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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 | #include "kleidicv/kleidicv.h" | ||
| 6 | #include "kleidicv/sve2.h" | ||
| 7 | |||
| 8 | namespace kleidicv::sme { | ||
| 9 | |||
| 10 | template <typename ScalarType, typename VectorType, | ||
| 11 | std::enable_if_t<std::is_signed<ScalarType>::value, bool> = true> | ||
| 12 | 1146 | VectorType vector_path_impl(svbool_t pg, VectorType src_a, | |
| 13 | VectorType src_b) KLEIDICV_STREAMING { | ||
| 14 | // Results of SABD may be outside the signed range so use two | ||
| 15 | // saturating instructions instead. | ||
| 16 | 1146 | return svqabs_x(pg, svqsub_m(pg, src_a, src_b)); | |
| 17 | } | ||
| 18 | |||
| 19 | template <typename ScalarType, typename VectorType, | ||
| 20 | std::enable_if_t<std::is_unsigned<ScalarType>::value, bool> = true> | ||
| 21 | 489 | VectorType vector_path_impl(svbool_t pg, VectorType src_a, | |
| 22 | VectorType src_b) KLEIDICV_STREAMING { | ||
| 23 | 489 | return svabd_m(pg, src_a, src_b); | |
| 24 | } | ||
| 25 | |||
| 26 | template <typename ScalarType> | ||
| 27 | class SaturatingAbsDiff final : public UnrollTwice { | ||
| 28 | public: | ||
| 29 | using ContextType = Context; | ||
| 30 | using VecTraits = KLEIDICV_TARGET_NAMESPACE::VecTraits<ScalarType>; | ||
| 31 | using VectorType = typename VecTraits::VectorType; | ||
| 32 | |||
| 33 | 1635 | VectorType vector_path(ContextType ctx, VectorType src_a, | |
| 34 | VectorType src_b) KLEIDICV_STREAMING { | ||
| 35 | 1635 | return vector_path_impl<ScalarType>(ctx.predicate(), src_a, src_b); | |
| 36 | } | ||
| 37 | }; // end of class SaturatingAbsDiff<ScalarType> | ||
| 38 | |||
| 39 | template <typename T> | ||
| 40 | 359 | KLEIDICV_LOCALLY_STREAMING kleidicv_error_t saturating_absdiff( | |
| 41 | const T *src_a, size_t src_a_stride, const T *src_b, size_t src_b_stride, | ||
| 42 | T *dst, size_t dst_stride, size_t width, size_t height) { | ||
| 43 |
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359 | CHECK_POINTER_AND_STRIDE(src_a, src_a_stride, height); |
| 44 |
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351 | CHECK_POINTER_AND_STRIDE(src_b, src_b_stride, height); |
| 45 |
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343 | CHECK_POINTER_AND_STRIDE(dst, dst_stride, height); |
| 46 |
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335 | CHECK_IMAGE_SIZE(width, height); |
| 47 | |||
| 48 | 325 | SaturatingAbsDiff<T> operation; | |
| 49 | 325 | Rectangle rect{width, height}; | |
| 50 | 325 | Rows<const T> src_a_rows{src_a, src_a_stride}; | |
| 51 | 325 | Rows<const T> src_b_rows{src_b, src_b_stride}; | |
| 52 | 325 | Rows<T> dst_rows{dst, dst_stride}; | |
| 53 | 325 | apply_operation_by_rows(operation, rect, src_a_rows, src_b_rows, dst_rows); | |
| 54 | 325 | return KLEIDICV_OK; | |
| 55 | 359 | } | |
| 56 | |||
| 57 | #define KLEIDICV_INSTANTIATE_TEMPLATE(type) \ | ||
| 58 | template KLEIDICV_TARGET_FN_ATTRS kleidicv_error_t saturating_absdiff<type>( \ | ||
| 59 | const type *src_a, size_t src_a_stride, const type *src_b, \ | ||
| 60 | size_t src_b_stride, type *dst, size_t dst_stride, size_t width, \ | ||
| 61 | size_t height) | ||
| 62 | |||
| 63 | KLEIDICV_INSTANTIATE_TEMPLATE(uint8_t); | ||
| 64 | KLEIDICV_INSTANTIATE_TEMPLATE(int8_t); | ||
| 65 | KLEIDICV_INSTANTIATE_TEMPLATE(uint16_t); | ||
| 66 | KLEIDICV_INSTANTIATE_TEMPLATE(int16_t); | ||
| 67 | KLEIDICV_INSTANTIATE_TEMPLATE(int32_t); | ||
| 68 | |||
| 69 | } // namespace kleidicv::sme | ||
| 70 |