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 // YUV->RGB conversion functions 11 // 12 // Author: Skal (pascal.massimino (at) gmail.com) 13 14 #include "src/dsp/yuv.h" 15 16 #if defined(WEBP_USE_SSE2) 17 18 #include "src/dsp/common_sse2.h" 19 #include <stdlib.h> 20 #include <emmintrin.h> 21 22 //----------------------------------------------------------------------------- 23 // Convert spans of 32 pixels to various RGB formats for the fancy upsampler. 24 25 // These constants are 14b fixed-point version of ITU-R BT.601 constants. 26 // R = (19077 * y + 26149 * v - 14234) >> 6 27 // G = (19077 * y - 6419 * u - 13320 * v + 8708) >> 6 28 // B = (19077 * y + 33050 * u - 17685) >> 6 29 static void ConvertYUV444ToRGB_SSE2(const __m128i* const Y0, 30 const __m128i* const U0, 31 const __m128i* const V0, 32 __m128i* const R, 33 __m128i* const G, 34 __m128i* const B) { 35 const __m128i k19077 = _mm_set1_epi16(19077); 36 const __m128i k26149 = _mm_set1_epi16(26149); 37 const __m128i k14234 = _mm_set1_epi16(14234); 38 // 33050 doesn't fit in a signed short: only use this with unsigned arithmetic 39 const __m128i k33050 = _mm_set1_epi16((short)33050); 40 const __m128i k17685 = _mm_set1_epi16(17685); 41 const __m128i k6419 = _mm_set1_epi16(6419); 42 const __m128i k13320 = _mm_set1_epi16(13320); 43 const __m128i k8708 = _mm_set1_epi16(8708); 44 45 const __m128i Y1 = _mm_mulhi_epu16(*Y0, k19077); 46 47 const __m128i R0 = _mm_mulhi_epu16(*V0, k26149); 48 const __m128i R1 = _mm_sub_epi16(Y1, k14234); 49 const __m128i R2 = _mm_add_epi16(R1, R0); 50 51 const __m128i G0 = _mm_mulhi_epu16(*U0, k6419); 52 const __m128i G1 = _mm_mulhi_epu16(*V0, k13320); 53 const __m128i G2 = _mm_add_epi16(Y1, k8708); 54 const __m128i G3 = _mm_add_epi16(G0, G1); 55 const __m128i G4 = _mm_sub_epi16(G2, G3); 56 57 // be careful with the saturated *unsigned* arithmetic here! 58 const __m128i B0 = _mm_mulhi_epu16(*U0, k33050); 59 const __m128i B1 = _mm_adds_epu16(B0, Y1); 60 const __m128i B2 = _mm_subs_epu16(B1, k17685); 61 62 // use logical shift for B2, which can be larger than 32767 63 *R = _mm_srai_epi16(R2, 6); // range: [-14234, 30815] 64 *G = _mm_srai_epi16(G4, 6); // range: [-10953, 27710] 65 *B = _mm_srli_epi16(B2, 6); // range: [0, 34238] 66 } 67 68 // Load the bytes into the *upper* part of 16b words. That's "<< 8", basically. 69 static WEBP_INLINE __m128i Load_HI_16_SSE2(const uint8_t* src) { 70 const __m128i zero = _mm_setzero_si128(); 71 return _mm_unpacklo_epi8(zero, _mm_loadl_epi64((const __m128i*)src)); 72 } 73 74 // Load and replicate the U/V samples 75 static WEBP_INLINE __m128i Load_UV_HI_8_SSE2(const uint8_t* src) { 76 const __m128i zero = _mm_setzero_si128(); 77 const __m128i tmp0 = _mm_cvtsi32_si128(*(const uint32_t*)src); 78 const __m128i tmp1 = _mm_unpacklo_epi8(zero, tmp0); 79 return _mm_unpacklo_epi16(tmp1, tmp1); // replicate samples 80 } 81 82 // Convert 32 samples of YUV444 to R/G/B 83 static void YUV444ToRGB_SSE2(const uint8_t* const y, 84 const uint8_t* const u, 85 const uint8_t* const v, 86 __m128i* const R, __m128i* const G, 87 __m128i* const B) { 88 const __m128i Y0 = Load_HI_16_SSE2(y), U0 = Load_HI_16_SSE2(u), 89 V0 = Load_HI_16_SSE2(v); 90 ConvertYUV444ToRGB_SSE2(&Y0, &U0, &V0, R, G, B); 91 } 92 93 // Convert 32 samples of YUV420 to R/G/B 94 static void YUV420ToRGB_SSE2(const uint8_t* const y, 95 const uint8_t* const u, 96 const uint8_t* const v, 97 __m128i* const R, __m128i* const G, 98 __m128i* const B) { 99 const __m128i Y0 = Load_HI_16_SSE2(y), U0 = Load_UV_HI_8_SSE2(u), 100 V0 = Load_UV_HI_8_SSE2(v); 101 ConvertYUV444ToRGB_SSE2(&Y0, &U0, &V0, R, G, B); 102 } 103 104 // Pack R/G/B/A results into 32b output. 105 static WEBP_INLINE void PackAndStore4_SSE2(const __m128i* const R, 106 const __m128i* const G, 107 const __m128i* const B, 108 const __m128i* const A, 109 uint8_t* const dst) { 110 const __m128i rb = _mm_packus_epi16(*R, *B); 111 const __m128i ga = _mm_packus_epi16(*G, *A); 112 const __m128i rg = _mm_unpacklo_epi8(rb, ga); 113 const __m128i ba = _mm_unpackhi_epi8(rb, ga); 114 const __m128i RGBA_lo = _mm_unpacklo_epi16(rg, ba); 115 const __m128i RGBA_hi = _mm_unpackhi_epi16(rg, ba); 116 _mm_storeu_si128((__m128i*)(dst + 0), RGBA_lo); 117 _mm_storeu_si128((__m128i*)(dst + 16), RGBA_hi); 118 } 119 120 // Pack R/G/B/A results into 16b output. 121 static WEBP_INLINE void PackAndStore4444_SSE2(const __m128i* const R, 122 const __m128i* const G, 123 const __m128i* const B, 124 const __m128i* const A, 125 uint8_t* const dst) { 126 #if (WEBP_SWAP_16BIT_CSP == 0) 127 const __m128i rg0 = _mm_packus_epi16(*R, *G); 128 const __m128i ba0 = _mm_packus_epi16(*B, *A); 129 #else 130 const __m128i rg0 = _mm_packus_epi16(*B, *A); 131 const __m128i ba0 = _mm_packus_epi16(*R, *G); 132 #endif 133 const __m128i mask_0xf0 = _mm_set1_epi8(0xf0); 134 const __m128i rb1 = _mm_unpacklo_epi8(rg0, ba0); // rbrbrbrbrb... 135 const __m128i ga1 = _mm_unpackhi_epi8(rg0, ba0); // gagagagaga... 136 const __m128i rb2 = _mm_and_si128(rb1, mask_0xf0); 137 const __m128i ga2 = _mm_srli_epi16(_mm_and_si128(ga1, mask_0xf0), 4); 138 const __m128i rgba4444 = _mm_or_si128(rb2, ga2); 139 _mm_storeu_si128((__m128i*)dst, rgba4444); 140 } 141 142 // Pack R/G/B results into 16b output. 143 static WEBP_INLINE void PackAndStore565_SSE2(const __m128i* const R, 144 const __m128i* const G, 145 const __m128i* const B, 146 uint8_t* const dst) { 147 const __m128i r0 = _mm_packus_epi16(*R, *R); 148 const __m128i g0 = _mm_packus_epi16(*G, *G); 149 const __m128i b0 = _mm_packus_epi16(*B, *B); 150 const __m128i r1 = _mm_and_si128(r0, _mm_set1_epi8(0xf8)); 151 const __m128i b1 = _mm_and_si128(_mm_srli_epi16(b0, 3), _mm_set1_epi8(0x1f)); 152 const __m128i g1 = _mm_srli_epi16(_mm_and_si128(g0, _mm_set1_epi8(0xe0)), 5); 153 const __m128i g2 = _mm_slli_epi16(_mm_and_si128(g0, _mm_set1_epi8(0x1c)), 3); 154 const __m128i rg = _mm_or_si128(r1, g1); 155 const __m128i gb = _mm_or_si128(g2, b1); 156 #if (WEBP_SWAP_16BIT_CSP == 0) 157 const __m128i rgb565 = _mm_unpacklo_epi8(rg, gb); 158 #else 159 const __m128i rgb565 = _mm_unpacklo_epi8(gb, rg); 160 #endif 161 _mm_storeu_si128((__m128i*)dst, rgb565); 162 } 163 164 // Pack the planar buffers 165 // rrrr... rrrr... gggg... gggg... bbbb... bbbb.... 166 // triplet by triplet in the output buffer rgb as rgbrgbrgbrgb ... 167 static WEBP_INLINE void PlanarTo24b_SSE2(__m128i* const in0, __m128i* const in1, 168 __m128i* const in2, __m128i* const in3, 169 __m128i* const in4, __m128i* const in5, 170 uint8_t* const rgb) { 171 // The input is 6 registers of sixteen 8b but for the sake of explanation, 172 // let's take 6 registers of four 8b values. 173 // To pack, we will keep taking one every two 8b integer and move it 174 // around as follows: 175 // Input: 176 // r0r1r2r3 | r4r5r6r7 | g0g1g2g3 | g4g5g6g7 | b0b1b2b3 | b4b5b6b7 177 // Split the 6 registers in two sets of 3 registers: the first set as the even 178 // 8b bytes, the second the odd ones: 179 // r0r2r4r6 | g0g2g4g6 | b0b2b4b6 | r1r3r5r7 | g1g3g5g7 | b1b3b5b7 180 // Repeat the same permutations twice more: 181 // r0r4g0g4 | b0b4r1r5 | g1g5b1b5 | r2r6g2g6 | b2b6r3r7 | g3g7b3b7 182 // r0g0b0r1 | g1b1r2g2 | b2r3g3b3 | r4g4b4r5 | g5b5r6g6 | b6r7g7b7 183 VP8PlanarTo24b_SSE2(in0, in1, in2, in3, in4, in5); 184 185 _mm_storeu_si128((__m128i*)(rgb + 0), *in0); 186 _mm_storeu_si128((__m128i*)(rgb + 16), *in1); 187 _mm_storeu_si128((__m128i*)(rgb + 32), *in2); 188 _mm_storeu_si128((__m128i*)(rgb + 48), *in3); 189 _mm_storeu_si128((__m128i*)(rgb + 64), *in4); 190 _mm_storeu_si128((__m128i*)(rgb + 80), *in5); 191 } 192 193 void VP8YuvToRgba32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v, 194 uint8_t* dst) { 195 const __m128i kAlpha = _mm_set1_epi16(255); 196 int n; 197 for (n = 0; n < 32; n += 8, dst += 32) { 198 __m128i R, G, B; 199 YUV444ToRGB_SSE2(y + n, u + n, v + n, &R, &G, &B); 200 PackAndStore4_SSE2(&R, &G, &B, &kAlpha, dst); 201 } 202 } 203 204 void VP8YuvToBgra32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v, 205 uint8_t* dst) { 206 const __m128i kAlpha = _mm_set1_epi16(255); 207 int n; 208 for (n = 0; n < 32; n += 8, dst += 32) { 209 __m128i R, G, B; 210 YUV444ToRGB_SSE2(y + n, u + n, v + n, &R, &G, &B); 211 PackAndStore4_SSE2(&B, &G, &R, &kAlpha, dst); 212 } 213 } 214 215 void VP8YuvToArgb32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v, 216 uint8_t* dst) { 217 const __m128i kAlpha = _mm_set1_epi16(255); 218 int n; 219 for (n = 0; n < 32; n += 8, dst += 32) { 220 __m128i R, G, B; 221 YUV444ToRGB_SSE2(y + n, u + n, v + n, &R, &G, &B); 222 PackAndStore4_SSE2(&kAlpha, &R, &G, &B, dst); 223 } 224 } 225 226 void VP8YuvToRgba444432_SSE2(const uint8_t* y, const uint8_t* u, 227 const uint8_t* v, uint8_t* dst) { 228 const __m128i kAlpha = _mm_set1_epi16(255); 229 int n; 230 for (n = 0; n < 32; n += 8, dst += 16) { 231 __m128i R, G, B; 232 YUV444ToRGB_SSE2(y + n, u + n, v + n, &R, &G, &B); 233 PackAndStore4444_SSE2(&R, &G, &B, &kAlpha, dst); 234 } 235 } 236 237 void VP8YuvToRgb56532_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v, 238 uint8_t* dst) { 239 int n; 240 for (n = 0; n < 32; n += 8, dst += 16) { 241 __m128i R, G, B; 242 YUV444ToRGB_SSE2(y + n, u + n, v + n, &R, &G, &B); 243 PackAndStore565_SSE2(&R, &G, &B, dst); 244 } 245 } 246 247 void VP8YuvToRgb32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v, 248 uint8_t* dst) { 249 __m128i R0, R1, R2, R3, G0, G1, G2, G3, B0, B1, B2, B3; 250 __m128i rgb0, rgb1, rgb2, rgb3, rgb4, rgb5; 251 252 YUV444ToRGB_SSE2(y + 0, u + 0, v + 0, &R0, &G0, &B0); 253 YUV444ToRGB_SSE2(y + 8, u + 8, v + 8, &R1, &G1, &B1); 254 YUV444ToRGB_SSE2(y + 16, u + 16, v + 16, &R2, &G2, &B2); 255 YUV444ToRGB_SSE2(y + 24, u + 24, v + 24, &R3, &G3, &B3); 256 257 // Cast to 8b and store as RRRRGGGGBBBB. 258 rgb0 = _mm_packus_epi16(R0, R1); 259 rgb1 = _mm_packus_epi16(R2, R3); 260 rgb2 = _mm_packus_epi16(G0, G1); 261 rgb3 = _mm_packus_epi16(G2, G3); 262 rgb4 = _mm_packus_epi16(B0, B1); 263 rgb5 = _mm_packus_epi16(B2, B3); 264 265 // Pack as RGBRGBRGBRGB. 266 PlanarTo24b_SSE2(&rgb0, &rgb1, &rgb2, &rgb3, &rgb4, &rgb5, dst); 267 } 268 269 void VP8YuvToBgr32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v, 270 uint8_t* dst) { 271 __m128i R0, R1, R2, R3, G0, G1, G2, G3, B0, B1, B2, B3; 272 __m128i bgr0, bgr1, bgr2, bgr3, bgr4, bgr5; 273 274 YUV444ToRGB_SSE2(y + 0, u + 0, v + 0, &R0, &G0, &B0); 275 YUV444ToRGB_SSE2(y + 8, u + 8, v + 8, &R1, &G1, &B1); 276 YUV444ToRGB_SSE2(y + 16, u + 16, v + 16, &R2, &G2, &B2); 277 YUV444ToRGB_SSE2(y + 24, u + 24, v + 24, &R3, &G3, &B3); 278 279 // Cast to 8b and store as BBBBGGGGRRRR. 280 bgr0 = _mm_packus_epi16(B0, B1); 281 bgr1 = _mm_packus_epi16(B2, B3); 282 bgr2 = _mm_packus_epi16(G0, G1); 283 bgr3 = _mm_packus_epi16(G2, G3); 284 bgr4 = _mm_packus_epi16(R0, R1); 285 bgr5= _mm_packus_epi16(R2, R3); 286 287 // Pack as BGRBGRBGRBGR. 288 PlanarTo24b_SSE2(&bgr0, &bgr1, &bgr2, &bgr3, &bgr4, &bgr5, dst); 289 } 290 291 //----------------------------------------------------------------------------- 292 // Arbitrary-length row conversion functions 293 294 static void YuvToRgbaRow_SSE2(const uint8_t* y, 295 const uint8_t* u, const uint8_t* v, 296 uint8_t* dst, int len) { 297 const __m128i kAlpha = _mm_set1_epi16(255); 298 int n; 299 for (n = 0; n + 8 <= len; n += 8, dst += 32) { 300 __m128i R, G, B; 301 YUV420ToRGB_SSE2(y, u, v, &R, &G, &B); 302 PackAndStore4_SSE2(&R, &G, &B, &kAlpha, dst); 303 y += 8; 304 u += 4; 305 v += 4; 306 } 307 for (; n < len; ++n) { // Finish off 308 VP8YuvToRgba(y[0], u[0], v[0], dst); 309 dst += 4; 310 y += 1; 311 u += (n & 1); 312 v += (n & 1); 313 } 314 } 315 316 static void YuvToBgraRow_SSE2(const uint8_t* y, 317 const uint8_t* u, const uint8_t* v, 318 uint8_t* dst, int len) { 319 const __m128i kAlpha = _mm_set1_epi16(255); 320 int n; 321 for (n = 0; n + 8 <= len; n += 8, dst += 32) { 322 __m128i R, G, B; 323 YUV420ToRGB_SSE2(y, u, v, &R, &G, &B); 324 PackAndStore4_SSE2(&B, &G, &R, &kAlpha, dst); 325 y += 8; 326 u += 4; 327 v += 4; 328 } 329 for (; n < len; ++n) { // Finish off 330 VP8YuvToBgra(y[0], u[0], v[0], dst); 331 dst += 4; 332 y += 1; 333 u += (n & 1); 334 v += (n & 1); 335 } 336 } 337 338 static void YuvToArgbRow_SSE2(const uint8_t* y, 339 const uint8_t* u, const uint8_t* v, 340 uint8_t* dst, int len) { 341 const __m128i kAlpha = _mm_set1_epi16(255); 342 int n; 343 for (n = 0; n + 8 <= len; n += 8, dst += 32) { 344 __m128i R, G, B; 345 YUV420ToRGB_SSE2(y, u, v, &R, &G, &B); 346 PackAndStore4_SSE2(&kAlpha, &R, &G, &B, dst); 347 y += 8; 348 u += 4; 349 v += 4; 350 } 351 for (; n < len; ++n) { // Finish off 352 VP8YuvToArgb(y[0], u[0], v[0], dst); 353 dst += 4; 354 y += 1; 355 u += (n & 1); 356 v += (n & 1); 357 } 358 } 359 360 static void YuvToRgbRow_SSE2(const uint8_t* y, 361 const uint8_t* u, const uint8_t* v, 362 uint8_t* dst, int len) { 363 int n; 364 for (n = 0; n + 32 <= len; n += 32, dst += 32 * 3) { 365 __m128i R0, R1, R2, R3, G0, G1, G2, G3, B0, B1, B2, B3; 366 __m128i rgb0, rgb1, rgb2, rgb3, rgb4, rgb5; 367 368 YUV420ToRGB_SSE2(y + 0, u + 0, v + 0, &R0, &G0, &B0); 369 YUV420ToRGB_SSE2(y + 8, u + 4, v + 4, &R1, &G1, &B1); 370 YUV420ToRGB_SSE2(y + 16, u + 8, v + 8, &R2, &G2, &B2); 371 YUV420ToRGB_SSE2(y + 24, u + 12, v + 12, &R3, &G3, &B3); 372 373 // Cast to 8b and store as RRRRGGGGBBBB. 374 rgb0 = _mm_packus_epi16(R0, R1); 375 rgb1 = _mm_packus_epi16(R2, R3); 376 rgb2 = _mm_packus_epi16(G0, G1); 377 rgb3 = _mm_packus_epi16(G2, G3); 378 rgb4 = _mm_packus_epi16(B0, B1); 379 rgb5 = _mm_packus_epi16(B2, B3); 380 381 // Pack as RGBRGBRGBRGB. 382 PlanarTo24b_SSE2(&rgb0, &rgb1, &rgb2, &rgb3, &rgb4, &rgb5, dst); 383 384 y += 32; 385 u += 16; 386 v += 16; 387 } 388 for (; n < len; ++n) { // Finish off 389 VP8YuvToRgb(y[0], u[0], v[0], dst); 390 dst += 3; 391 y += 1; 392 u += (n & 1); 393 v += (n & 1); 394 } 395 } 396 397 static void YuvToBgrRow_SSE2(const uint8_t* y, 398 const uint8_t* u, const uint8_t* v, 399 uint8_t* dst, int len) { 400 int n; 401 for (n = 0; n + 32 <= len; n += 32, dst += 32 * 3) { 402 __m128i R0, R1, R2, R3, G0, G1, G2, G3, B0, B1, B2, B3; 403 __m128i bgr0, bgr1, bgr2, bgr3, bgr4, bgr5; 404 405 YUV420ToRGB_SSE2(y + 0, u + 0, v + 0, &R0, &G0, &B0); 406 YUV420ToRGB_SSE2(y + 8, u + 4, v + 4, &R1, &G1, &B1); 407 YUV420ToRGB_SSE2(y + 16, u + 8, v + 8, &R2, &G2, &B2); 408 YUV420ToRGB_SSE2(y + 24, u + 12, v + 12, &R3, &G3, &B3); 409 410 // Cast to 8b and store as BBBBGGGGRRRR. 411 bgr0 = _mm_packus_epi16(B0, B1); 412 bgr1 = _mm_packus_epi16(B2, B3); 413 bgr2 = _mm_packus_epi16(G0, G1); 414 bgr3 = _mm_packus_epi16(G2, G3); 415 bgr4 = _mm_packus_epi16(R0, R1); 416 bgr5 = _mm_packus_epi16(R2, R3); 417 418 // Pack as BGRBGRBGRBGR. 419 PlanarTo24b_SSE2(&bgr0, &bgr1, &bgr2, &bgr3, &bgr4, &bgr5, dst); 420 421 y += 32; 422 u += 16; 423 v += 16; 424 } 425 for (; n < len; ++n) { // Finish off 426 VP8YuvToBgr(y[0], u[0], v[0], dst); 427 dst += 3; 428 y += 1; 429 u += (n & 1); 430 v += (n & 1); 431 } 432 } 433 434 //------------------------------------------------------------------------------ 435 // Entry point 436 437 extern void WebPInitSamplersSSE2(void); 438 439 WEBP_TSAN_IGNORE_FUNCTION void WebPInitSamplersSSE2(void) { 440 WebPSamplers[MODE_RGB] = YuvToRgbRow_SSE2; 441 WebPSamplers[MODE_RGBA] = YuvToRgbaRow_SSE2; 442 WebPSamplers[MODE_BGR] = YuvToBgrRow_SSE2; 443 WebPSamplers[MODE_BGRA] = YuvToBgraRow_SSE2; 444 WebPSamplers[MODE_ARGB] = YuvToArgbRow_SSE2; 445 } 446 447 //------------------------------------------------------------------------------ 448 // RGB24/32 -> YUV converters 449 450 // Load eight 16b-words from *src. 451 #define LOAD_16(src) _mm_loadu_si128((const __m128i*)(src)) 452 // Store either 16b-words into *dst 453 #define STORE_16(V, dst) _mm_storeu_si128((__m128i*)(dst), (V)) 454 455 // Function that inserts a value of the second half of the in buffer in between 456 // every two char of the first half. 457 static WEBP_INLINE void RGB24PackedToPlanarHelper_SSE2( 458 const __m128i* const in /*in[6]*/, __m128i* const out /*out[6]*/) { 459 out[0] = _mm_unpacklo_epi8(in[0], in[3]); 460 out[1] = _mm_unpackhi_epi8(in[0], in[3]); 461 out[2] = _mm_unpacklo_epi8(in[1], in[4]); 462 out[3] = _mm_unpackhi_epi8(in[1], in[4]); 463 out[4] = _mm_unpacklo_epi8(in[2], in[5]); 464 out[5] = _mm_unpackhi_epi8(in[2], in[5]); 465 } 466 467 // Unpack the 8b input rgbrgbrgbrgb ... as contiguous registers: 468 // rrrr... rrrr... gggg... gggg... bbbb... bbbb.... 469 // Similar to PlanarTo24bHelper(), but in reverse order. 470 static WEBP_INLINE void RGB24PackedToPlanar_SSE2( 471 const uint8_t* const rgb, __m128i* const out /*out[6]*/) { 472 __m128i tmp[6]; 473 tmp[0] = _mm_loadu_si128((const __m128i*)(rgb + 0)); 474 tmp[1] = _mm_loadu_si128((const __m128i*)(rgb + 16)); 475 tmp[2] = _mm_loadu_si128((const __m128i*)(rgb + 32)); 476 tmp[3] = _mm_loadu_si128((const __m128i*)(rgb + 48)); 477 tmp[4] = _mm_loadu_si128((const __m128i*)(rgb + 64)); 478 tmp[5] = _mm_loadu_si128((const __m128i*)(rgb + 80)); 479 480 RGB24PackedToPlanarHelper_SSE2(tmp, out); 481 RGB24PackedToPlanarHelper_SSE2(out, tmp); 482 RGB24PackedToPlanarHelper_SSE2(tmp, out); 483 RGB24PackedToPlanarHelper_SSE2(out, tmp); 484 RGB24PackedToPlanarHelper_SSE2(tmp, out); 485 } 486 487 // Convert 8 packed ARGB to r[], g[], b[] 488 static WEBP_INLINE void RGB32PackedToPlanar_SSE2(const uint32_t* const argb, 489 __m128i* const rgb /*in[6]*/) { 490 const __m128i zero = _mm_setzero_si128(); 491 __m128i a0 = LOAD_16(argb + 0); 492 __m128i a1 = LOAD_16(argb + 4); 493 __m128i a2 = LOAD_16(argb + 8); 494 __m128i a3 = LOAD_16(argb + 12); 495 VP8L32bToPlanar_SSE2(&a0, &a1, &a2, &a3); 496 rgb[0] = _mm_unpacklo_epi8(a1, zero); 497 rgb[1] = _mm_unpackhi_epi8(a1, zero); 498 rgb[2] = _mm_unpacklo_epi8(a2, zero); 499 rgb[3] = _mm_unpackhi_epi8(a2, zero); 500 rgb[4] = _mm_unpacklo_epi8(a3, zero); 501 rgb[5] = _mm_unpackhi_epi8(a3, zero); 502 } 503 504 // This macro computes (RG * MULT_RG + GB * MULT_GB + ROUNDER) >> DESCALE_FIX 505 // It's a macro and not a function because we need to use immediate values with 506 // srai_epi32, e.g. 507 #define TRANSFORM(RG_LO, RG_HI, GB_LO, GB_HI, MULT_RG, MULT_GB, \ 508 ROUNDER, DESCALE_FIX, OUT) do { \ 509 const __m128i V0_lo = _mm_madd_epi16(RG_LO, MULT_RG); \ 510 const __m128i V0_hi = _mm_madd_epi16(RG_HI, MULT_RG); \ 511 const __m128i V1_lo = _mm_madd_epi16(GB_LO, MULT_GB); \ 512 const __m128i V1_hi = _mm_madd_epi16(GB_HI, MULT_GB); \ 513 const __m128i V2_lo = _mm_add_epi32(V0_lo, V1_lo); \ 514 const __m128i V2_hi = _mm_add_epi32(V0_hi, V1_hi); \ 515 const __m128i V3_lo = _mm_add_epi32(V2_lo, ROUNDER); \ 516 const __m128i V3_hi = _mm_add_epi32(V2_hi, ROUNDER); \ 517 const __m128i V5_lo = _mm_srai_epi32(V3_lo, DESCALE_FIX); \ 518 const __m128i V5_hi = _mm_srai_epi32(V3_hi, DESCALE_FIX); \ 519 (OUT) = _mm_packs_epi32(V5_lo, V5_hi); \ 520 } while (0) 521 522 #define MK_CST_16(A, B) _mm_set_epi16((B), (A), (B), (A), (B), (A), (B), (A)) 523 static WEBP_INLINE void ConvertRGBToY_SSE2(const __m128i* const R, 524 const __m128i* const G, 525 const __m128i* const B, 526 __m128i* const Y) { 527 const __m128i kRG_y = MK_CST_16(16839, 33059 - 16384); 528 const __m128i kGB_y = MK_CST_16(16384, 6420); 529 const __m128i kHALF_Y = _mm_set1_epi32((16 << YUV_FIX) + YUV_HALF); 530 531 const __m128i RG_lo = _mm_unpacklo_epi16(*R, *G); 532 const __m128i RG_hi = _mm_unpackhi_epi16(*R, *G); 533 const __m128i GB_lo = _mm_unpacklo_epi16(*G, *B); 534 const __m128i GB_hi = _mm_unpackhi_epi16(*G, *B); 535 TRANSFORM(RG_lo, RG_hi, GB_lo, GB_hi, kRG_y, kGB_y, kHALF_Y, YUV_FIX, *Y); 536 } 537 538 static WEBP_INLINE void ConvertRGBToUV_SSE2(const __m128i* const R, 539 const __m128i* const G, 540 const __m128i* const B, 541 __m128i* const U, 542 __m128i* const V) { 543 const __m128i kRG_u = MK_CST_16(-9719, -19081); 544 const __m128i kGB_u = MK_CST_16(0, 28800); 545 const __m128i kRG_v = MK_CST_16(28800, 0); 546 const __m128i kGB_v = MK_CST_16(-24116, -4684); 547 const __m128i kHALF_UV = _mm_set1_epi32(((128 << YUV_FIX) + YUV_HALF) << 2); 548 549 const __m128i RG_lo = _mm_unpacklo_epi16(*R, *G); 550 const __m128i RG_hi = _mm_unpackhi_epi16(*R, *G); 551 const __m128i GB_lo = _mm_unpacklo_epi16(*G, *B); 552 const __m128i GB_hi = _mm_unpackhi_epi16(*G, *B); 553 TRANSFORM(RG_lo, RG_hi, GB_lo, GB_hi, kRG_u, kGB_u, 554 kHALF_UV, YUV_FIX + 2, *U); 555 TRANSFORM(RG_lo, RG_hi, GB_lo, GB_hi, kRG_v, kGB_v, 556 kHALF_UV, YUV_FIX + 2, *V); 557 } 558 559 #undef MK_CST_16 560 #undef TRANSFORM 561 562 static void ConvertRGB24ToY_SSE2(const uint8_t* rgb, uint8_t* y, int width) { 563 const int max_width = width & ~31; 564 int i; 565 for (i = 0; i < max_width; rgb += 3 * 16 * 2) { 566 __m128i rgb_plane[6]; 567 int j; 568 569 RGB24PackedToPlanar_SSE2(rgb, rgb_plane); 570 571 for (j = 0; j < 2; ++j, i += 16) { 572 const __m128i zero = _mm_setzero_si128(); 573 __m128i r, g, b, Y0, Y1; 574 575 // Convert to 16-bit Y. 576 r = _mm_unpacklo_epi8(rgb_plane[0 + j], zero); 577 g = _mm_unpacklo_epi8(rgb_plane[2 + j], zero); 578 b = _mm_unpacklo_epi8(rgb_plane[4 + j], zero); 579 ConvertRGBToY_SSE2(&r, &g, &b, &Y0); 580 581 // Convert to 16-bit Y. 582 r = _mm_unpackhi_epi8(rgb_plane[0 + j], zero); 583 g = _mm_unpackhi_epi8(rgb_plane[2 + j], zero); 584 b = _mm_unpackhi_epi8(rgb_plane[4 + j], zero); 585 ConvertRGBToY_SSE2(&r, &g, &b, &Y1); 586 587 // Cast to 8-bit and store. 588 STORE_16(_mm_packus_epi16(Y0, Y1), y + i); 589 } 590 } 591 for (; i < width; ++i, rgb += 3) { // left-over 592 y[i] = VP8RGBToY(rgb[0], rgb[1], rgb[2], YUV_HALF); 593 } 594 } 595 596 static void ConvertBGR24ToY_SSE2(const uint8_t* bgr, uint8_t* y, int width) { 597 const int max_width = width & ~31; 598 int i; 599 for (i = 0; i < max_width; bgr += 3 * 16 * 2) { 600 __m128i bgr_plane[6]; 601 int j; 602 603 RGB24PackedToPlanar_SSE2(bgr, bgr_plane); 604 605 for (j = 0; j < 2; ++j, i += 16) { 606 const __m128i zero = _mm_setzero_si128(); 607 __m128i r, g, b, Y0, Y1; 608 609 // Convert to 16-bit Y. 610 b = _mm_unpacklo_epi8(bgr_plane[0 + j], zero); 611 g = _mm_unpacklo_epi8(bgr_plane[2 + j], zero); 612 r = _mm_unpacklo_epi8(bgr_plane[4 + j], zero); 613 ConvertRGBToY_SSE2(&r, &g, &b, &Y0); 614 615 // Convert to 16-bit Y. 616 b = _mm_unpackhi_epi8(bgr_plane[0 + j], zero); 617 g = _mm_unpackhi_epi8(bgr_plane[2 + j], zero); 618 r = _mm_unpackhi_epi8(bgr_plane[4 + j], zero); 619 ConvertRGBToY_SSE2(&r, &g, &b, &Y1); 620 621 // Cast to 8-bit and store. 622 STORE_16(_mm_packus_epi16(Y0, Y1), y + i); 623 } 624 } 625 for (; i < width; ++i, bgr += 3) { // left-over 626 y[i] = VP8RGBToY(bgr[2], bgr[1], bgr[0], YUV_HALF); 627 } 628 } 629 630 static void ConvertARGBToY_SSE2(const uint32_t* argb, uint8_t* y, int width) { 631 const int max_width = width & ~15; 632 int i; 633 for (i = 0; i < max_width; i += 16) { 634 __m128i Y0, Y1, rgb[6]; 635 RGB32PackedToPlanar_SSE2(&argb[i], rgb); 636 ConvertRGBToY_SSE2(&rgb[0], &rgb[2], &rgb[4], &Y0); 637 ConvertRGBToY_SSE2(&rgb[1], &rgb[3], &rgb[5], &Y1); 638 STORE_16(_mm_packus_epi16(Y0, Y1), y + i); 639 } 640 for (; i < width; ++i) { // left-over 641 const uint32_t p = argb[i]; 642 y[i] = VP8RGBToY((p >> 16) & 0xff, (p >> 8) & 0xff, (p >> 0) & 0xff, 643 YUV_HALF); 644 } 645 } 646 647 // Horizontal add (doubled) of two 16b values, result is 16b. 648 // in: A | B | C | D | ... -> out: 2*(A+B) | 2*(C+D) | ... 649 static void HorizontalAddPack_SSE2(const __m128i* const A, 650 const __m128i* const B, 651 __m128i* const out) { 652 const __m128i k2 = _mm_set1_epi16(2); 653 const __m128i C = _mm_madd_epi16(*A, k2); 654 const __m128i D = _mm_madd_epi16(*B, k2); 655 *out = _mm_packs_epi32(C, D); 656 } 657 658 static void ConvertARGBToUV_SSE2(const uint32_t* argb, 659 uint8_t* u, uint8_t* v, 660 int src_width, int do_store) { 661 const int max_width = src_width & ~31; 662 int i; 663 for (i = 0; i < max_width; i += 32, u += 16, v += 16) { 664 __m128i rgb[6], U0, V0, U1, V1; 665 RGB32PackedToPlanar_SSE2(&argb[i], rgb); 666 HorizontalAddPack_SSE2(&rgb[0], &rgb[1], &rgb[0]); 667 HorizontalAddPack_SSE2(&rgb[2], &rgb[3], &rgb[2]); 668 HorizontalAddPack_SSE2(&rgb[4], &rgb[5], &rgb[4]); 669 ConvertRGBToUV_SSE2(&rgb[0], &rgb[2], &rgb[4], &U0, &V0); 670 671 RGB32PackedToPlanar_SSE2(&argb[i + 16], rgb); 672 HorizontalAddPack_SSE2(&rgb[0], &rgb[1], &rgb[0]); 673 HorizontalAddPack_SSE2(&rgb[2], &rgb[3], &rgb[2]); 674 HorizontalAddPack_SSE2(&rgb[4], &rgb[5], &rgb[4]); 675 ConvertRGBToUV_SSE2(&rgb[0], &rgb[2], &rgb[4], &U1, &V1); 676 677 U0 = _mm_packus_epi16(U0, U1); 678 V0 = _mm_packus_epi16(V0, V1); 679 if (!do_store) { 680 const __m128i prev_u = LOAD_16(u); 681 const __m128i prev_v = LOAD_16(v); 682 U0 = _mm_avg_epu8(U0, prev_u); 683 V0 = _mm_avg_epu8(V0, prev_v); 684 } 685 STORE_16(U0, u); 686 STORE_16(V0, v); 687 } 688 if (i < src_width) { // left-over 689 WebPConvertARGBToUV_C(argb + i, u, v, src_width - i, do_store); 690 } 691 } 692 693 // Convert 16 packed ARGB 16b-values to r[], g[], b[] 694 static WEBP_INLINE void RGBA32PackedToPlanar_16b_SSE2( 695 const uint16_t* const rgbx, 696 __m128i* const r, __m128i* const g, __m128i* const b) { 697 const __m128i in0 = LOAD_16(rgbx + 0); // r0 | g0 | b0 |x| r1 | g1 | b1 |x 698 const __m128i in1 = LOAD_16(rgbx + 8); // r2 | g2 | b2 |x| r3 | g3 | b3 |x 699 const __m128i in2 = LOAD_16(rgbx + 16); // r4 | ... 700 const __m128i in3 = LOAD_16(rgbx + 24); // r6 | ... 701 // column-wise transpose 702 const __m128i A0 = _mm_unpacklo_epi16(in0, in1); 703 const __m128i A1 = _mm_unpackhi_epi16(in0, in1); 704 const __m128i A2 = _mm_unpacklo_epi16(in2, in3); 705 const __m128i A3 = _mm_unpackhi_epi16(in2, in3); 706 const __m128i B0 = _mm_unpacklo_epi16(A0, A1); // r0 r1 r2 r3 | g0 g1 .. 707 const __m128i B1 = _mm_unpackhi_epi16(A0, A1); // b0 b1 b2 b3 | x x x x 708 const __m128i B2 = _mm_unpacklo_epi16(A2, A3); // r4 r5 r6 r7 | g4 g5 .. 709 const __m128i B3 = _mm_unpackhi_epi16(A2, A3); // b4 b5 b6 b7 | x x x x 710 *r = _mm_unpacklo_epi64(B0, B2); 711 *g = _mm_unpackhi_epi64(B0, B2); 712 *b = _mm_unpacklo_epi64(B1, B3); 713 } 714 715 static void ConvertRGBA32ToUV_SSE2(const uint16_t* rgb, 716 uint8_t* u, uint8_t* v, int width) { 717 const int max_width = width & ~15; 718 const uint16_t* const last_rgb = rgb + 4 * max_width; 719 while (rgb < last_rgb) { 720 __m128i r, g, b, U0, V0, U1, V1; 721 RGBA32PackedToPlanar_16b_SSE2(rgb + 0, &r, &g, &b); 722 ConvertRGBToUV_SSE2(&r, &g, &b, &U0, &V0); 723 RGBA32PackedToPlanar_16b_SSE2(rgb + 32, &r, &g, &b); 724 ConvertRGBToUV_SSE2(&r, &g, &b, &U1, &V1); 725 STORE_16(_mm_packus_epi16(U0, U1), u); 726 STORE_16(_mm_packus_epi16(V0, V1), v); 727 u += 16; 728 v += 16; 729 rgb += 2 * 32; 730 } 731 if (max_width < width) { // left-over 732 WebPConvertRGBA32ToUV_C(rgb, u, v, width - max_width); 733 } 734 } 735 736 //------------------------------------------------------------------------------ 737 738 extern void WebPInitConvertARGBToYUVSSE2(void); 739 740 WEBP_TSAN_IGNORE_FUNCTION void WebPInitConvertARGBToYUVSSE2(void) { 741 WebPConvertARGBToY = ConvertARGBToY_SSE2; 742 WebPConvertARGBToUV = ConvertARGBToUV_SSE2; 743 744 WebPConvertRGB24ToY = ConvertRGB24ToY_SSE2; 745 WebPConvertBGR24ToY = ConvertBGR24ToY_SSE2; 746 747 WebPConvertRGBA32ToUV = ConvertRGBA32ToUV_SSE2; 748 } 749 750 //------------------------------------------------------------------------------ 751 752 #define MAX_Y ((1 << 10) - 1) // 10b precision over 16b-arithmetic 753 static uint16_t clip_y(int v) { 754 return (v < 0) ? 0 : (v > MAX_Y) ? MAX_Y : (uint16_t)v; 755 } 756 757 static uint64_t SharpYUVUpdateY_SSE2(const uint16_t* ref, const uint16_t* src, 758 uint16_t* dst, int len) { 759 uint64_t diff = 0; 760 uint32_t tmp[4]; 761 int i; 762 const __m128i zero = _mm_setzero_si128(); 763 const __m128i max = _mm_set1_epi16(MAX_Y); 764 const __m128i one = _mm_set1_epi16(1); 765 __m128i sum = zero; 766 767 for (i = 0; i + 8 <= len; i += 8) { 768 const __m128i A = _mm_loadu_si128((const __m128i*)(ref + i)); 769 const __m128i B = _mm_loadu_si128((const __m128i*)(src + i)); 770 const __m128i C = _mm_loadu_si128((const __m128i*)(dst + i)); 771 const __m128i D = _mm_sub_epi16(A, B); // diff_y 772 const __m128i E = _mm_cmpgt_epi16(zero, D); // sign (-1 or 0) 773 const __m128i F = _mm_add_epi16(C, D); // new_y 774 const __m128i G = _mm_or_si128(E, one); // -1 or 1 775 const __m128i H = _mm_max_epi16(_mm_min_epi16(F, max), zero); 776 const __m128i I = _mm_madd_epi16(D, G); // sum(abs(...)) 777 _mm_storeu_si128((__m128i*)(dst + i), H); 778 sum = _mm_add_epi32(sum, I); 779 } 780 _mm_storeu_si128((__m128i*)tmp, sum); 781 diff = tmp[3] + tmp[2] + tmp[1] + tmp[0]; 782 for (; i < len; ++i) { 783 const int diff_y = ref[i] - src[i]; 784 const int new_y = (int)dst[i] + diff_y; 785 dst[i] = clip_y(new_y); 786 diff += (uint64_t)abs(diff_y); 787 } 788 return diff; 789 } 790 791 static void SharpYUVUpdateRGB_SSE2(const int16_t* ref, const int16_t* src, 792 int16_t* dst, int len) { 793 int i = 0; 794 for (i = 0; i + 8 <= len; i += 8) { 795 const __m128i A = _mm_loadu_si128((const __m128i*)(ref + i)); 796 const __m128i B = _mm_loadu_si128((const __m128i*)(src + i)); 797 const __m128i C = _mm_loadu_si128((const __m128i*)(dst + i)); 798 const __m128i D = _mm_sub_epi16(A, B); // diff_uv 799 const __m128i E = _mm_add_epi16(C, D); // new_uv 800 _mm_storeu_si128((__m128i*)(dst + i), E); 801 } 802 for (; i < len; ++i) { 803 const int diff_uv = ref[i] - src[i]; 804 dst[i] += diff_uv; 805 } 806 } 807 808 static void SharpYUVFilterRow_SSE2(const int16_t* A, const int16_t* B, int len, 809 const uint16_t* best_y, uint16_t* out) { 810 int i; 811 const __m128i kCst8 = _mm_set1_epi16(8); 812 const __m128i max = _mm_set1_epi16(MAX_Y); 813 const __m128i zero = _mm_setzero_si128(); 814 for (i = 0; i + 8 <= len; i += 8) { 815 const __m128i a0 = _mm_loadu_si128((const __m128i*)(A + i + 0)); 816 const __m128i a1 = _mm_loadu_si128((const __m128i*)(A + i + 1)); 817 const __m128i b0 = _mm_loadu_si128((const __m128i*)(B + i + 0)); 818 const __m128i b1 = _mm_loadu_si128((const __m128i*)(B + i + 1)); 819 const __m128i a0b1 = _mm_add_epi16(a0, b1); 820 const __m128i a1b0 = _mm_add_epi16(a1, b0); 821 const __m128i a0a1b0b1 = _mm_add_epi16(a0b1, a1b0); // A0+A1+B0+B1 822 const __m128i a0a1b0b1_8 = _mm_add_epi16(a0a1b0b1, kCst8); 823 const __m128i a0b1_2 = _mm_add_epi16(a0b1, a0b1); // 2*(A0+B1) 824 const __m128i a1b0_2 = _mm_add_epi16(a1b0, a1b0); // 2*(A1+B0) 825 const __m128i c0 = _mm_srai_epi16(_mm_add_epi16(a0b1_2, a0a1b0b1_8), 3); 826 const __m128i c1 = _mm_srai_epi16(_mm_add_epi16(a1b0_2, a0a1b0b1_8), 3); 827 const __m128i d0 = _mm_add_epi16(c1, a0); 828 const __m128i d1 = _mm_add_epi16(c0, a1); 829 const __m128i e0 = _mm_srai_epi16(d0, 1); 830 const __m128i e1 = _mm_srai_epi16(d1, 1); 831 const __m128i f0 = _mm_unpacklo_epi16(e0, e1); 832 const __m128i f1 = _mm_unpackhi_epi16(e0, e1); 833 const __m128i g0 = _mm_loadu_si128((const __m128i*)(best_y + 2 * i + 0)); 834 const __m128i g1 = _mm_loadu_si128((const __m128i*)(best_y + 2 * i + 8)); 835 const __m128i h0 = _mm_add_epi16(g0, f0); 836 const __m128i h1 = _mm_add_epi16(g1, f1); 837 const __m128i i0 = _mm_max_epi16(_mm_min_epi16(h0, max), zero); 838 const __m128i i1 = _mm_max_epi16(_mm_min_epi16(h1, max), zero); 839 _mm_storeu_si128((__m128i*)(out + 2 * i + 0), i0); 840 _mm_storeu_si128((__m128i*)(out + 2 * i + 8), i1); 841 } 842 for (; i < len; ++i) { 843 // (9 * A0 + 3 * A1 + 3 * B0 + B1 + 8) >> 4 = 844 // = (8 * A0 + 2 * (A1 + B0) + (A0 + A1 + B0 + B1 + 8)) >> 4 845 // We reuse the common sub-expressions. 846 const int a0b1 = A[i + 0] + B[i + 1]; 847 const int a1b0 = A[i + 1] + B[i + 0]; 848 const int a0a1b0b1 = a0b1 + a1b0 + 8; 849 const int v0 = (8 * A[i + 0] + 2 * a1b0 + a0a1b0b1) >> 4; 850 const int v1 = (8 * A[i + 1] + 2 * a0b1 + a0a1b0b1) >> 4; 851 out[2 * i + 0] = clip_y(best_y[2 * i + 0] + v0); 852 out[2 * i + 1] = clip_y(best_y[2 * i + 1] + v1); 853 } 854 } 855 856 #undef MAX_Y 857 858 //------------------------------------------------------------------------------ 859 860 extern void WebPInitSharpYUVSSE2(void); 861 862 WEBP_TSAN_IGNORE_FUNCTION void WebPInitSharpYUVSSE2(void) { 863 WebPSharpYUVUpdateY = SharpYUVUpdateY_SSE2; 864 WebPSharpYUVUpdateRGB = SharpYUVUpdateRGB_SSE2; 865 WebPSharpYUVFilterRow = SharpYUVFilterRow_SSE2; 866 } 867 868 #else // !WEBP_USE_SSE2 869 870 WEBP_DSP_INIT_STUB(WebPInitSamplersSSE2) 871 WEBP_DSP_INIT_STUB(WebPInitConvertARGBToYUVSSE2) 872 WEBP_DSP_INIT_STUB(WebPInitSharpYUVSSE2) 873 874 #endif // WEBP_USE_SSE2 875
