EACS was just DVI (high nibble first) with stereo and mono modes, while
old DVI was mono only.
This unifies both decoders, so DVI_IMA (not interleaved) works with mono
and stereo while DVI_IMA_int (interleaved) forces mono.
Some metas needed to explicitly set DVI_IMA_int but others work with no
change.
EA's MT/MicroTalk is not the early version of EAXA as I thought, but a
rarely used VBR codec (ex. FIFA 2001/2002 PS2) seemingly related to
Westwood VBR ADPCM
* tested most variations using EA's tools
* added looping [Need for Speed II PC]
* added DSP support [3DS games]
* fixed PCM/EAXA/MT in some cases [PS2/GC/XBOX/Wii games]
* fixed sample rate/codec defaults, num_samples in some cases
* documented more header patches and other details (ex. "EA ADPCM" is
now EA MT/MicroTalk, as per EA's tools)
* (dev) some internals adapted for EA stuff
changed _noninterleaved functions to _int and changed related descriptions appropriately
added an _int version of SDX2 and reverted to pre-322 behavior for normal deocder
made the various get_high_nibble globals all be the same vgmstream->get_high_nibble for thread safety and code consolidation (this required some changes to make decode functions take VGMSTREAM rather than VGMSTREAMCHANNEL)
git-svn-id: https://vgmstream.svn.sourceforge.net/svnroot/vgmstream@323 51a99a44-fe44-0410-b1ba-c3e57ba2b86b
