* commit '5312818524484a995433b986a2a7a6602572d4db':
atrac3plus: Make initialization dependant on channel count rather than channel map
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Makes it easier to recreate an AVCodecContext for ATRAC3+ decoding,
which is needed in multimedia frameworks, as well as in general cases
where demuxing and decoding are separate entities.