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 (at) imgtec.com) 13 14 #include "src/dsp/dsp.h" 15 16 #if defined(WEBP_USE_MIPS_DSP_R2) && !defined(WEBP_REDUCE_SIZE) 17 18 #include <assert.h> 19 #include "src/utils/rescaler_utils.h" 20 21 #define ROUNDER (WEBP_RESCALER_ONE >> 1) 22 #define MULT_FIX(x, y) (((uint64_t)(x) * (y) + ROUNDER) >> WEBP_RESCALER_RFIX) 23 #define MULT_FIX_FLOOR(x, y) (((uint64_t)(x) * (y)) >> WEBP_RESCALER_RFIX) 24 25 //------------------------------------------------------------------------------ 26 // Row export 27 28 #if 0 // disabled for now. TODO(skal): make match the C-code 29 static void ExportRowShrink_MIPSdspR2(WebPRescaler* const wrk) { 30 int i; 31 const int x_out_max = wrk->dst_width * wrk->num_channels; 32 uint8_t* dst = wrk->dst; 33 rescaler_t* irow = wrk->irow; 34 const rescaler_t* frow = wrk->frow; 35 const int yscale = wrk->fy_scale * (-wrk->y_accum); 36 int temp0, temp1, temp2, temp3, temp4, temp5, loop_end; 37 const int temp7 = (int)wrk->fxy_scale; 38 const int temp6 = (x_out_max & ~0x3) << 2; 39 assert(!WebPRescalerOutputDone(wrk)); 40 assert(wrk->y_accum <= 0); 41 assert(!wrk->y_expand); 42 assert(wrk->fxy_scale != 0); 43 if (yscale) { 44 if (x_out_max >= 4) { 45 int temp8, temp9, temp10, temp11; 46 __asm__ volatile ( 47 "li %[temp3], 0x10000 \n\t" 48 "li %[temp4], 0x8000 \n\t" 49 "addu %[loop_end], %[frow], %[temp6] \n\t" 50 "1: \n\t" 51 "lw %[temp0], 0(%[frow]) \n\t" 52 "lw %[temp1], 4(%[frow]) \n\t" 53 "lw %[temp2], 8(%[frow]) \n\t" 54 "lw %[temp5], 12(%[frow]) \n\t" 55 "mult $ac0, %[temp3], %[temp4] \n\t" 56 "maddu $ac0, %[temp0], %[yscale] \n\t" 57 "mult $ac1, %[temp3], %[temp4] \n\t" 58 "maddu $ac1, %[temp1], %[yscale] \n\t" 59 "mult $ac2, %[temp3], %[temp4] \n\t" 60 "maddu $ac2, %[temp2], %[yscale] \n\t" 61 "mult $ac3, %[temp3], %[temp4] \n\t" 62 "maddu $ac3, %[temp5], %[yscale] \n\t" 63 "addiu %[frow], %[frow], 16 \n\t" 64 "mfhi %[temp0], $ac0 \n\t" 65 "mfhi %[temp1], $ac1 \n\t" 66 "mfhi %[temp2], $ac2 \n\t" 67 "mfhi %[temp5], $ac3 \n\t" 68 "lw %[temp8], 0(%[irow]) \n\t" 69 "lw %[temp9], 4(%[irow]) \n\t" 70 "lw %[temp10], 8(%[irow]) \n\t" 71 "lw %[temp11], 12(%[irow]) \n\t" 72 "addiu %[dst], %[dst], 4 \n\t" 73 "addiu %[irow], %[irow], 16 \n\t" 74 "subu %[temp8], %[temp8], %[temp0] \n\t" 75 "subu %[temp9], %[temp9], %[temp1] \n\t" 76 "subu %[temp10], %[temp10], %[temp2] \n\t" 77 "subu %[temp11], %[temp11], %[temp5] \n\t" 78 "mult $ac0, %[temp3], %[temp4] \n\t" 79 "maddu $ac0, %[temp8], %[temp7] \n\t" 80 "mult $ac1, %[temp3], %[temp4] \n\t" 81 "maddu $ac1, %[temp9], %[temp7] \n\t" 82 "mult $ac2, %[temp3], %[temp4] \n\t" 83 "maddu $ac2, %[temp10], %[temp7] \n\t" 84 "mult $ac3, %[temp3], %[temp4] \n\t" 85 "maddu $ac3, %[temp11], %[temp7] \n\t" 86 "mfhi %[temp8], $ac0 \n\t" 87 "mfhi %[temp9], $ac1 \n\t" 88 "mfhi %[temp10], $ac2 \n\t" 89 "mfhi %[temp11], $ac3 \n\t" 90 "sw %[temp0], -16(%[irow]) \n\t" 91 "sw %[temp1], -12(%[irow]) \n\t" 92 "sw %[temp2], -8(%[irow]) \n\t" 93 "sw %[temp5], -4(%[irow]) \n\t" 94 "sb %[temp8], -4(%[dst]) \n\t" 95 "sb %[temp9], -3(%[dst]) \n\t" 96 "sb %[temp10], -2(%[dst]) \n\t" 97 "sb %[temp11], -1(%[dst]) \n\t" 98 "bne %[frow], %[loop_end], 1b \n\t" 99 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp3]"=&r"(temp3), 100 [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [frow]"+r"(frow), 101 [irow]"+r"(irow), [dst]"+r"(dst), [loop_end]"=&r"(loop_end), 102 [temp8]"=&r"(temp8), [temp9]"=&r"(temp9), [temp10]"=&r"(temp10), 103 [temp11]"=&r"(temp11), [temp2]"=&r"(temp2) 104 : [temp7]"r"(temp7), [yscale]"r"(yscale), [temp6]"r"(temp6) 105 : "memory", "hi", "lo", "$ac1hi", "$ac1lo", 106 "$ac2hi", "$ac2lo", "$ac3hi", "$ac3lo" 107 ); 108 } 109 for (i = 0; i < (x_out_max & 0x3); ++i) { 110 const uint32_t frac = (uint32_t)MULT_FIX_FLOOR(*frow++, yscale); 111 const int v = (int)MULT_FIX(*irow - frac, wrk->fxy_scale); 112 *dst++ = (v > 255) ? 255u : (uint8_t)v; 113 *irow++ = frac; // new fractional start 114 } 115 } else { 116 if (x_out_max >= 4) { 117 __asm__ volatile ( 118 "li %[temp3], 0x10000 \n\t" 119 "li %[temp4], 0x8000 \n\t" 120 "addu %[loop_end], %[irow], %[temp6] \n\t" 121 "1: \n\t" 122 "lw %[temp0], 0(%[irow]) \n\t" 123 "lw %[temp1], 4(%[irow]) \n\t" 124 "lw %[temp2], 8(%[irow]) \n\t" 125 "lw %[temp5], 12(%[irow]) \n\t" 126 "addiu %[dst], %[dst], 4 \n\t" 127 "addiu %[irow], %[irow], 16 \n\t" 128 "mult $ac0, %[temp3], %[temp4] \n\t" 129 "maddu $ac0, %[temp0], %[temp7] \n\t" 130 "mult $ac1, %[temp3], %[temp4] \n\t" 131 "maddu $ac1, %[temp1], %[temp7] \n\t" 132 "mult $ac2, %[temp3], %[temp4] \n\t" 133 "maddu $ac2, %[temp2], %[temp7] \n\t" 134 "mult $ac3, %[temp3], %[temp4] \n\t" 135 "maddu $ac3, %[temp5], %[temp7] \n\t" 136 "mfhi %[temp0], $ac0 \n\t" 137 "mfhi %[temp1], $ac1 \n\t" 138 "mfhi %[temp2], $ac2 \n\t" 139 "mfhi %[temp5], $ac3 \n\t" 140 "sw $zero, -16(%[irow]) \n\t" 141 "sw $zero, -12(%[irow]) \n\t" 142 "sw $zero, -8(%[irow]) \n\t" 143 "sw $zero, -4(%[irow]) \n\t" 144 "sb %[temp0], -4(%[dst]) \n\t" 145 "sb %[temp1], -3(%[dst]) \n\t" 146 "sb %[temp2], -2(%[dst]) \n\t" 147 "sb %[temp5], -1(%[dst]) \n\t" 148 "bne %[irow], %[loop_end], 1b \n\t" 149 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp3]"=&r"(temp3), 150 [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [irow]"+r"(irow), 151 [dst]"+r"(dst), [loop_end]"=&r"(loop_end), [temp2]"=&r"(temp2) 152 : [temp7]"r"(temp7), [temp6]"r"(temp6) 153 : "memory", "hi", "lo", "$ac1hi", "$ac1lo", 154 "$ac2hi", "$ac2lo", "$ac3hi", "$ac3lo" 155 ); 156 } 157 for (i = 0; i < (x_out_max & 0x3); ++i) { 158 const int v = (int)MULT_FIX_FLOOR(*irow, wrk->fxy_scale); 159 *dst++ = (v > 255) ? 255u : (uint8_t)v; 160 *irow++ = 0; 161 } 162 } 163 } 164 #endif // 0 165 166 static void ExportRowExpand_MIPSdspR2(WebPRescaler* const wrk) { 167 int i; 168 uint8_t* dst = wrk->dst; 169 rescaler_t* irow = wrk->irow; 170 const int x_out_max = wrk->dst_width * wrk->num_channels; 171 const rescaler_t* frow = wrk->frow; 172 int temp0, temp1, temp2, temp3, temp4, temp5, loop_end; 173 const int temp6 = (x_out_max & ~0x3) << 2; 174 const int temp7 = (int)wrk->fy_scale; 175 assert(!WebPRescalerOutputDone(wrk)); 176 assert(wrk->y_accum <= 0); 177 assert(wrk->y_expand); 178 assert(wrk->y_sub != 0); 179 if (wrk->y_accum == 0) { 180 if (x_out_max >= 4) { 181 __asm__ volatile ( 182 "li %[temp4], 0x10000 \n\t" 183 "li %[temp5], 0x8000 \n\t" 184 "addu %[loop_end], %[frow], %[temp6] \n\t" 185 "1: \n\t" 186 "lw %[temp0], 0(%[frow]) \n\t" 187 "lw %[temp1], 4(%[frow]) \n\t" 188 "lw %[temp2], 8(%[frow]) \n\t" 189 "lw %[temp3], 12(%[frow]) \n\t" 190 "addiu %[dst], %[dst], 4 \n\t" 191 "addiu %[frow], %[frow], 16 \n\t" 192 "mult $ac0, %[temp4], %[temp5] \n\t" 193 "maddu $ac0, %[temp0], %[temp7] \n\t" 194 "mult $ac1, %[temp4], %[temp5] \n\t" 195 "maddu $ac1, %[temp1], %[temp7] \n\t" 196 "mult $ac2, %[temp4], %[temp5] \n\t" 197 "maddu $ac2, %[temp2], %[temp7] \n\t" 198 "mult $ac3, %[temp4], %[temp5] \n\t" 199 "maddu $ac3, %[temp3], %[temp7] \n\t" 200 "mfhi %[temp0], $ac0 \n\t" 201 "mfhi %[temp1], $ac1 \n\t" 202 "mfhi %[temp2], $ac2 \n\t" 203 "mfhi %[temp3], $ac3 \n\t" 204 "sb %[temp0], -4(%[dst]) \n\t" 205 "sb %[temp1], -3(%[dst]) \n\t" 206 "sb %[temp2], -2(%[dst]) \n\t" 207 "sb %[temp3], -1(%[dst]) \n\t" 208 "bne %[frow], %[loop_end], 1b \n\t" 209 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp3]"=&r"(temp3), 210 [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [frow]"+r"(frow), 211 [dst]"+r"(dst), [loop_end]"=&r"(loop_end), [temp2]"=&r"(temp2) 212 : [temp7]"r"(temp7), [temp6]"r"(temp6) 213 : "memory", "hi", "lo", "$ac1hi", "$ac1lo", 214 "$ac2hi", "$ac2lo", "$ac3hi", "$ac3lo" 215 ); 216 } 217 for (i = 0; i < (x_out_max & 0x3); ++i) { 218 const uint32_t J = *frow++; 219 const int v = (int)MULT_FIX(J, wrk->fy_scale); 220 *dst++ = (v > 255) ? 255u : (uint8_t)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 *dst++ = (v > 255) ? 255u : (uint8_t)v; 292 } 293 } 294 } 295 296 #undef MULT_FIX_FLOOR 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_MIPSdspR2; 307 // WebPRescalerExportRowShrink = ExportRowShrink_MIPSdspR2; 308 } 309 310 #else // !WEBP_USE_MIPS_DSP_R2 311 312 WEBP_DSP_INIT_STUB(WebPRescalerDspInitMIPSdspR2) 313 314 #endif // WEBP_USE_MIPS_DSP_R2 315
