Return to audio_mix.h CVS log

Up to [Apple Darwin 0.x] / driverkit / libDriver / Kernel

Annotation of driverkit/libDriver/Kernel/audio_mix.h, revision 1.1.1.1

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_mix.h
                     26:  *
                     27:  * Copyright (c) 1991, NeXT Computer, Inc.  All rights reserved.
                     28:  *
                     29:  *      Audio driver mixing prototypes.
                     30:  *
                     31:  * HISTORY
                     32:  *      07/14/92/mtm    Original coding.
                     33:  */
                     34: 
                     35: #import "audio_types.h"
                     36: #import <bsd/sys/types.h>
                     37: 
                     38: extern void audio_swapSamples(short *src, short *dest, u_int count);
                     39: extern void audio_twosComp8ToUnary(char *src, char *dest, u_int count);
                     40: extern u_int audio_scaleSamples(char *src, char *dest, u_int count,
                     41:                                IOAudioDataFormat format, u_int chanCount,
                     42:                                int leftGain, int rightGain);
                     43: extern void audio_resample22To44(char *src, char *dest, u_int count,
                     44:                                 IOAudioDataFormat format, u_int channelCount);
                     45: extern void audio_resample44To22(char *src, char *dest, u_int count,
                     46:                                 IOAudioDataFormat format, u_int *phase);
                     47: extern void audio_convertMonoToStereo(char *src, char *dest, u_int count,
                     48:                                      IOAudioDataFormat format);
                     49: extern void audio_convertStereoToMono(char *src, char *dest, u_int count,
                     50:                                      IOAudioDataFormat format, u_int *phase);
                     51: extern void audio_convertLinear8ToLinear16(char *src, short *dest,
                     52:                                           u_int count);
                     53: extern void audio_convertLinear8ToMulaw8(char *src, char *dest, u_int count);
                     54: extern void audio_convertLinear16ToLinear8(short *src, char *dest, u_int count,
                     55:                                           u_int *phase);
                     56: extern void audio_convertLinear16ToMulaw8(short *src, char *dest, u_int count,
                     57:                                          u_int *phase);
                     58: extern void audio_convertMulaw8ToLinear16(char *src, short *dest, u_int count);
                     59: extern void audio_convertMulaw8ToLinear8(char *src, char *dest, u_int count);
                     60: extern u_int audio_mix(char *src, char *dest, u_int count,
                     61:                       IOAudioDataFormat format, boolean_t virgin);

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.