Messages

1

Audio / Re: sf::SoundStream onGetData()

« on: May 08, 2014, 12:28:40 pm »

The delay is not an issue . Even 250-300ms are fine in my case , I'm coding a standalone synthesizer/wave generator by the way .
When it's generating sounds in real-time ( instead writing them to a file )  , every time a chunk is popped from a queue and passed to the internal AL queue, I get "missing" part of a waveform.Not cutted or anything just audiable flat line for 1-2ms so I asked the question to understand if the problem is in my code or the speed of which the internal queue is filling.

And the pipeline :

Create chunk of N samples -> write a sine/whatever wave -> push in queue -> pop from queue -> pass to .data

( main thread ; SoundStream thread )

2

Audio / sf::SoundStream onGetData()

« on: May 06, 2014, 03:06:51 pm »

Hello again~!

Can I ask when exactly is onGetData() called ? When the previous chunk of samples has finished being played or a bit sooner ?
Is it possible if onGetData() takes lets say 2-3ms to return true , cracks or gaps in the sound to be produced ?
Thanks.

3

General / Trapping function keys

« on: November 25, 2011, 01:19:01 pm »

no one ?

4

General / Trapping function keys

« on: November 24, 2011, 10:08:41 pm »

Code: [Select]


#include <SFML/Config.hpp>
#include <SFML/System.hpp>
#include <SFML/Graphics.hpp>



int main()
{
   sf::RenderWindow *render_window;
   sf::ContextSettings render_settings;
   unsigned char smConsoleActive = 0;
   sf::Event evt;

   render_settings.AntialiasingLevel  = 0;
   render_settings.DepthBits          = 0;
   render_settings.MajorVersion       = 2;
   render_settings.MinorVersion       = 0;
   render_settings.StencilBits        = 0;

   render_window = new sf::RenderWindow(sf::VideoMode(1024,768,32),"win",sf::Style::Titlebar | sf::Style::Close,render_settings);
   bool terminate = false;


   while(!terminate && render_window->IsOpened())
   {
      if(sf::Keyboard::IsKeyPressed(sf::Keyboard::F10))
      {
         std::cout<<"0\n";
         smConsoleActive = 0;
      }

      if(sf::Keyboard::IsKeyPressed(sf::Keyboard::F11))
      {
         std::cout<<"1\n";
         smConsoleActive = 1;
      }

      if(sf::Keyboard::IsKeyPressed(sf::Keyboard::F12))
      {
         std::cout<<"2\n";
         smConsoleActive = 2;
      }
           
      while (render_window->PollEvent(evt))
      {
         if(evt.Type == sf::Event::TextEntered)
         {
            switch(evt.Key.Code)
            {
               case 100 :
                  // do stuff :
                  break;
            }
         }
      }
      render_window->Clear();
      render_window->Display();
   }

   delete render_window;
   return 0;
}



so if you press fast the three F-keys the output in std::cout is wrong ~50% of the time

5

General / Trapping function keys

« on: November 24, 2011, 09:50:08 pm »

Code: [Select]


void loop()
{
   smTerminate = false;
   smUiMode = SM_UIMODE_CONSOLE;

   while(!smTerminate && render_window->IsOpened())
   {
      switch(smUiMode)
      {
         case SM_UIMODE_CONSOLE:
            if(sf::Keyboard::IsKeyPressed(sf::Keyboard::F10))
            {
               std::cout<<"0\n";
               smConsoleActive = 0;
            }

            if(sf::Keyboard::IsKeyPressed(sf::Keyboard::F11))
            {
               std::cout<<"1\n";
               smConsoleActive = 1;
            }

            if(sf::Keyboard::IsKeyPressed(sf::Keyboard::F12))
            {
               std::cout<<"2\n";
               smConsoleActive = 2;
            }
           
            while (render_window->PollEvent(evt))
            {
               if(evt.Type == sf::Event::TextEntered)
               {
                  switch(evt.Key.Code)
                  {
                     case 100 :
                        // do stuff :
                        break;
                  }
               }
            }
            console[smConsoleActive].Display(render_window);
            break;



         default:
            ;
      }
   }
}


if i replace F10,F11 and F12 with Num1 Num2 and Num3 it works fine

6

General / Trapping function keys

« on: November 24, 2011, 09:22:52 pm »

i have this code :

Code: [Select]


while(true)
{
   if(sf::Keyboard::IsKeyPressed(sf::Keyboard::Num1))
      smFunction = 0;
   if(sf::Keyboard::IsKeyPressed(sf::Keyboard::Num2))
      smFunction = 1;
   if(sf::Keyboard::IsKeyPressed(sf::Keyboard::Num3))
      smFunction = 2;
   std::cout<<smFunction<<std::endl;
}


and it works as expected , but if i try to get function key state the input get stucked :

Code: [Select]


while(true)
{
   if(sf::Keyboard::IsKeyPressed(sf::Keyboard::F10))
      smFunction = 0;
   if(sf::Keyboard::IsKeyPressed(sf::Keyboard::F11))
      smFunction = 1;
   if(sf::Keyboard::IsKeyPressed(sf::Keyboard::F12))
      smFunction = 2;
   std::cout<<smFunction<<std::endl;
}


if i click on the screen rapidly the values are changing but if not , the value of <smFunction> get stuck at the previous value at a random time . also when stuck , i think the window loses focus for a second.

is this a bug or I'm doing it wrong ?

ps. im using sfml 2.0 ( 1-2max week snapshot ) on win7x32 machine
ps2. sorry for my english

7

System / Callback a method inside of a class with sf::Thread?

« on: November 09, 2011, 08:51:20 pm »

yes sir , im using 1.6
will 2.0 work fine ?

8

System / Callback a method inside of a class with sf::Thread?

« on: November 09, 2011, 07:15:25 pm »

I have :

Code: [Select]


class A
{
   private :
      sf::Thread *thread;
      bool running;
      void loop();
   public :
      A();
      ~A();
      void Start();
      void Stop();
    };



A::A()
{
   thread = new sf::Thread(&A::loop,this); // <- here is the error
   running = false;
}



A::~A()
{
   Stop();
   sf::Sleep(1.0f);
   delete thread;
}



void A::Start()
{
   running = true;
   thread->Launch();
}



void A::Stop()
{
   running = false;
}



void A::loop()
{
   while(running)
      // do sth
}



I get this error :
error C2664: 'sf::Thread::Thread(sf::Thread::FuncType,void *)' : cannot convert parameter 1 from 'void (__thiscall A::* )(void)' to 'sf::Thread::FuncType'
1>          There is no context in which this conversion is possible


( MS VC++ 2010 xpress )