Function Help！

[CodeToolPerson]

Hello, thank you very much to the development team for developing such an excellent application, which has provided me with good ideas and examples. The company is currently asking me to work on a playback software project, which has already implemented m3u8 and still needs to support xtream codes. Due to a lack of relevant documentation and not knowing the language used in your project, the development is currently at a standstill. This is causing me great distress and anxiety, and I would like to ask how I can implement support for xtream codes. Can you provide some ideas? I am using the Dart language Flutter framework, thank you very much!!!