added gtk+ client which listens for UDP packets from frameserver to display

colourful animations

clients/plasma.py

@@ -51,7 +51,7 @@ while (1):
   data += z_buffer
   for i in range(0,width):
     for j in range(0,height):
-      pixel = fabs(sin(2*pi*(float(i)/width)+t*frequency)*sin(2*pi*(float(j)/height)+t*frequency))
+      pixel = fabs(sin(2*pi*(float(i+1)/width)+t*frequency)*sin(2*pi*(float(j+1)/height)+t*frequency))
       data = data + chr(int(255*pixel)) + alpha
     data = data + "\n"
   for i in range(0,segwidth):

displayclient/AppWindow.cpp

@@ -0,0 +1,19 @@
+#include "AppWindow.h"
+
+AppWindow::AppWindow() :
+	hbox(),
+	canvas()
+{
+	hbox.pack_start(canvas);
+	add(hbox);
+	show_all();
+
+	canvas.signal_size_allocate().connect(
+		sigc::mem_fun(canvas,&Renderer::on_resize_event));		
+  
+	resize(420,800);
+}
+
+AppWindow::~AppWindow()
+{
+}

displayclient/AppWindow.h

@@ -0,0 +1,23 @@
+#ifndef APPWINDOW_H
+#define APPWINDOW_H
+
+#include <gtkmm.h>
+
+#include "Renderer.h"
+
+class AppWindow : public Gtk::Window
+{
+	public:
+		AppWindow();
+		virtual ~AppWindow();
+			
+	protected:
+		Gtk::HBox hbox;
+		
+		Renderer canvas;
+
+	private:
+
+};
+
+#endif

displayclient/Renderer.cpp

@@ -0,0 +1,249 @@
+
+#include "Renderer.h"
+
+
+#include <iostream>
+
+Renderer::Renderer()
+{
+	Glib::signal_timeout().connect( sigc::mem_fun(*this, &Renderer::on_timeout), 34 );
+
+	#ifndef GLIBMM_DEFAULT_SIGNAL_HANDLERS_ENABLED
+	//Connect the signal handler if it isn't already a virtual method override:
+	signal_expose_event().connect(sigc::mem_fun(*this, &Renderer::on_expose_event), false);
+	#endif //GLIBMM_DEFAULT_SIGNAL_HANDLERS_ENABLED
+
+	thickness = (int)((double)get_width()*0.05);
+
+	fullscreen = true;
+	invalid.xmin = get_width();
+	invalid.ymin = get_height();
+	invalid.width = invalid.height = 0;
+
+  Glib::Thread::create( sigc::mem_fun(this, &Renderer::listen), false);
+}
+
+Renderer::~Renderer()
+{}
+
+void Renderer::on_resize_event(Gtk::Allocation &allocation)
+{
+	// thickness controls the area that is redrawn around a new point
+	thickness = (int)((double)get_width()*0.05);
+	
+	// if fullscreen redraw is enabled set redraw limits to drawing area size
+	if( fullscreen )
+	{
+		invalid.xmin = 0;
+		invalid.width = get_width();
+		invalid.ymin = 0;
+		invalid.height = get_height();
+	}
+}
+
+bool Renderer::on_expose_event(GdkEventExpose *event)
+{
+  frame_t f;
+  // read the frame in a thread-safe manner
+  {
+      Glib::Mutex::Lock lock(mutex_);
+      f = frame;
+  }
+	Glib::RefPtr<Gdk::Window> window = get_window();
+
+	if(window)
+	{
+		//Gtk::Allocation allocation = get_allocation();
+		width = get_width();
+		height = get_height();
+		Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
+		cr->set_line_cap(Cairo::LINE_CAP_ROUND);
+		cr->set_line_join(Cairo::LINE_JOIN_ROUND);
+
+		
+		if(event)
+		{
+				cr->rectangle(event->area.x, event->area.y,
+								event->area.width, event->area.height);
+				cr->clip();
+		}
+		
+		cr->scale(width,height);
+		
+		cr->set_source_rgb(0.3,0.3,0.3);
+		cr->paint();
+
+    cr->set_line_width(0.05);
+
+    double window_width = 0.04;
+    double window_height = 0.08;
+    double window_hsep = 0.03;
+    double window_vsep = 0.04;
+
+    for(int i = 0; i < HEIGHT; i++)
+    {
+      for(int j = 0; j < WIDTH; j++)
+      {
+        for(int a = 0; a < CHANNELS; a++)
+        {
+          cr->set_source_rgb( (double)f.windows[i][j][0]/255, (double)f.windows[i][j][0]/255, (double)f.windows[i][j][0]/255 );
+          cr->rectangle( window_hsep + j*(window_hsep+window_width) , window_vsep + i*(window_height+window_vsep), window_width, window_height );
+          cr->fill();
+        }
+      }
+    }
+    
+    for(int w = 0; w < SEGWIDTH; w++ )
+    {
+      for(int n = 0;n < SEGNUM; n++)
+      {
+        double r = (double)f.segments[w][n][0]/255;
+        double b = (double)f.segments[w][n][1]/255;
+        double g = (double)f.segments[w][n][2]/255;
+
+        switch(n)
+        {
+          case 0:
+             draw_hsegment( window_hsep + w*(window_width+window_hsep), 0.88 , 0.01, window_width, r, g, b, cr);
+              break;
+          case 3:
+              draw_hsegment( window_hsep + w*(window_width+window_hsep), 0.88 + window_height , 0.01, window_width, r, g, b, cr);
+              break;
+          case 6:
+            draw_hsegment( window_hsep + w*(window_width+window_hsep), 0.88 + window_height/2, 0.01, window_width, r, g, b, cr);
+            break;
+          case 1:
+            draw_vsegment( window_hsep + w*(window_width+window_hsep) + window_width, 0.88, 0.01, window_width, r,g,b,cr);
+            break;
+          case 2:
+            draw_vsegment( window_hsep + w*(window_width+window_hsep) + window_width, 0.88 + window_width, 0.01, window_width, r,g,b,cr);
+            break;
+          case 4:
+            draw_vsegment( window_hsep + w*(window_width+window_hsep), 0.88 + window_width, 0.01, window_width, r,g,b,cr);
+            break;
+          case 5:
+            draw_vsegment( window_hsep + w*(window_width+window_hsep), 0.88, 0.01, window_width, r,g,b,cr);
+            break;
+          case 7:
+            cr->arc( window_hsep + w*(window_width+window_hsep) + window_width + 0.005, 0.88 + window_height + 0.002, 0.003, 0 , 2*PI );
+            cr->set_source_rgb(r,g,b);
+            cr->fill();
+            break;
+          default:
+            break;
+        }
+      }
+    }
+  }	
+	return true;
+}
+
+// x, y, thickness, length, colours
+void Renderer::draw_hsegment(double x, double y, double t, double l, double r, double g, double b, Cairo::RefPtr<Cairo::Context> cr)
+{
+  cr->move_to(x,y);
+  cr->line_to(x+0.1*l,y+0.5*t);
+  cr->line_to(x+0.9*l,y+0.5*t);
+  cr->line_to(x+l,y);
+  cr->line_to(x+l-0.1*l,y-0.5*t);
+  cr->line_to(x+l-0.9*l,y-0.5*t);
+  cr->close_path();
+  cr->set_source_rgb(r,g,b);
+  cr->fill();
+}
+
+// x, y, thickness, length, colours
+void Renderer::draw_vsegment(double x, double y, double t, double l, double r, double g, double b, Cairo::RefPtr<Cairo::Context> cr)
+{
+  cr->move_to(x,y);
+  cr->line_to(x+0.5*t,y+0.1*l);
+  cr->line_to(x+0.5*t,y+0.9*l);
+  cr->line_to(x,y+l);
+  cr->line_to(x-0.5*t,y+l-0.1*l);
+  cr->line_to(x-0.5*t,y+l-0.9*l);
+  cr->close_path();
+  cr->set_source_rgb(r,g,b);
+  cr->fill();
+}
+
+bool Renderer::on_timeout()
+{
+	/*static*/ Glib::RefPtr<Gdk::Window> win;
+	win = get_window();
+	if(win)
+	{
+		Gdk::Rectangle r(invalid.xmin,invalid.ymin,invalid.width,
+							 invalid.height);
+		win->invalidate_rect(r,false);
+	}
+	
+	// if fullscreen redraw is DISABLED, reset redraw rectangle
+	if( !fullscreen )
+		{
+		invalid.xmin = get_width();
+		invalid.ymin = get_height();
+		invalid.width = invalid.height = 0;
+		}
+	
+	return true;
+}
+
+// listen to udp packets on port 1234 which contain information about the frame
+void Renderer::listen()
+{
+  try
+  {
+    boost::asio::io_service io_service;
+    udp::socket socket(io_service, udp::endpoint(udp::v4(), 1234));
+
+    while (1)
+    {
+      // creating the buffer each time is faster than zeroing it out
+      boost::array<unsigned char, WIDTH*HEIGHT*CHANNELS + SEGWIDTH*SEGNUM*SEGCHANNELS> recv_buf;
+      udp::endpoint remote_endpoint;
+      boost::system::error_code error;
+      
+      socket.receive_from(boost::asio::buffer(recv_buf),
+          remote_endpoint, 0, error);
+
+      {
+        Glib::Mutex::Lock lock(mutex_);
+        for(int i = 0; i < HEIGHT; i++)
+        {
+          for(int j = 0; j < WIDTH; j++)
+          {
+            for(int a = 0; a < CHANNELS; a++)
+            {
+              frame.windows[i][j][a] = recv_buf[i*(CHANNELS*WIDTH) + j*CHANNELS + a];
+            }
+          }
+        }
+        
+        for(int w = 0; w < SEGWIDTH; w++ )
+        {
+          for(int n = 0;n < SEGNUM; n++)
+          {
+            for(int a = 0; a < SEGCHANNELS; a++)
+            {
+              frame.segments[w][n][a] = recv_buf[WIDTH*HEIGHT*CHANNELS + w*(SEGCHANNELS*SEGNUM) + n*SEGCHANNELS + a];
+            }
+          }
+        }
+      } // lock is released here because the block ends
+      
+      if (error && error != boost::asio::error::message_size)
+        throw boost::system::system_error(error);
+
+      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);
+    }
+  }
+  catch (std::exception& e)
+  {
+    std::cerr << e.what() << std::endl;
+  }
+}

displayclient/Renderer.h

@@ -0,0 +1,50 @@
+#ifndef RENDERER_H
+#define RENDERER_H
+
+#include <gtkmm.h>
+#include <cairomm/cairomm.h>
+#include <glibmm.h>
+
+#include <boost/array.hpp>
+#include <boost/asio.hpp>
+
+#include "defines.h"
+
+using boost::asio::ip::udp;
+using boost::asio::ip::tcp;
+using namespace std;
+
+class Renderer : public Gtk::DrawingArea
+{
+	public:
+		Renderer();
+		virtual ~Renderer();
+		
+		void on_resize_event(Gtk::Allocation &allocation);
+	
+	protected:
+		
+		virtual bool on_expose_event(GdkEventExpose *event);
+		bool on_timeout();
+		
+
+	private:
+    void listen();
+
+    void draw_hsegment(double,double,double,double,double,double,double,Cairo::RefPtr<Cairo::Context>);
+    void draw_vsegment(double,double,double,double,double,double,double,Cairo::RefPtr<Cairo::Context>);
+  
+    Glib::Mutex mutex_;
+    frame_t frame;
+      
+		std::list<position> points;
+		std::list<position>::iterator it_points_end;
+	
+		bool fullscreen;
+		int width,height;
+		
+		area invalid;
+		int thickness;
+};
+
+#endif

displayclient/defines.h

@@ -0,0 +1,65 @@
+#ifndef DEFINES_H
+#define DEFINES_H
+
+#include "../frameserver/defines.h"
+
+#include <math.h>
+
+#define PI 3.1415
+
+
+
+struct area
+{
+	int xmin, width, ymin, height;
+};
+
+enum operation
+{
+	move,
+	begin,
+	end	 
+};
+
+class position
+{
+	public:
+		position(void) {}
+		~position(void) {}
+		
+		position(double x_in, double y_in)
+		{
+		x = x_in;
+		y = y_in;
+		}
+		
+		bool operator==(position pos)
+		{
+			if( fabs(pos.x - (*this).x) <= 0.01 && fabs(pos.y - (*this).y) <= 0.01 )
+				return true;
+			else
+				return false;
+		}	
+
+		bool operator!=(position pos)
+		{
+			if( fabs(pos.x - (*this).x) > 0.01 && fabs(pos.y - (*this).y) > 0.01 )
+				return true;
+			else
+				return false;
+		}
+		
+		position operator=(position pos)
+		{
+			(*this).x=pos.x;
+			(*this).y=pos.y;
+			(*this).op=pos.op;
+		}
+
+		double x;
+		double y;
+		
+		operation op;
+};
+
+#endif

displayclient/main.cpp

@@ -0,0 +1,23 @@
+#include <gtkmm.h>
+#include <iostream>
+
+#include "defines.h"
+
+#include "AppWindow.h"
+
+
+int main(int argc, char** argv)
+{
+	Glib::thread_init();
+	std::cout << "init\n";
+	Gtk::Main kit(&argc,&argv);
+	std::cout << "kit\n";
+	AppWindow myWindow;
+	std::cout << "window\n";
+	
+	// launch the udp listener thread in the window in an idle moment
+	std::cout << "launch\n";	
+	Gtk::Main::run(myWindow);
+	std::cout << "run\n";
+	return 0;
+}

displayclient/make_displayclient

@@ -0,0 +1,2 @@
+#!/bin/bash
+g++ -O2 -march=pentium-m -pipe -fomit-frame-pointer -lboost_system `pkg-config --libs --cflags gdkmm-2.4` `pkg-config --libs --cflags gtkmm-2.4` `pkg-config --libs --cflags gthread-2.0`  -o displayclient Renderer.cpp AppWindow.cpp main.cpp

frameserver/Server.cpp

@@ -27,6 +27,7 @@ Server::~Server()
 void Server::launch_threads()
 {
   threads.push_back( Glib::Thread::create( sigc::mem_fun(this, &Server::listen), false ) );
+  threads.push_back( Glib::Thread::create( sigc::mem_fun(this, &Server::send), false ) );
   threads.push_back( Glib::Thread::create( sigc::mem_fun(this, &Server::mix), false ) );
   threads.push_back( Glib::Thread::create( sigc::mem_fun(this, &Server::console), false) );
   threads.push_back( Glib::Thread::create( sigc::mem_fun(this, &Server::expire), false) );
@@ -166,19 +167,25 @@ void Server::listen()
 }
 
 /* this sends the frame content to a host expecting udp packets */
-void Server::send(frame_t _frame, udp::endpoint destination)
+void Server::send()
 {
-  // write the frame into a char buffer, make it static so we don't waste time creating
+
-  // it at every function call
   const int length = WIDTH*HEIGHT*CHANNELS + SEGWIDTH*SEGNUM*SEGCHANNELS;
   static char data[length];
+  
+  while(1)
+  {
+    {
+      // lock the object for this operation
+      Glib::Mutex::Lock lock(mutex_);
+      // write the frame into a char buffer
       for(int i = 0; i < HEIGHT; i++)
       {
         for(int j = 0; j < WIDTH; j++)
         {
           for(int k = 0; k < CHANNELS; k++)
           {
-        data[i*WIDTH*CHANNELS + CHANNELS*j + k] = _frame.windows[i][j][k];
+            data[i*WIDTH*CHANNELS + CHANNELS*j + k] = frame.windows[i][j][k];
           }
         }
       }
@@ -190,7 +197,8 @@ void Server::send(frame_t _frame, udp::endpoint destination)
           for(int k = 0; k < SEGCHANNELS; k++)
           {
             data[WIDTH*HEIGHT*CHANNELS +
-              i*SEGNUM*SEGCHANNELS + SEGCHANNELS*j + k] = _frame.segments[i][j][k];
+                  i*SEGNUM*SEGCHANNELS + SEGCHANNELS*j + k] = frame.segments[i][j][k];
+          }
         }
       }
     }
@@ -199,14 +207,24 @@ void Server::send(frame_t _frame, udp::endpoint destination)
     {
       boost::asio::io_service io_service;
 
-    udp::socket socket(io_service, udp::endpoint(udp::v4(),0));
+      /*UDP */
+      boost::asio::ip::udp::endpoint u_remote_endpoint( boost::asio::ip::address_v4::from_string((char*)REMOTE_IP) , (short)REMOTE_PORT );
+      udp::socket u_socket(io_service, udp::endpoint(udp::v4(),0));
+      u_socket.send_to(boost::asio::buffer(data,length), u_remote_endpoint);
+
+      /* TCP */
+      boost::asio::ip::tcp::endpoint t_remote_endpoint( boost::asio::ip::address_v4::from_string((char*)REMOTE_IP) , (short)REMOTE_PORT );
+      tcp::socket t_socket(io_service);
+      t_socket.connect(t_remote_endpoint);
+      boost::asio::write(t_socket, boost::asio::buffer(data, length));
 
-   // std::cerr << destination << std::endl;
-    socket.send_to(boost::asio::buffer(data,length), destination);
     }
     catch (std::exception& e)
     {
-    std::cerr << e.what() << std::endl;
+      //std::cerr << e.what() << std::endl;
+    }
+  // sleep until next update cycle
+  usleep(25000);
   }
 }
 
@@ -309,18 +327,13 @@ void Server::mix()
       * (note, temp_frame is passed by value and will live only in the
       * argument of the "output" function and does not need to be locked) */
 	output(temp_frame);
+  usleep( 25000 );
 	}
 }
 
 // output to hardware using OLA
 void Server::output(frame_t _frame)
 {
-  boost::asio::ip::udp::endpoint remote_endpoint( boost::asio::ip::address_v4::from_string(REMOTE_IP) , REMOTE_PORT );
-  // send frame to a network host
-  send(_frame,remote_endpoint);
-  
-	// pretend we're doing something
-	usleep( 25000 );
 }
 
 void Server::console()

frameserver/Server.h

@@ -25,6 +25,7 @@ enum modes
 };
 
 using boost::asio::ip::udp;
+using boost::asio::ip::tcp;
 using namespace std;
 
 class Server : public sigc::trackable
@@ -51,7 +52,7 @@ private:
   void console_printclients();
   
   void listen();
-  void send(frame_t,udp::endpoint);
+  void send();
   void mix();
   void output(frame_t);
   int get_size();

frameserver/servertest.py

@@ -6,7 +6,7 @@ import time
 import random
 
 # Set the socket parameters
-local_port = 5000 + int( sys.argv[1] )
+local_port = 6000 + int( sys.argv[1] )
 remote_port = 4321
 
 # TODO: autodetect interface address for remote application
@@ -22,9 +22,11 @@ UDPSock.bind((outgoing_if, local_port))
 #UDPSock.connect((remote_host, remote_port))
 
 display = open('display', 'r')
+
+hash = "abcdefghij"
 z_buffer = chr(1) + "\n"
 
-data = z_buffer + display.read()
+data = hash + z_buffer + display.read()
 
 random.seed()