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
|
#ifndef SkColor_opts_neon_DEFINED
#define SkColor_opts_neon_DEFINED
#include "SkTypes.h"
#include <arm_neon.h>
#define NEON_A (SK_A32_SHIFT / 8)
#define NEON_R (SK_R32_SHIFT / 8)
#define NEON_G (SK_G32_SHIFT / 8)
#define NEON_B (SK_B32_SHIFT / 8)
static inline uint16x8_t SkAlpha255To256_neon8(uint8x8_t alpha) {
return vaddw_u8(vdupq_n_u16(1), alpha);
}
static inline uint8x8_t SkAlphaMul_neon8(uint8x8_t color, uint16x8_t scale) {
return vshrn_n_u16(vmovl_u8(color) * scale, 8);
}
static inline uint8x8x4_t SkAlphaMulQ_neon8(uint8x8x4_t color, uint16x8_t scale) {
uint8x8x4_t ret;
ret.val[NEON_A] = SkAlphaMul_neon8(color.val[NEON_A], scale);
ret.val[NEON_R] = SkAlphaMul_neon8(color.val[NEON_R], scale);
ret.val[NEON_G] = SkAlphaMul_neon8(color.val[NEON_G], scale);
ret.val[NEON_B] = SkAlphaMul_neon8(color.val[NEON_B], scale);
return ret;
}
/* This function expands 8 pixels from RGB565 (R, G, B from high to low) to
* SkPMColor (all possible configurations supported) in the exact same way as
* SkPixel16ToPixel32.
*/
static inline uint8x8x4_t SkPixel16ToPixel32_neon8(uint16x8_t vsrc) {
uint8x8x4_t ret;
uint8x8_t vr, vg, vb;
vr = vmovn_u16(vshrq_n_u16(vsrc, SK_R16_SHIFT));
vg = vmovn_u16(vshrq_n_u16(vshlq_n_u16(vsrc, SK_R16_BITS), SK_R16_BITS + SK_B16_BITS));
vb = vmovn_u16(vsrc & vdupq_n_u16(SK_B16_MASK));
ret.val[NEON_A] = vdup_n_u8(0xFF);
ret.val[NEON_R] = vshl_n_u8(vr, 8 - SK_R16_BITS) | vshr_n_u8(vr, 2 * SK_R16_BITS - 8);
ret.val[NEON_G] = vshl_n_u8(vg, 8 - SK_G16_BITS) | vshr_n_u8(vg, 2 * SK_G16_BITS - 8);
ret.val[NEON_B] = vshl_n_u8(vb, 8 - SK_B16_BITS) | vshr_n_u8(vb, 2 * SK_B16_BITS - 8);
return ret;
}
/* This function packs 8 pixels from SkPMColor (all possible configurations
* supported) to RGB565 (R, G, B from high to low) in the exact same way as
* SkPixel32ToPixel16.
*/
static inline uint16x8_t SkPixel32ToPixel16_neon8(uint8x8x4_t vsrc) {
uint16x8_t ret;
ret = vshll_n_u8(vsrc.val[NEON_R], 8);
ret = vsriq_n_u16(ret, vshll_n_u8(vsrc.val[NEON_G], 8), SK_R16_BITS);
ret = vsriq_n_u16(ret, vshll_n_u8(vsrc.val[NEON_B], 8), SK_R16_BITS + SK_G16_BITS);
return ret;
}
#endif /* #ifndef SkColor_opts_neon_DEFINED */
|
