1da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian/* 2da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian * Copyright (c) 2014 The WebM project authors. All Rights Reserved. 3da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian * 4da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian * Use of this source code is governed by a BSD-style license 5da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian * that can be found in the LICENSE file in the root of the source 6da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian * tree. An additional intellectual property rights grant can be found 7da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian * in the file PATENTS. All contributing project authors may 8da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian * be found in the AUTHORS file in the root of the source tree. 9da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian */ 10da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian 11da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#include <emmintrin.h> // SSE2 12da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian 13da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#include "./vpx_dsp_rtcd.h" 14da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#include "vpx_dsp/txfm_common.h" 15da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#include "vpx_dsp/x86/fwd_txfm_sse2.h" 16da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#include "vpx_dsp/x86/txfm_common_sse2.h" 17da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#include "vpx_ports/mem.h" 18da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian 19da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian// TODO(jingning) The high bit-depth functions need rework for performance. 20da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian// After we properly fix the high bit-depth function implementations, this 21da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian// file's dependency should be substantially simplified. 22da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 23da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#define ADD_EPI16 _mm_adds_epi16 24da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#define SUB_EPI16 _mm_subs_epi16 25da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian 26da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#else 27da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#define ADD_EPI16 _mm_add_epi16 28da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#define SUB_EPI16 _mm_sub_epi16 29da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif 30da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian 31da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanianvoid FDCT4x4_2D(const int16_t *input, tran_low_t *output, int stride) { 32da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // This 2D transform implements 4 vertical 1D transforms followed 33da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // by 4 horizontal 1D transforms. The multiplies and adds are as given 34da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // by Chen, Smith and Fralick ('77). The commands for moving the data 35da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // around have been minimized by hand. 36da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // For the purposes of the comments, the 16 inputs are referred to at i0 37da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // through iF (in raster order), intermediate variables are a0, b0, c0 38da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // through f, and correspond to the in-place computations mapped to input 39da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // locations. The outputs, o0 through oF are labeled according to the 40da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // output locations. 41da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian 42da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Constants 43da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // These are the coefficients used for the multiplies. 44da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // In the comments, pN means cos(N pi /64) and mN is -cos(N pi /64), 45da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // where cospi_N_64 = cos(N pi /64) 467bc9febe8749e98a3812a0dc4380ceae75c29450Johann const __m128i k__cospi_A = 477bc9febe8749e98a3812a0dc4380ceae75c29450Johann octa_set_epi16(cospi_16_64, cospi_16_64, cospi_16_64, cospi_16_64, 487bc9febe8749e98a3812a0dc4380ceae75c29450Johann cospi_16_64, -cospi_16_64, cospi_16_64, -cospi_16_64); 497bc9febe8749e98a3812a0dc4380ceae75c29450Johann const __m128i k__cospi_B = 507bc9febe8749e98a3812a0dc4380ceae75c29450Johann octa_set_epi16(cospi_16_64, -cospi_16_64, cospi_16_64, -cospi_16_64, 517bc9febe8749e98a3812a0dc4380ceae75c29450Johann cospi_16_64, cospi_16_64, cospi_16_64, cospi_16_64); 527bc9febe8749e98a3812a0dc4380ceae75c29450Johann const __m128i k__cospi_C = 537bc9febe8749e98a3812a0dc4380ceae75c29450Johann octa_set_epi16(cospi_8_64, cospi_24_64, cospi_8_64, cospi_24_64, 547bc9febe8749e98a3812a0dc4380ceae75c29450Johann cospi_24_64, -cospi_8_64, cospi_24_64, -cospi_8_64); 557bc9febe8749e98a3812a0dc4380ceae75c29450Johann const __m128i k__cospi_D = 567bc9febe8749e98a3812a0dc4380ceae75c29450Johann octa_set_epi16(cospi_24_64, -cospi_8_64, cospi_24_64, -cospi_8_64, 577bc9febe8749e98a3812a0dc4380ceae75c29450Johann cospi_8_64, cospi_24_64, cospi_8_64, cospi_24_64); 587bc9febe8749e98a3812a0dc4380ceae75c29450Johann const __m128i k__cospi_E = 597bc9febe8749e98a3812a0dc4380ceae75c29450Johann octa_set_epi16(cospi_16_64, cospi_16_64, cospi_16_64, cospi_16_64, 607bc9febe8749e98a3812a0dc4380ceae75c29450Johann cospi_16_64, cospi_16_64, cospi_16_64, cospi_16_64); 617bc9febe8749e98a3812a0dc4380ceae75c29450Johann const __m128i k__cospi_F = 627bc9febe8749e98a3812a0dc4380ceae75c29450Johann octa_set_epi16(cospi_16_64, -cospi_16_64, cospi_16_64, -cospi_16_64, 637bc9febe8749e98a3812a0dc4380ceae75c29450Johann cospi_16_64, -cospi_16_64, cospi_16_64, -cospi_16_64); 647bc9febe8749e98a3812a0dc4380ceae75c29450Johann const __m128i k__cospi_G = 657bc9febe8749e98a3812a0dc4380ceae75c29450Johann octa_set_epi16(cospi_8_64, cospi_24_64, cospi_8_64, cospi_24_64, 667bc9febe8749e98a3812a0dc4380ceae75c29450Johann -cospi_8_64, -cospi_24_64, -cospi_8_64, -cospi_24_64); 677bc9febe8749e98a3812a0dc4380ceae75c29450Johann const __m128i k__cospi_H = 687bc9febe8749e98a3812a0dc4380ceae75c29450Johann octa_set_epi16(cospi_24_64, -cospi_8_64, cospi_24_64, -cospi_8_64, 697bc9febe8749e98a3812a0dc4380ceae75c29450Johann -cospi_24_64, cospi_8_64, -cospi_24_64, cospi_8_64); 70da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian 71da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); 72da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // This second rounding constant saves doing some extra adds at the end 737bc9febe8749e98a3812a0dc4380ceae75c29450Johann const __m128i k__DCT_CONST_ROUNDING2 = 747bc9febe8749e98a3812a0dc4380ceae75c29450Johann _mm_set1_epi32(DCT_CONST_ROUNDING + (DCT_CONST_ROUNDING << 1)); 757bc9febe8749e98a3812a0dc4380ceae75c29450Johann const int DCT_CONST_BITS2 = DCT_CONST_BITS + 2; 76da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__nonzero_bias_a = _mm_setr_epi16(0, 1, 1, 1, 1, 1, 1, 1); 77da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__nonzero_bias_b = _mm_setr_epi16(1, 0, 0, 0, 0, 0, 0, 0); 78da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian __m128i in0, in1; 79da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 80da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian __m128i cmp0, cmp1; 81da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian int test, overflow; 82da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif 83da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian 84da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Load inputs. 857bc9febe8749e98a3812a0dc4380ceae75c29450Johann in0 = _mm_loadl_epi64((const __m128i *)(input + 0 * stride)); 867bc9febe8749e98a3812a0dc4380ceae75c29450Johann in1 = _mm_loadl_epi64((const __m128i *)(input + 1 * stride)); 877bc9febe8749e98a3812a0dc4380ceae75c29450Johann in1 = _mm_unpacklo_epi64( 887bc9febe8749e98a3812a0dc4380ceae75c29450Johann in1, _mm_loadl_epi64((const __m128i *)(input + 2 * stride))); 897bc9febe8749e98a3812a0dc4380ceae75c29450Johann in0 = _mm_unpacklo_epi64( 907bc9febe8749e98a3812a0dc4380ceae75c29450Johann in0, _mm_loadl_epi64((const __m128i *)(input + 3 * stride))); 917bc9febe8749e98a3812a0dc4380ceae75c29450Johann// in0 = [i0 i1 i2 i3 iC iD iE iF] 927bc9febe8749e98a3812a0dc4380ceae75c29450Johann// in1 = [i4 i5 i6 i7 i8 i9 iA iB] 93da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 94da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Check inputs small enough to use optimised code 95da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian cmp0 = _mm_xor_si128(_mm_cmpgt_epi16(in0, _mm_set1_epi16(0x3ff)), 96da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian _mm_cmplt_epi16(in0, _mm_set1_epi16(0xfc00))); 97da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian cmp1 = _mm_xor_si128(_mm_cmpgt_epi16(in1, _mm_set1_epi16(0x3ff)), 98da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian _mm_cmplt_epi16(in1, _mm_set1_epi16(0xfc00))); 99da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian test = _mm_movemask_epi8(_mm_or_si128(cmp0, cmp1)); 100da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (test) { 101da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct4x4_c(input, output, stride); 102da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 103da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 104da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 105da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian 106da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // multiply by 16 to give some extra precision 107da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in0 = _mm_slli_epi16(in0, 4); 108da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in1 = _mm_slli_epi16(in1, 4); 109da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // if (i == 0 && input[0]) input[0] += 1; 110da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // add 1 to the upper left pixel if it is non-zero, which helps reduce 111da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // the round-trip error 112da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 113da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // The mask will only contain whether the first value is zero, all 114da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // other comparison will fail as something shifted by 4 (above << 4) 115da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // can never be equal to one. To increment in the non-zero case, we 116da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // add the mask and one for the first element: 117da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // - if zero, mask = -1, v = v - 1 + 1 = v 118da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // - if non-zero, mask = 0, v = v + 0 + 1 = v + 1 119da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian __m128i mask = _mm_cmpeq_epi16(in0, k__nonzero_bias_a); 120da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in0 = _mm_add_epi16(in0, mask); 121da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in0 = _mm_add_epi16(in0, k__nonzero_bias_b); 122da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 123da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // There are 4 total stages, alternating between an add/subtract stage 124da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // followed by an multiply-and-add stage. 125da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 126da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Stage 1: Add/subtract 127da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian 128da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // in0 = [i0 i1 i2 i3 iC iD iE iF] 129da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // in1 = [i4 i5 i6 i7 i8 i9 iA iB] 130da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i r0 = _mm_unpacklo_epi16(in0, in1); 131da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i r1 = _mm_unpackhi_epi16(in0, in1); 132da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // r0 = [i0 i4 i1 i5 i2 i6 i3 i7] 133da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // r1 = [iC i8 iD i9 iE iA iF iB] 134da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i r2 = _mm_shuffle_epi32(r0, 0xB4); 135da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i r3 = _mm_shuffle_epi32(r1, 0xB4); 136da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // r2 = [i0 i4 i1 i5 i3 i7 i2 i6] 137da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // r3 = [iC i8 iD i9 iF iB iE iA] 138da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian 139da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t0 = _mm_add_epi16(r2, r3); 140da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t1 = _mm_sub_epi16(r2, r3); 141da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // t0 = [a0 a4 a1 a5 a3 a7 a2 a6] 142da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // t1 = [aC a8 aD a9 aF aB aE aA] 143da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian 144da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Stage 2: multiply by constants (which gets us into 32 bits). 145da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // The constants needed here are: 146da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // k__cospi_A = [p16 p16 p16 p16 p16 m16 p16 m16] 147da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // k__cospi_B = [p16 m16 p16 m16 p16 p16 p16 p16] 148da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // k__cospi_C = [p08 p24 p08 p24 p24 m08 p24 m08] 149da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // k__cospi_D = [p24 m08 p24 m08 p08 p24 p08 p24] 150da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u0 = _mm_madd_epi16(t0, k__cospi_A); 151da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u2 = _mm_madd_epi16(t0, k__cospi_B); 152da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u1 = _mm_madd_epi16(t1, k__cospi_C); 153da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u3 = _mm_madd_epi16(t1, k__cospi_D); 154da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Then add and right-shift to get back to 16-bit range 155da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); 156da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); 157da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); 158da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); 159da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); 160da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); 161da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); 162da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); 163da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // w0 = [b0 b1 b7 b6] 164da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // w1 = [b8 b9 bF bE] 165da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // w2 = [b4 b5 b3 b2] 166da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // w3 = [bC bD bB bA] 167da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i x0 = _mm_packs_epi32(w0, w1); 168da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i x1 = _mm_packs_epi32(w2, w3); 169da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 170da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian overflow = check_epi16_overflow_x2(&x0, &x1); 171da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 172da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct4x4_c(input, output, stride); 173da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 174da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 175da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 176da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // x0 = [b0 b1 b7 b6 b8 b9 bF bE] 177da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // x1 = [b4 b5 b3 b2 bC bD bB bA] 178da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in0 = _mm_shuffle_epi32(x0, 0xD8); 179da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in1 = _mm_shuffle_epi32(x1, 0x8D); 180da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // in0 = [b0 b1 b8 b9 b7 b6 bF bE] 181da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // in1 = [b3 b2 bB bA b4 b5 bC bD] 182da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 183da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 184da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // vertical DCTs finished. Now we do the horizontal DCTs. 185da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Stage 3: Add/subtract 186da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian 187da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t0 = ADD_EPI16(in0, in1); 188da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t1 = SUB_EPI16(in0, in1); 1897bc9febe8749e98a3812a0dc4380ceae75c29450Johann// t0 = [c0 c1 c8 c9 c4 c5 cC cD] 1907bc9febe8749e98a3812a0dc4380ceae75c29450Johann// t1 = [c3 c2 cB cA -c7 -c6 -cF -cE] 191da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 192da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian overflow = check_epi16_overflow_x2(&t0, &t1); 193da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 194da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct4x4_c(input, output, stride); 195da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 196da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 197da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 198da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian 199da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Stage 4: multiply by constants (which gets us into 32 bits). 200da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 201da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // The constants needed here are: 202da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // k__cospi_E = [p16 p16 p16 p16 p16 p16 p16 p16] 203da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // k__cospi_F = [p16 m16 p16 m16 p16 m16 p16 m16] 204da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // k__cospi_G = [p08 p24 p08 p24 m08 m24 m08 m24] 205da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // k__cospi_H = [p24 m08 p24 m08 m24 p08 m24 p08] 206da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u0 = _mm_madd_epi16(t0, k__cospi_E); 207da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u1 = _mm_madd_epi16(t0, k__cospi_F); 208da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u2 = _mm_madd_epi16(t1, k__cospi_G); 209da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u3 = _mm_madd_epi16(t1, k__cospi_H); 210da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Then add and right-shift to get back to 16-bit range 211da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // but this combines the final right-shift as well to save operations 212da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // This unusual rounding operations is to maintain bit-accurate 213da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // compatibility with the c version of this function which has two 214da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // rounding steps in a row. 215da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING2); 216da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING2); 217da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING2); 218da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING2); 219da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS2); 220da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS2); 221da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS2); 222da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS2); 223da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // w0 = [o0 o4 o8 oC] 224da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // w1 = [o2 o6 oA oE] 225da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // w2 = [o1 o5 o9 oD] 226da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // w3 = [o3 o7 oB oF] 227da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // remember the o's are numbered according to the correct output location 228da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i x0 = _mm_packs_epi32(w0, w1); 229da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i x1 = _mm_packs_epi32(w2, w3); 230da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 231da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian overflow = check_epi16_overflow_x2(&x0, &x1); 232da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 233da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct4x4_c(input, output, stride); 234da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 235da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 236da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 237da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 238da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // x0 = [o0 o4 o8 oC o2 o6 oA oE] 239da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // x1 = [o1 o5 o9 oD o3 o7 oB oF] 240da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i y0 = _mm_unpacklo_epi16(x0, x1); 241da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i y1 = _mm_unpackhi_epi16(x0, x1); 242da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // y0 = [o0 o1 o4 o5 o8 o9 oC oD] 243da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // y1 = [o2 o3 o6 o7 oA oB oE oF] 244da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in0 = _mm_unpacklo_epi32(y0, y1); 245da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // in0 = [o0 o1 o2 o3 o4 o5 o6 o7] 246da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in1 = _mm_unpackhi_epi32(y0, y1); 247da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // in1 = [o8 o9 oA oB oC oD oE oF] 248da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 249da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 250da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 251da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Post-condition (v + 1) >> 2 is now incorporated into previous 252da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // add and right-shift commands. Only 2 store instructions needed 253da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // because we are using the fact that 1/3 are stored just after 0/2. 254da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian storeu_output(&in0, output + 0 * 4); 255da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian storeu_output(&in1, output + 2 * 4); 256da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian} 257da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian 258da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanianvoid FDCT8x8_2D(const int16_t *input, tran_low_t *output, int stride) { 259da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian int pass; 260da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Constants 261da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // When we use them, in one case, they are all the same. In all others 262da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // it's a pair of them that we need to repeat four times. This is done 263da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // by constructing the 32 bit constant corresponding to that pair. 264df37111358d02836cb29bbcb9c6e4c95dff90a16Johann const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64); 265da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64); 266da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64); 267da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64); 268da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_p28_p04 = pair_set_epi16(cospi_28_64, cospi_4_64); 269da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_m04_p28 = pair_set_epi16(-cospi_4_64, cospi_28_64); 270da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_p12_p20 = pair_set_epi16(cospi_12_64, cospi_20_64); 271da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_m20_p12 = pair_set_epi16(-cospi_20_64, cospi_12_64); 272da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); 273da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 274da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian int overflow; 275da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif 276da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Load input 2777bc9febe8749e98a3812a0dc4380ceae75c29450Johann __m128i in0 = _mm_load_si128((const __m128i *)(input + 0 * stride)); 2787bc9febe8749e98a3812a0dc4380ceae75c29450Johann __m128i in1 = _mm_load_si128((const __m128i *)(input + 1 * stride)); 2797bc9febe8749e98a3812a0dc4380ceae75c29450Johann __m128i in2 = _mm_load_si128((const __m128i *)(input + 2 * stride)); 2807bc9febe8749e98a3812a0dc4380ceae75c29450Johann __m128i in3 = _mm_load_si128((const __m128i *)(input + 3 * stride)); 2817bc9febe8749e98a3812a0dc4380ceae75c29450Johann __m128i in4 = _mm_load_si128((const __m128i *)(input + 4 * stride)); 2827bc9febe8749e98a3812a0dc4380ceae75c29450Johann __m128i in5 = _mm_load_si128((const __m128i *)(input + 5 * stride)); 2837bc9febe8749e98a3812a0dc4380ceae75c29450Johann __m128i in6 = _mm_load_si128((const __m128i *)(input + 6 * stride)); 2847bc9febe8749e98a3812a0dc4380ceae75c29450Johann __m128i in7 = _mm_load_si128((const __m128i *)(input + 7 * stride)); 285da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Pre-condition input (shift by two) 286da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in0 = _mm_slli_epi16(in0, 2); 287da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in1 = _mm_slli_epi16(in1, 2); 288da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in2 = _mm_slli_epi16(in2, 2); 289da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in3 = _mm_slli_epi16(in3, 2); 290da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in4 = _mm_slli_epi16(in4, 2); 291da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in5 = _mm_slli_epi16(in5, 2); 292da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in6 = _mm_slli_epi16(in6, 2); 293da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in7 = _mm_slli_epi16(in7, 2); 294da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian 295da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // We do two passes, first the columns, then the rows. The results of the 296da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // first pass are transposed so that the same column code can be reused. The 297da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // results of the second pass are also transposed so that the rows (processed 298da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // as columns) are put back in row positions. 299da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian for (pass = 0; pass < 2; pass++) { 300da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // To store results of each pass before the transpose. 301da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian __m128i res0, res1, res2, res3, res4, res5, res6, res7; 302da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Add/subtract 303da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i q0 = ADD_EPI16(in0, in7); 304da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i q1 = ADD_EPI16(in1, in6); 305da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i q2 = ADD_EPI16(in2, in5); 306da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i q3 = ADD_EPI16(in3, in4); 307da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i q4 = SUB_EPI16(in3, in4); 308da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i q5 = SUB_EPI16(in2, in5); 309da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i q6 = SUB_EPI16(in1, in6); 310da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i q7 = SUB_EPI16(in0, in7); 311da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 312da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (pass == 1) { 3137bc9febe8749e98a3812a0dc4380ceae75c29450Johann overflow = 3147bc9febe8749e98a3812a0dc4380ceae75c29450Johann check_epi16_overflow_x8(&q0, &q1, &q2, &q3, &q4, &q5, &q6, &q7); 315da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 316da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct8x8_c(input, output, stride); 317da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 318da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 319da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 320da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 321da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Work on first four results 322da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 323da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Add/subtract 324da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i r0 = ADD_EPI16(q0, q3); 325da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i r1 = ADD_EPI16(q1, q2); 326da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i r2 = SUB_EPI16(q1, q2); 327da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i r3 = SUB_EPI16(q0, q3); 328da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 329da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian overflow = check_epi16_overflow_x4(&r0, &r1, &r2, &r3); 330da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 331da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct8x8_c(input, output, stride); 332da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 333da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 334da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 335da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Interleave to do the multiply by constants which gets us into 32bits 336da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 337da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t0 = _mm_unpacklo_epi16(r0, r1); 338da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t1 = _mm_unpackhi_epi16(r0, r1); 339da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t2 = _mm_unpacklo_epi16(r2, r3); 340da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t3 = _mm_unpackhi_epi16(r2, r3); 341da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p16_p16); 342da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p16_p16); 343da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u2 = _mm_madd_epi16(t0, k__cospi_p16_m16); 344da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u3 = _mm_madd_epi16(t1, k__cospi_p16_m16); 345da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p24_p08); 346da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u5 = _mm_madd_epi16(t3, k__cospi_p24_p08); 347da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m08_p24); 348da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u7 = _mm_madd_epi16(t3, k__cospi_m08_p24); 349da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // dct_const_round_shift 350da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); 351da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); 352da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); 353da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); 354da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING); 355da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING); 356da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING); 357da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING); 358da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); 359da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); 360da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); 361da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); 362da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS); 363da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w5 = _mm_srai_epi32(v5, DCT_CONST_BITS); 364da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS); 365da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w7 = _mm_srai_epi32(v7, DCT_CONST_BITS); 366da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Combine 367da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res0 = _mm_packs_epi32(w0, w1); 368da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res4 = _mm_packs_epi32(w2, w3); 369da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res2 = _mm_packs_epi32(w4, w5); 370da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res6 = _mm_packs_epi32(w6, w7); 371da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 372da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian overflow = check_epi16_overflow_x4(&res0, &res4, &res2, &res6); 373da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 374da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct8x8_c(input, output, stride); 375da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 376da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 377da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 378da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 379da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 380da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Work on next four results 381da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 382da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Interleave to do the multiply by constants which gets us into 32bits 383da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i d0 = _mm_unpacklo_epi16(q6, q5); 384da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i d1 = _mm_unpackhi_epi16(q6, q5); 385da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i e0 = _mm_madd_epi16(d0, k__cospi_p16_m16); 386da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i e1 = _mm_madd_epi16(d1, k__cospi_p16_m16); 387da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i e2 = _mm_madd_epi16(d0, k__cospi_p16_p16); 388da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i e3 = _mm_madd_epi16(d1, k__cospi_p16_p16); 389da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // dct_const_round_shift 390da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i f0 = _mm_add_epi32(e0, k__DCT_CONST_ROUNDING); 391da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i f1 = _mm_add_epi32(e1, k__DCT_CONST_ROUNDING); 392da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i f2 = _mm_add_epi32(e2, k__DCT_CONST_ROUNDING); 393da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i f3 = _mm_add_epi32(e3, k__DCT_CONST_ROUNDING); 394da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i s0 = _mm_srai_epi32(f0, DCT_CONST_BITS); 395da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i s1 = _mm_srai_epi32(f1, DCT_CONST_BITS); 396da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i s2 = _mm_srai_epi32(f2, DCT_CONST_BITS); 397da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i s3 = _mm_srai_epi32(f3, DCT_CONST_BITS); 398da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Combine 399da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i r0 = _mm_packs_epi32(s0, s1); 400da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i r1 = _mm_packs_epi32(s2, s3); 401da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 402da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian overflow = check_epi16_overflow_x2(&r0, &r1); 403da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 404da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct8x8_c(input, output, stride); 405da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 406da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 407da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 408da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 409da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Add/subtract 410da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i x0 = ADD_EPI16(q4, r0); 411da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i x1 = SUB_EPI16(q4, r0); 412da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i x2 = SUB_EPI16(q7, r1); 413da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i x3 = ADD_EPI16(q7, r1); 414da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 415da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian overflow = check_epi16_overflow_x4(&x0, &x1, &x2, &x3); 416da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 417da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct8x8_c(input, output, stride); 418da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 419da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 420da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 421da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Interleave to do the multiply by constants which gets us into 32bits 422da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 423da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t0 = _mm_unpacklo_epi16(x0, x3); 424da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t1 = _mm_unpackhi_epi16(x0, x3); 425da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t2 = _mm_unpacklo_epi16(x1, x2); 426da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t3 = _mm_unpackhi_epi16(x1, x2); 427da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p28_p04); 428da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p28_p04); 429da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u2 = _mm_madd_epi16(t0, k__cospi_m04_p28); 430da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u3 = _mm_madd_epi16(t1, k__cospi_m04_p28); 431da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p12_p20); 432da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u5 = _mm_madd_epi16(t3, k__cospi_p12_p20); 433da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m20_p12); 434da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i u7 = _mm_madd_epi16(t3, k__cospi_m20_p12); 435da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // dct_const_round_shift 436da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING); 437da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING); 438da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING); 439da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING); 440da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING); 441da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING); 442da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING); 443da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING); 444da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS); 445da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS); 446da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS); 447da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS); 448da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS); 449da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w5 = _mm_srai_epi32(v5, DCT_CONST_BITS); 450da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS); 451da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i w7 = _mm_srai_epi32(v7, DCT_CONST_BITS); 452da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Combine 453da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res1 = _mm_packs_epi32(w0, w1); 454da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res7 = _mm_packs_epi32(w2, w3); 455da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res5 = _mm_packs_epi32(w4, w5); 456da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res3 = _mm_packs_epi32(w6, w7); 457da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 458da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian overflow = check_epi16_overflow_x4(&res1, &res7, &res5, &res3); 459da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 460da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct8x8_c(input, output, stride); 461da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 462da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 463da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 464da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 465da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 466da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 467da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Transpose the 8x8. 468da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 469da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 00 01 02 03 04 05 06 07 470da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 10 11 12 13 14 15 16 17 471da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 20 21 22 23 24 25 26 27 472da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 30 31 32 33 34 35 36 37 473da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 40 41 42 43 44 45 46 47 474da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 50 51 52 53 54 55 56 57 475da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 60 61 62 63 64 65 66 67 476da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 70 71 72 73 74 75 76 77 477da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i tr0_0 = _mm_unpacklo_epi16(res0, res1); 478da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i tr0_1 = _mm_unpacklo_epi16(res2, res3); 479da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i tr0_2 = _mm_unpackhi_epi16(res0, res1); 480da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i tr0_3 = _mm_unpackhi_epi16(res2, res3); 481da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i tr0_4 = _mm_unpacklo_epi16(res4, res5); 482da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i tr0_5 = _mm_unpacklo_epi16(res6, res7); 483da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i tr0_6 = _mm_unpackhi_epi16(res4, res5); 484da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i tr0_7 = _mm_unpackhi_epi16(res6, res7); 485da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 00 10 01 11 02 12 03 13 486da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 20 30 21 31 22 32 23 33 487da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 04 14 05 15 06 16 07 17 488da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 24 34 25 35 26 36 27 37 489da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 40 50 41 51 42 52 43 53 490da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 60 70 61 71 62 72 63 73 491da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 54 54 55 55 56 56 57 57 492da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 64 74 65 75 66 76 67 77 493da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i tr1_0 = _mm_unpacklo_epi32(tr0_0, tr0_1); 494da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i tr1_1 = _mm_unpacklo_epi32(tr0_2, tr0_3); 495da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i tr1_2 = _mm_unpackhi_epi32(tr0_0, tr0_1); 496da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i tr1_3 = _mm_unpackhi_epi32(tr0_2, tr0_3); 497da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i tr1_4 = _mm_unpacklo_epi32(tr0_4, tr0_5); 498da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i tr1_5 = _mm_unpacklo_epi32(tr0_6, tr0_7); 499da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i tr1_6 = _mm_unpackhi_epi32(tr0_4, tr0_5); 500da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i tr1_7 = _mm_unpackhi_epi32(tr0_6, tr0_7); 501da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 00 10 20 30 01 11 21 31 502da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 40 50 60 70 41 51 61 71 503da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 02 12 22 32 03 13 23 33 504da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 42 52 62 72 43 53 63 73 505da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 04 14 24 34 05 15 21 36 506da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 44 54 64 74 45 55 61 76 507da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 06 16 26 36 07 17 27 37 508da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 46 56 66 76 47 57 67 77 509da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in0 = _mm_unpacklo_epi64(tr1_0, tr1_4); 510da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in1 = _mm_unpackhi_epi64(tr1_0, tr1_4); 511da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in2 = _mm_unpacklo_epi64(tr1_2, tr1_6); 512da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in3 = _mm_unpackhi_epi64(tr1_2, tr1_6); 513da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in4 = _mm_unpacklo_epi64(tr1_1, tr1_5); 514da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in5 = _mm_unpackhi_epi64(tr1_1, tr1_5); 515da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in6 = _mm_unpacklo_epi64(tr1_3, tr1_7); 516da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in7 = _mm_unpackhi_epi64(tr1_3, tr1_7); 517da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 00 10 20 30 40 50 60 70 518da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 01 11 21 31 41 51 61 71 519da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 02 12 22 32 42 52 62 72 520da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 03 13 23 33 43 53 63 73 521da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 04 14 24 34 44 54 64 74 522da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 05 15 25 35 45 55 65 75 523da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 06 16 26 36 46 56 66 76 524da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // 07 17 27 37 47 57 67 77 525da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 526da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 527da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Post-condition output and store it 528da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 529da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Post-condition (division by two) 530da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // division of two 16 bits signed numbers using shifts 531da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // n / 2 = (n - (n >> 15)) >> 1 532da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i sign_in0 = _mm_srai_epi16(in0, 15); 533da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i sign_in1 = _mm_srai_epi16(in1, 15); 534da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i sign_in2 = _mm_srai_epi16(in2, 15); 535da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i sign_in3 = _mm_srai_epi16(in3, 15); 536da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i sign_in4 = _mm_srai_epi16(in4, 15); 537da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i sign_in5 = _mm_srai_epi16(in5, 15); 538da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i sign_in6 = _mm_srai_epi16(in6, 15); 539da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i sign_in7 = _mm_srai_epi16(in7, 15); 540da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in0 = _mm_sub_epi16(in0, sign_in0); 541da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in1 = _mm_sub_epi16(in1, sign_in1); 542da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in2 = _mm_sub_epi16(in2, sign_in2); 543da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in3 = _mm_sub_epi16(in3, sign_in3); 544da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in4 = _mm_sub_epi16(in4, sign_in4); 545da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in5 = _mm_sub_epi16(in5, sign_in5); 546da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in6 = _mm_sub_epi16(in6, sign_in6); 547da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in7 = _mm_sub_epi16(in7, sign_in7); 548da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in0 = _mm_srai_epi16(in0, 1); 549da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in1 = _mm_srai_epi16(in1, 1); 550da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in2 = _mm_srai_epi16(in2, 1); 551da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in3 = _mm_srai_epi16(in3, 1); 552da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in4 = _mm_srai_epi16(in4, 1); 553da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in5 = _mm_srai_epi16(in5, 1); 554da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in6 = _mm_srai_epi16(in6, 1); 555da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in7 = _mm_srai_epi16(in7, 1); 556da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // store results 557da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian store_output(&in0, (output + 0 * 8)); 558da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian store_output(&in1, (output + 1 * 8)); 559da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian store_output(&in2, (output + 2 * 8)); 560da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian store_output(&in3, (output + 3 * 8)); 561da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian store_output(&in4, (output + 4 * 8)); 562da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian store_output(&in5, (output + 5 * 8)); 563da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian store_output(&in6, (output + 6 * 8)); 564da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian store_output(&in7, (output + 7 * 8)); 565da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 566da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian} 567da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian 568da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanianvoid FDCT16x16_2D(const int16_t *input, tran_low_t *output, int stride) { 569da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // The 2D transform is done with two passes which are actually pretty 570da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // similar. In the first one, we transform the columns and transpose 571da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // the results. In the second one, we transform the rows. To achieve that, 572da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // as the first pass results are transposed, we transpose the columns (that 573da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // is the transposed rows) and transpose the results (so that it goes back 574da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // in normal/row positions). 575da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian int pass; 576da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // We need an intermediate buffer between passes. 577da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian DECLARE_ALIGNED(16, int16_t, intermediate[256]); 578da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const int16_t *in = input; 579da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian int16_t *out0 = intermediate; 580da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian tran_low_t *out1 = output; 581da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Constants 582da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // When we use them, in one case, they are all the same. In all others 583da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // it's a pair of them that we need to repeat four times. This is done 584da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // by constructing the 32 bit constant corresponding to that pair. 585df37111358d02836cb29bbcb9c6e4c95dff90a16Johann const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64); 586da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64); 587da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64); 588da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_p08_m24 = pair_set_epi16(cospi_8_64, -cospi_24_64); 589da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64); 590da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_p28_p04 = pair_set_epi16(cospi_28_64, cospi_4_64); 591da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_m04_p28 = pair_set_epi16(-cospi_4_64, cospi_28_64); 592da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_p12_p20 = pair_set_epi16(cospi_12_64, cospi_20_64); 593da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_m20_p12 = pair_set_epi16(-cospi_20_64, cospi_12_64); 594da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_p30_p02 = pair_set_epi16(cospi_30_64, cospi_2_64); 595da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_p14_p18 = pair_set_epi16(cospi_14_64, cospi_18_64); 596da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_m02_p30 = pair_set_epi16(-cospi_2_64, cospi_30_64); 597da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_m18_p14 = pair_set_epi16(-cospi_18_64, cospi_14_64); 598da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_p22_p10 = pair_set_epi16(cospi_22_64, cospi_10_64); 599da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_p06_p26 = pair_set_epi16(cospi_6_64, cospi_26_64); 600da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_m10_p22 = pair_set_epi16(-cospi_10_64, cospi_22_64); 601da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__cospi_m26_p06 = pair_set_epi16(-cospi_26_64, cospi_6_64); 602da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING); 603da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i kOne = _mm_set1_epi16(1); 604da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Do the two transform/transpose passes 605da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian for (pass = 0; pass < 2; ++pass) { 606da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // We process eight columns (transposed rows in second pass) at a time. 607da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian int column_start; 608da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 609da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian int overflow; 610da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif 611da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian for (column_start = 0; column_start < 16; column_start += 8) { 612da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian __m128i in00, in01, in02, in03, in04, in05, in06, in07; 613da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian __m128i in08, in09, in10, in11, in12, in13, in14, in15; 614da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian __m128i input0, input1, input2, input3, input4, input5, input6, input7; 615da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian __m128i step1_0, step1_1, step1_2, step1_3; 616da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian __m128i step1_4, step1_5, step1_6, step1_7; 617da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian __m128i step2_1, step2_2, step2_3, step2_4, step2_5, step2_6; 618da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian __m128i step3_0, step3_1, step3_2, step3_3; 619da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian __m128i step3_4, step3_5, step3_6, step3_7; 620da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian __m128i res00, res01, res02, res03, res04, res05, res06, res07; 621da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian __m128i res08, res09, res10, res11, res12, res13, res14, res15; 622da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Load and pre-condition input. 623da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (0 == pass) { 6247bc9febe8749e98a3812a0dc4380ceae75c29450Johann in00 = _mm_load_si128((const __m128i *)(in + 0 * stride)); 6257bc9febe8749e98a3812a0dc4380ceae75c29450Johann in01 = _mm_load_si128((const __m128i *)(in + 1 * stride)); 6267bc9febe8749e98a3812a0dc4380ceae75c29450Johann in02 = _mm_load_si128((const __m128i *)(in + 2 * stride)); 6277bc9febe8749e98a3812a0dc4380ceae75c29450Johann in03 = _mm_load_si128((const __m128i *)(in + 3 * stride)); 6287bc9febe8749e98a3812a0dc4380ceae75c29450Johann in04 = _mm_load_si128((const __m128i *)(in + 4 * stride)); 6297bc9febe8749e98a3812a0dc4380ceae75c29450Johann in05 = _mm_load_si128((const __m128i *)(in + 5 * stride)); 6307bc9febe8749e98a3812a0dc4380ceae75c29450Johann in06 = _mm_load_si128((const __m128i *)(in + 6 * stride)); 6317bc9febe8749e98a3812a0dc4380ceae75c29450Johann in07 = _mm_load_si128((const __m128i *)(in + 7 * stride)); 6327bc9febe8749e98a3812a0dc4380ceae75c29450Johann in08 = _mm_load_si128((const __m128i *)(in + 8 * stride)); 6337bc9febe8749e98a3812a0dc4380ceae75c29450Johann in09 = _mm_load_si128((const __m128i *)(in + 9 * stride)); 6347bc9febe8749e98a3812a0dc4380ceae75c29450Johann in10 = _mm_load_si128((const __m128i *)(in + 10 * stride)); 6357bc9febe8749e98a3812a0dc4380ceae75c29450Johann in11 = _mm_load_si128((const __m128i *)(in + 11 * stride)); 6367bc9febe8749e98a3812a0dc4380ceae75c29450Johann in12 = _mm_load_si128((const __m128i *)(in + 12 * stride)); 6377bc9febe8749e98a3812a0dc4380ceae75c29450Johann in13 = _mm_load_si128((const __m128i *)(in + 13 * stride)); 6387bc9febe8749e98a3812a0dc4380ceae75c29450Johann in14 = _mm_load_si128((const __m128i *)(in + 14 * stride)); 6397bc9febe8749e98a3812a0dc4380ceae75c29450Johann in15 = _mm_load_si128((const __m128i *)(in + 15 * stride)); 640da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // x = x << 2 641da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in00 = _mm_slli_epi16(in00, 2); 642da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in01 = _mm_slli_epi16(in01, 2); 643da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in02 = _mm_slli_epi16(in02, 2); 644da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in03 = _mm_slli_epi16(in03, 2); 645da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in04 = _mm_slli_epi16(in04, 2); 646da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in05 = _mm_slli_epi16(in05, 2); 647da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in06 = _mm_slli_epi16(in06, 2); 648da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in07 = _mm_slli_epi16(in07, 2); 649da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in08 = _mm_slli_epi16(in08, 2); 650da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in09 = _mm_slli_epi16(in09, 2); 651da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in10 = _mm_slli_epi16(in10, 2); 652da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in11 = _mm_slli_epi16(in11, 2); 653da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in12 = _mm_slli_epi16(in12, 2); 654da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in13 = _mm_slli_epi16(in13, 2); 655da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in14 = _mm_slli_epi16(in14, 2); 656da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in15 = _mm_slli_epi16(in15, 2); 657da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } else { 6587bc9febe8749e98a3812a0dc4380ceae75c29450Johann in00 = _mm_load_si128((const __m128i *)(in + 0 * 16)); 6597bc9febe8749e98a3812a0dc4380ceae75c29450Johann in01 = _mm_load_si128((const __m128i *)(in + 1 * 16)); 6607bc9febe8749e98a3812a0dc4380ceae75c29450Johann in02 = _mm_load_si128((const __m128i *)(in + 2 * 16)); 6617bc9febe8749e98a3812a0dc4380ceae75c29450Johann in03 = _mm_load_si128((const __m128i *)(in + 3 * 16)); 6627bc9febe8749e98a3812a0dc4380ceae75c29450Johann in04 = _mm_load_si128((const __m128i *)(in + 4 * 16)); 6637bc9febe8749e98a3812a0dc4380ceae75c29450Johann in05 = _mm_load_si128((const __m128i *)(in + 5 * 16)); 6647bc9febe8749e98a3812a0dc4380ceae75c29450Johann in06 = _mm_load_si128((const __m128i *)(in + 6 * 16)); 6657bc9febe8749e98a3812a0dc4380ceae75c29450Johann in07 = _mm_load_si128((const __m128i *)(in + 7 * 16)); 6667bc9febe8749e98a3812a0dc4380ceae75c29450Johann in08 = _mm_load_si128((const __m128i *)(in + 8 * 16)); 6677bc9febe8749e98a3812a0dc4380ceae75c29450Johann in09 = _mm_load_si128((const __m128i *)(in + 9 * 16)); 6687bc9febe8749e98a3812a0dc4380ceae75c29450Johann in10 = _mm_load_si128((const __m128i *)(in + 10 * 16)); 6697bc9febe8749e98a3812a0dc4380ceae75c29450Johann in11 = _mm_load_si128((const __m128i *)(in + 11 * 16)); 6707bc9febe8749e98a3812a0dc4380ceae75c29450Johann in12 = _mm_load_si128((const __m128i *)(in + 12 * 16)); 6717bc9febe8749e98a3812a0dc4380ceae75c29450Johann in13 = _mm_load_si128((const __m128i *)(in + 13 * 16)); 6727bc9febe8749e98a3812a0dc4380ceae75c29450Johann in14 = _mm_load_si128((const __m128i *)(in + 14 * 16)); 6737bc9febe8749e98a3812a0dc4380ceae75c29450Johann in15 = _mm_load_si128((const __m128i *)(in + 15 * 16)); 674da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // x = (x + 1) >> 2 675da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in00 = _mm_add_epi16(in00, kOne); 676da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in01 = _mm_add_epi16(in01, kOne); 677da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in02 = _mm_add_epi16(in02, kOne); 678da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in03 = _mm_add_epi16(in03, kOne); 679da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in04 = _mm_add_epi16(in04, kOne); 680da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in05 = _mm_add_epi16(in05, kOne); 681da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in06 = _mm_add_epi16(in06, kOne); 682da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in07 = _mm_add_epi16(in07, kOne); 683da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in08 = _mm_add_epi16(in08, kOne); 684da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in09 = _mm_add_epi16(in09, kOne); 685da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in10 = _mm_add_epi16(in10, kOne); 686da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in11 = _mm_add_epi16(in11, kOne); 687da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in12 = _mm_add_epi16(in12, kOne); 688da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in13 = _mm_add_epi16(in13, kOne); 689da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in14 = _mm_add_epi16(in14, kOne); 690da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in15 = _mm_add_epi16(in15, kOne); 691da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in00 = _mm_srai_epi16(in00, 2); 692da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in01 = _mm_srai_epi16(in01, 2); 693da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in02 = _mm_srai_epi16(in02, 2); 694da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in03 = _mm_srai_epi16(in03, 2); 695da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in04 = _mm_srai_epi16(in04, 2); 696da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in05 = _mm_srai_epi16(in05, 2); 697da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in06 = _mm_srai_epi16(in06, 2); 698da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in07 = _mm_srai_epi16(in07, 2); 699da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in08 = _mm_srai_epi16(in08, 2); 700da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in09 = _mm_srai_epi16(in09, 2); 701da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in10 = _mm_srai_epi16(in10, 2); 702da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in11 = _mm_srai_epi16(in11, 2); 703da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in12 = _mm_srai_epi16(in12, 2); 704da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in13 = _mm_srai_epi16(in13, 2); 705da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in14 = _mm_srai_epi16(in14, 2); 706da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in15 = _mm_srai_epi16(in15, 2); 707da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 708da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in += 8; 709da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Calculate input for the first 8 results. 710da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 711da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian input0 = ADD_EPI16(in00, in15); 712da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian input1 = ADD_EPI16(in01, in14); 713da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian input2 = ADD_EPI16(in02, in13); 714da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian input3 = ADD_EPI16(in03, in12); 715da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian input4 = ADD_EPI16(in04, in11); 716da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian input5 = ADD_EPI16(in05, in10); 717da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian input6 = ADD_EPI16(in06, in09); 718da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian input7 = ADD_EPI16(in07, in08); 719da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 720da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian overflow = check_epi16_overflow_x8(&input0, &input1, &input2, &input3, 721da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &input4, &input5, &input6, &input7); 722da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 723da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct16x16_c(input, output, stride); 724da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 725da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 726da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 727da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 728da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Calculate input for the next 8 results. 729da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 730da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step1_0 = SUB_EPI16(in07, in08); 731da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step1_1 = SUB_EPI16(in06, in09); 732da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step1_2 = SUB_EPI16(in05, in10); 733da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step1_3 = SUB_EPI16(in04, in11); 734da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step1_4 = SUB_EPI16(in03, in12); 735da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step1_5 = SUB_EPI16(in02, in13); 736da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step1_6 = SUB_EPI16(in01, in14); 737da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step1_7 = SUB_EPI16(in00, in15); 738da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 7397bc9febe8749e98a3812a0dc4380ceae75c29450Johann overflow = 7407bc9febe8749e98a3812a0dc4380ceae75c29450Johann check_epi16_overflow_x8(&step1_0, &step1_1, &step1_2, &step1_3, 7417bc9febe8749e98a3812a0dc4380ceae75c29450Johann &step1_4, &step1_5, &step1_6, &step1_7); 742da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 743da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct16x16_c(input, output, stride); 744da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 745da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 746da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 747da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 748da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Work on the first eight values; fdct8(input, even_results); 749da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 750da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Add/subtract 751da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i q0 = ADD_EPI16(input0, input7); 752da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i q1 = ADD_EPI16(input1, input6); 753da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i q2 = ADD_EPI16(input2, input5); 754da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i q3 = ADD_EPI16(input3, input4); 755da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i q4 = SUB_EPI16(input3, input4); 756da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i q5 = SUB_EPI16(input2, input5); 757da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i q6 = SUB_EPI16(input1, input6); 758da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i q7 = SUB_EPI16(input0, input7); 759da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 7607bc9febe8749e98a3812a0dc4380ceae75c29450Johann overflow = 7617bc9febe8749e98a3812a0dc4380ceae75c29450Johann check_epi16_overflow_x8(&q0, &q1, &q2, &q3, &q4, &q5, &q6, &q7); 762da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 763da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct16x16_c(input, output, stride); 764da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 765da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 766da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 767da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Work on first four results 768da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 769da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Add/subtract 770da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i r0 = ADD_EPI16(q0, q3); 771da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i r1 = ADD_EPI16(q1, q2); 772da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i r2 = SUB_EPI16(q1, q2); 773da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i r3 = SUB_EPI16(q0, q3); 774da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 775da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian overflow = check_epi16_overflow_x4(&r0, &r1, &r2, &r3); 776da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 777da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct16x16_c(input, output, stride); 778da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 779da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 780da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 781da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Interleave to do the multiply by constants which gets us 782da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // into 32 bits. 783da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 784da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t0 = _mm_unpacklo_epi16(r0, r1); 785da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t1 = _mm_unpackhi_epi16(r0, r1); 786da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t2 = _mm_unpacklo_epi16(r2, r3); 787da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t3 = _mm_unpackhi_epi16(r2, r3); 788da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res00 = mult_round_shift(&t0, &t1, &k__cospi_p16_p16, 789da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 790da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res08 = mult_round_shift(&t0, &t1, &k__cospi_p16_m16, 791da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 792da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res04 = mult_round_shift(&t2, &t3, &k__cospi_p24_p08, 793da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 794da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res12 = mult_round_shift(&t2, &t3, &k__cospi_m08_p24, 795da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 796da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 797da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian overflow = check_epi16_overflow_x4(&res00, &res08, &res04, &res12); 798da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 799da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct16x16_c(input, output, stride); 800da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 801da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 802da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 803da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 804da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 805da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Work on next four results 806da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 807da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Interleave to do the multiply by constants which gets us 808da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // into 32 bits. 809da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i d0 = _mm_unpacklo_epi16(q6, q5); 810da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i d1 = _mm_unpackhi_epi16(q6, q5); 8117bc9febe8749e98a3812a0dc4380ceae75c29450Johann const __m128i r0 = 8127bc9febe8749e98a3812a0dc4380ceae75c29450Johann mult_round_shift(&d0, &d1, &k__cospi_p16_m16, 8137bc9febe8749e98a3812a0dc4380ceae75c29450Johann &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 8147bc9febe8749e98a3812a0dc4380ceae75c29450Johann const __m128i r1 = 8157bc9febe8749e98a3812a0dc4380ceae75c29450Johann mult_round_shift(&d0, &d1, &k__cospi_p16_p16, 8167bc9febe8749e98a3812a0dc4380ceae75c29450Johann &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 817da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 818da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian overflow = check_epi16_overflow_x2(&r0, &r1); 819da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 820da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct16x16_c(input, output, stride); 821da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 822da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 823da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 824da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 825da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Add/subtract 826da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i x0 = ADD_EPI16(q4, r0); 827da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i x1 = SUB_EPI16(q4, r0); 828da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i x2 = SUB_EPI16(q7, r1); 829da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i x3 = ADD_EPI16(q7, r1); 830da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 831da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian overflow = check_epi16_overflow_x4(&x0, &x1, &x2, &x3); 832da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 833da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct16x16_c(input, output, stride); 834da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 835da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 836da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 837da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Interleave to do the multiply by constants which gets us 838da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // into 32 bits. 839da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 840da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t0 = _mm_unpacklo_epi16(x0, x3); 841da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t1 = _mm_unpackhi_epi16(x0, x3); 842da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t2 = _mm_unpacklo_epi16(x1, x2); 843da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t3 = _mm_unpackhi_epi16(x1, x2); 844da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res02 = mult_round_shift(&t0, &t1, &k__cospi_p28_p04, 845da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 846da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res14 = mult_round_shift(&t0, &t1, &k__cospi_m04_p28, 847da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 848da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res10 = mult_round_shift(&t2, &t3, &k__cospi_p12_p20, 849da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 850da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res06 = mult_round_shift(&t2, &t3, &k__cospi_m20_p12, 851da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 852da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 8537bc9febe8749e98a3812a0dc4380ceae75c29450Johann overflow = 8547bc9febe8749e98a3812a0dc4380ceae75c29450Johann check_epi16_overflow_x4(&res02, &res14, &res10, &res06); 855da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 856da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct16x16_c(input, output, stride); 857da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 858da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 859da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 860da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 861da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 862da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 863da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 864da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Work on the next eight values; step1 -> odd_results 865da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 866da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // step 2 867da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 868da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t0 = _mm_unpacklo_epi16(step1_5, step1_2); 869da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t1 = _mm_unpackhi_epi16(step1_5, step1_2); 870da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t2 = _mm_unpacklo_epi16(step1_4, step1_3); 871da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t3 = _mm_unpackhi_epi16(step1_4, step1_3); 872da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step2_2 = mult_round_shift(&t0, &t1, &k__cospi_p16_m16, 873da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 874da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step2_3 = mult_round_shift(&t2, &t3, &k__cospi_p16_m16, 875da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 876da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step2_5 = mult_round_shift(&t0, &t1, &k__cospi_p16_p16, 877da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 878da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step2_4 = mult_round_shift(&t2, &t3, &k__cospi_p16_p16, 879da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 880da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 8817bc9febe8749e98a3812a0dc4380ceae75c29450Johann overflow = 8827bc9febe8749e98a3812a0dc4380ceae75c29450Johann check_epi16_overflow_x4(&step2_2, &step2_3, &step2_5, &step2_4); 883da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 884da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct16x16_c(input, output, stride); 885da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 886da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 887da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 888da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 889da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // step 3 890da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 891da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step3_0 = ADD_EPI16(step1_0, step2_3); 892da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step3_1 = ADD_EPI16(step1_1, step2_2); 893da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step3_2 = SUB_EPI16(step1_1, step2_2); 894da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step3_3 = SUB_EPI16(step1_0, step2_3); 895da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step3_4 = SUB_EPI16(step1_7, step2_4); 896da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step3_5 = SUB_EPI16(step1_6, step2_5); 897da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step3_6 = ADD_EPI16(step1_6, step2_5); 898da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step3_7 = ADD_EPI16(step1_7, step2_4); 899da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 9007bc9febe8749e98a3812a0dc4380ceae75c29450Johann overflow = 9017bc9febe8749e98a3812a0dc4380ceae75c29450Johann check_epi16_overflow_x8(&step3_0, &step3_1, &step3_2, &step3_3, 9027bc9febe8749e98a3812a0dc4380ceae75c29450Johann &step3_4, &step3_5, &step3_6, &step3_7); 903da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 904da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct16x16_c(input, output, stride); 905da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 906da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 907da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 908da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 909da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // step 4 910da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 911da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t0 = _mm_unpacklo_epi16(step3_1, step3_6); 912da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t1 = _mm_unpackhi_epi16(step3_1, step3_6); 913da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t2 = _mm_unpacklo_epi16(step3_2, step3_5); 914da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t3 = _mm_unpackhi_epi16(step3_2, step3_5); 915da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step2_1 = mult_round_shift(&t0, &t1, &k__cospi_m08_p24, 916da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 917da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step2_2 = mult_round_shift(&t2, &t3, &k__cospi_p24_p08, 918da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 919da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step2_6 = mult_round_shift(&t0, &t1, &k__cospi_p24_p08, 920da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 921da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step2_5 = mult_round_shift(&t2, &t3, &k__cospi_p08_m24, 922da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 923da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 9247bc9febe8749e98a3812a0dc4380ceae75c29450Johann overflow = 9257bc9febe8749e98a3812a0dc4380ceae75c29450Johann check_epi16_overflow_x4(&step2_1, &step2_2, &step2_6, &step2_5); 926da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 927da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct16x16_c(input, output, stride); 928da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 929da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 930da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 931da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 932da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // step 5 933da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 934da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step1_0 = ADD_EPI16(step3_0, step2_1); 935da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step1_1 = SUB_EPI16(step3_0, step2_1); 936da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step1_2 = ADD_EPI16(step3_3, step2_2); 937da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step1_3 = SUB_EPI16(step3_3, step2_2); 938da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step1_4 = SUB_EPI16(step3_4, step2_5); 939da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step1_5 = ADD_EPI16(step3_4, step2_5); 940da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step1_6 = SUB_EPI16(step3_7, step2_6); 941da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian step1_7 = ADD_EPI16(step3_7, step2_6); 942da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 9437bc9febe8749e98a3812a0dc4380ceae75c29450Johann overflow = 9447bc9febe8749e98a3812a0dc4380ceae75c29450Johann check_epi16_overflow_x8(&step1_0, &step1_1, &step1_2, &step1_3, 9457bc9febe8749e98a3812a0dc4380ceae75c29450Johann &step1_4, &step1_5, &step1_6, &step1_7); 946da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 947da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct16x16_c(input, output, stride); 948da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 949da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 950da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 951da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 952da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // step 6 953da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 954da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t0 = _mm_unpacklo_epi16(step1_0, step1_7); 955da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t1 = _mm_unpackhi_epi16(step1_0, step1_7); 956da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t2 = _mm_unpacklo_epi16(step1_1, step1_6); 957da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t3 = _mm_unpackhi_epi16(step1_1, step1_6); 958da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res01 = mult_round_shift(&t0, &t1, &k__cospi_p30_p02, 959da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 960da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res09 = mult_round_shift(&t2, &t3, &k__cospi_p14_p18, 961da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 962da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res15 = mult_round_shift(&t0, &t1, &k__cospi_m02_p30, 963da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 964da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res07 = mult_round_shift(&t2, &t3, &k__cospi_m18_p14, 965da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 966da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 967da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian overflow = check_epi16_overflow_x4(&res01, &res09, &res15, &res07); 968da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 969da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct16x16_c(input, output, stride); 970da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 971da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 972da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 973da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 974da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian { 975da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t0 = _mm_unpacklo_epi16(step1_2, step1_5); 976da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t1 = _mm_unpackhi_epi16(step1_2, step1_5); 977da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t2 = _mm_unpacklo_epi16(step1_3, step1_4); 978da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian const __m128i t3 = _mm_unpackhi_epi16(step1_3, step1_4); 979da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res05 = mult_round_shift(&t0, &t1, &k__cospi_p22_p10, 980da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 981da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res13 = mult_round_shift(&t2, &t3, &k__cospi_p06_p26, 982da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 983da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res11 = mult_round_shift(&t0, &t1, &k__cospi_m10_p22, 984da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 985da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian res03 = mult_round_shift(&t2, &t3, &k__cospi_m26_p06, 986da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian &k__DCT_CONST_ROUNDING, DCT_CONST_BITS); 987da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#if DCT_HIGH_BIT_DEPTH 988da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian overflow = check_epi16_overflow_x4(&res05, &res13, &res11, &res03); 989da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (overflow) { 990da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian vpx_highbd_fdct16x16_c(input, output, stride); 991da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian return; 992da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 993da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#endif // DCT_HIGH_BIT_DEPTH 994da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 995da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 996da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Transpose the results, do it as two 8x8 transposes. 9977bc9febe8749e98a3812a0dc4380ceae75c29450Johann transpose_and_output8x8(&res00, &res01, &res02, &res03, &res04, &res05, 9987bc9febe8749e98a3812a0dc4380ceae75c29450Johann &res06, &res07, pass, out0, out1); 9997bc9febe8749e98a3812a0dc4380ceae75c29450Johann transpose_and_output8x8(&res08, &res09, &res10, &res11, &res12, &res13, 10007bc9febe8749e98a3812a0dc4380ceae75c29450Johann &res14, &res15, pass, out0 + 8, out1 + 8); 1001da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian if (pass == 0) { 10027bc9febe8749e98a3812a0dc4380ceae75c29450Johann out0 += 8 * 16; 1003da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } else { 10047bc9febe8749e98a3812a0dc4380ceae75c29450Johann out1 += 8 * 16; 1005da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 1006da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 1007da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian // Setup in/out for next pass. 1008da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian in = intermediate; 1009da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian } 1010da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian} 1011da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian 1012da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#undef ADD_EPI16 1013da49e34c1fb5e99681f4ad99c21d9cfd83eddb96Vignesh Venkatasubramanian#undef SUB_EPI16 1014