added new protocol messages for network transport properties; removed unnecessary protocol events

src/channel.cpp

@@ -858,9 +858,6 @@ EPutDataStat CChannel::PutData ( const CVector<unsigned char>& vecbyData,
                 // set status flags
                 eRet              = PS_PROT_OK;
                 bIsProtocolPacket = true;
-
-                // create message for protocol status
-                emit ProtocolStatus ( true );
             }
         }
 
@@ -941,9 +938,6 @@ EPutDataStat CChannel::PutData ( const CVector<unsigned char>& vecbyData,
                 // the protocol parsing failed and this was no audio block,
                 // we treat this as protocol error (unkown packet)
                 eRet = PS_PROT_ERR;
-
-                // create message for protocol status
-                emit ProtocolStatus ( false );
             }
         }
 

src/channel.h

@@ -208,7 +208,6 @@ signals:
     void ReqJittBufSize();
     void ReqConnClientsList();
     void ConClientListMesReceived ( CVector<CChannelShortInfo> vecChanInfo );
-    void ProtocolStatus ( bool bOk );
     void NameHasChanged();
     void ChatTextReceived ( QString strChatText );
     void PingReceived ( int iMs );

src/client.cpp

@@ -47,9 +47,6 @@ CClient::CClient ( const quint16 iPortNumber ) :
     QObject::connect ( &Channel, SIGNAL ( ReqJittBufSize() ),
         this, SLOT ( OnReqJittBufSize() ) );
 
-    QObject::connect ( &Channel, SIGNAL ( ProtocolStatus ( bool ) ),
-        this, SLOT ( OnProtocolStatus ( bool ) ) );
-
     QObject::connect ( &Channel,
         SIGNAL ( ConClientListMesReceived ( CVector<CChannelShortInfo> ) ),
         SIGNAL ( ConClientListMesReceived ( CVector<CChannelShortInfo> ) ) );
@@ -157,19 +154,6 @@ bool CClient::SetServerAddr ( QString strNAddr )
     return true;
 }
 
-void CClient::OnProtocolStatus ( bool bOk )
-{
-    // show protocol status in GUI
-    if ( bOk )
-    {
-        PostWinMessage ( MS_PROTOCOL, MUL_COL_LED_RED );
-    }
-    else
-    {
-        PostWinMessage ( MS_PROTOCOL, MUL_COL_LED_GREEN );
-    }
-}
-
 void CClient::Start()
 {
     // init object

src/client.h

@@ -201,7 +201,6 @@ protected:
 public slots:
     void OnSendProtMessage ( CVector<uint8_t> vecMessage );
     void OnReqJittBufSize();
-    void OnProtocolStatus ( bool bOk );
     void OnNewConnection();
     void OnReceivePingMessage ( int iMs );
 

src/global.h

@@ -93,6 +93,8 @@
 // if you want to change this paramter, there has to be done code modifications
 // on other places, too! The code tag "MAX_NUM_CHANNELS_TAG" shows these places
 // (just search for the tag in the entire code)
+// note: since in the protocol messages the channel ID is only a byte, a
+// maximum of 8 channels are possible, see e.g. "PROTMESSID_CHANNEL_GAIN"!
 #define MAX_NUM_CHANNELS                6 // max number channels for server
 
 // length of the moving average buffer for response time measurement
@@ -130,9 +132,8 @@ typedef unsigned int                    _MESSAGE_IDENT;
 #define MS_JIT_BUF_PUT                  3
 #define MS_JIT_BUF_GET                  4
 #define MS_PACKET_RECEIVED              5
-#define MS_PROTOCOL                     6
+#define MS_ERROR_IN_THREAD              6
-#define MS_ERROR_IN_THREAD              7
+#define MS_SET_JIT_BUF_SIZE             7
-#define MS_SET_JIT_BUF_SIZE             8
 
 #define MUL_COL_LED_RED                 0
 #define MUL_COL_LED_YELLOW              1

src/protocol.cpp

@@ -104,6 +104,27 @@ MESSAGES
     | 4 bytes transmit time in ms |
     +-----------------------------+
 
+- Properties for network transport:           PROTMESSID_NETW_TRANSPORT_PROPS
+
+    +-------------------+------------------+-----------------+------------------+-----------------------+----------------------+
+    | 4 bytes netw size | 4 bytes aud size | 1 byte num chan | 4 bytes sam rate | 2 bytes audiocod type | 4 bytes audiocod arg | 
+    +-------------------+------------------+-----------------+------------------+-----------------------+----------------------+
+
+    - "netw size":     length of the network packet in bytes
+    - "aud size":      length of the mono audio block size in samples
+    - "num chan":      number of channels of the audio signal, e.g. "2" is stereo
+    - "sam rate":      sample rate of the audio stream
+    - "audiocod type": audio coding type, the following types are supported:
+                        - 0: none, no audio coding applied
+                        - 1: IMA-ADPCM
+                        - 2: MS-ADPCM
+    - "audiocod arg":  argument for the audio coder, if not used this value shall be set to 0
+
+- Request properties for network transport:   PROTMESSID_REQ_NETW_TRANSPORT_PROPS
+
+    note: does not have any data -> n = 0
+
+
  ******************************************************************************
  *
  * This program is free software; you can redistribute it and/or modify it under
@@ -369,6 +390,16 @@ for ( int i = 0; i < iNumBytes; i++ ) {
 
                     bRet = EvaluatePingMes ( vecData );
                     break;
+
+                case PROTMESSID_NETW_TRANSPORT_PROPS:
+
+                    bRet = EvaluateNetwTranspPropsMes ( vecData );
+                    break;
+
+                case PROTMESSID_REQ_NETW_TRANSPORT_PROPS:
+
+                    bRet = EvaluateReqNetwTranspPropsMes ( vecData );
+                    break;
                 }
 
                 // send acknowledge message
@@ -691,7 +722,7 @@ void CProtocol::CreateChatTextMes ( const QString strChatText )
     unsigned int  iPos = 0; // init position pointer
     const int     iStrLen = strChatText.size(); // get string size
 
-    // size of current list entry
+    // size of message body
     const int iEntrLen = 2 /* string size */ + iStrLen;
 
     // build data vector
@@ -774,6 +805,109 @@ bool CProtocol::EvaluatePingMes ( const CVector<uint8_t>& vecData )
     return false; // no error
 }
 
+void CProtocol::CreateNetwTranspPropsMes ( const CNetworkTransportProps& NetTrProps )
+{
+    unsigned int  iPos = 0; // init position pointer
+
+    // size of current message body
+    const int iEntrLen = 4 /* netw size */ + 4 /* aud size */ + 1 /* num chan */ +
+        4 /* sam rate */ + 2 /* audiocod type */ + 4 /* audiocod arg */;
+
+    // build data vector
+    CVector<uint8_t> vecData ( iEntrLen );
+
+    // length of the network packet in bytes (4 bytes)
+    PutValOnStream ( vecData, iPos,
+        static_cast<uint32_t> ( NetTrProps.iNetworkPacketSize ), 4 );
+
+    // length of the mono audio block size in samples (4 bytes)
+    PutValOnStream ( vecData, iPos,
+        static_cast<uint32_t> ( NetTrProps.iMonoAudioBlockSize ), 4 );
+
+    // number of channels of the audio signal, e.g. "2" is stereo (1 byte)
+    PutValOnStream ( vecData, iPos,
+        static_cast<uint32_t> ( NetTrProps.iNumAudioChannels ), 1 );
+
+    // sample rate of the audio stream (4 bytes)
+    PutValOnStream ( vecData, iPos,
+        static_cast<uint32_t> ( NetTrProps.iSampleRate ), 4 );
+
+    // audio coding type (2 bytes)
+    PutValOnStream ( vecData, iPos,
+        static_cast<uint32_t> ( NetTrProps.eAudioCodingType ), 2 );
+
+    // argument for the audio coder (4 bytes)
+    PutValOnStream ( vecData, iPos,
+        static_cast<uint32_t> ( NetTrProps.iAudioCodingArg ), 4 );
+
+    CreateAndSendMessage ( PROTMESSID_NETW_TRANSPORT_PROPS, vecData );
+}
+
+bool CProtocol::EvaluateNetwTranspPropsMes ( const CVector<uint8_t>& vecData )
+{
+    unsigned int           iPos = 0; // init position pointer
+    CNetworkTransportProps ReceivedNetwTranspProps;
+
+    // size of current message body
+    const int iEntrLen = 4 /* netw size */ + 4 /* aud size */ + 1 /* num chan */ +
+        4 /* sam rate */ + 2 /* audiocod type */ + 4 /* audiocod arg */;
+
+    // check size
+    if ( vecData.Size() != iEntrLen )
+    {
+        return true;
+    }
+
+    // length of the network packet in bytes (4 bytes)
+    ReceivedNetwTranspProps.iNetworkPacketSize =
+        static_cast<unsigned int> ( GetValFromStream ( vecData, iPos, 4 ) );
+
+    // length of the mono audio block size in samples (4 bytes)
+    ReceivedNetwTranspProps.iMonoAudioBlockSize =
+        static_cast<unsigned int> ( GetValFromStream ( vecData, iPos, 4 ) );
+
+    // number of channels of the audio signal, e.g. "2" is stereo (1 byte)
+    ReceivedNetwTranspProps.iNumAudioChannels =
+        static_cast<unsigned int> ( GetValFromStream ( vecData, iPos, 1 ) );
+
+    // sample rate of the audio stream (4 bytes)
+    ReceivedNetwTranspProps.iSampleRate =
+        static_cast<unsigned int> ( GetValFromStream ( vecData, iPos, 4 ) );
+
+    // audio coding type (2 bytes) with error check
+    const int iRecCodingType =
+        static_cast<unsigned short> ( GetValFromStream ( vecData, iPos, 2 ) );
+
+    if ( ( iRecCodingType != CNetworkTransportProps::ACT_NONE ) &&
+         ( iRecCodingType != CNetworkTransportProps::ACT_IMA_ADPCM ) &&
+         ( iRecCodingType != CNetworkTransportProps::ACT_MS_ADPCM ) )
+    {
+        return true;
+    }
+
+    // argument for the audio coder (4 bytes)
+    ReceivedNetwTranspProps.iAudioCodingArg =
+        static_cast<unsigned int> ( GetValFromStream ( vecData, iPos, 4 ) );
+
+    // invoke message action
+    emit NetTranspPropsReceived ( ReceivedNetwTranspProps );
+
+    return false; // no error
+}
+
+void CProtocol::CreateReqNetwTranspPropsMes()
+{
+    CreateAndSendMessage ( PROTMESSID_REQ_NETW_TRANSPORT_PROPS, CVector<uint8_t> ( 0 ) );
+}
+
+bool CProtocol::EvaluateReqNetwTranspPropsMes ( const CVector<uint8_t>& vecData )
+{
+    // invoke message action
+    emit ReqNetTranspProps();
+
+    return false; // no error
+}
+
 
 
 /******************************************************************************\

src/protocol.h

@@ -49,6 +49,8 @@
 #define PROTMESSID_CHANNEL_NAME               18 // set channel name for fader tag
 #define PROTMESSID_CHAT_TEXT                  19 // contains a chat text
 #define PROTMESSID_PING_MS                    20 // for measuring ping time
+#define PROTMESSID_NETW_TRANSPORT_PROPS       21 // properties for network transport
+#define PROTMESSID_REQ_NETW_TRANSPORT_PROPS   22 // request properties for network transport
 
 // lengths of message as defined in protocol.cpp file
 #define MESS_HEADER_LENGTH_BYTE         7 // TAG (2), ID (2), cnt (1), length (2)
@@ -68,15 +70,16 @@ public:
 
     void CreateJitBufMes ( const int iJitBufSize );
     void CreateReqJitBufMes();
-    void CreateReqConnClientsList();
-    void CreateServerFullMes();
     void CreateNetwBlSiFactMes ( const int iNetwBlSiFact );
     void CreateChanGainMes ( const int iChanID, const double dGain );
+    void CreateConClientListMes ( const CVector<CChannelShortInfo>& vecChanInfo );
+    void CreateServerFullMes();
+    void CreateReqConnClientsList();
     void CreateChanNameMes ( const QString strName );
     void CreateChatTextMes ( const QString strChatText );
     void CreatePingMes ( const int iMs );
-
+    void CreateNetwTranspPropsMes ( const CNetworkTransportProps& NetTrProps );
-    void CreateConClientListMes ( const CVector<CChannelShortInfo>& vecChanInfo );
+    void CreateReqNetwTranspPropsMes();
 
     void CreateAndSendAcknMess ( const int& iID, const int& iCnt );
 
@@ -138,14 +141,16 @@ protected:
 
     bool EvaluateJitBufMes             ( const CVector<uint8_t>& vecData );
     bool EvaluateReqJitBufMes          ( const CVector<uint8_t>& vecData );
-    bool EvaluateReqConnClientsList ( const CVector<uint8_t>& vecData );
-    bool EvaluateServerFullMes      ( const CVector<uint8_t>& vecData );
     bool EvaluateNetwBlSiFactMes       ( const CVector<uint8_t>& vecData );
     bool EvaluateChanGainMes           ( const CVector<uint8_t>& vecData );
+    bool EvaluateConClientListMes      ( const CVector<uint8_t>& vecData );
+    bool EvaluateServerFullMes         ( const CVector<uint8_t>& vecData );
+    bool EvaluateReqConnClientsList    ( const CVector<uint8_t>& vecData );
     bool EvaluateChanNameMes           ( const CVector<uint8_t>& vecData );
     bool EvaluateChatTextMes           ( const CVector<uint8_t>& vecData );
-    bool EvaluateConClientListMes   ( const CVector<uint8_t>& vecData );
     bool EvaluatePingMes               ( const CVector<uint8_t>& vecData );
+    bool EvaluateNetwTranspPropsMes    ( const CVector<uint8_t>& vecData );
+    bool EvaluateReqNetwTranspPropsMes ( const CVector<uint8_t>& vecData );
 
     int                     iOldRecID, iOldRecCnt;
 
@@ -165,15 +170,17 @@ signals:
 
     // receiving
     void ChangeJittBufSize ( int iNewJitBufSize );
+    void ReqJittBufSize();
     void ChangeNetwBlSiFact ( int iNewNetwBlSiFact );
     void ChangeChanGain ( int iChanID, double dNewGain );
+    void ConClientListMesReceived ( CVector<CChannelShortInfo> vecChanInfo );
+    void ServerFull();
+    void ReqConnClientsList();
     void ChangeChanName ( QString strName );
     void ChatTextReceived ( QString strChatText );
     void PingReceived ( int iMs );
-    void ConClientListMesReceived ( CVector<CChannelShortInfo> vecChanInfo );
+    void NetTranspPropsReceived ( CNetworkTransportProps NetworkTransportProps );
-    void ReqJittBufSize();
+    void ReqNetTranspProps();
-    void ReqConnClientsList();
-    void ServerFull();
 };
 
 #endif /* !defined ( PROTOCOL_H__3B123453_4344_BB2392354455IUHF1912__INCLUDED_ ) */

src/util.h

@@ -407,6 +407,35 @@ public:
     QString strName;
 };
 
+class CNetworkTransportProps
+{
+public:
+    enum EAudioCodingType
+    {
+        ACT_NONE      = 0,
+        ACT_IMA_ADPCM = 1,
+        ACT_MS_ADPCM  = 2
+    };
+
+    CNetworkTransportProps() : iNetworkPacketSize ( 0 ), iMonoAudioBlockSize ( 0 ),
+        iNumAudioChannels ( 0 ), iSampleRate ( 0 ),
+        eAudioCodingType ( ACT_NONE ), iAudioCodingArg ( 0 ) {}
+
+    CNetworkTransportProps ( const unsigned int iNNPS, const unsigned int iNMABS,
+        const unsigned int iNNACH, const unsigned int iNSR,
+        const EAudioCodingType eNACT, const int iNACA ) :
+        iNetworkPacketSize ( iNNPS ), iMonoAudioBlockSize ( iNMABS ),
+        iNumAudioChannels ( iNNACH ), iSampleRate ( iNSR ), eAudioCodingType ( eNACT ),
+        iAudioCodingArg ( iNACA ) {}
+
+    unsigned int iNetworkPacketSize;
+    unsigned int iMonoAudioBlockSize;
+    unsigned int iNumAudioChannels;
+    unsigned int iSampleRate;
+    EAudioCodingType eAudioCodingType;
+    int iAudioCodingArg;
+};
+
 
 // Audio Reverbration ----------------------------------------------------------
 class CAudioReverb