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authorDiego Biurrun <diego@biurrun.de>2012-10-11 01:16:05 +0200
committerDiego Biurrun <diego@biurrun.de>2012-10-11 18:29:36 +0200
commit9734b8ba56d05e970c353dfd5baafa43fdb08024 (patch)
treee1f40e82ce4aa2ab7dc081115278057e08ffbbb6 /libavcodec/mathtables.c
parent0a75d1da23b8659ec49391469bb592da12760077 (diff)
Move avutil tables only used in libavcodec to libavcodec.
Diffstat (limited to 'libavcodec/mathtables.c')
-rw-r--r--libavcodec/mathtables.c68
1 files changed, 68 insertions, 0 deletions
diff --git a/libavcodec/mathtables.c b/libavcodec/mathtables.c
new file mode 100644
index 0000000000..45d06ebcdb
--- /dev/null
+++ b/libavcodec/mathtables.c
@@ -0,0 +1,68 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdint.h>
+
+/* a*inverse[b]>>32 == a/b for all 0<=a<=16909558 && 2<=b<=256
+ * for a>16909558, is an overestimate by less than 1 part in 1<<24 */
+const uint32_t ff_inverse[257]={
+ 0, 4294967295U,2147483648U,1431655766, 1073741824, 858993460, 715827883, 613566757,
+ 536870912, 477218589, 429496730, 390451573, 357913942, 330382100, 306783379, 286331154,
+ 268435456, 252645136, 238609295, 226050911, 214748365, 204522253, 195225787, 186737709,
+ 178956971, 171798692, 165191050, 159072863, 153391690, 148102321, 143165577, 138547333,
+ 134217728, 130150525, 126322568, 122713352, 119304648, 116080198, 113025456, 110127367,
+ 107374183, 104755300, 102261127, 99882961, 97612894, 95443718, 93368855, 91382283,
+ 89478486, 87652394, 85899346, 84215046, 82595525, 81037119, 79536432, 78090315,
+ 76695845, 75350304, 74051161, 72796056, 71582789, 70409300, 69273667, 68174085,
+ 67108864, 66076420, 65075263, 64103990, 63161284, 62245903, 61356676, 60492498,
+ 59652324, 58835169, 58040099, 57266231, 56512728, 55778797, 55063684, 54366675,
+ 53687092, 53024288, 52377650, 51746594, 51130564, 50529028, 49941481, 49367441,
+ 48806447, 48258060, 47721859, 47197443, 46684428, 46182445, 45691142, 45210183,
+ 44739243, 44278014, 43826197, 43383509, 42949673, 42524429, 42107523, 41698712,
+ 41297763, 40904451, 40518560, 40139882, 39768216, 39403370, 39045158, 38693400,
+ 38347923, 38008561, 37675152, 37347542, 37025581, 36709123, 36398028, 36092163,
+ 35791395, 35495598, 35204650, 34918434, 34636834, 34359739, 34087043, 33818641,
+ 33554432, 33294321, 33038210, 32786010, 32537632, 32292988, 32051995, 31814573,
+ 31580642, 31350127, 31122952, 30899046, 30678338, 30460761, 30246249, 30034737,
+ 29826162, 29620465, 29417585, 29217465, 29020050, 28825284, 28633116, 28443493,
+ 28256364, 28071682, 27889399, 27709467, 27531842, 27356480, 27183338, 27012373,
+ 26843546, 26676816, 26512144, 26349493, 26188825, 26030105, 25873297, 25718368,
+ 25565282, 25414008, 25264514, 25116768, 24970741, 24826401, 24683721, 24542671,
+ 24403224, 24265352, 24129030, 23994231, 23860930, 23729102, 23598722, 23469767,
+ 23342214, 23216040, 23091223, 22967740, 22845571, 22724695, 22605092, 22486740,
+ 22369622, 22253717, 22139007, 22025474, 21913099, 21801865, 21691755, 21582751,
+ 21474837, 21367997, 21262215, 21157475, 21053762, 20951060, 20849356, 20748635,
+ 20648882, 20550083, 20452226, 20355296, 20259280, 20164166, 20069941, 19976593,
+ 19884108, 19792477, 19701685, 19611723, 19522579, 19434242, 19346700, 19259944,
+ 19173962, 19088744, 19004281, 18920561, 18837576, 18755316, 18673771, 18592933,
+ 18512791, 18433337, 18354562, 18276457, 18199014, 18122225, 18046082, 17970575,
+ 17895698, 17821442, 17747799, 17674763, 17602325, 17530479, 17459217, 17388532,
+ 17318417, 17248865, 17179870, 17111424, 17043522, 16976156, 16909321, 16843010,
+ 16777216
+};
+
+const uint8_t ff_sqrt_tab[256]={
+ 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,
+ 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,
+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,
+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,
+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,
+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,
+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,
+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
+};