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/*
* Copyright (C) 2022 Loongson Technology Corporation Limited
* Contributed by Hao Chen(chenhao@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 "swscale_loongarch.h"
#include "libavutil/loongarch/loongson_intrinsics.h"
void planar_rgb_to_uv_lasx(uint8_t *_dstU, uint8_t *_dstV, const uint8_t *src[4],
int width, int32_t *rgb2yuv, void *opq)
{
int i;
uint16_t *dstU = (uint16_t *)_dstU;
uint16_t *dstV = (uint16_t *)_dstV;
int set = 0x4001 << (RGB2YUV_SHIFT - 7);
int len = width - 15;
int32_t tem_ru = rgb2yuv[RU_IDX], tem_gu = rgb2yuv[GU_IDX];
int32_t tem_bu = rgb2yuv[BU_IDX], tem_rv = rgb2yuv[RV_IDX];
int32_t tem_gv = rgb2yuv[GV_IDX], tem_bv = rgb2yuv[BV_IDX];
int shift = RGB2YUV_SHIFT - 6;
const uint8_t *src0 = src[0], *src1 = src[1], *src2 = src[2];
__m256i ru, gu, bu, rv, gv, bv;
__m256i mask = {0x0D0C090805040100, 0x1D1C191815141110,
0x0D0C090805040100, 0x1D1C191815141110};
__m256i temp = __lasx_xvreplgr2vr_w(set);
__m256i sra = __lasx_xvreplgr2vr_w(shift);
ru = __lasx_xvreplgr2vr_w(tem_ru);
gu = __lasx_xvreplgr2vr_w(tem_gu);
bu = __lasx_xvreplgr2vr_w(tem_bu);
rv = __lasx_xvreplgr2vr_w(tem_rv);
gv = __lasx_xvreplgr2vr_w(tem_gv);
bv = __lasx_xvreplgr2vr_w(tem_bv);
for (i = 0; i < len; i += 16) {
__m256i _g, _b, _r;
__m256i g_l, g_h, b_l, b_h, r_l, r_h;
__m256i v_l, v_h, u_l, u_h, u_lh, v_lh;
_g = __lasx_xvldx(src0, i);
_b = __lasx_xvldx(src1, i);
_r = __lasx_xvldx(src2, i);
g_l = __lasx_vext2xv_wu_bu(_g);
b_l = __lasx_vext2xv_wu_bu(_b);
r_l = __lasx_vext2xv_wu_bu(_r);
_g = __lasx_xvpermi_d(_g, 0x01);
_b = __lasx_xvpermi_d(_b, 0x01);
_r = __lasx_xvpermi_d(_r, 0x01);
g_h = __lasx_vext2xv_wu_bu(_g);
b_h = __lasx_vext2xv_wu_bu(_b);
r_h = __lasx_vext2xv_wu_bu(_r);
u_l = __lasx_xvmadd_w(temp, ru, r_l);
u_h = __lasx_xvmadd_w(temp, ru, r_h);
v_l = __lasx_xvmadd_w(temp, rv, r_l);
v_h = __lasx_xvmadd_w(temp, rv, r_h);
u_l = __lasx_xvmadd_w(u_l, gu, g_l);
u_l = __lasx_xvmadd_w(u_l, bu, b_l);
u_h = __lasx_xvmadd_w(u_h, gu, g_h);
u_h = __lasx_xvmadd_w(u_h, bu, b_h);
v_l = __lasx_xvmadd_w(v_l, gv, g_l);
v_l = __lasx_xvmadd_w(v_l, bv, b_l);
v_h = __lasx_xvmadd_w(v_h, gv, g_h);
v_h = __lasx_xvmadd_w(v_h, bv, b_h);
u_l = __lasx_xvsra_w(u_l, sra);
u_h = __lasx_xvsra_w(u_h, sra);
v_l = __lasx_xvsra_w(v_l, sra);
v_h = __lasx_xvsra_w(v_h, sra);
u_lh = __lasx_xvshuf_b(u_h, u_l, mask);
v_lh = __lasx_xvshuf_b(v_h, v_l, mask);
u_lh = __lasx_xvpermi_d(u_lh, 0xD8);
v_lh = __lasx_xvpermi_d(v_lh, 0xD8);
__lasx_xvst(u_lh, (dstU + i), 0);
__lasx_xvst(v_lh, (dstV + i), 0);
}
if (width - i >= 8) {
__m256i _g, _b, _r;
__m256i g_l, b_l, r_l;
__m256i v_l, u_l, u, v;
_g = __lasx_xvldrepl_d((src0 + i), 0);
_b = __lasx_xvldrepl_d((src1 + i), 0);
_r = __lasx_xvldrepl_d((src2 + i), 0);
g_l = __lasx_vext2xv_wu_bu(_g);
b_l = __lasx_vext2xv_wu_bu(_b);
r_l = __lasx_vext2xv_wu_bu(_r);
u_l = __lasx_xvmadd_w(temp, ru, r_l);
v_l = __lasx_xvmadd_w(temp, rv, r_l);
u_l = __lasx_xvmadd_w(u_l, gu, g_l);
u_l = __lasx_xvmadd_w(u_l, bu, b_l);
v_l = __lasx_xvmadd_w(v_l, gv, g_l);
v_l = __lasx_xvmadd_w(v_l, bv, b_l);
u_l = __lasx_xvsra_w(u_l, sra);
v_l = __lasx_xvsra_w(v_l, sra);
u = __lasx_xvshuf_b(u_l, u_l, mask);
v = __lasx_xvshuf_b(v_l, v_l, mask);
__lasx_xvstelm_d(u, (dstU + i), 0, 0);
__lasx_xvstelm_d(u, (dstU + i), 8, 2);
__lasx_xvstelm_d(v, (dstV + i), 0, 0);
__lasx_xvstelm_d(v, (dstV + i), 8, 2);
i += 8;
}
for (; i < width; i++) {
int g = src[0][i];
int b = src[1][i];
int r = src[2][i];
dstU[i] = (tem_ru * r + tem_gu * g + tem_bu * b + set) >> shift;
dstV[i] = (tem_rv * r + tem_gv * g + tem_bv * b + set) >> shift;
}
}
void planar_rgb_to_y_lasx(uint8_t *_dst, const uint8_t *src[4], int width,
int32_t *rgb2yuv, void *opq)
{
int i;
int shift = (RGB2YUV_SHIFT - 6);
int set = 0x801 << (RGB2YUV_SHIFT - 7);
int len = width - 15;
uint16_t *dst = (uint16_t *)_dst;
int32_t tem_ry = rgb2yuv[RY_IDX], tem_gy = rgb2yuv[GY_IDX];
int32_t tem_by = rgb2yuv[BY_IDX];
const uint8_t *src0 = src[0], *src1 = src[1], *src2 = src[2];
__m256i mask = {0x0D0C090805040100, 0x1D1C191815141110,
0x0D0C090805040100, 0x1D1C191815141110};
__m256i temp = __lasx_xvreplgr2vr_w(set);
__m256i sra = __lasx_xvreplgr2vr_w(shift);
__m256i ry = __lasx_xvreplgr2vr_w(tem_ry);
__m256i gy = __lasx_xvreplgr2vr_w(tem_gy);
__m256i by = __lasx_xvreplgr2vr_w(tem_by);
for (i = 0; i < len; i += 16) {
__m256i _g, _b, _r;
__m256i g_l, g_h, b_l, b_h, r_l, r_h;
__m256i y_l, y_h, y_lh;
_g = __lasx_xvldx(src0, i);
_b = __lasx_xvldx(src1, i);
_r = __lasx_xvldx(src2, i);
g_l = __lasx_vext2xv_wu_bu(_g);
b_l = __lasx_vext2xv_wu_bu(_b);
r_l = __lasx_vext2xv_wu_bu(_r);
_g = __lasx_xvpermi_d(_g, 0x01);
_b = __lasx_xvpermi_d(_b, 0x01);
_r = __lasx_xvpermi_d(_r, 0x01);
g_h = __lasx_vext2xv_wu_bu(_g);
b_h = __lasx_vext2xv_wu_bu(_b);
r_h = __lasx_vext2xv_wu_bu(_r);
y_l = __lasx_xvmadd_w(temp, ry, r_l);
y_h = __lasx_xvmadd_w(temp, ry, r_h);
y_l = __lasx_xvmadd_w(y_l, gy, g_l);
y_l = __lasx_xvmadd_w(y_l, by, b_l);
y_h = __lasx_xvmadd_w(y_h, gy, g_h);
y_h = __lasx_xvmadd_w(y_h, by, b_h);
y_l = __lasx_xvsra_w(y_l, sra);
y_h = __lasx_xvsra_w(y_h, sra);
y_lh = __lasx_xvshuf_b(y_h, y_l, mask);
y_lh = __lasx_xvpermi_d(y_lh, 0xD8);
__lasx_xvst(y_lh, (dst + i), 0);
}
if (width - i >= 8) {
__m256i _g, _b, _r;
__m256i g_l, b_l, r_l;
__m256i y_l, y;
_g = __lasx_xvldrepl_d((src0 + i), 0);
_b = __lasx_xvldrepl_d((src1 + i), 0);
_r = __lasx_xvldrepl_d((src2 + i), 0);
g_l = __lasx_vext2xv_wu_bu(_g);
b_l = __lasx_vext2xv_wu_bu(_b);
r_l = __lasx_vext2xv_wu_bu(_r);
y_l = __lasx_xvmadd_w(temp, ry, r_l);
y_l = __lasx_xvmadd_w(y_l, gy, g_l);
y_l = __lasx_xvmadd_w(y_l, by, b_l);
y_l = __lasx_xvsra_w(y_l, sra);
y = __lasx_xvshuf_b(y_l, y_l, mask);
__lasx_xvstelm_d(y, (dst + i), 0, 0);
__lasx_xvstelm_d(y, (dst + i), 8, 2);
i += 8;
}
for (; i < width; i++) {
int g = src[0][i];
int b = src[1][i];
int r = src[2][i];
dst[i] = (tem_ry * r + tem_gy * g + tem_by * b + set) >> shift;
}
}
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