Access to the iOS' video decoder?

Question

The iPad/iOS has video streaming support for e.g. H.264 using MPMoviePlayerController etc., but i receive H.264 data through a custom, proprietary, stream and need to decode it in a soft real-time scenario.
Can the iPads/iOS' video decoder be accessed in any way to decode this data?

Update: Apparently the iOS 4.0 Core Media Framework supports decoding frames and knows of H.264, but there is no sample code nor can i see what i actually am supposed to call for the actual decoding.

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Update (ten years later!)

For anyone googling here, you do this in iOS these days with "VideoToolbox".

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Answer 1

After raising the issue with Apple DTS it turns out that there currently is no way to decode video data from custom stream sources.

I will file an enhancement request for this.