1/* 2 * Copyright (c) 2014 The WebM 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 <assert.h> 12#if defined(_MSC_VER) && _MSC_VER <= 1500 13// Need to include math.h before calling tmmintrin.h/intrin.h 14// in certain versions of MSVS. 15#include <math.h> 16#endif 17#include <tmmintrin.h> // SSSE3 18 19#include "./vp9_rtcd.h" 20#include "vpx_dsp/x86/inv_txfm_sse2.h" 21#include "vpx_dsp/x86/txfm_common_sse2.h" 22 23void vp9_fdct8x8_quant_ssse3(const int16_t *input, int stride, 24 int16_t* coeff_ptr, intptr_t n_coeffs, 25 int skip_block, const int16_t* zbin_ptr, 26 const int16_t* round_ptr, const int16_t* quant_ptr, 27 const int16_t* quant_shift_ptr, 28 int16_t* qcoeff_ptr, 29 int16_t* dqcoeff_ptr, const int16_t* dequant_ptr, 30 uint16_t* eob_ptr, 31 const int16_t* scan_ptr, 32 const int16_t* iscan_ptr) { 33 __m128i zero; 34 int pass; 35 // Constants 36 // When we use them, in one case, they are all the same. In all others 37 // it's a pair of them that we need to repeat four times. This is done 38 // by constructing the 32 bit constant corresponding to that pair. 39 const __m128i k__dual_p16_p16 = dual_set_epi16(23170, 23170); 40 const __m128i k__cospi_p16_p16 = _mm_set1_epi16((int16_t)cospi_16_64); 41 const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64); 42 const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64); 43 const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64); 44 const __m128i k__cospi_p28_p04 = pair_set_epi16(cospi_28_64, cospi_4_64); 45 const __m128i k__cospi_m04_p28 = pair_set_epi16(-cospi_4_64, cospi_28_64); 46 const __m128i k__cospi_p12_p20 = pair_set_epi16(cospi_12_64, cospi_20_64); 47 const __m128i k__cospi_m20_p12 = pair_set_epi16(-cospi_20_64, cospi_12_64); 48 const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); 49 // Load input 50 __m128i in0 = _mm_load_si128((const __m128i *)(input + 0 * stride)); 51 __m128i in1 = _mm_load_si128((const __m128i *)(input + 1 * stride)); 52 __m128i in2 = _mm_load_si128((const __m128i *)(input + 2 * stride)); 53 __m128i in3 = _mm_load_si128((const __m128i *)(input + 3 * stride)); 54 __m128i in4 = _mm_load_si128((const __m128i *)(input + 4 * stride)); 55 __m128i in5 = _mm_load_si128((const __m128i *)(input + 5 * stride)); 56 __m128i in6 = _mm_load_si128((const __m128i *)(input + 6 * stride)); 57 __m128i in7 = _mm_load_si128((const __m128i *)(input + 7 * stride)); 58 __m128i *in[8]; 59 int index = 0; 60 61 (void)scan_ptr; 62 (void)zbin_ptr; 63 (void)quant_shift_ptr; 64 (void)coeff_ptr; 65 66 // Pre-condition input (shift by two) 67 in0 = _mm_slli_epi16(in0, 2); 68 in1 = _mm_slli_epi16(in1, 2); 69 in2 = _mm_slli_epi16(in2, 2); 70 in3 = _mm_slli_epi16(in3, 2); 71 in4 = _mm_slli_epi16(in4, 2); 72 in5 = _mm_slli_epi16(in5, 2); 73 in6 = _mm_slli_epi16(in6, 2); 74 in7 = _mm_slli_epi16(in7, 2); 75 76 in[0] = &in0; 77 in[1] = &in1; 78 in[2] = &in2; 79 in[3] = &in3; 80 in[4] = &in4; 81 in[5] = &in5; 82 in[6] = &in6; 83 in[7] = &in7; 84 85 // We do two passes, first the columns, then the rows. The results of the 86 // first pass are transposed so that the same column code can be reused. The 87 // results of the second pass are also transposed so that the rows (processed 88 // as columns) are put back in row positions. 89 for (pass = 0; pass < 2; pass++) { 90 // To store results of each pass before the transpose. 91 __m128i res0, res1, res2, res3, res4, res5, res6, res7; 92 // Add/subtract 93 const __m128i q0 = _mm_add_epi16(in0, in7); 94 const __m128i q1 = _mm_add_epi16(in1, in6); 95 const __m128i q2 = _mm_add_epi16(in2, in5); 96 const __m128i q3 = _mm_add_epi16(in3, in4); 97 const __m128i q4 = _mm_sub_epi16(in3, in4); 98 const __m128i q5 = _mm_sub_epi16(in2, in5); 99 const __m128i q6 = _mm_sub_epi16(in1, in6); 100 const __m128i q7 = _mm_sub_epi16(in0, in7); 101 // Work on first four results 102 { 103 // Add/subtract 104 const __m128i r0 = _mm_add_epi16(q0, q3); 105 const __m128i r1 = _mm_add_epi16(q1, q2); 106 const __m128i r2 = _mm_sub_epi16(q1, q2); 107 const __m128i r3 = _mm_sub_epi16(q0, q3); 108 // Interleave to do the multiply by constants which gets us into 32bits 109 const __m128i t0 = _mm_unpacklo_epi16(r0, r1); 110 const __m128i t1 = _mm_unpackhi_epi16(r0, r1); 111 const __m128i t2 = _mm_unpacklo_epi16(r2, r3); 112 const __m128i t3 = _mm_unpackhi_epi16(r2, r3); 113 114 const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p16_p16); 115 const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p16_p16); 116 const __m128i u2 = _mm_madd_epi16(t0, k__cospi_p16_m16); 117 const __m128i u3 = _mm_madd_epi16(t1, k__cospi_p16_m16); 118 119 const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p24_p08); 120 const __m128i u5 = _mm_madd_epi16(t3, k__cospi_p24_p08); 121 const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m08_p24); 122 const __m128i u7 = _mm_madd_epi16(t3, k__cospi_m08_p24); 123 // dct_const_round_shift 124 125 const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); 126 const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); 127 const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); 128 const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); 129 130 const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING); 131 const __m128i v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING); 132 const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING); 133 const __m128i v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING); 134 135 const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); 136 const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); 137 const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); 138 const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); 139 140 const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS); 141 const __m128i w5 = _mm_srai_epi32(v5, DCT_CONST_BITS); 142 const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS); 143 const __m128i w7 = _mm_srai_epi32(v7, DCT_CONST_BITS); 144 // Combine 145 146 res0 = _mm_packs_epi32(w0, w1); 147 res4 = _mm_packs_epi32(w2, w3); 148 res2 = _mm_packs_epi32(w4, w5); 149 res6 = _mm_packs_epi32(w6, w7); 150 } 151 // Work on next four results 152 { 153 // Interleave to do the multiply by constants which gets us into 32bits 154 const __m128i d0 = _mm_sub_epi16(q6, q5); 155 const __m128i d1 = _mm_add_epi16(q6, q5); 156 const __m128i r0 = _mm_mulhrs_epi16(d0, k__dual_p16_p16); 157 const __m128i r1 = _mm_mulhrs_epi16(d1, k__dual_p16_p16); 158 159 // Add/subtract 160 const __m128i x0 = _mm_add_epi16(q4, r0); 161 const __m128i x1 = _mm_sub_epi16(q4, r0); 162 const __m128i x2 = _mm_sub_epi16(q7, r1); 163 const __m128i x3 = _mm_add_epi16(q7, r1); 164 // Interleave to do the multiply by constants which gets us into 32bits 165 const __m128i t0 = _mm_unpacklo_epi16(x0, x3); 166 const __m128i t1 = _mm_unpackhi_epi16(x0, x3); 167 const __m128i t2 = _mm_unpacklo_epi16(x1, x2); 168 const __m128i t3 = _mm_unpackhi_epi16(x1, x2); 169 const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p28_p04); 170 const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p28_p04); 171 const __m128i u2 = _mm_madd_epi16(t0, k__cospi_m04_p28); 172 const __m128i u3 = _mm_madd_epi16(t1, k__cospi_m04_p28); 173 const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p12_p20); 174 const __m128i u5 = _mm_madd_epi16(t3, k__cospi_p12_p20); 175 const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m20_p12); 176 const __m128i u7 = _mm_madd_epi16(t3, k__cospi_m20_p12); 177 // dct_const_round_shift 178 const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); 179 const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); 180 const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); 181 const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); 182 const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING); 183 const __m128i v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING); 184 const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING); 185 const __m128i v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING); 186 const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); 187 const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); 188 const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); 189 const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); 190 const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS); 191 const __m128i w5 = _mm_srai_epi32(v5, DCT_CONST_BITS); 192 const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS); 193 const __m128i w7 = _mm_srai_epi32(v7, DCT_CONST_BITS); 194 // Combine 195 res1 = _mm_packs_epi32(w0, w1); 196 res7 = _mm_packs_epi32(w2, w3); 197 res5 = _mm_packs_epi32(w4, w5); 198 res3 = _mm_packs_epi32(w6, w7); 199 } 200 // Transpose the 8x8. 201 { 202 // 00 01 02 03 04 05 06 07 203 // 10 11 12 13 14 15 16 17 204 // 20 21 22 23 24 25 26 27 205 // 30 31 32 33 34 35 36 37 206 // 40 41 42 43 44 45 46 47 207 // 50 51 52 53 54 55 56 57 208 // 60 61 62 63 64 65 66 67 209 // 70 71 72 73 74 75 76 77 210 const __m128i tr0_0 = _mm_unpacklo_epi16(res0, res1); 211 const __m128i tr0_1 = _mm_unpacklo_epi16(res2, res3); 212 const __m128i tr0_2 = _mm_unpackhi_epi16(res0, res1); 213 const __m128i tr0_3 = _mm_unpackhi_epi16(res2, res3); 214 const __m128i tr0_4 = _mm_unpacklo_epi16(res4, res5); 215 const __m128i tr0_5 = _mm_unpacklo_epi16(res6, res7); 216 const __m128i tr0_6 = _mm_unpackhi_epi16(res4, res5); 217 const __m128i tr0_7 = _mm_unpackhi_epi16(res6, res7); 218 // 00 10 01 11 02 12 03 13 219 // 20 30 21 31 22 32 23 33 220 // 04 14 05 15 06 16 07 17 221 // 24 34 25 35 26 36 27 37 222 // 40 50 41 51 42 52 43 53 223 // 60 70 61 71 62 72 63 73 224 // 54 54 55 55 56 56 57 57 225 // 64 74 65 75 66 76 67 77 226 const __m128i tr1_0 = _mm_unpacklo_epi32(tr0_0, tr0_1); 227 const __m128i tr1_1 = _mm_unpacklo_epi32(tr0_2, tr0_3); 228 const __m128i tr1_2 = _mm_unpackhi_epi32(tr0_0, tr0_1); 229 const __m128i tr1_3 = _mm_unpackhi_epi32(tr0_2, tr0_3); 230 const __m128i tr1_4 = _mm_unpacklo_epi32(tr0_4, tr0_5); 231 const __m128i tr1_5 = _mm_unpacklo_epi32(tr0_6, tr0_7); 232 const __m128i tr1_6 = _mm_unpackhi_epi32(tr0_4, tr0_5); 233 const __m128i tr1_7 = _mm_unpackhi_epi32(tr0_6, tr0_7); 234 // 00 10 20 30 01 11 21 31 235 // 40 50 60 70 41 51 61 71 236 // 02 12 22 32 03 13 23 33 237 // 42 52 62 72 43 53 63 73 238 // 04 14 24 34 05 15 21 36 239 // 44 54 64 74 45 55 61 76 240 // 06 16 26 36 07 17 27 37 241 // 46 56 66 76 47 57 67 77 242 in0 = _mm_unpacklo_epi64(tr1_0, tr1_4); 243 in1 = _mm_unpackhi_epi64(tr1_0, tr1_4); 244 in2 = _mm_unpacklo_epi64(tr1_2, tr1_6); 245 in3 = _mm_unpackhi_epi64(tr1_2, tr1_6); 246 in4 = _mm_unpacklo_epi64(tr1_1, tr1_5); 247 in5 = _mm_unpackhi_epi64(tr1_1, tr1_5); 248 in6 = _mm_unpacklo_epi64(tr1_3, tr1_7); 249 in7 = _mm_unpackhi_epi64(tr1_3, tr1_7); 250 // 00 10 20 30 40 50 60 70 251 // 01 11 21 31 41 51 61 71 252 // 02 12 22 32 42 52 62 72 253 // 03 13 23 33 43 53 63 73 254 // 04 14 24 34 44 54 64 74 255 // 05 15 25 35 45 55 65 75 256 // 06 16 26 36 46 56 66 76 257 // 07 17 27 37 47 57 67 77 258 } 259 } 260 // Post-condition output and store it 261 { 262 // Post-condition (division by two) 263 // division of two 16 bits signed numbers using shifts 264 // n / 2 = (n - (n >> 15)) >> 1 265 const __m128i sign_in0 = _mm_srai_epi16(in0, 15); 266 const __m128i sign_in1 = _mm_srai_epi16(in1, 15); 267 const __m128i sign_in2 = _mm_srai_epi16(in2, 15); 268 const __m128i sign_in3 = _mm_srai_epi16(in3, 15); 269 const __m128i sign_in4 = _mm_srai_epi16(in4, 15); 270 const __m128i sign_in5 = _mm_srai_epi16(in5, 15); 271 const __m128i sign_in6 = _mm_srai_epi16(in6, 15); 272 const __m128i sign_in7 = _mm_srai_epi16(in7, 15); 273 in0 = _mm_sub_epi16(in0, sign_in0); 274 in1 = _mm_sub_epi16(in1, sign_in1); 275 in2 = _mm_sub_epi16(in2, sign_in2); 276 in3 = _mm_sub_epi16(in3, sign_in3); 277 in4 = _mm_sub_epi16(in4, sign_in4); 278 in5 = _mm_sub_epi16(in5, sign_in5); 279 in6 = _mm_sub_epi16(in6, sign_in6); 280 in7 = _mm_sub_epi16(in7, sign_in7); 281 in0 = _mm_srai_epi16(in0, 1); 282 in1 = _mm_srai_epi16(in1, 1); 283 in2 = _mm_srai_epi16(in2, 1); 284 in3 = _mm_srai_epi16(in3, 1); 285 in4 = _mm_srai_epi16(in4, 1); 286 in5 = _mm_srai_epi16(in5, 1); 287 in6 = _mm_srai_epi16(in6, 1); 288 in7 = _mm_srai_epi16(in7, 1); 289 } 290 291 iscan_ptr += n_coeffs; 292 qcoeff_ptr += n_coeffs; 293 dqcoeff_ptr += n_coeffs; 294 n_coeffs = -n_coeffs; 295 zero = _mm_setzero_si128(); 296 297 if (!skip_block) { 298 __m128i eob; 299 __m128i round, quant, dequant, thr; 300 int16_t nzflag; 301 { 302 __m128i coeff0, coeff1; 303 304 // Setup global values 305 { 306 round = _mm_load_si128((const __m128i*)round_ptr); 307 quant = _mm_load_si128((const __m128i*)quant_ptr); 308 dequant = _mm_load_si128((const __m128i*)dequant_ptr); 309 } 310 311 { 312 __m128i coeff0_sign, coeff1_sign; 313 __m128i qcoeff0, qcoeff1; 314 __m128i qtmp0, qtmp1; 315 // Do DC and first 15 AC 316 coeff0 = *in[0]; 317 coeff1 = *in[1]; 318 319 // Poor man's sign extract 320 coeff0_sign = _mm_srai_epi16(coeff0, 15); 321 coeff1_sign = _mm_srai_epi16(coeff1, 15); 322 qcoeff0 = _mm_xor_si128(coeff0, coeff0_sign); 323 qcoeff1 = _mm_xor_si128(coeff1, coeff1_sign); 324 qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign); 325 qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign); 326 327 qcoeff0 = _mm_adds_epi16(qcoeff0, round); 328 round = _mm_unpackhi_epi64(round, round); 329 qcoeff1 = _mm_adds_epi16(qcoeff1, round); 330 qtmp0 = _mm_mulhi_epi16(qcoeff0, quant); 331 quant = _mm_unpackhi_epi64(quant, quant); 332 qtmp1 = _mm_mulhi_epi16(qcoeff1, quant); 333 334 // Reinsert signs 335 qcoeff0 = _mm_xor_si128(qtmp0, coeff0_sign); 336 qcoeff1 = _mm_xor_si128(qtmp1, coeff1_sign); 337 qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign); 338 qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign); 339 340 _mm_store_si128((__m128i*)(qcoeff_ptr + n_coeffs), qcoeff0); 341 _mm_store_si128((__m128i*)(qcoeff_ptr + n_coeffs) + 1, qcoeff1); 342 343 coeff0 = _mm_mullo_epi16(qcoeff0, dequant); 344 dequant = _mm_unpackhi_epi64(dequant, dequant); 345 coeff1 = _mm_mullo_epi16(qcoeff1, dequant); 346 347 _mm_store_si128((__m128i*)(dqcoeff_ptr + n_coeffs), coeff0); 348 _mm_store_si128((__m128i*)(dqcoeff_ptr + n_coeffs) + 1, coeff1); 349 } 350 351 { 352 // Scan for eob 353 __m128i zero_coeff0, zero_coeff1; 354 __m128i nzero_coeff0, nzero_coeff1; 355 __m128i iscan0, iscan1; 356 __m128i eob1; 357 zero_coeff0 = _mm_cmpeq_epi16(coeff0, zero); 358 zero_coeff1 = _mm_cmpeq_epi16(coeff1, zero); 359 nzero_coeff0 = _mm_cmpeq_epi16(zero_coeff0, zero); 360 nzero_coeff1 = _mm_cmpeq_epi16(zero_coeff1, zero); 361 iscan0 = _mm_load_si128((const __m128i*)(iscan_ptr + n_coeffs)); 362 iscan1 = _mm_load_si128((const __m128i*)(iscan_ptr + n_coeffs) + 1); 363 // Add one to convert from indices to counts 364 iscan0 = _mm_sub_epi16(iscan0, nzero_coeff0); 365 iscan1 = _mm_sub_epi16(iscan1, nzero_coeff1); 366 eob = _mm_and_si128(iscan0, nzero_coeff0); 367 eob1 = _mm_and_si128(iscan1, nzero_coeff1); 368 eob = _mm_max_epi16(eob, eob1); 369 } 370 n_coeffs += 8 * 2; 371 } 372 373 // AC only loop 374 index = 2; 375 thr = _mm_srai_epi16(dequant, 1); 376 while (n_coeffs < 0) { 377 __m128i coeff0, coeff1; 378 { 379 __m128i coeff0_sign, coeff1_sign; 380 __m128i qcoeff0, qcoeff1; 381 __m128i qtmp0, qtmp1; 382 383 assert(index < (int)(sizeof(in) / sizeof(in[0])) - 1); 384 coeff0 = *in[index]; 385 coeff1 = *in[index + 1]; 386 387 // Poor man's sign extract 388 coeff0_sign = _mm_srai_epi16(coeff0, 15); 389 coeff1_sign = _mm_srai_epi16(coeff1, 15); 390 qcoeff0 = _mm_xor_si128(coeff0, coeff0_sign); 391 qcoeff1 = _mm_xor_si128(coeff1, coeff1_sign); 392 qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign); 393 qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign); 394 395 nzflag = _mm_movemask_epi8(_mm_cmpgt_epi16(qcoeff0, thr)) | 396 _mm_movemask_epi8(_mm_cmpgt_epi16(qcoeff1, thr)); 397 398 if (nzflag) { 399 qcoeff0 = _mm_adds_epi16(qcoeff0, round); 400 qcoeff1 = _mm_adds_epi16(qcoeff1, round); 401 qtmp0 = _mm_mulhi_epi16(qcoeff0, quant); 402 qtmp1 = _mm_mulhi_epi16(qcoeff1, quant); 403 404 // Reinsert signs 405 qcoeff0 = _mm_xor_si128(qtmp0, coeff0_sign); 406 qcoeff1 = _mm_xor_si128(qtmp1, coeff1_sign); 407 qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign); 408 qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign); 409 410 _mm_store_si128((__m128i*)(qcoeff_ptr + n_coeffs), qcoeff0); 411 _mm_store_si128((__m128i*)(qcoeff_ptr + n_coeffs) + 1, qcoeff1); 412 413 coeff0 = _mm_mullo_epi16(qcoeff0, dequant); 414 coeff1 = _mm_mullo_epi16(qcoeff1, dequant); 415 416 _mm_store_si128((__m128i*)(dqcoeff_ptr + n_coeffs), coeff0); 417 _mm_store_si128((__m128i*)(dqcoeff_ptr + n_coeffs) + 1, coeff1); 418 } else { 419 _mm_store_si128((__m128i*)(qcoeff_ptr + n_coeffs), zero); 420 _mm_store_si128((__m128i*)(qcoeff_ptr + n_coeffs) + 1, zero); 421 422 _mm_store_si128((__m128i*)(dqcoeff_ptr + n_coeffs), zero); 423 _mm_store_si128((__m128i*)(dqcoeff_ptr + n_coeffs) + 1, zero); 424 } 425 } 426 427 if (nzflag) { 428 // Scan for eob 429 __m128i zero_coeff0, zero_coeff1; 430 __m128i nzero_coeff0, nzero_coeff1; 431 __m128i iscan0, iscan1; 432 __m128i eob0, eob1; 433 zero_coeff0 = _mm_cmpeq_epi16(coeff0, zero); 434 zero_coeff1 = _mm_cmpeq_epi16(coeff1, zero); 435 nzero_coeff0 = _mm_cmpeq_epi16(zero_coeff0, zero); 436 nzero_coeff1 = _mm_cmpeq_epi16(zero_coeff1, zero); 437 iscan0 = _mm_load_si128((const __m128i*)(iscan_ptr + n_coeffs)); 438 iscan1 = _mm_load_si128((const __m128i*)(iscan_ptr + n_coeffs) + 1); 439 // Add one to convert from indices to counts 440 iscan0 = _mm_sub_epi16(iscan0, nzero_coeff0); 441 iscan1 = _mm_sub_epi16(iscan1, nzero_coeff1); 442 eob0 = _mm_and_si128(iscan0, nzero_coeff0); 443 eob1 = _mm_and_si128(iscan1, nzero_coeff1); 444 eob0 = _mm_max_epi16(eob0, eob1); 445 eob = _mm_max_epi16(eob, eob0); 446 } 447 n_coeffs += 8 * 2; 448 index += 2; 449 } 450 451 // Accumulate EOB 452 { 453 __m128i eob_shuffled; 454 eob_shuffled = _mm_shuffle_epi32(eob, 0xe); 455 eob = _mm_max_epi16(eob, eob_shuffled); 456 eob_shuffled = _mm_shufflelo_epi16(eob, 0xe); 457 eob = _mm_max_epi16(eob, eob_shuffled); 458 eob_shuffled = _mm_shufflelo_epi16(eob, 0x1); 459 eob = _mm_max_epi16(eob, eob_shuffled); 460 *eob_ptr = _mm_extract_epi16(eob, 1); 461 } 462 } else { 463 do { 464 _mm_store_si128((__m128i*)(dqcoeff_ptr + n_coeffs), zero); 465 _mm_store_si128((__m128i*)(dqcoeff_ptr + n_coeffs) + 1, zero); 466 _mm_store_si128((__m128i*)(qcoeff_ptr + n_coeffs), zero); 467 _mm_store_si128((__m128i*)(qcoeff_ptr + n_coeffs) + 1, zero); 468 n_coeffs += 8 * 2; 469 } while (n_coeffs < 0); 470 *eob_ptr = 0; 471 } 472} 473