request.h

Go to the documentation of this file.

/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * Request class private data
 */
 
#pragma once
 
#include <chrono>
#include <map>
#include <memory>
#include <stdint.h>
#include <unordered_set>
 
#include <libcamera/base/event_notifier.h>
#include <libcamera/base/timer.h>
 
#include <libcamera/request.h>
 
using namespace std::chrono_literals;
 
namespace libcamera {
 
class Camera;
class FrameBuffer;
 
class Request::Private : public Extensible::Private
{
    LIBCAMERA_DECLARE_PUBLIC(Request)
 
public:
    Private(Camera *camera);
    ~Private();
 
    Camera *camera() const { return camera_; }
    bool hasPendingBuffers() const;
 
    ControlList &metadata() { return metadata_; }
 
    bool completeBuffer(FrameBuffer *buffer);
    void complete();
    void cancel();
    void reset();
 
    void prepare(std::chrono::milliseconds timeout = 0ms);
    Signal<> prepared;
 
private:
    friend class PipelineHandler;
    friend std::ostream &operator<<(std::ostream &out, const Request &r);
 
    void doCancelRequest();
    void emitPrepareCompleted();
    void notifierActivated(FrameBuffer *buffer);
    void timeout();
 
    Camera *camera_;
    bool cancelled_;
    uint32_t sequence_ = 0;
    bool prepared_ = false;
 
    std::unordered_set<FrameBuffer *> pending_;
    std::map<FrameBuffer *, EventNotifier> notifiers_;
    std::unique_ptr<Timer> timer_;
    ControlList metadata_;
};
 
} /* namespace libcamera */