1 // Copyright 2016 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 // MSA version of YUV to RGB upsampling functions. 11 // 12 // Author: Prashant Patil (prashant.patil (at) imgtec.com) 13 14 #include <string.h> 15 #include "./dsp.h" 16 17 #if defined(WEBP_USE_MSA) 18 19 #include "./msa_macro.h" 20 #include "./yuv.h" 21 22 #ifdef FANCY_UPSAMPLING 23 24 #define ILVR_UW2(in, out0, out1) do { \ 25 const v8i16 t0 = (v8i16)__msa_ilvr_b((v16i8)zero, (v16i8)in); \ 26 out0 = (v4u32)__msa_ilvr_h((v8i16)zero, t0); \ 27 out1 = (v4u32)__msa_ilvl_h((v8i16)zero, t0); \ 28 } while (0) 29 30 #define ILVRL_UW4(in, out0, out1, out2, out3) do { \ 31 v16u8 t0, t1; \ 32 ILVRL_B2_UB(zero, in, t0, t1); \ 33 ILVRL_H2_UW(zero, t0, out0, out1); \ 34 ILVRL_H2_UW(zero, t1, out2, out3); \ 35 } while (0) 36 37 #define MULTHI_16(in0, in1, in2, in3, cnst, out0, out1) do { \ 38 const v4i32 const0 = (v4i32)__msa_fill_w(cnst * 256); \ 39 v4u32 temp0, temp1, temp2, temp3; \ 40 MUL4(in0, const0, in1, const0, in2, const0, in3, const0, \ 41 temp0, temp1, temp2, temp3); \ 42 PCKOD_H2_UH(temp1, temp0, temp3, temp2, out0, out1); \ 43 } while (0) 44 45 #define MULTHI_8(in0, in1, cnst, out0) do { \ 46 const v4i32 const0 = (v4i32)__msa_fill_w(cnst * 256); \ 47 v4u32 temp0, temp1; \ 48 MUL2(in0, const0, in1, const0, temp0, temp1); \ 49 out0 = (v8u16)__msa_pckod_h((v8i16)temp1, (v8i16)temp0); \ 50 } while (0) 51 52 #define CALC_R16(y0, y1, v0, v1, dst) do { \ 53 const v8i16 const_a = (v8i16)__msa_fill_h(14234); \ 54 const v8i16 a0 = __msa_adds_s_h((v8i16)y0, (v8i16)v0); \ 55 const v8i16 a1 = __msa_adds_s_h((v8i16)y1, (v8i16)v1); \ 56 v8i16 b0 = __msa_subs_s_h(a0, const_a); \ 57 v8i16 b1 = __msa_subs_s_h(a1, const_a); \ 58 SRAI_H2_SH(b0, b1, 6); \ 59 CLIP_SH2_0_255(b0, b1); \ 60 dst = (v16u8)__msa_pckev_b((v16i8)b1, (v16i8)b0); \ 61 } while (0) 62 63 #define CALC_R8(y0, v0, dst) do { \ 64 const v8i16 const_a = (v8i16)__msa_fill_h(14234); \ 65 const v8i16 a0 = __msa_adds_s_h((v8i16)y0, (v8i16)v0); \ 66 v8i16 b0 = __msa_subs_s_h(a0, const_a); \ 67 b0 = SRAI_H(b0, 6); \ 68 CLIP_SH_0_255(b0); \ 69 dst = (v16u8)__msa_pckev_b((v16i8)b0, (v16i8)b0); \ 70 } while (0) 71 72 #define CALC_G16(y0, y1, u0, u1, v0, v1, dst) do { \ 73 const v8i16 const_a = (v8i16)__msa_fill_h(8708); \ 74 v8i16 a0 = __msa_subs_s_h((v8i16)y0, (v8i16)u0); \ 75 v8i16 a1 = __msa_subs_s_h((v8i16)y1, (v8i16)u1); \ 76 const v8i16 b0 = __msa_subs_s_h(a0, (v8i16)v0); \ 77 const v8i16 b1 = __msa_subs_s_h(a1, (v8i16)v1); \ 78 a0 = __msa_adds_s_h(b0, const_a); \ 79 a1 = __msa_adds_s_h(b1, const_a); \ 80 SRAI_H2_SH(a0, a1, 6); \ 81 CLIP_SH2_0_255(a0, a1); \ 82 dst = (v16u8)__msa_pckev_b((v16i8)a1, (v16i8)a0); \ 83 } while (0) 84 85 #define CALC_G8(y0, u0, v0, dst) do { \ 86 const v8i16 const_a = (v8i16)__msa_fill_h(8708); \ 87 v8i16 a0 = __msa_subs_s_h((v8i16)y0, (v8i16)u0); \ 88 const v8i16 b0 = __msa_subs_s_h(a0, (v8i16)v0); \ 89 a0 = __msa_adds_s_h(b0, const_a); \ 90 a0 = SRAI_H(a0, 6); \ 91 CLIP_SH_0_255(a0); \ 92 dst = (v16u8)__msa_pckev_b((v16i8)a0, (v16i8)a0); \ 93 } while (0) 94 95 #define CALC_B16(y0, y1, u0, u1, dst) do { \ 96 const v8u16 const_a = (v8u16)__msa_fill_h(17685); \ 97 const v8u16 a0 = __msa_adds_u_h((v8u16)y0, u0); \ 98 const v8u16 a1 = __msa_adds_u_h((v8u16)y1, u1); \ 99 v8u16 b0 = __msa_subs_u_h(a0, const_a); \ 100 v8u16 b1 = __msa_subs_u_h(a1, const_a); \ 101 SRAI_H2_UH(b0, b1, 6); \ 102 CLIP_UH2_0_255(b0, b1); \ 103 dst = (v16u8)__msa_pckev_b((v16i8)b1, (v16i8)b0); \ 104 } while (0) 105 106 #define CALC_B8(y0, u0, dst) do { \ 107 const v8u16 const_a = (v8u16)__msa_fill_h(17685); \ 108 const v8u16 a0 = __msa_adds_u_h((v8u16)y0, u0); \ 109 v8u16 b0 = __msa_subs_u_h(a0, const_a); \ 110 b0 = SRAI_H(b0, 6); \ 111 CLIP_UH_0_255(b0); \ 112 dst = (v16u8)__msa_pckev_b((v16i8)b0, (v16i8)b0); \ 113 } while (0) 114 115 #define CALC_RGB16(y, u, v, R, G, B) do { \ 116 const v16u8 zero = { 0 }; \ 117 v8u16 y0, y1, u0, u1, v0, v1; \ 118 v4u32 p0, p1, p2, p3; \ 119 const v16u8 in_y = LD_UB(y); \ 120 const v16u8 in_u = LD_UB(u); \ 121 const v16u8 in_v = LD_UB(v); \ 122 ILVRL_UW4(in_y, p0, p1, p2, p3); \ 123 MULTHI_16(p0, p1, p2, p3, 19077, y0, y1); \ 124 ILVRL_UW4(in_v, p0, p1, p2, p3); \ 125 MULTHI_16(p0, p1, p2, p3, 26149, v0, v1); \ 126 CALC_R16(y0, y1, v0, v1, R); \ 127 MULTHI_16(p0, p1, p2, p3, 13320, v0, v1); \ 128 ILVRL_UW4(in_u, p0, p1, p2, p3); \ 129 MULTHI_16(p0, p1, p2, p3, 6419, u0, u1); \ 130 CALC_G16(y0, y1, u0, u1, v0, v1, G); \ 131 MULTHI_16(p0, p1, p2, p3, 33050, u0, u1); \ 132 CALC_B16(y0, y1, u0, u1, B); \ 133 } while (0) 134 135 #define CALC_RGB8(y, u, v, R, G, B) do { \ 136 const v16u8 zero = { 0 }; \ 137 v8u16 y0, u0, v0; \ 138 v4u32 p0, p1; \ 139 const v16u8 in_y = LD_UB(y); \ 140 const v16u8 in_u = LD_UB(u); \ 141 const v16u8 in_v = LD_UB(v); \ 142 ILVR_UW2(in_y, p0, p1); \ 143 MULTHI_8(p0, p1, 19077, y0); \ 144 ILVR_UW2(in_v, p0, p1); \ 145 MULTHI_8(p0, p1, 26149, v0); \ 146 CALC_R8(y0, v0, R); \ 147 MULTHI_8(p0, p1, 13320, v0); \ 148 ILVR_UW2(in_u, p0, p1); \ 149 MULTHI_8(p0, p1, 6419, u0); \ 150 CALC_G8(y0, u0, v0, G); \ 151 MULTHI_8(p0, p1, 33050, u0); \ 152 CALC_B8(y0, u0, B); \ 153 } while (0) 154 155 #define STORE16_3(a0, a1, a2, dst) do { \ 156 const v16u8 mask0 = { 0, 1, 16, 2, 3, 17, 4, 5, 18, 6, 7, 19, \ 157 8, 9, 20, 10 }; \ 158 const v16u8 mask1 = { 0, 21, 1, 2, 22, 3, 4, 23, 5, 6, 24, 7, \ 159 8, 25, 9, 10 }; \ 160 const v16u8 mask2 = { 26, 0, 1, 27, 2, 3, 28, 4, 5, 29, 6, 7, \ 161 30, 8, 9, 31 }; \ 162 v16u8 out0, out1, out2, tmp0, tmp1, tmp2; \ 163 ILVRL_B2_UB(a1, a0, tmp0, tmp1); \ 164 out0 = VSHF_UB(tmp0, a2, mask0); \ 165 tmp2 = SLDI_UB(tmp1, tmp0, 11); \ 166 out1 = VSHF_UB(tmp2, a2, mask1); \ 167 tmp2 = SLDI_UB(tmp1, tmp1, 6); \ 168 out2 = VSHF_UB(tmp2, a2, mask2); \ 169 ST_UB(out0, dst + 0); \ 170 ST_UB(out1, dst + 16); \ 171 ST_UB(out2, dst + 32); \ 172 } while (0) 173 174 #define STORE8_3(a0, a1, a2, dst) do { \ 175 int64_t out_m; \ 176 const v16u8 mask0 = { 0, 1, 16, 2, 3, 17, 4, 5, 18, 6, 7, 19, \ 177 8, 9, 20, 10 }; \ 178 const v16u8 mask1 = { 11, 21, 12, 13, 22, 14, 15, 23, \ 179 255, 255, 255, 255, 255, 255, 255, 255 }; \ 180 const v16u8 tmp0 = (v16u8)__msa_ilvr_b((v16i8)a1, (v16i8)a0); \ 181 v16u8 out0, out1; \ 182 VSHF_B2_UB(tmp0, a2, tmp0, a2, mask0, mask1, out0, out1); \ 183 ST_UB(out0, dst); \ 184 out_m = __msa_copy_s_d((v2i64)out1, 0); \ 185 SD(out_m, dst + 16); \ 186 } while (0) 187 188 #define STORE16_4(a0, a1, a2, a3, dst) do { \ 189 v16u8 tmp0, tmp1, tmp2, tmp3; \ 190 v16u8 out0, out1, out2, out3; \ 191 ILVRL_B2_UB(a1, a0, tmp0, tmp1); \ 192 ILVRL_B2_UB(a3, a2, tmp2, tmp3); \ 193 ILVRL_H2_UB(tmp2, tmp0, out0, out1); \ 194 ILVRL_H2_UB(tmp3, tmp1, out2, out3); \ 195 ST_UB(out0, dst + 0); \ 196 ST_UB(out1, dst + 16); \ 197 ST_UB(out2, dst + 32); \ 198 ST_UB(out3, dst + 48); \ 199 } while (0) 200 201 #define STORE8_4(a0, a1, a2, a3, dst) do { \ 202 v16u8 tmp0, tmp1, tmp2, tmp3; \ 203 ILVR_B2_UB(a1, a0, a3, a2, tmp0, tmp1); \ 204 ILVRL_H2_UB(tmp1, tmp0, tmp2, tmp3); \ 205 ST_UB(tmp2, dst + 0); \ 206 ST_UB(tmp3, dst + 16); \ 207 } while (0) 208 209 #define STORE2_16(a0, a1, dst) do { \ 210 v16u8 out0, out1; \ 211 ILVRL_B2_UB(a1, a0, out0, out1); \ 212 ST_UB(out0, dst + 0); \ 213 ST_UB(out1, dst + 16); \ 214 } while (0) 215 216 #define STORE2_8(a0, a1, dst) do { \ 217 const v16u8 out0 = (v16u8)__msa_ilvr_b((v16i8)a1, (v16i8)a0); \ 218 ST_UB(out0, dst); \ 219 } while (0) 220 221 #define CALC_RGBA4444(y, u, v, out0, out1, N, dst) do { \ 222 CALC_RGB##N(y, u, v, R, G, B); \ 223 tmp0 = ANDI_B(R, 0xf0); \ 224 tmp1 = SRAI_B(G, 4); \ 225 RG = tmp0 | tmp1; \ 226 tmp0 = ANDI_B(B, 0xf0); \ 227 BA = ORI_B(tmp0, 0x0f); \ 228 STORE2_##N(out0, out1, dst); \ 229 } while (0) 230 231 #define CALC_RGB565(y, u, v, out0, out1, N, dst) do { \ 232 CALC_RGB##N(y, u, v, R, G, B); \ 233 tmp0 = ANDI_B(R, 0xf8); \ 234 tmp1 = SRAI_B(G, 5); \ 235 RG = tmp0 | tmp1; \ 236 tmp0 = SLLI_B(G, 3); \ 237 tmp1 = ANDI_B(tmp0, 0xe0); \ 238 tmp0 = SRAI_B(B, 3); \ 239 GB = tmp0 | tmp1; \ 240 STORE2_##N(out0, out1, dst); \ 241 } while (0) 242 243 static WEBP_INLINE int Clip8(int v) { 244 return v < 0 ? 0 : v > 255 ? 255 : v; 245 } 246 247 static void YuvToRgb(int y, int u, int v, uint8_t* const rgb) { 248 const int y1 = MultHi(y, 19077); 249 const int r1 = y1 + MultHi(v, 26149) - 14234; 250 const int g1 = y1 - MultHi(u, 6419) - MultHi(v, 13320) + 8708; 251 const int b1 = y1 + MultHi(u, 33050) - 17685; 252 rgb[0] = Clip8(r1 >> 6); 253 rgb[1] = Clip8(g1 >> 6); 254 rgb[2] = Clip8(b1 >> 6); 255 } 256 257 static void YuvToBgr(int y, int u, int v, uint8_t* const bgr) { 258 const int y1 = MultHi(y, 19077); 259 const int r1 = y1 + MultHi(v, 26149) - 14234; 260 const int g1 = y1 - MultHi(u, 6419) - MultHi(v, 13320) + 8708; 261 const int b1 = y1 + MultHi(u, 33050) - 17685; 262 bgr[0] = Clip8(b1 >> 6); 263 bgr[1] = Clip8(g1 >> 6); 264 bgr[2] = Clip8(r1 >> 6); 265 } 266 267 static void YuvToRgb565(int y, int u, int v, uint8_t* const rgb) { 268 const int y1 = MultHi(y, 19077); 269 const int r1 = y1 + MultHi(v, 26149) - 14234; 270 const int g1 = y1 - MultHi(u, 6419) - MultHi(v, 13320) + 8708; 271 const int b1 = y1 + MultHi(u, 33050) - 17685; 272 const int r = Clip8(r1 >> 6); 273 const int g = Clip8(g1 >> 6); 274 const int b = Clip8(b1 >> 6); 275 const int rg = (r & 0xf8) | (g >> 5); 276 const int gb = ((g << 3) & 0xe0) | (b >> 3); 277 #ifdef WEBP_SWAP_16BIT_CSP 278 rgb[0] = gb; 279 rgb[1] = rg; 280 #else 281 rgb[0] = rg; 282 rgb[1] = gb; 283 #endif 284 } 285 286 static void YuvToRgba4444(int y, int u, int v, uint8_t* const argb) { 287 const int y1 = MultHi(y, 19077); 288 const int r1 = y1 + MultHi(v, 26149) - 14234; 289 const int g1 = y1 - MultHi(u, 6419) - MultHi(v, 13320) + 8708; 290 const int b1 = y1 + MultHi(u, 33050) - 17685; 291 const int r = Clip8(r1 >> 6); 292 const int g = Clip8(g1 >> 6); 293 const int b = Clip8(b1 >> 6); 294 const int rg = (r & 0xf0) | (g >> 4); 295 const int ba = (b & 0xf0) | 0x0f; // overwrite the lower 4 bits 296 #ifdef WEBP_SWAP_16BIT_CSP 297 argb[0] = ba; 298 argb[1] = rg; 299 #else 300 argb[0] = rg; 301 argb[1] = ba; 302 #endif 303 } 304 305 static void YuvToArgb(uint8_t y, uint8_t u, uint8_t v, uint8_t* const argb) { 306 argb[0] = 0xff; 307 YuvToRgb(y, u, v, argb + 1); 308 } 309 310 static void YuvToBgra(uint8_t y, uint8_t u, uint8_t v, uint8_t* const bgra) { 311 YuvToBgr(y, u, v, bgra); 312 bgra[3] = 0xff; 313 } 314 315 static void YuvToRgba(uint8_t y, uint8_t u, uint8_t v, uint8_t* const rgba) { 316 YuvToRgb(y, u, v, rgba); 317 rgba[3] = 0xff; 318 } 319 320 static void YuvToRgbLine(const uint8_t* y, const uint8_t* u, 321 const uint8_t* v, uint8_t* dst, int length) { 322 v16u8 R, G, B; 323 while (length >= 16) { 324 CALC_RGB16(y, u, v, R, G, B); 325 STORE16_3(R, G, B, dst); 326 y += 16; 327 u += 16; 328 v += 16; 329 dst += 16 * 3; 330 length -= 16; 331 } 332 if (length > 8) { 333 uint8_t temp[3 * 16] = { 0 }; 334 memcpy(temp, y, length * sizeof(*temp)); 335 CALC_RGB16(temp, u, v, R, G, B); 336 STORE16_3(R, G, B, temp); 337 memcpy(dst, temp, length * 3 * sizeof(*dst)); 338 } else if (length > 0) { 339 uint8_t temp[3 * 8] = { 0 }; 340 memcpy(temp, y, length * sizeof(*temp)); 341 CALC_RGB8(temp, u, v, R, G, B); 342 STORE8_3(R, G, B, temp); 343 memcpy(dst, temp, length * 3 * sizeof(*dst)); 344 } 345 } 346 347 static void YuvToBgrLine(const uint8_t* y, const uint8_t* u, 348 const uint8_t* v, uint8_t* dst, int length) { 349 v16u8 R, G, B; 350 while (length >= 16) { 351 CALC_RGB16(y, u, v, R, G, B); 352 STORE16_3(B, G, R, dst); 353 y += 16; 354 u += 16; 355 v += 16; 356 dst += 16 * 3; 357 length -= 16; 358 } 359 if (length > 8) { 360 uint8_t temp[3 * 16] = { 0 }; 361 memcpy(temp, y, length * sizeof(*temp)); 362 CALC_RGB16(temp, u, v, R, G, B); 363 STORE16_3(B, G, R, temp); 364 memcpy(dst, temp, length * 3 * sizeof(*dst)); 365 } else if (length > 0) { 366 uint8_t temp[3 * 8] = { 0 }; 367 memcpy(temp, y, length * sizeof(*temp)); 368 CALC_RGB8(temp, u, v, R, G, B); 369 STORE8_3(B, G, R, temp); 370 memcpy(dst, temp, length * 3 * sizeof(*dst)); 371 } 372 } 373 374 static void YuvToRgbaLine(const uint8_t* y, const uint8_t* u, 375 const uint8_t* v, uint8_t* dst, int length) { 376 v16u8 R, G, B; 377 const v16u8 A = (v16u8)__msa_ldi_b(0xff); 378 while (length >= 16) { 379 CALC_RGB16(y, u, v, R, G, B); 380 STORE16_4(R, G, B, A, dst); 381 y += 16; 382 u += 16; 383 v += 16; 384 dst += 16 * 4; 385 length -= 16; 386 } 387 if (length > 8) { 388 uint8_t temp[4 * 16] = { 0 }; 389 memcpy(temp, y, length * sizeof(*temp)); 390 CALC_RGB16(&temp[0], u, v, R, G, B); 391 STORE16_4(R, G, B, A, temp); 392 memcpy(dst, temp, length * 4 * sizeof(*dst)); 393 } else if (length > 0) { 394 uint8_t temp[4 * 8] = { 0 }; 395 memcpy(temp, y, length * sizeof(*temp)); 396 CALC_RGB8(temp, u, v, R, G, B); 397 STORE8_4(R, G, B, A, temp); 398 memcpy(dst, temp, length * 4 * sizeof(*dst)); 399 } 400 } 401 402 static void YuvToBgraLine(const uint8_t* y, const uint8_t* u, 403 const uint8_t* v, uint8_t* dst, int length) { 404 v16u8 R, G, B; 405 const v16u8 A = (v16u8)__msa_ldi_b(0xff); 406 while (length >= 16) { 407 CALC_RGB16(y, u, v, R, G, B); 408 STORE16_4(B, G, R, A, dst); 409 y += 16; 410 u += 16; 411 v += 16; 412 dst += 16 * 4; 413 length -= 16; 414 } 415 if (length > 8) { 416 uint8_t temp[4 * 16] = { 0 }; 417 memcpy(temp, y, length * sizeof(*temp)); 418 CALC_RGB16(temp, u, v, R, G, B); 419 STORE16_4(B, G, R, A, temp); 420 memcpy(dst, temp, length * 4 * sizeof(*dst)); 421 } else if (length > 0) { 422 uint8_t temp[4 * 8] = { 0 }; 423 memcpy(temp, y, length * sizeof(*temp)); 424 CALC_RGB8(temp, u, v, R, G, B); 425 STORE8_4(B, G, R, A, temp); 426 memcpy(dst, temp, length * 4 * sizeof(*dst)); 427 } 428 } 429 430 static void YuvToArgbLine(const uint8_t* y, const uint8_t* u, 431 const uint8_t* v, uint8_t* dst, int length) { 432 v16u8 R, G, B; 433 const v16u8 A = (v16u8)__msa_ldi_b(0xff); 434 while (length >= 16) { 435 CALC_RGB16(y, u, v, R, G, B); 436 STORE16_4(A, R, G, B, dst); 437 y += 16; 438 u += 16; 439 v += 16; 440 dst += 16 * 4; 441 length -= 16; 442 } 443 if (length > 8) { 444 uint8_t temp[4 * 16] = { 0 }; 445 memcpy(temp, y, length * sizeof(*temp)); 446 CALC_RGB16(temp, u, v, R, G, B); 447 STORE16_4(A, R, G, B, temp); 448 memcpy(dst, temp, length * 4 * sizeof(*dst)); 449 } else if (length > 0) { 450 uint8_t temp[4 * 8] = { 0 }; 451 memcpy(temp, y, length * sizeof(*temp)); 452 CALC_RGB8(temp, u, v, R, G, B); 453 STORE8_4(A, R, G, B, temp); 454 memcpy(dst, temp, length * 4 * sizeof(*dst)); 455 } 456 } 457 458 static void YuvToRgba4444Line(const uint8_t* y, const uint8_t* u, 459 const uint8_t* v, uint8_t* dst, int length) { 460 v16u8 R, G, B, RG, BA, tmp0, tmp1; 461 while (length >= 16) { 462 #ifdef WEBP_SWAP_16BIT_CSP 463 CALC_RGBA4444(y, u, v, BA, RG, 16, dst); 464 #else 465 CALC_RGBA4444(y, u, v, RG, BA, 16, dst); 466 #endif 467 y += 16; 468 u += 16; 469 v += 16; 470 dst += 16 * 2; 471 length -= 16; 472 } 473 if (length > 8) { 474 uint8_t temp[2 * 16] = { 0 }; 475 memcpy(temp, y, length * sizeof(*temp)); 476 #ifdef WEBP_SWAP_16BIT_CSP 477 CALC_RGBA4444(temp, u, v, BA, RG, 16, temp); 478 #else 479 CALC_RGBA4444(temp, u, v, RG, BA, 16, temp); 480 #endif 481 memcpy(dst, temp, length * 2 * sizeof(*dst)); 482 } else if (length > 0) { 483 uint8_t temp[2 * 8] = { 0 }; 484 memcpy(temp, y, length * sizeof(*temp)); 485 #ifdef WEBP_SWAP_16BIT_CSP 486 CALC_RGBA4444(temp, u, v, BA, RG, 8, temp); 487 #else 488 CALC_RGBA4444(temp, u, v, RG, BA, 8, temp); 489 #endif 490 memcpy(dst, temp, length * 2 * sizeof(*dst)); 491 } 492 } 493 494 static void YuvToRgb565Line(const uint8_t* y, const uint8_t* u, 495 const uint8_t* v, uint8_t* dst, int length) { 496 v16u8 R, G, B, RG, GB, tmp0, tmp1; 497 while (length >= 16) { 498 #ifdef WEBP_SWAP_16BIT_CSP 499 CALC_RGB565(y, u, v, GB, RG, 16, dst); 500 #else 501 CALC_RGB565(y, u, v, RG, GB, 16, dst); 502 #endif 503 y += 16; 504 u += 16; 505 v += 16; 506 dst += 16 * 2; 507 length -= 16; 508 } 509 if (length > 8) { 510 uint8_t temp[2 * 16] = { 0 }; 511 memcpy(temp, y, length * sizeof(*temp)); 512 #ifdef WEBP_SWAP_16BIT_CSP 513 CALC_RGB565(temp, u, v, GB, RG, 16, temp); 514 #else 515 CALC_RGB565(temp, u, v, RG, GB, 16, temp); 516 #endif 517 memcpy(dst, temp, length * 2 * sizeof(*dst)); 518 } else if (length > 0) { 519 uint8_t temp[2 * 8] = { 0 }; 520 memcpy(temp, y, length * sizeof(*temp)); 521 #ifdef WEBP_SWAP_16BIT_CSP 522 CALC_RGB565(temp, u, v, GB, RG, 8, temp); 523 #else 524 CALC_RGB565(temp, u, v, RG, GB, 8, temp); 525 #endif 526 memcpy(dst, temp, length * 2 * sizeof(*dst)); 527 } 528 } 529 530 #define UPSAMPLE_32PIXELS(a, b, c, d) do { \ 531 v16u8 s = __msa_aver_u_b(a, d); \ 532 v16u8 t = __msa_aver_u_b(b, c); \ 533 const v16u8 st = s ^ t; \ 534 v16u8 ad = a ^ d; \ 535 v16u8 bc = b ^ c; \ 536 v16u8 t0 = ad | bc; \ 537 v16u8 t1 = t0 | st; \ 538 v16u8 t2 = ANDI_B(t1, 1); \ 539 v16u8 t3 = __msa_aver_u_b(s, t); \ 540 const v16u8 k = t3 - t2; \ 541 v16u8 diag1, diag2; \ 542 AVER_UB2_UB(t, k, s, k, t0, t1); \ 543 bc = bc & st; \ 544 ad = ad & st; \ 545 t = t ^ k; \ 546 s = s ^ k; \ 547 t2 = bc | t; \ 548 t3 = ad | s; \ 549 t2 = ANDI_B(t2, 1); \ 550 t3 = ANDI_B(t3, 1); \ 551 SUB2(t0, t2, t1, t3, diag1, diag2); \ 552 AVER_UB2_UB(a, diag1, b, diag2, t0, t1); \ 553 ILVRL_B2_UB(t1, t0, a, b); \ 554 if (pbot_y != NULL) { \ 555 AVER_UB2_UB(c, diag2, d, diag1, t0, t1); \ 556 ILVRL_B2_UB(t1, t0, c, d); \ 557 } \ 558 } while (0) 559 560 #define UPSAMPLE_FUNC(FUNC_NAME, FUNC, XSTEP) \ 561 static void FUNC_NAME(const uint8_t* top_y, const uint8_t* bot_y, \ 562 const uint8_t* top_u, const uint8_t* top_v, \ 563 const uint8_t* cur_u, const uint8_t* cur_v, \ 564 uint8_t* top_dst, uint8_t* bot_dst, int len) \ 565 { \ 566 int size = (len - 1) >> 1; \ 567 uint8_t temp_u[64]; \ 568 uint8_t temp_v[64]; \ 569 const uint32_t tl_uv = ((top_u[0]) | ((top_v[0]) << 16)); \ 570 const uint32_t l_uv = ((cur_u[0]) | ((cur_v[0]) << 16)); \ 571 const uint32_t uv0 = (3 * tl_uv + l_uv + 0x00020002u) >> 2; \ 572 const uint8_t* ptop_y = &top_y[1]; \ 573 uint8_t *ptop_dst = top_dst + XSTEP; \ 574 const uint8_t* pbot_y = &bot_y[1]; \ 575 uint8_t *pbot_dst = bot_dst + XSTEP; \ 576 \ 577 FUNC(top_y[0], uv0 & 0xff, (uv0 >> 16), top_dst); \ 578 if (bot_y != NULL) { \ 579 const uint32_t uv1 = (3 * l_uv + tl_uv + 0x00020002u) >> 2; \ 580 FUNC(bot_y[0], uv1 & 0xff, (uv1 >> 16), bot_dst); \ 581 } \ 582 while (size >= 16) { \ 583 v16u8 tu0, tu1, tv0, tv1, cu0, cu1, cv0, cv1; \ 584 LD_UB2(top_u, 1, tu0, tu1); \ 585 LD_UB2(cur_u, 1, cu0, cu1); \ 586 LD_UB2(top_v, 1, tv0, tv1); \ 587 LD_UB2(cur_v, 1, cv0, cv1); \ 588 UPSAMPLE_32PIXELS(tu0, tu1, cu0, cu1); \ 589 UPSAMPLE_32PIXELS(tv0, tv1, cv0, cv1); \ 590 ST_UB4(tu0, tu1, cu0, cu1, &temp_u[0], 16); \ 591 ST_UB4(tv0, tv1, cv0, cv1, &temp_v[0], 16); \ 592 FUNC##Line(ptop_y, &temp_u[ 0], &temp_v[0], ptop_dst, 32); \ 593 if (bot_y != NULL) { \ 594 FUNC##Line(pbot_y, &temp_u[32], &temp_v[32], pbot_dst, 32); \ 595 } \ 596 ptop_y += 32; \ 597 pbot_y += 32; \ 598 ptop_dst += XSTEP * 32; \ 599 pbot_dst += XSTEP * 32; \ 600 top_u += 16; \ 601 top_v += 16; \ 602 cur_u += 16; \ 603 cur_v += 16; \ 604 size -= 16; \ 605 } \ 606 if (size > 0) { \ 607 v16u8 tu0, tu1, tv0, tv1, cu0, cu1, cv0, cv1; \ 608 memcpy(&temp_u[ 0], top_u, 17 * sizeof(uint8_t)); \ 609 memcpy(&temp_u[32], cur_u, 17 * sizeof(uint8_t)); \ 610 memcpy(&temp_v[ 0], top_v, 17 * sizeof(uint8_t)); \ 611 memcpy(&temp_v[32], cur_v, 17 * sizeof(uint8_t)); \ 612 LD_UB2(&temp_u[ 0], 1, tu0, tu1); \ 613 LD_UB2(&temp_u[32], 1, cu0, cu1); \ 614 LD_UB2(&temp_v[ 0], 1, tv0, tv1); \ 615 LD_UB2(&temp_v[32], 1, cv0, cv1); \ 616 UPSAMPLE_32PIXELS(tu0, tu1, cu0, cu1); \ 617 UPSAMPLE_32PIXELS(tv0, tv1, cv0, cv1); \ 618 ST_UB4(tu0, tu1, cu0, cu1, &temp_u[0], 16); \ 619 ST_UB4(tv0, tv1, cv0, cv1, &temp_v[0], 16); \ 620 FUNC##Line(ptop_y, &temp_u[ 0], &temp_v[0], ptop_dst, size * 2); \ 621 if (bot_y != NULL) { \ 622 FUNC##Line(pbot_y, &temp_u[32], &temp_v[32], pbot_dst, size * 2); \ 623 } \ 624 top_u += size; \ 625 top_v += size; \ 626 cur_u += size; \ 627 cur_v += size; \ 628 } \ 629 if (!(len & 1)) { \ 630 const uint32_t t0 = ((top_u[0]) | ((top_v[0]) << 16)); \ 631 const uint32_t c0 = ((cur_u[0]) | ((cur_v[0]) << 16)); \ 632 const uint32_t tmp0 = (3 * t0 + c0 + 0x00020002u) >> 2; \ 633 FUNC(top_y[len - 1], tmp0 & 0xff, (tmp0 >> 16), \ 634 top_dst + (len - 1) * XSTEP); \ 635 if (bot_y != NULL) { \ 636 const uint32_t tmp1 = (3 * c0 + t0 + 0x00020002u) >> 2; \ 637 FUNC(bot_y[len - 1], tmp1 & 0xff, (tmp1 >> 16), \ 638 bot_dst + (len - 1) * XSTEP); \ 639 } \ 640 } \ 641 } 642 643 UPSAMPLE_FUNC(UpsampleRgbLinePair, YuvToRgb, 3) 644 UPSAMPLE_FUNC(UpsampleBgrLinePair, YuvToBgr, 3) 645 UPSAMPLE_FUNC(UpsampleRgbaLinePair, YuvToRgba, 4) 646 UPSAMPLE_FUNC(UpsampleBgraLinePair, YuvToBgra, 4) 647 UPSAMPLE_FUNC(UpsampleArgbLinePair, YuvToArgb, 4) 648 UPSAMPLE_FUNC(UpsampleRgba4444LinePair, YuvToRgba4444, 2) 649 UPSAMPLE_FUNC(UpsampleRgb565LinePair, YuvToRgb565, 2) 650 651 //------------------------------------------------------------------------------ 652 // Entry point 653 654 extern WebPUpsampleLinePairFunc WebPUpsamplers[/* MODE_LAST */]; 655 656 extern void WebPInitUpsamplersMSA(void); 657 658 WEBP_TSAN_IGNORE_FUNCTION void WebPInitUpsamplersMSA(void) { 659 WebPUpsamplers[MODE_RGB] = UpsampleRgbLinePair; 660 WebPUpsamplers[MODE_RGBA] = UpsampleRgbaLinePair; 661 WebPUpsamplers[MODE_BGR] = UpsampleBgrLinePair; 662 WebPUpsamplers[MODE_BGRA] = UpsampleBgraLinePair; 663 WebPUpsamplers[MODE_ARGB] = UpsampleArgbLinePair; 664 WebPUpsamplers[MODE_rgbA] = UpsampleRgbaLinePair; 665 WebPUpsamplers[MODE_bgrA] = UpsampleBgraLinePair; 666 WebPUpsamplers[MODE_Argb] = UpsampleArgbLinePair; 667 WebPUpsamplers[MODE_RGB_565] = UpsampleRgb565LinePair; 668 WebPUpsamplers[MODE_RGBA_4444] = UpsampleRgba4444LinePair; 669 WebPUpsamplers[MODE_rgbA_4444] = UpsampleRgba4444LinePair; 670 } 671 672 #endif // FANCY_UPSAMPLING 673 674 #endif // WEBP_USE_MSA 675 676 #if !(defined(FANCY_UPSAMPLING) && defined(WEBP_USE_MSA)) 677 WEBP_DSP_INIT_STUB(WebPInitUpsamplersMSA) 678 #endif 679
