enc_mips32.c revision af51b94a435132e9014c324e25fb686b3d07a8c8
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 speed-critical encoding functions. 11// 12// Author(s): Djordje Pesut (djordje.pesut@imgtec.com) 13// Jovan Zelincevic (jovan.zelincevic@imgtec.com) 14// Slobodan Prijic (slobodan.prijic@imgtec.com) 15 16#include "./dsp.h" 17 18#if defined(WEBP_USE_MIPS32) 19 20#include "../enc/vp8enci.h" 21#include "../enc/cost.h" 22 23#if defined(__GNUC__) && defined(__ANDROID__) && LOCAL_GCC_VERSION == 0x409 24#define WORK_AROUND_GCC 25#endif 26 27static const int kC1 = 20091 + (1 << 16); 28static const int kC2 = 35468; 29 30// macro for one vertical pass in ITransformOne 31// MUL macro inlined 32// temp0..temp15 holds tmp[0]..tmp[15] 33// A..D - offsets in bytes to load from in buffer 34// TEMP0..TEMP3 - registers for corresponding tmp elements 35// TEMP4..TEMP5 - temporary registers 36#define VERTICAL_PASS(A, B, C, D, TEMP4, TEMP0, TEMP1, TEMP2, TEMP3) \ 37 "lh %[temp16], "#A"(%[temp20]) \n\t" \ 38 "lh %[temp18], "#B"(%[temp20]) \n\t" \ 39 "lh %[temp17], "#C"(%[temp20]) \n\t" \ 40 "lh %[temp19], "#D"(%[temp20]) \n\t" \ 41 "addu %["#TEMP4"], %[temp16], %[temp18] \n\t" \ 42 "subu %[temp16], %[temp16], %[temp18] \n\t" \ 43 "mul %["#TEMP0"], %[temp17], %[kC2] \n\t" \ 44 "mul %[temp18], %[temp19], %[kC1] \n\t" \ 45 "mul %[temp17], %[temp17], %[kC1] \n\t" \ 46 "mul %[temp19], %[temp19], %[kC2] \n\t" \ 47 "sra %["#TEMP0"], %["#TEMP0"], 16 \n\n" \ 48 "sra %[temp18], %[temp18], 16 \n\n" \ 49 "sra %[temp17], %[temp17], 16 \n\n" \ 50 "sra %[temp19], %[temp19], 16 \n\n" \ 51 "subu %["#TEMP2"], %["#TEMP0"], %[temp18] \n\t" \ 52 "addu %["#TEMP3"], %[temp17], %[temp19] \n\t" \ 53 "addu %["#TEMP0"], %["#TEMP4"], %["#TEMP3"] \n\t" \ 54 "addu %["#TEMP1"], %[temp16], %["#TEMP2"] \n\t" \ 55 "subu %["#TEMP2"], %[temp16], %["#TEMP2"] \n\t" \ 56 "subu %["#TEMP3"], %["#TEMP4"], %["#TEMP3"] \n\t" 57 58// macro for one horizontal pass in ITransformOne 59// MUL and STORE macros inlined 60// a = clip_8b(a) is replaced with: a = max(a, 0); a = min(a, 255) 61// temp0..temp15 holds tmp[0]..tmp[15] 62// A..D - offsets in bytes to load from ref and store to dst buffer 63// TEMP0, TEMP4, TEMP8 and TEMP12 - registers for corresponding tmp elements 64#define HORIZONTAL_PASS(A, B, C, D, TEMP0, TEMP4, TEMP8, TEMP12) \ 65 "addiu %["#TEMP0"], %["#TEMP0"], 4 \n\t" \ 66 "addu %[temp16], %["#TEMP0"], %["#TEMP8"] \n\t" \ 67 "subu %[temp17], %["#TEMP0"], %["#TEMP8"] \n\t" \ 68 "mul %["#TEMP0"], %["#TEMP4"], %[kC2] \n\t" \ 69 "mul %["#TEMP8"], %["#TEMP12"], %[kC1] \n\t" \ 70 "mul %["#TEMP4"], %["#TEMP4"], %[kC1] \n\t" \ 71 "mul %["#TEMP12"], %["#TEMP12"], %[kC2] \n\t" \ 72 "sra %["#TEMP0"], %["#TEMP0"], 16 \n\t" \ 73 "sra %["#TEMP8"], %["#TEMP8"], 16 \n\t" \ 74 "sra %["#TEMP4"], %["#TEMP4"], 16 \n\t" \ 75 "sra %["#TEMP12"], %["#TEMP12"], 16 \n\t" \ 76 "subu %[temp18], %["#TEMP0"], %["#TEMP8"] \n\t" \ 77 "addu %[temp19], %["#TEMP4"], %["#TEMP12"] \n\t" \ 78 "addu %["#TEMP0"], %[temp16], %[temp19] \n\t" \ 79 "addu %["#TEMP4"], %[temp17], %[temp18] \n\t" \ 80 "subu %["#TEMP8"], %[temp17], %[temp18] \n\t" \ 81 "subu %["#TEMP12"], %[temp16], %[temp19] \n\t" \ 82 "lw %[temp20], 0(%[args]) \n\t" \ 83 "sra %["#TEMP0"], %["#TEMP0"], 3 \n\t" \ 84 "sra %["#TEMP4"], %["#TEMP4"], 3 \n\t" \ 85 "sra %["#TEMP8"], %["#TEMP8"], 3 \n\t" \ 86 "sra %["#TEMP12"], %["#TEMP12"], 3 \n\t" \ 87 "lbu %[temp16], "#A"(%[temp20]) \n\t" \ 88 "lbu %[temp17], "#B"(%[temp20]) \n\t" \ 89 "lbu %[temp18], "#C"(%[temp20]) \n\t" \ 90 "lbu %[temp19], "#D"(%[temp20]) \n\t" \ 91 "addu %["#TEMP0"], %[temp16], %["#TEMP0"] \n\t" \ 92 "addu %["#TEMP4"], %[temp17], %["#TEMP4"] \n\t" \ 93 "addu %["#TEMP8"], %[temp18], %["#TEMP8"] \n\t" \ 94 "addu %["#TEMP12"], %[temp19], %["#TEMP12"] \n\t" \ 95 "slt %[temp16], %["#TEMP0"], $zero \n\t" \ 96 "slt %[temp17], %["#TEMP4"], $zero \n\t" \ 97 "slt %[temp18], %["#TEMP8"], $zero \n\t" \ 98 "slt %[temp19], %["#TEMP12"], $zero \n\t" \ 99 "movn %["#TEMP0"], $zero, %[temp16] \n\t" \ 100 "movn %["#TEMP4"], $zero, %[temp17] \n\t" \ 101 "movn %["#TEMP8"], $zero, %[temp18] \n\t" \ 102 "movn %["#TEMP12"], $zero, %[temp19] \n\t" \ 103 "addiu %[temp20], $zero, 255 \n\t" \ 104 "slt %[temp16], %["#TEMP0"], %[temp20] \n\t" \ 105 "slt %[temp17], %["#TEMP4"], %[temp20] \n\t" \ 106 "slt %[temp18], %["#TEMP8"], %[temp20] \n\t" \ 107 "slt %[temp19], %["#TEMP12"], %[temp20] \n\t" \ 108 "movz %["#TEMP0"], %[temp20], %[temp16] \n\t" \ 109 "movz %["#TEMP4"], %[temp20], %[temp17] \n\t" \ 110 "lw %[temp16], 8(%[args]) \n\t" \ 111 "movz %["#TEMP8"], %[temp20], %[temp18] \n\t" \ 112 "movz %["#TEMP12"], %[temp20], %[temp19] \n\t" \ 113 "sb %["#TEMP0"], "#A"(%[temp16]) \n\t" \ 114 "sb %["#TEMP4"], "#B"(%[temp16]) \n\t" \ 115 "sb %["#TEMP8"], "#C"(%[temp16]) \n\t" \ 116 "sb %["#TEMP12"], "#D"(%[temp16]) \n\t" 117 118// Does one or two inverse transforms. 119static WEBP_INLINE void ITransformOne(const uint8_t* ref, const int16_t* in, 120 uint8_t* dst) { 121 int temp0, temp1, temp2, temp3, temp4, temp5, temp6; 122 int temp7, temp8, temp9, temp10, temp11, temp12, temp13; 123 int temp14, temp15, temp16, temp17, temp18, temp19, temp20; 124 const int* args[3] = {(const int*)ref, (const int*)in, (const int*)dst}; 125 126 __asm__ volatile( 127 "lw %[temp20], 4(%[args]) \n\t" 128 VERTICAL_PASS(0, 16, 8, 24, temp4, temp0, temp1, temp2, temp3) 129 VERTICAL_PASS(2, 18, 10, 26, temp8, temp4, temp5, temp6, temp7) 130 VERTICAL_PASS(4, 20, 12, 28, temp12, temp8, temp9, temp10, temp11) 131 VERTICAL_PASS(6, 22, 14, 30, temp20, temp12, temp13, temp14, temp15) 132 133 HORIZONTAL_PASS( 0, 1, 2, 3, temp0, temp4, temp8, temp12) 134 HORIZONTAL_PASS(16, 17, 18, 19, temp1, temp5, temp9, temp13) 135 HORIZONTAL_PASS(32, 33, 34, 35, temp2, temp6, temp10, temp14) 136 HORIZONTAL_PASS(48, 49, 50, 51, temp3, temp7, temp11, temp15) 137 138 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2), 139 [temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), 140 [temp6]"=&r"(temp6), [temp7]"=&r"(temp7), [temp8]"=&r"(temp8), 141 [temp9]"=&r"(temp9), [temp10]"=&r"(temp10), [temp11]"=&r"(temp11), 142 [temp12]"=&r"(temp12), [temp13]"=&r"(temp13), [temp14]"=&r"(temp14), 143 [temp15]"=&r"(temp15), [temp16]"=&r"(temp16), [temp17]"=&r"(temp17), 144 [temp18]"=&r"(temp18), [temp19]"=&r"(temp19), [temp20]"=&r"(temp20) 145 : [args]"r"(args), [kC1]"r"(kC1), [kC2]"r"(kC2) 146 : "memory", "hi", "lo" 147 ); 148} 149 150static void ITransform(const uint8_t* ref, const int16_t* in, 151 uint8_t* dst, int do_two) { 152 ITransformOne(ref, in, dst); 153 if (do_two) { 154 ITransformOne(ref + 4, in + 16, dst + 4); 155 } 156} 157 158#undef VERTICAL_PASS 159#undef HORIZONTAL_PASS 160 161// macro for one pass through for loop in QuantizeBlock 162// QUANTDIV macro inlined 163// J - offset in bytes (kZigzag[n] * 2) 164// K - offset in bytes (kZigzag[n] * 4) 165// N - offset in bytes (n * 2) 166#define QUANTIZE_ONE(J, K, N) \ 167 "lh %[temp0], "#J"(%[ppin]) \n\t" \ 168 "lhu %[temp1], "#J"(%[ppsharpen]) \n\t" \ 169 "lw %[temp2], "#K"(%[ppzthresh]) \n\t" \ 170 "sra %[sign], %[temp0], 15 \n\t" \ 171 "xor %[coeff], %[temp0], %[sign] \n\t" \ 172 "subu %[coeff], %[coeff], %[sign] \n\t" \ 173 "addu %[coeff], %[coeff], %[temp1] \n\t" \ 174 "slt %[temp4], %[temp2], %[coeff] \n\t" \ 175 "addiu %[temp5], $zero, 0 \n\t" \ 176 "addiu %[level], $zero, 0 \n\t" \ 177 "beqz %[temp4], 2f \n\t" \ 178 "lhu %[temp1], "#J"(%[ppiq]) \n\t" \ 179 "lw %[temp2], "#K"(%[ppbias]) \n\t" \ 180 "lhu %[temp3], "#J"(%[ppq]) \n\t" \ 181 "mul %[level], %[coeff], %[temp1] \n\t" \ 182 "addu %[level], %[level], %[temp2] \n\t" \ 183 "sra %[level], %[level], 17 \n\t" \ 184 "slt %[temp4], %[max_level], %[level] \n\t" \ 185 "movn %[level], %[max_level], %[temp4] \n\t" \ 186 "xor %[level], %[level], %[sign] \n\t" \ 187 "subu %[level], %[level], %[sign] \n\t" \ 188 "mul %[temp5], %[level], %[temp3] \n\t" \ 189"2: \n\t" \ 190 "sh %[temp5], "#J"(%[ppin]) \n\t" \ 191 "sh %[level], "#N"(%[pout]) \n\t" 192 193static int QuantizeBlock(int16_t in[16], int16_t out[16], 194 const VP8Matrix* const mtx) { 195 int temp0, temp1, temp2, temp3, temp4, temp5; 196 int sign, coeff, level, i; 197 int max_level = MAX_LEVEL; 198 199 int16_t* ppin = &in[0]; 200 int16_t* pout = &out[0]; 201 const uint16_t* ppsharpen = &mtx->sharpen_[0]; 202 const uint32_t* ppzthresh = &mtx->zthresh_[0]; 203 const uint16_t* ppq = &mtx->q_[0]; 204 const uint16_t* ppiq = &mtx->iq_[0]; 205 const uint32_t* ppbias = &mtx->bias_[0]; 206 207 __asm__ volatile( 208 QUANTIZE_ONE( 0, 0, 0) 209 QUANTIZE_ONE( 2, 4, 2) 210 QUANTIZE_ONE( 8, 16, 4) 211 QUANTIZE_ONE(16, 32, 6) 212 QUANTIZE_ONE(10, 20, 8) 213 QUANTIZE_ONE( 4, 8, 10) 214 QUANTIZE_ONE( 6, 12, 12) 215 QUANTIZE_ONE(12, 24, 14) 216 QUANTIZE_ONE(18, 36, 16) 217 QUANTIZE_ONE(24, 48, 18) 218 QUANTIZE_ONE(26, 52, 20) 219 QUANTIZE_ONE(20, 40, 22) 220 QUANTIZE_ONE(14, 28, 24) 221 QUANTIZE_ONE(22, 44, 26) 222 QUANTIZE_ONE(28, 56, 28) 223 QUANTIZE_ONE(30, 60, 30) 224 225 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), 226 [temp2]"=&r"(temp2), [temp3]"=&r"(temp3), 227 [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), 228 [sign]"=&r"(sign), [coeff]"=&r"(coeff), 229 [level]"=&r"(level) 230 : [pout]"r"(pout), [ppin]"r"(ppin), 231 [ppiq]"r"(ppiq), [max_level]"r"(max_level), 232 [ppbias]"r"(ppbias), [ppzthresh]"r"(ppzthresh), 233 [ppsharpen]"r"(ppsharpen), [ppq]"r"(ppq) 234 : "memory", "hi", "lo" 235 ); 236 237 // moved out from macro to increase possibility for earlier breaking 238 for (i = 15; i >= 0; i--) { 239 if (out[i]) return 1; 240 } 241 return 0; 242} 243 244#undef QUANTIZE_ONE 245 246// macro for one horizontal pass in Disto4x4 (TTransform) 247// two calls of function TTransform are merged into single one 248// A..D - offsets in bytes to load from a and b buffers 249// E..H - offsets in bytes to store first results to tmp buffer 250// E1..H1 - offsets in bytes to store second results to tmp buffer 251#define HORIZONTAL_PASS(A, B, C, D, E, F, G, H, E1, F1, G1, H1) \ 252 "lbu %[temp0], "#A"(%[a]) \n\t" \ 253 "lbu %[temp1], "#B"(%[a]) \n\t" \ 254 "lbu %[temp2], "#C"(%[a]) \n\t" \ 255 "lbu %[temp3], "#D"(%[a]) \n\t" \ 256 "lbu %[temp4], "#A"(%[b]) \n\t" \ 257 "lbu %[temp5], "#B"(%[b]) \n\t" \ 258 "lbu %[temp6], "#C"(%[b]) \n\t" \ 259 "lbu %[temp7], "#D"(%[b]) \n\t" \ 260 "addu %[temp8], %[temp0], %[temp2] \n\t" \ 261 "subu %[temp0], %[temp0], %[temp2] \n\t" \ 262 "addu %[temp2], %[temp1], %[temp3] \n\t" \ 263 "subu %[temp1], %[temp1], %[temp3] \n\t" \ 264 "addu %[temp3], %[temp4], %[temp6] \n\t" \ 265 "subu %[temp4], %[temp4], %[temp6] \n\t" \ 266 "addu %[temp6], %[temp5], %[temp7] \n\t" \ 267 "subu %[temp5], %[temp5], %[temp7] \n\t" \ 268 "addu %[temp7], %[temp8], %[temp2] \n\t" \ 269 "subu %[temp2], %[temp8], %[temp2] \n\t" \ 270 "addu %[temp8], %[temp0], %[temp1] \n\t" \ 271 "subu %[temp0], %[temp0], %[temp1] \n\t" \ 272 "addu %[temp1], %[temp3], %[temp6] \n\t" \ 273 "subu %[temp3], %[temp3], %[temp6] \n\t" \ 274 "addu %[temp6], %[temp4], %[temp5] \n\t" \ 275 "subu %[temp4], %[temp4], %[temp5] \n\t" \ 276 "sw %[temp7], "#E"(%[tmp]) \n\t" \ 277 "sw %[temp2], "#H"(%[tmp]) \n\t" \ 278 "sw %[temp8], "#F"(%[tmp]) \n\t" \ 279 "sw %[temp0], "#G"(%[tmp]) \n\t" \ 280 "sw %[temp1], "#E1"(%[tmp]) \n\t" \ 281 "sw %[temp3], "#H1"(%[tmp]) \n\t" \ 282 "sw %[temp6], "#F1"(%[tmp]) \n\t" \ 283 "sw %[temp4], "#G1"(%[tmp]) \n\t" 284 285// macro for one vertical pass in Disto4x4 (TTransform) 286// two calls of function TTransform are merged into single one 287// since only one accu is available in mips32r1 instruction set 288// first is done second call of function TTransform and after 289// that first one. 290// const int sum1 = TTransform(a, w); 291// const int sum2 = TTransform(b, w); 292// return abs(sum2 - sum1) >> 5; 293// (sum2 - sum1) is calculated with madds (sub2) and msubs (sub1) 294// A..D - offsets in bytes to load first results from tmp buffer 295// A1..D1 - offsets in bytes to load second results from tmp buffer 296// E..H - offsets in bytes to load from w buffer 297#define VERTICAL_PASS(A, B, C, D, A1, B1, C1, D1, E, F, G, H) \ 298 "lw %[temp0], "#A1"(%[tmp]) \n\t" \ 299 "lw %[temp1], "#C1"(%[tmp]) \n\t" \ 300 "lw %[temp2], "#B1"(%[tmp]) \n\t" \ 301 "lw %[temp3], "#D1"(%[tmp]) \n\t" \ 302 "addu %[temp8], %[temp0], %[temp1] \n\t" \ 303 "subu %[temp0], %[temp0], %[temp1] \n\t" \ 304 "addu %[temp1], %[temp2], %[temp3] \n\t" \ 305 "subu %[temp2], %[temp2], %[temp3] \n\t" \ 306 "addu %[temp3], %[temp8], %[temp1] \n\t" \ 307 "subu %[temp8], %[temp8], %[temp1] \n\t" \ 308 "addu %[temp1], %[temp0], %[temp2] \n\t" \ 309 "subu %[temp0], %[temp0], %[temp2] \n\t" \ 310 "sra %[temp4], %[temp3], 31 \n\t" \ 311 "sra %[temp5], %[temp1], 31 \n\t" \ 312 "sra %[temp6], %[temp0], 31 \n\t" \ 313 "sra %[temp7], %[temp8], 31 \n\t" \ 314 "xor %[temp3], %[temp3], %[temp4] \n\t" \ 315 "xor %[temp1], %[temp1], %[temp5] \n\t" \ 316 "xor %[temp0], %[temp0], %[temp6] \n\t" \ 317 "xor %[temp8], %[temp8], %[temp7] \n\t" \ 318 "subu %[temp3], %[temp3], %[temp4] \n\t" \ 319 "subu %[temp1], %[temp1], %[temp5] \n\t" \ 320 "subu %[temp0], %[temp0], %[temp6] \n\t" \ 321 "subu %[temp8], %[temp8], %[temp7] \n\t" \ 322 "lhu %[temp4], "#E"(%[w]) \n\t" \ 323 "lhu %[temp5], "#F"(%[w]) \n\t" \ 324 "lhu %[temp6], "#G"(%[w]) \n\t" \ 325 "lhu %[temp7], "#H"(%[w]) \n\t" \ 326 "madd %[temp4], %[temp3] \n\t" \ 327 "madd %[temp5], %[temp1] \n\t" \ 328 "madd %[temp6], %[temp0] \n\t" \ 329 "madd %[temp7], %[temp8] \n\t" \ 330 "lw %[temp0], "#A"(%[tmp]) \n\t" \ 331 "lw %[temp1], "#C"(%[tmp]) \n\t" \ 332 "lw %[temp2], "#B"(%[tmp]) \n\t" \ 333 "lw %[temp3], "#D"(%[tmp]) \n\t" \ 334 "addu %[temp8], %[temp0], %[temp1] \n\t" \ 335 "subu %[temp0], %[temp0], %[temp1] \n\t" \ 336 "addu %[temp1], %[temp2], %[temp3] \n\t" \ 337 "subu %[temp2], %[temp2], %[temp3] \n\t" \ 338 "addu %[temp3], %[temp8], %[temp1] \n\t" \ 339 "subu %[temp1], %[temp8], %[temp1] \n\t" \ 340 "addu %[temp8], %[temp0], %[temp2] \n\t" \ 341 "subu %[temp0], %[temp0], %[temp2] \n\t" \ 342 "sra %[temp2], %[temp3], 31 \n\t" \ 343 "xor %[temp3], %[temp3], %[temp2] \n\t" \ 344 "subu %[temp3], %[temp3], %[temp2] \n\t" \ 345 "msub %[temp4], %[temp3] \n\t" \ 346 "sra %[temp2], %[temp8], 31 \n\t" \ 347 "sra %[temp3], %[temp0], 31 \n\t" \ 348 "sra %[temp4], %[temp1], 31 \n\t" \ 349 "xor %[temp8], %[temp8], %[temp2] \n\t" \ 350 "xor %[temp0], %[temp0], %[temp3] \n\t" \ 351 "xor %[temp1], %[temp1], %[temp4] \n\t" \ 352 "subu %[temp8], %[temp8], %[temp2] \n\t" \ 353 "subu %[temp0], %[temp0], %[temp3] \n\t" \ 354 "subu %[temp1], %[temp1], %[temp4] \n\t" \ 355 "msub %[temp5], %[temp8] \n\t" \ 356 "msub %[temp6], %[temp0] \n\t" \ 357 "msub %[temp7], %[temp1] \n\t" 358 359static int Disto4x4(const uint8_t* const a, const uint8_t* const b, 360 const uint16_t* const w) { 361 int tmp[32]; 362 int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7, temp8; 363 364 __asm__ volatile( 365 HORIZONTAL_PASS( 0, 1, 2, 3, 0, 4, 8, 12, 64, 68, 72, 76) 366 HORIZONTAL_PASS(16, 17, 18, 19, 16, 20, 24, 28, 80, 84, 88, 92) 367 HORIZONTAL_PASS(32, 33, 34, 35, 32, 36, 40, 44, 96, 100, 104, 108) 368 HORIZONTAL_PASS(48, 49, 50, 51, 48, 52, 56, 60, 112, 116, 120, 124) 369 "mthi $zero \n\t" 370 "mtlo $zero \n\t" 371 VERTICAL_PASS( 0, 16, 32, 48, 64, 80, 96, 112, 0, 8, 16, 24) 372 VERTICAL_PASS( 4, 20, 36, 52, 68, 84, 100, 116, 2, 10, 18, 26) 373 VERTICAL_PASS( 8, 24, 40, 56, 72, 88, 104, 120, 4, 12, 20, 28) 374 VERTICAL_PASS(12, 28, 44, 60, 76, 92, 108, 124, 6, 14, 22, 30) 375 "mflo %[temp0] \n\t" 376 "sra %[temp1], %[temp0], 31 \n\t" 377 "xor %[temp0], %[temp0], %[temp1] \n\t" 378 "subu %[temp0], %[temp0], %[temp1] \n\t" 379 "sra %[temp0], %[temp0], 5 \n\t" 380 381 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2), 382 [temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), 383 [temp6]"=&r"(temp6), [temp7]"=&r"(temp7), [temp8]"=&r"(temp8) 384 : [a]"r"(a), [b]"r"(b), [w]"r"(w), [tmp]"r"(tmp) 385 : "memory", "hi", "lo" 386 ); 387 388 return temp0; 389} 390 391#undef VERTICAL_PASS 392#undef HORIZONTAL_PASS 393 394static int Disto16x16(const uint8_t* const a, const uint8_t* const b, 395 const uint16_t* const w) { 396 int D = 0; 397 int x, y; 398 for (y = 0; y < 16 * BPS; y += 4 * BPS) { 399 for (x = 0; x < 16; x += 4) { 400 D += Disto4x4(a + x + y, b + x + y, w); 401 } 402 } 403 return D; 404} 405 406// macro for one horizontal pass in FTransform 407// temp0..temp15 holds tmp[0]..tmp[15] 408// A..D - offsets in bytes to load from src and ref buffers 409// TEMP0..TEMP3 - registers for corresponding tmp elements 410#define HORIZONTAL_PASS(A, B, C, D, TEMP0, TEMP1, TEMP2, TEMP3) \ 411 "lw %["#TEMP1"], 0(%[args]) \n\t" \ 412 "lw %["#TEMP2"], 4(%[args]) \n\t" \ 413 "lbu %[temp16], "#A"(%["#TEMP1"]) \n\t" \ 414 "lbu %[temp17], "#A"(%["#TEMP2"]) \n\t" \ 415 "lbu %[temp18], "#B"(%["#TEMP1"]) \n\t" \ 416 "lbu %[temp19], "#B"(%["#TEMP2"]) \n\t" \ 417 "subu %[temp20], %[temp16], %[temp17] \n\t" \ 418 "lbu %[temp16], "#C"(%["#TEMP1"]) \n\t" \ 419 "lbu %[temp17], "#C"(%["#TEMP2"]) \n\t" \ 420 "subu %["#TEMP0"], %[temp18], %[temp19] \n\t" \ 421 "lbu %[temp18], "#D"(%["#TEMP1"]) \n\t" \ 422 "lbu %[temp19], "#D"(%["#TEMP2"]) \n\t" \ 423 "subu %["#TEMP1"], %[temp16], %[temp17] \n\t" \ 424 "subu %["#TEMP2"], %[temp18], %[temp19] \n\t" \ 425 "addu %["#TEMP3"], %[temp20], %["#TEMP2"] \n\t" \ 426 "subu %["#TEMP2"], %[temp20], %["#TEMP2"] \n\t" \ 427 "addu %[temp20], %["#TEMP0"], %["#TEMP1"] \n\t" \ 428 "subu %["#TEMP0"], %["#TEMP0"], %["#TEMP1"] \n\t" \ 429 "mul %[temp16], %["#TEMP2"], %[c5352] \n\t" \ 430 "mul %[temp17], %["#TEMP2"], %[c2217] \n\t" \ 431 "mul %[temp18], %["#TEMP0"], %[c5352] \n\t" \ 432 "mul %[temp19], %["#TEMP0"], %[c2217] \n\t" \ 433 "addu %["#TEMP1"], %["#TEMP3"], %[temp20] \n\t" \ 434 "subu %[temp20], %["#TEMP3"], %[temp20] \n\t" \ 435 "sll %["#TEMP0"], %["#TEMP1"], 3 \n\t" \ 436 "sll %["#TEMP2"], %[temp20], 3 \n\t" \ 437 "addiu %[temp16], %[temp16], 1812 \n\t" \ 438 "addiu %[temp17], %[temp17], 937 \n\t" \ 439 "addu %[temp16], %[temp16], %[temp19] \n\t" \ 440 "subu %[temp17], %[temp17], %[temp18] \n\t" \ 441 "sra %["#TEMP1"], %[temp16], 9 \n\t" \ 442 "sra %["#TEMP3"], %[temp17], 9 \n\t" 443 444// macro for one vertical pass in FTransform 445// temp0..temp15 holds tmp[0]..tmp[15] 446// A..D - offsets in bytes to store to out buffer 447// TEMP0, TEMP4, TEMP8 and TEMP12 - registers for corresponding tmp elements 448#define VERTICAL_PASS(A, B, C, D, TEMP0, TEMP4, TEMP8, TEMP12) \ 449 "addu %[temp16], %["#TEMP0"], %["#TEMP12"] \n\t" \ 450 "subu %[temp19], %["#TEMP0"], %["#TEMP12"] \n\t" \ 451 "addu %[temp17], %["#TEMP4"], %["#TEMP8"] \n\t" \ 452 "subu %[temp18], %["#TEMP4"], %["#TEMP8"] \n\t" \ 453 "mul %["#TEMP8"], %[temp19], %[c2217] \n\t" \ 454 "mul %["#TEMP12"], %[temp18], %[c2217] \n\t" \ 455 "mul %["#TEMP4"], %[temp19], %[c5352] \n\t" \ 456 "mul %[temp18], %[temp18], %[c5352] \n\t" \ 457 "addiu %[temp16], %[temp16], 7 \n\t" \ 458 "addu %["#TEMP0"], %[temp16], %[temp17] \n\t" \ 459 "sra %["#TEMP0"], %["#TEMP0"], 4 \n\t" \ 460 "addu %["#TEMP12"], %["#TEMP12"], %["#TEMP4"] \n\t" \ 461 "subu %["#TEMP4"], %[temp16], %[temp17] \n\t" \ 462 "sra %["#TEMP4"], %["#TEMP4"], 4 \n\t" \ 463 "addiu %["#TEMP8"], %["#TEMP8"], 30000 \n\t" \ 464 "addiu %["#TEMP12"], %["#TEMP12"], 12000 \n\t" \ 465 "addiu %["#TEMP8"], %["#TEMP8"], 21000 \n\t" \ 466 "subu %["#TEMP8"], %["#TEMP8"], %[temp18] \n\t" \ 467 "sra %["#TEMP12"], %["#TEMP12"], 16 \n\t" \ 468 "sra %["#TEMP8"], %["#TEMP8"], 16 \n\t" \ 469 "addiu %[temp16], %["#TEMP12"], 1 \n\t" \ 470 "movn %["#TEMP12"], %[temp16], %[temp19] \n\t" \ 471 "sh %["#TEMP0"], "#A"(%[temp20]) \n\t" \ 472 "sh %["#TEMP4"], "#C"(%[temp20]) \n\t" \ 473 "sh %["#TEMP8"], "#D"(%[temp20]) \n\t" \ 474 "sh %["#TEMP12"], "#B"(%[temp20]) \n\t" 475 476static void FTransform(const uint8_t* src, const uint8_t* ref, int16_t* out) { 477 int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7, temp8; 478 int temp9, temp10, temp11, temp12, temp13, temp14, temp15, temp16; 479 int temp17, temp18, temp19, temp20; 480 const int c2217 = 2217; 481 const int c5352 = 5352; 482 const int* const args[3] = 483 { (const int*)src, (const int*)ref, (const int*)out }; 484 485 __asm__ volatile( 486 HORIZONTAL_PASS( 0, 1, 2, 3, temp0, temp1, temp2, temp3) 487 HORIZONTAL_PASS(16, 17, 18, 19, temp4, temp5, temp6, temp7) 488 HORIZONTAL_PASS(32, 33, 34, 35, temp8, temp9, temp10, temp11) 489 HORIZONTAL_PASS(48, 49, 50, 51, temp12, temp13, temp14, temp15) 490 "lw %[temp20], 8(%[args]) \n\t" 491 VERTICAL_PASS(0, 8, 16, 24, temp0, temp4, temp8, temp12) 492 VERTICAL_PASS(2, 10, 18, 26, temp1, temp5, temp9, temp13) 493 VERTICAL_PASS(4, 12, 20, 28, temp2, temp6, temp10, temp14) 494 VERTICAL_PASS(6, 14, 22, 30, temp3, temp7, temp11, temp15) 495 496 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2), 497 [temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), 498 [temp6]"=&r"(temp6), [temp7]"=&r"(temp7), [temp8]"=&r"(temp8), 499 [temp9]"=&r"(temp9), [temp10]"=&r"(temp10), [temp11]"=&r"(temp11), 500 [temp12]"=&r"(temp12), [temp13]"=&r"(temp13), [temp14]"=&r"(temp14), 501 [temp15]"=&r"(temp15), [temp16]"=&r"(temp16), [temp17]"=&r"(temp17), 502 [temp18]"=&r"(temp18), [temp19]"=&r"(temp19), [temp20]"=&r"(temp20) 503 : [args]"r"(args), [c2217]"r"(c2217), [c5352]"r"(c5352) 504 : "memory", "hi", "lo" 505 ); 506} 507 508#undef VERTICAL_PASS 509#undef HORIZONTAL_PASS 510 511// Forward declaration. 512extern int VP8GetResidualCostMIPS32(int ctx0, const VP8Residual* const res); 513 514int VP8GetResidualCostMIPS32(int ctx0, const VP8Residual* const res) { 515 int n = res->first; 516 // should be prob[VP8EncBands[n]], but it's equivalent for n=0 or 1 517 int p0 = res->prob[n][ctx0][0]; 518 const uint16_t* t = res->cost[n][ctx0]; 519 int cost; 520 const int const_2 = 2; 521 const int const_255 = 255; 522 const int const_max_level = MAX_VARIABLE_LEVEL; 523 int res_cost; 524 int res_prob; 525 int res_coeffs; 526 int res_last; 527 int v_reg; 528 int b_reg; 529 int ctx_reg; 530 int cost_add, temp_1, temp_2, temp_3; 531 532 if (res->last < 0) { 533 return VP8BitCost(0, p0); 534 } 535 536 cost = (ctx0 == 0) ? VP8BitCost(1, p0) : 0; 537 538 res_cost = (int)res->cost; 539 res_prob = (int)res->prob; 540 res_coeffs = (int)res->coeffs; 541 res_last = (int)res->last; 542 543 __asm__ volatile( 544 ".set push \n\t" 545 ".set noreorder \n\t" 546 547 "sll %[temp_1], %[n], 1 \n\t" 548 "addu %[res_coeffs], %[res_coeffs], %[temp_1] \n\t" 549 "slt %[temp_2], %[n], %[res_last] \n\t" 550 "bnez %[temp_2], 1f \n\t" 551 " li %[cost_add], 0 \n\t" 552 "b 2f \n\t" 553 " nop \n\t" 554 "1: \n\t" 555 "lh %[v_reg], 0(%[res_coeffs]) \n\t" 556 "addu %[b_reg], %[n], %[VP8EncBands] \n\t" 557 "move %[temp_1], %[const_max_level] \n\t" 558 "addu %[cost], %[cost], %[cost_add] \n\t" 559 "negu %[temp_2], %[v_reg] \n\t" 560 "slti %[temp_3], %[v_reg], 0 \n\t" 561 "movn %[v_reg], %[temp_2], %[temp_3] \n\t" 562 "lbu %[b_reg], 1(%[b_reg]) \n\t" 563 "li %[cost_add], 0 \n\t" 564 565 "sltiu %[temp_3], %[v_reg], 2 \n\t" 566 "move %[ctx_reg], %[v_reg] \n\t" 567 "movz %[ctx_reg], %[const_2], %[temp_3] \n\t" 568 // cost += VP8LevelCost(t, v); 569 "slt %[temp_3], %[v_reg], %[const_max_level] \n\t" 570 "movn %[temp_1], %[v_reg], %[temp_3] \n\t" 571 "sll %[temp_2], %[v_reg], 1 \n\t" 572 "addu %[temp_2], %[temp_2], %[VP8LevelFixedCosts] \n\t" 573 "lhu %[temp_2], 0(%[temp_2]) \n\t" 574 "sll %[temp_1], %[temp_1], 1 \n\t" 575 "addu %[temp_1], %[temp_1], %[t] \n\t" 576 "lhu %[temp_3], 0(%[temp_1]) \n\t" 577 "addu %[cost], %[cost], %[temp_2] \n\t" 578 579 // t = res->cost[b][ctx]; 580 "sll %[temp_1], %[ctx_reg], 7 \n\t" 581 "sll %[temp_2], %[ctx_reg], 3 \n\t" 582 "addu %[cost], %[cost], %[temp_3] \n\t" 583 "addu %[temp_1], %[temp_1], %[temp_2] \n\t" 584 "sll %[temp_2], %[b_reg], 3 \n\t" 585 "sll %[temp_3], %[b_reg], 5 \n\t" 586 "sub %[temp_2], %[temp_3], %[temp_2] \n\t" 587 "sll %[temp_3], %[temp_2], 4 \n\t" 588 "addu %[temp_1], %[temp_1], %[temp_3] \n\t" 589 "addu %[temp_2], %[temp_2], %[res_cost] \n\t" 590 "addiu %[n], %[n], 1 \n\t" 591 "addu %[t], %[temp_1], %[temp_2] \n\t" 592 "slt %[temp_1], %[n], %[res_last] \n\t" 593 "bnez %[temp_1], 1b \n\t" 594 " addiu %[res_coeffs], %[res_coeffs], 2 \n\t" 595 "2: \n\t" 596 597 ".set pop \n\t" 598 : [cost]"+r"(cost), [t]"+r"(t), [n]"+r"(n), [v_reg]"=&r"(v_reg), 599 [ctx_reg]"=&r"(ctx_reg), [b_reg]"=&r"(b_reg), [cost_add]"=&r"(cost_add), 600 [temp_1]"=&r"(temp_1), [temp_2]"=&r"(temp_2), [temp_3]"=&r"(temp_3) 601 : [const_2]"r"(const_2), [const_255]"r"(const_255), [res_last]"r"(res_last), 602 [VP8EntropyCost]"r"(VP8EntropyCost), [VP8EncBands]"r"(VP8EncBands), 603 [const_max_level]"r"(const_max_level), [res_prob]"r"(res_prob), 604 [VP8LevelFixedCosts]"r"(VP8LevelFixedCosts), [res_coeffs]"r"(res_coeffs), 605 [res_cost]"r"(res_cost) 606 : "memory" 607 ); 608 609 // Last coefficient is always non-zero 610 { 611 const int v = abs(res->coeffs[n]); 612 assert(v != 0); 613 cost += VP8LevelCost(t, v); 614 if (n < 15) { 615 const int b = VP8EncBands[n + 1]; 616 const int ctx = (v == 1) ? 1 : 2; 617 const int last_p0 = res->prob[b][ctx][0]; 618 cost += VP8BitCost(0, last_p0); 619 } 620 } 621 return cost; 622} 623 624#define GET_SSE_INNER(A, B, C, D) \ 625 "lbu %[temp0], "#A"(%[a]) \n\t" \ 626 "lbu %[temp1], "#A"(%[b]) \n\t" \ 627 "lbu %[temp2], "#B"(%[a]) \n\t" \ 628 "lbu %[temp3], "#B"(%[b]) \n\t" \ 629 "lbu %[temp4], "#C"(%[a]) \n\t" \ 630 "lbu %[temp5], "#C"(%[b]) \n\t" \ 631 "lbu %[temp6], "#D"(%[a]) \n\t" \ 632 "lbu %[temp7], "#D"(%[b]) \n\t" \ 633 "subu %[temp0], %[temp0], %[temp1] \n\t" \ 634 "subu %[temp2], %[temp2], %[temp3] \n\t" \ 635 "subu %[temp4], %[temp4], %[temp5] \n\t" \ 636 "subu %[temp6], %[temp6], %[temp7] \n\t" \ 637 "madd %[temp0], %[temp0] \n\t" \ 638 "madd %[temp2], %[temp2] \n\t" \ 639 "madd %[temp4], %[temp4] \n\t" \ 640 "madd %[temp6], %[temp6] \n\t" 641 642#define GET_SSE(A, B, C, D) \ 643 GET_SSE_INNER(A, A + 1, A + 2, A + 3) \ 644 GET_SSE_INNER(B, B + 1, B + 2, B + 3) \ 645 GET_SSE_INNER(C, C + 1, C + 2, C + 3) \ 646 GET_SSE_INNER(D, D + 1, D + 2, D + 3) 647 648#if !defined(WORK_AROUND_GCC) 649static int SSE16x16(const uint8_t* a, const uint8_t* b) { 650 int count; 651 int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7; 652 653 __asm__ volatile( 654 "mult $zero, $zero \n\t" 655 656 GET_SSE( 0, 4, 8, 12) 657 GET_SSE( 16, 20, 24, 28) 658 GET_SSE( 32, 36, 40, 44) 659 GET_SSE( 48, 52, 56, 60) 660 GET_SSE( 64, 68, 72, 76) 661 GET_SSE( 80, 84, 88, 92) 662 GET_SSE( 96, 100, 104, 108) 663 GET_SSE(112, 116, 120, 124) 664 GET_SSE(128, 132, 136, 140) 665 GET_SSE(144, 148, 152, 156) 666 GET_SSE(160, 164, 168, 172) 667 GET_SSE(176, 180, 184, 188) 668 GET_SSE(192, 196, 200, 204) 669 GET_SSE(208, 212, 216, 220) 670 GET_SSE(224, 228, 232, 236) 671 GET_SSE(240, 244, 248, 252) 672 673 "mflo %[count] \n\t" 674 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2), 675 [temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), 676 [temp6]"=&r"(temp6), [temp7]"=&r"(temp7), [count]"=&r"(count) 677 : [a]"r"(a), [b]"r"(b) 678 : "memory", "hi" , "lo" 679 ); 680 return count; 681} 682 683static int SSE16x8(const uint8_t* a, const uint8_t* b) { 684 int count; 685 int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7; 686 687 __asm__ volatile( 688 "mult $zero, $zero \n\t" 689 690 GET_SSE( 0, 4, 8, 12) 691 GET_SSE( 16, 20, 24, 28) 692 GET_SSE( 32, 36, 40, 44) 693 GET_SSE( 48, 52, 56, 60) 694 GET_SSE( 64, 68, 72, 76) 695 GET_SSE( 80, 84, 88, 92) 696 GET_SSE( 96, 100, 104, 108) 697 GET_SSE(112, 116, 120, 124) 698 699 "mflo %[count] \n\t" 700 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2), 701 [temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), 702 [temp6]"=&r"(temp6), [temp7]"=&r"(temp7), [count]"=&r"(count) 703 : [a]"r"(a), [b]"r"(b) 704 : "memory", "hi" , "lo" 705 ); 706 return count; 707} 708 709static int SSE8x8(const uint8_t* a, const uint8_t* b) { 710 int count; 711 int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7; 712 713 __asm__ volatile( 714 "mult $zero, $zero \n\t" 715 716 GET_SSE( 0, 4, 16, 20) 717 GET_SSE(32, 36, 48, 52) 718 GET_SSE(64, 68, 80, 84) 719 GET_SSE(96, 100, 112, 116) 720 721 "mflo %[count] \n\t" 722 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2), 723 [temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), 724 [temp6]"=&r"(temp6), [temp7]"=&r"(temp7), [count]"=&r"(count) 725 : [a]"r"(a), [b]"r"(b) 726 : "memory", "hi" , "lo" 727 ); 728 return count; 729} 730 731static int SSE4x4(const uint8_t* a, const uint8_t* b) { 732 int count; 733 int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7; 734 735 __asm__ volatile( 736 "mult $zero, $zero \n\t" 737 738 GET_SSE(0, 16, 32, 48) 739 740 "mflo %[count] \n\t" 741 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2), 742 [temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), 743 [temp6]"=&r"(temp6), [temp7]"=&r"(temp7), [count]"=&r"(count) 744 : [a]"r"(a), [b]"r"(b) 745 : "memory", "hi" , "lo" 746 ); 747 return count; 748} 749 750#endif // WORK_AROUND_GCC 751 752#undef GET_SSE_MIPS32 753#undef GET_SSE_MIPS32_INNER 754 755#endif // WEBP_USE_MIPS32 756 757//------------------------------------------------------------------------------ 758// Entry point 759 760extern void VP8EncDspInitMIPS32(void); 761 762void VP8EncDspInitMIPS32(void) { 763#if defined(WEBP_USE_MIPS32) 764 VP8ITransform = ITransform; 765 VP8EncQuantizeBlock = QuantizeBlock; 766 VP8TDisto4x4 = Disto4x4; 767 VP8TDisto16x16 = Disto16x16; 768 VP8FTransform = FTransform; 769#if !defined(WORK_AROUND_GCC) 770 VP8SSE16x16 = SSE16x16; 771 VP8SSE8x8 = SSE8x8; 772 VP8SSE16x8 = SSE16x8; 773 VP8SSE4x4 = SSE4x4; 774#endif 775#endif // WEBP_USE_MIPS32 776} 777