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
|
/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <errno.h>
#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>
#include <binder/IMemory.h>
#include <surfaceflinger/SurfaceComposerClient.h>
#include <SkImageEncoder.h>
#include <SkBitmap.h>
#include <SkStream.h>
using namespace android;
static void usage()
{
fprintf(stderr,
"usage: screenshot [-hp] [FILENAME]\n"
" -h: this message\n"
" -p: save the file as a png.\n"
"If FILENAME ends with .png it will be saved as a png.\n"
"If FILENAME is not given, the results will be printed to stdout.\n"
);
}
static SkBitmap::Config flinger2skia(PixelFormat f)
{
switch (f) {
case PIXEL_FORMAT_A_8:
case PIXEL_FORMAT_L_8:
return SkBitmap::kA8_Config;
case PIXEL_FORMAT_RGB_565:
return SkBitmap::kRGB_565_Config;
case PIXEL_FORMAT_RGBA_4444:
return SkBitmap::kARGB_4444_Config;
default:
return SkBitmap::kARGB_8888_Config;
}
}
int main(int argc, char** argv)
{
bool png = false;
int c;
while ((c = getopt(argc, argv, "ph")) != -1) {
switch (c) {
case 'p':
png = true;
break;
case '?':
case 'h':
usage();
return 1;
}
}
argc -= optind;
argv += optind;
int fd = -1;
if (argc == 0) {
fd = dup(STDOUT_FILENO);
} else if (argc == 1) {
const char* fn = argv[0];
fd = open(fn, O_WRONLY | O_CREAT | O_TRUNC, 0664);
if (fd == -1) {
fprintf(stderr, "Error opening file: (%d) %s\n", errno, strerror(errno));
return 1;
}
const int len = strlen(fn);
if (len >= 4 && 0 == strcmp(fn+len-4, ".png")) {
png = true;
}
}
if (fd == -1) {
usage();
return 1;
}
ScreenshotClient screenshot;
if (screenshot.update() != NO_ERROR) {
return 0;
}
void const* base = screenshot.getPixels();
uint32_t w = screenshot.getWidth();
uint32_t h = screenshot.getHeight();
uint32_t f = screenshot.getFormat();
if (png) {
SkBitmap b;
b.setConfig(flinger2skia(f), w, h);
b.setPixels((void*)base);
SkDynamicMemoryWStream stream;
SkImageEncoder::EncodeStream(&stream, b,
SkImageEncoder::kPNG_Type, SkImageEncoder::kDefaultQuality);
write(fd, stream.getStream(), stream.getOffset());
} else {
write(fd, &w, 4);
write(fd, &h, 4);
write(fd, &f, 4);
write(fd, base, w*h*4);
}
close(fd);
return 0;
}
|
