src/lib/devices/CECBusDevice.h

   1 #pragma once
   2 /*
   3  * This file is part of the libCEC(R) library.
   4  *
   5  * libCEC(R) is Copyright (C) 2011-2012 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 <set>
  35 #include <map>
  36 #include "lib/platform/threads/mutex.h"
  37 #include "lib/platform/util/StdString.h"
  38
  39 namespace CEC
  40 {
  41   class CCECClient;
  42   class CCECProcessor;
  43   class CCECCommandHandler;
  44   class CCECAudioSystem;
  45   class CCECPlaybackDevice;
  46   class CCECRecordingDevice;
  47   class CCECTuner;
  48   class CCECTV;
  49
  50   class CResponse
  51   {
  52   public:
  53     CResponse(cec_opcode opcode) :
  54         m_opcode(opcode){}
  55     ~CResponse(void)
  56     {
  57       Broadcast();
  58     }
  59
  60     bool Wait(uint32_t iTimeout)
  61     {
  62       return m_event.Wait(iTimeout);
  63     }
  64
  65     void Broadcast(void)
  66     {
  67       m_event.Broadcast();
  68     }
  69
  70   private:
  71     cec_opcode       m_opcode;
  72     PLATFORM::CEvent m_event;
  73   };
  74
  75   class CWaitForResponse
  76   {
  77   public:
  78     CWaitForResponse(void) {}
  79     ~CWaitForResponse(void)
  80     {
  81       Clear();
  82     }
  83
  84     void Clear()
  85     {
  86       PLATFORM::CLockObject lock(m_mutex);
  87       for (std::map<cec_opcode, CResponse*>::iterator it = m_waitingFor.begin(); it != m_waitingFor.end(); it++)
  88         it->second->Broadcast();
  89       m_waitingFor.clear();
  90     }
  91
  92     bool Wait(cec_opcode opcode, uint32_t iTimeout = CEC_DEFAULT_TRANSMIT_WAIT)
  93     {
  94       CResponse *response = GetEvent(opcode);
  95       return response ? response->Wait(iTimeout) : false;
  96     }
  97
  98     void Received(cec_opcode opcode)
  99     {
 100       CResponse *response = GetEvent(opcode);
 101       if (response)
 102         response->Broadcast();
 103     }
 104
 105   private:
 106     CResponse *GetEvent(cec_opcode opcode)
 107     {
 108       CResponse *retVal(NULL);
 109       {
 110         PLATFORM::CLockObject lock(m_mutex);
 111         std::map<cec_opcode, CResponse*>::iterator it = m_waitingFor.find(opcode);
 112         if (it != m_waitingFor.end())
 113         {
 114           retVal = it->second;
 115         }
 116         else
 117         {
 118           retVal = new CResponse(opcode);
 119           m_waitingFor[opcode] = retVal;
 120         }
 121         return retVal;
 122       }
 123     }
 124
 125     PLATFORM::CMutex                 m_mutex;
 126     std::map<cec_opcode, CResponse*> m_waitingFor;
 127   };
 128
 129   class CCECBusDevice
 130   {
 131     friend class CCECProcessor;
 132
 133   public:
 134     CCECBusDevice(CCECProcessor *processor, cec_logical_address address, uint16_t iPhysicalAddress = CEC_INVALID_PHYSICAL_ADDRESS);
 135     virtual ~CCECBusDevice(void);
 136
 137     virtual bool                  ReplaceHandler(bool bActivateSource = true);
 138
 139     // TODO use something smarter than this
 140     /*!
 141      * @brief Get the command handler for this device. Call MarkHandlerReady() when done with it.
 142      * @return The current handler.
 143      */
 144     virtual CCECCommandHandler *  GetHandler(void);
 145
 146     /*!
 147      * @brief To be called after GetHandler(), when no longer using it.
 148      */
 149     virtual void                  MarkHandlerReady(void) { MarkReady(); }
 150
 151     virtual CCECProcessor *       GetProcessor(void) const      { return m_processor; }
 152     virtual uint64_t              GetLastActive(void) const     { return m_iLastActive; }
 153     virtual cec_device_type       GetType(void) const           { return m_type; }
 154     virtual cec_logical_address   GetLogicalAddress(void) const { return m_iLogicalAddress; }
 155     virtual const char*           GetLogicalAddressName(void) const;
 156     virtual bool                  IsPresent(void);
 157     virtual bool                  IsHandledByLibCEC(void);
 158
 159     virtual bool                  HandleCommand(const cec_command &command);
 160     virtual bool                  IsUnsupportedFeature(cec_opcode opcode);
 161     virtual void                  SetUnsupportedFeature(cec_opcode opcode);
 162
 163     virtual bool                  TransmitKeypress(const cec_logical_address initiator, cec_user_control_code key, bool bWait = true);
 164     virtual bool                  TransmitKeyRelease(const cec_logical_address initiator, bool bWait = true);
 165
 166     virtual cec_version           GetCecVersion(const cec_logical_address initiator, bool bUpdate = false);
 167     virtual void                  SetCecVersion(const cec_version newVersion);
 168     virtual bool                  RequestCecVersion(const cec_logical_address initiator, bool bWaitForResponse = true);
 169     virtual bool                  TransmitCECVersion(const cec_logical_address destination, bool bIsReply);
 170
 171     virtual cec_menu_language &   GetMenuLanguage(const cec_logical_address initiator, bool bUpdate = false);
 172     virtual void                  SetMenuLanguage(const char *strLanguage);
 173     virtual void                  SetMenuLanguage(const cec_menu_language &menuLanguage);
 174     virtual bool                  RequestMenuLanguage(const cec_logical_address initiator, bool bWaitForResponse = true);
 175     virtual bool                  TransmitSetMenuLanguage(const cec_logical_address destination, bool bIsReply);
 176
 177     virtual bool                  TransmitOSDString(const cec_logical_address destination, cec_display_control duration, const char *strMessage, bool bIsReply);
 178
 179     virtual CStdString            GetCurrentOSDName(void);
 180     virtual CStdString            GetOSDName(const cec_logical_address initiator, bool bUpdate = false);
 181     virtual void                  SetOSDName(CStdString strName);
 182     virtual bool                  RequestOSDName(const cec_logical_address source, bool bWaitForResponse = true);
 183     virtual bool                  TransmitOSDName(const cec_logical_address destination, bool bIsReply);
 184
 185     virtual uint16_t              GetCurrentPhysicalAddress(void);
 186     virtual bool                  HasValidPhysicalAddress(void);
 187     virtual uint16_t              GetPhysicalAddress(const cec_logical_address initiator, bool bSuppressUpdate = false);
 188     virtual bool                  SetPhysicalAddress(uint16_t iNewAddress);
 189     virtual bool                  RequestPhysicalAddress(const cec_logical_address initiator, bool bWaitForResponse = true);
 190     virtual bool                  TransmitPhysicalAddress(bool bIsReply);
 191
 192     virtual cec_power_status      GetCurrentPowerStatus(void);
 193     virtual cec_power_status      GetPowerStatus(const cec_logical_address initiator, bool bUpdate = false);
 194     virtual void                  SetPowerStatus(const cec_power_status powerStatus);
 195     virtual bool                  RequestPowerStatus(const cec_logical_address initiator, bool bWaitForResponse = true);
 196     virtual bool                  TransmitPowerState(const cec_logical_address destination, bool bIsReply);
 197
 198     virtual cec_vendor_id         GetCurrentVendorId(void);
 199     virtual cec_vendor_id         GetVendorId(const cec_logical_address initiator, bool bUpdate = false);
 200     virtual const char *          GetVendorName(const cec_logical_address initiator, bool bUpdate = false);
 201     virtual bool                  SetVendorId(uint64_t iVendorId);
 202     virtual bool                  RequestVendorId(const cec_logical_address initiator, bool bWaitForResponse = true);
 203     virtual bool                  TransmitVendorID(const cec_logical_address destination, bool bSendAbort, bool bIsReply);
 204
 205     virtual cec_bus_device_status GetCurrentStatus(void) { return GetStatus(false, true); }
 206     virtual cec_bus_device_status GetStatus(bool bForcePoll = false, bool bSuppressPoll = false);
 207     virtual void                  SetDeviceStatus(const cec_bus_device_status newStatus, cec_version libCECSpecVersion = CEC_VERSION_1_4);
 208     virtual void                  ResetDeviceStatus(void);
 209     virtual bool                  TransmitPoll(const cec_logical_address destination, bool bIsReply);
 210     virtual void                  HandlePoll(const cec_logical_address destination);
 211     virtual void                  HandlePollFrom(const cec_logical_address initiator);
 212     virtual bool                  HandleReceiveFailed(void);
 213
 214     virtual cec_menu_state        GetMenuState(const cec_logical_address initiator);
 215     virtual void                  SetMenuState(const cec_menu_state state);
 216     virtual bool                  TransmitMenuState(const cec_logical_address destination, bool bIsReply);
 217
 218     virtual bool                  ActivateSource(uint64_t iDelay = 0);
 219     virtual bool                  IsActiveSource(void) const    { return m_bActiveSource; }
 220     virtual bool                  RequestActiveSource(bool bWaitForResponse = true);
 221     virtual void                  MarkAsActiveSource(void);
 222     virtual void                  MarkAsInactiveSource(void);
 223     virtual bool                  TransmitActiveSource(bool bIsReply);
 224     virtual bool                  TransmitImageViewOn(void);
 225     virtual bool                  TransmitInactiveSource(void);
 226     virtual bool                  TransmitPendingActiveSourceCommands(void);
 227     virtual void                  SetStreamPath(uint16_t iNewAddress, uint16_t iOldAddress = CEC_INVALID_PHYSICAL_ADDRESS);
 228
 229     virtual bool                  PowerOn(const cec_logical_address initiator);
 230     virtual bool                  Standby(const cec_logical_address initiator);
 231
 232     virtual bool                  TryLogicalAddress(cec_version libCECSpecVersion = CEC_VERSION_1_4);
 233
 234     CCECClient *                  GetClient(void);
 235     void                          SignalOpcode(cec_opcode opcode);
 236     bool                          WaitForOpcode(cec_opcode opcode);
 237
 238            CCECAudioSystem *      AsAudioSystem(void);
 239     static CCECAudioSystem *      AsAudioSystem(CCECBusDevice *device);
 240            CCECPlaybackDevice *   AsPlaybackDevice(void);
 241     static CCECPlaybackDevice *   AsPlaybackDevice(CCECBusDevice *device);
 242            CCECRecordingDevice *  AsRecordingDevice(void);
 243     static CCECRecordingDevice *  AsRecordingDevice(CCECBusDevice *device);
 244            CCECTuner *            AsTuner(void);
 245     static CCECTuner *            AsTuner(CCECBusDevice *device);
 246            CCECTV *               AsTV(void);
 247     static CCECTV *               AsTV(CCECBusDevice *device);
 248
 249   protected:
 250     void CheckVendorIdRequested(const cec_logical_address source);
 251     void MarkBusy(void);
 252     void MarkReady(void);
 253
 254     bool NeedsPoll(void);
 255
 256     cec_device_type       m_type;
 257     CStdString            m_strDeviceName;
 258     uint16_t              m_iPhysicalAddress;
 259     uint16_t              m_iStreamPath;
 260     cec_logical_address   m_iLogicalAddress;
 261     cec_power_status      m_powerStatus;
 262     cec_menu_language     m_menuLanguage;
 263     CCECProcessor      *  m_processor;
 264     CCECCommandHandler *  m_handler;
 265     cec_vendor_id         m_vendor;
 266     bool                  m_bReplaceHandler;
 267     cec_menu_state        m_menuState;
 268     bool                  m_bActiveSource;
 269     uint64_t              m_iLastActive;
 270     uint64_t              m_iLastPowerStateUpdate;
 271     cec_version           m_cecVersion;
 272     cec_bus_device_status m_deviceStatus;
 273     std::set<cec_opcode>  m_unsupportedFeatures;
 274     PLATFORM::CMutex      m_mutex;
 275     PLATFORM::CMutex      m_handlerMutex;
 276     PLATFORM::CEvent      m_replacing;
 277     unsigned              m_iHandlerUseCount;
 278     bool                  m_bAwaitingReceiveFailed;
 279     bool                  m_bVendorIdRequested;
 280     CWaitForResponse     *m_waitForResponse;
 281   };
 282 };