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2022-03-17libipa: Add CameraSensorHelper for OV2740Daniel Scally
The datasheet for the OV2740 gives 0x80 as 1x gain, so real gain is GainCode / 128. Signed-off-by: Daniel Scally <djrscally@gmail.com> Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2022-03-15ipa: ipu3: Send lens controls to pipeline handlerDaniel Scally
Pick up the focus value from the AF algorithm and send lens controls along in the frame context. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Daniel Scally <djrscally@gmail.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2022-03-15libcamera: ipa: Rename ctrls_ memberDaniel Scally
Now that we have added lens controls, rename the existiing member of the class to clarify that it relates to the sensor's controls. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Daniel Scally <djrscally@gmail.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2022-03-15libcamera: ipa: Add lens control member to ipu3 ipa interfaceDaniel Scally
Add further members to the ipu3 ipa interface that will hold lens controls passed in by configInfo Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Daniel Scally <djrscally@gmail.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2022-03-15ipa: ipu3: af: Auto focus for dw9719 Surface Go2 VCMKate Hsuan
Since VCM for surface Go 2 (dw9719) had been successfully driven, this Af module can be used to control the VCM and determine the focus value based on the IPU3 AF state. Based on the values from the IPU3 AF buffer, the variance of each focus step is determined and a greedy approach is used to find the maximum variance of the AF state and an appropriate focus value. The grid configuration is implemented as a context. Also, the grid parameter- AF_MIN_BLOCK_WIDTH is set to 4 (default is 3) since if the default value is used, x_start (x_start > 640) will be at an incorrect location of the image (rightmost of the sensor). Signed-off-by: Kate Hsuan <hpa@redhat.com> Tested-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> 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>
2022-03-11ipa: ipu3: awb: Clamp gain valuesJean-Michel Hautbois
The gain values are coded as u3.13 fixed point values, ie they can not be more than 8. Clamp the values in order to avoid any off limits value which could make the IPU3 behave in a weird manner. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
2022-03-11ipa: ipu3: agc: Introduce lineDuration in IPASessionConfigurationJean-Michel Hautbois
Instead of having a local cached value for line duration, store it in the IPASessionConfiguration::sensor structure. While at it, configure the default analogue gain and shutter speed to controlled fixed values. The latter is set to be 10ms as it will in most cases be close to the one needed, making the AGC faster to converge. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
2022-03-11ipa: ipu3: Shorten exposure and gain linesJean-Michel Hautbois
When the effective sensor values are stored during the EventStatReady event, the lines are long. Fix it. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
2022-03-11ipa: ipu3: Return filtered valueJean-Michel Hautbois
When the current exposure value is calculated, it is cached and used by filterExposure(). Use private filteredExposure_ and pass currentExposure as a parameter. In order to limit the use of filteredExposure_, return the value from filterExposure(). While at it, remove a stale comment. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
2022-02-10ipa: raspberrypi: Reduce the controller rate to 30fpsNaushir Patuck
With the controller algorithms running at 60fps, there are some dropped frames when running at very high famerates. Reducing this to 30fps eliminates all these drops without any noticeable changes to the image quality. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: David Plowman <david.plowman@raspberrypi.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-02-08ipa: raspberrypi: awb: Better handling of how we disable AWBDavid Plowman
We now handle disabling ("pausing") AWB in the same way as AEC/AGC. Instead of letting the pause flag be set so that the code never runs at all, we instead fix the manual settings to the current values (but continue to be called). The algorithm does not restart any calculations in this state, but continues to add AWB metadata to every frame. Therefore certain other algorithms that want to know it (CCM and ALSC, for example) can still find it. Signed-off-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-02-03ipa: raspberrypi: config: Increase the max gain in the exposure profilesNaushir Patuck
Increase the maximum allowable gain from 6.0 to 8.0 in the normal and short exposure profiles for all camera sensors. Increase this limit to 12.0 for the long exposure profiles for sensors where this has been defined. The 6.0x value was somewhat arbitrarily chosen, and does limit the total exposure in dark conditions. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-02-03ipa: raspberrypi: Limit the maximum sensor gain usedNaushir Patuck
Limit the gain code to the maximum value reported by the sensor controls when sending to DelayedControls. The AGC algorithm will handle a lower gain used by the sensor, provided it knows the actual gain used. This change ensures that DelayedControls will never report an unclipped gain used. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-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>
2021-12-04libcamera: base: shared_fd: Rename fd() to get()Laurent Pinchart
For consistency with UniqueFD, rename the fd() function to get(). Renaming UniqueFD::get() to fd() would have been another option, but was rejected to keep as close as possible to the std::shared_ptr<> and std::unique_ptr<> APIs. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
2021-12-04libcamera: base: Rename FileDescriptor to SharedFDLaurent Pinchart
Now that we have a UniqueFD class, the name FileDescriptor is ambiguous. Rename it to SharedFD. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2021-12-03libcamera: Move file_descriptor.h to base/Laurent Pinchart
The FileDescriptor class is a generic helper that matches the criteria for the base library. Move it there. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
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>
2021-11-30ipa: ipu3: Rectify gain value reporting in request metadataUmang Jain
Report value of sensor's gain pertaining to the current request completion, as that is the gain value the request completed with. The Agc algorithm processes the gain value for incoming next request hence it should not be reported in request's metadata. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-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>
2021-11-29ipa: rkisp1: agc: Introduce HW revision in IPAContextJean-Michel Hautbois
The ISP can use 25 or 81 cells depending on its revision. Remove the cached value in IPARkISP1 and use IPASessionConfiguration to store it and pass it to AGC 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: Report and use sensor controlsJean-Michel Hautbois
The pipeline handler populates a new sensorControls ControlList, to have the effective exposure and gain values for the current frame. This is done when a statistics buffer is received. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-11-29ipa: rkisp1: Use the Algorithm classJean-Michel Hautbois
Now that libipa offers a templated class for Algorithm, use it in RkISP1. 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: libipa: Introduce Algorithm class templateJean-Michel Hautbois
The algorithms are using the same function names with specialized parameters. Instead of duplicating code, introduce a libipa Algorithm class which implements a base class with template parameters in libipa, and use it in each IPA. As we now won't need an algorithm class for each IPA, move the documentation to libipa, and make it agnostic of the IPA used. While at it, fix the IPU3::Algorithm::Awb documentation. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
2021-11-29ipa: rkisp1: Introduce IPAContextJean-Michel Hautbois
Before using any algorithm, we want the IPAContext to be ready for those. Introduce the IPAContext following the existing design from IPA::IPU3. Each algorithm will then introduce the needed fields. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-11-29ipa: rkisp1: Instantiate CameraSensorHelperJean-Michel Hautbois
When the AGC will run, it will use analogue gains as double values. We will need those values to be converted to apply the control. Introduce CameraSensorHelper and call it at init(). Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-11-29ipa: Do not modify the sensor limitsJean-Michel Hautbois
The driver is responsible for setting the proper limits for its controls. The IMX219 has an analogue gain of 1.0 when the gain code is set to 0, therefore we can not clamp to a minimum gain code of 1. Rework this for both IPU3 and RkISP1, for both Exposure and Gain controls. 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: Pass IPASettings at init callJean-Michel Hautbois
When the IPA is initialized, it will need to know the sensor model used in order to properly call CameraSensorHelper for the analogue gain. Modify the init definition in the pipeline handler and in the IPA as well as the mojo interface to pass the IPASettings. 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>
2021-11-29libipa: Correct IMX219 in CameraSensorHelperJean-Michel Hautbois
The equation is badly reported in the CameraSensorHelper, as m1 and c0 are inverted. Correct it to have a proper gain calculation. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-11-25ipa: raspberrypi: Update documentation urlsNaushir Patuck
Update the urls in the README file for building/running libcamera on the Raspberry Pi platforms. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-11-24ipa: libipa: Convert to pragma onceKieran Bingham
Remove the verbose #ifndef/#define/#endif pattern for maintaining header idempotency, and replace it with a simple #pragma once. This simplifies the headers, and prevents redundant changes when header files get moved. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
2021-11-24ipa: ipu3: Convert to pragma onceKieran Bingham
Remove the verbose #ifndef/#define/#endif pattern for maintaining header idempotency, and replace it with a simple #pragma once. This simplifies the headers, and prevents redundant changes when header files get moved. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
2021-11-23ipa: ipu3: Fix IPAContext documentationJean-Michel Hautbois
The shutter speed limits and analogue gains limits are in the agc structure in IPASessionConfiguration. They are badly mentioned as being part of the grid structure, fix it. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-11-23ipa: ipu3: agc: Saturate the averages when computing relative luminanceLaurent Pinchart
The relative luminance is calculated using an iterative process to account for saturation in the sensor, as multiplying pixels by a gain doesn't increase the relative luminance by the same factor if some regions are saturated. Relative luminance estimation doesn't apply a saturation, which produces a value that doesn't match what the sensor will output, and defeats the point of the iterative process. Fix it. Fixes: f8f07f9468c6 ("ipa: ipu3: agc: Improve gain calculation") Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Tested-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Tested-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-11-23ipa: ipu3: agc: Return the inter-quantile mean from measureBrightness()Laurent Pinchart
The inter-quantile mean is a value that is computed as part of the AGC run. It doesn't need to be stored in a member variable. Return it from measureBrightness(), which makes the flow of data easier to follow. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-11-23ipa: ipu3: agc: Rename currentYGainLaurent Pinchart
The "current" prefix in the currentYGain variable name is confusing: - In Agc::estimateLuminance(), the variable contains the gain to be applied to the image, which is neither a "current" gain nor a "Y" gain. Rename it to "gain". - In Agc::computeExposure(), the variable contains the gain computed by the relative luminance method, so rename it to "yGain". While at it, rename variables to match the libcamera coding style. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-11-23ipa: ipu3: agc: Standardize vocabulary on "relative luminance"Laurent Pinchart
The AGC computes the average relative luminance of the frame and calls the value "normalized luma", "brightness" or "initialY". The latter is the most accurate term, as the relative luminance is abbreviated Y, but the "initial" prefix isn't accurate. Standardize the vocabulary on "relative luminance" in code and comments, abbreviating it to Y when needed. While at it, rename variables to match the libcamera coding style. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-11-23ipa: ipu3: agc: Drop kMaxLuminance constantLaurent Pinchart
The kMaxLuminance constant is badly named, it's not a maximum luminance, but the maximum integer value output by the AWB statistics engine for per-channel averages. The constant is used in a single place, hardcoding the value is actually more readable. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-11-16ipa: ipu3: agc: Remove the threshold for the histogram calculationJean-Michel Hautbois
Until commit f8f07f9468c6 (ipa: ipu3: agc: Improve gain calculation) the gain to apply on the exposure value was only using the histogram. Now that the global brightness of the frame is estimated too, we don't need to remove part of the saturated pixels from the equation anymore. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Tested-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-11-15ipa: ipu3: Set the AnalogueGain controlJean-Michel Hautbois
We can report the controls::AnalogueGain metadata now that AGC is updating it correctly. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2021-11-15ipa: ipu3: Move ExposureTime to IPAJean-Michel Hautbois
Now that we have the exposure time calculated, report it in the controls::ExposureTime and don't use the pipeline handler for it anymore. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2021-11-15ipa: ipu3: Cache line duration at configure callJean-Michel Hautbois
We use the line duration several times in the IPAIPU3. Instead of recalculating it each time, cache the value as a utils::Duration. ExposureTime and FrameDuration units are in micro-seconds, cast the Duration accordingly. As sensorInfo is no longer used in updateSessionConfiguration remove the reference to it. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2021-11-15ipa: ipu3: Send color temperature in the metadataJean-Michel Hautbois
Now that the color temperature is updated per-frame, use the value and set the corresponding controls::ColourTemperature. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2021-11-15ipa: ipu3: awb: Add support for color temperatureJean-Michel Hautbois
The AWB estimates the color temperature, but it is not used at all. It can be useful for debug purpose at least, but also for lux estimation later, to be able to know the temperature estimated for a given frame. Add a new member to the IPAFrameContext::awb for this purpose, and update the value in AWB. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2021-11-15ipa: ipu3: agc: Store exposure in units of timeJean-Michel Hautbois
The minimum and maximum exposure are stored in lines. Replace it by values in time to simplify the calculations. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2021-11-15ipa: ipu3: agc: Update previous exposure valueJean-Michel Hautbois
Previously, the exposure value was calculated based on the estimated shutter time and gain applied. Now that we have the real values for the current frame, use those before estimating the next one and rename the variable accordingly. As the exposure value is updated in the beginning of the computation, there is no need to initialize effectiveExposureValue anymore in the configure call, and it can be a local variable and not a class variable anymore. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2021-11-15ipa: ipu3: agc: Improve gain calculationJean-Michel Hautbois
When an image is partially saturated, its brightness is not increasing linearly when the shutter time or gain increases. It is a big issue with a backlight as the algorithm is fading to darkness right now. Introduce a function to estimate the brightness of the frame, based on the current exposure/gain and loop on it several times to estimate it again and approach the non linear function. Inspired-by: 7de5506c30b3 ("libcamera: src: ipa: raspberrypi: agc: Improve gain update calculation for partly saturated images") Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
2021-11-15ipa: ipu3: agc: Refactor ev gain calculation and testingJean-Michel Hautbois
When we compute the new gain, we use the iqMean_ and estimate an exposure value gain to apply. Return early when the gain is less than 1%. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2021-11-15ipa: ipu3: agc: Compute the gain for each frameJean-Michel Hautbois
Now that we have the real exposure applied at each frame, remove the early return based on a frame counter and compute the gain for each frame. Introduce a number of startup frames during which the filter speed is 1.0, meaning we apply instantly the exposure value calculated and not a slower filtered one. This is used to have a faster convergence, and those frames may be dropped in a future development to hide the convergance process from the viewer. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>