使用 Python for PyQt WebEngine 授予对摄像头和麦克风的访问权限

Question

我正在构建一个从 Python 调用的简单 Web 应用程序。我正在使用下面的代码。加载此页面时，以编程方式授予对 Cam & Mic 访问权限的最简单方法是什么？我只在网上找到了 C++ 示例，但找不到在 Python 代码中执行此操作的方法。

from PyQt5.QtWidgets import QApplication
from  PyQt5.QtWebEngineWidgets import QWebEngineView
from PyQt5.QtCore import QUrl

app = QApplication([])

view = QWebEngineView()
view.load(QUrl("https://test.webrtc.org/"))
view.show()
app.exec_()

Answer 1

要授予权限，您必须使用QWebEnginePage的setFeaturePermission方法，但是当视图发出featurePermissionRequested信号时要求您这样做时，您必须这样做，这将指示 url 和feature。

from PyQt5.QtWidgets import QApplication
from PyQt5.QtWebEngineWidgets import QWebEngineView, QWebEnginePage
from PyQt5.QtCore import QUrl

class WebEnginePage(QWebEnginePage):
    def __init__(self, *args, **kwargs):
        QWebEnginePage.__init__(self, *args, **kwargs)
        self.featurePermissionRequested.connect(self.onFeaturePermissionRequested)

    def onFeaturePermissionRequested(self, url, feature):
        if feature in (QWebEnginePage.MediaAudioCapture, 
            QWebEnginePage.MediaVideoCapture, 
            QWebEnginePage.MediaAudioVideoCapture):
            self.setFeaturePermission(url, feature, QWebEnginePage.PermissionGrantedByUser)
        else:
            self.setFeaturePermission(url, feature, QWebEnginePage.PermissionDeniedByUser)

app = QApplication([])

view = QWebEngineView()
page = WebEnginePage()
view.setPage(page)
view.load(QUrl("https://test.webrtc.org/"))
view.show()
app.exec_()