1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
/* $OpenBSD: legacy.c,v 1.6 2009/04/22 10:57:33 ratchov Exp $ */
/*
* Copyright (c) 1997 Kenneth Stailey. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Kenneth Stailey.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sndio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include <err.h>
#include "wav.h"
/* headerless data files. played at /dev/audio's defaults.
*/
#define FMT_RAW 0
/* Sun/NeXT .au files. header is skipped and /dev/audio is configured
* for monaural 8-bit ulaw @ 8kHz, the de facto format for .au files,
* as well as the historical default configuration for /dev/audio.
*/
#define FMT_AU 1
/* RIFF WAV files. header is parsed for format details which are
* applied to /dev/audio.
*/
#define FMT_WAV 2
int
legacy_play(char *dev, char *aufile)
{
struct sio_hdl *hdl;
struct sio_par spar, par;
struct aparams apar;
ssize_t rd;
off_t datasz;
char buf[5120];
size_t readsz;
int fd, fmt = FMT_RAW;
u_int32_t pos = 0, snd_fmt = 1, rate = 8000, chan = 1;
char magic[4];
short *map;
if ((fd = open(aufile, O_RDONLY)) < 0) {
warn("cannot open %s", aufile);
return(1);
}
if (read(fd, magic, sizeof(magic)) != sizeof(magic)) {
/* read() error, or the file is smaller than sizeof(magic).
* treat as a raw file, like previous versions of aucat.
*/
} else if (!strncmp(magic, ".snd", 4)) {
fmt = FMT_AU;
if (read(fd, &pos, sizeof(pos)) == sizeof(pos))
pos = ntohl(pos);
/* data size */
if (lseek(fd, 4, SEEK_CUR) == -1)
warn("lseek hdr");
if (read(fd, &snd_fmt, sizeof(snd_fmt)) == sizeof(snd_fmt))
snd_fmt = ntohl(snd_fmt);
if (read(fd, &rate, sizeof(rate)) == sizeof(rate))
rate = ntohl(rate);
if (read(fd, &chan, sizeof(chan)) == sizeof(chan))
chan = ntohl(chan);
} else if (!strncmp(magic, "RIFF", 4) &&
wav_readhdr(fd, &apar, &datasz, &map)) {
fmt = FMT_WAV;
}
/* seek to start of audio data. wav_readhdr already took care
* of this for FMT_WAV.
*/
if (fmt == FMT_RAW || fmt == FMT_AU)
if (lseek(fd, (off_t)pos, SEEK_SET) == -1)
warn("lseek");
if ((hdl = sio_open(dev, SIO_PLAY, 0)) < 0) {
warnx("can't get sndio handle");
return(1);
}
sio_initpar(&par);
switch(fmt) {
case FMT_WAV:
par.rate = apar.rate;
par.pchan = apar.cmax - apar.cmin + 1;
par.sig = apar.sig;
par.bits = apar.bits;
par.le = apar.le;
break;
case FMT_AU:
par.rate = rate;
par.pchan = chan;
par.sig = 1;
par.bits = 16;
par.le = 1;
map = wav_ulawmap;
if (snd_fmt == 27)
map = wav_alawmap;
break;
case FMT_RAW:
default:
break;
}
spar = par;
if (!sio_setpar(hdl, &par) || !sio_getpar(hdl, &par)) {
warnx("can't set audio parameters");
/* only WAV could fail in previous aucat versions (unless
* the parameters returned by AUDIO_GETINFO would fail,
* which is unlikely)
*/
if (fmt == FMT_WAV)
return(1);
}
/* parameters may be silently modified. see audio(9)'s
* description of set_params. for compatability with previous
* aucat versions, continue running if something doesn't match.
*/
if (par.bits != spar.bits ||
par.sig != par.sig ||
par.le != spar.le ||
par.pchan != spar.pchan ||
/* devices may return a very close rate, such as 44099 when
* 44100 was requested. the difference is inaudible. allow
* 2% deviation as an example of how to cope.
*/
(par.rate > spar.rate * 1.02 || par.rate < spar.rate * 0.98)) {
warnx("format not supported");
}
if (!sio_start(hdl)) {
warnx("could not start sndio");
exit(1);
}
readsz = sizeof(buf);
if (map)
readsz /= 2;
while ((rd = read(fd, buf, readsz)) > 0) {
if (map) {
wav_conv(buf, rd, map);
rd *= 2;
}
if (sio_write(hdl, buf, rd) != rd)
warnx("sio_write: short write");
}
if (rd == -1)
warn("read");
sio_close(hdl);
(void) close(fd);
return(0);
}
|
