allow switchover to new audio mixer received from audio server

interface/src/Audio.cpp

@@ -84,8 +84,13 @@ int audioCallback (const void *inputBuffer,
 //    int16_t *inputRight = ((int16_t **) inputBuffer)[1];
     
     if (inputLeft != NULL) {
-        if (data->mixerAddress != NULL) {
-             data->audioSocket->send(data->mixerAddress, data->mixerPort, (void *)inputLeft, BUFFER_LENGTH_BYTES);
+        
+        if (data->mixerAddress != 0) {
+            sockaddr_in audioMixerSocket;
+            audioMixerSocket.sin_family = AF_INET;
+            audioMixerSocket.sin_addr.s_addr = data->mixerAddress;
+            audioMixerSocket.sin_port = data->mixerPort;
+             data->audioSocket->send((sockaddr *)&audioMixerSocket, (void *)inputLeft, BUFFER_LENGTH_BYTES);
         }
        
         //
@@ -162,15 +167,9 @@ int audioCallback (const void *inputBuffer,
     return paContinue;
 }
 
-void Audio::updateMixerParams(char *newAddress, unsigned short newPort) {
-    if (audioData->mixerAddress == NULL) {
-        audioData->mixerAddress = new char[255];
-    }
-    
-    strcpy(audioData->mixerAddress, newAddress);
-    audioData->mixerPort = newPort;
-    
-    std::cout << "Audio Mixer now at " << audioData->mixerAddress << ":" << newPort << ".\n";
+void Audio::updateMixerParams(in_addr_t newMixerAddress, in_port_t newMixerPort) {
+    audioData->mixerAddress = newMixerAddress;
+    audioData->mixerPort = newMixerPort;
 }
 
 struct AudioRecThreadStruct {

interface/src/Audio.h

@@ -23,7 +23,7 @@ public:
     void render(int screenWidth, int screenHeight);
     
     void getInputLoudness(float * lastLoudness, float * averageLoudness);
-    void updateMixerParams(char *mixerAddress, unsigned short mixerPort);
+    void updateMixerParams(in_addr_t mixerAddress, in_port_t mixerPort);
     
     // terminates audio I/O
     bool terminate();
@@ -35,10 +35,6 @@ private:
     // protects constructor so that public init method is used
     Audio();
     
-    // store current mixer address and port
-    char *mixerAddress;
-    int mixerPort;
-    
     // hold potential error returned from PortAudio functions
     PaError paError;
     

interface/src/AudioData.cpp

@@ -9,7 +9,7 @@
 #include "AudioData.h"
 
 AudioData::AudioData(int bufferLength) {
-    mixerAddress = NULL;
+    mixerAddress = 0;
     mixerPort = 0;
     
     samplesToQueue = new int16_t[bufferLength / sizeof(int16_t)];

interface/src/AudioData.h

@@ -22,8 +22,9 @@ class AudioData {
     
         int16_t *samplesToQueue;
     
-        char *mixerAddress;
-        unsigned short mixerPort;
+        // store current mixer address and port
+        in_addr_t mixerAddress;
+        in_port_t mixerPort;
     
         timeval lastCallback;
         float averagedLatency;

interface/src/main.cpp

@@ -876,6 +876,10 @@ void attachNewHeadToAgent(Agent *newAgent) {
     }
 }
 
+void audioMixerUpdate(in_addr_t newMixerAddress, in_port_t newMixerPort) {
+    audio.updateMixerParams(newMixerAddress, newMixerPort);
+}
+
 int main(int argc, char** argv)
 {
     struct ifaddrs * ifAddrStruct=NULL;
@@ -930,6 +934,7 @@ int main(int argc, char** argv)
 
     // the callback for our instance of AgentList is attachNewHeadToAgent
     agentList.linkedDataCreateCallback = &attachNewHeadToAgent;
+    agentList.audioMixerSocketUpdate = &audioMixerUpdate;
     
     // create thread for receipt of data via UDP
     pthread_t networkReceiveThread;

mixer/src/main.cpp

@@ -224,14 +224,14 @@ int addAgent(sockaddr_in *newAddress, void *audioData) {
 void *reportAliveToDS(void *args) {
     
     timeval lastSend, now;
-    char output[100];
+    unsigned char output[7];
    
     while (true) {
         gettimeofday(&lastSend, NULL);
         
-        sprintf(output, "%c %f,%f,%f,54.241.92.53 %hd", 'M', 0.f, 0.f, 0.f, MIXER_LISTEN_PORT);
-        int packetSize = strlen(output);
-        audioSocket.send(DOMAIN_IP, DOMAINSERVER_PORT, output, packetSize);
+        *output = 'M';
+        packSocket(output + 1, 895283510, htons(MIXER_LISTEN_PORT));
+        audioSocket.send(DOMAIN_IP, DOMAINSERVER_PORT, output, 7);
         
         gettimeofday(&now, NULL);
         

shared/src/AgentList.cpp

@@ -11,6 +11,7 @@
 
 AgentList::AgentList() : agentSocket(AGENT_SOCKET_LISTEN_PORT) {
     linkedDataCreateCallback = NULL;
+    audioMixerSocketUpdate = NULL;
 }
 
 AgentList::AgentList(int socketListenPort) : agentSocket(socketListenPort) {
@@ -123,6 +124,14 @@ bool AgentList::addOrUpdateAgent(sockaddr *publicSocket, sockaddr *localSocket,
             newAgent.activeSocket = newAgent.localSocket;
         }
         
+        if (newAgent.type == 'M' && audioMixerSocketUpdate != NULL) {
+            // this is an audio mixer
+            // for now that means we need to tell the audio class
+            // to use the local socket information the domain server gave us
+            sockaddr_in *localSocketIn = (sockaddr_in *)localSocket;
+            audioMixerSocketUpdate(localSocketIn->sin_addr.s_addr, localSocketIn->sin_port);
+        }
+        
         std::cout << "Added agent - " << &newAgent << "\n";
         
         agents.push_back(newAgent);       
@@ -136,7 +145,9 @@ bool AgentList::addOrUpdateAgent(sockaddr *publicSocket, sockaddr *localSocket,
 
 void AgentList::broadcastToAgents(char *broadcastData, size_t dataBytes) {
     for(std::vector<Agent>::iterator agent = agents.begin(); agent != agents.end(); agent++) {
-        if (agent->activeSocket != NULL) {
+        // for now assume we only want to send to other interface clients
+        // until the Audio class uses the AgentList
+        if (agent->activeSocket != NULL && agent->type == 'I') {
             // we know which socket is good for this agent, send there
             agentSocket.send((sockaddr *)agent->activeSocket, broadcastData, dataBytes);
         }
@@ -145,17 +156,19 @@ void AgentList::broadcastToAgents(char *broadcastData, size_t dataBytes) {
 
 
 void AgentList::pingAgents() {
+    char payload[] = "P";
+    
     for(std::vector<Agent>::iterator agent = agents.begin(); agent != agents.end(); agent++) {
-        char payload[] = "P";
-        
-        if (agent->activeSocket != NULL) {
-            // we know which socket is good for this agent, send there
-            agentSocket.send((sockaddr *)agent->activeSocket, payload, 1);
-        } else {
-            // ping both of the sockets for the agent so we can figure out
-            // which socket we can use
-            agentSocket.send(agent->publicSocket, payload, 1);
-            agentSocket.send(agent->localSocket, payload, 1);
+        if (agent->type == 'I') {
+            if (agent->activeSocket != NULL) {
+                // we know which socket is good for this agent, send there
+                agentSocket.send((sockaddr *)agent->activeSocket, payload, 1);
+            } else {
+                // ping both of the sockets for the agent so we can figure out
+                // which socket we can use
+                agentSocket.send(agent->publicSocket, payload, 1);
+                agentSocket.send(agent->localSocket, payload, 1);
+            }
         }
     }
 }

shared/src/AgentList.h

@@ -22,6 +22,7 @@ class AgentList {
         AgentList(int socketListenPort);
         std::vector<Agent> agents;
         void(*linkedDataCreateCallback)(Agent *);
+        void(*audioMixerSocketUpdate)(in_addr_t, in_port_t);
     
         UDPSocket* getAgentSocket();