// ==ByteBeat==
// ^ above line must be exactly like that and be first.
// this header contains metadata for the song
// specify fields with lines like "// @field-name field-value"
// JSON strings are parsed.  you can put in fields not recognized
// by libbytebeat, in which case they will be passed to the library
// user. fields from https://ffmpeg.org/doxygen/7.0/group__metadata__api.html
// can be recognized by media players, for example.
// all fields recognized by libbytebeat come with defaults, shown below
//
//
// Playback mode. Possible values:
// - bytebeat : 0..255 ints, wrapped
// - sbytebeat : -128..127 ints, wrapped
// - floatbeat : -1..1 floats, clamped
// - funcbeat : floatbeat but you return a function(t, freq); statement mode
// - chunkbeat : custom libbytebeat format.
//   statement mode just like funcbeat, but you return an object in this form:
//   {
//     // number of channels
//     channels: int,
//
//     //
//     // write `t .. t + len` floatbeat samples to `buf` with channels
//     // interleaved
//     //
//     // return an optional data for use in `postproc` (which is run on a
//     // separate JS environment)
//     //
//     // this function will be run in a "parallelized" fashion across multiple
//     // separate JS environments, do not rely on continuity of t
//     // (unless @parallel no)
//     //
//     read: function(
//        t: int, freq: number,
//        buf: Float32Array, len: int,
//
//        //
//        // instead of throwing, pass errors into this function as the msg
//        // argument
//        //
//        logger: function(msg: any, t: int)
//     ): Uint8Array|ArrayBuffer|nullish,
//
//     //
//     // like `read`, but single-threaded. during normal playback you can rely on
//     // t being continuous.  `udata` contains the data returned from `read`
//     //
//     postproc: function(
//         t: int, freq: number,
//         buf: Float32Array, len: int,
//         logger: function(msg: any, t: int),
//         udata: Uint8Array|nullish
//   }
//
//   it is recommended that the object you return is also a function compatible
//   with funcbeat, so that other players can play your song too.
//
// @mode bytebeat
//
//
// Sample rate
//
// @freq 8000
//
//
// Length of the song, in samples
//
// @len Infinity
//
//
// Set this to "no" if your code depends on side effects from
// previous samples, and doesn't work with constant jumps of
// `t` well.
//
// @parallel yes
//
//
// Set this to "no" if your code doesn't work with jumps of `t`
// at all. For example "Time Is A Suggestion", where `t` is not
// used at all and the song just guesses the correct value.
//
// @seekable yes
//
//
// If enabled, upscales the song to 48kHz with nearest neighbor.
// By default enabled if sample rate is below 44100.
//
// @f48k auto
//
//
// If enabled passes the entire song through a high-pass filter
// with a pass frequency of like 15 Hz. This ensures that the
// wavefront is centered at the, well, center. You may disable
// this if your song outputs a properly centered wave.
//
// @dcClean yes
//
//
// If you output textual graphics by throwing errors, set this
// to the dimensions of the virtual "screen", in characters,
// e.g. 80x25
//
// @term
//
// -- metadata of this song below --
//
// @title "Combined xpansive's and varjohukka's stuff"
// @artist viznut
// @comment remix of Lost in Space by xpansive
// ^^ these 3 tags are used by ffmpeg demuxer and mpv
//
// @len 524288
//
// ==/ByteBeat==

(t>>7|t|t>>6)*10+4*(t&t>>13|t>>6)