NekoCWD/libcamera
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libcamera: ipu3: Create CIO2 V4L2 devices

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Create V4L2 devices for the CIO2 capture video nodes and associate them
with the camera they are part of.

Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
This commit is contained in:
Jacopo Mondi 2019-01-24 11:34:34 +01:00
parent a6c8f58d96
commit d3f18625bc
1 changed files with 48 additions and 0 deletions
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48
src/libcamera/pipeline/ipu3/ipu3.cpp
View file

@ -14,6 +14,8 @@
#include "log.h"
#include "media_device.h"
#include "pipeline_handler.h"
#include "utils.h"
#include "v4l2_device.h"
namespace libcamera {
@ -28,9 +30,19 @@ public:
bool match(DeviceEnumerator *enumerator);
private:
class IPU3CameraData : public CameraData
{
public:
IPU3CameraData()
: dev_(nullptr) {}
~IPU3CameraData() { delete dev_; }
V4L2Device *dev_;
};
std::shared_ptr<MediaDevice> cio2_;
std::shared_ptr<MediaDevice> imgu_;
V4L2Device *createVideoDevice(unsigned int id);
void registerCameras();
};
@ -118,6 +130,24 @@ error_release_mdev:
return false;
}
/* Create video devices for the CIO2 unit associated with a camera. */
V4L2Device *PipelineHandlerIPU3::createVideoDevice(unsigned int id)
{
std::string cio2Name = "ipu3-cio2 " + std::to_string(id);
MediaEntity *cio2 = cio2_->getEntityByName(cio2Name);
if (!cio2)
return nullptr;
V4L2Device *dev = new V4L2Device(*cio2);
if (dev->open()) {
delete dev;
return nullptr;
}
dev->close();
return dev;
}
/*
* Cameras are created associating an image sensor (represented by a
* media entity with function MEDIA_ENT_F_CAM_SENSOR) to one of the four
@ -168,6 +198,24 @@ void PipelineHandlerIPU3::registerCameras()
std::string cameraName = sensor->name() + " " + std::to_string(id);
std::shared_ptr<Camera> camera = Camera::create(this, cameraName);
/*
* If V4L2 device creation fails, the Camera instance won't be
* registered. The 'camera' shared pointer goes out of scope
* and deletes the Camera it manages.
*/
V4L2Device *videoDev = createVideoDevice(id);
if (!videoDev) {
LOG(IPU3, Error)
<< "Failed to register camera["
<< numCameras << "] \"" << cameraName << "\"";
continue;
}
IPU3CameraData *data = new IPU3CameraData();
data->dev_ = videoDev;
setCameraData(camera.get(),
std::move(std::unique_ptr<IPU3CameraData>(data)));
registerCamera(std::move(camera));
LOG(IPU3, Info)