From 8278fd69bdca293e4e8a094dcdb7d985c97f3b7d Mon Sep 17 00:00:00 2001
From: Gerald Begumisa <ben_g@users.sourceforge.net>
Date: Tue, 11 Nov 2008 17:40:24 +0000
Subject: Enhanced the audio segmentation feature such that it may be used on
 other feeds apart from continuous streams. This means it now works correctly
 with VoIP or TDM feeds

git-svn-id: https://oreka.svn.sourceforge.net/svnroot/oreka/trunk@569 09dcff7a-b715-0410-9601-b79a96267cd0
---
 orkbasecxx/CapturePluginProxy.cpp | 26 ++++++++++++++++++++++-
 orkbasecxx/CapturePort.cpp        | 43 +++++++++++++++++++++++++++++++++++++++
 orkbasecxx/CapturePort.h          |  5 +++++
 3 files changed, 73 insertions(+), 1 deletion(-)

(limited to 'orkbasecxx')

diff --git a/orkbasecxx/CapturePluginProxy.cpp b/orkbasecxx/CapturePluginProxy.cpp
index fbfc3da..925c14a 100644
--- a/orkbasecxx/CapturePluginProxy.cpp
+++ b/orkbasecxx/CapturePluginProxy.cpp
@@ -217,7 +217,31 @@ void __CDECL__ CapturePluginProxy::CaptureEventCallBack(CaptureEventRef eventRef
 	{
 		if (eventRef->m_type == CaptureEvent::EtStart || eventRef->m_type == CaptureEvent::EtStop)
 		{
-			LOG4CXX_ERROR(LOG.portLog, "#" + capturePort + ": received start or stop while in VAD or audio segmentation mode");
+			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
diff --git a/orkbasecxx/CapturePort.cpp b/orkbasecxx/CapturePort.cpp
index b07a6c2..24b2ce4 100644
--- a/orkbasecxx/CapturePort.cpp
+++ b/orkbasecxx/CapturePort.cpp
@@ -31,6 +31,7 @@ CapturePort::CapturePort(CStdString& id)
 	m_capturing = false;
 	m_lastUpdated = 0;
 	m_needSendStop = false;
+	m_segmentNumber = 0;
 
 	LoadFilters();
 }
@@ -89,6 +90,44 @@ void CapturePort::FilterCaptureEvent(CaptureEventRef& eventRef)
 	}
 }
 
+void CapturePort::QueueCaptureEvent(CaptureEventRef& eventRef)
+{
+	m_captureEvents.push_back(eventRef);
+}
+
+void CapturePort::ClearEventQueue()
+{
+	m_captureEvents.clear();
+}
+
+void CapturePort::ReportEventBacklog(AudioTapeRef& audioTape)
+{
+	std::list<CaptureEventRef>::iterator it;
+
+	for(it = m_captureEvents.begin(); it != m_captureEvents.end(); it++)
+	{
+		CaptureEventRef eventRef = *it;
+
+		if(eventRef->m_type == CaptureEvent::EtOrkUid)
+		{
+			CStdString newOrkUid;
+			CaptureEventRef eventRef2(new CaptureEvent());
+
+			m_segmentNumber += 1;
+			newOrkUid.Format("%s_%d", eventRef->m_value, m_segmentNumber);
+
+			eventRef2->m_type = CaptureEvent::EtOrkUid;
+			eventRef2->m_value = newOrkUid;
+
+			AddCaptureEvent(eventRef2);
+		}
+		else
+		{
+			AddCaptureEvent(eventRef);
+		}
+	}
+}
+
 void CapturePort::AddAudioChunk(AudioChunkRef chunkRef)
 {
 	FilterAudioChunk(chunkRef);
@@ -114,8 +153,10 @@ void CapturePort::AddAudioChunk(AudioChunkRef chunkRef)
 				// signal new tape start event
 				eventRef.reset(new CaptureEvent);
 				eventRef->m_type = CaptureEvent::EtStart;
+				eventRef->m_value = m_id;
 				eventRef->m_timestamp = now;
 				AddCaptureEvent(eventRef);
+				ReportEventBacklog(m_audioTapeRef);
 			}
 		}	
 		else
@@ -127,7 +168,9 @@ void CapturePort::AddAudioChunk(AudioChunkRef chunkRef)
 			CaptureEventRef eventRef(new CaptureEvent);
 			eventRef->m_type = CaptureEvent::EtStart;
 			eventRef->m_timestamp = now;
+			eventRef->m_value = m_id;
 			AddCaptureEvent(eventRef);
+			ReportEventBacklog(m_audioTapeRef);
 		}
 	}
 	else if (CONFIG.m_vad)
diff --git a/orkbasecxx/CapturePort.h b/orkbasecxx/CapturePort.h
index 20bbfe8..3b72f6f 100644
--- a/orkbasecxx/CapturePort.h
+++ b/orkbasecxx/CapturePort.h
@@ -41,11 +41,14 @@ public:
 	void AddCaptureEvent(CaptureEventRef eventRef);
 	bool IsExpired(time_t now);
 	void Finalize();
+	void QueueCaptureEvent(CaptureEventRef& eventRef);
+	void ClearEventQueue();
 
 private:
 	void LoadFilters();
 	void FilterAudioChunk(AudioChunkRef& chunkRef);
 	void FilterCaptureEvent(CaptureEventRef& eventRef);
+	void ReportEventBacklog(AudioTapeRef& audioTape);
 
 	CStdString m_id;
 	AudioTapeRef m_audioTapeRef;
@@ -55,7 +58,9 @@ private:
 	bool m_vadUp;
 	time_t m_lastUpdated;
 	std::list<FilterRef> m_filters;
+	std::list<CaptureEventRef> m_captureEvents;
 	bool m_needSendStop;
+	int m_segmentNumber;
 };
 
 typedef boost::shared_ptr<CapturePort> CapturePortRef;
-- 
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