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Add a method to the Camera class to retrieve the Camera properties
registered by the pipeline handler.
While at it, reword the Camera::controls() operation documentation to
specify that the camera control information are constant during the
camera lifetime not their value, while the camera properties value are
the actually static information.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Associate to each Camera a ControlList which contains the Camera
properties as created by pipeline handlers in the pipeline handler's
CameraData and provide an operation to retrieve them.
Collect properties from the camera sensor in all pipeline handlers that
support one (IPU3, RKISP1 and VIMC).
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Parse and collect camera sensor properties by inspecting the associated
v4l2 controls.
Augment the CameraSensor class with an operation to retrieve the
collected properties.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Augment the the ControlRange class to store the control default value.
This is particularly relevant for v4l2 controls used to create
Camera properties, which are constructed using immutable video device
properties, whose value won't change at runtime.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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The rotation property describes the rotation of the camera sensor.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Re-use the Control generation infrastructure to generate libcamera properties
and define the first 'Location' property.
Introduce three additional files:
- include/libcamera/property_ids.h
Defines the properties ids
- src/libcamera/property_ids.cpp
Defines the properties Control<> instances
- src/libcamera/property_ids.yaml
Provide the first 'Location' property definition.
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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In preparation to add libcamera Camera properties definitions by re-using
the control generation framework, augment the gen_controls.py script to
support parsing the 'enum' yaml tag and generate documentation and
definition of possible values associated with a Control or a Property
and defined through an enumeration of supported values.
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Add a parameter to the Thread::wait() function to wait with a timeout.
The delay value utils::duration::max() waits forever.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Implement a save image button on the toolbar which will take a current
viewfinder image and present the user with a QFileDialog to allow them
to choose where to save the image.
Utilise the QImageWriter to perform the output task.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Provide Quit, Play, Stop icons.
Create a Qt resource to compile icons into the binary and present them
on the toolbar.
Update the Quit button with a 'cross', and implement Play/Stop buttons.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Provide simple clean icons from https://feathericons.com/
(https://github.com/feathericons/feather)
These are provided under the MIT license.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Implement a quit button, and a list of cameras.
Selecting a different camera from the Toolbar will stop the current
stream, and start streaming the chosen camera device if it can be
acquired.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Intialise a local copy of the CameraManager instance to ease
access to the CameraManager which is frequently utilised.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The MainWindow connects a handler to the Camera requestCompleted signal
when the camera is opened, but never disconnects it.
Move the connection to the startCapture() function, and ensure that it
is disconnected again when the stream is stopped.
This ensures that we can successfully tear down the stream, and restart
with a new camera.
Introducing the error_disconnect cleanup path in start_capture
identified that we left the camera in the start state, thus we also add
a call to camera->stop() when disconnecting the signal connection.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The FrameBufferAllocator must be deleted and reconstructed before performing
any reconfiguration of the stream.
Construct the allocator at startCapture, and destroy it during stopCapture so
that we can successfully stop and restart the stream.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Add control for cropping/selection on a V4L2 video device through
the VIDIOC_S_SELECTION ioctl. This is similar to the existing cropping
control available on V4L2 sub-devices.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.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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Two occasions in the source utilise the Doxygen '\returns' alias for \return.
We use \return everywhere else in the code. Update the two occurences to match.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Replace the custom string splitting implementation with utils::split().
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
[Kieran: Re-fit to master branch]
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Add a utils::split() function that splits a string for the purpose of
iterating over substrings. It returns an object of unspecified type that
can be used in range-based for loops.
Signed-off-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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rkisp1 kernel driver was merged upstream with minor changes in the
topology from the original driver libcamera based it's first support to
rkisp1.
Adapt libcamera pipeline to work with upstream driver.
* Remove subdevice dphy from the pipeline.
* Add resizer in the pipeline.
* Fix links.
* Update entity names.
Signed-off-by: Helen Koike <helen.koike@collabora.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Now that libcamera creates threads internally and doesn't rely on an
application-provided event loop, remove the thread from the Android
Camera HAL layer. The CameraProxy class becomes meaningless, remove it
and communicate directly from the CameraHalManager to the CameraDevice.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Jacopo Mondi <jacopo@jmondi.org>
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Now that libcamera creates threads internally and doesn't rely on an
application-provided event loop, remove the thread from the V4L2
compatibility layer. The split between the V4L2CameraProxy and
V4L2Camera classes is still kept to separate the V4L2 adaptation from
camera operation. This may be further refactored later.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Document the threading model of the PipelineHandler class (and all its
derived classes). The model is already enforced by the Camera class, so
no change in the implementation is required. As for the Camera class,
disconnection is currently left out.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Document the threading model of the Camera class and implement it.
Selected functions become thread-safe, and require a few functions of
the PipelineHandler class to be called through cross-thread invocation
as the pipeline handlers live in the camera manager thread, while the
Camera class is mostly accessed from the application thread. The
PipelineHandler is made to inherit from the Object class to support
this.
Disconnection is currently left out as it is not implemented in pipeline
handlers, and isn't fully supported in the Camera class either. This
will be revisited when implementing proper hotplug support.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Relying on the application event loop to process all our internal events
is a bad idea for multiple reasons. In many cases the user of libcamera
can't provide an event loop, for instance when running through one of
the adaptation layers. The Android camera HAL and V4L2 compatibility
layer create a thread for this reason, and the GStreamer element would
need to do so as well. Furthermore, relying on the application event
loop pushes libcamera's realtime constraints to the application, which
isn't manageable.
For these reasons it's desirable to always run the camera manager, the
pipeline handlers and the cameras in a separate thread. Doing so isn't
too complicated, it only involves creating the thread internally when
starting the camera manager, and synchronizing a few methods of the
Camera class. Do so as a first step towards defining the threading model
of libcamera.
The event dispatcher interface is still exposed to applications, to
enable cross-thread signal delivery if desired.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Make the signal connection and disconnection thread-safe, and document
them as such. This is required to make objects connectable from
different threads.
The connect(), disconnect() and emit() methods are now all protected by
a global mutex, which may generate a high lock contention. This could be
improved with finer-grained locks or with a pool of mutexes.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Define the thread-safety attributes of the classes and methods that are
either thread-safe or thread-bound. The CameraManager, Camera and
PipelineHandler will be addressed separately.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Document the design of libcamera's threading support, and prepare to
document thread-safety of classes and functions with a doxygen alias
command.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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qcam currently only displays a standard viewfinder. As such set the
StreamRole parameter to Viewfinder so that the pipeline handlers can
setup the appropriate resolutions and formats.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Access the ELF types corresponding to the native word size using the
ElfW() macro instead of template types. This is the standard method and
simplifies the code.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Fix two trivial issues in the documentation of the FrameBufferAllocater
class.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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sys/sysmacros.h was an incorrect choice, which doesn't work with musl.
POSIX mandates dev_t to be defined by sys/types.h, so utilise that
header instead.
Fixes: effe4d6ced88 ("libcamera: camera_manager, pipeline_handler: allow retrieving cameras by device numbers")
Signed-off-by: Madhavan Krishnan <madhavan.krishnan@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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When the log severity names were added, there was only 4 characters
reserved for their printing. When the FATAL level was added, this
increased to 5, and thus both DBG and ERR can be expanded to their full
spelling. This also brings the levels in line with the representation
that can be used when calling logSetLevel().
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Move all accesses to the state_ and disconnected_ members to functions
of the Private class. This will make it easier to implement
synchronization, and simplifies the Camera class implementation.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Use the d-pointer idiom ([1], [2]) to hide the private data members from
the Camera class interface. This will ease maintaining ABI
compatibility, and prepares for the implementation of the Camera class
threading model.
The FrameBufferAllocator class accesses the Camera private data members
directly. In order to hide them, this pattern is replaced with new
private member functions in the Camera class, and the
FrameBufferAllocator is updated accordingly.
[1] https://wiki.qt.io/D-Pointer
[2] https://en.cppreference.com/w/cpp/language/pimpl
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Making CameraManager::cameras() thread-safe requires returning a copy of
the cameras vector instead of a reference. This is also required for
hot-plugging support and is thus desirable.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Use the d-pointer idiom ([1], [2]) to hide the private data members from
the CameraManager class interface. This will ease maintaining ABI
compatibility, and prepares for the implementation of the CameraManager
class threading model.
[1] https://wiki.qt.io/D-Pointer
[2] https://en.cppreference.com/w/cpp/language/pimpl
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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The V4L2VideoDevice::exportBuffers(),
PipelineHandler::exportFrameBuffers() and
FrameBufferAllocator::allocate() functions all return the number of
allocated buffers on success, but are documented as returning 0 in that
case. Fix their documentation.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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The slots list is touched from most of the Signal template functions. In
order to prepare for thread-safety, move handling of the list to a small
number of non-template functions in the SignalBase class.
This incidently fixes a bug in signal disconnection handling where the
signal wasn't removed from the object's signals list, as pointed out by
the signals unit test.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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We use static local variables to indicate errors in methods that return
a const reference. The local variables can thus be const, make them so.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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ConnectionTypeBlocking always invokes the method through inter-thread
message passing, which results in deadlocks if the sender and receiver
live in the same thread. The deadlock can easily be avoided by turning
the invocation into a direct call in this case. Do so to make
ConnectionTypeBlocking easier to use when some of the senders live in
the same thread as the receiver while the other senders don't.
Extend the object-invoke test to cover this usage.
While at it reformat the documentation to avoid long \brief lines.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
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The viewfinder is drawn using a QLabel. This could support scaling
through QLabel::setScaledContents(), but in a very inefficient way. To
maintain reasonable efficiency, turn the viewfinder into a QWidget and
draw the image directly using a QPainter.
No performance change was noticed running on a fast x86 machine, and
performance was 60% higher when scaling up to full screen compared to
QLabel.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The current thread ID is useful when debugging concurrency issues. Print
it in log messages. The syslog target is left out as the thread ID would
have little use there, and partly duplicates the process ID.
The log messages now look as follows.
[19:10:33.206560546] [22096] INFO Camera camera_manager.cpp:274 libcamera v0.0.0+993-32696686
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
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The current thread ID is useful when logging message to debug
concurrency issues. Add a method to retrieve it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
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This capability tells the application that mmap() is supported. GStreamer
would return an error saying there there is no input/output method supported
by this device otherwise. This was tested with:
LD_PRELOAD=$(pwd)/build/src/v4l2/v4l2-compat.so GST_DEBUG="v4l2*:7" gst-launch-1.0 v4l2src ! videoconvert ! autovideosink
With this patch, GStreamer will reach playing state. It then blocks waiting on
poll() which is not implemented yet on our side.
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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When inserting an element with emplace(), the element is constructed
in-place with the parameters to the emplace() method being forwarded to
the constructor of the element. For std::map containers, the element is
an std::pair<const Key, T>. The constructors of std::pair<T1, T2> fall
into three categories:
(1) Default, copy and move constructors (and related versions)
(2) Constructors that take lvalue or rvalue references to T1 and T2
(3) A forwarding constructor that forwards parameters to the
constructors of T1 and T2
The first category isn't useful in most cases for std::map::emplace(),
as the caller usually doesn't have an existing std::pair<const Key, T>
for the element to be inserted.
The constructor from the third category is useful to avoid constructing
intermediate Key or T instances when the caller doesn't have them
available. This constructor takes two std::tuple arguments that contain
the arguments for the Key and T constructors, respectively. Due to
template deduction rules, usage of such a constructor couldn't be
deduced by the compiler automatically in all cases, so the constructor
takes a first argument of type std::piecewise_construct_t that lets the
caller force the usage ot the forwarding constructor (also known for
this reason as the piecewise constructor). The caller uses a construct
such as
map.emplace(std::piecewise_construct,
std::forward_as_tuple(args_for_Key, ...),
std::forward_as_tuple(args_for_T, ...));
This syntax is a bit heavy, but is required to construct Key and T
in-place from arguments to their non-default constructor (it is also the
only std::pair non-default constructor that can be used for non-copyable
non-movable types).
When the caller of std::map::emplace() already has references to a Key
and a T, they can be passed to the std::pair piecewise constructor, and
this will create std::tuple instance to wrap the Key and T references
arguments to ultimately pass them to the Key and T copy constructors.
map.emplace(std::piecewise_construct,
std::forward_as_tuple(Key_value),
std::forward_as_tuple(T_value));
While this mechanism works, it's unnecessary complex. A constructor of
std::pair that takes references to Key and T can be used without any
performance penalty, as it will also call the copy constructor of Key
and T. In this case we can use a simpler constructor of std::pair, and
thus a simpler call of std::map::emplace.
map.emplace(Key_value, T_value);
We have a couple occurrences of this above misuse of piecewise
construction. Simplify them, which simplifies the code and reduces the
generated code size.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Now that we're using C++-14, drop utils::make_unique for
std::make_unique.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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C++14 is a minor release that doesn't introduce major new concepts or
paradigms compared to C++11, but brings two useful changes for us:
- std::make_unique allows dropping our custom implementation in utils.
- Functions returning constexpr are not assumed to be const anymore,
which is needed to create a standard-conformant span implementation.
All the g++ and clang++ versions we support and test (g++-5 onwards and
clang++6 onwards) support C++14. However, due to a defect in the
original C++14 specification, solved in N4387 ([1]), compilation would
fail on g++-5 due to the use of std::map::emplace() with a non-copyable
value type. It turns out we can easily fix it by switching to the
explicit piecewise emplace() overload.
There is thus really nothing holding back the switch. Let's do it, and
update the coding style accordingly.
[1] http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4387
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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The gen-controls.py script hardcodes the path to the python interpreter
to /usr/bin/python3 in the first line of the script. This hardcodes
usage of the host python3, even when building in cross-compilation
environments that may ship their own version of python. Fix it by
setting the interpreter to '/usr/bin/env python3'.
Reported-by: Madhavan Krishnan <madhavan.krishnan@linaro.org>
Suggested-by: Nicolas Dufresne <nicolas@ndufresne.ca>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Doxygen generates the following warning:
src/libcamera/ipa_interface.cpp:262: warning: explicit link request to 'dup()' could not be resolved
Fix it by disabling link generation by prefixing the function name with
a %.
Fixes: 4b9bd6c3ad94 ("libcamera: ipa_interface: Document the ownership of dmabufs passed to map_buffers()")
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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