text: #ifndef AL_ALC_H
  #define AL_ALC_H
  
  #if defined(__cplusplus)
  extern "C" {
  #endif
  
  #if defined(_WIN32) && !defined(_XBOX)
   /* _OPENAL32LIB is deprecated */
   #if defined(AL_BUILD_LIBRARY) || defined (_OPENAL32LIB)
    #define ALC_API __declspec(dllexport)
   #else
    #define ALC_API __declspec(dllimport)
   #endif
  #else
   #define ALC_API extern
  #endif
  
  #if defined(_WIN32)
   #define ALC_APIENTRY __cdecl
  #else
   #define ALC_APIENTRY
  #endif
  
  #if TARGET_OS_MAC
   #pragma export on
  #endif
  
  #define ALC_VERSION_0_1         1
  
  typedef struct ALCdevice_struct ALCdevice;
  typedef struct ALCcontext_struct ALCcontext;
  
  
  /** 8-bit boolean */
  typedef char ALCboolean;
  
  /** character */
  typedef char ALCchar;
  
  /** signed 8-bit 2's complement integer */
  typedef char ALCbyte;
  
  /** unsigned 8-bit integer */
  typedef unsigned char ALCubyte;
  
  /** signed 16-bit 2's complement integer */
  typedef short ALCshort;
  
  /** unsigned 16-bit integer */
  typedef unsigned short ALCushort;
  
  /** signed 32-bit 2's complement integer */
  typedef int ALCint;
  
  /** unsigned 32-bit integer */
  typedef unsigned int ALCuint;
  
  /** non-negative 32-bit binary integer size */
  typedef int ALCsizei;
  
  /** enumerated 32-bit value */
  typedef int ALCenum;
  
  /** 32-bit IEEE754 floating-point */
  typedef float ALCfloat;
  
  /** 64-bit IEEE754 floating-point */
  typedef double ALCdouble;
  
  /** void type (for opaque pointers only) */
  typedef void ALCvoid;
  
  
  /* Enumerant values begin at column 50. No tabs. */
  
  /* bad value */
  #define ALC_INVALID                              0
  
  /* Boolean False. */
  #define ALC_FALSE                                0
  
  /* Boolean True. */
  #define ALC_TRUE                                 1
  
  /**
   * followed by <int> Hz
   */
  #define ALC_FREQUENCY                            0x1007
  
  /**
   * followed by <int> Hz
   */
  #define ALC_REFRESH                              0x1008
  
  /**
   * followed by AL_TRUE, AL_FALSE
   */
  #define ALC_SYNC                                 0x1009
  
  /**
   * followed by <int> Num of requested Mono (3D) Sources
   */
  #define ALC_MONO_SOURCES                         0x1010
  
  /**
   * followed by <int> Num of requested Stereo Sources
   */
  #define ALC_STEREO_SOURCES                       0x1011
  
  /**
   * errors
   */
  
  /**
   * No error
   */
  #define ALC_NO_ERROR                             ALC_FALSE
  
  /**
   * No device
   */
  #define ALC_INVALID_DEVICE                       0xA001
  
  /**
   * invalid context ID
   */
  #define ALC_INVALID_CONTEXT                      0xA002
  
  /**
   * bad enum
   */
  #define ALC_INVALID_ENUM                         0xA003
  
  /**
   * bad value
   */
  #define ALC_INVALID_VALUE                        0xA004
  
  /**
   * Out of memory.
   */
  #define ALC_OUT_OF_MEMORY                        0xA005
  
  
  /**
   * The Specifier string for default device
   */
  #define ALC_DEFAULT_DEVICE_SPECIFIER             0x1004
  #define ALC_DEVICE_SPECIFIER                     0x1005
  #define ALC_EXTENSIONS                           0x1006
  
  #define ALC_MAJOR_VERSION                        0x1000
  #define ALC_MINOR_VERSION                        0x1001
  
  #define ALC_ATTRIBUTES_SIZE                      0x1002
  #define ALC_ALL_ATTRIBUTES                       0x1003
  
  /**
   * Capture extension
   */
  #define ALC_CAPTURE_DEVICE_SPECIFIER             0x310
  #define ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER     0x311
  #define ALC_CAPTURE_SAMPLES                      0x312
  
  
  #if !defined(ALC_NO_PROTOTYPES)
  
  /*
   * Context Management
   */
  ALC_API ALCcontext *    ALC_APIENTRY alcCreateContext( ALCdevice *device, const ALCint* attrlist );
  
  ALC_API ALCboolean      ALC_APIENTRY alcMakeContextCurrent( ALCcontext *context );
  
  ALC_API void            ALC_APIENTRY alcProcessContext( ALCcontext *context );
  
  ALC_API void            ALC_APIENTRY alcSuspendContext( ALCcontext *context );
  
  ALC_API void            ALC_APIENTRY alcDestroyContext( ALCcontext *context );
  
  ALC_API ALCcontext *    ALC_APIENTRY alcGetCurrentContext( );
  
  ALC_API ALCdevice*      ALC_APIENTRY alcGetContextsDevice( ALCcontext *context );
  
  
  /*
   * Device Management
   */
  ALC_API ALCdevice *     ALC_APIENTRY alcOpenDevice( const ALCchar *devicename );
  
  ALC_API ALCboolean      ALC_APIENTRY alcCloseDevice( ALCdevice *device );
  
  
  /*
   * Error support.
   * Obtain the most recent Context error
   */
  ALC_API ALCenum         ALC_APIENTRY alcGetError( ALCdevice *device );
  
  
  /* 
   * Extension support.
   * Query for the presence of an extension, and obtain any appropriate
   * function pointers and enum values.
   */
  ALC_API ALCboolean      ALC_APIENTRY alcIsExtensionPresent( ALCdevice *device, const ALCchar *extname );
  
  ALC_API void  *         ALC_APIENTRY alcGetProcAddress( ALCdevice *device, const ALCchar *funcname );
  
  ALC_API ALCenum         ALC_APIENTRY alcGetEnumValue( ALCdevice *device, const ALCchar *enumname );
  
  
  /*
   * Query functions
   */
  ALC_API const ALCchar * ALC_APIENTRY alcGetString( ALCdevice *device, ALCenum param );
  
  ALC_API void            ALC_APIENTRY alcGetIntegerv( ALCdevice *device, ALCenum param, ALCsizei size, ALCint *data );
  
  
  /*
   * Capture functions
   */
  ALC_API ALCdevice*      ALC_APIENTRY alcCaptureOpenDevice( const ALCchar *devicename, ALCuint frequency, ALCenum format, ALCsizei buffersize );
  
  ALC_API ALCboolean      ALC_APIENTRY alcCaptureCloseDevice( ALCdevice *device );
  
  ALC_API void            ALC_APIENTRY alcCaptureStart( ALCdevice *device );
  
  ALC_API void            ALC_APIENTRY alcCaptureStop( ALCdevice *device );
  
  ALC_API void            ALC_APIENTRY alcCaptureSamples( ALCdevice *device, ALCvoid *buffer, ALCsizei samples );
  
  #else /* ALC_NO_PROTOTYPES */
  
  ALC_API ALCcontext *    (ALC_APIENTRY *alcCreateContext)( ALCdevice *device, const ALCint* attrlist );
  ALC_API ALCboolean      (ALC_APIENTRY *alcMakeContextCurrent)( ALCcontext *context );
  ALC_API void            (ALC_APIENTRY *alcProcessContext)( ALCcontext *context );
  ALC_API void            (ALC_APIENTRY *alcSuspendContext)( ALCcontext *context );
  ALC_API void            (ALC_APIENTRY *alcDestroyContext)( ALCcontext *context );
  ALC_API ALCcontext *    (ALC_APIENTRY *alcGetCurrentContext)( ALCvoid );
  ALC_API ALCdevice *     (ALC_APIENTRY *alcGetContextsDevice)( ALCcontext *context );
  ALC_API ALCdevice *     (ALC_APIENTRY *alcOpenDevice)( const ALCchar *devicename );
  ALC_API ALCboolean      (ALC_APIENTRY *alcCloseDevice)( ALCdevice *device );
  ALC_API ALCenum         (ALC_APIENTRY *alcGetError)( ALCdevice *device );
  ALC_API ALCboolean      (ALC_APIENTRY *alcIsExtensionPresent)( ALCdevice *device, const ALCchar *extname );
  ALC_API void *          (ALC_APIENTRY *alcGetProcAddress)( ALCdevice *device, const ALCchar *funcname );
  ALC_API ALCenum         (ALC_APIENTRY *alcGetEnumValue)( ALCdevice *device, const ALCchar *enumname );
  ALC_API const ALCchar*  (ALC_APIENTRY *alcGetString)( ALCdevice *device, ALCenum param );
  ALC_API void            (ALC_APIENTRY *alcGetIntegerv)( ALCdevice *device, ALCenum param, ALCsizei size, ALCint *dest );
  ALC_API ALCdevice *     (ALC_APIENTRY *alcCaptureOpenDevice)( const ALCchar *devicename, ALCuint frequency, ALCenum format, ALCsizei buffersize );
  ALC_API ALCboolean      (ALC_APIENTRY *alcCaptureCloseDevice)( ALCdevice *device );
  ALC_API void            (ALC_APIENTRY *alcCaptureStart)( ALCdevice *device );
  ALC_API void            (ALC_APIENTRY *alcCaptureStop)( ALCdevice *device );
  ALC_API void            (ALC_APIENTRY *alcCaptureSamples)( ALCdevice *device, ALCvoid *buffer, ALCsizei samples );
  
  /* Type definitions */
  typedef ALCcontext *   (ALC_APIENTRY *LPALCCREATECONTEXT) (ALCdevice *device, const ALCint *attrlist);
  typedef ALCboolean     (ALC_APIENTRY *LPALCMAKECONTEXTCURRENT)( ALCcontext *context );
  typedef void           (ALC_APIENTRY *LPALCPROCESSCONTEXT)( ALCcontext *context );
  typedef void           (ALC_APIENTRY *LPALCSUSPENDCONTEXT)( ALCcontext *context );
  typedef void           (ALC_APIENTRY *LPALCDESTROYCONTEXT)( ALCcontext *context );
  typedef ALCcontext *   (ALC_APIENTRY *LPALCGETCURRENTCONTEXT)( ALCvoid );
  typedef ALCdevice *    (ALC_APIENTRY *LPALCGETCONTEXTSDEVICE)( ALCcontext *context );
  typedef ALCdevice *    (ALC_APIENTRY *LPALCOPENDEVICE)( const ALCchar *devicename );
  typedef ALCboolean     (ALC_APIENTRY *LPALCCLOSEDEVICE)( ALCdevice *device );
  typedef ALCenum        (ALC_APIENTRY *LPALCGETERROR)( ALCdevice *device );
  typedef ALCboolean     (ALC_APIENTRY *LPALCISEXTENSIONPRESENT)( ALCdevice *device, const ALCchar *extname );
  typedef void *         (ALC_APIENTRY *LPALCGETPROCADDRESS)(ALCdevice *device, const ALCchar *funcname );
  typedef ALCenum        (ALC_APIENTRY *LPALCGETENUMVALUE)(ALCdevice *device, const ALCchar *enumname );
  typedef const ALCchar* (ALC_APIENTRY *LPALCGETSTRING)( ALCdevice *device, ALCenum param );
  typedef void           (ALC_APIENTRY *LPALCGETINTEGERV)( ALCdevice *device, ALCenum param, ALCsizei size, ALCint *dest );
  typedef ALCdevice *    (ALC_APIENTRY *LPALCCAPTUREOPENDEVICE)( const ALCchar *devicename, ALCuint frequency, ALCenum format, ALCsizei buffersize );
  typedef ALCboolean     (ALC_APIENTRY *LPALCCAPTURECLOSEDEVICE)( ALCdevice *device );
  typedef void           (ALC_APIENTRY *LPALCCAPTURESTART)( ALCdevice *device );
  typedef void           (ALC_APIENTRY *LPALCCAPTURESTOP)( ALCdevice *device );
  typedef void           (ALC_APIENTRY *LPALCCAPTURESAMPLES)( ALCdevice *device, ALCvoid *buffer, ALCsizei samples );
  
  #endif /* ALC_NO_PROTOTYPES */
  
  #if TARGET_OS_MAC
   #pragma export off
  #endif
  
  #if defined(__cplusplus)
  }
  #endif
  
  #endif /* AL_ALC_H */
  