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1 /* | |
2 * Copyright 2012 Google Inc. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license that can be | |
5 * found in the LICENSE file. | |
6 */ | |
7 | |
8 #include "SkBitmap.h" | |
9 #include "SkBitmapHeap.h" | |
10 #include "SkColor.h" | |
11 #include "SkFlattenable.h" | |
12 #include "SkWriteBuffer.h" | |
13 #include "SkPictureFlat.h" | |
14 #include "SkRefCnt.h" | |
15 #include "SkShader.h" | |
16 #include "Test.h" | |
17 | |
18 struct SimpleFlatController : public SkFlatController { | |
19 SimpleFlatController() : SkFlatController() {} | |
20 ~SimpleFlatController() { fAllocations.freeAll(); } | |
21 void* allocThrow(size_t bytes) override { | |
22 fAllocations.push(sk_malloc_throw(bytes)); | |
23 return fAllocations.top(); | |
24 } | |
25 void unalloc(void*) override { } | |
26 void setBitmapStorage(SkBitmapHeap* h) { this->setBitmapHeap(h); } | |
27 private: | |
28 SkTDArray<void*> fAllocations; | |
29 }; | |
30 | |
31 struct SkShaderTraits { | |
32 static void Flatten(SkWriteBuffer& buffer, const SkShader& shader) { | |
33 buffer.writeFlattenable(&shader); | |
34 } | |
35 }; | |
36 typedef SkFlatDictionary<SkShader, SkShaderTraits> FlatDictionary; | |
37 | |
38 class SkBitmapHeapTester { | |
39 public: | |
40 static int32_t GetRefCount(const SkBitmapHeapEntry* entry) { | |
41 return entry->fRefCount; | |
42 } | |
43 }; | |
44 | |
45 DEF_TEST(BitmapHeap, reporter) { | |
46 // Create a bitmap shader. | |
47 SkBitmap bm; | |
48 bm.allocN32Pixels(2, 2); | |
49 bm.eraseColor(SK_ColorRED); | |
50 uint32_t* pixel = bm.getAddr32(1,0); | |
51 *pixel = SK_ColorBLUE; | |
52 | |
53 auto bitmapShader = SkShader::MakeBitmapShader(bm, SkShader::kRepeat_TileMod
e, | |
54 SkShader::kRepeat_TileMode); | |
55 | |
56 // Flatten, storing it in the bitmap heap. | |
57 SkBitmapHeap heap(1, 1); | |
58 SimpleFlatController controller; | |
59 controller.setBitmapStorage(&heap); | |
60 FlatDictionary dictionary(&controller); | |
61 | |
62 // Dictionary and heap start off empty. | |
63 REPORTER_ASSERT(reporter, heap.count() == 0); | |
64 REPORTER_ASSERT(reporter, dictionary.count() == 0); | |
65 | |
66 heap.deferAddingOwners(); | |
67 int index = dictionary.find(*bitmapShader); | |
68 heap.endAddingOwnersDeferral(true); | |
69 | |
70 // The dictionary and heap should now each have one entry. | |
71 REPORTER_ASSERT(reporter, 1 == index); | |
72 REPORTER_ASSERT(reporter, heap.count() == 1); | |
73 REPORTER_ASSERT(reporter, dictionary.count() == 1); | |
74 | |
75 // The bitmap entry's refcount should be 1, then 0 after release. | |
76 SkBitmapHeapEntry* entry = heap.getEntry(0); | |
77 REPORTER_ASSERT(reporter, SkBitmapHeapTester::GetRefCount(entry) == 1); | |
78 | |
79 entry->releaseRef(); | |
80 REPORTER_ASSERT(reporter, SkBitmapHeapTester::GetRefCount(entry) == 0); | |
81 | |
82 // Now clear out the heap, after which it should be empty. | |
83 heap.freeMemoryIfPossible(~0U); | |
84 REPORTER_ASSERT(reporter, heap.count() == 0); | |
85 | |
86 // Now attempt to flatten the shader again. | |
87 heap.deferAddingOwners(); | |
88 index = dictionary.find(*bitmapShader); | |
89 heap.endAddingOwnersDeferral(false); | |
90 | |
91 // The bitmap heap should contain the bitmap, but with no references. | |
92 REPORTER_ASSERT(reporter, heap.count() == 1); | |
93 REPORTER_ASSERT(reporter, SkBitmapHeapTester::GetRefCount(heap.getEntry(0))
== 0); | |
94 } | |
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