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Replace generated quant tables with static lookup tables.

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This prevents possible float rounding issues between architectures.

Change-Id: I6ed260aebd49feb4cfb5596a5370c44be5f72167
This commit is contained in:
Ronald S. Bultje
2013-07-16 11:01:18 -07:00
committed by John Koleszar
parent 3f454060bb
commit 33149cbb4c
1 changed files with 74 additions and 0 deletions
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74
vp9/common/vp9_quant_common.c
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@@ -12,6 +12,79 @@
#include "vp9/common/vp9_quant_common.h"
#include "vp9/common/vp9_seg_common.h"
#if 1
static const int16_t dc_qlookup[QINDEX_RANGE] = {
4, 8, 8, 9, 10, 11, 12, 12,
13, 14, 15, 16, 17, 18, 19, 19,
20, 21, 22, 23, 24, 25, 26, 26,
27, 28, 29, 30, 31, 32, 32, 33,
34, 35, 36, 37, 38, 38, 39, 40,
41, 42, 43, 43, 44, 45, 46, 47,
48, 48, 49, 50, 51, 52, 53, 53,
54, 55, 56, 57, 57, 58, 59, 60,
61, 62, 62, 63, 64, 65, 66, 66,
67, 68, 69, 70, 70, 71, 72, 73,
74, 74, 75, 76, 77, 78, 78, 79,
80, 81, 81, 82, 83, 84, 85, 85,
87, 88, 90, 92, 93, 95, 96, 98,
99, 101, 102, 104, 105, 107, 108, 110,
111, 113, 114, 116, 117, 118, 120, 121,
123, 125, 127, 129, 131, 134, 136, 138,
140, 142, 144, 146, 148, 150, 152, 154,
156, 158, 161, 164, 166, 169, 172, 174,
177, 180, 182, 185, 187, 190, 192, 195,
199, 202, 205, 208, 211, 214, 217, 220,
223, 226, 230, 233, 237, 240, 243, 247,
250, 253, 257, 261, 265, 269, 272, 276,
280, 284, 288, 292, 296, 300, 304, 309,
313, 317, 322, 326, 330, 335, 340, 344,
349, 354, 359, 364, 369, 374, 379, 384,
389, 395, 400, 406, 411, 417, 423, 429,
435, 441, 447, 454, 461, 467, 475, 482,
489, 497, 505, 513, 522, 530, 539, 549,
559, 569, 579, 590, 602, 614, 626, 640,
654, 668, 684, 700, 717, 736, 755, 775,
796, 819, 843, 869, 896, 925, 955, 988,
1022, 1058, 1098, 1139, 1184, 1232, 1282, 1336,
};
static const int16_t ac_qlookup[QINDEX_RANGE] = {
4, 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, 56, 57, 58, 59, 60, 61, 62,
63, 64, 65, 66, 67, 68, 69, 70,
71, 72, 73, 74, 75, 76, 77, 78,
79, 80, 81, 82, 83, 84, 85, 86,
87, 88, 89, 90, 91, 92, 93, 94,
95, 96, 97, 98, 99, 100, 101, 102,
104, 106, 108, 110, 112, 114, 116, 118,
120, 122, 124, 126, 128, 130, 132, 134,
136, 138, 140, 142, 144, 146, 148, 150,
152, 155, 158, 161, 164, 167, 170, 173,
176, 179, 182, 185, 188, 191, 194, 197,
200, 203, 207, 211, 215, 219, 223, 227,
231, 235, 239, 243, 247, 251, 255, 260,
265, 270, 275, 280, 285, 290, 295, 300,
305, 311, 317, 323, 329, 335, 341, 347,
353, 359, 366, 373, 380, 387, 394, 401,
408, 416, 424, 432, 440, 448, 456, 465,
474, 483, 492, 501, 510, 520, 530, 540,
550, 560, 571, 582, 593, 604, 615, 627,
639, 651, 663, 676, 689, 702, 715, 729,
743, 757, 771, 786, 801, 816, 832, 848,
864, 881, 898, 915, 933, 951, 969, 988,
1007, 1026, 1046, 1066, 1087, 1108, 1129, 1151,
1173, 1196, 1219, 1243, 1267, 1292, 1317, 1343,
1369, 1396, 1423, 1451, 1479, 1508, 1537, 1567,
1597, 1628, 1660, 1692, 1725, 1759, 1793, 1828,
};
void vp9_init_quant_tables(void) { }
#else
static int16_t dc_qlookup[QINDEX_RANGE];
static int16_t ac_qlookup[QINDEX_RANGE];
@@ -46,6 +119,7 @@ void vp9_init_quant_tables() {
0.5, ac_val));
}
}
#endif
int16_t vp9_dc_quant(int qindex, int delta) {
return dc_qlookup[clamp(qindex + delta, 0, MAXQ)];