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#include <iostream> | |
#include <vector> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <string.h> | |
#include <unistd.h> | |
#include <sys/types.h> | |
#include <sys/socket.h> | |
#include <netinet/in.h> | |
#include <netdb.h> | |
#include <opencv2/core/core.hpp> | |
#include <opencv2/highgui/highgui.hpp> | |
#define oops(msg) {perror(msg); exit(1);} | |
int main(int argc, char *argv[]) | |
{ | |
struct sockaddr_in saddr; | |
struct hostent *hp; | |
int sock; | |
if (argc < 3) { | |
fprintf(stderr, "ERROR, no port provided"); | |
exit(1); | |
} | |
hp = gethostbyname(argv[1]); | |
if (hp == NULL) { | |
oops("no such computer"); | |
} | |
sock = socket(AF_INET, SOCK_STREAM, 0); | |
if (sock == -1) { | |
oops("socket"); | |
} | |
bzero(&saddr, sizeof(saddr)); | |
bcopy(hp->h_addr, (struct sockaddr *)&saddr.sin_addr, hp->h_length); | |
saddr.sin_family = AF_INET; | |
saddr.sin_port = htons(atoi(argv[2])); | |
if (connect(sock, (struct sockaddr *)&saddr, sizeof(saddr)) != 0) { | |
oops("connect"); | |
} | |
cv::namedWindow("Display image", cv::CV_WINDOW_AUTOSIZE); | |
char data_size_str[20] = {0}; | |
for (;;) { | |
recv(sock, data_size_str, 15, 0); // 读取数据的大小 | |
int framelen = atoi(data_size_str); // 文本转化成int | |
// 接收压缩后的图像数据 | |
std::vector<uchar> buff(framelen); | |
int bytes = 0; | |
for (int i = 0; i < framelen ; i += bytes) { | |
if ((bytes = recv(sock, &buff[0]+i, framelen-i, 0)) == -1) { | |
oops("Receive"); | |
} | |
} | |
// 解压图像 | |
cv::Mat frame = cv::imdecode(cv::Mat(buff), cv::CV_LOAD_IMAGE_COLOR); | |
cv::imshow("Display image", frame); | |
cv::waitKey(20); | |
} | |
close(sock); | |
} |
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