libcamera v0.3.2 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 <stdint.h>
11#include <vector>
12
13#include <libcamera/base/log.h>
14
15#include <libcamera/ipa/ipa_interface.h>
16#include <libcamera/ipa/ipa_module_info.h>
17
18#include "libcamera/internal/camera_manager.h"
19#include "libcamera/internal/ipa_module.h"
20#include "libcamera/internal/pipeline_handler.h"
21#include "libcamera/internal/pub_key.h"
22
23 namespace libcamera {
24
25 LOG_DECLARE_CATEGORY(IPAManager)
26
27class IPAManager
28{
29 public:
30 IPAManager();
31 ~IPAManager();
32
33 template<typename T>
34 static std::unique_ptr<T> createIPA(PipelineHandler *pipe,
35 uint32_t minVersion,
36 uint32_t maxVersion)
37 {
38 CameraManager *cm = pipe->cameraManager();
39 IPAManager *self = cm->_d()->ipaManager();
40 IPAModule *m = self->module(pipe, minVersion, maxVersion);
41 if (!m)
42 return nullptr;
43
44 std::unique_ptr<T> proxy = std::make_unique<T>(m, !self->isSignatureValid(m));
45 if (!proxy->isValid()) {
46 LOG(IPAManager, Error) << "Failed to load proxy";
47 return nullptr;
48 }
49
50 return proxy;
51 }
52
53#if HAVE_IPA_PUBKEY
54 static const PubKey &pubKey()
55 {
56 return pubKey_;
57 }
58#endif
59
60 private:
61 void parseDir(const char *libDir, unsigned int maxDepth,
62 std::vector<std::string> &files);
63 unsigned int addDir(const char *libDir, unsigned int maxDepth = 0);
64
65 IPAModule *module(PipelineHandler *pipe, uint32_t minVersion,
66 uint32_t maxVersion);
67
68 bool isSignatureValid(IPAModule *ipa) const;
69
70 std::vector<IPAModule *> modules_;
71
72#if HAVE_IPA_PUBKEY
73 static const uint8_t publicKeyData_[];
74 static const PubKey pubKey_;
75#endif
76};
77
78} /* namespace libcamera */
libcamera::CameraManager
Provide access and manage all cameras in the system.
Definition camera_manager.h:24
libcamera::Extensible::_d
const T * _d() const
Retrieve the private data instance.
Definition class.h:94
libcamera::IPAManager
Manager for IPA modules.
Definition ipa_manager.h:28
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:34
libcamera::IPAManager::pubKey
static const PubKey & pubKey()
Retrieve the IPA module signing public key.
Definition ipa_manager.h:54
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:35
libcamera::PipelineHandler::cameraManager
CameraManager * cameraManager() const
Retrieve the CameraManager that this pipeline handler belongs to.
Definition pipeline_handler.h:69
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:46
LOG
#define LOG(category, severity)
Log a message.
Definition log.h:122
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.