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2021-01-13libcamera: sysfs: Fix directory exists checkNiklas Söderlund
The scope of File::exists() was changed to only validate that a file exists and is therefore not usable to check if a directory exists. This breaks the persistent name generation for DT based systems as it uses File::exists() to check for directories, fix this by using stat() directly. On Scarlet the persistent names of the cameras are impacted by this and where incorrectly reported as: $ cam -l Available cameras: 1: Internal front camera (platform/ff160000.i2c/i2c-7/7-003c ov2685) 2: Internal front camera (platform/ff160000.i2c/i2c-7/7-0036 ov5695 While the expected ones are restored with this fix: $ cam -l Available cameras: 1: Internal front camera (/base/i2c@ff160000/camera@3c) 2: Internal front camera (/base/i2c@ff160000/camera@36) Fixes: 8f4e16f014c820a0 ("test: file: Check that directories are not treated as files") Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-01-12libcamera: pipelines: ipu3: Simplify error bail out path on start()Umang Jain
On the bail out path, always ensure that ImgU and CIO2 are stopped before freeing the buffers. V4L2VideoDevice class guarantees that calling stop() without having to call start() is harmless, hence use this guarantee to simplify error paths. Signed-off-by: Umang Jain <email@uajain.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-01-12libcamera: v4l2_videodevice: Track streaming stateKieran Bingham
Track the state of streamon/streamoff calls to simplify error paths. Ensuring that streamOff() can be called on non-streaming streams facilitates simpler error code paths, where a set of devices can all call streamOff regardless of their initialisation state. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Umang Jain <email@uajain.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-01-05libcamera: camera: Fix-typoSebastian Fricke
s/chance/change/ Signed-off-by: Sebastian Fricke <sebastian.fricke.linux@gmail.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-12-30libcamera: file: Check files exist()Kieran Bingham
Ensure that when we check for existence with File() it will only return if the path leads to a file, and not a directory. Device nodes which could still be opened by this class are still supported. 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>
2020-12-30libcamera: camera_sensor: Register ColorFilterArrangementJacopo Mondi
Inspect the list of media bus codes supported by the camera sensor in order to deduce the color filter arrangement and register the ColorFilterArrangement draft property. Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2020-12-30libcamera: bayer_format: Add support for mbus codesJacopo Mondi
The existing implementation of the BayerFormat class supports converting a V4L2PixelFormat to a BayerFormat and vice-versa. Expand the class by adding support for converting a media bus code to a BayerFormat instance, by providing a conversion table and a dedicated static methods. Do not provide support for converting a BayerFormat to a media bus code as there's no 1-to-1 mapping between the two. Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2020-12-30libcamera: properties: ColorFilterArrangement draft propertyJacopo Mondi
Define the 'ColorFilterArrangement' draft property. The property is currently identical to ANDROID_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT. Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2020-12-28libcamera: pipeline_handler: Remove Camera pointer from CameraDataNiklas Söderlund
There are no users left of this field, drop it. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2020-12-28libcamera: pipeline_handler: Remove Camera argument from request handlingNiklas Söderlund
There is no need to pass the Camera pointer to queueRequest(), completeBuffer() and completeRequest() as the Request also passed contains the same information. Remove the Camera argument to avoid situations where the information in the Request and the argument differ. There is no functional change and no public API change as the interface is only used between the Camera and PipelineHandler. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-12-27libcamera: pipeline: simple: Remove the unused configs_ variablePhi-Bang Nguyen
Remove the unused configs_ member variable in SimpleCameraData. Signed-off-by: Phi-Bang Nguyen <pnguyen@baylibre.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-12-27libcamera: bound_method: Fix enumerators documentationLaurent Pinchart
The Doxygen documentation for enumerators of the ConnectionType enumeration prefixes the enumerator name with the enumeration name. For unscoped enumerations, this is incorrect. Drop the scope. This fixes warnings produced by Doxygen when multiple enumerators with identical names are defined in different scopes. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-12-20libcamera: controls: Add DigitalGain controlDavid Plowman
This control reports the global digital gain applied by the pipeline as a whole, after capturing a raw image from the sensor. Signed-off-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-12-18libcamera: pipeline: simple: Remove non-implemented methodsJacopo Mondi
The initLinks() and createCamera() methods are declared but never defined. Remove them. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2020-12-14libcamera: pipeline: Manage resources with std::unique_ptr<>Laurent Pinchart
Replace manual resource destruction with std::unique_ptr<> where applicable. This removes the need for several destructors. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2020-12-14libcamera: pipeline: vimc: Use V4L2*::fromEntityName() where possibleLaurent Pinchart
Replace manual construction of V4L2VideoDevice and V4L2Subdevide with the fromEntityName() helper where possible. The returned pointer is managed as a std::unique_ptr<>, which simplifies the VimcCameraData destructor. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2020-12-14libcamera: pipeline: raspberrypi: Don't leak RPiCameraData::sensor_Laurent Pinchart
The CameraSensor instance stored in RPiCameraData::sensor_ is allocated dynamically and never deleted. Fix the memory leak by storing it in a std::unique_ptr<>. Fixes: 740fd1b62f67 ("libcamera: pipeline: Raspberry Pi pipeline handler") Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2020-12-14libcamera: Replace ARRAY_SIZE() with std::size()Laurent Pinchart
C++17 has a std::size() function that returns the size of a C-style array. Use it instead of the custom ARRAY_SIZE macro. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Umang Jain <email@uajain.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2020-12-11libcamera: pipeline: raspberrypi: Pass the drop frame count in start, not ↵David Plowman
configure The number of frames to drop (not display) is passed back now from the start method, not configure. This means applications have a chance to set fixed exposure/gain before starting the camera and this can affect the frame drop count that is returned. Note how we need to be able to tell the very first time we start the camera from subsequent restarts, hence addition of the "firstStart_" flag. Both the IPA implementation file and the pipeline handler need matching modifications. Signed-off-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-12-11libcamera: pipeline: raspberrypi: Allow ScalerCrop to work when passed in ↵David Plowman
Camera::start The ScalerCrop control is handled by the pipeline handler, not the IPA, so must be handled explicitly in the Camera::start method. The ScalerCrop code used when processing requests has been factored out to make it easy to reuse. Signed-off-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-12-09libcamera: v4l2_device: Return a unique pointer from fromEntityName()Laurent Pinchart
The fromEntityName() function returns a pointer to a newly allocated V4L2Device instance, which must be deleted by the caller. This opens the door to memory leaks. Return a unique pointer instead, which conveys the API semantics better than a sentence in the documentation. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2020-12-09libcamera: v4l2_subdevice: Return a unique pointer from fromEntityName()Laurent Pinchart
The fromEntityName() function returns a pointer to a newly allocated V4L2Subdevice instance, which must be deleted by the caller. This opens the door to memory leaks. Return a unique pointer instead, which conveys the API semantics better than a sentence in the documentation. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2020-12-08pipeline: ipa: raspberrypi: Pass controls to IPA on startNaushir Patuck
Forward any controls passed into the pipeline handler to the IPA. The IPA then sets up the Raspberry Pi controller with these settings appropriately, and passes back any V4L2 sensor controls that need to be applied. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: David Plowman <david.plowman@raspberrypi.com> Tested-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-12-08libcamera: ipa: Pass a set of controls and return results from ipa::start()Naushir Patuck
This change allows controls passed into PipelineHandler::start to be forwarded onto IPAInterface::start(). We also add a return channel if the pipeline handler must action any of these controls, e.g. setting the analogue gain or shutter speed in the sensor device. The IPA interface wrapper isn't addressed as it will soon be replaced by a new mechanism to handle IPC. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: David Plowman <david.plowman@raspberrypi.com> Tested-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-12-08libcamera: pipeline: Pass libcamera controls into pipeline_handler::start()Naushir Patuck
Applications now have the ability to pass in controls that need to be applied on startup, rather than doing it through Request where there might be some frames of delay in getting the controls applied. This commit adds the ability to pass in a set of libcamera controls into the pipeline handlers through the pipeline_handler::start() method. These controls are provided by the application through the camera::start() public API. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: David Plowman <david.plowman@raspberrypi.com> Tested-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-12-07pipeline: ipa: raspberrypi: Handle failures during IPA configurationNaushir Patuck
If the IPA fails during configuration, return an error flag to the pipeline handler and fail the use case gracefully. At present, the IPA configuration can fail for the following reasons: - The sensor is not recognised, and fails to open a CamHelper object. - The pipeline handler did not pass in controls for the ISP and sensor. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-12-07libcamera: camera_sensor: Initialize PixelArray propertiesJacopo Mondi
Initialize pixel array properties 'PixelArraySize' and 'PixelArrayActiveAreas' by inspecting the V4L2 CROP_BOUNDS and CROP_DEFAULT selection targets. The properties are registered only if the sensor subdevice support the above mentioned selection targets. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2020-12-07libcamera: camera_sensor: Break out properties initializationJacopo Mondi
Break out initialization to its own function in preparation to add more 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>
2020-12-07libcamera: camera_sensor: Adjust CameraSensorInfo::analogCropJacopo Mondi
The CameraSensorInfo::analogCrop top-left corner is defined relatively to the sensor active area. The analogCrop rectangle is constucted by retrieving the V4L2 selection target V4L2_SEL_TGT_CROP which is instead defined relatively to the whole sensor's pixel array size. Adjust the the analogCrop rectangle subtracting from its top-left corner the active area distance from the full pixel array. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2020-12-01libcamera: controls: Improve documentation for ExposureTime and AnalogueGainDavid Plowman
Setting these controls "fixes" them and the AE may not change them; setting them back to zero returns them to the control of the AE algorithm. Signed-off-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-11-30libcamera: control_ids: Keep draft controls lastJacopo Mondi
Let's try not to mix draft controls and regular controls. Draft controls are unstable by definition, and removing or adding them should not impact the enumeration of stable controls. Keep draft controls at the end of the control_ids.yaml file and add a comment to make clear where the draft controls section begins. Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2020-11-26pipeline: raspberrypi: Fix erroneous bayer buffer requeue on buffer matchingNaushir Patuck
With the recent change in the bayer/embedded buffer matching code, a condition would make the bayer buffer be requeued back to the device, even though it could potentially be queued for matching. This would cause unnecessary frame drops as sync would be lost. The fix is to ensure the bayer buffer only gets requeued if the embedded data buffer queue is not empty, i.e. the buffer truly is orphaned. Additionally, we do this test before deciding to flush any of the two queues of all their buffers. Fixes: 909882b (pipeline: raspberrypi: Rework bayer/embedded data buffer matching) Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Tested-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Tested-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-11-24libcamera: camera: Document the camera and pipeline modelLaurent Pinchart
Introduce a pipeline model that lists the operations applied by the camera pipeline. This is a first step towards defining explicitly how the camera processes images, and how the libcamera controls affect the processing. The initial list of operations is meant to be expanded, and possibly refactored (a block diagram should also be considered to make this easier to read). How the controls affect the pipeline is largely missing at this stage, with only a short explanation of the digital zoom to show how this is meant to be documented. More documentation will be added over time. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Sebastian Fricke <sebastian.fricke.linux@gmail.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-11-23libcamera: controls: Improve Control documentation grammarKieran Bingham
A few grammatical errors remain in the Control class documentation. Fix them. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-11-23libcamera: pipeline: rkisp1: fix crop configurationHelen Koike
Crop rectangle was not being configured on the isp output pad nor in the resizer input pad, causing an unecessary crop in the image and an unecessary scaling by the resizer when streaming with a higher resolution then the default 800x600. Example: cam -c 1 -C -s width=3280,height=2464 In the pipeline: sensor->isp->resizer->dma_engine isp output crop is set to 800x600, which limits the output format to 800x600, which is propagated to the resizer input format set to 800x600, and the resizer output format is set to the desired end resolution 3280x2464. Signed-off-by: Helen Koike <helen.koike@collabora.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-11-17pipeline: raspberrypi: Rework bayer/embedded data buffer matchingNaushir Patuck
There is a condition that would cause the buffers to never be in sync when we using only a single buffer in the bayer and embedded data streams. This occurred because even though both streams would get flushed to resync, one stream's only buffer was already queued in the device, and would end up never matching. Rework the buffer matching logic by combining updateQueue() and tryFlushQueue() into a single function findMatchingBuffers(). This would allow us to flush the queues at the same time as we match buffers, avoiding the the above condition. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Tested-by: David Plowman <david.plowman@raspberrypi.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-11-16pipeline: raspberrypi: Use MappedFrameBuffer for embedded data buffersNaushir Patuck
Use a MappedFrameBuffer to mmap embedded data buffers for the pipeline handler to use in the cases where the sensor does not fill it in. This avoids the need to mmap and unmap on every frame. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-11-16libcamera: pipeline: simple: Reset format on capture side of converterLaurent Pinchart
When configuring the converter, the format is first set on the output side based on the format of the camera pipeline output, and then the format is set on the capture side to match the desired stream configuration. The format parameter passed to V4L2VideoDevice::setFormat() uses the same variable for both calls, which has the unwanted side effect of carrying plane configuration from the output side to the capture side of the converter. In particular, the stride or plane size requested on the capture side can become unnecessarily large when converting to a format with a lower number of bits per pixel (for instance converting YUYV to NV12). Fix this by resetting the format variable before using it to configure the capture side. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-11-15libcamera: Move EventDispatcher to internal APILaurent Pinchart
There's no user of the EventDispatcher (and the related EventNotifier and Timer classes) outside of libcamera. Move those classes to the internal API. 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>
2020-11-10libcamera: v4l2_device: Move start of frame detection to V4L2DeviceNiklas Söderlund
The V4L2_EVENT_FRAME_SYNC event may occur on both V4L2 video-devices (V4L2VideoDevice) and sub-devices (V4L2Subdevice). Move the start of frame detection to the common base class of the two, V4L2Device. There is no functional change. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2020-11-08libcamera: camera: Inherit from ExtensibleLaurent Pinchart
Use the d-pointer infrastructure offered by the Extensible class to replace the custom implementation. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-11-08libcamera: camera_manager: Inherit from ExtensibleLaurent Pinchart
Use the d-pointer infrastructure offered by the Extensible class to replace the custom implementation. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-11-08libcamera: Add a base class to implement the d-pointer design patternLaurent Pinchart
The d-pointer design patterns helps creating public classes that can be extended without breaking their ABI. To facilitate usage of the pattern in libcamera, create a base Extensible class with associated macros. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2020-11-07libcamera: Drop unnecessary explicit initialization of V4L2DeviceFormatLaurent Pinchart
The V4L2DeviceFormat class now has default initializers for all members, explicit initialization isn't needed anymore. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-11-07libcamera: v4l2_videodevice: Check plane count when setting formatLaurent Pinchart
When setting (or trying) a format with a multiplanar device, the V4L2VideoDevice::trySetFormatMeta() function iterates over all planes available in the V4L2DeviceFormat structure. The caller is responsible for setting the plane count, and failure to do so properly may result in memory corruption. This can lead to a crash way after the function returns, making the problem difficult to debug. As the issue is caused by a bug in the caller, use an assertion to catch 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>
2020-11-07libcamera: v4l2_videodevice: Zero-initialize planes in V4L2DeviceFormatLaurent Pinchart
The V4L2DeviceFormat class doesn't have a default constructor, neither does it specifies default member initializers for the plane-related members. This results in the planes array and planesCount members being uninitialized by default, leading to undefined behaviour if the user of the class doesn't initialize it explicitly. Most users initialize V4L2DeviceFormat instances, but some don't. We could fix them, but that would likely turn into a game of whack-a-mole. As there's no use case for instantiating a large number of V4L2DeviceFormat instances in a performance-critical code path, let's instead add default initializers to avoid future issues. While at it, define a type of the structures containing plane information, and use an std::array. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-11-03libcamera: request: Add tracepointsPaul Elder
Add and use tracepoints in Request. Requests are core to libcamera operation, thus detecting delays in their processing is important, and serves as a good usage example of tracepoints. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-11-03libcamera: tracing: Implement tracing infrastructurePaul Elder
Implement tracing infrastructure in libcamera. It takes .tp files, as required by lttng, and generates a tracepoint header and C file, as lttng requires. meson is updated accordingly to get it to compile with the rest of libcamera. Update the documentation accordingly. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-10-30libcamera: ipa_manager: Fix typo in descriptionSebastian Fricke
The class IPAManager has no method ipaCreate, but the method createIPA. s/pipeline handlers call the IPAManager::ipaCreate() /pipeline handlers call the IPAManager::createIPA() Signed-off-by: Sebastian Fricke <sebastian.fricke.linux@gmail.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-10-28libcamera: v4l2_device: Remove unused set of retNiklas Söderlund
The last assignment of the ret variable in getControls() is not consumed so it's unnecessary to set it. This likely originates from a similar code flow in setControls() where the ret variable is later consumed. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>