I create a camera extension and App can push video data to camera extension with sinkStream. I want to monitor the number of clients connected to the camera extension and close the app's push stream when the number of connected client is zero.
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Hello, I referred to the official camera extension example at https://developer.apple.com/documentation/coremediaio/creating_a_camera_extension_with_core_media_i_o?language=objc. I'm using CMake to build the camera extension plugin and integrate it into a Qt CMake project. When installing the system extension file, I receive a failure prompt with the following message:
Error Domain=OSSystemExtensionErrorDomain Code=8 "Invalid code signature or missing entitlements" UserInfo={NSLocalizedDescription=Invalid code signature or missing entitlements}
Here are the entitlements files for the camera extension:
<?xml version=\"1.0\" encoding=\"UTF-8\"?>
<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">
<plist version=\"1.0\">
<dict>
<key>com.apple.security.app-sandbox</key>
<true/>
<key>com.apple.security.application-groups</key>
<array>
<string>com.yealink.meeting.app</string>
</array>
</dict>
</plist>
The info.List.in file for the camera extension:
<?xml version=\"1.0\" encoding=\"UTF-8\"?>
<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">
<plist version=\"1.0\">
<dict>
<key>CMIOExtension</key>
<dict>
<key>CMIOExtensionMachServiceName</key>
<string>$(TeamIdentifierPrefix)$(PRODUCT_BUNDLE_IDENTIFIER)</string>
</dict>
</dict>
</plist>
And the entitlements file for the app:
<?xml version=\"1.0\" encoding=\"UTF-8\"?>
<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">
<plist version=\"1.0\">
<dict>
<key>com.apple.developer.system-extension.install</key>
<true/>
<key>com.apple.security.app-sandbox</key>
<true/>
<key>com.apple.security.application-groups</key>
<array>
<string>com.yealink.meeting.app</string>
</array>
<key>com.apple.security.device.camera</key>
<true/>
<key>com.apple.security.device.microphone</key>
<true/>
<key>com.apple.security.device.usb</key>
<true/>
<key>com.apple.security.network.client</key>
<true/>
<key>com.apple.security.network.server</key>
<true/>
<key>com.apple.security.personal-information.location</key>
<true/>
</dict>
</plist>
I'm looking forward to your response.
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