Playing sound in Fltk

baard · #1 07-Sep-2006, 08:56

Greetings. I am a new member and a beginner. Please help me with the following learner's code. I am using audiere and fltk to play a sound file. I need to play a cat sound file when the sing button is clicked in cat window and a dog sound when a sing button is clicked in a dog widow. I tried to use the sound functions from the callback functions, but it is not working. Please suggest a solution.

CPP / C++ / C Code:

#include <audiere.h>

#include <fltk/run.h>
#include <fltk/Window.h>
#include <fltk/Button.h>
#include <fltk/Widget.h>
#include <fltk/SharedImage.h>

using namespace audiere;
using namespace fltk;

//========================================================
void meaw(Widget* o, void*  ) {
   Button* b=(Button*)o;

b->label("Meaw meaw..."); //redraw not necessary

   b->resize(10,150,140,30); //redraw needed
   b->redraw();
}
//-------------------------------------------------------
void bark(Widget* o, void*  ) {
   Button* b=(Button*)o;
   b->label("Bow wow ..."); //redraw not necessary

   b->resize(10,150,140,30); //redraw needed
   b->redraw();
}

//========================================================


int main(int argc, char **argv) {
//--------------------------------------------------------------------Main

 //we can play the sound without any callback this way. How can I call this from the  callback functions?---------------

   AudioDevicePtr device(OpenDevice());
   OutputStreamPtr sound(OpenSound(device,"b.wav", false));
   sound->play();
//-----------------------------------------------------------------

Window *cat = new Window(30,60,200, 180); 
Window *dog = new Window(240,60,200, 180); 

cat->begin();
cat->image(fltk::pngImage::get("cat.png"));
Button * b = new Button(0,0,70,23,"Sing");
b->callback(meaw);

    
b->labelfont(HELVETICA_BOLD_ITALIC);
b->labelsize(18);
cat->end();
//----------------------------------------------
dog->begin();
dog->image(fltk::pngImage::get("dog.png"));
Button * c = new Button(0,0,70,23,"Sing");
c->labelfont(HELVETICA_BOLD_ITALIC);
c->labelsize(18);
c->callback(bark);
dog->end();
//----------------------------------------------
dog->show();
cat->show();

 return run();

}

baard · #2 09-Sep-2006, 09:40

No response

OK. I have solved the problem. I created a derived window class and wrapped the sound function inside. Now it is working. I am posting the code, if anybody is interested. It uses the ripping of a simple wrapping example from fltk site.

Code:

#include <audiere.h>

#include <fltk/run.h>
#include <fltk/Window.h>
#include <fltk/Button.h>
#include <fltk/Widget.h>
#include <fltk/SharedImage.h>
#include <fltk/ask.h>     // fltk::alert()
using namespace audiere;
using namespace fltk;


class LabelWindow : public Window 
{
  Widget labExample; // NOTE: I am using fltk::Widget as label!
  Button butExit;
OutputStreamPtr mysound;
  inline void ButExitCB_i() 
  {  
     this->playsound();   
    //fltk::alert("You clicked me, now I'll quit!");
    //this->hide();
  }
  
  static void ButExitCB(Widget*, void* v) 
  {
    ((LabelWindow*)v)->ButExitCB_i();
  }

  public:
         void setsound(OutputStreamPtr mysounda){
              mysound=mysounda;
              }
         
void  playsound(){
      if (mysound)
      
      mysound->play();
      }
    // LabelWindow constructor
    LabelWindow(const char* label=0) :
      //Window(USEDEFAULT,USEDEFAULT,320,90,label,true),
      Window(100,100,256,256,label,true),
     labExample(10,10,200,20,"I can sing!"),
      butExit(0,0,60,32,"&Sing") 
    {
      // Here we set callbacks
      butExit.callback(ButExitCB, this);
      // and some properties for those objects we have on our Window
      butExit.box(fltk::PLASTIC_DOWN_BOX);
      labExample.box(fltk::NO_BOX); // this is a label - we do not want a box
      end();
    }
  
    // Destructor
    ~LabelWindow() {}
}; // LabelWindow class
//void playsound(OutputStreamPtr mysound);
int main(int argc, char ** argv) 

{
     
AudioDevicePtr device(OpenDevice());
 OutputStreamPtr sound(OpenSound(device,"a.wav", false));

 OutputStreamPtr soundb(OpenSound(device,"b.wav", false));


  LabelWindow Cat("Example of simple, clickable label.");
  
Cat.setsound(soundb);
  
  Cat.image(fltk::pngImage::get("cat.png"));
  
 
  LabelWindow dog("singg");

  dog.position(370,100);
  dog.setsound(sound);
  dog.image(fltk::pngImage::get("dog.png"));
  
  dog.show(argc, argv);
  Cat.show(argc, argv);
   return run();
}

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Playing sound in Fltk

Re: Playing sound in Fltk