[deb_libcec.git] / src / lib / adapter / RPi / RPiCECAdapterCommunication.cpp

/*
 * This file is part of the libCEC(R) library.
 *
 * libCEC(R) is Copyright (C) 2011-2012 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 "env.h"

#if defined(HAVE_RPI_API)
#include "RPiCECAdapterCommunication.h"

extern "C" {
#include <bcm_host.h>
}

#include "lib/CECTypeUtils.h"
#include "lib/LibCEC.h"
#include "lib/platform/util/StdString.h"
#include "RPiCECAdapterMessageQueue.h"

using namespace CEC;
using namespace PLATFORM;

#define LIB_CEC m_callback->GetLib()

static bool g_bHostInited = false;

// callback for the RPi CEC service
void rpi_cec_callback(void *callback_data, uint32_t p0, uint32_t p1, uint32_t p2, uint32_t p3, uint32_t p4)
{
  if (callback_data)
    static_cast<CRPiCECAdapterCommunication *>(callback_data)->OnDataReceived(p0, p1, p2, p3, p4);
}

CRPiCECAdapterCommunication::CRPiCECAdapterCommunication(IAdapterCommunicationCallback *callback) :
    IAdapterCommunication(callback),
    m_logicalAddress(CECDEVICE_UNKNOWN),
    m_bLogicalAddressChanged(false),
    m_previousLogicalAddress(CECDEVICE_FREEUSE)
{
  m_queue = new CRPiCECAdapterMessageQueue(this);
}

CRPiCECAdapterCommunication::~CRPiCECAdapterCommunication(void)
{
  delete(m_queue);
  Close();
}

const char *ToString(const VC_CEC_ERROR_T error)
{
  switch(error)
  {
  case VC_CEC_SUCCESS:
    return "success";
  case VC_CEC_ERROR_NO_ACK:
    return "no ack";
  case VC_CEC_ERROR_SHUTDOWN:
    return "shutdown";
  case VC_CEC_ERROR_BUSY:
    return "device is busy";
  case VC_CEC_ERROR_NO_LA:
    return "no logical address";
  case VC_CEC_ERROR_NO_PA:
    return "no physical address";
  case VC_CEC_ERROR_NO_TOPO:
    return "no topology";
  case VC_CEC_ERROR_INVALID_FOLLOWER:
    return "invalid follower";
  case VC_CEC_ERROR_INVALID_ARGUMENT:
    return "invalid arg";
  default:
    return "unknown";
  }
}

bool CRPiCECAdapterCommunication::IsInitialised(void)
{
  CLockObject lock(m_mutex);
  return m_bInitialised;
}

void CRPiCECAdapterCommunication::OnDataReceived(uint32_t header, uint32_t p0, uint32_t p1, uint32_t p2, uint32_t p3)
{
  VC_CEC_NOTIFY_T reason = (VC_CEC_NOTIFY_T)CEC_CB_REASON(header);

#ifdef CEC_DEBUGGING
  LIB_CEC->AddLog(CEC_LOG_DEBUG, "received data: header:%08X p0:%08X p1:%08X p2:%08X p3:%08X reason:%x", header, p0, p1, p2, p3, reason);
#endif

  switch (reason)
  {
  case VC_CEC_RX:
    // CEC data received
    {
      // translate into a VC_CEC_MESSAGE_T
      VC_CEC_MESSAGE_T message;
      vc_cec_param2message(header, p0, p1, p2, p3, &message);

      // translate to a cec_command
      cec_command command;
      cec_command::Format(command,
          (cec_logical_address)message.initiator,
          (cec_logical_address)message.follower,
          (cec_opcode)CEC_CB_OPCODE(p0));

      // copy parameters
      for (uint8_t iPtr = 1; iPtr < message.length; iPtr++)
        command.PushBack(message.payload[iPtr]);

      // send to libCEC
      m_callback->OnCommandReceived(command);
    }
    break;
  case VC_CEC_TX:
    {
      // handle response to a command that was sent earlier
      m_queue->MessageReceived((cec_opcode)CEC_CB_OPCODE(p0), (cec_logical_address)CEC_CB_INITIATOR(p0), (cec_logical_address)CEC_CB_FOLLOWER(p0), CEC_CB_RC(header));
    }
    break;
  case VC_CEC_BUTTON_PRESSED:
  case VC_CEC_REMOTE_PRESSED:
    {
      // translate into a cec_command
      cec_command command;
      cec_command::Format(command,
                          (cec_logical_address)CEC_CB_INITIATOR(p0),
                          (cec_logical_address)CEC_CB_FOLLOWER(p0),
                          reason == VC_CEC_BUTTON_PRESSED ? CEC_OPCODE_USER_CONTROL_PRESSED : CEC_OPCODE_VENDOR_REMOTE_BUTTON_DOWN);
      command.parameters.PushBack((uint8_t)CEC_CB_OPERAND1(p0));

      // send to libCEC
      m_callback->OnCommandReceived(command);
    }
    break;
  case VC_CEC_BUTTON_RELEASE:
  case VC_CEC_REMOTE_RELEASE:
    {
      // translate into a cec_command
      cec_command command;
      cec_command::Format(command,
                          (cec_logical_address)CEC_CB_INITIATOR(p0),
                          (cec_logical_address)CEC_CB_FOLLOWER(p0),
                          reason == VC_CEC_BUTTON_PRESSED ? CEC_OPCODE_USER_CONTROL_RELEASE : CEC_OPCODE_VENDOR_REMOTE_BUTTON_UP);
      command.parameters.PushBack((uint8_t)CEC_CB_OPERAND1(p0));

      // send to libCEC
      m_callback->OnCommandReceived(command);
    }
    break;
  case VC_CEC_LOGICAL_ADDR:
    {
      CLockObject lock(m_mutex);
      m_previousLogicalAddress = m_logicalAddress;
      if (CEC_CB_RC(header) == VCHIQ_SUCCESS)
      {
        m_bLogicalAddressChanged = true;
        m_logicalAddress = (cec_logical_address)(p0 & 0xF);
        LIB_CEC->AddLog(CEC_LOG_DEBUG, "logical address changed to %s (%x)", LIB_CEC->ToString(m_logicalAddress), m_logicalAddress);
      }
      else
      {
        m_logicalAddress = CECDEVICE_FREEUSE;
        LIB_CEC->AddLog(CEC_LOG_DEBUG, "failed to change the logical address, reset to %s (%x)", LIB_CEC->ToString(m_logicalAddress), m_logicalAddress);
      }
      m_logicalAddressCondition.Signal();
    }
    break;
  case VC_CEC_LOGICAL_ADDR_LOST:
    {
      // the logical address was taken by another device
      cec_logical_address previousAddress = m_logicalAddress == CECDEVICE_BROADCAST ? m_previousLogicalAddress : m_logicalAddress;
      m_logicalAddress = CECDEVICE_UNKNOWN;

      // notify libCEC that we lost our LA when the connection was initialised
      if (m_bInitialised)
        m_callback->HandleLogicalAddressLost(previousAddress);
    }
    break;
  case VC_CEC_TOPOLOGY:
    break;
  default:
    LIB_CEC->AddLog(CEC_LOG_DEBUG, "ignoring unknown reason %x", reason);
    break;
  }
}

int CRPiCECAdapterCommunication::InitHostCEC(void)
{
  VCHIQ_INSTANCE_T vchiq_instance;
  int iResult;

  if ((iResult = vchiq_initialise(&vchiq_instance)) != VCHIQ_SUCCESS)
  {
    LIB_CEC->AddLog(CEC_LOG_ERROR, "%s - vchiq_initialise failed (%d)", __FUNCTION__, iResult);
    CStdString strError;
    strError.Format("%s - vchiq_initialise failed (%d)", __FUNCTION__, iResult);
    m_strError = strError;
    return iResult;
  }
  LIB_CEC->AddLog(CEC_LOG_DEBUG, "%s - vchiq_initialise succeeded", __FUNCTION__);

  if ((iResult = vchi_initialise(&m_vchi_instance)) != VCHIQ_SUCCESS)
  {
    LIB_CEC->AddLog(CEC_LOG_ERROR, "%s - vchi_initialise failed (%d)", __FUNCTION__, iResult);
    CStdString strError;
    strError.Format("%s - vchi_initialise failed (%d)", __FUNCTION__, iResult);
    m_strError = strError;
    return iResult;
  }
  LIB_CEC->AddLog(CEC_LOG_DEBUG, "%s - vchi_initialise succeeded", __FUNCTION__);

  vchiq_instance = (VCHIQ_INSTANCE_T)m_vchi_instance;

  m_vchi_connection = vchi_create_connection(single_get_func_table(),
      vchi_mphi_message_driver_func_table());

  if ((iResult = vchi_connect(&m_vchi_connection, 1, m_vchi_instance)) != VCHIQ_SUCCESS)
  {
    LIB_CEC->AddLog(CEC_LOG_ERROR, "%s - vchi_connect failed (%d)", __FUNCTION__, iResult);
    CStdString strError;
    strError.Format("%s - vchi_connect failed (%d)", __FUNCTION__, iResult);
    m_strError = strError;
    return iResult;
  }
  LIB_CEC->AddLog(CEC_LOG_DEBUG, "%s - vchi_connect succeeded", __FUNCTION__);

  return VCHIQ_SUCCESS;
}

bool CRPiCECAdapterCommunication::Open(uint32_t iTimeoutMs /* = CEC_DEFAULT_CONNECT_TIMEOUT */, bool UNUSED(bSkipChecks) /* = false */, bool bStartListening)
{
  Close();

  if (InitHostCEC() != VCHIQ_SUCCESS)
    return false;

  if (bStartListening)
  {
    // enable passive mode
    vc_cec_set_passive(true);

    // register the callback
    vc_cec_register_callback(((CECSERVICE_CALLBACK_T)rpi_cec_callback), (void*)this);

    // release previous LA
    vc_cec_release_logical_address();
    if (!m_logicalAddressCondition.Wait(m_mutex, m_bLogicalAddressChanged, iTimeoutMs))
    {
      LIB_CEC->AddLog(CEC_LOG_ERROR, "failed to release the previous LA");
      return false;
    }

    // register LA "freeuse"
    if (RegisterLogicalAddress(CECDEVICE_FREEUSE))
    {
      LIB_CEC->AddLog(CEC_LOG_DEBUG, "%s - vc_cec initialised", __FUNCTION__);
      CLockObject lock(m_mutex);
      m_bInitialised = true;
    }
    else
      LIB_CEC->AddLog(CEC_LOG_ERROR, "%s - vc_cec could not be initialised", __FUNCTION__);
  }

  return true;
}

uint16_t CRPiCECAdapterCommunication::GetPhysicalAddress(void)
{
  uint16_t iPA(CEC_INVALID_PHYSICAL_ADDRESS);
  if (!IsInitialised())
    return iPA;

  if (vc_cec_get_physical_address(&iPA) == VCHIQ_SUCCESS)
    LIB_CEC->AddLog(CEC_LOG_DEBUG, "%s - physical address = %04x", __FUNCTION__, iPA);
  else
  {
    LIB_CEC->AddLog(CEC_LOG_WARNING, "%s - failed to get the physical address", __FUNCTION__);
    iPA = CEC_INVALID_PHYSICAL_ADDRESS;
  }

  return iPA;
}

void CRPiCECAdapterCommunication::Close(void)
{
  {
    CLockObject lock(m_mutex);
    if (m_bInitialised)
      m_bInitialised = false;
    else
      return;
  }
  UnregisterLogicalAddress();

  // disable passive mode
  vc_cec_set_passive(false);

  if (!g_bHostInited)
  {
    g_bHostInited = false;
    bcm_host_deinit();
  }
}

std::string CRPiCECAdapterCommunication::GetError(void) const
{
  std::string strError(m_strError);
  return strError;
}

cec_adapter_message_state CRPiCECAdapterCommunication::Write(const cec_command &data, bool &UNUSED(bRetry), uint8_t UNUSED(iLineTimeout), bool bIsReply)
{
  // ensure that the source LA is registered
  if (!RegisterLogicalAddress(data.initiator))
  {
    LIB_CEC->AddLog(CEC_LOG_DEBUG, "failed to register logical address %s (%X)", CCECTypeUtils::ToString(data.initiator), data.initiator);
    return (data.initiator == data.destination) ? ADAPTER_MESSAGE_STATE_SENT_NOT_ACKED : ADAPTER_MESSAGE_STATE_ERROR;
  }

  if (!data.opcode_set && data.initiator == data.destination)
  {
    // registration of the logical address would have failed
    return ADAPTER_MESSAGE_STATE_SENT_NOT_ACKED;
  }

  return m_queue->Write(data, bIsReply) ? ADAPTER_MESSAGE_STATE_SENT_ACKED : ADAPTER_MESSAGE_STATE_SENT_NOT_ACKED;
}

uint16_t CRPiCECAdapterCommunication::GetFirmwareVersion(void)
{
  return VC_CECSERVICE_VER;
}

cec_logical_address CRPiCECAdapterCommunication::GetLogicalAddress(void)
{
  {
    CLockObject lock(m_mutex);
    if (m_logicalAddress != CECDEVICE_UNKNOWN)
      return m_logicalAddress;
  }

  CEC_AllDevices_T address;
  return (vc_cec_get_logical_address(&address) == VCHIQ_SUCCESS) ?
      (cec_logical_address)address : CECDEVICE_UNKNOWN;
}

bool CRPiCECAdapterCommunication::UnregisterLogicalAddress(void)
{
  CLockObject lock(m_mutex);
  if (m_logicalAddress == CECDEVICE_UNKNOWN ||
      m_logicalAddress == CECDEVICE_BROADCAST)
    return true;

  LIB_CEC->AddLog(CEC_LOG_DEBUG, "%s - releasing previous logical address", __FUNCTION__);
  m_bLogicalAddressChanged = false;

  vc_cec_release_logical_address();

  return m_logicalAddressCondition.Wait(m_mutex, m_bLogicalAddressChanged);
}

bool CRPiCECAdapterCommunication::RegisterLogicalAddress(const cec_logical_address address)
{
  {
    CLockObject lock(m_mutex);
    if (m_logicalAddress == address)
      return true;
  }

  if (!UnregisterLogicalAddress())
    return false;

  LIB_CEC->AddLog(CEC_LOG_DEBUG, "%s - registering address %x", __FUNCTION__, address);

  CLockObject lock(m_mutex);
  m_bLogicalAddressChanged = false;
  vc_cec_poll_address((CEC_AllDevices_T)address);

  // register the new LA
  int iRetval = vc_cec_set_logical_address((CEC_AllDevices_T)address, (CEC_DEVICE_TYPE_T)CCECTypeUtils::GetType(address), CEC_VENDOR_ID_BROADCOM);
  if (iRetval != VCHIQ_SUCCESS)
  {
    LIB_CEC->AddLog(CEC_LOG_ERROR, "%s - vc_cec_set_logical_address(%X) returned %s (%d)", __FUNCTION__, address, ToString((VC_CEC_ERROR_T)iRetval), iRetval);
    return false;
  }

  return m_logicalAddressCondition.Wait(m_mutex, m_bLogicalAddressChanged);
}

cec_logical_addresses CRPiCECAdapterCommunication::GetLogicalAddresses(void)
{
  cec_logical_addresses addresses; addresses.Clear();
  cec_logical_address current = GetLogicalAddress();
  if (current != CECDEVICE_UNKNOWN)
    addresses.Set(current);

  return addresses;
}

bool CRPiCECAdapterCommunication::SetLogicalAddresses(const cec_logical_addresses &addresses)
{
  // the current generation RPi only supports 1 LA, so just ensure that the primary address is registered
  return SupportsSourceLogicalAddress(addresses.primary) &&
      RegisterLogicalAddress(addresses.primary);
}

void CRPiCECAdapterCommunication::InitHost(void)
{
  if (!g_bHostInited)
  {
    g_bHostInited = true;
    bcm_host_init();
  }
}

#endif
Commit	Line	Data
	1	/*
	2	* This file is part of the libCEC(R) library.
	3	*
	4	* libCEC(R) is Copyright (C) 2011-2012 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 "env.h"
	34
	35	#if defined(HAVE_RPI_API)
	36	#include "RPiCECAdapterCommunication.h"
	37
	38	extern "C" {
	39	#include <bcm_host.h>
	40	}
	41
	42	#include "lib/CECTypeUtils.h"
	43	#include "lib/LibCEC.h"
	44	#include "lib/platform/util/StdString.h"
	45	#include "RPiCECAdapterMessageQueue.h"
	46
	47	using namespace CEC;
	48	using namespace PLATFORM;
	49
	50	#define LIB_CEC m_callback->GetLib()
	51
	52	static bool g_bHostInited = false;
	53
	54	// callback for the RPi CEC service
	55	void rpi_cec_callback(void *callback_data, uint32_t p0, uint32_t p1, uint32_t p2, uint32_t p3, uint32_t p4)
	56	{
	57	if (callback_data)
	58	static_cast<CRPiCECAdapterCommunication *>(callback_data)->OnDataReceived(p0, p1, p2, p3, p4);
	59	}
	60
	61	CRPiCECAdapterCommunication::CRPiCECAdapterCommunication(IAdapterCommunicationCallback *callback) :
	62	IAdapterCommunication(callback),
	63	m_logicalAddress(CECDEVICE_UNKNOWN),
	64	m_bLogicalAddressChanged(false),
	65	m_previousLogicalAddress(CECDEVICE_FREEUSE)
	66	{
	67	m_queue = new CRPiCECAdapterMessageQueue(this);
	68	}
	69
	70	CRPiCECAdapterCommunication::~CRPiCECAdapterCommunication(void)
	71	{
	72	delete(m_queue);
	73	Close();
	74	}
	75
	76	const char *ToString(const VC_CEC_ERROR_T error)
	77	{
	78	switch(error)
	79	{
	80	case VC_CEC_SUCCESS:
	81	return "success";
	82	case VC_CEC_ERROR_NO_ACK:
	83	return "no ack";
	84	case VC_CEC_ERROR_SHUTDOWN:
	85	return "shutdown";
	86	case VC_CEC_ERROR_BUSY:
	87	return "device is busy";
	88	case VC_CEC_ERROR_NO_LA:
	89	return "no logical address";
	90	case VC_CEC_ERROR_NO_PA:
	91	return "no physical address";
	92	case VC_CEC_ERROR_NO_TOPO:
	93	return "no topology";
	94	case VC_CEC_ERROR_INVALID_FOLLOWER:
	95	return "invalid follower";
	96	case VC_CEC_ERROR_INVALID_ARGUMENT:
	97	return "invalid arg";
	98	default:
	99	return "unknown";
	100	}
	101	}
	102
	103	bool CRPiCECAdapterCommunication::IsInitialised(void)
	104	{
	105	CLockObject lock(m_mutex);
	106	return m_bInitialised;
	107	}
	108
	109	void CRPiCECAdapterCommunication::OnDataReceived(uint32_t header, uint32_t p0, uint32_t p1, uint32_t p2, uint32_t p3)
	110	{
	111	VC_CEC_NOTIFY_T reason = (VC_CEC_NOTIFY_T)CEC_CB_REASON(header);
	112
	113	#ifdef CEC_DEBUGGING
	114	LIB_CEC->AddLog(CEC_LOG_DEBUG, "received data: header:%08X p0:%08X p1:%08X p2:%08X p3:%08X reason:%x", header, p0, p1, p2, p3, reason);
	115	#endif
	116
	117	switch (reason)
	118	{
	119	case VC_CEC_RX:
	120	// CEC data received
	121	{
	122	// translate into a VC_CEC_MESSAGE_T
	123	VC_CEC_MESSAGE_T message;
	124	vc_cec_param2message(header, p0, p1, p2, p3, &message);
	125
	126	// translate to a cec_command
	127	cec_command command;
	128	cec_command::Format(command,
	129	(cec_logical_address)message.initiator,
	130	(cec_logical_address)message.follower,
	131	(cec_opcode)CEC_CB_OPCODE(p0));
	132
	133	// copy parameters
	134	for (uint8_t iPtr = 1; iPtr < message.length; iPtr++)
	135	command.PushBack(message.payload[iPtr]);
	136
	137	// send to libCEC
	138	m_callback->OnCommandReceived(command);
	139	}
	140	break;
	141	case VC_CEC_TX:
	142	{
	143	// handle response to a command that was sent earlier
	144	m_queue->MessageReceived((cec_opcode)CEC_CB_OPCODE(p0), (cec_logical_address)CEC_CB_INITIATOR(p0), (cec_logical_address)CEC_CB_FOLLOWER(p0), CEC_CB_RC(header));
	145	}
	146	break;
	147	case VC_CEC_BUTTON_PRESSED:
	148	case VC_CEC_REMOTE_PRESSED:
	149	{
	150	// translate into a cec_command
	151	cec_command command;
	152	cec_command::Format(command,
	153	(cec_logical_address)CEC_CB_INITIATOR(p0),
	154	(cec_logical_address)CEC_CB_FOLLOWER(p0),
	155	reason == VC_CEC_BUTTON_PRESSED ? CEC_OPCODE_USER_CONTROL_PRESSED : CEC_OPCODE_VENDOR_REMOTE_BUTTON_DOWN);
	156	command.parameters.PushBack((uint8_t)CEC_CB_OPERAND1(p0));
	157
	158	// send to libCEC
	159	m_callback->OnCommandReceived(command);
	160	}
	161	break;
	162	case VC_CEC_BUTTON_RELEASE:
	163	case VC_CEC_REMOTE_RELEASE:
	164	{
	165	// translate into a cec_command
	166	cec_command command;
	167	cec_command::Format(command,
	168	(cec_logical_address)CEC_CB_INITIATOR(p0),
	169	(cec_logical_address)CEC_CB_FOLLOWER(p0),
	170	reason == VC_CEC_BUTTON_PRESSED ? CEC_OPCODE_USER_CONTROL_RELEASE : CEC_OPCODE_VENDOR_REMOTE_BUTTON_UP);
	171	command.parameters.PushBack((uint8_t)CEC_CB_OPERAND1(p0));
	172
	173	// send to libCEC
	174	m_callback->OnCommandReceived(command);
	175	}
	176	break;
	177	case VC_CEC_LOGICAL_ADDR:
	178	{
	179	CLockObject lock(m_mutex);
	180	m_previousLogicalAddress = m_logicalAddress;
	181	if (CEC_CB_RC(header) == VCHIQ_SUCCESS)
	182	{
	183	m_bLogicalAddressChanged = true;
	184	m_logicalAddress = (cec_logical_address)(p0 & 0xF);
	185	LIB_CEC->AddLog(CEC_LOG_DEBUG, "logical address changed to %s (%x)", LIB_CEC->ToString(m_logicalAddress), m_logicalAddress);
	186	}
	187	else
	188	{
	189	m_logicalAddress = CECDEVICE_FREEUSE;
	190	LIB_CEC->AddLog(CEC_LOG_DEBUG, "failed to change the logical address, reset to %s (%x)", LIB_CEC->ToString(m_logicalAddress), m_logicalAddress);
	191	}
	192	m_logicalAddressCondition.Signal();
	193	}
	194	break;
	195	case VC_CEC_LOGICAL_ADDR_LOST:
	196	{
	197	// the logical address was taken by another device
	198	cec_logical_address previousAddress = m_logicalAddress == CECDEVICE_BROADCAST ? m_previousLogicalAddress : m_logicalAddress;
	199	m_logicalAddress = CECDEVICE_UNKNOWN;
	200
	201	// notify libCEC that we lost our LA when the connection was initialised
	202	if (m_bInitialised)
	203	m_callback->HandleLogicalAddressLost(previousAddress);
	204	}
	205	break;
	206	case VC_CEC_TOPOLOGY:
	207	break;
	208	default:
	209	LIB_CEC->AddLog(CEC_LOG_DEBUG, "ignoring unknown reason %x", reason);
	210	break;
	211	}
	212	}
	213
	214	int CRPiCECAdapterCommunication::InitHostCEC(void)
	215	{
	216	VCHIQ_INSTANCE_T vchiq_instance;
	217	int iResult;
	218
	219	if ((iResult = vchiq_initialise(&vchiq_instance)) != VCHIQ_SUCCESS)
	220	{
	221	LIB_CEC->AddLog(CEC_LOG_ERROR, "%s - vchiq_initialise failed (%d)", __FUNCTION__, iResult);
	222	CStdString strError;
	223	strError.Format("%s - vchiq_initialise failed (%d)", __FUNCTION__, iResult);
	224	m_strError = strError;
	225	return iResult;
	226	}
	227	LIB_CEC->AddLog(CEC_LOG_DEBUG, "%s - vchiq_initialise succeeded", __FUNCTION__);
	228
	229	if ((iResult = vchi_initialise(&m_vchi_instance)) != VCHIQ_SUCCESS)
	230	{
	231	LIB_CEC->AddLog(CEC_LOG_ERROR, "%s - vchi_initialise failed (%d)", __FUNCTION__, iResult);
	232	CStdString strError;
	233	strError.Format("%s - vchi_initialise failed (%d)", __FUNCTION__, iResult);
	234	m_strError = strError;
	235	return iResult;
	236	}
	237	LIB_CEC->AddLog(CEC_LOG_DEBUG, "%s - vchi_initialise succeeded", __FUNCTION__);
	238
	239	vchiq_instance = (VCHIQ_INSTANCE_T)m_vchi_instance;
	240
	241	m_vchi_connection = vchi_create_connection(single_get_func_table(),
	242	vchi_mphi_message_driver_func_table());
	243
	244	if ((iResult = vchi_connect(&m_vchi_connection, 1, m_vchi_instance)) != VCHIQ_SUCCESS)
	245	{
	246	LIB_CEC->AddLog(CEC_LOG_ERROR, "%s - vchi_connect failed (%d)", __FUNCTION__, iResult);
	247	CStdString strError;
	248	strError.Format("%s - vchi_connect failed (%d)", __FUNCTION__, iResult);
	249	m_strError = strError;
	250	return iResult;
	251	}
	252	LIB_CEC->AddLog(CEC_LOG_DEBUG, "%s - vchi_connect succeeded", __FUNCTION__);
	253
	254	return VCHIQ_SUCCESS;
	255	}
	256
	257	bool CRPiCECAdapterCommunication::Open(uint32_t iTimeoutMs /* = CEC_DEFAULT_CONNECT_TIMEOUT /, bool UNUSED(bSkipChecks) / = false */, bool bStartListening)
	258	{
	259	Close();
	260
	261	if (InitHostCEC() != VCHIQ_SUCCESS)
	262	return false;
	263
	264	if (bStartListening)
	265	{
	266	// enable passive mode
	267	vc_cec_set_passive(true);
	268
	269	// register the callback
	270	vc_cec_register_callback(((CECSERVICE_CALLBACK_T)rpi_cec_callback), (void*)this);
	271
	272	// release previous LA
	273	vc_cec_release_logical_address();
	274	if (!m_logicalAddressCondition.Wait(m_mutex, m_bLogicalAddressChanged, iTimeoutMs))
	275	{
	276	LIB_CEC->AddLog(CEC_LOG_ERROR, "failed to release the previous LA");
	277	return false;
	278	}
	279
	280	// register LA "freeuse"
	281	if (RegisterLogicalAddress(CECDEVICE_FREEUSE))
	282	{
	283	LIB_CEC->AddLog(CEC_LOG_DEBUG, "%s - vc_cec initialised", __FUNCTION__);
	284	CLockObject lock(m_mutex);
	285	m_bInitialised = true;
	286	}
	287	else
	288	LIB_CEC->AddLog(CEC_LOG_ERROR, "%s - vc_cec could not be initialised", __FUNCTION__);
	289	}
	290
	291	return true;
	292	}
	293
	294	uint16_t CRPiCECAdapterCommunication::GetPhysicalAddress(void)
	295	{
	296	uint16_t iPA(CEC_INVALID_PHYSICAL_ADDRESS);
	297	if (!IsInitialised())
	298	return iPA;
	299
	300	if (vc_cec_get_physical_address(&iPA) == VCHIQ_SUCCESS)
	301	LIB_CEC->AddLog(CEC_LOG_DEBUG, "%s - physical address = %04x", __FUNCTION__, iPA);
	302	else
	303	{
	304	LIB_CEC->AddLog(CEC_LOG_WARNING, "%s - failed to get the physical address", __FUNCTION__);
	305	iPA = CEC_INVALID_PHYSICAL_ADDRESS;
	306	}
	307
	308	return iPA;
	309	}
	310
	311	void CRPiCECAdapterCommunication::Close(void)
	312	{
	313	{
	314	CLockObject lock(m_mutex);
	315	if (m_bInitialised)
	316	m_bInitialised = false;
	317	else
	318	return;
	319	}
	320	UnregisterLogicalAddress();
	321
	322	// disable passive mode
	323	vc_cec_set_passive(false);
	324
	325	if (!g_bHostInited)
	326	{
	327	g_bHostInited = false;
	328	bcm_host_deinit();
	329	}
	330	}
	331
	332	std::string CRPiCECAdapterCommunication::GetError(void) const
	333	{
	334	std::string strError(m_strError);
	335	return strError;
	336	}
	337
	338	cec_adapter_message_state CRPiCECAdapterCommunication::Write(const cec_command &data, bool &UNUSED(bRetry), uint8_t UNUSED(iLineTimeout), bool bIsReply)
	339	{
	340	// ensure that the source LA is registered
	341	if (!RegisterLogicalAddress(data.initiator))
	342	{
	343	LIB_CEC->AddLog(CEC_LOG_DEBUG, "failed to register logical address %s (%X)", CCECTypeUtils::ToString(data.initiator), data.initiator);
	344	return (data.initiator == data.destination) ? ADAPTER_MESSAGE_STATE_SENT_NOT_ACKED : ADAPTER_MESSAGE_STATE_ERROR;
	345	}
	346
	347	if (!data.opcode_set && data.initiator == data.destination)
	348	{
	349	// registration of the logical address would have failed
	350	return ADAPTER_MESSAGE_STATE_SENT_NOT_ACKED;
	351	}
	352
	353	return m_queue->Write(data, bIsReply) ? ADAPTER_MESSAGE_STATE_SENT_ACKED : ADAPTER_MESSAGE_STATE_SENT_NOT_ACKED;
	354	}
	355
	356	uint16_t CRPiCECAdapterCommunication::GetFirmwareVersion(void)
	357	{
	358	return VC_CECSERVICE_VER;
	359	}
	360
	361	cec_logical_address CRPiCECAdapterCommunication::GetLogicalAddress(void)
	362	{
	363	{
	364	CLockObject lock(m_mutex);
	365	if (m_logicalAddress != CECDEVICE_UNKNOWN)
	366	return m_logicalAddress;
	367	}
	368
	369	CEC_AllDevices_T address;
	370	return (vc_cec_get_logical_address(&address) == VCHIQ_SUCCESS) ?
	371	(cec_logical_address)address : CECDEVICE_UNKNOWN;
	372	}
	373
	374	bool CRPiCECAdapterCommunication::UnregisterLogicalAddress(void)
	375	{
	376	CLockObject lock(m_mutex);
	377	if (m_logicalAddress == CECDEVICE_UNKNOWN \|\|
	378	m_logicalAddress == CECDEVICE_BROADCAST)
	379	return true;
	380
	381	LIB_CEC->AddLog(CEC_LOG_DEBUG, "%s - releasing previous logical address", __FUNCTION__);
	382	m_bLogicalAddressChanged = false;
	383
	384	vc_cec_release_logical_address();
	385
	386	return m_logicalAddressCondition.Wait(m_mutex, m_bLogicalAddressChanged);
	387	}
	388
	389	bool CRPiCECAdapterCommunication::RegisterLogicalAddress(const cec_logical_address address)
	390	{
	391	{
	392	CLockObject lock(m_mutex);
	393	if (m_logicalAddress == address)
	394	return true;
	395	}
	396
	397	if (!UnregisterLogicalAddress())
	398	return false;
	399
	400	LIB_CEC->AddLog(CEC_LOG_DEBUG, "%s - registering address %x", __FUNCTION__, address);
	401
	402	CLockObject lock(m_mutex);
	403	m_bLogicalAddressChanged = false;
	404	vc_cec_poll_address((CEC_AllDevices_T)address);
	405
	406	// register the new LA
	407	int iRetval = vc_cec_set_logical_address((CEC_AllDevices_T)address, (CEC_DEVICE_TYPE_T)CCECTypeUtils::GetType(address), CEC_VENDOR_ID_BROADCOM);
	408	if (iRetval != VCHIQ_SUCCESS)
	409	{
	410	LIB_CEC->AddLog(CEC_LOG_ERROR, "%s - vc_cec_set_logical_address(%X) returned %s (%d)", __FUNCTION__, address, ToString((VC_CEC_ERROR_T)iRetval), iRetval);
	411	return false;
	412	}
	413
	414	return m_logicalAddressCondition.Wait(m_mutex, m_bLogicalAddressChanged);
	415	}
	416
	417	cec_logical_addresses CRPiCECAdapterCommunication::GetLogicalAddresses(void)
	418	{
	419	cec_logical_addresses addresses; addresses.Clear();
	420	cec_logical_address current = GetLogicalAddress();
	421	if (current != CECDEVICE_UNKNOWN)
	422	addresses.Set(current);
	423
	424	return addresses;
	425	}
	426
	427	bool CRPiCECAdapterCommunication::SetLogicalAddresses(const cec_logical_addresses &addresses)
	428	{
	429	// the current generation RPi only supports 1 LA, so just ensure that the primary address is registered
	430	return SupportsSourceLogicalAddress(addresses.primary) &&
	431	RegisterLogicalAddress(addresses.primary);
	432	}
	433
	434	void CRPiCECAdapterCommunication::InitHost(void)
	435	{
	436	if (!g_bHostInited)
	437	{
	438	g_bHostInited = true;
	439	bcm_host_init();
	440	}
	441	}
	442
	443	#endif