camera.h

/****************************************************************************
 * Copyright (c) 2014, Joel Kivelä, Erkki Koskenkorva, Oskari Leppäaho,
 * Mika Lehtinen and Petri Partanen.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the copyright holders nor the names of its
 *       contributors may be used to endorse or promote products derived from
 *       this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
****************************************************************************/
#ifndef CAMERA_H
#define CAMERA_H

#include <cassert>
#include <memory>
#include <string>
#include <list>

#include "captureinterface.h"
#include "recorder.h"
#include "source.h"

namespace cavapa_gui
{
class Camera : public Source
{
public:
    Camera(SourceID desired_id = UNDEFINED_SOURCE) : Source(desired_id) {}

    virtual ~Camera() { stop(); }

    DISALLOW_COPY_AND_ASSIGN(Camera);

    bool canRecord() const override { return true; }

    FrameCapture get(FrameTime passed_time) override;

    double getBarrelCorrection() override
        { return source == nullptr ? 0.0 : source->getBarrelCorrection(); }

    static std::string getCodec() { return recorder_codec; }

    static double getDefaultFPS() { return frames_per_second; }

    std::string getDescription() const override
        { return source == nullptr ? "" : source->getDescription(); }

    int getDeviceID() const
        { return source == nullptr ? UNKNOWN_DEVICE : source->getDeviceID(); }

    double getFramerate() const override;

    FrameTime getPosition() const override final { return 0; }

    std::vector<std::string> getRecordings() const;

    cv::Size getResolution() const override
        { return source == nullptr ? cv::Size(0, 0) : source->getResolution(); }

    SourceType getSourceType() const override;

    SourceStats getStats() override;

    bool hasNew() override { return true; }

    bool open(int index);

    bool open(const std::string& url);

    bool isOpen() const override
        { return source == nullptr ? false : source->isOpen(); }

    bool isPlaying() const override { return true; }

    bool record(const std::string& filename,
                const std::string& codec = "") override;

    void setBarrelCorrection(double amount) override;

    static bool setCodec(const std::string &codec);

    static void setDefaultFPS(double fps) { frames_per_second = fps; }

    bool setResolution(const cv::Size &new_size) override;

    void stop() override;

private:
    static FrameTime getFrameDifference()
        { return static_cast<FrameTime>(1000.0 / frames_per_second); }

    inline void pushToRecorder(const FrameCapture& capture,bool repush = false);

    static std::string recorder_codec;  // Codec to use for new recordings
    static double frames_per_second;    // Framerate to use for new recordings

    int record_timer = 0;
    std::unique_ptr<Recorder> recorder = nullptr; // File recorder.
    std::vector<std::string> recorded_files;      // List of recorded files.
    std::unique_ptr<CaptureInterface> source = nullptr; // Capturing device.
};
} // namespace

#endif // CAMERA_H