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
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* ipa_manager.cpp - Image Processing Algorithm module manager
*/
#include "ipa_manager.h"
#include <dirent.h>
#include <string.h>
#include <sys/types.h>
#include "ipa_module.h"
#include "ipa_proxy.h"
#include "log.h"
#include "pipeline_handler.h"
#include "utils.h"
/**
* \file ipa_manager.h
* \brief Image Processing Algorithm module manager
*/
namespace libcamera {
LOG_DEFINE_CATEGORY(IPAManager)
/**
* \class IPAManager
* \brief Manager for IPA modules
*/
IPAManager::IPAManager()
{
unsigned int ipaCount = 0;
int ret;
ret = addDir(IPA_MODULE_DIR);
if (ret > 0)
ipaCount += ret;
const char *modulePaths = utils::secure_getenv("LIBCAMERA_IPA_MODULE_PATH");
if (!modulePaths) {
if (!ipaCount)
LOG(IPAManager, Warning)
<< "No IPA found in '" IPA_MODULE_DIR "'";
return;
}
const char *paths = modulePaths;
while (1) {
const char *delim = strchrnul(paths, ':');
size_t count = delim - paths;
if (count) {
std::string path(paths, count);
ret = addDir(path.c_str());
if (ret > 0)
ipaCount += ret;
}
if (*delim == '\0')
break;
paths += count + 1;
}
if (!ipaCount)
LOG(IPAManager, Warning)
<< "No IPA found in '" IPA_MODULE_DIR "' and '"
<< modulePaths << "'";
}
IPAManager::~IPAManager()
{
for (IPAModule *module : modules_)
delete module;
}
/**
* \brief Retrieve the IPA manager instance
*
* The IPAManager is a singleton and can't be constructed manually. This
* function shall instead be used to retrieve the single global instance of the
* manager.
*
* \return The IPA manager instance
*/
IPAManager *IPAManager::instance()
{
static IPAManager ipaManager;
return &ipaManager;
}
/**
* \brief Load IPA modules from a directory
* \param[in] libDir directory to search for IPA modules
*
* This method tries to create an IPAModule instance for every shared object
* found in \a libDir, and skips invalid IPA modules.
*
* \return Number of modules loaded by this call, or a negative error code
* otherwise
*/
int IPAManager::addDir(const char *libDir)
{
struct dirent *ent;
DIR *dir;
dir = opendir(libDir);
if (!dir)
return -errno;
unsigned int count = 0;
while ((ent = readdir(dir)) != nullptr) {
int offset = strlen(ent->d_name) - 3;
if (offset < 0)
continue;
if (strcmp(&ent->d_name[offset], ".so"))
continue;
IPAModule *ipaModule = new IPAModule(std::string(libDir) +
"/" + ent->d_name);
if (!ipaModule->isValid()) {
delete ipaModule;
continue;
}
modules_.push_back(ipaModule);
count++;
}
closedir(dir);
return count;
}
/**
* \brief Create an IPA interface that matches a given pipeline handler
* \param[in] pipe The pipeline handler that wants a matching IPA interface
* \param[in] minVersion Minimum acceptable version of IPA module
* \param[in] maxVersion Maximum acceptable version of IPA module
*
* \return A newly created IPA interface, or nullptr if no matching
* IPA module is found or if the IPA interface fails to initialize
*/
std::unique_ptr<IPAInterface> IPAManager::createIPA(PipelineHandler *pipe,
uint32_t maxVersion,
uint32_t minVersion)
{
IPAModule *m = nullptr;
for (IPAModule *module : modules_) {
if (module->match(pipe, minVersion, maxVersion)) {
m = module;
break;
}
}
if (!m)
return nullptr;
if (!m->isOpenSource()) {
IPAProxyFactory *pf = nullptr;
std::vector<IPAProxyFactory *> &factories = IPAProxyFactory::factories();
for (IPAProxyFactory *factory : factories) {
/* TODO: Better matching */
if (!strcmp(factory->name().c_str(), "IPAProxyLinux")) {
pf = factory;
break;
}
}
if (!pf) {
LOG(IPAManager, Error) << "Failed to get proxy factory";
return nullptr;
}
std::unique_ptr<IPAProxy> proxy = pf->create(m);
if (!proxy->isValid()) {
LOG(IPAManager, Error) << "Failed to load proxy";
return nullptr;
}
return proxy;
}
if (!m->load())
return nullptr;
return m->createInstance();
}
} /* namespace libcamera */
|
