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1 // Copyright 2016 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 <memory> | |
6 #include <vector> | |
7 | |
8 #include "base/bind.h" | |
9 #include "base/lazy_instance.h" | |
10 #include "base/message_loop/message_loop.h" | |
11 #include "gin/array_buffer.h" | |
12 #include "gin/public/isolate_holder.h" | |
13 #include "services/image_decoder/image_decoder_impl.h" | |
14 #include "testing/gtest/include/gtest/gtest.h" | |
15 #include "third_party/WebKit/public/platform/scheduler/utility/webthread_impl_fo
r_utility_thread.h" | |
16 #include "third_party/WebKit/public/web/WebKit.h" | |
17 #include "third_party/skia/include/core/SkBitmap.h" | |
18 #include "ui/gfx/codec/jpeg_codec.h" | |
19 | |
20 #if defined(V8_USE_EXTERNAL_STARTUP_DATA) | |
21 #include "gin/v8_initializer.h" | |
22 #endif | |
23 | |
24 namespace image_decoder { | |
25 | |
26 namespace { | |
27 | |
28 const int64_t kTestMaxImageSize = 128 * 1024; | |
29 | |
30 bool CreateJPEGImage(int width, | |
31 int height, | |
32 SkColor color, | |
33 std::vector<unsigned char>* output) { | |
34 SkBitmap bitmap; | |
35 bitmap.allocN32Pixels(width, height); | |
36 bitmap.eraseColor(color); | |
37 | |
38 const int kQuality = 50; | |
39 if (!gfx::JPEGCodec::Encode( | |
40 static_cast<const unsigned char*>(bitmap.getPixels()), | |
41 gfx::JPEGCodec::FORMAT_SkBitmap, width, height, | |
42 static_cast<int>(bitmap.rowBytes()), kQuality, output)) { | |
43 LOG(ERROR) << "Unable to encode " << width << "x" << height << " bitmap"; | |
44 return false; | |
45 } | |
46 return true; | |
47 } | |
48 | |
49 class Request { | |
50 public: | |
51 explicit Request(ImageDecoderImpl* decoder) : decoder_(decoder) {} | |
52 | |
53 void DecodeImage(const std::vector<unsigned char>& image, bool shrink) { | |
54 decoder_->DecodeImage( | |
55 image, mojom::ImageCodec::DEFAULT, shrink, kTestMaxImageSize, | |
56 gfx::Size(), // Take the smallest frame (there's only one frame). | |
57 base::Bind(&Request::OnRequestDone, base::Unretained(this))); | |
58 } | |
59 | |
60 const SkBitmap& bitmap() const { return bitmap_; } | |
61 | |
62 private: | |
63 void OnRequestDone(const SkBitmap& result_image) { bitmap_ = result_image; } | |
64 | |
65 ImageDecoderImpl* decoder_; | |
66 SkBitmap bitmap_; | |
67 }; | |
68 | |
69 // We need to ensure that Blink and V8 are initialized in order to use content's | |
70 // image decoding call. | |
71 class BlinkInitializer : public blink::Platform { | |
72 public: | |
73 BlinkInitializer() | |
74 : main_thread_(new blink::scheduler::WebThreadImplForUtilityThread()) { | |
75 #if defined(V8_USE_EXTERNAL_STARTUP_DATA) | |
76 gin::V8Initializer::LoadV8Snapshot(); | |
77 gin::V8Initializer::LoadV8Natives(); | |
78 #endif | |
79 | |
80 blink::initialize(this); | |
81 } | |
82 | |
83 ~BlinkInitializer() override {} | |
84 | |
85 blink::WebThread* currentThread() override { return main_thread_.get(); } | |
86 | |
87 private: | |
88 std::unique_ptr<blink::scheduler::WebThreadImplForUtilityThread> main_thread_; | |
89 | |
90 DISALLOW_COPY_AND_ASSIGN(BlinkInitializer); | |
91 }; | |
92 | |
93 base::LazyInstance<BlinkInitializer>::Leaky g_blink_initializer = | |
94 LAZY_INSTANCE_INITIALIZER; | |
95 | |
96 class ImageDecoderImplTest : public testing::Test { | |
97 public: | |
98 ImageDecoderImplTest() : decoder_(nullptr) {} | |
99 ~ImageDecoderImplTest() override {} | |
100 | |
101 void SetUp() override { g_blink_initializer.Get(); } | |
102 | |
103 protected: | |
104 ImageDecoderImpl* decoder() { return &decoder_; } | |
105 | |
106 private: | |
107 base::MessageLoop message_loop_; | |
108 ImageDecoderImpl decoder_; | |
109 }; | |
110 | |
111 } // namespace | |
112 | |
113 // Test that DecodeImage() doesn't return image message > (max message size) | |
114 TEST_F(ImageDecoderImplTest, DecodeImageSizeLimit) { | |
115 // Approx max height for 3:2 image that will fit in the allotted space. | |
116 // 1.5 for width/height ratio, 4 for bytes/pixel. | |
117 int max_height_for_msg = sqrt(kTestMaxImageSize / (1.5 * 4)); | |
118 int base_msg_size = sizeof(skia::mojom::Bitmap::Data_); | |
119 | |
120 // Sizes which should trigger dimension-halving 0, 1 and 2 times | |
121 int heights[] = {max_height_for_msg - 10, | |
122 max_height_for_msg + 10, | |
123 2 * max_height_for_msg + 10}; | |
124 int widths[] = {heights[0] * 3 / 2, heights[1] * 3 / 2, heights[2] * 3 / 2}; | |
125 for (size_t i = 0; i < arraysize(heights); i++) { | |
126 std::vector<unsigned char> jpg; | |
127 ASSERT_TRUE(CreateJPEGImage(widths[i], heights[i], SK_ColorRED, &jpg)); | |
128 | |
129 Request request(decoder()); | |
130 request.DecodeImage(jpg, true); | |
131 ASSERT_FALSE(request.bitmap().isNull()); | |
132 | |
133 // Check that image has been shrunk appropriately | |
134 EXPECT_LT(request.bitmap().computeSize64() + base_msg_size, | |
135 kTestMaxImageSize); | |
136 // Android does its own image shrinking for memory conservation deeper in | |
137 // the decode, so more specific tests here won't work. | |
138 #if !defined(OS_ANDROID) | |
139 EXPECT_EQ(widths[i] >> i, request.bitmap().width()); | |
140 EXPECT_EQ(heights[i] >> i, request.bitmap().height()); | |
141 | |
142 // Check that if resize not requested and image exceeds IPC size limit, | |
143 // an empty image is returned | |
144 if (heights[i] > max_height_for_msg) { | |
145 Request request(decoder()); | |
146 request.DecodeImage(jpg, false); | |
147 EXPECT_TRUE(request.bitmap().isNull()); | |
148 } | |
149 #endif | |
150 } | |
151 } | |
152 | |
153 TEST_F(ImageDecoderImplTest, DecodeImageFailed) { | |
154 // The "jpeg" is just some "random" data; | |
155 const char kRandomData[] = "u gycfy7xdjkhfgui bdui "; | |
156 std::vector<unsigned char> jpg(kRandomData, | |
157 kRandomData + sizeof(kRandomData)); | |
158 | |
159 Request request(decoder()); | |
160 request.DecodeImage(jpg, false); | |
161 EXPECT_TRUE(request.bitmap().isNull()); | |
162 } | |
163 | |
164 } // namespace image_decoder | |
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