vgmstream/doc/FORMATS.md

## Supported file types
As manakoAT likes to say, the extension doesn't really mean anything, but it's
the most obvious way to identify files.

This list is not complete and many other files are supported.

- PS2/PSX ADPCM:
	- .ads/.ss2
	- .ass
	- .ast
	- .bg00
	- .bmdx
	- .ccc
	- .cnk
	- .dxh
	- .enth
	- .fag
	- .filp
	- .gcm
	- .gms
	- .hgc1
	- .ikm
	- .ild
	- .ivb
	- .joe
	- .kces
	- .khv
	- .leg
	- .mcg
	- .mib, .mi4 (w/ or w/o .mih)
	- .mic
	- .mihb (merged mih+mib)
	- .msa
	- .msvp
	- .musc
	- .npsf
	- .pnb
	- .psh
	- .rkv
	- .rnd
	- .rstm
	- .rws
	- .rxw
	- .snd
	- .sfs
	- .sl3
	- .smpl (w/ bad flags)
	- .ster
	- .str+.sth
	- .str (MGAV blocked)
	- .sts
	- .svag
	- .svs
	- .tec (w/ bad flags)
	- .tk5 (w/ bad flags)
	- .vas
	- .vag
	- .vgs (w/ bad flags)
	- .vig
	- .vpk
	- .vs
	- .vsf
	- .wp2
	- .xa2
	- .xa30
	- .xwb+xwh
- GC/Wii/3DS DSP ADPCM:
	- .aaap
	- .agsc
	- .asr
	- .bns
	- .bo2
	- .capdsp
	- .cfn
	- .ddsp
	- .dsp
		- standard, optional dual file stereo
		- RS03
		- Cstr
		- _lr.dsp
		- MPDS
	- .gca
	- .gcm
	- .gsp+.gsp
	- .hps
	- .idsp
	- .ish+.isd
	- .lps
	- .mca
	- .mpdsp
	- .mss
	- .mus (not quite right)
	- .ndp
	- .pdt
	- .sdt
	- .smp
	- .sns
	- .spt+.spd
	- .ssm
	- .stm/.dsp
	- .str
	- .str+.sth
	- .sts
	- .swd
	- .thp, .dsp
	- .tydsp
	- .vjdsp
	- .waa, .wac, .wad, .wam
	- .was
	- .wsd
	- .wsi
	- .ydsp
	- .ymf
	- .zwdsp
- PCM:
	- .aiff (8 bit, 16 bit)
	- .asd (16 bit)
	- .baka (16 bit)
	- .bh2pcm (16 bit)
	- .dmsg (16 bit)
	- .gcsw (16 bit)
	- .gcw (16 bit)
	- .his (8 bit)
	- .int (16 bit)
	- .pcm (8 bit, 16 bit)
	- .kraw (16 bit)
	- .raw (16 bit)
	- .rwx (16 bit)
	- .sap (16 bit)
	- .snd (16 bit)
	- .sps (16 bit)
	- .str (16 bit)
	- .xss (16 bit)
	- .voi (16 bit)
	- .wb (16 bit)
	- .zsd (8 bit)
- Xbox IMA ADPCM:
	- .matx
	- .wavm
	- .wvs
	- .xmu
	- .xvas
	- .xwav
- Yamaha AICA ADPCM:
	- .adpcm
	- .dcs+.dcsw
	- .str
	- .spsd
- IMA ADPCM:
	- .bar (IMA ADPCM)
	- .pcm/dvi (DVI IMA ADPCM)
	- .hwas (IMA ADPCM)
	- .dvi/idvi (DVI IMA ADPCM)
	- .ivaud (IMA ADPCM)
	- .myspd (IMA ADPCM)
	- .strm (IMA ADPCM)
- multi:
	- .aifc (SDX2 DPCM, DVI IMA ADPCM)
	- .asf/as4 (8/16 bit PCM, DVI IMA ADPCM)
	- .ast (GC AFC ADPCM, 16 bit PCM)
	- .aud (IMA ADPCM, WS DPCM)
	- .aus (PSX ADPCM, Xbox IMA ADPCM)
	- .brstm (GC DSP ADPCM, 8/16 bit PCM)
	- .emff (PSX APDCM, GC DSP ADPCM)
	- .fsb/wii (PSX ADPCM, GC DSP ADPCM, Xbox IMA ADPCM, MPEG audio, FSB Vorbis, MS XMA)
	- .msf (PCM, PSX ADPCM, ATRAC3, MP3)
	- .musx (PSX ADPCM, Xbox IMA ADPCM, DAT4 IMA ADPCM)
	- .nwa (16 bit PCM, NWA DPCM)
	- .p3d (Radical ADPCM, Radical MP3, XMA2)
	- .psw (PSX ADPCM, GC DSP ADPCM)
	- .rwar, .rwav (GC DSP ADPCM, 8/16 bit PCM)
	- .rws (PSX ADPCM, XBOX IMA ADPCM, GC DSP ADPCM, 16 bit PCM)
	- .rwsd (GC DSP ADPCM, 8/16 bit PCM)
	- .rsd (PSX ADPCM, 16 bit PCM, GC DSP ADPCM, Xbox IMA ADPCM, Radical ADPCM)
	- .rrds (NDS IMA ADPCM)
	- .sad (GC DSP ADPCM, NDS IMA ADPCM, Procyon Studios NDS ADPCM)
	- .sgd/sgb+sgh/sgx (PSX ADPCM, ATRAC3plus, AC3)
	- .seg (Xbox IMA ADPCM, PS2 ADPCM)
	- .sng/asf/str/eam/aud (8/16 bit PCM, EA-XA ADPCM, PSX ADPCM, GC DSP ADPCM, XBOX IMA ADPCM, MPEG audio, EALayer3)
	- .strm (NDS IMA ADPCM, 8/16 bit PCM)
	- .sb0..7 (Ubi IMA ADPCM, GC DSP ADPCM, PSX ADPCM, Xbox IMA ADPCM, ATRAC3)
	- .swav (NDS IMA ADPCM, 8/16 bit PCM)
	- .xwb (PCM, Xbox IMA ADPCM, MS ADPCM, XMA, XWMA, ATRAC3)
	- .xwb+xwh (PCM, PSX ADPCM, ATRAC3)
	- .wav/lwav (unsigned 8 bit PCM, 16 bit PCM, GC DSP ADPCM, MS IMA ADPCM, XBOX IMA ADPCM)
	- .wem [lwav/logg/xma] (PCM, Wwise Vorbis, Wwise IMA ADPCM, XMA, XWMA, GC DSP ADPCM, Wwise Opus)
- etc:
	- .2dx9 (MS ADPCM)
	- .aax (CRI ADX ADPCM)
	- .acm (InterPlay ACM)
	- .adp (GC DTK ADPCM)
	- .adx (CRI ADX ADPCM)
	- .afc (GC AFC ADPCM)
	- .ahx (MPEG-2 Layer II)
	- .aix (CRI ADX ADPCM)
	- .at3 (Sony ATRAC3 / ATRAC3plus)
	- .aud (Silicon Knights Vorbis)
	- .baf (PSX configurable ADPCM)
	- .bgw (PSX configurable ADPCM)
	- .bnsf (G.722.1)
	- .caf (Apple IMA4 ADPCM, others)
	- .dec/de2 (MS ADPCM)
	- .hca (CRI High Compression Audio)
	- .pcm/kcey (DVI IMA ADPCM)
	- .lsf (LSF ADPCM)
	- .mc3 (Paradigm MC3 ADPCM)
	- .mp4/lmp4 (AAC)
	- .msf (PCM, PSX ADPCM, ATRAC3, MP3)
	- .mtaf (Konami ADPCM)
	- .mta2 (Konami XAS-like ADPCM)
	- .mwv (Level-5 0x555 ADPCM)
	- .ogg/logg (Ogg Vorbis)
	- .ogl (Shin'en Vorbis)
	- .rsf (CCITT G.721 ADPCM)
	- .sab (Worms 4 soundpacks)
	- .s14/sss (G.722.1)
	- .sc (Activision EXAKT SASSC DPCM)
	- .scd (MS ADPCM, MPEG Audio, 16 bit PCM)
	- .sd9 (MS ADPCM)
	- .smp (MS ADPCM)
	- .spw (PSX configurable ADPCM)
	- .stm/lstm [amts/ps2stm/stma] (16 bit PCM, DVI IMA ADPCM, GC DSP ADPCM)
	- .str (SDX2 DPCM)
	- .stx (GC AFC ADPCM)
	- .ulw (u-Law PCM)
	- .um3 (Ogg Vorbis)
	- .xa (CD-ROM XA audio)
	- .xma (MS XMA/XMA2)
	- .sb0/sb1/sb2/sb3/sb4/sb5/sb6/sb7 (many)
	- .sm0/sm1/sm2/sm3/sm4/sm5/sm6/sm7 (many)
	- .bao/pk (many)
- artificial/generic headers:
	- .genh (lots)
	- .txth (lots)
- loop assists:
	- .mus (playlist for .acm)
	- .pos (loop info for .wav)
	- .sli (loop info for .ogg)
	- .sfl (loop info for .ogg)
- other:
	- .adxkey (decryption key for .adx)
	- .ahxkey (decryption key for .ahx)
	- .hcakey (decryption key for .hca)
	- .fsbkey (decryption key for .fsb)
	- .bnsfkey (decryption key for .bnsf)
	- .txtp (per song segment/layer handler and player configuration)


## Supported codec types
Quick list of most codecs vgmstream supports, including many obscure ones that
are used in few games.

- PCM 16-bit
- PCM 8-bit (signed, unsigned)
- PCM 4-bit (signed, unsigned)
- PCM 32-bit float
- u-Law/a-LAW
- CRI ADX (standard, fixed, exponential, encrypted)
- Nintendo DSP ADPCM a.k.a GC ADPCM
- Nintendo DTK ADPCM
- Nintendo AFC ADPCM
- ITU-T G.721
- CD-ROM XA ADPCM
- Sony PSX ADPCM a.k.a VAG (standard, badflags, configurable, extended)
- Sony HEVAG
- Electronic Arts EA-XA (stereo, mono, Maxis)
- Electronic Arts EA-XAS (v0, v1)
- DVI/IMA ADPCM (stereo/mono + high/low nibble, 3DS, Quantic Dream, SNDS, etc)
- Microsoft MS IMA ADPCM (standard, Xbox, NDS, Radical, Wwise, FSB, WV6, etc)
- Microsoft MS ADPCM (standard, Cricket Audio)
- Westwood VBR ADPCM
- Yamaha ADPCM (AICA, Aska)
- Procyon Studio ADPCM
- Level-5 0x555 ADPCM
- lsf ADPCM
- Konami MTAF ADPCM
- Konami MTA2 ADPCM
- Paradigm MC3 ADPCM
- FMOD FADPCM 4-bit ADPCM
- Konami XMD 4-bit ADPCM
- Platinum 4-bit ADPCM
- Argonaut ASF 4-bit ADPCM
- Tantalus 4-bit ADPCM
- Ocean DSA 4-bit ADPCM
- Circus XPCM ADPCM
- Circus XPCM VQ
- OKI 4-bit ADPCM (16-bit output, 4-shift, PC-FX)
- Ubisoft 4/6-bit ADPCM
- Tiger Game.com ADPCM
- LucasArts iMUSE VBR ADPCM
- CompressWave (CWav) Huffman ADPCM
- SDX2 2:1 Squareroot-Delta-Exact compression DPCM
- CBD2 2:1 Cuberoot-Delta-Exact compression DPCM
- Activision EXAKT SASSC DPCM
- Xilam DERF DPCM
- InterPlay ACM
- VisualArt's NWA
- Electronic Arts MicroTalk a.k.a. UTK or UMT
- Relic Codec
- CRI HCA
- tri-Ace PS2 Codec
- Xiph Vorbis (Ogg, FSB5, Wwise, OGL, Silicon Knights)
- MPEG MP1/2/3 (standard, AHX, XVAG, FSB, AWC, P3D, EA, etc)
- ITU-T G.722.1 annex C a.k.a. Polycom Siren 14 (Namco)
- ITU-T G.719 annex B a.k.a. Polycom Siren 22
- Electronic Arts EASpeex
- Electronic Arts EALayer3
- Electronic Arts EA-XMA
- Sony ATRAC3, ATRAC3plus
- Sony ATRAC9
- Microsoft XMA1/2
- Microsoft WMA v1, WMA v2, WMAPro
- AAC
- Bink
- AC3/SPDIF
- Xiph Opus (Ogg, Switch, EA, UE4, Exient)
- Xiph CELT (FSB)
- Musepack
- FLAC
- Others

Sometimes standard codecs come in non-standard layouts that aren't normally
supported by other players (like multiple `.ogg` or `.mp3` files chunked and
interleaved together in custom ways).

Some codecs are not fully correct compared to the games due to minor bugs, but
in most cases it isn't audible, and general accuracy is high, with emphasis in
proper support of encoder delay, accurate sample counts and seeking that other
plugins may lack.

Note that vgmstream doesn't (can't) reproduce in-game music 1:1, as internal
resampling, filters, volume, etc, are not replicated.