Add a function to the MediaLink class to set the state of a link to
enabled or disabled. The function makes use of an internal MediaDevice
method, which is defined private and only accessible by the MediaLink
setEnabled() function itself.
Also add to MediaDevice a function to reset all links registered in the
media graph.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Add three overloaded functions 'link()' to retrieve a link between two
pads. Each overloaded implementation exposes a different method to
identify the source and sink pads.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Add a MediaDevice member field to the MediaObject class hierarcy.
Each media object now has a reference to the media device it belongs to,
and which it has been created by.
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Provide a poll-based event dispatcher implementation as convenience for
applications that don't need a custom event loop. The poll-based
dispatcher is automatically instantiated if the application doesn't
provide its own dispatcher.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
The system libraries define macro's for major/minor through
<sys/types.h> on some versions of GCC/GLibc.
To prevent namespace collisions with these macros, rename our major and
minor device node accessors.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Replace usage of the DeviceInfo class with MediaDevice in the
DeviceEnumerator and remove the DeviceInfo class.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Extend the MediaEntity object with device node major and minor numbers,
and retrieve them from the media graph using interfaces. They will be
used by the DeviceEnumerator to retrieve the devnode path.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Most errors recorded during graph parsing are logged but not propagated
to the caller. Fix this and delete objects that are created but not
successfully added to the graph to avoid memory leaks. As the error code
returned from the addObject() and populate*() functions doesn't matter
much, turn them into bool functions.
Additionally, add a way to query whether the media graph was valid, and
clear objects before populating the graph to avoid leaking them.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
The MediaDevice object implements handling and configuration of the media
graph associated with a media device.
The class allows enumeration of all pads, links and entities registered in
the media graph.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Add a class hierarcy to represent all media objects a media graph represents.
Add a base MediaObject class, which retains the global unique object id,
and define the derived MediaEntity, MediaLink and MediaPad classes.
This hierarchy will be used by the MediaDevice objects which represents and
handles the media graph.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Provide a factory for DeviceEnumerator objects. Depending on which
libraries are available there will be different ways to enumerate
information in the system. This factory hides this from the rest of the
library.
Currently udev enumeration is the only supported implementation, a sysfs
implementation is another method that surely will be added in the
future.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Provide a DeviceEnumerator base class which enumerates all media devices
in the system and information about them, resolving Media Controller
data structures to paths and a method to search in all the enumerated
information.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Provide a DeviceMatch class which represents all properties of a media
device a pipeline hander can specify when searching for a device to use
in its pipeline.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Provide a DeviceInfo class which holds all information from the initial
enumeration of a media device. Not all information available at a media
device is stored, only the information needed for a pipeline handler to
find a specific device.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Many of the message logged by the library will be debug messages, we
thus need a debug log level.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
The logger is based on the ostream API, allowing code to log messages in
a native way. It automatically logs the time stamp, severity level, file
name and line number.
Many important features are missing, such as logging to file, logging
classes, and log filtering based on the severity level, file name and
class.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
In order to match the directory structure of traditional projects,
rename the top-level lib/ directory to src/libcamera/. Other libraries
developed as part of the project will later find a home in src/.
Split the libcamera header files in three categories: public headers
describing the public API in include/libcamera/, internal headers
describing the internal API in src/libcamera/include/, and private
headers local to one or a small number of compilation units along the
corresponding .cpp files. As no internal header exists yet the
src/libcamera/include/ directory is created empty as the build system
would fail otherwise.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
