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2022-04-13ipa: vimc: Establish logical order of operationsUmang Jain
It is preferred that the interface definition should represent the logical order in which the operations will be called. The patch has no functional changes. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2022-04-08ipa: ipu3: Replace event-based ops with dedicated functionsUmang Jain
The IPAIPU3 interface currently uses event-type based structures in order to communicate with the pipeline-handler (and vice-versa). Replace the event based structures with dedicated functions associated to each operation. The translated naming scheme of actions to signals are: ActionSetSensorControls => setSensorControls ActionParamFilled => paramsBufferReady ActionMetadataReady => metadataReady The translated naming scheme of events to dedicated functions are: EventProcessControls => queueRequest() EventStatReady => processStatsBuffer() EventFillParams => fillParamsBuffer() The dedicated functions are called from pipeline-handler to the IPA using IPC. These functions run asynchronously and when completed, the IPA emits the respective signals as stated above in the translated naming scheme. The EventProcessControls is translated to queueRequest() to bring symmetry to the IPU3 interface with other IPA interfaces. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2022-04-07libcamera: base: utils: Add missing constructor for DurationLaurent Pinchart
The Duration class is missing the equivalent to the std::chrono::duration constructor that takes a number of ticks expressed as a scalar. Fix it, which allows initializing a Duration instance to 0 or 0.0. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2022-04-06libcamera: camera_sensor: Drop const on the return value of sizes()Laurent Pinchart
The sizes() function returns a value, not a reference. There's no need for it to be const. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2022-04-06pipeline: raspberrypi: Add a Unicam dequeue timeoutNaushir Patuck
Enable the V4L2VideoDevice dequeue timeout for the Unicam Image node, and connect the timeout signal to a slot in the pipeline handler. This slot will log an error message informing the user of a possible hardware stall. The timeout is calculated as 2x the maximum frame length possible for a given mode, returned by the IPA. 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: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-04-06libcamera: v4l2_videodevice: Add a dequeue timerNaushir Patuck
Add a timer that gets reset on every buffer dequeue event. If the timeout expires, optionally call a slot in the pipeline handler to handle this condition. This may be useful in detecting and handling stalls in either the hardware or device driver. 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: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-04-06ipa: raspberrypi: Correct some of the ControlInfo ranges and defaultsDavid Plowman
Some of the values were listed incorrectly. Specifically: ExposureValue: the range is now centred correctly on zero Brightness: the default value (0.0) is made explicit Contrast: the default value is corrected to be 1.0 Saturation: the default value is corrected to be 1.0 Signed-off-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Naushir Patuck <naush@raspberrypi.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-04-02ipa: vimc: Rename processControls() to queueRequest()Umang Jain
Synchronise with other IPA interfaces (for e.g. IPU3, RkISP1) that uses queueRequest() to pass in the request controls to IPA. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-04-02ipa: rkisp1: Split queuing of request and parameter fillingUmang Jain
Queuing of request (i.e. passing of controls to the IPA) and filling of the parameters buffer are two separate operations. Treat them as such by splitting them into two functions in the rkisp1 IPA interface. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-03-28libcamera: v4l2_videodevice: Empty the V4L2 buffer cache on streamOff()Naushir Patuck
When streamOff() is called, ensure the cache entries for the remaining queued buffers are freed since this will not happen via the dequeueBuffer() mechanism. Additionally, add a V4L2BufferCache::isEmpty() function and assert that the cache is empty at the end of the streamOff() call. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Tested-by: David Plowman <david.plowman@raspberrypi.com> 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>
2022-03-28libcamera: v4l2_videodevice: Better tracking of the device stateNaushir Patuck
Replace the existing streaming_ state variable with an enum to track the following three state: Streaming, Stopping, and Stopped. The alternate states will be used in a subsequent commit. 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: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-03-25libcamera: base: timer: Drop start() overload with int argumentLaurent Pinchart
The start(unsigned int msec) overload is error-prone, as the argument unit can easily be mistaken in callers. Drop it and update all callers to use the start(std::chrono::milliseconds) overload instead. The callers now need to use std::chrono_literals. The using statement could be added to timer.h for convenience, but "using" is discouraged in header files to avoid namespace pollution. Update the callers instead, and while at it, sort the "using" statements alphabetically in tests. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
2022-03-23ipa: rkisp1: Replace event-based ops with dedicated functionsUmang Jain
The IPARkISP1Interface currently uses event-type based structures in order to communicate with the pipeline-handler (and vice-versa). Replace the event based structures with dedicated functions associated to each operation. The translated naming scheme of operations to dedicated functions: ActionV4L2Set => setSensorControls ActionParamFilled => paramsBufferReady ActionMetadata => metdataReady EventSignalStatBuffer => processStatsBuffer() EventQueueRequest => queueRequest() The lexical of IPARkISP1::metadataReady() will now conflict with the metadataReady Signal being introduced in this patch as part of the interface change. Hence, rename IPARkISP1::metadataReady() to IPARkISP1::prepareReady() to prevent the conflict. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Tested-by: Paul Elder <paul.elder@ideasonboard.com>
2022-03-15libcamera: ipa: Add lens control member to ipu3 ipa interfaceDaniel Scally
Add further members to the ipu3 ipa interface that will hold lens controls passed in by configInfo Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Daniel Scally <djrscally@gmail.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2022-03-15libcamera: camera_lens: Add function to fetch subdev controlsDaniel Scally
Add a function to the CameraLens class to fetch the V4L2 controls for its V4L2 subdev Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Daniel Scally <djrscally@gmail.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2022-03-15libcamera: camera_sensor: Discover VCMs through ancillary linksDaniel Scally
Add a function to check for and initialise any VCMs linked to the CameraSensor's entity by ancillary links. This should initialise the lens_ member with the linked entity. Call the new function during CameraSensor::init(). Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Daniel Scally <djrscally@gmail.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2022-03-15include: linux: Add MEDIA_LNK_FL_ANCILLARY_LINKDaniel Scally
Add the new media link type macro to the header so we can use it to identify the new links. This isn't handled as a sync to the upstream header because the macro is not yet upstream itself. The latest series attempting to add it being found here: https://lists.libcamera.org/pipermail/libcamera-devel/2022-March/029120.html Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Daniel Scally <djrscally@gmail.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2022-03-15libcamera: Add members to MediaEntity to support ancillary entitiesDaniel Scally
With kernel support for ancillary links, we can describe the relationship between two devices represented individually as instances of MediaEntity. As the only property of that relationship is its existence, describe those relationships in libcamera simply as a vector of MediaEntity pointers to the ancillary devices. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Daniel Scally <djrscally@gmail.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2022-03-11libcamera: Fix typo in a function name for camera lens classJean-Michel Hautbois
The CameraLens class implements a function named "setFocusPostion". There is a typo here, fix it. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-02-04libcamera: pipeline_handler: Register requestsKieran Bingham
Provide a call allowing requests to be registered and associated with the pipeline handler after being constructed by the camera. This provides an opportunity for the PipelineHandler to connect any signals it may be interested in receiving for the request such as getting notifications when the request is ready for processing when using a fence. While here, update the existing usage of the d pointer in Camera::createRequest() to match the style of other functions. Bug: https://github.com/raspberrypi/libcamera-apps/issues/217 Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-01-08include: linux: Update kernel headers to version v5.16-rc7David Plowman
Updated kernel headers to v5.16-rc7 using utils/update-kernel-headers.sh and re-instating libcamera local modifications. 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>
2022-01-03libcamera: pipeline_handler: Make lock() and unlock() thread-safeLaurent Pinchart
The PipelineHandler lock() and unlock() functions are documented as thread-safe, but they're not. Fix them using a mutex. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
2022-01-03libcamera: media_device: Move recursive lock handling to pipeline handlerLaurent Pinchart
The MediaDevice lock is meant to prevent concurrent usage of multiple cameras from the same pipeline handlers. As media devices are acquired by pipeline handlers, we can't have multiple pipeline handlers trying to lock the same media device. The recursive locking detection can thus be moved to the pipeline handler. This simplifies the media device implementation that now implements true lock semantics, and prepares for support of concurrent camera usage. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
2021-12-13libcamera: camera: Add validateColorSpaces to CameraConfiguration classDavid Plowman
This function forces raw streams to have the "raw" color space, and also optionally makes all non-raw output streams to share the same color space as some platforms may require this. When sharing color spaces we take the shared value to be the one from the largest of these streams. This choice is ultimately arbitrary, but can be appropriate if smaller output streams are used for image analysis rather than human consumption, when the precise colours may be less important. Signed-off-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-12-13libcamera: v4l2_subdevice: Add colorSpace field to V4L2SubdeviceFormatDavid Plowman
This adds a ColorSpace field to the V4L2SubdeviceFormat so that we can set and request particular color spaces from V4L2. This commit simply adds the field and fixes some occurrences of brace initializers that would otherwise be broken. A subsequent commit will pass and retrieve the value correctly to/from V4l2 itself. 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>
2021-12-13libcamera: video_device: Support passing ColorSpaces to V4L2 video devicesDavid Plowman
The ColorSpace from the StreamConfiguration is now handled appropriately in the V4L2VideoDevice. Signed-off-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-12-13libcamera: video_device: Convert between ColorSpace class and V4L2 formatsDavid Plowman
Add functions to the V4L2Device class to convert to and from libcamera ColorSpace. These functions are added to the base V4L2Device class so that they can be shared both by the video device class and subdevices. With the ColorSpace class, the color space and related other fields are stored together, corresponding to a number of fields in the various different V4L2 format structures. Template functions are therefore a convenient implementation, and we must explicitly instantiate the templates that will be needed. Note that unset color spaces are converted to requests for the device's "default" color space. 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>
2021-12-13libcamera: stream: Add ColorSpace fields to StreamConfigurationDavid Plowman
This is so that applications can choose appropriate color spaces which will then be passed down to the V4L2 devices. The ColorSpace field is actually optional. If it is not set you will get the camera's default color space. Signed-off-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.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>
2021-12-13libcamera: Add ColorSpace classDavid Plowman
This class represents a color space by defining its color primaries, the transfer (gamma) function it uses, the YCbCr encoding and whether the output is full or limited range. Signed-off-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.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>
2021-12-11libcamera: request: Add Request::Private::prepare()Jacopo Mondi
Add a prepare() function to the Private Request representation. The prepare() function is used by the PipelineHandler class to prepare a Request to be queued to the hardware. The current implementation of prepare() handles the fences associated with the Framebuffers part of a Request. The function starts an event notifier for each of those and emits the Request::prepared signal when all fences have been signalled or an optional timeout has expired. The optional timeout allows to interrupt blocked waits and notify the Request as failed so that it can be cancelled. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-12-11libcamera: pipeline: Introduce stopDevice()Jacopo Mondi
Since a queue of waiting Requests has been introduced, not all Requests queued to the PipelineHandler are immediately queued to the device. As a Camera can be stopped at any time, it is required to complete the waiting requests after the ones queued to the device had been completed. Introduce a pure virtual PipelineHandler::stopDevice() function to be implemented by pipeline handlers and make the PipelineHandler::stop() function call it before completing pending requests. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-12-11libcamera: pipeline_handler: Split request queueingJacopo Mondi
In order to prepare to handle synchronization fences at Request queueing time, split the PipelineHandler::queueRequest() function in two, by creating a list of waiting requests and introducing the doQueueRequest() function that queues requests to the device in the order the pipeline has received them. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-12-11libcamera: request: Add Fence to Request::addBuffer()Jacopo Mondi
Add an optional fence parameter to Request::addBuffer() to allow associating a Fence with a FrameBuffer. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-12-11libcamera: framebuffer: Add Fence to FrameBufferJacopo Mondi
Add to the FrameBuffer::Private class a unique pointer to a Fence. The Fence will be used to signal the availability of the Framebuffer for incoming data transfer. The Fence will be associated to a FrameBuffer at Request::addBuffer() time, and if correctly signalled, reset by the core at Request queue time. If a FrameBuffer completes with errors, due to a Fence wait failure, the Fence will still be owned by the FrameBuffer and it is application responsibility to correctly reset it before reusing the buffer. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-12-11libcamera: fence: Introduce FenceJacopo Mondi
Introduce a Fence class which models a synchronization primitive that allows to notify the availability of a resource. The Fence is modeled as a wrapper of a UniqueFD instance where read events are used to signal the Fence. The class can be later extended to support additional signalling mechanisms. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-12-11libcamera: request: Make Request class ExtensibleLaurent Pinchart
Implement the D-Pointer design pattern in the Request class to allow changing internal data without affecting the public ABI. Move the internal fields that are not needed to implement the public API to the Request::Private class already. This allows to remove the friend class declaration for the PipelineHandler class, which can now use the Request::Private API. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> [Move all internal fields to Request::Private and remove friend declaration] Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-12-07libcamera: base: utils: Add abs_diff() utility functionLaurent Pinchart
The abs_diff() function computes the absolute difference of two elements. This may seem trivial at first, but can lead to unexpected results when operating on unsigned operands. A common implementation of the absolute difference of two unsigned int (used through the libcamera code base) is std::abs(static_cast<int>(a - b)) but doesn't return the expected result when either a or b is larger than UINT_MAX / 2 due to overflows. The abs_diff() function offers a safe alternative. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
2021-12-06libcamera: camera_sensor: Enable to set a test pattern modeHirokazu Honda
This adds a function to set a camera sensor driver a test pattern mode. CameraSensor initializes the test pattern mode by Off. Signed-off-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2021-12-06libcamera: camera_sensor: Reference test pattern modes by enum typeHirokazu Honda
The CameraSensor stores TestPatternModes as an int32_t. This prevents the compiler from verifying the usage against the defined enum types. Fix references to the TestPatternMode to store the value as the TestPatternModeEnum type which is defined by the control generator. Signed-off-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2021-12-06libcamera: framebuffer: Enable attaching additional data to FrameBufferHirokazu Honda
We cannot have a subclass of FrameBuffer because it is marked as final. This adds a FrameBuffer constructor with FrameBuffer::Private. So we can attach some additional resources with FrameBuffer through a customized FrameBuffer::Private class. Signed-off-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2021-12-04libcamera: base: shared_fd: Add comparison operatorsLaurent Pinchart
Add == and != comparison operators between two SharedFD instances, and use them to replace manuel get() calls. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2021-12-04libcamera: base: shared_fd: Rename fd() to get()Laurent Pinchart
For consistency with UniqueFD, rename the fd() function to get(). Renaming UniqueFD::get() to fd() would have been another option, but was rejected to keep as close as possible to the std::shared_ptr<> and std::unique_ptr<> APIs. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
2021-12-04libcamera: base: Rename FileDescriptor to SharedFDLaurent Pinchart
Now that we have a UniqueFD class, the name FileDescriptor is ambiguous. Rename it to SharedFD. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2021-12-04libcamera: v4l2_videodevice: Pass FileDescriptor to open()Laurent Pinchart
The V4L2VideoDevice::open() function that takes an open file handle duplicates it internally, and leaves the original handle untouched. This is documented but not enforced through language constructs. Fix it by passing a FileDescriptor to the function. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2021-12-04libcamera: v4l2_videodevice: Use fd for a file descriptorHirokazu Honda
Manages file descriptors owned by V4L2VideoDevice by UniqueFD. This also changes the return type of exportDmabufFd to UniqueFD from FileDescriptor in order to represent a caller owns the returned file file descriptor. Signed-off-by: Hirokazu Honda <hiroh@chromium.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2021-12-04libcamera: v4l2_device: Use UniqueFD for a file descriptorHirokazu Honda
Manages a file descriptor owned by V4L2Device for a v4l2 device node by UniqueFD. Signed-off-by: Hirokazu Honda <hiroh@chromium.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2021-12-04libcamera: media_device: Manage fd by UniqueFDHirokazu Honda
Manages a file descriptor owned by MediaDevice for a media device node by UniqueFD. Signed-off-by: Hirokazu Honda <hiroh@chromium.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2021-12-04libcamera: process: Manage pipe fds by UniqueFDHirokazu Honda
Manages the file descriptors owned by Process for pipe by UniqueFDs. Signed-off-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-12-04libcamera: ipc_unixsocket: Use UniqueFD for a file descriptorHirokazu Honda
IPCUnixSocket::create() creates two file descriptors. One of them is stored in IPCUnixSocket and the other is returned to a caller. This clarifies the ownership using UniqueFD. Signed-off-by: Hirokazu Honda <hiroh@chromium.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2021-12-04libcamera: file: Manage fd by UniqueFDHirokazu Honda
Manages the file descriptor owned by File by UniqueFD. Signed-off-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>