| // Copyright 2011 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package vp8 |
| |
| // This file contains token probabilities for decoding DCT/WHT coefficients, as |
| // specified in chapter 13. |
| |
| func (d *Decoder) parseTokenProb() { |
| for i := range d.tokenProb { |
| for j := range d.tokenProb[i] { |
| for k := range d.tokenProb[i][j] { |
| for l := range d.tokenProb[i][j][k] { |
| if d.fp.readBit(tokenProbUpdateProb[i][j][k][l]) { |
| d.tokenProb[i][j][k][l] = uint8(d.fp.readUint(uniformProb, 8)) |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| // The plane enumeration is specified in section 13.3. |
| const ( |
| planeY1WithY2 = iota |
| planeY2 |
| planeUV |
| planeY1SansY2 |
| nPlane |
| ) |
| |
| const ( |
| nBand = 8 |
| nContext = 3 |
| nProb = 11 |
| ) |
| |
| // Token probability update probabilities are specified in section 13.4. |
| var tokenProbUpdateProb = [nPlane][nBand][nContext][nProb]uint8{ |
| { |
| { |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {176, 246, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {223, 241, 252, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {249, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 244, 252, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {234, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 246, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {239, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {251, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {251, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 254, 253, 255, 254, 255, 255, 255, 255, 255, 255}, |
| {250, 255, 254, 255, 254, 255, 255, 255, 255, 255, 255}, |
| {254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| }, |
| { |
| { |
| {217, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {225, 252, 241, 253, 255, 255, 254, 255, 255, 255, 255}, |
| {234, 250, 241, 250, 253, 255, 253, 254, 255, 255, 255}, |
| }, |
| { |
| {255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {223, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {238, 253, 254, 254, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {249, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 253, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {247, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {252, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| }, |
| { |
| { |
| {186, 251, 250, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {234, 251, 244, 254, 255, 255, 255, 255, 255, 255, 255}, |
| {251, 251, 243, 253, 254, 255, 254, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {236, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {251, 253, 253, 254, 254, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {254, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {254, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| }, |
| { |
| { |
| {248, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {250, 254, 252, 254, 255, 255, 255, 255, 255, 255, 255}, |
| {248, 254, 249, 253, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {246, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {252, 254, 251, 254, 254, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 254, 252, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {248, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {253, 255, 254, 254, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {245, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {253, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 251, 253, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {252, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 252, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {249, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 255, 253, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| { |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}, |
| }, |
| }, |
| } |
| |
| // Default token probabilities are specified in section 13.5. |
| var defaultTokenProb = [nPlane][nBand][nContext][nProb]uint8{ |
| { |
| { |
| {128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128}, |
| {128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128}, |
| {128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128}, |
| }, |
| { |
| {253, 136, 254, 255, 228, 219, 128, 128, 128, 128, 128}, |
| {189, 129, 242, 255, 227, 213, 255, 219, 128, 128, 128}, |
| {106, 126, 227, 252, 214, 209, 255, 255, 128, 128, 128}, |
| }, |
| { |
| {1, 98, 248, 255, 236, 226, 255, 255, 128, 128, 128}, |
| {181, 133, 238, 254, 221, 234, 255, 154, 128, 128, 128}, |
| {78, 134, 202, 247, 198, 180, 255, 219, 128, 128, 128}, |
| }, |
| { |
| {1, 185, 249, 255, 243, 255, 128, 128, 128, 128, 128}, |
| {184, 150, 247, 255, 236, 224, 128, 128, 128, 128, 128}, |
| {77, 110, 216, 255, 236, 230, 128, 128, 128, 128, 128}, |
| }, |
| { |
| {1, 101, 251, 255, 241, 255, 128, 128, 128, 128, 128}, |
| {170, 139, 241, 252, 236, 209, 255, 255, 128, 128, 128}, |
| {37, 116, 196, 243, 228, 255, 255, 255, 128, 128, 128}, |
| }, |
| { |
| {1, 204, 254, 255, 245, 255, 128, 128, 128, 128, 128}, |
| {207, 160, 250, 255, 238, 128, 128, 128, 128, 128, 128}, |
| {102, 103, 231, 255, 211, 171, 128, 128, 128, 128, 128}, |
| }, |
| { |
| {1, 152, 252, 255, 240, 255, 128, 128, 128, 128, 128}, |
| {177, 135, 243, 255, 234, 225, 128, 128, 128, 128, 128}, |
| {80, 129, 211, 255, 194, 224, 128, 128, 128, 128, 128}, |
| }, |
| { |
| {1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128}, |
| {246, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128}, |
| {255, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128}, |
| }, |
| }, |
| { |
| { |
| {198, 35, 237, 223, 193, 187, 162, 160, 145, 155, 62}, |
| {131, 45, 198, 221, 172, 176, 220, 157, 252, 221, 1}, |
| {68, 47, 146, 208, 149, 167, 221, 162, 255, 223, 128}, |
| }, |
| { |
| {1, 149, 241, 255, 221, 224, 255, 255, 128, 128, 128}, |
| {184, 141, 234, 253, 222, 220, 255, 199, 128, 128, 128}, |
| {81, 99, 181, 242, 176, 190, 249, 202, 255, 255, 128}, |
| }, |
| { |
| {1, 129, 232, 253, 214, 197, 242, 196, 255, 255, 128}, |
| {99, 121, 210, 250, 201, 198, 255, 202, 128, 128, 128}, |
| {23, 91, 163, 242, 170, 187, 247, 210, 255, 255, 128}, |
| }, |
| { |
| {1, 200, 246, 255, 234, 255, 128, 128, 128, 128, 128}, |
| {109, 178, 241, 255, 231, 245, 255, 255, 128, 128, 128}, |
| {44, 130, 201, 253, 205, 192, 255, 255, 128, 128, 128}, |
| }, |
| { |
| {1, 132, 239, 251, 219, 209, 255, 165, 128, 128, 128}, |
| {94, 136, 225, 251, 218, 190, 255, 255, 128, 128, 128}, |
| {22, 100, 174, 245, 186, 161, 255, 199, 128, 128, 128}, |
| }, |
| { |
| {1, 182, 249, 255, 232, 235, 128, 128, 128, 128, 128}, |
| {124, 143, 241, 255, 227, 234, 128, 128, 128, 128, 128}, |
| {35, 77, 181, 251, 193, 211, 255, 205, 128, 128, 128}, |
| }, |
| { |
| {1, 157, 247, 255, 236, 231, 255, 255, 128, 128, 128}, |
| {121, 141, 235, 255, 225, 227, 255, 255, 128, 128, 128}, |
| {45, 99, 188, 251, 195, 217, 255, 224, 128, 128, 128}, |
| }, |
| { |
| {1, 1, 251, 255, 213, 255, 128, 128, 128, 128, 128}, |
| {203, 1, 248, 255, 255, 128, 128, 128, 128, 128, 128}, |
| {137, 1, 177, 255, 224, 255, 128, 128, 128, 128, 128}, |
| }, |
| }, |
| { |
| { |
| {253, 9, 248, 251, 207, 208, 255, 192, 128, 128, 128}, |
| {175, 13, 224, 243, 193, 185, 249, 198, 255, 255, 128}, |
| {73, 17, 171, 221, 161, 179, 236, 167, 255, 234, 128}, |
| }, |
| { |
| {1, 95, 247, 253, 212, 183, 255, 255, 128, 128, 128}, |
| {239, 90, 244, 250, 211, 209, 255, 255, 128, 128, 128}, |
| {155, 77, 195, 248, 188, 195, 255, 255, 128, 128, 128}, |
| }, |
| { |
| {1, 24, 239, 251, 218, 219, 255, 205, 128, 128, 128}, |
| {201, 51, 219, 255, 196, 186, 128, 128, 128, 128, 128}, |
| {69, 46, 190, 239, 201, 218, 255, 228, 128, 128, 128}, |
| }, |
| { |
| {1, 191, 251, 255, 255, 128, 128, 128, 128, 128, 128}, |
| {223, 165, 249, 255, 213, 255, 128, 128, 128, 128, 128}, |
| {141, 124, 248, 255, 255, 128, 128, 128, 128, 128, 128}, |
| }, |
| { |
| {1, 16, 248, 255, 255, 128, 128, 128, 128, 128, 128}, |
| {190, 36, 230, 255, 236, 255, 128, 128, 128, 128, 128}, |
| {149, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128}, |
| }, |
| { |
| {1, 226, 255, 128, 128, 128, 128, 128, 128, 128, 128}, |
| {247, 192, 255, 128, 128, 128, 128, 128, 128, 128, 128}, |
| {240, 128, 255, 128, 128, 128, 128, 128, 128, 128, 128}, |
| }, |
| { |
| {1, 134, 252, 255, 255, 128, 128, 128, 128, 128, 128}, |
| {213, 62, 250, 255, 255, 128, 128, 128, 128, 128, 128}, |
| {55, 93, 255, 128, 128, 128, 128, 128, 128, 128, 128}, |
| }, |
| { |
| {128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128}, |
| {128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128}, |
| {128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128}, |
| }, |
| }, |
| { |
| { |
| {202, 24, 213, 235, 186, 191, 220, 160, 240, 175, 255}, |
| {126, 38, 182, 232, 169, 184, 228, 174, 255, 187, 128}, |
| {61, 46, 138, 219, 151, 178, 240, 170, 255, 216, 128}, |
| }, |
| { |
| {1, 112, 230, 250, 199, 191, 247, 159, 255, 255, 128}, |
| {166, 109, 228, 252, 211, 215, 255, 174, 128, 128, 128}, |
| {39, 77, 162, 232, 172, 180, 245, 178, 255, 255, 128}, |
| }, |
| { |
| {1, 52, 220, 246, 198, 199, 249, 220, 255, 255, 128}, |
| {124, 74, 191, 243, 183, 193, 250, 221, 255, 255, 128}, |
| {24, 71, 130, 219, 154, 170, 243, 182, 255, 255, 128}, |
| }, |
| { |
| {1, 182, 225, 249, 219, 240, 255, 224, 128, 128, 128}, |
| {149, 150, 226, 252, 216, 205, 255, 171, 128, 128, 128}, |
| {28, 108, 170, 242, 183, 194, 254, 223, 255, 255, 128}, |
| }, |
| { |
| {1, 81, 230, 252, 204, 203, 255, 192, 128, 128, 128}, |
| {123, 102, 209, 247, 188, 196, 255, 233, 128, 128, 128}, |
| {20, 95, 153, 243, 164, 173, 255, 203, 128, 128, 128}, |
| }, |
| { |
| {1, 222, 248, 255, 216, 213, 128, 128, 128, 128, 128}, |
| {168, 175, 246, 252, 235, 205, 255, 255, 128, 128, 128}, |
| {47, 116, 215, 255, 211, 212, 255, 255, 128, 128, 128}, |
| }, |
| { |
| {1, 121, 236, 253, 212, 214, 255, 255, 128, 128, 128}, |
| {141, 84, 213, 252, 201, 202, 255, 219, 128, 128, 128}, |
| {42, 80, 160, 240, 162, 185, 255, 205, 128, 128, 128}, |
| }, |
| { |
| {1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128}, |
| {244, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128}, |
| {238, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128}, |
| }, |
| }, |
| } |
