src/common.cc

   1 ///
   2 /// \file       common.cc
   3 ///             General Barry interface routines
   4 ///
   5
   6 /*
   7     Copyright (C) 2005-2012, Net Direct Inc. (http://www.netdirect.ca/)
   8
   9     This program is free software; you can redistribute it and/or modify
  10     it under the terms of the GNU General Public License as published by
  11     the Free Software Foundation; either version 2 of the License, or
  12     (at your option) any later version.
  13
  14     This program is distributed in the hope that it will be useful,
  15     but WITHOUT ANY WARRANTY; without even the implied warranty of
  16     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  17
  18     See the GNU General Public License in the COPYING file at the
  19     root directory of this project for more details.
  20 */
  21
  22 #include "common.h"
  23 #include <pthread.h>
  24 #include "debug.h"
  25 #include "config.h"
  26
  27 #ifdef USE_BARRY_SOCKETS
  28 #include "usbwrap.h"
  29 #endif
  30
  31 namespace Barry {
  32
  33 bool __data_dump_mode__;
  34
  35 std::ostream *LogStream = &std::cout;
  36 pthread_mutex_t LogStreamMutex;
  37
  38
  39 //
  40 // Init
  41 //
  42 /// Barry library initializer.  Call this before anything else.
  43 /// This takes care of initializing the lower level libusb.
  44 ///
  45 /// This function is safe to be called multiple times.  The
  46 /// data_dump_mode and the log stream will be updated each time
  47 /// it is called, but the USB library will not be re-initialized.
  48 ///
  49 /// \param[in]  data_dump_mode  If set to true, the protocol conversation
  50 ///                             will be sent to the logStream specified
  51 ///                             in the second argument.
  52 /// \param[in]  LogStream       Pointer to std::ostream object to use for
  53 ///                             debug output and logging.  Defaults to
  54 ///                             std::cout.
  55 ///
  56 void Init(bool data_dump_mode, std::ostream *logStream)
  57 {
  58         static bool initialized = false;
  59
  60 #ifdef USE_BARRY_SOCKETS
  61         Usb::LibraryInterface::SetDataDump(data_dump_mode);
  62 #endif
  63
  64         // perform one-time initalization
  65         if( !initialized ) {
  66 #ifdef USE_BARRY_SOCKETS
  67                 // Should call Usb::Uninit at some point,
  68                 // but there isn't currently a deinit call.
  69                 int err = 0;
  70                 if( !Usb::LibraryInterface::Init(&err) ) {
  71                         eout("USB library failed to initialise with libusb error: " << err);
  72                         throw Error("Failed to initialise USB");
  73                         return;
  74                 }
  75 #endif
  76
  77                 // only need to initialize this once
  78                 pthread_mutex_init(&LogStreamMutex, NULL);
  79
  80                 // done
  81                 initialized = true;
  82         }
  83
  84         __data_dump_mode__ = data_dump_mode;
  85         LogStream = logStream;
  86 }
  87
  88 //
  89 // Verbose
  90 //
  91 /// This API call lets the application enable / disable verbose debug
  92 /// output on the fly.
  93 ///
  94 /// \param[in]  data_dump_mode  If set to true, the protocol conversation
  95 ///                             will be sent to the logStream specified
  96 ///                             in the Barry::Init() call.
  97 ///
  98 void Verbose(bool data_dump_mode)
  99 {
 100         __data_dump_mode__ = data_dump_mode;
 101
 102 #ifdef USE_BARRY_SOCKETS
 103         Usb::LibraryInterface::SetDataDump(data_dump_mode);
 104 #endif
 105 }
 106
 107 //
 108 // IsVerbose
 109 //
 110 /// Returns true if data dump mode is enabled.
 111 ///
 112 bool IsVerbose()
 113 {
 114         return __data_dump_mode__;
 115 }
 116
 117 } // namespace Barry
 118