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libcamera: v4l2_device: Add MediaEntity contructor

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Construct a V4L2Device from a MediaEntity device node path. While at
there mark constructor as explicit to avoid copy-construction.

Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
This commit is contained in:
Jacopo Mondi 2019-01-21 13:18:48 +01:00
parent f5e48ebf44
commit d18d25bde3
2 changed files with 15 additions and 1 deletions
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4
src/libcamera/include/v4l2_device.h
View file

@ -32,10 +32,12 @@ struct V4L2Capability final : v4l2_capability {
bool hasStreaming() const { return capabilities & V4L2_CAP_STREAMING; }
};
class MediaEntity;
class V4L2Device
{
public:
V4L2Device(const std::string &devnode);
explicit V4L2Device(const std::string &devnode);
explicit V4L2Device(const MediaEntity &entity);
V4L2Device(const V4L2Device &) = delete;
~V4L2Device();

12
src/libcamera/v4l2_device.cpp
View file

@ -12,6 +12,7 @@
#include <unistd.h>
#include "log.h"
#include "media_object.h"
#include "v4l2_device.h"
/**
@ -94,6 +95,17 @@ V4L2Device::V4L2Device(const std::string &devnode)
{
}
/**
* \brief Construct a V4L2Device from a MediaEntity
* \param entity The MediaEntity to build the device from
*
* Construct a V4L2Device from a MediaEntity's device node path.
*/
V4L2Device::V4L2Device(const MediaEntity &entity)
: V4L2Device(entity.devnode())
{
}
V4L2Device::~V4L2Device()
{
close();