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>
The V4L2Subdevice class uses MediaEntity instances, and the
corresponding header is not included.
Fix this by forward declaring the MediaEntity class.
Fixes: 468176fa07 ("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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
Pick a default format for the one stream in a vimc camera. This is
just a starting point to define a good default format for the vimc
camera, and is expected to evolve over time as the capabilities of the
library grows.
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>
In order to support capture, the camera needs methods to allocate and
free buffers, to start and stop the capture and to queue requests.
Define those interfaces in the Camera class and implement them to call
the corresponding pipeline handler methods.
Once a camera is started the pipeline handler of the camera will begin
processing requests queued to the camera by the application until it
gets stopped.
Once a request is created it can be queued to the camera and the
application will be notified asynchronously once the request is
completed and be able to process all the buffers involved in the
request.
At this point the request objects don't support controls. This will be
extended in the future.
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>
In order to support capture, the pipeline handler needs methods to
allocate and free buffers, to start and stop the capture and to queue
requests. Define those interfaces in the PipelineHandler class and
implement them as stubs in the existing pipeline handlers.
This initial implementation only considers the allocation of new
buffers. Future work would need to expand this to also cover importing
buffers from an external source.
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>
Add a cache of the active stream configuration to the stream object.
This cache is to be updated from the Camera object and can be accessed
read only from both the application and pipeline handlers.
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>
Utilise the event_dispatcher to create a default event loop, and process
asynchronous buffer receive events.
If no frames are captured in 5 seconds, the test will fail.
It will also fail if less than 30 frames have been captured in the same
timeout period.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Provide queueBuffer() and dequeueBuffer() methods to interact with the
V4L2Device.
Buffers will be directly referenced from the bufferPool of the
V4L2Device based on the index in the pool.
The V4L2Device is now opened in non-blocking mode in order to avoid
blocking the dequeueBuffer() method. A signal is emitted when a buffer
is ready and has been dequeued.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
