关于21物联一linux“gec6818”如何替换图片(附带资源)

#include <stdio.h> #include <stdlib.h> #include <stdbool.h> #include <string.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <unistd.h> #include <sys/mman.h> #include <linux/input.h> #include <dirent.h> #define PIC_PATH "./dirname" #define PICTURE "./picture" #define LCD_PATH "/dev/fb0" #define TS_PATH "/dev/input/event0" #define Slide_STATIC 0 #define Slide_UP 1 #define Slide_DOWN 2 #define Slide_LEFT 3 #define Slide_RIGHT 4 typedef struct node { char picpath[64]; struct node *next; struct node *prev; } D_NODE, *pD_node; int lcd_fd; int *FB; void Lcd_Init(void); void Lcd_Uninit(void); void Show_Bmp(int win, int high, int x_s, int y_s, char *picname); int Search_pic(char *dirname, pD_node pic_list); int getxy(int *x, int *y); int Get_Slide(int ts_fd); int ts_open(void); int ts_close(int fd); char *auto_pic[10] ={ "./dirname/1.bmp", "./dirname/2.bmp", "./dirname/3.bmp", "./dirname/4.bmp", "./dirname/5.bmp", "./dirname/6.bmp", "./dirname/7.bmp", "./dirname/8.bmp", "./dirname/9.bmp", "./dirname/10.bmp" }; pD_node d_list_Create(); bool d_list_Insert_Head(pD_node Head, char *pic_name); int d_list_Destroy(pD_node Head); void D_Loop_List_Display(pD_node Head); bool D_Loop_List_Insert_End(pD_node head, char *pic_name); bool D_Loop_List_Remove(pD_node Node); pD_node d_list_Create() { //0.申请头节点空?? pD_node Head = (pD_node)malloc(sizeof(D_NODE)); if (Head == NULL) { perror("malloc failed!"); return NULL; } //1.头节点赋 Head->next = Head; Head->prev = Head; //2.返回头节 return Head; } //1.头插 bool d_list_Insert_Head(pD_node Head, char *pic_name) { //0.新节点申请空?? pD_node Newnode = (pD_node)malloc(sizeof(D_NODE)); if (Newnode == NULL) { perror("malloc failed!"); return false; } //1.新节点赋 strcpy(Newnode->picpath, pic_name); Newnode->prev = Newnode; Newnode->next = Newnode; //2.头插法插入链 Newnode->next = Head->next; Head->next = Newnode; Newnode->next->prev = Newnode; Newnode->prev = Head; return true; } //尾插 bool D_Loop_List_Insert_End(pD_node head, char *pic_name) { //1,新节点申请堆空间 pD_node newnode = (pD_node)malloc(sizeof(D_NODE)); if (NULL == newnode) { perror("malloc newnode failed"); return false; } //2,对新节点进行赋 strcpy(newnode->picpath, pic_name); //把传入的字符串拷贝到新的节点 newnode->prev = newnode; newnode->next = newnode; //尾插法插入节 //1)处理前继指针 newnode->prev = head->prev; head->prev = newnode; //2)处理后继指针 newnode->prev->next = newnode; newnode->next = head; return true; } //3.显示 void D_Loop_List_Display(pD_node Head) { pD_node p = Head->next; while (p != Head) { printf("%s\n", p->picpath); p = p->next; } } int d_list_Destroy(pD_node Head) { pD_node p = Head; pD_node q = p->next; int i = 0; while (q != Head) { p = q; free(p); i++; q = q->next; } free(Head); return i; } int ts_open(void) { int fd = open(TS_PATH, O_RDWR); if (-1 == fd) { perror("open ts failed"); return -1; } return fd; } int ts_close(int fd) { close(fd); } int Get_Slide(int ts_fd) { int x1, x2, y1, y2; struct input_event xy; //1，获取滑动过程中起点坐标和终点坐?? for (;;) //获取起点坐标 { read(ts_fd, &xy, sizeof(xy)); if (xy.type == EV_ABS && xy.code == ABS_X) { x1 = xy.value; } if (xy.type == EV_ABS && xy.code == ABS_Y) { y1 = xy.value; } if (xy.type == EV_KEY && xy.code == BTN_TOUCH && xy.value == 1) { printf("起点坐标(%d,%d)\n", x1, y1); break; } } x2 = x1; y2 = y1; for (;;) //获取终点坐标 { read(ts_fd, &xy, sizeof(xy)); if (xy.type == EV_ABS && xy.code == ABS_X) { x2 = xy.value; } if (xy.type == EV_ABS && xy.code == ABS_Y) { y2 = xy.value; } if (xy.type == EV_KEY && xy.code == BTN_TOUCH && xy.value == 0) { printf("终点坐标(%d,%d)\n", x2, y2); break; } } //2，判断滑动方块 /*右滑*/ if (x2 > x1 && (x2 - x1) * (x2 - x1) > (y2 - y1) * (y2 - y1)) { printf("右滑\n"); return Slide_RIGHT; } if (x2 < x1 && (x2 - x1) * (x2 - x1) > (y2 - y1) * (y2 - y1)) { printf("左滑\n"); return Slide_LEFT; } if (y2 > y1 && (x2 - x1) * (x2 - x1) < (y2 - y1) * (y2 - y1)) { printf("下滑\n"); return Slide_DOWN; } if (y2 < y1 && (x2 - x1) * (x2 - x1) < (y2 - y1) * (y2 - y1)) { printf("上滑\n"); return Slide_UP; } if (x1 == x2 && y1 == y2) { printf("未滑动\n"); return Slide_STATIC; } } int getxy(int *x, int *y) { //1.打开触摸屏文件 int fd = open(TS_PATH, O_RDWR); if (fd == -1) { perror("open failed!"); return -1; } //2.读取触摸屏文件数据 struct input_event xy; int flag = 0; //记录当前获取坐标的信标 while (1) { read(fd, &xy, sizeof(xy)); if (xy.type == EV_ABS && xy.code == ABS_X) { *x = xy.value * 800 / 1024; flag = 1; } if (xy.type == EV_ABS && xy.code == ABS_Y) { *y = xy.value * 480 / 600; flag = 2; } if (flag == 2) { printf("(%d,%d)\n", *x, *y); flag = 0; break; } } //3.关闭触摸屏文件 close(fd); return 0; } int Search_pic(char *dirname, pD_node pic_list) { //0.打开目录 DIR *dp = opendir(dirname); if (NULL == dp) { perror("opendir failed!"); return -1; } //1.循环读取目录 struct dirent *ep; int picnum = 0; char picname[64]; while (1) { memset(picname, 0, sizeof(picname)); ep = readdir(dp); if (ep == NULL) break; if (strcmp(".", ep->d_name) == 0 || strcmp("..", ep->d_name) == 0) continue; //检索目录下??.bmp文件 if (strcmp(".bmp", ep->d_name + strlen(ep->d_name) - 4) == 0) { sprintf(picname, "%s/%s", dirname, ep->d_name); D_Loop_List_Insert_End(pic_list, picname); //尾插把指定目录下的图片插入到链表 } picnum++; } //2.关闭目录 closedir(dp); return picnum; } void Lcd_Init(void) { //1,打开LCD文件 lcd_fd = open(LCD_PATH, O_RDWR); if (-1 == lcd_fd) { perror("open lcd failed"); return; } //2,lcd映射到用户空间 FB = mmap(NULL, 800 * 480 * 4, PROT_READ | PROT_WRITE, MAP_SHARED, lcd_fd, 0); if (MAP_FAILED == FB) { perror("mmap lcd failed"); return; } } //2,LCD释放函数 void Lcd_Uninit(void) { //4,解除映射，关闭文件 munmap(FB, 800 * 480 * 4); close(lcd_fd); } //3,显示宽度为win,高度为high的bmp图片 在起点坐标为(x_s, y_s)这个点开始显示图?? void Show_Bmp(int win, int high, int x_s, int y_s, char *picname) { int i, j; int tmp; char buf[win * high * 3]; //存放图片的原始数?? int bmp_buf[win * high]; //存放转码之后的ARGB数据 //1,lcd初始?? Lcd_Init(); //2,读取图片数据，并且进行转换 RGB -> ARGB //打开图片 FILE *fp = fopen(picname, "r"); if (NULL == fp) { perror("fopen failed"); return; } //读取图片像素点原始数据 fseek(fp, 54, SEEK_SET); fread(buf, 3, win * high, fp); //将读取的数据进行转码 for (i = 0; i < win * high; i++) { //ARGB R G B bmp_buf[i] = buf[3 * i + 2] << 16 | buf[3 * i + 1] << 8 | buf[3 * i]; } //将转码的数据进行倒转 把第i行，第j列的点跟??479-i行，第j列的点进行交?? for (i = 0; i < high / 2; i++) //0~239?? { for (j = 0; j < win; j++) //0~799?? { //