FFmpeg
h264_intrapred_lasx.c
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1 /*
2  * Copyright (c) 2021 Loongson Technology Corporation Limited
3  * Contributed by Hao Chen <chenhao@loongson.cn>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include "libavutil/loongarch/loongson_intrinsics.h"
23 #include "h264_intrapred_lasx.h"
24 
25 #define PRED16X16_PLANE \
26  ptrdiff_t stride_1, stride_2, stride_3, stride_4, stride_5, stride_6; \
27  ptrdiff_t stride_8, stride_15; \
28  int32_t res0, res1, res2, res3, cnt; \
29  uint8_t *src0, *src1; \
30  __m256i reg0, reg1, reg2, reg3, reg4; \
31  __m256i tmp0, tmp1, tmp2, tmp3; \
32  __m256i shuff = {0x0B040A0509060807, 0x0F000E010D020C03, 0, 0}; \
33  __m256i mult = {0x0004000300020001, 0x0008000700060005, 0, 0}; \
34  __m256i int_mult1 = {0x0000000100000000, 0x0000000300000002, \
35  0x0000000500000004, 0x0000000700000006}; \
36  \
37  stride_1 = -stride; \
38  stride_2 = stride << 1; \
39  stride_3 = stride_2 + stride; \
40  stride_4 = stride_2 << 1; \
41  stride_5 = stride_4 + stride; \
42  stride_6 = stride_3 << 1; \
43  stride_8 = stride_4 << 1; \
44  stride_15 = (stride_8 << 1) - stride; \
45  src0 = src - 1; \
46  src1 = src0 + stride_8; \
47  \
48  reg0 = __lasx_xvldx(src0, -stride); \
49  reg1 = __lasx_xvldx(src, (8 - stride)); \
50  reg0 = __lasx_xvilvl_d(reg1, reg0); \
51  reg0 = __lasx_xvshuf_b(reg0, reg0, shuff); \
52  reg0 = __lasx_xvhsubw_hu_bu(reg0, reg0); \
53  reg0 = __lasx_xvmul_h(reg0, mult); \
54  res1 = (src1[0] - src0[stride_6]) + \
55  2 * (src1[stride] - src0[stride_5]) + \
56  3 * (src1[stride_2] - src0[stride_4]) + \
57  4 * (src1[stride_3] - src0[stride_3]) + \
58  5 * (src1[stride_4] - src0[stride_2]) + \
59  6 * (src1[stride_5] - src0[stride]) + \
60  7 * (src1[stride_6] - src0[0]) + \
61  8 * (src0[stride_15] - src0[stride_1]); \
62  reg0 = __lasx_xvhaddw_w_h(reg0, reg0); \
63  reg0 = __lasx_xvhaddw_d_w(reg0, reg0); \
64  reg0 = __lasx_xvhaddw_q_d(reg0, reg0); \
65  res0 = __lasx_xvpickve2gr_w(reg0, 0); \
66 
67 #define PRED16X16_PLANE_END \
68  res2 = (src0[stride_15] + src[15 - stride] + 1) << 4; \
69  res3 = 7 * (res0 + res1); \
70  res2 -= res3; \
71  reg0 = __lasx_xvreplgr2vr_w(res0); \
72  reg1 = __lasx_xvreplgr2vr_w(res1); \
73  reg2 = __lasx_xvreplgr2vr_w(res2); \
74  reg3 = __lasx_xvmul_w(reg0, int_mult1); \
75  reg4 = __lasx_xvslli_w(reg0, 3); \
76  reg4 = __lasx_xvadd_w(reg4, reg3); \
77  for (cnt = 8; cnt--;) { \
78  tmp0 = __lasx_xvadd_w(reg2, reg3); \
79  tmp1 = __lasx_xvadd_w(reg2, reg4); \
80  tmp0 = __lasx_xvssrani_hu_w(tmp1, tmp0, 5); \
81  tmp0 = __lasx_xvpermi_d(tmp0, 0xD8); \
82  reg2 = __lasx_xvadd_w(reg2, reg1); \
83  tmp2 = __lasx_xvadd_w(reg2, reg3); \
84  tmp3 = __lasx_xvadd_w(reg2, reg4); \
85  tmp1 = __lasx_xvssrani_hu_w(tmp3, tmp2, 5); \
86  tmp1 = __lasx_xvpermi_d(tmp1, 0xD8); \
87  tmp0 = __lasx_xvssrani_bu_h(tmp1, tmp0, 0); \
88  reg2 = __lasx_xvadd_w(reg2, reg1); \
89  __lasx_xvstelm_d(tmp0, src, 0, 0); \
90  __lasx_xvstelm_d(tmp0, src, 8, 2); \
91  src += stride; \
92  __lasx_xvstelm_d(tmp0, src, 0, 1); \
93  __lasx_xvstelm_d(tmp0, src, 8, 3); \
94  src += stride; \
95  }
96 
97 
98 void ff_h264_pred16x16_plane_h264_8_lasx(uint8_t *src, ptrdiff_t stride)
99 {
100  PRED16X16_PLANE
101  res0 = (5 * res0 + 32) >> 6;
102  res1 = (5 * res1 + 32) >> 6;
103  PRED16X16_PLANE_END
104 }
105 
106 void ff_h264_pred16x16_plane_rv40_8_lasx(uint8_t *src, ptrdiff_t stride)
107 {
108  PRED16X16_PLANE
109  res0 = (res0 + (res0 >> 2)) >> 4;
110  res1 = (res1 + (res1 >> 2)) >> 4;
111  PRED16X16_PLANE_END
112 }
113 
114 void ff_h264_pred16x16_plane_svq3_8_lasx(uint8_t *src, ptrdiff_t stride)
115 {
116  PRED16X16_PLANE
117  cnt = (5 * (res0/4)) / 16;
118  res0 = (5 * (res1/4)) / 16;
119  res1 = cnt;
120  PRED16X16_PLANE_END
121 }
ff_h264_pred16x16_plane_svq3_8_lasx
void ff_h264_pred16x16_plane_svq3_8_lasx(uint8_t *src, ptrdiff_t stride)
Definition: h264_intrapred_lasx.c:114
PRED16X16_PLANE_END
#define PRED16X16_PLANE_END
Definition: h264_intrapred_lasx.c:67
h264_intrapred_lasx.h
PRED16X16_PLANE
#define PRED16X16_PLANE
Definition: h264_intrapred_lasx.c:25
stride
#define stride
Definition: h264pred_template.c:537
ff_h264_pred16x16_plane_rv40_8_lasx
void ff_h264_pred16x16_plane_rv40_8_lasx(uint8_t *src, ptrdiff_t stride)
Definition: h264_intrapred_lasx.c:106
loongson_intrinsics.h
ff_h264_pred16x16_plane_h264_8_lasx
void ff_h264_pred16x16_plane_h264_8_lasx(uint8_t *src, ptrdiff_t stride)
Definition: h264_intrapred_lasx.c:98
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
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