1 /*
2 * x3a_analyzer_manager.cpp - analyzer manager
3 *
4 * Copyright (c) 2014-2015 Intel Corporation
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 *
18 * Author: Wind Yuan <feng.yuan@intel.com>
19 */
20
21 #include "x3a_analyzer_manager.h"
22 #include "x3a_analyzer_simple.h"
23 #include <sys/types.h>
24 #include <dirent.h>
25
26 namespace XCam {
27
28 #define XCAM_DEFAULT_3A_LIB_DIR "/usr/lib/xcam/plugins/3a"
29
30 SmartPtr<X3aAnalyzerManager> X3aAnalyzerManager::_instance(NULL);
31 Mutex X3aAnalyzerManager::_mutex;
32
33 SmartPtr<X3aAnalyzerManager>
instance()34 X3aAnalyzerManager::instance()
35 {
36 SmartLock lock(_mutex);
37 if (_instance.ptr())
38 return _instance;
39 _instance = new X3aAnalyzerManager;
40 return _instance;
41 }
42
X3aAnalyzerManager()43 X3aAnalyzerManager::X3aAnalyzerManager ()
44 {
45 XCAM_LOG_DEBUG ("X3aAnalyzerManager construction");
46 }
~X3aAnalyzerManager()47 X3aAnalyzerManager::~X3aAnalyzerManager ()
48 {
49 XCAM_LOG_DEBUG ("X3aAnalyzerManager destruction");
50 }
51
52 SmartPtr<X3aAnalyzer>
create_analyzer()53 X3aAnalyzerManager::create_analyzer()
54 {
55 SmartPtr<X3aAnalyzer> analyzer = find_analyzer();
56 if (!analyzer.ptr())
57 analyzer = new X3aAnalyzerSimple;
58 return analyzer;
59 }
60
61 SmartPtr<X3aAnalyzer>
find_analyzer()62 X3aAnalyzerManager::find_analyzer ()
63 {
64 char lib_path[512];
65 const char *dir_path = NULL;
66 DIR *dir_3a = NULL;
67 struct dirent *dirent_3a = NULL;
68 SmartPtr<X3aAnalyzer> analyzer;
69
70 dir_path = getenv ("XCAM_3A_LIB");
71 if (!dir_path) {
72 dir_path = XCAM_DEFAULT_3A_LIB_DIR;
73 XCAM_LOG_INFO ("doesn't find environment=>XCAM_3A_LIB, change to default dir:%s", dir_path);
74 }
75 dir_3a = opendir (dir_path);
76 if (dir_3a) {
77 while ((dirent_3a = readdir (dir_3a)) != NULL) {
78 if (dirent_3a->d_type != DT_LNK &&
79 dirent_3a->d_type != DT_REG)
80 continue;
81 snprintf (lib_path, sizeof(lib_path), "%s/%s", dir_path, dirent_3a->d_name);
82 analyzer = load_analyzer_from_binary (lib_path);
83 if (analyzer.ptr())
84 break;
85 }
86 }
87 if (dir_3a)
88 closedir (dir_3a);
89 return analyzer;
90 }
91
92 SmartPtr<X3aAnalyzer>
load_analyzer_from_binary(const char * path)93 X3aAnalyzerManager::load_analyzer_from_binary (const char *path)
94 {
95 SmartPtr<X3aAnalyzer> analyzer;
96
97 XCAM_ASSERT (path);
98
99 _loader.release ();
100 _loader = new DynamicAnalyzerLoader (path);
101
102 SmartPtr<AnalyzerLoader> loader = _loader.dynamic_cast_ptr<AnalyzerLoader> ();
103 analyzer = _loader->load_analyzer (loader);
104
105 if (analyzer.ptr ())
106 return analyzer;
107
108 XCAM_LOG_WARNING ("load 3A analyzer failed from: %s", path);
109 return NULL;
110 }
111
112 };
113
114