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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* uvcvideo.cpp - Pipeline handler for uvcvideo devices
*/
#include <libcamera/camera.h>
#include <libcamera/stream.h>
#include "device_enumerator.h"
#include "log.h"
#include "media_device.h"
#include "pipeline_handler.h"
#include "v4l2_device.h"
namespace libcamera {
LOG_DEFINE_CATEGORY(UVC)
class PipelineHandlerUVC : public PipelineHandler
{
public:
PipelineHandlerUVC(CameraManager *manager);
~PipelineHandlerUVC();
std::map<Stream *, StreamConfiguration>
streamConfiguration(Camera *camera,
std::vector<Stream *> &streams) override;
int configureStreams(Camera *camera,
std::map<Stream *, StreamConfiguration> &config) override;
bool match(DeviceEnumerator *enumerator);
private:
std::shared_ptr<MediaDevice> media_;
V4L2Device *video_;
Stream stream_;
};
PipelineHandlerUVC::PipelineHandlerUVC(CameraManager *manager)
: PipelineHandler(manager), media_(nullptr), video_(nullptr)
{
}
PipelineHandlerUVC::~PipelineHandlerUVC()
{
if (video_)
delete video_;
if (media_)
media_->release();
}
std::map<Stream *, StreamConfiguration>
PipelineHandlerUVC::streamConfiguration(Camera *camera,
std::vector<Stream *> &streams)
{
std::map<Stream *, StreamConfiguration> configs;
StreamConfiguration config{};
LOG(UVC, Info) << "TODO: Return a good default format";
configs[&stream_] = config;
return configs;
}
int PipelineHandlerUVC::configureStreams(Camera *camera,
std::map<Stream *, StreamConfiguration> &config)
{
StreamConfiguration *cfg = &config[&stream_];
LOG(UVC, Info) << "TODO: Configure the camera for resolution "
<< cfg->width << "x" << cfg->height;
return 0;
}
bool PipelineHandlerUVC::match(DeviceEnumerator *enumerator)
{
DeviceMatch dm("uvcvideo");
media_ = std::move(enumerator->search(dm));
if (!media_)
return false;
media_->acquire();
for (MediaEntity *entity : media_->entities()) {
if (entity->flags() & MEDIA_ENT_FL_DEFAULT) {
video_ = new V4L2Device(*entity);
break;
}
}
if (!video_ || video_->open()) {
if (!video_)
LOG(UVC, Error) << "Could not find a default video device";
media_->release();
return false;
}
std::vector<Stream *> streams{ &stream_ };
std::shared_ptr<Camera> camera = Camera::create(this, media_->model(), streams);
registerCamera(std::move(camera));
hotplugMediaDevice(media_.get());
return true;
}
REGISTER_PIPELINE_HANDLER(PipelineHandlerUVC);
} /* namespace libcamera */
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