系列Python开发
文章目录
- 系列Python开发
- 前言
- 一、python实现多路视频播放功能
- 二、代码实现
-
- [1. http申请视频流地址并cv2播放功能](#1. http申请视频流地址并cv2播放功能)
- 三、打包代码实现
- 总结
前言
一、python实现多路视频播放功能
服务端开发后通常需要做功能测试、性能测试，通常postman、curl等作功能测试使用，长跑服务性能postman并不太适合，如用c++实现播放器功能太慢，效率太低效，本文介绍一种用python来实现多路视频播放的测试。
二、代码实现
1. http申请视频流地址并cv2播放功能
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import json
import requests
import time
import threading
from threading import Thread
import signal
import base64
from io import BytesIO
import queue
import random
import sys
from openpyxl import load_workbook
import json
import cv2
import datetime
import os
import shutil
import numpy as np
requests.packages.urllib3.disable_warnings()
group_id_base = 31000000452158000001
default_group = 31000000452168000002
username = "admin"
password = "admin123"
sever_ip = "1237.0.0.1"
my_token = "D21DCD7B-9380-CC90-7DA4-673BDE3BF2CF"
def allocToken(sever_ip):
url = '%s/micplatform/vuds/allocToken' % (sever_ip)
print(url)
headers = {
"Content-Type": "application/json",
}
data = {
"validateMethod": "name+password",
"username": str(username),
"userpassword": str(password),
"refreshInterval": 3600,
"requestid": "1"
}
response = requests.post(url, headers=headers, verify=False, data=json.dumps(data))
print(response.text)
resp = json.loads(response.text)
print( "url "+ url +" token: " + str(resp["token"]))
return resp["token"]
def AllocStream(deviceId):
url = '%s/micplatform/vmd/realplayUrlAlloc' %(sever_ip)
headers = {
"Content-Type": "application/json",
}
data = {
"requestid": "1",
"token": my_token,
"deviceid": deviceId,
"protocol": "http+flv"
}
try:
response = requests.post(url, headers=headers, verify=False, data=json.dumps(data))
response.raise_for_status() # Check for HTTP errors
try:
result = response.json()
if "playurl" in result:
print(f"{deviceId} 申请码流成功 {result['playurl']}")
return result['playurl']
else:
print(f"{deviceId} 申请码流失败 {response.json()}" + my_token)
return ""
except json.JSONDecodeError:
print(f"{deviceId} 响应解析失败：无法解析JSON")
return ""
except requests.RequestException as e:
print(f"{deviceId} 请求失败：{e}")
return ""
def FreeStream(playurl):
url = '%s/micplatform/vmd/realplayUrlRelease' %(sever_ip)
headers = {
"Content-Type": "application/json",
}
data = {
"requestid": "1",
"token": my_token,
"playurl": playurl
}
try:
response = requests.post(url, headers=headers, verify=False, data=json.dumps(data))
response.raise_for_status() # Check for HTTP errors
try:
result = response.json()
if "resultDesc" in result and result['resultDesc'] == "成功":
print(f"{playurl} 释放码流成功")
else:
print(f"{playurl} 申请码流失败")
except json.JSONDecodeError:
print(f"{playurl} 响应解析失败：无法解析JSON" )
except requests.RequestException as e:
print(f"{playurl} 请求失败：{e}")
def openVideo(streamtype,deviceid,stop_event):
playurl = AllocStream(deviceid)
if len(playurl) == 0:
return
if len(playurl) != 0:
playurl_array.append(playurl)
if (streamtype == 3 or streamtype == 2):
cap = cv2.VideoCapture(playurl)
else:
cap = cv2.VideoCapture(0)
while (not stop_event.is_set()):
ret, frame = cap.read() # get a frame
if ret == True:
# showdate = str(datetime.datetime.now())
# font = cv2.FONT_HERSHEY_SIMPLEX
# frame = cv2.putText(frame, showdate, (10, 100), font, 0.5, (0, 255, 255), 2, cv2.LINE_AA)
cv2.imshow(deviceid, frame) # show a frame
if cv2.waitKey(1) & 0xFF == ord('q'):
print("deviceid "+ deviceid + " receive the stop command")
stop_event.set() # 设置事件，通知其他线程停止
break
else:
break
cap.release()
# 如果你的程序在退出时没有正确关闭所有OpenCV窗口，那么可能是因为cv2.destroyAllWindows()没有在主线程中被调用。在所有线程结束后，确保在主线程中调用
# cv2.destroyAllWindows()
device_datas = []
stop_event = threading.Event() # 创建一个事件对象
def AllocStreamTaskByExcelFile(xlsfile):
workbook = load_workbook(xlsfile)
sheet = workbook.active
for row in sheet.iter_rows(values_only=True):
if len(row[0]) != 20 :
continue
if row[4] != "ON":
continue
print("insert davice_data id: ",row[0])
device_datas.append(row[0])
process_array_in_threads(device_datas)
playurl_array = []
def process_array_in_threads(device_datas):
print(device_datas)
start_time = time.time()
threads = []
for deviceid in device_datas:
thread = threading.Thread(target=openVideo, args=(3,deviceid,stop_event))
threads.append(thread)
thread.start()
print("start task stream "+ deviceid)
for thread in threads:
thread.join()
cv2.destroyAllWindows()
for playurl in playurl_array:
FreeStream(playurl)
playurl_array.clear()
if __name__ == '__main__':
try:
file_path = "config.ini"
with open(file_path, 'r') as f:
config = json.load(f)
if 'serverUrl' in config:
sever_ip = config['serverUrl']
else:
sever_ip = ""
print("Please check serverUrl fielddata in config.ini")
if 'user' in config:
username = config['user']
else:
username = ""
print("Please check username fielddata in config.ini")
if 'password' in config:
password = config['password']
else:
password = ""
print("Please check password fielddata in config.ini")
except FileNotFoundError:
print(f"{file_path} does not exist")
exit(0)
except IOError:
print(f"{file_path} exists but is not readable")
exit(0)
except json.JSONDecodeError:
print(f"{file_path} is not a valid JSON file")
exit(0)
# 配置文件格式检查
if not sever_ip or not username or not password:
print("Config file is missing required fields. Please check serverUrl, user, password.")
exit(0)
print("*************************************")
print("get server url in config.ini: " + sever_ip)
print("get user in config.ini: " + username)
print("get password in config.ini: " + password)
print("*************************************")
my_token = allocToken(sever_ip)
print(sever_ip + " get a token is " + my_token)
file = "name2id_vplatform.xlsx"
AllocStreamTaskByExcelFile(file)输入文件 name2id_vplatform.xlsx
配置文件输入参数：config.ini
三、打包代码实现
基于pycharm软件，安装打包软件
clike
pip install pyinstaller
pyinstaller --onefile main.py
pyinstaller --onefile --distpath dist --out my_application.exe your_script.py
--onefile 表示创建一个独立的文件。
--distpath dist 指定输出目录为 dist。
--out my_application 指定输出的文件名为 my_application.exe。
your_script.py 是你想要打包的 Python 脚本。
总结
本文实现了最简单最快的方式实现播放器功能，python实现视频播放多路实时流的视频。
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