request: VGM pattern

[ghost]

Hi

I would like to request a VGM pattern (video game music)
You can see the header here

https://vgmrips.net/wiki/VGM_Specification

I'm a total beginner and can't make this myself :(
I hope somebody can create this pattern (for latest VGM version)

[itsmeow]

I think a lot of pattern-writers are/were beginners once! I'd suggest taking a look at some other simple patterns to learn how it works and modify it as you go. I was able to make a basic one with no prior experience other than the documentation and the existing pattern files.

[paxcut]

I looked at the specification for VGM and that's a fairly complex format. For what purpose do you need the ImHex pattern?

[ghost]

I looked at the specification for VGM and that's a fairly complex format. For what purpose do you need the ImHex pattern?

Exactly what you say: it's complex and i want to learn it using a pattern for imhex.
So that's why i'm interested in a pattern.

[WerWolv]

To me the format looks fairly straight forward. It's just large.
My recommendation is to just start slow, maybe write a pattern that just parses the header and some of the data after it. Then once you got more comfortable, implement all the structs whose offsets are stored in the header.

As an example, I'd start like this:

#include <type/magic.pat>

struct Header {
    type::Magic<"Vgm "> ident;
    u32 eofOffset;
    u32 version;
    // ...
};

struct VGM {
    Header header;
}:

VGM vgm @ 0x00;

[paxcut]

The complexity of the format far surpasses the complexity of the concepts needed to write a pattern in general. The absolute best way to learn a complex format is to write the pattern for it so that you learn all the intricacies of how the data is stored.

To me the format looks fairly straight forward.

Emphasis should be placed in the 'To me' part. To me a simple format is one I can read once and have a mental image of it. I couldn't do that with this one. But I second the recommendation. Learning the basics of pattern language is not difficult at all but rather easy instead.