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         [self release];
  59     }
  60 }
  61
  62 @end // wxNSSoundDelegate
  63
  64 const wxObjcAutoRefFromAlloc<struct objc_object*> wxSound::sm_cocoaDelegate = [[wxNSSoundDelegate alloc] init];
  65
  66 // ------------------------------------------------------------------
  67 //          wxSound
  68 // ------------------------------------------------------------------
  69
  70 wxSound::wxSound()
  71 :   m_cocoaNSSound(nil)
  72 ,   m_waveLength(0)
  73 {
  74 }
  75
  76 wxSound::wxSound(const wxString& sFileName, bool isResource)
  77 :   m_cocoaNSSound(nil)
  78 ,   m_waveLength(0)
  79 {
  80     Create(sFileName, isResource);
  81 }
  82
  83 wxSound::wxSound(int size, const wxByte* data)
  84 :   m_cocoaNSSound(nil)
  85 ,   m_waveLength(size)
  86 {
  87     NSData* theData = [[NSData alloc] dataWithBytesNoCopy:(void*)data length:size];
  88     m_cocoaNSSound = [[NSSound alloc] initWithData:theData];
  89
  90 }
  91
  92 wxSound::~wxSound()
  93 {
  94     if (m_cocoaNSSound != lastSound)
  95     {
  96         [m_cocoaNSSound release];
  97     }
  98     else
  99         isLastSoundInScope = false;
 100 }
 101
 102 bool wxSound::Create(const wxString& fileName, bool isResource)
 103 {
 104     wxAutoNSAutoreleasePool thePool;
 105
 106     Stop();
 107
 108     if (isResource)
 109     {
 110         //oftype could be @"snd" @"wav" or @"aiff"; nil or @"" autodetects (?)
 111         m_cocoaNSSound = [[NSSound alloc]
 112             initWithContentsOfFile:[[NSBundle mainBundle]
 113                     pathForResource:wxNSStringWithWxString(fileName)
 114                     ofType:nil]
 115             byReference:YES];
 116     }
 117     else
 118             m_cocoaNSSound = [[NSSound alloc] initWithContentsOfFile:wxNSStringWithWxString(fileName) byReference:YES];
 119
 120     m_sndname = fileName;
 121     return m_cocoaNSSound;
 122 }
 123
 124 bool wxSound::DoPlay(unsigned flags) const
 125 {
 126     wxASSERT_MSG(!( (flags & wxSOUND_SYNC) && (flags & wxSOUND_LOOP)),
 127                 wxT("Invalid flag combination passed to wxSound::Play"));
 128
 129     Stop();
 130
 131     if (flags & wxSOUND_ASYNC)
 132     {
 133         lastSound = m_cocoaNSSound;
 134         isLastSoundLooping = (flags & wxSOUND_LOOP) == wxSOUND_LOOP;
 135         isLastSoundInScope = true;
 136         [m_cocoaNSSound setDelegate:sm_cocoaDelegate];
 137         return [m_cocoaNSSound play];
 138     }
 139     else
 140     {
 141         [m_cocoaNSSound setDelegate:nil];
 142
 143         //play until done
 144         bool bOK = [m_cocoaNSSound play];
 145
 146         while ([m_cocoaNSSound isPlaying])
 147         {
 148             wxTheApp->Yield(false);
 149         }
 150         return bOK;
 151     }
 152 }
 153
 154 bool wxSound::IsPlaying()
 155 {
 156     return [lastSound isPlaying];
 157 }
 158
 159 void wxSound::Stop()
 160 {
 161     if (isLastSoundInScope)
 162     {
 163         isLastSoundInScope = false;
 164
 165         //remember that even though we're
 166         //programatically stopping it, the
 167         //delegate will still be called -
 168         //so it will free the memory here
 169         [((NSSound*&)lastSound) stop];
 170     }
 171
 172     lastSound = nil;
 173 }
 174
 175 #endif //wxUSE_SOUND