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fq/format/id3/id3v11.go
2022-07-19 18:33:50 +02:00

37 lines
717 B
Go

package id3
import (
"github.com/wader/fq/format"
"github.com/wader/fq/pkg/decode"
"github.com/wader/fq/pkg/interp"
"github.com/wader/fq/pkg/scalar"
)
func init() {
interp.RegisterFormat(decode.Format{
Name: format.ID3V11,
Description: "ID3v1.1 metadata",
DecodeFn: id3v11Decode,
})
}
func id3v11Decode(d *decode.D, _ any) any {
d.AssertAtLeastBitsLeft(128 * 8)
d.FieldUTF8("magic", 4, d.AssertStr("TAG+"))
d.FieldUTF8("title", 60)
d.FieldUTF8("artist", 60)
d.FieldUTF8("album", 60)
d.FieldU8("speed", scalar.UToSymStr{
0: "unset",
1: "slow",
2: "medium",
3: "fast",
4: "hardcore",
})
d.FieldUTF8("genre", 30)
d.FieldUTF8("start", 6)
d.FieldUTF8("stop", 6)
return nil
}