1 /* 2 * Copyright (C) 2009 Apple Inc. All rights reserved. 3 * Copyright (C) 2009 Google Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef Float32Array_h 28 #define Float32Array_h 29 30 #include "wtf/TypedArrayBase.h" 31 #include "wtf/MathExtras.h" 32 33 namespace WTF { 34 35 class Float32Array : public TypedArrayBase<float> { 36 public: 37 static inline PassRefPtr<Float32Array> create(unsigned length); 38 static inline PassRefPtr<Float32Array> create(const float* array, unsigned length); 39 static inline PassRefPtr<Float32Array> create(PassRefPtr<ArrayBuffer>, unsigned byteOffset, unsigned length); 40 41 // Should only be used when it is known the entire array will be filled. Do 42 // not return these results directly to JavaScript without filling first. 43 static inline PassRefPtr<Float32Array> createUninitialized(unsigned length); 44 45 using TypedArrayBase<float>::set; 46 47 void set(unsigned index, double value) 48 { 49 if (index >= TypedArrayBase<float>::m_length) 50 return; 51 TypedArrayBase<float>::data()[index] = static_cast<float>(value); 52 } 53 54 inline PassRefPtr<Float32Array> subarray(int start) const; 55 inline PassRefPtr<Float32Array> subarray(int start, int end) const; 56 57 virtual ViewType getType() const 58 { 59 return TypeFloat32; 60 } 61 62 private: 63 inline Float32Array(PassRefPtr<ArrayBuffer>, 64 unsigned byteOffset, 65 unsigned length); 66 // Make constructor visible to superclass. 67 friend class TypedArrayBase<float>; 68 }; 69 70 PassRefPtr<Float32Array> Float32Array::create(unsigned length) 71 { 72 return TypedArrayBase<float>::create<Float32Array>(length); 73 } 74 75 PassRefPtr<Float32Array> Float32Array::create(const float* array, unsigned length) 76 { 77 return TypedArrayBase<float>::create<Float32Array>(array, length); 78 } 79 80 PassRefPtr<Float32Array> Float32Array::create(PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset, unsigned length) 81 { 82 return TypedArrayBase<float>::create<Float32Array>(buffer, byteOffset, length); 83 } 84 85 PassRefPtr<Float32Array> Float32Array::createUninitialized(unsigned length) 86 { 87 return TypedArrayBase<float>::createUninitialized<Float32Array>(length); 88 } 89 90 Float32Array::Float32Array(PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset, unsigned length) 91 : TypedArrayBase<float>(buffer, byteOffset, length) 92 { 93 } 94 95 PassRefPtr<Float32Array> Float32Array::subarray(int start) const 96 { 97 return subarray(start, length()); 98 } 99 100 PassRefPtr<Float32Array> Float32Array::subarray(int start, int end) const 101 { 102 return subarrayImpl<Float32Array>(start, end); 103 } 104 105 } // namespace WTF 106 107 using WTF::Float32Array; 108 109 #endif // Float32Array_h 110
