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Annotation of driverkit/libDriver/Kernel/audio_peak.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: /*
        !            25:  * audio_peak.h
        !            26:  *
        !            27:  * Copyright (c) 1992, NeXT Computer, Inc.  All rights reserved.
        !            28:  *
        !            29:  *             Prototypes for peak routines.
        !            30:  */
        !            31: 
        !            32: #import <bsd/sys/types.h>
        !            33: 
        !            34: extern void audio_mulaw8_peak(u_int chans, unsigned char *buf, u_int count,
        !            35:                              u_int *peak_left, u_int *peak_right);
        !            36: extern void audio_linear8_peak(u_int chans, char *buf, u_int count,
        !            37:                               u_int *peak_left, u_int *peak_right);
        !            38: extern void audio_linear16_peak(u_int chans, short *buf, u_int count,
        !            39:                                u_int *peak_left, u_int *peak_right);
        !            40: extern void audio_clear_peaks(u_int *peak_buf, u_int count);
        !            41: extern u_int audio_max_peak(u_int *peak_buf, u_int count);
        !            42: extern void audio_add_peak(u_int *peak_buf, u_int peak, u_int *cur,
        !            43:                           u_int count);

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