1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/*
* Copyright (C) 2010, Google Inc. All rights reserved.
* Copyright (C) 2020, Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
// Defines the interface for several vector math functions whose implementation will ideally be optimized.
namespace WebCore {
namespace VectorMath {
// Multiples inputVector by scalar then adds the result to outputVector (simplified vsma).
// for (n = 0; n < numberOfElementsToProcess; ++n)
// outputVector[n] += inputVector[n] * scalar;
void multiplyByScalarThenAddToOutput(const float* inputVector, float scalar, float* outputVector, size_t numberOfElementsToProcess);
// Adds a vector inputVector2 to the product of a scalar value and a single-precision vector inputVector1 (vsma).
// for (n = 0; n < numberOfElementsToProcess; ++n)
// outputVector[n] = inputVector1[n] * scalar + inputVector2[n];
void multiplyByScalarThenAddToVector(const float* inputVector1, float scalar, const float* inputVector2, float* outputVector, size_t numberOfElementsToProcess);
// Multiplies the sum of two vectors by a scalar value (vasm).
void addVectorsThenMultiplyByScalar(const float* inputVector1, const float* inputVector2, float scalar, float* outputVector, size_t numberOfElementsToProcess);
void multiplyByScalar(const float* inputVector, float scalar, float* outputVector, size_t numberOfElementsToProcess);
void addScalar(const float* inputVector, float scalar, float* outputVector, size_t numberOfElementsToProcess);
void add(const float* inputVector1, const float* inputVector2, float* outputVector, size_t numberOfElementsToProcess);
void substract(const float* inputVector1, const float* inputVector2, float* outputVector, size_t numberOfElementsToProcess);
// Finds the maximum magnitude of a float vector.
float maximumMagnitude(const float* inputVector, size_t numberOfElementsToProcess);
// Sums the squares of a float vector's elements (svesq).
float sumOfSquares(const float* inputVector, size_t numberOfElementsToProcess);
// For an element-by-element multiply of two float vectors.
void multiply(const float* inputVector1, const float* inputVector2, float* outputVector, size_t numberOfElementsToProcess);
// Multiplies two complex vectors (zvmul).
void multiplyComplex(const float* realVector1, const float* imagVector1, const float* realVector2, const float* imagVector2, float* realOutputVector, float* imagOutputVector, size_t numberOfElementsToProcess);
// Copies elements while clipping values to the threshold inputs.
void clamp(const float* inputVector, float mininum, float maximum, float* outputVector, size_t numberOfElementsToProcess);
void linearToDecibels(const float* inputVector, float* outputVector, size_t numberOfElementsToProcess);
// Calculates the linear interpolation between the supplied single-precision vectors
// for (n = 0; n < numberOfElementsToProcess; ++n)
// outputVector[n] = inputVector1[n] + interpolationFactor * (inputVector2[n] - inputVector1[n]);
// NOTE: Internal implementation may modify inputVector2.
void interpolate(const float* inputVector1, float* inputVector2, float interpolationFactor, float* outputVector, size_t numberOfElementsToProcess);
} // namespace VectorMath
} // namespace WebCore
|
