зеркало из https://github.com/mozilla/gecko-dev.git
205 строки
8.8 KiB
C
205 строки
8.8 KiB
C
/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#ifndef AOM_DSP_X86_TXFM_COMMON_AVX2_H
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#define AOM_DSP_X86_TXFM_COMMON_AVX2_H
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#include <immintrin.h>
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#include "aom_dsp/txfm_common.h"
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#define pair256_set_epi16(a, b) \
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_mm256_set_epi16((int16_t)(b), (int16_t)(a), (int16_t)(b), (int16_t)(a), \
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(int16_t)(b), (int16_t)(a), (int16_t)(b), (int16_t)(a), \
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(int16_t)(b), (int16_t)(a), (int16_t)(b), (int16_t)(a), \
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(int16_t)(b), (int16_t)(a), (int16_t)(b), (int16_t)(a))
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#define pair256_set_epi32(a, b) \
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_mm256_set_epi32((int)(b), (int)(a), (int)(b), (int)(a), (int)(b), (int)(a), \
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(int)(b), (int)(a))
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static INLINE void mm256_reverse_epi16(__m256i *u) {
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const __m256i control = _mm256_set_epi16(
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0x0100, 0x0302, 0x0504, 0x0706, 0x0908, 0x0B0A, 0x0D0C, 0x0F0E, 0x0100,
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0x0302, 0x0504, 0x0706, 0x0908, 0x0B0A, 0x0D0C, 0x0F0E);
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__m256i v = _mm256_shuffle_epi8(*u, control);
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*u = _mm256_permute2x128_si256(v, v, 1);
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}
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static INLINE void mm256_transpose_16x16(__m256i *in) {
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__m256i tr0_0 = _mm256_unpacklo_epi16(in[0], in[1]);
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__m256i tr0_1 = _mm256_unpackhi_epi16(in[0], in[1]);
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__m256i tr0_2 = _mm256_unpacklo_epi16(in[2], in[3]);
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__m256i tr0_3 = _mm256_unpackhi_epi16(in[2], in[3]);
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__m256i tr0_4 = _mm256_unpacklo_epi16(in[4], in[5]);
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__m256i tr0_5 = _mm256_unpackhi_epi16(in[4], in[5]);
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__m256i tr0_6 = _mm256_unpacklo_epi16(in[6], in[7]);
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__m256i tr0_7 = _mm256_unpackhi_epi16(in[6], in[7]);
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__m256i tr0_8 = _mm256_unpacklo_epi16(in[8], in[9]);
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__m256i tr0_9 = _mm256_unpackhi_epi16(in[8], in[9]);
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__m256i tr0_a = _mm256_unpacklo_epi16(in[10], in[11]);
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__m256i tr0_b = _mm256_unpackhi_epi16(in[10], in[11]);
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__m256i tr0_c = _mm256_unpacklo_epi16(in[12], in[13]);
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__m256i tr0_d = _mm256_unpackhi_epi16(in[12], in[13]);
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__m256i tr0_e = _mm256_unpacklo_epi16(in[14], in[15]);
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__m256i tr0_f = _mm256_unpackhi_epi16(in[14], in[15]);
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// 00 10 01 11 02 12 03 13 08 18 09 19 0a 1a 0b 1b
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// 04 14 05 15 06 16 07 17 0c 1c 0d 1d 0e 1e 0f 1f
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// 20 30 21 31 22 32 23 33 28 38 29 39 2a 3a 2b 3b
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// 24 34 25 35 26 36 27 37 2c 3c 2d 3d 2e 3e 2f 3f
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// 40 50 41 51 42 52 43 53 48 58 49 59 4a 5a 4b 5b
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// 44 54 45 55 46 56 47 57 4c 5c 4d 5d 4e 5e 4f 5f
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// 60 70 61 71 62 72 63 73 68 78 69 79 6a 7a 6b 7b
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// 64 74 65 75 66 76 67 77 6c 7c 6d 7d 6e 7e 6f 7f
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// 80 90 81 91 82 92 83 93 88 98 89 99 8a 9a 8b 9b
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// 84 94 85 95 86 96 87 97 8c 9c 8d 9d 8e 9e 8f 9f
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// a0 b0 a1 b1 a2 b2 a3 b3 a8 b8 a9 b9 aa ba ab bb
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// a4 b4 a5 b5 a6 b6 a7 b7 ac bc ad bd ae be af bf
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// c0 d0 c1 d1 c2 d2 c3 d3 c8 d8 c9 d9 ca da cb db
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// c4 d4 c5 d5 c6 d6 c7 d7 cc dc cd dd ce de cf df
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// e0 f0 e1 f1 e2 f2 e3 f3 e8 f8 e9 f9 ea fa eb fb
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// e4 f4 e5 f5 e6 f6 e7 f7 ec fc ed fd ee fe ef ff
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__m256i tr1_0 = _mm256_unpacklo_epi32(tr0_0, tr0_2);
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__m256i tr1_1 = _mm256_unpackhi_epi32(tr0_0, tr0_2);
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__m256i tr1_2 = _mm256_unpacklo_epi32(tr0_1, tr0_3);
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__m256i tr1_3 = _mm256_unpackhi_epi32(tr0_1, tr0_3);
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__m256i tr1_4 = _mm256_unpacklo_epi32(tr0_4, tr0_6);
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__m256i tr1_5 = _mm256_unpackhi_epi32(tr0_4, tr0_6);
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__m256i tr1_6 = _mm256_unpacklo_epi32(tr0_5, tr0_7);
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__m256i tr1_7 = _mm256_unpackhi_epi32(tr0_5, tr0_7);
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__m256i tr1_8 = _mm256_unpacklo_epi32(tr0_8, tr0_a);
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__m256i tr1_9 = _mm256_unpackhi_epi32(tr0_8, tr0_a);
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__m256i tr1_a = _mm256_unpacklo_epi32(tr0_9, tr0_b);
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__m256i tr1_b = _mm256_unpackhi_epi32(tr0_9, tr0_b);
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__m256i tr1_c = _mm256_unpacklo_epi32(tr0_c, tr0_e);
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__m256i tr1_d = _mm256_unpackhi_epi32(tr0_c, tr0_e);
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__m256i tr1_e = _mm256_unpacklo_epi32(tr0_d, tr0_f);
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__m256i tr1_f = _mm256_unpackhi_epi32(tr0_d, tr0_f);
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// 00 10 20 30 01 11 21 31 08 18 28 38 09 19 29 39
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// 02 12 22 32 03 13 23 33 0a 1a 2a 3a 0b 1b 2b 3b
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// 04 14 24 34 05 15 25 35 0c 1c 2c 3c 0d 1d 2d 3d
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// 06 16 26 36 07 17 27 37 0e 1e 2e 3e 0f 1f 2f 3f
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// 40 50 60 70 41 51 61 71 48 58 68 78 49 59 69 79
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// 42 52 62 72 43 53 63 73 4a 5a 6a 7a 4b 5b 6b 7b
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// 44 54 64 74 45 55 65 75 4c 5c 6c 7c 4d 5d 6d 7d
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// 46 56 66 76 47 57 67 77 4e 5e 6e 7e 4f 5f 6f 7f
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// 80 90 a0 b0 81 91 a1 b1 88 98 a8 b8 89 99 a9 b9
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// 82 92 a2 b2 83 93 a3 b3 8a 9a aa ba 8b 9b ab bb
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// 84 94 a4 b4 85 95 a5 b5 8c 9c ac bc 8d 9d ad bd
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// 86 96 a6 b6 87 97 a7 b7 8e ae 9e be 8f 9f af bf
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// c0 d0 e0 f0 c1 d1 e1 f1 c8 d8 e8 f8 c9 d9 e9 f9
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// c2 d2 e2 f2 c3 d3 e3 f3 ca da ea fa cb db eb fb
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// c4 d4 e4 f4 c5 d5 e5 f5 cc dc ef fc cd dd ed fd
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// c6 d6 e6 f6 c7 d7 e7 f7 ce de ee fe cf df ef ff
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tr0_0 = _mm256_unpacklo_epi64(tr1_0, tr1_4);
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tr0_1 = _mm256_unpackhi_epi64(tr1_0, tr1_4);
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tr0_2 = _mm256_unpacklo_epi64(tr1_1, tr1_5);
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tr0_3 = _mm256_unpackhi_epi64(tr1_1, tr1_5);
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tr0_4 = _mm256_unpacklo_epi64(tr1_2, tr1_6);
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tr0_5 = _mm256_unpackhi_epi64(tr1_2, tr1_6);
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tr0_6 = _mm256_unpacklo_epi64(tr1_3, tr1_7);
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tr0_7 = _mm256_unpackhi_epi64(tr1_3, tr1_7);
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tr0_8 = _mm256_unpacklo_epi64(tr1_8, tr1_c);
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tr0_9 = _mm256_unpackhi_epi64(tr1_8, tr1_c);
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tr0_a = _mm256_unpacklo_epi64(tr1_9, tr1_d);
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tr0_b = _mm256_unpackhi_epi64(tr1_9, tr1_d);
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tr0_c = _mm256_unpacklo_epi64(tr1_a, tr1_e);
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tr0_d = _mm256_unpackhi_epi64(tr1_a, tr1_e);
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tr0_e = _mm256_unpacklo_epi64(tr1_b, tr1_f);
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tr0_f = _mm256_unpackhi_epi64(tr1_b, tr1_f);
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// 00 10 20 30 40 50 60 70 08 18 28 38 48 58 68 78
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// 01 11 21 31 41 51 61 71 09 19 29 39 49 59 69 79
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// 02 12 22 32 42 52 62 72 0a 1a 2a 3a 4a 5a 6a 7a
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// 03 13 23 33 43 53 63 73 0b 1b 2b 3b 4b 5b 6b 7b
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// 04 14 24 34 44 54 64 74 0c 1c 2c 3c 4c 5c 6c 7c
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// 05 15 25 35 45 55 65 75 0d 1d 2d 3d 4d 5d 6d 7d
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// 06 16 26 36 46 56 66 76 0e 1e 2e 3e 4e 5e 6e 7e
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// 07 17 27 37 47 57 67 77 0f 1f 2f 3f 4f 5f 6f 7f
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// 80 90 a0 b0 c0 d0 e0 f0 88 98 a8 b8 c8 d8 e8 f8
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// 81 91 a1 b1 c1 d1 e1 f1 89 99 a9 b9 c9 d9 e9 f9
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// 82 92 a2 b2 c2 d2 e2 f2 8a 9a aa ba ca da ea fa
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// 83 93 a3 b3 c3 d3 e3 f3 8b 9b ab bb cb db eb fb
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// 84 94 a4 b4 c4 d4 e4 f4 8c 9c ac bc cc dc ef fc
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// 85 95 a5 b5 c5 d5 e5 f5 8d 9d ad bd cd dd ed fd
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// 86 96 a6 b6 c6 d6 e6 f6 8e ae 9e be ce de ee fe
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// 87 97 a7 b7 c7 d7 e7 f7 8f 9f af bf cf df ef ff
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in[0] = _mm256_permute2x128_si256(tr0_0, tr0_8, 0x20); // 0010 0000
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in[8] = _mm256_permute2x128_si256(tr0_0, tr0_8, 0x31); // 0011 0001
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in[1] = _mm256_permute2x128_si256(tr0_1, tr0_9, 0x20);
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in[9] = _mm256_permute2x128_si256(tr0_1, tr0_9, 0x31);
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in[2] = _mm256_permute2x128_si256(tr0_2, tr0_a, 0x20);
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in[10] = _mm256_permute2x128_si256(tr0_2, tr0_a, 0x31);
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in[3] = _mm256_permute2x128_si256(tr0_3, tr0_b, 0x20);
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in[11] = _mm256_permute2x128_si256(tr0_3, tr0_b, 0x31);
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in[4] = _mm256_permute2x128_si256(tr0_4, tr0_c, 0x20);
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in[12] = _mm256_permute2x128_si256(tr0_4, tr0_c, 0x31);
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in[5] = _mm256_permute2x128_si256(tr0_5, tr0_d, 0x20);
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in[13] = _mm256_permute2x128_si256(tr0_5, tr0_d, 0x31);
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in[6] = _mm256_permute2x128_si256(tr0_6, tr0_e, 0x20);
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in[14] = _mm256_permute2x128_si256(tr0_6, tr0_e, 0x31);
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in[7] = _mm256_permute2x128_si256(tr0_7, tr0_f, 0x20);
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in[15] = _mm256_permute2x128_si256(tr0_7, tr0_f, 0x31);
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}
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static INLINE __m256i butter_fly(__m256i a0, __m256i a1, const __m256i cospi) {
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const __m256i dct_rounding = _mm256_set1_epi32(DCT_CONST_ROUNDING);
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__m256i y0 = _mm256_madd_epi16(a0, cospi);
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__m256i y1 = _mm256_madd_epi16(a1, cospi);
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y0 = _mm256_add_epi32(y0, dct_rounding);
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y1 = _mm256_add_epi32(y1, dct_rounding);
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y0 = _mm256_srai_epi32(y0, DCT_CONST_BITS);
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y1 = _mm256_srai_epi32(y1, DCT_CONST_BITS);
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return _mm256_packs_epi32(y0, y1);
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}
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static INLINE void txfm_scaling16_avx2(const int16_t c, __m256i *in) {
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const __m256i zero = _mm256_setzero_si256();
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const __m256i sqrt2_epi16 = _mm256_set1_epi16(c);
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const __m256i dct_const_rounding = _mm256_set1_epi32(DCT_CONST_ROUNDING);
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__m256i u0, u1;
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int i = 0;
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while (i < 16) {
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in[i] = _mm256_slli_epi16(in[i], 1);
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u0 = _mm256_unpacklo_epi16(zero, in[i]);
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u1 = _mm256_unpackhi_epi16(zero, in[i]);
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u0 = _mm256_madd_epi16(u0, sqrt2_epi16);
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u1 = _mm256_madd_epi16(u1, sqrt2_epi16);
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u0 = _mm256_add_epi32(u0, dct_const_rounding);
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u1 = _mm256_add_epi32(u1, dct_const_rounding);
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u0 = _mm256_srai_epi32(u0, DCT_CONST_BITS);
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u1 = _mm256_srai_epi32(u1, DCT_CONST_BITS);
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in[i] = _mm256_packs_epi32(u0, u1);
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i++;
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}
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}
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#endif // AOM_DSP_X86_TXFM_COMMON_AVX2_H
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