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2024-03-22 a0752693d998599af469473b8dc239ef973a012f

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/*++ 
 
  Copyright (c) 2004  - 2014, Intel Corporation. All rights reserved.<BR> 
                                                                                     
  SPDX-License-Identifier: BSD-2-Clause-Patent 
 
                                                                                     
 
Module Name: 
 
  Speaker.h 
 
Abstract: 
 
  EFI Speaker Interface Protocol 
 
Revision History 
 
**/ 
 
#ifndef _EFI_SPEAKER_H 
#define _EFI_SPEAKER_H 
 
// 
// Global Id for Speaker Interface 
// 
#define EFI_SPEAKER_INTERFACE_PROTOCOL_GUID \ 
  { \ 
    0x400b4476, 0x3081, 0x11d6, 0x87, 0xed, 0x00, 0x06, 0x29, 0x45, 0xc3, 0xb9 \ 
  } 
 
typedef struct _EFI_SPEAKER_IF_PROTOCOL  EFI_SPEAKER_IF_PROTOCOL; 
 
// 
// Beep Code 
// 
typedef 
EFI_STATUS 
(EFIAPI *EFI_GENERATE_BEEP) ( 
  IN EFI_SPEAKER_IF_PROTOCOL                * This, 
  IN     UINTN                              NumberOfBeep, 
  IN     UINTN                              BeepDuration, 
  IN     UINTN                              TimeInterval 
  ); 
 
// 
// Set Frequency 
// 
typedef 
EFI_STATUS 
(EFIAPI *EFI_SPEAKER_SET_FREQUENCY) ( 
  IN EFI_SPEAKER_IF_PROTOCOL               * This, 
  IN     UINT16                            Frequency 
  ); 
 
// 
// Protocol definition 
// 
struct _EFI_SPEAKER_IF_PROTOCOL { 
  EFI_SPEAKER_SET_FREQUENCY SetSpeakerToneFrequency; 
  EFI_GENERATE_BEEP         GenerateBeep; 
} ; 
 
extern EFI_GUID gEfiSpeakerInterfaceProtocolGuid; 
#endif