4.4 KiB
XA playback
You need mkpsxiso in your $PATH to generate a PSX disk image.
You also need psxavenc and xainterleave.
Generate interleaved XA file
psxavenc -f 37800 -t xa -b 4 -c 2 -F 1 -C 0 "../hello_cdda/audio/beach.wav" "xa/beach.xa"
psxavenc -f 37800 -t xa -b 4 -c 2 -F 1 -C 0 "../hello_cdda/audiofunk.wav" "xa/funk.xa"
xainterleave 1 xa/interleave4.txt xa/inter4.xa
xainterleave 1 xa/interleave8.txt xa/inter8.xa
Alternatively, you can use the windows tool MC32.EXE to interleave several PSX media files.
Compile
This will compile and build an iso image :
make
Clean directory
make cleansub
Encoding to XA
You can use a modified version of psxavenc to convert your audio file to a 2336 bytes XA file :
./psxavenc -f 37800 -t xa -b 4 -c 2 -F 1 -C 1 "input.wav" "output.xa"
You can read it back with XAPLAY.EXE, that's in psyq/bin/XAplay.
PSXavenc usage
./psxavenc
Usage: psxavenc [-f freq] [-b bitdepth] [-c channels] [-F num] [-C num] [-t xa|xacd|spu|str2] <in> <out>
-f freq Use specified frequency
-t format Use specified output type:
xa [A.] .xa 2336-byte sectors
xacd [A.] .xa 2352-byte sectors
spu [A.] raw SPU-ADPCM data
str2 [AV] v2 .str video 2352-byte sectors
-b bitdepth Use specified bit depth (only 4 bits supported)
-c channels Use specified channel count (1 or 2)
-F num [.xa] Set the file number to num (0-255)
-C num [.xa] Set the channel number to num (0-31)
Interleaving XA files
You can use MC32.EXE or xainterleave to interleave several PSX media files.
xainterleave usage
xainterleave <mode> <in.txt> <out.raw>
mode can be 0 for full raw sectors or 1 for just XA (divisible by 2336)
in.txt is a manifest txt file as seen here
Example for 1 music file, to be played at 1x CD speed (4 channels):
1 xa test.xa 1 0
1 null
1 null
1 null
Add 4 more 1 null lines for 2x (8 channels).
1 xa menu.xa 1 0
sectors type file xa_file number (0-255) xa_channel number (0-31)
The format seems to correspond to the entry_t struct.
mkpsxiso
You can use the following syntax to include your XA file in the CD image :
<file name="mymusic1.xa" type="xa" source="mymusic1.xa"/>
See here for more details : c44b78e37b/examples/example.xml (L85)
PsyQ XA Tools
XAPLAY.EXE : Single channel XA playback
XATOOL.EXE : XA structure inspector
MC32.EXE : Converts WAV > XA > Interleaved XA
More
XA tutorial : http://psx.arthus.net/code/XA/XATUT.pdf
Full XAtut archive : http://psx.arthus.net/code/XA/xatut.zip
XA ADPCM documentation : http://psx.arthus.net/code/XA/XA%20ADPCM%20documentation.txt
https://psx-spx.consoledev.net/cdromdrive/#cdrom-xa-audio-adpcm-compression
PsyQ XA player example : psyq/addons/scee/CD/XAPLAYER
XA SCEE Technical note - July 1998 : http://psx.arthus.net/sdk/Psy-Q/DOCS/CONF/SCEE/98July/xa_sound.pdf
PSX audio tools : https://forum.xentax.com/viewtopic.php?t=10136
PIMP tools : https://psx.arthus.net/tools/pimp-psx.zip
Source : https://discord.com/channels/642647820683444236/663664210525290507/843211084609617930
Music credits
Track 1 : Beach Party by Kevin MacLeod Link: https://incompetech.filmmusic.io/song/3429-beach-party License: https://filmmusic.io/standard-license
Track 2: Funk Game Loop by Kevin MacLeod Link: https://incompetech.filmmusic.io/song/3787-funk-game-loop License: https://filmmusic.io/standard-license