1 | // Copyright 2015 Google Inc. All Rights Reserved. |
2 | // |
3 | // Use of this source code is governed by a BSD-style license |
4 | // that can be found in the COPYING file in the root of the source |
5 | // tree. An additional intellectual property rights grant can be found |
6 | // in the file PATENTS. All contributing project authors may |
7 | // be found in the AUTHORS file in the root of the source tree. |
8 | // ----------------------------------------------------------------------------- |
9 | // |
10 | // Image transform methods for lossless encoder. |
11 | // |
12 | // Authors: Vikas Arora (vikaas.arora@gmail.com) |
13 | // Jyrki Alakuijala (jyrki@google.com) |
14 | // Urvang Joshi (urvang@google.com) |
15 | |
16 | #include "src/dsp/dsp.h" |
17 | |
18 | #include <assert.h> |
19 | #include <math.h> |
20 | #include <stdlib.h> |
21 | #include "src/dec/vp8li_dec.h" |
22 | #include "src/utils/endian_inl_utils.h" |
23 | #include "src/dsp/lossless.h" |
24 | #include "src/dsp/lossless_common.h" |
25 | #include "src/dsp/yuv.h" |
26 | |
27 | // lookup table for small values of log2(int) |
28 | const float kLog2Table[LOG_LOOKUP_IDX_MAX] = { |
29 | 0.0000000000000000f, 0.0000000000000000f, |
30 | 1.0000000000000000f, 1.5849625007211560f, |
31 | 2.0000000000000000f, 2.3219280948873621f, |
32 | 2.5849625007211560f, 2.8073549220576041f, |
33 | 3.0000000000000000f, 3.1699250014423121f, |
34 | 3.3219280948873621f, 3.4594316186372973f, |
35 | 3.5849625007211560f, 3.7004397181410921f, |
36 | 3.8073549220576041f, 3.9068905956085187f, |
37 | 4.0000000000000000f, 4.0874628412503390f, |
38 | 4.1699250014423121f, 4.2479275134435852f, |
39 | 4.3219280948873626f, 4.3923174227787606f, |
40 | 4.4594316186372973f, 4.5235619560570130f, |
41 | 4.5849625007211560f, 4.6438561897747243f, |
42 | 4.7004397181410917f, 4.7548875021634682f, |
43 | 4.8073549220576037f, 4.8579809951275718f, |
44 | 4.9068905956085187f, 4.9541963103868749f, |
45 | 5.0000000000000000f, 5.0443941193584533f, |
46 | 5.0874628412503390f, 5.1292830169449663f, |
47 | 5.1699250014423121f, 5.2094533656289501f, |
48 | 5.2479275134435852f, 5.2854022188622487f, |
49 | 5.3219280948873626f, 5.3575520046180837f, |
50 | 5.3923174227787606f, 5.4262647547020979f, |
51 | 5.4594316186372973f, 5.4918530963296747f, |
52 | 5.5235619560570130f, 5.5545888516776376f, |
53 | 5.5849625007211560f, 5.6147098441152083f, |
54 | 5.6438561897747243f, 5.6724253419714951f, |
55 | 5.7004397181410917f, 5.7279204545631987f, |
56 | 5.7548875021634682f, 5.7813597135246599f, |
57 | 5.8073549220576037f, 5.8328900141647412f, |
58 | 5.8579809951275718f, 5.8826430493618415f, |
59 | 5.9068905956085187f, 5.9307373375628866f, |
60 | 5.9541963103868749f, 5.9772799234999167f, |
61 | 6.0000000000000000f, 6.0223678130284543f, |
62 | 6.0443941193584533f, 6.0660891904577720f, |
63 | 6.0874628412503390f, 6.1085244567781691f, |
64 | 6.1292830169449663f, 6.1497471195046822f, |
65 | 6.1699250014423121f, 6.1898245588800175f, |
66 | 6.2094533656289501f, 6.2288186904958804f, |
67 | 6.2479275134435852f, 6.2667865406949010f, |
68 | 6.2854022188622487f, 6.3037807481771030f, |
69 | 6.3219280948873626f, 6.3398500028846243f, |
70 | 6.3575520046180837f, 6.3750394313469245f, |
71 | 6.3923174227787606f, 6.4093909361377017f, |
72 | 6.4262647547020979f, 6.4429434958487279f, |
73 | 6.4594316186372973f, 6.4757334309663976f, |
74 | 6.4918530963296747f, 6.5077946401986963f, |
75 | 6.5235619560570130f, 6.5391588111080309f, |
76 | 6.5545888516776376f, 6.5698556083309478f, |
77 | 6.5849625007211560f, 6.5999128421871278f, |
78 | 6.6147098441152083f, 6.6293566200796094f, |
79 | 6.6438561897747243f, 6.6582114827517946f, |
80 | 6.6724253419714951f, 6.6865005271832185f, |
81 | 6.7004397181410917f, 6.7142455176661224f, |
82 | 6.7279204545631987f, 6.7414669864011464f, |
83 | 6.7548875021634682f, 6.7681843247769259f, |
84 | 6.7813597135246599f, 6.7944158663501061f, |
85 | 6.8073549220576037f, 6.8201789624151878f, |
86 | 6.8328900141647412f, 6.8454900509443747f, |
87 | 6.8579809951275718f, 6.8703647195834047f, |
88 | 6.8826430493618415f, 6.8948177633079437f, |
89 | 6.9068905956085187f, 6.9188632372745946f, |
90 | 6.9307373375628866f, 6.9425145053392398f, |
91 | 6.9541963103868749f, 6.9657842846620869f, |
92 | 6.9772799234999167f, 6.9886846867721654f, |
93 | 7.0000000000000000f, 7.0112272554232539f, |
94 | 7.0223678130284543f, 7.0334230015374501f, |
95 | 7.0443941193584533f, 7.0552824355011898f, |
96 | 7.0660891904577720f, 7.0768155970508308f, |
97 | 7.0874628412503390f, 7.0980320829605263f, |
98 | 7.1085244567781691f, 7.1189410727235076f, |
99 | 7.1292830169449663f, 7.1395513523987936f, |
100 | 7.1497471195046822f, 7.1598713367783890f, |
101 | 7.1699250014423121f, 7.1799090900149344f, |
102 | 7.1898245588800175f, 7.1996723448363644f, |
103 | 7.2094533656289501f, 7.2191685204621611f, |
104 | 7.2288186904958804f, 7.2384047393250785f, |
105 | 7.2479275134435852f, 7.2573878426926521f, |
106 | 7.2667865406949010f, 7.2761244052742375f, |
107 | 7.2854022188622487f, 7.2946207488916270f, |
108 | 7.3037807481771030f, 7.3128829552843557f, |
109 | 7.3219280948873626f, 7.3309168781146167f, |
110 | 7.3398500028846243f, 7.3487281542310771f, |
111 | 7.3575520046180837f, 7.3663222142458160f, |
112 | 7.3750394313469245f, 7.3837042924740519f, |
113 | 7.3923174227787606f, 7.4008794362821843f, |
114 | 7.4093909361377017f, 7.4178525148858982f, |
115 | 7.4262647547020979f, 7.4346282276367245f, |
116 | 7.4429434958487279f, 7.4512111118323289f, |
117 | 7.4594316186372973f, 7.4676055500829976f, |
118 | 7.4757334309663976f, 7.4838157772642563f, |
119 | 7.4918530963296747f, 7.4998458870832056f, |
120 | 7.5077946401986963f, 7.5156998382840427f, |
121 | 7.5235619560570130f, 7.5313814605163118f, |
122 | 7.5391588111080309f, 7.5468944598876364f, |
123 | 7.5545888516776376f, 7.5622424242210728f, |
124 | 7.5698556083309478f, 7.5774288280357486f, |
125 | 7.5849625007211560f, 7.5924570372680806f, |
126 | 7.5999128421871278f, 7.6073303137496104f, |
127 | 7.6147098441152083f, 7.6220518194563764f, |
128 | 7.6293566200796094f, 7.6366246205436487f, |
129 | 7.6438561897747243f, 7.6510516911789281f, |
130 | 7.6582114827517946f, 7.6653359171851764f, |
131 | 7.6724253419714951f, 7.6794800995054464f, |
132 | 7.6865005271832185f, 7.6934869574993252f, |
133 | 7.7004397181410917f, 7.7073591320808825f, |
134 | 7.7142455176661224f, 7.7210991887071855f, |
135 | 7.7279204545631987f, 7.7347096202258383f, |
136 | 7.7414669864011464f, 7.7481928495894605f, |
137 | 7.7548875021634682f, 7.7615512324444795f, |
138 | 7.7681843247769259f, 7.7747870596011736f, |
139 | 7.7813597135246599f, 7.7879025593914317f, |
140 | 7.7944158663501061f, 7.8008998999203047f, |
141 | 7.8073549220576037f, 7.8137811912170374f, |
142 | 7.8201789624151878f, 7.8265484872909150f, |
143 | 7.8328900141647412f, 7.8392037880969436f, |
144 | 7.8454900509443747f, 7.8517490414160571f, |
145 | 7.8579809951275718f, 7.8641861446542797f, |
146 | 7.8703647195834047f, 7.8765169465649993f, |
147 | 7.8826430493618415f, 7.8887432488982591f, |
148 | 7.8948177633079437f, 7.9008668079807486f, |
149 | 7.9068905956085187f, 7.9128893362299619f, |
150 | 7.9188632372745946f, 7.9248125036057812f, |
151 | 7.9307373375628866f, 7.9366379390025709f, |
152 | 7.9425145053392398f, 7.9483672315846778f, |
153 | 7.9541963103868749f, 7.9600019320680805f, |
154 | 7.9657842846620869f, 7.9715435539507719f, |
155 | 7.9772799234999167f, 7.9829935746943103f, |
156 | 7.9886846867721654f, 7.9943534368588577f |
157 | }; |
158 | |
159 | const float kSLog2Table[LOG_LOOKUP_IDX_MAX] = { |
160 | 0.00000000f, 0.00000000f, 2.00000000f, 4.75488750f, |
161 | 8.00000000f, 11.60964047f, 15.50977500f, 19.65148445f, |
162 | 24.00000000f, 28.52932501f, 33.21928095f, 38.05374781f, |
163 | 43.01955001f, 48.10571634f, 53.30296891f, 58.60335893f, |
164 | 64.00000000f, 69.48686830f, 75.05865003f, 80.71062276f, |
165 | 86.43856190f, 92.23866588f, 98.10749561f, 104.04192499f, |
166 | 110.03910002f, 116.09640474f, 122.21143267f, 128.38196256f, |
167 | 134.60593782f, 140.88144886f, 147.20671787f, 153.58008562f, |
168 | 160.00000000f, 166.46500594f, 172.97373660f, 179.52490559f, |
169 | 186.11730005f, 192.74977453f, 199.42124551f, 206.13068654f, |
170 | 212.87712380f, 219.65963219f, 226.47733176f, 233.32938445f, |
171 | 240.21499122f, 247.13338933f, 254.08384998f, 261.06567603f, |
172 | 268.07820003f, 275.12078236f, 282.19280949f, 289.29369244f, |
173 | 296.42286534f, 303.57978409f, 310.76392512f, 317.97478424f, |
174 | 325.21187564f, 332.47473081f, 339.76289772f, 347.07593991f, |
175 | 354.41343574f, 361.77497759f, 369.16017124f, 376.56863518f, |
176 | 384.00000000f, 391.45390785f, 398.93001188f, 406.42797576f, |
177 | 413.94747321f, 421.48818752f, 429.04981119f, 436.63204548f, |
178 | 444.23460010f, 451.85719280f, 459.49954906f, 467.16140179f, |
179 | 474.84249102f, 482.54256363f, 490.26137307f, 497.99867911f, |
180 | 505.75424759f, 513.52785023f, 521.31926438f, 529.12827280f, |
181 | 536.95466351f, 544.79822957f, 552.65876890f, 560.53608414f, |
182 | 568.42998244f, 576.34027536f, 584.26677867f, 592.20931226f, |
183 | 600.16769996f, 608.14176943f, 616.13135206f, 624.13628279f, |
184 | 632.15640007f, 640.19154569f, 648.24156472f, 656.30630539f, |
185 | 664.38561898f, 672.47935976f, 680.58738488f, 688.70955430f, |
186 | 696.84573069f, 704.99577935f, 713.15956818f, 721.33696754f, |
187 | 729.52785023f, 737.73209140f, 745.94956849f, 754.18016116f, |
188 | 762.42375127f, 770.68022275f, 778.94946161f, 787.23135586f, |
189 | 795.52579543f, 803.83267219f, 812.15187982f, 820.48331383f, |
190 | 828.82687147f, 837.18245171f, 845.54995518f, 853.92928416f, |
191 | 862.32034249f, 870.72303558f, 879.13727036f, 887.56295522f, |
192 | 896.00000000f, 904.44831595f, 912.90781569f, 921.37841320f, |
193 | 929.86002376f, 938.35256392f, 946.85595152f, 955.37010560f, |
194 | 963.89494641f, 972.43039537f, 980.97637504f, 989.53280911f, |
195 | 998.09962237f, 1006.67674069f, 1015.26409097f, 1023.86160116f, |
196 | 1032.46920021f, 1041.08681805f, 1049.71438560f, 1058.35183469f, |
197 | 1066.99909811f, 1075.65610955f, 1084.32280357f, 1092.99911564f, |
198 | 1101.68498204f, 1110.38033993f, 1119.08512727f, 1127.79928282f, |
199 | 1136.52274614f, 1145.25545758f, 1153.99735821f, 1162.74838989f, |
200 | 1171.50849518f, 1180.27761738f, 1189.05570047f, 1197.84268914f, |
201 | 1206.63852876f, 1215.44316535f, 1224.25654560f, 1233.07861684f, |
202 | 1241.90932703f, 1250.74862473f, 1259.59645914f, 1268.45278005f, |
203 | 1277.31753781f, 1286.19068338f, 1295.07216828f, 1303.96194457f, |
204 | 1312.85996488f, 1321.76618236f, 1330.68055071f, 1339.60302413f, |
205 | 1348.53355734f, 1357.47210556f, 1366.41862452f, 1375.37307041f, |
206 | 1384.33539991f, 1393.30557020f, 1402.28353887f, 1411.26926400f, |
207 | 1420.26270412f, 1429.26381818f, 1438.27256558f, 1447.28890615f, |
208 | 1456.31280014f, 1465.34420819f, 1474.38309138f, 1483.42941118f, |
209 | 1492.48312945f, 1501.54420843f, 1510.61261078f, 1519.68829949f, |
210 | 1528.77123795f, 1537.86138993f, 1546.95871952f, 1556.06319119f, |
211 | 1565.17476976f, 1574.29342040f, 1583.41910860f, 1592.55180020f, |
212 | 1601.69146137f, 1610.83805860f, 1619.99155871f, 1629.15192882f, |
213 | 1638.31913637f, 1647.49314911f, 1656.67393509f, 1665.86146266f, |
214 | 1675.05570047f, 1684.25661744f, 1693.46418280f, 1702.67836605f, |
215 | 1711.89913698f, 1721.12646563f, 1730.36032233f, 1739.60067768f, |
216 | 1748.84750254f, 1758.10076802f, 1767.36044551f, 1776.62650662f, |
217 | 1785.89892323f, 1795.17766747f, 1804.46271172f, 1813.75402857f, |
218 | 1823.05159087f, 1832.35537170f, 1841.66534438f, 1850.98148244f, |
219 | 1860.30375965f, 1869.63214999f, 1878.96662767f, 1888.30716711f, |
220 | 1897.65374295f, 1907.00633003f, 1916.36490342f, 1925.72943838f, |
221 | 1935.09991037f, 1944.47629506f, 1953.85856831f, 1963.24670620f, |
222 | 1972.64068498f, 1982.04048108f, 1991.44607117f, 2000.85743204f, |
223 | 2010.27454072f, 2019.69737440f, 2029.12591044f, 2038.56012640f |
224 | }; |
225 | |
226 | const VP8LPrefixCode kPrefixEncodeCode[PREFIX_LOOKUP_IDX_MAX] = { |
227 | { 0, 0}, { 0, 0}, { 1, 0}, { 2, 0}, { 3, 0}, { 4, 1}, { 4, 1}, { 5, 1}, |
228 | { 5, 1}, { 6, 2}, { 6, 2}, { 6, 2}, { 6, 2}, { 7, 2}, { 7, 2}, { 7, 2}, |
229 | { 7, 2}, { 8, 3}, { 8, 3}, { 8, 3}, { 8, 3}, { 8, 3}, { 8, 3}, { 8, 3}, |
230 | { 8, 3}, { 9, 3}, { 9, 3}, { 9, 3}, { 9, 3}, { 9, 3}, { 9, 3}, { 9, 3}, |
231 | { 9, 3}, {10, 4}, {10, 4}, {10, 4}, {10, 4}, {10, 4}, {10, 4}, {10, 4}, |
232 | {10, 4}, {10, 4}, {10, 4}, {10, 4}, {10, 4}, {10, 4}, {10, 4}, {10, 4}, |
233 | {10, 4}, {11, 4}, {11, 4}, {11, 4}, {11, 4}, {11, 4}, {11, 4}, {11, 4}, |
234 | {11, 4}, {11, 4}, {11, 4}, {11, 4}, {11, 4}, {11, 4}, {11, 4}, {11, 4}, |
235 | {11, 4}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, |
236 | {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, |
237 | {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, |
238 | {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, |
239 | {12, 5}, {13, 5}, {13, 5}, {13, 5}, {13, 5}, {13, 5}, {13, 5}, {13, 5}, |
240 | {13, 5}, {13, 5}, {13, 5}, {13, 5}, {13, 5}, {13, 5}, {13, 5}, {13, 5}, |
241 | {13, 5}, {13, 5}, {13, 5}, {13, 5}, {13, 5}, {13, 5}, {13, 5}, {13, 5}, |
242 | {13, 5}, {13, 5}, {13, 5}, {13, 5}, {13, 5}, {13, 5}, {13, 5}, {13, 5}, |
243 | {13, 5}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, |
244 | {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, |
245 | {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, |
246 | {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, |
247 | {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, |
248 | {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, |
249 | {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, |
250 | {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, {14, 6}, |
251 | {14, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, |
252 | {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, |
253 | {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, |
254 | {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, |
255 | {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, |
256 | {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, |
257 | {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, |
258 | {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, {15, 6}, |
259 | {15, 6}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, |
260 | {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, |
261 | {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, |
262 | {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, |
263 | {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, |
264 | {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, |
265 | {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, |
266 | {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, |
267 | {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, |
268 | {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, |
269 | {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, |
270 | {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, |
271 | {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, |
272 | {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, |
273 | {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, |
274 | {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, {16, 7}, |
275 | {16, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, |
276 | {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, |
277 | {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, |
278 | {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, |
279 | {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, |
280 | {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, |
281 | {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, |
282 | {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, |
283 | {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, |
284 | {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, |
285 | {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, |
286 | {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, |
287 | {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, |
288 | {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, |
289 | {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, |
290 | {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, |
291 | }; |
292 | |
293 | const uint8_t [PREFIX_LOOKUP_IDX_MAX] = { |
294 | 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 2, 3, 0, 1, 2, 3, |
295 | 0, 1, 2, 3, 4, 5, 6, 7, 0, 1, 2, 3, 4, 5, 6, 7, |
296 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
297 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
298 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
299 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, |
300 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
301 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, |
302 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
303 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, |
304 | 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, |
305 | 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, |
306 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
307 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, |
308 | 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, |
309 | 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, |
310 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
311 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, |
312 | 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, |
313 | 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, |
314 | 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, |
315 | 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, |
316 | 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, |
317 | 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, |
318 | 127, |
319 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
320 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, |
321 | 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, |
322 | 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, |
323 | 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, |
324 | 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, |
325 | 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, |
326 | 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126 |
327 | }; |
328 | |
329 | static float FastSLog2Slow_C(uint32_t v) { |
330 | assert(v >= LOG_LOOKUP_IDX_MAX); |
331 | if (v < APPROX_LOG_WITH_CORRECTION_MAX) { |
332 | #if !defined(WEBP_HAVE_SLOW_CLZ_CTZ) |
333 | // use clz if available |
334 | const int log_cnt = BitsLog2Floor(v) - 7; |
335 | const uint32_t y = 1 << log_cnt; |
336 | int correction = 0; |
337 | const float v_f = (float)v; |
338 | const uint32_t orig_v = v; |
339 | v >>= log_cnt; |
340 | #else |
341 | int log_cnt = 0; |
342 | uint32_t y = 1; |
343 | int correction = 0; |
344 | const float v_f = (float)v; |
345 | const uint32_t orig_v = v; |
346 | do { |
347 | ++log_cnt; |
348 | v = v >> 1; |
349 | y = y << 1; |
350 | } while (v >= LOG_LOOKUP_IDX_MAX); |
351 | #endif |
352 | // vf = (2^log_cnt) * Xf; where y = 2^log_cnt and Xf < 256 |
353 | // Xf = floor(Xf) * (1 + (v % y) / v) |
354 | // log2(Xf) = log2(floor(Xf)) + log2(1 + (v % y) / v) |
355 | // The correction factor: log(1 + d) ~ d; for very small d values, so |
356 | // log2(1 + (v % y) / v) ~ LOG_2_RECIPROCAL * (v % y)/v |
357 | // LOG_2_RECIPROCAL ~ 23/16 |
358 | correction = (23 * (orig_v & (y - 1))) >> 4; |
359 | return v_f * (kLog2Table[v] + log_cnt) + correction; |
360 | } else { |
361 | return (float)(LOG_2_RECIPROCAL * v * log((double)v)); |
362 | } |
363 | } |
364 | |
365 | static float FastLog2Slow_C(uint32_t v) { |
366 | assert(v >= LOG_LOOKUP_IDX_MAX); |
367 | if (v < APPROX_LOG_WITH_CORRECTION_MAX) { |
368 | #if !defined(WEBP_HAVE_SLOW_CLZ_CTZ) |
369 | // use clz if available |
370 | const int log_cnt = BitsLog2Floor(v) - 7; |
371 | const uint32_t y = 1 << log_cnt; |
372 | const uint32_t orig_v = v; |
373 | double log_2; |
374 | v >>= log_cnt; |
375 | #else |
376 | int log_cnt = 0; |
377 | uint32_t y = 1; |
378 | const uint32_t orig_v = v; |
379 | double log_2; |
380 | do { |
381 | ++log_cnt; |
382 | v = v >> 1; |
383 | y = y << 1; |
384 | } while (v >= LOG_LOOKUP_IDX_MAX); |
385 | #endif |
386 | log_2 = kLog2Table[v] + log_cnt; |
387 | if (orig_v >= APPROX_LOG_MAX) { |
388 | // Since the division is still expensive, add this correction factor only |
389 | // for large values of 'v'. |
390 | const int correction = (23 * (orig_v & (y - 1))) >> 4; |
391 | log_2 += (double)correction / orig_v; |
392 | } |
393 | return (float)log_2; |
394 | } else { |
395 | return (float)(LOG_2_RECIPROCAL * log((double)v)); |
396 | } |
397 | } |
398 | |
399 | //------------------------------------------------------------------------------ |
400 | // Methods to calculate Entropy (Shannon). |
401 | |
402 | // Compute the combined Shanon's entropy for distribution {X} and {X+Y} |
403 | static float CombinedShannonEntropy_C(const int X[256], const int Y[256]) { |
404 | int i; |
405 | float retval = 0.f; |
406 | int sumX = 0, sumXY = 0; |
407 | for (i = 0; i < 256; ++i) { |
408 | const int x = X[i]; |
409 | if (x != 0) { |
410 | const int xy = x + Y[i]; |
411 | sumX += x; |
412 | retval -= VP8LFastSLog2(x); |
413 | sumXY += xy; |
414 | retval -= VP8LFastSLog2(xy); |
415 | } else if (Y[i] != 0) { |
416 | sumXY += Y[i]; |
417 | retval -= VP8LFastSLog2(Y[i]); |
418 | } |
419 | } |
420 | retval += VP8LFastSLog2(sumX) + VP8LFastSLog2(sumXY); |
421 | return retval; |
422 | } |
423 | |
424 | void VP8LBitEntropyInit(VP8LBitEntropy* const entropy) { |
425 | entropy->entropy = 0.; |
426 | entropy->sum = 0; |
427 | entropy->nonzeros = 0; |
428 | entropy->max_val = 0; |
429 | entropy->nonzero_code = VP8L_NON_TRIVIAL_SYM; |
430 | } |
431 | |
432 | void VP8LBitsEntropyUnrefined(const uint32_t* const array, int n, |
433 | VP8LBitEntropy* const entropy) { |
434 | int i; |
435 | |
436 | VP8LBitEntropyInit(entropy); |
437 | |
438 | for (i = 0; i < n; ++i) { |
439 | if (array[i] != 0) { |
440 | entropy->sum += array[i]; |
441 | entropy->nonzero_code = i; |
442 | ++entropy->nonzeros; |
443 | entropy->entropy -= VP8LFastSLog2(array[i]); |
444 | if (entropy->max_val < array[i]) { |
445 | entropy->max_val = array[i]; |
446 | } |
447 | } |
448 | } |
449 | entropy->entropy += VP8LFastSLog2(entropy->sum); |
450 | } |
451 | |
452 | static WEBP_INLINE void GetEntropyUnrefinedHelper( |
453 | uint32_t val, int i, uint32_t* const val_prev, int* const i_prev, |
454 | VP8LBitEntropy* const bit_entropy, VP8LStreaks* const stats) { |
455 | const int streak = i - *i_prev; |
456 | |
457 | // Gather info for the bit entropy. |
458 | if (*val_prev != 0) { |
459 | bit_entropy->sum += (*val_prev) * streak; |
460 | bit_entropy->nonzeros += streak; |
461 | bit_entropy->nonzero_code = *i_prev; |
462 | bit_entropy->entropy -= VP8LFastSLog2(*val_prev) * streak; |
463 | if (bit_entropy->max_val < *val_prev) { |
464 | bit_entropy->max_val = *val_prev; |
465 | } |
466 | } |
467 | |
468 | // Gather info for the Huffman cost. |
469 | stats->counts[*val_prev != 0] += (streak > 3); |
470 | stats->streaks[*val_prev != 0][(streak > 3)] += streak; |
471 | |
472 | *val_prev = val; |
473 | *i_prev = i; |
474 | } |
475 | |
476 | static void GetEntropyUnrefined_C(const uint32_t X[], int length, |
477 | VP8LBitEntropy* const bit_entropy, |
478 | VP8LStreaks* const stats) { |
479 | int i; |
480 | int i_prev = 0; |
481 | uint32_t x_prev = X[0]; |
482 | |
483 | memset(stats, 0, sizeof(*stats)); |
484 | VP8LBitEntropyInit(bit_entropy); |
485 | |
486 | for (i = 1; i < length; ++i) { |
487 | const uint32_t x = X[i]; |
488 | if (x != x_prev) { |
489 | GetEntropyUnrefinedHelper(x, i, &x_prev, &i_prev, bit_entropy, stats); |
490 | } |
491 | } |
492 | GetEntropyUnrefinedHelper(0, i, &x_prev, &i_prev, bit_entropy, stats); |
493 | |
494 | bit_entropy->entropy += VP8LFastSLog2(bit_entropy->sum); |
495 | } |
496 | |
497 | static void GetCombinedEntropyUnrefined_C(const uint32_t X[], |
498 | const uint32_t Y[], |
499 | int length, |
500 | VP8LBitEntropy* const bit_entropy, |
501 | VP8LStreaks* const stats) { |
502 | int i = 1; |
503 | int i_prev = 0; |
504 | uint32_t xy_prev = X[0] + Y[0]; |
505 | |
506 | memset(stats, 0, sizeof(*stats)); |
507 | VP8LBitEntropyInit(bit_entropy); |
508 | |
509 | for (i = 1; i < length; ++i) { |
510 | const uint32_t xy = X[i] + Y[i]; |
511 | if (xy != xy_prev) { |
512 | GetEntropyUnrefinedHelper(xy, i, &xy_prev, &i_prev, bit_entropy, stats); |
513 | } |
514 | } |
515 | GetEntropyUnrefinedHelper(0, i, &xy_prev, &i_prev, bit_entropy, stats); |
516 | |
517 | bit_entropy->entropy += VP8LFastSLog2(bit_entropy->sum); |
518 | } |
519 | |
520 | //------------------------------------------------------------------------------ |
521 | |
522 | void VP8LSubtractGreenFromBlueAndRed_C(uint32_t* argb_data, int num_pixels) { |
523 | int i; |
524 | for (i = 0; i < num_pixels; ++i) { |
525 | const int argb = (int)argb_data[i]; |
526 | const int green = (argb >> 8) & 0xff; |
527 | const uint32_t new_r = (((argb >> 16) & 0xff) - green) & 0xff; |
528 | const uint32_t new_b = (((argb >> 0) & 0xff) - green) & 0xff; |
529 | argb_data[i] = ((uint32_t)argb & 0xff00ff00u) | (new_r << 16) | new_b; |
530 | } |
531 | } |
532 | |
533 | static WEBP_INLINE int ColorTransformDelta(int8_t color_pred, int8_t color) { |
534 | return ((int)color_pred * color) >> 5; |
535 | } |
536 | |
537 | static WEBP_INLINE int8_t U32ToS8(uint32_t v) { |
538 | return (int8_t)(v & 0xff); |
539 | } |
540 | |
541 | void VP8LTransformColor_C(const VP8LMultipliers* const m, uint32_t* data, |
542 | int num_pixels) { |
543 | int i; |
544 | for (i = 0; i < num_pixels; ++i) { |
545 | const uint32_t argb = data[i]; |
546 | const int8_t green = U32ToS8(argb >> 8); |
547 | const int8_t red = U32ToS8(argb >> 16); |
548 | int new_red = red & 0xff; |
549 | int new_blue = argb & 0xff; |
550 | new_red -= ColorTransformDelta((int8_t)m->green_to_red_, green); |
551 | new_red &= 0xff; |
552 | new_blue -= ColorTransformDelta((int8_t)m->green_to_blue_, green); |
553 | new_blue -= ColorTransformDelta((int8_t)m->red_to_blue_, red); |
554 | new_blue &= 0xff; |
555 | data[i] = (argb & 0xff00ff00u) | (new_red << 16) | (new_blue); |
556 | } |
557 | } |
558 | |
559 | static WEBP_INLINE uint8_t TransformColorRed(uint8_t green_to_red, |
560 | uint32_t argb) { |
561 | const int8_t green = U32ToS8(argb >> 8); |
562 | int new_red = argb >> 16; |
563 | new_red -= ColorTransformDelta((int8_t)green_to_red, green); |
564 | return (new_red & 0xff); |
565 | } |
566 | |
567 | static WEBP_INLINE uint8_t TransformColorBlue(uint8_t green_to_blue, |
568 | uint8_t red_to_blue, |
569 | uint32_t argb) { |
570 | const int8_t green = U32ToS8(argb >> 8); |
571 | const int8_t red = U32ToS8(argb >> 16); |
572 | int new_blue = argb & 0xff; |
573 | new_blue -= ColorTransformDelta((int8_t)green_to_blue, green); |
574 | new_blue -= ColorTransformDelta((int8_t)red_to_blue, red); |
575 | return (new_blue & 0xff); |
576 | } |
577 | |
578 | void VP8LCollectColorRedTransforms_C(const uint32_t* argb, int stride, |
579 | int tile_width, int tile_height, |
580 | int green_to_red, int histo[]) { |
581 | while (tile_height-- > 0) { |
582 | int x; |
583 | for (x = 0; x < tile_width; ++x) { |
584 | ++histo[TransformColorRed((uint8_t)green_to_red, argb[x])]; |
585 | } |
586 | argb += stride; |
587 | } |
588 | } |
589 | |
590 | void VP8LCollectColorBlueTransforms_C(const uint32_t* argb, int stride, |
591 | int tile_width, int tile_height, |
592 | int green_to_blue, int red_to_blue, |
593 | int histo[]) { |
594 | while (tile_height-- > 0) { |
595 | int x; |
596 | for (x = 0; x < tile_width; ++x) { |
597 | ++histo[TransformColorBlue((uint8_t)green_to_blue, (uint8_t)red_to_blue, |
598 | argb[x])]; |
599 | } |
600 | argb += stride; |
601 | } |
602 | } |
603 | |
604 | //------------------------------------------------------------------------------ |
605 | |
606 | static int VectorMismatch_C(const uint32_t* const array1, |
607 | const uint32_t* const array2, int length) { |
608 | int match_len = 0; |
609 | |
610 | while (match_len < length && array1[match_len] == array2[match_len]) { |
611 | ++match_len; |
612 | } |
613 | return match_len; |
614 | } |
615 | |
616 | // Bundles multiple (1, 2, 4 or 8) pixels into a single pixel. |
617 | void VP8LBundleColorMap_C(const uint8_t* const row, int width, int xbits, |
618 | uint32_t* dst) { |
619 | int x; |
620 | if (xbits > 0) { |
621 | const int bit_depth = 1 << (3 - xbits); |
622 | const int mask = (1 << xbits) - 1; |
623 | uint32_t code = 0xff000000; |
624 | for (x = 0; x < width; ++x) { |
625 | const int xsub = x & mask; |
626 | if (xsub == 0) { |
627 | code = 0xff000000; |
628 | } |
629 | code |= row[x] << (8 + bit_depth * xsub); |
630 | dst[x >> xbits] = code; |
631 | } |
632 | } else { |
633 | for (x = 0; x < width; ++x) dst[x] = 0xff000000 | (row[x] << 8); |
634 | } |
635 | } |
636 | |
637 | //------------------------------------------------------------------------------ |
638 | |
639 | static float (const uint32_t* population, int length) { |
640 | int i; |
641 | float cost = 0.f; |
642 | for (i = 2; i < length - 2; ++i) cost += (i >> 1) * population[i + 2]; |
643 | return cost; |
644 | } |
645 | |
646 | static float (const uint32_t* X, const uint32_t* Y, |
647 | int length) { |
648 | int i; |
649 | float cost = 0.f; |
650 | for (i = 2; i < length - 2; ++i) { |
651 | const int xy = X[i + 2] + Y[i + 2]; |
652 | cost += (i >> 1) * xy; |
653 | } |
654 | return cost; |
655 | } |
656 | |
657 | //------------------------------------------------------------------------------ |
658 | |
659 | static void AddVector_C(const uint32_t* a, const uint32_t* b, uint32_t* out, |
660 | int size) { |
661 | int i; |
662 | for (i = 0; i < size; ++i) out[i] = a[i] + b[i]; |
663 | } |
664 | |
665 | static void AddVectorEq_C(const uint32_t* a, uint32_t* out, int size) { |
666 | int i; |
667 | for (i = 0; i < size; ++i) out[i] += a[i]; |
668 | } |
669 | |
670 | #define ADD(X, ARG, LEN) do { \ |
671 | if (a->is_used_[X]) { \ |
672 | if (b->is_used_[X]) { \ |
673 | VP8LAddVector(a->ARG, b->ARG, out->ARG, (LEN)); \ |
674 | } else { \ |
675 | memcpy(&out->ARG[0], &a->ARG[0], (LEN) * sizeof(out->ARG[0])); \ |
676 | } \ |
677 | } else if (b->is_used_[X]) { \ |
678 | memcpy(&out->ARG[0], &b->ARG[0], (LEN) * sizeof(out->ARG[0])); \ |
679 | } else { \ |
680 | memset(&out->ARG[0], 0, (LEN) * sizeof(out->ARG[0])); \ |
681 | } \ |
682 | } while (0) |
683 | |
684 | #define ADD_EQ(X, ARG, LEN) do { \ |
685 | if (a->is_used_[X]) { \ |
686 | if (out->is_used_[X]) { \ |
687 | VP8LAddVectorEq(a->ARG, out->ARG, (LEN)); \ |
688 | } else { \ |
689 | memcpy(&out->ARG[0], &a->ARG[0], (LEN) * sizeof(out->ARG[0])); \ |
690 | } \ |
691 | } \ |
692 | } while (0) |
693 | |
694 | void VP8LHistogramAdd(const VP8LHistogram* const a, |
695 | const VP8LHistogram* const b, VP8LHistogram* const out) { |
696 | int i; |
697 | const int literal_size = VP8LHistogramNumCodes(a->palette_code_bits_); |
698 | assert(a->palette_code_bits_ == b->palette_code_bits_); |
699 | |
700 | if (b != out) { |
701 | ADD(0, literal_, literal_size); |
702 | ADD(1, red_, NUM_LITERAL_CODES); |
703 | ADD(2, blue_, NUM_LITERAL_CODES); |
704 | ADD(3, alpha_, NUM_LITERAL_CODES); |
705 | ADD(4, distance_, NUM_DISTANCE_CODES); |
706 | for (i = 0; i < 5; ++i) { |
707 | out->is_used_[i] = (a->is_used_[i] | b->is_used_[i]); |
708 | } |
709 | } else { |
710 | ADD_EQ(0, literal_, literal_size); |
711 | ADD_EQ(1, red_, NUM_LITERAL_CODES); |
712 | ADD_EQ(2, blue_, NUM_LITERAL_CODES); |
713 | ADD_EQ(3, alpha_, NUM_LITERAL_CODES); |
714 | ADD_EQ(4, distance_, NUM_DISTANCE_CODES); |
715 | for (i = 0; i < 5; ++i) out->is_used_[i] |= a->is_used_[i]; |
716 | } |
717 | } |
718 | #undef ADD |
719 | #undef ADD_EQ |
720 | |
721 | //------------------------------------------------------------------------------ |
722 | // Image transforms. |
723 | |
724 | static void PredictorSub0_C(const uint32_t* in, const uint32_t* upper, |
725 | int num_pixels, uint32_t* out) { |
726 | int i; |
727 | for (i = 0; i < num_pixels; ++i) out[i] = VP8LSubPixels(in[i], ARGB_BLACK); |
728 | (void)upper; |
729 | } |
730 | |
731 | static void PredictorSub1_C(const uint32_t* in, const uint32_t* upper, |
732 | int num_pixels, uint32_t* out) { |
733 | int i; |
734 | for (i = 0; i < num_pixels; ++i) out[i] = VP8LSubPixels(in[i], in[i - 1]); |
735 | (void)upper; |
736 | } |
737 | |
738 | // It subtracts the prediction from the input pixel and stores the residual |
739 | // in the output pixel. |
740 | #define GENERATE_PREDICTOR_SUB(PREDICTOR_I) \ |
741 | static void PredictorSub##PREDICTOR_I##_C(const uint32_t* in, \ |
742 | const uint32_t* upper, \ |
743 | int num_pixels, uint32_t* out) { \ |
744 | int x; \ |
745 | assert(upper != NULL); \ |
746 | for (x = 0; x < num_pixels; ++x) { \ |
747 | const uint32_t pred = \ |
748 | VP8LPredictor##PREDICTOR_I##_C(&in[x - 1], upper + x); \ |
749 | out[x] = VP8LSubPixels(in[x], pred); \ |
750 | } \ |
751 | } |
752 | |
753 | GENERATE_PREDICTOR_SUB(2) |
754 | GENERATE_PREDICTOR_SUB(3) |
755 | GENERATE_PREDICTOR_SUB(4) |
756 | GENERATE_PREDICTOR_SUB(5) |
757 | GENERATE_PREDICTOR_SUB(6) |
758 | GENERATE_PREDICTOR_SUB(7) |
759 | GENERATE_PREDICTOR_SUB(8) |
760 | GENERATE_PREDICTOR_SUB(9) |
761 | GENERATE_PREDICTOR_SUB(10) |
762 | GENERATE_PREDICTOR_SUB(11) |
763 | GENERATE_PREDICTOR_SUB(12) |
764 | GENERATE_PREDICTOR_SUB(13) |
765 | |
766 | //------------------------------------------------------------------------------ |
767 | |
768 | VP8LProcessEncBlueAndRedFunc VP8LSubtractGreenFromBlueAndRed; |
769 | |
770 | VP8LTransformColorFunc VP8LTransformColor; |
771 | |
772 | VP8LCollectColorBlueTransformsFunc VP8LCollectColorBlueTransforms; |
773 | VP8LCollectColorRedTransformsFunc VP8LCollectColorRedTransforms; |
774 | |
775 | VP8LFastLog2SlowFunc VP8LFastLog2Slow; |
776 | VP8LFastLog2SlowFunc VP8LFastSLog2Slow; |
777 | |
778 | VP8LCostFunc ; |
779 | VP8LCostCombinedFunc ; |
780 | VP8LCombinedShannonEntropyFunc VP8LCombinedShannonEntropy; |
781 | |
782 | VP8LGetEntropyUnrefinedFunc VP8LGetEntropyUnrefined; |
783 | VP8LGetCombinedEntropyUnrefinedFunc VP8LGetCombinedEntropyUnrefined; |
784 | |
785 | VP8LAddVectorFunc VP8LAddVector; |
786 | VP8LAddVectorEqFunc VP8LAddVectorEq; |
787 | |
788 | VP8LVectorMismatchFunc VP8LVectorMismatch; |
789 | VP8LBundleColorMapFunc VP8LBundleColorMap; |
790 | |
791 | VP8LPredictorAddSubFunc [16]; |
792 | VP8LPredictorAddSubFunc [16]; |
793 | |
794 | extern VP8CPUInfo VP8GetCPUInfo; |
795 | extern void VP8LEncDspInitSSE2(void); |
796 | extern void VP8LEncDspInitSSE41(void); |
797 | extern void VP8LEncDspInitNEON(void); |
798 | extern void VP8LEncDspInitMIPS32(void); |
799 | extern void VP8LEncDspInitMIPSdspR2(void); |
800 | extern void VP8LEncDspInitMSA(void); |
801 | |
802 | WEBP_DSP_INIT_FUNC(VP8LEncDspInit) { |
803 | VP8LDspInit(); |
804 | |
805 | #if !WEBP_NEON_OMIT_C_CODE |
806 | VP8LSubtractGreenFromBlueAndRed = VP8LSubtractGreenFromBlueAndRed_C; |
807 | |
808 | VP8LTransformColor = VP8LTransformColor_C; |
809 | #endif |
810 | |
811 | VP8LCollectColorBlueTransforms = VP8LCollectColorBlueTransforms_C; |
812 | VP8LCollectColorRedTransforms = VP8LCollectColorRedTransforms_C; |
813 | |
814 | VP8LFastLog2Slow = FastLog2Slow_C; |
815 | VP8LFastSLog2Slow = FastSLog2Slow_C; |
816 | |
817 | VP8LExtraCost = ExtraCost_C; |
818 | VP8LExtraCostCombined = ExtraCostCombined_C; |
819 | VP8LCombinedShannonEntropy = CombinedShannonEntropy_C; |
820 | |
821 | VP8LGetEntropyUnrefined = GetEntropyUnrefined_C; |
822 | VP8LGetCombinedEntropyUnrefined = GetCombinedEntropyUnrefined_C; |
823 | |
824 | VP8LAddVector = AddVector_C; |
825 | VP8LAddVectorEq = AddVectorEq_C; |
826 | |
827 | VP8LVectorMismatch = VectorMismatch_C; |
828 | VP8LBundleColorMap = VP8LBundleColorMap_C; |
829 | |
830 | VP8LPredictorsSub[0] = PredictorSub0_C; |
831 | VP8LPredictorsSub[1] = PredictorSub1_C; |
832 | VP8LPredictorsSub[2] = PredictorSub2_C; |
833 | VP8LPredictorsSub[3] = PredictorSub3_C; |
834 | VP8LPredictorsSub[4] = PredictorSub4_C; |
835 | VP8LPredictorsSub[5] = PredictorSub5_C; |
836 | VP8LPredictorsSub[6] = PredictorSub6_C; |
837 | VP8LPredictorsSub[7] = PredictorSub7_C; |
838 | VP8LPredictorsSub[8] = PredictorSub8_C; |
839 | VP8LPredictorsSub[9] = PredictorSub9_C; |
840 | VP8LPredictorsSub[10] = PredictorSub10_C; |
841 | VP8LPredictorsSub[11] = PredictorSub11_C; |
842 | VP8LPredictorsSub[12] = PredictorSub12_C; |
843 | VP8LPredictorsSub[13] = PredictorSub13_C; |
844 | VP8LPredictorsSub[14] = PredictorSub0_C; // <- padding security sentinels |
845 | VP8LPredictorsSub[15] = PredictorSub0_C; |
846 | |
847 | VP8LPredictorsSub_C[0] = PredictorSub0_C; |
848 | VP8LPredictorsSub_C[1] = PredictorSub1_C; |
849 | VP8LPredictorsSub_C[2] = PredictorSub2_C; |
850 | VP8LPredictorsSub_C[3] = PredictorSub3_C; |
851 | VP8LPredictorsSub_C[4] = PredictorSub4_C; |
852 | VP8LPredictorsSub_C[5] = PredictorSub5_C; |
853 | VP8LPredictorsSub_C[6] = PredictorSub6_C; |
854 | VP8LPredictorsSub_C[7] = PredictorSub7_C; |
855 | VP8LPredictorsSub_C[8] = PredictorSub8_C; |
856 | VP8LPredictorsSub_C[9] = PredictorSub9_C; |
857 | VP8LPredictorsSub_C[10] = PredictorSub10_C; |
858 | VP8LPredictorsSub_C[11] = PredictorSub11_C; |
859 | VP8LPredictorsSub_C[12] = PredictorSub12_C; |
860 | VP8LPredictorsSub_C[13] = PredictorSub13_C; |
861 | VP8LPredictorsSub_C[14] = PredictorSub0_C; // <- padding security sentinels |
862 | VP8LPredictorsSub_C[15] = PredictorSub0_C; |
863 | |
864 | // If defined, use CPUInfo() to overwrite some pointers with faster versions. |
865 | if (VP8GetCPUInfo != NULL) { |
866 | #if defined(WEBP_HAVE_SSE2) |
867 | if (VP8GetCPUInfo(kSSE2)) { |
868 | VP8LEncDspInitSSE2(); |
869 | #if defined(WEBP_HAVE_SSE41) |
870 | if (VP8GetCPUInfo(kSSE4_1)) { |
871 | VP8LEncDspInitSSE41(); |
872 | } |
873 | #endif |
874 | } |
875 | #endif |
876 | #if defined(WEBP_USE_MIPS32) |
877 | if (VP8GetCPUInfo(kMIPS32)) { |
878 | VP8LEncDspInitMIPS32(); |
879 | } |
880 | #endif |
881 | #if defined(WEBP_USE_MIPS_DSP_R2) |
882 | if (VP8GetCPUInfo(kMIPSdspR2)) { |
883 | VP8LEncDspInitMIPSdspR2(); |
884 | } |
885 | #endif |
886 | #if defined(WEBP_USE_MSA) |
887 | if (VP8GetCPUInfo(kMSA)) { |
888 | VP8LEncDspInitMSA(); |
889 | } |
890 | #endif |
891 | } |
892 | |
893 | #if defined(WEBP_HAVE_NEON) |
894 | if (WEBP_NEON_OMIT_C_CODE || |
895 | (VP8GetCPUInfo != NULL && VP8GetCPUInfo(kNEON))) { |
896 | VP8LEncDspInitNEON(); |
897 | } |
898 | #endif |
899 | |
900 | assert(VP8LSubtractGreenFromBlueAndRed != NULL); |
901 | assert(VP8LTransformColor != NULL); |
902 | assert(VP8LCollectColorBlueTransforms != NULL); |
903 | assert(VP8LCollectColorRedTransforms != NULL); |
904 | assert(VP8LFastLog2Slow != NULL); |
905 | assert(VP8LFastSLog2Slow != NULL); |
906 | assert(VP8LExtraCost != NULL); |
907 | assert(VP8LExtraCostCombined != NULL); |
908 | assert(VP8LCombinedShannonEntropy != NULL); |
909 | assert(VP8LGetEntropyUnrefined != NULL); |
910 | assert(VP8LGetCombinedEntropyUnrefined != NULL); |
911 | assert(VP8LAddVector != NULL); |
912 | assert(VP8LAddVectorEq != NULL); |
913 | assert(VP8LVectorMismatch != NULL); |
914 | assert(VP8LBundleColorMap != NULL); |
915 | assert(VP8LPredictorsSub[0] != NULL); |
916 | assert(VP8LPredictorsSub[1] != NULL); |
917 | assert(VP8LPredictorsSub[2] != NULL); |
918 | assert(VP8LPredictorsSub[3] != NULL); |
919 | assert(VP8LPredictorsSub[4] != NULL); |
920 | assert(VP8LPredictorsSub[5] != NULL); |
921 | assert(VP8LPredictorsSub[6] != NULL); |
922 | assert(VP8LPredictorsSub[7] != NULL); |
923 | assert(VP8LPredictorsSub[8] != NULL); |
924 | assert(VP8LPredictorsSub[9] != NULL); |
925 | assert(VP8LPredictorsSub[10] != NULL); |
926 | assert(VP8LPredictorsSub[11] != NULL); |
927 | assert(VP8LPredictorsSub[12] != NULL); |
928 | assert(VP8LPredictorsSub[13] != NULL); |
929 | assert(VP8LPredictorsSub[14] != NULL); |
930 | assert(VP8LPredictorsSub[15] != NULL); |
931 | assert(VP8LPredictorsSub_C[0] != NULL); |
932 | assert(VP8LPredictorsSub_C[1] != NULL); |
933 | assert(VP8LPredictorsSub_C[2] != NULL); |
934 | assert(VP8LPredictorsSub_C[3] != NULL); |
935 | assert(VP8LPredictorsSub_C[4] != NULL); |
936 | assert(VP8LPredictorsSub_C[5] != NULL); |
937 | assert(VP8LPredictorsSub_C[6] != NULL); |
938 | assert(VP8LPredictorsSub_C[7] != NULL); |
939 | assert(VP8LPredictorsSub_C[8] != NULL); |
940 | assert(VP8LPredictorsSub_C[9] != NULL); |
941 | assert(VP8LPredictorsSub_C[10] != NULL); |
942 | assert(VP8LPredictorsSub_C[11] != NULL); |
943 | assert(VP8LPredictorsSub_C[12] != NULL); |
944 | assert(VP8LPredictorsSub_C[13] != NULL); |
945 | assert(VP8LPredictorsSub_C[14] != NULL); |
946 | assert(VP8LPredictorsSub_C[15] != NULL); |
947 | } |
948 | |
949 | //------------------------------------------------------------------------------ |
950 | |