问题
So I am having a look into Firefox OS right now. One thing I would like to try is to manipulate the device camera's live feed using canvas et.al.
From what I can see in the blog posts (like this one) and the code in the boilerplate app this is always done using a MozActivity, meaning that the user is leaving the application, takes a picture and passes this picture back to the application, where I could post-process it.
But for live manipulation I would need to have a live camera feed inside my App, just like you would do using getUserMedia when accessing a computer's webcam. getUserMedia doesn't seem to be supported in the Firefox OS simulator though.
Is there any workaround to this or some API that I am missing?
回答1:
I'll answer this with the response I got from the Mailing List (the answer is "not yet"):
WebRTC will (hopefully) land in Firefox OS 1.2 (as reference, the initial launch is on 1.0.1, closely followed but dependent on carriers is 1.1). WebRTC is a of lot of low-level hardware dependencies, so it might take longer.
You can follow along on this meta bug and its dependencies: https://bugzilla.mozilla.org/show_bug.cgi?id=750011
Thanks for the answer, Mozilla, can't wait for 1.2!
回答2:
refer to thread getUserMedia for Firefox OS
WebRTC for audio is supported in Firefox OS 1.2. But WebRTC for video (ex: live camera feed) is just landed in Firefox OS 1.4, which is still in development phase. So be patient, it will be available this year.
来源：https://stackoverflow.com/questions/16106584/can-i-get-a-live-camera-image-inside-my-app-in-firefox-os