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README.md

gctools

gctools is a set of tools for reading and translating video game files. These tools can understand:

  • AFS archives from various Sega games (afsdump)
  • GCM and TGC GameCube disc images (gcmdump)
  • GSL files from Phantasy Star Online (gsldump)
  • GVM files from Phantasy Star Online (gvmdump)
  • RCF files from The Simpsons: Hit and Run (rcfdump)
  • PAE files from Phantasy Star Online Episode III (pae2gvm)
  • PRS files from Phantasy Star Online (prs)
  • Yay0 and Yaz0 files from various Nintendo games (prs)
  • AAF, BX, and AW files from Super Mario Sunshine, Luigi's Mansion, Pikmin, and other games (smsdumpbanks, smssynth)
  • MIDI, INST, SONG, and related resources from classic Macintosh games (smssynth)

Building

The tools

afsdump - extracts all files in an AFS archive to the current directory. Works with AFS archives found in several Sega games.

  • Example: mkdir out && cd out && afsdump ../archive.afs

gcmdump - extracts all files in a GCM file (GameCube disc image) or TGC file (embedded GameCube disc image) to the current directory. You can force formats with the --gcm or --tgc options (by default gcmdump will try to figure out the file format itself).

  • Example: mkdir out && cd out && gcmdump ../image.gcm

gsldump - extracts all files in a GSL archive to the current directory. This format was used in multiple versions of Phantasy Star Online for various game parameters.

  • Example: mkdir out && cd out && gsldump ../archive.gsl

gvmdump - extracts all files in a GVM archive to the current directory, and converts the GVR textures to Windows BMP files if they use pixel formats that gvmdump understands (which is not all of them). Also can decode individual GVR files outside of a GVM archive.

  • Example: mkdir out && cd out && gvmdump ../archive.gvm

rcfdump - extracts all files in a RCF archive to the current directory.

  • Example: mkdir out && cd out && rcfdump ../archive.rcf

pae2gvm - extracts the embedded GVM from a PAE file. The decompressed PAE data is saved as .dec; the output GVM is saved as .gvm.

  • Example: pae2gvm file.pae

prs/prs - decompresses data in PRS, Yay0, and Yaz0 formats, or compresses data in PRS format.

  • Example (decompress PRS): prs -d < file.prs > file.bin
  • Example (compress PRS): prs < file.bin > file.prs
  • Example (decompress Yay0): prs --yay0 -d < file.yay0 > file.bin
  • Example (decompress Yaz0): prs --yaz0 -d < file.yaz0 > file.bin

sms/smsdumpbanks - extracts the contents of instrument and waveform banks in AAF, BX, or BAA format. Games using this format include Luigi's Mansion, Pikmin, and Super Mario Sunshine. Produces text files describing the instruments, uncompressed .wav files containing the sounds, and .bms files containing the music sequences. Before running this program, do the steps in the "Getting auxiliary files" section below.

  • Example: mkdir sms_decoded_data && smsdumpbanks sms_extracted_data/AudioRes sms_decoded_data

sms/smssynth - synthesizes and debugs music sequences in BMS or MIDI format. There are many ways to use smssynth; see the next section.

Using smssynth

smssynth deals with BMS and MIDI music sequence programs. It can disassemble them, convert them into .wav files, or play them in realtime. The implementation is based on reverse-engineering multiple games and not on any official source code, so sometimes the output sounds a bit different from the actual in-game music.

Usage for GameCube and Wii games

Before running smssynth, you may need to do the steps in the "Getting auxiliary files" section below. Also, for sequences that loop, smssynth will run forever unless you hit Ctrl+C or give a time limit.

Once you have the necessary files, you can find out what the available sequences are with the --list option, play sequences with the --play option, or produce WAV files from the sequences with the --output-filename option.

Here are some usage examples for GameCube games:

  • List all the sequences in Luigi's Mansion: smssynth --audiores-directory=luigis_mansion_extracted_data/AudioRes --list
  • Convert Bianco Hills (from Super Mario Sunshine) to 4-minute WAV, no Yoshi drums: smssynth --audiores-directory=sms_extracted_data/AudioRes k_bianco.com --disable-track=15 --output-filename=k_bianco.com.wav --time-limit=240
  • Play Bianco Hills (from Super Mario Sunshine) in realtime, with Yoshi drums: smssynth --audiores-directory=sms_extracted_data/AudioRes k_bianco.com --play
  • Play The Forest Navel (from Pikmin) in realtime: smssynth --audiores-directory=pikmin_extracted_data/dataDir/SndData --play cave.jam

Usage for Classic Mac OS games

smssynth can also disassemble and play MIDI files. This was implemented to synthesize the Classic Mac OS version of SimCity 2000's music using the original instruments, which wouldn't play on any MIDI player I tried. Some other Classic Mac OS games use the same library (SoundMusicSys), and most of these games' music resources now work with smssynth as well. To play these sequences, provide a JSON environment file produced by resource_dasm. Make sure not to move or rename any of the other files in the same directory as the JSON file, or it may not play properly.

SoundMusicSys environments have a lot of options, which resource_dasm packages up into a JSON file. You can produce an appropriate JSON file by running resource_dasm like resource_dasm "Creep Night Demo Music" ./creep_night.out. This will produce a JSON file for each SONG resource contained in the input file.

After doing this, you can play the songs with (for example) smssynth --json-environment="./creep_night.out/Creep Night Demo Music_SONG_1000_smssynth_env.json" --play. The --disassemble and --output-filename options also work when using JSON files (like for JAudio/BMS), but --list does not.

Compatibility

I've tested smssynth with the following GameCube games that use JAudio/BMS:

  • Most Luigi's Mansion songs sound close to in-game audio, but a few instruments are clearly wrong and some effects are missing. I think this makes the staff roll sequence sound cooler, but I still intend to fix it.
  • Mario Kart: Double Dash!! songs work; some volume effects appear to be missing so they sound a little different.
  • Most Pikmin songs sound a little different from how they sound in-game but are easily recognizable.
  • Almost all Super Mario Sunshine songs sound perfect (exactly as they sound in-game). Note that the game uses track 15 for Yoshi's drums; use --disable-track=15 if you don't want them.

I've tested with a couple of Wii games, but not extensively:

  • Many songs from The Legend of Zelda: Twilight Princess and Super Mario Galaxy don't play or sound terrible. Some are recognizable but don't sound like the in-game music.

Classic Mac OS games that use SoundMusicSys currently fare much better than GameCube and Wii games:

  • After Dark songs play mostly correctly, but some seem to rely on SMOD effects that aren't implemented.
  • Castles - Siege and Conquest songs play correctly.
  • Creep Night Pinball songs play correctly.
  • DinoPark Tycoon songs play correctly.
  • Flashback songs play correctly.
  • Monopoly CD-ROM songs play flawlessly. The original SoundMusicSys implementation drops some notes when playing some of these songs; smssynth doesn't drop notes and the songs sound much more complete.
  • Odell Down Under songs play correctly.
  • Prince of Persia songs play correctly.
  • Prince of Persia 2 songs play mostly correctly. There are no SONG resources in this game; instead, use mohawk_dasm (part of resource_dasm) to get the MIDI files from NISMIDI.dat and MIDISnd.dat and use the template JSON environment generated by resource_dasm from the game application.
  • SimCity 2000 songs play correctly.
  • SimTown songs probably play correctly, but I only have the demo so I only tested the one song in the demo.
  • Snapdragon songs play correctly.
  • The Amazon Trail songs play correctly.
  • The Yukon Trail songs play correctly.
  • Troggle Trouble Math songs play correctly.
  • Ultimate Spin Doctor songs play correctly.
  • The Widget Workshop song plays correctly.

Getting auxiliary files from GameCube games

Luigi's Mansion should work without any modifications. Just point --audiores-directory at the directory extracted from the disc image.

Getting msound.aaf from Super Mario Sunshine

You'll have to copy msound.aaf into the AudioRes directory manually to use the Super Mario Sunshine tools. To do so:

  • Get nintendo.szs from the disc image (use gcmdump or some other tool).
  • Yaz0-decompress it (you can do this with prs -d --yaz0 < nintendo.szs > nintendo.szs.rarc).
  • Extract the contents of the archive (you can do this with rarcdump).
  • Copy msound.aaf into the AudioRes directory.

Getting sequence.barc from Pikmin

You'll have to manually extract the BARC data from default.dol (it's embedded somewhere in there). Open up default.dol in a hex editor and search for the ASCII string "BARC----". Starting at the location where you found "BARC----", copy at least 0x400 bytes out of default.dol and save it as sequence.barc in the SndData/Seqs/ directory. Now you should be able to run smsdumpbanks and smssynth using the Pikmin sound data. --audiores-directory should point to the SndData directory from the Pikmin disc (with sequence.barc manually added).

Getting Banks directory from Mario Kart: Double Dash

After extracting the AudioRes directory, rename the Waves subdirectory to Banks.

Getting files from The Legend of Zelda: Twilight Princess

The sequences are stored in a compressed RARC file, and don't appear to be listed in the environment index. (This means --list won't work and you'll have to specify a sequence file manually.) To get the sequences:

  • Decompress the sequence file: prs -d --yaz0 < Seqs/Z2SoundSeqs.arc > .Seqs/Z2SoundSeqs.arc.dec
  • Extract the sequences: rarcdump Seqs/Z2SoundSeqs.arc.dec

Getting files from Super Mario Galaxy

Like Twilight Princess, the sequences are stored in a RARC archive, but this time each individual sequence is compressed, and the index is compressed too. Fortunately they're all Yaz0:

  • Decompress the index file: prs -d --yaz0 < SMR.szs > SMR.baa
  • Extract the sequences: rarcdump Seqs/JaiSeq.arc)
  • Decompress the sequences: ls Seqs/JaiSeq.arc_dir/szs/*.szs | xargs -I {} bash -c "prs -d --yaz0 < {} > {}.bms"

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