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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 #ifndef SkImageFilter_DEFINED | 8 #ifndef SkImageFilter_DEFINED |
9 #define SkImageFilter_DEFINED | 9 #define SkImageFilter_DEFINED |
10 | 10 |
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227 * Returns true (and optionally returns a ref'd filter) if this imagefilter can be completely | 227 * Returns true (and optionally returns a ref'd filter) if this imagefilter can be completely |
228 * replaced by the returned colorfilter. i.e. the two effects will affect d rawing in the | 228 * replaced by the returned colorfilter. i.e. the two effects will affect d rawing in the |
229 * same way. | 229 * same way. |
230 */ | 230 */ |
231 bool asAColorFilter(SkColorFilter** filterPtr) const; | 231 bool asAColorFilter(SkColorFilter** filterPtr) const; |
232 | 232 |
233 /** | 233 /** |
234 * Returns the number of inputs this filter will accept (some inputs can | 234 * Returns the number of inputs this filter will accept (some inputs can |
235 * be NULL). | 235 * be NULL). |
236 */ | 236 */ |
237 int countInputs() const { return fInputCount; } | 237 int countInputs() const { return fInputs.count(); } |
238 | 238 |
239 /** | 239 /** |
240 * Returns the input filter at a given index, or NULL if no input is | 240 * Returns the input filter at a given index, or NULL if no input is |
241 * connected. The indices used are filter-specific. | 241 * connected. The indices used are filter-specific. |
242 */ | 242 */ |
243 SkImageFilter* getInput(int i) const { | 243 SkImageFilter* getInput(int i) const { |
244 SkASSERT(i < fInputCount); | 244 SkASSERT(i < fInputs.count()); |
245 return fInputs[i]; | 245 return fInputs[i].get(); |
246 } | 246 } |
247 | 247 |
248 /** | 248 /** |
249 * Returns whether any edges of the crop rect have been set. The crop | 249 * Returns whether any edges of the crop rect have been set. The crop |
250 * rect is set at construction time, and determines which pixels from the | 250 * rect is set at construction time, and determines which pixels from the |
251 * input image will be processed, and which pixels in the output image will be allowed. | 251 * input image will be processed, and which pixels in the output image will be allowed. |
252 * The size of the crop rect should be | 252 * The size of the crop rect should be |
253 * used as the size of the destination image. The origin of this rect | 253 * used as the size of the destination image. The origin of this rect |
254 * should be used to offset access to the input images, and should also | 254 * should be used to offset access to the input images, and should also |
255 * be added to the "offset" parameter in onFilterImage and | 255 * be added to the "offset" parameter in onFilterImage and |
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323 * be left uninitialized. | 323 * be left uninitialized. |
324 * If this returns true, then inputCount() is the number of found input filters, each | 324 * If this returns true, then inputCount() is the number of found input filters, each |
325 * of which may be NULL or a valid imagefilter. | 325 * of which may be NULL or a valid imagefilter. |
326 */ | 326 */ |
327 bool unflatten(SkReadBuffer&, int expectedInputs); | 327 bool unflatten(SkReadBuffer&, int expectedInputs); |
328 | 328 |
329 const CropRect& cropRect() const { return fCropRect; } | 329 const CropRect& cropRect() const { return fCropRect; } |
330 int inputCount() const { return fInputs.count(); } | 330 int inputCount() const { return fInputs.count(); } |
331 sk_sp<SkImageFilter>* inputs() const { return fInputs.get(); } | 331 sk_sp<SkImageFilter>* inputs() const { return fInputs.get(); } |
332 | 332 |
333 sk_sp<SkImageFilter> getInput(int index) const { return fInputs[index]; } | 333 sk_sp<SkImageFilter> getInput(int index) const { return fInputs[index]; } |
reed1
2016/04/15 16:33:43
why does this getInput return sp, and the earlier
robertphillips
2016/04/15 16:56:04
Callers of this method intend to take a ref on the
| |
334 | 334 |
335 // If the caller wants a copy of the inputs, call this and it will trans fer ownership | |
336 // of the unflattened input filters to the caller. This is just a short- cut for copying | |
337 // the inputs, calling ref() on each, and then waiting for Common's dest ructor to call | |
338 // unref() on each. | |
339 void detachInputs(SkImageFilter** inputs); | |
340 | |
341 private: | 335 private: |
342 CropRect fCropRect; | 336 CropRect fCropRect; |
343 // most filters accept at most 2 input-filters | 337 // most filters accept at most 2 input-filters |
344 SkAutoSTArray<2, sk_sp<SkImageFilter>> fInputs; | 338 SkAutoSTArray<2, sk_sp<SkImageFilter>> fInputs; |
345 | 339 |
346 void allocInputs(int count); | 340 void allocInputs(int count); |
347 }; | 341 }; |
348 | 342 |
349 SkImageFilter(int inputCount, SkImageFilter** inputs, const CropRect* cropRe ct = nullptr); | |
350 | |
351 SkImageFilter(sk_sp<SkImageFilter>* inputs, int inputCount, const CropRect* cropRect); | 343 SkImageFilter(sk_sp<SkImageFilter>* inputs, int inputCount, const CropRect* cropRect); |
352 | 344 |
353 virtual ~SkImageFilter(); | 345 virtual ~SkImageFilter(); |
354 | 346 |
355 /** | 347 /** |
356 * Constructs a new SkImageFilter read from an SkReadBuffer object. | 348 * Constructs a new SkImageFilter read from an SkReadBuffer object. |
357 * | 349 * |
358 * @param inputCount The exact number of inputs expected for this SkImag eFilter object. | 350 * @param inputCount The exact number of inputs expected for this SkImag eFilter object. |
359 * -1 can be used if the filter accepts any number of inputs. | 351 * -1 can be used if the filter accepts any number of inputs. |
360 * @param rb SkReadBuffer object from which the SkImageFilter is read. | 352 * @param rb SkReadBuffer object from which the SkImageFilter is read. |
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459 * The clip bounds are adjusted to accommodate any margins that this | 451 * The clip bounds are adjusted to accommodate any margins that this |
460 * filter requires by calling this node's | 452 * filter requires by calling this node's |
461 * onFilterNodeBounds(..., kReverse_MapDirection). | 453 * onFilterNodeBounds(..., kReverse_MapDirection). |
462 */ | 454 */ |
463 Context mapContext(const Context& ctx) const; | 455 Context mapContext(const Context& ctx) const; |
464 | 456 |
465 private: | 457 private: |
466 friend class SkGraphics; | 458 friend class SkGraphics; |
467 static void PurgeCache(); | 459 static void PurgeCache(); |
468 | 460 |
461 void init(sk_sp<SkImageFilter>* inputs, int inputCount, const CropRect* crop Rect); | |
469 bool filterImageDeprecated(Proxy*, const SkBitmap& src, const Context&, | 462 bool filterImageDeprecated(Proxy*, const SkBitmap& src, const Context&, |
470 SkBitmap* result, SkIPoint* offset) const; | 463 SkBitmap* result, SkIPoint* offset) const; |
471 | 464 |
472 bool usesSrcInput() const { return fUsesSrcInput; } | 465 bool usesSrcInput() const { return fUsesSrcInput; } |
473 virtual bool affectsTransparentBlack() const { return false; } | 466 virtual bool affectsTransparentBlack() const { return false; } |
474 | 467 |
475 typedef SkFlattenable INHERITED; | 468 SkAutoSTArray<2, sk_sp<SkImageFilter>> fInputs; |
476 int fInputCount; | 469 |
477 SkImageFilter** fInputs; | |
478 bool fUsesSrcInput; | 470 bool fUsesSrcInput; |
479 CropRect fCropRect; | 471 CropRect fCropRect; |
480 uint32_t fUniqueID; // Globally unique | 472 uint32_t fUniqueID; // Globally unique |
481 mutable SkTArray<Cache::Key> fCacheKeys; | 473 mutable SkTArray<Cache::Key> fCacheKeys; |
482 mutable SkMutex fMutex; | 474 mutable SkMutex fMutex; |
475 typedef SkFlattenable INHERITED; | |
483 }; | 476 }; |
484 | 477 |
485 /** | 478 /** |
486 * Helper to unflatten the common data, and return NULL if we fail. | 479 * Helper to unflatten the common data, and return NULL if we fail. |
487 */ | 480 */ |
488 #define SK_IMAGEFILTER_UNFLATTEN_COMMON(localVar, expectedCount) \ | 481 #define SK_IMAGEFILTER_UNFLATTEN_COMMON(localVar, expectedCount) \ |
489 Common localVar; \ | 482 Common localVar; \ |
490 do { \ | 483 do { \ |
491 if (!localVar.unflatten(buffer, expectedCount)) { \ | 484 if (!localVar.unflatten(buffer, expectedCount)) { \ |
492 return NULL; \ | 485 return NULL; \ |
493 } \ | 486 } \ |
494 } while (0) | 487 } while (0) |
495 | 488 |
496 #endif | 489 #endif |
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