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Media entities convey information about their main function in the
'function' field of 'struct media_v2_entity'.
Store the main function in the MediaEntity function_ class member and provide
a getter function for that.
While at there update comments, keep the MediaPad description in sync
with the MediaEntity one and remove a stale TODO entry.
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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The Camera class is explicitly reference-counted to manage the lifetime
of camera objects. Replace this open-coded implementation with usage of
the std::shared_ptr<> class.
This API change prevents pipeline handlers from subclassing the Camera
class. This isn't deemed to be an issue. Mark the class final to make
this explicit.
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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Cameras are listed through a double indirection, first iterating over
all available pipeline handlers, and then listing the cameras they each
support. To simplify the API make the pipeline handlers register the
cameras with the camera manager directly, which lets the camera manager
easily expose the list of all available cameras.
The PipelineHandler API gets simplified as the handlers don't need to
expose the list of cameras they have created.
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 CameraManager takes ownership of the dispatcher passed to the
setEventDispatcher() function. Enforces this by using std::unique_ptr<>.
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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Object ownership is a complex topic that can lead to many issues, from
memory leak to crashes. Document the rules that libcamera enforces to
make object ownership tracking explicit.
This is a first version of the rules and is expected to be expanded as
the library is developed.
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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signal.cpp is missing a \file signal.h Doxygen directive, preventing
documentation from being generated for the Signal class. Fix it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Jacopo Mondi <jacopo@jmondi.org>
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Add the move semantics (move constructor and move assignment) to the
allowed C++11 features, as we extensively use them for the unique and
shared pointers.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Jacopo Mondi <jacopo@jmondi.org>
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Nesting namespace names in a single namespace declaration is a C++17
feature. As libcamera depends on C++11 only, nest two separate namespace
declarations instead.
Reported-by: Shik Chen <shik@google.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Provide a base class to construct a v4l2_device object for further tests
and an initial test which validates the FD handle can not be leaked.
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Provide a helper V4L2 device object capable of interacting with the
V4L2 Linux Kernel APIs.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Correct the spelling of 'notifiers'.
Fixes: 8356f8a6ab87 ("libcamera: Add a poll-based event dispatcher")
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The checkstyle utility highlights some minor warnings against the logger
implementation.
Fix these up.
Fixes: edbd2059d8a4 ("libcamera: Add initial logger")
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The msec parameter was multiplied as a 32 bit value when converting to
nanosecond resolution. This wraps at 4.2949 seconds, and causes timers
longer than this to fail.
Fix the multiplication to upcast to 64 bit using an unsigned long long
specifier on the multiplier.
While we're here, initialise the two integer class members in the
constructor initialiser list.
Fixes: 1a57bcb8d1a7 ("libcamera: Add event notification infrastructure")
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Add a test which catches a timer running longer than the nanosecond
resolution of 32 bits.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The ManagedTimer does not initialise the integer 'interval_' variable.
This is set before used, and should not break - but for completeness
(and to cover static analysers) initialise the variable in the
initialiser list.
Fixes: 034ea868027d ("test: Add timer test")
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Import the following files from the Linux UAPI to keep our V4L2
interface in sync:
media-bus-format.h
v4l2-common.h
v4l2-controls.h
v4l2-mediabus.h
v4l2-subdev.h
videodev2.h
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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We make use of the C++11 variadic templates feature in the signal&slot
implementation, mark it as allowed in the coding style documentation.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Jacopo Mondi <jacopo@jmondi.org>
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Convey the fact that the CameraManager class owns the DeviceEnumerator
instance it creates by using std::unique_ptr<> to store the pointer.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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C++14 introduces std::make_unique<>() that makes it easier to initialize
unique_ptr<> instances. As libcamera is limited to C++11, implement our
own version of the function in the libcamera::utils namespace.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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While the DeviceEnumerator::search() function doesn't modify the
instance directly, it returns a non-const pointer to a MediaEntity that
is owned by the DeviceEnumerator instance. This breaks the const
semantics. Don't mark the function as const.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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The EventDispatcherPoll::processNotifiers() function doesn't modify the
argument it receives, make it const.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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The PipelineHandlerFactory::handlers() static method returns a list of
factories, not a list of handlers. Rename it accordingly.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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The pipeline handlers don't define APIs, neither public not internal.
There is thus no need to generate Doxygen documentation from thoses
classes. Add them to the EXCLUDE files pattern.
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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Move documentation from the \file directive to the CameraManager class,
as it documents the class, not the file. Improve the documentation to
provide a brief overview of how the camera manager operates, and fix a
few typos and inconsistencies.
The documentation mentions hotplug even though it isn't implement yet,
as this is a planned feature. More improvements are needed for the
documentation of the CameraManager member functions, and will be added
as part of the API improvements in the near future.
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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Pipeline handler factories are register in a map indexed by their name,
and the list of names is used to expose the factories and look them up.
This is unnecessary cumbersome, we can instead store factories in a
vector and expose it directly. The pipeline factory users will still
have access to the factory names through the factory name() function.
The PipelineHandlerFactory::create() method becomes so simple that it
can be inlined in its single caller, removing the unneeded usage of the
DeviceEnumerator in the factory.
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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Remove our custom declarations for cpp_std=c++11, -Wall, -Wextra and
-Werror, instead prefering to use the built-in default_option parameters
from meson.
Our custom compiler flags (such as -Wno-unused-parameter) are
maintained.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Address a few issues I missed during patch review.
Minor cosmetic change.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Add a few debug printouts that help follow the library intialization
process: what pipeline handlers are registered, what media devices are
created, and which pipeline manager gets matches with the current
system.
The resulting output is the following, on IPU3 devices:
DBG pipeline_handler.cpp:119 Pipeline handler: "PipeHandlerVimc" registered
DBG pipeline_handler.cpp:119 Pipeline handler: "PipelineHandlerIPU3" registered
DBG device_enumerator.cpp:214 New media device: ipu3-imgu created from: /dev/media0
DBG device_enumerator.cpp:214 New media device: ipu3-cio2 created from: /dev/media1
DBG device_enumerator.cpp:255 Succesfull match for media device: ipu3-cio2
DBG device_enumerator.cpp:255 Succesfull match for media device: ipu3-imgu
DBG pipeline_handler.cpp:150 Pipeline handler: "PipelineHandlerIPU3" matched
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Commit 99a3e7bcfb38 ("libcamera: log: Add a LogFatal log level")
expanded the text representation of the log levels to support the FATAL
string, but left the default unknown match at four characters.
This code should never expect to be executed, but for completeness match
the string lengths by adding an extra character to the result.
Fixes: 99a3e7bcfb38 ("libcamera: log: Add a LogFatal log level")
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Add a test unit that exercise link handling on the VIMC media graph.
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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As a new class for test link handling will be added as a separate test,
it makes no sense to have a generic "MediaDeviceTest" class. Rename it
in "MediaDevicePrintTest", and make it run only printing test.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Prevent duplication of boilerplate code as the suite grows by
establishing the foreach pattern in the media_device test suite.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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The output of the sphinx-build for our documentation is overly verbose.
Reduce this output to warnings and errors with the '-q' quiet option.
Acked-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Until we have better Sphinx + Doxygen integration, replace the relative
external link to the API documentation with a placeholder directory,
which will be populated with the Doxygen-generated doc when exporting
documentation to the website. This is needed as the Sphinx documentation
is exported to the root of the website, linking to ../api-html is thus
not possible.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Happy new year :-)
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Add a link in the toctree to the API documentation.
sphinx doesn't seem to support relative external links, but we can trick
it into thinking the link is absolute by adding '#://' at the end.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The toctree is displayed in the navigation bar at the top of the page.
Add short names to the entries that replicate the names currently used
on libcamera.org.
Remove the link to the index and search pages, as the former is empty,
and the latter can be accessed directory from the navigation bar search
box.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The theme replicates the look and feel of the libcamera.org website.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The DeviceEnumerator::create() function allocates a
DeviceEnumeratorUdev and fails to delete it in the error path, causing a
memory leak. Fix it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Several functions are missing documentation for some of them parameters
and/or for their return value. Fix this.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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libcamera.h hasn't been updated with the recently added public headers
event_notifier.h, signal.h and timer.h. Add them.
The event_dispatcher_poll.h header, which used to be public, is now
private, but hasn't been removed from libcamera.h. Remove it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Add a function to the MediaLink class to set the state of a link to
enabled or disabled. The function makes use of an internal MediaDevice
method, which is defined private and only accessible by the MediaLink
setEnabled() function itself.
Also add to MediaDevice a function to reset all links registered in the
media graph.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Add three overloaded functions 'link()' to retrieve a link between two
pads. Each overloaded implementation exposes a different method to
identify the source and sink pads.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Add a MediaDevice member field to the MediaObject class hierarcy.
Each media object now has a reference to the media device it belongs to,
and which it has been created by.
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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The test covers read notification and notifier enable/disable.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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The test covers timer start, timeout, restart after completion, restart
before completion and multiple timers.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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The test covers signal connection, disconnection through all the
provided methods, emission, parameters, and connection of a signal to
multiple slots.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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The list test generates a list binary in the test directory, which
conflicts with the C++ std::list header of the same name. The binary
gets included instead of the header file, breaking compilation.
Rename the test to avoid this.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Provide a poll-based event dispatcher implementation as convenience for
applications that don't need a custom event loop. The poll-based
dispatcher is automatically instantiated if the application doesn't
provide its own dispatcher.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Add three new classes, EventDispatcher, EventNotifier and Timer, that
define APIs for file descriptor event notification and timers. The
implementation of the EventDispatcher is meant to be provided to
libcamera by the application.
The event dispatcher is integrated twith the camera manager to implement
automatic registration of timers and events.
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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