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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2018, Google Inc.
*
* pipeline_handler.h - Pipeline handler infrastructure
*/
#ifndef __LIBCAMERA_PIPELINE_HANDLER_H__
#define __LIBCAMERA_PIPELINE_HANDLER_H__
#include <list>
#include <map>
#include <memory>
#include <set>
#include <string>
#include <vector>
#include <libcamera/stream.h>
namespace libcamera {
class Buffer;
class BufferPool;
class Camera;
class CameraConfiguration;
class CameraManager;
class DeviceEnumerator;
class DeviceMatch;
class MediaDevice;
class PipelineHandler;
class Request;
class CameraData
{
public:
explicit CameraData(PipelineHandler *pipe)
: pipe_(pipe)
{
}
virtual ~CameraData() {}
Camera *camera_;
PipelineHandler *pipe_;
std::list<Request *> queuedRequests_;
private:
CameraData(const CameraData &) = delete;
CameraData &operator=(const CameraData &) = delete;
};
class PipelineHandler : public std::enable_shared_from_this<PipelineHandler>
{
public:
PipelineHandler(CameraManager *manager);
virtual ~PipelineHandler();
virtual bool match(DeviceEnumerator *enumerator) = 0;
MediaDevice *acquireMediaDevice(DeviceEnumerator *enumerator,
const DeviceMatch &dm);
bool lock();
void unlock();
virtual CameraConfiguration
generateConfiguration(Camera *camera, const StreamRoles &roles) = 0;
virtual int configure(Camera *camera, const CameraConfiguration &config) = 0;
virtual int allocateBuffers(Camera *camera,
const std::set<Stream *> &streams) = 0;
virtual int freeBuffers(Camera *camera,
const std::set<Stream *> &streams) = 0;
virtual int start(Camera *camera) = 0;
virtual void stop(Camera *camera);
virtual int queueRequest(Camera *camera, Request *request);
bool completeBuffer(Camera *camera, Request *request, Buffer *buffer);
void completeRequest(Camera *camera, Request *request);
protected:
void registerCamera(std::shared_ptr<Camera> camera,
std::unique_ptr<CameraData> data);
void hotplugMediaDevice(MediaDevice *media);
CameraData *cameraData(const Camera *camera);
CameraManager *manager_;
private:
void mediaDeviceDisconnected(MediaDevice *media);
virtual void disconnect();
std::vector<std::shared_ptr<MediaDevice>> mediaDevices_;
std::vector<std::weak_ptr<Camera>> cameras_;
std::map<const Camera *, std::unique_ptr<CameraData>> cameraData_;
};
class PipelineHandlerFactory
{
public:
PipelineHandlerFactory(const char *name);
virtual ~PipelineHandlerFactory() { };
virtual std::shared_ptr<PipelineHandler> create(CameraManager *manager) = 0;
const std::string &name() const { return name_; }
static void registerType(PipelineHandlerFactory *factory);
static std::vector<PipelineHandlerFactory *> &factories();
private:
std::string name_;
};
#define REGISTER_PIPELINE_HANDLER(handler) \
class handler##Factory final : public PipelineHandlerFactory \
{ \
public: \
handler##Factory() : PipelineHandlerFactory(#handler) {} \
std::shared_ptr<PipelineHandler> create(CameraManager *manager) \
{ \
return std::make_shared<handler>(manager); \
} \
}; \
static handler##Factory global_##handler##Factory;
} /* namespace libcamera */
#endif /* __LIBCAMERA_PIPELINE_HANDLER_H__ */
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