minor changes

frameserver/Buffer.cpp

@@ -3,13 +3,10 @@
 Buffer::Buffer( int _id )
 {
   id = _id;
-  
-  // allocate memory
 }
 
 Buffer::~Buffer() 
 {
-  // deallocate memory
 }
 
 void Buffer::set(frame_t data)

frameserver/Server.cpp

@@ -22,6 +22,16 @@ void Server::launch_threads()
   threads.push_back( Glib::Thread::create( sigc::mem_fun(this, &Server::mix), false ) );
 }
 
+
+/* this listens for UDP connections on a port and waits until there is data,
+   processes it and repeats */
+   
+/* TODO 
+    error and format checking
+    clean exit conditions
+    ability for one client to take over the display
+    */
+   
 void Server::listen()
 {
   int packetcounter = 0;
@@ -30,13 +40,15 @@ void Server::listen()
     boost::asio::io_service io_service;
      
     // next line is NOT thread-safe because we're accessing "port" without lock
+    // however, it is done only once before any other threads are started and
+    // should be safe
     udp::socket socket(io_service, udp::endpoint(udp::v4(), port));
 
     cout << "listening" << endl;
-    for (;;)
+    while (1)
     {
       frame_t frame;
-      boost::array<char, 200> recv_buf;
+      boost::array<char, BUFLEN> recv_buf;
       udp::endpoint remote_endpoint;
       boost::system::error_code error;
       
@@ -80,6 +92,7 @@ void Server::listen()
       std::string message = "received";
 
       boost::system::error_code ignored_error;
+      // we can provide feedback to clients
       //socket.send_to(boost::asio::buffer(message),
       //    remote_endpoint, 0, ignored_error);
     }
@@ -90,6 +103,11 @@ void Server::listen()
   }
 }
 
+
+/* the framemixer, this periodically (40 times a second) reads all input
+   buffers and then produces output, ready to be displayed.
+   In the final version, this is where interesting things will happen.
+   */
 void Server::mix()
 {
   int size = 0;

frameserver/defines.h

@@ -1,6 +1,7 @@
 #ifndef __DEFINES_H_
 #define __DEFINES_H_
 #define BUFLEN 1024
+#define NUMBUFS 100
 #define WIDTH 12
 #define HEIGHT 7
 #define SEGWIDTH 12

frameserver/servertest.sh

@@ -1,7 +1,5 @@
 #!/bin/bash
 
-i="0"
-
 while [ 1 ]
 do
 	echo "$1" | cat - display | netcat -q 0.1 -u 127.0.0.1 4321

frameserver/test_server.cpp

@@ -12,10 +12,7 @@
 #include "Buffer.h"
 #include "Buffers.h"
 
-#define NUMBUFS 10
-
 using namespace std;
-Buffers* buffers;
 
 int main(void) 
 {
@@ -25,7 +22,7 @@ int main(void)
   // our main loop with support for signals and all that jazz
   Glib::RefPtr<Glib::MainLoop> Main = Glib::MainLoop::create();
     
-  Server server(10,4321);
+  Server server(NUMBUFS,4321);
   server.launch_threads();
   
   Main->run();