How to decode a H.264 frame on iOS by hardware decoding?

Question

I have been used ffmpeg to decode every single frame that I received from my ip cam. The brief code looks like this:

-(void) decodeFrame:(unsigned char *)frameDa         


        

Answer 1

Edit:

This link provide more detail explanation on how to decode h.264 step by step: stackoverflow.com/a/29525001/3156169

Original answer:

I watched the session 513 "Direct Access to Video Encoding and Decoding" in WWDC 2014 yesterday, and got the answer of my own question.

The speaker says:

We have Video Toolbox(in iOS 8). Video Toolbox has been there on OS X for a while, but now it's finally populated with headers on iOS.This provides direct access to encoders and decoders.

So, there is no way to do hardware decoding frame by frame in iOS 7, but it can be done in iOS 8.

Is there anyone figure out how to directly access to video encoding and decoding frame by frame in iOS 8?