lccv.hpp

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#pragma once
 

 
 // LCCV is a simple C++ wrapper that allows capturing photos or video from a camera
 // handled by the libcamera library. Captured frames are provided as OpenCV cv::Mat
 // objects for easy post-processing.
 
 /* SPDX-License-Identifier: BSD-2-Clause */
 /*
  * Copyright (C) 2020-2021 Raspberry Pi (Trading) Ltd.
  *
  * libcamera_app.hpp - Base class for libcamera apps.
  * options.hpp       - Common program options.
  */
 
  /*
   * Based on LCCV (BSD 2-Clause License)
   * Original Copyright (c) 2023 <https://github.com/kbarni/LCCV>
   *
   * Modifications Copyright (c) 2025 Levent
   */
 
 
#include <mutex>
#include <atomic>
#include <pthread.h>
#include <opencv2/opencv.hpp>
 
#include "libcamera_app.hpp"
#include "libcamera_app_options.hpp"
 
class PiCamera {
public:
    PiCamera();
    ~PiCamera();
 
    Options* options;
 
    //Photo mode
    bool startPhoto();
    bool capturePhoto(cv::Mat& frame);
    bool stopPhoto();
 
    //Video mode
    bool startVideo();
    bool getVideoFrame(cv::Mat& frame, unsigned int timeout);
    void stopVideo();
 
    //Applies new zoom options. Before invoking this func modify options->roi.
    void ApplyZoomOptions();
 
    // custom settings 
    void SetExposure(const float& value);
    void SetAwbEnable(const bool& enable);
 
protected:
    LibcameraApp* app;
    void getImage(cv::Mat& frame, CompletedRequestPtr& payload);
    static void* videoThreadFunc(void* p);
    pthread_t videothread;
    unsigned int still_flags;
    unsigned int vw, vh, vstr;
    std::atomic<bool> running, frameready;
    uint8_t* framebuffer;
    std::mutex mtx;
    bool camerastarted;
};