Home | History | Annotate | Download | only in xcore 
      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 (at) 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>
     34 X3aAnalyzerManager::instance()
     35 {
     36     SmartLock lock(_mutex);
     37     if (_instance.ptr())
     38         return _instance;
     39     _instance = new X3aAnalyzerManager;
     40     return _instance;
     41 }
     42 
     43 X3aAnalyzerManager::X3aAnalyzerManager ()
     44 {
     45     XCAM_LOG_DEBUG ("X3aAnalyzerManager construction");
     46 }
     47 X3aAnalyzerManager::~X3aAnalyzerManager ()
     48 {
     49     XCAM_LOG_DEBUG ("X3aAnalyzerManager destruction");
     50 }
     51 
     52 SmartPtr<X3aAnalyzer>
     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>
     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>
     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