Python3-onvif协议之相机截图

 

实现功能：相机截图、获取预置点、移动到预置点、变焦
pip3 install --upgrade onvif_zeep

 

获取截图 python3 ok 300ms

python2 error:

Unknown error: super() takes at least 1 argument (0 given)
 

from onvif import ONVIFCamera
import zeep
import time
import requests
from requests.auth import HTTPDigestAuth

def zeep_pythonvalue(self, xmlvalue):
    return xmlvalue

class Onvif_hik(object):
    def __init__(self, ip: str, username: str, password: str):
        self.ip = ip
        self.username = username
        self.password = password
        zeep.xsd.simple.AnySimpleType.pythonvalue = zeep_pythonvalue
        self.save_path = "./{}T{}.jpg".format(self.ip, str(time.time()))  # 截图保存路径

       def content_cam(self):
        """
        链接相机地址
        :return:
        """
        try:
            self.mycam = ONVIFCamera(self.ip, 80, self.username, self.password)
            self.media = self.mycam.create_media_service()  # 创建媒体服务
            self.media_profile = self.media.GetProfiles()[0]  # 获取配置信息
            self.ptz = self.mycam.create_ptz_service()  # 创建控制台服务
            return True
        except Exception as e:
            return False

    def Snapshot(self):
        """
        截图
        :return: 
        """
        res = self.media.GetSnapshotUri({'ProfileToken': self.media_profile.token})

        response = requests.get(res.Uri, auth=HTTPDigestAuth(self.username, self.password))
        with open(self.save_path, 'wb') as f:  # 保存截图
            f.write(response.content)

    def get_presets(self):
        """
        获取预置点列表
        :return:预置点列表--所有的预置点
        """
        presets = self.ptz.GetPresets({'ProfileToken': self.media_profile.token})  # 获取所有预置点,返回值：list
        return presets

        def goto_preset(self, presets_token: int):
        """
        移动到指定预置点
        :param presets_token: 目的位置的token，获取预置点返回值中
        :return: 
        """
        try:
            self.ptz.GotoPreset(
                {'ProfileToken': self.media_profile.token, "PresetToken": presets_token})  # 移动到指定预置点位置
        except Exception as e:
            print(e)

        def zoom(self, zoom: str, timeout: int = 0.1):
        """
        变焦
        :param zoom: 拉近或远离
        :param timeout: 生效时间
        :return: 
        """
        request = self.ptz.create_type('ContinuousMove')
        request.ProfileToken = self.media_profile.token
        request.Velocity = {"Zoom": zoom}
        self.ptz.ContinuousMove(request)
        time.sleep(timeout)
        self.ptz.Stop({'ProfileToken': request.ProfileToken})

 

libxml/xmlversion.h: No such file or directory

解决办法

sudo apt-get install libxml2-dev libxslt-dev

cv2.imdecode(np.fromstring(response.content, np.uint8), 1)