_ReadRLE16
ret = _ReadRLE16((uint16*)row, (uint16*)rleBuffer, fWidth);
if ((fARLELength = _ReadRLE16(arleRow, fWidth)) < B_OK) {
ssize_t _ReadRLE16(uint16* row, int32 numPixels) const;
ssize_t _ReadRLE16(uint16* row, uint16* rleBuffer, int32 numPixels) const;