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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
*
*/
#define _WINSOCKAPI_ // prevents the inclusion of winsock.h
#include "CapturePort.h"
#include "Utils.h"
#include "ImmediateProcessing.h"
#include "LogManager.h"
#include "Reporting.h"
#include "ConfigManager.h"
CapturePort::CapturePort(CStdString& Id)
{
m_Id = Id;
m_vadBelowThresholdSec = 0.0;
m_vadUp = false;
m_capturing = false;
}
CStdString CapturePort::ToString()
{
CStdString ret;
return ret;
}
void CapturePort::AddAudioChunk(AudioChunkRef chunkRef)
{
time_t now = time(NULL);
if(CONFIG.m_audioSegmentation)
{
if (m_audioTapeRef.get())
{
if ((now - m_audioTapeRef->m_beginDate) >= CONFIG.m_audioSegmentDuration)
{
// signal current tape stop event
CaptureEventRef eventRef(new CaptureEvent);
eventRef->m_type = CaptureEvent::EtStop;
eventRef->m_timestamp = now;
AddCaptureEvent(eventRef);
// create new tape
m_audioTapeRef.reset(new AudioTape(m_Id));
// signal new tape start event
eventRef.reset(new CaptureEvent);
eventRef->m_type = CaptureEvent::EtStart;
eventRef->m_timestamp = now;
AddCaptureEvent(eventRef);
}
}
else
{
// create new tape
m_audioTapeRef.reset(new AudioTape(m_Id));
// signal new tape start event
CaptureEventRef eventRef(new CaptureEvent);
eventRef->m_type = CaptureEvent::EtStart;
eventRef->m_timestamp = now;
AddCaptureEvent(eventRef);
}
}
else if (CONFIG.m_vad)
{
if(chunkRef->GetEncoding() == PcmAudio)
{
if(m_vadUp)
{
// There is an ongoing capture
if (chunkRef->ComputeRmsDb() < CONFIG.m_vadLowThresholdDb)
{
// Level has gone below low threshold, increase holdon counter
m_vadBelowThresholdSec += chunkRef->GetDurationSec();
}
else
{
// Level has gone above low threshold, reset holdon counter
m_vadBelowThresholdSec = 0.0;
}
if (m_vadBelowThresholdSec > CONFIG.m_vadHoldOnSec)
{
// no activity detected for more than hold on time
m_vadUp = false;
// signal current tape stop event
CaptureEventRef eventRef(new CaptureEvent);
eventRef->m_type = CaptureEvent::EtStop;
eventRef->m_timestamp = now;
AddCaptureEvent(eventRef);
}
}
else
{
// No capture is taking place yet
if (chunkRef->ComputeRmsDb() > CONFIG.m_vadHighThresholdDb)
{
// Voice detected, start a new capture
m_vadBelowThresholdSec = 0.0;
m_vadUp = true;
// create new tape
m_audioTapeRef.reset(new AudioTape(m_Id));
// signal new tape start event
CaptureEventRef eventRef(new CaptureEvent);
eventRef->m_type = CaptureEvent::EtStart;
eventRef->m_timestamp = now;
AddCaptureEvent(eventRef);
}
}
}
else
{
LOG4CXX_ERROR(LOG.portLog, CStdString("Voice activity detection cannot be used on non PCM audio"));
}
}
if (m_audioTapeRef.get() && m_capturing)
{
m_audioTapeRef->AddAudioChunk(chunkRef);
// Signal to immediate processing thread that tape has new stuff
ImmediateProcessing::GetInstance()->AddAudioTape(m_audioTapeRef);
}
}
void CapturePort::AddCaptureEvent(CaptureEventRef eventRef)
{
AudioTapeRef audioTapeRef = m_audioTapeRef;
// First of all, handle tape start
if (eventRef->m_type == CaptureEvent::EtStart)
{
m_capturing = true;
if (audioTapeRef.get())
{
audioTapeRef->SetShouldStop(); // force stop of previous tape
}
audioTapeRef.reset(new AudioTape(m_Id)); // Create a new tape
audioTapeRef->AddCaptureEvent(eventRef, false);
//Reporting::GetInstance()->AddAudioTape(audioTapeRef);
m_audioTapeRef = audioTapeRef;
LOG4CXX_INFO(LOG.portLog, "#" + m_Id + ": start");
}
if (!audioTapeRef.get())
{
LOG4CXX_WARN(LOG.portLog, "#" + m_Id + ": received unexpected capture event:"
+ CaptureEvent::EventTypeToString(eventRef->m_type));
}
else
{
// Ok, at this point, we know we have a valid audio tape
switch(eventRef->m_type)
{
case CaptureEvent::EtStop:
m_capturing = false;
LOG4CXX_INFO(LOG.portLog, "#" + m_Id + ": stop");
audioTapeRef->AddCaptureEvent(eventRef, true);
if (m_audioTapeRef->GetAudioFileRef().get())
{
// Notify immediate processing that tape has stopped
ImmediateProcessing::GetInstance()->AddAudioTape(m_audioTapeRef);
// Reporting needs to send a stop message
Reporting::GetInstance()->AddAudioTape(audioTapeRef);
}
else
{
// Received a stop but there is no valid audio file associated with the tape
LOG4CXX_WARN(LOG.portLog, "#" + m_Id + ": no audio reported between last start and stop");
}
break;
case CaptureEvent::EtDirection:
case CaptureEvent::EtRemoteParty:
case CaptureEvent::EtLocalParty:
case CaptureEvent::EtLocalEntryPoint:
default:
audioTapeRef->AddCaptureEvent(eventRef, false);
}
}
}
//=======================================
void CapturePorts::Initialize()
{
m_ports.clear();
}
CapturePortRef CapturePorts::GetPort(CStdString & portId)
{
std::map<CStdString, CapturePortRef>::iterator pair;
pair = m_ports.find(portId);
if (pair == m_ports.end())
{
CapturePortRef nullPortRef;
return nullPortRef;
}
else
{
return pair->second;
}
}
CapturePortRef CapturePorts::AddAndReturnPort(CStdString & portId)
{
//MutexGuard mutexGuard(m_mutex); // To make sure a channel cannot be created twice
CapturePortRef portRef = GetPort(portId);
if (portRef.get() == NULL)
{
// The port does not already exist, create it.
CapturePortRef newPortRef(new CapturePort(portId));
m_ports.insert(std::make_pair(portId, newPortRef));
return newPortRef;
}
else
{
return portRef;
}
}
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