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| 1 // Copyright 2006-2009 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2009 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 2430 | 2430 |
| 2431 // ByteArray headers are not quadword aligned. | 2431 // ByteArray headers are not quadword aligned. |
| 2432 static const int kHeaderSize = Array::kHeaderSize; | 2432 static const int kHeaderSize = Array::kHeaderSize; |
| 2433 static const int kAlignedSize = Array::kAlignedSize; | 2433 static const int kAlignedSize = Array::kAlignedSize; |
| 2434 | 2434 |
| 2435 private: | 2435 private: |
| 2436 DISALLOW_IMPLICIT_CONSTRUCTORS(ByteArray); | 2436 DISALLOW_IMPLICIT_CONSTRUCTORS(ByteArray); |
| 2437 }; | 2437 }; |
| 2438 | 2438 |
| 2439 | 2439 |
| 2440 // PixelArray represents a fixed size byte array with special sematics used for | 2440 // A PixelArray represents a fixed-size byte array with special semantics |
| 2441 // implementing the CanvasPixelArray object. Please see the specification at: | 2441 // used for implementing the CanvasPixelArray object. Please see the |
| 2442 // http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-elemen
t.html#canvaspixelarray | 2442 // specification at: |
| 2443 // In particular write access clamps the values to 0 or 255 if the value | 2443 // http://www.whatwg.org/specs/web-apps/current-work/ |
| 2444 // used is outside this range. | 2444 // multipage/the-canvas-element.html#canvaspixelarray |
| 2445 // In particular, write access clamps the value written to 0 or 255 if the |
| 2446 // value written is outside this range. |
| 2445 class PixelArray: public Array { | 2447 class PixelArray: public Array { |
| 2446 public: | 2448 public: |
| 2447 // [external_pointer]: The pointer to the external memory area backing this | 2449 // [external_pointer]: The pointer to the external memory area backing this |
| 2448 // pixel array. | 2450 // pixel array. |
| 2449 DECL_ACCESSORS(external_pointer, uint8_t) // Pointer to the data store. | 2451 DECL_ACCESSORS(external_pointer, uint8_t) // Pointer to the data store. |
| 2450 | 2452 |
| 2451 // Setter and getter. | 2453 // Setter and getter. |
| 2452 inline uint8_t get(int index); | 2454 inline uint8_t get(int index); |
| 2453 inline void set(int index, uint8_t value); | 2455 inline void set(int index, uint8_t value); |
| 2454 | 2456 |
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| 4784 } else { | 4786 } else { |
| 4785 value &= ~(1 << bit_position); | 4787 value &= ~(1 << bit_position); |
| 4786 } | 4788 } |
| 4787 return value; | 4789 return value; |
| 4788 } | 4790 } |
| 4789 }; | 4791 }; |
| 4790 | 4792 |
| 4791 } } // namespace v8::internal | 4793 } } // namespace v8::internal |
| 4792 | 4794 |
| 4793 #endif // V8_OBJECTS_H_ | 4795 #endif // V8_OBJECTS_H_ |
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