libcamera v0.6.0 Supporting cameras in Linux since 2019

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ipa_manager.h
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1/* SPDX-License-Identifier: LGPL-2.1-or-later */
2/*
3 * Copyright (C) 2019, Google Inc.
4 *
5 * Image Processing Algorithm module manager
6 */
7
8#pragma once
9
10#include <memory>
11#include <stdint.h>
12#include <vector>
13
14#include <libcamera/base/log.h>
15
16#include <libcamera/ipa/ipa_interface.h>
17#include <libcamera/ipa/ipa_module_info.h>
18
19#include "libcamera/internal/camera_manager.h"
20#include "libcamera/internal/global_configuration.h"
21#include "libcamera/internal/ipa_module.h"
22#include "libcamera/internal/pipeline_handler.h"
23#include "libcamera/internal/pub_key.h"
24
25 namespace libcamera {
26
27 LOG_DECLARE_CATEGORY(IPAManager)
28
29class IPAManager
30{
31 public:
32 IPAManager(const GlobalConfiguration &configuration);
33 ~IPAManager();
34
35 template<typename T>
36 static std::unique_ptr<T> createIPA(PipelineHandler *pipe,
37 uint32_t minVersion,
38 uint32_t maxVersion)
39 {
40 CameraManager *cm = pipe->cameraManager();
41 IPAManager *self = cm->_d()->ipaManager();
42 IPAModule *m = self->module(pipe, minVersion, maxVersion);
43 if (!m)
44 return nullptr;
45
46 const GlobalConfiguration &configuration = cm->_d()->configuration();
47
48 auto proxy = [&]() -> std::unique_ptr<T> {
49 if (self->isSignatureValid(m))
50 return std::make_unique<typename T::Threaded>(m, configuration);
51 else
52 return std::make_unique<typename T::Isolated>(m, configuration);
53 }();
54
55 if (!proxy->isValid()) {
56 LOG(IPAManager, Error) << "Failed to load proxy";
57 return nullptr;
58 }
59
60 return proxy;
61 }
62
63#if HAVE_IPA_PUBKEY
64 static const PubKey &pubKey()
65 {
66 return pubKey_;
67 }
68#endif
69
70 private:
71 void parseDir(const char *libDir, unsigned int maxDepth,
72 std::vector<std::string> &files);
73 unsigned int addDir(const char *libDir, unsigned int maxDepth = 0);
74
75 IPAModule *module(PipelineHandler *pipe, uint32_t minVersion,
76 uint32_t maxVersion);
77
78 bool isSignatureValid(IPAModule *ipa) const;
79
80 std::vector<std::unique_ptr<IPAModule>> modules_;
81
82#if HAVE_IPA_PUBKEY
83 static const uint8_t publicKeyData_[];
84 static const PubKey pubKey_;
85 bool forceIsolation_;
86#endif
87};
88
89} /* namespace libcamera */
libcamera::CameraManager
Provide access and manage all cameras in the system.
Definition camera_manager.h:25
libcamera::Extensible::_d
const T * _d() const
Retrieve the private data instance.
Definition class.h:94
libcamera::GlobalConfiguration
Support for global libcamera configuration.
Definition global_configuration.h:22
libcamera::IPAManager
Manager for IPA modules.
Definition ipa_manager.h:30
libcamera::IPAManager::IPAManager
IPAManager(const GlobalConfiguration &configuration)
Construct an IPAManager instance.
Definition ipa_manager.cpp:107
libcamera::IPAManager::createIPA
static std::unique_ptr< T > createIPA(PipelineHandler *pipe, uint32_t minVersion, uint32_t maxVersion)
Create an IPA proxy that matches a given pipeline handler.
Definition ipa_manager.h:36
libcamera::IPAManager::pubKey
static const PubKey & pubKey()
Retrieve the IPA module signing public key.
Definition ipa_manager.h:64
libcamera::IPAModule
Wrapper around IPA module shared object.
Definition ipa_module.h:24
libcamera::PipelineHandler
Create and manage cameras based on a set of media devices.
Definition pipeline_handler.h:34
libcamera::PipelineHandler::cameraManager
CameraManager * cameraManager() const
Retrieve the CameraManager that this pipeline handler belongs to.
Definition pipeline_handler.h:71
libcamera::PubKey
Public key wrapper for signature verification.
Definition pub_key.h:23
camera_manager.h
Internal camera manager support.
ipa_interface.h
Image Processing Algorithm interface.
ipa_module.h
Image Processing Algorithm module.
ipa_module_info.h
Image Processing Algorithm module information.
log.h
Logging infrastructure.
LOG_DECLARE_CATEGORY
#define LOG_DECLARE_CATEGORY(name)
Declare a category of log messages.
Definition log.h:51
LOG
#define LOG(category, severity)
Log a message.
Definition log.h:123
libcamera::ipa
The IPA (Image Processing Algorithm) namespace.
Definition af.cpp:58
libcamera
Top-level libcamera namespace.
Definition backtrace.h:17
pipeline_handler.h
Create pipelines and cameras from a set of media devices.
pub_key.h
Public key signature verification.