ref: ac3996a6d1bf1f3696cffbf1102528643391ec19
dir: /vpx_dsp/x86/inv_txfm_ssse3.c/
/*
* Copyright (c) 2017 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <tmmintrin.h>
#include "./vpx_dsp_rtcd.h"
#include "vpx_dsp/x86/inv_txfm_sse2.h"
#include "vpx_dsp/x86/txfm_common_sse2.h"
void vpx_idct8x8_64_add_ssse3(const tran_low_t *input, uint8_t *dest,
int stride) {
const __m128i zero = _mm_setzero_si128();
const __m128i rounding = _mm_set1_epi32(DCT_CONST_ROUNDING);
const __m128i final_rounding = _mm_set1_epi16(1 << 4);
const __m128i stg1_0 = pair_set_epi16(cospi_28_64, -cospi_4_64);
const __m128i stg1_1 = pair_set_epi16(cospi_4_64, cospi_28_64);
const __m128i stg1_2 = pair_set_epi16(-cospi_20_64, cospi_12_64);
const __m128i stg1_3 = pair_set_epi16(cospi_12_64, cospi_20_64);
const __m128i stg2_0 = pair_set_epi16(2 * cospi_16_64, 2 * cospi_16_64);
const __m128i stg2_2 = pair_set_epi16(cospi_24_64, -cospi_8_64);
const __m128i stg2_3 = pair_set_epi16(cospi_8_64, cospi_24_64);
__m128i in0, in1, in2, in3, in4, in5, in6, in7;
__m128i stp1_0, stp1_1, stp1_2, stp1_3, stp1_4, stp1_5, stp1_6, stp1_7;
__m128i stp2_0, stp2_1, stp2_2, stp2_3, stp2_4, stp2_5, stp2_6, stp2_7;
__m128i tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
int i;
// Load input data.
in0 = load_input_data(input);
in1 = load_input_data(input + 8 * 1);
in2 = load_input_data(input + 8 * 2);
in3 = load_input_data(input + 8 * 3);
in4 = load_input_data(input + 8 * 4);
in5 = load_input_data(input + 8 * 5);
in6 = load_input_data(input + 8 * 6);
in7 = load_input_data(input + 8 * 7);
// 2-D
for (i = 0; i < 2; i++) {
// 8x8 Transpose is copied from vpx_fdct8x8_sse2()
TRANSPOSE_8X8(in0, in1, in2, in3, in4, in5, in6, in7, in0, in1, in2, in3,
in4, in5, in6, in7);
// 4-stage 1D idct8x8
{
/* Stage1 */
{
const __m128i lo_17 = _mm_unpacklo_epi16(in1, in7);
const __m128i hi_17 = _mm_unpackhi_epi16(in1, in7);
const __m128i lo_35 = _mm_unpacklo_epi16(in3, in5);
const __m128i hi_35 = _mm_unpackhi_epi16(in3, in5);
{
tmp0 = _mm_madd_epi16(lo_17, stg1_0);
tmp1 = _mm_madd_epi16(hi_17, stg1_0);
tmp2 = _mm_madd_epi16(lo_17, stg1_1);
tmp3 = _mm_madd_epi16(hi_17, stg1_1);
tmp4 = _mm_madd_epi16(lo_35, stg1_2);
tmp5 = _mm_madd_epi16(hi_35, stg1_2);
tmp6 = _mm_madd_epi16(lo_35, stg1_3);
tmp7 = _mm_madd_epi16(hi_35, stg1_3);
tmp0 = _mm_add_epi32(tmp0, rounding);
tmp1 = _mm_add_epi32(tmp1, rounding);
tmp2 = _mm_add_epi32(tmp2, rounding);
tmp3 = _mm_add_epi32(tmp3, rounding);
tmp4 = _mm_add_epi32(tmp4, rounding);
tmp5 = _mm_add_epi32(tmp5, rounding);
tmp6 = _mm_add_epi32(tmp6, rounding);
tmp7 = _mm_add_epi32(tmp7, rounding);
tmp0 = _mm_srai_epi32(tmp0, 14);
tmp1 = _mm_srai_epi32(tmp1, 14);
tmp2 = _mm_srai_epi32(tmp2, 14);
tmp3 = _mm_srai_epi32(tmp3, 14);
tmp4 = _mm_srai_epi32(tmp4, 14);
tmp5 = _mm_srai_epi32(tmp5, 14);
tmp6 = _mm_srai_epi32(tmp6, 14);
tmp7 = _mm_srai_epi32(tmp7, 14);
stp1_4 = _mm_packs_epi32(tmp0, tmp1);
stp1_7 = _mm_packs_epi32(tmp2, tmp3);
stp1_5 = _mm_packs_epi32(tmp4, tmp5);
stp1_6 = _mm_packs_epi32(tmp6, tmp7);
}
}
/* Stage2 */
{
const __m128i lo_26 = _mm_unpacklo_epi16(in2, in6);
const __m128i hi_26 = _mm_unpackhi_epi16(in2, in6);
{
tmp0 = _mm_add_epi16(in0, in4);
tmp1 = _mm_sub_epi16(in0, in4);
stp2_0 = _mm_mulhrs_epi16(tmp0, stg2_0);
stp2_1 = _mm_mulhrs_epi16(tmp1, stg2_0);
tmp0 = _mm_madd_epi16(lo_26, stg2_2);
tmp1 = _mm_madd_epi16(hi_26, stg2_2);
tmp2 = _mm_madd_epi16(lo_26, stg2_3);
tmp3 = _mm_madd_epi16(hi_26, stg2_3);
tmp0 = _mm_add_epi32(tmp0, rounding);
tmp1 = _mm_add_epi32(tmp1, rounding);
tmp2 = _mm_add_epi32(tmp2, rounding);
tmp3 = _mm_add_epi32(tmp3, rounding);
tmp0 = _mm_srai_epi32(tmp0, 14);
tmp1 = _mm_srai_epi32(tmp1, 14);
tmp2 = _mm_srai_epi32(tmp2, 14);
tmp3 = _mm_srai_epi32(tmp3, 14);
stp2_2 = _mm_packs_epi32(tmp0, tmp1);
stp2_3 = _mm_packs_epi32(tmp2, tmp3);
}
stp2_4 = _mm_add_epi16(stp1_4, stp1_5);
stp2_5 = _mm_sub_epi16(stp1_4, stp1_5);
stp2_6 = _mm_sub_epi16(stp1_7, stp1_6);
stp2_7 = _mm_add_epi16(stp1_7, stp1_6);
}
/* Stage3 */
{
stp1_0 = _mm_add_epi16(stp2_0, stp2_3);
stp1_1 = _mm_add_epi16(stp2_1, stp2_2);
stp1_2 = _mm_sub_epi16(stp2_1, stp2_2);
stp1_3 = _mm_sub_epi16(stp2_0, stp2_3);
tmp0 = _mm_sub_epi16(stp2_6, stp2_5);
tmp2 = _mm_add_epi16(stp2_6, stp2_5);
stp1_5 = _mm_mulhrs_epi16(tmp0, stg2_0);
stp1_6 = _mm_mulhrs_epi16(tmp2, stg2_0);
}
/* Stage4 */
in0 = _mm_add_epi16(stp1_0, stp2_7);
in1 = _mm_add_epi16(stp1_1, stp1_6);
in2 = _mm_add_epi16(stp1_2, stp1_5);
in3 = _mm_add_epi16(stp1_3, stp2_4);
in4 = _mm_sub_epi16(stp1_3, stp2_4);
in5 = _mm_sub_epi16(stp1_2, stp1_5);
in6 = _mm_sub_epi16(stp1_1, stp1_6);
in7 = _mm_sub_epi16(stp1_0, stp2_7);
}
}
// Final rounding and shift
in0 = _mm_adds_epi16(in0, final_rounding);
in1 = _mm_adds_epi16(in1, final_rounding);
in2 = _mm_adds_epi16(in2, final_rounding);
in3 = _mm_adds_epi16(in3, final_rounding);
in4 = _mm_adds_epi16(in4, final_rounding);
in5 = _mm_adds_epi16(in5, final_rounding);
in6 = _mm_adds_epi16(in6, final_rounding);
in7 = _mm_adds_epi16(in7, final_rounding);
in0 = _mm_srai_epi16(in0, 5);
in1 = _mm_srai_epi16(in1, 5);
in2 = _mm_srai_epi16(in2, 5);
in3 = _mm_srai_epi16(in3, 5);
in4 = _mm_srai_epi16(in4, 5);
in5 = _mm_srai_epi16(in5, 5);
in6 = _mm_srai_epi16(in6, 5);
in7 = _mm_srai_epi16(in7, 5);
RECON_AND_STORE(dest + 0 * stride, in0);
RECON_AND_STORE(dest + 1 * stride, in1);
RECON_AND_STORE(dest + 2 * stride, in2);
RECON_AND_STORE(dest + 3 * stride, in3);
RECON_AND_STORE(dest + 4 * stride, in4);
RECON_AND_STORE(dest + 5 * stride, in5);
RECON_AND_STORE(dest + 6 * stride, in6);
RECON_AND_STORE(dest + 7 * stride, in7);
}
void vpx_idct8x8_12_add_ssse3(const tran_low_t *input, uint8_t *dest,
int stride) {
const __m128i zero = _mm_setzero_si128();
const __m128i final_rounding = _mm_set1_epi16(1 << 4);
const __m128i stg1_0 = pair_set_epi16(2 * cospi_28_64, 2 * cospi_28_64);
const __m128i stg1_1 = pair_set_epi16(2 * cospi_4_64, 2 * cospi_4_64);
const __m128i stg1_2 = pair_set_epi16(-2 * cospi_20_64, -2 * cospi_20_64);
const __m128i stg1_3 = pair_set_epi16(2 * cospi_12_64, 2 * cospi_12_64);
const __m128i stg2_0 = pair_set_epi16(2 * cospi_16_64, 2 * cospi_16_64);
const __m128i stg2_2 = pair_set_epi16(2 * cospi_24_64, 2 * cospi_24_64);
const __m128i stg2_3 = pair_set_epi16(2 * cospi_8_64, 2 * cospi_8_64);
__m128i in0, in1, in2, in3, in4, in5, in6, in7;
__m128i stp1_0, stp1_1, stp1_2, stp1_3, stp1_4, stp1_5, stp1_6, stp1_7;
__m128i stp2_0, stp2_1, stp2_2, stp2_3, stp2_4, stp2_5, stp2_6, stp2_7;
__m128i tmp0, tmp1, tmp2, tmp3;
// Rows. Load 4-row input data.
in0 = load_input_data(input);
in1 = load_input_data(input + 8 * 1);
in2 = load_input_data(input + 8 * 2);
in3 = load_input_data(input + 8 * 3);
// 8x4 Transpose
TRANSPOSE_8X8_10(in0, in1, in2, in3, in0, in1);
// Stage1
tmp0 = _mm_mulhrs_epi16(in0, stg1_0);
tmp1 = _mm_mulhrs_epi16(in0, stg1_1);
tmp2 = _mm_mulhrs_epi16(in1, stg1_2);
tmp3 = _mm_mulhrs_epi16(in1, stg1_3);
stp1_4 = _mm_unpackhi_epi64(tmp0, tmp1);
stp1_5 = _mm_unpackhi_epi64(tmp2, tmp3);
// Stage2
tmp0 = _mm_mulhrs_epi16(in0, stg2_0);
stp2_0 = _mm_unpacklo_epi64(tmp0, tmp0);
tmp1 = _mm_mulhrs_epi16(in1, stg2_2);
tmp2 = _mm_mulhrs_epi16(in1, stg2_3);
stp2_2 = _mm_unpacklo_epi64(tmp2, tmp1);
tmp0 = _mm_add_epi16(stp1_4, stp1_5);
tmp1 = _mm_sub_epi16(stp1_4, stp1_5);
stp2_4 = tmp0;
stp2_5 = _mm_unpacklo_epi64(tmp1, zero);
stp2_6 = _mm_unpackhi_epi64(tmp1, zero);
// Stage3
tmp2 = _mm_add_epi16(stp2_0, stp2_2);
tmp3 = _mm_sub_epi16(stp2_0, stp2_2);
stp1_2 = _mm_unpackhi_epi64(tmp3, tmp2);
stp1_3 = _mm_unpacklo_epi64(tmp3, tmp2);
tmp0 = _mm_sub_epi16(stp2_6, stp2_5);
tmp1 = _mm_add_epi16(stp2_6, stp2_5);
tmp2 = _mm_mulhrs_epi16(tmp0, stg2_0);
tmp3 = _mm_mulhrs_epi16(tmp1, stg2_0);
stp1_5 = _mm_unpacklo_epi64(tmp2, tmp3);
// Stage4
tmp0 = _mm_add_epi16(stp1_3, stp2_4);
tmp1 = _mm_add_epi16(stp1_2, stp1_5);
tmp2 = _mm_sub_epi16(stp1_3, stp2_4);
tmp3 = _mm_sub_epi16(stp1_2, stp1_5);
TRANSPOSE_4X8_10(tmp0, tmp1, tmp2, tmp3, in0, in1, in2, in3)
/* Stage1 */
stp1_4 = _mm_mulhrs_epi16(in1, stg1_0);
stp1_7 = _mm_mulhrs_epi16(in1, stg1_1);
stp1_5 = _mm_mulhrs_epi16(in3, stg1_2);
stp1_6 = _mm_mulhrs_epi16(in3, stg1_3);
/* Stage2 */
stp2_0 = _mm_mulhrs_epi16(in0, stg2_0);
stp2_1 = _mm_mulhrs_epi16(in0, stg2_0);
stp2_2 = _mm_mulhrs_epi16(in2, stg2_2);
stp2_3 = _mm_mulhrs_epi16(in2, stg2_3);
stp2_4 = _mm_add_epi16(stp1_4, stp1_5);
stp2_5 = _mm_sub_epi16(stp1_4, stp1_5);
stp2_6 = _mm_sub_epi16(stp1_7, stp1_6);
stp2_7 = _mm_add_epi16(stp1_7, stp1_6);
/* Stage3 */
stp1_0 = _mm_add_epi16(stp2_0, stp2_3);
stp1_1 = _mm_add_epi16(stp2_1, stp2_2);
stp1_2 = _mm_sub_epi16(stp2_1, stp2_2);
stp1_3 = _mm_sub_epi16(stp2_0, stp2_3);
tmp0 = _mm_add_epi16(stp2_6, stp2_5);
tmp1 = _mm_sub_epi16(stp2_6, stp2_5);
stp1_6 = _mm_mulhrs_epi16(tmp0, stg2_0);
stp1_5 = _mm_mulhrs_epi16(tmp1, stg2_0);
/* Stage4 */
in0 = _mm_add_epi16(stp1_0, stp2_7);
in1 = _mm_add_epi16(stp1_1, stp1_6);
in2 = _mm_add_epi16(stp1_2, stp1_5);
in3 = _mm_add_epi16(stp1_3, stp2_4);
in4 = _mm_sub_epi16(stp1_3, stp2_4);
in5 = _mm_sub_epi16(stp1_2, stp1_5);
in6 = _mm_sub_epi16(stp1_1, stp1_6);
in7 = _mm_sub_epi16(stp1_0, stp2_7);
// Final rounding and shift
in0 = _mm_adds_epi16(in0, final_rounding);
in1 = _mm_adds_epi16(in1, final_rounding);
in2 = _mm_adds_epi16(in2, final_rounding);
in3 = _mm_adds_epi16(in3, final_rounding);
in4 = _mm_adds_epi16(in4, final_rounding);
in5 = _mm_adds_epi16(in5, final_rounding);
in6 = _mm_adds_epi16(in6, final_rounding);
in7 = _mm_adds_epi16(in7, final_rounding);
in0 = _mm_srai_epi16(in0, 5);
in1 = _mm_srai_epi16(in1, 5);
in2 = _mm_srai_epi16(in2, 5);
in3 = _mm_srai_epi16(in3, 5);
in4 = _mm_srai_epi16(in4, 5);
in5 = _mm_srai_epi16(in5, 5);
in6 = _mm_srai_epi16(in6, 5);
in7 = _mm_srai_epi16(in7, 5);
RECON_AND_STORE(dest + 0 * stride, in0);
RECON_AND_STORE(dest + 1 * stride, in1);
RECON_AND_STORE(dest + 2 * stride, in2);
RECON_AND_STORE(dest + 3 * stride, in3);
RECON_AND_STORE(dest + 4 * stride, in4);
RECON_AND_STORE(dest + 5 * stride, in5);
RECON_AND_STORE(dest + 6 * stride, in6);
RECON_AND_STORE(dest + 7 * stride, in7);
}
static INLINE void idct32_34(const __m128i *in, __m128i *stp1) {
const __m128i rounding = _mm_set1_epi32(DCT_CONST_ROUNDING);
// idct constants for each stage
const __m128i stk1_0 = pair_set_epi16(2 * cospi_31_64, 2 * cospi_31_64);
const __m128i stk1_1 = pair_set_epi16(2 * cospi_1_64, 2 * cospi_1_64);
const __m128i stk1_6 = pair_set_epi16(-2 * cospi_25_64, -2 * cospi_25_64);
const __m128i stk1_7 = pair_set_epi16(2 * cospi_7_64, 2 * cospi_7_64);
const __m128i stk1_8 = pair_set_epi16(2 * cospi_27_64, 2 * cospi_27_64);
const __m128i stk1_9 = pair_set_epi16(2 * cospi_5_64, 2 * cospi_5_64);
const __m128i stk1_14 = pair_set_epi16(-2 * cospi_29_64, -2 * cospi_29_64);
const __m128i stk1_15 = pair_set_epi16(2 * cospi_3_64, 2 * cospi_3_64);
const __m128i stk2_0 = pair_set_epi16(2 * cospi_30_64, 2 * cospi_30_64);
const __m128i stk2_1 = pair_set_epi16(2 * cospi_2_64, 2 * cospi_2_64);
const __m128i stk2_6 = pair_set_epi16(-2 * cospi_26_64, -2 * cospi_26_64);
const __m128i stk2_7 = pair_set_epi16(2 * cospi_6_64, 2 * cospi_6_64);
const __m128i stk3_0 = pair_set_epi16(2 * cospi_28_64, 2 * cospi_28_64);
const __m128i stk3_1 = pair_set_epi16(2 * cospi_4_64, 2 * cospi_4_64);
const __m128i stg3_4 = pair_set_epi16(-cospi_4_64, cospi_28_64);
const __m128i stg3_5 = pair_set_epi16(cospi_28_64, cospi_4_64);
const __m128i stg3_6 = pair_set_epi16(-cospi_28_64, -cospi_4_64);
const __m128i stg3_8 = pair_set_epi16(-cospi_20_64, cospi_12_64);
const __m128i stg3_9 = pair_set_epi16(cospi_12_64, cospi_20_64);
const __m128i stg3_10 = pair_set_epi16(-cospi_12_64, -cospi_20_64);
const __m128i stg4_0 = pair_set_epi16(cospi_16_64, cospi_16_64);
const __m128i stk4_0 = pair_set_epi16(2 * cospi_16_64, 2 * cospi_16_64);
const __m128i stg4_1 = pair_set_epi16(cospi_16_64, -cospi_16_64);
const __m128i stg4_4 = pair_set_epi16(-cospi_8_64, cospi_24_64);
const __m128i stg4_5 = pair_set_epi16(cospi_24_64, cospi_8_64);
const __m128i stg4_6 = pair_set_epi16(-cospi_24_64, -cospi_8_64);
const __m128i stg6_0 = pair_set_epi16(-cospi_16_64, cospi_16_64);
__m128i stp2_0, stp2_1, stp2_2, stp2_3, stp2_4, stp2_5, stp2_6, stp2_7,
stp2_8, stp2_9, stp2_10, stp2_11, stp2_12, stp2_13, stp2_14, stp2_15,
stp2_16, stp2_17, stp2_18, stp2_19, stp2_20, stp2_21, stp2_22, stp2_23,
stp2_24, stp2_25, stp2_26, stp2_27, stp2_28, stp2_29, stp2_30, stp2_31;
__m128i tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
/* Stage1 */
stp1[16] = _mm_mulhrs_epi16(in[1], stk1_0);
stp1[31] = _mm_mulhrs_epi16(in[1], stk1_1);
stp1[19] = _mm_mulhrs_epi16(in[7], stk1_6);
stp1[28] = _mm_mulhrs_epi16(in[7], stk1_7);
stp1[20] = _mm_mulhrs_epi16(in[5], stk1_8);
stp1[27] = _mm_mulhrs_epi16(in[5], stk1_9);
stp1[23] = _mm_mulhrs_epi16(in[3], stk1_14);
stp1[24] = _mm_mulhrs_epi16(in[3], stk1_15);
/* Stage2 */
stp2_8 = _mm_mulhrs_epi16(in[2], stk2_0);
stp2_15 = _mm_mulhrs_epi16(in[2], stk2_1);
stp2_11 = _mm_mulhrs_epi16(in[6], stk2_6);
stp2_12 = _mm_mulhrs_epi16(in[6], stk2_7);
/* Stage3 */
{
const __m128i lo_17_30 = _mm_unpacklo_epi16(stp1[16], stp1[31]);
const __m128i hi_17_30 = _mm_unpackhi_epi16(stp1[16], stp1[31]);
const __m128i lo_18_29 = _mm_unpacklo_epi16(stp1[19], stp1[28]);
const __m128i hi_18_29 = _mm_unpackhi_epi16(stp1[19], stp1[28]);
const __m128i lo_21_26 = _mm_unpacklo_epi16(stp1[20], stp1[27]);
const __m128i hi_21_26 = _mm_unpackhi_epi16(stp1[20], stp1[27]);
const __m128i lo_22_25 = _mm_unpacklo_epi16(stp1[23], stp1[24]);
const __m128i hi_22_25 = _mm_unpackhi_epi16(stp1[23], stp1[24]);
stp1[4] = _mm_mulhrs_epi16(in[4], stk3_0);
stp1[7] = _mm_mulhrs_epi16(in[4], stk3_1);
MULTIPLICATION_AND_ADD(lo_17_30, hi_17_30, lo_18_29, hi_18_29, stg3_4,
stg3_5, stg3_6, stg3_4, stp1[17], stp1[30], stp1[18],
stp1[29])
MULTIPLICATION_AND_ADD(lo_21_26, hi_21_26, lo_22_25, hi_22_25, stg3_8,
stg3_9, stg3_10, stg3_8, stp1[21], stp1[26],
stp1[22], stp1[25])
}
/* Stage4 */
{
const __m128i lo_9_14 = _mm_unpacklo_epi16(stp2_8, stp2_15);
const __m128i hi_9_14 = _mm_unpackhi_epi16(stp2_8, stp2_15);
const __m128i lo_10_13 = _mm_unpacklo_epi16(stp2_11, stp2_12);
const __m128i hi_10_13 = _mm_unpackhi_epi16(stp2_11, stp2_12);
stp1[0] = _mm_mulhrs_epi16(in[0], stk4_0);
stp1[1] = _mm_mulhrs_epi16(in[0], stk4_0); // stk4_1 = stk4_0
stp1[2] = stp1[0];
stp1[3] = stp1[1];
MULTIPLICATION_AND_ADD(lo_9_14, hi_9_14, lo_10_13, hi_10_13, stg4_4, stg4_5,
stg4_6, stg4_4, stp2_9, stp2_14, stp2_10, stp2_13)
stp2_16 = _mm_add_epi16(stp1[16], stp1[19]);
stp2_17 = _mm_add_epi16(stp1[17], stp1[18]);
stp2_18 = _mm_sub_epi16(stp1[17], stp1[18]);
stp2_19 = _mm_sub_epi16(stp1[16], stp1[19]);
stp2_20 = _mm_sub_epi16(stp1[23], stp1[20]);
stp2_21 = _mm_sub_epi16(stp1[22], stp1[21]);
stp2_22 = _mm_add_epi16(stp1[22], stp1[21]);
stp2_23 = _mm_add_epi16(stp1[23], stp1[20]);
stp2_24 = _mm_add_epi16(stp1[24], stp1[27]);
stp2_25 = _mm_add_epi16(stp1[25], stp1[26]);
stp2_26 = _mm_sub_epi16(stp1[25], stp1[26]);
stp2_27 = _mm_sub_epi16(stp1[24], stp1[27]);
stp2_28 = _mm_sub_epi16(stp1[31], stp1[28]);
stp2_29 = _mm_sub_epi16(stp1[30], stp1[29]);
stp2_30 = _mm_add_epi16(stp1[29], stp1[30]);
stp2_31 = _mm_add_epi16(stp1[28], stp1[31]);
}
/* Stage5 */
{
// Note:
// #define AVOID_OVERFLOW = 0, code would be faster. But it can't pass
// SingleExtreme test. The MaxSupportedCoeff/MinSupportedCoeff must drop
// to 23198 and -23197, respectively.
#define AVOID_OVERFLOW (1)
#if AVOID_OVERFLOW
const __m128i lo_6_5 = _mm_unpacklo_epi16(stp1[7], stp1[4]);
const __m128i hi_6_5 = _mm_unpackhi_epi16(stp1[7], stp1[4]);
#endif
const __m128i lo_18_29 = _mm_unpacklo_epi16(stp2_18, stp2_29);
const __m128i hi_18_29 = _mm_unpackhi_epi16(stp2_18, stp2_29);
const __m128i lo_19_28 = _mm_unpacklo_epi16(stp2_19, stp2_28);
const __m128i hi_19_28 = _mm_unpackhi_epi16(stp2_19, stp2_28);
const __m128i lo_20_27 = _mm_unpacklo_epi16(stp2_20, stp2_27);
const __m128i hi_20_27 = _mm_unpackhi_epi16(stp2_20, stp2_27);
const __m128i lo_21_26 = _mm_unpacklo_epi16(stp2_21, stp2_26);
const __m128i hi_21_26 = _mm_unpackhi_epi16(stp2_21, stp2_26);
#if AVOID_OVERFLOW
tmp0 = _mm_madd_epi16(lo_6_5, stg4_1);
tmp1 = _mm_madd_epi16(hi_6_5, stg4_1);
tmp2 = _mm_madd_epi16(lo_6_5, stg4_0);
tmp3 = _mm_madd_epi16(hi_6_5, stg4_0);
tmp0 = _mm_add_epi32(tmp0, rounding);
tmp1 = _mm_add_epi32(tmp1, rounding);
tmp2 = _mm_add_epi32(tmp2, rounding);
tmp3 = _mm_add_epi32(tmp3, rounding);
tmp0 = _mm_srai_epi32(tmp0, DCT_CONST_BITS);
tmp1 = _mm_srai_epi32(tmp1, DCT_CONST_BITS);
tmp2 = _mm_srai_epi32(tmp2, DCT_CONST_BITS);
tmp3 = _mm_srai_epi32(tmp3, DCT_CONST_BITS);
stp1[5] = _mm_packs_epi32(tmp0, tmp1);
stp1[6] = _mm_packs_epi32(tmp2, tmp3);
#else
tmp0 = _mm_sub_epi16(stp1[7], stp1[4]);
tmp1 = _mm_adds_epi16(stp1[7], stp1[4]);
stp1[5] = _mm_mulhrs_epi16(tmp0, stk4_0);
stp1[6] = _mm_mulhrs_epi16(tmp1, stk4_0);
#endif
stp1[8] = _mm_add_epi16(stp2_8, stp2_11);
stp1[9] = _mm_add_epi16(stp2_9, stp2_10);
stp1[10] = _mm_sub_epi16(stp2_9, stp2_10);
stp1[11] = _mm_sub_epi16(stp2_8, stp2_11);
stp1[12] = _mm_sub_epi16(stp2_15, stp2_12);
stp1[13] = _mm_sub_epi16(stp2_14, stp2_13);
stp1[14] = _mm_add_epi16(stp2_14, stp2_13);
stp1[15] = _mm_add_epi16(stp2_15, stp2_12);
MULTIPLICATION_AND_ADD(lo_18_29, hi_18_29, lo_19_28, hi_19_28, stg4_4,
stg4_5, stg4_4, stg4_5, stp1[18], stp1[29], stp1[19],
stp1[28])
MULTIPLICATION_AND_ADD(lo_20_27, hi_20_27, lo_21_26, hi_21_26, stg4_6,
stg4_4, stg4_6, stg4_4, stp1[20], stp1[27], stp1[21],
stp1[26])
stp1[16] = stp2_16;
stp1[17] = stp2_17;
stp1[22] = stp2_22;
stp1[23] = stp2_23;
stp1[24] = stp2_24;
stp1[25] = stp2_25;
stp1[30] = stp2_30;
stp1[31] = stp2_31;
}
/* Stage6 */
{
#if AVOID_OVERFLOW
const __m128i lo_10_13 = _mm_unpacklo_epi16(stp1[10], stp1[13]);
const __m128i hi_10_13 = _mm_unpackhi_epi16(stp1[10], stp1[13]);
const __m128i lo_11_12 = _mm_unpacklo_epi16(stp1[11], stp1[12]);
const __m128i hi_11_12 = _mm_unpackhi_epi16(stp1[11], stp1[12]);
#endif
stp2_0 = _mm_add_epi16(stp1[0], stp1[7]);
stp2_1 = _mm_add_epi16(stp1[1], stp1[6]);
stp2_2 = _mm_add_epi16(stp1[2], stp1[5]);
stp2_3 = _mm_add_epi16(stp1[3], stp1[4]);
stp2_4 = _mm_sub_epi16(stp1[3], stp1[4]);
stp2_5 = _mm_sub_epi16(stp1[2], stp1[5]);
stp2_6 = _mm_sub_epi16(stp1[1], stp1[6]);
stp2_7 = _mm_sub_epi16(stp1[0], stp1[7]);
stp2_8 = stp1[8];
stp2_9 = stp1[9];
stp2_14 = stp1[14];
stp2_15 = stp1[15];
#if AVOID_OVERFLOW
MULTIPLICATION_AND_ADD(lo_10_13, hi_10_13, lo_11_12, hi_11_12, stg6_0,
stg4_0, stg6_0, stg4_0, stp2_10, stp2_13, stp2_11,
stp2_12)
#else
tmp0 = _mm_add_epi16(stp1[10], stp1[13]);
tmp1 = _mm_sub_epi16(stp1[13], stp1[10]);
tmp2 = _mm_add_epi16(stp1[11], stp1[12]);
tmp3 = _mm_sub_epi16(stp1[12], stp1[11]);
stp2_10 = _mm_mulhrs_epi16(tmp1, stk4_0);
stp2_13 = _mm_mulhrs_epi16(tmp0, stk4_0);
stp2_11 = _mm_mulhrs_epi16(tmp3, stk4_0);
stp2_12 = _mm_mulhrs_epi16(tmp2, stk4_0);
#endif
stp2_16 = _mm_add_epi16(stp1[16], stp1[23]);
stp2_17 = _mm_add_epi16(stp1[17], stp1[22]);
stp2_18 = _mm_add_epi16(stp1[18], stp1[21]);
stp2_19 = _mm_add_epi16(stp1[19], stp1[20]);
stp2_20 = _mm_sub_epi16(stp1[19], stp1[20]);
stp2_21 = _mm_sub_epi16(stp1[18], stp1[21]);
stp2_22 = _mm_sub_epi16(stp1[17], stp1[22]);
stp2_23 = _mm_sub_epi16(stp1[16], stp1[23]);
stp2_24 = _mm_sub_epi16(stp1[31], stp1[24]);
stp2_25 = _mm_sub_epi16(stp1[30], stp1[25]);
stp2_26 = _mm_sub_epi16(stp1[29], stp1[26]);
stp2_27 = _mm_sub_epi16(stp1[28], stp1[27]);
stp2_28 = _mm_add_epi16(stp1[27], stp1[28]);
stp2_29 = _mm_add_epi16(stp1[26], stp1[29]);
stp2_30 = _mm_add_epi16(stp1[25], stp1[30]);
stp2_31 = _mm_add_epi16(stp1[24], stp1[31]);
}
/* Stage7 */
{
#if AVOID_OVERFLOW
const __m128i lo_20_27 = _mm_unpacklo_epi16(stp2_20, stp2_27);
const __m128i hi_20_27 = _mm_unpackhi_epi16(stp2_20, stp2_27);
const __m128i lo_21_26 = _mm_unpacklo_epi16(stp2_21, stp2_26);
const __m128i hi_21_26 = _mm_unpackhi_epi16(stp2_21, stp2_26);
const __m128i lo_22_25 = _mm_unpacklo_epi16(stp2_22, stp2_25);
const __m128i hi_22_25 = _mm_unpackhi_epi16(stp2_22, stp2_25);
const __m128i lo_23_24 = _mm_unpacklo_epi16(stp2_23, stp2_24);
const __m128i hi_23_24 = _mm_unpackhi_epi16(stp2_23, stp2_24);
#endif
stp1[0] = _mm_add_epi16(stp2_0, stp2_15);
stp1[1] = _mm_add_epi16(stp2_1, stp2_14);
stp1[2] = _mm_add_epi16(stp2_2, stp2_13);
stp1[3] = _mm_add_epi16(stp2_3, stp2_12);
stp1[4] = _mm_add_epi16(stp2_4, stp2_11);
stp1[5] = _mm_add_epi16(stp2_5, stp2_10);
stp1[6] = _mm_add_epi16(stp2_6, stp2_9);
stp1[7] = _mm_add_epi16(stp2_7, stp2_8);
stp1[8] = _mm_sub_epi16(stp2_7, stp2_8);
stp1[9] = _mm_sub_epi16(stp2_6, stp2_9);
stp1[10] = _mm_sub_epi16(stp2_5, stp2_10);
stp1[11] = _mm_sub_epi16(stp2_4, stp2_11);
stp1[12] = _mm_sub_epi16(stp2_3, stp2_12);
stp1[13] = _mm_sub_epi16(stp2_2, stp2_13);
stp1[14] = _mm_sub_epi16(stp2_1, stp2_14);
stp1[15] = _mm_sub_epi16(stp2_0, stp2_15);
stp1[16] = stp2_16;
stp1[17] = stp2_17;
stp1[18] = stp2_18;
stp1[19] = stp2_19;
#if AVOID_OVERFLOW
MULTIPLICATION_AND_ADD(lo_20_27, hi_20_27, lo_21_26, hi_21_26, stg6_0,
stg4_0, stg6_0, stg4_0, stp1[20], stp1[27], stp1[21],
stp1[26])
MULTIPLICATION_AND_ADD(lo_22_25, hi_22_25, lo_23_24, hi_23_24, stg6_0,
stg4_0, stg6_0, stg4_0, stp1[22], stp1[25], stp1[23],
stp1[24])
#else
tmp0 = _mm_add_epi16(stp2_20, stp2_27);
tmp1 = _mm_sub_epi16(stp2_27, stp2_20);
tmp2 = _mm_add_epi16(stp2_21, stp2_26);
tmp3 = _mm_sub_epi16(stp2_26, stp2_21);
stp1[20] = _mm_mulhrs_epi16(tmp1, stk4_0);
stp1[27] = _mm_mulhrs_epi16(tmp0, stk4_0);
stp1[21] = _mm_mulhrs_epi16(tmp3, stk4_0);
stp1[26] = _mm_mulhrs_epi16(tmp2, stk4_0);
tmp0 = _mm_add_epi16(stp2_22, stp2_25);
tmp1 = _mm_sub_epi16(stp2_25, stp2_22);
tmp2 = _mm_add_epi16(stp2_23, stp2_24);
tmp3 = _mm_sub_epi16(stp2_24, stp2_23);
stp1[22] = _mm_mulhrs_epi16(tmp1, stk4_0);
stp1[25] = _mm_mulhrs_epi16(tmp0, stk4_0);
stp1[23] = _mm_mulhrs_epi16(tmp3, stk4_0);
stp1[24] = _mm_mulhrs_epi16(tmp2, stk4_0);
#endif
stp1[28] = stp2_28;
stp1[29] = stp2_29;
stp1[30] = stp2_30;
stp1[31] = stp2_31;
}
#undef AVOID_OVERFLOW
}
// Only upper-left 8x8 has non-zero coeff
void vpx_idct32x32_34_add_ssse3(const tran_low_t *input, uint8_t *dest,
int stride) {
const __m128i zero = _mm_setzero_si128();
const __m128i final_rounding = _mm_set1_epi16(1 << 5);
__m128i in[32], col[32];
__m128i stp1[32];
int i;
// Load input data. Only need to load the top left 8x8 block.
in[0] = load_input_data(input);
in[1] = load_input_data(input + 32);
in[2] = load_input_data(input + 64);
in[3] = load_input_data(input + 96);
in[4] = load_input_data(input + 128);
in[5] = load_input_data(input + 160);
in[6] = load_input_data(input + 192);
in[7] = load_input_data(input + 224);
array_transpose_8x8(in, in);
idct32_34(in, stp1);
// 1_D: Store 32 intermediate results for each 8x32 block.
col[0] = _mm_add_epi16(stp1[0], stp1[31]);
col[1] = _mm_add_epi16(stp1[1], stp1[30]);
col[2] = _mm_add_epi16(stp1[2], stp1[29]);
col[3] = _mm_add_epi16(stp1[3], stp1[28]);
col[4] = _mm_add_epi16(stp1[4], stp1[27]);
col[5] = _mm_add_epi16(stp1[5], stp1[26]);
col[6] = _mm_add_epi16(stp1[6], stp1[25]);
col[7] = _mm_add_epi16(stp1[7], stp1[24]);
col[8] = _mm_add_epi16(stp1[8], stp1[23]);
col[9] = _mm_add_epi16(stp1[9], stp1[22]);
col[10] = _mm_add_epi16(stp1[10], stp1[21]);
col[11] = _mm_add_epi16(stp1[11], stp1[20]);
col[12] = _mm_add_epi16(stp1[12], stp1[19]);
col[13] = _mm_add_epi16(stp1[13], stp1[18]);
col[14] = _mm_add_epi16(stp1[14], stp1[17]);
col[15] = _mm_add_epi16(stp1[15], stp1[16]);
col[16] = _mm_sub_epi16(stp1[15], stp1[16]);
col[17] = _mm_sub_epi16(stp1[14], stp1[17]);
col[18] = _mm_sub_epi16(stp1[13], stp1[18]);
col[19] = _mm_sub_epi16(stp1[12], stp1[19]);
col[20] = _mm_sub_epi16(stp1[11], stp1[20]);
col[21] = _mm_sub_epi16(stp1[10], stp1[21]);
col[22] = _mm_sub_epi16(stp1[9], stp1[22]);
col[23] = _mm_sub_epi16(stp1[8], stp1[23]);
col[24] = _mm_sub_epi16(stp1[7], stp1[24]);
col[25] = _mm_sub_epi16(stp1[6], stp1[25]);
col[26] = _mm_sub_epi16(stp1[5], stp1[26]);
col[27] = _mm_sub_epi16(stp1[4], stp1[27]);
col[28] = _mm_sub_epi16(stp1[3], stp1[28]);
col[29] = _mm_sub_epi16(stp1[2], stp1[29]);
col[30] = _mm_sub_epi16(stp1[1], stp1[30]);
col[31] = _mm_sub_epi16(stp1[0], stp1[31]);
for (i = 0; i < 4; i++) {
int j;
// Transpose 32x8 block to 8x32 block
array_transpose_8x8(col + i * 8, in);
idct32_34(in, stp1);
// 2_D: Calculate the results and store them to destination.
in[0] = _mm_add_epi16(stp1[0], stp1[31]);
in[1] = _mm_add_epi16(stp1[1], stp1[30]);
in[2] = _mm_add_epi16(stp1[2], stp1[29]);
in[3] = _mm_add_epi16(stp1[3], stp1[28]);
in[4] = _mm_add_epi16(stp1[4], stp1[27]);
in[5] = _mm_add_epi16(stp1[5], stp1[26]);
in[6] = _mm_add_epi16(stp1[6], stp1[25]);
in[7] = _mm_add_epi16(stp1[7], stp1[24]);
in[8] = _mm_add_epi16(stp1[8], stp1[23]);
in[9] = _mm_add_epi16(stp1[9], stp1[22]);
in[10] = _mm_add_epi16(stp1[10], stp1[21]);
in[11] = _mm_add_epi16(stp1[11], stp1[20]);
in[12] = _mm_add_epi16(stp1[12], stp1[19]);
in[13] = _mm_add_epi16(stp1[13], stp1[18]);
in[14] = _mm_add_epi16(stp1[14], stp1[17]);
in[15] = _mm_add_epi16(stp1[15], stp1[16]);
in[16] = _mm_sub_epi16(stp1[15], stp1[16]);
in[17] = _mm_sub_epi16(stp1[14], stp1[17]);
in[18] = _mm_sub_epi16(stp1[13], stp1[18]);
in[19] = _mm_sub_epi16(stp1[12], stp1[19]);
in[20] = _mm_sub_epi16(stp1[11], stp1[20]);
in[21] = _mm_sub_epi16(stp1[10], stp1[21]);
in[22] = _mm_sub_epi16(stp1[9], stp1[22]);
in[23] = _mm_sub_epi16(stp1[8], stp1[23]);
in[24] = _mm_sub_epi16(stp1[7], stp1[24]);
in[25] = _mm_sub_epi16(stp1[6], stp1[25]);
in[26] = _mm_sub_epi16(stp1[5], stp1[26]);
in[27] = _mm_sub_epi16(stp1[4], stp1[27]);
in[28] = _mm_sub_epi16(stp1[3], stp1[28]);
in[29] = _mm_sub_epi16(stp1[2], stp1[29]);
in[30] = _mm_sub_epi16(stp1[1], stp1[30]);
in[31] = _mm_sub_epi16(stp1[0], stp1[31]);
for (j = 0; j < 32; ++j) {
// Final rounding and shift
in[j] = _mm_adds_epi16(in[j], final_rounding);
in[j] = _mm_srai_epi16(in[j], 6);
RECON_AND_STORE(dest + j * stride, in[j]);
}
dest += 8;
}
}