///|
/// AV1 default scan tables for square transforms below 32x32.
/// Transcribed from the AOMedia AV1 specification scan tables via go-av1;
/// see THIRD_PARTY_NOTICES.md.
let av1_scan_default_4 : Array[Int] = [
  0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15,
]

///|
let av1_scan_default_8 : Array[Int] = [
  0, 1, 8, 16, 9, 2, 3, 10, 17, 24, 32, 25, 18, 11, 4, 5, 12, 19, 26, 33, 40, 48,
  41, 34, 27, 20, 13, 6, 7, 14, 21, 28, 35, 42, 49, 56, 57, 50, 43, 36, 29, 22, 15,
  23, 30, 37, 44, 51, 58, 59, 52, 45, 38, 31, 39, 46, 53, 60, 61, 54, 47, 55, 62,
  63,
]

///|
let av1_scan_default_16 : Array[Int] = [
  0, 1, 16, 32, 17, 2, 3, 18, 33, 48, 64, 49, 34, 19, 4, 5, 20, 35, 50, 65, 80, 96,
  81, 66, 51, 36, 21, 6, 7, 22, 37, 52, 67, 82, 97, 112, 128, 113, 98, 83, 68, 53,
  38, 23, 8, 9, 24, 39, 54, 69, 84, 99, 114, 129, 144, 160, 145, 130, 115, 100, 85,
  70, 55, 40, 25, 10, 11, 26, 41, 56, 71, 86, 101, 116, 131, 146, 161, 176, 192,
  177, 162, 147, 132, 117, 102, 87, 72, 57, 42, 27, 12, 13, 28, 43, 58, 73, 88, 103,
  118, 133, 148, 163, 178, 193, 208, 224, 209, 194, 179, 164, 149, 134, 119, 104,
  89, 74, 59, 44, 29, 14, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195,
  210, 225, 240, 241, 226, 211, 196, 181, 166, 151, 136, 121, 106, 91, 76, 61, 46,
  31, 47, 62, 77, 92, 107, 122, 137, 152, 167, 182, 197, 212, 227, 242, 243, 228,
  213, 198, 183, 168, 153, 138, 123, 108, 93, 78, 63, 79, 94, 109, 124, 139, 154,
  169, 184, 199, 214, 229, 244, 245, 230, 215, 200, 185, 170, 155, 140, 125, 110,
  95, 111, 126, 141, 156, 171, 186, 201, 216, 231, 246, 247, 232, 217, 202, 187,
  172, 157, 142, 127, 143, 158, 173, 188, 203, 218, 233, 248, 249, 234, 219, 204,
  189, 174, 159, 175, 190, 205, 220, 235, 250, 251, 236, 221, 206, 191, 207, 222,
  237, 252, 253, 238, 223, 239, 254, 255,
]