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|---|---|---|---|
| 1 | // SPDX-FileCopyrightText: 2023 - 2024 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::sve2 { | ||
| 9 | |||
| 10 | template <typename ScalarType> | ||
| 11 | class SaturatingMultiply final : public UnrollTwice { | ||
| 12 | public: | ||
| 13 | using ContextType = Context; | ||
| 14 | using VecTraits = KLEIDICV_TARGET_NAMESPACE::VecTraits<ScalarType>; | ||
| 15 | using VectorType = typename VecTraits::VectorType; | ||
| 16 | |||
| 17 | 650 | explicit SaturatingMultiply(double scale = 1.0) : scale_{scale} {}; | |
| 18 | |||
| 19 | 10858 | VectorType vector_path(ContextType ctx, VectorType src_a, VectorType src_b) { | |
| 20 | 10858 | VectorType result; | |
| 21 | (void)ctx; | ||
| 22 | |||
| 23 | // multiply-widen even-indexed elements | ||
| 24 | 10858 | auto bottom_part = svmullb(src_a, src_b); | |
| 25 | // multiply-widen odd-indexed elements | ||
| 26 | 10858 | auto top_part = svmullt(src_a, src_b); | |
| 27 | // saturating-narrow even-indexed | ||
| 28 | 10858 | auto narrow_bottom = svqxtnb(bottom_part); | |
| 29 | // saturaning-narrow odd-indexed and merge with even-indexed | ||
| 30 | 10858 | result = svqxtnt(narrow_bottom, top_part); | |
| 31 | |||
| 32 | /* TODO: figure out the way to multiply by double or some | ||
| 33 | fixed supported scale. | ||
| 34 | */ | ||
| 35 | |||
| 36 | 21716 | return result; | |
| 37 | 10858 | } | |
| 38 | |||
| 39 | private: | ||
| 40 | double scale_; | ||
| 41 | }; | ||
| 42 | |||
| 43 | template <typename T> | ||
| 44 | 718 | kleidicv_error_t saturating_multiply(const T *src_a, size_t src_a_stride, | |
| 45 | const T *src_b, size_t src_b_stride, | ||
| 46 | T *dst, size_t dst_stride, size_t width, | ||
| 47 | size_t height, double scale) { | ||
| 48 |
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718 | CHECK_POINTER_AND_STRIDE(src_a, src_a_stride, height); |
| 49 |
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702 | CHECK_POINTER_AND_STRIDE(src_b, src_b_stride, height); |
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686 | CHECK_POINTER_AND_STRIDE(dst, dst_stride, height); |
| 51 |
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670 | CHECK_IMAGE_SIZE(width, height); |
| 52 | |||
| 53 | (void)scale; // TODO: figure out the way to process the scale. | ||
| 54 | 650 | SaturatingMultiply<T> operation; | |
| 55 | 650 | Rectangle rect{width, height}; | |
| 56 | 650 | Rows<const T> src_a_rows{src_a, src_a_stride}; | |
| 57 | 650 | Rows<const T> src_b_rows{src_b, src_b_stride}; | |
| 58 | 650 | Rows<T> dst_rows{dst, dst_stride}; | |
| 59 | 650 | apply_operation_by_rows(operation, rect, src_a_rows, src_b_rows, dst_rows); | |
| 60 | 650 | return KLEIDICV_OK; | |
| 61 | 718 | } | |
| 62 | |||
| 63 | #define KLEIDICV_INSTANTIATE_TEMPLATE(type) \ | ||
| 64 | template KLEIDICV_TARGET_FN_ATTRS kleidicv_error_t \ | ||
| 65 | saturating_multiply<type>(const type *src_a, size_t src_a_stride, \ | ||
| 66 | const type *src_b, size_t src_b_stride, type *dst, \ | ||
| 67 | size_t dst_stride, size_t width, size_t height, \ | ||
| 68 | double scale) | ||
| 69 | |||
| 70 | KLEIDICV_INSTANTIATE_TEMPLATE(uint8_t); | ||
| 71 | KLEIDICV_INSTANTIATE_TEMPLATE(int8_t); | ||
| 72 | KLEIDICV_INSTANTIATE_TEMPLATE(uint16_t); | ||
| 73 | KLEIDICV_INSTANTIATE_TEMPLATE(int16_t); | ||
| 74 | KLEIDICV_INSTANTIATE_TEMPLATE(int32_t); | ||
| 75 | |||
| 76 | } // namespace kleidicv::sve2 | ||
| 77 |