樹莓派：python3通過usb攝像頭拍照並通過socket傳到PC機

首先，樹莓派要能夠使用攝像頭，具體使用樹莓派完成拍照參照以下兩位作者的博客。

https://blog.csdn.net/NCTU_to_prove_safety/article/details/64923572 @ NCTU_to_prove_safety

https://blog.csdn.net/weixin_42828324/article/details/81938977   @ 淹不死的狐狸

server.py

# -*- coding: UTF-8 -*-
from imageai.Prediction import ImagePrediction
import socket
import os
import sys
import struct
import time


def socket_service():
    try:
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
        s.bind(('192.168.1.178', 6666))
        s.listen(10)
    except socket.error as msg:
        print(msg)
        sys.exit(1)

    print("Wait")

    while True:
        sock, addr = s.accept()
        deal_data(sock, addr)
        break
    s.close()


def deal_data(sock, addr):
    print("Accept connection from {0}".format(addr))

    while True:
        fileinfo_size = struct.calcsize('128sl')
        buf = sock.recv(fileinfo_size)
        if buf:
            filename, filesize = struct.unpack('128sl', buf)
            fn = filename.decode().strip('\x00')
            new_filename = os.path.join('./', 'new_' + fn)

            recvd_size = 0
            fp = open(new_filename, 'wb')

            while not recvd_size == filesize:
                if filesize - recvd_size > 1024:
                    data = sock.recv(1024)
                    recvd_size += len(data)
                else:
                    data = sock.recv(1024)
                    recvd_size = filesize
                fp.write(data)
            fp.close()
        sock.close()
    
        break




if __name__ == '__main__':
    socket_service()
    

Client.py

import socket
import time
import os
import sys
import struct


def sock_client():
    try:
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        s.connect(('192.168.1.178', 6666))
    except socket.error as msg:
        print(msg)
        print(sys.exit(1))

    while True:
        #filepath = input('input the file: ')
        os.system("fswebcam -S 10 image2.jpg")
        time.sleep(1)
        filepath = 'image2.jpg'
        fhead = struct.pack(b'128sl', bytes(os.path.basename(filepath).encode('utf-8')), os.stat(filepath).st_size)
        s.send(fhead)
        print('client filepath: {0}'.format(filepath))

        fp = open(filepath, 'rb')
        while 1:
            data = fp.read(1024)
            if not data:
                print('{0} file send over...'.format(filepath))
                break
            s.send(data)
        s.close()
        break


if __name__ == '__main__':
    sock_client()