preliminary vc9 bitstream decoder, committing to make syncing and team-work on it easier

Originally committed as revision 3861 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 373 insertions, 0 deletions

diff --git a/libavcodec/vc9data.h b/libavcodec/vc9data.h
new file mode 100644
index 0000000000..c3826f1a63
--- /dev/null
+++ b/libavcodec/vc9data.h
@@ -0,0 +1,373 @@
+/**
+ * @file vc9data.h
+ * VC9 tables.
+ */
+
+#ifndef VC9DATA_H
+#define VC9DATA_H
+
+/* bfraction is fractional, we scale to the GCD 3*5*7*8 = 840 */
+const int16_t vc9_bfraction_lut[23] = {
+  420 /*1/2*/, 280 /*1/3*/, 560 /*2/3*/, 210 /*1/4*/,
+  630 /*3/4*/, 168 /*1/5*/, 336 /*2/5*/,
+  504 /*3/5*/, 672 /*4/5*/, 140 /*1/6*/, 700 /*5/6*/,
+  120 /*1/7*/, 240 /*2/7*/, 360 /*3/7*/, 480 /*4/7*/,
+  600 /*5/7*/, 720 /*6/7*/, 105 /*1/8*/, 315 /*3/8*/,
+  525 /*5/8*/, 735 /*7/8*/,
+  -1 /*inv.*/, 0 /*BI fm*/
+};
+const uint8_t vc9_bfraction_bits[23] = {
+    3, 3, 3, 3,
+    3, 3, 3,
+    7, 7, 7, 7,
+    7, 7, 7, 7,
+    7, 7, 7, 7,
+    7, 7,
+    7, 7
+};
+const uint8_t vc9_bfraction_codes[23] = {
+     0,   1,   2,   3,
+     4,   5,   6,
+   112, 113, 114, 115,
+   116, 117, 118, 119,
+   120, 121, 122, 123,
+   124, 125,
+   126, 127
+};
+
+//Same as H.264
+static const AVRational vc9_pixel_aspect[16]={
+ {0, 1},
+ {1, 1},
+ {12, 11},
+ {10, 11},
+ {16, 11},
+ {40, 33},
+ {24, 11},
+ {20, 11},
+ {32, 11},
+ {80, 33},
+ {18, 11},
+ {15, 11},
+ {64, 33},
+ {160, 99},
+ {0, 1},
+ {0, 1}
+};
+
+/* BitPlane IMODE - such a small table... */
+static const uint8_t vc9_imode_codes[7] = {
+  0, 2, 1, 3, 1, 2, 3
+};
+static const uint8_t vc9_imode_bits[7] = {
+  4, 2, 3, 2, 4, 3, 3
+};
+
+/* Normal-2 imode */
+static const uint8_t vc9_norm2_codes[4] = {
+  0, 4, 5, 3
+};
+static const uint8_t vc9_norm2_bits[4] = {
+  1, 3, 3, 2
+};
+
+/* 4MV Block pattern VLC tables */
+static const uint8_t vc9_4mv_block_pattern_codes[4][16] = {
+  { 14, 58, 59, 25, 12, 26, 15, 15, 13, 24, 27,  0, 28,  1,  2,  2},
+  {  8, 18, 19,  4, 20,  5, 30, 11, 21, 31,  6, 12,  7, 13, 14,  0},
+  { 15,  6,  7,  2,  8,  3, 28,  9, 10, 29,  4, 11,  5, 12, 13,  0},
+  {  0, 11, 12,  4, 13,  5, 30, 16, 14, 31,  6, 17,  7, 18, 19, 19}
+};
+static const uint8_t vc9_4mv_block_pattern_bits[4][16] = {
+  { 5, 6, 6, 5, 5, 5, 5, 4, 5, 5, 5, 3, 5, 3, 3, 2},
+  { 4, 5, 5, 4, 5, 4, 5, 4, 5, 5, 4, 4, 4, 4, 4, 2},
+  { 4, 4, 4, 4, 4, 4, 5, 4, 4, 5, 4, 4, 4, 4, 4, 3},
+  { 2, 4, 4, 4, 4, 4, 5, 5, 4, 5, 4, 5, 4, 5, 5, 4}
+};
+
+/* I-Picture CBPCY VLC tables */
+static const uint16_t vc9_cbpcy_i_codes[64] = {
+     1,   23,    9,    5,    6,   71,   32,   16,
+     2,  124,   58,   29,    2,  236,  119,    0,
+     3,  183,   44,   19,    1,  360,   70,   63,
+    30, 1810,  181,   66,   34,  453,  286,  135,
+     6,    3,   30,   28,   18,  904,   68,  112,
+    31,  574,   57,  142,    1,  454,  182,   69,
+    20,  575,  125,   24,    7,  455,  134,   25,
+    21,  475,    2,   70,   13, 1811,  474,  361
+};
+static const uint8_t vc9_cbpcy_i_bits[64] = {
+   1,  6,  5,  5,  5,  9,  7,  7,  5,  9,  7,  7,  6,  9,  8,  8,
+   5,  9,  7,  7,  6, 10,  8,  8,  6, 13,  9,  8,  7, 11, 10,  9,
+   4,  9,  7,  6,  7, 12,  9,  9,  6, 11,  8,  9,  7, 11,  9,  9,
+   6, 11,  9,  9,  7, 11,  9,  9,  6, 10,  9,  9,  8, 13, 10, 10
+};
+
+/* P-Picture CBPCY VLC tables */
+static const uint16_t vc9_cbpcy_p_codes[4][64] = {
+  {
+      0,   1,   1,   4,   5,   1,  12,   4,  13,  14,  10,  11,  12,   7,  13,   2,
+     15,   1,  96,   1,  49,  97,   2, 100,   3,   4,   5, 101, 102,  52,  53,   4,
+      6,   7,  54, 103,   8,   9,  10, 110,  11,  12, 111,  56, 114,  58, 115,   5,
+     13,   7,   8,   9,  10,  11,  12,  30,  13,  14,  15, 118, 119,  62,  63,   3
+  },
+  {
+      0,   1,   2,   1,   3,   1,  16,  17,   5,  18,  12,  19,  13,   1,  28,  58,
+      1,   1,   1,   2,   3,   2,   3, 236, 237,   4,   5, 238,   6,   7, 239,   8,
+      9, 240,  10,  11, 121, 122,  12,  13,  14,  15, 241, 246,  16,  17, 124,  63,
+     18,  19,  20,  21,  22,  23,  24,  25,  26,  27,  28,  29,  30,  31, 247, 125
+  },
+  {
+      0,   1,   2,   3,   2,   3,   1,   4,   5,  24,   7,  13,  16,  17,   9,   5,
+     25,   1,   1,   1,   2,   3,  96, 194,   1,   2,  98,  99, 195, 200, 101,  26,
+    201, 102, 412, 413, 414,  54, 220, 111, 221,   3, 224, 113, 225, 114, 230,  29,
+    231, 415, 240,   4, 241, 484,   5, 243,   3, 244, 245, 485, 492, 493, 247,  31
+  },
+  {
+      0,   1,   1,   1,   2,   2,   3,   4,   3,   5,   6,   7,   8,   9,  10,  11,
+     12,  13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23,  24,  25,  26,  27,
+     28,  29,  30,  31,  32,  33,  34,  35,  36,  37,  38,  39,  40,  41,  42,  43,
+     44,  45,  46,  47,  48,  49,  50,  51,  52,  53,  54,  55,  28,  29,  30,  31
+   }
+};
+static const uint8_t vc9_cbpcy_p_bits[4][64] = {
+  {
+    13,  6,  5,  6,  6,  7,  7,  5,  7,  7,  6,  6,  6,  5,  6,  3,
+     7,  8,  8, 13,  7,  8, 13,  8, 13, 13, 13,  8,  8,  7,  7,  3,
+    13, 13,  7,  8, 13, 13, 13,  8, 13, 13,  8,  7,  8,  7,  8,  3,
+    13, 12, 12, 12, 12, 12, 12,  6, 12, 12, 12,  8,  8,  7,  7,  2
+  },
+  {
+    14,  3,  3,  5,  3,  4,  5,  5,  3,  5,  4,  5,  4,  6,  5,  6,
+     8, 14, 13,  8,  8, 13, 13,  8,  8, 13, 13,  8, 13, 13,  8, 13,
+    13,  8, 13, 13,  7,  7, 13, 13, 13, 13,  8,  8, 13, 13,  7,  6,
+    13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,  8,  7
+  },
+  {
+    13,  5,  5,  5,  4,  4,  6,  4,  4,  6,  4,  5,  5,  5,  4,  3,
+     6,  8, 10,  9,  8,  8,  7,  8, 13, 13,  7,  7,  8,  8,  7,  5,
+     8,  7,  9,  9,  9,  6,  8,  7,  8, 13,  8,  7,  8,  7,  8,  5,
+     8,  9,  8, 13,  8,  9, 13,  8, 12,  8,  8,  9,  9,  9,  8,  5
+  },
+  {
+     9,  2,  3,  9,  2,  9,  9,  9,  2,  9,  9,  9,  9,  9,  9,  9,
+     9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,
+     9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,
+     9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  8,  8,  8,  8
+  }
+};
+
+/* MacroBlock Transform Type
+ * 8x8:B
+ * 8x4:B:btm  8x4:B:top  8x4:B:both,
+ * 4x8:B:right  4x8:B:left  4x8:B:both
+ * 4x4:B  8x8:MB
+ * 8x4:MB:btm  8x4:MB:top  8x4,MB,both
+ * 4x8,MB,right  4x8,MB,left
+ * 4x4,MB                               */
+static const uint16_t vc9_ttmb_codes[3][16] = {
+  {
+    0x0003,
+    0x002E, 0x005F, 0x0000,
+    0x0016, 0x0015, 0x0001,
+    0x0004, 0x0014,
+    0x02F1, 0x0179, 0x017B,
+    0x0BC0, 0x0BC1, 0x05E1,
+    0x017A
+  },
+  {
+    0x0006,
+    0x0006, 0x0003, 0x0007,
+    0x000F, 0x000E, 0x0000,
+    0x0002, 0x0002,
+    0x0014, 0x0011, 0x000B,
+    0x0009, 0x0021, 0x0015,
+    0x0020
+  },
+  {
+    0x0006,
+    0x0000, 0x000E, 0x0005,
+    0x0002, 0x0003, 0x0003,
+    0x000F, 0x0002,
+    0x0081, 0x0011, 0x0009,
+    0x0101, 0x0041, 0x0011,
+    0x0100
+  }
+};
+
+static const uint8_t vc9_ttmb_bits[3][16] = {
+  {
+     2,
+     6,  7,  2,
+     5,  5,  2,
+     3,  5,
+    10,  9,  9,
+    12, 12, 11,
+     9
+  },
+  {
+    3,
+    4, 4, 4,
+    4, 4, 3,
+    3, 2,
+    7, 7, 6,
+    6, 8, 7,
+    8
+  },
+  {
+     3,
+     3, 4, 5,
+     3, 3, 4,
+     4, 2,
+     9, 7, 6,
+    10, 9, 7,
+    11
+  }
+};  
+
+
+/* MV differential tables, p265 */
+static const uint16_t vc9_mv_diff_codes[4][73] = {
+  {
+       0,    2,    3,    8,  576,    3,    2,    6,
+       5,  577,  578,    7,    8,    9,   40,   19,
+      37,   82,   21,   22,   23,  579,  580,  166,
+      96,  167,   49,  194,  195,  581,  582,  583,
+     292,  293,  294,   13,    2,    7,   24,   50,
+     102,  295,   13,    7,    8,   18,   50,  103,
+      38,   20,   21,   22,   39,  204,  103,   23,
+      24,   25,  104,  410,  105,  106,  107,  108,
+     109,  220,  411,  442,  222,  443,  446,  447,
+       7 /* 73 elements */
+  },
+  {
+       0,    4,    5,    3,    4,    3,    4,    5,
+      20,    6,   21,   44,   45,   46, 3008,   95,
+     112,  113,   57, 3009, 3010,  116,  117, 3011,
+     118, 3012, 3013, 3014, 3015, 3016, 3017, 3018,
+    3019, 3020, 3021, 3022,    1,    4,   15,  160,
+     161,   41,    6,   11,   42,  162,   43,  119,
+      56,   57,   58,  163,  236,  237, 3023,  119,
+     120,  242,  122,  486, 1512,  487,  246,  494,
+    1513,  495, 1514, 1515, 1516, 1517, 1518, 1519,
+      31 /* 73 elements */
+  },
+  {
+       0,  512,  513,  514,  515,    2,    3,  258,
+     259,  260,  261,  262,  263,  264,  265,  266,
+     267,  268,  269,  270,  271,  272,  273,  274,
+     275,  276,  277,  278,  279,  280,  281,  282,
+     283,  284,  285,  286,    1,    5,  287,  288,
+     289,  290,    6,    7,  291,  292,  293,  294,
+     295,  296,  297,  298,  299,  300,  301,  302,
+     303,  304,  305,  306,  307,  308,  309,  310,
+     311,  312,  313,  314,  315,  316,  317,  318,
+     319 /* 73 elements */
+  },
+  {
+       0,    1,    1,    2,    3,    4,    1,    5,
+       4,    3,    5,    8,    6,    9,   10,   11,
+      12,    7,  104,   14,  105,    4,   10,   15,
+      11,    6,   14,    8,  106,  107,  108,   15,
+     109,    9,   55,   10,    1,    2,    1,    2,
+       3,   12,    6,    2,    6,    7,   28,    7,
+      15,    8,    5,   18,   29,  152,   77,   24,
+      25,   26,   39,  108,   13,  109,   55,   56,
+      57,  116,   11,  153,  234,  235,  118,  119,
+      15 /* 73 elements */
+  }
+};
+static const uint8_t vc9_mv_diff_bits[4][73] = {
+  {
+     6,  7,  7,  8, 14,  6,  5,  6,  7, 14, 14,  6,  6,  6,  8,  9,
+    10,  9,  7,  7,  7, 14, 14, 10,  9, 10,  8, 10, 10, 14, 14, 14,
+    13, 13, 13,  6,  3,  5,  6,  8,  9, 13,  5,  4,  4,  5,  7,  9,
+     6,  5,  5,  5,  6,  9,  8,  5,  5,  5,  7, 10,  7,  7,  7,  7,
+     7,  8, 10,  9,  8,  9,  9,  9,  3 /* 73 elements */
+  },
+  {
+     5,  7,  7,  6,  6,  5,  5,  6,  7,  5,  7,  8,  8,  8, 14,  9,
+     9,  9,  8, 14, 14,  9,  9, 14,  9, 14, 14, 14, 14, 14, 14, 14,
+    14, 14, 14, 14,  2,  3,  6,  8,  8,  6,  3,  4,  6,  8,  6,  9,
+     6,  6,  6,  8,  8,  8, 14,  7,  7,  8,  7,  9, 13,  9,  8,  9,
+    13,  9, 13, 13, 13, 13, 13, 13,  5 /* 73 elements */
+     
+  },
+  {
+     3, 12, 12, 12, 12,  3,  4, 11, 11, 11, 11, 11, 11, 11, 11, 11,
+    11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
+    11, 11, 11, 11,  1,  5, 11, 11, 11, 11,  4,  4, 11, 11, 11, 11,
+    11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
+    11, 11, 11, 11, 11, 11, 11, 11, 11 /* 73 elements */
+  },
+  {
+    15, 11, 15, 15, 15, 15, 12, 15, 12, 11, 12, 12, 15, 12, 12, 12,
+    12, 15, 15, 12, 15, 10, 11, 12, 11, 10, 11, 10, 15, 15, 15, 11,
+    15, 10, 14, 10,  4,  4,  5,  7,  8,  9,  5,  3,  4,  5,  6,  8,
+     5,  4,  3,  5,  6,  8,  7,  5,  5,  5,  6,  7,  9,  7,  6,  6,
+     6,  7, 10,  8,  8,  8,  7,  7,  4 /* 73 elements */
+  }
+};
+
+/* DC luma differentials low+hi-mo, p217 */
+static const uint32_t vc9_luma_dc_codes[2][120] = {
+  {
+          1,       1,       1,       1,       5,       7,       8,      12,
+          0,       2,      18,      26,       3,       7,      39,      55,
+          5,      76,     108,     109,       8,      25,     155,      27,
+        154,      19,      52,      53,      97,      72,     196,      74,
+        198,     199,     146,     395,     147,     387,     386,     150,
+        151,     384,     788,     789,    1541,    1540,    1542,    3086,
+     197581,  197577,  197576,  197578,  197579,  197580,  197582,  197583,
+     197584,  197585,  197586,  197587,  197588,  197589,  197590,  197591,
+     197592,  197593,  197594,  197595,  197596,  197597,  197598,  197599,
+     197600,  197601,  197602,  197603,  197604,  197605,  197606,  197607,
+     197608,  197609,  197610,  197611,  197612,  197613,  197614,  197615,
+     197616,  197617,  197618,  197619,  197620,  197621,  197622,  197623,
+     197624,  197625,  197626,  197627,  197628,  197629,  197630,  197631,
+     395136,  395137,  395138,  395139,  395140,  395141,  395142,  395143,
+     395144,  395145,  395146,  395147,  395148,  395149,  395150,  395151
+  },
+  {
+          2,       3,       3,       2,       5,       1,       3,       8,
+          0,       5,      13,      15,      19,       8,      24,      28,
+         36,       4,       6,      18,      50,      59,      74,      75, 
+         11,      38,      39,     102,     116,     117,      20,      28,
+         31,      29,      43,      61,     413,     415,      84,     825,
+        824,     829,     171,     241,    1656,     242,     480,     481,
+        340,    3314,     972,     683,    6631,     974,    6630,    1364,
+       1951,    1365,    3901,    3895,    3900,    3893,    7789,    7784,
+      15576,   15571,   15577,   31140,  996538,  996532,  996533,  996534,
+     996535,  996536,  996537,  996539,  996540,  996541,  996542,  996543,
+    1993024, 1993025, 1993026, 1993027, 1993029, 1993029, 1993030, 1993031,
+    1993032, 1993033, 1993034, 1993035, 1993036, 1993037, 1993038, 1993039,
+    1993040, 1993041, 1993042, 1993043, 1993044, 1993045, 1993046, 1993047,
+    1993048, 1993049, 1993050, 1993051, 1993052, 1993053, 1993054, 1993055,
+    1993056, 1993057, 1993058, 1993059, 1993060, 1993061, 1993062, 1993063
+  }
+};
+static const uint8_t vc9_luma_dc_bits[2][120] = {
+  {
+      1,  2,  4,  5,  5,  5,  6,  6,  7,  7,  7,  7,  8,  8,  8,  8,
+      9,  9,  9,  9, 10, 10, 10, 10, 10, 11, 11, 11, 12, 13, 13, 13,
+     13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 16, 16, 16, 17,
+     23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23,
+     23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23,
+     23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23,
+     23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24,
+     24, 24, 24, 24, 24, 24, 24, 24 /* lowmo, 120 values */
+  },
+  {
+      2,  2,  3,  4,  4,  5,  5,  5,  6,  6,  6,  6,  6,  7,  7,  7,
+      7,  8,  8,  8,  8,  8,  8,  8,  9,  9,  9,  9,  9,  9, 10, 10,
+     10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 14, 14,
+     14, 14, 15, 15, 15, 15, 15, 16, 16, 16, 17, 17, 17, 17, 18, 18,
+     19, 19, 19, 20, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
+     26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
+     26, 26, 26, 26, 26, 26, 26, 26 /* himo, 120 values */
+  }
+};
+
+/* DC chroma differentials low+hi-mo */
+
+#endif /* VC9DATA_H */