Home | History | Annotate | Line # | Download | only in common
sun.c revision 1.5.16.1 
      1 /*	$NetBSD: sun.c,v 1.5.16.1 2008/06/04 02:05:58 yamt Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2002 Matthew R. Green
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 /*
     30  * XXX this is slightly icky in places...
     31  */
     32 #include <sys/cdefs.h>
     33 
     34 #ifndef lint
     35 __RCSID("$NetBSD: sun.c,v 1.5.16.1 2008/06/04 02:05:58 yamt Exp $");
     36 #endif
     37 
     38 
     39 #include <sys/types.h>
     40 #include <sys/audioio.h>
     41 #include <sys/ioctl.h>
     42 #include <sys/time.h>
     43 
     44 #include <ctype.h>
     45 #include <err.h>
     46 #include <stdio.h>
     47 #include <stdlib.h>
     48 #include <string.h>
     49 
     50 #include "libaudio.h"
     51 
     52 /*
     53  * SunOS/NeXT .au format helpers
     54  */
     55 struct {
     56 	int	file_encoding;
     57 	int	encoding;
     58 	int	precision;
     59 } file2sw_encodings[] = {
     60 	{ AUDIO_FILE_ENCODING_MULAW_8,		AUDIO_ENCODING_ULAW,	8 },
     61 	{ AUDIO_FILE_ENCODING_LINEAR_8,		AUDIO_ENCODING_SLINEAR_BE, 8 },
     62 	{ AUDIO_FILE_ENCODING_LINEAR_16,	AUDIO_ENCODING_SLINEAR_BE, 16 },
     63 	{ AUDIO_FILE_ENCODING_LINEAR_24,	AUDIO_ENCODING_SLINEAR_BE, 24 },
     64 	{ AUDIO_FILE_ENCODING_LINEAR_32,	AUDIO_ENCODING_SLINEAR_BE, 32 },
     65 #if 0
     66 	/*
     67 	 * we should make some of these available.  the, eg ultrasparc, port
     68 	 * can use the VIS instructions (if available) do do some of these
     69 	 * mpeg ones.
     70 	 */
     71 	{ AUDIO_FILE_ENCODING_FLOAT,		AUDIO_ENCODING_ULAW,	32 },
     72 	{ AUDIO_FILE_ENCODING_DOUBLE,		AUDIO_ENCODING_ULAW,	64 },
     73 	{ AUDIO_FILE_ENCODING_ADPCM_G721,	AUDIO_ENCODING_ULAW,	4 },
     74 	{ AUDIO_FILE_ENCODING_ADPCM_G722,	AUDIO_ENCODING_ULAW,	0 },
     75 	{ AUDIO_FILE_ENCODING_ADPCM_G723_3,	AUDIO_ENCODING_ULAW,	3 },
     76 	{ AUDIO_FILE_ENCODING_ADPCM_G723_5,	AUDIO_ENCODING_ULAW,	5 },
     77 #endif
     78 	{ AUDIO_FILE_ENCODING_ALAW_8,		AUDIO_ENCODING_ALAW,	8 },
     79 	{ -1, -1, -1 }
     80 };
     81 
     82 int
     83 audio_sun_to_encoding(sun_encoding, encp, precp)
     84 	int	sun_encoding;
     85 	u_int	*encp;
     86 	u_int	*precp;
     87 {
     88 	int i;
     89 
     90 	for (i = 0; file2sw_encodings[i].file_encoding != -1; i++)
     91 		if (file2sw_encodings[i].file_encoding == sun_encoding) {
     92 			*precp = file2sw_encodings[i].precision;
     93 			*encp = file2sw_encodings[i].encoding;
     94 			return (0);
     95 		}
     96 	return (1);
     97 }
     98 
     99 int
    100 audio_encoding_to_sun(encoding, precision, sunep)
    101 	int	encoding;
    102 	int	precision;
    103 	int	*sunep;
    104 {
    105 	int i;
    106 
    107 	for (i = 0; file2sw_encodings[i].file_encoding != -1; i++)
    108 		if (file2sw_encodings[i].encoding == encoding &&
    109 		    file2sw_encodings[i].precision == precision) {
    110 			*sunep = file2sw_encodings[i].file_encoding;
    111 			return (0);
    112 		}
    113 	return (1);
    114 }
    115