ref: 64667d5af7afbe8b124cb034f8f65f5a3221f77c
dir: /vp9/encoder/x86/vp9_dct_sse2.c/
/* * Copyright (c) 2012 The WebM project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ #include <emmintrin.h> // SSE2 #include "vp9/common/vp9_idct.h" // for cospi constants void vp9_short_fdct4x4_sse2(int16_t *input, int16_t *output, int pitch) { // The 2D transform is done with two passes which are actually pretty // similar. In the first one, we transform the columns and transpose // the results. In the second one, we transform the rows. To achieve that, // as the first pass results are transposed, we tranpose the columns (that // is the transposed rows) and transpose the results (so that it goes back // in normal/row positions). const int stride = pitch >> 1; int pass; // Constants // When we use them, in one case, they are all the same. In all others // it's a pair of them that we need to repeat four times. This is done // by constructing the 32 bit constant corresponding to that pair. const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64); const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64); const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64); const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64); const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); const __m128i k__nonzero_bias_a = _mm_setr_epi16(0, 1, 1, 1, 1, 1, 1, 1); const __m128i k__nonzero_bias_b = _mm_setr_epi16(1, 0, 0, 0, 0, 0, 0, 0); const __m128i kOne = _mm_set1_epi16(1); __m128i in0, in1, in2, in3; // Load inputs. { in0 = _mm_loadl_epi64((const __m128i *)(input + 0 * stride)); in1 = _mm_loadl_epi64((const __m128i *)(input + 1 * stride)); in2 = _mm_loadl_epi64((const __m128i *)(input + 2 * stride)); in3 = _mm_loadl_epi64((const __m128i *)(input + 3 * stride)); // x = x << 4 in0 = _mm_slli_epi16(in0, 4); in1 = _mm_slli_epi16(in1, 4); in2 = _mm_slli_epi16(in2, 4); in3 = _mm_slli_epi16(in3, 4); // if (i == 0 && input[0]) input[0] += 1; { // The mask will only contain wether the first value is zero, all // other comparison will fail as something shifted by 4 (above << 4) // can never be equal to one. To increment in the non-zero case, we // add the mask and one for the first element: // - if zero, mask = -1, v = v - 1 + 1 = v // - if non-zero, mask = 0, v = v + 0 + 1 = v + 1 __m128i mask = _mm_cmpeq_epi16(in0, k__nonzero_bias_a); in0 = _mm_add_epi16(in0, mask); in0 = _mm_add_epi16(in0, k__nonzero_bias_b); } } // Do the two transform/transpose passes for (pass = 0; pass < 2; ++pass) { // Transform 1/2: Add/substract const __m128i r0 = _mm_add_epi16(in0, in3); const __m128i r1 = _mm_add_epi16(in1, in2); const __m128i r2 = _mm_sub_epi16(in1, in2); const __m128i r3 = _mm_sub_epi16(in0, in3); // Transform 1/2: Interleave to do the multiply by constants which gets us // into 32 bits. const __m128i t0 = _mm_unpacklo_epi16(r0, r1); const __m128i t2 = _mm_unpacklo_epi16(r2, r3); const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p16_p16); const __m128i u2 = _mm_madd_epi16(t0, k__cospi_p16_m16); const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p24_p08); const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m08_p24); const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING); const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING); const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS); const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS); // Combine and transpose const __m128i res0 = _mm_packs_epi32(w0, w2); const __m128i res1 = _mm_packs_epi32(w4, w6); // 00 01 02 03 20 21 22 23 // 10 11 12 13 30 31 32 33 const __m128i tr0_0 = _mm_unpacklo_epi16(res0, res1); const __m128i tr0_1 = _mm_unpackhi_epi16(res0, res1); // 00 10 01 11 02 12 03 13 // 20 30 21 31 22 32 23 33 in0 = _mm_unpacklo_epi32(tr0_0, tr0_1); in2 = _mm_unpackhi_epi32(tr0_0, tr0_1); // 00 10 20 30 01 11 21 31 in0 contains 0 followed by 1 // 02 12 22 32 03 13 23 33 in2 contains 2 followed by 3 if (0 == pass) { // Extract values in the high part for second pass as transform code // only uses the first four values. in1 = _mm_unpackhi_epi64(in0, in0); in3 = _mm_unpackhi_epi64(in2, in2); } else { // Post-condition output and store it (v + 1) >> 2, taking advantage // of the fact 1/3 are stored just after 0/2. __m128i out01 = _mm_add_epi16(in0, kOne); __m128i out23 = _mm_add_epi16(in2, kOne); out01 = _mm_srai_epi16(out01, 2); out23 = _mm_srai_epi16(out23, 2); _mm_storeu_si128((__m128i *)(output + 0 * 4), out01); _mm_storeu_si128((__m128i *)(output + 2 * 4), out23); } } } void vp9_short_fdct8x4_sse2(int16_t *input, int16_t *output, int pitch) { vp9_short_fdct4x4_sse2(input, output, pitch); vp9_short_fdct4x4_sse2(input + 4, output + 16, pitch); } void vp9_short_fdct8x8_sse2(int16_t *input, int16_t *output, int pitch) { const int stride = pitch >> 1; int pass; // Constants // When we use them, in one case, they are all the same. In all others // it's a pair of them that we need to repeat four times. This is done // by constructing the 32 bit constant corresponding to that pair. const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64); const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64); const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64); const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64); const __m128i k__cospi_p28_p04 = pair_set_epi16(cospi_28_64, cospi_4_64); const __m128i k__cospi_m04_p28 = pair_set_epi16(-cospi_4_64, cospi_28_64); const __m128i k__cospi_p12_p20 = pair_set_epi16(cospi_12_64, cospi_20_64); const __m128i k__cospi_m20_p12 = pair_set_epi16(-cospi_20_64, cospi_12_64); const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); // Load input __m128i in0 = _mm_loadu_si128((const __m128i *)(input + 0 * stride)); __m128i in1 = _mm_loadu_si128((const __m128i *)(input + 1 * stride)); __m128i in2 = _mm_loadu_si128((const __m128i *)(input + 2 * stride)); __m128i in3 = _mm_loadu_si128((const __m128i *)(input + 3 * stride)); __m128i in4 = _mm_loadu_si128((const __m128i *)(input + 4 * stride)); __m128i in5 = _mm_loadu_si128((const __m128i *)(input + 5 * stride)); __m128i in6 = _mm_loadu_si128((const __m128i *)(input + 6 * stride)); __m128i in7 = _mm_loadu_si128((const __m128i *)(input + 7 * stride)); // Pre-condition input (shift by two) in0 = _mm_slli_epi16(in0, 2); in1 = _mm_slli_epi16(in1, 2); in2 = _mm_slli_epi16(in2, 2); in3 = _mm_slli_epi16(in3, 2); in4 = _mm_slli_epi16(in4, 2); in5 = _mm_slli_epi16(in5, 2); in6 = _mm_slli_epi16(in6, 2); in7 = _mm_slli_epi16(in7, 2); // We do two passes, first the columns, then the rows. The results of the // first pass are transposed so that the same column code can be reused. The // results of the second pass are also transposed so that the rows (processed // as columns) are put back in row positions. for (pass = 0; pass < 2; pass++) { // To store results of each pass before the transpose. __m128i res0, res1, res2, res3, res4, res5, res6, res7; // Add/substract const __m128i q0 = _mm_add_epi16(in0, in7); const __m128i q1 = _mm_add_epi16(in1, in6); const __m128i q2 = _mm_add_epi16(in2, in5); const __m128i q3 = _mm_add_epi16(in3, in4); const __m128i q4 = _mm_sub_epi16(in3, in4); const __m128i q5 = _mm_sub_epi16(in2, in5); const __m128i q6 = _mm_sub_epi16(in1, in6); const __m128i q7 = _mm_sub_epi16(in0, in7); // Work on first four results { // Add/substract const __m128i r0 = _mm_add_epi16(q0, q3); const __m128i r1 = _mm_add_epi16(q1, q2); const __m128i r2 = _mm_sub_epi16(q1, q2); const __m128i r3 = _mm_sub_epi16(q0, q3); // Interleave to do the multiply by constants which gets us into 32bits const __m128i t0 = _mm_unpacklo_epi16(r0, r1); const __m128i t1 = _mm_unpackhi_epi16(r0, r1); const __m128i t2 = _mm_unpacklo_epi16(r2, r3); const __m128i t3 = _mm_unpackhi_epi16(r2, r3); const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p16_p16); const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p16_p16); const __m128i u2 = _mm_madd_epi16(t0, k__cospi_p16_m16); const __m128i u3 = _mm_madd_epi16(t1, k__cospi_p16_m16); const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p24_p08); const __m128i u5 = _mm_madd_epi16(t3, k__cospi_p24_p08); const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m08_p24); const __m128i u7 = _mm_madd_epi16(t3, k__cospi_m08_p24); // dct_const_round_shift const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING); const __m128i v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING); const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING); const __m128i v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING); const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS); const __m128i w5 = _mm_srai_epi32(v5, DCT_CONST_BITS); const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS); const __m128i w7 = _mm_srai_epi32(v7, DCT_CONST_BITS); // Combine res0 = _mm_packs_epi32(w0, w1); res4 = _mm_packs_epi32(w2, w3); res2 = _mm_packs_epi32(w4, w5); res6 = _mm_packs_epi32(w6, w7); } // Work on next four results { // Interleave to do the multiply by constants which gets us into 32bits const __m128i d0 = _mm_unpacklo_epi16(q6, q5); const __m128i d1 = _mm_unpackhi_epi16(q6, q5); const __m128i e0 = _mm_madd_epi16(d0, k__cospi_p16_m16); const __m128i e1 = _mm_madd_epi16(d1, k__cospi_p16_m16); const __m128i e2 = _mm_madd_epi16(d0, k__cospi_p16_p16); const __m128i e3 = _mm_madd_epi16(d1, k__cospi_p16_p16); // dct_const_round_shift const __m128i f0 = _mm_add_epi32(e0, k__DCT_CONST_ROUNDING); const __m128i f1 = _mm_add_epi32(e1, k__DCT_CONST_ROUNDING); const __m128i f2 = _mm_add_epi32(e2, k__DCT_CONST_ROUNDING); const __m128i f3 = _mm_add_epi32(e3, k__DCT_CONST_ROUNDING); const __m128i s0 = _mm_srai_epi32(f0, DCT_CONST_BITS); const __m128i s1 = _mm_srai_epi32(f1, DCT_CONST_BITS); const __m128i s2 = _mm_srai_epi32(f2, DCT_CONST_BITS); const __m128i s3 = _mm_srai_epi32(f3, DCT_CONST_BITS); // Combine const __m128i r0 = _mm_packs_epi32(s0, s1); const __m128i r1 = _mm_packs_epi32(s2, s3); // Add/substract const __m128i x0 = _mm_add_epi16(q4, r0); const __m128i x1 = _mm_sub_epi16(q4, r0); const __m128i x2 = _mm_sub_epi16(q7, r1); const __m128i x3 = _mm_add_epi16(q7, r1); // Interleave to do the multiply by constants which gets us into 32bits const __m128i t0 = _mm_unpacklo_epi16(x0, x3); const __m128i t1 = _mm_unpackhi_epi16(x0, x3); const __m128i t2 = _mm_unpacklo_epi16(x1, x2); const __m128i t3 = _mm_unpackhi_epi16(x1, x2); const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p28_p04); const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p28_p04); const __m128i u2 = _mm_madd_epi16(t0, k__cospi_m04_p28); const __m128i u3 = _mm_madd_epi16(t1, k__cospi_m04_p28); const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p12_p20); const __m128i u5 = _mm_madd_epi16(t3, k__cospi_p12_p20); const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m20_p12); const __m128i u7 = _mm_madd_epi16(t3, k__cospi_m20_p12); // dct_const_round_shift const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING); const __m128i v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING); const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING); const __m128i v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING); const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS); const __m128i w5 = _mm_srai_epi32(v5, DCT_CONST_BITS); const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS); const __m128i w7 = _mm_srai_epi32(v7, DCT_CONST_BITS); // Combine res1 = _mm_packs_epi32(w0, w1); res7 = _mm_packs_epi32(w2, w3); res5 = _mm_packs_epi32(w4, w5); res3 = _mm_packs_epi32(w6, w7); } // Transpose the 8x8. { // 00 01 02 03 04 05 06 07 // 10 11 12 13 14 15 16 17 // 20 21 22 23 24 25 26 27 // 30 31 32 33 34 35 36 37 // 40 41 42 43 44 45 46 47 // 50 51 52 53 54 55 56 57 // 60 61 62 63 64 65 66 67 // 70 71 72 73 74 75 76 77 const __m128i tr0_0 = _mm_unpacklo_epi16(res0, res1); const __m128i tr0_1 = _mm_unpacklo_epi16(res2, res3); const __m128i tr0_2 = _mm_unpackhi_epi16(res0, res1); const __m128i tr0_3 = _mm_unpackhi_epi16(res2, res3); const __m128i tr0_4 = _mm_unpacklo_epi16(res4, res5); const __m128i tr0_5 = _mm_unpacklo_epi16(res6, res7); const __m128i tr0_6 = _mm_unpackhi_epi16(res4, res5); const __m128i tr0_7 = _mm_unpackhi_epi16(res6, res7); // 00 10 01 11 02 12 03 13 // 20 30 21 31 22 32 23 33 // 04 14 05 15 06 16 07 17 // 24 34 25 35 26 36 27 37 // 40 50 41 51 42 52 43 53 // 60 70 61 71 62 72 63 73 // 54 54 55 55 56 56 57 57 // 64 74 65 75 66 76 67 77 const __m128i tr1_0 = _mm_unpacklo_epi32(tr0_0, tr0_1); const __m128i tr1_1 = _mm_unpacklo_epi32(tr0_2, tr0_3); const __m128i tr1_2 = _mm_unpackhi_epi32(tr0_0, tr0_1); const __m128i tr1_3 = _mm_unpackhi_epi32(tr0_2, tr0_3); const __m128i tr1_4 = _mm_unpacklo_epi32(tr0_4, tr0_5); const __m128i tr1_5 = _mm_unpacklo_epi32(tr0_6, tr0_7); const __m128i tr1_6 = _mm_unpackhi_epi32(tr0_4, tr0_5); const __m128i tr1_7 = _mm_unpackhi_epi32(tr0_6, tr0_7); // 00 10 20 30 01 11 21 31 // 40 50 60 70 41 51 61 71 // 02 12 22 32 03 13 23 33 // 42 52 62 72 43 53 63 73 // 04 14 24 34 05 15 21 36 // 44 54 64 74 45 55 61 76 // 06 16 26 36 07 17 27 37 // 46 56 66 76 47 57 67 77 in0 = _mm_unpacklo_epi64(tr1_0, tr1_4); in1 = _mm_unpackhi_epi64(tr1_0, tr1_4); in2 = _mm_unpacklo_epi64(tr1_2, tr1_6); in3 = _mm_unpackhi_epi64(tr1_2, tr1_6); in4 = _mm_unpacklo_epi64(tr1_1, tr1_5); in5 = _mm_unpackhi_epi64(tr1_1, tr1_5); in6 = _mm_unpacklo_epi64(tr1_3, tr1_7); in7 = _mm_unpackhi_epi64(tr1_3, tr1_7); // 00 10 20 30 40 50 60 70 // 01 11 21 31 41 51 61 71 // 02 12 22 32 42 52 62 72 // 03 13 23 33 43 53 63 73 // 04 14 24 34 44 54 64 74 // 05 15 25 35 45 55 65 75 // 06 16 26 36 46 56 66 76 // 07 17 27 37 47 57 67 77 } } // Post-condition output and store it { // Post-condition (division by two) // division of two 16 bits signed numbers using shifts // n / 2 = (n - (n >> 15)) >> 1 const __m128i sign_in0 = _mm_srai_epi16(in0, 15); const __m128i sign_in1 = _mm_srai_epi16(in1, 15); const __m128i sign_in2 = _mm_srai_epi16(in2, 15); const __m128i sign_in3 = _mm_srai_epi16(in3, 15); const __m128i sign_in4 = _mm_srai_epi16(in4, 15); const __m128i sign_in5 = _mm_srai_epi16(in5, 15); const __m128i sign_in6 = _mm_srai_epi16(in6, 15); const __m128i sign_in7 = _mm_srai_epi16(in7, 15); in0 = _mm_sub_epi16(in0, sign_in0); in1 = _mm_sub_epi16(in1, sign_in1); in2 = _mm_sub_epi16(in2, sign_in2); in3 = _mm_sub_epi16(in3, sign_in3); in4 = _mm_sub_epi16(in4, sign_in4); in5 = _mm_sub_epi16(in5, sign_in5); in6 = _mm_sub_epi16(in6, sign_in6); in7 = _mm_sub_epi16(in7, sign_in7); in0 = _mm_srai_epi16(in0, 1); in1 = _mm_srai_epi16(in1, 1); in2 = _mm_srai_epi16(in2, 1); in3 = _mm_srai_epi16(in3, 1); in4 = _mm_srai_epi16(in4, 1); in5 = _mm_srai_epi16(in5, 1); in6 = _mm_srai_epi16(in6, 1); in7 = _mm_srai_epi16(in7, 1); // store results _mm_storeu_si128 ((__m128i *)(output + 0 * 8), in0); _mm_storeu_si128 ((__m128i *)(output + 1 * 8), in1); _mm_storeu_si128 ((__m128i *)(output + 2 * 8), in2); _mm_storeu_si128 ((__m128i *)(output + 3 * 8), in3); _mm_storeu_si128 ((__m128i *)(output + 4 * 8), in4); _mm_storeu_si128 ((__m128i *)(output + 5 * 8), in5); _mm_storeu_si128 ((__m128i *)(output + 6 * 8), in6); _mm_storeu_si128 ((__m128i *)(output + 7 * 8), in7); } } void vp9_short_fdct16x16_sse2(int16_t *input, int16_t *output, int pitch) { // The 2D transform is done with two passes which are actually pretty // similar. In the first one, we transform the columns and transpose // the results. In the second one, we transform the rows. To achieve that, // as the first pass results are transposed, we tranpose the columns (that // is the transposed rows) and transpose the results (so that it goes back // in normal/row positions). const int stride = pitch >> 1; int pass; // We need an intermediate buffer between passes. int16_t intermediate[256]; int16_t *in = input; int16_t *out = intermediate; // Constants // When we use them, in one case, they are all the same. In all others // it's a pair of them that we need to repeat four times. This is done // by constructing the 32 bit constant corresponding to that pair. const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64); const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64); const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64); const __m128i k__cospi_m24_m08 = pair_set_epi16(-cospi_24_64, -cospi_8_64); const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64); const __m128i k__cospi_p28_p04 = pair_set_epi16(cospi_28_64, cospi_4_64); const __m128i k__cospi_m04_p28 = pair_set_epi16(-cospi_4_64, cospi_28_64); const __m128i k__cospi_p12_p20 = pair_set_epi16(cospi_12_64, cospi_20_64); const __m128i k__cospi_m20_p12 = pair_set_epi16(-cospi_20_64, cospi_12_64); const __m128i k__cospi_p30_p02 = pair_set_epi16(cospi_30_64, cospi_2_64); const __m128i k__cospi_p14_p18 = pair_set_epi16(cospi_14_64, cospi_18_64); const __m128i k__cospi_m02_p30 = pair_set_epi16(-cospi_2_64, cospi_30_64); const __m128i k__cospi_m18_p14 = pair_set_epi16(-cospi_18_64, cospi_14_64); const __m128i k__cospi_p22_p10 = pair_set_epi16(cospi_22_64, cospi_10_64); const __m128i k__cospi_p06_p26 = pair_set_epi16(cospi_6_64, cospi_26_64); const __m128i k__cospi_m10_p22 = pair_set_epi16(-cospi_10_64, cospi_22_64); const __m128i k__cospi_m26_p06 = pair_set_epi16(-cospi_26_64, cospi_6_64); const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); const __m128i kOne = _mm_set1_epi16(1); // Do the two transform/transpose passes for (pass = 0; pass < 2; ++pass) { // We process eight columns (transposed rows in second pass) at a time. int column_start; for (column_start = 0; column_start < 16; column_start += 8) { __m128i in00, in01, in02, in03, in04, in05, in06, in07; __m128i in08, in09, in10, in11, in12, in13, in14, in15; __m128i input0, input1, input2, input3, input4, input5, input6, input7; __m128i step1_0, step1_1, step1_2, step1_3; __m128i step1_4, step1_5, step1_6, step1_7; __m128i step2_1, step2_2, step2_3, step2_4, step2_5, step2_6; __m128i step3_0, step3_1, step3_2, step3_3; __m128i step3_4, step3_5, step3_6, step3_7; __m128i res00, res01, res02, res03, res04, res05, res06, res07; __m128i res08, res09, res10, res11, res12, res13, res14, res15; // Load and pre-condition input. if (0 == pass) { in00 = _mm_loadu_si128((const __m128i *)(in + 0 * stride)); in01 = _mm_loadu_si128((const __m128i *)(in + 1 * stride)); in02 = _mm_loadu_si128((const __m128i *)(in + 2 * stride)); in03 = _mm_loadu_si128((const __m128i *)(in + 3 * stride)); in04 = _mm_loadu_si128((const __m128i *)(in + 4 * stride)); in05 = _mm_loadu_si128((const __m128i *)(in + 5 * stride)); in06 = _mm_loadu_si128((const __m128i *)(in + 6 * stride)); in07 = _mm_loadu_si128((const __m128i *)(in + 7 * stride)); in08 = _mm_loadu_si128((const __m128i *)(in + 8 * stride)); in09 = _mm_loadu_si128((const __m128i *)(in + 9 * stride)); in10 = _mm_loadu_si128((const __m128i *)(in + 10 * stride)); in11 = _mm_loadu_si128((const __m128i *)(in + 11 * stride)); in12 = _mm_loadu_si128((const __m128i *)(in + 12 * stride)); in13 = _mm_loadu_si128((const __m128i *)(in + 13 * stride)); in14 = _mm_loadu_si128((const __m128i *)(in + 14 * stride)); in15 = _mm_loadu_si128((const __m128i *)(in + 15 * stride)); // x = x << 2 in00 = _mm_slli_epi16(in00, 2); in01 = _mm_slli_epi16(in01, 2); in02 = _mm_slli_epi16(in02, 2); in03 = _mm_slli_epi16(in03, 2); in04 = _mm_slli_epi16(in04, 2); in05 = _mm_slli_epi16(in05, 2); in06 = _mm_slli_epi16(in06, 2); in07 = _mm_slli_epi16(in07, 2); in08 = _mm_slli_epi16(in08, 2); in09 = _mm_slli_epi16(in09, 2); in10 = _mm_slli_epi16(in10, 2); in11 = _mm_slli_epi16(in11, 2); in12 = _mm_slli_epi16(in12, 2); in13 = _mm_slli_epi16(in13, 2); in14 = _mm_slli_epi16(in14, 2); in15 = _mm_slli_epi16(in15, 2); } else { in00 = _mm_loadu_si128((const __m128i *)(in + 0 * 16)); in01 = _mm_loadu_si128((const __m128i *)(in + 1 * 16)); in02 = _mm_loadu_si128((const __m128i *)(in + 2 * 16)); in03 = _mm_loadu_si128((const __m128i *)(in + 3 * 16)); in04 = _mm_loadu_si128((const __m128i *)(in + 4 * 16)); in05 = _mm_loadu_si128((const __m128i *)(in + 5 * 16)); in06 = _mm_loadu_si128((const __m128i *)(in + 6 * 16)); in07 = _mm_loadu_si128((const __m128i *)(in + 7 * 16)); in08 = _mm_loadu_si128((const __m128i *)(in + 8 * 16)); in09 = _mm_loadu_si128((const __m128i *)(in + 9 * 16)); in10 = _mm_loadu_si128((const __m128i *)(in + 10 * 16)); in11 = _mm_loadu_si128((const __m128i *)(in + 11 * 16)); in12 = _mm_loadu_si128((const __m128i *)(in + 12 * 16)); in13 = _mm_loadu_si128((const __m128i *)(in + 13 * 16)); in14 = _mm_loadu_si128((const __m128i *)(in + 14 * 16)); in15 = _mm_loadu_si128((const __m128i *)(in + 15 * 16)); // x = (x + 1) >> 2 in00 = _mm_add_epi16(in00, kOne); in01 = _mm_add_epi16(in01, kOne); in02 = _mm_add_epi16(in02, kOne); in03 = _mm_add_epi16(in03, kOne); in04 = _mm_add_epi16(in04, kOne); in05 = _mm_add_epi16(in05, kOne); in06 = _mm_add_epi16(in06, kOne); in07 = _mm_add_epi16(in07, kOne); in08 = _mm_add_epi16(in08, kOne); in09 = _mm_add_epi16(in09, kOne); in10 = _mm_add_epi16(in10, kOne); in11 = _mm_add_epi16(in11, kOne); in12 = _mm_add_epi16(in12, kOne); in13 = _mm_add_epi16(in13, kOne); in14 = _mm_add_epi16(in14, kOne); in15 = _mm_add_epi16(in15, kOne); in00 = _mm_srai_epi16(in00, 2); in01 = _mm_srai_epi16(in01, 2); in02 = _mm_srai_epi16(in02, 2); in03 = _mm_srai_epi16(in03, 2); in04 = _mm_srai_epi16(in04, 2); in05 = _mm_srai_epi16(in05, 2); in06 = _mm_srai_epi16(in06, 2); in07 = _mm_srai_epi16(in07, 2); in08 = _mm_srai_epi16(in08, 2); in09 = _mm_srai_epi16(in09, 2); in10 = _mm_srai_epi16(in10, 2); in11 = _mm_srai_epi16(in11, 2); in12 = _mm_srai_epi16(in12, 2); in13 = _mm_srai_epi16(in13, 2); in14 = _mm_srai_epi16(in14, 2); in15 = _mm_srai_epi16(in15, 2); } in += 8; // Calculate input for the first 8 results. { input0 = _mm_add_epi16(in00, in15); input1 = _mm_add_epi16(in01, in14); input2 = _mm_add_epi16(in02, in13); input3 = _mm_add_epi16(in03, in12); input4 = _mm_add_epi16(in04, in11); input5 = _mm_add_epi16(in05, in10); input6 = _mm_add_epi16(in06, in09); input7 = _mm_add_epi16(in07, in08); } // Calculate input for the next 8 results. { step1_0 = _mm_sub_epi16(in07, in08); step1_1 = _mm_sub_epi16(in06, in09); step1_2 = _mm_sub_epi16(in05, in10); step1_3 = _mm_sub_epi16(in04, in11); step1_4 = _mm_sub_epi16(in03, in12); step1_5 = _mm_sub_epi16(in02, in13); step1_6 = _mm_sub_epi16(in01, in14); step1_7 = _mm_sub_epi16(in00, in15); } // Work on the first eight values; fdct8_1d(input, even_results); { // Add/substract const __m128i q0 = _mm_add_epi16(input0, input7); const __m128i q1 = _mm_add_epi16(input1, input6); const __m128i q2 = _mm_add_epi16(input2, input5); const __m128i q3 = _mm_add_epi16(input3, input4); const __m128i q4 = _mm_sub_epi16(input3, input4); const __m128i q5 = _mm_sub_epi16(input2, input5); const __m128i q6 = _mm_sub_epi16(input1, input6); const __m128i q7 = _mm_sub_epi16(input0, input7); // Work on first four results { // Add/substract const __m128i r0 = _mm_add_epi16(q0, q3); const __m128i r1 = _mm_add_epi16(q1, q2); const __m128i r2 = _mm_sub_epi16(q1, q2); const __m128i r3 = _mm_sub_epi16(q0, q3); // Interleave to do the multiply by constants which gets us // into 32 bits. const __m128i t0 = _mm_unpacklo_epi16(r0, r1); const __m128i t1 = _mm_unpackhi_epi16(r0, r1); const __m128i t2 = _mm_unpacklo_epi16(r2, r3); const __m128i t3 = _mm_unpackhi_epi16(r2, r3); const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p16_p16); const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p16_p16); const __m128i u2 = _mm_madd_epi16(t0, k__cospi_p16_m16); const __m128i u3 = _mm_madd_epi16(t1, k__cospi_p16_m16); const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p24_p08); const __m128i u5 = _mm_madd_epi16(t3, k__cospi_p24_p08); const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m08_p24); const __m128i u7 = _mm_madd_epi16(t3, k__cospi_m08_p24); // dct_const_round_shift const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING); const __m128i v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING); const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING); const __m128i v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING); const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS); const __m128i w5 = _mm_srai_epi32(v5, DCT_CONST_BITS); const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS); const __m128i w7 = _mm_srai_epi32(v7, DCT_CONST_BITS); // Combine res00 = _mm_packs_epi32(w0, w1); res08 = _mm_packs_epi32(w2, w3); res04 = _mm_packs_epi32(w4, w5); res12 = _mm_packs_epi32(w6, w7); } // Work on next four results { // Interleave to do the multiply by constants which gets us // into 32 bits. const __m128i d0 = _mm_unpacklo_epi16(q6, q5); const __m128i d1 = _mm_unpackhi_epi16(q6, q5); const __m128i e0 = _mm_madd_epi16(d0, k__cospi_p16_m16); const __m128i e1 = _mm_madd_epi16(d1, k__cospi_p16_m16); const __m128i e2 = _mm_madd_epi16(d0, k__cospi_p16_p16); const __m128i e3 = _mm_madd_epi16(d1, k__cospi_p16_p16); // dct_const_round_shift const __m128i f0 = _mm_add_epi32(e0, k__DCT_CONST_ROUNDING); const __m128i f1 = _mm_add_epi32(e1, k__DCT_CONST_ROUNDING); const __m128i f2 = _mm_add_epi32(e2, k__DCT_CONST_ROUNDING); const __m128i f3 = _mm_add_epi32(e3, k__DCT_CONST_ROUNDING); const __m128i s0 = _mm_srai_epi32(f0, DCT_CONST_BITS); const __m128i s1 = _mm_srai_epi32(f1, DCT_CONST_BITS); const __m128i s2 = _mm_srai_epi32(f2, DCT_CONST_BITS); const __m128i s3 = _mm_srai_epi32(f3, DCT_CONST_BITS); // Combine const __m128i r0 = _mm_packs_epi32(s0, s1); const __m128i r1 = _mm_packs_epi32(s2, s3); // Add/substract const __m128i x0 = _mm_add_epi16(q4, r0); const __m128i x1 = _mm_sub_epi16(q4, r0); const __m128i x2 = _mm_sub_epi16(q7, r1); const __m128i x3 = _mm_add_epi16(q7, r1); // Interleave to do the multiply by constants which gets us // into 32 bits. const __m128i t0 = _mm_unpacklo_epi16(x0, x3); const __m128i t1 = _mm_unpackhi_epi16(x0, x3); const __m128i t2 = _mm_unpacklo_epi16(x1, x2); const __m128i t3 = _mm_unpackhi_epi16(x1, x2); const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p28_p04); const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p28_p04); const __m128i u2 = _mm_madd_epi16(t0, k__cospi_m04_p28); const __m128i u3 = _mm_madd_epi16(t1, k__cospi_m04_p28); const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p12_p20); const __m128i u5 = _mm_madd_epi16(t3, k__cospi_p12_p20); const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m20_p12); const __m128i u7 = _mm_madd_epi16(t3, k__cospi_m20_p12); // dct_const_round_shift const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING); const __m128i v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING); const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING); const __m128i v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING); const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS); const __m128i w5 = _mm_srai_epi32(v5, DCT_CONST_BITS); const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS); const __m128i w7 = _mm_srai_epi32(v7, DCT_CONST_BITS); // Combine res02 = _mm_packs_epi32(w0, w1); res14 = _mm_packs_epi32(w2, w3); res10 = _mm_packs_epi32(w4, w5); res06 = _mm_packs_epi32(w6, w7); } } // Work on the next eight values; step1 -> odd_results { // step 2 { const __m128i t0 = _mm_unpacklo_epi16(step1_5, step1_2); const __m128i t1 = _mm_unpackhi_epi16(step1_5, step1_2); const __m128i t2 = _mm_unpacklo_epi16(step1_4, step1_3); const __m128i t3 = _mm_unpackhi_epi16(step1_4, step1_3); const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p16_m16); const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p16_m16); const __m128i u2 = _mm_madd_epi16(t2, k__cospi_p16_m16); const __m128i u3 = _mm_madd_epi16(t3, k__cospi_p16_m16); // dct_const_round_shift const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); // Combine step2_2 = _mm_packs_epi32(w0, w1); step2_3 = _mm_packs_epi32(w2, w3); } { const __m128i t0 = _mm_unpacklo_epi16(step1_5, step1_2); const __m128i t1 = _mm_unpackhi_epi16(step1_5, step1_2); const __m128i t2 = _mm_unpacklo_epi16(step1_4, step1_3); const __m128i t3 = _mm_unpackhi_epi16(step1_4, step1_3); const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p16_p16); const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p16_p16); const __m128i u2 = _mm_madd_epi16(t2, k__cospi_p16_p16); const __m128i u3 = _mm_madd_epi16(t3, k__cospi_p16_p16); // dct_const_round_shift const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); // Combine step2_5 = _mm_packs_epi32(w0, w1); step2_4 = _mm_packs_epi32(w2, w3); } // step 3 { step3_0 = _mm_add_epi16(step1_0, step2_3); step3_1 = _mm_add_epi16(step1_1, step2_2); step3_2 = _mm_sub_epi16(step1_1, step2_2); step3_3 = _mm_sub_epi16(step1_0, step2_3); step3_4 = _mm_sub_epi16(step1_7, step2_4); step3_5 = _mm_sub_epi16(step1_6, step2_5); step3_6 = _mm_add_epi16(step1_6, step2_5); step3_7 = _mm_add_epi16(step1_7, step2_4); } // step 4 { const __m128i t0 = _mm_unpacklo_epi16(step3_1, step3_6); const __m128i t1 = _mm_unpackhi_epi16(step3_1, step3_6); const __m128i t2 = _mm_unpacklo_epi16(step3_2, step3_5); const __m128i t3 = _mm_unpackhi_epi16(step3_2, step3_5); const __m128i u0 = _mm_madd_epi16(t0, k__cospi_m08_p24); const __m128i u1 = _mm_madd_epi16(t1, k__cospi_m08_p24); const __m128i u2 = _mm_madd_epi16(t2, k__cospi_m24_m08); const __m128i u3 = _mm_madd_epi16(t3, k__cospi_m24_m08); // dct_const_round_shift const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); // Combine step2_1 = _mm_packs_epi32(w0, w1); step2_2 = _mm_packs_epi32(w2, w3); } { const __m128i t0 = _mm_unpacklo_epi16(step3_1, step3_6); const __m128i t1 = _mm_unpackhi_epi16(step3_1, step3_6); const __m128i t2 = _mm_unpacklo_epi16(step3_2, step3_5); const __m128i t3 = _mm_unpackhi_epi16(step3_2, step3_5); const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p24_p08); const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p24_p08); const __m128i u2 = _mm_madd_epi16(t2, k__cospi_m08_p24); const __m128i u3 = _mm_madd_epi16(t3, k__cospi_m08_p24); // dct_const_round_shift const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); // Combine step2_6 = _mm_packs_epi32(w0, w1); step2_5 = _mm_packs_epi32(w2, w3); } // step 5 { step1_0 = _mm_add_epi16(step3_0, step2_1); step1_1 = _mm_sub_epi16(step3_0, step2_1); step1_2 = _mm_sub_epi16(step3_3, step2_2); step1_3 = _mm_add_epi16(step3_3, step2_2); step1_4 = _mm_add_epi16(step3_4, step2_5); step1_5 = _mm_sub_epi16(step3_4, step2_5); step1_6 = _mm_sub_epi16(step3_7, step2_6); step1_7 = _mm_add_epi16(step3_7, step2_6); } // step 6 { const __m128i t0 = _mm_unpacklo_epi16(step1_0, step1_7); const __m128i t1 = _mm_unpackhi_epi16(step1_0, step1_7); const __m128i t2 = _mm_unpacklo_epi16(step1_1, step1_6); const __m128i t3 = _mm_unpackhi_epi16(step1_1, step1_6); const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p30_p02); const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p30_p02); const __m128i u2 = _mm_madd_epi16(t2, k__cospi_p14_p18); const __m128i u3 = _mm_madd_epi16(t3, k__cospi_p14_p18); // dct_const_round_shift const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); // Combine res01 = _mm_packs_epi32(w0, w1); res09 = _mm_packs_epi32(w2, w3); } { const __m128i t0 = _mm_unpacklo_epi16(step1_2, step1_5); const __m128i t1 = _mm_unpackhi_epi16(step1_2, step1_5); const __m128i t2 = _mm_unpacklo_epi16(step1_3, step1_4); const __m128i t3 = _mm_unpackhi_epi16(step1_3, step1_4); const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p22_p10); const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p22_p10); const __m128i u2 = _mm_madd_epi16(t2, k__cospi_p06_p26); const __m128i u3 = _mm_madd_epi16(t3, k__cospi_p06_p26); // dct_const_round_shift const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); // Combine res05 = _mm_packs_epi32(w0, w1); res13 = _mm_packs_epi32(w2, w3); } { const __m128i t0 = _mm_unpacklo_epi16(step1_2, step1_5); const __m128i t1 = _mm_unpackhi_epi16(step1_2, step1_5); const __m128i t2 = _mm_unpacklo_epi16(step1_3, step1_4); const __m128i t3 = _mm_unpackhi_epi16(step1_3, step1_4); const __m128i u0 = _mm_madd_epi16(t0, k__cospi_m10_p22); const __m128i u1 = _mm_madd_epi16(t1, k__cospi_m10_p22); const __m128i u2 = _mm_madd_epi16(t2, k__cospi_m26_p06); const __m128i u3 = _mm_madd_epi16(t3, k__cospi_m26_p06); // dct_const_round_shift const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); // Combine res11 = _mm_packs_epi32(w0, w1); res03 = _mm_packs_epi32(w2, w3); } { const __m128i t0 = _mm_unpacklo_epi16(step1_0, step1_7); const __m128i t1 = _mm_unpackhi_epi16(step1_0, step1_7); const __m128i t2 = _mm_unpacklo_epi16(step1_1, step1_6); const __m128i t3 = _mm_unpackhi_epi16(step1_1, step1_6); const __m128i u0 = _mm_madd_epi16(t0, k__cospi_m02_p30); const __m128i u1 = _mm_madd_epi16(t1, k__cospi_m02_p30); const __m128i u2 = _mm_madd_epi16(t2, k__cospi_m18_p14); const __m128i u3 = _mm_madd_epi16(t3, k__cospi_m18_p14); // dct_const_round_shift const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); // Combine res15 = _mm_packs_epi32(w0, w1); res07 = _mm_packs_epi32(w2, w3); } } // Transpose the results, do it as two 8x8 transposes. { // 00 01 02 03 04 05 06 07 // 10 11 12 13 14 15 16 17 // 20 21 22 23 24 25 26 27 // 30 31 32 33 34 35 36 37 // 40 41 42 43 44 45 46 47 // 50 51 52 53 54 55 56 57 // 60 61 62 63 64 65 66 67 // 70 71 72 73 74 75 76 77 const __m128i tr0_0 = _mm_unpacklo_epi16(res00, res01); const __m128i tr0_1 = _mm_unpacklo_epi16(res02, res03); const __m128i tr0_2 = _mm_unpackhi_epi16(res00, res01); const __m128i tr0_3 = _mm_unpackhi_epi16(res02, res03); const __m128i tr0_4 = _mm_unpacklo_epi16(res04, res05); const __m128i tr0_5 = _mm_unpacklo_epi16(res06, res07); const __m128i tr0_6 = _mm_unpackhi_epi16(res04, res05); const __m128i tr0_7 = _mm_unpackhi_epi16(res06, res07); // 00 10 01 11 02 12 03 13 // 20 30 21 31 22 32 23 33 // 04 14 05 15 06 16 07 17 // 24 34 25 35 26 36 27 37 // 40 50 41 51 42 52 43 53 // 60 70 61 71 62 72 63 73 // 54 54 55 55 56 56 57 57 // 64 74 65 75 66 76 67 77 const __m128i tr1_0 = _mm_unpacklo_epi32(tr0_0, tr0_1); const __m128i tr1_1 = _mm_unpacklo_epi32(tr0_2, tr0_3); const __m128i tr1_2 = _mm_unpackhi_epi32(tr0_0, tr0_1); const __m128i tr1_3 = _mm_unpackhi_epi32(tr0_2, tr0_3); const __m128i tr1_4 = _mm_unpacklo_epi32(tr0_4, tr0_5); const __m128i tr1_5 = _mm_unpacklo_epi32(tr0_6, tr0_7); const __m128i tr1_6 = _mm_unpackhi_epi32(tr0_4, tr0_5); const __m128i tr1_7 = _mm_unpackhi_epi32(tr0_6, tr0_7); // 00 10 20 30 01 11 21 31 // 40 50 60 70 41 51 61 71 // 02 12 22 32 03 13 23 33 // 42 52 62 72 43 53 63 73 // 04 14 24 34 05 15 21 36 // 44 54 64 74 45 55 61 76 // 06 16 26 36 07 17 27 37 // 46 56 66 76 47 57 67 77 const __m128i tr2_0 = _mm_unpacklo_epi64(tr1_0, tr1_4); const __m128i tr2_1 = _mm_unpackhi_epi64(tr1_0, tr1_4); const __m128i tr2_2 = _mm_unpacklo_epi64(tr1_2, tr1_6); const __m128i tr2_3 = _mm_unpackhi_epi64(tr1_2, tr1_6); const __m128i tr2_4 = _mm_unpacklo_epi64(tr1_1, tr1_5); const __m128i tr2_5 = _mm_unpackhi_epi64(tr1_1, tr1_5); const __m128i tr2_6 = _mm_unpacklo_epi64(tr1_3, tr1_7); const __m128i tr2_7 = _mm_unpackhi_epi64(tr1_3, tr1_7); // 00 10 20 30 40 50 60 70 // 01 11 21 31 41 51 61 71 // 02 12 22 32 42 52 62 72 // 03 13 23 33 43 53 63 73 // 04 14 24 34 44 54 64 74 // 05 15 25 35 45 55 65 75 // 06 16 26 36 46 56 66 76 // 07 17 27 37 47 57 67 77 _mm_storeu_si128 ((__m128i *)(out + 0 * 16), tr2_0); _mm_storeu_si128 ((__m128i *)(out + 1 * 16), tr2_1); _mm_storeu_si128 ((__m128i *)(out + 2 * 16), tr2_2); _mm_storeu_si128 ((__m128i *)(out + 3 * 16), tr2_3); _mm_storeu_si128 ((__m128i *)(out + 4 * 16), tr2_4); _mm_storeu_si128 ((__m128i *)(out + 5 * 16), tr2_5); _mm_storeu_si128 ((__m128i *)(out + 6 * 16), tr2_6); _mm_storeu_si128 ((__m128i *)(out + 7 * 16), tr2_7); } { // 00 01 02 03 04 05 06 07 // 10 11 12 13 14 15 16 17 // 20 21 22 23 24 25 26 27 // 30 31 32 33 34 35 36 37 // 40 41 42 43 44 45 46 47 // 50 51 52 53 54 55 56 57 // 60 61 62 63 64 65 66 67 // 70 71 72 73 74 75 76 77 const __m128i tr0_0 = _mm_unpacklo_epi16(res08, res09); const __m128i tr0_1 = _mm_unpacklo_epi16(res10, res11); const __m128i tr0_2 = _mm_unpackhi_epi16(res08, res09); const __m128i tr0_3 = _mm_unpackhi_epi16(res10, res11); const __m128i tr0_4 = _mm_unpacklo_epi16(res12, res13); const __m128i tr0_5 = _mm_unpacklo_epi16(res14, res15); const __m128i tr0_6 = _mm_unpackhi_epi16(res12, res13); const __m128i tr0_7 = _mm_unpackhi_epi16(res14, res15); // 00 10 01 11 02 12 03 13 // 20 30 21 31 22 32 23 33 // 04 14 05 15 06 16 07 17 // 24 34 25 35 26 36 27 37 // 40 50 41 51 42 52 43 53 // 60 70 61 71 62 72 63 73 // 54 54 55 55 56 56 57 57 // 64 74 65 75 66 76 67 77 const __m128i tr1_0 = _mm_unpacklo_epi32(tr0_0, tr0_1); const __m128i tr1_1 = _mm_unpacklo_epi32(tr0_2, tr0_3); const __m128i tr1_2 = _mm_unpackhi_epi32(tr0_0, tr0_1); const __m128i tr1_3 = _mm_unpackhi_epi32(tr0_2, tr0_3); const __m128i tr1_4 = _mm_unpacklo_epi32(tr0_4, tr0_5); const __m128i tr1_5 = _mm_unpacklo_epi32(tr0_6, tr0_7); const __m128i tr1_6 = _mm_unpackhi_epi32(tr0_4, tr0_5); const __m128i tr1_7 = _mm_unpackhi_epi32(tr0_6, tr0_7); // 00 10 20 30 01 11 21 31 // 40 50 60 70 41 51 61 71 // 02 12 22 32 03 13 23 33 // 42 52 62 72 43 53 63 73 // 04 14 24 34 05 15 21 36 // 44 54 64 74 45 55 61 76 // 06 16 26 36 07 17 27 37 // 46 56 66 76 47 57 67 77 const __m128i tr2_0 = _mm_unpacklo_epi64(tr1_0, tr1_4); const __m128i tr2_1 = _mm_unpackhi_epi64(tr1_0, tr1_4); const __m128i tr2_2 = _mm_unpacklo_epi64(tr1_2, tr1_6); const __m128i tr2_3 = _mm_unpackhi_epi64(tr1_2, tr1_6); const __m128i tr2_4 = _mm_unpacklo_epi64(tr1_1, tr1_5); const __m128i tr2_5 = _mm_unpackhi_epi64(tr1_1, tr1_5); const __m128i tr2_6 = _mm_unpacklo_epi64(tr1_3, tr1_7); const __m128i tr2_7 = _mm_unpackhi_epi64(tr1_3, tr1_7); // 00 10 20 30 40 50 60 70 // 01 11 21 31 41 51 61 71 // 02 12 22 32 42 52 62 72 // 03 13 23 33 43 53 63 73 // 04 14 24 34 44 54 64 74 // 05 15 25 35 45 55 65 75 // 06 16 26 36 46 56 66 76 // 07 17 27 37 47 57 67 77 // Store results _mm_storeu_si128 ((__m128i *)(out + 8 + 0 * 16), tr2_0); _mm_storeu_si128 ((__m128i *)(out + 8 + 1 * 16), tr2_1); _mm_storeu_si128 ((__m128i *)(out + 8 + 2 * 16), tr2_2); _mm_storeu_si128 ((__m128i *)(out + 8 + 3 * 16), tr2_3); _mm_storeu_si128 ((__m128i *)(out + 8 + 4 * 16), tr2_4); _mm_storeu_si128 ((__m128i *)(out + 8 + 5 * 16), tr2_5); _mm_storeu_si128 ((__m128i *)(out + 8 + 6 * 16), tr2_6); _mm_storeu_si128 ((__m128i *)(out + 8 + 7 * 16), tr2_7); } out += 8*16; } // Setup in/out for next pass. in = intermediate; out = output; } }