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2019-07-14libcamera: buffer: Split memory information to BufferMemoryLaurent Pinchart
The Buffer class is a large beast the stores information about the buffer memory, dynamic metadata related to the frame stored in the buffer, and buffer reference data (in the index). In order to implement buffer import we will need to extend this with dmabuf file descriptors, making usage of the class even more complex. Refactor the Buffer class by splitting the buffer memory information to a BufferMemory class, and repurposing the Buffer class to reference a buffer and to store dynamic metadata. The BufferMemory class becomes a long term storage, valid and stable from the time buffer memory is allocated to the time it is freed. The Buffer class, on the other hand, becomes transient, is created on demand when an application requires a buffer, is given to a request, and is deleted when the request completes. Buffer and BufferMemory don't need to be copied, so their copy constructor and assignment operators are deleted. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-06-11test: camera: Increase runtime for capture testNiklas Söderlund
Upstream commit 2978a505aaa981b2 ("media: vimc: stream: fix thread state before sleep") changes the frame rate when capturing from the vimc raw capture video nodes. The commit changes the frame rate from thousands of frames per second to to roughly fifty. The libcamera capture test was written with the assumption that vimc would keep providing this fast frame rate and ran for a very short time to decrease the overall run time of tests. This is no longer possible and the test fails as it can't capture enough frames in its runtime, increase the runtime to match the new vimc frame rate. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-06-10test: camera: Fix initialisationKieran Bingham
Three tests {capture,configuration_set,statemachine} override the CameraTest::init() function, and call it as the first action. However they were not checking the return value, and each of the tests will segfault if the VIMC camera is not obtained. Check the return value of the CameraTest base class initialisation and return any errors to the test suite if initialisation fails. 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>
2019-05-23meson: Create and use a dependency for libcamera and its headersLaurent Pinchart
Instead of manually adding the libcamera library and include path to every target that requires it, declare a dependency that groups the headers as source, the library and the include path, and use it through the project. This simplifies handling of the dependency. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2019-05-23meson: Fix coding style in meson.build filesLaurent Pinchart
Consistently go for 4 spaces indentation, and always put a space between the colon in argument lists, as per the examples from the meson documentation. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-05-23libcamera: camera: Add a validation API to the CameraConfiguration classLaurent Pinchart
The CameraConfiguration class implements a simple storage of StreamConfiguration with internal validation limited to verifying that the stream configurations are not empty. Extend this mechanism by implementing a smart validate() method backed by pipeline handlers. This new mechanism changes the semantic of the camera configuration. The Camera::generateConfiguration() operation still generates a default configuration based on roles, but now also supports generating empty configurations to be filled by applications. Applications can inspect the configuration, optionally modify it, and validate it. The validation implements "try" semantics and adjusts invalid configurations instead of rejecting them completely. Applications then decide whether to accept the modified configuration, or try again with a different set of parameters. Once the configuration is valid, it is passed to Camera::configure(), and pipeline handlers are guaranteed that the configuration they receive is valid. A reference to the Camera may need to be stored in the CameraConfiguration derived classes in order to access it from their validate() implementation. This must be stored as a std::shared_ptr<> as the CameraConfiguration instances belong to applications. In order to make this possible, make the Camera class inherit from std::shared_from_this<>. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-05-23libcamera: camera: Return a pointer from generateConfiguration()Laurent Pinchart
To prepare for specialising the CameraConfiguration class in pipeline handlers, return a pointer to a camera configuration instead of a reference from Camera::generateConfiguration(). The camera configuration always needs to be allocated from the pipeline handler, and its ownership is passed to the application. For symmetry, change Camera::configure() to take a CameraConfiguration pointer instead of a reference. This aligns with our coding practice of passing parameters that are modified by the callee by pointer. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2019-05-23libcamera: Refactor the camera configuration storage and APILaurent Pinchart
Refactor the CameraConfiguration structure to not rely on Stream instances. This is a step towards making the camera configuration object more powerful with configuration validation using "try" semantics. The CameraConfiguration now exposes a simple vector-like API to access the contained stream configurations. Both operator[]() and at() are provided to access elements. The isEmpty() method is renamed to empty() and the methods reordered to match the std::vector class. As applications need access to the Stream instances associated with the configuration entries in order to associate buffers with streams when creating requests, expose the stream selected by the pipeline handler through a new StreamConfiguration::stream(). Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2019-05-23libcamera: Use stream roles directly instead of StreamUsageLaurent Pinchart
In order to prepare for an API overhall of the camera configuration generation, remove the StreamUsage class and replace its uses by stream roles. The size hints can't be specified anymore, and will be replaced with an API on the StreamConfiguration to negotiate configuration parameters with cameras. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2019-05-23libcamera: camera: Rename configureStreams() and streamConfiguration()Laurent Pinchart
Rename the configureStreams() and streamConfiguration() methods to configure() and generateConfiguration() respectively in order to clarify the API. Both methods deal with CameraConfiguration objects, and are thus not limited to streams, even if a CameraConfiguration currently contains streams only. While at it, remove the qcam MainWindow::configureStreams() method that is declared but never defined or used. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2019-04-30test: Unify naming of configurations in testsLaurent Pinchart
Name all instances of CameraConfiguration "config", and all instances of StreamConfiguration "cfg" accross all tests. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-04-30libcamera: Use the Size class through libcameraLaurent Pinchart
Several of our structures include width and height fields that model a size while we have a Size class for that purpose. Use the Size class through libcamera, and give it a toString() method like other geometry and format classes. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-04-09libcamera: Switch to CameraConfigurationNiklas Söderlund
Implement the camera configuration thru out the library, tests, cam and qcam tools. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-04-05libcamera: camera: Add support for stream usagesNiklas Söderlund
Instead of requesting the default configuration for a set of streams where the application has to figure out which streams provided by the camera is best suited for its intended usage, have the library figure this out by using stream usages. The application asks the library for a list of streams and a suggested default configuration for them by supplying a list of stream usages. Once the list is retrieved the application can fine-tune the returned configuration and then try to apply it to the camera. Currently no pipeline handler is prepared to handle stream usages but nor did it make use of the list of Stream IDs which was the previous interface. The main reason for this is that all cameras currently only provide one stream each. This will still be the case but the API will be prepared to expand both pipeline handlers and applications to support streams usages. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-04-04test: camera: Remove test for bad Stream IDsNiklas Söderlund
In preparation of reworking how a default configuration is retrieved from a camera remove test that stream IDs must be valid as the data type passed to Camera::streamConfiguration() will change. This change is in preparation for an invasive 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>
2019-04-04test: camera: Remove streams argument from configurationValid()Niklas Söderlund
In preparation of reworking how a default configuration is retrieved from a camera remove the streams and validation using the stream when judging if a camera configuration is valid. This is needed as once stream usage hints are added applications will no longer fetch default configuration based on Stream IDs so using them to verify the returned format is not useful. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2019-03-14test: camera: Add state machine testNiklas Söderlund
Add a test of the different access level enforced by the state machine inside the camera. The state machine aims to limit operations on the camera to the cameras state. The test exercises all states of the camera and verifies that only the intended operations are possible at each stage. 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>
2019-03-14test: camera: Add capture testNiklas Söderlund
Correctly configure the camera using the default configuration and run a capture session for 100 milliseconds, which is plenty of time, in tests over 600 requests completed using the vimc pipeline. The test passes if at least the number of buffers used in the capture times two number of requests completes to prove we cycle through all buffers. 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>
2019-03-14test: camera: Add setting of configuration testNiklas Söderlund
Try to set the default configuration, a modified valid configuration and an invalid configuration. 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>
2019-03-14test: camera: Add read default configuration testNiklas Söderlund
Add a test to verify reading the default configuration from a camera works. 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>