Messages

Ok I think I'm gonna give up with vgmstream and get back to brawllib/brawlbox. I need the decoding algorithms. If you can help me by sending me the file names (and the arguments the functions need), or I will check that in a few days. Thanks.

It's hard to read the vgmstream code, but I feel it contains everything. I am just not sure yet I will be able to play songs.

I decoded most of the HEAD part (by using the numbers displayed in BrawlBox), but I don't find if a song is looped or not (LoopStartSample can be zero for a looped song). Might have an idea but I'm not sure.
I don't understand the code of BrawlBox/BrawlLib so I can't use that, I would need your help for that.
I don't use any server, all is made in Javascript client-side. Normally it's possible, just have to get the algorithms. Web browsers can read 16-bit PCM and normally I can convert these 4-bit ADPCM into 16-bit PCM. I just don't know what to convert yet, and how channels are handled.

EDIT : Yeah, vgmstream really helps. I can read this code.

For now I'm just able to read the header, here is an example:

File Identifier: RSTM
Byte order: Big Endian
Version: 1.0
File size: 1286496
Header size: 64
Channels: 2
HEAD offset: 0x00 0x00 0x00 0x40 (64)
HEAD size: 256
ADPC offset: 0x00 0x00 0x01 0x40 (320)
ADPC size: 640
DATA offset: 0x00 0x00 0x03 0xc0 (960)
DATA size: 1285536
Other: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00

I need to understand the three next blocks (HEAD, ADPC and DATA). The last two blocks are documented in one the link I provided above so I could get the sound. I have the algorithm that should (untested) permit to convert a sound into a playable format. I miss the HEAD part where I'll get the samples to cut the sound (?).

Hi,

I'm creating a RSTM player in Javascript (web), I found two pages to decode the header (1 2), and I miss a specification for the HEAD, ADPC and DATA parts, I'm not sure of what they contain. I know HEAD contains the data I can see in BrawlBox. Apparently ADPCM, is a type of wav, so it should be playable in a browser using the Javascript Audio API, I tried to read the DATA part in my browser and it couldn't be recognized (EDIT: fail it was late, I didn't cut enough). I'm not familiarized with c-sharp so I can't read the BrawlLib source code (here).

My main project is to create a player for the Pokémon GSC musics (looped songs), and I'd prefer to load the .brstm files instead of having 2 audio files that have to be converted, because most of Pokémon songs are available in .brstm on Smash Custom Music. If I succeed, that website could also use this player (I will think to the proper open source license for that.)

I'm also wondering about the right of having such songs downloadable, I think it's a copyright violation, if you could tell me something about it I'd appreciate.

Thanks for your help.

EDIT: Apparently 4-bit IMA ADPCM is not supported in any browsers, have to look into on-the-fly conversion :(

EDIT 2: Found this (page 34) and this. Just need to know what do I have to convert.