# `TuningFork.Xwma.Decoder`
[🔗](https://github.com/jaman/tuning_fork/blob/v0.1.12/tuning_fork/lib/tuning_fork/xwma/decoder.ex#L1)

A way to decode xWMA. `TuningFork.Xwma.decode/1` asks each decoder in its list (see
`TuningFork.Xwma`) whether it is available, and decodes with the first that is.

A package that decodes xWMA itself provides a module implementing this behaviour; one
named `TuningFork.Wma` is found without configuration.

# `available?`

```elixir
@callback available?() :: boolean()
```

Whether this decoder can run on this machine.

# `decode`

```elixir
@callback decode(riff :: binary()) ::
  {:ok, binary(), %{rate: pos_integer(), channels: pos_integer()}}
  | {:error, term()}
```

The audio of an `.xwma` file (as `TuningFork.Xwma.riff/2` builds) as signed 16-bit
little-endian interleaved PCM, with its rate and channel count.

---

*Consult [api-reference.md](api-reference.md) for complete listing*