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
|
/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkBitmap.h"
#include "SkColorPriv.h"
#include "SkCommandLineFlags.h"
#include "SkData.h"
#include "SkForceLinking.h"
#include "SkGraphics.h"
#include "SkImageDecoder.h"
#include "SkImageEncoder.h"
#include "SkOSFile.h"
#include "SkRandom.h"
#include "SkStream.h"
#include "SkTArray.h"
#include "SkTemplates.h"
__SK_FORCE_IMAGE_DECODER_LINKING;
DEFINE_string2(readPath, r, "", "Folder(s) and files to decode images. Required.");
struct Format {
SkImageEncoder::Type fType;
SkImageDecoder::Format fFormat;
const char* fSuffix;
};
static const Format gFormats[] = {
{ SkImageEncoder::kBMP_Type, SkImageDecoder::kBMP_Format, ".bmp" },
{ SkImageEncoder::kGIF_Type, SkImageDecoder::kGIF_Format, ".gif" },
{ SkImageEncoder::kICO_Type, SkImageDecoder::kICO_Format, ".ico" },
{ SkImageEncoder::kJPEG_Type, SkImageDecoder::kJPEG_Format, ".jpg" },
{ SkImageEncoder::kPNG_Type, SkImageDecoder::kPNG_Format, ".png" },
{ SkImageEncoder::kWBMP_Type, SkImageDecoder::kWBMP_Format, ".wbmp" },
{ SkImageEncoder::kWEBP_Type, SkImageDecoder::kWEBP_Format, ".webp" }
};
SkISize opaqueSize(const SkBitmap& bm) {
int width = 1;
int height = 1;
for (int y = 0 ; y < bm.height(); y++) {
for (int x = 0 ; x < bm.width(); x++) {
SkColor color = bm.getColor(x, y);
if (SkColorGetA(color) != 0) {
height = y + 1;
width = width > (x + 1) ? width : x + 1;
}
}
}
return SkISize::Make(width, height);
}
static void setup_bitmap(SkBitmap* bitmap, int width, int height) {
bitmap->setConfig(SkBitmap::kARGB_8888_Config, width, height);
bitmap->allocPixels();
}
static bool write_bitmap(const char outName[], const SkBitmap& bm) {
SkISize size = opaqueSize(bm);
SkBitmap dst;
setup_bitmap(&dst, size.width(), size.height());
for (int y = 0 ; y < dst.height(); y++) {
for (int x = 0 ; x < dst.width(); x++) {
SkColor color = bm.getColor(x, y);
if (SkColorGetA(color) != 0xff) {
int a = SkColorGetA(color);
int r = SkColorGetR(color);
int g = SkColorGetG(color);
int b = SkColorGetB(color);
if (a == 0) {
r = g = b = 0;
} else {
r = (r * a) / 255;
g = (g * a) / 255;
b = (b * a) / 255;
a = 255;
}
color = SkColorSetARGB((U8CPU)a, (U8CPU)r, (U8CPU)g, (U8CPU)b);
}
*dst.getAddr32(x, y) = color;
}
}
return SkImageEncoder::EncodeFile(outName, dst, SkImageEncoder::kPNG_Type, 100);
}
static void decodeFileAndWrite(const char srcPath[]) {
SkBitmap bitmap;
SkFILEStream stream(srcPath);
if (!stream.isValid()) {
return;
}
SkImageDecoder* codec = SkImageDecoder::Factory(&stream);
if (NULL == codec) {
return;
}
SkAutoTDelete<SkImageDecoder> ad(codec);
stream.rewind();
if (!codec->decode(&stream, &bitmap, SkBitmap::kARGB_8888_Config,
SkImageDecoder::kDecodePixels_Mode)) {
return;
}
write_bitmap(srcPath, bitmap);
}
/**
* Return true if the filename represents an image.
*/
static bool is_image_file(const char* filename) {
const char* gImageExtensions[] = {
".png", ".PNG", ".jpg", ".JPG", ".jpeg", ".JPEG", ".bmp", ".BMP",
".webp", ".WEBP", ".ico", ".ICO", ".wbmp", ".WBMP", ".gif", ".GIF"
};
for (size_t i = 0; i < SK_ARRAY_COUNT(gImageExtensions); ++i) {
if (SkStrEndsWith(filename, gImageExtensions[i])) {
return true;
}
}
return false;
}
int tool_main(int argc, char** argv);
int tool_main(int argc, char** argv) {
SkCommandLineFlags::SetUsage("Decode files, and optionally write the results to files.");
SkCommandLineFlags::Parse(argc, argv);
if (FLAGS_readPath.count() < 1) {
SkDebugf("Folder(s) or image(s) to decode are required.\n");
return -1;
}
SkAutoGraphics ag;
for (int i = 0; i < FLAGS_readPath.count(); i++) {
const char* readPath = FLAGS_readPath[i];
if (strlen(readPath) < 1) {
break;
}
if (sk_isdir(readPath)) {
const char* dir = readPath;
SkOSFile::Iter iter(dir);
SkString filename;
while (iter.next(&filename)) {
if (!is_image_file(filename.c_str())) {
continue;
}
SkString fullname = SkOSPath::SkPathJoin(dir, filename.c_str());
decodeFileAndWrite(fullname.c_str());
}
} else if (sk_exists(readPath) && is_image_file(readPath)) {
decodeFileAndWrite(readPath);
}
}
return 0;
}
#if !defined SK_BUILD_FOR_IOS
int main(int argc, char * const argv[]) {
return tool_main(argc, (char**) argv);
}
#endif
|
