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
|
// 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 variant of Image transform methods for lossless encoder.
//
// Authors: Prashant Patil (Prashant.Patil@imgtec.com)
#include "src/dsp/dsp.h"
#if defined(WEBP_USE_MSA)
#include "src/dsp/lossless.h"
#include "src/dsp/msa_macro.h"
#define TRANSFORM_COLOR_8(src0, src1, dst0, dst1, c0, c1, mask0, mask1) do { \
v8i16 g0, g1, t0, t1, t2, t3; \
v4i32 t4, t5; \
VSHF_B2_SH(src0, src0, src1, src1, mask0, mask0, g0, g1); \
DOTP_SB2_SH(g0, g1, c0, c0, t0, t1); \
SRAI_H2_SH(t0, t1, 5); \
t0 = __msa_subv_h((v8i16)src0, t0); \
t1 = __msa_subv_h((v8i16)src1, t1); \
t4 = __msa_srli_w((v4i32)src0, 16); \
t5 = __msa_srli_w((v4i32)src1, 16); \
DOTP_SB2_SH(t4, t5, c1, c1, t2, t3); \
SRAI_H2_SH(t2, t3, 5); \
SUB2(t0, t2, t1, t3, t0, t1); \
VSHF_B2_UB(src0, t0, src1, t1, mask1, mask1, dst0, dst1); \
} while (0)
#define TRANSFORM_COLOR_4(src, dst, c0, c1, mask0, mask1) do { \
const v16i8 g0 = VSHF_SB(src, src, mask0); \
v8i16 t0 = __msa_dotp_s_h(c0, g0); \
v8i16 t1; \
v4i32 t2; \
t0 = SRAI_H(t0, 5); \
t0 = __msa_subv_h((v8i16)src, t0); \
t2 = __msa_srli_w((v4i32)src, 16); \
t1 = __msa_dotp_s_h(c1, (v16i8)t2); \
t1 = SRAI_H(t1, 5); \
t0 = t0 - t1; \
dst = VSHF_UB(src, t0, mask1); \
} while (0)
static void TransformColor_MSA(const VP8LMultipliers* const m, uint32_t* data,
int num_pixels) {
v16u8 src0, dst0;
const v16i8 g2br = (v16i8)__msa_fill_w(m->green_to_blue_ |
(m->green_to_red_ << 16));
const v16i8 r2b = (v16i8)__msa_fill_w(m->red_to_blue_);
const v16u8 mask0 = { 1, 255, 1, 255, 5, 255, 5, 255, 9, 255, 9, 255,
13, 255, 13, 255 };
const v16u8 mask1 = { 16, 1, 18, 3, 20, 5, 22, 7, 24, 9, 26, 11,
28, 13, 30, 15 };
while (num_pixels >= 8) {
v16u8 src1, dst1;
LD_UB2(data, 4, src0, src1);
TRANSFORM_COLOR_8(src0, src1, dst0, dst1, g2br, r2b, mask0, mask1);
ST_UB2(dst0, dst1, data, 4);
data += 8;
num_pixels -= 8;
}
if (num_pixels > 0) {
if (num_pixels >= 4) {
src0 = LD_UB(data);
TRANSFORM_COLOR_4(src0, dst0, g2br, r2b, mask0, mask1);
ST_UB(dst0, data);
data += 4;
num_pixels -= 4;
}
if (num_pixels > 0) {
src0 = LD_UB(data);
TRANSFORM_COLOR_4(src0, dst0, g2br, r2b, mask0, mask1);
if (num_pixels == 3) {
const uint64_t pix_d = __msa_copy_s_d((v2i64)dst0, 0);
const uint32_t pix_w = __msa_copy_s_w((v4i32)dst0, 2);
SD(pix_d, data + 0);
SW(pix_w, data + 2);
} else if (num_pixels == 2) {
const uint64_t pix_d = __msa_copy_s_d((v2i64)dst0, 0);
SD(pix_d, data);
} else {
const uint32_t pix_w = __msa_copy_s_w((v4i32)dst0, 0);
SW(pix_w, data);
}
}
}
}
static void SubtractGreenFromBlueAndRed_MSA(uint32_t* argb_data,
int num_pixels) {
int i;
uint8_t* ptemp_data = (uint8_t*)argb_data;
v16u8 src0, dst0, tmp0;
const v16u8 mask = { 1, 255, 1, 255, 5, 255, 5, 255, 9, 255, 9, 255,
13, 255, 13, 255 };
while (num_pixels >= 8) {
v16u8 src1, dst1, tmp1;
LD_UB2(ptemp_data, 16, src0, src1);
VSHF_B2_UB(src0, src1, src1, src0, mask, mask, tmp0, tmp1);
SUB2(src0, tmp0, src1, tmp1, dst0, dst1);
ST_UB2(dst0, dst1, ptemp_data, 16);
ptemp_data += 8 * 4;
num_pixels -= 8;
}
if (num_pixels > 0) {
if (num_pixels >= 4) {
src0 = LD_UB(ptemp_data);
tmp0 = VSHF_UB(src0, src0, mask);
dst0 = src0 - tmp0;
ST_UB(dst0, ptemp_data);
ptemp_data += 4 * 4;
num_pixels -= 4;
}
for (i = 0; i < num_pixels; i++) {
const uint8_t b = ptemp_data[0];
const uint8_t g = ptemp_data[1];
const uint8_t r = ptemp_data[2];
ptemp_data[0] = (b - g) & 0xff;
ptemp_data[2] = (r - g) & 0xff;
ptemp_data += 4;
}
}
}
//------------------------------------------------------------------------------
// Entry point
extern void VP8LEncDspInitMSA(void);
WEBP_TSAN_IGNORE_FUNCTION void VP8LEncDspInitMSA(void) {
VP8LSubtractGreenFromBlueAndRed = SubtractGreenFromBlueAndRed_MSA;
VP8LTransformColor = TransformColor_MSA;
}
#else // !WEBP_USE_MSA
WEBP_DSP_INIT_STUB(VP8LEncDspInitMSA)
#endif // WEBP_USE_MSA
|
