1 /* 2 * Copyright 2012 The LibYuv Project Authors. All rights reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include "libyuv/basic_types.h" 12 #include "libyuv/row.h" 13 14 #ifdef __cplusplus 15 namespace libyuv { 16 extern "C" { 17 #endif 18 19 // This module is for GCC MIPS DSPR2 20 #if !defined(LIBYUV_DISABLE_MIPS) && \ 21 defined(__mips_dsp) && (__mips_dsp_rev >= 2) && \ 22 (_MIPS_SIM == _MIPS_SIM_ABI32) 23 24 void ScaleRowDown2_DSPR2(const uint8* src_ptr, ptrdiff_t src_stride, 25 uint8* dst, int dst_width) { 26 __asm__ __volatile__( 27 ".set push \n" 28 ".set noreorder \n" 29 30 "srl $t9, %[dst_width], 4 \n" // iterations -> by 16 31 "beqz $t9, 2f \n" 32 " nop \n" 33 34 "1: \n" 35 "lw $t0, 0(%[src_ptr]) \n" // |3|2|1|0| 36 "lw $t1, 4(%[src_ptr]) \n" // |7|6|5|4| 37 "lw $t2, 8(%[src_ptr]) \n" // |11|10|9|8| 38 "lw $t3, 12(%[src_ptr]) \n" // |15|14|13|12| 39 "lw $t4, 16(%[src_ptr]) \n" // |19|18|17|16| 40 "lw $t5, 20(%[src_ptr]) \n" // |23|22|21|20| 41 "lw $t6, 24(%[src_ptr]) \n" // |27|26|25|24| 42 "lw $t7, 28(%[src_ptr]) \n" // |31|30|29|28| 43 // TODO(fbarchard): Use odd pixels instead of even. 44 "precr.qb.ph $t8, $t1, $t0 \n" // |6|4|2|0| 45 "precr.qb.ph $t0, $t3, $t2 \n" // |14|12|10|8| 46 "precr.qb.ph $t1, $t5, $t4 \n" // |22|20|18|16| 47 "precr.qb.ph $t2, $t7, $t6 \n" // |30|28|26|24| 48 "addiu %[src_ptr], %[src_ptr], 32 \n" 49 "addiu $t9, $t9, -1 \n" 50 "sw $t8, 0(%[dst]) \n" 51 "sw $t0, 4(%[dst]) \n" 52 "sw $t1, 8(%[dst]) \n" 53 "sw $t2, 12(%[dst]) \n" 54 "bgtz $t9, 1b \n" 55 " addiu %[dst], %[dst], 16 \n" 56 57 "2: \n" 58 "andi $t9, %[dst_width], 0xf \n" // residue 59 "beqz $t9, 3f \n" 60 " nop \n" 61 62 "21: \n" 63 "lbu $t0, 0(%[src_ptr]) \n" 64 "addiu %[src_ptr], %[src_ptr], 2 \n" 65 "addiu $t9, $t9, -1 \n" 66 "sb $t0, 0(%[dst]) \n" 67 "bgtz $t9, 21b \n" 68 " addiu %[dst], %[dst], 1 \n" 69 70 "3: \n" 71 ".set pop \n" 72 : [src_ptr] "+r" (src_ptr), 73 [dst] "+r" (dst) 74 : [dst_width] "r" (dst_width) 75 : "t0", "t1", "t2", "t3", "t4", "t5", 76 "t6", "t7", "t8", "t9" 77 ); 78 } 79 80 void ScaleRowDown2Box_DSPR2(const uint8* src_ptr, ptrdiff_t src_stride, 81 uint8* dst, int dst_width) { 82 const uint8* t = src_ptr + src_stride; 83 84 __asm__ __volatile__ ( 85 ".set push \n" 86 ".set noreorder \n" 87 88 "srl $t9, %[dst_width], 3 \n" // iterations -> step 8 89 "bltz $t9, 2f \n" 90 " nop \n" 91 92 "1: \n" 93 "lw $t0, 0(%[src_ptr]) \n" // |3|2|1|0| 94 "lw $t1, 4(%[src_ptr]) \n" // |7|6|5|4| 95 "lw $t2, 8(%[src_ptr]) \n" // |11|10|9|8| 96 "lw $t3, 12(%[src_ptr]) \n" // |15|14|13|12| 97 "lw $t4, 0(%[t]) \n" // |19|18|17|16| 98 "lw $t5, 4(%[t]) \n" // |23|22|21|20| 99 "lw $t6, 8(%[t]) \n" // |27|26|25|24| 100 "lw $t7, 12(%[t]) \n" // |31|30|29|28| 101 "addiu $t9, $t9, -1 \n" 102 "srl $t8, $t0, 16 \n" // |X|X|3|2| 103 "ins $t0, $t4, 16, 16 \n" // |17|16|1|0| 104 "ins $t4, $t8, 0, 16 \n" // |19|18|3|2| 105 "raddu.w.qb $t0, $t0 \n" // |17+16+1+0| 106 "raddu.w.qb $t4, $t4 \n" // |19+18+3+2| 107 "shra_r.w $t0, $t0, 2 \n" // |t0+2|>>2 108 "shra_r.w $t4, $t4, 2 \n" // |t4+2|>>2 109 "srl $t8, $t1, 16 \n" // |X|X|7|6| 110 "ins $t1, $t5, 16, 16 \n" // |21|20|5|4| 111 "ins $t5, $t8, 0, 16 \n" // |22|23|7|6| 112 "raddu.w.qb $t1, $t1 \n" // |21+20+5+4| 113 "raddu.w.qb $t5, $t5 \n" // |23+22+7+6| 114 "shra_r.w $t1, $t1, 2 \n" // |t1+2|>>2 115 "shra_r.w $t5, $t5, 2 \n" // |t5+2|>>2 116 "srl $t8, $t2, 16 \n" // |X|X|11|10| 117 "ins $t2, $t6, 16, 16 \n" // |25|24|9|8| 118 "ins $t6, $t8, 0, 16 \n" // |27|26|11|10| 119 "raddu.w.qb $t2, $t2 \n" // |25+24+9+8| 120 "raddu.w.qb $t6, $t6 \n" // |27+26+11+10| 121 "shra_r.w $t2, $t2, 2 \n" // |t2+2|>>2 122 "shra_r.w $t6, $t6, 2 \n" // |t5+2|>>2 123 "srl $t8, $t3, 16 \n" // |X|X|15|14| 124 "ins $t3, $t7, 16, 16 \n" // |29|28|13|12| 125 "ins $t7, $t8, 0, 16 \n" // |31|30|15|14| 126 "raddu.w.qb $t3, $t3 \n" // |29+28+13+12| 127 "raddu.w.qb $t7, $t7 \n" // |31+30+15+14| 128 "shra_r.w $t3, $t3, 2 \n" // |t3+2|>>2 129 "shra_r.w $t7, $t7, 2 \n" // |t7+2|>>2 130 "addiu %[src_ptr], %[src_ptr], 16 \n" 131 "addiu %[t], %[t], 16 \n" 132 "sb $t0, 0(%[dst]) \n" 133 "sb $t4, 1(%[dst]) \n" 134 "sb $t1, 2(%[dst]) \n" 135 "sb $t5, 3(%[dst]) \n" 136 "sb $t2, 4(%[dst]) \n" 137 "sb $t6, 5(%[dst]) \n" 138 "sb $t3, 6(%[dst]) \n" 139 "sb $t7, 7(%[dst]) \n" 140 "bgtz $t9, 1b \n" 141 " addiu %[dst], %[dst], 8 \n" 142 143 "2: \n" 144 "andi $t9, %[dst_width], 0x7 \n" // x = residue 145 "beqz $t9, 3f \n" 146 " nop \n" 147 148 "21: \n" 149 "lwr $t1, 0(%[src_ptr]) \n" 150 "lwl $t1, 3(%[src_ptr]) \n" 151 "lwr $t2, 0(%[t]) \n" 152 "lwl $t2, 3(%[t]) \n" 153 "srl $t8, $t1, 16 \n" 154 "ins $t1, $t2, 16, 16 \n" 155 "ins $t2, $t8, 0, 16 \n" 156 "raddu.w.qb $t1, $t1 \n" 157 "raddu.w.qb $t2, $t2 \n" 158 "shra_r.w $t1, $t1, 2 \n" 159 "shra_r.w $t2, $t2, 2 \n" 160 "sb $t1, 0(%[dst]) \n" 161 "sb $t2, 1(%[dst]) \n" 162 "addiu %[src_ptr], %[src_ptr], 4 \n" 163 "addiu $t9, $t9, -2 \n" 164 "addiu %[t], %[t], 4 \n" 165 "bgtz $t9, 21b \n" 166 " addiu %[dst], %[dst], 2 \n" 167 168 "3: \n" 169 ".set pop \n" 170 171 : [src_ptr] "+r" (src_ptr), 172 [dst] "+r" (dst), [t] "+r" (t) 173 : [dst_width] "r" (dst_width) 174 : "t0", "t1", "t2", "t3", "t4", "t5", 175 "t6", "t7", "t8", "t9" 176 ); 177 } 178 179 void ScaleRowDown4_DSPR2(const uint8* src_ptr, ptrdiff_t src_stride, 180 uint8* dst, int dst_width) { 181 __asm__ __volatile__ ( 182 ".set push \n" 183 ".set noreorder \n" 184 185 "srl $t9, %[dst_width], 3 \n" 186 "beqz $t9, 2f \n" 187 " nop \n" 188 189 "1: \n" 190 "lw $t1, 0(%[src_ptr]) \n" // |3|2|1|0| 191 "lw $t2, 4(%[src_ptr]) \n" // |7|6|5|4| 192 "lw $t3, 8(%[src_ptr]) \n" // |11|10|9|8| 193 "lw $t4, 12(%[src_ptr]) \n" // |15|14|13|12| 194 "lw $t5, 16(%[src_ptr]) \n" // |19|18|17|16| 195 "lw $t6, 20(%[src_ptr]) \n" // |23|22|21|20| 196 "lw $t7, 24(%[src_ptr]) \n" // |27|26|25|24| 197 "lw $t8, 28(%[src_ptr]) \n" // |31|30|29|28| 198 "precr.qb.ph $t1, $t2, $t1 \n" // |6|4|2|0| 199 "precr.qb.ph $t2, $t4, $t3 \n" // |14|12|10|8| 200 "precr.qb.ph $t5, $t6, $t5 \n" // |22|20|18|16| 201 "precr.qb.ph $t6, $t8, $t7 \n" // |30|28|26|24| 202 "precr.qb.ph $t1, $t2, $t1 \n" // |12|8|4|0| 203 "precr.qb.ph $t5, $t6, $t5 \n" // |28|24|20|16| 204 "addiu %[src_ptr], %[src_ptr], 32 \n" 205 "addiu $t9, $t9, -1 \n" 206 "sw $t1, 0(%[dst]) \n" 207 "sw $t5, 4(%[dst]) \n" 208 "bgtz $t9, 1b \n" 209 " addiu %[dst], %[dst], 8 \n" 210 211 "2: \n" 212 "andi $t9, %[dst_width], 7 \n" // residue 213 "beqz $t9, 3f \n" 214 " nop \n" 215 216 "21: \n" 217 "lbu $t1, 0(%[src_ptr]) \n" 218 "addiu %[src_ptr], %[src_ptr], 4 \n" 219 "addiu $t9, $t9, -1 \n" 220 "sb $t1, 0(%[dst]) \n" 221 "bgtz $t9, 21b \n" 222 " addiu %[dst], %[dst], 1 \n" 223 224 "3: \n" 225 ".set pop \n" 226 : [src_ptr] "+r" (src_ptr), 227 [dst] "+r" (dst) 228 : [dst_width] "r" (dst_width) 229 : "t1", "t2", "t3", "t4", "t5", 230 "t6", "t7", "t8", "t9" 231 ); 232 } 233 234 void ScaleRowDown4Box_DSPR2(const uint8* src_ptr, ptrdiff_t src_stride, 235 uint8* dst, int dst_width) { 236 intptr_t stride = src_stride; 237 const uint8* s1 = src_ptr + stride; 238 const uint8* s2 = s1 + stride; 239 const uint8* s3 = s2 + stride; 240 241 __asm__ __volatile__ ( 242 ".set push \n" 243 ".set noreorder \n" 244 245 "srl $t9, %[dst_width], 1 \n" 246 "andi $t8, %[dst_width], 1 \n" 247 248 "1: \n" 249 "lw $t0, 0(%[src_ptr]) \n" // |3|2|1|0| 250 "lw $t1, 0(%[s1]) \n" // |7|6|5|4| 251 "lw $t2, 0(%[s2]) \n" // |11|10|9|8| 252 "lw $t3, 0(%[s3]) \n" // |15|14|13|12| 253 "lw $t4, 4(%[src_ptr]) \n" // |19|18|17|16| 254 "lw $t5, 4(%[s1]) \n" // |23|22|21|20| 255 "lw $t6, 4(%[s2]) \n" // |27|26|25|24| 256 "lw $t7, 4(%[s3]) \n" // |31|30|29|28| 257 "raddu.w.qb $t0, $t0 \n" // |3 + 2 + 1 + 0| 258 "raddu.w.qb $t1, $t1 \n" // |7 + 6 + 5 + 4| 259 "raddu.w.qb $t2, $t2 \n" // |11 + 10 + 9 + 8| 260 "raddu.w.qb $t3, $t3 \n" // |15 + 14 + 13 + 12| 261 "raddu.w.qb $t4, $t4 \n" // |19 + 18 + 17 + 16| 262 "raddu.w.qb $t5, $t5 \n" // |23 + 22 + 21 + 20| 263 "raddu.w.qb $t6, $t6 \n" // |27 + 26 + 25 + 24| 264 "raddu.w.qb $t7, $t7 \n" // |31 + 30 + 29 + 28| 265 "add $t0, $t0, $t1 \n" 266 "add $t1, $t2, $t3 \n" 267 "add $t0, $t0, $t1 \n" 268 "add $t4, $t4, $t5 \n" 269 "add $t6, $t6, $t7 \n" 270 "add $t4, $t4, $t6 \n" 271 "shra_r.w $t0, $t0, 4 \n" 272 "shra_r.w $t4, $t4, 4 \n" 273 "sb $t0, 0(%[dst]) \n" 274 "sb $t4, 1(%[dst]) \n" 275 "addiu %[src_ptr], %[src_ptr], 8 \n" 276 "addiu %[s1], %[s1], 8 \n" 277 "addiu %[s2], %[s2], 8 \n" 278 "addiu %[s3], %[s3], 8 \n" 279 "addiu $t9, $t9, -1 \n" 280 "bgtz $t9, 1b \n" 281 " addiu %[dst], %[dst], 2 \n" 282 "beqz $t8, 2f \n" 283 " nop \n" 284 285 "lw $t0, 0(%[src_ptr]) \n" // |3|2|1|0| 286 "lw $t1, 0(%[s1]) \n" // |7|6|5|4| 287 "lw $t2, 0(%[s2]) \n" // |11|10|9|8| 288 "lw $t3, 0(%[s3]) \n" // |15|14|13|12| 289 "raddu.w.qb $t0, $t0 \n" // |3 + 2 + 1 + 0| 290 "raddu.w.qb $t1, $t1 \n" // |7 + 6 + 5 + 4| 291 "raddu.w.qb $t2, $t2 \n" // |11 + 10 + 9 + 8| 292 "raddu.w.qb $t3, $t3 \n" // |15 + 14 + 13 + 12| 293 "add $t0, $t0, $t1 \n" 294 "add $t1, $t2, $t3 \n" 295 "add $t0, $t0, $t1 \n" 296 "shra_r.w $t0, $t0, 4 \n" 297 "sb $t0, 0(%[dst]) \n" 298 299 "2: \n" 300 ".set pop \n" 301 302 : [src_ptr] "+r" (src_ptr), 303 [dst] "+r" (dst), 304 [s1] "+r" (s1), 305 [s2] "+r" (s2), 306 [s3] "+r" (s3) 307 : [dst_width] "r" (dst_width) 308 : "t0", "t1", "t2", "t3", "t4", "t5", 309 "t6","t7", "t8", "t9" 310 ); 311 } 312 313 void ScaleRowDown34_DSPR2(const uint8* src_ptr, ptrdiff_t src_stride, 314 uint8* dst, int dst_width) { 315 __asm__ __volatile__ ( 316 ".set push \n" 317 ".set noreorder \n" 318 "1: \n" 319 "lw $t1, 0(%[src_ptr]) \n" // |3|2|1|0| 320 "lw $t2, 4(%[src_ptr]) \n" // |7|6|5|4| 321 "lw $t3, 8(%[src_ptr]) \n" // |11|10|9|8| 322 "lw $t4, 12(%[src_ptr]) \n" // |15|14|13|12| 323 "lw $t5, 16(%[src_ptr]) \n" // |19|18|17|16| 324 "lw $t6, 20(%[src_ptr]) \n" // |23|22|21|20| 325 "lw $t7, 24(%[src_ptr]) \n" // |27|26|25|24| 326 "lw $t8, 28(%[src_ptr]) \n" // |31|30|29|28| 327 "precrq.qb.ph $t0, $t2, $t4 \n" // |7|5|15|13| 328 "precrq.qb.ph $t9, $t6, $t8 \n" // |23|21|31|30| 329 "addiu %[dst_width], %[dst_width], -24 \n" 330 "ins $t1, $t1, 8, 16 \n" // |3|1|0|X| 331 "ins $t4, $t0, 8, 16 \n" // |X|15|13|12| 332 "ins $t5, $t5, 8, 16 \n" // |19|17|16|X| 333 "ins $t8, $t9, 8, 16 \n" // |X|31|29|28| 334 "addiu %[src_ptr], %[src_ptr], 32 \n" 335 "packrl.ph $t0, $t3, $t0 \n" // |9|8|7|5| 336 "packrl.ph $t9, $t7, $t9 \n" // |25|24|23|21| 337 "prepend $t1, $t2, 8 \n" // |4|3|1|0| 338 "prepend $t3, $t4, 24 \n" // |15|13|12|11| 339 "prepend $t5, $t6, 8 \n" // |20|19|17|16| 340 "prepend $t7, $t8, 24 \n" // |31|29|28|27| 341 "sw $t1, 0(%[dst]) \n" 342 "sw $t0, 4(%[dst]) \n" 343 "sw $t3, 8(%[dst]) \n" 344 "sw $t5, 12(%[dst]) \n" 345 "sw $t9, 16(%[dst]) \n" 346 "sw $t7, 20(%[dst]) \n" 347 "bnez %[dst_width], 1b \n" 348 " addiu %[dst], %[dst], 24 \n" 349 ".set pop \n" 350 : [src_ptr] "+r" (src_ptr), 351 [dst] "+r" (dst), 352 [dst_width] "+r" (dst_width) 353 : 354 : "t0", "t1", "t2", "t3", "t4", "t5", 355 "t6","t7", "t8", "t9" 356 ); 357 } 358 359 void ScaleRowDown34_0_Box_DSPR2(const uint8* src_ptr, ptrdiff_t src_stride, 360 uint8* d, int dst_width) { 361 __asm__ __volatile__ ( 362 ".set push \n" 363 ".set noreorder \n" 364 "repl.ph $t3, 3 \n" // 0x00030003 365 366 "1: \n" 367 "lw $t0, 0(%[src_ptr]) \n" // |S3|S2|S1|S0| 368 "lwx $t1, %[src_stride](%[src_ptr]) \n" // |T3|T2|T1|T0| 369 "rotr $t2, $t0, 8 \n" // |S0|S3|S2|S1| 370 "rotr $t6, $t1, 8 \n" // |T0|T3|T2|T1| 371 "muleu_s.ph.qbl $t4, $t2, $t3 \n" // |S0*3|S3*3| 372 "muleu_s.ph.qbl $t5, $t6, $t3 \n" // |T0*3|T3*3| 373 "andi $t0, $t2, 0xFFFF \n" // |0|0|S2|S1| 374 "andi $t1, $t6, 0xFFFF \n" // |0|0|T2|T1| 375 "raddu.w.qb $t0, $t0 \n" 376 "raddu.w.qb $t1, $t1 \n" 377 "shra_r.w $t0, $t0, 1 \n" 378 "shra_r.w $t1, $t1, 1 \n" 379 "preceu.ph.qbr $t2, $t2 \n" // |0|S2|0|S1| 380 "preceu.ph.qbr $t6, $t6 \n" // |0|T2|0|T1| 381 "rotr $t2, $t2, 16 \n" // |0|S1|0|S2| 382 "rotr $t6, $t6, 16 \n" // |0|T1|0|T2| 383 "addu.ph $t2, $t2, $t4 \n" 384 "addu.ph $t6, $t6, $t5 \n" 385 "sll $t5, $t0, 1 \n" 386 "add $t0, $t5, $t0 \n" 387 "shra_r.ph $t2, $t2, 2 \n" 388 "shra_r.ph $t6, $t6, 2 \n" 389 "shll.ph $t4, $t2, 1 \n" 390 "addq.ph $t4, $t4, $t2 \n" 391 "addu $t0, $t0, $t1 \n" 392 "addiu %[src_ptr], %[src_ptr], 4 \n" 393 "shra_r.w $t0, $t0, 2 \n" 394 "addu.ph $t6, $t6, $t4 \n" 395 "shra_r.ph $t6, $t6, 2 \n" 396 "srl $t1, $t6, 16 \n" 397 "addiu %[dst_width], %[dst_width], -3 \n" 398 "sb $t1, 0(%[d]) \n" 399 "sb $t0, 1(%[d]) \n" 400 "sb $t6, 2(%[d]) \n" 401 "bgtz %[dst_width], 1b \n" 402 " addiu %[d], %[d], 3 \n" 403 "3: \n" 404 ".set pop \n" 405 : [src_ptr] "+r" (src_ptr), 406 [src_stride] "+r" (src_stride), 407 [d] "+r" (d), 408 [dst_width] "+r" (dst_width) 409 : 410 : "t0", "t1", "t2", "t3", 411 "t4", "t5", "t6" 412 ); 413 } 414 415 void ScaleRowDown34_1_Box_DSPR2(const uint8* src_ptr, ptrdiff_t src_stride, 416 uint8* d, int dst_width) { 417 __asm__ __volatile__ ( 418 ".set push \n" 419 ".set noreorder \n" 420 "repl.ph $t2, 3 \n" // 0x00030003 421 422 "1: \n" 423 "lw $t0, 0(%[src_ptr]) \n" // |S3|S2|S1|S0| 424 "lwx $t1, %[src_stride](%[src_ptr]) \n" // |T3|T2|T1|T0| 425 "rotr $t4, $t0, 8 \n" // |S0|S3|S2|S1| 426 "rotr $t6, $t1, 8 \n" // |T0|T3|T2|T1| 427 "muleu_s.ph.qbl $t3, $t4, $t2 \n" // |S0*3|S3*3| 428 "muleu_s.ph.qbl $t5, $t6, $t2 \n" // |T0*3|T3*3| 429 "andi $t0, $t4, 0xFFFF \n" // |0|0|S2|S1| 430 "andi $t1, $t6, 0xFFFF \n" // |0|0|T2|T1| 431 "raddu.w.qb $t0, $t0 \n" 432 "raddu.w.qb $t1, $t1 \n" 433 "shra_r.w $t0, $t0, 1 \n" 434 "shra_r.w $t1, $t1, 1 \n" 435 "preceu.ph.qbr $t4, $t4 \n" // |0|S2|0|S1| 436 "preceu.ph.qbr $t6, $t6 \n" // |0|T2|0|T1| 437 "rotr $t4, $t4, 16 \n" // |0|S1|0|S2| 438 "rotr $t6, $t6, 16 \n" // |0|T1|0|T2| 439 "addu.ph $t4, $t4, $t3 \n" 440 "addu.ph $t6, $t6, $t5 \n" 441 "shra_r.ph $t6, $t6, 2 \n" 442 "shra_r.ph $t4, $t4, 2 \n" 443 "addu.ph $t6, $t6, $t4 \n" 444 "addiu %[src_ptr], %[src_ptr], 4 \n" 445 "shra_r.ph $t6, $t6, 1 \n" 446 "addu $t0, $t0, $t1 \n" 447 "addiu %[dst_width], %[dst_width], -3 \n" 448 "shra_r.w $t0, $t0, 1 \n" 449 "srl $t1, $t6, 16 \n" 450 "sb $t1, 0(%[d]) \n" 451 "sb $t0, 1(%[d]) \n" 452 "sb $t6, 2(%[d]) \n" 453 "bgtz %[dst_width], 1b \n" 454 " addiu %[d], %[d], 3 \n" 455 "3: \n" 456 ".set pop \n" 457 : [src_ptr] "+r" (src_ptr), 458 [src_stride] "+r" (src_stride), 459 [d] "+r" (d), 460 [dst_width] "+r" (dst_width) 461 : 462 : "t0", "t1", "t2", "t3", 463 "t4", "t5", "t6" 464 ); 465 } 466 467 void ScaleRowDown38_DSPR2(const uint8* src_ptr, ptrdiff_t src_stride, 468 uint8* dst, int dst_width) { 469 __asm__ __volatile__ ( 470 ".set push \n" 471 ".set noreorder \n" 472 473 "1: \n" 474 "lw $t0, 0(%[src_ptr]) \n" // |3|2|1|0| 475 "lw $t1, 4(%[src_ptr]) \n" // |7|6|5|4| 476 "lw $t2, 8(%[src_ptr]) \n" // |11|10|9|8| 477 "lw $t3, 12(%[src_ptr]) \n" // |15|14|13|12| 478 "lw $t4, 16(%[src_ptr]) \n" // |19|18|17|16| 479 "lw $t5, 20(%[src_ptr]) \n" // |23|22|21|20| 480 "lw $t6, 24(%[src_ptr]) \n" // |27|26|25|24| 481 "lw $t7, 28(%[src_ptr]) \n" // |31|30|29|28| 482 "wsbh $t0, $t0 \n" // |2|3|0|1| 483 "wsbh $t6, $t6 \n" // |26|27|24|25| 484 "srl $t0, $t0, 8 \n" // |X|2|3|0| 485 "srl $t3, $t3, 16 \n" // |X|X|15|14| 486 "srl $t5, $t5, 16 \n" // |X|X|23|22| 487 "srl $t7, $t7, 16 \n" // |X|X|31|30| 488 "ins $t1, $t2, 24, 8 \n" // |8|6|5|4| 489 "ins $t6, $t5, 0, 8 \n" // |26|27|24|22| 490 "ins $t1, $t0, 0, 16 \n" // |8|6|3|0| 491 "ins $t6, $t7, 24, 8 \n" // |30|27|24|22| 492 "prepend $t2, $t3, 24 \n" // |X|15|14|11| 493 "ins $t4, $t4, 16, 8 \n" // |19|16|17|X| 494 "ins $t4, $t2, 0, 16 \n" // |19|16|14|11| 495 "addiu %[src_ptr], %[src_ptr], 32 \n" 496 "addiu %[dst_width], %[dst_width], -12 \n" 497 "addiu $t8,%[dst_width], -12 \n" 498 "sw $t1, 0(%[dst]) \n" 499 "sw $t4, 4(%[dst]) \n" 500 "sw $t6, 8(%[dst]) \n" 501 "bgez $t8, 1b \n" 502 " addiu %[dst], %[dst], 12 \n" 503 ".set pop \n" 504 : [src_ptr] "+r" (src_ptr), 505 [dst] "+r" (dst), 506 [dst_width] "+r" (dst_width) 507 : 508 : "t0", "t1", "t2", "t3", "t4", 509 "t5", "t6", "t7", "t8" 510 ); 511 } 512 513 void ScaleRowDown38_2_Box_DSPR2(const uint8* src_ptr, ptrdiff_t src_stride, 514 uint8* dst_ptr, int dst_width) { 515 intptr_t stride = src_stride; 516 const uint8* t = src_ptr + stride; 517 const int c = 0x2AAA; 518 519 __asm__ __volatile__ ( 520 ".set push \n" 521 ".set noreorder \n" 522 523 "1: \n" 524 "lw $t0, 0(%[src_ptr]) \n" // |S3|S2|S1|S0| 525 "lw $t1, 4(%[src_ptr]) \n" // |S7|S6|S5|S4| 526 "lw $t2, 0(%[t]) \n" // |T3|T2|T1|T0| 527 "lw $t3, 4(%[t]) \n" // |T7|T6|T5|T4| 528 "rotr $t1, $t1, 16 \n" // |S5|S4|S7|S6| 529 "packrl.ph $t4, $t1, $t3 \n" // |S7|S6|T7|T6| 530 "packrl.ph $t5, $t3, $t1 \n" // |T5|T4|S5|S4| 531 "raddu.w.qb $t4, $t4 \n" // S7+S6+T7+T6 532 "raddu.w.qb $t5, $t5 \n" // T5+T4+S5+S4 533 "precrq.qb.ph $t6, $t0, $t2 \n" // |S3|S1|T3|T1| 534 "precrq.qb.ph $t6, $t6, $t6 \n" // |S3|T3|S3|T3| 535 "srl $t4, $t4, 2 \n" // t4 / 4 536 "srl $t6, $t6, 16 \n" // |0|0|S3|T3| 537 "raddu.w.qb $t6, $t6 \n" // 0+0+S3+T3 538 "addu $t6, $t5, $t6 \n" 539 "mul $t6, $t6, %[c] \n" // t6 * 0x2AAA 540 "sll $t0, $t0, 8 \n" // |S2|S1|S0|0| 541 "sll $t2, $t2, 8 \n" // |T2|T1|T0|0| 542 "raddu.w.qb $t0, $t0 \n" // S2+S1+S0+0 543 "raddu.w.qb $t2, $t2 \n" // T2+T1+T0+0 544 "addu $t0, $t0, $t2 \n" 545 "mul $t0, $t0, %[c] \n" // t0 * 0x2AAA 546 "addiu %[src_ptr], %[src_ptr], 8 \n" 547 "addiu %[t], %[t], 8 \n" 548 "addiu %[dst_width], %[dst_width], -3 \n" 549 "addiu %[dst_ptr], %[dst_ptr], 3 \n" 550 "srl $t6, $t6, 16 \n" 551 "srl $t0, $t0, 16 \n" 552 "sb $t4, -1(%[dst_ptr]) \n" 553 "sb $t6, -2(%[dst_ptr]) \n" 554 "bgtz %[dst_width], 1b \n" 555 " sb $t0, -3(%[dst_ptr]) \n" 556 ".set pop \n" 557 : [src_ptr] "+r" (src_ptr), 558 [dst_ptr] "+r" (dst_ptr), 559 [t] "+r" (t), 560 [dst_width] "+r" (dst_width) 561 : [c] "r" (c) 562 : "t0", "t1", "t2", "t3", "t4", "t5", "t6" 563 ); 564 } 565 566 void ScaleRowDown38_3_Box_DSPR2(const uint8* src_ptr, 567 ptrdiff_t src_stride, 568 uint8* dst_ptr, int dst_width) { 569 intptr_t stride = src_stride; 570 const uint8* s1 = src_ptr + stride; 571 stride += stride; 572 const uint8* s2 = src_ptr + stride; 573 const int c1 = 0x1C71; 574 const int c2 = 0x2AAA; 575 576 __asm__ __volatile__ ( 577 ".set push \n" 578 ".set noreorder \n" 579 580 "1: \n" 581 "lw $t0, 0(%[src_ptr]) \n" // |S3|S2|S1|S0| 582 "lw $t1, 4(%[src_ptr]) \n" // |S7|S6|S5|S4| 583 "lw $t2, 0(%[s1]) \n" // |T3|T2|T1|T0| 584 "lw $t3, 4(%[s1]) \n" // |T7|T6|T5|T4| 585 "lw $t4, 0(%[s2]) \n" // |R3|R2|R1|R0| 586 "lw $t5, 4(%[s2]) \n" // |R7|R6|R5|R4| 587 "rotr $t1, $t1, 16 \n" // |S5|S4|S7|S6| 588 "packrl.ph $t6, $t1, $t3 \n" // |S7|S6|T7|T6| 589 "raddu.w.qb $t6, $t6 \n" // S7+S6+T7+T6 590 "packrl.ph $t7, $t3, $t1 \n" // |T5|T4|S5|S4| 591 "raddu.w.qb $t7, $t7 \n" // T5+T4+S5+S4 592 "sll $t8, $t5, 16 \n" // |R5|R4|0|0| 593 "raddu.w.qb $t8, $t8 \n" // R5+R4 594 "addu $t7, $t7, $t8 \n" 595 "srl $t8, $t5, 16 \n" // |0|0|R7|R6| 596 "raddu.w.qb $t8, $t8 \n" // R7 + R6 597 "addu $t6, $t6, $t8 \n" 598 "mul $t6, $t6, %[c2] \n" // t6 * 0x2AAA 599 "precrq.qb.ph $t8, $t0, $t2 \n" // |S3|S1|T3|T1| 600 "precrq.qb.ph $t8, $t8, $t4 \n" // |S3|T3|R3|R1| 601 "srl $t8, $t8, 8 \n" // |0|S3|T3|R3| 602 "raddu.w.qb $t8, $t8 \n" // S3 + T3 + R3 603 "addu $t7, $t7, $t8 \n" 604 "mul $t7, $t7, %[c1] \n" // t7 * 0x1C71 605 "sll $t0, $t0, 8 \n" // |S2|S1|S0|0| 606 "sll $t2, $t2, 8 \n" // |T2|T1|T0|0| 607 "sll $t4, $t4, 8 \n" // |R2|R1|R0|0| 608 "raddu.w.qb $t0, $t0 \n" 609 "raddu.w.qb $t2, $t2 \n" 610 "raddu.w.qb $t4, $t4 \n" 611 "addu $t0, $t0, $t2 \n" 612 "addu $t0, $t0, $t4 \n" 613 "mul $t0, $t0, %[c1] \n" // t0 * 0x1C71 614 "addiu %[src_ptr], %[src_ptr], 8 \n" 615 "addiu %[s1], %[s1], 8 \n" 616 "addiu %[s2], %[s2], 8 \n" 617 "addiu %[dst_width], %[dst_width], -3 \n" 618 "addiu %[dst_ptr], %[dst_ptr], 3 \n" 619 "srl $t6, $t6, 16 \n" 620 "srl $t7, $t7, 16 \n" 621 "srl $t0, $t0, 16 \n" 622 "sb $t6, -1(%[dst_ptr]) \n" 623 "sb $t7, -2(%[dst_ptr]) \n" 624 "bgtz %[dst_width], 1b \n" 625 " sb $t0, -3(%[dst_ptr]) \n" 626 ".set pop \n" 627 : [src_ptr] "+r" (src_ptr), 628 [dst_ptr] "+r" (dst_ptr), 629 [s1] "+r" (s1), 630 [s2] "+r" (s2), 631 [dst_width] "+r" (dst_width) 632 : [c1] "r" (c1), [c2] "r" (c2) 633 : "t0", "t1", "t2", "t3", "t4", 634 "t5", "t6", "t7", "t8" 635 ); 636 } 637 638 #endif // defined(__mips_dsp) && (__mips_dsp_rev >= 2) 639 640 #ifdef __cplusplus 641 } // extern "C" 642 } // namespace libyuv 643 #endif 644 645
