v4l2_source.h

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//
// Copyright (c) 2025, Astute Systems PTY LTD
//
// This file is part of the VivoeX project developed by Astute Systems.
//
// Licensed under the Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
// License. See the LICENSE file in the project root for full license details.
//
 
#ifndef V4L2_V4L2_SOURCE_H_
#define V4L2_V4L2_SOURCE_H_
 
#include <fcntl.h>
#include <linux/videodev2.h>
#include <stdint.h>
#include <sys/ioctl.h>
#include <unistd.h>
 
#include <iostream>
#include <string>
 
class V4L2Capture {
 public:
  V4L2Capture(std::string_view device, int width, int height);
 
  V4L2Capture& operator=(const V4L2Capture&) = delete;
 
  ~V4L2Capture();
 
  int Initalise();
 
  bool CaptureFrame(uint8_t* buffer) const;
 
  V4L2Capture(const V4L2Capture&) = delete;
 
 private:
  void PrintCaps(const v4l2_capability* cap) const;
 
  int fd_ = -1;
  std::string device_;
  int width_;
  int height_;
  uint8_t* buffer_ = nullptr;
};
 
#endif  // V4L2_V4L2_SOURCE_H_