-- CGAIS.mesa
-- Last changed by Doug Wyatt, August 23, 1982 3:38 pm

-- Definition of AIS file format

CGAIS: DEFINITIONS = {

password: CARDINAL = 102252B;

Header: TYPE = MACHINE DEPENDENT RECORD [
  password(0): CARDINAL,
  attributeLength(1): CARDINAL
  ];

PartType: TYPE = MACHINE DEPENDENT {nil(0),
  raster(1), placement(2), photometry(3), comment(4), (77B)};
  
APH: TYPE = MACHINE DEPENDENT RECORD[ -- Attribute Part Header
  type(0:0..5): PartType,
  length(0:6..15): [0..1777B]
  ];

RasterPart: TYPE = MACHINE DEPENDENT RECORD [
  aph(0): APH,
  scanCount(1): CARDINAL,
  scanLength(2): CARDINAL,
  scanDirection(3): CARDINAL,
  samplesPerPixel(4): CARDINAL,
  codingType(5): CARDINAL
  ];

UCACodingType: CARDINAL = 1;

UCA: TYPE = MACHINE DEPENDENT RECORD [
  bitsPerSample(0): CARDINAL,
  wordsPerScanLine(1): CARDINAL,
  scanLinesPerBlock(2): CARDINAL
  ];

}.