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Provide a getter method to access the device node path. For video
devices it is usually the most informative description.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Add test for V4L2Device set and get format methods.
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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Add test for video format get and set operations on V4L2Subdevice class.
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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Update the crop/compose rectangle provided to setCrop()/setCompose()
methods with the rectangle sizes set by the device driver after a
S_SELECTION ioctl operation.
While at there, fix the use of 'top' and 'left' field of the selection
rectangle, which where wrongly used.
Fixes: 468176fa07d9 ("libcamera: Add V4L2Subdevice")
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Prefix the V4L2Subdevice error messages with the name of the entity.
Remove the manually printed name from log messages where it was used and
standardize error messages while at there.
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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Store the media entity backing the V4L2Subdevice and add a deviceName()
method to retrieve the human readable name of the subdevice, which is
created using the name of the associated media entity.
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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There is a need to better control the order of operations an application
performs on a camera for it to function correctly. Add a basic state
machine to ensure applications perform operations on the camera in good
order.
Internal to the Camera states are added; Available, Acquired,
Configured, Prepared and Running. Each state represents a higher state
of configuration of the camera ultimately leading to the highest state
where the camera is capturing frames. Each state supports a subset of
operations the application may perform.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The arrays that store Stream pointers shall always contain unique
values. Storing them in vectors opens up for the same stream pointer
appearing twice. Remove this possibility by storing them in a set which
guarantees each element is unique.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Upcoming enforcing of order the camera shall be operate on is not
compatible with the cam utility. Requests shall be queued after the
camera is started, not before.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Rapid growth of the library have resulted in slightly different wording
to document that a function returns 0 on success or a negative error
code otherwise. Align all different variations.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The return statement is missing altogether and an error is silently
ignored. Fix this and also update the empty map to use the correct type
for the map key.
Fixes: 65ea2422d24a3073 ("libcamera: camera: extend camera object to support configuration of streams")
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Running the cam tool without any options results in the tool to exit
with EXIT_FAILURE but no usage being printed, this is confusing. Improve
this by also printing the usage text.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Since commit c8c546fe99a343c1 ("cam: options: Add option type handling
to options parser") introduced type handling for options the context the
option is read became important. When reading the camera option for
printing there is no explicit context to print it as a string and
instead the int context was chosen resulting in:
$ cam --camera foo
Camera 0 not found
While the expected output is:
$ cam --camera foo
Camera foo not found
Fix this by providing the correct context for the camera option when
printing it.
Fixes: c8c546fe99a343c1 ("cam: options: Add option type handling to options parser")
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The return value when start() and stop() the camera should be checked
and handled.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The allocated buffers needs to be freed once the application is done
with them.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The only caller of configureStreams() stores its return value as an int
and not bool. This is confusing and also prevents the (possibly)
different error codes returned by Camera::configureStreams() to be
propagated inside the cam tool. Fix this by changing the return type to
int and propagate the return value from the camera.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The format requested by configureStreams() should exactly match what is
programmed on the video device. If they do not match the call should
fail as the application in that case will not know what configuration
was actually programmed.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The format requested by configureStreams() should exactly match what is
programmed on the video device. If they do not match the call should
fail as the application in that case will not know what configuration
was actually programmed.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Extend the documentation to explicitly state that the pipeline handler
implementations are responsible for validating that the requested
configuration can be exactly satisfied by the hardware.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The SUBDEV_S_SELECTION argument needs to be a pointer. Fix it.
Fixes: 468176fa07d9 ("libcamera: Add V4L2Subdevice")
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Using std::move() on return statement of a method or on the its returned
value prevents the compiler from implementing copy-elision. Discourage
that in the coding style document.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Remove the std::move() call on the shared_ptr<MediaDevice *> returned by
the search() method and remove the std::move() call on temporary return
value in pipeline handlers that use the method.
Thanks to copy elision, the regular constructor of the newly created
object is called, avoiding un-necessary copies.
Furthermore, the use of std::move() in the return and assignment
statements prevents the compiler from performing copy elision, forcing
it to generate two sequences of un-necessary calls to the class'
move constructor and destructor.
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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Since there is no valid reason to exceed 80 columns for this lane, break
it.
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 V4L2Subdevice class uses MediaEntity instances, and the
corresponding header is not included.
Fix this by forward declaring the MediaEntity class.
Fixes: 468176fa07d9 ("libcamera: Add V4L2Subdevice")
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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Obtain two V4L2Devices and use one to obtain a BufferPool.
Propagate the formats from the first to the second device and then commence
sending buffers between the two devices in a ping-pong fashion.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Ensure that the cleanup operation releases the device and resources.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Change the variable name globally throughout the tests.
Repair the V4L2DeviceTest constructor style, as checkstyle complained.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Provide the ability to import a BufferPool into the V4L2Device allowing
external dmabuf backed buffers to be queued.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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exportBuffers() can only operate on an existing BufferPool allocation. The
pool identifies its size through its .count() method.
Passing a count in to the exportBuffers() call is redundant and can be
incorrect if the value is not the same as the BufferPool size.
Simplify the function and remove the unnecessary argument, correcting all uses
throughout the code base.
While we're here, remove the createBuffers() helper from the V4L2DeviceTest
which only served to obfuscate which pool the buffers were being allocated for.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Use V4L2_FIELD_NONE where applicable to disable support for interlaced frames.
We are unlikely to support interlaced frames on cameras so hardcode this field
type for now. If we decide to support interlacing later it can be revisited.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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To queue a buffer to an output device, we must set the buffer properties.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The capture_async test was written to run for a fixed 5 second duration.
Modify the test such that it runs until it has captured 30 frames, or a 10
second time out occurs.
Running the capture_async test on an ARM64 platform using VIVID captures 30
frames in 6.15 seconds.
There may be scope to optimise this speed by changing the format on the capture
device.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Utilise the VIVID capture device for testing the V4L2Device objects.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Add the DeviceEnumerator category to the last LOG() call requiring it.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Add the V4L2Subdev category to the last LOG() call requiring it.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Add the V4L2 category to the LOG() statements.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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When a signal is connected to a member function slot, the slot is not
disconnected when the slot object is deleted. This can lead to calling a
member function of a deleted object if the signal isn't disconnected
manually by the slot object's destructor.
Make signal handling easier by implementing a base Object class that
tracks all connected signals and disconnects from them automatically
when the object is deleted, using template specialization resolution in
the Signal class.
As inheriting from the Object class may to a too harsh requirement for
Signal usage in applications, keep the existing behaviour working if the
slot doesn't inherit from the Object class. We may reconsider this later
and require all slot objects to inherit from the Object class.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Fix issues reported by checkstyle.py in preparation for further changes.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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The pipeline handler connects the disconnected signal of MediaDevice
instances registered for hotplug handling to a member slot. Disconnect
the signal when the slot is called, as the pipeline handler will be
deleted.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Our coding style doesn't add a space after the template keyword. Fix the
source code accordingly.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Add support for checkers not related to code formatting to the
checkstyle.py script, and create a first checker that catches usage of
the LOG() macro without an explicit category.
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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Our coding style doesn't require a space after the template keyword.
Adjust .clang-format accordingly.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Automate printing of device node name in log messages by inheriting from
the Loggable class.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Introduce a base Loggable class that can be inherited from by other
classes to support adding per-instance information to the log messages.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Reorder the member declaration order in the PipelineHandler class to
match the control flow order, and to declare variables after methods
according to the coding style. Update the documentation accordingly,
preserving the order within the public, protected and private sections,
but grouping related methods together between the sections.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Rename the VIMC pipeline handler to match the naming convention.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Use the helper BufferWriter to optionally write frames to disk as they
are captured.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Add a simpler helper to allow the cam application to write raw captured
frames to disk.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Add an option to capture frames from a camera and keep it running until
the user terminates by sending SIGINT.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Replace the buffer allocation, capture start/stop and request queue
stubs with real implementations.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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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