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2020-07-27libcamera: process: Fix killing innocent processes unexpectedlyYou-Sheng Yang
When a libcamera::process is being destructed or called kill() without a previous successful call to start(), it's pid_ may remains -1, which causes all the killable processes being killed when passed to `kill(pid_, SIG_KILL)`. Signed-off-by: You-Sheng Yang <vicamo.yang@canonical.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-07-27qcam: Fix spellingYou-Sheng Yang
Fix a typo in the word "Unsupported". Signed-off-by: You-Sheng Yang <vicamo.yang@canonical.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>
2020-07-25libcamera: qcam: Improve colour information in DNG filesDavid Plowman
This patch improves the colour information recorded in DNG files using the ColourCorrectionMatrix metadata for the image. Note that we are not supplying a full calibration using two illuminants, nonetheless the single matrix here appears to be respected by a number of tools. 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>
2020-07-25libcamera: raspberrypi: Add ColourCorrectionMatrix controlDavid Plowman
Implements, for the Raspberry Pi platform, the returning of the CCM (Colour Correction Matrix) used by the pipeline in the libcamera metadata. 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>
2020-07-25libcamera: Add ColourCorrectionMatrix controlDavid Plowman
This control is principally for returning, in the image metadata, the CCM (Colour Correction Matrix) used by the imaging pipeline. By which we mean the 3x3 matrix that is applied to the camera RGB pixels after subtraction of black levels and white-balancing, but before any gamma transformation. Some implementations may also choose to let an application set explicit colour matrices, using this as a control. 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>
2020-07-24android: camera_device: Add ANDROID_REQUEST_MAX_NUM_INPUT_STREAMSNiklas Söderlund
Define the ANDROID_REQUEST_MAX_NUM_INPUT_STREAMS to zero to inform users the HAL does not support any reprocessing. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-07-24android: camera_device: Remove scaler format information from Camera3FormatNiklas Söderlund
The scaler format information was only used for the ANDROID_SCALER_AVAILABLE_FORMATS tag which is deprecated and removed. As it has no other users remove it. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-07-24android: camera_device: Use HAL_PIXEL_FORMAT_* defines for formatsNiklas Söderlund
The documentation says the HAL_PIXEL_FORMAT_* defines shall be used for formats instead of ANDROID_SCALER_AVAILABLE_FORMATS_* for the ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS and ANDROID_SCALER_AVAILABLE_MIN_FRAME_DURATIONS tags. This have worked in the past as the numerical value of the two sets are the same for the formats supported. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-07-24android: camera_device: Remove ANDROID_SCALER_AVAILABLE_FORMATSNiklas Söderlund
According to the documentation the tag ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS deprecates the ANDROID_SCALER_AVAILABLE_FORMATS tag. As the HAL implements both tags remove the deprecated one. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-07-24libcamera: formats: Remove unnecessary explicit constructor callsLaurent Pinchart
When initializing the PixelFormatInfo::format field with a PixelFormat, there's no need to call the PixelFormat (copy) constructor explicitly. Remove the unnecessary calls. 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>
2020-07-23libcamera: v4l2_videodevice: Add using statement for format mapNiklas Söderlund
Define a using statement for the format maps returned by V4L2Device::formats() and use it in all call sites. There is no functional change in this patch. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-07-23libcamera: formats: Remove ImageFormatsNiklas Söderlund
The ImageFormats helper class is not used anymore and can be removed. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-07-23libcamera: v4l2_subdevice: Replace ImageFormats with a mapNiklas Söderlund
Replace the V4L2Subdevice usage of the ImageFormats class with a std::map and the utils::map_keys() helper. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-07-21libcamera: Add support for RGB565 formatNiklas Söderlund
Add support for RGB565 format. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-07-21libcamera: Add support for planar YVU420 formatNiklas Söderlund
Add support for planar YVU420. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-07-17libcamera: pipeline: ipa: raspberrypi: Use dma heap allocs for LS tablesNaushir Patuck
Remove use of vcsm allocations and replace with dma heap allocations. The pipeline handler now passes the fd of the allocation over to the IPA instead of the raw pointer. Also use libcamera::FileDescriptor for fd lifetime management. This commit must be built alongside the accompanying BCM2835 ISP kernel driver changes at https://github.com/raspberrypi/linux/pull/3715. Otherwise a mismatch will cause undefined behavior. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-07-17include: linux: Add dma-buf.h and dma-heap.h UAPI headersNaushir Patuck
This commit adds the dmabuf UAPI headers from the mainline Linux kernel v5.6.19. They are required by the Raspberry Pi library for lens shading table allocations. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-07-17tests: v4l2_compat: Fix v4l2-compliance and v4l2-ctl version parsingPaul Elder
v4l2-compliance originally printed the SHA before the version, leading to the indexing that was used previously. Now that the version is printed before the SHA, the indexing is incorrect. Fix this. Although v4l2-ctl doesn't suffer the same issue, it is more correct to use the zeroth index like the v4l2-compliance version check now does, so fix that as well. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-07-17libcamera: ipa_proxy: Allow stop() on a stopped IPALaurent Pinchart
To make error handling easier in callers, allow the stop() function to be called when the proxy is already stopped, or not started yet. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-07-17libcamera: pipeline: raspberrypi: Start IPA when starting cameraLaurent Pinchart
The IPA is meant to be started when starting the camera, and stopped when stopping it. It was so far started early in order to handle the IPAInterface::processEvent() call related to lens shading table allocation before IPAInterface::configure() to pass the table to the IPA. Now that the lens shading table is passed through configure(), starting the IPA early isn't needed anymore. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
2020-07-17ipa: raspberrypi: Pass sensor config back from configure()Laurent Pinchart
The Raspberry Pi IPA uses the custom RPI_IPA_ACTION_SET_SENSOR_CONFIG frame action to send the sensor staggered write configuration to the pipeline handler when the IPA is configured. Replace this ad-hoc mechanism by passing the corresponding data back from the IPA to the pipeline handler through the configure() response. This allows synchronous handling of the response on the pipeline handler side. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
2020-07-17ipa: raspberrypi: Pass lens shading table through configure() functionLaurent Pinchart
The IPAInterface::configure() function now accepts custom configuration data. Use it to pass the lens shading table instead of using a custom IPA event. This will allow starting the IPA when starting the camera, instead of pre-starting it early in order to process the lens shading table allocation event. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
2020-07-17ipa: raspberrypi: Drop CameraHelper::GetOrientation()Laurent Pinchart
The camera sensor orientation is now handled by the pipeline handler. Drop hardcoded per-sensor orientations from the IPA. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
2020-07-17libcamera: pipeline: raspberrypi: Set sensor flip based on rotationLaurent Pinchart
Instead of receiving sensor orientation configuration from the IPA, retrieve it from the CameraSensor Rotation property, and configure the HFLIP and VFLIP controls accordingly. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
2020-07-17libcamera: pipeline: raspberrypi: Move configureIPA() to RPiCameraDataLaurent Pinchart
The PipelineHandlerRPi::configureIPA() function accesses plenty of member data from the RPiCameraData class and no member from the PipelineHandlerRPi class. Move it to RPiCameraData where it logically belongs. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2020-07-17libcamera: pipeline: raspberrypi: Constify parameter to StaggeredCtrl::set()Laurent Pinchart
The controls parameter of StaggeredCtrl::set(), passed by reference, is not modified by the function. Make it const. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2020-07-17libcamera: pipeline: raspberrypi: Drop unused local variableLaurent Pinchart
The controls variable in PipelineHandlerRPi::start() is unused. Drop it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
2020-07-17libcamera: ipa_interface: Add support for custom IPA data to configure()Laurent Pinchart
Add two new parameters, ipaConfig and result, to the IPAInterface::configure() function to allow pipeline handlers to pass custom data to their IPA, and receive data back. Wire this through the code base. The C API interface will be addressed separately, likely through automation of the C <-> C++ translation. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2020-07-17libcamera: ipa_context_wrapper: Fix bad copy&paste in commentLaurent Pinchart
A comment copied from the IPAInterfaceWrapper incorrectly mentions the IPAInterfaceWrapper class instead of the IPAContextWrapper class. Fix 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>
2020-07-17libcamera: ipa: Document the parameters of the IPA C configure functionLaurent Pinchart
The parameters to the configure() function part of the ipa_context_ops are not documented. Fix that. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2020-07-15libcamera: file: Create the file on open() if it doesn't existLaurent Pinchart
When a file is opened in WriteOnly or ReadWrite mode, create it if it doesn't exist. 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>
2020-07-15test: file: Add file creation testLaurent Pinchart
Add a test to verify file creation with File::open(). The test is expected to fail as the File::open() implementation is not correct. 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>
2020-07-15test: file: Add read/write testsLaurent Pinchart
Add tests for the File::read() and File::write() functions. 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>
2020-07-15libcamera: file: Add read/write supportLaurent Pinchart
Add basic support to read and write data from/to a file, along with retrieving and setting the current read/write position. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-07-15libcamera: geometry: Provide in-place versions of the Size helpersLaurent Pinchart
Add alignDownTo(), alignUpTo(), boundTo() and expandTo() helper functions to the Size class. These are in-place versions of the existing alignedDownTo(), alignedUpTo(), boundedTo() and expandedTo() functions. The new helpers return a reference to the size, to allow chaining the functions. One can thus write size.alignDownTo(16, 16).alignUpTo(32, 32) .boundTo({ 40, 80 }).expandTo({ 16, 80 }); instead of size.alignDownTo(16, 16); size.alignUpTo(32, 32); size.boundTo({ 40, 80 }); size.expandTo({ 16, 80 }); Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-07-15libcamera: geometry: Make Size and Rectangle usable as constexprLaurent Pinchart
There are use cases for declaring constexpr Size and Rectangle instances. Make it possible. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-07-15libcamera: geometry: Turn Size and Rectangle into classesLaurent Pinchart
SizeRange is defined as a class while Size and Rectangle are defined as struct. This is confusing for users in forward declarations. Simplify it by turning both structures into classes. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-07-15libcamera: geometry: Give constructors to RectangleLaurent Pinchart
Rectangle, unlike Size, has no constructor, requiring the users to explicitly initialize the instances. This is error-prone, add constructors. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-07-15libcamera: geometry: Define Rectangle after SizeLaurent Pinchart
A subsequent change to the Rectangle will require the definition of the Size to be available. Define Rectangle after Size to ease review of that change. No code change is included. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-07-15libcamera: geometry: Don't default-initialize Size unnecessarilyLaurent Pinchart
Size has a default constructor, there's no need to default-initialize instances explicitly. Fix it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-07-15libcamera: pipeline: simple: Use std::make_tuple()Laurent Pinchart
Prior to N4387 ([1]), the std::tuple::tuple(const Types&...) constructor was unconditionally explicit. gcc 5 doesn't implement N4387, leading to a compilation error in the simple pipeline handler. Use std::make_tuple() to fix it. [1] http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4387.html Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-07-15libcamera: geometry: Add helper functions to the Size classLaurent Pinchart
Pipeline handlers commonly have to calculate the minimum or maximum of multiple sizes, or align a size's width and height. Add helper functions to the Size class to perform those tasks. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-07-13tests: v4l2_compat: Check v4l2-compliance and v4l2-ctl versionsPaul Elder
v4l2-compliance and v4l2-ctl with version 1.20 and before will fail with v4l2-compat. Check the versions of v4l2-compliance and v4l2-ctl before continuing. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-07-13tests: v4l2_compat: Prettify failure outputPaul Elder
When a test is being run on a video device, there is output like so: Testing /dev/video0 with uvcvideo driver... and when it succeeds, "success" is appended: Testing /dev/video0 with uvcvideo driver... success On failure, however, the output of v4l2-compliance is printed before "failure" is printed, resulting in the first line of the v4l2-compliance output to be printed on the same line as the message: Testing /dev/video2 with uvcvideo driver... v4l2-compliance SHA: not available, 64 bits <v4l2-compliance output> failure Refactor the code to make "failure" print before the output of the test, to prettify the output upon failure. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-07-10libcamera: pipeline: raspberrypi: Fix initial value for scoring routineNaushir Patuck
Use std::numerical_limits to initialise the best score instead of an arbitrary value. This fixes a failure in v4l2-conformance when using the Raspberry Pi pipeline handler and v4l2-compatibility libcamera layer. Reported-by: Paul Elder <paul.elder@ideasonboard.com> Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
2020-07-10tests: v4l2_compat: Add test for v4l2_compatPaul Elder
Test the V4L2 compatibility layer by running v4l2-compliance -s on every /dev/video* device. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-07-10v4l2: v4l2_camera_proxy: Use stream config in tryFormatPaul Elder
For handling try_fmt, the values should be filled in by validating the stream configuration, and not by recalculating them or manually checking against the cached list of formats and sizes. Add a new V4L2Camera::validateConfiguration() function to validate a configuration and use it to obtain size, format, stride, and frameSize values. If the format negotiation fails, return error from try_fmt and s_fmt. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-07-10v4l2: v4l2_camera_proxy: Get stride and frameSize from stream configPaul Elder
The stride and frameSize should be obtained through StreamConfiguration rather than PixelFormatInfo, as pipeline handlers might have different values (eg. for alignment). Get the stride and frameSize values from StreamConfiguration instead of from PixelFormatInfo. This removes the need for V4L2CameraProxy's calculation helper functions (bplMultiplier, imageSize, v4l2ToDrm, drmToV4L2, calculateSizeImage) and formats, so remove them. This also removes the need for V4L2CameraProxy::calculateSizeImage, so remove it,. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-07-10v4l2: v4l2_camera: Fix stream selection for buffer operationsPaul Elder
The buffer operations in V4L2Camera were getting the stream from the wrong place. Fix it. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2020-07-10libcamera: StreamConfiguration: Update stride documentationPaul Elder
Now that all the pipeline handlers fill in the stride information at validation time, update the documentation accordingly. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>