KleidiCV Coverage Report

Directory: ./
File: kleidicv/src/analysis/min_max_sc.h
Date: 2025-11-25 17:23:32
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1 // SPDX-FileCopyrightText: 2023 - 2025 Arm Limited and/or its affiliates <open-source-office@arm.com>
2 //
3 // SPDX-License-Identifier: Apache-2.0
4
5 #ifndef KLEIDICV_MIN_MAX_SC_H
6 #define KLEIDICV_MIN_MAX_SC_H
7
8 #include <limits>
9
10 #include "kleidicv/sve2.h"
11
12 namespace KLEIDICV_TARGET_NAMESPACE {
13
14 template <typename ScalarType>
15 class MinMax final : public UnrollTwice {
16 public:
17 using VecTraits = KLEIDICV_TARGET_NAMESPACE::VecTraits<ScalarType>;
18 using VectorType = typename VecTraits::VectorType;
19 using ContextType = Context;
20
21 2670 MinMax(VectorType &vmin, VectorType &vmax) KLEIDICV_STREAMING : vmin_{vmin},
22 2670 vmax_{vmax} {}
23
24 14668 void vector_path(ContextType ctx, VectorType src) KLEIDICV_STREAMING {
25 14668 auto pg = ctx.predicate();
26 14668 vmin_ = svmin_m(pg, vmin_, src);
27 14668 vmax_ = svmax_m(pg, vmax_, src);
28 14668 }
29
30 1554 ScalarType get_min() const KLEIDICV_STREAMING {
31 1554 auto pg = VecTraits::svptrue();
32 3108 return svminv(pg, vmin_);
33 1554 }
34
35 1554 ScalarType get_max() const KLEIDICV_STREAMING {
36 1554 auto pg = VecTraits::svptrue();
37 3108 return svmaxv(pg, vmax_);
38 1554 }
39
40 private:
41 VectorType &vmin_, &vmax_;
42 }; // end of class MinMax<T>
43
44 template <typename ScalarType>
45 3294 kleidicv_error_t min_max_sc(const ScalarType *src, size_t src_stride,
46 size_t width, size_t height, ScalarType *min_value,
47 ScalarType *max_value) KLEIDICV_STREAMING {
48
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 3294 CHECK_POINTER_AND_STRIDE(src, src_stride, height);
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 2742 CHECK_IMAGE_SIZE(width, height);
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 2706 if (KLEIDICV_UNLIKELY(width == 0 || height == 0)) {
52 36 return KLEIDICV_ERROR_RANGE;
53 }
54
55 2670 Rectangle rect{width, height};
56 2670 Rows<const ScalarType> src_rows{src, src_stride};
57
58 using VecTraits = KLEIDICV_TARGET_NAMESPACE::VecTraits<ScalarType>;
59 using VectorType = typename VecTraits::VectorType;
60 2670 VectorType vmin = VecTraits::svdup(std::numeric_limits<ScalarType>::max());
61 2670 VectorType vmax = VecTraits::svdup(std::numeric_limits<ScalarType>::lowest());
62
63 2670 MinMax<ScalarType> operation{vmin, vmax};
64
65 2670 apply_operation_by_rows(operation, rect, src_rows);
66
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 2670 if (min_value) {
67 1554 *min_value = operation.get_min();
68 1554 }
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 2670 if (max_value) {
70 1554 *max_value = operation.get_max();
71 1554 }
72 2670 return KLEIDICV_OK;
73 3294 }
74
75 } // namespace KLEIDICV_TARGET_NAMESPACE
76
77 #endif // KLEIDICV_MIN_MAX_SC_H
78