How to add a header to PhotoshopRAW file format ?

[rechmbrs]

I need to add a header to PhotoshopRaw files I'm writing but have found no information on how it is done.  There is a parameter to specify the header length  N (in bytes I guess) but does the header overlay the first N bytes or is it before the start of the file making the file width X height X number of channels X bytes per channel + N in length.

Thanks,

RONC

[JJMack]

From what I read is this link Photoshop RAW format has no header. Photoshop RAW File Format

[r-bin · Accepted solution]

try this AM code

function save_as_raw(file, hdr_len)
    {
    try {
        var d = new ActionDescriptor();
        var d1 = new ActionDescriptor();
        d1.putString(stringIDToTypeID("fileCreator"), "8BIM");
        if (hdr_len) d1.putInteger(stringIDToTypeID("header"), hdr_len);  
        d1.putBoolean(stringIDToTypeID("channelsInterleaved"), true);
        d1.putEnumerated(stringIDToTypeID("byteOrder"), stringIDToTypeID("platform"), stringIDToTypeID("IBMPC"));
        d.putObject(stringIDToTypeID("as"), stringIDToTypeID("rawFormat"), d1);
        d.putPath(stringIDToTypeID("in"), file);
        d.putBoolean(stringIDToTypeID("copy"), true);
        d.putBoolean(stringIDToTypeID("spot"), false);
        d.putBoolean(stringIDToTypeID("alphaChannels"), false);
        executeAction(stringIDToTypeID("save"), d, DialogModes.NO);
        }
    catch (e) { throw(e); }
    }

UPD.

The header (zeros) will be at the beginning of the file. I have so. Why this header I do not know.