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Side by Side Diff: services/image_decoder/public/type_converters.cc

Issue 1028543002: Turn the utility process image decoder into a Mojo service. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Move to //services. Created 5 years, 9 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "services/image_decoder/public/type_converters.h"
6
7 #include <string.h>
8
9 #include "base/logging.h"
10 #include "third_party/skia/include/core/SkBitmap.h"
11
12 namespace mojo {
13
14 namespace {
15
16 SkColorType MojoColorTypeToSk(services::image_decoder::ColorType type) {
17 switch (type) {
18 case services::image_decoder::COLOR_TYPE_UNKNOWN:
19 return kUnknown_SkColorType;
20 case services::image_decoder::COLOR_TYPE_ALPHA_8:
21 return kAlpha_8_SkColorType;
22 case services::image_decoder::COLOR_TYPE_RGB_565:
23 return kRGB_565_SkColorType;
24 case services::image_decoder::COLOR_TYPE_ARGB_4444:
25 return kARGB_4444_SkColorType;
26 case services::image_decoder::COLOR_TYPE_RGBA_8888:
27 return kRGBA_8888_SkColorType;
28 case services::image_decoder::COLOR_TYPE_BGRA_8888:
29 return kBGRA_8888_SkColorType;
30 case services::image_decoder::COLOR_TYPE_INDEX_8:
31 return kIndex_8_SkColorType;
32 case services::image_decoder::COLOR_TYPE_GRAY_8:
33 return kGray_8_SkColorType;
34 default:
35 NOTREACHED();
36 }
37 return kUnknown_SkColorType;
38 }
39
40 SkAlphaType MojoAlphaTypeToSk(services::image_decoder::AlphaType type) {
41 switch (type) {
42 case services::image_decoder::ALPHA_TYPE_UNKNOWN:
43 return kUnknown_SkAlphaType;
44 case services::image_decoder::ALPHA_TYPE_OPAQUE:
45 return kOpaque_SkAlphaType;
46 case services::image_decoder::ALPHA_TYPE_PREMUL:
47 return kPremul_SkAlphaType;
48 case services::image_decoder::ALPHA_TYPE_UNPREMUL:
49 return kUnpremul_SkAlphaType;
50 default:
51 NOTREACHED();
52 }
53 return kUnknown_SkAlphaType;
54 }
55
56 services::image_decoder::ColorType SkColorTypeToMojo(SkColorType type) {
57 switch (type) {
58 case kUnknown_SkColorType:
59 return services::image_decoder::COLOR_TYPE_UNKNOWN;
60 case kAlpha_8_SkColorType:
61 return services::image_decoder::COLOR_TYPE_ALPHA_8;
62 case kRGB_565_SkColorType:
63 return services::image_decoder::COLOR_TYPE_RGB_565;
64 case kARGB_4444_SkColorType:
65 return services::image_decoder::COLOR_TYPE_ARGB_4444;
66 case kRGBA_8888_SkColorType:
67 return services::image_decoder::COLOR_TYPE_RGBA_8888;
68 case kBGRA_8888_SkColorType:
69 return services::image_decoder::COLOR_TYPE_BGRA_8888;
70 case kIndex_8_SkColorType:
71 return services::image_decoder::COLOR_TYPE_INDEX_8;
72 case kGray_8_SkColorType:
73 return services::image_decoder::COLOR_TYPE_GRAY_8;
74 default:
75 NOTREACHED();
76 }
77 return services::image_decoder::COLOR_TYPE_UNKNOWN;
78 }
79
80 services::image_decoder::AlphaType SkAlphaTypeToMojo(SkAlphaType type) {
81 switch (type) {
82 case kUnknown_SkAlphaType:
83 return services::image_decoder::ALPHA_TYPE_UNKNOWN;
84 case kOpaque_SkAlphaType:
85 return services::image_decoder::ALPHA_TYPE_OPAQUE;
86 case kPremul_SkAlphaType:
87 return services::image_decoder::ALPHA_TYPE_PREMUL;
88 case kUnpremul_SkAlphaType:
89 return services::image_decoder::ALPHA_TYPE_UNPREMUL;
90 default:
91 NOTREACHED();
92 }
93 return services::image_decoder::ALPHA_TYPE_UNKNOWN;
94 }
95
96 } // namespace
97
98 SkBitmap TypeConverter<SkBitmap, services::image_decoder::ImagePtr>
99 ::Convert(const services::image_decoder::ImagePtr& image) {
100 SkBitmap bitmap;
101 if (!bitmap.tryAllocPixels(SkImageInfo::Make(
102 image->width, image->height,
103 MojoColorTypeToSk(image->color_type),
104 MojoAlphaTypeToSk(image->alpha_type)))) {
105 LOG(ERROR) << "Unable to create SkBitmap";
106 return SkBitmap();
107 }
108 if (bitmap.getSize() != image->pixel_data.size()) {
109 LOG(ERROR) << "Incorrect bitmap size, expected: "
110 << image->pixel_data.size()
111 << ", actual: " << bitmap.getSize();
112 return SkBitmap();
113 }
114
115 memcpy(bitmap.getPixels(), &image->pixel_data[0], bitmap.getSize());
116 return bitmap;
117 }
118
119 services::image_decoder::ImagePtr TypeConverter<
120 services::image_decoder::ImagePtr, SkBitmap>
121 ::Convert(const SkBitmap& bitmap) {
122 services::image_decoder::ImagePtr result =
123 services::image_decoder::Image::New();
124 const SkImageInfo& info = bitmap.info();
125 result->color_type = SkColorTypeToMojo(info.fColorType);
126 result->alpha_type = SkAlphaTypeToMojo(info.fAlphaType);
127 result->width = info.fWidth;
128 result->height = info.fHeight;
129 SkAutoLockPixels lock(bitmap);
130 size_t size = bitmap.getSize();
131 result->pixel_data = mojo::Array<uint8_t>::New(size);
132 memcpy(&result->pixel_data[0], bitmap.getPixels(), size);
133 return result.Pass();
134 }
135
136 } // namespace mojo
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