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| 1 /* | 1 /* |
| 2 * Copyright (C) 2009 Apple Inc. All rights reserved. | 2 * Copyright (C) 2009 Apple Inc. All rights reserved. |
| 3 * Copyright (C) 2009 Google Inc. All rights reserved. | 3 * Copyright (C) 2009 Google Inc. All rights reserved. |
| 4 * Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). | 4 * Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). |
| 5 * | 5 * |
| 6 * Redistribution and use in source and binary forms, with or without | 6 * Redistribution and use in source and binary forms, with or without |
| 7 * modification, are permitted provided that the following conditions | 7 * modification, are permitted provided that the following conditions |
| 8 * are met: | 8 * are met: |
| 9 * 1. Redistributions of source code must retain the above copyright | 9 * 1. Redistributions of source code must retain the above copyright |
| 10 * notice, this list of conditions and the following disclaimer. | 10 * notice, this list of conditions and the following disclaimer. |
| (...skipping 16 matching lines...) Expand all Loading... |
| 27 | 27 |
| 28 #ifndef Uint8ClampedArray_h | 28 #ifndef Uint8ClampedArray_h |
| 29 #define Uint8ClampedArray_h | 29 #define Uint8ClampedArray_h |
| 30 | 30 |
| 31 #include "wtf/Uint8Array.h" | 31 #include "wtf/Uint8Array.h" |
| 32 #include "wtf/MathExtras.h" | 32 #include "wtf/MathExtras.h" |
| 33 | 33 |
| 34 namespace WTF { | 34 namespace WTF { |
| 35 | 35 |
| 36 class Uint8ClampedArray final : public Uint8Array { | 36 class Uint8ClampedArray final : public Uint8Array { |
| 37 public: | 37 public: |
| 38 static inline PassRefPtr<Uint8ClampedArray> create(unsigned length); | 38 static inline PassRefPtr<Uint8ClampedArray> create(unsigned length); |
| 39 static inline PassRefPtr<Uint8ClampedArray> create(const unsigned char* arra
y, unsigned length); | 39 static inline PassRefPtr<Uint8ClampedArray> create(const unsigned char* array, |
| 40 static inline PassRefPtr<Uint8ClampedArray> create(PassRefPtr<ArrayBuffer>,
unsigned byteOffset, unsigned length); | 40 unsigned length); |
| 41 static inline PassRefPtr<Uint8ClampedArray> create(PassRefPtr<ArrayBuffer>, |
| 42 unsigned byteOffset, |
| 43 unsigned length); |
| 41 | 44 |
| 42 using TypedArrayBase<unsigned char>::set; | 45 using TypedArrayBase<unsigned char>::set; |
| 43 inline void set(unsigned index, double value); | 46 inline void set(unsigned index, double value); |
| 44 | 47 |
| 45 ViewType type() const override | 48 ViewType type() const override { return TypeUint8Clamped; } |
| 46 { | |
| 47 return TypeUint8Clamped; | |
| 48 } | |
| 49 | 49 |
| 50 private: | 50 private: |
| 51 inline Uint8ClampedArray(PassRefPtr<ArrayBuffer>, unsigned byteOffset, unsig
ned length); | 51 inline Uint8ClampedArray(PassRefPtr<ArrayBuffer>, |
| 52 // Make constructor visible to superclass. | 52 unsigned byteOffset, |
| 53 friend class TypedArrayBase<unsigned char>; | 53 unsigned length); |
| 54 // Make constructor visible to superclass. |
| 55 friend class TypedArrayBase<unsigned char>; |
| 54 }; | 56 }; |
| 55 | 57 |
| 56 PassRefPtr<Uint8ClampedArray> Uint8ClampedArray::create(unsigned length) | 58 PassRefPtr<Uint8ClampedArray> Uint8ClampedArray::create(unsigned length) { |
| 57 { | 59 return TypedArrayBase<unsigned char>::create<Uint8ClampedArray>(length); |
| 58 return TypedArrayBase<unsigned char>::create<Uint8ClampedArray>(length); | |
| 59 } | 60 } |
| 60 | 61 |
| 61 PassRefPtr<Uint8ClampedArray> Uint8ClampedArray::create(const unsigned char* arr
ay, unsigned length) | 62 PassRefPtr<Uint8ClampedArray> Uint8ClampedArray::create( |
| 62 { | 63 const unsigned char* array, |
| 63 return TypedArrayBase<unsigned char>::create<Uint8ClampedArray>(array, lengt
h); | 64 unsigned length) { |
| 65 return TypedArrayBase<unsigned char>::create<Uint8ClampedArray>(array, |
| 66 length); |
| 64 } | 67 } |
| 65 | 68 |
| 66 PassRefPtr<Uint8ClampedArray> Uint8ClampedArray::create(PassRefPtr<ArrayBuffer>
buffer, unsigned byteOffset, unsigned length) | 69 PassRefPtr<Uint8ClampedArray> Uint8ClampedArray::create( |
| 67 { | 70 PassRefPtr<ArrayBuffer> buffer, |
| 68 return TypedArrayBase<unsigned char>::create<Uint8ClampedArray>(buffer, byte
Offset, length); | 71 unsigned byteOffset, |
| 72 unsigned length) { |
| 73 return TypedArrayBase<unsigned char>::create<Uint8ClampedArray>( |
| 74 buffer, byteOffset, length); |
| 69 } | 75 } |
| 70 | 76 |
| 71 void Uint8ClampedArray::set(unsigned index, double value) | 77 void Uint8ClampedArray::set(unsigned index, double value) { |
| 72 { | 78 if (index >= m_length) |
| 73 if (index >= m_length) | 79 return; |
| 74 return; | 80 if (std::isnan(value) || value < 0) |
| 75 if (std::isnan(value) || value < 0) | 81 value = 0; |
| 76 value = 0; | 82 else if (value > 255) |
| 77 else if (value > 255) | 83 value = 255; |
| 78 value = 255; | 84 data()[index] = static_cast<unsigned char>(lrint(value)); |
| 79 data()[index] = static_cast<unsigned char>(lrint(value)); | |
| 80 } | 85 } |
| 81 | 86 |
| 82 Uint8ClampedArray::Uint8ClampedArray(PassRefPtr<ArrayBuffer> buffer, unsigned by
teOffset, unsigned length) | 87 Uint8ClampedArray::Uint8ClampedArray(PassRefPtr<ArrayBuffer> buffer, |
| 83 : Uint8Array(buffer, byteOffset, length) | 88 unsigned byteOffset, |
| 84 { | 89 unsigned length) |
| 85 } | 90 : Uint8Array(buffer, byteOffset, length) {} |
| 86 | 91 |
| 87 } // namespace WTF | 92 } // namespace WTF |
| 88 | 93 |
| 89 using WTF::Uint8ClampedArray; | 94 using WTF::Uint8ClampedArray; |
| 90 | 95 |
| 91 #endif // Uint8ClampedArray_h | 96 #endif // Uint8ClampedArray_h |
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