We need to be able to do things like enable/disable AGC for all the
channels, so most of the AGC controls are updated to be applied to all
channels. There are a couple of exceptions, such as setting explicit
shutter/gain values, which apply only to channel 0.
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
AWB writes this out during prepare, so we may as well read it in AGC
prepare as well. Reading it in process is wrong on the PiSP platform
because process runs before prepare, so the AWB status won't be there
(on vc4 it made no difference).
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Since noise control handling differs between the VC4 and PiSP IPAs,
move the current denoise control handler from ipa base into the vc4 IPA
derived class.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
"Fast desaturation" is a technique that can help the AGC algorithm to
desaturate images more quickly when they are very
over-exposed. However, it uses digital gain to do this which can
confuse our HDR techniques. Therefore make it optional.
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
This was being re-read in order to determine what LSC gains had been
applied. We can just retrieve these numbers from the prevAsyncResults_
instead.
This will also enable other future algorithms to manipulate the LSC
tables in the alsc.status, without it breaking the core ALSC algorithm
here.
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
We can perform some of the local contrast adjustment using global
gains in the LSC table. We can vary the amount of gain according to
the measured brightness of that image region.
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Whenever the AGC active channels are changed, start with the first
channel listed. This allows applications to rely on a particular channel
being generated first. For example, multi-exposure HDR always wants the
short channel first.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
The code was inadvertently overwriting the caller's StatisticsPtr,
meaning that subsequent algorithms would get the wrong image
statistics when AGC channels changed.
This could be fix using std::ref, though I find the C-style pointer
fix easier to understand!
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Some use cases may require stronger, or different, denosie settings to
others. For example, the way frames are accumulated during single
exposure HDR means that we may want stronger denoise.
This commit adds such support for different configurations that can be
defined in the tuning file.
Older tuning files, or files where there is only a single
configuration, load only the "normal" denoise configuration.
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
The enableCe() function enables or disables adaptive contrast
enhancement and the restoreCe() function sets it back to its normal
state (which is what was read from the tuning file).
In future, algorithms like HDR might want to take over tonemapping
functions, so any dynamic behaviour here would upset them.
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Add a small "stable region" parameter (defaulting to 2%) within which
the AGC will not adjust the exposure it requests. It allows
applications to configure the AGC to avoid continual micro-adjustments
of exposure values if they are somehow sensitive to it.
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Add new CAC, HDR, Saturation and Tonemapping algorithms.
Add a new Denoise algorithm that handles spatial/temporal/colour denoise
through one interface. With this change, the old SDN algorithm is now
considered deprecated and a warning message will be displayed if it is
enabled.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Prepare the AWB algorithm to support the PiSP hardware. The key change
is to factor in the LS correction in the AWB zone statistics. This is
different from VC4 where the LS correction happens before statistics
gathering.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Prepare the ALSC algorithm to support the PiSP hardware. The key change
is to avoid factoring out the WB correction in the AWB zone statistics.
Add the ALSC correction to the global metadata so that AWB can use it to
factor the gains back in for the AWB calculations.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Add a new boolean field (statsInline) to Controller::HardwareConfigMap.
This field indicates where the statistics are generated in the hardware
ISP pipeline. For statsInline == true, statistics are generated before
the frame is processed (e.g. the PiSP case), and statsInline == false
indicates statistics are generated after the frame is processed (e.g.
the VC4 case).
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Add the PiSP Frontend and Backend SharedMemObject file descriptors to
the ipa::init() call. This will allow the pipeline handler to pass these
objects to the IPA after construction.
Add a flag to indicate if buffer swaps are needed when starting the
ISP for the stitch block.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Add a virtual IpaBase::platformStart() member function that is called
at the end of IpaBase::start(). For the IpaVc4 derived class, this
function does nothing, but will be used in the PiSP derived class to
reset internal state on startup.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
We avoid skipping the IPAs while frameCount_ is less than
dropFrameCount_, indicating that these frames will not be sent to the
application. This means that when these numbers are equal then this is
the first frame the application will get, so again, we must avoid
skipping the IPAs. Consequently the test here must avoid the case of
equality.
Fixes: 51533fecae ("ipa: rpi: Fix frame count logic when running algorithms")
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
The frame counter test to determine if we run the IPA algorithms has a
logic bug where it treats dropFrameCount_ and mistrustCount_ as frame
numbers, not counts of frames (which it is). The implication is that
startup convergence and initial settings take one extra frame to apply.
Fix this.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Tested-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
If the json file parsing failed due to a malformed file, the root
pointer would be null. This was not tested and caused a segfault when
trying to use the pointer to retrieve the version key.
Fix this by bailing out early if the parser returns a null pointer.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Whenever we run Agc::process(), we store the most recent total
exposure requested for each channel.
With these values we can apply the channel constraints after
time-filtering the requested total exposure, but before working out
how much digital gain is needed.
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
A channel constraint is somewhat similar to the upper/lower bound
constraints that we use elsewhere, but these constraints apply between
multiple AGC channels. For example, it lets you say things like "don't
let the channel 1 total exposure be more than 8x that of channel 0",
and so on. By using both an upper and lower bound constraint, you
could fix one AGC channel always to be a fixed ratio of another.
Also read a vector of them (if present) when loading the tuning file.
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
The switchMode, prepare and process methods are updated to implement
multi-channel AGC correctly:
* switchMode now invokes switchMode on all the channels (whether
active or not).
* prepare must find what channel the current frame is, and run on
behalf of that channel.
* process updates the most recent DeviceStatus and statistics for the
channel of the frame that has just arrived, but generates updated
values working through the active channels in round-robin fashion.
One minor detail in process is that we don't want to change the
DeviceStatus metadata of the current frame, so we now pass this to the
AgcChannel's process method, rather than letting it find the
DeviceStatus in the metadata.
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
This commit does the basic reorganisation of the code in order to
implement multi-channel AGC. The main changes are:
* The previous Agc class (in agc.cpp) has become the AgcChannel class
in (agc_channel.cpp).
* A new Agc class is introduced which is a wrapper round a number of
AgcChannels.
* The basic plumbing from ipa_base.cpp to Agc is updated to include a
channel number. All the existing controls are hardwired to talk
directly to channel 0.
There are a couple of limitations which we expect to apply to
multi-channel AGC. We're not allowing different frame durations to be
applied to the channels, nor are we allowing separate metering
modes. To be fair, supporting these things is not impossible, but
there are reasons why it may be tricky so they remain "TBD" for now.
This patch only includes the basic reorganisation and plumbing. It
does not yet update the important methods (switchMode, prepare and
process) to implement multi-channel AGC properly. This will appear in
a subsequent commit. For now, these functions are hard-coded just to
use channel 0, thereby preserving the existing behaviour.
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Add a new helper function Histogram::interBinMean() that essentially
replaces the existing Histogram::interQuantileMean() logic but working on
bins instead.
Rework the interQuantileMean() to call into interBinMean() with the
appropriate convertion from quatiles to bins.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
The Agc::process() function returns an AgcStatus object in the
metadata as before, but Agc::prepare() is changed to return the values
it computes in a separate AgcPrepareStatus object (under the new tag
"agc.prepare_status").
The "digitalGain" and "locked" fields are moved from AgcStatus to
AgcPrepareStatus.
This will be useful going forward as we can be more flexible about the
order in which prepare() and process() are called, without them
trampling on each other's results.
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
We now time-filter the exposure before sorting out how much digital
gain is required. This is actually a little more natural and
simplifies the code. It also prepares us for some future work where
this arrangement will be helpful.
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrpyi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
prepare() doesn't use the AWB status, so fetching it in process() is
probably better. This change is preparatory to other changes, where we
may find ourselves calling process() without having called prepare()
previously.
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
We handle the flicker modes by passing the correct period to the
AEC/AGC algorithm which already contains the necessary code.
The "Auto" mode, as well as reporting the detected flicker period via
the "AeFlickerDetected" metadata, are unsupported for now.
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
The imx708 must drop a single frame on startup - but only when in HDR
mode. Non-HDR modes do not need to drop frames. Fix the logic in
hideFramesModeSwitch() which currently unconditionally advertises to
drop one frame.
Unfortunately there is no clear way to tell if the sensor is in the HDR
mode. So for now, look the resolution and framerate to deduce this.
Additionally ensure we override hideFramesStartup() and return the same
number as hideFramesModeSwitch().
Bug: https://github.com/raspberrypi/libcamera-apps/issues/524
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
In commit 0ee9339331, a default metering/exposure/constraint mode is
used if a control sets a mode that is not listed in the camera tuning
file.
Setting a default mode may be undesirable in these cases, so instead
keep the agc mode unchanged. This also matches the behaviour for other
IPA controls where no changes are made in error conditions.
Fixes: 0ee9339331 ("ipa: rpi: agc: Gracefully handle missing agc modes")
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
In addition to sensor controls, return lens controls from
IpaBase::configure() back to the pipeline handler. If there are lens
controls present in the ControlList, action them in the pipeline handler
as part of the configure routine.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Commit a3178dd039 ("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>
Do not advertise colour related controls (i.e. [A]WB, colour saturation)
in the ControlInfoMap of available controls returned out to the
application.
Silently ignore these controls in the control handler in case applications
don't use the advertised ControlInfoMap to validate controls.
As a drive-by fix, don't advertise controls::ColourCorrectionMatrix in
the ControlInfoMap as it is not handled by the IPA.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
