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 "TypedArrayBase.h" 31 #include <wtf/MathExtras.h> 32 33 namespace WebCore { 34 35 class Float32Array : public TypedArrayBase<float> { 36 public: 37 static PassRefPtr<Float32Array> create(unsigned length); 38 static PassRefPtr<Float32Array> create(const float* array, unsigned length); 39 static PassRefPtr<Float32Array> create(PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset, unsigned length); 40 41 using TypedArrayBase<float>::set; 42 43 void set(unsigned index, double value) 44 { 45 if (index >= TypedArrayBase<float>::m_length) 46 return; 47 TypedArrayBase<float>::data()[index] = static_cast<float>(value); 48 } 49 50 // Invoked by the indexed getter. Does not perform range checks; caller 51 // is responsible for doing so and returning undefined as necessary. 52 float item(unsigned index) const 53 { 54 ASSERT(index < TypedArrayBase<float>::m_length); 55 float result = TypedArrayBase<float>::data()[index]; 56 return result; 57 } 58 59 PassRefPtr<Float32Array> subarray(int start) const; 60 PassRefPtr<Float32Array> subarray(int start, int end) const; 61 62 private: 63 Float32Array(PassRefPtr<ArrayBuffer> buffer, 64 unsigned byteOffset, 65 unsigned length); 66 // Make constructor visible to superclass. 67 friend class TypedArrayBase<float>; 68 69 // Overridden from ArrayBufferView. 70 virtual bool isFloatArray() const { return true; } 71 }; 72 73 } // namespace WebCore 74 75 #endif // Float32Array_h 76
