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Add a simple Size structure that contains an image width and height.
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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Add constructor to SizeRange which initialize all the size range fields
to 0.
While at there make the in-line constructor declarations respect the
coding style by moving braces to a new line.
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 secure_getenv() call is not provided by all C libraries. Support
this feature by implementing our own version.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Differing implementations of basename() exist, some of which may modify
the content of the string passed as an argument.
The implementation of basename() is trivial, thus to support different
C librariese, provide our own version which accepts and returns a const
char *.
Update the call sites to use the new implementation.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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When the camera provides MJPEG, use the QImage JPEG decompression code
to convert that to RGB.
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>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Add a static method to V4L2Subdevice class to create a V4L2Subdevice
instance from a media entity name.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Add a static method to V4L2Device class to create a V4L2Device instance
from a media entity name.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Rename the 'deviceName()' method to 'entityName()' as it actually
returns the name of the entity backing the v4l2 subdevice.
While at it, make the names getter methods return a const reference
instead of returning by copy.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Add toString() helpers to pretty print out the sizes of a Rectangle.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Add an internal format.h and format.cpp files to collect libcamera image
format related types, helpers and structures. Define and document the
FormatEnum type, used to enumerate pixel image formats and associated
image resolutions.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Add toString() helpers to pretty print out a V4L2Device or V4L2Subdevice
format.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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qcam is a sample camera GUI application based on Qt. It demonstrates
integration of the Qt event loop with libcamera.
The application lets the user select a camera through the GUI, and then
captures a single stream from the camera and displays it in a window.
Only streams in YUYV formats are supported for now.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Tested-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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An empty option list is not necessarily an error. Add a new empty()
function to test the option list for emptiness, and modify the valid()
function to only notify parsing errors. As a side effect this allows
accessing partially parsed options, which may be useful in the future.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Add a flag to indicate if an option can be repeatable. If an option is
repeatable it must be accessed thru the array interface, even if it's
only specified once by the user.
Also update the usage generator to indicate which options are
repeatable.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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To allow specifying the same argument option multiple times a new type
of OptionValue is needed. As parsing of options is an iterative process
there is a need to append options as they are parsed so instead of
setting values using the constructor a new addValue() method is used.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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In preparation for support of multiple instances of the same option,
create a separate enum for the OptionValue types as it will diverge from
enum OptionType.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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succcess -> success
categorized -> categorised
Acked-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The local variable ifaceId generates a compiler warning that it is used
without initialisation.
The loop, and check against the loop iterator, and the
topology.num_interfaces actually ensures that this isn't the case, and
that ifaceId can only be used when set to a valid ID.
The media_v2_interface.id field documents the ID as simply "Unique ID
for the interface" but does not specify if zero is a valid ID or not. As
such we don't further check the pre-initialised ID for validity and keep
the existing check on the iterator count to determine if the ID had been
discovered successfully.
Fixes: d4af90d72901 ("libcamera: media_device: Create entities with
major and minor numbers")
Acked-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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It is not permitted to configure streams before a camera is acquired.
Fixes: 77100a7578d8a0cc ("libcamera: camera: add state machine to control access from applications")
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Before calling into the pipeline handler make sure the streams provided
by the application actually belongs to the camera.
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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Buffers must have all mappings destroyed before buffers can be freed by the
V4L2 device that has allocated them.
Swap the ordering of freeBuffers() and destroyBuffers() to correct this.
Fixes: bd38112b7795 ("libcamera: camera: Extend the interface to support capture")
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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When constructing a Plane, the exported buffer provides a dmabuf handle which
is set to the Plane object.
This action duplicates the handle for internal storage, and the original fd is
not used and needs to be closed.
Close the handle, ensuring that the resources can be correctly managed.
Fixes: 771befc6dc0e ("libcamera: v4l2_device: Request buffers from the device")
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Cosmetic update of V4L2Device class: remove the return type from Doxygen
documentation of inline functions.
Cosmetic update, no functional changes intended.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Add support for devices that provide video meta-data to v4l2_device.cpp
and re-arrange bufferType handling in open() method.
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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Cosmetic updated of V4L2Subdevice class: re-sort methods and comments to
reflect the declaration order in the class definition.
Cosmetic update, no functional changes intended.
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Implement format and size enumeration methods to list all the available
subdevice image resolutions and formats.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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When stopping the stream all pending requests are cancelled, resulting
in the request completion signal being emitted with the request status
set appropriately. Check the request status in the request completion
slot and skip requeuing the request if it has been cancelled.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Request complete by themselves when all the buffers they contain have
completed, connecting the buffer's completed signal to be notified of
buffer completion. While this works for now, it prevents pipelines from
delaying request completion until all metadata is available, and makes
it impossible to ensure that requests complete in the order they are
queued.
To fix this, make request completion handling explicit in pipeline
handlers. The base PipelineHandler class is extended with
implementations of the queueRequest() and stop() methods and gets new
completeBuffer() and completeRequest() methods to help pipeline handlers
tracking requests and buffers.
The three existing pipeline handlers connect the bufferReady signal of
their capture video node to a slot of their respective camera data
instance, where they use the PipelineHandler helpers to notify buffer
and request completion. Request completion is handled synchronously with
buffer completion as the pipeline handlers don't need to support more
advanced use cases, but this paves the road for future work.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Add a new field to the Request class to report its completion status,
and a new complete() method to update the status.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Add a new field to the Buffer class to report its completion status,
with a new cancel() method to mark the buffer as cancelled.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Mandate creationg of pipeline-specific data by pipeline handlers. This
allows simplifying the API by passing the pipeline-specific data to the
registerCamera() method and removing the separate setCameraData()
method.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Extend the CameraData class with two member variables pipe_ and camera_
that store pointers to the pipeline handler and camera that the
CameraData instance is related to. This will be used by pipeline
handlers to access the camera and the pipeline in member methods of
their CameraData derived classes.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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The start(), stop() and queueRequest() methods receive a const pointer
to the related Camera object. The stop() request will need to modify the
state of the camera, in order to report completion of pending requests.
Un-constify the Camera pointer to that method, and update the start()
and queueRequest() methods similarly for coherency.
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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Subclassing CameraData will become mandatory for pipeline handlers.
Create a new VimcCameraData class and instantiate it when creating
cameras to prepare for that change. The video_ and stream_ fields of the
VIMC pipeline handler belong to the camera data, move them there.
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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Subclassing CameraData will become mandatory for pipeline handlers.
Create a new UVCCameraData class and instantiate it when creating
cameras to prepare for that change. The video_ and stream_ fields of the
UVC pipeline handler belong to the camera data, move them there.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Media devices are acquired in the match() function of pipeline handlers,
and explicitly released if no match is found. The pipeline handler is
then deleted, which causes a second release of the media device in the
destructor. Fix this by removing the explicit release in the match()
function.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Acked-by: Jacopo Mondi <jacopo@jmondi.org>
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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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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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