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
26namespace XCam {
27
28#define XCAM_DEFAULT_3A_LIB_DIR "/usr/lib/xcam/plugins/3a"
29
30SmartPtr<X3aAnalyzerManager> X3aAnalyzerManager::_instance(NULL);
31Mutex X3aAnalyzerManager::_mutex;
32
33SmartPtr<X3aAnalyzerManager>
34X3aAnalyzerManager::instance()
35{
36    SmartLock lock(_mutex);
37    if (_instance.ptr())
38        return _instance;
39    _instance = new X3aAnalyzerManager;
40    return _instance;
41}
42
43X3aAnalyzerManager::X3aAnalyzerManager ()
44{
45    XCAM_LOG_DEBUG ("X3aAnalyzerManager construction");
46}
47X3aAnalyzerManager::~X3aAnalyzerManager ()
48{
49    XCAM_LOG_DEBUG ("X3aAnalyzerManager destruction");
50}
51
52SmartPtr<X3aAnalyzer>
53X3aAnalyzerManager::create_analyzer()
54{
55    SmartPtr<X3aAnalyzer> analyzer = find_analyzer();
56    if (!analyzer.ptr())
57        analyzer = new X3aAnalyzerSimple;
58    return analyzer;
59}
60
61SmartPtr<X3aAnalyzer>
62X3aAnalyzerManager::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
92SmartPtr<X3aAnalyzer>
93X3aAnalyzerManager::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