Add comments for magic constants.
Factorize some multiplications into MP3AB0.
Renamme some functions to match mp3 synthesis polyphase filter bank procedure.
Reformat constant tables.
Refactor mp3_decode.
More refactoring. Fix odd indices in matrix_step.
Reworked some bits about samples fifo.
Minor cosmetics changes.
More cosmetics changes.
More cosmetics changes.
Renammed mdct related constants.
Remove unused headers.
Make comment about adpcm unsupported 2bit adpcm more specific.
Refactor HILOGAIN.
Fix offset in SETVOL3 comment.
Renammed loop to adpcm_loop since it is only used for adpcm decoding.
Rewrite mix_buffers.
Fix: left/right order in envmixer and setbuff audio command (ABI1).
dry/wet are now lowecase.
Rewrote interleave_buffers. Fix L/R order.