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/*
* Oreka -- A media capture and retrieval platform
*
* Copyright (C) 2005, orecx LLC
*
* http://www.orecx.com
*
* This program is free software, distributed under the terms of
* the GNU General Public License.
* Please refer to http://www.gnu.org/copyleft/gpl.html
*
*/
#include "CapturePluginProxy.h"
#include "ace/OS_NS_dirent.h"
#include "ace/OS_NS_string.h"
#include "ace/Thread_Manager.h"
#include "ConfigManager.h"
#include "CapturePort.h"
CapturePluginProxy* CapturePluginProxy::m_singleton;
CapturePluginProxy::CapturePluginProxy()
{
m_configureFunction = NULL;
m_registerCallBacksFunction = NULL;
m_initializeFunction = NULL;
m_runFunction = NULL;
m_startCaptureFunction = NULL;
m_stopCaptureFunction = NULL;
m_loaded = false;
}
CapturePluginProxy* CapturePluginProxy::Singleton()
{
return m_singleton;
}
bool CapturePluginProxy::Initialize()
{
m_singleton = new CapturePluginProxy();
return m_singleton->Init();
}
bool CapturePluginProxy::Init()
{
// Get the desired capture plugin from the config file, or else, use the first dll encountered.
CStdString pluginDirectory = CONFIG.m_capturePluginPath + "/";
CStdString pluginPath;
if (!CONFIG.m_capturePlugin.IsEmpty())
{
// A specific plugin was specified in the config file
pluginPath = pluginDirectory + CONFIG.m_capturePlugin;
}
else
{
// No plugin specified, find the first one in the plugin directory
ACE_DIR* dir = ACE_OS::opendir((PCSTR)pluginDirectory);
if (!dir)
{
LOG4CXX_ERROR(LOG.rootLog, CStdString("Capture plugin directory could not be found:" + pluginDirectory));
}
else
{
dirent* dirEntry = NULL;
bool found = false;
bool done = false;
while(!found && !done)
{
dirEntry = ACE_OS::readdir(dir);
if(dirEntry)
{
if (ACE_OS::strstr(dirEntry->d_name, ".dll"))
{
found = true;
done = true;
pluginPath = pluginDirectory + dirEntry->d_name;
}
}
else
{
done = true;
}
}
ACE_OS::closedir(dir);
}
}
if (!pluginPath.IsEmpty())
{
m_dll.open((PCSTR)pluginPath);
ACE_TCHAR* error = m_dll.error();
#ifndef WIN32
char *errorstr;
#endif
if(error)
{
#ifndef WIN32
errorstr = dlerror();
CStdString errorcstds(errorstr);
LOG4CXX_ERROR(LOG.rootLog, CStdString("Failed to load the following plugin: ") + pluginPath + " " + errorcstds);
#else
LOG4CXX_ERROR(LOG.rootLog, CStdString("Failed to load the following plugin: ") + pluginPath);
#endif
}
else
{
// Ok, the dll has been successfully loaded
LOG4CXX_INFO(LOG.rootLog, CStdString("Loaded plugin: ") + pluginPath);
RegisterCallBacksFunction registerCallBacks;
registerCallBacks = (RegisterCallBacksFunction)m_dll.symbol("RegisterCallBacks");
registerCallBacks(AudioChunkCallBack, CaptureEventCallBack, OrkLogManager::Instance());
m_configureFunction = (ConfigureFunction)m_dll.symbol("Configure");
if (m_configureFunction)
{
ConfigManager::Instance()->AddConfigureFunction(m_configureFunction);
m_initializeFunction = (InitializeFunction)m_dll.symbol("Initialize");
if (m_initializeFunction)
{
m_initializeFunction();
m_runFunction = (RunFunction)m_dll.symbol("Run");
if (m_runFunction)
{
m_startCaptureFunction = (StartCaptureFunction)m_dll.symbol("StartCapture");
if (m_startCaptureFunction)
{
m_stopCaptureFunction = (StopCaptureFunction)m_dll.symbol("StopCapture");
if (m_stopCaptureFunction)
{
m_pauseCaptureFunction = (PauseCaptureFunction)m_dll.symbol("PauseCapture");
if(m_pauseCaptureFunction)
{
m_setOnHoldFunction = (SetOnHoldFunction)m_dll.symbol("SetOnHold");
if(m_setOnHoldFunction)
{
m_setOffHoldFunction = (SetOnHoldFunction)m_dll.symbol("SetOffHold");
if(m_setOffHoldFunction)
{
m_loaded = true;
}
else
{
LOG4CXX_ERROR(LOG.rootLog, CStdString("Could not find SetOffHold function in ") + pluginPath);
}
}
else
{
LOG4CXX_ERROR(LOG.rootLog, CStdString("Could not find SetOnHold function in ") + pluginPath);
}
}
else
{
LOG4CXX_ERROR(LOG.rootLog, CStdString("Could not find PauseCapture function in ") + pluginPath);
}
}
else
{
LOG4CXX_ERROR(LOG.rootLog, CStdString("Could not find StopCapture function in ") + pluginPath);
}
}
else
{
LOG4CXX_ERROR(LOG.rootLog, CStdString("Could not find StartCapture function in ") + pluginPath);
}
}
else
{
LOG4CXX_ERROR(LOG.rootLog, CStdString("Could not find Run function in ") + pluginPath);
}
}
else
{
LOG4CXX_ERROR(LOG.rootLog, CStdString("Could not find Initialize function in ") + pluginPath);
}
}
else
{
LOG4CXX_ERROR(LOG.rootLog, CStdString("Could not find Configure function in ") + pluginPath);
}
}
}
else
{
LOG4CXX_ERROR(LOG.rootLog, CStdString("Failed to find any capture plugin in: ") + pluginDirectory);
}
return m_loaded;
}
void CapturePluginProxy::Run()
{
if (!ACE_Thread_Manager::instance()->spawn(ACE_THR_FUNC(m_runFunction)))
{
LOG4CXX_INFO(LOG.rootLog, CStdString("Failed to create capture thread"));
}
}
void CapturePluginProxy::Shutdown()
{
ShutdownFunction shutdownFunction = (ShutdownFunction)m_dll.symbol("Shutdown");
if (shutdownFunction)
{
LOG4CXX_INFO(LOG.rootLog, CStdString("Shutting down"));
shutdownFunction();
}
else
{
LOG4CXX_INFO(LOG.rootLog, CStdString("Could not find DLL Shutdown function"));
}
}
void CapturePluginProxy::StartCapture(CStdString& party, CStdString& orkuid)
{
if(m_loaded)
{
m_startCaptureFunction(party, orkuid);
}
else
{
throw(CStdString("StartCapture: Capture plugin not yet loaded"));
}
}
void CapturePluginProxy::StopCapture(CStdString& party)
{
if(m_loaded)
{
m_stopCaptureFunction(party);
}
else
{
throw(CStdString("StopCapture: Capture plugin not yet loaded"));
}
}
void CapturePluginProxy::PauseCapture(CStdString& party, CStdString& orkuid)
{
if(m_loaded)
{
m_pauseCaptureFunction(party, orkuid);
}
else
{
throw(CStdString("PauseCapture: Capture plugin not yet loaded"));
}
}
void __CDECL__ CapturePluginProxy::AudioChunkCallBack(AudioChunkRef chunkRef, CStdString& capturePort)
{
// find the right port and give it the audio chunk
CapturePortRef portRef = CapturePortsSingleton::instance()->AddAndReturnPort(capturePort);
portRef->AddAudioChunk(chunkRef);
}
void __CDECL__ CapturePluginProxy::CaptureEventCallBack(CaptureEventRef eventRef, CStdString& capturePort)
{
if(CONFIG.m_vad || CONFIG.m_audioSegmentation)
{
if (eventRef->m_type == CaptureEvent::EtStart || eventRef->m_type == CaptureEvent::EtStop)
{
if(CONFIG.m_audioSegmentation == true)
{
// find the right port and give it the event
// If this is EtStop, we clear the event cache
CapturePortRef portRef = CapturePortsSingleton::instance()->AddAndReturnPort(capturePort);
if(eventRef->m_type == CaptureEvent::EtStop)
{
portRef->ClearEventQueue();
}
portRef->AddCaptureEvent(eventRef);
}
else
{
LOG4CXX_ERROR(LOG.portLog, "#" + capturePort + ": received start or stop while in VAD mode");
}
}
else
{
if(CONFIG.m_audioSegmentation == true)
{
// find the right port and give it the event
CapturePortRef portRef = CapturePortsSingleton::instance()->AddAndReturnPort(capturePort);
portRef->QueueCaptureEvent(eventRef);
portRef->AddCaptureEvent(eventRef);
}
}
}
else
{
// find the right port and give it the event
CapturePortRef portRef = CapturePortsSingleton::instance()->AddAndReturnPort(capturePort);
portRef->AddCaptureEvent(eventRef);
}
}
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