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 // ------------------------------------------------------------------
  65 //          wxSound
  66 // ------------------------------------------------------------------
  67
  68 wxSound::wxSound()
  69 :   m_hSnd(NULL)
  70 ,   m_waveLength(0)
  71 {
  72 }
  73
  74 wxSound::wxSound(const wxString& sFileName, bool isResource)
  75 :   m_hSnd(NULL)
  76 ,   m_waveLength(0)
  77 {
  78     Create(sFileName, isResource);
  79 }
  80
  81 wxSound::wxSound(int size, const wxByte* data)
  82 :   m_hSnd(NULL)
  83 ,   m_waveLength(size)
  84 {
  85     NSData* theData = [[NSData alloc] dataWithBytesNoCopy:(void*)data length:size];
  86     m_hSnd = [[NSSound alloc] initWithData:theData];
  87
  88     m_cocoaSoundDelegate = [[wxNSSoundDelegate alloc] init];
  89 }
  90
  91 wxSound::~wxSound()
  92 {
  93     if (m_hSnd != lastSound)
  94     {
  95         [m_hSnd release];
  96         [m_cocoaSoundDelegate 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_hSnd = [[NSSound alloc]
 112             initWithContentsOfFile:[[NSBundle mainBundle]
 113                     pathForResource:wxNSStringWithWxString(fileName)
 114                     ofType:nil]
 115             byReference:YES];
 116     }
 117     else
 118             m_hSnd = [[NSSound alloc] initWithContentsOfFile:wxNSStringWithWxString(fileName) byReference:YES];
 119
 120     m_cocoaSoundDelegate = [[wxNSSoundDelegate alloc] init];
 121
 122     m_sndname = fileName;
 123     return m_hSnd != nil;
 124 }
 125
 126 bool wxSound::DoPlay(unsigned flags) const
 127 {
 128     wxASSERT_MSG(!( (flags & wxSOUND_SYNC) && (flags & wxSOUND_LOOP)),
 129                 wxT("Invalid flag combination passed to wxSound::Play"));
 130
 131     Stop();
 132
 133     if (flags & wxSOUND_ASYNC)
 134     {
 135         lastSound = m_hSnd;
 136         isLastSoundLooping = (flags & wxSOUND_LOOP) == wxSOUND_LOOP;
 137         isLastSoundInScope = true;
 138         [m_hSnd setDelegate:m_cocoaSoundDelegate];
 139         return [m_hSnd play];
 140     }
 141     else
 142     {
 143         [m_hSnd setDelegate:nil];
 144
 145         //play until done
 146         bool bOK = [m_hSnd play];
 147
 148         while ([m_hSnd isPlaying])
 149         {
 150             wxTheApp->Yield(false);
 151         }
 152         return bOK;
 153     }
 154 }
 155
 156 bool wxSound::IsPlaying()
 157 {
 158     return [lastSound isPlaying];
 159 }
 160
 161 void wxSound::Stop()
 162 {
 163     if (isLastSoundInScope)
 164     {
 165         isLastSoundInScope = false;
 166
 167         //remember that even though we're
 168         //programatically stopping it, the
 169         //delegate will still be called -
 170         //so it will free the memory here
 171         [((NSSound*&)lastSound) stop];
 172     }
 173
 174     lastSound = nil;
 175 }
 176
 177 #endif //wxUSE_SOUND