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FFmpeg/libavcodec/loongarch/h264idct_lasx.c
Lu Wang 5ff58b77bb avcodec: [loongarch] Optimize h264idct with LASX. 
./ffmpeg -i ../1_h264_1080p_30fps_3Mbps.mp4 -f rawvideo -y /dev/null -an
before:282
after :293

Change-Id: Ia8889935a6359630dd5dbb61263287f1cb24a0a4
Reviewed-by: Shiyou Yin <yinshiyou-hf@loongson.cn>
Reviewed-by: guxiwei <guxiwei-hf@loongson.cn>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2021-12-15 18:37:40 +01:00

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/*
* Loongson LASX optimized h264dsp
*
* Copyright (c) 2021 Loongson Technology Corporation Limited
* Contributed by Shiyou Yin <yinshiyou-hf@loongson.cn>
* Xiwei Gu <guxiwei-hf@loongson.cn>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/loongarch/loongson_intrinsics.h"
#include "h264dsp_lasx.h"
#include "libavcodec/bit_depth_template.c"
#define AVC_ITRANS_H(in0, in1, in2, in3, out0, out1, out2, out3) \
{ \
__m256i tmp0_m, tmp1_m, tmp2_m, tmp3_m; \
\
tmp0_m = __lasx_xvadd_h(in0, in2); \
tmp1_m = __lasx_xvsub_h(in0, in2); \
tmp2_m = __lasx_xvsrai_h(in1, 1); \
tmp2_m = __lasx_xvsub_h(tmp2_m, in3); \
tmp3_m = __lasx_xvsrai_h(in3, 1); \
tmp3_m = __lasx_xvadd_h(in1, tmp3_m); \
\
LASX_BUTTERFLY_4_H(tmp0_m, tmp1_m, tmp2_m, tmp3_m, \
out0, out1, out2, out3); \
}
void ff_h264_idct_add_lasx(uint8_t *dst, int16_t *src, int32_t dst_stride)
{
__m256i src0_m, src1_m, src2_m, src3_m;
__m256i dst0_m, dst1_m;
__m256i hres0, hres1, hres2, hres3, vres0, vres1, vres2, vres3;
__m256i inp0_m, inp1_m, res0_m, src1, src3;
__m256i src0 = __lasx_xvld(src, 0);
__m256i src2 = __lasx_xvld(src, 16);
__m256i zero = __lasx_xvldi(0);
int32_t dst_stride_2x = dst_stride << 1;
int32_t dst_stride_3x = dst_stride_2x + dst_stride;
__lasx_xvst(zero, src, 0);
DUP2_ARG2(__lasx_xvilvh_d, src0, src0, src2, src2, src1, src3);
AVC_ITRANS_H(src0, src1, src2, src3, hres0, hres1, hres2, hres3);
LASX_TRANSPOSE4x4_H(hres0, hres1, hres2, hres3, hres0, hres1, hres2, hres3);
AVC_ITRANS_H(hres0, hres1, hres2, hres3, vres0, vres1, vres2, vres3);
DUP4_ARG2(__lasx_xvldx, dst, 0, dst, dst_stride, dst, dst_stride_2x,
dst, dst_stride_3x, src0_m, src1_m, src2_m, src3_m);
DUP4_ARG2(__lasx_xvld, dst, 0, dst + dst_stride, 0, dst + dst_stride_2x,
0, dst + dst_stride_3x, 0, src0_m, src1_m, src2_m, src3_m);
DUP2_ARG2(__lasx_xvilvl_d, vres1, vres0, vres3, vres2, inp0_m, inp1_m);
inp0_m = __lasx_xvpermi_q(inp1_m, inp0_m, 0x20);
inp0_m = __lasx_xvsrari_h(inp0_m, 6);
DUP2_ARG2(__lasx_xvilvl_w, src1_m, src0_m, src3_m, src2_m, dst0_m, dst1_m);
dst0_m = __lasx_xvilvl_d(dst1_m, dst0_m);
res0_m = __lasx_vext2xv_hu_bu(dst0_m);
res0_m = __lasx_xvadd_h(res0_m, inp0_m);
res0_m = __lasx_xvclip255_h(res0_m);
dst0_m = __lasx_xvpickev_b(res0_m, res0_m);
__lasx_xvstelm_w(dst0_m, dst, 0, 0);
__lasx_xvstelm_w(dst0_m, dst + dst_stride, 0, 1);
__lasx_xvstelm_w(dst0_m, dst + dst_stride_2x, 0, 4);
__lasx_xvstelm_w(dst0_m, dst + dst_stride_3x, 0, 5);
}
void ff_h264_idct8_addblk_lasx(uint8_t *dst, int16_t *src,
int32_t dst_stride)
{
__m256i src0, src1, src2, src3, src4, src5, src6, src7;
__m256i vec0, vec1, vec2, vec3;
__m256i tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
__m256i res0, res1, res2, res3, res4, res5, res6, res7;
__m256i dst0, dst1, dst2, dst3, dst4, dst5, dst6, dst7;
__m256i zero = __lasx_xvldi(0);
int32_t dst_stride_2x = dst_stride << 1;
int32_t dst_stride_4x = dst_stride << 2;
int32_t dst_stride_3x = dst_stride_2x + dst_stride;
src[0] += 32;
DUP4_ARG2(__lasx_xvld, src, 0, src, 16, src, 32, src, 48,
src0, src1, src2, src3);
DUP4_ARG2(__lasx_xvld, src, 64, src, 80, src, 96, src, 112,
src4, src5, src6, src7);
__lasx_xvst(zero, src, 0);
__lasx_xvst(zero, src, 32);
__lasx_xvst(zero, src, 64);
__lasx_xvst(zero, src, 96);
vec0 = __lasx_xvadd_h(src0, src4);
vec1 = __lasx_xvsub_h(src0, src4);
vec2 = __lasx_xvsrai_h(src2, 1);
vec2 = __lasx_xvsub_h(vec2, src6);
vec3 = __lasx_xvsrai_h(src6, 1);
vec3 = __lasx_xvadd_h(src2, vec3);
LASX_BUTTERFLY_4_H(vec0, vec1, vec2, vec3, tmp0, tmp1, tmp2, tmp3);
vec0 = __lasx_xvsrai_h(src7, 1);
vec0 = __lasx_xvsub_h(src5, vec0);
vec0 = __lasx_xvsub_h(vec0, src3);
vec0 = __lasx_xvsub_h(vec0, src7);
vec1 = __lasx_xvsrai_h(src3, 1);
vec1 = __lasx_xvsub_h(src1, vec1);
vec1 = __lasx_xvadd_h(vec1, src7);
vec1 = __lasx_xvsub_h(vec1, src3);
vec2 = __lasx_xvsrai_h(src5, 1);
vec2 = __lasx_xvsub_h(vec2, src1);
vec2 = __lasx_xvadd_h(vec2, src7);
vec2 = __lasx_xvadd_h(vec2, src5);
vec3 = __lasx_xvsrai_h(src1, 1);
vec3 = __lasx_xvadd_h(src3, vec3);
vec3 = __lasx_xvadd_h(vec3, src5);
vec3 = __lasx_xvadd_h(vec3, src1);
tmp4 = __lasx_xvsrai_h(vec3, 2);
tmp4 = __lasx_xvadd_h(tmp4, vec0);
tmp5 = __lasx_xvsrai_h(vec2, 2);
tmp5 = __lasx_xvadd_h(tmp5, vec1);
tmp6 = __lasx_xvsrai_h(vec1, 2);
tmp6 = __lasx_xvsub_h(tmp6, vec2);
tmp7 = __lasx_xvsrai_h(vec0, 2);
tmp7 = __lasx_xvsub_h(vec3, tmp7);
LASX_BUTTERFLY_8_H(tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7,
res0, res1, res2, res3, res4, res5, res6, res7);
LASX_TRANSPOSE8x8_H(res0, res1, res2, res3, res4, res5, res6, res7,
res0, res1, res2, res3, res4, res5, res6, res7);
DUP4_ARG1(__lasx_vext2xv_w_h, res0, res1, res2, res3,
tmp0, tmp1, tmp2, tmp3);
DUP4_ARG1(__lasx_vext2xv_w_h, res4, res5, res6, res7,
tmp4, tmp5, tmp6, tmp7);
vec0 = __lasx_xvadd_w(tmp0, tmp4);
vec1 = __lasx_xvsub_w(tmp0, tmp4);
vec2 = __lasx_xvsrai_w(tmp2, 1);
vec2 = __lasx_xvsub_w(vec2, tmp6);
vec3 = __lasx_xvsrai_w(tmp6, 1);
vec3 = __lasx_xvadd_w(vec3, tmp2);
tmp0 = __lasx_xvadd_w(vec0, vec3);
tmp2 = __lasx_xvadd_w(vec1, vec2);
tmp4 = __lasx_xvsub_w(vec1, vec2);
tmp6 = __lasx_xvsub_w(vec0, vec3);
vec0 = __lasx_xvsrai_w(tmp7, 1);
vec0 = __lasx_xvsub_w(tmp5, vec0);
vec0 = __lasx_xvsub_w(vec0, tmp3);
vec0 = __lasx_xvsub_w(vec0, tmp7);
vec1 = __lasx_xvsrai_w(tmp3, 1);
vec1 = __lasx_xvsub_w(tmp1, vec1);
vec1 = __lasx_xvadd_w(vec1, tmp7);
vec1 = __lasx_xvsub_w(vec1, tmp3);
vec2 = __lasx_xvsrai_w(tmp5, 1);
vec2 = __lasx_xvsub_w(vec2, tmp1);
vec2 = __lasx_xvadd_w(vec2, tmp7);
vec2 = __lasx_xvadd_w(vec2, tmp5);
vec3 = __lasx_xvsrai_w(tmp1, 1);
vec3 = __lasx_xvadd_w(tmp3, vec3);
vec3 = __lasx_xvadd_w(vec3, tmp5);
vec3 = __lasx_xvadd_w(vec3, tmp1);
tmp1 = __lasx_xvsrai_w(vec3, 2);
tmp1 = __lasx_xvadd_w(tmp1, vec0);
tmp3 = __lasx_xvsrai_w(vec2, 2);
tmp3 = __lasx_xvadd_w(tmp3, vec1);
tmp5 = __lasx_xvsrai_w(vec1, 2);
tmp5 = __lasx_xvsub_w(tmp5, vec2);
tmp7 = __lasx_xvsrai_w(vec0, 2);
tmp7 = __lasx_xvsub_w(vec3, tmp7);
LASX_BUTTERFLY_4_W(tmp0, tmp2, tmp5, tmp7, res0, res1, res6, res7);
LASX_BUTTERFLY_4_W(tmp4, tmp6, tmp1, tmp3, res2, res3, res4, res5);
DUP4_ARG2(__lasx_xvsrai_w, res0, 6, res1, 6, res2, 6, res3, 6,
res0, res1, res2, res3);
DUP4_ARG2(__lasx_xvsrai_w, res4, 6, res5, 6, res6, 6, res7, 6,
res4, res5, res6, res7);
DUP4_ARG2(__lasx_xvpickev_h, res1, res0, res3, res2, res5, res4, res7,
res6, res0, res1, res2, res3);
DUP4_ARG2(__lasx_xvpermi_d, res0, 0xd8, res1, 0xd8, res2, 0xd8, res3, 0xd8,
res0, res1, res2, res3);
DUP4_ARG2(__lasx_xvldx, dst, 0, dst, dst_stride, dst, dst_stride_2x,
dst, dst_stride_3x, dst0, dst1, dst2, dst3);
dst += dst_stride_4x;
DUP4_ARG2(__lasx_xvldx, dst, 0, dst, dst_stride, dst, dst_stride_2x,
dst, dst_stride_3x, dst4, dst5, dst6, dst7);
dst -= dst_stride_4x;
DUP4_ARG2(__lasx_xvilvl_b, zero, dst0, zero, dst1, zero, dst2, zero, dst3,
dst0, dst1, dst2, dst3);
DUP4_ARG2(__lasx_xvilvl_b, zero, dst4, zero, dst5, zero, dst6, zero, dst7,
dst4, dst5, dst6, dst7);
DUP4_ARG3(__lasx_xvpermi_q, dst1, dst0, 0x20, dst3, dst2, 0x20, dst5,
dst4, 0x20, dst7, dst6, 0x20, dst0, dst1, dst2, dst3);
res0 = __lasx_xvadd_h(res0, dst0);
res1 = __lasx_xvadd_h(res1, dst1);
res2 = __lasx_xvadd_h(res2, dst2);
res3 = __lasx_xvadd_h(res3, dst3);
DUP4_ARG1(__lasx_xvclip255_h, res0, res1, res2, res3, res0, res1,
res2, res3);
DUP2_ARG2(__lasx_xvpickev_b, res1, res0, res3, res2, res0, res1);
__lasx_xvstelm_d(res0, dst, 0, 0);
__lasx_xvstelm_d(res0, dst + dst_stride, 0, 2);
__lasx_xvstelm_d(res0, dst + dst_stride_2x, 0, 1);
__lasx_xvstelm_d(res0, dst + dst_stride_3x, 0, 3);
dst += dst_stride_4x;
__lasx_xvstelm_d(res1, dst, 0, 0);
__lasx_xvstelm_d(res1, dst + dst_stride, 0, 2);
__lasx_xvstelm_d(res1, dst + dst_stride_2x, 0, 1);
__lasx_xvstelm_d(res1, dst + dst_stride_3x, 0, 3);
}
void ff_h264_idct4x4_addblk_dc_lasx(uint8_t *dst, int16_t *src,
int32_t dst_stride)
{
const int16_t dc = (src[0] + 32) >> 6;
int32_t dst_stride_2x = dst_stride << 1;
int32_t dst_stride_3x = dst_stride_2x + dst_stride;
__m256i pred, out;
__m256i src0, src1, src2, src3;
__m256i input_dc = __lasx_xvreplgr2vr_h(dc);
src[0] = 0;
DUP4_ARG2(__lasx_xvldx, dst, 0, dst, dst_stride, dst, dst_stride_2x,
dst, dst_stride_3x, src0, src1, src2, src3);
DUP2_ARG2(__lasx_xvilvl_w, src1, src0, src3, src2, src0, src1);
pred = __lasx_xvpermi_q(src0, src1, 0x02);
pred = __lasx_xvaddw_h_h_bu(input_dc, pred);
pred = __lasx_xvclip255_h(pred);
out = __lasx_xvpickev_b(pred, pred);
__lasx_xvstelm_w(out, dst, 0, 0);
__lasx_xvstelm_w(out, dst + dst_stride, 0, 1);
__lasx_xvstelm_w(out, dst + dst_stride_2x, 0, 4);
__lasx_xvstelm_w(out, dst + dst_stride_3x, 0, 5);
}
void ff_h264_idct8_dc_addblk_lasx(uint8_t *dst, int16_t *src,
int32_t dst_stride)
{
int32_t dc_val;
int32_t dst_stride_2x = dst_stride << 1;
int32_t dst_stride_4x = dst_stride << 2;
int32_t dst_stride_3x = dst_stride_2x + dst_stride;
__m256i dst0, dst1, dst2, dst3, dst4, dst5, dst6, dst7;
__m256i dc;
dc_val = (src[0] + 32) >> 6;
dc = __lasx_xvreplgr2vr_h(dc_val);
src[0] = 0;
DUP4_ARG2(__lasx_xvldx, dst, 0, dst, dst_stride, dst, dst_stride_2x,
dst, dst_stride_3x, dst0, dst1, dst2, dst3);
dst += dst_stride_4x;
DUP4_ARG2(__lasx_xvldx, dst, 0, dst, dst_stride, dst, dst_stride_2x,
dst, dst_stride_3x, dst4, dst5, dst6, dst7);
dst -= dst_stride_4x;
DUP4_ARG1(__lasx_vext2xv_hu_bu, dst0, dst1, dst2, dst3,
dst0, dst1, dst2, dst3);
DUP4_ARG1(__lasx_vext2xv_hu_bu, dst4, dst5, dst6, dst7,
dst4, dst5, dst6, dst7);
DUP4_ARG3(__lasx_xvpermi_q, dst1, dst0, 0x20, dst3, dst2, 0x20, dst5,
dst4, 0x20, dst7, dst6, 0x20, dst0, dst1, dst2, dst3);
dst0 = __lasx_xvadd_h(dst0, dc);
dst1 = __lasx_xvadd_h(dst1, dc);
dst2 = __lasx_xvadd_h(dst2, dc);
dst3 = __lasx_xvadd_h(dst3, dc);
DUP4_ARG1(__lasx_xvclip255_h, dst0, dst1, dst2, dst3,
dst0, dst1, dst2, dst3);
DUP2_ARG2(__lasx_xvpickev_b, dst1, dst0, dst3, dst2, dst0, dst1);
__lasx_xvstelm_d(dst0, dst, 0, 0);
__lasx_xvstelm_d(dst0, dst + dst_stride, 0, 2);
__lasx_xvstelm_d(dst0, dst + dst_stride_2x, 0, 1);
__lasx_xvstelm_d(dst0, dst + dst_stride_3x, 0, 3);
dst += dst_stride_4x;
__lasx_xvstelm_d(dst1, dst, 0, 0);
__lasx_xvstelm_d(dst1, dst + dst_stride, 0, 2);
__lasx_xvstelm_d(dst1, dst + dst_stride_2x, 0, 1);
__lasx_xvstelm_d(dst1, dst + dst_stride_3x, 0, 3);
}
void ff_h264_idct_add16_lasx(uint8_t *dst,
const int32_t *blk_offset,
int16_t *block, int32_t dst_stride,
const uint8_t nzc[15 * 8])
{
int32_t i;
for (i = 0; i < 16; i++) {
int32_t nnz = nzc[scan8[i]];
if (nnz) {
if (nnz == 1 && ((dctcoef *) block)[i * 16])
ff_h264_idct4x4_addblk_dc_lasx(dst + blk_offset[i],
block + i * 16 * sizeof(pixel),
dst_stride);
else
ff_h264_idct_add_lasx(dst + blk_offset[i],
block + i * 16 * sizeof(pixel),
dst_stride);
}
}
}
void ff_h264_idct8_add4_lasx(uint8_t *dst, const int32_t *blk_offset,
int16_t *block, int32_t dst_stride,
const uint8_t nzc[15 * 8])
{
int32_t cnt;
for (cnt = 0; cnt < 16; cnt += 4) {
int32_t nnz = nzc[scan8[cnt]];
if (nnz) {
if (nnz == 1 && ((dctcoef *) block)[cnt * 16])
ff_h264_idct8_dc_addblk_lasx(dst + blk_offset[cnt],
block + cnt * 16 * sizeof(pixel),
dst_stride);
else
ff_h264_idct8_addblk_lasx(dst + blk_offset[cnt],
block + cnt * 16 * sizeof(pixel),
dst_stride);
}
}
}
void ff_h264_idct_add8_lasx(uint8_t **dst,
const int32_t *blk_offset,
int16_t *block, int32_t dst_stride,
const uint8_t nzc[15 * 8])
{
int32_t i;
for (i = 16; i < 20; i++) {
if (nzc[scan8[i]])
ff_h264_idct_add_lasx(dst[0] + blk_offset[i],
block + i * 16 * sizeof(pixel),
dst_stride);
else if (((dctcoef *) block)[i * 16])
ff_h264_idct4x4_addblk_dc_lasx(dst[0] + blk_offset[i],
block + i * 16 * sizeof(pixel),
dst_stride);
}
for (i = 32; i < 36; i++) {
if (nzc[scan8[i]])
ff_h264_idct_add_lasx(dst[1] + blk_offset[i],
block + i * 16 * sizeof(pixel),
dst_stride);
else if (((dctcoef *) block)[i * 16])
ff_h264_idct4x4_addblk_dc_lasx(dst[1] + blk_offset[i],
block + i * 16 * sizeof(pixel),
dst_stride);
}
}
void ff_h264_idct_add8_422_lasx(uint8_t **dst,
const int32_t *blk_offset,
int16_t *block, int32_t dst_stride,
const uint8_t nzc[15 * 8])
{
int32_t i;
for (i = 16; i < 20; i++) {
if (nzc[scan8[i]])
ff_h264_idct_add_lasx(dst[0] + blk_offset[i],
block + i * 16 * sizeof(pixel),
dst_stride);
else if (((dctcoef *) block)[i * 16])
ff_h264_idct4x4_addblk_dc_lasx(dst[0] + blk_offset[i],
block + i * 16 * sizeof(pixel),
dst_stride);
}
for (i = 32; i < 36; i++) {
if (nzc[scan8[i]])
ff_h264_idct_add_lasx(dst[1] + blk_offset[i],
block + i * 16 * sizeof(pixel),
dst_stride);
else if (((dctcoef *) block)[i * 16])
ff_h264_idct4x4_addblk_dc_lasx(dst[1] + blk_offset[i],
block + i * 16 * sizeof(pixel),
dst_stride);
}
for (i = 20; i < 24; i++) {
if (nzc[scan8[i + 4]])
ff_h264_idct_add_lasx(dst[0] + blk_offset[i + 4],
block + i * 16 * sizeof(pixel),
dst_stride);
else if (((dctcoef *) block)[i * 16])
ff_h264_idct4x4_addblk_dc_lasx(dst[0] + blk_offset[i + 4],
block + i * 16 * sizeof(pixel),
dst_stride);
}
for (i = 36; i < 40; i++) {
if (nzc[scan8[i + 4]])
ff_h264_idct_add_lasx(dst[1] + blk_offset[i + 4],
block + i * 16 * sizeof(pixel),
dst_stride);
else if (((dctcoef *) block)[i * 16])
ff_h264_idct4x4_addblk_dc_lasx(dst[1] + blk_offset[i + 4],
block + i * 16 * sizeof(pixel),
dst_stride);
}
}
void ff_h264_idct_add16_intra_lasx(uint8_t *dst,
const int32_t *blk_offset,
int16_t *block,
int32_t dst_stride,
const uint8_t nzc[15 * 8])
{
int32_t i;
for (i = 0; i < 16; i++) {
if (nzc[scan8[i]])
ff_h264_idct_add_lasx(dst + blk_offset[i],
block + i * 16 * sizeof(pixel), dst_stride);
else if (((dctcoef *) block)[i * 16])
ff_h264_idct4x4_addblk_dc_lasx(dst + blk_offset[i],
block + i * 16 * sizeof(pixel),
dst_stride);
}
}
void ff_h264_deq_idct_luma_dc_lasx(int16_t *dst, int16_t *src,
int32_t de_qval)
{
#define DC_DEST_STRIDE 16
__m256i src0, src1, src2, src3;
__m256i vec0, vec1, vec2, vec3;
__m256i tmp0, tmp1, tmp2, tmp3;
__m256i hres0, hres1, hres2, hres3;
__m256i vres0, vres1, vres2, vres3;
__m256i de_q_vec = __lasx_xvreplgr2vr_w(de_qval);
DUP4_ARG2(__lasx_xvld, src, 0, src, 8, src, 16, src, 24,
src0, src1, src2, src3);
LASX_TRANSPOSE4x4_H(src0, src1, src2, src3, tmp0, tmp1, tmp2, tmp3);
LASX_BUTTERFLY_4_H(tmp0, tmp2, tmp3, tmp1, vec0, vec3, vec2, vec1);
LASX_BUTTERFLY_4_H(vec0, vec1, vec2, vec3, hres0, hres3, hres2, hres1);
LASX_TRANSPOSE4x4_H(hres0, hres1, hres2, hres3,
hres0, hres1, hres2, hres3);
LASX_BUTTERFLY_4_H(hres0, hres1, hres3, hres2, vec0, vec3, vec2, vec1);
LASX_BUTTERFLY_4_H(vec0, vec1, vec2, vec3, vres0, vres1, vres2, vres3);
DUP4_ARG1(__lasx_vext2xv_w_h, vres0, vres1, vres2, vres3,
vres0, vres1, vres2, vres3);
DUP2_ARG3(__lasx_xvpermi_q, vres1, vres0, 0x20, vres3, vres2, 0x20,
vres0, vres1);
vres0 = __lasx_xvmul_w(vres0, de_q_vec);
vres1 = __lasx_xvmul_w(vres1, de_q_vec);
vres0 = __lasx_xvsrari_w(vres0, 8);
vres1 = __lasx_xvsrari_w(vres1, 8);
vec0 = __lasx_xvpickev_h(vres1, vres0);
vec0 = __lasx_xvpermi_d(vec0, 0xd8);
__lasx_xvstelm_h(vec0, dst + 0 * DC_DEST_STRIDE, 0, 0);
__lasx_xvstelm_h(vec0, dst + 2 * DC_DEST_STRIDE, 0, 1);
__lasx_xvstelm_h(vec0, dst + 8 * DC_DEST_STRIDE, 0, 2);
__lasx_xvstelm_h(vec0, dst + 10 * DC_DEST_STRIDE, 0, 3);
__lasx_xvstelm_h(vec0, dst + 1 * DC_DEST_STRIDE, 0, 4);
__lasx_xvstelm_h(vec0, dst + 3 * DC_DEST_STRIDE, 0, 5);
__lasx_xvstelm_h(vec0, dst + 9 * DC_DEST_STRIDE, 0, 6);
__lasx_xvstelm_h(vec0, dst + 11 * DC_DEST_STRIDE, 0, 7);
__lasx_xvstelm_h(vec0, dst + 4 * DC_DEST_STRIDE, 0, 8);
__lasx_xvstelm_h(vec0, dst + 6 * DC_DEST_STRIDE, 0, 9);
__lasx_xvstelm_h(vec0, dst + 12 * DC_DEST_STRIDE, 0, 10);
__lasx_xvstelm_h(vec0, dst + 14 * DC_DEST_STRIDE, 0, 11);
__lasx_xvstelm_h(vec0, dst + 5 * DC_DEST_STRIDE, 0, 12);
__lasx_xvstelm_h(vec0, dst + 7 * DC_DEST_STRIDE, 0, 13);
__lasx_xvstelm_h(vec0, dst + 13 * DC_DEST_STRIDE, 0, 14);
__lasx_xvstelm_h(vec0, dst + 15 * DC_DEST_STRIDE, 0, 15);
#undef DC_DEST_STRIDE
}
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