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 "src/dsp/dsp.h" 16 17 #if defined(WEBP_USE_MSA) 18 19 #include "src/dsp/msa_macro.h" 20 #include "src/dsp/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 #if !defined(WEBP_REDUCE_CSP) 268 static void YuvToRgb565(int y, int u, int v, uint8_t* const rgb) { 269 const int y1 = MultHi(y, 19077); 270 const int r1 = y1 + MultHi(v, 26149) - 14234; 271 const int g1 = y1 - MultHi(u, 6419) - MultHi(v, 13320) + 8708; 272 const int b1 = y1 + MultHi(u, 33050) - 17685; 273 const int r = Clip8(r1 >> 6); 274 const int g = Clip8(g1 >> 6); 275 const int b = Clip8(b1 >> 6); 276 const int rg = (r & 0xf8) | (g >> 5); 277 const int gb = ((g << 3) & 0xe0) | (b >> 3); 278 #if (WEBP_SWAP_16BIT_CSP == 1) 279 rgb[0] = gb; 280 rgb[1] = rg; 281 #else 282 rgb[0] = rg; 283 rgb[1] = gb; 284 #endif 285 } 286 287 static void YuvToRgba4444(int y, int u, int v, uint8_t* const argb) { 288 const int y1 = MultHi(y, 19077); 289 const int r1 = y1 + MultHi(v, 26149) - 14234; 290 const int g1 = y1 - MultHi(u, 6419) - MultHi(v, 13320) + 8708; 291 const int b1 = y1 + MultHi(u, 33050) - 17685; 292 const int r = Clip8(r1 >> 6); 293 const int g = Clip8(g1 >> 6); 294 const int b = Clip8(b1 >> 6); 295 const int rg = (r & 0xf0) | (g >> 4); 296 const int ba = (b & 0xf0) | 0x0f; // overwrite the lower 4 bits 297 #if (WEBP_SWAP_16BIT_CSP == 1) 298 argb[0] = ba; 299 argb[1] = rg; 300 #else 301 argb[0] = rg; 302 argb[1] = ba; 303 #endif 304 } 305 306 static void YuvToArgb(uint8_t y, uint8_t u, uint8_t v, uint8_t* const argb) { 307 argb[0] = 0xff; 308 YuvToRgb(y, u, v, argb + 1); 309 } 310 #endif // WEBP_REDUCE_CSP 311 312 static void YuvToBgra(uint8_t y, uint8_t u, uint8_t v, uint8_t* const bgra) { 313 YuvToBgr(y, u, v, bgra); 314 bgra[3] = 0xff; 315 } 316 317 static void YuvToRgba(uint8_t y, uint8_t u, uint8_t v, uint8_t* const rgba) { 318 YuvToRgb(y, u, v, rgba); 319 rgba[3] = 0xff; 320 } 321 322 #if !defined(WEBP_REDUCE_CSP) 323 static void YuvToRgbLine(const uint8_t* y, const uint8_t* u, 324 const uint8_t* v, uint8_t* dst, int length) { 325 v16u8 R, G, B; 326 while (length >= 16) { 327 CALC_RGB16(y, u, v, R, G, B); 328 STORE16_3(R, G, B, dst); 329 y += 16; 330 u += 16; 331 v += 16; 332 dst += 16 * 3; 333 length -= 16; 334 } 335 if (length > 8) { 336 uint8_t temp[3 * 16] = { 0 }; 337 memcpy(temp, y, length * sizeof(*temp)); 338 CALC_RGB16(temp, u, v, R, G, B); 339 STORE16_3(R, G, B, temp); 340 memcpy(dst, temp, length * 3 * sizeof(*dst)); 341 } else if (length > 0) { 342 uint8_t temp[3 * 8] = { 0 }; 343 memcpy(temp, y, length * sizeof(*temp)); 344 CALC_RGB8(temp, u, v, R, G, B); 345 STORE8_3(R, G, B, temp); 346 memcpy(dst, temp, length * 3 * sizeof(*dst)); 347 } 348 } 349 350 static void YuvToBgrLine(const uint8_t* y, const uint8_t* u, 351 const uint8_t* v, uint8_t* dst, int length) { 352 v16u8 R, G, B; 353 while (length >= 16) { 354 CALC_RGB16(y, u, v, R, G, B); 355 STORE16_3(B, G, R, dst); 356 y += 16; 357 u += 16; 358 v += 16; 359 dst += 16 * 3; 360 length -= 16; 361 } 362 if (length > 8) { 363 uint8_t temp[3 * 16] = { 0 }; 364 memcpy(temp, y, length * sizeof(*temp)); 365 CALC_RGB16(temp, u, v, R, G, B); 366 STORE16_3(B, G, R, temp); 367 memcpy(dst, temp, length * 3 * sizeof(*dst)); 368 } else if (length > 0) { 369 uint8_t temp[3 * 8] = { 0 }; 370 memcpy(temp, y, length * sizeof(*temp)); 371 CALC_RGB8(temp, u, v, R, G, B); 372 STORE8_3(B, G, R, temp); 373 memcpy(dst, temp, length * 3 * sizeof(*dst)); 374 } 375 } 376 #endif // WEBP_REDUCE_CSP 377 378 static void YuvToRgbaLine(const uint8_t* y, const uint8_t* u, 379 const uint8_t* v, uint8_t* dst, int length) { 380 v16u8 R, G, B; 381 const v16u8 A = (v16u8)__msa_ldi_b(ALPHAVAL); 382 while (length >= 16) { 383 CALC_RGB16(y, u, v, R, G, B); 384 STORE16_4(R, G, B, A, dst); 385 y += 16; 386 u += 16; 387 v += 16; 388 dst += 16 * 4; 389 length -= 16; 390 } 391 if (length > 8) { 392 uint8_t temp[4 * 16] = { 0 }; 393 memcpy(temp, y, length * sizeof(*temp)); 394 CALC_RGB16(&temp[0], u, v, R, G, B); 395 STORE16_4(R, G, B, A, temp); 396 memcpy(dst, temp, length * 4 * sizeof(*dst)); 397 } else if (length > 0) { 398 uint8_t temp[4 * 8] = { 0 }; 399 memcpy(temp, y, length * sizeof(*temp)); 400 CALC_RGB8(temp, u, v, R, G, B); 401 STORE8_4(R, G, B, A, temp); 402 memcpy(dst, temp, length * 4 * sizeof(*dst)); 403 } 404 } 405 406 static void YuvToBgraLine(const uint8_t* y, const uint8_t* u, 407 const uint8_t* v, uint8_t* dst, int length) { 408 v16u8 R, G, B; 409 const v16u8 A = (v16u8)__msa_ldi_b(ALPHAVAL); 410 while (length >= 16) { 411 CALC_RGB16(y, u, v, R, G, B); 412 STORE16_4(B, G, R, A, dst); 413 y += 16; 414 u += 16; 415 v += 16; 416 dst += 16 * 4; 417 length -= 16; 418 } 419 if (length > 8) { 420 uint8_t temp[4 * 16] = { 0 }; 421 memcpy(temp, y, length * sizeof(*temp)); 422 CALC_RGB16(temp, u, v, R, G, B); 423 STORE16_4(B, G, R, A, temp); 424 memcpy(dst, temp, length * 4 * sizeof(*dst)); 425 } else if (length > 0) { 426 uint8_t temp[4 * 8] = { 0 }; 427 memcpy(temp, y, length * sizeof(*temp)); 428 CALC_RGB8(temp, u, v, R, G, B); 429 STORE8_4(B, G, R, A, temp); 430 memcpy(dst, temp, length * 4 * sizeof(*dst)); 431 } 432 } 433 434 #if !defined(WEBP_REDUCE_CSP) 435 static void YuvToArgbLine(const uint8_t* y, const uint8_t* u, 436 const uint8_t* v, uint8_t* dst, int length) { 437 v16u8 R, G, B; 438 const v16u8 A = (v16u8)__msa_ldi_b(ALPHAVAL); 439 while (length >= 16) { 440 CALC_RGB16(y, u, v, R, G, B); 441 STORE16_4(A, R, G, B, dst); 442 y += 16; 443 u += 16; 444 v += 16; 445 dst += 16 * 4; 446 length -= 16; 447 } 448 if (length > 8) { 449 uint8_t temp[4 * 16] = { 0 }; 450 memcpy(temp, y, length * sizeof(*temp)); 451 CALC_RGB16(temp, u, v, R, G, B); 452 STORE16_4(A, R, G, B, temp); 453 memcpy(dst, temp, length * 4 * sizeof(*dst)); 454 } else if (length > 0) { 455 uint8_t temp[4 * 8] = { 0 }; 456 memcpy(temp, y, length * sizeof(*temp)); 457 CALC_RGB8(temp, u, v, R, G, B); 458 STORE8_4(A, R, G, B, temp); 459 memcpy(dst, temp, length * 4 * sizeof(*dst)); 460 } 461 } 462 463 static void YuvToRgba4444Line(const uint8_t* y, const uint8_t* u, 464 const uint8_t* v, uint8_t* dst, int length) { 465 v16u8 R, G, B, RG, BA, tmp0, tmp1; 466 while (length >= 16) { 467 #if (WEBP_SWAP_16BIT_CSP == 1) 468 CALC_RGBA4444(y, u, v, BA, RG, 16, dst); 469 #else 470 CALC_RGBA4444(y, u, v, RG, BA, 16, dst); 471 #endif 472 y += 16; 473 u += 16; 474 v += 16; 475 dst += 16 * 2; 476 length -= 16; 477 } 478 if (length > 8) { 479 uint8_t temp[2 * 16] = { 0 }; 480 memcpy(temp, y, length * sizeof(*temp)); 481 #if (WEBP_SWAP_16BIT_CSP == 1) 482 CALC_RGBA4444(temp, u, v, BA, RG, 16, temp); 483 #else 484 CALC_RGBA4444(temp, u, v, RG, BA, 16, temp); 485 #endif 486 memcpy(dst, temp, length * 2 * sizeof(*dst)); 487 } else if (length > 0) { 488 uint8_t temp[2 * 8] = { 0 }; 489 memcpy(temp, y, length * sizeof(*temp)); 490 #if (WEBP_SWAP_16BIT_CSP == 1) 491 CALC_RGBA4444(temp, u, v, BA, RG, 8, temp); 492 #else 493 CALC_RGBA4444(temp, u, v, RG, BA, 8, temp); 494 #endif 495 memcpy(dst, temp, length * 2 * sizeof(*dst)); 496 } 497 } 498 499 static void YuvToRgb565Line(const uint8_t* y, const uint8_t* u, 500 const uint8_t* v, uint8_t* dst, int length) { 501 v16u8 R, G, B, RG, GB, tmp0, tmp1; 502 while (length >= 16) { 503 #if (WEBP_SWAP_16BIT_CSP == 1) 504 CALC_RGB565(y, u, v, GB, RG, 16, dst); 505 #else 506 CALC_RGB565(y, u, v, RG, GB, 16, dst); 507 #endif 508 y += 16; 509 u += 16; 510 v += 16; 511 dst += 16 * 2; 512 length -= 16; 513 } 514 if (length > 8) { 515 uint8_t temp[2 * 16] = { 0 }; 516 memcpy(temp, y, length * sizeof(*temp)); 517 #if (WEBP_SWAP_16BIT_CSP == 1) 518 CALC_RGB565(temp, u, v, GB, RG, 16, temp); 519 #else 520 CALC_RGB565(temp, u, v, RG, GB, 16, temp); 521 #endif 522 memcpy(dst, temp, length * 2 * sizeof(*dst)); 523 } else if (length > 0) { 524 uint8_t temp[2 * 8] = { 0 }; 525 memcpy(temp, y, length * sizeof(*temp)); 526 #if (WEBP_SWAP_16BIT_CSP == 1) 527 CALC_RGB565(temp, u, v, GB, RG, 8, temp); 528 #else 529 CALC_RGB565(temp, u, v, RG, GB, 8, temp); 530 #endif 531 memcpy(dst, temp, length * 2 * sizeof(*dst)); 532 } 533 } 534 #endif // WEBP_REDUCE_CSP 535 536 #define UPSAMPLE_32PIXELS(a, b, c, d) do { \ 537 v16u8 s = __msa_aver_u_b(a, d); \ 538 v16u8 t = __msa_aver_u_b(b, c); \ 539 const v16u8 st = s ^ t; \ 540 v16u8 ad = a ^ d; \ 541 v16u8 bc = b ^ c; \ 542 v16u8 t0 = ad | bc; \ 543 v16u8 t1 = t0 | st; \ 544 v16u8 t2 = ANDI_B(t1, 1); \ 545 v16u8 t3 = __msa_aver_u_b(s, t); \ 546 const v16u8 k = t3 - t2; \ 547 v16u8 diag1, diag2; \ 548 AVER_UB2_UB(t, k, s, k, t0, t1); \ 549 bc = bc & st; \ 550 ad = ad & st; \ 551 t = t ^ k; \ 552 s = s ^ k; \ 553 t2 = bc | t; \ 554 t3 = ad | s; \ 555 t2 = ANDI_B(t2, 1); \ 556 t3 = ANDI_B(t3, 1); \ 557 SUB2(t0, t2, t1, t3, diag1, diag2); \ 558 AVER_UB2_UB(a, diag1, b, diag2, t0, t1); \ 559 ILVRL_B2_UB(t1, t0, a, b); \ 560 if (pbot_y != NULL) { \ 561 AVER_UB2_UB(c, diag2, d, diag1, t0, t1); \ 562 ILVRL_B2_UB(t1, t0, c, d); \ 563 } \ 564 } while (0) 565 566 #define UPSAMPLE_FUNC(FUNC_NAME, FUNC, XSTEP) \ 567 static void FUNC_NAME(const uint8_t* top_y, const uint8_t* bot_y, \ 568 const uint8_t* top_u, const uint8_t* top_v, \ 569 const uint8_t* cur_u, const uint8_t* cur_v, \ 570 uint8_t* top_dst, uint8_t* bot_dst, int len) \ 571 { \ 572 int size = (len - 1) >> 1; \ 573 uint8_t temp_u[64]; \ 574 uint8_t temp_v[64]; \ 575 const uint32_t tl_uv = ((top_u[0]) | ((top_v[0]) << 16)); \ 576 const uint32_t l_uv = ((cur_u[0]) | ((cur_v[0]) << 16)); \ 577 const uint32_t uv0 = (3 * tl_uv + l_uv + 0x00020002u) >> 2; \ 578 const uint8_t* ptop_y = &top_y[1]; \ 579 uint8_t *ptop_dst = top_dst + XSTEP; \ 580 const uint8_t* pbot_y = &bot_y[1]; \ 581 uint8_t *pbot_dst = bot_dst + XSTEP; \ 582 \ 583 FUNC(top_y[0], uv0 & 0xff, (uv0 >> 16), top_dst); \ 584 if (bot_y != NULL) { \ 585 const uint32_t uv1 = (3 * l_uv + tl_uv + 0x00020002u) >> 2; \ 586 FUNC(bot_y[0], uv1 & 0xff, (uv1 >> 16), bot_dst); \ 587 } \ 588 while (size >= 16) { \ 589 v16u8 tu0, tu1, tv0, tv1, cu0, cu1, cv0, cv1; \ 590 LD_UB2(top_u, 1, tu0, tu1); \ 591 LD_UB2(cur_u, 1, cu0, cu1); \ 592 LD_UB2(top_v, 1, tv0, tv1); \ 593 LD_UB2(cur_v, 1, cv0, cv1); \ 594 UPSAMPLE_32PIXELS(tu0, tu1, cu0, cu1); \ 595 UPSAMPLE_32PIXELS(tv0, tv1, cv0, cv1); \ 596 ST_UB4(tu0, tu1, cu0, cu1, &temp_u[0], 16); \ 597 ST_UB4(tv0, tv1, cv0, cv1, &temp_v[0], 16); \ 598 FUNC##Line(ptop_y, &temp_u[ 0], &temp_v[0], ptop_dst, 32); \ 599 if (bot_y != NULL) { \ 600 FUNC##Line(pbot_y, &temp_u[32], &temp_v[32], pbot_dst, 32); \ 601 } \ 602 ptop_y += 32; \ 603 pbot_y += 32; \ 604 ptop_dst += XSTEP * 32; \ 605 pbot_dst += XSTEP * 32; \ 606 top_u += 16; \ 607 top_v += 16; \ 608 cur_u += 16; \ 609 cur_v += 16; \ 610 size -= 16; \ 611 } \ 612 if (size > 0) { \ 613 v16u8 tu0, tu1, tv0, tv1, cu0, cu1, cv0, cv1; \ 614 memcpy(&temp_u[ 0], top_u, 17 * sizeof(uint8_t)); \ 615 memcpy(&temp_u[32], cur_u, 17 * sizeof(uint8_t)); \ 616 memcpy(&temp_v[ 0], top_v, 17 * sizeof(uint8_t)); \ 617 memcpy(&temp_v[32], cur_v, 17 * sizeof(uint8_t)); \ 618 LD_UB2(&temp_u[ 0], 1, tu0, tu1); \ 619 LD_UB2(&temp_u[32], 1, cu0, cu1); \ 620 LD_UB2(&temp_v[ 0], 1, tv0, tv1); \ 621 LD_UB2(&temp_v[32], 1, cv0, cv1); \ 622 UPSAMPLE_32PIXELS(tu0, tu1, cu0, cu1); \ 623 UPSAMPLE_32PIXELS(tv0, tv1, cv0, cv1); \ 624 ST_UB4(tu0, tu1, cu0, cu1, &temp_u[0], 16); \ 625 ST_UB4(tv0, tv1, cv0, cv1, &temp_v[0], 16); \ 626 FUNC##Line(ptop_y, &temp_u[ 0], &temp_v[0], ptop_dst, size * 2); \ 627 if (bot_y != NULL) { \ 628 FUNC##Line(pbot_y, &temp_u[32], &temp_v[32], pbot_dst, size * 2); \ 629 } \ 630 top_u += size; \ 631 top_v += size; \ 632 cur_u += size; \ 633 cur_v += size; \ 634 } \ 635 if (!(len & 1)) { \ 636 const uint32_t t0 = ((top_u[0]) | ((top_v[0]) << 16)); \ 637 const uint32_t c0 = ((cur_u[0]) | ((cur_v[0]) << 16)); \ 638 const uint32_t tmp0 = (3 * t0 + c0 + 0x00020002u) >> 2; \ 639 FUNC(top_y[len - 1], tmp0 & 0xff, (tmp0 >> 16), \ 640 top_dst + (len - 1) * XSTEP); \ 641 if (bot_y != NULL) { \ 642 const uint32_t tmp1 = (3 * c0 + t0 + 0x00020002u) >> 2; \ 643 FUNC(bot_y[len - 1], tmp1 & 0xff, (tmp1 >> 16), \ 644 bot_dst + (len - 1) * XSTEP); \ 645 } \ 646 } \ 647 } 648 649 UPSAMPLE_FUNC(UpsampleRgbaLinePair, YuvToRgba, 4) 650 UPSAMPLE_FUNC(UpsampleBgraLinePair, YuvToBgra, 4) 651 #if !defined(WEBP_REDUCE_CSP) 652 UPSAMPLE_FUNC(UpsampleRgbLinePair, YuvToRgb, 3) 653 UPSAMPLE_FUNC(UpsampleBgrLinePair, YuvToBgr, 3) 654 UPSAMPLE_FUNC(UpsampleArgbLinePair, YuvToArgb, 4) 655 UPSAMPLE_FUNC(UpsampleRgba4444LinePair, YuvToRgba4444, 2) 656 UPSAMPLE_FUNC(UpsampleRgb565LinePair, YuvToRgb565, 2) 657 #endif // WEBP_REDUCE_CSP 658 659 //------------------------------------------------------------------------------ 660 // Entry point 661 662 extern WebPUpsampleLinePairFunc WebPUpsamplers[/* MODE_LAST */]; 663 664 extern void WebPInitUpsamplersMSA(void); 665 666 WEBP_TSAN_IGNORE_FUNCTION void WebPInitUpsamplersMSA(void) { 667 WebPUpsamplers[MODE_RGBA] = UpsampleRgbaLinePair; 668 WebPUpsamplers[MODE_BGRA] = UpsampleBgraLinePair; 669 WebPUpsamplers[MODE_rgbA] = UpsampleRgbaLinePair; 670 WebPUpsamplers[MODE_bgrA] = UpsampleBgraLinePair; 671 #if !defined(WEBP_REDUCE_CSP) 672 WebPUpsamplers[MODE_RGB] = UpsampleRgbLinePair; 673 WebPUpsamplers[MODE_BGR] = UpsampleBgrLinePair; 674 WebPUpsamplers[MODE_ARGB] = UpsampleArgbLinePair; 675 WebPUpsamplers[MODE_Argb] = UpsampleArgbLinePair; 676 WebPUpsamplers[MODE_RGB_565] = UpsampleRgb565LinePair; 677 WebPUpsamplers[MODE_RGBA_4444] = UpsampleRgba4444LinePair; 678 WebPUpsamplers[MODE_rgbA_4444] = UpsampleRgba4444LinePair; 679 #endif // WEBP_REDUCE_CSP 680 } 681 682 #endif // FANCY_UPSAMPLING 683 684 #endif // WEBP_USE_MSA 685 686 #if !(defined(FANCY_UPSAMPLING) && defined(WEBP_USE_MSA)) 687 WEBP_DSP_INIT_STUB(WebPInitUpsamplersMSA) 688 #endif 689
