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A bug in libcxx [0] used by clang version 11.0.2 is prevalent when
building libcamera for Android SDK30. This has been fixed and
integrated upstream with [1].
As a workaround, directly cast libcamera::utils::Duration objects to
std::chrono::duration when dividing.
Alternatives evaluated:
Considered: Enable public inheritance of std::chrono::duration and
override operator/ in the class.
Outcome: Does not fix the original compiler error.
Considered: Enable public inheritance of std::chrono::duration and
override operator/ in the libcamera namespace.
Outcome: new compiler error:
ld.lld: error: duplicate symbol: libcamera::operator/
(libcamera::utils::Duration const&, libcamera::utils::Duration const&)
Considered: Use private inheritance of std::chrono::duration and
re-implement a pass-through version of each std::chrono::duration
operator within libcamera::utils::Duration and use template
metaprogramming to fix the division operator.
Outcome: Testing shows that this would introduce substantial
limitations, i.e. requring the Duration object to be on the LHS of any
arithmetic operation with other numeric types. This also substantially
increases implementation complexity.
Considered: Extract double values from libcamera::utils::Duration
objects and use those to divide.
Outcome: This creates substantial readability and unit-safety issues.
[0] https://github.com/llvm/llvm-project/issues/40475
[1] https://github.com/llvm/llvm-project/commit/efa6d803c624f9251d0ab7881122501bb9d27368
Bug: https://bugs.libcamera.org/show_bug.cgi?id=156
Signed-off-by: Nicholas Roth <nicholas@rothemail.net>
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From: https://github.com/makohoek/aosp-vndk-meson
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
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VNDK provides a pre-built version of boringssl. Override the libcrypto
dependency to use the pre-built version from VNDK.
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
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Parametrize the path to the prebuilt shared libraries and to the inclusion
path to support both x86_64 and aarch64.
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
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Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
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Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
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This reverts commit 071c58b051320c98c3c667640864f89c0f1979a7.
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
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Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
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Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
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Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
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Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
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Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
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gralloc.h is a very old API that has been deprecated at least since
Android P (9).
Switch over to a higher level abstraction of gralloc from libui, which
is compatible with Android 11 and up.
Libui:
* is provided in the VNDK (so it's available to vendors).
* is also used in the camera vts test named VtsAidlHalCameraProvider_TargetTest.
Notes:
* GraphicsBufferAllocator being a Singleton, buffer lifecycle
management is easier.
* The imported headers from Android generate the -Wextra-semi warning.
To avoid patching the files, a pragma has been added before inclusion.
* libdl was used for dlclosing() the legacy hal, so the dep has been dropped
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
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The VNDK, which is included as a subproject can provide libhardware.
Remove the stub and use the VNDK instead.
This reverts commit b9ecd85ed1fee2e9d715368b24592ad3009131d8.
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
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The Android HAL has quite some Android-specific dependencies (such as
libhardware) which are not part of regular linux distributions.
To compile-test the HAL on a Linux x86 system, we have added some stubs.
This means that each time we add a new Android specific dependency, we need to
write an associated stub for it, which can get tricky, especially for complex
C++ classes such as GraphicBufferAllocator.
It would be easier if we could import the includes and the required libraries we
need from Android so that we can build-test the HAL.
The Vendor Native Development Kit (VNDK) provides all the libraries
that a vendor service (such as the libcamera HAL) can link against.
Add the VNDK as a subproject of libcamera and add the necessary meson bits so
that we can compile test the Android HAL on linux without having to stub
anything.
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
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When building with custom STLs [1], meson will pass -nostdlib++ to the compiler,
which will conflict with the -stdlib=libc++ flag:
clang-17: error: argument unused during compilation: '-stdlib=libc++' [-Werror,-Wunused-command-line-argument]
Test the user requested a custom cpp_stlib and only configure libc++ when needed.
[1] https://mesonbuild.com/Cross-compilation.html#using-a-custom-standard-library
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
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This header has been transformed into a symlink in the Android tree in
2017 [1].
It's heavily out of date and conflicts the VNDK provided log.h header.
Since it's unused, we can drop it here.
Tested with:
meson setup -Dandroid=enabled -Dandroid_platform=generic -Dpipelines=simple build
meson compile -C buildd
[1] https://android-review.googlesource.com/c/platform/system/core/+/316957
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
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gralloc.h is a very old API that has been deprecated at least since
Android P (9).
Devices are encouraged to switch over to HIDL interface named
android.hardware.graphics.allocator@<VERSION>, where <VERSION> can be
2.0 ,3.0 or 4.0.
This is mandatory since Android Q (10) [1]
Fortunately, Android provides an abstraction on top of
android.hardware.graphics.allocator which is compatible with each
version.
This abstraction is implemented in libui, which is available in the
VNDK.
Import all necessary headers from AOSP and switch over the
generic_frame_buffer_allocator to use GraphicBufferAllocator.
This series has been build-tested on a linux host and functionally
tested on an AM62x SK EVM with Android 13. (preview and capture).
[1] https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/main/compatibility_matrices/compatibility_matrix.4.xml#195
To: libcamera-devel@lists.libcamera.org
Cc: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Cc: Guillaume La Roque <glaroque@baylibre.com>
Cc: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
---
Changes in v4:
- EDITME: describe what is new in this series revision.
- EDITME: use bulletpoints and terse descriptions.
- Link to v3: https://lore.kernel.org/r/20230923-gralloc-api-v4-v3-0-9a9e039284ba@baylibre.com
Changes in v3:
- Fixed patch 3 missing whitespace (Jacopo)
- Added libui meson import build in patch 3 (more consistent) (Jacopo)
- Removed member reference to GraphicBufferAllocator in patch 4 (Jacopo)
- Link to v2: https://lists.libcamera.org/pipermail/libcamera-devel/2023-September/038942.html
Changes in v2:
- Dropped additional ; in graphic_buffer_allocator_stub.cpp. (Kieran)
- Surrounded problematic includes with #pragma to avoid clang compile
errors related to -Wextra-semi. (Kieran)
- Link to v1: https://lists.libcamera.org/pipermail/libcamera-devel/2023-September/038927.html
Tested on linux with:
CC=clang CXX=clang++ meson setup build -Dandroid=enabled -Dandroid_platform=generic
ninja -C build
And clang version clang++ (clang 16.0.6 "clang version 16.0.6 (Fedora 16.0.6-2.fc38)")
--- b4-submit-tracking ---
# This section is used internally by b4 prep for tracking purposes.
{
"series": {
"revision": 4,
"change-id": "20230824-gralloc-api-v4-e3388fd364c6",
"base-branch": "master",
"prefixes": [],
"history": {
"v1": [
"20230912-gralloc-api-v4-v1-0-0f80402d8e7a@baylibre.com"
],
"v2": [
"20230912-gralloc-api-v4-v2-0-e859da63f98c@baylibre.com"
],
"v3": [
"20230923-gralloc-api-v4-v3-0-9a9e039284ba@baylibre.com"
]
}
}
}
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Use the compiler.get_define() function to get the value of
_FORTIFY_SOURCE instead of iterating over the cpp_args. This simplies
the code, but also guarantees to return the actual value of
_FORTIFY_SOURCE, even if defined through other means than through the
meson cpp_args.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: George Burgess IV <gbiv@google.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
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The Android CameraDevice class adds a sourceStream for each Mapped
stream requested by the framework.
When mapping multiple framework streams to the same sourceStream, the
implementation of CameraDevice::processCaptureRequest wrongly erases the
just added sourceStream from the list of streams to request to
libcamera.
Fix this by adding the stream instead of erasing it.
Fixes: 7ea83eba0df6 ("android: camera_device: Postpone mapped streams handling")
Signed-off-by: Harvey Yang <chenghaoyang@chromium.org>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
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ChromeOS is moving to a platform default of `_FORTIFY_SOURCE=3`, and
this definition conflicts with that:
<command line>:4:9: error: '_FORTIFY_SOURCE' macro redefined
[-Werror,-Wmacro-redefined]
Rather than adding logic to keep up with their local configuration, it
seems best to leave setting _FORTIFY_SOURCE on ChromeOS up to ChromeOS.
Signed-off-by: George Burgess IV <gbiv@google.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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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>
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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>
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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>
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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>
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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>
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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>
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Usage of pip3 to install meson may result in a different meson version
available for the local user and for root. This causes issues when
running `meson install` (directly or through `ninja install`):
Installing to a system location will request elevated privileges and use
the system meson version to install files, which may fail to unpickle
data pickled with the meson version for the local user.
As all major distributions now provide a recent-enough version of meson,
usage of pip3 is not longer needed in most cases, and shouldn't be
recommended. Drop it.
While at it, update the version of meson listed in the documentation to
match the required version.
Bug: https://bugs.libcamera.org/show_bug.cgi?id=199
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
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StatisticsPtr is a shared pointer, so the use of std::make_unique to
create it was a bit confusing. Use std::make_shared instead.
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>
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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>
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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>
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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>
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Replace the buffer id generation in RPi::Stream with a simple integer
counter since ids don't get recycled any more.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Since we don't distinguish between externally and internally allocated
dma bufs, rename this function to setExportedBuffer() to clearer on its
function.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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There is no need to distinguish between dma bufs allocated outside of
libcamera and internally allocated buffers. As such, remove all the
special case handling of such buffers.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Hardcode the maximum number of buffers imported to the V4L2 video device
to 32. This only has a minor disadvantage of over-allocating cache slots
and V4L2 buffer indexes, but does allow more headroom for using dma
buffers allocated from outside of libcamera.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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For compressed formats, v4l2_pix_format.bytesperline value will be zero
and is documented similarly in the kernel. Since we set the stride to
v4l2_pix_format.bytesperline, document the case where it is expected
to be zero (i.e. if the format is compressed).
Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The imx290 produces a single unusable frame on startup and mode switch.
This is signalled to the IPA in the mode switch case, but not the
startup case. Fix this.
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: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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`SortIncludes: true` was added in both commit ae05b9f9d082
("clang-format: Enable sorted includes") and commit 0e1ff86e78ae
("clang-format: Regroup sort orders"), which caused issues to run
clang-format.
Fixes: 0e1ff86e78ae ("clang-format: Regroup sort orders")
Signed-off-by: Harvey Yang <chenghaoyang@chromium.org>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Sphinx 7.0.0 has dropped support for the deprecated 'style' variable
(https://github.com/sphinx-doc/sphinx/pull/11381). This breaks
compilation of the documentation:
/usr/bin/sphinx-build -D release=v0.1.0+16-eed6a079 -q -W -b html Documentation Documentation/html
Theme error:
An error happened in rendering the page api-html/index.
Reason: UndefinedError("'style' is undefined")
The recommended replacement is 'styles[-1]'. However, this resolves to
'_static/css/theme.css', which is part of the 'css_styles' variable, and
results in the stylesheet being included twice. To avoid that and fix
the compilation error, simply drop the first reference.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Don't make an unnecessary call to toV4L2DeviceFormat() from validate()
to get a V4L2DeviceFormat. Instead, the conversion can happen directly
from the RAW stream PixelFormat.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
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The meson find_library() function takes a library name without the "lib"
prefix. Its usage to find lic++ is thus not correct, and meson warns
about it:
WARNING: find_library('libc++') starting in "lib" only works by accident and is not portable
Fix it by dropping the "lib" prefix.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The Amendment class calls `git show` twice, once to extract the commit
title, and a second time to extract the trailers. This can be combined
in a single command, which is more efficient. Do so.
While at it, centralize initialization of self._trailers in the
Commit.__init__() function.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Increase the maximum list size to 2000 elements. This allows, for
example, larger lens shading config structures to be parsed correctly
without throwing any errors.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The FocusFom metadata was no longer being reported back because the
"focus.status" metadata was never being created.
Additionally, the scaling of the focus FoMs was over-zealous, rounding
just about everything down to zero.
Fixes: ac7511dc4c59 ("ipa: raspberrypi: Generalise the focus reporting code")
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Altered the way that some lines are laid out, made functions
more attractive to look at, and tidied up messy areas.
Signed-off-by: Ben Benson <ben.benson@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
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Altered the color matrices for the tuning files for various
cameras in order to make them more color accurate.
Signed-off-by: Ben Benson <ben.benson@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
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Added code which optimises the color matrices based off
delta E values for the calibration images. Working in LAB
color space.
Signed-off-by: Ben Benson <ben.benson@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
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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>
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Flicker is the term used to describe brightness banding or oscillation
of images caused typically by artificial lighting driven by a 50 or
60Hz mains supply. We add three controls intended to be used by
AEC/AGC algorithms:
AeFlickerMode to enable flicker avoidance.
AeFlickerPeriod to set the flicker period "manually".
AeFlickerDetected to report any flicker that is currently detected.
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>
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