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
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* camera_metadata.cpp - libcamera Android Camera Metadata Helper
*/
#include "camera_metadata.h"
#include <libcamera/base/log.h>
using namespace libcamera;
LOG_DEFINE_CATEGORY(CameraMetadata)
CameraMetadata::CameraMetadata()
: metadata_(nullptr), valid_(false), resized_(false)
{
}
CameraMetadata::CameraMetadata(size_t entryCapacity, size_t dataCapacity)
: resized_(false)
{
metadata_ = allocate_camera_metadata(entryCapacity, dataCapacity);
valid_ = metadata_ != nullptr;
}
CameraMetadata::CameraMetadata(const camera_metadata_t *metadata)
: resized_(false)
{
metadata_ = clone_camera_metadata(metadata);
valid_ = metadata_ != nullptr;
}
CameraMetadata::CameraMetadata(const CameraMetadata &other)
: CameraMetadata(other.getMetadata())
{
}
CameraMetadata::~CameraMetadata()
{
if (metadata_)
free_camera_metadata(metadata_);
}
CameraMetadata &CameraMetadata::operator=(const CameraMetadata &other)
{
if (this == &other)
return *this;
if (metadata_)
free_camera_metadata(metadata_);
metadata_ = clone_camera_metadata(other.getMetadata());
valid_ = metadata_ != nullptr;
return *this;
}
std::tuple<size_t, size_t> CameraMetadata::usage() const
{
size_t currentEntryCount = get_camera_metadata_entry_count(metadata_);
size_t currentDataCount = get_camera_metadata_data_count(metadata_);
return { currentEntryCount, currentDataCount };
}
bool CameraMetadata::getEntry(uint32_t tag, camera_metadata_ro_entry_t *entry) const
{
if (find_camera_metadata_ro_entry(metadata_, tag, entry))
return false;
return true;
}
/*
* \brief Resize the metadata container, if necessary
* \param[in] count Number of entries to add to the container
* \param[in] size Total size of entries to add, in bytes
* \return True if resize was successful or unnecessary, false otherwise
*/
bool CameraMetadata::resize(size_t count, size_t size)
{
if (!valid_)
return false;
if (!count && !size)
return true;
size_t currentEntryCount = get_camera_metadata_entry_count(metadata_);
size_t currentEntryCapacity = get_camera_metadata_entry_capacity(metadata_);
size_t newEntryCapacity = currentEntryCapacity < currentEntryCount + count ?
currentEntryCapacity * 2 : currentEntryCapacity;
size_t currentDataCount = get_camera_metadata_data_count(metadata_);
size_t currentDataCapacity = get_camera_metadata_data_capacity(metadata_);
size_t newDataCapacity = currentDataCapacity < currentDataCount + size ?
currentDataCapacity * 2 : currentDataCapacity;
if (newEntryCapacity > currentEntryCapacity ||
newDataCapacity > currentDataCapacity) {
camera_metadata_t *oldMetadata = metadata_;
metadata_ = allocate_camera_metadata(newEntryCapacity, newDataCapacity);
if (!metadata_) {
metadata_ = oldMetadata;
return false;
}
LOG(CameraMetadata, Info)
<< "Resized: old entry capacity " << currentEntryCapacity
<< ", old data capacity " << currentDataCapacity
<< ", new entry capacity " << newEntryCapacity
<< ", new data capacity " << newDataCapacity;
append_camera_metadata(metadata_, oldMetadata);
free_camera_metadata(oldMetadata);
resized_ = true;
}
return true;
}
template<> bool CameraMetadata::entryContains(uint32_t tag, uint8_t value) const
{
camera_metadata_ro_entry_t entry;
if (!getEntry(tag, &entry))
return false;
for (unsigned int i = 0; i < entry.count; i++) {
if (entry.data.u8[i] == value)
return true;
}
return false;
}
bool CameraMetadata::hasEntry(uint32_t tag) const
{
camera_metadata_ro_entry_t entry;
return getEntry(tag, &entry);
}
bool CameraMetadata::addEntry(uint32_t tag, const void *data, size_t count,
size_t elementSize)
{
if (!valid_)
return false;
if (!resize(1, count * elementSize)) {
LOG(CameraMetadata, Error) << "Failed to resize";
valid_ = false;
return false;
}
if (!add_camera_metadata_entry(metadata_, tag, data, count))
return true;
const char *name = get_camera_metadata_tag_name(tag);
if (name)
LOG(CameraMetadata, Error)
<< "Failed to add tag " << name;
else
LOG(CameraMetadata, Error)
<< "Failed to add unknown tag " << tag;
valid_ = false;
return false;
}
bool CameraMetadata::updateEntry(uint32_t tag, const void *data, size_t count,
size_t elementSize)
{
if (!valid_)
return false;
camera_metadata_entry_t entry;
int ret = find_camera_metadata_entry(metadata_, tag, &entry);
if (ret) {
const char *name = get_camera_metadata_tag_name(tag);
LOG(CameraMetadata, Error)
<< "Failed to update tag "
<< (name ? name : "<unknown>") << ": not present";
return false;
}
if (camera_metadata_type_size[entry.type] != elementSize) {
const char *name = get_camera_metadata_tag_name(tag);
LOG(CameraMetadata, Fatal)
<< "Invalid element size for tag "
<< (name ? name : "<unknown>");
return false;
}
size_t oldSize =
calculate_camera_metadata_entry_data_size(entry.type,
entry.count);
size_t newSize =
calculate_camera_metadata_entry_data_size(entry.type,
count);
size_t sizeIncrement = newSize - oldSize > 0 ? newSize - oldSize : 0;
if (!resize(0, sizeIncrement)) {
LOG(CameraMetadata, Error) << "Failed to resize";
valid_ = false;
return false;
}
ret = update_camera_metadata_entry(metadata_, entry.index, data,
count, nullptr);
if (!ret)
return true;
const char *name = get_camera_metadata_tag_name(tag);
LOG(CameraMetadata, Error)
<< "Failed to update tag " << (name ? name : "<unknown>");
valid_ = false;
return false;
}
camera_metadata_t *CameraMetadata::getMetadata()
{
return valid_ ? metadata_ : nullptr;
}
const camera_metadata_t *CameraMetadata::getMetadata() const
{
return valid_ ? metadata_ : nullptr;
}
|
