Difference between revisions of "VC-1 Tables"

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''(Part of [[Understanding VC-1]])''
''(Part of [[Understanding VC-1]])''
== Block Transform Types ==
* 0: 8x8 transform
* 1: 8x4 transform
* 2: 4x8 transform
* 3: 4x4 transform
== Scaling Modes ==
* 0: 1x1 = no scaling
* 1: 2x1 = horizontal scaling
* 2: 1x2 = vertical scaling
* 3: 2x2 = horizontal and vertical scaling
== Motion Vector Ranges ==
* Range #0:
** x component range = -64..63
** y component range = -32..31
* Range #1:
** x component range = -128..127
** y component range = -64..63
* Range #2:
** x component range = -512..511
** y component range = -128..127
* Range #3:
** x component range = -1024..1023
** y component range = -256..255


== Motion Vector Range VLC Table ==
== Motion Vector Range VLC Table ==

Revision as of 21:17, 25 April 2006

(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 8x8

 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}