ITANetAudioStreamingServer.cpp 9.41 KB
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#include <ITANetAudioStreamingServer.h>
#include <ITANetAudioServer.h>
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#include <ITANetAudioMessage.h>
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// ITA includes
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#include <ITADataSource.h>
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#include <ITANetAudioMessage.h>
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#include <ITAException.h>
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#include <ITAStreamInfo.h>
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#include <ITAClock.h>
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// Vista includes
#include <VistaInterProcComm/Concurrency/VistaThreadLoop.h>
#include <VistaInterProcComm/Connections/VistaConnectionIP.h>
#include <VistaInterProcComm/IPNet/VistaTCPSocket.h>
#include <VistaBase/VistaTimeUtils.h>
#include <VistaInterProcComm/IPNet/VistaIPAddress.h>
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#include <VistaBase/VistaStreamUtils.h>
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#include <ITADataLog.h>
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// STL
#include <cmath>
#include <cassert>

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struct ITAServerLog : public ITALogDataBase
{
	inline static std::ostream& outputDesc( std::ostream& os )
	{
		os << "BlockId";
		os << "\t" << "WorldTimeStamp";
		os << "\t" << "ProtocolStatus";
		os << "\t" << "FreeSamples";
		os << std::endl;
		return os;
	};

	inline std::ostream& outputData( std::ostream& os ) const
	{
		os << uiBlockId;
		os << "\t" << std::setprecision( 12 ) << dWorldTimeStamp;
		os << "\t" << iProtocolStatus;
		os << "\t" << iFreeSamples;
		os << std::endl;
		return os;
	};

	unsigned int uiBlockId; //!< Block identifier (audio streaming)
	double dWorldTimeStamp;
	int iProtocolStatus; //!< ... usw
	int iFreeSamples;
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};

class ITABufferedDataLoggerImplServer : public ITABufferedDataLogger < ITAServerLog > {};

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CITANetAudioStreamingServer::CITANetAudioStreamingServer()
	: m_pInputStream(NULL)
	, m_iUpdateStrategy(AUTO)
	, m_pConnection(NULL)
	, m_pNetAudioServer(new CITANetAudioServer())
	, m_dLastTimeStamp(0)
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{
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	iServerBlockId = 0;
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	m_iMaxSendBlocks = 40;
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	m_iClientRingBufferFreeSamples = 0;
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}

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CITANetAudioStreamingServer::~CITANetAudioStreamingServer()
{
	delete m_pNetAudioServer;
	delete m_pServerLogger;
}

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bool CITANetAudioStreamingServer::Start( const std::string& sAddress, int iPort )
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{
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	if ( !m_pInputStream )
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		ITA_EXCEPT1( MODAL_EXCEPTION, "Can not start server without a valid input stream" );

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	if ( !m_pNetAudioServer->Start( sAddress, iPort ) ) // blocking
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		return false;

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	m_pConnection = m_pNetAudioServer->GetConnection( );
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	m_pMessage = new CITANetAudioMessage( m_pConnection->GetByteorderSwapFlag( ) );
	m_pMessage->ResetMessage( );
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	m_pMessage->SetConnection( m_pConnection );
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	while ( !m_pMessage->ReadMessage( 0 ) ); //blocking
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	assert( m_pMessage->GetMessageType( ) == CITANetAudioProtocol::NP_CLIENT_OPEN );
	CITANetAudioProtocol::StreamingParameters oClientParams = m_pMessage->ReadStreamingParameters( );
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	bool bOK = false;
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	m_oServerParams.iRingBufferSize = oClientParams.iRingBufferSize;
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	m_oServerParams.iTargetSampleLatency = oClientParams.iTargetSampleLatency;
	m_iClientRingBufferFreeSamples = m_oServerParams.iTargetSampleLatency;

	m_dLastTimeStamp = ITAClock::getDefaultClock()->getTime();
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	if ( m_oServerParams == oClientParams )
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	{
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		bOK = true;
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#ifdef NET_AUDIO_SHOW_TRAFFIC
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		vstr::out() << "[ITANetAudioStreamingServer] Server and client parameters matched. Will resume with streaming" << std::endl;
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	}
	else
	{
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		vstr::out() << "[ITANetAudioStreamingServer] Server and client parameters mismatch detected. Will notify client and stop." << std::endl;
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#endif
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	}
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	std::string paras = std::string( "NetAudioLogServer" ) + std::string( "_BS" ) + std::to_string( m_oServerParams.iBlockSize ) + std::string( "_Ch" ) + std::to_string( m_oServerParams.iChannels ) + std::string( ".txt" );
	m_pServerLogger = new ITABufferedDataLoggerImplServer( );
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	m_pServerLogger->setOutputFile( paras );
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	m_pMessage->SetMessageType( CITANetAudioProtocol::NP_SERVER_OPEN );
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	m_pMessage->WriteBool( bOK );
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	m_pMessage->WriteMessage( );
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	m_sfTempTransmitBuffer.init( m_pInputStream->GetNumberOfChannels( ), m_oServerParams.iRingBufferSize, true );


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	if ( bOK )
		Run( );
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	return bOK;
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}

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bool CITANetAudioStreamingServer::LoopBody( )
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{
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	bool bAskClient = false;
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	m_pMessage->ResetMessage( );
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	ITAServerLog oLog;
	oLog.uiBlockId = ++iServerBlockId;
	int iMsgType;
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	// Sending Samples 
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	unsigned int uiBlockLength = m_pInputStream->GetBlocklength( );
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	int iClientRingBufferTargetFreeSamples = m_iClientRingBufferFreeSamples - (m_oServerParams.iRingBufferSize - m_oServerParams.iTargetSampleLatency);
	if (iClientRingBufferTargetFreeSamples < 0)
		iClientRingBufferTargetFreeSamples = 0;
	if (iClientRingBufferTargetFreeSamples >= uiBlockLength)
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	{
		// Send Samples
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		int iSendBlocks = iClientRingBufferTargetFreeSamples / uiBlockLength;
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		bAskClient = true;
		
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		if ( m_sfTempTransmitBuffer.GetLength( ) != iSendBlocks * uiBlockLength )
			m_sfTempTransmitBuffer.init( m_pInputStream->GetNumberOfChannels( ), iSendBlocks * uiBlockLength, false );
		
		for ( int j = 0; j < iSendBlocks; j++ )
		{
			for ( int i = 0; i < int( m_pInputStream->GetNumberOfChannels( ) ); i++ )
			{
				ITAStreamInfo oStreamInfo;
				oStreamInfo.nSamples = uiBlockLength;

				const float* pfData = m_pInputStream->GetBlockPointer( i, &oStreamInfo );
				if ( pfData != 0 )
					m_sfTempTransmitBuffer[ i ].write( pfData, uiBlockLength, j * uiBlockLength );
			}
			m_pInputStream->IncrementBlockPointer( );
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		}
		iMsgType = CITANetAudioProtocol::NP_SERVER_SENDING_SAMPLES;
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		m_pMessage->SetMessageType(iMsgType);
		m_pMessage->WriteSampleFrame(&m_sfTempTransmitBuffer);
		m_pMessage->WriteMessage();
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		m_iClientRingBufferFreeSamples -= iSendBlocks * uiBlockLength;
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#ifdef NET_AUDIO_SHOW_TRAFFIC
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		vstr::out() << "[ITANetAudioStreamingServer] Transmitted " << iSendSamples << " samples for "
			<< m_pInputStream->GetNumberOfChannels() << " channels" << std::endl;
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#endif
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	}
	else
		bAskClient = true;

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	// Try to Empfange Daten
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	m_pMessage->ResetMessage( );
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	if ( m_pMessage->ReadMessage( 1 ) )
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	{
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		ITAServerLog oLog;
		oLog.uiBlockId = ++iServerBlockId;
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		int iMsgType = m_pMessage->GetMessageType( );
		switch ( iMsgType )
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		{
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			case CITANetAudioProtocol::NP_CLIENT_SENDING_RINGBUFFER_FREE_SAMPLES:
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			{
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				m_iClientRingBufferFreeSamples = m_pMessage->ReadInt( );
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				m_dLastTimeStamp = ITAClock::getDefaultClock()->getTime();
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				bAskClient = false;
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				break;
			}
			case CITANetAudioProtocol::NP_CLIENT_CLOSE:
			{
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				m_pMessage->ResetMessage();
				m_pMessage->SetMessageType( CITANetAudioProtocol::NP_SERVER_CLOSE );
				m_pMessage->WriteMessage();

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				StopGently( false );
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				m_pConnection = NULL;
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				Stop( );
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				bAskClient = false;
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				break;
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			}
			default:
			{
				vstr::out( ) << "[ITANetAudioStreamingServer] Unkown protocol type : " << iMsgType << std::endl;
				break;
			}
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		}
		oLog.iFreeSamples = m_iClientRingBufferFreeSamples;
		oLog.iProtocolStatus = iMsgType;
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		oLog.dWorldTimeStamp = ITAClock::getDefaultClock( )->getTime( );
		m_pServerLogger->log( oLog );
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	}
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	else
	{
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		/*
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		ITAServerLog oLog;
		oLog.uiBlockId = ++iServerBlockId;
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		// Neue Samples, bei ca 1ms warten
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		double dTimeDiff = ITAClock::getDefaultClock()->getTime() - m_dLastTimeStamp;
		float dSamples = dTimeDiff * m_pInputStream->GetSampleRate();
		m_dLastTimeStamp = ITAClock::getDefaultClock()->getTime();
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		int iSamples = ( int ) dSamples;
		int offset = iSamples % m_pInputStream->GetBlocklength( );
		m_iClientRingBufferFreeSamples += iSamples - offset;
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		oLog.iFreeSamples = m_iClientRingBufferFreeSamples;
		oLog.iProtocolStatus = 555;
		oLog.dWorldTimeStamp = ITAClock::getDefaultClock()->getTime();
		m_pServerLogger->log(oLog);
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		*/
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	}
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	bAskClient = false;
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	if (bAskClient)
	{
#ifdef NET_AUDIO_SHOW_TRAFFIC
		vstr::out() << "[ITANetAudioStreamingServer] Not enough free samples in client buffer, requesting a trigger when more free samples available" << std::endl;
#endif
		ITAServerLog oLog;
		oLog.uiBlockId = ++iServerBlockId;
		m_pMessage->ResetMessage();
		iMsgType = CITANetAudioProtocol::NP_SERVER_GET_RINGBUFFER_FREE_SAMPLES;
		m_pMessage->SetMessageType(iMsgType);
		m_pMessage->WriteBool(true);
		m_pMessage->WriteMessage();
		oLog.iProtocolStatus = iMsgType;
		oLog.iFreeSamples = m_iClientRingBufferFreeSamples;
		oLog.dWorldTimeStamp = ITAClock::getDefaultClock()->getTime();
		m_pServerLogger->log(oLog);
	}


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	return false;
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}

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void CITANetAudioStreamingServer::SetInputStream( ITADatasource* pInStream )
{
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	if ( VistaThreadLoop::IsRunning( ) )
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		ITA_EXCEPT1( MODAL_EXCEPTION, "Streaming loop already running, can not change input stream" );

	m_pInputStream = pInStream;
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	m_oServerParams.dSampleRate = m_pInputStream->GetSampleRate( );
	m_oServerParams.iBlockSize = m_pInputStream->GetBlocklength( );
	m_oServerParams.iChannels = m_pInputStream->GetNumberOfChannels( );
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}

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ITADatasource* CITANetAudioStreamingServer::GetInputStream( ) const
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{
	return m_pInputStream;
}

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int CITANetAudioStreamingServer::GetNetStreamBlocklength( ) const
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{
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	return m_sfTempTransmitBuffer.GetLength( );
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}

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int CITANetAudioStreamingServer::GetNetStreamNumberOfChannels( ) const
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{
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	return m_sfTempTransmitBuffer.channels( );
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}

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void CITANetAudioStreamingServer::SetAutomaticUpdateRate( )
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{
	m_iUpdateStrategy = AUTO;
}

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bool CITANetAudioStreamingServer::IsClientConnected( ) const
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{
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	return m_pNetAudioServer->IsConnected( );
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}

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std::string CITANetAudioStreamingServer::GetNetworkAddress( ) const
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{
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	return m_pNetAudioServer->GetServerAddress( );
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}

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int CITANetAudioStreamingServer::GetNetworkPort( ) const
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{
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	return m_pNetAudioServer->GetNetworkPort( );
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}

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void CITANetAudioStreamingServer::Stop( )
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{
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	m_pNetAudioServer->Stop( );
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}