lib_uvc2.h

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#ifndef LINUX_LIBV2_SOURCE_USB_CAMERA2_LIB_UVC2_H_
#define LINUX_LIBV2_SOURCE_USB_CAMERA2_LIB_UVC2_H_

// Copyright 2024

#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <malloc.h>
#include <stddef.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <asm/types.h>
#include <linux/videodev2.h>

struct videobuffer {
    unsigned char *start;   
    size_t offset;          
    unsigned int length;    
};

struct uvc_fd {
    const char* name;               
    int v4l2_fd;                    
    int in_width;                   
    int in_height;                  
    int width;                      
    int height;                     
    int sizeimage;                  
    int top;                        
    int left;                       
    int rotate;                     
    int cap_fmt;                    
    int camera_framerate;           
    int capture_mode;               
    int usb_camera;                 
    struct videobuffer buffers[4];  
    unsigned int buf_count;         
    int buf_index;                  
};

#ifdef __cplusplus
#define UVC2_API extern "C"
#else
#define UVC2_API
#endif

    UVC2_API int uvc2_check(char *dev);

    UVC2_API int uvc2_init(struct uvc_fd *v, const char *devname, int width, int height);
    
    UVC2_API int uvc2_start_capturing(struct uvc_fd *v);

    UVC2_API int ucv2_stop_capturing(struct uvc_fd v);

    UVC2_API int uvc2_get_buffsize(struct uvc_fd v);

    UVC2_API void *uvc2_capturing(struct uvc_fd *v);

    UVC2_API int uvc2_release_capturing(struct uvc_fd v);

    UVC2_API void uvc2_close(struct uvc_fd v);

    UVC2_API int YUY2ToRGB(unsigned char *src, unsigned char *rgb, int width, int height, int bits);
    
    UVC2_API int convert_yuv_to_rgb_buffer(unsigned char *yuv,
                                     unsigned char *rgb,
                                     unsigned int   width,
                                     unsigned int   height);

#endif