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
|
// Copyright 2021 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.
// -----------------------------------------------------------------------------
//
// SSE41 variant of methods for lossless decoder
#include "src/dsp/dsp.h"
#if defined(WEBP_USE_SSE41)
#include "src/dsp/common_sse41.h"
#include "src/dsp/lossless.h"
#include "src/dsp/lossless_common.h"
//------------------------------------------------------------------------------
// Color-space conversion functions
static void TransformColorInverse_SSE41(const VP8LMultipliers* const m,
const uint32_t* const src,
int num_pixels, uint32_t* dst) {
// sign-extended multiplying constants, pre-shifted by 5.
#define CST(X) (((int16_t)(m->X << 8)) >> 5) // sign-extend
const __m128i mults_rb = _mm_set1_epi32((uint32_t)CST(green_to_red_) << 16 |
(CST(green_to_blue_) & 0xffff));
const __m128i mults_b2 = _mm_set1_epi32(CST(red_to_blue_));
#undef CST
const __m128i mask_ag = _mm_set1_epi32(0xff00ff00);
const __m128i perm1 = _mm_setr_epi8(-1, 1, -1, 1, -1, 5, -1, 5,
-1, 9, -1, 9, -1, 13, -1, 13);
const __m128i perm2 = _mm_setr_epi8(-1, 2, -1, -1, -1, 6, -1, -1,
-1, 10, -1, -1, -1, 14, -1, -1);
int i;
for (i = 0; i + 4 <= num_pixels; i += 4) {
const __m128i A = _mm_loadu_si128((const __m128i*)(src + i));
const __m128i B = _mm_shuffle_epi8(A, perm1); // argb -> g0g0
const __m128i C = _mm_mulhi_epi16(B, mults_rb);
const __m128i D = _mm_add_epi8(A, C);
const __m128i E = _mm_shuffle_epi8(D, perm2);
const __m128i F = _mm_mulhi_epi16(E, mults_b2);
const __m128i G = _mm_add_epi8(D, F);
const __m128i out = _mm_blendv_epi8(G, A, mask_ag);
_mm_storeu_si128((__m128i*)&dst[i], out);
}
// Fall-back to C-version for left-overs.
if (i != num_pixels) {
VP8LTransformColorInverse_C(m, src + i, num_pixels - i, dst + i);
}
}
//------------------------------------------------------------------------------
#define ARGB_TO_RGB_SSE41 do { \
while (num_pixels >= 16) { \
const __m128i in0 = _mm_loadu_si128(in + 0); \
const __m128i in1 = _mm_loadu_si128(in + 1); \
const __m128i in2 = _mm_loadu_si128(in + 2); \
const __m128i in3 = _mm_loadu_si128(in + 3); \
const __m128i a0 = _mm_shuffle_epi8(in0, perm0); \
const __m128i a1 = _mm_shuffle_epi8(in1, perm1); \
const __m128i a2 = _mm_shuffle_epi8(in2, perm2); \
const __m128i a3 = _mm_shuffle_epi8(in3, perm3); \
const __m128i b0 = _mm_blend_epi16(a0, a1, 0xc0); \
const __m128i b1 = _mm_blend_epi16(a1, a2, 0xf0); \
const __m128i b2 = _mm_blend_epi16(a2, a3, 0xfc); \
_mm_storeu_si128(out + 0, b0); \
_mm_storeu_si128(out + 1, b1); \
_mm_storeu_si128(out + 2, b2); \
in += 4; \
out += 3; \
num_pixels -= 16; \
} \
} while (0)
static void ConvertBGRAToRGB_SSE41(const uint32_t* src, int num_pixels,
uint8_t* dst) {
const __m128i* in = (const __m128i*)src;
__m128i* out = (__m128i*)dst;
const __m128i perm0 = _mm_setr_epi8(2, 1, 0, 6, 5, 4, 10, 9,
8, 14, 13, 12, -1, -1, -1, -1);
const __m128i perm1 = _mm_shuffle_epi32(perm0, 0x39);
const __m128i perm2 = _mm_shuffle_epi32(perm0, 0x4e);
const __m128i perm3 = _mm_shuffle_epi32(perm0, 0x93);
ARGB_TO_RGB_SSE41;
// left-overs
if (num_pixels > 0) {
VP8LConvertBGRAToRGB_C((const uint32_t*)in, num_pixels, (uint8_t*)out);
}
}
static void ConvertBGRAToBGR_SSE41(const uint32_t* src,
int num_pixels, uint8_t* dst) {
const __m128i* in = (const __m128i*)src;
__m128i* out = (__m128i*)dst;
const __m128i perm0 = _mm_setr_epi8(0, 1, 2, 4, 5, 6, 8, 9, 10,
12, 13, 14, -1, -1, -1, -1);
const __m128i perm1 = _mm_shuffle_epi32(perm0, 0x39);
const __m128i perm2 = _mm_shuffle_epi32(perm0, 0x4e);
const __m128i perm3 = _mm_shuffle_epi32(perm0, 0x93);
ARGB_TO_RGB_SSE41;
// left-overs
if (num_pixels > 0) {
VP8LConvertBGRAToBGR_C((const uint32_t*)in, num_pixels, (uint8_t*)out);
}
}
#undef ARGB_TO_RGB_SSE41
//------------------------------------------------------------------------------
// Entry point
extern void VP8LDspInitSSE41(void);
WEBP_TSAN_IGNORE_FUNCTION void VP8LDspInitSSE41(void) {
VP8LTransformColorInverse = TransformColorInverse_SSE41;
VP8LConvertBGRAToRGB = ConvertBGRAToRGB_SSE41;
VP8LConvertBGRAToBGR = ConvertBGRAToBGR_SSE41;
}
#else // !WEBP_USE_SSE41
WEBP_DSP_INIT_STUB(VP8LDspInitSSE41)
#endif // WEBP_USE_SSE41
|
