameContext structure to a new IPAActiveState structure. The IPAFrameContext becomes effectively unused at runtime, and will be populated back with per-frame data after converting the RkISP1 IPA module to using a frame context queue. The IPAActiveState structure will slowly morph into a different entity as individual algorithm get later ported to the frame context API. While at it, fix a typo in the documentation of the Agc::computeExposure() function that incorrectly refers to the frame context instead of the global context. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2022-09-28ipa: libipa: algorithm: process(): Pass frame numberKieran Bingham
Pass the frame number of the current frame being processed. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2022-09-28ipa: libipa: algorithm: prepare(): Pass frame and frame ContextKieran Bingham
Pass the current frame number, and the current FrameContext for calls to prepare. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2022-09-27ipa: libipa: Pass a reference instead of pointer to Algorithm::process()Laurent Pinchart
Frame contexts will become the core component of IPA modules, always available to functions of the algorithms. To indicate and prepare for this, turn the frame context pointer passed to Algorithm::process() into a reference. The RkISP1 IPA module doesn't use frame contexts yet, so pass a dummy context for now. While at it, drop an unneeded [[maybe_unused]] from Agc::process() and add a missing parameter documentation for the frameContext argument to Awb::process(). Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2022-06-29ipa: rkisp1: Register algorithmsLaurent Pinchart
To prepare for dynamic instantiation of algorithms from the tuning file, register the algorithms with the Module class. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2022-05-18ipa: libipa: Add frame context pointer in process()Umang Jain
Currently we have a single structure of IPAFrameContext but subsequently, we shall have a ring buffer (or similar) container to keep IPAFrameContext structures for each frame. It would be a hassle to query out the frame context required for process() (since they will reside in a ring buffer) by the IPA for each process. Hence, prepare the process() libipa template to accept a particular IPAFrameContext early on. As for this patch, we shall pass in the pointer as nullptr, so that the changes compile and keep working as-is. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2022-03-28ipa: rkisp1: agc: Add a histogram-based gainJean-Michel Hautbois
As for the IPU3, we can estimate the histogram of the luminance. The RkISP1 can estimate multiple ones, the R, G and B ones, the Y only one and a combination of RGB. The one we are interested by in AGC is the Y histogram. Use the hardware revision to determine the number of bins of the produced histogram. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Tested-by: Peter Griffin <peter.griffin@linaro.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-12-07libcamera: Use utils::abs_diff()Laurent Pinchart
Use the new utils::abs_diff() function where appropriate to replace manual implementations. While at it fix a header ordering issue in src/libcamera/pipeline/raspberrypi/raspberrypi.cpp. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
2021-12-01ipa: rkisp1: Initialize numCells in constructorJean-Michel Hautbois
The non-static class member "numCells_" is not initialized in the constructor. Fix it. Reported-by: Coverity CID 365801 Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-11-29ipa: rkisp1: agc: Introduce prepare callJean-Michel Hautbois
When a new parameter buffer needs to be queued, we need to specify which algorithm is activated or not in the ISP. Add a simple prepare function in AGC for that, which may later evolve to take the exposure locking into account. For that function to be called, we also need to add the loop on the algorithms in IPARkISP1::queueRequest. We no longer disable the AE algorithm based on the controls::AeEnable, which will be handled in a different manner later. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-11-29ipa: rkisp1: Introduce AGCJean-Michel Hautbois
Now that we have IPAContext and Algorithm, we can implement a simple AGC based on the IPU3 one. It is very similar, except that there is no histogram used for an inter quantile mean. The RkISP1 is returning a 5x5 array (for V10) of luminance means. Estimating the relative luminance is thus a simple mean of all the blocks already calculated by the ISP. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>