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egi_bjp.h
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egi_bjp.h
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/*-----------------------------------------------------------------------
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2 as
published by the Free Software Foundation.
Original source: https://blog.csdn.net/luxiaoxun/article/details/7622988
Midas Zhou
-----------------------------------------------------------------------*/
#ifndef __EGI_BJP_H__
#define __EGI_BJP_H__
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <string.h>
#include <linux/fb.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <arpa/inet.h>
#include <jpeglib.h>
#include <jerror.h>
//#include "egi.h"
#include "egi_image.h"
#include "egi_fbgeom.h"
#ifdef __cplusplus
extern "C" {
#endif
/* 14byte文件头 */
typedef struct
{
char cfType[2];//文件类型，"BM"(0x4D42)
long cfSize;//文件大小（字节）
long cfReserved;//保留，值为0
long cfoffBits;//数据区相对于文件头的偏移量（字节）
}__attribute__((packed)) BITMAPFILEHEADER;
//__attribute__((packed))的作用是告诉编译器取消结构在编译过程中的优化对齐
/* 40byte信息头 */
typedef struct
{
char ciSize[4];//BITMAPFILEHEADER所占的字节数
long ciWidth;//宽度
long ciHeight;//高度
char ciPlanes[2];//目标设备的位平面数，值为1
uint16_t ciBitCount;//每个像素的位数
char ciCompress[4];//压缩说明
char ciSizeImage[4];//用字节表示的图像大小，该数据必须是4的倍数
char ciXPelsPerMeter[4];//目标设备的水平像素数/米
char ciYPelsPerMeter[4];//目标设备的垂直像素数/米
char ciClrUsed[4]; //位图使用调色板的颜色数
char ciClrImportant[4]; //指定重要的颜色数，当该域的值等于颜色数时（或者等于0时），表示所有颜色都一样重要
}__attribute__((packed)) BITMAPINFOHEADER;
/* in order of BMP file BGR ??? */
typedef struct
{
unsigned char blue;
unsigned char green;
unsigned char red;
// unsigned char reserved; // for 32bit pix only
}__attribute__((packed)) PIXEL;//颜色模式RGB
/*** struct EGI_PICINFO
*/
typedef struct egi_picture_info
{
/* Extract from JPEG segement SOF0, Marker 0xC0 */
int width; /* Size in pixels */
int height;
int cpp; /* color components per pixel */
int bpc; /* Bits per color component */
unsigned char colorType; /* NOW for PNG only, TODO JPEG */
/* Same definition as PNG standard
Greyscale 0
Truecolour(RGB) 2
Indexed-colour 3
Greyscale + alpha 4
Truecolour + alpha 6
*/
bool progressive; /* JPEG: Progressive, PNG: Interlaced */
/* Extract from JPEG segemnt, Marker */
char *comment; /* Marker 0xFE, segment COM */
char *app14com; /* Marker 0xEC, APP14 0xEC Picture info(older digicams), Photoshop save for web:Ducky */
/* Extract from Exif IFD0 by TAG */
char *CameraMaker; /* TAG 0x010f */
char *CameraModel; /* TAG 0x0110 */
char *software; /* TAG 0x0131 software */
char *ImageDescription; /* TAG 0x010e */
char *DateTaken; /* TAG 0x9003 Date when the picture is taken. */
char *DateLastModify; /* 0x0132 time for last modification */
char *title; /* TAG 0x9c9b, ignored if ImageDescription exists */
char *xcomment; /* TAG 0x9c9c, Windows comment */
char *author; /* TAG 0x9c9d */
char *keywords; /* TAG 0x9c9e */
char *subject; /* TAG 0x9c9f */
char *copyright; /* TAG 0x8298 Copyright information */
/* GPS Data ____ MidasHK_2022_04_11 */
bool GPS_on; /* If GPS data is available */
char GPSTagVer[4]; /* GPS Tag Version, string, NOW ONLY support 2.2.0.0 as [0]'2' [1]'2' [2]'0' [3]'0' */
int GPSLatitudeRef; /* Positive for NORTH latitudes or negative for SOUTH */
//double GPSLatitude;
unsigned int GPSLatiDeg;
unsigned int GPSLatiMin;
double GPSLatiSec;
int GPSLongitudeRef; /* Positive for EAST longitudes or negative for WEST */
//double GPSLongitude;
unsigned int GPSLongiDeg;
unsigned int GPSLongiMin;
double GPSLongiSec;
//double GPSAltitude;
/* Thumbnail */
EGI_IMGBUF *thumbnail;
} EGI_PICINFO;
EGI_PICINFO *egi_picinfo_calloc(void);
void egi_picinfo_free(EGI_PICINFO **info);
int egi_picinfo_print(const EGI_PICINFO *PicInfo);
//EGI_PICINFO* egi_parse_jpegExif(const char *fpath);
EGI_PICINFO* egi_parse_jpegFile(const char *fpath);
EGI_PICINFO* egi_parse_pngFile(const char *fpath);
#define SHOW_BLACK_TRANSP 1
#define SHOW_BLACK_NOTRANSP 0
/* Check image file integraty */
#define JPEGFILE_INVALID -1
#define JPEGFILE_COMPLETE 0
#define JPEGFILE_INCOMPLETE 1
int egi_check_jpgfile(const char* path);
int egi_simpleCheck_jpgfile(const char* fpath);
#define PNGFILE_INVALID -1
#define PNGFILE_COMPLETE 0
#define PNGFILE_INCOMPLETE 1
int egi_check_pngfile(const char *fpath);
/* functions */
int compress_to_jpgFile(const char * filename, int quality, int width, int height,
unsigned char *rgb24, J_COLOR_SPACE inspace);
int compress_to_jpgBuffer(unsigned char ** outbuffer, unsigned long * outsize,int quality,
int width, int height, unsigned char *indata, J_COLOR_SPACE inspace);
unsigned char* open_jpgImg(const char *filename, int *w, int *h, int *components);
unsigned char* open_buffer_jpgImg( const unsigned char *inbuff, unsigned long insize, int *w, int *h, int *components );
void close_jpgImg(unsigned char *imgbuf);
int show_bmp(const char* fpath,FBDEV *fb_dev, int blackoff, int x0, int y0);
int show_jpg( const char* fpath, const unsigned char *inbuff, unsigned long insize,
FBDEV *fb_dev, int blackoff, int x0, int y0);
int egi_imgbuf_loadjpg(const char* fpath, EGI_IMGBUF *egi_imgbuf);
int egi_imgbuf_loadpng(const char* fpath, EGI_IMGBUF *egi_imgbuf);
int egi_imgbuf_savejpg(const char* fpath, EGI_IMGBUF *eimg, int quality);
int egi_imgbuf_savepng(const char* fpath, EGI_IMGBUF *egi_imgbuf);
EGI_IMGBUF* egi_imgbuf_readJpgBuffer(const unsigned char *inbuff, unsigned long insize);
EGI_IMGBUF* egi_imgbuf_readPngBuffer(const unsigned char *inbuff, unsigned long insize);
/* roaming picture in a window */
int egi_roampic_inwin(const char *path, FBDEV *fb_dev, int step, int ntrip,
int xw, int yw, int winw, int winh);
/* find all jpg files in a path --- OBSOLEGTE --- */
int egi_find_jpgfiles(const char* path, int *count, char **fpaths, int maxfnum, int maxflen);
/* save FB data to a 24bit color BMP file */
int egi_save_FBbmp(FBDEV *fb_dev, const char *fpath);
/* save FB data to a PNG file */
int egi_save_FBpng(FBDEV *fb_dev, const char *fpath);
/* save FB data to a JPG file */
int egi_save_FBjpg(FBDEV *fb_dev, const char *fpath, int quality);
#ifdef __cplusplus
}
#endif
#endif