gistfile1.txt

meta:
  id: ffli
  file-extension: dat
  endian: be

seq:
  - id: resource
    type: resource

enums:
  resource_type:
    1: texture
    2: mesh

types:
  resource:
    seq:
      - id: header
        type: header
      - id: texture_header
        type: texture_header
      - id: mesh_header
        type: mesh_header
  header:
    seq:
      - id: magic
        contents: "FFRA"
      - id: version
        type: u4
      - id: unk1
        type: u4
      - id: uncompressed_size
        type: u4
      - id: unk2
        contents: [0, 0, 0, 0]
  texture:  
      seq:
        - id: data
          size: _io.size - 12
        - id: mipmap_offset
          type: u4
        - id: width
          type: u2
        - id: height
          type: u2
        - id: mipmap_count
          type: u1
        - id: texture_format
          type: u1
        - id: unk1
          type: u2
      instances:
        area:
          value: 'width * height * (texture_format == 0 ? 1 : texture_format * 2)'
        pixels:
          pos: 0
          size: area
  texture_header:
    seq:
      - id: max_sizes
        type: u4
        repeat: expr
        repeat-expr: 11
      - id: textures
        type: resource_part(ffli::resource_type::texture)
        repeat: expr
        repeat-expr: 365
        
  mesh_header:
    seq:
      - id: max_size
        type: u4
        repeat: expr
        repeat-expr: 12
      - id: meshes
        type: resource_part(ffli::resource_type::mesh)
        repeat: expr
        repeat-expr: 859
  resource_part:
    seq:
      - id: offset
        type: u4
      - id: uncompressed_size
        type: u4
      - id: compressed_size
        type: u4
      - id: unk1
        type: u1
      - id: unk2
        type: u1
      - id: unk3
        type: u1
      - id: compression_type
        type: u1
    params:
      - id: resource_type
        type: u2
        enum: 'ffli::resource_type'
    types:
      compressed:
        params:
          - id: resource_type
            type: u2
            enum: 'ffli::resource_type'
        seq:
          - id: data
            process: zlib
            type:
              switch-on: resource_type
              cases:
                'ffli::resource_type::texture': texture
                'ffli::resource_type::mesh': mesh
            size-eos: true
      uncompressed:
        params:
          - id: resource_type
            type: u2
            enum: 'ffli::resource_type'
        seq:
          - id: data
            type:
              switch-on: resource_type
              cases:
                'ffli::resource_type::texture': texture
                'ffli::resource_type::mesh': mesh
            size-eos: true
    instances:
      is_compressed:
        value: (not compression_type == 5 or not compression_type > 100) and compressed_size != 0
      body:
        pos: offset
        size: compressed_size
        type:
          switch-on: is_compressed
          cases:
            true: compressed(resource_type)
            false: uncompressed(resource_type)
  mesh:
    seq: []