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- speed optimizations (removed some memory allocations in the processing routine)

Browse source 
- removed duplicate function
- clean up some code
This commit is contained in:
Volker Fischer 2014-01-08 21:24:37 +00:00
parent d98ac1b2af
commit 33afb04f3f
2 changed files with 138 additions and 135 deletions
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254
src/server.cpp
View file

@ -197,7 +197,7 @@ void CHighPrecisionTimer::run()
// CServer implementation ******************************************************
CServer::CServer ( const int iNewNumChan,
CServer::CServer ( const int iNewMaxNumChan,
const QString& strLoggingFileName,
const quint16 iPortNumber,
const QString& strHTMLStatusFileName,
@ -207,13 +207,13 @@ CServer::CServer ( const int iNewNumChan,
const QString& strServerInfo,
const QString& strNewWelcomeMessage,
const bool bNCentServPingServerInList ) :
iNumChannels ( iNewNumChan ),
iMaxNumChannels ( iNewMaxNumChan ),
Socket ( this, iPortNumber ),
bWriteStatusHTMLFile ( false ),
ServerListManager ( iPortNumber,
strCentralServer,
strServerInfo,
iNewNumChan,
iNewMaxNumChan,
bNCentServPingServerInList,
&ConnLessProtocol ),
bAutoRunMinimized ( false ),
@ -225,7 +225,7 @@ CServer::CServer ( const int iNewNumChan,
// create CELT encoder/decoder for each channel (must be done before
// enabling the channels), create a mono and stereo encoder/decoder
// for each channel
for ( i = 0; i < iNumChannels; i++ )
for ( i = 0; i < iMaxNumChannels; i++ )
{
// init audio endocder/decoder (mono)
CeltModeMono[i] = cc6_celt_mode_create (
@ -311,6 +311,11 @@ CServer::CServer ( const int iNewNumChan,
vstrChatColors[4] = "maroon";
vstrChatColors[5] = "coral";
// allocate memory for the channel IDs vector for the current connected
// channels where we assume the worst case that all possible channels are
// used
vecChanIDsCurConChan.Init ( iMaxNumChannels );
// enable history graph (if requested)
if ( !strHistoryFileName.isEmpty() )
{
@ -351,7 +356,7 @@ CServer::CServer ( const int iNewNumChan,
// enable all channels (for the server all channel must be enabled the
// entire life time of the software)
for ( i = 0; i < iNumChannels; i++ )
for ( i = 0; i < iMaxNumChannels; i++ )
{
vecChannels[i].SetEnable ( true );
}
@ -641,12 +646,15 @@ void CServer::OnTimer()
{
int i, j;
CVector<int> vecChanID;
CVector<CVector<double> > vecvecdGains;
CVector<CVector<int16_t> > vecvecsData;
CVector<int> vecNumAudioChannels;
// TODO avoid allocating memory in the time critical processing routine
CVector<CVector<double> > vecvecdGains;
CVector<CVector<int16_t> > vecvecsData;
CVector<int> vecNumAudioChannels;
// Get data from all connected clients -------------------------------------
// some inits
int iNumClients = 0; // init connected client counter
bool bChannelIsNowDisconnected = false;
// Make put and get calls thread safe. Do not forget to unlock mutex
@ -654,28 +662,36 @@ void CServer::OnTimer()
Mutex.lock();
{
// first, get number and IDs of connected channels
vecChanID.Init ( 0 );
for ( i = 0; i < iNumChannels; i++ )
for ( i = 0; i < iMaxNumChannels; i++ )
{
if ( vecChannels[i].IsConnected() )
{
// add ID and data
vecChanID.Add ( i );
// add ID and increment counter (note that the vector length is
// according to the worst case scenario, if the number of
// connected clients is less, only a subset of elements of this
// vector are actually used and the others are dummy elements)
vecChanIDsCurConChan[iNumClients] = i;
iNumClients++;
}
}
// process connected channels
const int iNumCurConnChan = vecChanID.Size();
// init temporary vectors
vecvecdGains.Init ( iNumCurConnChan );
vecvecsData.Init ( iNumCurConnChan );
vecNumAudioChannels.Init ( iNumCurConnChan );
for ( i = 0; i < iNumCurConnChan; i++ )
// TODO in the entire realtime timer routine including the ProcessData no
// memory must be allocated -> use member variables for the vectors and
// only change the size on changing the number of connected clients at
// the server
// TODO avoid allocating memory in the time critical processing routine
vecvecdGains.Init ( iNumClients );
vecvecsData.Init ( iNumClients );
vecNumAudioChannels.Init ( iNumClients );
// process connected channels
for ( i = 0; i < iNumClients; i++ )
{
// get actual ID of current channel
const int iCurChanID = vecChanID[i];
const int iCurChanID = vecChanIDsCurConChan[i];
// get and store number of audio channels
const int iCurNumAudChan =
@ -684,17 +700,18 @@ void CServer::OnTimer()
vecNumAudioChannels[i] = iCurNumAudChan;
// init vectors storing information of all channels
vecvecdGains[i].Init ( iNumCurConnChan );
vecvecdGains[i].Init ( iNumClients );
vecvecsData[i].Init ( iCurNumAudChan * SYSTEM_FRAME_SIZE_SAMPLES );
// get gains of all connected channels
for ( j = 0; j < iNumCurConnChan; j++ )
for ( j = 0; j < iNumClients; 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
// the channel ID! Therefore we have to use
// "vecChanIDsCurConChan" to query the IDs of the currently
// connected channels
vecvecdGains[i][j] =
vecChannels[iCurChanID].GetGain( vecChanID[j] );
vecChannels[iCurChanID].GetGain( vecChanIDsCurConChan[j] );
}
// get current number of CELT coded bytes
@ -702,7 +719,8 @@ void CServer::OnTimer()
vecChannels[iCurChanID].GetNetwFrameSize();
// init temporal data vector and clear input buffers
CVector<uint8_t> vecbyData ( iCeltNumCodedBytes );
// TODO avoid allocating memory in the time critical processing routine
CVector<uint8_t> vecbyData ( iCeltNumCodedBytes );
// get data
const EGetDataStat eGetStat =
@ -816,8 +834,6 @@ void CServer::OnTimer()
// Process data ------------------------------------------------------------
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 )
@ -825,21 +841,34 @@ void CServer::OnTimer()
for ( int i = 0; i < iNumClients; i++ )
{
// get actual ID of current channel
const int iCurChanID = vecChanID[i];
const int iCurChanID = vecChanIDsCurConChan[i];
// get number of audio channels of current channel
const int iCurNumAudChan = vecNumAudioChannels[i];
// calculate the number of samples for output vector
const int iNumOutSamples =
iCurNumAudChan * SYSTEM_FRAME_SIZE_SAMPLES;
// allocate memory for the send data vector
// TODO avoid allocating memory in the time critical processing routine
CVector<int16_t> vecsSendData ( iNumOutSamples );
// generate a sparate mix for each channel
// actual processing of audio data -> mix
CVector<short> vecsSendData ( ProcessData ( i,
vecvecsData,
vecvecdGains[i],
vecNumAudioChannels ) );
ProcessData ( iCurNumAudChan,
vecvecsData,
vecvecdGains[i],
vecNumAudioChannels,
vecsSendData );
// get current number of CELT coded bytes
const int iCeltNumCodedBytes =
vecChannels[iCurChanID].GetNetwFrameSize();
// CELT encoding
CVector<unsigned char> vecCeltData ( iCeltNumCodedBytes );
// TODO avoid allocating memory in the time critical processing routine
CVector<unsigned char> vecCeltData ( iCeltNumCodedBytes );
if ( vecChannels[iCurChanID].GetNumAudioChannels() == 1 )
{
@ -912,40 +941,41 @@ opus_custom_encoder_ctl ( OpusEncoderStereo[iCurChanID],
}
}
CVector<int16_t> CServer::ProcessData ( const int iCurIndex,
CVector<CVector<int16_t> >& vecvecsData,
CVector<double>& vecdGains,
CVector<int>& vecNumAudioChannels )
/// @brief Mix all audio data from all clients together.
void CServer::ProcessData ( const int iCurNumAudChan,
const CVector<CVector<int16_t> >& vecvecsData,
const CVector<double>& vecdGains,
const CVector<int>& vecNumAudioChannels,
CVector<int16_t>& vecsOutData )
{
int i, j, k;
// get number of audio channels of current channel
const int iCurNumAudChan = vecNumAudioChannels[iCurIndex];
// number of samples for output vector
const int iNumOutSamples = iCurNumAudChan * SYSTEM_FRAME_SIZE_SAMPLES;
// init return vector with zeros since we mix all channels on that vector
CVector<int16_t> vecsOutData ( iNumOutSamples, 0 );
// get the number of clients
const int iNumClients = vecvecsData.Size();
// mix all audio data from all clients together
// init return vector with zeros since we mix all channels on that vector
vecsOutData.Reset ( 0 );
// distinguish between stereo and mono mode
if ( iCurNumAudChan == 1 )
{
// Mono target channel -------------------------------------------------
for ( j = 0; j < iNumClients; j++ )
{
// get a reference to the audio data and gain of the current client
const CVector<int16_t>& vecsData = vecvecsData[j];
const double dGain = vecdGains[j];
// if channel gain is 1, avoid multiplication for speed optimization
if ( vecdGains[j] == static_cast<double> ( 1.0 ) )
if ( dGain == static_cast<double> ( 1.0 ) )
{
if ( vecNumAudioChannels[j] == 1 )
{
// mono
for ( i = 0; i < SYSTEM_FRAME_SIZE_SAMPLES; i++ )
{
vecsOutData[i] =
Double2Short ( vecsOutData[i] + vecvecsData[j][i] );
vecsOutData[i] = Double2Short (
static_cast<double> ( vecsOutData[i] ) + vecsData[i] );
}
}
else
@ -955,7 +985,7 @@ CVector<int16_t> CServer::ProcessData ( const int iCurIndex,
{
vecsOutData[i] =
Double2Short ( vecsOutData[i] +
( vecvecsData[j][k] + vecvecsData[j][k + 1] ) / 2 );
( static_cast<double> ( vecsData[k] ) + vecsData[k + 1] ) / 2 );
}
}
}
@ -966,9 +996,8 @@ CVector<int16_t> CServer::ProcessData ( const int iCurIndex,
// mono
for ( i = 0; i < SYSTEM_FRAME_SIZE_SAMPLES; i++ )
{
vecsOutData[i] =
Double2Short ( vecsOutData[i] +
vecvecsData[j][i] * vecdGains[j] );
vecsOutData[i] = Double2Short (
vecsOutData[i] + vecsData[i] * dGain );
}
}
else
@ -977,8 +1006,8 @@ CVector<int16_t> CServer::ProcessData ( const int iCurIndex,
for ( i = 0, k = 0; i < SYSTEM_FRAME_SIZE_SAMPLES; i++, k += 2 )
{
vecsOutData[i] =
Double2Short ( vecsOutData[i] + vecdGains[j] *
( vecvecsData[j][k] + vecvecsData[j][k + 1] ) / 2 );
Double2Short ( vecsOutData[i] + dGain *
( static_cast<double> ( vecsData[k] ) + vecsData[k + 1] ) / 2 );
}
}
}
@ -989,8 +1018,12 @@ CVector<int16_t> CServer::ProcessData ( const int iCurIndex,
// Stereo target channel -----------------------------------------------
for ( j = 0; j < iNumClients; j++ )
{
// get a reference to the audio data and gain of the current client
const CVector<int16_t>& vecsData = vecvecsData[j];
const double dGain = vecdGains[j];
// if channel gain is 1, avoid multiplication for speed optimization
if ( vecdGains[j] == static_cast<double> ( 1.0 ) )
if ( dGain == static_cast<double> ( 1.0 ) )
{
if ( vecNumAudioChannels[j] == 1 )
{
@ -998,21 +1031,21 @@ CVector<int16_t> CServer::ProcessData ( const int iCurIndex,
for ( i = 0, k = 0; i < SYSTEM_FRAME_SIZE_SAMPLES; i++, k += 2 )
{
// left channel
vecsOutData[k] =
Double2Short ( vecsOutData[k] + vecvecsData[j][i] );
vecsOutData[k] = Double2Short (
static_cast<double> ( vecsOutData[k] ) + vecsData[i] );
// right channel
vecsOutData[k + 1] =
Double2Short ( vecsOutData[k + 1] + vecvecsData[j][i] );
vecsOutData[k + 1] = Double2Short (
static_cast<double> ( vecsOutData[k + 1] ) + vecsData[i] );
}
}
else
{
// stereo
for ( i = 0; i < iNumOutSamples; i++ )
for ( i = 0; i < ( 2 * SYSTEM_FRAME_SIZE_SAMPLES ); i++ )
{
vecsOutData[i] =
Double2Short ( vecsOutData[i] + vecvecsData[j][i] );
vecsOutData[i] = Double2Short (
static_cast<double> ( vecsOutData[i] ) + vecsData[i] );
}
}
}
@ -1025,28 +1058,25 @@ CVector<int16_t> CServer::ProcessData ( const int iCurIndex,
{
// left channel
vecsOutData[k] = Double2Short (
vecsOutData[k] + vecvecsData[j][i] * vecdGains[j] );
vecsOutData[k] + vecsData[i] * dGain );
// right channel
vecsOutData[k + 1] = Double2Short (
vecsOutData[k + 1] + vecvecsData[j][i] * vecdGains[j] );
vecsOutData[k + 1] + vecsData[i] * dGain );
}
}
else
{
// stereo
for ( i = 0; i < iNumOutSamples; i++ )
for ( i = 0; i < ( 2 * SYSTEM_FRAME_SIZE_SAMPLES ); i++ )
{
vecsOutData[i] =
Double2Short ( vecsOutData[i] +
vecvecsData[j][i] * vecdGains[j] );
vecsOutData[i] = Double2Short (
vecsOutData[i] + vecsData[i] * dGain );
}
}
}
}
}
return vecsOutData;
}
CVector<CChannelInfo> CServer::CreateChannelList()
@ -1054,7 +1084,7 @@ CVector<CChannelInfo> CServer::CreateChannelList()
CVector<CChannelInfo> vecChanInfo ( 0 );
// look for free channels
for ( int i = 0; i < iNumChannels; i++ )
for ( int i = 0; i < iMaxNumChannels; i++ )
{
if ( vecChannels[i].IsConnected() )
{
@ -1075,7 +1105,7 @@ void CServer::CreateAndSendChanListForAllConChannels()
CVector<CChannelInfo> vecChanInfo ( CreateChannelList() );
// now send connected channels list to all connected clients
for ( int i = 0; i < iNumChannels; i++ )
for ( int i = 0; i < iMaxNumChannels; i++ )
{
if ( vecChannels[i].IsConnected() )
{
@ -1129,7 +1159,7 @@ void CServer::CreateAndSendChatTextForAllConChannels ( const int iCurChanID
// Send chat text to all connected clients ---------------------------------
for ( int i = 0; i < iNumChannels; i++ )
for ( int i = 0; i < iMaxNumChannels; i++ )
{
if ( vecChannels[i].IsConnected() )
{
@ -1142,7 +1172,7 @@ void CServer::CreateAndSendChatTextForAllConChannels ( const int iCurChanID
int CServer::GetFreeChan()
{
// look for a free channel
for ( int i = 0; i < iNumChannels; i++ )
for ( int i = 0; i < iMaxNumChannels; i++ )
{
if ( !vecChannels[i].IsConnected() )
{
@ -1154,54 +1184,38 @@ int CServer::GetFreeChan()
return INVALID_CHANNEL_ID;
}
int CServer::FindChannel ( const CHostAddress& InetAddr )
{
// look for a channel with the given internet address
for ( int i = 0; i < iNumChannels; i++ )
{
if ( vecChannels[i].GetAddress() == InetAddr )
{
return i;
}
}
// no free channel found, return invalid ID
return INVALID_CHANNEL_ID;
}
int CServer::GetNumberOfConnectedClients()
{
int iNumConnClients = 0;
// check all possible channels for connection status
for ( int i = 0; i < iNumChannels; i++ )
for ( int i = 0; i < iMaxNumChannels; i++ )
{
if ( vecChannels[i].IsConnected() )
{
// this channel is connected, increment counter
iNumConnClients += 1;
iNumConnClients++;
}
}
return iNumConnClients;
}
int CServer::CheckAddr ( const CHostAddress& Addr )
int CServer::FindChannel ( const CHostAddress& CheckAddr )
{
CHostAddress InetAddr;
// check for all possible channels if IP is already in use
for ( int i = 0; i < iNumChannels; i++ )
for ( int i = 0; i < iMaxNumChannels; i++ )
{
if ( vecChannels[i].IsConnected() )
// the "GetAddress" gives a valid address and returns true if the
// channel is connected
if ( vecChannels[i].GetAddress ( InetAddr ) )
{
if ( vecChannels[i].GetAddress ( InetAddr ) )
// IP found, return channel number
if ( InetAddr == CheckAddr )
{
// IP found, return channel number
if ( InetAddr == Addr )
{
return i;
}
return i;
}
}
}
@ -1222,7 +1236,7 @@ bool CServer::PutData ( const CVector<uint8_t>& vecbyRecBuf,
{
// Get channel ID ------------------------------------------------------
// check address
int iCurChanID = CheckAddr ( HostAdr );
int iCurChanID = FindChannel ( HostAdr );
if ( iCurChanID == INVALID_CHANNEL_ID )
{
@ -1246,7 +1260,7 @@ bool CServer::PutData ( const CVector<uint8_t>& vecbyRecBuf,
// 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 < iNumChannels; i++ )
for ( int i = 0; i < iMaxNumChannels; i++ )
{
vecChannels[iCurChanID].SetGain ( i, (double) 1.0 );
@ -1346,13 +1360,13 @@ void CServer::GetConCliParam ( CVector<CHostAddress>& vecHostAddresses,
CHostAddress InetAddr;
// init return values
vecHostAddresses.Init ( iNumChannels );
vecsName.Init ( iNumChannels );
veciJitBufNumFrames.Init ( iNumChannels );
veciNetwFrameSizeFact.Init ( iNumChannels );
vecHostAddresses.Init ( iMaxNumChannels );
vecsName.Init ( iMaxNumChannels );
veciJitBufNumFrames.Init ( iMaxNumChannels );
veciNetwFrameSizeFact.Init ( iMaxNumChannels );
// check all possible channels
for ( int i = 0; i < iNumChannels; i++ )
for ( int i = 0; i < iMaxNumChannels; i++ )
{
if ( vecChannels[i].GetAddress ( InetAddr ) )
{
@ -1381,11 +1395,9 @@ void CServer::StartStatusHTMLFileWriting ( const QString& strNewFileName,
void CServer::WriteHTMLChannelList()
{
// create channel list
CVector<CChannelInfo> vecChanInfo ( CreateChannelList() );
// prepare file and stream
QFile serverFileListFile ( strServerHTMLFileListName );
if ( !serverFileListFile.open ( QIODevice::WriteOnly | QIODevice::Text ) )
{
return;
@ -1394,18 +1406,8 @@ void CServer::WriteHTMLChannelList()
QTextStream streamFileOut ( &serverFileListFile );
streamFileOut << strServerNameWithPort << endl << "<ul>" << endl;
// get the number of connected clients
int iNumConnClients = 0;
for ( int i = 0; i < iNumChannels; i++ )
{
if ( vecChannels[i].IsConnected() )
{
iNumConnClients++;
}
}
// depending on number of connected clients write list
if ( iNumConnClients == 0 )
if ( GetNumberOfConnectedClients() == 0 )
{
// no clients are connected -> empty server
streamFileOut << " No client connected" << endl;
@ -1413,7 +1415,7 @@ void CServer::WriteHTMLChannelList()
else
{
// write entry for each connected client
for ( int i = 0; i < iNumChannels; i++ )
for ( int i = 0; i < iMaxNumChannels; i++ )
{
if ( vecChannels[i].IsConnected() )
{

19
src/server.h
View file

@ -115,7 +115,7 @@ class CServer : public QObject
Q_OBJECT
public:
CServer ( const int iNewNumChan,
CServer ( const int iNewMaxNumChan,
const QString& strLoggingFileName,
const quint16 iPortNumber,
const QString& strHTMLStatusFileName,
@ -193,9 +193,8 @@ protected:
void StartStatusHTMLFileWriting ( const QString& strNewFileName,
const QString& strNewServerNameWithPort );
int CheckAddr ( const CHostAddress& Addr );
int GetFreeChan();
int FindChannel ( const CHostAddress& InetAddr );
int FindChannel ( const CHostAddress& CheckAddr );
int GetNumberOfConnectedClients();
CVector<CChannelInfo> CreateChannelList();
void CreateAndSendChanListForAllConChannels();
@ -204,17 +203,18 @@ protected:
const QString& strChatText );
void WriteHTMLChannelList();
CVector<int16_t> ProcessData ( const int iCurIndex,
CVector<CVector<int16_t> >& vecvecsData,
CVector<double>& vecdGains,
CVector<int>& vecNumAudioChannels );
void ProcessData ( const int iCurNumAudChan,
const CVector<CVector<int16_t> >& vecvecsData,
const CVector<double>& vecdGains,
const CVector<int>& vecNumAudioChannels,
CVector<int16_t>& vecsOutData );
virtual void customEvent ( QEvent* pEvent );
virtual void customEvent ( QEvent* pEvent );
// do not use the vector class since CChannel does not have appropriate
// copy constructor/operator
CChannel vecChannels[MAX_NUM_CHANNELS];
int iNumChannels;
int iMaxNumChannels;
CProtocol ConnLessProtocol;
QMutex Mutex;
@ -232,6 +232,7 @@ protected:
OpusCustomDecoder* OpusDecoderStereo[MAX_NUM_CHANNELS];
CVector<QString> vstrChatColors;
CVector<int> vecChanIDsCurConChan;
// actual working objects
CSocket Socket;