| /* |
| * Copyright (c) 2016, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 2 Clause License and |
| * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License |
| * was not distributed with this source code in the LICENSE file, you can |
| * obtain it at www.aomedia.org/license/software. If the Alliance for Open |
| * Media Patent License 1.0 was not distributed with this source code in the |
| * PATENTS file, you can obtain it at www.aomedia.org/license/patent. |
| */ |
| |
| #include <immintrin.h> // avx2 |
| |
| #include "./av1_rtcd.h" |
| #include "./aom_dsp_rtcd.h" |
| |
| #include "aom_dsp/x86/fwd_txfm_avx2.h" |
| #include "aom_dsp/txfm_common.h" |
| #include "aom_dsp/x86/txfm_common_avx2.h" |
| |
| static INLINE void load_buffer_16x16(const int16_t *input, int stride, |
| int flipud, int fliplr, __m256i *in) { |
| if (!flipud) { |
| in[0] = _mm256_loadu_si256((const __m256i *)(input + 0 * stride)); |
| in[1] = _mm256_loadu_si256((const __m256i *)(input + 1 * stride)); |
| in[2] = _mm256_loadu_si256((const __m256i *)(input + 2 * stride)); |
| in[3] = _mm256_loadu_si256((const __m256i *)(input + 3 * stride)); |
| in[4] = _mm256_loadu_si256((const __m256i *)(input + 4 * stride)); |
| in[5] = _mm256_loadu_si256((const __m256i *)(input + 5 * stride)); |
| in[6] = _mm256_loadu_si256((const __m256i *)(input + 6 * stride)); |
| in[7] = _mm256_loadu_si256((const __m256i *)(input + 7 * stride)); |
| in[8] = _mm256_loadu_si256((const __m256i *)(input + 8 * stride)); |
| in[9] = _mm256_loadu_si256((const __m256i *)(input + 9 * stride)); |
| in[10] = _mm256_loadu_si256((const __m256i *)(input + 10 * stride)); |
| in[11] = _mm256_loadu_si256((const __m256i *)(input + 11 * stride)); |
| in[12] = _mm256_loadu_si256((const __m256i *)(input + 12 * stride)); |
| in[13] = _mm256_loadu_si256((const __m256i *)(input + 13 * stride)); |
| in[14] = _mm256_loadu_si256((const __m256i *)(input + 14 * stride)); |
| in[15] = _mm256_loadu_si256((const __m256i *)(input + 15 * stride)); |
| } else { |
| in[0] = _mm256_loadu_si256((const __m256i *)(input + 15 * stride)); |
| in[1] = _mm256_loadu_si256((const __m256i *)(input + 14 * stride)); |
| in[2] = _mm256_loadu_si256((const __m256i *)(input + 13 * stride)); |
| in[3] = _mm256_loadu_si256((const __m256i *)(input + 12 * stride)); |
| in[4] = _mm256_loadu_si256((const __m256i *)(input + 11 * stride)); |
| in[5] = _mm256_loadu_si256((const __m256i *)(input + 10 * stride)); |
| in[6] = _mm256_loadu_si256((const __m256i *)(input + 9 * stride)); |
| in[7] = _mm256_loadu_si256((const __m256i *)(input + 8 * stride)); |
| in[8] = _mm256_loadu_si256((const __m256i *)(input + 7 * stride)); |
| in[9] = _mm256_loadu_si256((const __m256i *)(input + 6 * stride)); |
| in[10] = _mm256_loadu_si256((const __m256i *)(input + 5 * stride)); |
| in[11] = _mm256_loadu_si256((const __m256i *)(input + 4 * stride)); |
| in[12] = _mm256_loadu_si256((const __m256i *)(input + 3 * stride)); |
| in[13] = _mm256_loadu_si256((const __m256i *)(input + 2 * stride)); |
| in[14] = _mm256_loadu_si256((const __m256i *)(input + 1 * stride)); |
| in[15] = _mm256_loadu_si256((const __m256i *)(input + 0 * stride)); |
| } |
| |
| if (fliplr) { |
| mm256_reverse_epi16(&in[0]); |
| mm256_reverse_epi16(&in[1]); |
| mm256_reverse_epi16(&in[2]); |
| mm256_reverse_epi16(&in[3]); |
| mm256_reverse_epi16(&in[4]); |
| mm256_reverse_epi16(&in[5]); |
| mm256_reverse_epi16(&in[6]); |
| mm256_reverse_epi16(&in[7]); |
| mm256_reverse_epi16(&in[8]); |
| mm256_reverse_epi16(&in[9]); |
| mm256_reverse_epi16(&in[10]); |
| mm256_reverse_epi16(&in[11]); |
| mm256_reverse_epi16(&in[12]); |
| mm256_reverse_epi16(&in[13]); |
| mm256_reverse_epi16(&in[14]); |
| mm256_reverse_epi16(&in[15]); |
| } |
| |
| in[0] = _mm256_slli_epi16(in[0], 2); |
| in[1] = _mm256_slli_epi16(in[1], 2); |
| in[2] = _mm256_slli_epi16(in[2], 2); |
| in[3] = _mm256_slli_epi16(in[3], 2); |
| in[4] = _mm256_slli_epi16(in[4], 2); |
| in[5] = _mm256_slli_epi16(in[5], 2); |
| in[6] = _mm256_slli_epi16(in[6], 2); |
| in[7] = _mm256_slli_epi16(in[7], 2); |
| in[8] = _mm256_slli_epi16(in[8], 2); |
| in[9] = _mm256_slli_epi16(in[9], 2); |
| in[10] = _mm256_slli_epi16(in[10], 2); |
| in[11] = _mm256_slli_epi16(in[11], 2); |
| in[12] = _mm256_slli_epi16(in[12], 2); |
| in[13] = _mm256_slli_epi16(in[13], 2); |
| in[14] = _mm256_slli_epi16(in[14], 2); |
| in[15] = _mm256_slli_epi16(in[15], 2); |
| } |
| |
| static INLINE void write_buffer_16x16(const __m256i *in, tran_low_t *output) { |
| int i; |
| for (i = 0; i < 16; ++i) { |
| storeu_output_avx2(&in[i], output + (i << 4)); |
| } |
| } |
| |
| static void right_shift_16x16(__m256i *in) { |
| const __m256i one = _mm256_set1_epi16(1); |
| __m256i s0 = _mm256_srai_epi16(in[0], 15); |
| __m256i s1 = _mm256_srai_epi16(in[1], 15); |
| __m256i s2 = _mm256_srai_epi16(in[2], 15); |
| __m256i s3 = _mm256_srai_epi16(in[3], 15); |
| __m256i s4 = _mm256_srai_epi16(in[4], 15); |
| __m256i s5 = _mm256_srai_epi16(in[5], 15); |
| __m256i s6 = _mm256_srai_epi16(in[6], 15); |
| __m256i s7 = _mm256_srai_epi16(in[7], 15); |
| __m256i s8 = _mm256_srai_epi16(in[8], 15); |
| __m256i s9 = _mm256_srai_epi16(in[9], 15); |
| __m256i s10 = _mm256_srai_epi16(in[10], 15); |
| __m256i s11 = _mm256_srai_epi16(in[11], 15); |
| __m256i s12 = _mm256_srai_epi16(in[12], 15); |
| __m256i s13 = _mm256_srai_epi16(in[13], 15); |
| __m256i s14 = _mm256_srai_epi16(in[14], 15); |
| __m256i s15 = _mm256_srai_epi16(in[15], 15); |
| |
| in[0] = _mm256_add_epi16(in[0], one); |
| in[1] = _mm256_add_epi16(in[1], one); |
| in[2] = _mm256_add_epi16(in[2], one); |
| in[3] = _mm256_add_epi16(in[3], one); |
| in[4] = _mm256_add_epi16(in[4], one); |
| in[5] = _mm256_add_epi16(in[5], one); |
| in[6] = _mm256_add_epi16(in[6], one); |
| in[7] = _mm256_add_epi16(in[7], one); |
| in[8] = _mm256_add_epi16(in[8], one); |
| in[9] = _mm256_add_epi16(in[9], one); |
| in[10] = _mm256_add_epi16(in[10], one); |
| in[11] = _mm256_add_epi16(in[11], one); |
| in[12] = _mm256_add_epi16(in[12], one); |
| in[13] = _mm256_add_epi16(in[13], one); |
| in[14] = _mm256_add_epi16(in[14], one); |
| in[15] = _mm256_add_epi16(in[15], one); |
| |
| in[0] = _mm256_sub_epi16(in[0], s0); |
| in[1] = _mm256_sub_epi16(in[1], s1); |
| in[2] = _mm256_sub_epi16(in[2], s2); |
| in[3] = _mm256_sub_epi16(in[3], s3); |
| in[4] = _mm256_sub_epi16(in[4], s4); |
| in[5] = _mm256_sub_epi16(in[5], s5); |
| in[6] = _mm256_sub_epi16(in[6], s6); |
| in[7] = _mm256_sub_epi16(in[7], s7); |
| in[8] = _mm256_sub_epi16(in[8], s8); |
| in[9] = _mm256_sub_epi16(in[9], s9); |
| in[10] = _mm256_sub_epi16(in[10], s10); |
| in[11] = _mm256_sub_epi16(in[11], s11); |
| in[12] = _mm256_sub_epi16(in[12], s12); |
| in[13] = _mm256_sub_epi16(in[13], s13); |
| in[14] = _mm256_sub_epi16(in[14], s14); |
| in[15] = _mm256_sub_epi16(in[15], s15); |
| |
| in[0] = _mm256_srai_epi16(in[0], 2); |
| in[1] = _mm256_srai_epi16(in[1], 2); |
| in[2] = _mm256_srai_epi16(in[2], 2); |
| in[3] = _mm256_srai_epi16(in[3], 2); |
| in[4] = _mm256_srai_epi16(in[4], 2); |
| in[5] = _mm256_srai_epi16(in[5], 2); |
| in[6] = _mm256_srai_epi16(in[6], 2); |
| in[7] = _mm256_srai_epi16(in[7], 2); |
| in[8] = _mm256_srai_epi16(in[8], 2); |
| in[9] = _mm256_srai_epi16(in[9], 2); |
| in[10] = _mm256_srai_epi16(in[10], 2); |
| in[11] = _mm256_srai_epi16(in[11], 2); |
| in[12] = _mm256_srai_epi16(in[12], 2); |
| in[13] = _mm256_srai_epi16(in[13], 2); |
| in[14] = _mm256_srai_epi16(in[14], 2); |
| in[15] = _mm256_srai_epi16(in[15], 2); |
| } |
| |
| static void fdct16_avx2(__m256i *in) { |
| // sequence: cospi_L_H = pairs(L, H) and L first |
| const __m256i cospi_p16_m16 = pair256_set_epi16(cospi_16_64, -cospi_16_64); |
| const __m256i cospi_p16_p16 = pair256_set_epi16(cospi_16_64, cospi_16_64); |
| const __m256i cospi_p24_p08 = pair256_set_epi16(cospi_24_64, cospi_8_64); |
| const __m256i cospi_m08_p24 = pair256_set_epi16(-cospi_8_64, cospi_24_64); |
| const __m256i cospi_m24_m08 = pair256_set_epi16(-cospi_24_64, -cospi_8_64); |
| |
| const __m256i cospi_p28_p04 = pair256_set_epi16(cospi_28_64, cospi_4_64); |
| const __m256i cospi_m04_p28 = pair256_set_epi16(-cospi_4_64, cospi_28_64); |
| const __m256i cospi_p12_p20 = pair256_set_epi16(cospi_12_64, cospi_20_64); |
| const __m256i cospi_m20_p12 = pair256_set_epi16(-cospi_20_64, cospi_12_64); |
| |
| const __m256i cospi_p30_p02 = pair256_set_epi16(cospi_30_64, cospi_2_64); |
| const __m256i cospi_m02_p30 = pair256_set_epi16(-cospi_2_64, cospi_30_64); |
| |
| const __m256i cospi_p14_p18 = pair256_set_epi16(cospi_14_64, cospi_18_64); |
| const __m256i cospi_m18_p14 = pair256_set_epi16(-cospi_18_64, cospi_14_64); |
| |
| const __m256i cospi_p22_p10 = pair256_set_epi16(cospi_22_64, cospi_10_64); |
| const __m256i cospi_m10_p22 = pair256_set_epi16(-cospi_10_64, cospi_22_64); |
| |
| const __m256i cospi_p06_p26 = pair256_set_epi16(cospi_6_64, cospi_26_64); |
| const __m256i cospi_m26_p06 = pair256_set_epi16(-cospi_26_64, cospi_6_64); |
| |
| __m256i u0, u1, u2, u3, u4, u5, u6, u7; |
| __m256i s0, s1, s2, s3, s4, s5, s6, s7; |
| __m256i t0, t1, t2, t3, t4, t5, t6, t7; |
| __m256i v0, v1, v2, v3; |
| __m256i x0, x1; |
| |
| // 0, 4, 8, 12 |
| u0 = _mm256_add_epi16(in[0], in[15]); |
| u1 = _mm256_add_epi16(in[1], in[14]); |
| u2 = _mm256_add_epi16(in[2], in[13]); |
| u3 = _mm256_add_epi16(in[3], in[12]); |
| u4 = _mm256_add_epi16(in[4], in[11]); |
| u5 = _mm256_add_epi16(in[5], in[10]); |
| u6 = _mm256_add_epi16(in[6], in[9]); |
| u7 = _mm256_add_epi16(in[7], in[8]); |
| |
| s0 = _mm256_add_epi16(u0, u7); |
| s1 = _mm256_add_epi16(u1, u6); |
| s2 = _mm256_add_epi16(u2, u5); |
| s3 = _mm256_add_epi16(u3, u4); |
| |
| // 0, 8 |
| v0 = _mm256_add_epi16(s0, s3); |
| v1 = _mm256_add_epi16(s1, s2); |
| |
| x0 = _mm256_unpacklo_epi16(v0, v1); |
| x1 = _mm256_unpackhi_epi16(v0, v1); |
| |
| t0 = butter_fly(&x0, &x1, &cospi_p16_p16); |
| t1 = butter_fly(&x0, &x1, &cospi_p16_m16); |
| |
| // 4, 12 |
| v0 = _mm256_sub_epi16(s1, s2); |
| v1 = _mm256_sub_epi16(s0, s3); |
| |
| x0 = _mm256_unpacklo_epi16(v0, v1); |
| x1 = _mm256_unpackhi_epi16(v0, v1); |
| |
| t2 = butter_fly(&x0, &x1, &cospi_p24_p08); |
| t3 = butter_fly(&x0, &x1, &cospi_m08_p24); |
| |
| // 2, 6, 10, 14 |
| s0 = _mm256_sub_epi16(u3, u4); |
| s1 = _mm256_sub_epi16(u2, u5); |
| s2 = _mm256_sub_epi16(u1, u6); |
| s3 = _mm256_sub_epi16(u0, u7); |
| |
| v0 = s0; // output[4] |
| v3 = s3; // output[7] |
| |
| x0 = _mm256_unpacklo_epi16(s2, s1); |
| x1 = _mm256_unpackhi_epi16(s2, s1); |
| |
| v2 = butter_fly(&x0, &x1, &cospi_p16_p16); // output[5] |
| v1 = butter_fly(&x0, &x1, &cospi_p16_m16); // output[6] |
| |
| s0 = _mm256_add_epi16(v0, v1); // step[4] |
| s1 = _mm256_sub_epi16(v0, v1); // step[5] |
| s2 = _mm256_sub_epi16(v3, v2); // step[6] |
| s3 = _mm256_add_epi16(v3, v2); // step[7] |
| |
| // 2, 14 |
| x0 = _mm256_unpacklo_epi16(s0, s3); |
| x1 = _mm256_unpackhi_epi16(s0, s3); |
| |
| t4 = butter_fly(&x0, &x1, &cospi_p28_p04); |
| t5 = butter_fly(&x0, &x1, &cospi_m04_p28); |
| |
| // 10, 6 |
| x0 = _mm256_unpacklo_epi16(s1, s2); |
| x1 = _mm256_unpackhi_epi16(s1, s2); |
| t6 = butter_fly(&x0, &x1, &cospi_p12_p20); |
| t7 = butter_fly(&x0, &x1, &cospi_m20_p12); |
| |
| // 1, 3, 5, 7, 9, 11, 13, 15 |
| s0 = _mm256_sub_epi16(in[7], in[8]); // step[8] |
| s1 = _mm256_sub_epi16(in[6], in[9]); // step[9] |
| u2 = _mm256_sub_epi16(in[5], in[10]); |
| u3 = _mm256_sub_epi16(in[4], in[11]); |
| u4 = _mm256_sub_epi16(in[3], in[12]); |
| u5 = _mm256_sub_epi16(in[2], in[13]); |
| s6 = _mm256_sub_epi16(in[1], in[14]); // step[14] |
| s7 = _mm256_sub_epi16(in[0], in[15]); // step[15] |
| |
| in[0] = t0; |
| in[8] = t1; |
| in[4] = t2; |
| in[12] = t3; |
| in[2] = t4; |
| in[14] = t5; |
| in[10] = t6; |
| in[6] = t7; |
| |
| x0 = _mm256_unpacklo_epi16(u5, u2); |
| x1 = _mm256_unpackhi_epi16(u5, u2); |
| |
| s2 = butter_fly(&x0, &x1, &cospi_p16_p16); // step[13] |
| s5 = butter_fly(&x0, &x1, &cospi_p16_m16); // step[10] |
| |
| x0 = _mm256_unpacklo_epi16(u4, u3); |
| x1 = _mm256_unpackhi_epi16(u4, u3); |
| |
| s3 = butter_fly(&x0, &x1, &cospi_p16_p16); // step[12] |
| s4 = butter_fly(&x0, &x1, &cospi_p16_m16); // step[11] |
| |
| u0 = _mm256_add_epi16(s0, s4); // output[8] |
| u1 = _mm256_add_epi16(s1, s5); |
| u2 = _mm256_sub_epi16(s1, s5); |
| u3 = _mm256_sub_epi16(s0, s4); |
| u4 = _mm256_sub_epi16(s7, s3); |
| u5 = _mm256_sub_epi16(s6, s2); |
| u6 = _mm256_add_epi16(s6, s2); |
| u7 = _mm256_add_epi16(s7, s3); |
| |
| // stage 4 |
| s0 = u0; |
| s3 = u3; |
| s4 = u4; |
| s7 = u7; |
| |
| x0 = _mm256_unpacklo_epi16(u1, u6); |
| x1 = _mm256_unpackhi_epi16(u1, u6); |
| |
| s1 = butter_fly(&x0, &x1, &cospi_m08_p24); |
| s6 = butter_fly(&x0, &x1, &cospi_p24_p08); |
| |
| x0 = _mm256_unpacklo_epi16(u2, u5); |
| x1 = _mm256_unpackhi_epi16(u2, u5); |
| |
| s2 = butter_fly(&x0, &x1, &cospi_m24_m08); |
| s5 = butter_fly(&x0, &x1, &cospi_m08_p24); |
| |
| // stage 5 |
| u0 = _mm256_add_epi16(s0, s1); |
| u1 = _mm256_sub_epi16(s0, s1); |
| u2 = _mm256_sub_epi16(s3, s2); |
| u3 = _mm256_add_epi16(s3, s2); |
| u4 = _mm256_add_epi16(s4, s5); |
| u5 = _mm256_sub_epi16(s4, s5); |
| u6 = _mm256_sub_epi16(s7, s6); |
| u7 = _mm256_add_epi16(s7, s6); |
| |
| // stage 6 |
| x0 = _mm256_unpacklo_epi16(u0, u7); |
| x1 = _mm256_unpackhi_epi16(u0, u7); |
| in[1] = butter_fly(&x0, &x1, &cospi_p30_p02); |
| in[15] = butter_fly(&x0, &x1, &cospi_m02_p30); |
| |
| x0 = _mm256_unpacklo_epi16(u1, u6); |
| x1 = _mm256_unpackhi_epi16(u1, u6); |
| in[9] = butter_fly(&x0, &x1, &cospi_p14_p18); |
| in[7] = butter_fly(&x0, &x1, &cospi_m18_p14); |
| |
| x0 = _mm256_unpacklo_epi16(u2, u5); |
| x1 = _mm256_unpackhi_epi16(u2, u5); |
| in[5] = butter_fly(&x0, &x1, &cospi_p22_p10); |
| in[11] = butter_fly(&x0, &x1, &cospi_m10_p22); |
| |
| x0 = _mm256_unpacklo_epi16(u3, u4); |
| x1 = _mm256_unpackhi_epi16(u3, u4); |
| in[13] = butter_fly(&x0, &x1, &cospi_p06_p26); |
| in[3] = butter_fly(&x0, &x1, &cospi_m26_p06); |
| } |
| |
| void fadst16_avx2(__m256i *in) { |
| const __m256i cospi_p01_p31 = pair256_set_epi16(cospi_1_64, cospi_31_64); |
| const __m256i cospi_p31_m01 = pair256_set_epi16(cospi_31_64, -cospi_1_64); |
| const __m256i cospi_p05_p27 = pair256_set_epi16(cospi_5_64, cospi_27_64); |
| const __m256i cospi_p27_m05 = pair256_set_epi16(cospi_27_64, -cospi_5_64); |
| const __m256i cospi_p09_p23 = pair256_set_epi16(cospi_9_64, cospi_23_64); |
| const __m256i cospi_p23_m09 = pair256_set_epi16(cospi_23_64, -cospi_9_64); |
| const __m256i cospi_p13_p19 = pair256_set_epi16(cospi_13_64, cospi_19_64); |
| const __m256i cospi_p19_m13 = pair256_set_epi16(cospi_19_64, -cospi_13_64); |
| const __m256i cospi_p17_p15 = pair256_set_epi16(cospi_17_64, cospi_15_64); |
| const __m256i cospi_p15_m17 = pair256_set_epi16(cospi_15_64, -cospi_17_64); |
| const __m256i cospi_p21_p11 = pair256_set_epi16(cospi_21_64, cospi_11_64); |
| const __m256i cospi_p11_m21 = pair256_set_epi16(cospi_11_64, -cospi_21_64); |
| const __m256i cospi_p25_p07 = pair256_set_epi16(cospi_25_64, cospi_7_64); |
| const __m256i cospi_p07_m25 = pair256_set_epi16(cospi_7_64, -cospi_25_64); |
| const __m256i cospi_p29_p03 = pair256_set_epi16(cospi_29_64, cospi_3_64); |
| const __m256i cospi_p03_m29 = pair256_set_epi16(cospi_3_64, -cospi_29_64); |
| const __m256i cospi_p04_p28 = pair256_set_epi16(cospi_4_64, cospi_28_64); |
| const __m256i cospi_p28_m04 = pair256_set_epi16(cospi_28_64, -cospi_4_64); |
| const __m256i cospi_p20_p12 = pair256_set_epi16(cospi_20_64, cospi_12_64); |
| const __m256i cospi_p12_m20 = pair256_set_epi16(cospi_12_64, -cospi_20_64); |
| const __m256i cospi_m28_p04 = pair256_set_epi16(-cospi_28_64, cospi_4_64); |
| const __m256i cospi_m12_p20 = pair256_set_epi16(-cospi_12_64, cospi_20_64); |
| const __m256i cospi_p08_p24 = pair256_set_epi16(cospi_8_64, cospi_24_64); |
| const __m256i cospi_p24_m08 = pair256_set_epi16(cospi_24_64, -cospi_8_64); |
| const __m256i cospi_m24_p08 = pair256_set_epi16(-cospi_24_64, cospi_8_64); |
| const __m256i cospi_m16_m16 = _mm256_set1_epi16((int16_t)-cospi_16_64); |
| const __m256i cospi_p16_p16 = _mm256_set1_epi16((int16_t)cospi_16_64); |
| const __m256i cospi_p16_m16 = pair256_set_epi16(cospi_16_64, -cospi_16_64); |
| const __m256i cospi_m16_p16 = pair256_set_epi16(-cospi_16_64, cospi_16_64); |
| const __m256i zero = _mm256_setzero_si256(); |
| const __m256i dct_rounding = _mm256_set1_epi32(DCT_CONST_ROUNDING); |
| __m256i s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11, s12, s13, s14, s15; |
| __m256i x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15; |
| __m256i u0, u1, u2, u3, u4, u5, u6, u7, u8, u9, u10, u11, u12, u13, u14, u15; |
| __m256i v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15; |
| __m256i y0, y1; |
| |
| // stage 1, s takes low 256 bits; x takes high 256 bits |
| y0 = _mm256_unpacklo_epi16(in[15], in[0]); |
| y1 = _mm256_unpackhi_epi16(in[15], in[0]); |
| s0 = _mm256_madd_epi16(y0, cospi_p01_p31); |
| x0 = _mm256_madd_epi16(y1, cospi_p01_p31); |
| s1 = _mm256_madd_epi16(y0, cospi_p31_m01); |
| x1 = _mm256_madd_epi16(y1, cospi_p31_m01); |
| |
| y0 = _mm256_unpacklo_epi16(in[13], in[2]); |
| y1 = _mm256_unpackhi_epi16(in[13], in[2]); |
| s2 = _mm256_madd_epi16(y0, cospi_p05_p27); |
| x2 = _mm256_madd_epi16(y1, cospi_p05_p27); |
| s3 = _mm256_madd_epi16(y0, cospi_p27_m05); |
| x3 = _mm256_madd_epi16(y1, cospi_p27_m05); |
| |
| y0 = _mm256_unpacklo_epi16(in[11], in[4]); |
| y1 = _mm256_unpackhi_epi16(in[11], in[4]); |
| s4 = _mm256_madd_epi16(y0, cospi_p09_p23); |
| x4 = _mm256_madd_epi16(y1, cospi_p09_p23); |
| s5 = _mm256_madd_epi16(y0, cospi_p23_m09); |
| x5 = _mm256_madd_epi16(y1, cospi_p23_m09); |
| |
| y0 = _mm256_unpacklo_epi16(in[9], in[6]); |
| y1 = _mm256_unpackhi_epi16(in[9], in[6]); |
| s6 = _mm256_madd_epi16(y0, cospi_p13_p19); |
| x6 = _mm256_madd_epi16(y1, cospi_p13_p19); |
| s7 = _mm256_madd_epi16(y0, cospi_p19_m13); |
| x7 = _mm256_madd_epi16(y1, cospi_p19_m13); |
| |
| y0 = _mm256_unpacklo_epi16(in[7], in[8]); |
| y1 = _mm256_unpackhi_epi16(in[7], in[8]); |
| s8 = _mm256_madd_epi16(y0, cospi_p17_p15); |
| x8 = _mm256_madd_epi16(y1, cospi_p17_p15); |
| s9 = _mm256_madd_epi16(y0, cospi_p15_m17); |
| x9 = _mm256_madd_epi16(y1, cospi_p15_m17); |
| |
| y0 = _mm256_unpacklo_epi16(in[5], in[10]); |
| y1 = _mm256_unpackhi_epi16(in[5], in[10]); |
| s10 = _mm256_madd_epi16(y0, cospi_p21_p11); |
| x10 = _mm256_madd_epi16(y1, cospi_p21_p11); |
| s11 = _mm256_madd_epi16(y0, cospi_p11_m21); |
| x11 = _mm256_madd_epi16(y1, cospi_p11_m21); |
| |
| y0 = _mm256_unpacklo_epi16(in[3], in[12]); |
| y1 = _mm256_unpackhi_epi16(in[3], in[12]); |
| s12 = _mm256_madd_epi16(y0, cospi_p25_p07); |
| x12 = _mm256_madd_epi16(y1, cospi_p25_p07); |
| s13 = _mm256_madd_epi16(y0, cospi_p07_m25); |
| x13 = _mm256_madd_epi16(y1, cospi_p07_m25); |
| |
| y0 = _mm256_unpacklo_epi16(in[1], in[14]); |
| y1 = _mm256_unpackhi_epi16(in[1], in[14]); |
| s14 = _mm256_madd_epi16(y0, cospi_p29_p03); |
| x14 = _mm256_madd_epi16(y1, cospi_p29_p03); |
| s15 = _mm256_madd_epi16(y0, cospi_p03_m29); |
| x15 = _mm256_madd_epi16(y1, cospi_p03_m29); |
| |
| // u takes low 256 bits; v takes high 256 bits |
| u0 = _mm256_add_epi32(s0, s8); |
| u1 = _mm256_add_epi32(s1, s9); |
| u2 = _mm256_add_epi32(s2, s10); |
| u3 = _mm256_add_epi32(s3, s11); |
| u4 = _mm256_add_epi32(s4, s12); |
| u5 = _mm256_add_epi32(s5, s13); |
| u6 = _mm256_add_epi32(s6, s14); |
| u7 = _mm256_add_epi32(s7, s15); |
| |
| u8 = _mm256_sub_epi32(s0, s8); |
| u9 = _mm256_sub_epi32(s1, s9); |
| u10 = _mm256_sub_epi32(s2, s10); |
| u11 = _mm256_sub_epi32(s3, s11); |
| u12 = _mm256_sub_epi32(s4, s12); |
| u13 = _mm256_sub_epi32(s5, s13); |
| u14 = _mm256_sub_epi32(s6, s14); |
| u15 = _mm256_sub_epi32(s7, s15); |
| |
| v0 = _mm256_add_epi32(x0, x8); |
| v1 = _mm256_add_epi32(x1, x9); |
| v2 = _mm256_add_epi32(x2, x10); |
| v3 = _mm256_add_epi32(x3, x11); |
| v4 = _mm256_add_epi32(x4, x12); |
| v5 = _mm256_add_epi32(x5, x13); |
| v6 = _mm256_add_epi32(x6, x14); |
| v7 = _mm256_add_epi32(x7, x15); |
| |
| v8 = _mm256_sub_epi32(x0, x8); |
| v9 = _mm256_sub_epi32(x1, x9); |
| v10 = _mm256_sub_epi32(x2, x10); |
| v11 = _mm256_sub_epi32(x3, x11); |
| v12 = _mm256_sub_epi32(x4, x12); |
| v13 = _mm256_sub_epi32(x5, x13); |
| v14 = _mm256_sub_epi32(x6, x14); |
| v15 = _mm256_sub_epi32(x7, x15); |
| |
| // low 256 bits rounding |
| u8 = _mm256_add_epi32(u8, dct_rounding); |
| u9 = _mm256_add_epi32(u9, dct_rounding); |
| u10 = _mm256_add_epi32(u10, dct_rounding); |
| u11 = _mm256_add_epi32(u11, dct_rounding); |
| u12 = _mm256_add_epi32(u12, dct_rounding); |
| u13 = _mm256_add_epi32(u13, dct_rounding); |
| u14 = _mm256_add_epi32(u14, dct_rounding); |
| u15 = _mm256_add_epi32(u15, dct_rounding); |
| |
| u8 = _mm256_srai_epi32(u8, DCT_CONST_BITS); |
| u9 = _mm256_srai_epi32(u9, DCT_CONST_BITS); |
| u10 = _mm256_srai_epi32(u10, DCT_CONST_BITS); |
| u11 = _mm256_srai_epi32(u11, DCT_CONST_BITS); |
| u12 = _mm256_srai_epi32(u12, DCT_CONST_BITS); |
| u13 = _mm256_srai_epi32(u13, DCT_CONST_BITS); |
| u14 = _mm256_srai_epi32(u14, DCT_CONST_BITS); |
| u15 = _mm256_srai_epi32(u15, DCT_CONST_BITS); |
| |
| // high 256 bits rounding |
| v8 = _mm256_add_epi32(v8, dct_rounding); |
| v9 = _mm256_add_epi32(v9, dct_rounding); |
| v10 = _mm256_add_epi32(v10, dct_rounding); |
| v11 = _mm256_add_epi32(v11, dct_rounding); |
| v12 = _mm256_add_epi32(v12, dct_rounding); |
| v13 = _mm256_add_epi32(v13, dct_rounding); |
| v14 = _mm256_add_epi32(v14, dct_rounding); |
| v15 = _mm256_add_epi32(v15, dct_rounding); |
| |
| v8 = _mm256_srai_epi32(v8, DCT_CONST_BITS); |
| v9 = _mm256_srai_epi32(v9, DCT_CONST_BITS); |
| v10 = _mm256_srai_epi32(v10, DCT_CONST_BITS); |
| v11 = _mm256_srai_epi32(v11, DCT_CONST_BITS); |
| v12 = _mm256_srai_epi32(v12, DCT_CONST_BITS); |
| v13 = _mm256_srai_epi32(v13, DCT_CONST_BITS); |
| v14 = _mm256_srai_epi32(v14, DCT_CONST_BITS); |
| v15 = _mm256_srai_epi32(v15, DCT_CONST_BITS); |
| |
| // Saturation pack 32-bit to 16-bit |
| x8 = _mm256_packs_epi32(u8, v8); |
| x9 = _mm256_packs_epi32(u9, v9); |
| x10 = _mm256_packs_epi32(u10, v10); |
| x11 = _mm256_packs_epi32(u11, v11); |
| x12 = _mm256_packs_epi32(u12, v12); |
| x13 = _mm256_packs_epi32(u13, v13); |
| x14 = _mm256_packs_epi32(u14, v14); |
| x15 = _mm256_packs_epi32(u15, v15); |
| |
| // stage 2 |
| y0 = _mm256_unpacklo_epi16(x8, x9); |
| y1 = _mm256_unpackhi_epi16(x8, x9); |
| s8 = _mm256_madd_epi16(y0, cospi_p04_p28); |
| x8 = _mm256_madd_epi16(y1, cospi_p04_p28); |
| s9 = _mm256_madd_epi16(y0, cospi_p28_m04); |
| x9 = _mm256_madd_epi16(y1, cospi_p28_m04); |
| |
| y0 = _mm256_unpacklo_epi16(x10, x11); |
| y1 = _mm256_unpackhi_epi16(x10, x11); |
| s10 = _mm256_madd_epi16(y0, cospi_p20_p12); |
| x10 = _mm256_madd_epi16(y1, cospi_p20_p12); |
| s11 = _mm256_madd_epi16(y0, cospi_p12_m20); |
| x11 = _mm256_madd_epi16(y1, cospi_p12_m20); |
| |
| y0 = _mm256_unpacklo_epi16(x12, x13); |
| y1 = _mm256_unpackhi_epi16(x12, x13); |
| s12 = _mm256_madd_epi16(y0, cospi_m28_p04); |
| x12 = _mm256_madd_epi16(y1, cospi_m28_p04); |
| s13 = _mm256_madd_epi16(y0, cospi_p04_p28); |
| x13 = _mm256_madd_epi16(y1, cospi_p04_p28); |
| |
| y0 = _mm256_unpacklo_epi16(x14, x15); |
| y1 = _mm256_unpackhi_epi16(x14, x15); |
| s14 = _mm256_madd_epi16(y0, cospi_m12_p20); |
| x14 = _mm256_madd_epi16(y1, cospi_m12_p20); |
| s15 = _mm256_madd_epi16(y0, cospi_p20_p12); |
| x15 = _mm256_madd_epi16(y1, cospi_p20_p12); |
| |
| x0 = _mm256_add_epi32(u0, u4); |
| s0 = _mm256_add_epi32(v0, v4); |
| x1 = _mm256_add_epi32(u1, u5); |
| s1 = _mm256_add_epi32(v1, v5); |
| x2 = _mm256_add_epi32(u2, u6); |
| s2 = _mm256_add_epi32(v2, v6); |
| x3 = _mm256_add_epi32(u3, u7); |
| s3 = _mm256_add_epi32(v3, v7); |
| |
| v8 = _mm256_sub_epi32(u0, u4); |
| v9 = _mm256_sub_epi32(v0, v4); |
| v10 = _mm256_sub_epi32(u1, u5); |
| v11 = _mm256_sub_epi32(v1, v5); |
| v12 = _mm256_sub_epi32(u2, u6); |
| v13 = _mm256_sub_epi32(v2, v6); |
| v14 = _mm256_sub_epi32(u3, u7); |
| v15 = _mm256_sub_epi32(v3, v7); |
| |
| v8 = _mm256_add_epi32(v8, dct_rounding); |
| v9 = _mm256_add_epi32(v9, dct_rounding); |
| v10 = _mm256_add_epi32(v10, dct_rounding); |
| v11 = _mm256_add_epi32(v11, dct_rounding); |
| v12 = _mm256_add_epi32(v12, dct_rounding); |
| v13 = _mm256_add_epi32(v13, dct_rounding); |
| v14 = _mm256_add_epi32(v14, dct_rounding); |
| v15 = _mm256_add_epi32(v15, dct_rounding); |
| |
| v8 = _mm256_srai_epi32(v8, DCT_CONST_BITS); |
| v9 = _mm256_srai_epi32(v9, DCT_CONST_BITS); |
| v10 = _mm256_srai_epi32(v10, DCT_CONST_BITS); |
| v11 = _mm256_srai_epi32(v11, DCT_CONST_BITS); |
| v12 = _mm256_srai_epi32(v12, DCT_CONST_BITS); |
| v13 = _mm256_srai_epi32(v13, DCT_CONST_BITS); |
| v14 = _mm256_srai_epi32(v14, DCT_CONST_BITS); |
| v15 = _mm256_srai_epi32(v15, DCT_CONST_BITS); |
| |
| x4 = _mm256_packs_epi32(v8, v9); |
| x5 = _mm256_packs_epi32(v10, v11); |
| x6 = _mm256_packs_epi32(v12, v13); |
| x7 = _mm256_packs_epi32(v14, v15); |
| |
| u8 = _mm256_add_epi32(s8, s12); |
| u9 = _mm256_add_epi32(s9, s13); |
| u10 = _mm256_add_epi32(s10, s14); |
| u11 = _mm256_add_epi32(s11, s15); |
| u12 = _mm256_sub_epi32(s8, s12); |
| u13 = _mm256_sub_epi32(s9, s13); |
| u14 = _mm256_sub_epi32(s10, s14); |
| u15 = _mm256_sub_epi32(s11, s15); |
| |
| v8 = _mm256_add_epi32(x8, x12); |
| v9 = _mm256_add_epi32(x9, x13); |
| v10 = _mm256_add_epi32(x10, x14); |
| v11 = _mm256_add_epi32(x11, x15); |
| v12 = _mm256_sub_epi32(x8, x12); |
| v13 = _mm256_sub_epi32(x9, x13); |
| v14 = _mm256_sub_epi32(x10, x14); |
| v15 = _mm256_sub_epi32(x11, x15); |
| |
| u12 = _mm256_add_epi32(u12, dct_rounding); |
| u13 = _mm256_add_epi32(u13, dct_rounding); |
| u14 = _mm256_add_epi32(u14, dct_rounding); |
| u15 = _mm256_add_epi32(u15, dct_rounding); |
| |
| u12 = _mm256_srai_epi32(u12, DCT_CONST_BITS); |
| u13 = _mm256_srai_epi32(u13, DCT_CONST_BITS); |
| u14 = _mm256_srai_epi32(u14, DCT_CONST_BITS); |
| u15 = _mm256_srai_epi32(u15, DCT_CONST_BITS); |
| |
| v12 = _mm256_add_epi32(v12, dct_rounding); |
| v13 = _mm256_add_epi32(v13, dct_rounding); |
| v14 = _mm256_add_epi32(v14, dct_rounding); |
| v15 = _mm256_add_epi32(v15, dct_rounding); |
| |
| v12 = _mm256_srai_epi32(v12, DCT_CONST_BITS); |
| v13 = _mm256_srai_epi32(v13, DCT_CONST_BITS); |
| v14 = _mm256_srai_epi32(v14, DCT_CONST_BITS); |
| v15 = _mm256_srai_epi32(v15, DCT_CONST_BITS); |
| |
| x12 = _mm256_packs_epi32(u12, v12); |
| x13 = _mm256_packs_epi32(u13, v13); |
| x14 = _mm256_packs_epi32(u14, v14); |
| x15 = _mm256_packs_epi32(u15, v15); |
| |
| // stage 3 |
| y0 = _mm256_unpacklo_epi16(x4, x5); |
| y1 = _mm256_unpackhi_epi16(x4, x5); |
| s4 = _mm256_madd_epi16(y0, cospi_p08_p24); |
| x4 = _mm256_madd_epi16(y1, cospi_p08_p24); |
| s5 = _mm256_madd_epi16(y0, cospi_p24_m08); |
| x5 = _mm256_madd_epi16(y1, cospi_p24_m08); |
| |
| y0 = _mm256_unpacklo_epi16(x6, x7); |
| y1 = _mm256_unpackhi_epi16(x6, x7); |
| s6 = _mm256_madd_epi16(y0, cospi_m24_p08); |
| x6 = _mm256_madd_epi16(y1, cospi_m24_p08); |
| s7 = _mm256_madd_epi16(y0, cospi_p08_p24); |
| x7 = _mm256_madd_epi16(y1, cospi_p08_p24); |
| |
| y0 = _mm256_unpacklo_epi16(x12, x13); |
| y1 = _mm256_unpackhi_epi16(x12, x13); |
| s12 = _mm256_madd_epi16(y0, cospi_p08_p24); |
| x12 = _mm256_madd_epi16(y1, cospi_p08_p24); |
| s13 = _mm256_madd_epi16(y0, cospi_p24_m08); |
| x13 = _mm256_madd_epi16(y1, cospi_p24_m08); |
| |
| y0 = _mm256_unpacklo_epi16(x14, x15); |
| y1 = _mm256_unpackhi_epi16(x14, x15); |
| s14 = _mm256_madd_epi16(y0, cospi_m24_p08); |
| x14 = _mm256_madd_epi16(y1, cospi_m24_p08); |
| s15 = _mm256_madd_epi16(y0, cospi_p08_p24); |
| x15 = _mm256_madd_epi16(y1, cospi_p08_p24); |
| |
| u0 = _mm256_add_epi32(x0, x2); |
| v0 = _mm256_add_epi32(s0, s2); |
| u1 = _mm256_add_epi32(x1, x3); |
| v1 = _mm256_add_epi32(s1, s3); |
| u2 = _mm256_sub_epi32(x0, x2); |
| v2 = _mm256_sub_epi32(s0, s2); |
| u3 = _mm256_sub_epi32(x1, x3); |
| v3 = _mm256_sub_epi32(s1, s3); |
| |
| u0 = _mm256_add_epi32(u0, dct_rounding); |
| v0 = _mm256_add_epi32(v0, dct_rounding); |
| u1 = _mm256_add_epi32(u1, dct_rounding); |
| v1 = _mm256_add_epi32(v1, dct_rounding); |
| u2 = _mm256_add_epi32(u2, dct_rounding); |
| v2 = _mm256_add_epi32(v2, dct_rounding); |
| u3 = _mm256_add_epi32(u3, dct_rounding); |
| v3 = _mm256_add_epi32(v3, dct_rounding); |
| |
| u0 = _mm256_srai_epi32(u0, DCT_CONST_BITS); |
| v0 = _mm256_srai_epi32(v0, DCT_CONST_BITS); |
| u1 = _mm256_srai_epi32(u1, DCT_CONST_BITS); |
| v1 = _mm256_srai_epi32(v1, DCT_CONST_BITS); |
| u2 = _mm256_srai_epi32(u2, DCT_CONST_BITS); |
| v2 = _mm256_srai_epi32(v2, DCT_CONST_BITS); |
| u3 = _mm256_srai_epi32(u3, DCT_CONST_BITS); |
| v3 = _mm256_srai_epi32(v3, DCT_CONST_BITS); |
| |
| in[0] = _mm256_packs_epi32(u0, v0); |
| x1 = _mm256_packs_epi32(u1, v1); |
| x2 = _mm256_packs_epi32(u2, v2); |
| x3 = _mm256_packs_epi32(u3, v3); |
| |
| // Rounding on s4 + s6, s5 + s7, s4 - s6, s5 - s7 |
| u4 = _mm256_add_epi32(s4, s6); |
| u5 = _mm256_add_epi32(s5, s7); |
| u6 = _mm256_sub_epi32(s4, s6); |
| u7 = _mm256_sub_epi32(s5, s7); |
| |
| v4 = _mm256_add_epi32(x4, x6); |
| v5 = _mm256_add_epi32(x5, x7); |
| v6 = _mm256_sub_epi32(x4, x6); |
| v7 = _mm256_sub_epi32(x5, x7); |
| |
| u4 = _mm256_add_epi32(u4, dct_rounding); |
| u5 = _mm256_add_epi32(u5, dct_rounding); |
| u6 = _mm256_add_epi32(u6, dct_rounding); |
| u7 = _mm256_add_epi32(u7, dct_rounding); |
| |
| u4 = _mm256_srai_epi32(u4, DCT_CONST_BITS); |
| u5 = _mm256_srai_epi32(u5, DCT_CONST_BITS); |
| u6 = _mm256_srai_epi32(u6, DCT_CONST_BITS); |
| u7 = _mm256_srai_epi32(u7, DCT_CONST_BITS); |
| |
| v4 = _mm256_add_epi32(v4, dct_rounding); |
| v5 = _mm256_add_epi32(v5, dct_rounding); |
| v6 = _mm256_add_epi32(v6, dct_rounding); |
| v7 = _mm256_add_epi32(v7, dct_rounding); |
| |
| v4 = _mm256_srai_epi32(v4, DCT_CONST_BITS); |
| v5 = _mm256_srai_epi32(v5, DCT_CONST_BITS); |
| v6 = _mm256_srai_epi32(v6, DCT_CONST_BITS); |
| v7 = _mm256_srai_epi32(v7, DCT_CONST_BITS); |
| |
| x4 = _mm256_packs_epi32(u4, v4); |
| in[12] = _mm256_packs_epi32(u5, v5); |
| x6 = _mm256_packs_epi32(u6, v6); |
| x7 = _mm256_packs_epi32(u7, v7); |
| |
| u0 = _mm256_add_epi32(u8, u10); |
| v0 = _mm256_add_epi32(v8, v10); |
| u1 = _mm256_add_epi32(u9, u11); |
| v1 = _mm256_add_epi32(v9, v11); |
| u2 = _mm256_sub_epi32(u8, u10); |
| v2 = _mm256_sub_epi32(v8, v10); |
| u3 = _mm256_sub_epi32(u9, u11); |
| v3 = _mm256_sub_epi32(v9, v11); |
| |
| u0 = _mm256_add_epi32(u0, dct_rounding); |
| v0 = _mm256_add_epi32(v0, dct_rounding); |
| u1 = _mm256_add_epi32(u1, dct_rounding); |
| v1 = _mm256_add_epi32(v1, dct_rounding); |
| u2 = _mm256_add_epi32(u2, dct_rounding); |
| v2 = _mm256_add_epi32(v2, dct_rounding); |
| u3 = _mm256_add_epi32(u3, dct_rounding); |
| v3 = _mm256_add_epi32(v3, dct_rounding); |
| |
| u0 = _mm256_srai_epi32(u0, DCT_CONST_BITS); |
| v0 = _mm256_srai_epi32(v0, DCT_CONST_BITS); |
| u1 = _mm256_srai_epi32(u1, DCT_CONST_BITS); |
| v1 = _mm256_srai_epi32(v1, DCT_CONST_BITS); |
| u2 = _mm256_srai_epi32(u2, DCT_CONST_BITS); |
| v2 = _mm256_srai_epi32(v2, DCT_CONST_BITS); |
| u3 = _mm256_srai_epi32(u3, DCT_CONST_BITS); |
| v3 = _mm256_srai_epi32(v3, DCT_CONST_BITS); |
| |
| x8 = _mm256_packs_epi32(u0, v0); |
| in[14] = _mm256_packs_epi32(u1, v1); |
| x10 = _mm256_packs_epi32(u2, v2); |
| x11 = _mm256_packs_epi32(u3, v3); |
| |
| // Rounding on s12 + s14, s13 + s15, s12 - s14, s13 - s15 |
| u12 = _mm256_add_epi32(s12, s14); |
| u13 = _mm256_add_epi32(s13, s15); |
| u14 = _mm256_sub_epi32(s12, s14); |
| u15 = _mm256_sub_epi32(s13, s15); |
| |
| v12 = _mm256_add_epi32(x12, x14); |
| v13 = _mm256_add_epi32(x13, x15); |
| v14 = _mm256_sub_epi32(x12, x14); |
| v15 = _mm256_sub_epi32(x13, x15); |
| |
| u12 = _mm256_add_epi32(u12, dct_rounding); |
| u13 = _mm256_add_epi32(u13, dct_rounding); |
| u14 = _mm256_add_epi32(u14, dct_rounding); |
| u15 = _mm256_add_epi32(u15, dct_rounding); |
| |
| u12 = _mm256_srai_epi32(u12, DCT_CONST_BITS); |
| u13 = _mm256_srai_epi32(u13, DCT_CONST_BITS); |
| u14 = _mm256_srai_epi32(u14, DCT_CONST_BITS); |
| u15 = _mm256_srai_epi32(u15, DCT_CONST_BITS); |
| |
| v12 = _mm256_add_epi32(v12, dct_rounding); |
| v13 = _mm256_add_epi32(v13, dct_rounding); |
| v14 = _mm256_add_epi32(v14, dct_rounding); |
| v15 = _mm256_add_epi32(v15, dct_rounding); |
| |
| v12 = _mm256_srai_epi32(v12, DCT_CONST_BITS); |
| v13 = _mm256_srai_epi32(v13, DCT_CONST_BITS); |
| v14 = _mm256_srai_epi32(v14, DCT_CONST_BITS); |
| v15 = _mm256_srai_epi32(v15, DCT_CONST_BITS); |
| |
| x12 = _mm256_packs_epi32(u12, v12); |
| x13 = _mm256_packs_epi32(u13, v13); |
| x14 = _mm256_packs_epi32(u14, v14); |
| x15 = _mm256_packs_epi32(u15, v15); |
| in[2] = x12; |
| |
| // stage 4 |
| y0 = _mm256_unpacklo_epi16(x2, x3); |
| y1 = _mm256_unpackhi_epi16(x2, x3); |
| s2 = _mm256_madd_epi16(y0, cospi_m16_m16); |
| x2 = _mm256_madd_epi16(y1, cospi_m16_m16); |
| s3 = _mm256_madd_epi16(y0, cospi_p16_m16); |
| x3 = _mm256_madd_epi16(y1, cospi_p16_m16); |
| |
| y0 = _mm256_unpacklo_epi16(x6, x7); |
| y1 = _mm256_unpackhi_epi16(x6, x7); |
| s6 = _mm256_madd_epi16(y0, cospi_p16_p16); |
| x6 = _mm256_madd_epi16(y1, cospi_p16_p16); |
| s7 = _mm256_madd_epi16(y0, cospi_m16_p16); |
| x7 = _mm256_madd_epi16(y1, cospi_m16_p16); |
| |
| y0 = _mm256_unpacklo_epi16(x10, x11); |
| y1 = _mm256_unpackhi_epi16(x10, x11); |
| s10 = _mm256_madd_epi16(y0, cospi_p16_p16); |
| x10 = _mm256_madd_epi16(y1, cospi_p16_p16); |
| s11 = _mm256_madd_epi16(y0, cospi_m16_p16); |
| x11 = _mm256_madd_epi16(y1, cospi_m16_p16); |
| |
| y0 = _mm256_unpacklo_epi16(x14, x15); |
| y1 = _mm256_unpackhi_epi16(x14, x15); |
| s14 = _mm256_madd_epi16(y0, cospi_m16_m16); |
| x14 = _mm256_madd_epi16(y1, cospi_m16_m16); |
| s15 = _mm256_madd_epi16(y0, cospi_p16_m16); |
| x15 = _mm256_madd_epi16(y1, cospi_p16_m16); |
| |
| // Rounding |
| u2 = _mm256_add_epi32(s2, dct_rounding); |
| u3 = _mm256_add_epi32(s3, dct_rounding); |
| u6 = _mm256_add_epi32(s6, dct_rounding); |
| u7 = _mm256_add_epi32(s7, dct_rounding); |
| |
| u10 = _mm256_add_epi32(s10, dct_rounding); |
| u11 = _mm256_add_epi32(s11, dct_rounding); |
| u14 = _mm256_add_epi32(s14, dct_rounding); |
| u15 = _mm256_add_epi32(s15, dct_rounding); |
| |
| u2 = _mm256_srai_epi32(u2, DCT_CONST_BITS); |
| u3 = _mm256_srai_epi32(u3, DCT_CONST_BITS); |
| u6 = _mm256_srai_epi32(u6, DCT_CONST_BITS); |
| u7 = _mm256_srai_epi32(u7, DCT_CONST_BITS); |
| |
| u10 = _mm256_srai_epi32(u10, DCT_CONST_BITS); |
| u11 = _mm256_srai_epi32(u11, DCT_CONST_BITS); |
| u14 = _mm256_srai_epi32(u14, DCT_CONST_BITS); |
| u15 = _mm256_srai_epi32(u15, DCT_CONST_BITS); |
| |
| v2 = _mm256_add_epi32(x2, dct_rounding); |
| v3 = _mm256_add_epi32(x3, dct_rounding); |
| v6 = _mm256_add_epi32(x6, dct_rounding); |
| v7 = _mm256_add_epi32(x7, dct_rounding); |
| |
| v10 = _mm256_add_epi32(x10, dct_rounding); |
| v11 = _mm256_add_epi32(x11, dct_rounding); |
| v14 = _mm256_add_epi32(x14, dct_rounding); |
| v15 = _mm256_add_epi32(x15, dct_rounding); |
| |
| v2 = _mm256_srai_epi32(v2, DCT_CONST_BITS); |
| v3 = _mm256_srai_epi32(v3, DCT_CONST_BITS); |
| v6 = _mm256_srai_epi32(v6, DCT_CONST_BITS); |
| v7 = _mm256_srai_epi32(v7, DCT_CONST_BITS); |
| |
| v10 = _mm256_srai_epi32(v10, DCT_CONST_BITS); |
| v11 = _mm256_srai_epi32(v11, DCT_CONST_BITS); |
| v14 = _mm256_srai_epi32(v14, DCT_CONST_BITS); |
| v15 = _mm256_srai_epi32(v15, DCT_CONST_BITS); |
| |
| in[7] = _mm256_packs_epi32(u2, v2); |
| in[8] = _mm256_packs_epi32(u3, v3); |
| |
| in[4] = _mm256_packs_epi32(u6, v6); |
| in[11] = _mm256_packs_epi32(u7, v7); |
| |
| in[6] = _mm256_packs_epi32(u10, v10); |
| in[9] = _mm256_packs_epi32(u11, v11); |
| |
| in[5] = _mm256_packs_epi32(u14, v14); |
| in[10] = _mm256_packs_epi32(u15, v15); |
| |
| in[1] = _mm256_sub_epi16(zero, x8); |
| in[3] = _mm256_sub_epi16(zero, x4); |
| in[13] = _mm256_sub_epi16(zero, x13); |
| in[15] = _mm256_sub_epi16(zero, x1); |
| } |
| |
| static void fidtx16_avx2(__m256i *in) { |
| txfm_scaling16_avx2((int16_t)Sqrt2, in); |
| } |
| |
| void av1_fht16x16_avx2(const int16_t *input, tran_low_t *output, int stride, |
| TxfmParam *txfm_param) { |
| __m256i in[16]; |
| const TX_TYPE tx_type = txfm_param->tx_type; |
| |
| switch (tx_type) { |
| case DCT_DCT: |
| load_buffer_16x16(input, stride, 0, 0, in); |
| fdct16_avx2(in); |
| mm256_transpose_16x16(in, in); |
| right_shift_16x16(in); |
| fdct16_avx2(in); |
| break; |
| case ADST_DCT: |
| load_buffer_16x16(input, stride, 0, 0, in); |
| fadst16_avx2(in); |
| mm256_transpose_16x16(in, in); |
| right_shift_16x16(in); |
| fdct16_avx2(in); |
| break; |
| case DCT_ADST: |
| load_buffer_16x16(input, stride, 0, 0, in); |
| fdct16_avx2(in); |
| mm256_transpose_16x16(in, in); |
| right_shift_16x16(in); |
| fadst16_avx2(in); |
| break; |
| case ADST_ADST: |
| load_buffer_16x16(input, stride, 0, 0, in); |
| fadst16_avx2(in); |
| mm256_transpose_16x16(in, in); |
| right_shift_16x16(in); |
| fadst16_avx2(in); |
| break; |
| case FLIPADST_DCT: |
| load_buffer_16x16(input, stride, 1, 0, in); |
| fadst16_avx2(in); |
| mm256_transpose_16x16(in, in); |
| right_shift_16x16(in); |
| fdct16_avx2(in); |
| break; |
| case DCT_FLIPADST: |
| load_buffer_16x16(input, stride, 0, 1, in); |
| fdct16_avx2(in); |
| mm256_transpose_16x16(in, in); |
| right_shift_16x16(in); |
| fadst16_avx2(in); |
| break; |
| case FLIPADST_FLIPADST: |
| load_buffer_16x16(input, stride, 1, 1, in); |
| fadst16_avx2(in); |
| mm256_transpose_16x16(in, in); |
| right_shift_16x16(in); |
| fadst16_avx2(in); |
| break; |
| case ADST_FLIPADST: |
| load_buffer_16x16(input, stride, 0, 1, in); |
| fadst16_avx2(in); |
| mm256_transpose_16x16(in, in); |
| right_shift_16x16(in); |
| fadst16_avx2(in); |
| break; |
| case FLIPADST_ADST: |
| load_buffer_16x16(input, stride, 1, 0, in); |
| fadst16_avx2(in); |
| mm256_transpose_16x16(in, in); |
| right_shift_16x16(in); |
| fadst16_avx2(in); |
| break; |
| case IDTX: |
| load_buffer_16x16(input, stride, 0, 0, in); |
| fidtx16_avx2(in); |
| mm256_transpose_16x16(in, in); |
| right_shift_16x16(in); |
| fidtx16_avx2(in); |
| break; |
| case V_DCT: |
| load_buffer_16x16(input, stride, 0, 0, in); |
| fdct16_avx2(in); |
| mm256_transpose_16x16(in, in); |
| right_shift_16x16(in); |
| fidtx16_avx2(in); |
| break; |
| case H_DCT: |
| load_buffer_16x16(input, stride, 0, 0, in); |
| fidtx16_avx2(in); |
| mm256_transpose_16x16(in, in); |
| right_shift_16x16(in); |
| fdct16_avx2(in); |
| break; |
| case V_ADST: |
| load_buffer_16x16(input, stride, 0, 0, in); |
| fadst16_avx2(in); |
| mm256_transpose_16x16(in, in); |
| right_shift_16x16(in); |
| fidtx16_avx2(in); |
| break; |
| case H_ADST: |
| load_buffer_16x16(input, stride, 0, 0, in); |
| fidtx16_avx2(in); |
| mm256_transpose_16x16(in, in); |
| right_shift_16x16(in); |
| fadst16_avx2(in); |
| break; |
| case V_FLIPADST: |
| load_buffer_16x16(input, stride, 1, 0, in); |
| fadst16_avx2(in); |
| mm256_transpose_16x16(in, in); |
| right_shift_16x16(in); |
| fidtx16_avx2(in); |
| break; |
| case H_FLIPADST: |
| load_buffer_16x16(input, stride, 0, 1, in); |
| fidtx16_avx2(in); |
| mm256_transpose_16x16(in, in); |
| right_shift_16x16(in); |
| fadst16_avx2(in); |
| break; |
| default: assert(0); break; |
| } |
| mm256_transpose_16x16(in, in); |
| write_buffer_16x16(in, output); |
| _mm256_zeroupper(); |
| } |
| |
| static void mm256_vectors_swap(__m256i *a0, __m256i *a1, const int size) { |
| int i = 0; |
| __m256i temp; |
| while (i < size) { |
| temp = a0[i]; |
| a0[i] = a1[i]; |
| a1[i] = temp; |
| i++; |
| } |
| } |
| |
| static void mm256_transpose_32x32(__m256i *in0, __m256i *in1) { |
| mm256_transpose_16x16(in0, in0); |
| mm256_transpose_16x16(&in0[16], &in0[16]); |
| mm256_transpose_16x16(in1, in1); |
| mm256_transpose_16x16(&in1[16], &in1[16]); |
| mm256_vectors_swap(&in0[16], in1, 16); |
| } |
| |
| static void prepare_16x16_even(const __m256i *in, __m256i *even) { |
| even[0] = _mm256_add_epi16(in[0], in[31]); |
| even[1] = _mm256_add_epi16(in[1], in[30]); |
| even[2] = _mm256_add_epi16(in[2], in[29]); |
| even[3] = _mm256_add_epi16(in[3], in[28]); |
| even[4] = _mm256_add_epi16(in[4], in[27]); |
| even[5] = _mm256_add_epi16(in[5], in[26]); |
| even[6] = _mm256_add_epi16(in[6], in[25]); |
| even[7] = _mm256_add_epi16(in[7], in[24]); |
| even[8] = _mm256_add_epi16(in[8], in[23]); |
| even[9] = _mm256_add_epi16(in[9], in[22]); |
| even[10] = _mm256_add_epi16(in[10], in[21]); |
| even[11] = _mm256_add_epi16(in[11], in[20]); |
| even[12] = _mm256_add_epi16(in[12], in[19]); |
| even[13] = _mm256_add_epi16(in[13], in[18]); |
| even[14] = _mm256_add_epi16(in[14], in[17]); |
| even[15] = _mm256_add_epi16(in[15], in[16]); |
| } |
| |
| static void prepare_16x16_odd(const __m256i *in, __m256i *odd) { |
| odd[0] = _mm256_sub_epi16(in[15], in[16]); |
| odd[1] = _mm256_sub_epi16(in[14], in[17]); |
| odd[2] = _mm256_sub_epi16(in[13], in[18]); |
| odd[3] = _mm256_sub_epi16(in[12], in[19]); |
| odd[4] = _mm256_sub_epi16(in[11], in[20]); |
| odd[5] = _mm256_sub_epi16(in[10], in[21]); |
| odd[6] = _mm256_sub_epi16(in[9], in[22]); |
| odd[7] = _mm256_sub_epi16(in[8], in[23]); |
| odd[8] = _mm256_sub_epi16(in[7], in[24]); |
| odd[9] = _mm256_sub_epi16(in[6], in[25]); |
| odd[10] = _mm256_sub_epi16(in[5], in[26]); |
| odd[11] = _mm256_sub_epi16(in[4], in[27]); |
| odd[12] = _mm256_sub_epi16(in[3], in[28]); |
| odd[13] = _mm256_sub_epi16(in[2], in[29]); |
| odd[14] = _mm256_sub_epi16(in[1], in[30]); |
| odd[15] = _mm256_sub_epi16(in[0], in[31]); |
| } |
| |
| static void collect_16col(const __m256i *even, const __m256i *odd, |
| __m256i *out) { |
| // fdct16_avx2() already maps the output |
| out[0] = even[0]; |
| out[2] = even[1]; |
| out[4] = even[2]; |
| out[6] = even[3]; |
| out[8] = even[4]; |
| out[10] = even[5]; |
| out[12] = even[6]; |
| out[14] = even[7]; |
| out[16] = even[8]; |
| out[18] = even[9]; |
| out[20] = even[10]; |
| out[22] = even[11]; |
| out[24] = even[12]; |
| out[26] = even[13]; |
| out[28] = even[14]; |
| out[30] = even[15]; |
| |
| out[1] = odd[0]; |
| out[17] = odd[1]; |
| out[9] = odd[2]; |
| out[25] = odd[3]; |
| out[5] = odd[4]; |
| out[21] = odd[5]; |
| out[13] = odd[6]; |
| out[29] = odd[7]; |
| out[3] = odd[8]; |
| out[19] = odd[9]; |
| out[11] = odd[10]; |
| out[27] = odd[11]; |
| out[7] = odd[12]; |
| out[23] = odd[13]; |
| out[15] = odd[14]; |
| out[31] = odd[15]; |
| } |
| |
| static void collect_coeffs(const __m256i *first_16col_even, |
| const __m256i *first_16col_odd, |
| const __m256i *second_16col_even, |
| const __m256i *second_16col_odd, __m256i *in0, |
| __m256i *in1) { |
| collect_16col(first_16col_even, first_16col_odd, in0); |
| collect_16col(second_16col_even, second_16col_odd, in1); |
| } |
| |
| static void fdct16_odd_avx2(__m256i *in) { |
| // sequence: cospi_L_H = pairs(L, H) and L first |
| const __m256i cospi_p16_p16 = pair256_set_epi16(cospi_16_64, cospi_16_64); |
| const __m256i cospi_m16_p16 = pair256_set_epi16(-cospi_16_64, cospi_16_64); |
| const __m256i cospi_m08_p24 = pair256_set_epi16(-cospi_8_64, cospi_24_64); |
| const __m256i cospi_p24_p08 = pair256_set_epi16(cospi_24_64, cospi_8_64); |
| const __m256i cospi_m24_m08 = pair256_set_epi16(-cospi_24_64, -cospi_8_64); |
| const __m256i cospi_m04_p28 = pair256_set_epi16(-cospi_4_64, cospi_28_64); |
| const __m256i cospi_p28_p04 = pair256_set_epi16(cospi_28_64, cospi_4_64); |
| const __m256i cospi_m28_m04 = pair256_set_epi16(-cospi_28_64, -cospi_4_64); |
| const __m256i cospi_m20_p12 = pair256_set_epi16(-cospi_20_64, cospi_12_64); |
| const __m256i cospi_p12_p20 = pair256_set_epi16(cospi_12_64, cospi_20_64); |
| const __m256i cospi_m12_m20 = pair256_set_epi16(-cospi_12_64, -cospi_20_64); |
| |
| const __m256i cospi_p31_p01 = pair256_set_epi16(cospi_31_64, cospi_1_64); |
| const __m256i cospi_m01_p31 = pair256_set_epi16(-cospi_1_64, cospi_31_64); |
| const __m256i cospi_p15_p17 = pair256_set_epi16(cospi_15_64, cospi_17_64); |
| const __m256i cospi_m17_p15 = pair256_set_epi16(-cospi_17_64, cospi_15_64); |
| const __m256i cospi_p23_p09 = pair256_set_epi16(cospi_23_64, cospi_9_64); |
| const __m256i cospi_m09_p23 = pair256_set_epi16(-cospi_9_64, cospi_23_64); |
| const __m256i cospi_p07_p25 = pair256_set_epi16(cospi_7_64, cospi_25_64); |
| const __m256i cospi_m25_p07 = pair256_set_epi16(-cospi_25_64, cospi_7_64); |
| const __m256i cospi_p27_p05 = pair256_set_epi16(cospi_27_64, cospi_5_64); |
| const __m256i cospi_m05_p27 = pair256_set_epi16(-cospi_5_64, cospi_27_64); |
| const __m256i cospi_p11_p21 = pair256_set_epi16(cospi_11_64, cospi_21_64); |
| const __m256i cospi_m21_p11 = pair256_set_epi16(-cospi_21_64, cospi_11_64); |
| const __m256i cospi_p19_p13 = pair256_set_epi16(cospi_19_64, cospi_13_64); |
| const __m256i cospi_m13_p19 = pair256_set_epi16(-cospi_13_64, cospi_19_64); |
| const __m256i cospi_p03_p29 = pair256_set_epi16(cospi_3_64, cospi_29_64); |
| const __m256i cospi_m29_p03 = pair256_set_epi16(-cospi_29_64, cospi_3_64); |
| |
| __m256i x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15; |
| __m256i y0, y1, y2, y3, y4, y5, y6, y7, y8, y9, y10, y11, y12, y13, y14, y15; |
| __m256i u0, u1; |
| |
| // stage 1 is in prepare_16x16_odd() |
| |
| // stage 2 |
| y0 = in[0]; |
| y1 = in[1]; |
| y2 = in[2]; |
| y3 = in[3]; |
| |
| u0 = _mm256_unpacklo_epi16(in[4], in[11]); |
| u1 = _mm256_unpackhi_epi16(in[4], in[11]); |
| y4 = butter_fly(&u0, &u1, &cospi_m16_p16); |
| y11 = butter_fly(&u0, &u1, &cospi_p16_p16); |
| |
| u0 = _mm256_unpacklo_epi16(in[5], in[10]); |
| u1 = _mm256_unpackhi_epi16(in[5], in[10]); |
| y5 = butter_fly(&u0, &u1, &cospi_m16_p16); |
| y10 = butter_fly(&u0, &u1, &cospi_p16_p16); |
| |
| u0 = _mm256_unpacklo_epi16(in[6], in[9]); |
| u1 = _mm256_unpackhi_epi16(in[6], in[9]); |
| y6 = butter_fly(&u0, &u1, &cospi_m16_p16); |
| y9 = butter_fly(&u0, &u1, &cospi_p16_p16); |
| |
| u0 = _mm256_unpacklo_epi16(in[7], in[8]); |
| u1 = _mm256_unpackhi_epi16(in[7], in[8]); |
| y7 = butter_fly(&u0, &u1, &cospi_m16_p16); |
| y8 = butter_fly(&u0, &u1, &cospi_p16_p16); |
| |
| y12 = in[12]; |
| y13 = in[13]; |
| y14 = in[14]; |
| y15 = in[15]; |
| |
| // stage 3 |
| x0 = _mm256_add_epi16(y0, y7); |
| x1 = _mm256_add_epi16(y1, y6); |
| x2 = _mm256_add_epi16(y2, y5); |
| x3 = _mm256_add_epi16(y3, y4); |
| x4 = _mm256_sub_epi16(y3, y4); |
| x5 = _mm256_sub_epi16(y2, y5); |
| x6 = _mm256_sub_epi16(y1, y6); |
| x7 = _mm256_sub_epi16(y0, y7); |
| x8 = _mm256_sub_epi16(y15, y8); |
| x9 = _mm256_sub_epi16(y14, y9); |
| x10 = _mm256_sub_epi16(y13, y10); |
| x11 = _mm256_sub_epi16(y12, y11); |
| x12 = _mm256_add_epi16(y12, y11); |
| x13 = _mm256_add_epi16(y13, y10); |
| x14 = _mm256_add_epi16(y14, y9); |
| x15 = _mm256_add_epi16(y15, y8); |
| |
| // stage 4 |
| y0 = x0; |
| y1 = x1; |
| y6 = x6; |
| y7 = x7; |
| y8 = x8; |
| y9 = x9; |
| y14 = x14; |
| y15 = x15; |
| |
| u0 = _mm256_unpacklo_epi16(x2, x13); |
| u1 = _mm256_unpackhi_epi16(x2, x13); |
| y2 = butter_fly(&u0, &u1, &cospi_m08_p24); |
| y13 = butter_fly(&u0, &u1, &cospi_p24_p08); |
| |
| u0 = _mm256_unpacklo_epi16(x3, x12); |
| u1 = _mm256_unpackhi_epi16(x3, x12); |
| y3 = butter_fly(&u0, &u1, &cospi_m08_p24); |
| y12 = butter_fly(&u0, &u1, &cospi_p24_p08); |
| |
| u0 = _mm256_unpacklo_epi16(x4, x11); |
| u1 = _mm256_unpackhi_epi16(x4, x11); |
| y4 = butter_fly(&u0, &u1, &cospi_m24_m08); |
| y11 = butter_fly(&u0, &u1, &cospi_m08_p24); |
| |
| u0 = _mm256_unpacklo_epi16(x5, x10); |
| u1 = _mm256_unpackhi_epi16(x5, x10); |
| y5 = butter_fly(&u0, &u1, &cospi_m24_m08); |
| y10 = butter_fly(&u0, &u1, &cospi_m08_p24); |
| |
| // stage 5 |
| x0 = _mm256_add_epi16(y0, y3); |
| x1 = _mm256_add_epi16(y1, y2); |
| x2 = _mm256_sub_epi16(y1, y2); |
| x3 = _mm256_sub_epi16(y0, y3); |
| x4 = _mm256_sub_epi16(y7, y4); |
| x5 = _mm256_sub_epi16(y6, y5); |
| x6 = _mm256_add_epi16(y6, y5); |
| x7 = _mm256_add_epi16(y7, y4); |
| |
| x8 = _mm256_add_epi16(y8, y11); |
| x9 = _mm256_add_epi16(y9, y10); |
| x10 = _mm256_sub_epi16(y9, y10); |
| x11 = _mm256_sub_epi16(y8, y11); |
| x12 = _mm256_sub_epi16(y15, y12); |
| x13 = _mm256_sub_epi16(y14, y13); |
| x14 = _mm256_add_epi16(y14, y13); |
| x15 = _mm256_add_epi16(y15, y12); |
| |
| // stage 6 |
| y0 = x0; |
| y3 = x3; |
| y4 = x4; |
| y7 = x7; |
| y8 = x8; |
| y11 = x11; |
| y12 = x12; |
| y15 = x15; |
| |
| u0 = _mm256_unpacklo_epi16(x1, x14); |
| u1 = _mm256_unpackhi_epi16(x1, x14); |
| y1 = butter_fly(&u0, &u1, &cospi_m04_p28); |
| y14 = butter_fly(&u0, &u1, &cospi_p28_p04); |
| |
| u0 = _mm256_unpacklo_epi16(x2, x13); |
| u1 = _mm256_unpackhi_epi16(x2, x13); |
| y2 = butter_fly(&u0, &u1, &cospi_m28_m04); |
| y13 = butter_fly(&u0, &u1, &cospi_m04_p28); |
| |
| u0 = _mm256_unpacklo_epi16(x5, x10); |
| u1 = _mm256_unpackhi_epi16(x5, x10); |
| y5 = butter_fly(&u0, &u1, &cospi_m20_p12); |
| y10 = butter_fly(&u0, &u1, &cospi_p12_p20); |
| |
| u0 = _mm256_unpacklo_epi16(x6, x9); |
| u1 = _mm256_unpackhi_epi16(x6, x9); |
| y6 = butter_fly(&u0, &u1, &cospi_m12_m20); |
| y9 = butter_fly(&u0, &u1, &cospi_m20_p12); |
| |
| // stage 7 |
| x0 = _mm256_add_epi16(y0, y1); |
| x1 = _mm256_sub_epi16(y0, y1); |
| x2 = _mm256_sub_epi16(y3, y2); |
| x3 = _mm256_add_epi16(y3, y2); |
| x4 = _mm256_add_epi16(y4, y5); |
| x5 = _mm256_sub_epi16(y4, y5); |
| x6 = _mm256_sub_epi16(y7, y6); |
| x7 = _mm256_add_epi16(y7, y6); |
| |
| x8 = _mm256_add_epi16(y8, y9); |
| x9 = _mm256_sub_epi16(y8, y9); |
| x10 = _mm256_sub_epi16(y11, y10); |
| x11 = _mm256_add_epi16(y11, y10); |
| x12 = _mm256_add_epi16(y12, y13); |
| x13 = _mm256_sub_epi16(y12, y13); |
| x14 = _mm256_sub_epi16(y15, y14); |
| x15 = _mm256_add_epi16(y15, y14); |
| |
| // stage 8 |
| u0 = _mm256_unpacklo_epi16(x0, x15); |
| u1 = _mm256_unpackhi_epi16(x0, x15); |
| in[0] = butter_fly(&u0, &u1, &cospi_p31_p01); |
| in[15] = butter_fly(&u0, &u1, &cospi_m01_p31); |
| |
| u0 = _mm256_unpacklo_epi16(x1, x14); |
| u1 = _mm256_unpackhi_epi16(x1, x14); |
| in[1] = butter_fly(&u0, &u1, &cospi_p15_p17); |
| in[14] = butter_fly(&u0, &u1, &cospi_m17_p15); |
| |
| u0 = _mm256_unpacklo_epi16(x2, x13); |
| u1 = _mm256_unpackhi_epi16(x2, x13); |
| in[2] = butter_fly(&u0, &u1, &cospi_p23_p09); |
| in[13] = butter_fly(&u0, &u1, &cospi_m09_p23); |
| |
| u0 = _mm256_unpacklo_epi16(x3, x12); |
| u1 = _mm256_unpackhi_epi16(x3, x12); |
| in[3] = butter_fly(&u0, &u1, &cospi_p07_p25); |
| in[12] = butter_fly(&u0, &u1, &cospi_m25_p07); |
| |
| u0 = _mm256_unpacklo_epi16(x4, x11); |
| u1 = _mm256_unpackhi_epi16(x4, x11); |
| in[4] = butter_fly(&u0, &u1, &cospi_p27_p05); |
| in[11] = butter_fly(&u0, &u1, &cospi_m05_p27); |
| |
| u0 = _mm256_unpacklo_epi16(x5, x10); |
| u1 = _mm256_unpackhi_epi16(x5, x10); |
| in[5] = butter_fly(&u0, &u1, &cospi_p11_p21); |
| in[10] = butter_fly(&u0, &u1, &cospi_m21_p11); |
| |
| u0 = _mm256_unpacklo_epi16(x6, x9); |
| u1 = _mm256_unpackhi_epi16(x6, x9); |
| in[6] = butter_fly(&u0, &u1, &cospi_p19_p13); |
| in[9] = butter_fly(&u0, &u1, &cospi_m13_p19); |
| |
| u0 = _mm256_unpacklo_epi16(x7, x8); |
| u1 = _mm256_unpackhi_epi16(x7, x8); |
| in[7] = butter_fly(&u0, &u1, &cospi_p03_p29); |
| in[8] = butter_fly(&u0, &u1, &cospi_m29_p03); |
| } |
| |
| static void fdct32_avx2(__m256i *in0, __m256i *in1) { |
| __m256i even0[16], even1[16], odd0[16], odd1[16]; |
| prepare_16x16_even(in0, even0); |
| fdct16_avx2(even0); |
| |
| prepare_16x16_odd(in0, odd0); |
| fdct16_odd_avx2(odd0); |
| |
| prepare_16x16_even(in1, even1); |
| fdct16_avx2(even1); |
| |
| prepare_16x16_odd(in1, odd1); |
| fdct16_odd_avx2(odd1); |
| |
| collect_coeffs(even0, odd0, even1, odd1, in0, in1); |
| |
| mm256_transpose_32x32(in0, in1); |
| } |
| |
| static INLINE void write_buffer_32x32(const __m256i *in0, const __m256i *in1, |
| tran_low_t *output) { |
| int i = 0; |
| const int stride = 32; |
| tran_low_t *coeff = output; |
| while (i < 32) { |
| storeu_output_avx2(&in0[i], coeff); |
| storeu_output_avx2(&in1[i], coeff + 16); |
| coeff += stride; |
| i += 1; |
| } |
| } |
| |
| static void fhalfright32_16col_avx2(__m256i *in) { |
| int i = 0; |
| const __m256i zero = _mm256_setzero_si256(); |
| const __m256i sqrt2 = _mm256_set1_epi16((int16_t)Sqrt2); |
| const __m256i dct_rounding = _mm256_set1_epi32(DCT_CONST_ROUNDING); |
| __m256i x0, x1; |
| |
| while (i < 16) { |
| in[i] = _mm256_slli_epi16(in[i], 2); |
| x0 = _mm256_unpacklo_epi16(in[i + 16], zero); |
| x1 = _mm256_unpackhi_epi16(in[i + 16], zero); |
| x0 = _mm256_madd_epi16(x0, sqrt2); |
| x1 = _mm256_madd_epi16(x1, sqrt2); |
| x0 = _mm256_add_epi32(x0, dct_rounding); |
| x1 = _mm256_add_epi32(x1, dct_rounding); |
| x0 = _mm256_srai_epi32(x0, DCT_CONST_BITS); |
| x1 = _mm256_srai_epi32(x1, DCT_CONST_BITS); |
| in[i + 16] = _mm256_packs_epi32(x0, x1); |
| i += 1; |
| } |
| fdct16_avx2(&in[16]); |
| } |
| |
| static void fhalfright32_avx2(__m256i *in0, __m256i *in1) { |
| fhalfright32_16col_avx2(in0); |
| fhalfright32_16col_avx2(in1); |
| mm256_vectors_swap(in0, &in0[16], 16); |
| mm256_vectors_swap(in1, &in1[16], 16); |
| mm256_transpose_32x32(in0, in1); |
| } |
| |
| static INLINE void load_buffer_32x32(const int16_t *input, int stride, |
| int flipud, int fliplr, __m256i *in0, |
| __m256i *in1) { |
| // Load 4 16x16 blocks |
| const int16_t *topL = input; |
| const int16_t *topR = input + 16; |
| const int16_t *botL = input + 16 * stride; |
| const int16_t *botR = input + 16 * stride + 16; |
| |
| const int16_t *tmp; |
| |
| if (flipud) { |
| // Swap left columns |
| tmp = topL; |
| topL = botL; |
| botL = tmp; |
| // Swap right columns |
| tmp = topR; |
| topR = botR; |
| botR = tmp; |
| } |
| |
| if (fliplr) { |
| // Swap top rows |
| tmp = topL; |
| topL = topR; |
| topR = tmp; |
| // Swap bottom rows |
| tmp = botL; |
| botL = botR; |
| botR = tmp; |
| } |
| |
| // load first 16 columns |
| load_buffer_16x16(topL, stride, flipud, fliplr, in0); |
| load_buffer_16x16(botL, stride, flipud, fliplr, in0 + 16); |
| |
| // load second 16 columns |
| load_buffer_16x16(topR, stride, flipud, fliplr, in1); |
| load_buffer_16x16(botR, stride, flipud, fliplr, in1 + 16); |
| } |
| |
| static INLINE void right_shift_32x32_16col(int bit, __m256i *in) { |
| int i = 0; |
| const __m256i rounding = _mm256_set1_epi16((1 << bit) >> 1); |
| __m256i sign; |
| while (i < 32) { |
| sign = _mm256_srai_epi16(in[i], 15); |
| in[i] = _mm256_add_epi16(in[i], rounding); |
| in[i] = _mm256_add_epi16(in[i], sign); |
| in[i] = _mm256_srai_epi16(in[i], bit); |
| i += 1; |
| } |
| } |
| |
| // Positive rounding |
| static INLINE void right_shift_32x32(__m256i *in0, __m256i *in1) { |
| const int bit = 4; |
| right_shift_32x32_16col(bit, in0); |
| right_shift_32x32_16col(bit, in1); |
| } |
| |
| static void fidtx32_avx2(__m256i *in0, __m256i *in1) { |
| int i = 0; |
| while (i < 32) { |
| in0[i] = _mm256_slli_epi16(in0[i], 2); |
| in1[i] = _mm256_slli_epi16(in1[i], 2); |
| i += 1; |
| } |
| mm256_transpose_32x32(in0, in1); |
| } |
| |
| void av1_fht32x32_avx2(const int16_t *input, tran_low_t *output, int stride, |
| TxfmParam *txfm_param) { |
| __m256i in0[32]; // left 32 columns |
| __m256i in1[32]; // right 32 columns |
| const TX_TYPE tx_type = txfm_param->tx_type; |
| |
| switch (tx_type) { |
| case DCT_DCT: |
| load_buffer_32x32(input, stride, 0, 0, in0, in1); |
| fdct32_avx2(in0, in1); |
| right_shift_32x32(in0, in1); |
| fdct32_avx2(in0, in1); |
| break; |
| case ADST_DCT: |
| load_buffer_32x32(input, stride, 0, 0, in0, in1); |
| fhalfright32_avx2(in0, in1); |
| right_shift_32x32(in0, in1); |
| fdct32_avx2(in0, in1); |
| break; |
| case DCT_ADST: |
| load_buffer_32x32(input, stride, 0, 0, in0, in1); |
| fdct32_avx2(in0, in1); |
| right_shift_32x32(in0, in1); |
| fhalfright32_avx2(in0, in1); |
| break; |
| case ADST_ADST: |
| load_buffer_32x32(input, stride, 0, 0, in0, in1); |
| fhalfright32_avx2(in0, in1); |
| right_shift_32x32(in0, in1); |
| fhalfright32_avx2(in0, in1); |
| break; |
| case FLIPADST_DCT: |
| load_buffer_32x32(input, stride, 1, 0, in0, in1); |
| fhalfright32_avx2(in0, in1); |
| right_shift_32x32(in0, in1); |
| fdct32_avx2(in0, in1); |
| break; |
| case DCT_FLIPADST: |
| load_buffer_32x32(input, stride, 0, 1, in0, in1); |
| fdct32_avx2(in0, in1); |
| right_shift_32x32(in0, in1); |
| fhalfright32_avx2(in0, in1); |
| break; |
| case FLIPADST_FLIPADST: |
| load_buffer_32x32(input, stride, 1, 1, in0, in1); |
| fhalfright32_avx2(in0, in1); |
| right_shift_32x32(in0, in1); |
| fhalfright32_avx2(in0, in1); |
| break; |
| case ADST_FLIPADST: |
| load_buffer_32x32(input, stride, 0, 1, in0, in1); |
| fhalfright32_avx2(in0, in1); |
| right_shift_32x32(in0, in1); |
| fhalfright32_avx2(in0, in1); |
| break; |
| case FLIPADST_ADST: |
| load_buffer_32x32(input, stride, 1, 0, in0, in1); |
| fhalfright32_avx2(in0, in1); |
| right_shift_32x32(in0, in1); |
| fhalfright32_avx2(in0, in1); |
| break; |
| case IDTX: |
| load_buffer_32x32(input, stride, 0, 0, in0, in1); |
| fidtx32_avx2(in0, in1); |
| right_shift_32x32(in0, in1); |
| fidtx32_avx2(in0, in1); |
| break; |
| case V_DCT: |
| load_buffer_32x32(input, stride, 0, 0, in0, in1); |
| fdct32_avx2(in0, in1); |
| right_shift_32x32(in0, in1); |
| fidtx32_avx2(in0, in1); |
| break; |
| case H_DCT: |
| load_buffer_32x32(input, stride, 0, 0, in0, in1); |
| fidtx32_avx2(in0, in1); |
| right_shift_32x32(in0, in1); |
| fdct32_avx2(in0, in1); |
| break; |
| case V_ADST: |
| load_buffer_32x32(input, stride, 0, 0, in0, in1); |
| fhalfright32_avx2(in0, in1); |
| right_shift_32x32(in0, in1); |
| fidtx32_avx2(in0, in1); |
| break; |
| case H_ADST: |
| load_buffer_32x32(input, stride, 0, 0, in0, in1); |
| fidtx32_avx2(in0, in1); |
| right_shift_32x32(in0, in1); |
| fhalfright32_avx2(in0, in1); |
| break; |
| case V_FLIPADST: |
| load_buffer_32x32(input, stride, 1, 0, in0, in1); |
| fhalfright32_avx2(in0, in1); |
| right_shift_32x32(in0, in1); |
| fidtx32_avx2(in0, in1); |
| break; |
| case H_FLIPADST: |
| load_buffer_32x32(input, stride, 0, 1, in0, in1); |
| fidtx32_avx2(in0, in1); |
| right_shift_32x32(in0, in1); |
| fhalfright32_avx2(in0, in1); |
| break; |
| default: assert(0); break; |
| } |
| write_buffer_32x32(in0, in1, output); |
| _mm256_zeroupper(); |
| } |
