cec: store the status of a bus device: present, not present or handled by libcec

[deb_libcec.git] / src / lib / LibCEC.cpp

/*
 * This file is part of the libCEC(R) library.
 *
 * libCEC(R) is Copyright (C) 2011 Pulse-Eight Limited.  All rights reserved.
 * libCEC(R) is an original work, containing original code.
 *
 * libCEC(R) is a trademark of Pulse-Eight Limited.
 *
 * This program is dual-licensed; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 *
 * Alternatively, you can license this library under a commercial license,
 * please contact Pulse-Eight Licensing for more information.
 *
 * For more information contact:
 * Pulse-Eight Licensing       <license@pulse-eight.com>
 *     http://www.pulse-eight.com/
 *     http://www.pulse-eight.net/
 */

#include "LibCEC.h"

#include "AdapterCommunication.h"
#include "AdapterDetection.h"
#include "CECProcessor.h"
#include "devices/CECBusDevice.h"
#include "util/StdString.h"
#include "platform/timeutils.h"

using namespace std;
using namespace CEC;

CLibCEC::CLibCEC(const char *strDeviceName, cec_device_type_list types) :
    m_iStartTime(GetTimeMs()),
    m_iCurrentButton(CEC_USER_CONTROL_CODE_UNKNOWN),
    m_buttontime(0)
{
  m_comm = new CAdapterCommunication(this);
  m_cec = new CCECProcessor(this, m_comm, strDeviceName, types);
}

CLibCEC::CLibCEC(const char *strDeviceName, cec_logical_address iLogicalAddress /* = CECDEVICE_PLAYBACKDEVICE1 */, uint16_t iPhysicalAddress /* = CEC_DEFAULT_PHYSICAL_ADDRESS */) :
    m_iStartTime(GetTimeMs()),
    m_iCurrentButton(CEC_USER_CONTROL_CODE_UNKNOWN),
    m_buttontime(0)
{
  m_comm = new CAdapterCommunication(this);
  m_cec = new CCECProcessor(this, m_comm, strDeviceName, iLogicalAddress, iPhysicalAddress);
}

CLibCEC::~CLibCEC(void)
{
  Close();
  delete m_cec;
  delete m_comm;
}

bool CLibCEC::Open(const char *strPort, uint32_t iTimeoutMs /* = 10000 */)
{
  if (!m_comm)
  {
    AddLog(CEC_LOG_ERROR, "no comm port");
    return false;
  }

  if (m_comm->IsOpen())
  {
    AddLog(CEC_LOG_ERROR, "connection already open");
    return false;
  }

  int64_t iNow = GetTimeMs();
  int64_t iTarget = iNow + iTimeoutMs;

  bool bOpened(false);
  while (!bOpened && iNow < iTarget)
  {
    bOpened = m_comm->Open(strPort, 38400, iTimeoutMs);
    iNow = GetTimeMs();
  }

  if (!bOpened)
  {
    AddLog(CEC_LOG_ERROR, "could not open a connection");
    return false;
  }

  if (!m_cec->Start())
  {
    AddLog(CEC_LOG_ERROR, "could not start CEC communications");
    return false;
  }

  return true;
}

void CLibCEC::Close(void)
{
  if (m_cec)
    m_cec->StopThread();
  if (m_comm)
    m_comm->Close();
}

int8_t CLibCEC::FindAdapters(cec_adapter *deviceList, uint8_t iBufSize, const char *strDevicePath /* = NULL */)
{
  CStdString strDebug;
  if (strDevicePath)
    strDebug.Format("trying to autodetect the com port for device path '%s'", strDevicePath);
  else
    strDebug.Format("trying to autodetect all CEC adapters");
  AddLog(CEC_LOG_DEBUG, strDebug);

  return CAdapterDetection::FindAdapters(deviceList, iBufSize, strDevicePath);
}

bool CLibCEC::PingAdapter(void)
{
  return m_comm ? m_comm->PingAdapter() : false;
}

bool CLibCEC::StartBootloader(void)
{
  return m_comm ? m_comm->StartBootloader() : false;
}

bool CLibCEC::GetNextLogMessage(cec_log_message *message)
{
  return (m_logBuffer.Pop(*message));
}

bool CLibCEC::GetNextKeypress(cec_keypress *key)
{
  return m_keyBuffer.Pop(*key);
}

bool CLibCEC::GetNextCommand(cec_command *command)
{
  return m_commandBuffer.Pop(*command);
}

bool CLibCEC::Transmit(const cec_command &data)
{
  return m_cec ? m_cec->Transmit(data) : false;
}

bool CLibCEC::SetLogicalAddress(cec_logical_address iLogicalAddress)
{
  return m_cec ? m_cec->SetLogicalAddress(iLogicalAddress) : false;
}

bool CLibCEC::SetPhysicalAddress(uint16_t iPhysicalAddress)
{
  return m_cec ? m_cec->SetPhysicalAddress(iPhysicalAddress) : false;
}

bool CLibCEC::PowerOnDevices(cec_logical_address address /* = CECDEVICE_TV */)
{
  return m_cec && address >= CECDEVICE_TV && address <= CECDEVICE_BROADCAST ? m_cec->m_busDevices[(uint8_t)address]->PowerOn() : false;
}

bool CLibCEC::StandbyDevices(cec_logical_address address /* = CECDEVICE_BROADCAST */)
{
  return m_cec && address >= CECDEVICE_TV && address <= CECDEVICE_BROADCAST ? m_cec->m_busDevices[(uint8_t)address]->Standby() : false;
}

bool CLibCEC::SetActiveSource(cec_device_type type /* = CEC_DEVICE_TYPE_RESERVED */)
{
  return m_cec ? m_cec->SetActiveSource(type) : false;
}

bool CLibCEC::SetActiveView(void)
{
  return m_cec ? m_cec->SetActiveView() : false;
}

bool CLibCEC::SetDeckControlMode(cec_deck_control_mode mode, bool bSendUpdate /* = true */)
{
  return m_cec ? m_cec->SetDeckControlMode(mode, bSendUpdate) : false;
}

bool CLibCEC::SetDeckInfo(cec_deck_info info, bool bSendUpdate /* = true */)
{
  return m_cec ? m_cec->SetDeckInfo(info, bSendUpdate) : false;
}

bool CLibCEC::SetInactiveView(void)
{
  return m_cec ? m_cec->SetInactiveView() : false;
}

bool CLibCEC::SetMenuState(cec_menu_state state, bool bSendUpdate /* = true */)
{
  return m_cec ? m_cec->SetMenuState(state, bSendUpdate) : false;
}

bool CLibCEC::SetOSDString(cec_logical_address iLogicalAddress, cec_display_control duration, const char *strMessage)
{
  return m_cec && iLogicalAddress >= CECDEVICE_TV && iLogicalAddress <= CECDEVICE_BROADCAST ?
      m_cec->m_busDevices[m_cec->GetLogicalAddress()]->TransmitOSDString(iLogicalAddress, duration, strMessage) :
      false;
}

bool CLibCEC::SwitchMonitoring(bool bEnable)
{
  return m_cec ? m_cec->SwitchMonitoring(bEnable) : false;
}

cec_version CLibCEC::GetDeviceCecVersion(cec_logical_address iAddress)
{
  if (m_cec && iAddress >= CECDEVICE_TV && iAddress < CECDEVICE_BROADCAST)
    return m_cec->GetDeviceCecVersion(iAddress);
  return CEC_VERSION_UNKNOWN;
}

bool CLibCEC::GetDeviceMenuLanguage(cec_logical_address iAddress, cec_menu_language *language)
{
  if (m_cec && iAddress >= CECDEVICE_TV && iAddress < CECDEVICE_BROADCAST)
    return m_cec->GetDeviceMenuLanguage(iAddress, language);
  return false;
}

uint64_t CLibCEC::GetDeviceVendorId(cec_logical_address iAddress)
{
  if (m_cec && iAddress >= CECDEVICE_TV && iAddress < CECDEVICE_BROADCAST)
    return m_cec->GetDeviceVendorId(iAddress);
  return 0;
}

cec_power_status CLibCEC::GetDevicePowerStatus(cec_logical_address iAddress)
{
  if (m_cec && iAddress >= CECDEVICE_TV && iAddress < CECDEVICE_BROADCAST)
    return m_cec->GetDevicePowerStatus(iAddress);
  return CEC_POWER_STATUS_UNKNOWN;
}

bool CLibCEC::PollDevice(cec_logical_address iAddress)
{
  if (m_cec && iAddress >= CECDEVICE_TV && iAddress < CECDEVICE_BROADCAST)
    return m_cec->PollDevice(iAddress);
  return false;
}

void CLibCEC::AddLog(cec_log_level level, const string &strMessage)
{
  if (m_cec)
  {
    cec_log_message message;
    message.level = level;
    message.time = GetTimeMs() - m_iStartTime;
    snprintf(message.message, sizeof(message.message), "%s", strMessage.c_str());
    m_logBuffer.Push(message);
  }
}

void CLibCEC::AddKey(cec_keypress &key)
{
  m_keyBuffer.Push(key);
  m_iCurrentButton = CEC_USER_CONTROL_CODE_UNKNOWN;
  m_buttontime = 0;
}

void CLibCEC::AddKey(void)
{
  if (m_iCurrentButton != CEC_USER_CONTROL_CODE_UNKNOWN)
  {
    cec_keypress key;

    key.duration = (unsigned int) (GetTimeMs() - m_buttontime);
    key.keycode = m_iCurrentButton;
    m_keyBuffer.Push(key);
    m_iCurrentButton = CEC_USER_CONTROL_CODE_UNKNOWN;
  }
  m_buttontime = 0;
}

void CLibCEC::AddCommand(const cec_command &command)
{
  if (m_commandBuffer.Push(command))
  {
    CStdString strDebug;
    strDebug.Format("stored command '%2x' in the command buffer. buffer size = %d", command.opcode, m_commandBuffer.Size());
    AddLog(CEC_LOG_DEBUG, strDebug);
  }
  else
  {
    AddLog(CEC_LOG_WARNING, "command buffer is full");
  }
}

void CLibCEC::CheckKeypressTimeout(void)
{
  if (m_iCurrentButton != CEC_USER_CONTROL_CODE_UNKNOWN && GetTimeMs() - m_buttontime > CEC_BUTTON_TIMEOUT)
  {
    AddKey();
    m_iCurrentButton = CEC_USER_CONTROL_CODE_UNKNOWN;
  }
}

void CLibCEC::SetCurrentButton(cec_user_control_code iButtonCode)
{
  m_iCurrentButton = iButtonCode;
  m_buttontime = GetTimeMs();

  /* push keypress to the keybuffer with 0 duration.
     push another press to the keybuffer with the duration set when the button is released */
  cec_keypress key;
  key.duration = 0;
  key.keycode = m_iCurrentButton;
  m_keyBuffer.Push(key);
}

void * CECCreate(const char *strDeviceName, CEC::cec_logical_address iLogicalAddress /*= CEC::CECDEVICE_PLAYBACKDEVICE1 */, uint16_t iPhysicalAddress /* = CEC_DEFAULT_PHYSICAL_ADDRESS */)
{
  return static_cast< void* > (new CLibCEC(strDeviceName, iLogicalAddress, iPhysicalAddress));
}

void * CECInit(const char *strDeviceName, CEC::cec_device_type_list types)
{
  return static_cast< void* > (new CLibCEC(strDeviceName, types));
}

void CECDestroy(CEC::ICECAdapter *instance)
{
  CLibCEC *lib = static_cast< CLibCEC* > (instance);
  if (lib)
    delete lib;
}