This commit is contained in:
bnnm 2021-10-23 13:01:52 +02:00
parent c1b15adc15
commit 14bacc9c59
2 changed files with 51 additions and 18 deletions

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@ -553,7 +553,7 @@ To compile we'll use autotools with GCC preprocessor renaming:
# creates Makefiles with Automake
sh.exe ./configure --build=mingw32 --prefix=/c/celt0.6.1/bin/ --exec-prefix=/c/celt-0.6.1/bin/
# LDFLAGS are needed to create the .dll (Automake whinning)
# LDFLAGS are needed to create the .dll (Automake whining)
# CFLAGS rename a few CELT functions (we don't import the rest so they won't clash)
mingw32-make.exe clean
mingw32-make.exe LDFLAGS="-no-undefined" AM_CFLAGS="-Dcelt_decode=celt_0061_decode -Dcelt_decoder_create=celt_0061_decoder_create -Dcelt_decoder_destroy=celt_0061_decoder_destroy -Dcelt_mode_create=celt_0061_mode_create -Dcelt_mode_destroy=celt_0061_mode_destroy -Dcelt_mode_info=celt_0061_mode_info"
@ -563,7 +563,7 @@ To compile we'll use autotools with GCC preprocessor renaming:
# creates Makefiles with Automake
sh.exe ./configure --build=mingw32 --prefix=/c/celt-0.11.0/bin/ --exec-prefix=/c/celt-0.11.0/bin/
# LDFLAGS are needed to create the .dll (Automake whinning)
# LDFLAGS are needed to create the .dll (Automake whining)
# CFLAGS rename a few CELT functions (notice one is different vs 0.6.1), CUSTOM_MODES is also a must.
mingw32-make.exe clean
mingw32-make.exe LDFLAGS="-no-undefined" AM_CFLAGS="-DCUSTOM_MODES=1 -Dcelt_decode=celt_0110_decode -Dcelt_decoder_create_custom=celt_0110_decoder_create_custom -Dcelt_decoder_destroy=celt_0110_decoder_destroy -Dcelt_mode_create=celt_0110_mode_create -Dcelt_mode_destroy=celt_0110_mode_destroy -Dcelt_mode_info=celt_0110_mode_info"
@ -572,10 +572,12 @@ To compile we'll use autotools with GCC preprocessor renaming:
- you need to create a .def file for those DLL with the renamed simbol names above
- finally the includes. libcelt gives "celt.h" "celt_types.h" "celt_header.h", but since we renamed a few functions we have a simpler custom .h with minimal renamed symbols.
For **Linux**, an option is using AUR's scripts (https://aur.archlinux.org/packages/vgmstream-git/) that similarly patch celt libs in PKGBUILD.
For **Linux**, you can use CMake that similarly patch celt libs automatically.
You can also get them from the official git (https://gitlab.xiph.org/xiph/celt) call `./autogen.sh` first, then pass call configure/make with renames (see `./make-build.sh`).
Instead of passing `-DCUSTOM_MODES=1` to `make` you can pass `--enable-custom-codes` to *./configure*. There is also `--disable-oggtests`, `--disable-static/shared` and typical config. Note that if *./configure* finds Ogg in your system it'll try to build encoder/decoder test `tools` (that depend on libogg). There is no official way disable that or compile `libcelt` only, but you can force it by calling `make SUBDIRS=libcelt DIST_SUBDIRS=libcelt`, in case you have dependency issues.
### libspeex
Adds support for Speex (inside custom containers), used in a few *EA* formats (`.sns`, `.sps`) for voices.
- Source: http://downloads.us.xiph.org/releases/speex/speex-1.2.0.tar.gz

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@ -338,10 +338,11 @@ Regular formats without companion files should work fine in upper/lowercase. For
Certain formats have encrypted data, and need a key to decrypt. vgmstream
will try to find the correct key from a list, but it can be provided by
a companion file:
- `.adx`: `.adxkey` (keystring, 8 byte keycode, or derived 6 byte start/mult/add key)
- `.ahx`: `.ahxkey` (derived 6 byte start/mult/add key)
- `.hca`: `.hcakey` (8 byte decryption key, a 64-bit number)
- May be followed by 2 byte AWB scramble key for newer HCA
- `.adx`: `.adxkey` (keystring, 8-byte keycode, or derived 6 byte start/mult/add key)
- `.ahx`: `.ahxkey` (derived 6-byte start/mult/add key)
- `.hca`: `.hcakey` (8-byte decryption key, a 64-bit number)
- `.awb`/`.acb` also may use `.hcakey`, and will combine with an internal AWB subkey
- May set a 8-byte key followed a 2-byte AWB subkey for newer HCA
- `.fsb`: `.fsbkey` (decryption key in hex, usually between 8-32 bytes)
- `.bnsf`: `.bnsfkey` (decryption key, a string up to 24 chars)
@ -360,22 +361,12 @@ needs.
Creation of these files is meant for advanced users, full docs can be found in
vgmstream source.
#### GENH
A byte header placed right before the original data, modifying it.
The resulting file must be `(name).genh`. Contains static header data.
Programs like VGMToolbox can help to create *GENH*, but consider using *TXTH*
instead, *GENH* is mostly deprecated.
#### TXTH
A text header placed in an external file. The TXTH must be named
`.txth` or `.(ext).txth` (for the whole folder), or `(name.ext).txth` (for a
single file). Contains dynamic text commands to read data from the original
file, or static values. This allows vgmstream to play unsupported formats.
*TXTH* is recommended over *GENH* as it's far easier to create and has many
more functions, plus doesn't modify original data.
Usage example (used when opening an unknown file named `bgm_01.pcm`):
**.pcm.txth**
@ -464,6 +455,16 @@ effect_dlc2.awb: effect.acb
effect_dlc3.awb: effect.acb
```
#### GENH
A byte header placed right before the original data, modifying it.
The resulting file must be `(name).genh`. Contains static header data.
Programs like VGMToolbox can help to create *GENH*, but consider using *TXTH*
instead, *GENH* is mostly deprecated. *TXTH* is recommended over *GENH* as
it's far easier to create and has many more functions, plus doesn't modify
original data.
### Plugin conflicts
Since vgmstream supports a huge amount of formats it's possibly that some of
them are also supported in other plugins, and this sometimes causes conflicts.
@ -496,7 +497,8 @@ adjusted. Most likely it will sound a bit quieter than usual.
You can also choose which channels to play using *TXTP*. For example, create
a file named `song.adx#C1,2.txtp` to play only channels 1 and 2 from `song.adx`.
*TXTP* also has command to set how files are downmixed.
*TXTP* also has command to set how files are downmixed, like `song.adx #@downmix.txtp`
for standard 5.1/4.0/etc audio to stereo, or manual (per-channel) mixing.
### Average bitrate
Note that vgmstream shows the "file bitrate" (counts all data) as opposed to
@ -517,6 +519,35 @@ There are many factors in play like encoder, type of codec, sample rate and so o
A higher bitrate `.wav` can sound worse than a lower `.ogg` (like mono 22050hz `.wav`
vs stereo 48000hz `.ogg`).
### Containers
Some formats are *audio containers* of other common audio formats. For example
`.acb`/`.awb` may contain standard `.hca` inside. Rather than extracting the
internal "files", it's recommended that you keep data unmodified for preservation
purposes. Sometimes containers have useful data (like loop info or names), that
you may be unknowingly throwing away if you extract internal files.
It's a good practice (and simpler) to just let containers be and play them
directly with vgmstream. Newer `.acb`/`.awb` have extra data needed to decrypt
the `.hca`, so if you are already used to those containers you don't need to
worry about extracted `.hca` not working later. Plus you can use TXTH's "subfile"
function to make unsupported containers playable:
```
# Simple container with an Ogg inside. Maybe values 0x00..0x10 could contain
# loops or other useful info, that other users are able to figure out:
subfile_extension = ogg
subfile_offset = 0x10
```
With unmodified data, you can always extract the internal files later if you
change your mind, but you can't get the (potentially useful) container data back
once extracted.
However, if your file is a *generic container* (like a `.zip`, that could hold
graphics or audio) you may safely extract the internal files without worry.
Note that some formats are *audio banks* rather than *containers* (like `.fsb`),
in that info for playing the audio is part of the bank header, and extracting
internal files as-is isn't really possible.
## Logged errors and unplayable supported files
Some formats should normally play, but somehow don't. In those cases plugins