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2019-10-11ipa: rkisp1: Avoid unnecessary copyLaurent Pinchart
Use const references in a for loop to avoid an unnecessary copy. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-10-11libcamera: pipeline: rkisp1: Attach to an IPANiklas Söderlund
Add the plumbing to the pipeline handler to interact with an IPA module. This change makes the usage of an IPA module mandatory for the rkisp1 pipeline. The RkISP1 pipeline handler makes use of a timeline component to schedule actions. This might be useful for other pipeline handlers going forward so keep the generic timeline implementation separate to make it easy to break out. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-10-11libcamera: ipa: rkisp1: Add basic control of auto exposureNiklas Söderlund
Add an IPA which controls the exposure time and analog gain for a sensor connected to the rkisp1 pipeline. The IPA supports turning AE on and off and informing the camera of the status of the AE control loop. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-10-11libcamera: ipa: Extend to support IPA interactionsNiklas Söderlund
The IPA interface needs to support interactions with the pipeline; add interfaces to control the sensor and handling of request ISP parameters and statistics. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-10-10libcamera: request: Add metadata informationNiklas Söderlund
A new ControlList container is needed to hold metadata coming out of the IPA. The list of supported controls in this list is expected to grow, so for now do not add a validator for the list. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-10-10libcamera: controls: Add AeLocked controlNiklas Söderlund
Add a control to report lock status of the Auto Exposure algorithm. The idea is that if an AE algorithm is running the control shall be added to the metadata control list. If the AE algorithm is locked the value shall be set to true, if it's converging it shall be set to false. If the AE algorithm is not running the control shall not be present in the metadata control list. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-10-10libcamera: controls: Add AeEnable controlNiklas Söderlund
Add a control to enable/disable Auto Exposure. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-10-10libcamera: controls: Fix documentation of AwbEnableNiklas Söderlund
Align the wording of the documentation for the AwbEnable control with review comments for similar controls. Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-10-10libcamera: pipeline: Move IPA from pipeline to camera dataNiklas Söderlund
The IPA acts on a camera and not on a pipeline which can expose more then one camera. Move the IPA reference to the CameraData. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-10-08ipa: vimc: Add support for tracing operationsJacopo Mondi
Add support to the dummy VIMC IPA for tracing operation by using a FIFO channel that will be used by the IPA Interface test to verify communications with the IPA. At the moment only add support for the init() operation as it's the only defined one. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2019-10-08ipa: meson: Give IPAs access to internal libcamera APIsJacopo Mondi
Open source IPA implementations can benefit from usage of libcamera internal APIs. Allow this by compiling against the internal headers and linking against libcamera. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2019-10-08ipa: vimc: Rename ipa_dummy to ipa_vimcJacopo Mondi
The DummyIPA is actually a test IPA module for the virtual media controller driver VIMC. Rename it accordingly to its usage. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2019-10-07libcamera: timer: Add start() method with absolute deadlineLaurent Pinchart
The Timer class is started using a timer duration. To help callers that require waiting for an absolute deadline, add a start() overload that takes a std::chrono::steady_clock::time_point value. This will be used by IPAs. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2019-10-07libcamera: timer: Forbid starting or stopping timer from another threadLaurent Pinchart
Starting or stopping a timer from a different thread than the one it belongs to is inherently racy. Disallow it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2019-10-07libcamera: timer: Allow restarting a timer before expirationLaurent Pinchart
The Timer API allows restarting a timer before expiration. This isn't correctly implemented, fix it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-10-07libcamera: timer: Don't reset deadline after time outLaurent Pinchart
Users of the Timer class may benefit from retrieving the timer deadline after it times out. This is currently not possible as the deadline is reset to 0 when the timer times out or is stopped. Fix this by not resetting the deadline, and adding a new running_ field to the Timer class to implement isRunning(). Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2019-10-07libcamera: timer: Remove the interval() methodLaurent Pinchart
The libcamera timers are single-shot timers. They are started with a duration, but fire once only, not based on an interval. Remove the interval concept by removing the interval() method, and rename other occurences of interval to duration. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2019-10-05libcamera: controls: Use ControlValidator to validate ControlListLaurent Pinchart
Replace the manual validation of controls against a Camera with usage of the new ControlValidator interface. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-10-05libcamera: Add ControlValidator implementation for CameraLaurent Pinchart
Add a new CameraControlValidator class that implements the ControlValidator interface for a Camera object. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-10-05libcamera: Add ControlValidatorLaurent Pinchart
The new abstract ControlValidator class defines an interface that will be used by the ControlList class to validate controls. This will allow controls to the validated against different object types, such as Camera and V4L2Device. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-10-05libcamera: v4l2_controls: Use the ControlRange class for control infoLaurent Pinchart
Use the ControlRange class to express the range of a V4L2 control, replacing the open-coded minimum and maximum fields in the V4L2ControlInfo class. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-10-05libcamera: v4l2_controls: Use the ControlValue class for data storageLaurent Pinchart
Use the ControlValue class to replace the manually crafted data storage in V4L2Control. This will help sharing code when more data types will be supported. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-10-05libcamera: controls: Rename ControlInfo to ControlRangeLaurent Pinchart
The ControlInfo class stores a range of valid values for a control. Its name is vague, as "info" has multiple meanings. Rename it to ControlRange. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-10-05libcamera: controls: Remove ControlInfo::idLaurent Pinchart
The ControlInfo id member is only used in the toString() method of the class, and nowhere else externally. The same way that ControlValue doesn't store a ControlId, ControlInfo shouldn't. Remove it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-10-05libcamera: controls: Remove the unused ControlList::update() methodLaurent Pinchart
The ControlList::update() method is unused. While it is meant to fulfil a need of applications, having no user means that it is most probably not correctly designed. Remove the method, we will add it back later if needed. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-10-05libcamera: controls: Auto-generate control_ids.h and control_ids.cppLaurent Pinchart
Bring back auto-generation of control ids. In this version, both the header and the source files are generated from a single YAML file that stores all control definitions. This allows centralising controls in a single file, while the previous version required keeping both declarations (in a header) and documentation (in a the source) in sync manually. Using YAML as a format to store control definitions is a trade-off between ease of use (there are many YAML parsers available) and simplicity (XML was considered, but would have lead to more complex processing). A new build time dependency is added on python3-yaml, which should be available as a package in all distributions and build environments. The YAML format is likely to change over time as we improve documentation of controls, the first version simply copies the information currently available. Future improvements should also include a YAML schema to validate the YAML source file. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-10-04libcamera: controls: Improve the API towards applicationsLaurent Pinchart
Rework the control-related classes to improve the API towards applications. The goal is to enable writing code similar to Request *req = ...; ControlList &controls = req->controls(); controls->set(controls::AwbEnable, false); controls->set(controls::ManualExposure, 1000); ... int32_t exposure = controls->get(controls::ManualExposure); with the get and set operations ensuring type safety for the control values. This is achieved by creating the following classes: - Control defines controls and is the main way to reference a control. It is a template class to allow methods using it to refer to the control type. - ControlId is the base class of Control. It stores the control ID, name and type, and can be used in contexts where a control needs to be referenced regardless of its type (for instance in lists of controls). This class replaces ControlIdentifier. - ControlValue is kept as-is. The ControlList class now exposes two template get() and set() methods that replace the operator[]. They ensure type safety by infering the value type from the Control reference that they receive. The main way to refer to a control is now through the Control class, and optionally through its base ControlId class. The ControlId enumeration is removed, replaced by a list of global Control instances. Numerical control IDs are turned into macros, and are still exposed as they are required to communicate with IPAs (especially to deserialise control lists). They should however not be used by applications. Auto-generation of header and source files is removed for now to keep the change simple. It will be added back in the future in a more elaborate form. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-10-04libcamera: controls: Use explicit 32-bit integer typesLaurent Pinchart
Make the control API more explicit when dealing with integer controls by specifying the size. We already do so for 64-bit integers, using int64_t and ControlTypeInteger64, do the same for 32-bit integers. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-10-04libcamera: controls: Make ControlValue get/set accessors template methodsLaurent Pinchart
The ControlValue get accessors are implemented with functions of different names, whlie the set accessors use polymorphism to support different control types. This isn't very consistent and intuitive. Make the API clearer by using template methods. This will also have the added advantage that support for the new types will only require adding template specialisations, without adding new methods. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-10-04libcamera: controls: Rename ControlValueType to ControlTypeLaurent Pinchart
The type of a control value is also the type of the control. Shorten the ControlValueType enumeration to ControlType, and rename ControlValue* to ControlType* for better clarity. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-10-04ipa: ipa_manager: Print the loaded IPA modules pathJacopo Mondi
Add debug message to report which IPA modules have been loaded and in which order. The loading order is particularly relevant for the test VIMC IPA, as the same IPA is compiled with an open source license tag and a proprietary one and they both match() against the VIMC pipeline handler. Being informed about their loading order is helpful to understand which one of the two is actually in use. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-10-04libcamera: ipa_manager: Sort IPA modules by nameLaurent Pinchart
Sort IPA modules by name when enumerating modules in a directory in order to guarantee a stable ordering. This eases debugging by making issues more reproducible. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2019-10-04libcamera: camera_manager: Fix typo in the documentationLaurent Pinchart
Fix a typo in the CameraManager documentation. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2019-10-01qcam: Fix timers not emitting timeout signalNiklas Söderlund
The timer signal was never emitted in QtEventDispatcher::timerEvent(), this results in timers not working as designed running under the Qt event loop. Fix this by emitting the signal on timeout. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-10-01qcam: Stop timer on timeoutNiklas Söderlund
Stopping the timer will reset the Timer::deadline_ field to 0 fixing potential bugs and call QtEventDispatcher::unregisterTimer() which will take care of the cleanup. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-09-27qcam: Fix unregister of not registered timerNiklas Söderlund
If an unregistered timer is given to QtEventDispatcher::unregisterTimer() an error is printed and Qt gets confused and locks up. Fix this by following the libcamera documentation that passing a unregistered timer is a no-op. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-09-24qcam: Fix ViewFinder memory leakKieran Bingham
When setting the format on the ViewFinder, a new image_ is allocated. Any change in format deletes the existing allocation, but it is not cleaned up on shutdown: Direct leak of 32 byte(s) in 1 object(s) allocated from: #0 0x7f0bf8a7e17f in operator new(unsigned long) (/usr/lib/x86_64-linux-gnu/libasan.so.5+0x10e17f) #1 0x564c7205f7b0 in ViewFinder::setFormat(unsigned int, unsigned int, unsigned int) ../src/qcam/viewfinder.cpp:43 #2 0x564c71fec467 in MainWindow::startCapture() ../src/qcam/main_window.cpp:152 #3 0x564c71fe6c1a in MainWindow::MainWindow(libcamera::CameraManager*, OptionsParser::Options const&) ../src/qcam/main_window.cpp:40 #4 0x564c71fdf133 in main ../src/qcam/main.cpp:76 #5 0x7f0bf5944b6a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x26b6a) Provide a ViewFinder destructor, and delete the allocation as appropriate. Fixes: 97e8b3a2eb32 ("qcam: Add Qt-based GUI application") Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2019-09-23libcamera: ipa_manager: Rework error messages when enumerating IPAsLaurent Pinchart
When enumerating IPAs, the system IPA directory and all the directories listed in the LIBCAMERA_IPA_MODULE_PATH environment variable are listed in turn. Failing to list any of those directories results in an error message being printed for every failure. This is particularly common when developing libcamera, as IPAs may not have been installed locally. To avoid unnecessarily worrying error messages, rework the enumeration procedure to only print a message when no IPA can be found at all. Individual missing directories are not considered as an issue anymore. The message is also downgraded from an error to a warning as the situation may still be normal. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2019-09-15libcamera: proxy: linux: Initialise pointer members at construction timeLaurent Pinchart
If the IPAProxyLinux constructor fails to locate the proxy worker, the socket_ and proc_ member pointers will be left uninitialised, leading the a crash in the destructor. Initialise them both to nullptr. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2019-09-15ipa: Generate the two dummy IPA modules from the same sourceLaurent Pinchart
The ipa_dummy.cpp and ipa_dummy_isolate.cpp only differ in the license reported in the IPAModuleInfo structure. Drop the second file and generate the two .so from ipa_dummy.cpp, with the license defined through the command line. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2019-09-15libcamera: Move list of private headers to src/libcamera/include/meson.buildLaurent Pinchart
The libcamera private headers are listed in src/libcamera/meson.build, while they are located in src/libcamera/include/. The lack of a meson.build in src/libcamera/include/ increases the risk of forgetting to add new headers to the libcamera_headers array. Fix it by moving it to src/libcamera/include/meson.build, and add the missing v4l2_controls.h entry. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2019-09-15libcamera: Move ipa includes to the same level as libcameraLaurent Pinchart
The ipa includes are located in include/libcamera/ipa/. This gives an incorrect impression that they are a sub-part of the rest of the libcamera API, while they are the API towards the IPA the same way that include/libcamera/ contains the API towards applications. To clarify this, move them to include/ipa/. The IPA headers are however still part of libcamera, so installing them to ${prefix}/include/ipa/ would make little sense. To fix this, move the application facing API to ${prefix}/include/libcamera/libcamera/ when installed, and the IPA to ${prefix}/include/libcamera/ipa/. When major versions of libcamera will be released, they could then be installed side by side in ${prefix}/include/libcamera-${version}/. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2019-09-14libcamera: Switch to the std::chrono APILaurent Pinchart
Replace the clock_gettime()-based API with durations expressed as integers with the std::chrono API. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-09-14libcamera: utils: Add clock helpersLaurent Pinchart
In preparation for standardisation of the std::chrono::steady_clock as the libcamera default clock, define aliases for the clock, duration and time point, and add helper functions to convert a duration to a timespec and a time point to a string. More helpers will be added later as needed. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-09-13qcam: Fix compilation errors with gcc-9 and Qt < 5.13Laurent Pinchart
gcc-9 has introduced a deprecated-copy warning that is triggered by Qt header files. The issue has been fixed in Qt 5.13. Fix compilation with earlier Qt versions by disabling the warning. In order to still benefit from the warning when possible, only disable it for gcc-9 and Qt < 5.13. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-09-13libcamera: device_enumerator_udev: Support entities sharing device nodesLaurent Pinchart
Some media devices, such as V4L2 M2M devices, share the same device node for multiple entities. The udev enumerator used to support this, but commit 6e620349009d ("libcamera: device_enumerator: fix udev media graph loading dependency") broke this. To fix the problem, rework the media device to V4L2 devices matching code. A new MediaDeviceDeps internal struct stores unmet device number dependencies for a media device, and is stored in a list of pending media devices. To avoid linear lookups, the dependencies are cached in a reverse map of device number to media device dependencies. Fixes: 6e620349009d ("libcamera: device_enumerator: fix udev media graph loading dependency") 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: Paul Elder <paul.elder@ideasonboard.com>
2019-09-13libcamera: device_enumerator_udev: Avoid double list lookupLaurent Pinchart
DeviceEnumeratorUdev::populateMediaDevice() searches for orphan devices in an std::list, and if found removes them using std::list::remove(). This ends up looking up the entry twice. Replace the remove() call with erase() to fix it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2019-09-13libcamera: device_enumerator_udev: Delay device node lookupLaurent Pinchart
When populating media devices, we look up device nodes for every entity in the media device, regardless of if the entity is present in the orphans list. This causes unnecessary lookups (that may also fail as the device node may not be ready yet at that time). Move the lookup at a later time, when the device node is actually needed. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2019-09-13libcamera: device_enumerator: Move lookupDeviceNode() to child classesLaurent Pinchart
The lookupDeviceNode() method is declared as pure virtual in the base DeviceEnumerator class, but is only called by derived classes. Move it to the DeviceEnumeratorSysfs and DeviceEnumeratorUdev. This allows changing the udev version to take a dev_t instead of separate major/minor, as that's what both the caller and the callee end up using. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2019-09-09src/libcamera/meson.build: link with atomic when neededFabrice Fontaine
On some architectures, atomic binutils are provided by the libatomic library from gcc. Linking with libatomic is therefore necessary, otherwise the build fails with: src/libcamera/4ab8042@@camera@sha/message.cpp.o: In function `libcamera::Message::registerMessageType()': message.cpp:(.text+0x178): undefined reference to `__atomic_fetch_add_4' collect2: error: ld returned 1 exit status This is often for example the case on sparc v8 32 bits. Fixes: - http://autobuild.buildroot.org/results/1f0b8338f5f39aa86b9d432598dae2f53c5f7c84 Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com> [Kieran: Updated commit message to refer to build failure on current master, rather than the old code currently built by buildroot] Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>