1 /*++ 2 3 Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR> 4 5 This program and the accompanying materials are licensed and made available under 7 the terms and conditions of the BSD License that accompanies this distribution. 9 The full text of the license may be found at 11 http://opensource.org/licenses/bsd-license.php. 13 15 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 17 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 19 21 23 Module Name: 24 25 Speaker.h 26 27 Abstract: 28 29 EFI Speaker Interface Protocol 30 31 Revision History 32 33 **/ 34 35 #ifndef _EFI_SPEAKER_H 36 #define _EFI_SPEAKER_H 37 38 // 39 // Global Id for Speaker Interface 40 // 41 #define EFI_SPEAKER_INTERFACE_PROTOCOL_GUID \ 42 { \ 43 0x400b4476, 0x3081, 0x11d6, 0x87, 0xed, 0x00, 0x06, 0x29, 0x45, 0xc3, 0xb9 \ 44 } 45 46 typedef struct _EFI_SPEAKER_IF_PROTOCOL EFI_SPEAKER_IF_PROTOCOL; 47 48 // 49 // Beep Code 50 // 51 typedef 52 EFI_STATUS 53 (EFIAPI *EFI_GENERATE_BEEP) ( 54 IN EFI_SPEAKER_IF_PROTOCOL * This, 55 IN UINTN NumberOfBeep, 56 IN UINTN BeepDuration, 57 IN UINTN TimeInterval 58 ); 59 60 // 61 // Set Frequency 62 // 63 typedef 64 EFI_STATUS 65 (EFIAPI *EFI_SPEAKER_SET_FREQUENCY) ( 66 IN EFI_SPEAKER_IF_PROTOCOL * This, 67 IN UINT16 Frequency 68 ); 69 70 // 71 // Protocol definition 72 // 73 struct _EFI_SPEAKER_IF_PROTOCOL { 74 EFI_SPEAKER_SET_FREQUENCY SetSpeakerToneFrequency; 75 EFI_GENERATE_BEEP GenerateBeep; 76 } ; 77 78 extern EFI_GUID gEfiSpeakerInterfaceProtocolGuid; 79 #endif 80
