meta:
  id: wav
  file-extension: wav
  encoding: ascii
  endian: le
seq:
  - id: magic
    type: str
    size: 4
  - id: size
    type: u4
  - id: wave_str
    type: str
    size: 4
  - id: sections
    type: section
    repeat: eos
instances: {}
types:
  section:
    seq:
      - id: name
        type: str
        size: 4
      - id: size
        type: u4
      - id: content
        size: size
        type:
          switch-on: name
          cases:
            '"fmt "': fmt
            '"data"': data
  fmt:
    seq:
      - id: type
        type: u2
      - id: channels
        type: u2
      - id: samplerate
        type: u4
      - id: datarate
        type: u4
        doc: Might also be datarate per channel
      - id: bytes_per_sample
        type: u2
      - id: bits_per_unit
        type: u2
    instances:
      combined_type:
        value: type * 100 + bits_per_unit
  data:
    seq:
      - id: content
        type: sample
        repeat: eos
    types:
      sample:
        seq:
          - id: data
            type: 
              switch-on: _root.sections[0].content.\
                as<fmt>.combined_type
              cases:
                332: f4
                108: u1
                116: s2
                132: s4
            repeat: expr
            repeat-expr: _root.sections[0].content.\
              as<fmt>.channels
enums: {}
doc: Hello, world
doc-ref: https://example.com