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buffer_handle_t doesn't provide sufficient info to map a buffer
properly. cros::CameraBufferManager enables handling the buffer on
ChromeOS, but no way is provided for other platforms.
Therefore, we put the assumption that planes are in the same buffer
and they are consecutive. This modifies the way of mapping in
generic_camera_buffer with the assumption.
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>
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The Extensible constructor takes a pointer to a Private instance, whose
lifetime it then manages. Make this explicit in the API by passing the
pointer as a std::unique_ptr<Private>.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
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Remove the need for callers to reference PROT_READ/PROT_WRITE directly
from <sys/mman.h> by instead exposing the Read/Write mapping options as
flags from the MappedFrameBuffer class itself.
While here, introduce the <stdint.h> header which is required for the
uint8_t as part of the Plane.
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The MappedFrameBuffer is a convenience feature which sits on top of the
FrameBuffer and facilitates mapping it to CPU accessible memory with
mmap.
This implementation is internal and currently sits in the same internal
files as the internal FrameBuffer, thus exposing those internals to
users of the MappedFramebuffer implementation.
Move the MappedFrameBuffer and MappedBuffer implementation to its own
implementation files, and fix the sources throughout to use that
accordingly.
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Remove leftover inclusions of the sys/mman header file.
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Usage of 'method' to refer to member functions comes from Java. The C++
standard uses the term 'function' only. Replace 'method' with 'function'
or 'member function' through the whole code base and documentation.
While at it, fix two typos (s/backeng/backend/).
The BoundMethod and Object::invokeMethod() are left as-is here, and will
be addressed separately.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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cameraBuffer function in private constructor is unused.
Mark it as such.
Fixes: 33dd4fab9d39("libcamera: base: class: Don't pass Extensible pointer to Private constructor")
Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
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>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Propagate the requested test pattern mode to libcamera::Camera
through libcamera::Request and also set the android metadata to
the test pattern mode contained by the complete Request.
Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Nautilus has two in-built cameras, one UVC and one attached to IPU3.
Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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Currently, all UVC cameras are reported with CameraLocationExternal [1]
by libcamera-core since there is no universal information or standard,
to know the location of these cameras. However, in the libcamera HAL
layer, we can make an informed decision whether it's external or
internal, simply by checking its presence in the HAL configuration
file.
The CameraHalManager will now assign the numerical id of the camera
accordingly when initializing the CameraDevice, based on the camera
facing value set in the HAL config file.
[1] 76809320bb1a ("libcamera: pipeline: uvcvideo: Treat all UVC cameras
as external")
Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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Error out on any camera's location if set to "external", in the HAL
configuration file. The HAL configuration file is meant to override the
location property, and overriding an internal camera location to
external doesn't make sense.
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>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
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Currently CameraDevice wrapper is created first and then HAL config
validity is checked. If the validity checks fail, the code path will
simply return, in which case, creating CameraDevice seems a futile
exercise.
This patch defers the creation of CameraDevice wrapper until the HAL
config validity is checked for internal cameras. This will also enable
us to infer a few things beforehand, by reading the config file before
creating the CameraDevice wrapper.
Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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The Extensible and Extensible::Private classes contain pointers to each
other. These pointers are initialized in the respective class's
constructor, by passing a pointer to the other class to each
constructor. This particular construct reduces the flexibility of the
Extensible pattern, as the Private class instance has to be allocated
and constructed in the members initializer list of the Extensible
class's constructor. It is thus impossible to perform any operation on
the Private class between its construction and the construction of the
Extensible class, or to subclass the Private class without subclassing
the Extensible class.
To make the design pattern more flexible, don't pass the pointer to the
Extensible class to the Private class's constructor, but initialize the
pointer manually in the Extensible class's constructor. This requires a
const_cast as the o_ member of the Private class is const.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
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Add a MaxLatency control, and plumb it into the HAL accordingly.
Bug: https://bugs.libcamera.org/show_bug.cgi?id=50
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
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Add skeletal still and manual request templates so that we can expand
them for FULL support.
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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We need to be able to add additional characteristics/request/result keys
into the corresponding list in the static metadata based on libcamera
camera capabilities. We also need to be able to easily check if the
lists have specific keys, for populating templates and result metadata.
Turn the characteristics, requests, and results keys vectors into sets,
and move them to member variables to achieve this.
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Add helpers for setting android metadata from libcamera controls.
There are two versions, for scalars and collections, both of which take
a default value to fill in the android control if the libcamera control
is not found. They both return the value that was set.
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Add the infrastructure for checking and reporting capabilities. Use
these capabilities to determine the hardware level as well.
Bug: https://bugs.libcamera.org/show_bug.cgi?id=55
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The data for the exif ISO tag needs to come from SENSOR_SENSITIVITY. Set
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>
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Since we set entries with android tags directly, which are enums and not
arithmetic types, the addEntry template fails to match. Fix this by also
allowing enum values in addEntry.
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Add convenience functions for checking if an entry is present in a
CameraMetadata instance, and to check if an array entry includes a
specific value.
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The validation of RAW stream support is performed in two different
places:
- At initializeStreamConfigurations() time, by verifying that the
libcamera format associated with HAL_PIXEL_FORMAT_BLOB is a Raw format
and ensuring the Camera successfully validates it
- As initializeStaticMetadata() time by generating a CameraConfiguration
for the Raw stream role and ensuring it is a Raw format with a 16 bit
depth
The first check is used to build the list of supported Raw stream
resolutions. The latter is used to register the
ANDROID_REQUEST_AVAILABLE_CAPABILITIES_RAW capability.
As building the list of supported Raw streams doesn't serve any
purpose if the RAW capability is not registered, centralize the Raw
format support verification at initializeStreamConfigurations() time by
ensuring the supported format is a Raw one with a 16 bit depth.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The getYUVResolutions() and getRawResolutions() functions are called
from the initializeStreamConfigurations() function, which is called by
initialize().
Rationalize the function naming scheme by renaming the two functions to
initializeYUVResolutions() and initializeRawResolution().
Cosmetic change only.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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When building the list of supported YUV streams in getYUVResolutions()
the CameraConfiguration provided by the caller as first parameters is used.
As the CameraConfiguration will be later actually applied to the Camera,
avoid any possible overlap of the configuration parameters by using a
throw-away CameraConfiguration generated for the Viewfinder stream role
in getYUVResolutions().
It's also nicer to avoid having two functions with a similar purpose
such as getYUVResolutions() and getRawResolutions() with different
parameter lists, as the presence of a CameraConfiguration as first
parameter might be confusing to the reader.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
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Now that all Extensible classes expose a _d() function that performs
appropriate casts, the LIBCAMERA_D_PTR brings no real additional value.
Replace it with direct calls to the _d() function.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
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libcamera names header files based on the classes they define. The
buffer.h file is an exception. Rename it to framebuffer.h.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Instances of the CameraDevice class should never be copied or moved, as
they represent resources, Disable copying and moving for the class.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
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The CameraHalManager should be instantiated once only, and never copied
or moved. Disable copying and moving.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
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Commit 7532caa2c77b ("android: camera_device: Reset config_ if
Camera::configure() fails") reworked the configuration sequence to
ensure that the CameraConfiguration pointers gets reset when
configuration fails. This inadvertently causes a null pointer
dereference, as the CameraStream constructor accesses the camera
configuration through CameraDevice::cameraConfiguration() before the
internal config_ pointer is set.
Fix this by passing the configuration pointer explicitly to the
CameraStream constructor.
Fixes: 7532caa2c77b ("android: camera_device: Reset config_ if Camera::configure() fails")
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Tested-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Tested-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
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processCaptureRequest()
Add a check on processCaptureRequest() if a given capture
request contains a camera stream that has been configured.
Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The CameraBuffer::Private::planeAddr() functions are declared but not
defined (and of course not used). Drop them.
Fixes: d8d6a78f223e ("android: Introduce Chromium OS buffer manager")
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
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The config_ pointer is reset in all error paths of the
CameraDevice::configureStreams() function, except when
Camera::configure() fails. Fix it by using a local unique pointer to
store the configuration until the end of the function, to avoid similar
issues in the future.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
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Headers which must not be exposed as part of the public libcamera API
should include base/private.h.
Any interface which includes the private.h header will only be able to
build if the libcamera_private dependency is used (or the
libcamera_base_private dependency directly).
Build targets which are intended to use the private API's will use the
libcamera_private to handle the automatic definition of the inclusion
guard.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Move span, and adjust the Doxygen exclusion as well.
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Move the functionality for the following components to the new
base support library:
- BoundMethod
- EventDispatcher
- EventDispatcherPoll
- Log
- Message
- Object
- Signal
- Semaphore
- Thread
- Timer
While it would be preferable to see these split to move one component
per commit, these components are all interdependent upon each other,
which leaves us with one big change performing the move for all of them.
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Move the class support infrastructure to the base library.
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Move the utils functionality to the libcamera/base library.
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The ChromeOS specific Android HAL support was overly-complex to support
linking an additional library, and then passing the built object into
the libcamera.so build.
Now that it has its own distinct libcamera-hal.so, simplify the CrOS
integration to build directly into that library.
The removal of the -Wno-shadow here is intentional, as it is not
required for compilation of the camera3_hal.o object.
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The libcamera Android HAL implementation should not be an integral part
of libcamera, but a support library that utilises the libcamera public
API.
Move the implementation to its own distinct library.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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CameraBuffer::plane() should be accessed in zero based index.
Fix the wrong indexing in CameraBuffer::plane() in
cros_camera_buffer.cpp.
Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
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The camera_device.cpp has grown a little too much, and it has quickly
become hard to maintain. Break out the handling of the static
information collected at camera initialization time to a new
CameraCapabilities class.
Break out from the camera_device.cpp file all the functions related to:
- Initialization of supported stream configurations
- Initialization of static metadata
- Initialization of request templates
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Acked-by: Paul Elder <paul.elder@ideasonboard.com>
Tested-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
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Sort the list of the Android HAL source file alphabetically.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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There were some CameraMetadata calls that were left in the old version.
Update them.
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
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HAL_PIXEL_FORMAT_RAW_OPAQUE is requested only for
Zero-Shutter-Lag (ZSL). ZSL requires RAW and YUV reprocessing.
Since either of them is not supported by libcamera, supporting
RAW_OPAQUE format doesn't make sense. Drop the format from the
supported format list.
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>
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Report to the Android camera stack the list of supported test
pattern modes constructed by inspecting the values reported
by libcamera through the controls::draft::TestPatternMode control.
Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Implement the flush() camera operation in the CameraDevice class
and make it available to the camera framework by implementing the
operation wrapper in camera_ops.cpp.
Introduce a new camera state State::Flushing to handle concurrent
flush() and process_capture_request() calls.
As flush() can race with processCaptureRequest() protect it
by introducing a new State::Flushing state that
processCaptureRequest() inspects before queuing the Request to the
Camera. If flush() is in progress while processCaptureRequest() is
called, return the current Request immediately in error state. If
flush() has completed and a new call to processCaptureRequest() is
made just after, start the camera again before queuing the request.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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With the introduction of an additional mutex class member, the name of
the existing one is too generic.
Rename CameraDevice::mutex_ in CameraDevice::descriptorsMutex_ and use the
libcamera provided libcamera::Mutex type to align the style with the
rest of the code base.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Guard access to the camera state and the start/stop sequences
with a mutex.
Currently only stop() and the first call to processCaptureRequest()
start and stop the camera, and they're not meant to race with each
other. With the introduction of flush() the camera can be stopped
concurrently to a processCaptureRequest() call, hence access to the
camera state will need to be protected.
Prepare for that by guarding the existing paths with a mutex.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The CameraDevice class uses std::scoped_lock<> to guard access to the
class' descriptors_ member.
std::scoped_lock<> provides a set of features that guarantees safety
when locking multiple mutexes in a critical section, while for single
locks happening in a scoped block it does not provides benefits compared
to the simplest std::unique_lock<> which libcamera provides the
MutexLocker type for.
Replace usage of std::scoped_lock<> with libcamera::MutexLocker to make
the implementation consistent with the rest of the code base.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The CameraDevice class maintains the camera state in the 'running_'
boolean flag to check if the camera has to be started at the first
received process_capture_request() call which happens after the camera
had been stopped.
So far this was correct, as the operations that change the camera
could only start or stop the camera, so a simple boolean flag
was enough.
To prepare to handle the flush() operation that will introduce a new
'flushing' state, replace the simple plain boolean flag with an
enumeration of values that define the CameraState.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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