Fix wxSound::Create() and IsOk() return values in wxOSX.

Don't pretend that we created wxSound object successfully without actually
doing it: this means that now passing an invalid (e.g. non-existent or using
wrong format) file to wxSound::Create()/ctor will return false/result in
IsOk() returning false later, just as in the other ports.

It also means that playing a successfully created wxSound object won't give
any error messages, as unexpectedly happened before.

src/osx/core/sound.cpp

@@ -34,9 +34,9 @@
 class wxOSXAudioToolboxSoundData : public wxSoundData
 {
 public:
-    wxOSXAudioToolboxSoundData(const wxString& fileName);
+    explicit wxOSXAudioToolboxSoundData(SystemSoundID soundID);
 
-    ~wxOSXAudioToolboxSoundData();
+    virtual ~wxOSXAudioToolboxSoundData();
 
     virtual bool Play(unsigned flags) wxOVERRIDE;
 
@@ -46,14 +46,12 @@ protected:
     void SoundCompleted();
 
     SystemSoundID m_soundID;
-    wxString m_sndname; //file path
     bool m_playing;
 };
 
-wxOSXAudioToolboxSoundData::wxOSXAudioToolboxSoundData(const wxString& fileName) :
+wxOSXAudioToolboxSoundData::wxOSXAudioToolboxSoundData(SystemSoundID soundID) :
-    m_soundID(0)
+    m_soundID(soundID)
 {
-    m_sndname = fileName;
     m_playing = false;
 }
 
@@ -108,17 +106,6 @@ bool wxOSXAudioToolboxSoundData::Play(unsigned flags)
 
     m_flags = flags;
 
-    wxCFRef<CFMutableStringRef> cfMutableString(CFStringCreateMutableCopy(NULL, 0, wxCFStringRef(m_sndname)));
-    CFStringNormalize(cfMutableString,kCFStringNormalizationFormD);
-    wxCFRef<CFURLRef> url(CFURLCreateWithFileSystemPath(kCFAllocatorDefault, cfMutableString , kCFURLPOSIXPathStyle, false));
-
-    OSStatus err = AudioServicesCreateSystemSoundID(url, &m_soundID);
-    if ( err != 0 )
-    {
-        wxLogError(_("Failed to load sound from \"%s\" (error %d)."), m_sndname, err);
-        return false;
-    }
-
     AudioServicesAddSystemSoundCompletion( m_soundID, CFRunLoopGetCurrent(), NULL, wxOSXAudioToolboxSoundData::CompletionCallback, (void *) this );
 
     bool sync = !(flags & wxSOUND_ASYNC);
@@ -149,7 +136,20 @@ bool wxSound::Create(const wxString& fileName, bool isResource)
 {
     wxCHECK_MSG( !isResource, false, "not implemented" );
 
-    m_data = new wxOSXAudioToolboxSoundData(fileName);
+    wxCFRef<CFMutableStringRef> cfMutableString(CFStringCreateMutableCopy(NULL, 0, wxCFStringRef(fileName)));
+    CFStringNormalize(cfMutableString,kCFStringNormalizationFormD);
+    wxCFRef<CFURLRef> url(CFURLCreateWithFileSystemPath(kCFAllocatorDefault, cfMutableString , kCFURLPOSIXPathStyle, false));
+
+    SystemSoundID soundID;
+    OSStatus err = AudioServicesCreateSystemSoundID(url, &soundID);
+    if ( err != 0 )
+    {
+        wxLogError(_("Failed to load sound from \"%s\" (error %d)."), fileName, err);
+        return false;
+    }
+
+    m_data = new wxOSXAudioToolboxSoundData(soundID);
+
     return true;
 }