1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
// Copyright 2016 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING 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.
// -----------------------------------------------------------------------------
//
// MSA version of dsp functions
//
// Author(s): Prashant Patil (prashant.patil@imgtec.com)
#include "./dsp.h"
#if defined(WEBP_USE_MSA)
#include "./msa_macro.h"
//------------------------------------------------------------------------------
// Transforms
#define IDCT_1D_W(in0, in1, in2, in3, out0, out1, out2, out3) { \
v4i32 a1_m, b1_m, c1_m, d1_m; \
v4i32 c_tmp1_m, c_tmp2_m, d_tmp1_m, d_tmp2_m; \
const v4i32 cospi8sqrt2minus1 = __msa_fill_w(20091); \
const v4i32 sinpi8sqrt2 = __msa_fill_w(35468); \
\
a1_m = in0 + in2; \
b1_m = in0 - in2; \
c_tmp1_m = (in1 * sinpi8sqrt2) >> 16; \
c_tmp2_m = in3 + ((in3 * cospi8sqrt2minus1) >> 16); \
c1_m = c_tmp1_m - c_tmp2_m; \
d_tmp1_m = in1 + ((in1 * cospi8sqrt2minus1) >> 16); \
d_tmp2_m = (in3 * sinpi8sqrt2) >> 16; \
d1_m = d_tmp1_m + d_tmp2_m; \
BUTTERFLY_4(a1_m, b1_m, c1_m, d1_m, out0, out1, out2, out3); \
}
#define MULT1(a) ((((a) * 20091) >> 16) + (a))
#define MULT2(a) (((a) * 35468) >> 16)
static void TransformOne(const int16_t* in, uint8_t* dst) {
v8i16 input0, input1;
v4i32 in0, in1, in2, in3, hz0, hz1, hz2, hz3, vt0, vt1, vt2, vt3;
v4i32 res0, res1, res2, res3;
const v16i8 zero = { 0 };
v16i8 dest0, dest1, dest2, dest3;
LD_SH2(in, 8, input0, input1);
UNPCK_SH_SW(input0, in0, in1);
UNPCK_SH_SW(input1, in2, in3);
IDCT_1D_W(in0, in1, in2, in3, hz0, hz1, hz2, hz3);
TRANSPOSE4x4_SW_SW(hz0, hz1, hz2, hz3, hz0, hz1, hz2, hz3);
IDCT_1D_W(hz0, hz1, hz2, hz3, vt0, vt1, vt2, vt3);
SRARI_W4_SW(vt0, vt1, vt2, vt3, 3);
TRANSPOSE4x4_SW_SW(vt0, vt1, vt2, vt3, vt0, vt1, vt2, vt3);
LD_SB4(dst, BPS, dest0, dest1, dest2, dest3);
ILVR_B4_SW(zero, dest0, zero, dest1, zero, dest2, zero, dest3,
res0, res1, res2, res3);
ILVR_H4_SW(zero, res0, zero, res1, zero, res2, zero, res3,
res0, res1, res2, res3);
ADD4(res0, vt0, res1, vt1, res2, vt2, res3, vt3, res0, res1, res2, res3);
CLIP_SW4_0_255(res0, res1, res2, res3);
PCKEV_B2_SW(res0, res1, res2, res3, vt0, vt1);
res0 = (v4i32)__msa_pckev_b((v16i8)vt0, (v16i8)vt1);
ST4x4_UB(res0, res0, 3, 2, 1, 0, dst, BPS);
}
static void TransformTwo(const int16_t* in, uint8_t* dst, int do_two) {
TransformOne(in, dst);
if (do_two) {
TransformOne(in + 16, dst + 4);
}
}
static void TransformWHT(const int16_t* in, int16_t* out) {
v8i16 input0, input1;
const v8i16 mask0 = { 0, 1, 2, 3, 8, 9, 10, 11 };
const v8i16 mask1 = { 4, 5, 6, 7, 12, 13, 14, 15 };
const v8i16 mask2 = { 0, 4, 8, 12, 1, 5, 9, 13 };
const v8i16 mask3 = { 3, 7, 11, 15, 2, 6, 10, 14 };
v8i16 tmp0, tmp1, tmp2, tmp3;
v8i16 out0, out1;
LD_SH2(in, 8, input0, input1);
input1 = SLDI_SH(input1, input1, 8);
tmp0 = input0 + input1;
tmp1 = input0 - input1;
VSHF_H2_SH(tmp0, tmp1, tmp0, tmp1, mask0, mask1, tmp2, tmp3);
out0 = tmp2 + tmp3;
out1 = tmp2 - tmp3;
VSHF_H2_SH(out0, out1, out0, out1, mask2, mask3, input0, input1);
tmp0 = input0 + input1;
tmp1 = input0 - input1;
VSHF_H2_SH(tmp0, tmp1, tmp0, tmp1, mask0, mask1, tmp2, tmp3);
tmp0 = tmp2 + tmp3;
tmp1 = tmp2 - tmp3;
ADDVI_H2_SH(tmp0, 3, tmp1, 3, out0, out1);
SRAI_H2_SH(out0, out1, 3);
out[0] = __msa_copy_s_h(out0, 0);
out[16] = __msa_copy_s_h(out0, 4);
out[32] = __msa_copy_s_h(out1, 0);
out[48] = __msa_copy_s_h(out1, 4);
out[64] = __msa_copy_s_h(out0, 1);
out[80] = __msa_copy_s_h(out0, 5);
out[96] = __msa_copy_s_h(out1, 1);
out[112] = __msa_copy_s_h(out1, 5);
out[128] = __msa_copy_s_h(out0, 2);
out[144] = __msa_copy_s_h(out0, 6);
out[160] = __msa_copy_s_h(out1, 2);
out[176] = __msa_copy_s_h(out1, 6);
out[192] = __msa_copy_s_h(out0, 3);
out[208] = __msa_copy_s_h(out0, 7);
out[224] = __msa_copy_s_h(out1, 3);
out[240] = __msa_copy_s_h(out1, 7);
}
static void TransformDC(const int16_t* in, uint8_t* dst) {
const int DC = (in[0] + 4) >> 3;
const v8i16 tmp0 = __msa_fill_h(DC);
ADDBLK_ST4x4_UB(tmp0, tmp0, tmp0, tmp0, dst, BPS);
}
static void TransformAC3(const int16_t* in, uint8_t* dst) {
const int a = in[0] + 4;
const int c4 = MULT2(in[4]);
const int d4 = MULT1(in[4]);
const int in2 = MULT2(in[1]);
const int in3 = MULT1(in[1]);
v4i32 tmp0 = { 0 };
v4i32 out0 = __msa_fill_w(a + d4);
v4i32 out1 = __msa_fill_w(a + c4);
v4i32 out2 = __msa_fill_w(a - c4);
v4i32 out3 = __msa_fill_w(a - d4);
v4i32 res0, res1, res2, res3;
const v4i32 zero = { 0 };
v16u8 dest0, dest1, dest2, dest3;
INSERT_W4_SW(in3, in2, -in2, -in3, tmp0);
ADD4(out0, tmp0, out1, tmp0, out2, tmp0, out3, tmp0,
out0, out1, out2, out3);
SRAI_W4_SW(out0, out1, out2, out3, 3);
LD_UB4(dst, BPS, dest0, dest1, dest2, dest3);
ILVR_B4_SW(zero, dest0, zero, dest1, zero, dest2, zero, dest3,
res0, res1, res2, res3);
ILVR_H4_SW(zero, res0, zero, res1, zero, res2, zero, res3,
res0, res1, res2, res3);
ADD4(res0, out0, res1, out1, res2, out2, res3, out3, res0, res1, res2, res3);
CLIP_SW4_0_255(res0, res1, res2, res3);
PCKEV_B2_SW(res0, res1, res2, res3, out0, out1);
res0 = (v4i32)__msa_pckev_b((v16i8)out0, (v16i8)out1);
ST4x4_UB(res0, res0, 3, 2, 1, 0, dst, BPS);
}
//------------------------------------------------------------------------------
// Entry point
extern void VP8DspInitMSA(void);
WEBP_TSAN_IGNORE_FUNCTION void VP8DspInitMSA(void) {
VP8TransformWHT = TransformWHT;
VP8Transform = TransformTwo;
VP8TransformDC = TransformDC;
VP8TransformAC3 = TransformAC3;
}
#else // !WEBP_USE_MSA
WEBP_DSP_INIT_STUB(VP8DspInitMSA)
#endif // WEBP_USE_MSA
|
