/usr/include/audio/audioutil.h is in libaudio-dev 1.9.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright 1993 Network Computing Devices, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name Network Computing Devices, Inc. not be
* used in advertising or publicity pertaining to distribution of this
* software without specific, written prior permission.
*
* THIS SOFTWARE IS PROVIDED 'AS-IS'. NETWORK COMPUTING DEVICES, INC.,
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT
* LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE, OR NONINFRINGEMENT. IN NO EVENT SHALL NETWORK
* COMPUTING DEVICES, INC., BE LIABLE FOR ANY DAMAGES WHATSOEVER, INCLUDING
* SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING LOSS OF USE, DATA,
* OR PROFITS, EVEN IF ADVISED OF THE POSSIBILITY THEREOF, AND REGARDLESS OF
* WHETHER IN AN ACTION IN CONTRACT, TORT OR NEGLIGENCE, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* $NCDId: @(#)audioutil.h,v 1.21 1995/12/28 19:47:25 greg Exp $
*
* <audio/audioutil.h>
*
* This file contains utilities for using the audio library.
*/
#ifndef AUDIOUTIL_H_
#define AUDIOUTIL_H_
_AUFUNCPROTOBEGIN
/*****************************************************************************
* FLOW UTILITIES *
*****************************************************************************/
extern AuFlowID AUCDECL
AuGetScratchFlow(
AuServer *, /* server */
AuStatus * /* RETURN_status */
);
extern void AUCDECL
AuReleaseScratchFlow(
AuServer *, /* server */
AuFlowID, /* flow */
AuStatus * /* RETURN_status */
);
extern AuFlowID AUCDECL
AuGetScratchFlowToBucket(
AuServer *, /* server */
AuBucketID, /* bucket */
int *, /* RETURN_import */
AuStatus * /* RETURN_status */
);
extern AuFlowID AUCDECL
AuGetScratchFlowFromBucket(
AuServer *, /* server */
AuBucketID, /* bucket */
int *, /* RETURN_export */
AuStatus * /* RETURN_status */
);
extern void AUCDECL
AuStartFlow(
AuServer *, /* server */
AuFlowID, /* flow */
AuStatus * /* RETURN_status */
);
extern void AUCDECL
AuStopFlow(
AuServer *, /* server */
AuFlowID, /* flow */
AuStatus * /* RETURN_status */
);
extern void AUCDECL
AuPauseFlow(
AuServer *, /* server */
AuFlowID, /* flow */
AuStatus * /* RETURN_status */
);
/*****************************************************************************
* EVENT DISPATCHING *
*****************************************************************************/
extern void AUCDECL
AuHandleEvents(
AuServer * /* server */
);
extern AuBool AUCDECL
AuDispatchEvent(
AuServer *, /* server */
AuEvent *
);
extern AuEventHandlerRec * AUCDECL
AuRegisterEventHandler(
AuServer *, /* server */
AuMask, /* value_mask */
int, /* type */
AuID, /* id */
AuEventHandlerCallback, /* callback */
AuPointer /* data */
);
extern void AUCDECL
AuUnregisterEventHandler(
AuServer *, /* server */
AuEventHandlerRec * /* handler */
);
extern AuEventHandlerRec * AUCDECL
AuLookupEventHandler(
AuServer *, /* server */
AuEvent *, /* event */
AuEventHandlerRec * /* startwith */
);
/*****************************************************************************
* STRING UTILITIES *
*****************************************************************************/
const char * AUCDECL
AuFormatToString(
unsigned int /* format */
);
int AUCDECL
AuStringToFormat(
const char * /* string */
);
const char * AUCDECL
AuFormatToDefine(
unsigned int /* format */
);
int AUCDECL
AuDefineToFormat(
const char * /* define */
);
const char * AUCDECL
AuWaveFormToString(
unsigned int /* waveform */
);
int AUCDECL
AuStringToWaveForm(
const char * /* string */
);
/*****************************************************************************
* DATA CONVERSION UTILITIES *
*****************************************************************************/
int AUCDECL
AuConvertDataToShort(
int, /* data format */
int, /* num bytes */
AuPointer /* data */
);
int AUCDECL
AuConvertShortToData(
int, /* data format */
int, /* num bytes */
AuPointer /* data */
);
/*****************************************************************************
* MISC *
*****************************************************************************/
AuEventHandlerRec * AUCDECL
AuMonitorDevice(
AuServer *, /* server */
int, /* sample rate */
AuDeviceID, /* input device */
AuDeviceID, /* output device */
AuFixedPoint, /* volume */
void (*) ( /* done_callback */
AuServer *, /* server */
AuEventHandlerRec *, /* which */
AuEvent *, /* event */
AuPointer /* callback data */
),
AuPointer, /* callback data */
AuFlowID *, /* RETURN_flow */
int *, /* RETURN_volume_mult_element */
int *, /* RETURN_monitor_element */
AuStatus * /* RETURN_status */
);
_AUFUNCPROTOEND
#endif /* AUDIOUTIL_H_ */
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