KleidiCV Coverage Report

Directory: ./
File: kleidicv/src/conversions/rgb_to_rgb_sc.h
Date: 2025-09-25 14:13:34
Exec Total Coverage
Lines: 108 108 100.0%
Functions: 24 24 100.0%
Branches: 84 84 100.0%
Line Branch Exec Source
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_RGB_TO_RGB_SC_H
6 #define KLEIDICV_RGB_TO_RGB_SC_H
7
8 #include "kleidicv/conversions/rgb_to_rgb.h"
9 #include "kleidicv/kleidicv.h"
10 #include "kleidicv/sve2.h"
11
12 namespace KLEIDICV_TARGET_NAMESPACE {
13
14 template <typename ScalarType>
15 class RGBToBGR final :
16 #if !KLEIDICV_PREFER_INTERLEAVING_LOAD_STORE && KLEIDICV_ASSUME_128BIT_SVE2
17 public UsesTailPath,
18 #endif
19 public UnrollTwice {
20 public:
21 using ContextType = Context;
22 using VecTraits = KLEIDICV_TARGET_NAMESPACE::VecTraits<ScalarType>;
23 using VectorType = typename VecTraits::VectorType;
24
25 #if KLEIDICV_PREFER_INTERLEAVING_LOAD_STORE || !KLEIDICV_ASSUME_128BIT_SVE2
26 639 void vector_path(ContextType ctx, const ScalarType *src,
27 ScalarType *dst) KLEIDICV_STREAMING {
28 639 auto pg = ctx.predicate();
29 639 svuint8x3_t src_vect = svld3(pg, src);
30 1278 svuint8x3_t dst_vect = svcreate3(svget3(src_vect, 2), svget3(src_vect, 1),
31 639 svget3(src_vect, 0));
32
33 639 svst3(pg, dst, dst_vect);
34 639 }
35 #else // KLEIDICV_PREFER_INTERLEAVING_LOAD_STORE ||
36 // !KLEIDICV_ASSUME_128BIT_SVE2
37 explicit RGBToBGR(svuint8x4_t &indices) KLEIDICV_STREAMING
38 : indices_{indices} {
39 initialize_indices();
40 }
41
42 void vector_path(ContextType ctx, const ScalarType *src,
43 ScalarType *dst) KLEIDICV_STREAMING {
44 // Call the common vector path.
45 auto pg = ctx.predicate();
46 common_vector_path(pg, pg, pg, src, dst);
47 }
48
49 void tail_path(ContextType ctx, const ScalarType *src,
50 ScalarType *dst) KLEIDICV_STREAMING {
51 auto pg = ctx.predicate();
52 // Predicates for consecutive stores.
53 svbool_t pg_0, pg_1, pg_2;
54 VecTraits::make_consecutive_predicates(pg, pg_0, pg_1, pg_2);
55 // Call the common vector path.
56 common_vector_path(pg_0, pg_1, pg_2, src, dst);
57 }
58
59 private:
60 void common_vector_path(svbool_t pg_0, svbool_t pg_1, svbool_t pg_2,
61 const ScalarType *src,
62 ScalarType *dst) KLEIDICV_STREAMING {
63 VectorType src_0 = svld1(pg_0, &src[0]);
64 VectorType src_1 = svld1_vnum(pg_1, &src[0], 1);
65 VectorType src_2 = svld1_vnum(pg_2, &src[0], 2);
66
67 svuint8x2_t src_vect_0_1 = svcreate2(src_0, src_1);
68 svuint8x2_t src_vect_1_2 = svcreate2(src_1, src_2);
69
70 svuint8_t dst_vec_0 = svtbl2(src_vect_0_1, svget4(indices_, 0));
71 svuint8_t dst_vec_2 = svtbl2(src_vect_1_2, svget4(indices_, 3));
72 svuint8_t dst_vec_1 = svtbl2(src_vect_0_1, svget4(indices_, 1));
73 src_vect_1_2 = svcreate2(dst_vec_1, src_2);
74 dst_vec_1 = svtbl2(src_vect_1_2, svget4(indices_, 2));
75
76 svst1(pg_0, &dst[0], dst_vec_0);
77 svst1_vnum(pg_1, &dst[0], 1, dst_vec_1);
78 svst1_vnum(pg_2, &dst[0], 2, dst_vec_2);
79 }
80
81 void initialize_indices() KLEIDICV_STREAMING {
82 svbool_t pg = VecTraits::svptrue();
83 indices_ = svcreate4(svld1(pg, &kTableIndices[0]),
84 svld1_vnum(pg, &kTableIndices[0], 1),
85 svld1_vnum(pg, &kTableIndices[0], 2),
86 svld1_vnum(pg, &kTableIndices[0], 3));
87 }
88
89 static constexpr uint8_t kTableIndices[64] = {
90 2, 1, 0, 5, 4, 3, 8, 7, 6, 11, 10, 9, 14, 13, 12, 17,
91 16, 15, 20, 19, 18, 23, 22, 21, 26, 25, 24, 29, 28, 27, 32, 31,
92 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, 15,
93 14, 19, 18, 17, 22, 21, 20, 25, 24, 23, 28, 27, 26, 31, 30, 29};
94
95 // Hold a reference because a sizeless types cannot be members.
96 svuint8x4_t &indices_;
97 #endif // !KLEIDICV_PREFER_INTERLEAVING_LOAD_STORE ||
98 // !KLEIDICV_ASSUME_128BIT_SVE2
99 }; // end of class RGBToBGR<ScalarType>
100
101 template <typename ScalarType>
102 class RGBAToBGRA final : public UnrollTwice {
103 public:
104 using ContextType = Context;
105 using VecTraits = KLEIDICV_TARGET_NAMESPACE::VecTraits<ScalarType>;
106
107 639 void vector_path(ContextType ctx, const ScalarType *src,
108 ScalarType *dst) KLEIDICV_STREAMING {
109 639 auto pg = ctx.predicate();
110 639 svuint8x4_t src_vect = svld4(pg, src);
111 1278 svuint8x4_t dst_vect = svcreate4(svget4(src_vect, 2), svget4(src_vect, 1),
112 639 svget4(src_vect, 0), svget4(src_vect, 3));
113
114 639 svst4(pg, dst, dst_vect);
115 639 }
116 }; // end of class RGBAToBGRA<ScalarType>
117
118 template <typename ScalarType>
119 class RGBToBGRA final : public UnrollTwice {
120 public:
121 using ContextType = Context;
122 using VecTraits = KLEIDICV_TARGET_NAMESPACE::VecTraits<ScalarType>;
123
124 639 void vector_path(ContextType ctx, const ScalarType *src,
125 ScalarType *dst) KLEIDICV_STREAMING {
126 639 auto pg = ctx.predicate();
127 639 svuint8x3_t src_vect = svld3(pg, src);
128 1278 svuint8x4_t dst_vect = svcreate4(svget3(src_vect, 2), svget3(src_vect, 1),
129 639 svget3(src_vect, 0), svdup_u8(0xff));
130
131 639 svst4(pg, dst, dst_vect);
132 639 }
133 }; // end of class RGBToBGRA<ScalarType>
134
135 template <typename ScalarType>
136 class RGBToRGBA final : public UnrollTwice {
137 public:
138 using ContextType = Context;
139 using VecTraits = KLEIDICV_TARGET_NAMESPACE::VecTraits<ScalarType>;
140
141 639 void vector_path(ContextType ctx, const ScalarType *src,
142 ScalarType *dst) KLEIDICV_STREAMING {
143 639 auto pg = ctx.predicate();
144 639 svuint8x3_t src_vect = svld3(pg, src);
145 1278 svuint8x4_t dst_vect = svcreate4(svget3(src_vect, 0), svget3(src_vect, 1),
146 639 svget3(src_vect, 2), svdup_u8(0xff));
147
148 639 svst4(pg, dst, dst_vect);
149 639 }
150 }; // end of class RGBToRGBA<ScalarType>
151
152 template <typename ScalarType>
153 class RGBAToBGR final : public UnrollTwice {
154 public:
155 using ContextType = Context;
156 using VecTraits = KLEIDICV_TARGET_NAMESPACE::VecTraits<ScalarType>;
157
158 639 void vector_path(ContextType ctx, const ScalarType *src,
159 ScalarType *dst) KLEIDICV_STREAMING {
160 639 auto pg = ctx.predicate();
161 639 svuint8x4_t src_vect = svld4(pg, src);
162 1278 svuint8x3_t dst_vect = svcreate3(svget4(src_vect, 2), svget4(src_vect, 1),
163 639 svget4(src_vect, 0));
164
165 639 svst3(pg, dst, dst_vect);
166 639 }
167 }; // end of class RGBAToBGR<ScalarType>
168
169 template <typename ScalarType>
170 class RGBAToRGB final : public UnrollTwice {
171 public:
172 using ContextType = Context;
173 using VecTraits = KLEIDICV_TARGET_NAMESPACE::VecTraits<ScalarType>;
174
175 639 void vector_path(ContextType ctx, const ScalarType *src,
176 ScalarType *dst) KLEIDICV_STREAMING {
177 639 auto pg = ctx.predicate();
178 639 svuint8x4_t src_vect = svld4(pg, src);
179 1278 svuint8x3_t dst_vect = svcreate3(svget4(src_vect, 0), svget4(src_vect, 1),
180 639 svget4(src_vect, 2));
181
182 639 svst3(pg, dst, dst_vect);
183 639 }
184 }; // end of class RGBAToRGB<ScalarType>
185
186 143 KLEIDICV_TARGET_FN_ATTRS static kleidicv_error_t rgb_to_bgr_u8_sc(
187 const uint8_t *src, size_t src_stride, uint8_t *dst, size_t dst_stride,
188 size_t width, size_t height) KLEIDICV_STREAMING {
189
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 143 CHECK_POINTER_AND_STRIDE(src, src_stride, height);
190
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 140 CHECK_POINTER_AND_STRIDE(dst, dst_stride, height);
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 137 CHECK_IMAGE_SIZE(width, height);
192
193 131 Rectangle rect{width, height};
194 131 Rows<const uint8_t> src_rows{src, src_stride, 3 /* RGB */};
195 131 Rows<uint8_t> dst_rows{dst, dst_stride, 3 /* BGR */};
196 #if KLEIDICV_PREFER_INTERLEAVING_LOAD_STORE || !KLEIDICV_ASSUME_128BIT_SVE2
197 131 RGBToBGR<uint8_t> operation;
198 #else
199 svuint8x4_t table_indices;
200 RGBToBGR<uint8_t> operation{table_indices};
201 #endif
202 131 apply_operation_by_rows(operation, rect, src_rows, dst_rows);
203 131 return KLEIDICV_OK;
204 143 }
205
206 KLEIDICV_TARGET_FN_ATTRS
207 143 static kleidicv_error_t rgba_to_bgra_u8_sc(const uint8_t *src,
208 size_t src_stride, uint8_t *dst,
209 size_t dst_stride, size_t width,
210 size_t height) KLEIDICV_STREAMING {
211
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 143 CHECK_POINTER_AND_STRIDE(src, src_stride, height);
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 140 CHECK_POINTER_AND_STRIDE(dst, dst_stride, height);
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 137 CHECK_IMAGE_SIZE(width, height);
214
215 131 Rectangle rect{width, height};
216 131 Rows<const uint8_t> src_rows{src, src_stride, 4 /* RGBA */};
217 131 Rows<uint8_t> dst_rows{dst, dst_stride, 4 /* BGRA */};
218 131 RGBAToBGRA<uint8_t> operation;
219 131 apply_operation_by_rows(operation, rect, src_rows, dst_rows);
220 131 return KLEIDICV_OK;
221 143 }
222
223 KLEIDICV_TARGET_FN_ATTRS
224 143 static kleidicv_error_t rgb_to_bgra_u8_sc(const uint8_t *src, size_t src_stride,
225 uint8_t *dst, size_t dst_stride,
226 size_t width,
227 size_t height) KLEIDICV_STREAMING {
228
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 143 CHECK_POINTER_AND_STRIDE(src, src_stride, height);
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 140 CHECK_POINTER_AND_STRIDE(dst, dst_stride, height);
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 137 CHECK_IMAGE_SIZE(width, height);
231
232 131 Rectangle rect{width, height};
233 131 Rows<const uint8_t> src_rows{src, src_stride, 3 /* RGB */};
234 131 Rows<uint8_t> dst_rows{dst, dst_stride, 4 /* BGRA */};
235 131 RGBToBGRA<uint8_t> operation;
236 131 apply_operation_by_rows(operation, rect, src_rows, dst_rows);
237 131 return KLEIDICV_OK;
238 143 }
239
240 KLEIDICV_TARGET_FN_ATTRS
241 143 static kleidicv_error_t rgb_to_rgba_u8_sc(const uint8_t *src, size_t src_stride,
242 uint8_t *dst, size_t dst_stride,
243 size_t width,
244 size_t height) KLEIDICV_STREAMING {
245
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 143 CHECK_POINTER_AND_STRIDE(src, src_stride, height);
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 140 CHECK_POINTER_AND_STRIDE(dst, dst_stride, height);
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 137 CHECK_IMAGE_SIZE(width, height);
248
249 131 Rectangle rect{width, height};
250 131 Rows<const uint8_t> src_rows{src, src_stride, 3 /* RGB */};
251 131 Rows<uint8_t> dst_rows{dst, dst_stride, 4 /* RGBA */};
252 131 RGBToRGBA<uint8_t> operation;
253 131 apply_operation_by_rows(operation, rect, src_rows, dst_rows);
254 131 return KLEIDICV_OK;
255 143 }
256
257 KLEIDICV_TARGET_FN_ATTRS
258 143 static kleidicv_error_t rgba_to_bgr_u8_sc(const uint8_t *src, size_t src_stride,
259 uint8_t *dst, size_t dst_stride,
260 size_t width,
261 size_t height) KLEIDICV_STREAMING {
262
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 143 CHECK_POINTER_AND_STRIDE(src, src_stride, height);
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 140 CHECK_POINTER_AND_STRIDE(dst, dst_stride, height);
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 137 CHECK_IMAGE_SIZE(width, height);
265
266 131 Rectangle rect{width, height};
267 131 Rows<const uint8_t> src_rows{src, src_stride, 4 /* RGBA */};
268 131 Rows<uint8_t> dst_rows{dst, dst_stride, 3 /* BGR */};
269 131 RGBAToBGR<uint8_t> operation;
270 131 apply_operation_by_rows(operation, rect, src_rows, dst_rows);
271 131 return KLEIDICV_OK;
272 143 }
273
274 KLEIDICV_TARGET_FN_ATTRS
275 143 static kleidicv_error_t rgba_to_rgb_u8_sc(const uint8_t *src, size_t src_stride,
276 uint8_t *dst, size_t dst_stride,
277 size_t width,
278 size_t height) KLEIDICV_STREAMING {
279
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 143 CHECK_POINTER_AND_STRIDE(src, src_stride, height);
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 140 CHECK_POINTER_AND_STRIDE(dst, dst_stride, height);
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 137 CHECK_IMAGE_SIZE(width, height);
282
283 131 Rectangle rect{width, height};
284 131 Rows<const uint8_t> src_rows{src, src_stride, 4 /* RGBA */};
285 131 Rows<uint8_t> dst_rows{dst, dst_stride, 3 /* RGB */};
286 131 RGBAToRGB<uint8_t> operation;
287 131 apply_operation_by_rows(operation, rect, src_rows, dst_rows);
288 131 return KLEIDICV_OK;
289 143 }
290
291 } // namespace KLEIDICV_TARGET_NAMESPACE
292
293 #endif // KLEIDICV_RGB_TO_RGB_SC_H
294