src/cocoa/sound.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        sound.cpp
   3 // Purpose:     wxSound class implementation: optional
   4 // Author:      Ryan Norton
   5 // Modified by:
   6 // Created:     2004-10-02
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Ryan Norton
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "sound.h"
  14 #endif
  15
  16 #include "wx/object.h"
  17 #include "wx/string.h"
  18 #include "wx/sound.h"
  19
  20 #if wxUSE_SOUND
  21
  22 #include "wx/app.h"
  23 #include "wx/cocoa/autorelease.h"
  24 #include "wx/cocoa/string.h"
  25
  26 #import <AppKit/AppKit.h>
  27
  28 //
  29 // NB:  Vaclav's new wxSound API is really tricky -
  30 // Basically, we need to make sure that if the wxSound
  31 // object is still in scope we don't release it's NSSound
  32 //
  33
  34 WX_NSSound lastSound=NULL;
  35 bool isLastSoundLooping = false;
  36 bool isLastSoundInScope = false;
  37
  38 // ========================================================================
  39 // wxNSSoundDelegate
  40 // ========================================================================
  41 @interface wxNSSoundDelegate : NSObject
  42 {
  43 }
  44
  45 // Delegate methods
  46 - (void)sound:(NSSound *)theSound didFinishPlaying:(BOOL)bOK;
  47 @end // interface wxNSSoundDelegate : NSObject
  48
  49 @implementation wxNSSoundDelegate : NSObject
  50
  51 - (void)sound:(NSSound *)theSound didFinishPlaying:(BOOL)bOK
  52 {
  53     if (bOK && isLastSoundLooping)
  54         [lastSound play];
  55     else if (!isLastSoundInScope)
  56     {
  57         [lastSound release];
  58     }
  59 }
  60
  61 @end // wxNSSoundDelegate
  62
  63 const wxObjcAutoRefFromAlloc<struct objc_object*> wxSound::sm_cocoaDelegate = [[wxNSSoundDelegate alloc] init];
  64
  65 // ------------------------------------------------------------------
  66 //          wxSound
  67 // ------------------------------------------------------------------
  68
  69 wxSound::wxSound()
  70 :   m_cocoaNSSound(nil)
  71 ,   m_waveLength(0)
  72 {
  73 }
  74
  75 wxSound::wxSound(const wxString& sFileName, bool isResource)
  76 :   m_cocoaNSSound(nil)
  77 ,   m_waveLength(0)
  78 {
  79     Create(sFileName, isResource);
  80 }
  81
  82 wxSound::wxSound(int size, const wxByte* data)
  83 :   m_cocoaNSSound(nil)
  84 ,   m_waveLength(size)
  85 {
  86     NSData* theData = [[NSData alloc] dataWithBytesNoCopy:(void*)data length:size];
  87     m_cocoaNSSound = [[NSSound alloc] initWithData:theData];
  88
  89 }
  90
  91 wxSound::~wxSound()
  92 {
  93     if (m_cocoaNSSound != lastSound)
  94     {
  95         [m_cocoaNSSound release];
  96     }
  97     else
  98         isLastSoundInScope = false;
  99 }
 100
 101 bool wxSound::Create(const wxString& fileName, bool isResource)
 102 {
 103     wxAutoNSAutoreleasePool thePool;
 104
 105     Stop();
 106
 107     if (isResource)
 108     {
 109         //oftype could be @"snd" @"wav" or @"aiff"; nil or @"" autodetects (?)
 110         m_cocoaNSSound = [[NSSound alloc]
 111             initWithContentsOfFile:[[NSBundle mainBundle]
 112                     pathForResource:wxNSStringWithWxString(fileName)
 113                     ofType:nil]
 114             byReference:YES];
 115     }
 116     else
 117             m_cocoaNSSound = [[NSSound alloc] initWithContentsOfFile:wxNSStringWithWxString(fileName) byReference:YES];
 118
 119     m_sndname = fileName;
 120     return m_cocoaNSSound;
 121 }
 122
 123 bool wxSound::DoPlay(unsigned flags) const
 124 {
 125     wxASSERT_MSG(!( (flags & wxSOUND_SYNC) && (flags & wxSOUND_LOOP)),
 126                 wxT("Invalid flag combination passed to wxSound::Play"));
 127
 128     Stop();
 129
 130     if (flags & wxSOUND_ASYNC)
 131     {
 132         lastSound = m_cocoaNSSound;
 133         isLastSoundLooping = (flags & wxSOUND_LOOP) == wxSOUND_LOOP;
 134         isLastSoundInScope = true;
 135         [m_cocoaNSSound setDelegate:sm_cocoaDelegate];
 136         return [m_cocoaNSSound play];
 137     }
 138     else
 139     {
 140         [m_cocoaNSSound setDelegate:nil];
 141
 142         //play until done
 143         bool bOK = [m_cocoaNSSound play];
 144
 145         while ([m_cocoaNSSound isPlaying])
 146         {
 147             wxTheApp->Yield(false);
 148         }
 149         return bOK;
 150     }
 151 }
 152
 153 bool wxSound::IsPlaying()
 154 {
 155     return [lastSound isPlaying];
 156 }
 157
 158 void wxSound::Stop()
 159 {
 160     if (isLastSoundInScope)
 161     {
 162         isLastSoundInScope = false;
 163
 164         //remember that even though we're
 165         //programatically stopping it, the
 166         //delegate will still be called -
 167         //so it will free the memory here
 168         [((NSSound*&)lastSound) stop];
 169     }
 170
 171     lastSound = nil;
 172 }
 173
 174 #endif //wxUSE_SOUND