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C/C++ Source or Header  |  1995-08-05  |  6.3 KB  |  230 lines  |  [TEXT/MMCC]
  1. //____________________________________________________________
  2. //    ChangeVoice.c
  3. //
  4. //    Copyright © Dan Parks Sydow, 1995
  5. //    From the book:
  6. //    "Graphics and Sound Programming Techniques for the Mac",
  7. //    M&T Books, 1995
  8.  
  9.  
  10. //____________________________________________________________
  11.  
  12. #include <Gestalt.h>
  13. #include <Speech.h>
  14.  
  15.  
  16. //____________________________________________________________
  17.  
  18. void           InitializeToolbox( void );
  19. Boolean        IsSpeechAvailable( void );
  20. SpeechChannel  OpenOneSpeechChannelVoice( VoiceSpec );
  21. void           OpenSpeechDialog( void );
  22. OSErr          GetVoiceSpecBasedOnAgeGender( VoiceSpec *, short, short, short );
  23.  
  24.  
  25. //____________________________________________________________
  26.  
  27. #define         rSpeechDialog                     128
  28. #define         kPlaySpeechButton                   1
  29. #define         kSetSpeechYoungBoyButton            2
  30. #define         kSetSpeechMiddleAgeWomanButton      3
  31. #define         kSetSpeechRobotButton               4
  32. #define         kSetSpeechDefaultButton             5
  33. #define         kQuitButton                         6
  34. #define         kNoMatchingVoiceErr              -999
  35.  
  36. //____________________________________________________________
  37.  
  38. void  main( void )
  39. { 
  40.    Boolean  speechPresent;
  41.    
  42.    InitializeToolbox();
  43.  
  44.    speechPresent = IsSpeechAvailable();
  45.    if ( speechPresent == false )
  46.       ExitToShell();
  47.  
  48.    OpenSpeechDialog();
  49. }
  50.  
  51.  
  52. //____________________________________________________________
  53.  
  54. void  OpenSpeechDialog( void )
  55. {
  56.    DialogPtr         theDialog;
  57.    short             theItem;
  58.    Boolean           allDone = false;
  59.    OSErr             theError;
  60.    SpeechChannel     theChannel;
  61.    Str255            theString = "\pMilwaukee, that's in Minnesota isn't it?";
  62.    short             theAgeLo;
  63.    short             theAgeHi;
  64.    short             theGender;
  65.    VoiceSpec         theDefaultVoiceSpec;
  66.    VoiceSpec         theVoiceSpec;
  67.    VoiceDescription  theVoiceDesc;
  68.    
  69.    theDialog = GetNewDialog( rSpeechDialog, nil, (WindowPtr)-1L );
  70.    ShowWindow( theDialog );
  71.    SetPort( theDialog );
  72.    
  73.    theError = GetVoiceDescription( nil, &theVoiceDesc, sizeof( theVoiceDesc ) ); 
  74.    
  75.    theDefaultVoiceSpec = theVoiceDesc.voice;
  76.    theVoiceSpec = theDefaultVoiceSpec;
  77.    
  78.    while ( allDone == false )
  79.    {
  80.       ModalDialog( nil, &theItem );
  81.              
  82.       switch ( theItem )
  83.       {
  84.          case kSetSpeechYoungBoyButton:
  85.             theGender = kMale;
  86.             theAgeLo  =  5;
  87.             theAgeHi  = 10;
  88.             theError = GetVoiceSpecBasedOnAgeGender( &theVoiceSpec, theAgeLo, 
  89.                                                      theAgeHi, theGender );
  90.             break;
  91.  
  92.          case kSetSpeechMiddleAgeWomanButton:
  93.             theGender = kFemale;
  94.             theAgeLo  = 30;
  95.             theAgeHi  = 50;
  96.             theError = GetVoiceSpecBasedOnAgeGender( &theVoiceSpec, theAgeLo, 
  97.                                                      theAgeHi, theGender );
  98.             break;
  99.  
  100.          case kSetSpeechRobotButton:
  101.             theGender = kNeuter;
  102.             theAgeLo  =   500;
  103.             theAgeHi  = 10000;
  104.             theError = GetVoiceSpecBasedOnAgeGender( &theVoiceSpec, theAgeLo, 
  105.                                                      theAgeHi, theGender );
  106.             break;
  107.  
  108.          case kSetSpeechDefaultButton:
  109.             theVoiceSpec = theDefaultVoiceSpec;
  110.             break;
  111.             
  112.          case kPlaySpeechButton:
  113.             theChannel = OpenOneSpeechChannelVoice( theVoiceSpec );
  114.             if ( theChannel == nil )
  115.                ExitToShell();               
  116.             theError = SpeakText( theChannel, (Ptr)(theString + 1), theString[0] );
  117.             while ( SpeechBusy() == true )
  118.                ;                    
  119.             theError = DisposeSpeechChannel( theChannel );
  120.             if ( theError != noErr )
  121.                ExitToShell();  
  122.             break;
  123.  
  124.          case kQuitButton:
  125.             allDone = true;
  126.             break;
  127.       }
  128.       
  129.       if ( theError == kNoMatchingVoiceErr )
  130.       {
  131.          SysBeep( 0 );
  132.          theVoiceSpec = theDefaultVoiceSpec;
  133.       }
  134.       else if ( theError != noErr )
  135.          ExitToShell();
  136.    }
  137.  
  138.    DisposeDialog( theDialog ); 
  139. }
  140.  
  141. //____________________________________________________________
  142.  
  143. OSErr  GetVoiceSpecBasedOnAgeGender( VoiceSpec *theVoiceSpec, 
  144.                                      short      theAgeLo, 
  145.                                      short      theAgeHi, 
  146.                                      short      theGender )
  147. {
  148.    OSErr             theError;
  149.    short             theNumVoices;
  150.    short             theIndex;
  151.    VoiceDescription  theVoiceDesc;
  152.    
  153.    theError = CountVoices( &theNumVoices );
  154.    if ( theError != noErr )
  155.       return ( theError );
  156.  
  157.    for ( theIndex = 1; theIndex <= theNumVoices; theIndex++ )
  158.    {
  159.       theError = GetIndVoice( theIndex, theVoiceSpec );
  160.       if ( theError != noErr )
  161.          return ( theError );
  162.  
  163.       theError = GetVoiceDescription( theVoiceSpec, &theVoiceDesc, 
  164.                                       sizeof( theVoiceDesc ) );      
  165.       if ( theError != noErr )
  166.          return ( theError );
  167.       
  168.       if ( (theVoiceDesc.age >= theAgeLo) && (theVoiceDesc.age <= theAgeHi) )
  169.          if ( theVoiceDesc.gender == theGender )
  170.             return ( noErr );
  171.    }
  172.    return ( kNoMatchingVoiceErr );
  173. }
  174.  
  175.  
  176. //____________________________________________________________
  177.  
  178. SpeechChannel  OpenOneSpeechChannelVoice( VoiceSpec theVoiceSpec )
  179. {
  180.    SpeechChannel  theChannel;   
  181.    OSErr          theError;
  182.    
  183.    theError = NewSpeechChannel( &theVoiceSpec, &theChannel );
  184.    if ( theError != noErr )
  185.    {
  186.       theError = DisposeSpeechChannel( theChannel );
  187.       theChannel = nil;
  188.    }
  189.       
  190.    return ( theChannel );
  191. }
  192.  
  193.  
  194. //____________________________________________________________
  195.  
  196. Boolean  IsSpeechAvailable( void )
  197. {
  198.    OSErr    theError;
  199.    long     theResult;
  200.    Boolean  speechAvail;
  201.    
  202.    theError = Gestalt( gestaltSpeechAttr, &theResult );
  203.    if ( theError != noErr )
  204.       ExitToShell();
  205.       
  206.    speechAvail = theResult & ( 1 << gestaltSpeechMgrPresent );  
  207.    if ( speechAvail > 0 )
  208.       return ( true );
  209.    else
  210.       return ( false );
  211. }
  212.  
  213.  
  214. //____________________________________________________________
  215.  
  216. void  InitializeToolbox( void )
  217. {
  218.    InitGraf( &qd.thePort );
  219.    InitFonts();
  220.    InitWindows();
  221.    InitMenus();
  222.    TEInit();
  223.    InitDialogs( 0L );
  224.    FlushEvents( everyEvent, 0 );
  225.    InitCursor();
  226. }
  227.  
  228.  
  229.  
  230.