android - Android Capture All Audio Going to Speakers

Question

In Android, is there a way to capture all of the audio going to the speakers(or headphones) and save it, to a file for example? For the app I am making, it would be a nice feature if I could pipe all of the sound somewhere else. I saw this but I wouldn't want to have to have users to have a custom ROM to use the feature. Root access won't be a problem. Is it possible? If so, how?

Answer 1

如果不提供自定义操作系统，您将无法做到这一点。根访问无济于事，因为不存在对AudioFlinger的合适 API 调用。