rv34: export qp table
[ffmpeg.git] / libavcodec / mathtables.c
1 /*
2  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 #include <stdint.h>
22
23 /* a*inverse[b]>>32 == a/b for all 0<=a<=16909558 && 2<=b<=256
24  * for a>16909558, is an overestimate by less than 1 part in 1<<24 */
25 const uint32_t ff_inverse[257]={
26          0, 4294967295U,2147483648U,1431655766, 1073741824,  858993460,  715827883,  613566757,
27  536870912,  477218589,  429496730,  390451573,  357913942,  330382100,  306783379,  286331154,
28  268435456,  252645136,  238609295,  226050911,  214748365,  204522253,  195225787,  186737709,
29  178956971,  171798692,  165191050,  159072863,  153391690,  148102321,  143165577,  138547333,
30  134217728,  130150525,  126322568,  122713352,  119304648,  116080198,  113025456,  110127367,
31  107374183,  104755300,  102261127,   99882961,   97612894,   95443718,   93368855,   91382283,
32   89478486,   87652394,   85899346,   84215046,   82595525,   81037119,   79536432,   78090315,
33   76695845,   75350304,   74051161,   72796056,   71582789,   70409300,   69273667,   68174085,
34   67108864,   66076420,   65075263,   64103990,   63161284,   62245903,   61356676,   60492498,
35   59652324,   58835169,   58040099,   57266231,   56512728,   55778797,   55063684,   54366675,
36   53687092,   53024288,   52377650,   51746594,   51130564,   50529028,   49941481,   49367441,
37   48806447,   48258060,   47721859,   47197443,   46684428,   46182445,   45691142,   45210183,
38   44739243,   44278014,   43826197,   43383509,   42949673,   42524429,   42107523,   41698712,
39   41297763,   40904451,   40518560,   40139882,   39768216,   39403370,   39045158,   38693400,
40   38347923,   38008561,   37675152,   37347542,   37025581,   36709123,   36398028,   36092163,
41   35791395,   35495598,   35204650,   34918434,   34636834,   34359739,   34087043,   33818641,
42   33554432,   33294321,   33038210,   32786010,   32537632,   32292988,   32051995,   31814573,
43   31580642,   31350127,   31122952,   30899046,   30678338,   30460761,   30246249,   30034737,
44   29826162,   29620465,   29417585,   29217465,   29020050,   28825284,   28633116,   28443493,
45   28256364,   28071682,   27889399,   27709467,   27531842,   27356480,   27183338,   27012373,
46   26843546,   26676816,   26512144,   26349493,   26188825,   26030105,   25873297,   25718368,
47   25565282,   25414008,   25264514,   25116768,   24970741,   24826401,   24683721,   24542671,
48   24403224,   24265352,   24129030,   23994231,   23860930,   23729102,   23598722,   23469767,
49   23342214,   23216040,   23091223,   22967740,   22845571,   22724695,   22605092,   22486740,
50   22369622,   22253717,   22139007,   22025474,   21913099,   21801865,   21691755,   21582751,
51   21474837,   21367997,   21262215,   21157475,   21053762,   20951060,   20849356,   20748635,
52   20648882,   20550083,   20452226,   20355296,   20259280,   20164166,   20069941,   19976593,
53   19884108,   19792477,   19701685,   19611723,   19522579,   19434242,   19346700,   19259944,
54   19173962,   19088744,   19004281,   18920561,   18837576,   18755316,   18673771,   18592933,
55   18512791,   18433337,   18354562,   18276457,   18199014,   18122225,   18046082,   17970575,
56   17895698,   17821442,   17747799,   17674763,   17602325,   17530479,   17459217,   17388532,
57   17318417,   17248865,   17179870,   17111424,   17043522,   16976156,   16909321,   16843010,
58   16777216
59 };
60
61 const uint8_t ff_sqrt_tab[256]={
62   0, 16, 23, 28, 32, 36, 40, 43, 46, 48, 51, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 77, 79, 80, 82, 84, 85, 87, 88, 90,
63  91, 92, 94, 95, 96, 98, 99,100,102,103,104,105,107,108,109,110,111,112,114,115,116,117,118,119,120,121,122,123,124,125,126,127,
64 128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,144,145,146,147,148,149,150,151,151,152,153,154,155,156,156,
65 157,158,159,160,160,161,162,163,164,164,165,166,167,168,168,169,170,171,171,172,173,174,174,175,176,176,177,178,179,179,180,181,
66 182,182,183,184,184,185,186,186,187,188,188,189,190,190,191,192,192,193,194,194,195,196,196,197,198,198,199,200,200,201,202,202,
67 203,204,204,205,205,206,207,207,208,208,209,210,210,211,212,212,213,213,214,215,215,216,216,217,218,218,219,219,220,220,221,222,
68 222,223,223,224,224,225,226,226,227,227,228,228,229,230,230,231,231,232,232,233,233,234,235,235,236,236,237,237,238,238,239,239,
69 240,240,241,242,242,243,243,244,244,245,245,246,246,247,247,248,248,249,249,250,250,251,251,252,252,253,253,254,254,255,255,255
70 };
71
72 const uint8_t ff_reverse[256] = {
73 0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
74 0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
75 0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
76 0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
77 0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
78 0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
79 0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
80 0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
81 0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
82 0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
83 0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
84 0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
85 0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
86 0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
87 0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
88 0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
89 };
90
91 #define times4(x) x, x, x, x
92
93 const uint8_t ff_cropTbl[256 + 2 * 1024] = {
94 times4(times4(times4(times4(times4(0x00))))),
95 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,0x0E,0x0F,
96 0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F,
97 0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,
98 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F,
99 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F,
100 0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5A,0x5B,0x5C,0x5D,0x5E,0x5F,
101 0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,
102 0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A,0x7B,0x7C,0x7D,0x7E,0x7F,
103 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,
104 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,
105 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,
106 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF,
107 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,
108 0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF,
109 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,
110 0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF,
111 times4(times4(times4(times4(times4(0xFF)))))};
112
113 const uint8_t ff_zigzag_direct[64] = {
114   0,   1,  8, 16,  9,  2,  3, 10,
115   17, 24, 32, 25, 18, 11,  4,  5,
116   12, 19, 26, 33, 40, 48, 41, 34,
117   27, 20, 13,  6,  7, 14, 21, 28,
118   35, 42, 49, 56, 57, 50, 43, 36,
119   29, 22, 15, 23, 30, 37, 44, 51,
120   58, 59, 52, 45, 38, 31, 39, 46,
121   53, 60, 61, 54, 47, 55, 62, 63
122 };