src/lib/adapter/Exynos/ExynosCECAdapterCommunication.cpp

   1 /*
   2  * This file is part of the libCEC(R) library.
   3  *
   4  * libCEC Exynos Code is Copyright (C) 2014 Valentin Manea
   5  * libCEC(R) is Copyright (C) 2011-2013 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 "env.h"
  35 #include <fcntl.h>
  36 #include <sys/ioctl.h>
  37
  38
  39 #if defined(HAVE_EXYNOS_API)
  40 #include "ExynosCEC.h"
  41 #include "ExynosCECAdapterCommunication.h"
  42
  43 #include "lib/CECTypeUtils.h"
  44 #include "lib/LibCEC.h"
  45 #include "lib/platform/util/StdString.h"
  46 #include "lib/platform/util/buffer.h"
  47
  48 using namespace std;
  49 using namespace CEC;
  50 using namespace PLATFORM;
  51
  52 #define LIB_CEC m_callback->GetLib()
  53
  54
  55 CExynosCECAdapterCommunication::CExynosCECAdapterCommunication(IAdapterCommunicationCallback *callback) :
  56     IAdapterCommunication(callback),
  57     m_bLogicalAddressChanged(false)
  58 {
  59   CLockObject lock(m_mutex);
  60
  61   m_logicalAddresses.Clear();
  62   m_fd = INVALID_SOCKET_VALUE;
  63 }
  64
  65
  66 CExynosCECAdapterCommunication::~CExynosCECAdapterCommunication(void)
  67 {
  68   Close();
  69 }
  70
  71
  72 bool CExynosCECAdapterCommunication::IsOpen(void)
  73 {
  74   return IsInitialised() && m_fd != INVALID_SOCKET_VALUE;
  75 }
  76
  77
  78 bool CExynosCECAdapterCommunication::Open(uint32_t UNUSED(iTimeoutMs), bool UNUSED(bSkipChecks), bool bStartListening)
  79 {
  80   if (m_fd != INVALID_SOCKET_VALUE)
  81     close(m_fd);
  82
  83   if ((m_fd = open(CEC_EXYNOS_PATH, O_RDWR)) > 0)
  84   {
  85     if (!bStartListening || CreateThread()) {
  86         return true;
  87     }
  88     close(m_fd);
  89   }
  90   return false;
  91 }
  92
  93
  94 void CExynosCECAdapterCommunication::Close(void)
  95 {
  96   StopThread(0);
  97
  98   close(m_fd);
  99   m_fd = INVALID_SOCKET_VALUE;
 100 }
 101
 102
 103 std::string CExynosCECAdapterCommunication::GetError(void) const
 104 {
 105   std::string strError(m_strError);
 106   return strError;
 107 }
 108
 109
 110 cec_adapter_message_state CExynosCECAdapterCommunication::Write(
 111   const cec_command &data, bool &UNUSED(bRetry), uint8_t UNUSED(iLineTimeout), bool UNUSED(bIsReply))
 112 {
 113   uint8_t buffer[CEC_MAX_FRAME_SIZE];
 114   int32_t size = 1;
 115   cec_adapter_message_state rc = ADAPTER_MESSAGE_STATE_ERROR;
 116
 117   if (!IsOpen())
 118     return rc;
 119
 120   if ((size_t)data.parameters.size + data.opcode_set > sizeof(buffer))
 121   {
 122     LIB_CEC->AddLog(CEC_LOG_ERROR, "%s: data size too large !", __func__);
 123     return ADAPTER_MESSAGE_STATE_ERROR;
 124   }
 125
 126   buffer[0] = (data.initiator << 4) | (data.destination & 0x0f);
 127
 128   if (data.opcode_set)
 129   {
 130     buffer[1] = data.opcode;
 131     size++;
 132
 133     memcpy(&buffer[size], data.parameters.data, data.parameters.size);
 134     size += data.parameters.size;
 135   }
 136
 137   if (write(m_fd, (void *)buffer, size) == size)
 138   {
 139     rc = ADAPTER_MESSAGE_STATE_SENT_ACKED;
 140   }
 141   else
 142   {
 143     LIB_CEC->AddLog(CEC_LOG_ERROR, "%s: write failed !", __func__);
 144   }
 145
 146   return rc;
 147 }
 148
 149
 150 uint16_t CExynosCECAdapterCommunication::GetFirmwareVersion(void)
 151 {
 152   return 0;
 153 }
 154
 155
 156 cec_vendor_id CExynosCECAdapterCommunication::GetVendorId(void)
 157 {
 158   return cec_vendor_id(CEC_VENDOR_SAMSUNG);
 159 }
 160
 161
 162 uint16_t CExynosCECAdapterCommunication::GetPhysicalAddress(void)
 163 {
 164   uint16_t phys_addr = CEC_DEFAULT_PADDR;
 165
 166   FILE *f = fopen(CEC_PADDR_NAME, "r");
 167   if(f) {
 168     if(fscanf(f, "%hu", &phys_addr) != 1)
 169       phys_addr = CEC_DEFAULT_PADDR;
 170
 171     fclose(f);
 172   }
 173   return phys_addr;
 174 }
 175
 176
 177 cec_logical_addresses CExynosCECAdapterCommunication::GetLogicalAddresses(void)
 178 {
 179   return m_logicalAddresses;
 180 }
 181
 182
 183 bool CExynosCECAdapterCommunication::SetLogicalAddresses(const cec_logical_addresses &addresses)
 184 {
 185   unsigned int log_addr = addresses.primary;
 186   CLockObject lock(m_mutex);
 187
 188   if (!IsOpen())
 189     return false;
 190
 191   if (ioctl(m_fd, CEC_IOC_SETLADDR, &log_addr))
 192   {
 193     LIB_CEC->AddLog(CEC_LOG_ERROR, "%s: IOCTL SetLogicalAddr failed !", __func__);
 194     return false;
 195   }
 196   m_logicalAddresses = addresses;
 197   m_bLogicalAddressChanged = true;
 198
 199   return true;
 200 }
 201
 202
 203 void CExynosCECAdapterCommunication::HandleLogicalAddressLost(cec_logical_address UNUSED(oldAddress))
 204 {
 205   unsigned int log_addr = CECDEVICE_BROADCAST;
 206   if (ioctl(m_fd, CEC_IOC_SETLADDR, &log_addr))
 207   {
 208     LIB_CEC->AddLog(CEC_LOG_ERROR, "%s: IOCTL SetLogicalAddr failed !", __func__);
 209   }
 210 }
 211
 212
 213 void *CExynosCECAdapterCommunication::Process(void)
 214 {
 215   uint8_t buffer[CEC_MAX_FRAME_SIZE];
 216   uint32_t size;
 217   fd_set rfds;
 218   cec_logical_address initiator, destination;
 219
 220   if (!IsOpen())
 221     return 0;
 222
 223   FD_ZERO(&rfds);
 224   FD_SET(m_fd, &rfds);
 225
 226   while (!IsStopped())
 227   {
 228     if (select(m_fd + 1, &rfds, NULL, NULL, NULL) >= 0 )
 229     {
 230       size = read(m_fd, buffer, CEC_MAX_FRAME_SIZE);
 231
 232       if (size > 0)
 233       {
 234           initiator = cec_logical_address(buffer[0] >> 4);
 235           destination = cec_logical_address(buffer[0] & 0x0f);
 236
 237           cec_command cmd;
 238
 239           cec_command::Format(
 240             cmd, initiator, destination,
 241             ( size > 1 ) ? cec_opcode(buffer[1]) : CEC_OPCODE_NONE);
 242
 243           for( uint8_t i = 2; i < size; i++ )
 244             cmd.parameters.PushBack(buffer[i]);
 245
 246           if (!IsStopped())
 247             m_callback->OnCommandReceived(cmd);
 248       }
 249     }
 250
 251   }
 252
 253   return 0;
 254 }
 255
 256 #endif  // HAVE_EXYNOS_API