Remote NetMD SP upload fails because SPS is not mapped to SP

[yooamatwa-pixel]

Hi, thanks for making this awesome tool.

I’ve been experimenting with Remote NetMD and encountered an issue when uploading tracks in SP Stereo.

When uploading an SP Stereo track through a Remote NetMD device, the browser encryption worker crashes with:

RangeError: Invalid array length

LP2 uploads work correctly.

The Remote NetMD server receives the SP upload request as:

/upload/.websocket?...&format=SPS

The issue appears to be in src/services/interfaces/remote-netmd.ts.

The remote upload path explicitly converts ATRAC3 formats:

AT3 / 132 → LP2
AT3 / 66 → LP4

However, non-AT3 formats are passed through unchanged. This means SP Stereo remains SPS rather than being converted to the NetMD wire format SP.

Later, the code uses:
WireformatDict[format.codec]

However, WireformatDict contains SP, LP2, LP105, and LP4, but not SPS or SPM.

As a result, an SP Stereo upload attempts to access:

WireformatDict['SPS']

which returns undefined and eventually causes the encryption worker to throw:

RangeError: Invalid array length

I tested the following change:

const format =
    _format.codec === 'AT3'
        ? { codec: _format.bitrate === 66 ? 'LP4' : 'LP2' }
        : _format.codec === 'SPS' || _format.codec === 'SPM'
          ? { codec: 'SP' }
          : _format;

After applying this locally and rebuilding Web MiniDisc, an SP Stereo upload completed successfully through Remote NetMD.

I have only directly tested SPS; SPM appears likely to be affected by the same issue.

Thanks!