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1 /* | 1 /* |
2 * Copyright 2006 The Android Open Source Project | 2 * Copyright 2006 The Android Open Source Project |
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 SkStream_DEFINED | 8 #ifndef SkStream_DEFINED |
9 #define SkStream_DEFINED | 9 #define SkStream_DEFINED |
10 | 10 |
11 #include "SkRefCnt.h" | 11 #include "SkRefCnt.h" |
12 #include "SkScalar.h" | 12 #include "SkScalar.h" |
13 | 13 |
14 class SkData; | 14 class SkData; |
15 | 15 |
| 16 class SkStream; |
| 17 class SkStreamRewindable; |
| 18 class SkStreamSeekable; |
| 19 class SkStreamAsset; |
| 20 class SkStreamMemory; |
| 21 |
16 /** | 22 /** |
17 * SkStream -- abstraction for a source of bytes. Subclasses can be backed by | 23 * SkStream -- abstraction for a source of bytes. Subclasses can be backed by |
18 * memory, or a file, or something else. | 24 * memory, or a file, or something else. |
19 * | 25 * |
20 * NOTE: | 26 * NOTE: |
21 * | 27 * |
22 * Classic "streams" APIs are sort of async, in that on a request for N | 28 * Classic "streams" APIs are sort of async, in that on a request for N |
23 * bytes, they may return fewer than N bytes on a given call, in which case | 29 * bytes, they may return fewer than N bytes on a given call, in which case |
24 * the caller can "try again" to get more bytes, eventually (modulo an error) | 30 * the caller can "try again" to get more bytes, eventually (modulo an error) |
25 * receiving their total N bytes. | 31 * receiving their total N bytes. |
26 * | 32 * |
27 * Skia streams behave differently. They are effectively synchronous, and will | 33 * Skia streams behave differently. They are effectively synchronous, and will |
28 * always return all N bytes of the request if possible. If they return fewer | 34 * always return all N bytes of the request if possible. If they return fewer |
29 * (the read() call returns the number of bytes read) then that means there is | 35 * (the read() call returns the number of bytes read) then that means there is |
30 * no more data (at EOF or hit an error). The caller should *not* call again | 36 * no more data (at EOF or hit an error). The caller should *not* call again |
31 * in hopes of fulfilling more of the request. | 37 * in hopes of fulfilling more of the request. |
32 */ | 38 */ |
33 class SK_API SkStream : public SkRefCnt { | 39 class SK_API SkStream : public SkRefCnt { |
34 public: | 40 public: |
35 /** | 41 /** |
36 * Attempts to open the specified file, and return a stream to it (using | 42 * Attempts to open the specified file, and return a stream to it (using |
37 * mmap if available). On success, the caller must call unref() on the | 43 * mmap if available). On success, the caller must call unref() on the |
38 * returned object. On failure, returns NULL. | 44 * returned object. On failure, returns NULL. |
39 */ | 45 */ |
40 static SkStream* NewFromFile(const char path[]); | 46 static SkStreamAsset* NewFromFile(const char path[]); |
41 | 47 |
42 SK_DECLARE_INST_COUNT(SkStream) | 48 SK_DECLARE_INST_COUNT(SkStream) |
43 | 49 |
44 /** Called to rewind to the beginning of the stream. If this cannot be | 50 /** Reads or skips size number of bytes. |
45 done, return false. | 51 * If buffer == NULL, skip size bytes, return how many were skipped. |
46 */ | 52 * If buffer != NULL, copy size bytes into buffer, return how many were cop
ied. |
47 virtual bool rewind() = 0; | 53 * @param buffer when NULL skip size bytes, otherwise copy size bytes into
buffer |
48 /** If this stream represents a file, this method returns the file's name. | 54 * @param size the number of bytes to skip or copy |
49 If it does not, it returns NULL (the default behavior). | 55 * @return bytes read on success |
50 */ | 56 */ |
51 virtual const char* getFileName(); | |
52 /** Called to read or skip size number of bytes. | |
53 If buffer is NULL and size > 0, skip that many bytes, returning how many
were skipped. | |
54 If buffer is NULL and size == 0, return the total length of the stream. | |
55 If buffer != NULL, copy the requested number of bytes into buffer, retur
ning how many were copied. | |
56 @param buffer If buffer is NULL, ignore and just skip size bytes, othe
rwise copy size bytes into buffer | |
57 @param size The number of bytes to skip or copy | |
58 @return bytes read on success | |
59 */ | |
60 virtual size_t read(void* buffer, size_t size) = 0; | 57 virtual size_t read(void* buffer, size_t size) = 0; |
61 | 58 |
62 /** Return the total length of the stream. | 59 /** Skip size number of bytes. |
63 */ | 60 * @return the actual number bytes that could be skipped. |
64 size_t getLength() { return this->read(NULL, 0); } | 61 */ |
| 62 size_t skip(size_t size) { |
| 63 //return this->read(NULL, size); |
| 64 //TODO: remove this old logic after updating existing implementations |
| 65 return 0 == size ? 0 : this->read(NULL, size); |
| 66 } |
65 | 67 |
66 /** Skip the specified number of bytes, returning the actual number | 68 /** Returns true if there are no more bytes to be read. |
67 of bytes that could be skipped. | 69 * In Progress: do not use until all implementations are updated. |
68 */ | 70 * TODO: after this is implemented everywhere, make pure virtual. |
69 size_t skip(size_t bytes); | 71 */ |
70 | 72 virtual bool atEnd() const { |
71 /** If the stream is backed by RAM, this method returns the starting | 73 SkASSERT(false); |
72 address for the data. If not (i.e. it is backed by a file or other | 74 return true; |
73 structure), this method returns NULL. | 75 } |
74 The default implementation returns NULL. | |
75 */ | |
76 virtual const void* getMemoryBase(); | |
77 | 76 |
78 int8_t readS8(); | 77 int8_t readS8(); |
79 int16_t readS16(); | 78 int16_t readS16(); |
80 int32_t readS32(); | 79 int32_t readS32(); |
81 | 80 |
82 uint8_t readU8() { return (uint8_t)this->readS8(); } | 81 uint8_t readU8() { return (uint8_t)this->readS8(); } |
83 uint16_t readU16() { return (uint16_t)this->readS16(); } | 82 uint16_t readU16() { return (uint16_t)this->readS16(); } |
84 uint32_t readU32() { return (uint32_t)this->readS32(); } | 83 uint32_t readU32() { return (uint32_t)this->readS32(); } |
85 | 84 |
86 bool readBool() { return this->readU8() != 0; } | 85 bool readBool() { return this->readU8() != 0; } |
87 SkScalar readScalar(); | 86 SkScalar readScalar(); |
88 size_t readPackedUInt(); | 87 size_t readPackedUInt(); |
89 | 88 |
90 /** | 89 /** |
91 * Reconstitute an SkData object that was written to the stream | 90 * Reconstitute an SkData object that was written to the stream |
92 * using SkWStream::writeData(). | 91 * using SkWStream::writeData(). |
93 */ | 92 */ |
94 SkData* readData(); | 93 SkData* readData(); |
95 | 94 |
| 95 //SkStreamRewindable |
| 96 /** Rewinds to the beginning of the stream. If this cannot be done, return f
alse. */ |
| 97 virtual bool rewind() { return false; } |
| 98 |
| 99 /** Duplicates this stream. If this cannot be done, returns NULL. |
| 100 * The returned stream will be positioned at the beginning of its data. |
| 101 */ |
| 102 virtual SkStreamRewindable* duplicate() const { return NULL; } |
| 103 |
| 104 //SkStreamSeekable |
| 105 /** Returns true if this stream can report it's current position. */ |
| 106 virtual bool hasPosition() const { return false; } |
| 107 /** Returns the current position in the stream. If this cannot be done, retu
rns 0. */ |
| 108 virtual size_t getPosition() const { return 0; } |
| 109 |
| 110 /** Seeks to an absolute position in the stream. If this cannot be done, ret
urns false. |
| 111 * If an attempt is made to seek past the end of the stream, the position w
ill be set |
| 112 * to the end of the stream. |
| 113 */ |
| 114 virtual bool seek(size_t position) { return false; } |
| 115 |
| 116 /** Seeks to an relative offset in the stream. If this cannot be done, retur
ns false. |
| 117 * If an attempt is made to move to a position outside the stream, the posi
tion will be set |
| 118 * to the closest point within the stream (beginning or end). |
| 119 */ |
| 120 virtual bool move(long offset) { return false; } |
| 121 |
| 122 /** Duplicates this stream. If this cannot be done, returns NULL. |
| 123 * The returned stream will be positioned the same as this stream. |
| 124 */ |
| 125 virtual SkStreamSeekable* fork() const { return NULL; } |
| 126 |
| 127 //SkStreamAsset |
| 128 /** Returns true if this stream can report it's total length. */ |
| 129 virtual bool hasLength() const { return false; } |
| 130 /** Returns the total length of the stream. If this cannot be done, returns
0. */ |
| 131 virtual size_t getLength() const { |
| 132 //return 0; |
| 133 //TODO: remove the following after everyone is updated. |
| 134 return ((SkStream*)this)->read(NULL, 0); |
| 135 } |
| 136 |
| 137 //SkStreamMemory |
| 138 /** Returns the starting address for the data. If this cannot be done, retur
ns NULL. */ |
| 139 virtual const void* getMemoryBase() { return NULL; } |
| 140 |
96 private: | 141 private: |
97 typedef SkRefCnt INHERITED; | 142 typedef SkRefCnt INHERITED; |
98 }; | 143 }; |
99 | 144 |
| 145 /** SkStreamRewindable is a SkStream for which rewind and duplicate are required
. */ |
| 146 class SK_API SkStreamRewindable : public SkStream { |
| 147 public: |
| 148 //TODO: remove the following after everyone is updated (ensures new behavior
on new classes). |
| 149 virtual bool atEnd() const SK_OVERRIDE = 0; |
| 150 //TODO: remove the following after everyone is updated (ensures new behavior
on new classes). |
| 151 virtual size_t getLength() const SK_OVERRIDE { return 0; } |
| 152 |
| 153 virtual bool rewind() SK_OVERRIDE = 0; |
| 154 virtual SkStreamRewindable* duplicate() const SK_OVERRIDE = 0; |
| 155 }; |
| 156 |
| 157 /** SkStreamSeekable is a SkStreamRewindable for which position, seek, move, and
fork are required. */ |
| 158 class SK_API SkStreamSeekable : public SkStreamRewindable { |
| 159 public: |
| 160 virtual SkStreamSeekable* duplicate() const SK_OVERRIDE = 0; |
| 161 |
| 162 virtual bool hasPosition() const SK_OVERRIDE { return true; } |
| 163 virtual size_t getPosition() const SK_OVERRIDE = 0; |
| 164 virtual bool seek(size_t position) SK_OVERRIDE = 0; |
| 165 virtual bool move(long offset) SK_OVERRIDE = 0; |
| 166 virtual SkStreamSeekable* fork() const SK_OVERRIDE = 0; |
| 167 }; |
| 168 |
| 169 /** SkStreamAsset is a SkStreamSeekable for which getLength is required. */ |
| 170 class SK_API SkStreamAsset : public SkStreamSeekable { |
| 171 public: |
| 172 virtual SkStreamAsset* duplicate() const SK_OVERRIDE = 0; |
| 173 virtual SkStreamAsset* fork() const SK_OVERRIDE = 0; |
| 174 |
| 175 virtual bool hasLength() const SK_OVERRIDE { return true; } |
| 176 virtual size_t getLength() const SK_OVERRIDE = 0; |
| 177 }; |
| 178 |
| 179 /** SkStreamMemory is a SkStreamAsset for which getMemoryBase is required. */ |
| 180 class SK_API SkStreamMemory : public SkStreamAsset { |
| 181 public: |
| 182 virtual SkStreamMemory* duplicate() const SK_OVERRIDE = 0; |
| 183 virtual SkStreamMemory* fork() const SK_OVERRIDE = 0; |
| 184 |
| 185 virtual const void* getMemoryBase() SK_OVERRIDE = 0; |
| 186 }; |
| 187 |
100 class SK_API SkWStream : SkNoncopyable { | 188 class SK_API SkWStream : SkNoncopyable { |
101 public: | 189 public: |
102 SK_DECLARE_INST_COUNT_ROOT(SkWStream) | 190 SK_DECLARE_INST_COUNT_ROOT(SkWStream) |
103 | 191 |
104 virtual ~SkWStream(); | 192 virtual ~SkWStream(); |
105 | 193 |
106 /** Called to write bytes to a SkWStream. Returns true on success | 194 /** Called to write bytes to a SkWStream. Returns true on success |
107 @param buffer the address of at least size bytes to be written to the st
ream | 195 @param buffer the address of at least size bytes to be written to the st
ream |
108 @param size The number of bytes in buffer to write to the stream | 196 @param size The number of bytes in buffer to write to the stream |
109 @return true on success | 197 @return true on success |
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140 */ | 228 */ |
141 bool writeData(const SkData*); | 229 bool writeData(const SkData*); |
142 }; | 230 }; |
143 | 231 |
144 ////////////////////////////////////////////////////////////////////////////////
//////// | 232 ////////////////////////////////////////////////////////////////////////////////
//////// |
145 | 233 |
146 #include "SkString.h" | 234 #include "SkString.h" |
147 | 235 |
148 struct SkFILE; | 236 struct SkFILE; |
149 | 237 |
150 /** A stream that reads from a FILE*, which is opened in the constructor and | 238 /** A stream that wraps a C FILE* file stream. */ |
151 closed in the destructor | 239 class SK_API SkFILEStream : public SkStreamAsset { |
152 */ | |
153 class SK_API SkFILEStream : public SkStream { | |
154 public: | 240 public: |
155 SK_DECLARE_INST_COUNT(SkFILEStream) | 241 SK_DECLARE_INST_COUNT(SkFILEStream) |
156 | 242 |
157 /** Initialize the stream by calling fopen on the specified path. Will be | 243 /** Initialize the stream by calling sk_fopen on the specified path. |
158 closed in the destructor. | 244 * This internal stream will be closed in the destructor. |
159 */ | 245 */ |
160 explicit SkFILEStream(const char path[] = NULL); | 246 explicit SkFILEStream(const char path[] = NULL); |
| 247 |
| 248 enum Ownership { |
| 249 kCallerPasses_Ownership, |
| 250 kCallerRetains_Ownership |
| 251 }; |
| 252 /** Initialize the stream with an existing C file stream. |
| 253 * While this stream exists, it assumes exclusive access to the C file stre
am. |
| 254 * The C file stream will be closed in the destructor unless the caller spe
cifies |
| 255 * kCallerRetains_Ownership. |
| 256 */ |
| 257 explicit SkFILEStream(FILE* file, Ownership ownership = kCallerPasses_Owners
hip); |
| 258 |
161 virtual ~SkFILEStream(); | 259 virtual ~SkFILEStream(); |
162 | 260 |
163 /** Returns true if the current path could be opened. | 261 /** Returns true if the current path could be opened. */ |
164 */ | |
165 bool isValid() const { return fFILE != NULL; } | 262 bool isValid() const { return fFILE != NULL; } |
166 /** Close the current file, and open a new file with the specified | 263 |
167 path. If path is NULL, just close the current file. | 264 /** Close the current file, and open a new file with the specified path. |
168 */ | 265 * If path is NULL, just close the current file. |
| 266 */ |
169 void setPath(const char path[]); | 267 void setPath(const char path[]); |
170 | 268 |
| 269 virtual size_t read(void* buffer, size_t size) SK_OVERRIDE; |
| 270 virtual bool atEnd() const SK_OVERRIDE; |
| 271 |
171 virtual bool rewind() SK_OVERRIDE; | 272 virtual bool rewind() SK_OVERRIDE; |
172 virtual size_t read(void* buffer, size_t size) SK_OVERRIDE; | 273 virtual SkStreamAsset* duplicate() const SK_OVERRIDE; |
173 virtual const char* getFileName() SK_OVERRIDE; | 274 |
| 275 virtual size_t getPosition() const SK_OVERRIDE; |
| 276 virtual bool seek(size_t position) SK_OVERRIDE; |
| 277 virtual bool move(long offset) SK_OVERRIDE; |
| 278 virtual SkStreamAsset* fork() const SK_OVERRIDE; |
| 279 |
| 280 virtual size_t getLength() const SK_OVERRIDE; |
| 281 |
| 282 const void* getMemoryBase() SK_OVERRIDE; |
174 | 283 |
175 private: | 284 private: |
176 SkFILE* fFILE; | 285 SkFILE* fFILE; |
177 SkString fName; | 286 SkString fName; |
| 287 Ownership fOwnership; |
| 288 // fData is lazilly initialized when needed. |
| 289 mutable SkAutoTUnref<SkData> fData; |
178 | 290 |
179 typedef SkStream INHERITED; | 291 typedef SkStreamAsset INHERITED; |
180 }; | 292 }; |
181 | 293 |
182 /** A stream that reads from a file descriptor | 294 class SK_API SkMemoryStream : public SkStreamMemory { |
183 */ | |
184 class SK_API SkFDStream : public SkStream { | |
185 public: | |
186 SK_DECLARE_INST_COUNT(SkFDStream) | |
187 | |
188 /** Initialize the stream with a dup() of the specified file descriptor. | |
189 If closeWhenDone is true, then the descriptor will be closed in the | |
190 destructor. | |
191 */ | |
192 SkFDStream(int fileDesc, bool closeWhenDone); | |
193 virtual ~SkFDStream(); | |
194 | |
195 /** Returns true if the current path could be opened. | |
196 */ | |
197 bool isValid() const { return fFD >= 0; } | |
198 | |
199 virtual bool rewind() SK_OVERRIDE; | |
200 virtual size_t read(void* buffer, size_t size) SK_OVERRIDE; | |
201 virtual const char* getFileName() SK_OVERRIDE { return NULL; } | |
202 | |
203 private: | |
204 int fFD; | |
205 bool fCloseWhenDone; | |
206 | |
207 typedef SkStream INHERITED; | |
208 }; | |
209 | |
210 class SK_API SkMemoryStream : public SkStream { | |
211 public: | 295 public: |
212 SK_DECLARE_INST_COUNT(SkMemoryStream) | 296 SK_DECLARE_INST_COUNT(SkMemoryStream) |
213 | 297 |
214 SkMemoryStream(); | 298 SkMemoryStream(); |
215 /** We allocate (and free) the memory. Write to it via getMemoryBase() | 299 |
216 */ | 300 /** We allocate (and free) the memory. Write to it via getMemoryBase() */ |
217 SkMemoryStream(size_t length); | 301 SkMemoryStream(size_t length); |
218 /** if copyData is true, the stream makes a private copy of the data | 302 |
219 */ | 303 /** If copyData is true, the stream makes a private copy of the data. */ |
220 SkMemoryStream(const void* data, size_t length, bool copyData = false); | 304 SkMemoryStream(const void* data, size_t length, bool copyData = false); |
221 | 305 |
222 /** | 306 /** Use the specified data as the memory for this stream. |
223 * Use the specified data as the memory for this stream. The stream will | 307 * The stream will call ref() on the data (assuming it is not NULL). |
224 * call ref() on the data (assuming it is not null). | |
225 */ | 308 */ |
226 SkMemoryStream(SkData*); | 309 SkMemoryStream(SkData*); |
227 | 310 |
228 virtual ~SkMemoryStream(); | 311 virtual ~SkMemoryStream(); |
229 | 312 |
230 /** Resets the stream to the specified data and length, | 313 /** Resets the stream to the specified data and length, |
231 just like the constructor. | 314 just like the constructor. |
232 if copyData is true, the stream makes a private copy of the data | 315 if copyData is true, the stream makes a private copy of the data |
233 */ | 316 */ |
234 virtual void setMemory(const void* data, size_t length, | 317 virtual void setMemory(const void* data, size_t length, |
235 bool copyData = false); | 318 bool copyData = false); |
236 /** Replace any memory buffer with the specified buffer. The caller | 319 /** Replace any memory buffer with the specified buffer. The caller |
237 must have allocated data with sk_malloc or sk_realloc, since it | 320 must have allocated data with sk_malloc or sk_realloc, since it |
238 will be freed with sk_free. | 321 will be freed with sk_free. |
239 */ | 322 */ |
240 void setMemoryOwned(const void* data, size_t length); | 323 void setMemoryOwned(const void* data, size_t length); |
241 | 324 |
242 /** | 325 /** Return the stream's data in a SkData. |
243 * Return the stream's data in a SkData. The caller must call unref() when | 326 * The caller must call unref() when it is finished using the data. |
244 * it is finished using the data. | |
245 */ | 327 */ |
246 SkData* copyToData() const; | 328 SkData* copyToData() const; |
247 | 329 |
248 /** | 330 /** |
249 * Use the specified data as the memory for this stream. The stream will | 331 * Use the specified data as the memory for this stream. |
250 * call ref() on the data (assuming it is not null). The function returns | 332 * The stream will call ref() on the data (assuming it is not NULL). |
251 * the data parameter as a convenience. | 333 * The function returns the data parameter as a convenience. |
252 */ | 334 */ |
253 SkData* setData(SkData*); | 335 SkData* setData(SkData*); |
254 | 336 |
255 void skipToAlign4(); | 337 void skipToAlign4(); |
| 338 const void* getAtPos(); |
| 339 size_t peek() const { return fOffset; } |
| 340 |
| 341 virtual size_t read(void* buffer, size_t size) SK_OVERRIDE; |
| 342 virtual bool atEnd() const SK_OVERRIDE; |
| 343 |
256 virtual bool rewind() SK_OVERRIDE; | 344 virtual bool rewind() SK_OVERRIDE; |
257 virtual size_t read(void* buffer, size_t size) SK_OVERRIDE; | 345 virtual SkMemoryStream* duplicate() const SK_OVERRIDE; |
| 346 |
| 347 virtual size_t getPosition() const SK_OVERRIDE; |
| 348 virtual bool seek(size_t position) SK_OVERRIDE; |
| 349 virtual bool move(long offset) SK_OVERRIDE; |
| 350 virtual SkMemoryStream* fork() const SK_OVERRIDE; |
| 351 |
| 352 virtual size_t getLength() const SK_OVERRIDE; |
| 353 |
258 virtual const void* getMemoryBase() SK_OVERRIDE; | 354 virtual const void* getMemoryBase() SK_OVERRIDE; |
259 const void* getAtPos(); | |
260 size_t seek(size_t offset); | |
261 size_t peek() const { return fOffset; } | |
262 | 355 |
263 private: | 356 private: |
264 SkData* fData; | 357 SkData* fData; |
265 size_t fOffset; | 358 size_t fOffset; |
266 | 359 |
267 typedef SkStream INHERITED; | 360 typedef SkStreamMemory INHERITED; |
268 }; | |
269 | |
270 /** \class SkBufferStream | |
271 This is a wrapper class that adds buffering to another stream. | |
272 The caller can provide the buffer, or ask SkBufferStream to allocated/free | |
273 it automatically. | |
274 */ | |
275 class SK_API SkBufferStream : public SkStream { | |
276 public: | |
277 SK_DECLARE_INST_COUNT(SkBufferStream) | |
278 | |
279 /** Provide the stream to be buffered (proxy), and the size of the buffer th
at | |
280 should be used. This will be allocated and freed automatically. If buffe
rSize is 0, | |
281 a default buffer size will be used. | |
282 The proxy stream is referenced, and will be unreferenced in when the | |
283 bufferstream is destroyed. | |
284 */ | |
285 SkBufferStream(SkStream* proxy, size_t bufferSize = 0); | |
286 /** Provide the stream to be buffered (proxy), and a buffer and size to be u
sed. | |
287 This buffer is owned by the caller, and must be at least bufferSize byte
s big. | |
288 Passing NULL for buffer will cause the buffer to be allocated/freed auto
matically. | |
289 If buffer is not NULL, it is an error for bufferSize to be 0. | |
290 The proxy stream is referenced, and will be unreferenced in when the | |
291 bufferstream is destroyed. | |
292 */ | |
293 SkBufferStream(SkStream* proxy, void* buffer, size_t bufferSize); | |
294 virtual ~SkBufferStream(); | |
295 | |
296 virtual bool rewind() SK_OVERRIDE; | |
297 virtual const char* getFileName() SK_OVERRIDE; | |
298 virtual size_t read(void* buffer, size_t size) SK_OVERRIDE; | |
299 virtual const void* getMemoryBase() SK_OVERRIDE; | |
300 | |
301 private: | |
302 enum { | |
303 kDefaultBufferSize = 128 | |
304 }; | |
305 // illegal | |
306 SkBufferStream(const SkBufferStream&); | |
307 SkBufferStream& operator=(const SkBufferStream&); | |
308 | |
309 SkStream* fProxy; | |
310 char* fBuffer; | |
311 size_t fOrigBufferSize, fBufferSize, fBufferOffset; | |
312 bool fWeOwnTheBuffer; | |
313 | |
314 void init(void*, size_t); | |
315 | |
316 typedef SkStream INHERITED; | |
317 }; | 361 }; |
318 | 362 |
319 ////////////////////////////////////////////////////////////////////////////////
///////////// | 363 ////////////////////////////////////////////////////////////////////////////////
///////////// |
320 | 364 |
321 class SK_API SkFILEWStream : public SkWStream { | 365 class SK_API SkFILEWStream : public SkWStream { |
322 public: | 366 public: |
323 SK_DECLARE_INST_COUNT(SkFILEWStream) | 367 SK_DECLARE_INST_COUNT(SkFILEWStream) |
324 | 368 |
325 SkFILEWStream(const char path[]); | 369 SkFILEWStream(const char path[]); |
326 virtual ~SkFILEWStream(); | 370 virtual ~SkFILEWStream(); |
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403 virtual void newline() SK_OVERRIDE; | 447 virtual void newline() SK_OVERRIDE; |
404 | 448 |
405 private: | 449 private: |
406 typedef SkWStream INHERITED; | 450 typedef SkWStream INHERITED; |
407 }; | 451 }; |
408 | 452 |
409 // for now | 453 // for now |
410 typedef SkFILEStream SkURLStream; | 454 typedef SkFILEStream SkURLStream; |
411 | 455 |
412 #endif | 456 #endif |
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