src/lib/Communication.h

   1 #pragma once
   2 /*
   3  * This file is part of the libCEC(R) library.
   4  *
   5  * libCEC(R) is Copyright (C) 2011 Pulse-Eight Limited.  All rights reserved.
   6  * libCEC(R) is an original work, containing original code.
   7  *
   8  * libCEC(R) is a trademark of Pulse-Eight Limited.
   9  *
  10  * This program is dual-licensed; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23  *
  24  *
  25  * Alternatively, you can license this library under a commercial license,
  26  * please contact Pulse-Eight Licensing for more information.
  27  *
  28  * For more information contact:
  29  * Pulse-Eight Licensing       <license@pulse-eight.com>
  30  *     http://www.pulse-eight.com/
  31  *     http://www.pulse-eight.net/
  32  */
  33
  34 #include <queue>
  35 #include <stdio.h>
  36 #include "../../include/CECExports.h"
  37 #include "../../include/CECTypes.h"
  38 #include "util/buffer.h"
  39
  40 class CSerialPort;
  41
  42 namespace CEC
  43 {
  44   class CCECParser;
  45
  46   class CCommunication
  47   {
  48   public:
  49     CCommunication(CCECParser *parser);
  50     virtual ~CCommunication();
  51
  52     bool Open(const char *strPort, int iBaudRate = 38400, int iTimeoutMs = 10000);
  53     bool Read(cec_frame &msg, int iTimeout = 1000);
  54     bool Write(const cec_frame &frame);
  55     void Close(void);
  56     bool IsOpen(void) const { return !m_bStop && m_bStarted; }
  57     std::string GetError(void) const;
  58
  59     static void *ReaderThreadHandler(CCommunication *reader);
  60     void *ReaderProcess(void);
  61   private:
  62     void AddData(uint8_t *data, int iLen);
  63     bool ReadFromDevice(int iTimeout);
  64
  65     CSerialPort *        m_port;
  66     CCECParser *         m_parser;
  67     uint8_t*             m_inbuf;
  68     int                  m_iInbufSize;
  69     int                  m_iInbufUsed;
  70     bool                 m_bStarted;
  71     bool                 m_bStop;
  72     pthread_t            m_thread;
  73     CMutex               m_commMutex;
  74     CMutex               m_bufferMutex;
  75     CCondition           m_condition;
  76   };
  77 };