revenant-images-dat-file-format-WIP.ksy

meta:
  id: images
  endian: le
  file-extension: dat

seq:
  - id: magic
    contents: [0x43, 0x47, 0x53, 0x52]

  - id: file_toc
    type: file_toc_block

  # - id: skip
  #   size: 2088 -4

  # - id: images
  #   type: image_block
  #   repeat: eos
    # repeat: expr
    # repeat-expr: file_toc.num_images
    # repeat-expr: 2

types:

  file_toc_block:
    seq:
    - id: num_images1
      type: u2

    - id: unknown_constant1
      type: u1
    - id: unknown_constant2
      type: u1

    - id: unknown_constant3
      type: u4
    - id: unknown_constant4
      type: u4

    - id: empty_space1
      type: u4

    - id: some_data_that_depends_on_num_images1
      type: u4
      repeat: expr
      repeat-expr: num_images1

    - id: num_images2
      type: u4

    # - id: some_data_that_depends_on_num_images2
    #   type: u4
    #   repeat: expr
    #   repeat-expr: num_images2

    # - id: skip2
    #   size: 1008


  image_block:
    seq:
    - id: image_header
      type: img_header

    - id: image_data
      size: image_header.img_size

  img_header:
    seq:
    # - id: unknown3
    #   size: 32
    - id: img_name
      type: str
      terminator: 0
      encoding: utf-8

    - id: str_padding
      size: (4 - _io.pos) % 4 # see https://github.com/kaitai-io/kaitai_struct/issues/12#issuecomment-277757932

    - id: img_width
      type: u4

    - id: img_height
      type: u4

    - id: unknown2
      size: 60

    - id: img_size
      type: u4