First checkin

git-svn-id: https://oreka.svn.sourceforge.net/svnroot/oreka/trunk@2 09dcff7a-b715-0410-9601-b79a96267cd0

1 files changed, 197 insertions, 0 deletions

diff --git a/orkaudio/CapturePluginProxy.cpp b/orkaudio/CapturePluginProxy.cpp
new file mode 100644
index 0000000..7c4acbc
--- /dev/null
+++ b/orkaudio/CapturePluginProxy.cpp
@@ -0,0 +1,197 @@
+/*
+ * 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 "ConfigManager.h"
+#include "CapturePort.h"
+
+CapturePluginProxy::CapturePluginProxy()
+{
+	m_configureFunction = NULL;
+	m_registerCallBacksFunction = NULL;
+	m_initializeFunction = NULL;
+	m_runFunction = NULL;
+	m_startCaptureFunction = NULL;
+	m_stopCaptureFunction = NULL;
+
+	m_loaded = false;
+}
+
+bool CapturePluginProxy::Initialize()
+{
+	// 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();
+		if(error)
+		{
+			LOG4CXX_ERROR(LOG.rootLog, CStdString("Failed to load the following plugin: ") + pluginPath);
+		}
+		else
+		{
+			// Ok, the dll has been successfully loaded
+			RegisterCallBacksFunction registerCallBacks;
+			registerCallBacks = (RegisterCallBacksFunction)m_dll.symbol("RegisterCallBacks");
+			registerCallBacks(AudioChunkCallBack, CaptureEventCallBack, LogManagerSingleton::instance());
+
+			m_configureFunction = (ConfigureFunction)m_dll.symbol("Configure");
+			if (m_configureFunction)
+			{
+				ConfigManagerSingleton::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_loaded = true;
+							}
+							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()
+{
+	m_runFunction();
+}
+
+void CapturePluginProxy::StartCapture(CStdString& capturePort)
+{
+	if(m_loaded)
+	{
+		m_startCaptureFunction(capturePort);
+	}
+	else
+	{
+		throw(CStdString("StartCapture: Capture plugin not yet loaded"));
+	}
+}
+
+void CapturePluginProxy::StopCapture(CStdString& capturePort)
+{
+	if(m_loaded)
+	{
+		m_stopCaptureFunction(capturePort);
+	}
+	else
+	{
+		throw(CStdString("StopCapture: Capture plugin not yet loaded"));
+	}
+}
+
+void __CDECL__  CapturePluginProxy::AudioChunkCallBack(AudioChunkRef chunkRef, CStdString& capturePort, bool remote)
+{
+	// find the right port and give it the audio chunk
+	CapturePortRef portRef = CapturePortsSingleton::instance()->AddAndReturnPort(capturePort);
+	portRef->AddAudioChunk(chunkRef, remote);
+}
+
+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)
+		{
+			LOG4CXX_ERROR(LOG.portLog, "#" + capturePort + ": received start or stop while in VAD or audio segmentation mode");
+		}
+	}
+	else
+	{
+		// find the right port and give it the event
+		CapturePortRef portRef = CapturePortsSingleton::instance()->AddAndReturnPort(capturePort);
+		portRef->AddCaptureEvent(eventRef);
+	}
+}
+