camera_manager.h

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2023, Ideas on Board Oy.
 *
 * Camera manager private data
 */

#pragma once

#include <libcamera/camera_manager.h>

#include <memory>
#include <sys/types.h>
#include <vector>

#include <libcamera/base/class.h>
#include <libcamera/base/mutex.h>
#include <libcamera/base/thread.h>
#include <libcamera/base/thread_annotations.h>

#include "libcamera/internal/process.h"

namespace libcamera {

class Camera;
class DeviceEnumerator;
class IPAManager;
class PipelineHandlerFactoryBase;

class CameraManager::Private : public Extensible::Private, public Thread
{
    LIBCAMERA_DECLARE_PUBLIC(CameraManager)

public:
    Private();

    int start();
    void addCamera(std::shared_ptr<Camera> camera) LIBCAMERA_TSA_EXCLUDES(mutex_);
    void removeCamera(std::shared_ptr<Camera> camera) LIBCAMERA_TSA_EXCLUDES(mutex_);

    IPAManager *ipaManager() const { return ipaManager_.get(); }

protected:
    void run() override;

private:
    int init();
    void createPipelineHandlers();
    void pipelineFactoryMatch(const PipelineHandlerFactoryBase *factory);
    void cleanup() LIBCAMERA_TSA_EXCLUDES(mutex_);

    /*
     * This mutex protects
     *
     * - initialized_ and status_ during initialization
     * - cameras_ after initialization
     */
    mutable Mutex mutex_;
    std::vector<std::shared_ptr<Camera>> cameras_ LIBCAMERA_TSA_GUARDED_BY(mutex_);

    ConditionVariable cv_;
    bool initialized_ LIBCAMERA_TSA_GUARDED_BY(mutex_);
    int status_ LIBCAMERA_TSA_GUARDED_BY(mutex_);

    std::unique_ptr<DeviceEnumerator> enumerator_;

    std::unique_ptr<IPAManager> ipaManager_;
    ProcessManager processManager_;
};

} /* namespace libcamera */