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|---|---|---|---|
| 1 | // SPDX-FileCopyrightText: 2025 Arm Limited and/or its affiliates <open-source-office@arm.com> | ||
| 2 | // | ||
| 3 | // SPDX-License-Identifier: Apache-2.0 | ||
| 4 | |||
| 5 | #ifndef ABSDIFF_SC_H | ||
| 6 | #define ABSDIFF_SC_H | ||
| 7 | |||
| 8 | #include "kleidicv/sve2.h" | ||
| 9 | |||
| 10 | namespace KLEIDICV_TARGET_NAMESPACE { | ||
| 11 | |||
| 12 | template <typename ScalarType, typename VectorType, | ||
| 13 | std::enable_if_t<std::is_signed<ScalarType>::value, bool> = true> | ||
| 14 | 5878 | VectorType vector_path_impl(svbool_t pg, VectorType src_a, | |
| 15 | VectorType src_b) KLEIDICV_STREAMING { | ||
| 16 | // Results of SABD may be outside the signed range so use two | ||
| 17 | // saturating instructions instead. | ||
| 18 | 5878 | return svqabs_x(pg, svqsub_m(pg, src_a, src_b)); | |
| 19 | } | ||
| 20 | |||
| 21 | template <typename ScalarType, typename VectorType, | ||
| 22 | std::enable_if_t<std::is_unsigned<ScalarType>::value, bool> = true> | ||
| 23 | 2540 | VectorType vector_path_impl(svbool_t pg, VectorType src_a, | |
| 24 | VectorType src_b) KLEIDICV_STREAMING { | ||
| 25 | 2540 | return svabd_m(pg, src_a, src_b); | |
| 26 | } | ||
| 27 | |||
| 28 | template <typename ScalarType> | ||
| 29 | class SaturatingAbsDiff final : public UnrollTwice { | ||
| 30 | public: | ||
| 31 | using ContextType = Context; | ||
| 32 | using VecTraits = KLEIDICV_TARGET_NAMESPACE::VecTraits<ScalarType>; | ||
| 33 | using VectorType = typename VecTraits::VectorType; | ||
| 34 | |||
| 35 | 8418 | VectorType vector_path(ContextType ctx, VectorType src_a, | |
| 36 | VectorType src_b) KLEIDICV_STREAMING { | ||
| 37 | 8418 | return vector_path_impl<ScalarType>(ctx.predicate(), src_a, src_b); | |
| 38 | } | ||
| 39 | }; // end of class SaturatingAbsDiff<ScalarType> | ||
| 40 | |||
| 41 | template <typename T> | ||
| 42 | 1347 | kleidicv_error_t saturating_absdiff_sc(const T *src_a, size_t src_a_stride, | |
| 43 | const T *src_b, size_t src_b_stride, | ||
| 44 | T *dst, size_t dst_stride, size_t width, | ||
| 45 | size_t height) KLEIDICV_STREAMING { | ||
| 46 |
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1347 | CHECK_POINTER_AND_STRIDE(src_a, src_a_stride, height); |
| 47 |
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1323 | CHECK_POINTER_AND_STRIDE(src_b, src_b_stride, height); |
| 48 |
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1299 | CHECK_POINTER_AND_STRIDE(dst, dst_stride, height); |
| 49 |
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1275 | CHECK_IMAGE_SIZE(width, height); |
| 50 | |||
| 51 | 1245 | SaturatingAbsDiff<T> operation; | |
| 52 | 1245 | Rectangle rect{width, height}; | |
| 53 | 1245 | Rows<const T> src_a_rows{src_a, src_a_stride}; | |
| 54 | 1245 | Rows<const T> src_b_rows{src_b, src_b_stride}; | |
| 55 | 1245 | Rows<T> dst_rows{dst, dst_stride}; | |
| 56 | 1245 | apply_operation_by_rows(operation, rect, src_a_rows, src_b_rows, dst_rows); | |
| 57 | 1245 | return KLEIDICV_OK; | |
| 58 | 1347 | } | |
| 59 | |||
| 60 | } // namespace KLEIDICV_TARGET_NAMESPACE | ||
| 61 | |||
| 62 | #endif // ABSDIFF_SC_H | ||
| 63 |