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
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
/*
* Copyright 2009 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkBitmapProcState.h"
#include "SkColorPriv.h"
#include "SkUtils.h"
#if __ARM_ARCH__ >= 6 && !defined(SK_CPU_BENDIAN)
void SI8_D16_nofilter_DX_arm(
const SkBitmapProcState& s,
const uint32_t* SK_RESTRICT xy,
int count,
uint16_t* SK_RESTRICT colors) __attribute__((optimize("O1")));
void SI8_D16_nofilter_DX_arm(const SkBitmapProcState& s,
const uint32_t* SK_RESTRICT xy,
int count, uint16_t* SK_RESTRICT colors) {
SkASSERT(count > 0 && colors != NULL);
SkASSERT(s.fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask));
SkASSERT(s.fDoFilter == false);
const uint16_t* SK_RESTRICT table = s.fBitmap->getColorTable()->lock16BitCache();
const uint8_t* SK_RESTRICT srcAddr = (const uint8_t*)s.fBitmap->getPixels();
// buffer is y32, x16, x16, x16, x16, x16
// bump srcAddr to the proper row, since we're told Y never changes
SkASSERT((unsigned)xy[0] < (unsigned)s.fBitmap->height());
srcAddr = (const uint8_t*)((const char*)srcAddr +
xy[0] * s.fBitmap->rowBytes());
uint8_t src;
if (1 == s.fBitmap->width()) {
src = srcAddr[0];
uint16_t dstValue = table[src];
sk_memset16(colors, dstValue, count);
} else {
int i;
int count8 = count >> 3;
const uint16_t* SK_RESTRICT xx = (const uint16_t*)(xy + 1);
asm volatile (
"cmp %[count8], #0 \n\t" // compare loop counter with 0
"beq 2f \n\t" // if loop counter == 0, exit
"1: \n\t"
"ldmia %[xx]!, {r5, r7, r9, r11} \n\t" // load ptrs to pixels 0-7
"subs %[count8], %[count8], #1 \n\t" // decrement loop counter
"uxth r4, r5 \n\t" // extract ptr 0
"mov r5, r5, lsr #16 \n\t" // extract ptr 1
"uxth r6, r7 \n\t" // extract ptr 2
"mov r7, r7, lsr #16 \n\t" // extract ptr 3
"ldrb r4, [%[srcAddr], r4] \n\t" // load pixel 0 from image
"uxth r8, r9 \n\t" // extract ptr 4
"ldrb r5, [%[srcAddr], r5] \n\t" // load pixel 1 from image
"mov r9, r9, lsr #16 \n\t" // extract ptr 5
"ldrb r6, [%[srcAddr], r6] \n\t" // load pixel 2 from image
"uxth r10, r11 \n\t" // extract ptr 6
"ldrb r7, [%[srcAddr], r7] \n\t" // load pixel 3 from image
"mov r11, r11, lsr #16 \n\t" // extract ptr 7
"ldrb r8, [%[srcAddr], r8] \n\t" // load pixel 4 from image
"add r4, r4, r4 \n\t" // double pixel 0 for RGB565 lookup
"ldrb r9, [%[srcAddr], r9] \n\t" // load pixel 5 from image
"add r5, r5, r5 \n\t" // double pixel 1 for RGB565 lookup
"ldrb r10, [%[srcAddr], r10] \n\t" // load pixel 6 from image
"add r6, r6, r6 \n\t" // double pixel 2 for RGB565 lookup
"ldrb r11, [%[srcAddr], r11] \n\t" // load pixel 7 from image
"add r7, r7, r7 \n\t" // double pixel 3 for RGB565 lookup
"ldrh r4, [%[table], r4] \n\t" // load pixel 0 RGB565 from colmap
"add r8, r8, r8 \n\t" // double pixel 4 for RGB565 lookup
"ldrh r5, [%[table], r5] \n\t" // load pixel 1 RGB565 from colmap
"add r9, r9, r9 \n\t" // double pixel 5 for RGB565 lookup
"ldrh r6, [%[table], r6] \n\t" // load pixel 2 RGB565 from colmap
"add r10, r10, r10 \n\t" // double pixel 6 for RGB565 lookup
"ldrh r7, [%[table], r7] \n\t" // load pixel 3 RGB565 from colmap
"add r11, r11, r11 \n\t" // double pixel 7 for RGB565 lookup
"ldrh r8, [%[table], r8] \n\t" // load pixel 4 RGB565 from colmap
"ldrh r9, [%[table], r9] \n\t" // load pixel 5 RGB565 from colmap
"ldrh r10, [%[table], r10] \n\t" // load pixel 6 RGB565 from colmap
"ldrh r11, [%[table], r11] \n\t" // load pixel 7 RGB565 from colmap
"pkhbt r5, r4, r5, lsl #16 \n\t" // pack pixels 0 and 1
"pkhbt r6, r6, r7, lsl #16 \n\t" // pack pixels 2 and 3
"pkhbt r8, r8, r9, lsl #16 \n\t" // pack pixels 4 and 5
"pkhbt r10, r10, r11, lsl #16 \n\t" // pack pixels 6 and 7
"stmia %[colors]!, {r5, r6, r8, r10} \n\t" // store last 8 pixels
"bgt 1b \n\t" // loop if counter > 0
"2: \n\t"
: [xx] "+r" (xx), [count8] "+r" (count8), [colors] "+r" (colors)
: [table] "r" (table), [srcAddr] "r" (srcAddr)
: "memory", "cc", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11"
);
for (i = (count & 7); i > 0; --i) {
src = srcAddr[*xx++]; *colors++ = table[src];
}
}
s.fBitmap->getColorTable()->unlock16BitCache();
}
void SI8_opaque_D32_nofilter_DX_arm(
const SkBitmapProcState& s,
const uint32_t* SK_RESTRICT xy,
int count,
SkPMColor* SK_RESTRICT colors) __attribute__((optimize("O1")));
void SI8_opaque_D32_nofilter_DX_arm(const SkBitmapProcState& s,
const uint32_t* SK_RESTRICT xy,
int count, SkPMColor* SK_RESTRICT colors) {
SkASSERT(count > 0 && colors != NULL);
SkASSERT(s.fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask));
SkASSERT(s.fDoFilter == false);
const SkPMColor* SK_RESTRICT table = s.fBitmap->getColorTable()->lockColors();
const uint8_t* SK_RESTRICT srcAddr = (const uint8_t*)s.fBitmap->getPixels();
// buffer is y32, x16, x16, x16, x16, x16
// bump srcAddr to the proper row, since we're told Y never changes
SkASSERT((unsigned)xy[0] < (unsigned)s.fBitmap->height());
srcAddr = (const uint8_t*)((const char*)srcAddr + xy[0] * s.fBitmap->rowBytes());
if (1 == s.fBitmap->width()) {
uint8_t src = srcAddr[0];
SkPMColor dstValue = table[src];
sk_memset32(colors, dstValue, count);
} else {
const uint16_t* xx = (const uint16_t*)(xy + 1);
asm volatile (
"subs %[count], %[count], #8 \n\t" // decrement count by 8, set flags
"blt 2f \n\t" // if count < 0, branch to singles
"1: \n\t" // eights loop
"ldmia %[xx]!, {r5, r7, r9, r11} \n\t" // load ptrs to pixels 0-7
"uxth r4, r5 \n\t" // extract ptr 0
"mov r5, r5, lsr #16 \n\t" // extract ptr 1
"uxth r6, r7 \n\t" // extract ptr 2
"mov r7, r7, lsr #16 \n\t" // extract ptr 3
"ldrb r4, [%[srcAddr], r4] \n\t" // load pixel 0 from image
"uxth r8, r9 \n\t" // extract ptr 4
"ldrb r5, [%[srcAddr], r5] \n\t" // load pixel 1 from image
"mov r9, r9, lsr #16 \n\t" // extract ptr 5
"ldrb r6, [%[srcAddr], r6] \n\t" // load pixel 2 from image
"uxth r10, r11 \n\t" // extract ptr 6
"ldrb r7, [%[srcAddr], r7] \n\t" // load pixel 3 from image
"mov r11, r11, lsr #16 \n\t" // extract ptr 7
"ldrb r8, [%[srcAddr], r8] \n\t" // load pixel 4 from image
"ldrb r9, [%[srcAddr], r9] \n\t" // load pixel 5 from image
"ldrb r10, [%[srcAddr], r10] \n\t" // load pixel 6 from image
"ldrb r11, [%[srcAddr], r11] \n\t" // load pixel 7 from image
"ldr r4, [%[table], r4, lsl #2] \n\t" // load pixel 0 SkPMColor from colmap
"ldr r5, [%[table], r5, lsl #2] \n\t" // load pixel 1 SkPMColor from colmap
"ldr r6, [%[table], r6, lsl #2] \n\t" // load pixel 2 SkPMColor from colmap
"ldr r7, [%[table], r7, lsl #2] \n\t" // load pixel 3 SkPMColor from colmap
"ldr r8, [%[table], r8, lsl #2] \n\t" // load pixel 4 SkPMColor from colmap
"ldr r9, [%[table], r9, lsl #2] \n\t" // load pixel 5 SkPMColor from colmap
"ldr r10, [%[table], r10, lsl #2] \n\t" // load pixel 6 SkPMColor from colmap
"ldr r11, [%[table], r11, lsl #2] \n\t" // load pixel 7 SkPMColor from colmap
"subs %[count], %[count], #8 \n\t" // decrement loop counter
"stmia %[colors]!, {r4-r11} \n\t" // store 8 pixels
"bge 1b \n\t" // loop if counter >= 0
"2: \n\t"
"adds %[count], %[count], #8 \n\t" // fix up counter, set flags
"beq 4f \n\t" // if count == 0, branch to exit
"3: \n\t" // singles loop
"ldrh r4, [%[xx]], #2 \n\t" // load pixel ptr
"subs %[count], %[count], #1 \n\t" // decrement loop counter
"ldrb r5, [%[srcAddr], r4] \n\t" // load pixel from image
"ldr r6, [%[table], r5, lsl #2] \n\t" // load SkPMColor from colmap
"str r6, [%[colors]], #4 \n\t" // store pixel, update ptr
"bne 3b \n\t" // loop if counter != 0
"4: \n\t" // exit
: [xx] "+r" (xx), [count] "+r" (count), [colors] "+r" (colors)
: [table] "r" (table), [srcAddr] "r" (srcAddr)
: "memory", "cc", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11"
);
}
s.fBitmap->getColorTable()->unlockColors(false);
}
#endif //__ARM_ARCH__ >= 6 && !defined(SK_CPU_BENDIAN)
///////////////////////////////////////////////////////////////////////////////
/* If we replace a sampleproc, then we null-out the associated shaderproc,
otherwise the shader won't even look at the matrix/sampler
*/
void SkBitmapProcState::platformProcs() {
bool doFilter = fDoFilter;
bool isOpaque = 256 == fAlphaScale;
bool justDx = false;
if (fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)) {
justDx = true;
}
switch (fBitmap->config()) {
case SkBitmap::kIndex8_Config:
#if __ARM_ARCH__ >= 6 && !defined(SK_CPU_BENDIAN)
if (justDx && !doFilter) {
#if 0 /* crashing on android device */
fSampleProc16 = SI8_D16_nofilter_DX_arm;
fShaderProc16 = NULL;
#endif
if (isOpaque) {
// this one is only very slighty faster than the C version
fSampleProc32 = SI8_opaque_D32_nofilter_DX_arm;
fShaderProc32 = NULL;
}
}
#endif
break;
default:
break;
}
}
|
