src/adaptation/OverrideLog.cpp

/******************************************************************************
 *
 *  Copyright (C) 2012 Broadcom Corporation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at:
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 ******************************************************************************/

/******************************************************************************
 *
 *  Override the ALOGD(), ALOGE(), and other logging macros from
 *  /system/core/include/cutils/log.h
 *
 ******************************************************************************/
#include "OverrideLog.h"
#include <cutils/properties.h>
#include "config.h"
#define LOG_TAG "BrcmNfcJni"


/*******************************************************************************
**
** Function:        initializeGlobalAppLogLevel
**
** Description:     Initialize and get global logging level from .conf or
**                  Android property nfc.app_log_level.  The Android property
**                  overrides .conf variable.
**
** Returns:         Global log level:
**                  BT_TRACE_LEVEL_NONE    0        * No trace messages to be generated
**                  BT_TRACE_LEVEL_ERROR   1        * Error condition trace messages
**                  BT_TRACE_LEVEL_WARNING 2        * Warning condition trace messages
**                  BT_TRACE_LEVEL_API     3        * API traces
**                  BT_TRACE_LEVEL_EVENT   4        * Debug messages for events
**                  BT_TRACE_LEVEL_DEBUG   5        * Debug messages (general)
**
*******************************************************************************/
unsigned char initializeGlobalAppLogLevel ()
{
    unsigned long num = 0;
    char valueStr [PROPERTY_VALUE_MAX] = {0};

    GetNumValue (NAME_APPL_TRACE_LEVEL, &num, sizeof(num));
    appl_trace_level = (unsigned char) num;

    int len = property_get ("nfc.app_log_level", valueStr, "");
    if (len > 0)
    {
        //let Android property override .conf variable
        sscanf (valueStr, "%lu", &num);
        appl_trace_level = (unsigned char) num;
    }

    //0xFF is a special value used by the stack to query the current
    //trace level; it does not change any trace level
    if (appl_trace_level == 0xFF)
        appl_trace_level = BT_TRACE_LEVEL_DEBUG;
    ALOGD ("%s: level=%u", __FUNCTION__, appl_trace_level);
    return appl_trace_level;
}