VC-1 Tables
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(Part of Understanding VC-1)
Motion Vector Range VLC Table
code length VLC range # 1 0 0 2 2 1 3 6 2 3 7 3
B Fraction VLC Table
P-Frame Low Rate Motion Vector Mode Table
P-Frame High Rate Motion Vector Mode Table
Motion Vector Diff VLC Tables
Table 0
Table 1
Table 2
Table 3
Coded Block Pattern VLC Tables
Table 0
Table 1
Table 2
Table 3
Bitplane I-mode VLC Table
Norm-2 VLC Table
Norm-6 VLC Table
Transform Tables
These tables pertain to vc1ITRANS_InverseTransform_AnnexA1.
Transform Matrix 8x8
int transform_matrix_8x8[8][8] = { { 12, 12, 12, 12, 12, 12, 12, 12 }, { 16, 15, 9, 4, -4, -9, -15, -16 }, { 16, 6, -6, -16, -16, -6, 6, 16 }, { 15, -4, -16, -9, 9, 16, 4, -15 }, { 12, -12, -12, 12, 12, -12, -12, 12 }, { 9, -16, 4, 15, -15, -4, 16, -9 }, { 6, -16, 16, -6, -6, 16, -16, 6 }, { 4, -9, 15, -16, 16, -15, 9, -4 } };
Transform Matrix 4x4
int transform_matrix_4x4[4][4] = { { 17, 17, 17, 17 }, { 22, 10, -10, -22 }, { 17, -17, -17, 17 }, { 10, -22, 22, -10 } };
Constants 8
int constants_8 = { 0, 0, 0, 0, 1, 1, 1, 1 };
Constants 4
int constants_4 = { 0, 0, 0, 0 };
Bicubic Filter Coefficients
- 1/4 pel coordinate: {-4, 53, 18, -3}, divisor = 64 = 26
- 1/2 pel coordinate: {-1, 9, 9, -1}, divisor = 16 = 24
- 3/4 pel coordinate: {-3, 18, 53, -4}, divisor = 64 = 26
Bilinear Filter Coefficients
- array a: {4, 3, 2, 1}
- array b: {0, 1, 2, 3}
DC Differential VLC Tables
Low Motion Luminance (Y) Table
High Motion Luminance (Y) Table
Low Motion Chrominance (C) Table
High Motion Chrominance (C) Table
Transform Type VLC Tables
1 <= PQuant <= 4
5 <= PQuant <= 12
13 <= PQuant <= 31
Macroblock Transform Type VLC Tables
1 <= PQuant <= 4
5 <= PQuant <= 12
13 <= PQuant <= 31
Inter-coded Sub-block Coding Pattern VLC Tables
1 <= PQuant <= 4
5 <= PQuant <= 12
13 <= PQuant <= 31
Coded Block Pattern VLC Tables
Table 0
Table 1
Table 2
Table 3
I-Frame Coded Block Pattern VLC Table
SRD: vc1DEC_I_Picture_CBPCY_VLC
Implicit Non-Uniform Quantizers
SRD: vc1IQUANT_NonUniformImplicit
unsigned char non_uniform_implicit_quantizers[32] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 29, 31 };