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1 /* | 1 /* |
2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 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 #include "SkMallocPixelRef.h" | 8 #include "SkMallocPixelRef.h" |
9 #include "SkBitmap.h" | 9 #include "SkBitmap.h" |
10 #include "SkReadBuffer.h" | 10 #include "SkReadBuffer.h" |
11 #include "SkWriteBuffer.h" | 11 #include "SkWriteBuffer.h" |
12 | 12 |
13 // assumes ptr was allocated via sk_malloc | 13 // assumes ptr was allocated via sk_malloc |
14 static void sk_free_releaseproc(void* ptr, void*) { | 14 static void sk_free_releaseproc(void* ptr, void*) { |
15 sk_free(ptr); | 15 sk_free(ptr); |
16 } | 16 } |
17 | 17 |
18 static bool is_valid(const SkImageInfo& info, SkColorTable* ctable) { | 18 static bool is_valid(const SkImageInfo& info, SkColorTable* ctable) { |
19 if (info.width() < 0 || info.height() < 0 || | 19 if (info.width() < 0 || info.height() < 0 || |
20 (unsigned)info.colorType() > (unsigned)kLastEnum_SkColorType || | 20 (unsigned)info.colorType() > (unsigned)kLastEnum_SkColorType || |
21 (unsigned)info.alphaType() > (unsigned)kLastEnum_SkAlphaType) | 21 (unsigned)info.alphaType() > (unsigned)kLastEnum_SkAlphaType) |
22 { | 22 { |
23 return false; | 23 return false; |
24 } | 24 } |
25 | 25 |
26 // these seem like good checks, but currently we have (at least) tests | 26 // these seem like good checks, but currently we have (at least) tests |
27 // that expect the pixelref to succeed even when there is a mismatch | 27 // that expect the pixelref to succeed even when there is a mismatch |
28 // with colortables. fix? | 28 // with colortables. fix? |
29 #if 0 | 29 #if 0 |
30 if (kIndex8_SkColorType == info.fColorType && NULL == ctable) { | 30 if (kIndex8_SkColorType == info.fColorType && nullptr == ctable) { |
31 return false; | 31 return false; |
32 } | 32 } |
33 if (kIndex8_SkColorType != info.fColorType && ctable) { | 33 if (kIndex8_SkColorType != info.fColorType && ctable) { |
34 return false; | 34 return false; |
35 } | 35 } |
36 #endif | 36 #endif |
37 return true; | 37 return true; |
38 } | 38 } |
39 | 39 |
40 SkMallocPixelRef* SkMallocPixelRef::NewDirect(const SkImageInfo& info, | 40 SkMallocPixelRef* SkMallocPixelRef::NewDirect(const SkImageInfo& info, |
41 void* addr, | 41 void* addr, |
42 size_t rowBytes, | 42 size_t rowBytes, |
43 SkColorTable* ctable) { | 43 SkColorTable* ctable) { |
44 if (!is_valid(info, ctable)) { | 44 if (!is_valid(info, ctable)) { |
45 return NULL; | 45 return nullptr; |
46 } | 46 } |
47 return new SkMallocPixelRef(info, addr, rowBytes, ctable, NULL, NULL); | 47 return new SkMallocPixelRef(info, addr, rowBytes, ctable, nullptr, nullptr); |
48 } | 48 } |
49 | 49 |
50 | 50 |
51 SkMallocPixelRef* SkMallocPixelRef::NewAllocate(const SkImageInfo& info, | 51 SkMallocPixelRef* SkMallocPixelRef::NewAllocate(const SkImageInfo& info, |
52 size_t requestedRowBytes, | 52 size_t requestedRowBytes, |
53 SkColorTable* ctable) { | 53 SkColorTable* ctable) { |
54 if (!is_valid(info, ctable)) { | 54 if (!is_valid(info, ctable)) { |
55 return NULL; | 55 return nullptr; |
56 } | 56 } |
57 | 57 |
58 // only want to permit 31bits of rowBytes | 58 // only want to permit 31bits of rowBytes |
59 int64_t minRB = (int64_t)info.minRowBytes64(); | 59 int64_t minRB = (int64_t)info.minRowBytes64(); |
60 if (minRB < 0 || !sk_64_isS32(minRB)) { | 60 if (minRB < 0 || !sk_64_isS32(minRB)) { |
61 return NULL; // allocation will be too large | 61 return nullptr; // allocation will be too large |
62 } | 62 } |
63 if (requestedRowBytes > 0 && (int32_t)requestedRowBytes < minRB) { | 63 if (requestedRowBytes > 0 && (int32_t)requestedRowBytes < minRB) { |
64 return NULL; // cannot meet requested rowbytes | 64 return nullptr; // cannot meet requested rowbytes |
65 } | 65 } |
66 | 66 |
67 int32_t rowBytes; | 67 int32_t rowBytes; |
68 if (requestedRowBytes) { | 68 if (requestedRowBytes) { |
69 rowBytes = SkToS32(requestedRowBytes); | 69 rowBytes = SkToS32(requestedRowBytes); |
70 } else { | 70 } else { |
71 rowBytes = minRB; | 71 rowBytes = minRB; |
72 } | 72 } |
73 | 73 |
74 int64_t bigSize = (int64_t)info.height() * rowBytes; | 74 int64_t bigSize = (int64_t)info.height() * rowBytes; |
75 if (!sk_64_isS32(bigSize)) { | 75 if (!sk_64_isS32(bigSize)) { |
76 return NULL; | 76 return nullptr; |
77 } | 77 } |
78 | 78 |
79 size_t size = sk_64_asS32(bigSize); | 79 size_t size = sk_64_asS32(bigSize); |
80 SkASSERT(size >= info.getSafeSize(rowBytes)); | 80 SkASSERT(size >= info.getSafeSize(rowBytes)); |
81 void* addr = sk_malloc_flags(size, 0); | 81 void* addr = sk_malloc_flags(size, 0); |
82 if (NULL == addr) { | 82 if (nullptr == addr) { |
83 return NULL; | 83 return nullptr; |
84 } | 84 } |
85 | 85 |
86 return new SkMallocPixelRef(info, addr, rowBytes, ctable, sk_free_releasepro
c, NULL); | 86 return new SkMallocPixelRef(info, addr, rowBytes, ctable, sk_free_releasepro
c, nullptr); |
87 } | 87 } |
88 | 88 |
89 SkMallocPixelRef* SkMallocPixelRef::NewWithProc(const SkImageInfo& info, | 89 SkMallocPixelRef* SkMallocPixelRef::NewWithProc(const SkImageInfo& info, |
90 size_t rowBytes, | 90 size_t rowBytes, |
91 SkColorTable* ctable, | 91 SkColorTable* ctable, |
92 void* addr, | 92 void* addr, |
93 SkMallocPixelRef::ReleaseProc pr
oc, | 93 SkMallocPixelRef::ReleaseProc pr
oc, |
94 void* context) { | 94 void* context) { |
95 if (!is_valid(info, ctable)) { | 95 if (!is_valid(info, ctable)) { |
96 return NULL; | 96 return nullptr; |
97 } | 97 } |
98 return new SkMallocPixelRef(info, addr, rowBytes, ctable, proc, context); | 98 return new SkMallocPixelRef(info, addr, rowBytes, ctable, proc, context); |
99 } | 99 } |
100 | 100 |
101 static void sk_data_releaseproc(void*, void* dataPtr) { | 101 static void sk_data_releaseproc(void*, void* dataPtr) { |
102 (static_cast<SkData*>(dataPtr))->unref(); | 102 (static_cast<SkData*>(dataPtr))->unref(); |
103 } | 103 } |
104 | 104 |
105 SkMallocPixelRef* SkMallocPixelRef::NewWithData(const SkImageInfo& info, | 105 SkMallocPixelRef* SkMallocPixelRef::NewWithData(const SkImageInfo& info, |
106 size_t rowBytes, | 106 size_t rowBytes, |
107 SkColorTable* ctable, | 107 SkColorTable* ctable, |
108 SkData* data) { | 108 SkData* data) { |
109 SkASSERT(data != NULL); | 109 SkASSERT(data != nullptr); |
110 if (!is_valid(info, ctable)) { | 110 if (!is_valid(info, ctable)) { |
111 return NULL; | 111 return nullptr; |
112 } | 112 } |
113 if ((rowBytes < info.minRowBytes()) | 113 if ((rowBytes < info.minRowBytes()) |
114 || (data->size() < info.getSafeSize(rowBytes))) { | 114 || (data->size() < info.getSafeSize(rowBytes))) { |
115 return NULL; | 115 return nullptr; |
116 } | 116 } |
117 data->ref(); | 117 data->ref(); |
118 SkMallocPixelRef* pr = | 118 SkMallocPixelRef* pr = |
119 new SkMallocPixelRef(info, const_cast<void*>(data->data()), rowBytes
, ctable, | 119 new SkMallocPixelRef(info, const_cast<void*>(data->data()), rowBytes
, ctable, |
120 sk_data_releaseproc, static_cast<void*>(data)); | 120 sk_data_releaseproc, static_cast<void*>(data)); |
121 SkASSERT(pr != NULL); | 121 SkASSERT(pr != nullptr); |
122 // We rely on the immutability of the pixels to make the | 122 // We rely on the immutability of the pixels to make the |
123 // const_cast okay. | 123 // const_cast okay. |
124 pr->setImmutable(); | 124 pr->setImmutable(); |
125 return pr; | 125 return pr; |
126 } | 126 } |
127 | 127 |
128 /////////////////////////////////////////////////////////////////////////////// | 128 /////////////////////////////////////////////////////////////////////////////// |
129 | 129 |
130 SkMallocPixelRef::SkMallocPixelRef(const SkImageInfo& info, void* storage, | 130 SkMallocPixelRef::SkMallocPixelRef(const SkImageInfo& info, void* storage, |
131 size_t rowBytes, SkColorTable* ctable, | 131 size_t rowBytes, SkColorTable* ctable, |
132 bool ownsPixels) | 132 bool ownsPixels) |
133 : INHERITED(info) | 133 : INHERITED(info) |
134 , fReleaseProc(ownsPixels ? sk_free_releaseproc : NULL) | 134 , fReleaseProc(ownsPixels ? sk_free_releaseproc : nullptr) |
135 , fReleaseProcContext(NULL) { | 135 , fReleaseProcContext(nullptr) { |
136 // This constructor is now DEPRICATED. | 136 // This constructor is now DEPRICATED. |
137 SkASSERT(is_valid(info, ctable)); | 137 SkASSERT(is_valid(info, ctable)); |
138 SkASSERT(rowBytes >= info.minRowBytes()); | 138 SkASSERT(rowBytes >= info.minRowBytes()); |
139 | 139 |
140 if (kIndex_8_SkColorType != info.colorType()) { | 140 if (kIndex_8_SkColorType != info.colorType()) { |
141 ctable = NULL; | 141 ctable = nullptr; |
142 } | 142 } |
143 | 143 |
144 fStorage = storage; | 144 fStorage = storage; |
145 fCTable = ctable; | 145 fCTable = ctable; |
146 fRB = rowBytes; | 146 fRB = rowBytes; |
147 SkSafeRef(ctable); | 147 SkSafeRef(ctable); |
148 | 148 |
149 this->setPreLocked(fStorage, rowBytes, fCTable); | 149 this->setPreLocked(fStorage, rowBytes, fCTable); |
150 } | 150 } |
151 | 151 |
152 SkMallocPixelRef::SkMallocPixelRef(const SkImageInfo& info, void* storage, | 152 SkMallocPixelRef::SkMallocPixelRef(const SkImageInfo& info, void* storage, |
153 size_t rowBytes, SkColorTable* ctable, | 153 size_t rowBytes, SkColorTable* ctable, |
154 SkMallocPixelRef::ReleaseProc proc, | 154 SkMallocPixelRef::ReleaseProc proc, |
155 void* context) | 155 void* context) |
156 : INHERITED(info) | 156 : INHERITED(info) |
157 , fReleaseProc(proc) | 157 , fReleaseProc(proc) |
158 , fReleaseProcContext(context) | 158 , fReleaseProcContext(context) |
159 { | 159 { |
160 SkASSERT(is_valid(info, ctable)); | 160 SkASSERT(is_valid(info, ctable)); |
161 SkASSERT(rowBytes >= info.minRowBytes()); | 161 SkASSERT(rowBytes >= info.minRowBytes()); |
162 | 162 |
163 if (kIndex_8_SkColorType != info.colorType()) { | 163 if (kIndex_8_SkColorType != info.colorType()) { |
164 ctable = NULL; | 164 ctable = nullptr; |
165 } | 165 } |
166 | 166 |
167 fStorage = storage; | 167 fStorage = storage; |
168 fCTable = ctable; | 168 fCTable = ctable; |
169 fRB = rowBytes; | 169 fRB = rowBytes; |
170 SkSafeRef(ctable); | 170 SkSafeRef(ctable); |
171 | 171 |
172 this->setPreLocked(fStorage, rowBytes, fCTable); | 172 this->setPreLocked(fStorage, rowBytes, fCTable); |
173 } | 173 } |
174 | 174 |
175 | 175 |
176 SkMallocPixelRef::~SkMallocPixelRef() { | 176 SkMallocPixelRef::~SkMallocPixelRef() { |
177 SkSafeUnref(fCTable); | 177 SkSafeUnref(fCTable); |
178 if (fReleaseProc != NULL) { | 178 if (fReleaseProc != nullptr) { |
179 fReleaseProc(fStorage, fReleaseProcContext); | 179 fReleaseProc(fStorage, fReleaseProcContext); |
180 } | 180 } |
181 } | 181 } |
182 | 182 |
183 bool SkMallocPixelRef::onNewLockPixels(LockRec* rec) { | 183 bool SkMallocPixelRef::onNewLockPixels(LockRec* rec) { |
184 rec->fPixels = fStorage; | 184 rec->fPixels = fStorage; |
185 rec->fRowBytes = fRB; | 185 rec->fRowBytes = fRB; |
186 rec->fColorTable = fCTable; | 186 rec->fColorTable = fCTable; |
187 return true; | 187 return true; |
188 } | 188 } |
189 | 189 |
190 void SkMallocPixelRef::onUnlockPixels() { | 190 void SkMallocPixelRef::onUnlockPixels() { |
191 // nothing to do | 191 // nothing to do |
192 } | 192 } |
193 | 193 |
194 size_t SkMallocPixelRef::getAllocatedSizeInBytes() const { | 194 size_t SkMallocPixelRef::getAllocatedSizeInBytes() const { |
195 return this->info().getSafeSize(fRB); | 195 return this->info().getSafeSize(fRB); |
196 } | 196 } |
197 | 197 |
198 /////////////////////////////////////////////////////////////////////////////// | 198 /////////////////////////////////////////////////////////////////////////////// |
199 | 199 |
200 SkPixelRef* SkMallocPixelRef::PRFactory::create(const SkImageInfo& info, size_t
rowBytes, | 200 SkPixelRef* SkMallocPixelRef::PRFactory::create(const SkImageInfo& info, size_t
rowBytes, |
201 SkColorTable* ctable) { | 201 SkColorTable* ctable) { |
202 return SkMallocPixelRef::NewAllocate(info, rowBytes, ctable); | 202 return SkMallocPixelRef::NewAllocate(info, rowBytes, ctable); |
203 } | 203 } |
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