src/lib/LibCEC.cpp

   1 /*
   2  * This file is part of the libCEC(R) library.
   3  *
   4  * libCEC(R) is Copyright (C) 2011 Pulse-Eight Limited.  All rights reserved.
   5  * libCEC(R) is an original work, containing original code.
   6  *
   7  * libCEC(R) is a trademark of Pulse-Eight Limited.
   8  *
   9  * This program is dual-licensed; 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.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  22  *
  23  *
  24  * Alternatively, you can license this library under a commercial license,
  25  * please contact Pulse-Eight Licensing for more information.
  26  *
  27  * For more information contact:
  28  * Pulse-Eight Licensing       <license@pulse-eight.com>
  29  *     http://www.pulse-eight.com/
  30  *     http://www.pulse-eight.net/
  31  */
  32
  33 #include "LibCEC.h"
  34
  35 #include "AdapterCommunication.h"
  36 #include "AdapterDetection.h"
  37 #include "CECProcessor.h"
  38 #include "util/StdString.h"
  39 #include "util/timeutils.h"
  40
  41 using namespace std;
  42 using namespace CEC;
  43
  44 CLibCEC::CLibCEC(const char *strDeviceName, cec_logical_address iLogicalAddress /* = CECDEVICE_PLAYBACKDEVICE1 */, int iPhysicalAddress /* = CEC_DEFAULT_PHYSICAL_ADDRESS */) :
  45     m_iCurrentButton(CEC_USER_CONTROL_CODE_UNKNOWN),
  46     m_buttontime(0)
  47 {
  48   m_comm = new CAdapterCommunication(this);
  49   m_cec = new CCECProcessor(this, m_comm, strDeviceName, iLogicalAddress, iPhysicalAddress);
  50 }
  51
  52 CLibCEC::~CLibCEC(void)
  53 {
  54   delete m_cec;
  55   m_cec = NULL;
  56
  57   delete m_comm;
  58   m_comm = NULL;
  59 }
  60
  61 bool CLibCEC::Open(const char *strPort, int iTimeoutMs /* = 10000 */)
  62 {
  63   if (!m_comm)
  64     return false;
  65
  66   if (m_comm->IsOpen())
  67   {
  68     AddLog(CEC_LOG_ERROR, "connection already open");
  69     return false;
  70   }
  71
  72   if (!m_comm->Open(strPort, 38400, iTimeoutMs))
  73   {
  74     AddLog(CEC_LOG_ERROR, "could not open a connection");
  75     return false;
  76   }
  77
  78   if (!m_cec->Start())
  79   {
  80     AddLog(CEC_LOG_ERROR, "could not start CEC communications");
  81     return false;
  82   }
  83
  84   return true;
  85 }
  86
  87 void CLibCEC::Close(void)
  88 {
  89   if (m_cec)
  90     m_cec->StopThread();
  91   if (m_comm)
  92     m_comm->Close();
  93 }
  94
  95 int CLibCEC::FindAdapters(std::vector<cec_adapter> &deviceList, const char *strDevicePath /* = NULL */)
  96 {
  97   CStdString strDebug;
  98   if (strDevicePath)
  99     strDebug.Format("trying to autodetect the com port for device path '%s'", strDevicePath);
 100   else
 101     strDebug.Format("trying to autodetect all CEC adapters");
 102   AddLog(CEC_LOG_DEBUG, strDebug);
 103
 104   return CAdapterDetection::FindAdapters(deviceList, strDevicePath);
 105 }
 106
 107 bool CLibCEC::PingAdapter(void)
 108 {
 109   return m_comm ? m_comm->PingAdapter() : false;
 110 }
 111
 112 bool CLibCEC::StartBootloader(void)
 113 {
 114   return m_comm ? m_comm->StartBootloader() : false;
 115 }
 116
 117 int CLibCEC::GetMinVersion(void)
 118 {
 119   return CEC_MIN_VERSION;
 120 }
 121
 122 int CLibCEC::GetLibVersion(void)
 123 {
 124   return CEC_LIB_VERSION;
 125 }
 126
 127 bool CLibCEC::GetNextLogMessage(cec_log_message *message)
 128 {
 129   return m_logBuffer.Pop(*message);
 130 }
 131
 132 bool CLibCEC::GetNextKeypress(cec_keypress *key)
 133 {
 134   return m_keyBuffer.Pop(*key);
 135 }
 136
 137 bool CLibCEC::GetNextCommand(cec_command *command)
 138 {
 139   return m_commandBuffer.Pop(*command);
 140 }
 141
 142 bool CLibCEC::Transmit(const cec_frame &data, bool bWaitForAck /* = true */)
 143 {
 144   return m_cec ? m_cec->Transmit(data, bWaitForAck) : false;
 145 }
 146
 147 bool CLibCEC::SetLogicalAddress(cec_logical_address iLogicalAddress)
 148 {
 149   return m_cec ? m_cec->SetLogicalAddress(iLogicalAddress) : false;
 150 }
 151
 152 bool CLibCEC::PowerOnDevices(cec_logical_address address /* = CECDEVICE_TV */)
 153 {
 154   return m_cec ? m_cec->PowerOnDevices(address) : false;
 155 }
 156
 157 bool CLibCEC::StandbyDevices(cec_logical_address address /* = CECDEVICE_BROADCAST */)
 158 {
 159   return m_cec ? m_cec->StandbyDevices(address) : false;
 160 }
 161
 162 bool CLibCEC::SetActiveView(void)
 163 {
 164   return m_cec ? m_cec->SetActiveView() : false;
 165 }
 166
 167 bool CLibCEC::SetInactiveView(void)
 168 {
 169   return m_cec ? m_cec->SetInactiveView() : false;
 170 }
 171
 172 void CLibCEC::AddLog(cec_log_level level, const string &strMessage)
 173 {
 174   cec_log_message message;
 175   message.level = level;
 176   message.message.assign(strMessage.c_str());
 177   m_logBuffer.Push(message);
 178 }
 179
 180 void CLibCEC::AddKey(void)
 181 {
 182   if (m_iCurrentButton != CEC_USER_CONTROL_CODE_UNKNOWN)
 183   {
 184     cec_keypress key;
 185     key.duration = (unsigned int) (GetTimeMs() - m_buttontime);
 186     key.keycode = m_iCurrentButton;
 187     m_keyBuffer.Push(key);
 188     m_iCurrentButton = CEC_USER_CONTROL_CODE_UNKNOWN;
 189     m_buttontime = 0;
 190   }
 191 }
 192
 193 void CLibCEC::AddCommand(cec_logical_address source, cec_logical_address destination, cec_opcode opcode, cec_frame *parameters)
 194 {
 195   cec_command command;
 196   command.source       = source;
 197   command.destination  = destination;
 198   command.opcode       = opcode;
 199   if (parameters)
 200     command.parameters = *parameters;
 201   if (m_commandBuffer.Push(command))
 202   {
 203     CStdString strDebug;
 204     strDebug.Format("stored command '%d' in the command buffer. buffer size = %d", opcode, m_commandBuffer.Size());
 205     AddLog(CEC_LOG_DEBUG, strDebug);
 206   }
 207   else
 208   {
 209     AddLog(CEC_LOG_WARNING, "command buffer is full");
 210   }
 211 }
 212
 213 void CLibCEC::CheckKeypressTimeout(void)
 214 {
 215   if (m_iCurrentButton != CEC_USER_CONTROL_CODE_UNKNOWN && GetTimeMs() - m_buttontime > CEC_BUTTON_TIMEOUT)
 216   {
 217     AddKey();
 218     m_iCurrentButton = CEC_USER_CONTROL_CODE_UNKNOWN;
 219   }
 220 }
 221
 222 void CLibCEC::SetCurrentButton(cec_user_control_code iButtonCode)
 223 {
 224   m_iCurrentButton = iButtonCode;
 225   m_buttontime = GetTimeMs();
 226 }
 227
 228 DECLSPEC void * CECCreate(const char *strDeviceName, CEC::cec_logical_address iLogicalAddress /*= CEC::CECDEVICE_PLAYBACKDEVICE1 */, int iPhysicalAddress /* = CEC_DEFAULT_PHYSICAL_ADDRESS */)
 229 {
 230   return static_cast< void* > (new CLibCEC(strDeviceName, iLogicalAddress, iPhysicalAddress));
 231 }