request.h

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/* 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 <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;

    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 *, std::unique_ptr<EventNotifier>> notifiers_;
    std::unique_ptr<Timer> timer_;
};

} /* namespace libcamera */