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)