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35eb0fe4aa
jamulus/src/server.cpp
Volker Fischer 35eb0fe4aa some more CELT work
2009-08-01 09:37:39 +00:00

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/******************************************************************************\
* Copyright (c) 2004-2009
*
* Author(s):
* Volker Fischer
*
******************************************************************************
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
\******************************************************************************/
#include "server.h"
// CHighPrecisionTimer implementation ******************************************
CHighPrecisionTimer::CHighPrecisionTimer()
{
// add some error checking, the high precision timer implementation only
// supports 128 and 256 samples frame size at 48 kHz sampling rate
#if ( ( SYSTEM_BLOCK_FRAME_SAMPLES != 128 ) && ( SYSTEM_BLOCK_FRAME_SAMPLES != 256 ) )
# error "Only system frame sizes of 128 and 256 samples are supported by this module"
#endif
#if SYSTEM_SAMPLE_RATE != 48000
# error "Only a system sample rate of 48 kHz is supported by this module"
#endif
// Since QT only supports a minimum timer resolution of 1 ms but for our
// llcon server we require a timer interval of 2.333 ms for 128 samples
// frame size and 5.666 ms for 256 samples frame size at 48 kHz sampling
// rate.
// To support this interval, we use a timer at the minimum supported
// resolution and fire the actual frame timer if the error to the actual
// required interval is minimum.
veciTimeOutIntervals.Init ( 3 );
if ( SYSTEM_BLOCK_FRAME_SAMPLES == 128 )
{
// for 128 sample frame size at 48 kHz sampling rate:
// actual intervals: 0.0 2.666 5.333 8.0
// quantized to 1 ms: 0 3 5 8 (0)
veciTimeOutIntervals[0] = 3;
veciTimeOutIntervals[1] = 2;
veciTimeOutIntervals[2] = 3;
}
else
{
// for 256 sample frame size at 48 kHz sampling rate:
// actual intervals: 0.0 5.333 10.666 16.0
// quantized to 1 ms: 0 5 11 16 (0)
veciTimeOutIntervals[0] = 5;
veciTimeOutIntervals[1] = 6;
veciTimeOutIntervals[2] = 5;
}
// connect timer timeout signal
QObject::connect ( &Timer, SIGNAL ( timeout() ),
this, SLOT ( OnTimer() ) );
}
void CHighPrecisionTimer::start()
{
// reset position pointer and counter
iCurPosInVector = 0;
iIntervalCounter = 0;
// start internal timer with lowest possible resolution
Timer.start ( MIN_TIMER_RESOLUTION_MS );
}
void CHighPrecisionTimer::stop()
{
// stop timer
Timer.stop();
}
void CHighPrecisionTimer::OnTimer()
{
// check if maximum number of high precision timer intervals are
// finished
if ( veciTimeOutIntervals[iCurPosInVector] == iIntervalCounter )
{
// reset interval counter
iIntervalCounter = 0;
// go to next position in vector, take care of wrap around
iCurPosInVector++;
if ( iCurPosInVector == veciTimeOutIntervals.Size() )
{
iCurPosInVector = 0;
}
// minimum time error to actual required timer interval is reached,
// emit signal for server
emit timeout();
}
else
{
// next high precision timer interval
iIntervalCounter++;
}
}
// CServer implementation ******************************************************
CServer::CServer ( const QString& strLoggingFileName,
const quint16 iPortNumber,
const QString& strHTMLStatusFileName,
const QString& strHistoryFileName,
const QString& strServerNameForHTMLStatusFile ) :
Socket ( this, iPortNumber ),
bWriteStatusHTMLFile ( false )
{
int i;
// enable all channels (for the server all channel must be enabled the
// entire life time of the software
for ( i = 0; i < USED_NUM_CHANNELS; i++ )
{
vecChannels[i].SetEnable ( true );
}
// define colors for chat window identifiers
vstrChatColors.Init ( 6 );
vstrChatColors[0] = "mediumblue";
vstrChatColors[1] = "red";
vstrChatColors[2] = "darkorchid";
vstrChatColors[3] = "green";
vstrChatColors[4] = "maroon";
vstrChatColors[5] = "coral";
vecsSendData.Init ( SYSTEM_BLOCK_FRAME_SAMPLES );
// init moving average buffer for response time evaluation
CycleTimeVariance.Init ( SYSTEM_BLOCK_FRAME_SAMPLES,
SYSTEM_SAMPLE_RATE, TIME_MOV_AV_RESPONSE );
// enable logging (if requested)
if ( !strLoggingFileName.isEmpty() )
{
Logging.Start ( strLoggingFileName );
}
// enable history graph (if requested)
if ( !strHistoryFileName.isEmpty() )
{
Logging.EnableHistory ( strHistoryFileName );
}
// HTML status file writing
if ( !strHTMLStatusFileName.isEmpty() )
{
QString strCurServerNameForHTMLStatusFile = strServerNameForHTMLStatusFile;
// if server name is empty, substitude a default name
if ( strCurServerNameForHTMLStatusFile.isEmpty() )
{
strCurServerNameForHTMLStatusFile = "[server address]";
}
// (the static cast to integer of the port number is required so that it
// works correctly under Linux)
StartStatusHTMLFileWriting ( strHTMLStatusFileName,
strCurServerNameForHTMLStatusFile + ":" +
QString().number( static_cast<int> ( iPortNumber ) ) );
}
// create CELT encoder/decoder for each channel
for ( i = 0; i < USED_NUM_CHANNELS; i++ )
{
// init audio endocder/decoder (mono)
CeltMode[i] = celt_mode_create (
SYSTEM_SAMPLE_RATE, 1, SYSTEM_BLOCK_FRAME_SAMPLES, NULL );
CeltEncoder[i] = celt_encoder_create ( CeltMode[i] );
CeltDecoder[i] = celt_decoder_create ( CeltMode[i] );
}
// TODO init these variables:
// iCeltNumCodedBytes[MAX_NUM_CHANNELS];
// vecCeltData[MAX_NUM_CHANNELS];
// connections -------------------------------------------------------------
// connect timer timeout signal
QObject::connect ( &HighPrecisionTimer, SIGNAL ( timeout() ),
this, SLOT ( OnTimer() ) );
// CODE TAG: MAX_NUM_CHANNELS_TAG
// make sure we have MAX_NUM_CHANNELS connections!!!
// send message
QObject::connect ( &vecChannels[0], SIGNAL ( MessReadyForSending ( CVector<uint8_t> ) ), this, SLOT ( OnSendProtMessCh0 ( CVector<uint8_t> ) ) );
QObject::connect ( &vecChannels[1], SIGNAL ( MessReadyForSending ( CVector<uint8_t> ) ), this, SLOT ( OnSendProtMessCh1 ( CVector<uint8_t> ) ) );
QObject::connect ( &vecChannels[2], SIGNAL ( MessReadyForSending ( CVector<uint8_t> ) ), this, SLOT ( OnSendProtMessCh2 ( CVector<uint8_t> ) ) );
QObject::connect ( &vecChannels[3], SIGNAL ( MessReadyForSending ( CVector<uint8_t> ) ), this, SLOT ( OnSendProtMessCh3 ( CVector<uint8_t> ) ) );
QObject::connect ( &vecChannels[4], SIGNAL ( MessReadyForSending ( CVector<uint8_t> ) ), this, SLOT ( OnSendProtMessCh4 ( CVector<uint8_t> ) ) );
QObject::connect ( &vecChannels[5], SIGNAL ( MessReadyForSending ( CVector<uint8_t> ) ), this, SLOT ( OnSendProtMessCh5 ( CVector<uint8_t> ) ) );
QObject::connect ( &vecChannels[6], SIGNAL ( MessReadyForSending ( CVector<uint8_t> ) ), this, SLOT ( OnSendProtMessCh6 ( CVector<uint8_t> ) ) );
QObject::connect ( &vecChannels[7], SIGNAL ( MessReadyForSending ( CVector<uint8_t> ) ), this, SLOT ( OnSendProtMessCh7 ( CVector<uint8_t> ) ) );
QObject::connect ( &vecChannels[8], SIGNAL ( MessReadyForSending ( CVector<uint8_t> ) ), this, SLOT ( OnSendProtMessCh8 ( CVector<uint8_t> ) ) );
QObject::connect ( &vecChannels[9], SIGNAL ( MessReadyForSending ( CVector<uint8_t> ) ), this, SLOT ( OnSendProtMessCh9 ( CVector<uint8_t> ) ) );
// request jitter buffer size
QObject::connect ( &vecChannels[0], SIGNAL ( NewConnection() ), this, SLOT ( OnNewConnectionCh0() ) );
QObject::connect ( &vecChannels[1], SIGNAL ( NewConnection() ), this, SLOT ( OnNewConnectionCh1() ) );
QObject::connect ( &vecChannels[2], SIGNAL ( NewConnection() ), this, SLOT ( OnNewConnectionCh2() ) );
QObject::connect ( &vecChannels[3], SIGNAL ( NewConnection() ), this, SLOT ( OnNewConnectionCh3() ) );
QObject::connect ( &vecChannels[4], SIGNAL ( NewConnection() ), this, SLOT ( OnNewConnectionCh4() ) );
QObject::connect ( &vecChannels[5], SIGNAL ( NewConnection() ), this, SLOT ( OnNewConnectionCh5() ) );
QObject::connect ( &vecChannels[6], SIGNAL ( NewConnection() ), this, SLOT ( OnNewConnectionCh6() ) );
QObject::connect ( &vecChannels[7], SIGNAL ( NewConnection() ), this, SLOT ( OnNewConnectionCh7() ) );
QObject::connect ( &vecChannels[8], SIGNAL ( NewConnection() ), this, SLOT ( OnNewConnectionCh8() ) );
QObject::connect ( &vecChannels[9], SIGNAL ( NewConnection() ), this, SLOT ( OnNewConnectionCh9() ) );
// request connected clients list
QObject::connect ( &vecChannels[0], SIGNAL ( ReqConnClientsList() ), this, SLOT ( OnReqConnClientsListCh0() ) );
QObject::connect ( &vecChannels[1], SIGNAL ( ReqConnClientsList() ), this, SLOT ( OnReqConnClientsListCh1() ) );
QObject::connect ( &vecChannels[2], SIGNAL ( ReqConnClientsList() ), this, SLOT ( OnReqConnClientsListCh2() ) );
QObject::connect ( &vecChannels[3], SIGNAL ( ReqConnClientsList() ), this, SLOT ( OnReqConnClientsListCh3() ) );
QObject::connect ( &vecChannels[4], SIGNAL ( ReqConnClientsList() ), this, SLOT ( OnReqConnClientsListCh4() ) );
QObject::connect ( &vecChannels[5], SIGNAL ( ReqConnClientsList() ), this, SLOT ( OnReqConnClientsListCh5() ) );
QObject::connect ( &vecChannels[6], SIGNAL ( ReqConnClientsList() ), this, SLOT ( OnReqConnClientsListCh6() ) );
QObject::connect ( &vecChannels[7], SIGNAL ( ReqConnClientsList() ), this, SLOT ( OnReqConnClientsListCh7() ) );
QObject::connect ( &vecChannels[8], SIGNAL ( ReqConnClientsList() ), this, SLOT ( OnReqConnClientsListCh8() ) );
QObject::connect ( &vecChannels[9], SIGNAL ( ReqConnClientsList() ), this, SLOT ( OnReqConnClientsListCh9() ) );
// channel name has changed
QObject::connect ( &vecChannels[0], SIGNAL ( NameHasChanged() ), this, SLOT ( OnNameHasChangedCh0() ) );
QObject::connect ( &vecChannels[1], SIGNAL ( NameHasChanged() ), this, SLOT ( OnNameHasChangedCh1() ) );
QObject::connect ( &vecChannels[2], SIGNAL ( NameHasChanged() ), this, SLOT ( OnNameHasChangedCh2() ) );
QObject::connect ( &vecChannels[3], SIGNAL ( NameHasChanged() ), this, SLOT ( OnNameHasChangedCh3() ) );
QObject::connect ( &vecChannels[4], SIGNAL ( NameHasChanged() ), this, SLOT ( OnNameHasChangedCh4() ) );
QObject::connect ( &vecChannels[5], SIGNAL ( NameHasChanged() ), this, SLOT ( OnNameHasChangedCh5() ) );
QObject::connect ( &vecChannels[6], SIGNAL ( NameHasChanged() ), this, SLOT ( OnNameHasChangedCh6() ) );
QObject::connect ( &vecChannels[7], SIGNAL ( NameHasChanged() ), this, SLOT ( OnNameHasChangedCh7() ) );
QObject::connect ( &vecChannels[8], SIGNAL ( NameHasChanged() ), this, SLOT ( OnNameHasChangedCh8() ) );
QObject::connect ( &vecChannels[9], SIGNAL ( NameHasChanged() ), this, SLOT ( OnNameHasChangedCh9() ) );
// chat text received
QObject::connect ( &vecChannels[0], SIGNAL ( ChatTextReceived ( QString ) ), this, SLOT ( OnChatTextReceivedCh0 ( QString ) ) );
QObject::connect ( &vecChannels[1], SIGNAL ( ChatTextReceived ( QString ) ), this, SLOT ( OnChatTextReceivedCh1 ( QString ) ) );
QObject::connect ( &vecChannels[2], SIGNAL ( ChatTextReceived ( QString ) ), this, SLOT ( OnChatTextReceivedCh2 ( QString ) ) );
QObject::connect ( &vecChannels[3], SIGNAL ( ChatTextReceived ( QString ) ), this, SLOT ( OnChatTextReceivedCh3 ( QString ) ) );
QObject::connect ( &vecChannels[4], SIGNAL ( ChatTextReceived ( QString ) ), this, SLOT ( OnChatTextReceivedCh4 ( QString ) ) );
QObject::connect ( &vecChannels[5], SIGNAL ( ChatTextReceived ( QString ) ), this, SLOT ( OnChatTextReceivedCh5 ( QString ) ) );
QObject::connect ( &vecChannels[6], SIGNAL ( ChatTextReceived ( QString ) ), this, SLOT ( OnChatTextReceivedCh6 ( QString ) ) );
QObject::connect ( &vecChannels[7], SIGNAL ( ChatTextReceived ( QString ) ), this, SLOT ( OnChatTextReceivedCh7 ( QString ) ) );
QObject::connect ( &vecChannels[8], SIGNAL ( ChatTextReceived ( QString ) ), this, SLOT ( OnChatTextReceivedCh8 ( QString ) ) );
QObject::connect ( &vecChannels[9], SIGNAL ( ChatTextReceived ( QString ) ), this, SLOT ( OnChatTextReceivedCh9 ( QString ) ) );
// ping message received
QObject::connect ( &vecChannels[0], SIGNAL ( PingReceived ( int ) ), this, SLOT ( OnPingReceivedCh0 ( int ) ) );
QObject::connect ( &vecChannels[1], SIGNAL ( PingReceived ( int ) ), this, SLOT ( OnPingReceivedCh1 ( int ) ) );
QObject::connect ( &vecChannels[2], SIGNAL ( PingReceived ( int ) ), this, SLOT ( OnPingReceivedCh2 ( int ) ) );
QObject::connect ( &vecChannels[3], SIGNAL ( PingReceived ( int ) ), this, SLOT ( OnPingReceivedCh3 ( int ) ) );
QObject::connect ( &vecChannels[4], SIGNAL ( PingReceived ( int ) ), this, SLOT ( OnPingReceivedCh4 ( int ) ) );
QObject::connect ( &vecChannels[5], SIGNAL ( PingReceived ( int ) ), this, SLOT ( OnPingReceivedCh5 ( int ) ) );
QObject::connect ( &vecChannels[6], SIGNAL ( PingReceived ( int ) ), this, SLOT ( OnPingReceivedCh6 ( int ) ) );
QObject::connect ( &vecChannels[7], SIGNAL ( PingReceived ( int ) ), this, SLOT ( OnPingReceivedCh7 ( int ) ) );
QObject::connect ( &vecChannels[8], SIGNAL ( PingReceived ( int ) ), this, SLOT ( OnPingReceivedCh8 ( int ) ) );
QObject::connect ( &vecChannels[9], SIGNAL ( PingReceived ( int ) ), this, SLOT ( OnPingReceivedCh9 ( int ) ) );
}
void CServer::OnSendProtMessage ( int iChID, CVector<uint8_t> vecMessage )
{
// the protocol queries me to call the function to send the message
// send it through the network
Socket.SendPacket ( vecMessage, GetAddress ( iChID ) );
}
void CServer::Start()
{
// only start if not already running
if ( !IsRunning() )
{
// start timer
HighPrecisionTimer.start();
// init time for response time evaluation
CycleTimeVariance.Reset();
}
}
void CServer::Stop()
{
// stop timer
HighPrecisionTimer.stop();
// logging (add "server stopped" logging entry)
Logging.AddServerStopped();
}
void CServer::OnTimer()
{
CVector<int> vecChanID;
CVector<CVector<double> > vecvecdData ( SYSTEM_BLOCK_FRAME_SAMPLES );
CVector<CVector<double> > vecvecdGains;
// get data from all connected clients
GetBlockAllConC ( vecChanID, vecvecdData, vecvecdGains );
const int iNumClients = vecChanID.Size();
// Check if at least one client is connected. If not, stop server until
// one client is connected
if ( iNumClients != 0 )
{
for ( int i = 0; i < iNumClients; i++ )
{
// generate a sparate mix for each channel
// actual processing of audio data -> mix
vecsSendData = ProcessData ( vecvecdData, vecvecdGains[i] );
// send separate mix to current clients
// Socket.SendPacket (
// PrepSendPacket ( vecChanID[i], vecsSendData ),
// GetAddress ( vecChanID[i] ) );
}
}
else
{
// Disable server if no clients are connected. In this case the server
// does not consume any significant CPU when no client is connected.
Stop();
}
// update response time measurement
CycleTimeVariance.Update();
}
void CServer::GetBlockAllConC ( CVector<int>& vecChanID,
CVector<CVector<double> >& vecvecdData,
CVector<CVector<double> >& vecvecdGains )
{
int i, j;
bool bChannelIsNowDisconnected = false;
// init temporal data vector and clear input buffers
CVector<double> vecdData ( SYSTEM_BLOCK_FRAME_SAMPLES );
vecChanID.Init ( 0 );
vecvecdData.Init ( 0 );
vecvecdGains.Init ( 0 );
// make put and get calls thread safe. Do not forget to unlock mutex
// afterwards!
Mutex.lock();
{
// check all possible channels
for ( i = 0; i < USED_NUM_CHANNELS; i++ )
{
// read out all input buffers to decrease timeout counter on
// disconnected channels
// const EGetDataStat eGetStat = vecChannels[i].GetData ( vecdData );
const EGetDataStat eGetStat=GS_BUFFER_OK;//TEST
// if channel was just disconnected, set flag that connected
// client list is sent to all other clients
if ( eGetStat == GS_CHAN_NOW_DISCONNECTED )
{
bChannelIsNowDisconnected = true;
}
if ( vecChannels[i].IsConnected() )
{
// add ID and data
vecChanID.Add ( i );
const int iOldSize = vecvecdData.Size();
vecvecdData.Enlarge ( 1 );
vecvecdData[iOldSize].Init ( vecdData.Size() );
vecvecdData[iOldSize] = vecdData;
// send message for get status (for GUI)
if ( eGetStat == GS_BUFFER_OK )
{
PostWinMessage ( MS_JIT_BUF_GET, MUL_COL_LED_GREEN, i );
}
else
{
PostWinMessage ( MS_JIT_BUF_GET, MUL_COL_LED_RED, i );
}
}
}
// now that we know the IDs of the connected clients, get gains
const int iNumCurConnChan = vecChanID.Size();
vecvecdGains.Init ( iNumCurConnChan );
for ( i = 0; i < iNumCurConnChan; i++ )
{
vecvecdGains[i].Init ( iNumCurConnChan );
for ( j = 0; j < iNumCurConnChan; j++ )
{
// The second index of "vecvecdGains" does not represent
// the channel ID! Therefore we have to use "vecChanID" to
// query the IDs of the currently connected channels
vecvecdGains[i][j] =
vecChannels[vecChanID[i]].GetGain( vecChanID[j] );
}
}
// a channel is now disconnected, take action on it
if ( bChannelIsNowDisconnected )
{
// update channel list for all currently connected clients
CreateAndSendChanListForAllConChannels();
}
}
Mutex.unlock(); // release mutex
}
CVector<CChannelShortInfo> CServer::CreateChannelList()
{
CVector<CChannelShortInfo> vecChanInfo ( 0 );
// look for free channels
for ( int i = 0; i < USED_NUM_CHANNELS; i++ )
{
if ( vecChannels[i].IsConnected() )
{
// append channel ID, IP address and channel name to storing vectors
vecChanInfo.Add ( CChannelShortInfo (
i, // ID
vecChannels[i].GetAddress().InetAddr.toIPv4Address(), // IP address
vecChannels[i].GetName() /* name */ ) );
}
}
return vecChanInfo;
}
void CServer::CreateAndSendChanListForAllConChannels()
{
// create channel list
CVector<CChannelShortInfo> vecChanInfo ( CreateChannelList() );
// now send connected channels list to all connected clients
for ( int i = 0; i < USED_NUM_CHANNELS; i++ )
{
if ( vecChannels[i].IsConnected() )
{
// send message
vecChannels[i].CreateConClientListMes ( vecChanInfo );
}
}
// create status HTML file if enabled
if ( bWriteStatusHTMLFile )
{
WriteHTMLChannelList();
}
}
void CServer::CreateAndSendChanListForAllExceptThisChan ( const int iCurChanID )
{
// create channel list
CVector<CChannelShortInfo> vecChanInfo ( CreateChannelList() );
// now send connected channels list to all connected clients except for
// the channel with the ID "iCurChanID"
for ( int i = 0; i < USED_NUM_CHANNELS; i++ )
{
if ( ( vecChannels[i].IsConnected() ) && ( i != iCurChanID ) )
{
// send message
vecChannels[i].CreateConClientListMes ( vecChanInfo );
}
}
// create status HTML file if enabled
if ( bWriteStatusHTMLFile )
{
WriteHTMLChannelList();
}
}
void CServer::CreateAndSendChanListForThisChan ( const int iCurChanID )
{
// create channel list
CVector<CChannelShortInfo> vecChanInfo ( CreateChannelList() );
// now send connected channels list to the channel with the ID "iCurChanID"
vecChannels[iCurChanID].CreateConClientListMes ( vecChanInfo );
}
void CServer::CreateAndSendChatTextForAllConChannels ( const int iCurChanID,
const QString& strChatText )
{
// create message which is sent to all connected clients -------------------
// get client name, if name is empty, use IP address instead
QString ChanName = vecChannels[iCurChanID].GetName();
if ( ChanName.isEmpty() )
{
// convert IP address to text and show it
ChanName =
vecChannels[iCurChanID].GetAddress().GetIpAddressStringNoLastByte();
}
// add name of the client at the beginning of the message text and use
// different colors, to get correct HTML, the "<" and ">" signs must be
// replaced by "&#60;" and "&#62;"
QString sCurColor = vstrChatColors[iCurChanID % vstrChatColors.Size()];
const QString strActualMessageText =
"<font color=""" + sCurColor + """><b>&#60;" + ChanName +
"&#62;</b></font> " + strChatText;
// send chat text to all connected clients ---------------------------------
for ( int i = 0; i < USED_NUM_CHANNELS; i++ )
{
if ( vecChannels[i].IsConnected() )
{
// send message
vecChannels[i].CreateChatTextMes ( strActualMessageText );
}
}
}
int CServer::GetFreeChan()
{
// look for a free channel
for ( int i = 0; i < USED_NUM_CHANNELS; i++ )
{
if ( !vecChannels[i].IsConnected() )
{
return i;
}
}
// no free channel found, return invalid ID
return INVALID_CHANNEL_ID;
}
int CServer::CheckAddr ( const CHostAddress& Addr )
{
CHostAddress InetAddr;
// check for all possible channels if IP is already in use
for ( int i = 0; i < USED_NUM_CHANNELS; i++ )
{
if ( vecChannels[i].IsConnected() )
{
if ( vecChannels[i].GetAddress ( InetAddr ) )
{
// IP found, return channel number
if ( InetAddr == Addr )
{
return i;
}
}
}
}
// IP not found, return invalid ID
return INVALID_CHANNEL_ID;
}
bool CServer::PutData ( const CVector<uint8_t>& vecbyRecBuf,
const int iNumBytesRead,
const CHostAddress& HostAdr )
{
bool bAudioOK = false;
bool bNewChannelReserved = false;
Mutex.lock();
{
bool bChanOK = true;
// Get channel ID ------------------------------------------------------
// check address
int iCurChanID = CheckAddr ( HostAdr );
if ( iCurChanID == INVALID_CHANNEL_ID )
{
// a new client is calling, look for free channel
iCurChanID = GetFreeChan();
if ( iCurChanID != INVALID_CHANNEL_ID )
{
// initialize current channel by storing the calling host
// address
vecChannels[iCurChanID].SetAddress ( HostAdr );
// reset the channel gains of current channel, at the same
// time reset gains of this channel ID for all other channels
for ( int i = 0; i < USED_NUM_CHANNELS; i++ )
{
vecChannels[iCurChanID].SetGain ( i, (double) 1.0 );
// other channels (we do not distinguish the case if
// i == iCurChanID for simplicity)
vecChannels[i].SetGain ( iCurChanID, (double) 1.0 );
}
// set flag for new reserved channel
bNewChannelReserved = true;
}
else
{
// no free channel available
bChanOK = false;
// create and send "server full" message
// TODO problem: if channel is not officially connected, we cannot send messages
}
}
// Put received data in jitter buffer ----------------------------------
if ( bChanOK )
{
// put packet in socket buffer
switch ( vecChannels[iCurChanID].PutData ( vecbyRecBuf, iNumBytesRead ) )
{
case PS_AUDIO_OK:
PostWinMessage ( MS_JIT_BUF_PUT, MUL_COL_LED_GREEN, iCurChanID );
bAudioOK = true; // in case we have an audio packet, return true
break;
case PS_AUDIO_ERR:
PostWinMessage ( MS_JIT_BUF_PUT, MUL_COL_LED_RED, iCurChanID );
bAudioOK = true; // in case we have an audio packet, return true
break;
case PS_PROT_ERR:
PostWinMessage ( MS_JIT_BUF_PUT, MUL_COL_LED_YELLOW, iCurChanID );
// TEST
bAudioOK = true;
break;
}
}
// after data is put in channel buffer, create channel list message if
// requested
if ( bNewChannelReserved && bAudioOK )
{
// logging of new connected channel
Logging.AddNewConnection ( HostAdr.InetAddr );
// A new client connected to the server, create and
// send all clients the updated channel list (the list has to
// be created after the received data has to be put to the
// channel first so that this channel is marked as connected)
//
// connected clients list is only send for new connected clients after
// request, only the already connected clients get the list
// automatically, because they don't know when new clients connect
CreateAndSendChanListForAllExceptThisChan ( iCurChanID );
}
}
Mutex.unlock();
return bAudioOK;
}
void CServer::GetConCliParam ( CVector<CHostAddress>& vecHostAddresses,
CVector<QString>& vecsName,
CVector<int>& veciJitBufSize,
CVector<int>& veciNetwFrameSizeFact )
{
CHostAddress InetAddr;
// init return values
vecHostAddresses.Init ( USED_NUM_CHANNELS );
vecsName.Init ( USED_NUM_CHANNELS );
veciJitBufSize.Init ( USED_NUM_CHANNELS );
veciNetwFrameSizeFact.Init ( USED_NUM_CHANNELS );
// check all possible channels
for ( int i = 0; i < USED_NUM_CHANNELS; i++ )
{
if ( vecChannels[i].GetAddress ( InetAddr ) )
{
// get requested data
vecHostAddresses[i] = InetAddr;
vecsName[i] = vecChannels[i].GetName();
veciJitBufSize[i] = vecChannels[i].GetSockBufSize();
veciNetwFrameSizeFact[i] = vecChannels[i].GetNetwFrameSizeFact();
}
}
}
void CServer::StartStatusHTMLFileWriting ( const QString& strNewFileName,
const QString& strNewServerNameWithPort )
{
// set important parameters
strServerHTMLFileListName = strNewFileName;
strServerNameWithPort = strNewServerNameWithPort;
// set flag
bWriteStatusHTMLFile = true;
// write initial file
WriteHTMLChannelList();
}
void CServer::WriteHTMLChannelList()
{
// create channel list
CVector<CChannelShortInfo> vecChanInfo ( CreateChannelList() );
// prepare file and stream
QFile serverFileListFile ( strServerHTMLFileListName );
if ( !serverFileListFile.open ( QIODevice::WriteOnly | QIODevice::Text ) )
{
return;
}
QTextStream streamFileOut ( &serverFileListFile );
streamFileOut << strServerNameWithPort << endl << "<ul>" << endl;
// get the number of connected clients
int iNumConnClients = 0;
for ( int i = 0; i < USED_NUM_CHANNELS; i++ )
{
if ( vecChannels[i].IsConnected() )
{
iNumConnClients++;
}
}
// depending on number of connected clients write list
if ( iNumConnClients == 0 )
{
// no clients are connected -> empty server
streamFileOut << " No client connected" << endl;
}
else
{
// write entry for each connected client
for ( int i = 0; i < USED_NUM_CHANNELS; i++ )
{
if ( vecChannels[i].IsConnected() )
{
QString strCurChanName = vecChannels[i].GetName();
// if text is empty, show IP address instead
if ( strCurChanName.isEmpty() )
{
// convert IP address to text and show it, remove last
// digits
strCurChanName =
vecChannels[i].GetAddress().GetIpAddressStringNoLastByte();
}
streamFileOut << " <li>" << strCurChanName << "</li>" << endl;
}
}
}
// finish list
streamFileOut << "</ul>" << endl;
}
CVector<short> CServer::ProcessData ( CVector<CVector<double> >& vecvecdData,
CVector<double>& vecdGains )
{
int i;
// init return vector with zeros since we mix all channels on that vector
CVector<short> vecsOutData ( SYSTEM_BLOCK_FRAME_SAMPLES, 0 );
const int iNumClients = vecvecdData.Size();
// mix all audio data from all clients together
for ( int j = 0; j < iNumClients; j++ )
{
// if channel gain is 1, avoid multiplication for speed optimization
if ( vecdGains[j] == static_cast<double> ( 1.0 ) )
{
for ( i = 0; i < SYSTEM_BLOCK_FRAME_SAMPLES; i++ )
{
vecsOutData[i] =
Double2Short ( vecsOutData[i] + vecvecdData[j][i] );
}
}
else
{
for ( i = 0; i < SYSTEM_BLOCK_FRAME_SAMPLES; i++ )
{
vecsOutData[i] =
Double2Short ( vecsOutData[i] +
vecvecdData[j][i] * vecdGains[j] );
}
}
}
return vecsOutData;
}
bool CServer::GetTimingStdDev ( double& dCurTiStdDev )
{
dCurTiStdDev = 0.0; // init return value
// only return value if server is active and the actual measurement is
// updated
if ( IsRunning() )
{
// return the standard deviation
dCurTiStdDev = CycleTimeVariance.GetStdDev();
return true;
}
else
{
return false;
}
}
void CServer::customEvent ( QEvent* Event )
{
if ( Event->type() == QEvent::User + 11 )
{
const int iMessType = ( ( CLlconEvent* ) Event )->iMessType;
switch ( iMessType )
{
case MS_PACKET_RECEIVED:
// wake up the server if a packet was received
// if the server is still running, the call to Start() will have
// no effect
Start();
break;
}
}
}
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