OLD | NEW |
1 /* | 1 /* |
2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SkRWBuffer_DEFINED | 8 #ifndef SkRWBuffer_DEFINED |
9 #define SkRWBuffer_DEFINED | 9 #define SkRWBuffer_DEFINED |
10 | 10 |
(...skipping 35 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
46 | 46 |
47 /** | 47 /** |
48 * Advance to the next contiguous block of memory, returning true if th
ere is another | 48 * Advance to the next contiguous block of memory, returning true if th
ere is another |
49 * block, or false if the iterator is exhausted. | 49 * block, or false if the iterator is exhausted. |
50 */ | 50 */ |
51 bool next(); | 51 bool next(); |
52 | 52 |
53 private: | 53 private: |
54 const SkBufferBlock* fBlock; | 54 const SkBufferBlock* fBlock; |
55 size_t fRemaining; | 55 size_t fRemaining; |
| 56 const SkROBuffer* fBuffer; |
56 }; | 57 }; |
57 | 58 |
58 private: | 59 private: |
59 SkROBuffer(const SkBufferHead* head, size_t available); | 60 SkROBuffer(const SkBufferHead* head, size_t available, const SkBufferBlock*
fTail); |
60 virtual ~SkROBuffer(); | 61 virtual ~SkROBuffer(); |
61 | 62 |
62 const SkBufferHead* fHead; | 63 const SkBufferHead* fHead; |
63 const size_t fAvailable; | 64 const size_t fAvailable; |
| 65 const SkBufferBlock* fTail; |
64 | 66 |
65 friend class SkRWBuffer; | 67 friend class SkRWBuffer; |
66 }; | 68 }; |
67 | 69 |
68 /** | 70 /** |
69 * Accumulates bytes of memory that are "appended" to it, growing internal stor
age as needed. | 71 * Accumulates bytes of memory that are "appended" to it, growing internal stor
age as needed. |
70 * The growth is done such that at any time, a RBuffer or StreamAsset can be sn
apped off, which | 72 * The growth is done such that at any time in the writer's thread, an RBuffer
or StreamAsset |
71 * can see the previously stored bytes, but which will be unaware of any future
writes. | 73 * can be snapped off (and safely passed to another thread). The RBuffer/Stream
Asset snapshot |
| 74 * can see the previously stored bytes, but will be unaware of any future write
s. |
72 */ | 75 */ |
73 class SK_API SkRWBuffer { | 76 class SK_API SkRWBuffer { |
74 public: | 77 public: |
75 SkRWBuffer(size_t initialCapacity = 0); | 78 SkRWBuffer(size_t initialCapacity = 0); |
76 ~SkRWBuffer(); | 79 ~SkRWBuffer(); |
77 | 80 |
78 size_t size() const { return fTotalUsed; } | 81 size_t size() const { return fTotalUsed; } |
79 void append(const void* buffer, size_t length); | 82 void append(const void* buffer, size_t length); |
80 | 83 |
81 SkROBuffer* newRBufferSnapshot() const; | 84 SkROBuffer* newRBufferSnapshot() const; |
82 SkStreamAsset* newStreamSnapshot() const; | 85 SkStreamAsset* newStreamSnapshot() const; |
83 | 86 |
84 #ifdef SK_DEBUG | 87 #ifdef SK_DEBUG |
85 void validate() const; | 88 void validate() const; |
86 #else | 89 #else |
87 void validate() const {} | 90 void validate() const {} |
88 #endif | 91 #endif |
89 | 92 |
90 private: | 93 private: |
91 SkBufferHead* fHead; | 94 SkBufferHead* fHead; |
92 SkBufferBlock* fTail; | 95 SkBufferBlock* fTail; |
93 size_t fTotalUsed; | 96 size_t fTotalUsed; |
94 }; | 97 }; |
95 | 98 |
96 #endif | 99 #endif |
OLD | NEW |