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FFmpeg/libswscale/loongarch/yuv2rgb_lasx.c

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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"
#define YUV2RGB_LOAD_COE \
/* Load x_offset */ \
__m256i y_offset = __lasx_xvreplgr2vr_d(c->yOffset); \
__m256i u_offset = __lasx_xvreplgr2vr_d(c->uOffset); \
__m256i v_offset = __lasx_xvreplgr2vr_d(c->vOffset); \
/* Load x_coeff */ \
__m256i ug_coeff = __lasx_xvreplgr2vr_d(c->ugCoeff); \
__m256i vg_coeff = __lasx_xvreplgr2vr_d(c->vgCoeff); \
__m256i y_coeff = __lasx_xvreplgr2vr_d(c->yCoeff); \
__m256i ub_coeff = __lasx_xvreplgr2vr_d(c->ubCoeff); \
__m256i vr_coeff = __lasx_xvreplgr2vr_d(c->vrCoeff); \
#define LOAD_YUV_16 \
m_y1 = __lasx_xvld(py_1, 0); \
m_y2 = __lasx_xvld(py_2, 0); \
m_u = __lasx_xvldrepl_d(pu, 0); \
m_v = __lasx_xvldrepl_d(pv, 0); \
m_u = __lasx_xvilvl_b(m_u, m_u); \
m_v = __lasx_xvilvl_b(m_v, m_v); \
DUP4_ARG1(__lasx_vext2xv_hu_bu, m_y1, m_y2, m_u, m_v, \
m_y1, m_y2, m_u, m_v); \
/* YUV2RGB method
* The conversion method is as follows:
* R = Y' * y_coeff + V' * vr_coeff
* G = Y' * y_coeff + V' * vg_coeff + U' * ug_coeff
* B = Y' * y_coeff + U' * ub_coeff
*
* where X' = X * 8 - x_offset
*
*/
#define YUV2RGB \
m_y1 = __lasx_xvslli_h(m_y1, 3); \
m_y2 = __lasx_xvslli_h(m_y2, 3); \
m_u = __lasx_xvslli_h(m_u, 3); \
m_v = __lasx_xvslli_h(m_v, 3); \
m_y1 = __lasx_xvsub_h(m_y1, y_offset); \
m_y2 = __lasx_xvsub_h(m_y2, y_offset); \
m_u = __lasx_xvsub_h(m_u, u_offset); \
m_v = __lasx_xvsub_h(m_v, v_offset); \
y_1 = __lasx_xvmuh_h(m_y1, y_coeff); \
y_2 = __lasx_xvmuh_h(m_y2, y_coeff); \
u2g = __lasx_xvmuh_h(m_u, ug_coeff); \
u2b = __lasx_xvmuh_h(m_u, ub_coeff); \
v2r = __lasx_xvmuh_h(m_v, vr_coeff); \
v2g = __lasx_xvmuh_h(m_v, vg_coeff); \
r1 = __lasx_xvsadd_h(y_1, v2r); \
v2g = __lasx_xvsadd_h(v2g, u2g); \
g1 = __lasx_xvsadd_h(y_1, v2g); \
b1 = __lasx_xvsadd_h(y_1, u2b); \
r2 = __lasx_xvsadd_h(y_2, v2r); \
g2 = __lasx_xvsadd_h(y_2, v2g); \
b2 = __lasx_xvsadd_h(y_2, u2b); \
DUP4_ARG1(__lasx_xvclip255_h, r1, g1, b1, r2, r1, g1, b1, r2); \
DUP2_ARG1(__lasx_xvclip255_h, g2, b2, g2, b2); \
#define YUV2RGB_RES \
m_y1 = __lasx_xvldrepl_d(py_1, 0); \
m_y2 = __lasx_xvldrepl_d(py_2, 0); \
m_u = __lasx_xvldrepl_w(pu, 0); \
m_v = __lasx_xvldrepl_w(pv, 0); \
m_y1 = __lasx_xvilvl_d(m_y2, m_y1); \
m_u = __lasx_xvilvl_b(m_u, m_u); \
m_v = __lasx_xvilvl_b(m_v, m_v); \
m_y1 = __lasx_vext2xv_hu_bu(m_y1); \
m_u = __lasx_vext2xv_hu_bu(m_u); \
m_v = __lasx_vext2xv_hu_bu(m_v); \
m_y1 = __lasx_xvslli_h(m_y1, 3); \
m_u = __lasx_xvslli_h(m_u, 3); \
m_v = __lasx_xvslli_h(m_v, 3); \
m_y1 = __lasx_xvsub_h(m_y1, y_offset); \
m_u = __lasx_xvsub_h(m_u, u_offset); \
m_v = __lasx_xvsub_h(m_v, v_offset); \
y_1 = __lasx_xvmuh_h(m_y1, y_coeff); \
u2g = __lasx_xvmuh_h(m_u, ug_coeff); \
u2b = __lasx_xvmuh_h(m_u, ub_coeff); \
v2r = __lasx_xvmuh_h(m_v, vr_coeff); \
v2g = __lasx_xvmuh_h(m_v, vg_coeff); \
r1 = __lasx_xvsadd_h(y_1, v2r); \
v2g = __lasx_xvsadd_h(v2g, u2g); \
g1 = __lasx_xvsadd_h(y_1, v2g); \
b1 = __lasx_xvsadd_h(y_1, u2b); \
r1 = __lasx_xvclip255_h(r1); \
g1 = __lasx_xvclip255_h(g1); \
b1 = __lasx_xvclip255_h(b1); \
#define RGB_PACK(r, g, b, rgb_l, rgb_h) \
{ \
__m256i rg; \
rg = __lasx_xvpackev_b(g, r); \
DUP2_ARG3(__lasx_xvshuf_b, b, rg, shuf2, b, rg, shuf3, rgb_l, rgb_h); \
}
#define RGB32_PACK(a, r, g, b, rgb_l, rgb_h) \
{ \
__m256i ra, bg, tmp0, tmp1; \
ra = __lasx_xvpackev_b(r, a); \
bg = __lasx_xvpackev_b(b, g); \
tmp0 = __lasx_xvilvl_h(bg, ra); \
tmp1 = __lasx_xvilvh_h(bg, ra); \
rgb_l = __lasx_xvpermi_q(tmp1, tmp0, 0x20); \
rgb_h = __lasx_xvpermi_q(tmp1, tmp0, 0x31); \
}
#define RGB_STORE_RES(rgb_l, rgb_h, image_1, image_2) \
{ \
__lasx_xvstelm_d(rgb_l, image_1, 0, 0); \
__lasx_xvstelm_d(rgb_l, image_1, 8, 1); \
__lasx_xvstelm_d(rgb_h, image_1, 16, 0); \
__lasx_xvstelm_d(rgb_l, image_2, 0, 2); \
__lasx_xvstelm_d(rgb_l, image_2, 8, 3); \
__lasx_xvstelm_d(rgb_h, image_2, 16, 2); \
}
#define RGB_STORE(rgb_l, rgb_h, image) \
{ \
__lasx_xvstelm_d(rgb_l, image, 0, 0); \
__lasx_xvstelm_d(rgb_l, image, 8, 1); \
__lasx_xvstelm_d(rgb_h, image, 16, 0); \
__lasx_xvstelm_d(rgb_l, image, 24, 2); \
__lasx_xvstelm_d(rgb_l, image, 32, 3); \
__lasx_xvstelm_d(rgb_h, image, 40, 2); \
}
#define RGB32_STORE(rgb_l, rgb_h, image) \
{ \
__lasx_xvst(rgb_l, image, 0); \
__lasx_xvst(rgb_h, image, 32); \
}
#define RGB32_STORE_RES(rgb_l, rgb_h, image_1, image_2) \
{ \
__lasx_xvst(rgb_l, image_1, 0); \
__lasx_xvst(rgb_h, image_2, 0); \
}
#define YUV2RGBFUNC(func_name, dst_type, alpha) \
int func_name(SwsContext *c, const uint8_t *src[], \
int srcStride[], int srcSliceY, int srcSliceH, \
uint8_t *dst[], int dstStride[]) \
{ \
int x, y, h_size, vshift, res; \
__m256i m_y1, m_y2, m_u, m_v; \
__m256i y_1, y_2, u2g, v2g, u2b, v2r, rgb1_l, rgb1_h; \
__m256i rgb2_l, rgb2_h, r1, g1, b1, r2, g2, b2; \
__m256i shuf2 = {0x0504120302100100, 0x0A18090816070614, \
0x0504120302100100, 0x0A18090816070614}; \
__m256i shuf3 = {0x1E0F0E1C0D0C1A0B, 0x0101010101010101, \
0x1E0F0E1C0D0C1A0B, 0x0101010101010101}; \
YUV2RGB_LOAD_COE \
y = (c->dstW + 7) & ~7; \
h_size = y >> 4; \
res = y & 15; \
\
vshift = c->srcFormat != AV_PIX_FMT_YUV422P; \
for (y = 0; y < srcSliceH; y += 2) { \
dst_type *image1 = (dst_type *)(dst[0] + (y + srcSliceY) * dstStride[0]);\
dst_type *image2 = (dst_type *)(image1 + dstStride[0]);\
const uint8_t *py_1 = src[0] + y * srcStride[0]; \
const uint8_t *py_2 = py_1 + srcStride[0]; \
const uint8_t *pu = src[1] + (y >> vshift) * srcStride[1]; \
const uint8_t *pv = src[2] + (y >> vshift) * srcStride[2]; \
for(x = 0; x < h_size; x++) { \
#define YUV2RGBFUNC32(func_name, dst_type, alpha) \
int func_name(SwsContext *c, const uint8_t *src[], \
int srcStride[], int srcSliceY, int srcSliceH, \
uint8_t *dst[], int dstStride[]) \
{ \
int x, y, h_size, vshift, res; \
__m256i m_y1, m_y2, m_u, m_v; \
__m256i y_1, y_2, u2g, v2g, u2b, v2r, rgb1_l, rgb1_h; \
__m256i rgb2_l, rgb2_h, r1, g1, b1, r2, g2, b2; \
__m256i a = __lasx_xvldi(0xFF); \
\
YUV2RGB_LOAD_COE \
y = (c->dstW + 7) & ~7; \
h_size = y >> 4; \
res = y & 15; \
\
vshift = c->srcFormat != AV_PIX_FMT_YUV422P; \
for (y = 0; y < srcSliceH; y += 2) { \
int yd = y + srcSliceY; \
dst_type av_unused *r, *g, *b; \
dst_type *image1 = (dst_type *)(dst[0] + (yd) * dstStride[0]); \
dst_type *image2 = (dst_type *)(dst[0] + (yd + 1) * dstStride[0]); \
const uint8_t *py_1 = src[0] + y * srcStride[0]; \
const uint8_t *py_2 = py_1 + srcStride[0]; \
const uint8_t *pu = src[1] + (y >> vshift) * srcStride[1]; \
const uint8_t *pv = src[2] + (y >> vshift) * srcStride[2]; \
for(x = 0; x < h_size; x++) { \
#define DEALYUV2RGBREMAIN \
py_1 += 16; \
py_2 += 16; \
pu += 8; \
pv += 8; \
image1 += 48; \
image2 += 48; \
} \
if (res) { \
#define DEALYUV2RGBREMAIN32 \
py_1 += 16; \
py_2 += 16; \
pu += 8; \
pv += 8; \
image1 += 16; \
image2 += 16; \
} \
if (res) { \
#define END_FUNC() \
} \
} \
return srcSliceH; \
}
YUV2RGBFUNC(yuv420_rgb24_lasx, uint8_t, 0)
LOAD_YUV_16
YUV2RGB
RGB_PACK(r1, g1, b1, rgb1_l, rgb1_h);
RGB_PACK(r2, g2, b2, rgb2_l, rgb2_h);
RGB_STORE(rgb1_l, rgb1_h, image1);
RGB_STORE(rgb2_l, rgb2_h, image2);
DEALYUV2RGBREMAIN
YUV2RGB_RES
RGB_PACK(r1, g1, b1, rgb1_l, rgb1_h);
RGB_STORE_RES(rgb1_l, rgb1_h, image1, image2);
END_FUNC()
YUV2RGBFUNC(yuv420_bgr24_lasx, uint8_t, 0)
LOAD_YUV_16
YUV2RGB
RGB_PACK(b1, g1, r1, rgb1_l, rgb1_h);
RGB_PACK(b2, g2, r2, rgb2_l, rgb2_h);
RGB_STORE(rgb1_l, rgb1_h, image1);
RGB_STORE(rgb2_l, rgb2_h, image2);
DEALYUV2RGBREMAIN
YUV2RGB_RES
RGB_PACK(b1, g1, r1, rgb1_l, rgb1_h);
RGB_STORE_RES(rgb1_l, rgb1_h, image1, image2);
END_FUNC()
YUV2RGBFUNC32(yuv420_rgba32_lasx, uint32_t, 0)
LOAD_YUV_16
YUV2RGB
RGB32_PACK(r1, g1, b1, a, rgb1_l, rgb1_h);
RGB32_PACK(r2, g2, b2, a, rgb2_l, rgb2_h);
RGB32_STORE(rgb1_l, rgb1_h, image1);
RGB32_STORE(rgb2_l, rgb2_h, image2);
DEALYUV2RGBREMAIN32
YUV2RGB_RES
RGB32_PACK(r1, g1, b1, a, rgb1_l, rgb1_h);
RGB32_STORE_RES(rgb1_l, rgb1_h, image1, image2);
END_FUNC()
YUV2RGBFUNC32(yuv420_bgra32_lasx, uint32_t, 0)
LOAD_YUV_16
YUV2RGB
RGB32_PACK(b1, g1, r1, a, rgb1_l, rgb1_h);
RGB32_PACK(b2, g2, r2, a, rgb2_l, rgb2_h);
RGB32_STORE(rgb1_l, rgb1_h, image1);
RGB32_STORE(rgb2_l, rgb2_h, image2);
DEALYUV2RGBREMAIN32
YUV2RGB_RES
RGB32_PACK(b1, g1, r1, a, rgb1_l, rgb1_h);
RGB32_STORE_RES(rgb1_l, rgb1_h, image1, image2);
END_FUNC()
YUV2RGBFUNC32(yuv420_argb32_lasx, uint32_t, 0)
LOAD_YUV_16
YUV2RGB
RGB32_PACK(a, r1, g1, b1, rgb1_l, rgb1_h);
RGB32_PACK(a, r2, g2, b2, rgb2_l, rgb2_h);
RGB32_STORE(rgb1_l, rgb1_h, image1);
RGB32_STORE(rgb2_l, rgb2_h, image2);
DEALYUV2RGBREMAIN32
YUV2RGB_RES
RGB32_PACK(a, r1, g1, b1, rgb1_l, rgb1_h);
RGB32_STORE_RES(rgb1_l, rgb1_h, image1, image2);
END_FUNC()
YUV2RGBFUNC32(yuv420_abgr32_lasx, uint32_t, 0)
LOAD_YUV_16
YUV2RGB
RGB32_PACK(a, b1, g1, r1, rgb1_l, rgb1_h);
RGB32_PACK(a, b2, g2, r2, rgb2_l, rgb2_h);
RGB32_STORE(rgb1_l, rgb1_h, image1);
RGB32_STORE(rgb2_l, rgb2_h, image2);
DEALYUV2RGBREMAIN32
YUV2RGB_RES
RGB32_PACK(a, b1, g1, r1, rgb1_l, rgb1_h);
RGB32_STORE_RES(rgb1_l, rgb1_h, image1, image2);
END_FUNC()