Add NET_SYNCHING flag.

common/JackAudioAdapterInterface.cpp

@@ -293,8 +293,9 @@ namespace Jack
     int JackAudioAdapterInterface::PullAndPush(float** inputBuffer, float** outputBuffer, unsigned int frames)
     {
         fPullAndPushTime = GetMicroSeconds();
-        if (!fRunning)
+        if (!fRunning) {
             return 0;
+        }
 
         int res = 0;
 

common/JackNetAPI.cpp

@@ -418,7 +418,7 @@ struct JackNetExtMaster : public JackNetMasterInterface {
             int res = SyncRecv();
             switch (res) {
             
-                case 0:
+                case NET_SYNCHING:
                 case SOCKET_ERROR:
                     return res;
                     

common/JackNetInterface.cpp

@@ -494,7 +494,7 @@ namespace Jack
 
         if (fCurrentCycleOffset < fMaxCycleOffset && !fSynched) {
             jack_info("Synching with latency = %d", fCurrentCycleOffset);
-            return 0;
+            return NET_SYNCHING;
         } else {
             if (fCurrentCycleOffset == fMaxCycleOffset) {
                 // when the sync offset is reached 

common/JackNetManager.cpp

@@ -520,7 +520,7 @@ namespace Jack
         int res = SyncRecv();
         switch (res) {
         
-            case 0:
+            case NET_SYNCHING:
             case SOCKET_ERROR:
                 return res;
                 

common/JackNetTool.h

@@ -41,6 +41,7 @@ using namespace std;
 #define MASTER_PROTOCOL  6
 #define SLAVE_PROTOCOL   6
 
+#define NET_SYNCHING      0
 #define NET_PACKET_ERROR -2
 
 #define OPTIMIZED_PROTOCOL 1