基于局域网网络编程实现开发板显示相册以及视频和音乐
文章目录
- 【1】Makefile编写
- 【2】项目图片素材
- 【3】客户端Client_Tcp.c
- 【4】客户端配套lcd.c
- 【5】服务器代码
- 【6】源码分享
【1】Makefile编写
all:
arm-linux-gcc Client_Tcp.c lcd.c -o main -I./include -L./lib -ljpeg -pthread
.PHONY:clean
clean:
rm -r main
【2】项目图片素材
【3】客户端Client_Tcp.c
#include 【4】客户端配套lcd.c
#include "myhead.h"
int lcd_draw_jpg(unsigned int x,unsigned int y,const char *pjpg_path,char *pjpg_buf,unsigned int jpg_buf_size,unsigned int jpg_half);
static char g_color_buf[FB_SIZE]={0};
static int g_fb_fd;
static int *g_pfb_memory;
volatile int g_jpg_in_jpg_x;
volatile int g_jpg_in_jpg_y;
//鑾峰彇鏂囦欢鐨勫睘鎬?unsigned long file_size_get(const char *pfile_path)
{
unsigned long filesize = -1;
struct stat statbuff;
//鑾峰彇鏂囦欢灞炴€? if(stat(pfile_path, &statbuff) < 0)
{
return filesize;
}
else
{
filesize = statbuff.st_size; //鑾峰彇鏂囦欢澶у皬
}
return filesize;
}
int lcd_open(const char *str)
{
g_fb_fd = open(str, O_RDWR);
if(g_fb_fd<0)
{
printf("open lcd error\n");
return -1;
}
//鏄犲皠鍥剧墖绌洪棿澶у皬
g_pfb_memory = (int *)mmap(NULL, FB_SIZE, PROT_READ|PROT_WRITE, MAP_SHARED, g_fb_fd, 0 );
if (MAP_FAILED == g_pfb_memory )
{
printf ("mmap failed %d\n",__LINE__);
}
return g_fb_fd;
}
//鍏抽棴鏄犲皠绌洪棿鍜屾枃浠?void close_lcd(void)
{
munmap(g_pfb_memory, FB_SIZE);
close(g_fb_fd);
}
void lcd_draw_point(unsigned int x,unsigned int y, unsigned int color)
{
*(g_pfb_memory+y*800+x)=color;
}
#if EN_LCD_SHOW_JPG
//鏄剧ずjpg鍥剧墖
int lcd_draw_jpg(unsigned int x,unsigned int y,const char *pjpg_path,char *pjpg_buf,unsigned int jpg_buf_size,unsigned int jpg_half)
{
//鎵撳紑鏂囦欢璁惧
lcd_open("/dev/fb0");
struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;
char *pcolor_buf = g_color_buf;
char *pjpg;
unsigned int i=0;
unsigned int color =0;
unsigned int count =0;
unsigned int x_s = x;
unsigned int x_e ;
unsigned int y_e ;
int jpg_fd;
unsigned int jpg_size;
unsigned int jpg_width;
unsigned int jpg_height;
//娌℃湁鏂囦欢鍜屾槧灏勭┖闂? if(pjpg_path == NULL && pjpg_buf == NULL)
return -1;
if(pjpg_path!=NULL)
{
//鎵撳紑鏂囦欢
jpg_fd=open(pjpg_path,O_RDWR);
if(jpg_fd == -1)
{
printf("open %s error\n",pjpg_path);
return -1;
}
//鑾峰彇鏂囦欢澶у皬鍑芥暟
jpg_size=file_size_get(pjpg_path);
//鐢宠鏂囦欢澶у皬鐨勭┖闂?
pjpg = malloc(jpg_size);
//璇诲彇鎵撳紑鐨勬枃浠? 瀛樺湪鏂囦欢澶у皬鐨勭┖闂?
read(jpg_fd,pjpg,jpg_size);
}
else
{
jpg_size = jpg_buf_size;
pjpg = pjpg_buf;
}
//鍥剧墖鍑洪敊澶勭悊
cinfo.err = jpeg_std_error(&jerr);
jpeg_create_decompress(&cinfo);
jpeg_mem_src(&cinfo,pjpg,jpg_size);
jpeg_read_header(&cinfo, TRUE);
jpeg_start_decompress(&cinfo);
if(jpg_half)
{
x_e = x_s+(cinfo.output_width/2);
y_e = y +(cinfo.output_height/2);
while(cinfo.output_scanline < cinfo.output_height)
{
pcolor_buf = g_color_buf;
jpeg_read_scanlines(&cinfo,(JSAMPARRAY)&pcolor_buf,1);
jpeg_read_scanlines(&cinfo,(JSAMPARRAY)&pcolor_buf,1);
for(i=0; i<(cinfo.output_width/2); i++)
{
color = *(pcolor_buf+2); // B
color = color | *(pcolor_buf+1)<<8; // G
color = color | *(pcolor_buf)<<16; //R
lcd_draw_point(x,y,color);
pcolor_buf +=6;
x++;
}
y++;
x = x_s;
}
}
else
{
x_e = x_s+cinfo.output_width;
y_e = y +cinfo.output_height;
while(cinfo.output_scanline < cinfo.output_height )// 锟叫断讹拷取一锟斤拷锟斤拷锟斤拷
{
pcolor_buf = g_color_buf;
jpeg_read_scanlines(&cinfo,(JSAMPARRAY)&pcolor_buf,1);
for(i=0; i<cinfo.output_width; i++)
{
/* 锟斤拷取rgb值 锟斤拷RGB锟较筹拷16位锟斤拷锟斤拷锟截碉拷锟斤拷锟斤拷 0x00ff0000 */
color = *(pcolor_buf+2)<<0;//B
color = color | *(pcolor_buf+1)<<8;//G
color = color | *(pcolor_buf)<<16;//R
/* 锟斤拷示锟斤拷锟截碉拷 */
lcd_draw_point(x,y,color);
pcolor_buf +=3;
x++;
}
/* 锟斤拷锟斤拷 */
y++;
x = x_s;
}
}
/*锟斤拷锟斤拷锟斤拷锟?/
jpeg_finish_decompress(&cinfo);
jpeg_destroy_decompress(&cinfo);
if(pjpg_path!=NULL)
{
/* 锟截憋拷jpg锟侥硷拷 */
close(jpg_fd);
/* 锟酵凤拷jpg锟侥硷拷锟节达拷占锟?*/
free(pjpg);
}
close_lcd();
return 0;
}
int lcd_draw_jpg_in_jpg(unsigned int x,unsigned int y,const char *pjpg_path,char *pjpg_buf,unsigned int jpg_buf_size)
{
/*锟斤拷锟斤拷锟斤拷锟斤拷锟襟，达拷锟斤拷锟斤拷锟斤拷锟斤拷*/
struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;
char *pcolor_buf = g_color_buf;
char *pjpg;
unsigned int i=0,j=0;
unsigned int color =0;
unsigned int count =0;
unsigned int x_s = x;
unsigned int x_e ;
unsigned int y_e ;
unsigned int y_n = y;
unsigned int x_n = x;
int jpg_fd;
unsigned int jpg_size;
if(pjpg_path!=NULL)
{
/* 锟斤拷锟斤拷jpg锟斤拷源锟斤拷权锟睫可讹拷锟斤拷写 */
jpg_fd=open(pjpg_path,O_RDWR);
if(jpg_fd == -1)
{
printf("open %s error\n",pjpg_path);
return -1;
}
/* 锟斤拷取jpg锟侥硷拷锟侥达拷小 */
jpg_size=file_size_get(pjpg_path);
/* 为jpg锟侥硷拷锟斤拷锟斤拷锟节达拷占锟?*/
pjpg = malloc(jpg_size);
/* 锟斤拷取jpg锟侥硷拷锟斤拷锟斤拷锟斤拷锟捷碉拷锟节达拷 */
read(jpg_fd,pjpg,jpg_size);
}
else
{
jpg_size = jpg_buf_size;
pjpg = pjpg_buf;
}
/*注锟斤拷锟斤拷锟斤拷锟斤拷锟?/
cinfo.err = jpeg_std_error(&jerr);
/*锟斤拷锟斤拷锟斤拷锟斤拷*/
jpeg_create_decompress(&cinfo);
/*直锟接斤拷锟斤拷锟节达拷锟斤拷锟斤拷*/
jpeg_mem_src(&cinfo,pjpg,jpg_size);
/*锟斤拷锟侥硷拷头*/
jpeg_read_header(&cinfo, TRUE);
/*锟斤拷始锟斤拷锟斤拷*/
jpeg_start_decompress(&cinfo);
x_e = x_s+cinfo.output_width;
y_e = y +cinfo.output_height;
/*锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷*/
while(cinfo.output_scanline < cinfo.output_height )
{
pcolor_buf = g_color_buf;
/* 锟斤拷取jpg一锟叫碉拷rgb值 */
jpeg_read_scanlines(&cinfo,(JSAMPARRAY)&pcolor_buf,1);
for(i=0; i<cinfo.output_width; i++)
{
/* 锟斤拷锟斤拷示锟侥诧拷锟斤拷 */
if(y_n>g_jpg_in_jpg_y && y_n<g_jpg_in_jpg_y+240)
if(x_n>g_jpg_in_jpg_x && x_n<g_jpg_in_jpg_x+320)
{
pcolor_buf +=3;
x_n++;
continue;
}
/* 锟斤拷取rgb值 */
color = *(pcolor_buf+2);
color = color | *(pcolor_buf)<<8;
color = color | *(pcolor_buf)<<16;
/* 锟斤拷示锟斤拷锟截碉拷 */
lcd_draw_point(x_n,y_n,color);
pcolor_buf +=3;
x_n++;
}
/* 锟斤拷锟斤拷 */
y_n++;
x_n = x_s;
}
/*锟斤拷锟斤拷锟斤拷锟?/
jpeg_finish_decompress(&cinfo);
jpeg_destroy_decompress(&cinfo);
if(pjpg_path!=NULL)
{
/* 锟截憋拷jpg锟侥硷拷 */
close(jpg_fd);
/* 锟酵凤拷jpg锟侥硷拷锟节达拷占锟?*/
free(pjpg);
}
return 0;
}
#endif
//LCD锟斤拷锟斤拷锟街凤拷锟斤拷锟酵计?int lcd_draw_bmp(unsigned int x,unsigned int y,const char *pbmp_path)
{
int bmp_fd;
unsigned int blue, green, red;
unsigned int color;
unsigned int bmp_width;
unsigned int bmp_height;
unsigned int bmp_type;
unsigned int bmp_size;
unsigned int x_s = x;
unsigned int x_e ;
unsigned int y_e ;
unsigned char buf[54]={0};
char *pbmp_buf=g_color_buf;
/* 锟斤拷锟斤拷位图锟斤拷源锟斤拷权锟睫可讹拷锟斤拷写 */
bmp_fd=open(pbmp_path,O_RDWR);
if(bmp_fd == -1)
{
printf("open bmp error\r\n");
return -1;
}
/* 锟斤拷取位图头锟斤拷锟斤拷息 */
read(bmp_fd,buf,54);
/* 锟斤拷锟斤拷 */
bmp_width =buf[18];
bmp_width|=buf[19]<<8;
printf("bmp_width=%d\r\n",bmp_width);
/* 锟竭讹拷 */
bmp_height =buf[22];
bmp_height|=buf[23]<<8;
printf("bmp_height=%d\r\n",bmp_height);
/* 锟侥硷拷锟斤拷锟斤拷 */
bmp_type =buf[28];
bmp_type|=buf[29]<<8;
printf("bmp_type=%d\r\n",bmp_type);
/* 锟斤拷锟斤拷锟斤拷示x锟斤拷y锟斤拷锟斤拷锟斤拷锟轿伙拷锟?*/
x_e = x + bmp_width;
y_e = y + bmp_height;
/* 锟斤拷取位图锟侥硷拷锟侥达拷小 */
bmp_size=file_size_get(pbmp_path);
/* 锟斤拷取锟斤拷锟斤拷RGB锟斤拷锟斤拷 */
read(bmp_fd,pbmp_buf,bmp_size-54);
for(;y < y_e; y++)
{
for (;x < x_e; x++)
{
/* 锟斤拷取锟斤拷锟斤拷锟斤拷锟斤拷色锟斤拷锟斤拷 */
blue = *pbmp_buf++;
green = *pbmp_buf++;
red = *pbmp_buf++;
/* 锟叫断碉拷前锟斤拷位图锟角凤拷32位锟斤拷色 */
if(bmp_type == 32)
{
pbmp_buf++;
}
/* 锟斤拷锟?4bit锟斤拷色 */
color = red << 16 | green << 8 | blue << 0;
lcd_draw_point(x, y, color);
}
x = x_s;
}
/* 锟斤拷锟斤拷使锟斤拷BMP锟斤拷锟斤拷锟酵凤拷bmp锟斤拷源 */
close(bmp_fd);
return 0;
}
// int main(int argc, char const *argv[])
// {
// printf("1:1.jpg 2:2.jpg 3:3.jpg\n");
// int num;
// scanf("%d",&num);
// if(num ==1)
// {
// lcd_draw_jpg(0, 0, "1.jpg", NULL, 0, 0);
// }
// else if(num == 2)
// {
// lcd_draw_jpg(0, 0, "2.jpg", NULL, 0, 0);
// }
// else if(num ==3)
// {
// lcd_draw_jpg(0, 0, "3.jpg", NULL, 0, 0);
// }
// return 0;
// }
【5】服务器代码
#include 【6】源码分享
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提取码：3ubj
