fixing memory leak in example

git-svn-id: http://svn.berlios.de/svnroot/repos/sems/trunk@1313 8eb893ce-cfd4-0310-b710-fb5ebe64c474

apps/examples/tutorial/myjukebox/MyJukebox.cpp

@@ -45,6 +45,10 @@ MyJukeboxDialog::~MyJukeboxDialog()
 {
   // clean playlist items
   playlist.close(false);
+  // clean used AmAudioFile objects
+  for (vector<AmAudioFile*>::iterator it=
+	 used_audio_files.begin(); it != used_audio_files.end();it++)
+    delete *it;
 }
 
 void MyJukeboxDialog::onSessionStart(const AmSipRequest& req)
@@ -67,6 +71,8 @@ void MyJukeboxDialog::onDtmf(int event, int duration) {
   }
   AmPlaylistItem*  item = new AmPlaylistItem(wav_file, NULL);
   playlist.addToPlaylist(item);
+  // for garbage collection later
+  used_audio_files.push_back(wav_file);
 }
 
 void MyJukeboxDialog::process(AmEvent* ev)

apps/examples/tutorial/myjukebox/MyJukebox.h

@@ -3,10 +3,14 @@
 
 #include "AmSession.h"
 #include "AmPlaylist.h"
+#include "AmAudioFile.h"
 
 #include <string>
 using std::string;
 
+#include <vector>
+using std::vector;
+
 class MyJukeboxFactory: public AmSessionFactory
 {
 public:
@@ -22,6 +26,8 @@ class MyJukeboxDialog : public AmSession
 {
     AmPlaylist playlist;
 
+    vector<AmAudioFile*> used_audio_files;
+
  public:
     MyJukeboxDialog();
     ~MyJukeboxDialog();