| Age | Commit message (Collapse) | Author |
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With the upcoming FrameBuffer API a new library wide FrameMetadata
object will be added which will replace the specific implementation in
the V4L2 compatibility layer.
Avoid name collisions while the new FrameBuffer API is added by renaming
the V4L2 compatibility layer specific implementation until it can be
replaced with the library wide implementation.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Add a helper to make it easier to pass file descriptors around. The
helper class duplicates the fd which decouples it from the original fd
which could be closed by its owner while the new FileDescriptor remains
valid.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The association of buffers to a request can be done directly in
addBuffer() instead of when the request is queued to the camera. Keep
the check that a request contains buffers by moving it to
Camera::queueRequest() where prepare() was previously called.
As a bonus we can remove a friend statement in Request.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Refactoring of the camera_proxy have left the 'ret' variable undeclared,
declare it.
../../src/v4l2/v4l2_camera_proxy.cpp:273:2: error: use of undeclared identifier 'ret'
ret = vcam_->invokeMethod(&V4L2Camera::configure,
^
../../src/v4l2/v4l2_camera_proxy.cpp:278:6: error: use of undeclared identifier 'ret'
if (ret < 0)
Fixes: fce110c6d961c3bb ("v4l2: camera_proxy: Break out try_fmt")
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Acked-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Most of the ioctl handlers in the V4L2CameraProxy class have an empty
line between the tracing printouts and the immediately following buffer
type validation. Align the two occasions where such an empty line is missing
with the others.
Cosmetic change only.
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Calling vidioc_s_fmt() calls vidioc_try_fmt() duplicating prinouts.
Breakout try format procedure and call it from both functions.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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The set pixelformat field of struct v4l2_pix_format structure was
wrongly converted to PixelFormat by calling v4l2ToDrm(), with an already
converted 'format' argument.
Fix this by calling the right drmToV4l2() conversion function.
Fixes: 0ce8f2390b52 ("v4l2: v4l2_compat: Add V4L2 compatibility layer")
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Commit 29c5508075c1 ("v4l2: camera_proxy: Create format info array")
introduced usage of the std::array template class, but didn't include
the corresponding header. This may cause a compilation breakage in the
future if the indirect include of <array> disappears due to unrelated
changes. Fix it.
Fixed: 29c5508075c1 ("v4l2: camera_proxy: Create format info array")
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Create a PixelFormatInfo structure to store information about a format,
and add a global array of format info for all the formats currently
supported. Move the format helpers to use the information from the
array.
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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To clarify code, adopt the following rules for format helpers:
- All variables representing V4L2 pixel formats shall use uint32_t
- All variables representing DRM pixel formats shall use PixelFormat
- Functions returning positive values only shall not have a signed
return type
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Create a new FileOperations structure to hold all the dynamically-loaded
C library file operations. The file operations are now exposed publicly,
to prepare for usage of mmap in the V4L2CameraProxy.
A new template helper function is added to retrieve a symbol with
dlsym() with proper casting to simplify the V4L2CompatManager
constructor.
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>
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Now that Object::invokeMethod() supports returning a value, use it and
drop the return value method argument.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Propagate the return value of the bound method all the way to the caller
of activate(). The value is stored in the arguments pack for indirect
invocation.
As C++ doesn't allow instantiating a variable of type void, we need to
specialize the template class BoundMethodPack for methods returning
void. This in turn requires template specialization for the
BoundMethodArgs class in order to store the return value in the pack,
and for the BoundMemberMethod class to extract the return value from the
pack.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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The bound method arguments pack will need to be accessed by the method
invoker in order to retrieve the method return value when using a
blocking connection type. We thus can't delete the pack unconditionally
in the bound method target thread. We also can't delete it
unconditionally in the invoker's thread, as for queued connections the
pack will be used in the target thread after the invoker completes.
This shows that ownership of the arguments pack is shared between two
contexts. As a result, manage it using std::shared_ptr<>.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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The bound method implementation is restricted to binding to void methods
as return values are not supported. This complicates usage of bound
methods, as non-void methods used a slots or Object::invokeMethod()
targets need to be wrapped in a void method. Simplify this by supporting
arbitrary return types and ignoring the return value.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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When BoundMethodBase::activatePack() is called with the connection type
set to ConnectionTypeDirect, the method isn't deleted even if
deleteMethod is true, as is the case when called from
Object::invokeMethod(). This causes a memory leak. Fix it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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The ControlSerializer::serial_ member variable isn't initialized. Add a
constructor to the class to initialize it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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IPCUnixSocket::send() sends a IPCUnixSocket::Header allocated on the
stack. All the fields of the header are initialized, but the padding
bytes are not. This results in random data being sent over the UNIX
socket, potentially leaking information.
Fix this by initializing the whole header to 0.
Fixes: 13dd7a01ecbe ("libcamera: ipc: unix: Add a IPC mechanism based on Unix sockets")
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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The __open_2() and __openat_2() functions are defined by glibc as taking
2 and 3 arguments respectively, with variadic arguments for the file
mode as open() and openat() do. The V4L2 compatibility layer defines
them as aliases for open() and openat(), which results in compilation
failures with gcc:
../../src/v4l2/v4l2_compat.cpp: In function ‘int __openat_2(int, const char*, int)’:
../../src/v4l2/v4l2_compat.cpp:58:14: error: invalid conversion from ‘int’ to ‘const char*’ [-fpermissive]
58 | return open(dirfd, path, oflag);
| ^~~~~
| |
| int
../../src/v4l2/v4l2_compat.cpp:31:39: note: initializing argument 1 of ‘int open(const char*, int, ...)’
31 | LIBCAMERA_PUBLIC int open(const char *path, int oflag, ...)
| ~~~~~~~~~~~~^~~~
../../src/v4l2/v4l2_compat.cpp:58:21: error: invalid conversion from ‘const char*’ to ‘int’ [-fpermissive]
58 | return open(dirfd, path, oflag);
| ^~~~
| |
| const char*
../../src/v4l2/v4l2_compat.cpp:31:49: note: initializing argument 2 of ‘int open(const char*, int, ...)’
31 | LIBCAMERA_PUBLIC int open(const char *path, int oflag, ...)
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Fix this by defining the two functions as wrappers around open() and
openat() without variadic arguments.
Fixes: 0ce8f2390b52 ("v4l2: v4l2_compat: Add V4L2 compatibility layer")
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Add libcamera V4L2 compatibility layer.
This initial implementation supports the minimal set of V4L2 operations,
which allows getting, setting, and enumerating formats, and streaming
frames from a video device. Some data about the wrapped V4L2 video
device are hardcoded.
Add a build option named 'v4l2' and adjust the build system to
selectively compile the V4L2 compatibility layer.
For now we match the V4L2 device node to a libcamera camera based on a
devnum that a pipeline handler may optionally map to a libcamera
camera.
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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Register all UVC Cameras along with their device numbers, to eventually
allow the V4L2 compatibility layer to match against 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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device numbers
The V4L2 compatibility layer will need a way to map device numbers to
libcamera Camera instances. Expose a method in the camera manager to
retrieve Camera instances by devnum. The mapping from device numbers to
Camera instances is optionally declared by pipeline handlers when they
register cameras with the camera manager.
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 are preparing to integrate the V4L2 adaptation layer, which will
intercept open() calls (among others) via LD_PRELOAD. To prevent
libcamera's own open() calls from being intercepted, replace them with a
direct syscall.
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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strlcpy is available in libbsd, bionic, musl, and ulibc, but not in glibc.
Instead of checking for strlcpy availability and modifying dependencies,
implement it in utils, as a wrapper around strncpy.
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Commit e441f2c7f46d ("libcamera: pipeline: uvcvideo: Add controls
support") broke handling of UVC devices without a default entity by
turning the error check into an always false check. Fix it.
Fixes: e441f2c7f46d ("libcamera: pipeline: uvcvideo: Add controls support")
Signed-off-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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The buffer index is a V4L2 concept that will be hidden from users with
the introduction of a new FrameBuffer class. In preparation for this,
remove the index from log messages.
Keep and move one debug log message where the index is available as the
V4L2 buffer is being dequeued for the video device and it's useful when
debugging.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Expecting pipeline handler implementations of queueRequest() to call
the base class queueRequest() at the correct point have led to different
behaviors between the pipelines.
Fix this by splitting queueRequest() into a base class implementation
which handles the bookkeeping and a new queueRequestDevice() that is
to be implemented by pipeline handlers and only deals with committing the
request to the device.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Object instances receive messages dispatched from the event loop of the
thread they belong to. Deleting an object from a different thread is
thus dangerous, unless the caller ensures that no message delivery is in
progress. Document this in the Object class documentation.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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The Object class stores the number of pending messages that have been
posted for it, while the actual messages are stored in a per-thread list
in the ThreadData class. When dispatching messages, the message is
removed from the list, passed to the receiver, and the number of pending
messages is updated.
In order to avoid too much contention on the list lock, the lock is
dropped to pass the message to the receiver and then taken again. This
creates a race condition window with Thread::removeMessages(), as the
number of pending messages for a receiver is briefly out of sync with
the pending messages list. The assertion at the end of removeMessages()
thus sometimes fails.
Fix this by decrementing the pending messages counter before releasing
the lock in Thread::dispatchMessages(). This fixes the slow message
receiver test in MessageTest.
Fixes: 01b930964acd ("libcamera: thread: Add a messaging passing API")
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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When moving an Object to a Thread, messages posted for the object are
move to the target thread's message queue. This requires locking the
message queues of the current and target threads, as the target thread
may (and is usually) running. The implementation is faulty as it locks
the thread data instead of the message queue. This creates a race
condition with a tiny but exploitable time window.
The issue was noticed by the event-thread test rarely but reproducibly
failing with the following assertion error:
[1:39:33.850878042]FATAL default thread.cpp:440 assertion "data_ == receiver->thread()->data_" failed
The issue only occurred when libcamera was compiled in release mode,
further hinting of a race condition.
Fixes: 01b930964acd ("libcamera: thread: Add a messaging passing API")
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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When a fatal error occurs the program aborts, and all the logger
provides is the location of the line that caused the error. Extend this
with a full backtrace to help debugging.
The backtrace is generated using the backtrace() call, a GNU extension
to the C library. It is available in glibc and uClibc but not in musl.
Test for availability of the function to condition compilation of the
backtrace printing. Implementing backtrace support with musl is an
exercise left to the reader if desired.
The LogOutput class is extended to support writing string messages
directly to the output. Strings written directly will be considered as
LogDebug messages when written to the Syslog.
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>
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gcc 8 and 9 complain about the OptionValue::integer_ member being
possibly used initialized when compiled in release mode. I haven't been
able to find where this could be the case, and the compiler error
message isn't helpful:
In file included from ../../src/cam/options.cpp:14:
../../src/cam/options.h: In member function ‘bool OptionsBase<T>::parseValue(const T&, const Option&, const char*) [with T = std::__cxx11::basic_string<char>]’:
../../src/cam/options.h:84:7: error: ‘<anonymous>.OptionValue::integer_’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
class OptionValue
^~~~~~~~~~~
../../src/cam/options.h: In member function ‘bool OptionsBase<T>::parseValue(const T&, const Option&, const char*) [with T = int]’:
../../src/cam/options.h:84:7: error: ‘<anonymous>.OptionValue::integer_’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
class OptionValue
^~~~~~~~~~~
Furthermore valgrind doesn't report any issue. This is likely a false
positive, but fix it nonetheless as the fix is cheap.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Oxford English spells "serialize", not "serialise". Fix it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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When an IPA module is loaded without isolation and implements the
IPAInterface internally, going through ipa_context_ops is a waste of
time. Add an operation to retrieve the IPAInterface, and use it directly
in the IPAContextWrapper.
For debugging purpose, make it possible to forcing usage of the C API by
defining the LIBCAMERA_IPA_FORCE_C_API environment variable.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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IPA modules have to implement a public ipaCreate() function, but its
prototype isn't declared in any header file. This allows for modules to
get the prototype wrong without being warned by the compiler. Fix 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>
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Switch IPA communication to the plain C API. As the IPAInterface class
is easier to use for pipeline handlers than a plain C API, retain it and
add an IPAContextWrapper that translate between the C++ and the C APIs.
On the IPA module side usage of IPAInterface may be desired for IPAs
implemented in C++ that want to link to libcamera. For those IPAs, a new
IPAInterfaceWrapper helper class is introduced to wrap the IPAInterface
implemented internally by the IPA module into an ipa_context,
ipa_context_ops and ipa_callback_ops.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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The C++ objects that are expected to convey data through the IPA API
will have associated methods that would require IPAs to link to
libcamera. Even though the libcamera license allows this, suppliers of
closed-source IPAs may have a different interpretation. To ease their
mind and clearly separate vendor code and libcamera code, define a plain
C IPA API. The corresponding C objects are stored in plain C structures
or have their binary format documented, removing the need for linking to
libcamera code on the IPA side.
The C API adds three new C structures, ipa_context, ipa_context_ops and
ipa_callback_ops. The ipa_context_ops and ipa_callback_ops contain
function pointers for all the IPA interface methods and signals,
respectively. The ipa_context represents a context of operation for the
IPA, and is passed to the IPA oparations. The IPAInterface class is
retained as it is easier to use than a plain C API for pipeline
handlers, and wrappers will be developed to translate between the C and
C++ APIs.
Switching to the C API internally will be done in a second step.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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The IPAInterface::configure() operation receives a map of ControlInfoMap
instances. Pass const references instead to avoid copies when not
required (the callee can still make manual copies), and to allow for the
future serialization layer to keep references to the original object.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Add a new ControlSerializer helper to serialize and deserialize
ControlInfoMap and ControlList instances. This will be used to implement
the C IPA protocol and the communication with IPA through IPC.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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The ByteStreamBuffer class wraps a memory area, expected to be allocated
by the user of the class and provides operations to perform sequential
access in read and write modes.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Define data structures to be used during interaction between IPA modules
and pipeline handlers to serialize control lists and control info maps.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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In order to inspect planes of a const Buffer, add a const accessor.
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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V4L2 controls of type V4L2_CTRL_TYPE_BOOLEAN are incorrectly described
with a ControlRange of int32_t values. Fix 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>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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ControlInfoMap requires the ControlId and ControlRange of each entry to
have identical types. Check for this and log an error if a mismatch is
detected.
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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Store a reference to the ControlInfoMap used to create a ControlList and
provide an operation to retrieve it. This will be used to implement
serialization of ControlList.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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We need to construct empty ControlList objects to serialization. Make
the constructor public.
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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The ControlInfoMap class has a move assignment operator from a plain
map, but no corresponding move constructor. Add one.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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In preparation for serialization, index the ControlList by unsigned int.
This will allow deserializing a ControlList without requiring external
information.
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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Allow comparision of control ranges by adding the required operators.
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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The ControlInfoMap count() and find() methods use at() to lookup the
control numerical ID in the idmap_. This causes an exception to be
thrown if the ID doesn't exist in the map. Fix it by using the find()
method instead in find(), and rely on idmap_.count() in count().
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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