1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Google Inc.
*
* ipa_data_serializer.h - Image Processing Algorithm data serializer
*/
#pragma once
#include <deque>
#include <iostream>
#include <string.h>
#include <tuple>
#include <type_traits>
#include <vector>
#include <libcamera/base/flags.h>
#include <libcamera/base/log.h>
#include <libcamera/control_ids.h>
#include <libcamera/framebuffer.h>
#include <libcamera/geometry.h>
#include <libcamera/ipa/ipa_interface.h>
#include "libcamera/internal/byte_stream_buffer.h"
#include "libcamera/internal/camera_sensor.h"
#include "libcamera/internal/control_serializer.h"
namespace libcamera {
LOG_DECLARE_CATEGORY(IPADataSerializer)
namespace {
template<typename T,
std::enable_if_t<std::is_arithmetic_v<T>> * = nullptr>
void appendPOD(std::vector<uint8_t> &vec, T val)
{
constexpr size_t byteWidth = sizeof(val);
vec.resize(vec.size() + byteWidth);
memcpy(&*(vec.end() - byteWidth), &val, byteWidth);
}
template<typename T,
std::enable_if_t<std::is_arithmetic_v<T>> * = nullptr>
T readPOD(std::vector<uint8_t>::const_iterator it, size_t pos,
std::vector<uint8_t>::const_iterator end)
{
ASSERT(pos + it < end);
T ret = 0;
memcpy(&ret, &(*(it + pos)), sizeof(ret));
return ret;
}
template<typename T,
std::enable_if_t<std::is_arithmetic_v<T>> * = nullptr>
T readPOD(std::vector<uint8_t> &vec, size_t pos)
{
return readPOD<T>(vec.cbegin(), pos, vec.end());
}
} /* namespace */
template<typename T>
class IPADataSerializer
{
public:
static std::tuple<std::vector<uint8_t>, std::vector<SharedFD>>
serialize(const T &data, ControlSerializer *cs = nullptr);
static T deserialize(const std::vector<uint8_t> &data,
ControlSerializer *cs = nullptr);
static T deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
ControlSerializer *cs = nullptr);
static T deserialize(const std::vector<uint8_t> &data,
const std::vector<SharedFD> &fds,
ControlSerializer *cs = nullptr);
static T deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
std::vector<SharedFD>::const_iterator fdsBegin,
std::vector<SharedFD>::const_iterator fdsEnd,
ControlSerializer *cs = nullptr);
};
#ifndef __DOXYGEN__
/*
* Serialization format for vector of type V:
*
* 4 bytes - uint32_t Length of vector, in number of elements
*
* For every element in the vector:
*
* 4 bytes - uint32_t Size of element, in bytes
* 4 bytes - uint32_t Number of fds for the element
* X bytes - Serialized element
*
* \todo Support elements that are references
*/
template<typename V>
class IPADataSerializer<std::vector<V>>
{
public:
static std::tuple<std::vector<uint8_t>, std::vector<SharedFD>>
serialize(const std::vector<V> &data, ControlSerializer *cs = nullptr)
{
std::vector<uint8_t> dataVec;
std::vector<SharedFD> fdsVec;
/* Serialize the length. */
uint32_t vecLen = data.size();
appendPOD<uint32_t>(dataVec, vecLen);
/* Serialize the members. */
for (auto const &it : data) {
std::vector<uint8_t> dvec;
std::vector<SharedFD> fvec;
std::tie(dvec, fvec) =
IPADataSerializer<V>::serialize(it, cs);
appendPOD<uint32_t>(dataVec, dvec.size());
appendPOD<uint32_t>(dataVec, fvec.size());
dataVec.insert(dataVec.end(), dvec.begin(), dvec.end());
fdsVec.insert(fdsVec.end(), fvec.begin(), fvec.end());
}
return { dataVec, fdsVec };
}
static std::vector<V> deserialize(std::vector<uint8_t> &data, ControlSerializer *cs = nullptr)
{
return deserialize(data.cbegin(), data.cend(), cs);
}
static std::vector<V> deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
ControlSerializer *cs = nullptr)
{
std::vector<SharedFD> fds;
return deserialize(dataBegin, dataEnd, fds.cbegin(), fds.cend(), cs);
}
static std::vector<V> deserialize(std::vector<uint8_t> &data, std::vector<SharedFD> &fds,
ControlSerializer *cs = nullptr)
{
return deserialize(data.cbegin(), data.cend(), fds.cbegin(), fds.cend(), cs);
}
static std::vector<V> deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
std::vector<SharedFD>::const_iterator fdsBegin,
[[maybe_unused]] std::vector<SharedFD>::const_iterator fdsEnd,
ControlSerializer *cs = nullptr)
{
uint32_t vecLen = readPOD<uint32_t>(dataBegin, 0, dataEnd);
std::vector<V> ret(vecLen);
std::vector<uint8_t>::const_iterator dataIter = dataBegin + 4;
std::vector<SharedFD>::const_iterator fdIter = fdsBegin;
for (uint32_t i = 0; i < vecLen; i++) {
uint32_t sizeofData = readPOD<uint32_t>(dataIter, 0, dataEnd);
uint32_t sizeofFds = readPOD<uint32_t>(dataIter, 4, dataEnd);
dataIter += 8;
ret[i] = IPADataSerializer<V>::deserialize(dataIter,
dataIter + sizeofData,
fdIter,
fdIter + sizeofFds,
cs);
dataIter += sizeofData;
fdIter += sizeofFds;
}
return ret;
}
};
/*
* Serialization format for map of key type K and value type V:
*
* 4 bytes - uint32_t Length of map, in number of pairs
*
* For every pair in the map:
*
* 4 bytes - uint32_t Size of key, in bytes
* 4 bytes - uint32_t Number of fds for the key
* X bytes - Serialized key
* 4 bytes - uint32_t Size of value, in bytes
* 4 bytes - uint32_t Number of fds for the value
* X bytes - Serialized value
*
* \todo Support keys or values that are references
*/
template<typename K, typename V>
class IPADataSerializer<std::map<K, V>>
{
public:
static std::tuple<std::vector<uint8_t>, std::vector<SharedFD>>
serialize(const std::map<K, V> &data, ControlSerializer *cs = nullptr)
{
std::vector<uint8_t> dataVec;
std::vector<SharedFD> fdsVec;
/* Serialize the length. */
uint32_t mapLen = data.size();
appendPOD<uint32_t>(dataVec, mapLen);
/* Serialize the members. */
for (auto const &it : data) {
std::vector<uint8_t> dvec;
std::vector<SharedFD> fvec;
std::tie(dvec, fvec) =
IPADataSerializer<K>::serialize(it.first, cs);
appendPOD<uint32_t>(dataVec, dvec.size());
appendPOD<uint32_t>(dataVec, fvec.size());
dataVec.insert(dataVec.end(), dvec.begin(), dvec.end());
fdsVec.insert(fdsVec.end(), fvec.begin(), fvec.end());
std::tie(dvec, fvec) =
IPADataSerializer<V>::serialize(it.second, cs);
appendPOD<uint32_t>(dataVec, dvec.size());
appendPOD<uint32_t>(dataVec, fvec.size());
dataVec.insert(dataVec.end(), dvec.begin(), dvec.end());
fdsVec.insert(fdsVec.end(), fvec.begin(), fvec.end());
}
return { dataVec, fdsVec };
}
static std::map<K, V> deserialize(std::vector<uint8_t> &data, ControlSerializer *cs = nullptr)
{
return deserialize(data.cbegin(), data.cend(), cs);
}
static std::map<K, V> deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
ControlSerializer *cs = nullptr)
{
std::vector<SharedFD> fds;
return deserialize(dataBegin, dataEnd, fds.cbegin(), fds.cend(), cs);
}
static std::map<K, V> deserialize(std::vector<uint8_t> &data, std::vector<SharedFD> &fds,
ControlSerializer *cs = nullptr)
{
return deserialize(data.cbegin(), data.cend(), fds.cbegin(), fds.cend(), cs);
}
static std::map<K, V> deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
std::vector<SharedFD>::const_iterator fdsBegin,
[[maybe_unused]] std::vector<SharedFD>::const_iterator fdsEnd,
ControlSerializer *cs = nullptr)
{
std::map<K, V> ret;
uint32_t mapLen = readPOD<uint32_t>(dataBegin, 0, dataEnd);
std::vector<uint8_t>::const_iterator dataIter = dataBegin + 4;
std::vector<SharedFD>::const_iterator fdIter = fdsBegin;
for (uint32_t i = 0; i < mapLen; i++) {
uint32_t sizeofData = readPOD<uint32_t>(dataIter, 0, dataEnd);
uint32_t sizeofFds = readPOD<uint32_t>(dataIter, 4, dataEnd);
dataIter += 8;
K key = IPADataSerializer<K>::deserialize(dataIter,
dataIter + sizeofData,
fdIter,
fdIter + sizeofFds,
cs);
dataIter += sizeofData;
fdIter += sizeofFds;
sizeofData = readPOD<uint32_t>(dataIter, 0, dataEnd);
sizeofFds = readPOD<uint32_t>(dataIter, 4, dataEnd);
dataIter += 8;
const V value = IPADataSerializer<V>::deserialize(dataIter,
dataIter + sizeofData,
fdIter,
fdIter + sizeofFds,
cs);
ret.insert({ key, value });
dataIter += sizeofData;
fdIter += sizeofFds;
}
return ret;
}
};
/* Serialization format for Flags is same as for PODs */
template<typename E>
class IPADataSerializer<Flags<E>>
{
public:
static std::tuple<std::vector<uint8_t>, std::vector<SharedFD>>
serialize(const Flags<E> &data, [[maybe_unused]] ControlSerializer *cs = nullptr)
{
std::vector<uint8_t> dataVec;
dataVec.reserve(sizeof(Flags<E>));
appendPOD<uint32_t>(dataVec, static_cast<typename Flags<E>::Type>(data));
return { dataVec, {} };
}
static Flags<E> deserialize(std::vector<uint8_t> &data,
[[maybe_unused]] ControlSerializer *cs = nullptr)
{
return deserialize(data.cbegin(), data.cend());
}
static Flags<E> deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
[[maybe_unused]] ControlSerializer *cs = nullptr)
{
return Flags<E>{ static_cast<E>(readPOD<uint32_t>(dataBegin, 0, dataEnd)) };
}
static Flags<E> deserialize(std::vector<uint8_t> &data,
[[maybe_unused]] std::vector<SharedFD> &fds,
[[maybe_unused]] ControlSerializer *cs = nullptr)
{
return deserialize(data.cbegin(), data.cend());
}
static Flags<E> deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
[[maybe_unused]] std::vector<SharedFD>::const_iterator fdsBegin,
[[maybe_unused]] std::vector<SharedFD>::const_iterator fdsEnd,
[[maybe_unused]] ControlSerializer *cs = nullptr)
{
return deserialize(dataBegin, dataEnd);
}
};
#endif /* __DOXYGEN__ */
} /* namespace libcamera */
|
