epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright 2006 The Android Open Source Project |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
| 8 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 9 | |
| 10 | #include "SkFilterProc.h" |
| 11 | |
| 12 | /* [1-x 1-y] [x 1-y] |
| 13 | [1-x y] [x y] |
| 14 | */ |
| 15 | |
| 16 | static unsigned bilerp00(unsigned a00, unsigned a01, unsigned a10, unsigned a11) { return a00; } |
| 17 | static unsigned bilerp01(unsigned a00, unsigned a01, unsigned a10, unsigned a11) { return (3 * a00 + a01) >> 2; } |
| 18 | static unsigned bilerp02(unsigned a00, unsigned a01, unsigned a10, unsigned a11) { return (a00 + a01) >> 1; } |
| 19 | static unsigned bilerp03(unsigned a00, unsigned a01, unsigned a10, unsigned a11) { return (a00 + 3 * a01) >> 2; } |
| 20 | |
| 21 | static unsigned bilerp10(unsigned a00, unsigned a01, unsigned a10, unsigned a11) { return (3 * a00 + a10) >> 2; } |
| 22 | static unsigned bilerp11(unsigned a00, unsigned a01, unsigned a10, unsigned a11) { return (9 * a00 + 3 * (a01 + a10) + a11) >> 4; } |
| 23 | static unsigned bilerp12(unsigned a00, unsigned a01, unsigned a10, unsigned a11) { return (3 * (a00 + a01) + a10 + a11) >> 3; } |
| 24 | static unsigned bilerp13(unsigned a00, unsigned a01, unsigned a10, unsigned a11) { return (9 * a01 + 3 * (a00 + a11) + a10) >> 4; } |
| 25 | |
| 26 | static unsigned bilerp20(unsigned a00, unsigned a01, unsigned a10, unsigned a11) { return (a00 + a10) >> 1; } |
| 27 | static unsigned bilerp21(unsigned a00, unsigned a01, unsigned a10, unsigned a11) { return (3 * (a00 + a10) + a01 + a11) >> 3; } |
| 28 | static unsigned bilerp22(unsigned a00, unsigned a01, unsigned a10, unsigned a11) { return (a00 + a01 + a10 + a11) >> 2; } |
| 29 | static unsigned bilerp23(unsigned a00, unsigned a01, unsigned a10, unsigned a11) { return (3 * (a01 + a11) + a00 + a10) >> 3; } |
| 30 | |
| 31 | static unsigned bilerp30(unsigned a00, unsigned a01, unsigned a10, unsigned a11) { return (a00 + 3 * a10) >> 2; } |
| 32 | static unsigned bilerp31(unsigned a00, unsigned a01, unsigned a10, unsigned a11) { return (9 * a10 + 3 * (a00 + a11) + a01) >> 4; } |
| 33 | static unsigned bilerp32(unsigned a00, unsigned a01, unsigned a10, unsigned a11) { return (3 * (a10 + a11) + a00 + a01) >> 3; } |
| 34 | static unsigned bilerp33(unsigned a00, unsigned a01, unsigned a10, unsigned a11) { return (9 * a11 + 3 * (a01 + a10) + a00) >> 4; } |
| 35 | |
| 36 | static const SkFilterProc gBilerpProcs[4 * 4] = { |
| 37 | bilerp00, bilerp01, bilerp02, bilerp03, |
| 38 | bilerp10, bilerp11, bilerp12, bilerp13, |
| 39 | bilerp20, bilerp21, bilerp22, bilerp23, |
| 40 | bilerp30, bilerp31, bilerp32, bilerp33 |
| 41 | }; |
| 42 | |
| 43 | const SkFilterProc* SkGetBilinearFilterProcTable() |
| 44 | { |
| 45 | return gBilerpProcs; |
| 46 | } |
| 47 | |
| 48 | /////////////////////////////////////////////////////////////////////////////// |
| 49 | /////////////////////////////////////////////////////////////////////////////// |
| 50 | |
| 51 | #define MASK 0xFF00FF |
| 52 | #define LO_PAIR(x) ((x) & MASK) |
| 53 | #define HI_PAIR(x) (((x) >> 8) & MASK) |
| 54 | #define COMBINE(lo, hi) (((lo) & ~0xFF00) | (((hi) & ~0xFF00) << 8)) |
| 55 | |
| 56 | /////////////////////////////////////////////////////////////////////////////// |
| 57 | |
| 58 | static unsigned bilerp4_00(uint32_t c00, uint32_t c01, uint32_t c10, uint32_t c11) { |
| 59 | return c00; |
| 60 | } |
| 61 | static unsigned bilerp4_01(uint32_t c00, uint32_t c01, uint32_t c10, uint32_t c11) { |
| 62 | uint32_t lo = (3 * LO_PAIR(c00) + LO_PAIR(c01)) >> 2; |
| 63 | uint32_t hi = (3 * HI_PAIR(c00) + HI_PAIR(c01)) >> 2; |
| 64 | return COMBINE(lo, hi); |
| 65 | } |
| 66 | static unsigned bilerp4_02(uint32_t c00, uint32_t c01, uint32_t c10, uint32_t c11) { |
| 67 | uint32_t lo = (LO_PAIR(c00) + LO_PAIR(c01)) >> 1; |
| 68 | uint32_t hi = (HI_PAIR(c00) + HI_PAIR(c01)) >> 1; |
| 69 | return COMBINE(lo, hi); |
| 70 | } |
| 71 | static unsigned bilerp4_03(uint32_t c00, uint32_t c01, uint32_t c10, uint32_t c11) { |
| 72 | uint32_t lo = (LO_PAIR(c00) + 3 * LO_PAIR(c01)) >> 2; |
| 73 | uint32_t hi = (HI_PAIR(c00) + 3 * HI_PAIR(c01)) >> 2; |
| 74 | return COMBINE(lo, hi); |
| 75 | } |
| 76 | |
| 77 | static unsigned bilerp4_10(uint32_t c00, uint32_t c01, uint32_t c10, uint32_t c11) { |
| 78 | uint32_t lo = (3 * LO_PAIR(c00) + LO_PAIR(c10)) >> 2; |
| 79 | uint32_t hi = (3 * HI_PAIR(c00) + HI_PAIR(c10)) >> 2; |
| 80 | return COMBINE(lo, hi); |
| 81 | } |
| 82 | static unsigned bilerp4_11(uint32_t c00, uint32_t c01, uint32_t c10, uint32_t c11) { |
| 83 | uint32_t lo = (9 * LO_PAIR(c00) + 3 * (LO_PAIR(c01) + LO_PAIR(c10)) + LO_PAIR(c11)) >> 4; |
| 84 | uint32_t hi = (9 * HI_PAIR(c00) + 3 * (HI_PAIR(c01) + HI_PAIR(c10)) + HI_PAIR(c11)) >> 4; |
| 85 | return COMBINE(lo, hi); |
| 86 | } |
| 87 | static unsigned bilerp4_12(uint32_t c00, uint32_t c01, uint32_t c10, uint32_t c11) { |
| 88 | uint32_t lo = (3 * (LO_PAIR(c00) + LO_PAIR(c01)) + LO_PAIR(c10) + LO_PAIR(c11)) >> 3; |
| 89 | uint32_t hi = (3 * (HI_PAIR(c00) + HI_PAIR(c01)) + HI_PAIR(c10) + HI_PAIR(c11)) >> 3; |
| 90 | return COMBINE(lo, hi); |
| 91 | } |
| 92 | static unsigned bilerp4_13(uint32_t c00, uint32_t c01, uint32_t c10, uint32_t c11) { |
| 93 | uint32_t lo = (9 * LO_PAIR(c01) + 3 * (LO_PAIR(c00) + LO_PAIR(c11)) + LO_PAIR(c10)) >> 4; |
| 94 | uint32_t hi = (9 * HI_PAIR(c01) + 3 * (HI_PAIR(c00) + HI_PAIR(c11)) + HI_PAIR(c10)) >> 4; |
| 95 | return COMBINE(lo, hi); |
| 96 | } |
| 97 | |
| 98 | static unsigned bilerp4_20(uint32_t c00, uint32_t c01, uint32_t c10, uint32_t c11) { |
| 99 | uint32_t lo = (LO_PAIR(c00) + LO_PAIR(c10)) >> 1; |
| 100 | uint32_t hi = (HI_PAIR(c00) + HI_PAIR(c10)) >> 1; |
| 101 | return COMBINE(lo, hi); |
| 102 | } |
| 103 | static unsigned bilerp4_21(uint32_t c00, uint32_t c01, uint32_t c10, uint32_t c11) { |
| 104 | uint32_t lo = (3 * (LO_PAIR(c00) + LO_PAIR(c10)) + LO_PAIR(c01) + LO_PAIR(c11)) >> 3; |
| 105 | uint32_t hi = (3 * (HI_PAIR(c00) + HI_PAIR(c10)) + HI_PAIR(c01) + HI_PAIR(c11)) >> 3; |
| 106 | return COMBINE(lo, hi); |
| 107 | } |
| 108 | static unsigned bilerp4_22(uint32_t c00, uint32_t c01, uint32_t c10, uint32_t c11) { |
| 109 | uint32_t lo = (LO_PAIR(c00) + LO_PAIR(c01) + LO_PAIR(c10) + LO_PAIR(c11)) >> 2; |
| 110 | uint32_t hi = (HI_PAIR(c00) + HI_PAIR(c01) + HI_PAIR(c10) + HI_PAIR(c11)) >> 2; |
| 111 | return COMBINE(lo, hi); |
| 112 | } |
| 113 | static unsigned bilerp4_23(uint32_t c00, uint32_t c01, uint32_t c10, uint32_t c11) { |
| 114 | uint32_t lo = (3 * (LO_PAIR(c01) + LO_PAIR(c11)) + LO_PAIR(c00) + LO_PAIR(c10)) >> 3; |
| 115 | uint32_t hi = (3 * (HI_PAIR(c01) + HI_PAIR(c11)) + HI_PAIR(c00) + HI_PAIR(c10)) >> 3; |
| 116 | return COMBINE(lo, hi); |
| 117 | } |
| 118 | |
| 119 | static unsigned bilerp4_30(uint32_t c00, uint32_t c01, uint32_t c10, uint32_t c11) { |
| 120 | uint32_t lo = (LO_PAIR(c00) + 3 * LO_PAIR(c10)) >> 2; |
| 121 | uint32_t hi = (HI_PAIR(c00) + 3 * HI_PAIR(c10)) >> 2; |
| 122 | return COMBINE(lo, hi); |
| 123 | } |
| 124 | static unsigned bilerp4_31(uint32_t c00, uint32_t c01, uint32_t c10, uint32_t c11) { |
| 125 | uint32_t lo = (9 * LO_PAIR(c10) + 3 * (LO_PAIR(c00) + LO_PAIR(c11)) + LO_PAIR(c01)) >> 4; |
| 126 | uint32_t hi = (9 * HI_PAIR(c10) + 3 * (HI_PAIR(c00) + HI_PAIR(c11)) + HI_PAIR(c01)) >> 4; |
| 127 | return COMBINE(lo, hi); |
| 128 | } |
| 129 | static unsigned bilerp4_32(uint32_t c00, uint32_t c01, uint32_t c10, uint32_t c11) { |
| 130 | uint32_t lo = (3 * (LO_PAIR(c10) + LO_PAIR(c11)) + LO_PAIR(c00) + LO_PAIR(c01)) >> 3; |
| 131 | uint32_t hi = (3 * (HI_PAIR(c10) + HI_PAIR(c11)) + HI_PAIR(c00) + HI_PAIR(c01)) >> 3; |
| 132 | return COMBINE(lo, hi); |
| 133 | } |
| 134 | static unsigned bilerp4_33(uint32_t c00, uint32_t c01, uint32_t c10, uint32_t c11) { |
| 135 | uint32_t lo = (9 * LO_PAIR(c11) + 3 * (LO_PAIR(c01) + LO_PAIR(c10)) + LO_PAIR(c00)) >> 4; |
| 136 | uint32_t hi = (9 * HI_PAIR(c11) + 3 * (HI_PAIR(c01) + HI_PAIR(c10)) + HI_PAIR(c00)) >> 4; |
| 137 | return COMBINE(lo, hi); |
| 138 | } |
| 139 | |
| 140 | static const SkFilter32Proc gBilerp32Procs[4 * 4] = { |
| 141 | bilerp4_00, bilerp4_01, bilerp4_02, bilerp4_03, |
| 142 | bilerp4_10, bilerp4_11, bilerp4_12, bilerp4_13, |
| 143 | bilerp4_20, bilerp4_21, bilerp4_22, bilerp4_23, |
| 144 | bilerp4_30, bilerp4_31, bilerp4_32, bilerp4_33 |
| 145 | }; |
| 146 | |
| 147 | const SkFilter32Proc* SkGetFilter32ProcTable() |
| 148 | { |
| 149 | return gBilerp32Procs; |
| 150 | } |
| 151 | |
| 152 | /////////////////////////////////////////////////////////////////////////////// |
| 153 | |
agl@chromium.org | 55747cc | 2009-12-18 22:50:15 +0000 | [diff] [blame] | 154 | static uint32_t bilerptr00(const uint32_t* a00, const uint32_t* a01, const uint32_t* a10, const uint32_t* a11) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 155 | return *a00; |
| 156 | } |
agl@chromium.org | 55747cc | 2009-12-18 22:50:15 +0000 | [diff] [blame] | 157 | static uint32_t bilerptr01(const uint32_t* a00, const uint32_t* a01, const uint32_t* a10, const uint32_t* a11) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 158 | uint32_t c00 = *a00; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame^] | 159 | uint32_t c01 = *a01; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 160 | uint32_t lo = (3 * LO_PAIR(c00) + LO_PAIR(c01)) >> 2; |
| 161 | uint32_t hi = (3 * HI_PAIR(c00) + HI_PAIR(c01)) >> 2; |
| 162 | return COMBINE(lo, hi); |
| 163 | } |
agl@chromium.org | 55747cc | 2009-12-18 22:50:15 +0000 | [diff] [blame] | 164 | static uint32_t bilerptr02(const uint32_t* a00, const uint32_t* a01, const uint32_t* a10, const uint32_t* a11) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 165 | uint32_t c00 = *a00; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame^] | 166 | uint32_t c01 = *a01; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 167 | uint32_t lo = (LO_PAIR(c00) + LO_PAIR(c01)) >> 1; |
| 168 | uint32_t hi = (HI_PAIR(c00) + HI_PAIR(c01)) >> 1; |
| 169 | return COMBINE(lo, hi); |
| 170 | } |
agl@chromium.org | 55747cc | 2009-12-18 22:50:15 +0000 | [diff] [blame] | 171 | static uint32_t bilerptr03(const uint32_t* a00, const uint32_t* a01, const uint32_t* a10, const uint32_t* a11) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 172 | uint32_t c00 = *a00; |
| 173 | uint32_t c01 = *a01; |
| 174 | uint32_t lo = (LO_PAIR(c00) + 3 * LO_PAIR(c01)) >> 2; |
| 175 | uint32_t hi = (HI_PAIR(c00) + 3 * HI_PAIR(c01)) >> 2; |
| 176 | return COMBINE(lo, hi); |
| 177 | } |
| 178 | |
agl@chromium.org | 55747cc | 2009-12-18 22:50:15 +0000 | [diff] [blame] | 179 | static uint32_t bilerptr10(const uint32_t* a00, const uint32_t* a01, const uint32_t* a10, const uint32_t* a11) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 180 | uint32_t c00 = *a00; |
| 181 | uint32_t c10 = *a10; |
| 182 | uint32_t lo = (3 * LO_PAIR(c00) + LO_PAIR(c10)) >> 2; |
| 183 | uint32_t hi = (3 * HI_PAIR(c00) + HI_PAIR(c10)) >> 2; |
| 184 | return COMBINE(lo, hi); |
| 185 | } |
agl@chromium.org | 55747cc | 2009-12-18 22:50:15 +0000 | [diff] [blame] | 186 | static uint32_t bilerptr11(const uint32_t* a00, const uint32_t* a01, const uint32_t* a10, const uint32_t* a11) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 187 | uint32_t c00 = *a00; |
| 188 | uint32_t c01 = *a01; |
| 189 | uint32_t c10 = *a10; |
| 190 | uint32_t c11 = *a11; |
| 191 | uint32_t lo = (9 * LO_PAIR(c00) + 3 * (LO_PAIR(c01) + LO_PAIR(c10)) + LO_PAIR(c11)) >> 4; |
| 192 | uint32_t hi = (9 * HI_PAIR(c00) + 3 * (HI_PAIR(c01) + HI_PAIR(c10)) + HI_PAIR(c11)) >> 4; |
| 193 | return COMBINE(lo, hi); |
| 194 | } |
agl@chromium.org | 55747cc | 2009-12-18 22:50:15 +0000 | [diff] [blame] | 195 | static uint32_t bilerptr12(const uint32_t* a00, const uint32_t* a01, const uint32_t* a10, const uint32_t* a11) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 196 | uint32_t c00 = *a00; |
| 197 | uint32_t c01 = *a01; |
| 198 | uint32_t c10 = *a10; |
| 199 | uint32_t c11 = *a11; |
| 200 | uint32_t lo = (3 * (LO_PAIR(c00) + LO_PAIR(c01)) + LO_PAIR(c10) + LO_PAIR(c11)) >> 3; |
| 201 | uint32_t hi = (3 * (HI_PAIR(c00) + HI_PAIR(c01)) + HI_PAIR(c10) + HI_PAIR(c11)) >> 3; |
| 202 | return COMBINE(lo, hi); |
| 203 | } |
agl@chromium.org | 55747cc | 2009-12-18 22:50:15 +0000 | [diff] [blame] | 204 | static uint32_t bilerptr13(const uint32_t* a00, const uint32_t* a01, const uint32_t* a10, const uint32_t* a11) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 205 | uint32_t c00 = *a00; |
| 206 | uint32_t c01 = *a01; |
| 207 | uint32_t c10 = *a10; |
| 208 | uint32_t c11 = *a11; |
| 209 | uint32_t lo = (9 * LO_PAIR(c01) + 3 * (LO_PAIR(c00) + LO_PAIR(c11)) + LO_PAIR(c10)) >> 4; |
| 210 | uint32_t hi = (9 * HI_PAIR(c01) + 3 * (HI_PAIR(c00) + HI_PAIR(c11)) + HI_PAIR(c10)) >> 4; |
| 211 | return COMBINE(lo, hi); |
| 212 | } |
| 213 | |
agl@chromium.org | 55747cc | 2009-12-18 22:50:15 +0000 | [diff] [blame] | 214 | static uint32_t bilerptr20(const uint32_t* a00, const uint32_t* a01, const uint32_t* a10, const uint32_t* a11) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 215 | uint32_t c00 = *a00; |
| 216 | uint32_t c10 = *a10; |
| 217 | uint32_t lo = (LO_PAIR(c00) + LO_PAIR(c10)) >> 1; |
| 218 | uint32_t hi = (HI_PAIR(c00) + HI_PAIR(c10)) >> 1; |
| 219 | return COMBINE(lo, hi); |
| 220 | } |
agl@chromium.org | 55747cc | 2009-12-18 22:50:15 +0000 | [diff] [blame] | 221 | static uint32_t bilerptr21(const uint32_t* a00, const uint32_t* a01, const uint32_t* a10, const uint32_t* a11) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 222 | uint32_t c00 = *a00; |
| 223 | uint32_t c01 = *a01; |
| 224 | uint32_t c10 = *a10; |
| 225 | uint32_t c11 = *a11; |
| 226 | uint32_t lo = (3 * (LO_PAIR(c00) + LO_PAIR(c10)) + LO_PAIR(c01) + LO_PAIR(c11)) >> 3; |
| 227 | uint32_t hi = (3 * (HI_PAIR(c00) + HI_PAIR(c10)) + HI_PAIR(c01) + HI_PAIR(c11)) >> 3; |
| 228 | return COMBINE(lo, hi); |
| 229 | } |
agl@chromium.org | 55747cc | 2009-12-18 22:50:15 +0000 | [diff] [blame] | 230 | static uint32_t bilerptr22(const uint32_t* a00, const uint32_t* a01, const uint32_t* a10, const uint32_t* a11) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 231 | uint32_t c00 = *a00; |
| 232 | uint32_t c01 = *a01; |
| 233 | uint32_t c10 = *a10; |
| 234 | uint32_t c11 = *a11; |
| 235 | uint32_t lo = (LO_PAIR(c00) + LO_PAIR(c01) + LO_PAIR(c10) + LO_PAIR(c11)) >> 2; |
| 236 | uint32_t hi = (HI_PAIR(c00) + HI_PAIR(c01) + HI_PAIR(c10) + HI_PAIR(c11)) >> 2; |
| 237 | return COMBINE(lo, hi); |
| 238 | } |
agl@chromium.org | 55747cc | 2009-12-18 22:50:15 +0000 | [diff] [blame] | 239 | static uint32_t bilerptr23(const uint32_t* a00, const uint32_t* a01, const uint32_t* a10, const uint32_t* a11) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 240 | uint32_t c00 = *a00; |
| 241 | uint32_t c01 = *a01; |
| 242 | uint32_t c10 = *a10; |
| 243 | uint32_t c11 = *a11; |
| 244 | uint32_t lo = (3 * (LO_PAIR(c01) + LO_PAIR(c11)) + LO_PAIR(c00) + LO_PAIR(c10)) >> 3; |
| 245 | uint32_t hi = (3 * (HI_PAIR(c01) + HI_PAIR(c11)) + HI_PAIR(c00) + HI_PAIR(c10)) >> 3; |
| 246 | return COMBINE(lo, hi); |
| 247 | } |
| 248 | |
agl@chromium.org | 55747cc | 2009-12-18 22:50:15 +0000 | [diff] [blame] | 249 | static uint32_t bilerptr30(const uint32_t* a00, const uint32_t* a01, const uint32_t* a10, const uint32_t* a11) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 250 | uint32_t c00 = *a00; |
| 251 | uint32_t c10 = *a10; |
| 252 | uint32_t lo = (LO_PAIR(c00) + 3 * LO_PAIR(c10)) >> 2; |
| 253 | uint32_t hi = (HI_PAIR(c00) + 3 * HI_PAIR(c10)) >> 2; |
| 254 | return COMBINE(lo, hi); |
| 255 | } |
agl@chromium.org | 55747cc | 2009-12-18 22:50:15 +0000 | [diff] [blame] | 256 | static uint32_t bilerptr31(const uint32_t* a00, const uint32_t* a01, const uint32_t* a10, const uint32_t* a11) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 257 | uint32_t c00 = *a00; |
| 258 | uint32_t c01 = *a01; |
| 259 | uint32_t c10 = *a10; |
| 260 | uint32_t c11 = *a11; |
| 261 | uint32_t lo = (9 * LO_PAIR(c10) + 3 * (LO_PAIR(c00) + LO_PAIR(c11)) + LO_PAIR(c01)) >> 4; |
| 262 | uint32_t hi = (9 * HI_PAIR(c10) + 3 * (HI_PAIR(c00) + HI_PAIR(c11)) + HI_PAIR(c01)) >> 4; |
| 263 | return COMBINE(lo, hi); |
| 264 | } |
agl@chromium.org | 55747cc | 2009-12-18 22:50:15 +0000 | [diff] [blame] | 265 | static uint32_t bilerptr32(const uint32_t* a00, const uint32_t* a01, const uint32_t* a10, const uint32_t* a11) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 266 | uint32_t c00 = *a00; |
| 267 | uint32_t c01 = *a01; |
| 268 | uint32_t c10 = *a10; |
| 269 | uint32_t c11 = *a11; |
| 270 | uint32_t lo = (3 * (LO_PAIR(c10) + LO_PAIR(c11)) + LO_PAIR(c00) + LO_PAIR(c01)) >> 3; |
| 271 | uint32_t hi = (3 * (HI_PAIR(c10) + HI_PAIR(c11)) + HI_PAIR(c00) + HI_PAIR(c01)) >> 3; |
| 272 | return COMBINE(lo, hi); |
| 273 | } |
agl@chromium.org | 55747cc | 2009-12-18 22:50:15 +0000 | [diff] [blame] | 274 | static uint32_t bilerptr33(const uint32_t* a00, const uint32_t* a01, const uint32_t* a10, const uint32_t* a11) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 275 | uint32_t c00 = *a00; |
| 276 | uint32_t c01 = *a01; |
| 277 | uint32_t c10 = *a10; |
| 278 | uint32_t c11 = *a11; |
| 279 | uint32_t lo = (9 * LO_PAIR(c11) + 3 * (LO_PAIR(c01) + LO_PAIR(c10)) + LO_PAIR(c00)) >> 4; |
| 280 | uint32_t hi = (9 * HI_PAIR(c11) + 3 * (HI_PAIR(c01) + HI_PAIR(c10)) + HI_PAIR(c00)) >> 4; |
| 281 | return COMBINE(lo, hi); |
| 282 | } |
| 283 | |
| 284 | static const SkFilterPtrProc gBilerpPtrProcs[4 * 4] = { |
| 285 | bilerptr00, bilerptr01, bilerptr02, bilerptr03, |
| 286 | bilerptr10, bilerptr11, bilerptr12, bilerptr13, |
| 287 | bilerptr20, bilerptr21, bilerptr22, bilerptr23, |
| 288 | bilerptr30, bilerptr31, bilerptr32, bilerptr33 |
| 289 | }; |
| 290 | |
| 291 | const SkFilterPtrProc* SkGetBilinearFilterPtrProcTable() |
| 292 | { |
| 293 | return gBilerpPtrProcs; |
| 294 | } |