MAX

Status

What it is

MAX is tracked as an older Pfaff-related embroidery lead. The extension collides with many non-embroidery formats, so it needs strong identification before support.

Satin Studio behavior

Satin Studio documents this format for identification and inspection. It does not open or export the file.

Versions and variants

Unknown.

File identification notes

No trusted byte structure is documented here yet.

Observed structure notes

• Observed MAX readers seek to offset 0xD5, read a little-endian 32-bit stitch count, then read absolute points.
• Observed point layout is 24-bit little-endian X, one control byte, 24-bit little-endian Y, and one control byte. Coordinates are signed 24-bit values scaled by an observed factor near 1.235.
• Observed readers treat the records as absolute stitch points; command semantics remain weakly documented.

Structure sketch

Observed MAX files use absolute 24-bit coordinates after an offset header:

struct MaxCandidate<'a> {
    prefix: [u8; 0xD5],
    stitch_count: u32,
    records: &'a [MaxPointRecord],
}

struct MaxPointRecord {
    x_le24: [u8; 3],                   // signed 24-bit little-endian
    control0: u8,
    y_le24: [u8; 3],                   // signed 24-bit little-endian
    control1: u8,
}

Compatibility evidence

The notes above help identify and inspect the format; they do not imply import or export support. Keep the original file and record the machine and software that produced it.