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| 1 // Copyright 2014 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 // MIPS version of rescaling functions |
| 11 // |
| 12 // Author(s): Djordje Pesut (djordje.pesut@imgtec.com) |
| 13 |
| 14 #include "./dsp.h" |
| 15 |
| 16 #if defined(WEBP_USE_MIPS_DSP_R2) |
| 17 |
| 18 #include <assert.h> |
| 19 #include "../utils/rescaler.h" |
| 20 |
| 21 #define ROUNDER (WEBP_RESCALER_ONE >> 1) |
| 22 #define MULT_FIX(x, y) (((uint64_t)(x) * (y) + ROUNDER) >> WEBP_RESCALER_RFIX) |
| 23 |
| 24 //------------------------------------------------------------------------------ |
| 25 // Row export |
| 26 |
| 27 static void ExportRowShrink(WebPRescaler* const wrk) { |
| 28 int i; |
| 29 const int x_out_max = wrk->dst_width * wrk->num_channels; |
| 30 uint8_t* dst = wrk->dst; |
| 31 rescaler_t* irow = wrk->irow; |
| 32 const rescaler_t* frow = wrk->frow; |
| 33 const int yscale = wrk->fy_scale * (-wrk->y_accum); |
| 34 int temp0, temp1, temp2, temp3, temp4, temp5, loop_end; |
| 35 const int temp7 = (int)wrk->fxy_scale; |
| 36 const int temp6 = (x_out_max & ~0x3) << 2; |
| 37 assert(!WebPRescalerOutputDone(wrk)); |
| 38 assert(wrk->y_accum <= 0); |
| 39 assert(!wrk->y_expand); |
| 40 assert(wrk->fxy_scale != 0); |
| 41 if (yscale) { |
| 42 if (x_out_max >= 4) { |
| 43 int temp8, temp9, temp10, temp11; |
| 44 __asm__ volatile ( |
| 45 "li %[temp3], 0x10000 \n\t" |
| 46 "li %[temp4], 0x8000 \n\t" |
| 47 "addu %[loop_end], %[frow], %[temp6] \n\t" |
| 48 "1: \n\t" |
| 49 "lw %[temp0], 0(%[frow]) \n\t" |
| 50 "lw %[temp1], 4(%[frow]) \n\t" |
| 51 "lw %[temp2], 8(%[frow]) \n\t" |
| 52 "lw %[temp5], 12(%[frow]) \n\t" |
| 53 "mult $ac0, %[temp3], %[temp4] \n\t" |
| 54 "maddu $ac0, %[temp0], %[yscale] \n\t" |
| 55 "mult $ac1, %[temp3], %[temp4] \n\t" |
| 56 "maddu $ac1, %[temp1], %[yscale] \n\t" |
| 57 "mult $ac2, %[temp3], %[temp4] \n\t" |
| 58 "maddu $ac2, %[temp2], %[yscale] \n\t" |
| 59 "mult $ac3, %[temp3], %[temp4] \n\t" |
| 60 "maddu $ac3, %[temp5], %[yscale] \n\t" |
| 61 "addiu %[frow], %[frow], 16 \n\t" |
| 62 "mfhi %[temp0], $ac0 \n\t" |
| 63 "mfhi %[temp1], $ac1 \n\t" |
| 64 "mfhi %[temp2], $ac2 \n\t" |
| 65 "mfhi %[temp5], $ac3 \n\t" |
| 66 "lw %[temp8], 0(%[irow]) \n\t" |
| 67 "lw %[temp9], 4(%[irow]) \n\t" |
| 68 "lw %[temp10], 8(%[irow]) \n\t" |
| 69 "lw %[temp11], 12(%[irow]) \n\t" |
| 70 "addiu %[dst], %[dst], 4 \n\t" |
| 71 "addiu %[irow], %[irow], 16 \n\t" |
| 72 "subu %[temp8], %[temp8], %[temp0] \n\t" |
| 73 "subu %[temp9], %[temp9], %[temp1] \n\t" |
| 74 "subu %[temp10], %[temp10], %[temp2] \n\t" |
| 75 "subu %[temp11], %[temp11], %[temp5] \n\t" |
| 76 "mult $ac0, %[temp3], %[temp4] \n\t" |
| 77 "maddu $ac0, %[temp8], %[temp7] \n\t" |
| 78 "mult $ac1, %[temp3], %[temp4] \n\t" |
| 79 "maddu $ac1, %[temp9], %[temp7] \n\t" |
| 80 "mult $ac2, %[temp3], %[temp4] \n\t" |
| 81 "maddu $ac2, %[temp10], %[temp7] \n\t" |
| 82 "mult $ac3, %[temp3], %[temp4] \n\t" |
| 83 "maddu $ac3, %[temp11], %[temp7] \n\t" |
| 84 "mfhi %[temp8], $ac0 \n\t" |
| 85 "mfhi %[temp9], $ac1 \n\t" |
| 86 "mfhi %[temp10], $ac2 \n\t" |
| 87 "mfhi %[temp11], $ac3 \n\t" |
| 88 "sw %[temp0], -16(%[irow]) \n\t" |
| 89 "sw %[temp1], -12(%[irow]) \n\t" |
| 90 "sw %[temp2], -8(%[irow]) \n\t" |
| 91 "sw %[temp5], -4(%[irow]) \n\t" |
| 92 "sb %[temp8], -4(%[dst]) \n\t" |
| 93 "sb %[temp9], -3(%[dst]) \n\t" |
| 94 "sb %[temp10], -2(%[dst]) \n\t" |
| 95 "sb %[temp11], -1(%[dst]) \n\t" |
| 96 "bne %[frow], %[loop_end], 1b \n\t" |
| 97 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp3]"=&r"(temp3), |
| 98 [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [frow]"+r"(frow), |
| 99 [irow]"+r"(irow), [dst]"+r"(dst), [loop_end]"=&r"(loop_end), |
| 100 [temp8]"=&r"(temp8), [temp9]"=&r"(temp9), [temp10]"=&r"(temp10), |
| 101 [temp11]"=&r"(temp11), [temp2]"=&r"(temp2) |
| 102 : [temp7]"r"(temp7), [yscale]"r"(yscale), [temp6]"r"(temp6) |
| 103 : "memory", "hi", "lo", "$ac1hi", "$ac1lo", |
| 104 "$ac2hi", "$ac2lo", "$ac3hi", "$ac3lo" |
| 105 ); |
| 106 } |
| 107 for (i = 0; i < (x_out_max & 0x3); ++i) { |
| 108 const uint32_t frac = (uint32_t)MULT_FIX(*frow++, yscale); |
| 109 const int v = (int)MULT_FIX(*irow - frac, wrk->fxy_scale); |
| 110 assert(v >= 0 && v <= 255); |
| 111 *dst++ = v; |
| 112 *irow++ = frac; // new fractional start |
| 113 } |
| 114 } else { |
| 115 if (x_out_max >= 4) { |
| 116 __asm__ volatile ( |
| 117 "li %[temp3], 0x10000 \n\t" |
| 118 "li %[temp4], 0x8000 \n\t" |
| 119 "addu %[loop_end], %[irow], %[temp6] \n\t" |
| 120 "1: \n\t" |
| 121 "lw %[temp0], 0(%[irow]) \n\t" |
| 122 "lw %[temp1], 4(%[irow]) \n\t" |
| 123 "lw %[temp2], 8(%[irow]) \n\t" |
| 124 "lw %[temp5], 12(%[irow]) \n\t" |
| 125 "addiu %[dst], %[dst], 4 \n\t" |
| 126 "addiu %[irow], %[irow], 16 \n\t" |
| 127 "mult $ac0, %[temp3], %[temp4] \n\t" |
| 128 "maddu $ac0, %[temp0], %[temp7] \n\t" |
| 129 "mult $ac1, %[temp3], %[temp4] \n\t" |
| 130 "maddu $ac1, %[temp1], %[temp7] \n\t" |
| 131 "mult $ac2, %[temp3], %[temp4] \n\t" |
| 132 "maddu $ac2, %[temp2], %[temp7] \n\t" |
| 133 "mult $ac3, %[temp3], %[temp4] \n\t" |
| 134 "maddu $ac3, %[temp5], %[temp7] \n\t" |
| 135 "mfhi %[temp0], $ac0 \n\t" |
| 136 "mfhi %[temp1], $ac1 \n\t" |
| 137 "mfhi %[temp2], $ac2 \n\t" |
| 138 "mfhi %[temp5], $ac3 \n\t" |
| 139 "sw $zero, -16(%[irow]) \n\t" |
| 140 "sw $zero, -12(%[irow]) \n\t" |
| 141 "sw $zero, -8(%[irow]) \n\t" |
| 142 "sw $zero, -4(%[irow]) \n\t" |
| 143 "sb %[temp0], -4(%[dst]) \n\t" |
| 144 "sb %[temp1], -3(%[dst]) \n\t" |
| 145 "sb %[temp2], -2(%[dst]) \n\t" |
| 146 "sb %[temp5], -1(%[dst]) \n\t" |
| 147 "bne %[irow], %[loop_end], 1b \n\t" |
| 148 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp3]"=&r"(temp3), |
| 149 [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [irow]"+r"(irow), |
| 150 [dst]"+r"(dst), [loop_end]"=&r"(loop_end), [temp2]"=&r"(temp2) |
| 151 : [temp7]"r"(temp7), [temp6]"r"(temp6) |
| 152 : "memory", "hi", "lo", "$ac1hi", "$ac1lo", |
| 153 "$ac2hi", "$ac2lo", "$ac3hi", "$ac3lo" |
| 154 ); |
| 155 } |
| 156 for (i = 0; i < (x_out_max & 0x3); ++i) { |
| 157 const int v = (int)MULT_FIX(*irow, wrk->fxy_scale); |
| 158 assert(v >= 0 && v <= 255); |
| 159 *dst++ = v; |
| 160 *irow++ = 0; |
| 161 } |
| 162 } |
| 163 } |
| 164 |
| 165 static void ExportRowExpand(WebPRescaler* const wrk) { |
| 166 int i; |
| 167 uint8_t* dst = wrk->dst; |
| 168 rescaler_t* irow = wrk->irow; |
| 169 const int x_out_max = wrk->dst_width * wrk->num_channels; |
| 170 const rescaler_t* frow = wrk->frow; |
| 171 int temp0, temp1, temp2, temp3, temp4, temp5, loop_end; |
| 172 const int temp6 = (x_out_max & ~0x3) << 2; |
| 173 const int temp7 = (int)wrk->fy_scale; |
| 174 assert(!WebPRescalerOutputDone(wrk)); |
| 175 assert(wrk->y_accum <= 0); |
| 176 assert(wrk->y_expand); |
| 177 assert(wrk->y_sub != 0); |
| 178 if (wrk->y_accum == 0) { |
| 179 if (x_out_max >= 4) { |
| 180 __asm__ volatile ( |
| 181 "li %[temp4], 0x10000 \n\t" |
| 182 "li %[temp5], 0x8000 \n\t" |
| 183 "addu %[loop_end], %[frow], %[temp6] \n\t" |
| 184 "1: \n\t" |
| 185 "lw %[temp0], 0(%[frow]) \n\t" |
| 186 "lw %[temp1], 4(%[frow]) \n\t" |
| 187 "lw %[temp2], 8(%[frow]) \n\t" |
| 188 "lw %[temp3], 12(%[frow]) \n\t" |
| 189 "addiu %[dst], %[dst], 4 \n\t" |
| 190 "addiu %[frow], %[frow], 16 \n\t" |
| 191 "mult $ac0, %[temp4], %[temp5] \n\t" |
| 192 "maddu $ac0, %[temp0], %[temp7] \n\t" |
| 193 "mult $ac1, %[temp4], %[temp5] \n\t" |
| 194 "maddu $ac1, %[temp1], %[temp7] \n\t" |
| 195 "mult $ac2, %[temp4], %[temp5] \n\t" |
| 196 "maddu $ac2, %[temp2], %[temp7] \n\t" |
| 197 "mult $ac3, %[temp4], %[temp5] \n\t" |
| 198 "maddu $ac3, %[temp3], %[temp7] \n\t" |
| 199 "mfhi %[temp0], $ac0 \n\t" |
| 200 "mfhi %[temp1], $ac1 \n\t" |
| 201 "mfhi %[temp2], $ac2 \n\t" |
| 202 "mfhi %[temp3], $ac3 \n\t" |
| 203 "sb %[temp0], -4(%[dst]) \n\t" |
| 204 "sb %[temp1], -3(%[dst]) \n\t" |
| 205 "sb %[temp2], -2(%[dst]) \n\t" |
| 206 "sb %[temp3], -1(%[dst]) \n\t" |
| 207 "bne %[frow], %[loop_end], 1b \n\t" |
| 208 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp3]"=&r"(temp3), |
| 209 [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [frow]"+r"(frow), |
| 210 [dst]"+r"(dst), [loop_end]"=&r"(loop_end), [temp2]"=&r"(temp2) |
| 211 : [temp7]"r"(temp7), [temp6]"r"(temp6) |
| 212 : "memory", "hi", "lo", "$ac1hi", "$ac1lo", |
| 213 "$ac2hi", "$ac2lo", "$ac3hi", "$ac3lo" |
| 214 ); |
| 215 } |
| 216 for (i = 0; i < (x_out_max & 0x3); ++i) { |
| 217 const uint32_t J = *frow++; |
| 218 const int v = (int)MULT_FIX(J, wrk->fy_scale); |
| 219 assert(v >= 0 && v <= 255); |
| 220 *dst++ = v; |
| 221 } |
| 222 } else { |
| 223 const uint32_t B = WEBP_RESCALER_FRAC(-wrk->y_accum, wrk->y_sub); |
| 224 const uint32_t A = (uint32_t)(WEBP_RESCALER_ONE - B); |
| 225 if (x_out_max >= 4) { |
| 226 int temp8, temp9, temp10, temp11; |
| 227 __asm__ volatile ( |
| 228 "li %[temp8], 0x10000 \n\t" |
| 229 "li %[temp9], 0x8000 \n\t" |
| 230 "addu %[loop_end], %[frow], %[temp6] \n\t" |
| 231 "1: \n\t" |
| 232 "lw %[temp0], 0(%[frow]) \n\t" |
| 233 "lw %[temp1], 4(%[frow]) \n\t" |
| 234 "lw %[temp2], 8(%[frow]) \n\t" |
| 235 "lw %[temp3], 12(%[frow]) \n\t" |
| 236 "lw %[temp4], 0(%[irow]) \n\t" |
| 237 "lw %[temp5], 4(%[irow]) \n\t" |
| 238 "lw %[temp10], 8(%[irow]) \n\t" |
| 239 "lw %[temp11], 12(%[irow]) \n\t" |
| 240 "addiu %[dst], %[dst], 4 \n\t" |
| 241 "mult $ac0, %[temp8], %[temp9] \n\t" |
| 242 "maddu $ac0, %[A], %[temp0] \n\t" |
| 243 "maddu $ac0, %[B], %[temp4] \n\t" |
| 244 "mult $ac1, %[temp8], %[temp9] \n\t" |
| 245 "maddu $ac1, %[A], %[temp1] \n\t" |
| 246 "maddu $ac1, %[B], %[temp5] \n\t" |
| 247 "mult $ac2, %[temp8], %[temp9] \n\t" |
| 248 "maddu $ac2, %[A], %[temp2] \n\t" |
| 249 "maddu $ac2, %[B], %[temp10] \n\t" |
| 250 "mult $ac3, %[temp8], %[temp9] \n\t" |
| 251 "maddu $ac3, %[A], %[temp3] \n\t" |
| 252 "maddu $ac3, %[B], %[temp11] \n\t" |
| 253 "addiu %[frow], %[frow], 16 \n\t" |
| 254 "addiu %[irow], %[irow], 16 \n\t" |
| 255 "mfhi %[temp0], $ac0 \n\t" |
| 256 "mfhi %[temp1], $ac1 \n\t" |
| 257 "mfhi %[temp2], $ac2 \n\t" |
| 258 "mfhi %[temp3], $ac3 \n\t" |
| 259 "mult $ac0, %[temp8], %[temp9] \n\t" |
| 260 "maddu $ac0, %[temp0], %[temp7] \n\t" |
| 261 "mult $ac1, %[temp8], %[temp9] \n\t" |
| 262 "maddu $ac1, %[temp1], %[temp7] \n\t" |
| 263 "mult $ac2, %[temp8], %[temp9] \n\t" |
| 264 "maddu $ac2, %[temp2], %[temp7] \n\t" |
| 265 "mult $ac3, %[temp8], %[temp9] \n\t" |
| 266 "maddu $ac3, %[temp3], %[temp7] \n\t" |
| 267 "mfhi %[temp0], $ac0 \n\t" |
| 268 "mfhi %[temp1], $ac1 \n\t" |
| 269 "mfhi %[temp2], $ac2 \n\t" |
| 270 "mfhi %[temp3], $ac3 \n\t" |
| 271 "sb %[temp0], -4(%[dst]) \n\t" |
| 272 "sb %[temp1], -3(%[dst]) \n\t" |
| 273 "sb %[temp2], -2(%[dst]) \n\t" |
| 274 "sb %[temp3], -1(%[dst]) \n\t" |
| 275 "bne %[frow], %[loop_end], 1b \n\t" |
| 276 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp3]"=&r"(temp3), |
| 277 [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [frow]"+r"(frow), |
| 278 [irow]"+r"(irow), [dst]"+r"(dst), [loop_end]"=&r"(loop_end), |
| 279 [temp8]"=&r"(temp8), [temp9]"=&r"(temp9), [temp10]"=&r"(temp10), |
| 280 [temp11]"=&r"(temp11), [temp2]"=&r"(temp2) |
| 281 : [temp7]"r"(temp7), [temp6]"r"(temp6), [A]"r"(A), [B]"r"(B) |
| 282 : "memory", "hi", "lo", "$ac1hi", "$ac1lo", |
| 283 "$ac2hi", "$ac2lo", "$ac3hi", "$ac3lo" |
| 284 ); |
| 285 } |
| 286 for (i = 0; i < (x_out_max & 0x3); ++i) { |
| 287 const uint64_t I = (uint64_t)A * *frow++ |
| 288 + (uint64_t)B * *irow++; |
| 289 const uint32_t J = (uint32_t)((I + ROUNDER) >> WEBP_RESCALER_RFIX); |
| 290 const int v = (int)MULT_FIX(J, wrk->fy_scale); |
| 291 assert(v >= 0 && v <= 255); |
| 292 *dst++ = v; |
| 293 } |
| 294 } |
| 295 } |
| 296 |
| 297 #undef MULT_FIX |
| 298 #undef ROUNDER |
| 299 |
| 300 //------------------------------------------------------------------------------ |
| 301 // Entry point |
| 302 |
| 303 extern void WebPRescalerDspInitMIPSdspR2(void); |
| 304 |
| 305 WEBP_TSAN_IGNORE_FUNCTION void WebPRescalerDspInitMIPSdspR2(void) { |
| 306 WebPRescalerExportRowExpand = ExportRowExpand; |
| 307 WebPRescalerExportRowShrink = ExportRowShrink; |
| 308 } |
| 309 |
| 310 #else // !WEBP_USE_MIPS_DSP_R2 |
| 311 |
| 312 WEBP_DSP_INIT_STUB(WebPRescalerDspInitMIPSdspR2) |
| 313 |
| 314 #endif // WEBP_USE_MIPS_DSP_R2 |
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Issue 1546003002:
libwebp: update to 0.5.0 (Closed)
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