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      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
      5  * use this file except in compliance with the License. You may obtain a copy of
      6  * the License at
      7  *
      8  * http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
     12  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
     13  * License for the specific language governing permissions and limitations under
     14  * the License.
     15  */
     16 
     17 #ifndef CTSAUDIO_LOG_H
     18 #define CTSAUDIO_LOG_H
     19 
     20 #include <stdio.h>
     21 #include <iostream>
     22 #include <fstream>
     23 
     24 #include "FileUtil.h"
     25 
     26 class Log: public FileUtil {
     27 public:
     28     enum LogLevel {
     29         ELogV = 0,
     30         ELogD = 1,
     31         ELogI = 2,
     32         ELogW = 3,
     33         ELogE = 4
     34     };
     35 
     36     static Log* Instance(const char* dirName = NULL);
     37     static void Finalize();
     38 
     39 
     40     void printf(LogLevel level, const char* fmt, ...);
     41     void setLogLevel(LogLevel level);
     42     LogLevel getLogLevel() {
     43         return mLogLevel;
     44     };
     45 private:
     46     Log();
     47     virtual ~Log();
     48     virtual bool init(const char* dirName);
     49 
     50 private:
     51     static Log* mInstance;
     52     LogLevel mLogLevel;
     53 };
     54 
     55 #define LOGE(x...) do { Log::Instance()->printf(Log::ELogE, x); \
     56     Log::Instance()->printf(Log::ELogE, "  file %s line %d", __FILE__, __LINE__); } while(0)
     57 #define LOGW(x...) do { Log::Instance()->printf(Log::ELogW, x); } while(0)
     58 #define LOGI(x...) do { Log::Instance()->printf(Log::ELogI, x); } while(0)
     59 #define LOGD(x...) do { Log::Instance()->printf(Log::ELogD, x); } while(0)
     60 #define LOGV(x...) do { Log::Instance()->printf(Log::ELogV, x); } while(0)
     61 
     62 #define MSG(x...) do { Log::Instance()->printf(Log::ELogE, x); } while(0)
     63 
     64 #define ASSERT(cond) if(!(cond)) {  Log::Instance()->printf(Log::ELogE, \
     65         "assertion failed %s %d", __FILE__, __LINE__); \
     66     Log::Finalize(); \
     67     *(char*)0 = 0; /* this will crash */};
     68 
     69 #endif // CTSAUDIO_LOG_H
     70