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Facilitate easy representations of a MediaPad object by preparing
it as a string and supporting output streams.
A MediaPad will be report in the following style:
'imx283 1-001a'[0]
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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There is no need for the simple pipeline handler to save the media
device. Remove it.
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The handling for the sequence number validation within
V4L2VideoDevice::dequeueBuffer makes use of a std::optional, which can
be used as a boolean in conditional statements. This has the impact in
this use case that it can be mis-read to be interpretting the value for
firstFrame_ which is assigned as the buf.sequence.
Remove this potential for confusion by making it clear that the first
frame handling is only performed when firstFrame_ does not have a value
assigned.
Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
[Kieran: Rework commit message]
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Fix a small typo in the comment regarding the default routing
table configuration.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Report the default sensor black level reported by the datasheet.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Add support for the IMX283 sensor for the VC4 target.
Signed-off-by: will whang <will@willwhang.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Mimic the letterbox behaviour of the Qt viewfinder by rendering the
image centered. This is done by adding a projection matrix to the vertex
shader to scale the rendered rectangle.
Another option would have been to keep using glViewport() (which would
have needed to be moved to paintGL(), as Qt resets the viewport to span
the full widget before calling). Hidpi displays would then need special
handling of the device pixel ratio, which is done automatically by Qt
when it sets the default viewport. Using a projection matrix avoids this
complication.
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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There's no need to call glClearColor() twice before drawing any GL
content. Drop the first call. This doesn't introduce any functional
change.
While at it, pass floats instead of doubles to glClearColor(), as
required by the function.
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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Starting in Qt 6.7.0, vertex buffers and shader programs are unbound
just before calling QOpenGLWidget::paintGL(). This breaks rendering in
the GL viewfinder in two ways.
First, we bind the vertex buffer only once at initialization time. There
is therefore no vertex buffer mapped at rendering time, preventing both
the vertex shader from having access to the vertex and texture
coordinates.
Then, we bind the shader program only when rendering the first frame.
There is thus no shader program bound for all subsequent frames,
breaking rendering.
Fix this by binding the vertex buffer where needed, when setting
attribute buffers for the shader program, and binding the shader program
for every frame.
As we use a single vertex buffer, we could bind it at the beginning of
paintGL() and keep it bound indefinitely. That would however fail to
clearly indicate in the source code where the vertex buffer is needed,
making the code more difficult to understand as it would rely on
implicit assumptions. Release the vertex buffer explicitly when we don't
need it anymore to avoid this.
While at it, fix a coding style violation by adding missing curly
brackets.
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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When the widget's aspect ratio doesn't match the camera aspect ratio,
the viewfinder is rendered letter-boxed. The side rectangles are not
painted by the viewfinder, and Qt thus renders the parent widget
background to fill that space.
To make it black, we have two options:
- The simplest option is to set the widget's autoFillBackground property
to true. This causes Qt to paint the whole widget with its background
colour before calling paintEvent(). As the camera image typically
covers most (if not all) of the viewfinder widget, this is less
efficient.
- The more complicated option is to paint the letterbox rectangles
manually. We can additionally set the widget's WA_OpaquePaintEvent
attribute to instruct Qt to skip painting the parent widget. This
reduces CPU usage by about 1% (and may reduce GPU usage as well).
Note that the WA_OpaquePaintEvent attribute has to be disabled when we
render the stopped icon, as the icon has a transparent background.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The Qt version checks to support different minor Qt5 versions are not
needed anymore, now that we switched to Qt6. Drop them.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Neal Gompa <neal@gompa.dev>
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On phone screens the default width is too wide, so the OK button cannot
be clicked.
Fix this by decreasing the minimum size of the dialog so it fits nicely.
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The V4L2 adaptation layer can already support streaming with components
such as OpenCV, however it is not accepting, or handling any requests to
configure the frame rate.
In V4L2 the frame rate is set by configuring the timeperframe component
of the v4l2_streamparm structure through the VIDIOC_S_PARM ioctl.
Extend the V4L2 compatibility layer to accept the VIDIOC_S_PARM ioctls
and provide an interface for setting controls on the V4L2Camera class to
set the requested rate when starting the camera.
Signed-off-by: Nejc Galof <galof.nejc@gmail.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
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When a user is taking control of exposure and gain, setting them
manually, we set the AGC "stable region" to zero. This means that any
user changes, however small, will be applied, and they won't be
regarded as "too small to bother with".
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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Error handling in the PipelineHandlerRkISP1::start() function is
cumbersome. Simplify it using the utils::ScopeExitActions class.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Xavier Roumegue <xavier.roumegue@oss.nxp.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
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The ScopeExitActions class is a simple object that performs
user-provided actions upon destruction. It is meant to simplify cleanup
tasks in error handling paths.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Xavier Roumegue <xavier.roumegue@oss.nxp.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
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The ipa_interface.h file includes a number of headers that are not
directly used. Remove them, and add them to the source files that
include ipa_interface.h as required.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Milan Zamazal <mzamazal@redhat.com>
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The LSP autoformatter doesn't like some of the current formatting, let's
make it happier. Note that not all of its suggestions were accepted
because readability is preferred and adjusting .clang-format may not be
easy or possible.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Let's add direct includes for classes currently included indirectly,
through other header files.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The includes that are not used can be removed. Additionally, add some
directly used includes not listed.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Use the direct include of V4L2PixelFormat.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Put the inclusion of geometry.h to the right place.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The includes that are not used can be removed. Also, some directly used
includes not listed are added.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The includes that are not used can be removed and there are also
directly used includes not listed. Let's fix both.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The includes that are not used can be removed. And two identified
missing includes (directly used but available only through other
includes) are added.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The LSP autoformatter doesn't like some of the current formatting, let's
make it happier. Note that not all of its suggestions were accepted
because readability is preferred and adjusting .clang-format may not be
easy or possible.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The includes that are not used can be removed.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The LSP autoformatter doesn't like some of the current formatting, let's
make it happier. Note that not all of its suggestions were accepted
because readability is preferred and adjusting .clang-format may not be
easy or possible.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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v4l2_videodevice.h is not used but logging is imported through it.
Remove the unused include and include log.h instead.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The includes that are not used can be removed.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The uvcvideo pipeline handler always keeps the uvcvideo /dev/video# node
for a pipeline open after enumerating the camera.
This is a problem for uvcvideo, as keeping the /dev/video# node open
stops the underlying USB device and the USB bus controller from being
able to enter runtime-suspend causing significant unnecessary
power-usage.
Implement acquireDevice() + releaseDevice(), openening /dev/video# on
acquire and closing it on release to fix this.
And make validate do a local video_->open() + close() around validate()
when not open yet, to keep validate() working on unacquired cameras.
Bug: https://bugs.libcamera.org/show_bug.cgi?id=168
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The uvcvideo driver needs to open / close its /dev/video# node from
pipe_->acquireDevices() / pipe_->releaseDevices().
V4L2VideoDevice::open() creates an EventNotifier and this notifier needs
to be created from the CameraManager thread.
Use invokeMethod() for pipe_->acquire() and pipe_->release() so that the
EventNotifiers are created from the CameraManager thread context.
Running pipe_->acquire() and pipe_->release() from the CameraManager
thread context serializes all calls to them. Drop PipelineHandler::lock_
this now is no longer necessary and update the "\context" part of the
documentation for acquire[Device]() and release[Device]() to match.
Note the delayed opening of /dev/video# is a special case because the
kernel uvcvideo driver powers on the USB device as soon as /dev/video#
is opened. This behavior should *not* be copied by other pipeline
handlers.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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libcamera always keeps all /dev/video# and /dev/v4l2_subdev# nodes for a
pipeline open after enumerating the camera.
This is a problem for the uvcvideo pipeline handler. Keeping /dev/video#
open stops the UVC USB device from being able to enter runtime-suspend
causing significant unnecessary power-usage.
Add a stub acquireDevice() function to the PipelineHandler class which
pipeline handlers can override.
The uvcvideo pipeline handler will use this to delay opening /dev/video#
until the device is acquired. This is a special case because the kernel
uvcvideo driver powers on the USB device as soon as /dev/video# is
opened. This behavior should *not* be copied by other pipeline handlers.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Harvey Yang <chenghaoyang@chromium.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Extend the RkISP1 BLC algorithm to use the ISP 'companding' block for
versions of the ISP (such as the one on the i.MX8MP) that lack the
dedicated BLS block but implement BLS as part of the companding block.
As access to the companding block requires the extensible parameters
format, disable BLC when using the legacy parameters format on i.MX8MP
to avoid crashes at runtime with older kernels.
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com>
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Add a compand feature flag to the hardware settings section of the IPA
context, so that we can act accordingly for black level subtraction, and
to pave the way to skipping companding appropriately when support for it
is added.
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com>
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Extend the RkISP1 parameters helper with support for the new companding
blocks.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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Now that the IPA module supports the extensible parameters format,
switch to it when available. If the kernel driver doesn't support the
new format, setFormat() will adjust paramFormat to the legacy format,
which will be passed to the IPA module, preserving backward
compatibility.
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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Use the new ISP parameters abstraction class RkISP1Params to access the
ISP parameters in the IPA algorithms. The class replaces the pointer to
the rkisp1_params_cfg structure passed to the algorithms' prepare()
function, and is used to access individual parameters blocks.
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>
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Individual algorithms of the rkisp1 IPA module access their
corresponding ISP parameters through the top-level structure
rkisp1_params_cfg. This will not work anymore with the new parameters
format. In order to ease the transition to the new format, abstract the
ISP parameters in a new RkISP1Params class that offers the same
interface regardless of the format.
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>
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The ISP parameters buffer currently has a fixed payload size, which is
hardcoded in the pipeline handler. To prepare for support of the
extensible parameters format that has a variable payload size, pass the
size from the IPA module to the pipeline handler explicitly. Keep the
size hardcoded to sizeof(struct rkisp1_params_cfg) for now, this will be
udpated later.
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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The rkisp1 driver supports two formats for the ISP parameters buffer,
the legacy fixed format and the new extensible format. In preparation of
support for the new format, pass the parameters buffer format from the
pipeline handler to the IPA module and store it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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EV = [-2, -1, 0.5, 0, 0.5, 1, 2]
should change to
EV = [-2, -1, -0.5, 0, 0.5, 1, 2]
Signed-off-by: Fang Hui <hui.fang@nxp.com>
Reviewed-by: Harvey Yang <chenghaoyang@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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It is better / more logical to call releaseDevice() before unlocking the
devices. At the moment the only pipeline handler implementing
releaseDevice() is the rpi pipeline handler which releases buffers from
its releaseDevice() implementation.
Releasing buffers before unlocking the media devices is ok to do
and arguably it is better to release the buffers before unlocking.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Harvey Yang <chenghaoyang@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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PipelineHandler::acquire() only locks the media devices when the first
camera is acquired. If a second camera of a pipeline is acquired only
useCount_ is increased and nothing else is done.
When releasing cameras PipelineHandler::release() should only unlock
the media devices when the last camera is released. But the old code
unlocked on every release().
Fix PipelineHandler::release() to only release the media devices when
the last camera is released.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Harvey Yang <chenghaoyang@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The control descriptions from YAML files are extracted to generate
Doxygen documentation blocks for the controls, which are then compiled
to HTML. The extraction script uses the first line of the description
as the Doxygen \brief, and preserves blank lines to keep paragraphs.
The control descriptions in the YAML files have however not all been
written with this in mind. Many description elements are not formatted
as block string scalars, in the first place, so blank lines are lost
when parsing YAML. Furthermore, they often start with a long initial
paragraph, making the \brief description very long.
Improve the documentation formatting by marking all multiline
descriptions as block string scalars, and try to provide a short
one-line first paragraph to be used as a \brief. While at it, reflow the
documentation to the 80 columns limit.
The draft controls are left as-is, as they should evolve to non-draft
controls eventually (and ideally sooner than later).
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Jinja2 templates help separate the logic related to the template from
the generation of the data. The python code becomes much clearer as a
result.
As an added bonus, we can use a single template file for both controls
and properties.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Acked-by: Paul Elder <paul.elder@ideasonboard.com>
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Replace manual extraction of data from YAML with the Control helper
class. This centralizes YAML parsing and avoids manual mistakes.
In order to import the controls module, add the utils/codegen/ directory
to the PYTHONPATH through the Python build environment.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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The ControlEnum and Control helper classes defined in gen-controls.py
are useful for other generator scripts. Move them to a separate file to
make it possible to share them.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
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Jinja2 templates help separate the logic related to the template from
the generation of the data. The python code becomes much clearer as a
result.
As an added bonus, we can use a single template file for both controls
and properties.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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Python scripts run as part of the build process need to take a few
actions specific to the environment in which they operate. One of those
is disabling the Python bytecode cache, to avoid writing .pyc files to
the source tree. This is done manually in the IPC generate.py and
parser.py scripts.
The current implementation is not ideal because it hardcodes in the
scripts information related to the environment in which they operate. As
those scripts are part of libcamera this is more of a theoretical issue
than a practical one. A second issue is that future Python scripts will
need to duplicate similar mechanisms, resulting in a higher maintenance
burden.
Address the issue with a different approach, by creating a meson
environment for the Python scripts, and passing it to the
custom_target() functions. The environment only disables the bytecode
cache for now.
The diffstat shows an increase in code size. This is expected to be
offset by usage of the environment for more Python scripts, as well as
support of more variables in the environment.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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