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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 |
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| 123 | 123 |
| 124 //SkStreamMemory | 124 //SkStreamMemory |
| 125 /** Returns the starting address for the data. If this cannot be done, retur
ns NULL. */ | 125 /** Returns the starting address for the data. If this cannot be done, retur
ns NULL. */ |
| 126 //TODO: replace with virtual const SkData* getData() | 126 //TODO: replace with virtual const SkData* getData() |
| 127 virtual const void* getMemoryBase() { return NULL; } | 127 virtual const void* getMemoryBase() { return NULL; } |
| 128 }; | 128 }; |
| 129 | 129 |
| 130 /** SkStreamRewindable is a SkStream for which rewind and duplicate are required
. */ | 130 /** SkStreamRewindable is a SkStream for which rewind and duplicate are required
. */ |
| 131 class SK_API SkStreamRewindable : public SkStream { | 131 class SK_API SkStreamRewindable : public SkStream { |
| 132 public: | 132 public: |
| 133 bool rewind() SK_OVERRIDE = 0; | 133 bool rewind() override = 0; |
| 134 SkStreamRewindable* duplicate() const SK_OVERRIDE = 0; | 134 SkStreamRewindable* duplicate() const override = 0; |
| 135 }; | 135 }; |
| 136 | 136 |
| 137 /** SkStreamSeekable is a SkStreamRewindable for which position, seek, move, and
fork are required. */ | 137 /** SkStreamSeekable is a SkStreamRewindable for which position, seek, move, and
fork are required. */ |
| 138 class SK_API SkStreamSeekable : public SkStreamRewindable { | 138 class SK_API SkStreamSeekable : public SkStreamRewindable { |
| 139 public: | 139 public: |
| 140 SkStreamSeekable* duplicate() const SK_OVERRIDE = 0; | 140 SkStreamSeekable* duplicate() const override = 0; |
| 141 | 141 |
| 142 bool hasPosition() const SK_OVERRIDE { return true; } | 142 bool hasPosition() const override { return true; } |
| 143 size_t getPosition() const SK_OVERRIDE = 0; | 143 size_t getPosition() const override = 0; |
| 144 bool seek(size_t position) SK_OVERRIDE = 0; | 144 bool seek(size_t position) override = 0; |
| 145 bool move(long offset) SK_OVERRIDE = 0; | 145 bool move(long offset) override = 0; |
| 146 SkStreamSeekable* fork() const SK_OVERRIDE = 0; | 146 SkStreamSeekable* fork() const override = 0; |
| 147 }; | 147 }; |
| 148 | 148 |
| 149 /** SkStreamAsset is a SkStreamSeekable for which getLength is required. */ | 149 /** SkStreamAsset is a SkStreamSeekable for which getLength is required. */ |
| 150 class SK_API SkStreamAsset : public SkStreamSeekable { | 150 class SK_API SkStreamAsset : public SkStreamSeekable { |
| 151 public: | 151 public: |
| 152 SkStreamAsset* duplicate() const SK_OVERRIDE = 0; | 152 SkStreamAsset* duplicate() const override = 0; |
| 153 SkStreamAsset* fork() const SK_OVERRIDE = 0; | 153 SkStreamAsset* fork() const override = 0; |
| 154 | 154 |
| 155 bool hasLength() const SK_OVERRIDE { return true; } | 155 bool hasLength() const override { return true; } |
| 156 size_t getLength() const SK_OVERRIDE = 0; | 156 size_t getLength() const override = 0; |
| 157 }; | 157 }; |
| 158 | 158 |
| 159 /** SkStreamMemory is a SkStreamAsset for which getMemoryBase is required. */ | 159 /** SkStreamMemory is a SkStreamAsset for which getMemoryBase is required. */ |
| 160 class SK_API SkStreamMemory : public SkStreamAsset { | 160 class SK_API SkStreamMemory : public SkStreamAsset { |
| 161 public: | 161 public: |
| 162 SkStreamMemory* duplicate() const SK_OVERRIDE = 0; | 162 SkStreamMemory* duplicate() const override = 0; |
| 163 SkStreamMemory* fork() const SK_OVERRIDE = 0; | 163 SkStreamMemory* fork() const override = 0; |
| 164 | 164 |
| 165 const void* getMemoryBase() SK_OVERRIDE = 0; | 165 const void* getMemoryBase() override = 0; |
| 166 }; | 166 }; |
| 167 | 167 |
| 168 class SK_API SkWStream : SkNoncopyable { | 168 class SK_API SkWStream : SkNoncopyable { |
| 169 public: | 169 public: |
| 170 SK_DECLARE_INST_COUNT(SkWStream) | 170 SK_DECLARE_INST_COUNT(SkWStream) |
| 171 | 171 |
| 172 virtual ~SkWStream(); | 172 virtual ~SkWStream(); |
| 173 | 173 |
| 174 /** Called to write bytes to a SkWStream. Returns true on success | 174 /** Called to write bytes to a SkWStream. Returns true on success |
| 175 @param buffer the address of at least size bytes to be written to the st
ream | 175 @param buffer the address of at least size bytes to be written to the st
ream |
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| 238 virtual ~SkFILEStream(); | 238 virtual ~SkFILEStream(); |
| 239 | 239 |
| 240 /** Returns true if the current path could be opened. */ | 240 /** Returns true if the current path could be opened. */ |
| 241 bool isValid() const { return fFILE != NULL; } | 241 bool isValid() const { return fFILE != NULL; } |
| 242 | 242 |
| 243 /** Close the current file, and open a new file with the specified path. | 243 /** Close the current file, and open a new file with the specified path. |
| 244 * If path is NULL, just close the current file. | 244 * If path is NULL, just close the current file. |
| 245 */ | 245 */ |
| 246 void setPath(const char path[]); | 246 void setPath(const char path[]); |
| 247 | 247 |
| 248 size_t read(void* buffer, size_t size) SK_OVERRIDE; | 248 size_t read(void* buffer, size_t size) override; |
| 249 bool isAtEnd() const SK_OVERRIDE; | 249 bool isAtEnd() const override; |
| 250 | 250 |
| 251 bool rewind() SK_OVERRIDE; | 251 bool rewind() override; |
| 252 SkStreamAsset* duplicate() const SK_OVERRIDE; | 252 SkStreamAsset* duplicate() const override; |
| 253 | 253 |
| 254 size_t getPosition() const SK_OVERRIDE; | 254 size_t getPosition() const override; |
| 255 bool seek(size_t position) SK_OVERRIDE; | 255 bool seek(size_t position) override; |
| 256 bool move(long offset) SK_OVERRIDE; | 256 bool move(long offset) override; |
| 257 SkStreamAsset* fork() const SK_OVERRIDE; | 257 SkStreamAsset* fork() const override; |
| 258 | 258 |
| 259 size_t getLength() const SK_OVERRIDE; | 259 size_t getLength() const override; |
| 260 | 260 |
| 261 const void* getMemoryBase() SK_OVERRIDE; | 261 const void* getMemoryBase() override; |
| 262 | 262 |
| 263 private: | 263 private: |
| 264 SkFILE* fFILE; | 264 SkFILE* fFILE; |
| 265 SkString fName; | 265 SkString fName; |
| 266 Ownership fOwnership; | 266 Ownership fOwnership; |
| 267 // fData is lazilly initialized when needed. | 267 // fData is lazilly initialized when needed. |
| 268 mutable SkAutoTUnref<SkData> fData; | 268 mutable SkAutoTUnref<SkData> fData; |
| 269 | 269 |
| 270 typedef SkStreamAsset INHERITED; | 270 typedef SkStreamAsset INHERITED; |
| 271 }; | 271 }; |
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| 310 * Use the specified data as the memory for this stream. | 310 * Use the specified data as the memory for this stream. |
| 311 * The stream will call ref() on the data (assuming it is not NULL). | 311 * The stream will call ref() on the data (assuming it is not NULL). |
| 312 * The function returns the data parameter as a convenience. | 312 * The function returns the data parameter as a convenience. |
| 313 */ | 313 */ |
| 314 SkData* setData(SkData*); | 314 SkData* setData(SkData*); |
| 315 | 315 |
| 316 void skipToAlign4(); | 316 void skipToAlign4(); |
| 317 const void* getAtPos(); | 317 const void* getAtPos(); |
| 318 size_t peek() const { return fOffset; } | 318 size_t peek() const { return fOffset; } |
| 319 | 319 |
| 320 size_t read(void* buffer, size_t size) SK_OVERRIDE; | 320 size_t read(void* buffer, size_t size) override; |
| 321 bool isAtEnd() const SK_OVERRIDE; | 321 bool isAtEnd() const override; |
| 322 | 322 |
| 323 bool rewind() SK_OVERRIDE; | 323 bool rewind() override; |
| 324 SkMemoryStream* duplicate() const SK_OVERRIDE; | 324 SkMemoryStream* duplicate() const override; |
| 325 | 325 |
| 326 size_t getPosition() const SK_OVERRIDE; | 326 size_t getPosition() const override; |
| 327 bool seek(size_t position) SK_OVERRIDE; | 327 bool seek(size_t position) override; |
| 328 bool move(long offset) SK_OVERRIDE; | 328 bool move(long offset) override; |
| 329 SkMemoryStream* fork() const SK_OVERRIDE; | 329 SkMemoryStream* fork() const override; |
| 330 | 330 |
| 331 size_t getLength() const SK_OVERRIDE; | 331 size_t getLength() const override; |
| 332 | 332 |
| 333 const void* getMemoryBase() SK_OVERRIDE; | 333 const void* getMemoryBase() override; |
| 334 | 334 |
| 335 private: | 335 private: |
| 336 SkData* fData; | 336 SkData* fData; |
| 337 size_t fOffset; | 337 size_t fOffset; |
| 338 | 338 |
| 339 typedef SkStreamMemory INHERITED; | 339 typedef SkStreamMemory INHERITED; |
| 340 }; | 340 }; |
| 341 | 341 |
| 342 ////////////////////////////////////////////////////////////////////////////////
///////////// | 342 ////////////////////////////////////////////////////////////////////////////////
///////////// |
| 343 | 343 |
| 344 class SK_API SkFILEWStream : public SkWStream { | 344 class SK_API SkFILEWStream : public SkWStream { |
| 345 public: | 345 public: |
| 346 SK_DECLARE_INST_COUNT(SkFILEWStream) | 346 SK_DECLARE_INST_COUNT(SkFILEWStream) |
| 347 | 347 |
| 348 SkFILEWStream(const char path[]); | 348 SkFILEWStream(const char path[]); |
| 349 virtual ~SkFILEWStream(); | 349 virtual ~SkFILEWStream(); |
| 350 | 350 |
| 351 /** Returns true if the current path could be opened. | 351 /** Returns true if the current path could be opened. |
| 352 */ | 352 */ |
| 353 bool isValid() const { return fFILE != NULL; } | 353 bool isValid() const { return fFILE != NULL; } |
| 354 | 354 |
| 355 bool write(const void* buffer, size_t size) SK_OVERRIDE; | 355 bool write(const void* buffer, size_t size) override; |
| 356 void flush() SK_OVERRIDE; | 356 void flush() override; |
| 357 size_t bytesWritten() const SK_OVERRIDE; | 357 size_t bytesWritten() const override; |
| 358 | 358 |
| 359 private: | 359 private: |
| 360 SkFILE* fFILE; | 360 SkFILE* fFILE; |
| 361 | 361 |
| 362 typedef SkWStream INHERITED; | 362 typedef SkWStream INHERITED; |
| 363 }; | 363 }; |
| 364 | 364 |
| 365 class SkMemoryWStream : public SkWStream { | 365 class SkMemoryWStream : public SkWStream { |
| 366 public: | 366 public: |
| 367 SK_DECLARE_INST_COUNT(SkMemoryWStream) | 367 SK_DECLARE_INST_COUNT(SkMemoryWStream) |
| 368 | 368 |
| 369 SkMemoryWStream(void* buffer, size_t size); | 369 SkMemoryWStream(void* buffer, size_t size); |
| 370 bool write(const void* buffer, size_t size) SK_OVERRIDE; | 370 bool write(const void* buffer, size_t size) override; |
| 371 size_t bytesWritten() const SK_OVERRIDE { return fBytesWritten; } | 371 size_t bytesWritten() const override { return fBytesWritten; } |
| 372 | 372 |
| 373 private: | 373 private: |
| 374 char* fBuffer; | 374 char* fBuffer; |
| 375 size_t fMaxLength; | 375 size_t fMaxLength; |
| 376 size_t fBytesWritten; | 376 size_t fBytesWritten; |
| 377 | 377 |
| 378 typedef SkWStream INHERITED; | 378 typedef SkWStream INHERITED; |
| 379 }; | 379 }; |
| 380 | 380 |
| 381 class SK_API SkDynamicMemoryWStream : public SkWStream { | 381 class SK_API SkDynamicMemoryWStream : public SkWStream { |
| 382 public: | 382 public: |
| 383 SK_DECLARE_INST_COUNT(SkDynamicMemoryWStream) | 383 SK_DECLARE_INST_COUNT(SkDynamicMemoryWStream) |
| 384 | 384 |
| 385 SkDynamicMemoryWStream(); | 385 SkDynamicMemoryWStream(); |
| 386 virtual ~SkDynamicMemoryWStream(); | 386 virtual ~SkDynamicMemoryWStream(); |
| 387 | 387 |
| 388 bool write(const void* buffer, size_t size) SK_OVERRIDE; | 388 bool write(const void* buffer, size_t size) override; |
| 389 size_t bytesWritten() const SK_OVERRIDE { return fBytesWritten; } | 389 size_t bytesWritten() const override { return fBytesWritten; } |
| 390 // random access write | 390 // random access write |
| 391 // modifies stream and returns true if offset + size is less than or equal t
o getOffset() | 391 // modifies stream and returns true if offset + size is less than or equal t
o getOffset() |
| 392 bool write(const void* buffer, size_t offset, size_t size); | 392 bool write(const void* buffer, size_t offset, size_t size); |
| 393 bool read(void* buffer, size_t offset, size_t size); | 393 bool read(void* buffer, size_t offset, size_t size); |
| 394 size_t getOffset() const { return fBytesWritten; } | 394 size_t getOffset() const { return fBytesWritten; } |
| 395 | 395 |
| 396 // copy what has been written to the stream into dst | 396 // copy what has been written to the stream into dst |
| 397 void copyTo(void* dst) const; | 397 void copyTo(void* dst) const; |
| 398 void writeToStream(SkWStream* dst) const; | 398 void writeToStream(SkWStream* dst) const; |
| 399 | 399 |
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| 425 typedef SkWStream INHERITED; | 425 typedef SkWStream INHERITED; |
| 426 }; | 426 }; |
| 427 | 427 |
| 428 | 428 |
| 429 class SK_API SkDebugWStream : public SkWStream { | 429 class SK_API SkDebugWStream : public SkWStream { |
| 430 public: | 430 public: |
| 431 SkDebugWStream() : fBytesWritten(0) {} | 431 SkDebugWStream() : fBytesWritten(0) {} |
| 432 SK_DECLARE_INST_COUNT(SkDebugWStream) | 432 SK_DECLARE_INST_COUNT(SkDebugWStream) |
| 433 | 433 |
| 434 // overrides | 434 // overrides |
| 435 bool write(const void* buffer, size_t size) SK_OVERRIDE; | 435 bool write(const void* buffer, size_t size) override; |
| 436 void newline() SK_OVERRIDE; | 436 void newline() override; |
| 437 size_t bytesWritten() const SK_OVERRIDE { return fBytesWritten; } | 437 size_t bytesWritten() const override { return fBytesWritten; } |
| 438 | 438 |
| 439 private: | 439 private: |
| 440 size_t fBytesWritten; | 440 size_t fBytesWritten; |
| 441 typedef SkWStream INHERITED; | 441 typedef SkWStream INHERITED; |
| 442 }; | 442 }; |
| 443 | 443 |
| 444 // for now | 444 // for now |
| 445 typedef SkFILEStream SkURLStream; | 445 typedef SkFILEStream SkURLStream; |
| 446 | 446 |
| 447 #endif | 447 #endif |
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