/
esd.c
169 lines (141 loc) · 3.46 KB
/
esd.c
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
/*
esd: audio output for ESounD (highly untested nowadays (?))
copyright ?-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
see COPYING and AUTHORS files in distribution or http://mpg123.org
initially written by Eric B. Mitchell ("esd port" should be this file...)
*/
/* First the common header, including config.h
...this is important for stuff like _FILE_OFFSET_BITS */
#include "out123_int.h"
#include <esd.h>
#include <errno.h>
#include <assert.h>
#ifdef SOLARIS
#include <stropts.h>
#include <sys/conf.h>
#endif
#ifdef NETBSD
#include <sys/ioctl.h>
#include <sys/audioio.h>
#endif
#include "debug.h"
static unsigned esd_rate = 0, esd_format = 0, esd_channels = 0;
static int open_esound(out123_handle *ao)
{
esd_format_t format = ESD_STREAM | ESD_PLAY;
if (!esd_rate)
{
int esd;
esd_server_info_t *info;
esd_format_t fmt;
if ((esd = esd_open_sound(NULL)) >= 0)
{
info = esd_get_server_info(esd);
esd_rate = info->rate;
fmt = info->format;
esd_free_server_info(info);
esd_close(esd);
}
else
{
esd_rate = esd_audio_rate;
fmt = esd_audio_format;
}
esd_format = MPG123_ENC_UNSIGNED_8;
if ((fmt & ESD_MASK_BITS) == ESD_BITS16)
esd_format |= MPG123_ENC_SIGNED_16;
esd_channels = fmt & ESD_MASK_CHAN;
}
if (ao->format == -1)
ao->format = esd_format;
else if (!(ao->format & esd_format))
{
if(!AOQUIET)
error1("Unsupported audio format: %d\n", ao->format);
errno = EINVAL;
return -1;
}
if (ao->format & MPG123_ENC_SIGNED_16)
format |= ESD_BITS16;
else if (ao->format & MPG123_ENC_UNSIGNED_8)
format |= ESD_BITS8;
else assert(0);
if (ao->channels == -1) ao->channels = 2;
else if (ao->channels <= 0 || ao->channels > esd_channels)
{
if(!AOQUIET)
error1("Unsupported no of channels: %d\n", ao->channels);
errno = EINVAL;
return -1;
}
if (ao->channels == 1)
format |= ESD_MONO;
else if (ao->channels == 2)
format |= ESD_STEREO;
else assert(0);
if (ao->rate == -1) ao->rate = esd_rate;
else if (ao->rate > esd_rate)
return -1;
ao->fn = esd_play_stream_fallback(format, ao->rate, ao->device, "mpg123");
return (ao->fn);
}
static int get_formats_esound (out123_handle *ao)
{
if (0 < ao->channels && ao->channels <= esd_channels
&& 0 < ao->rate && ao->rate <= esd_rate)
{
return esd_format;
} else {
return -1;
}
}
static int write_esound(out123_handle *ao,unsigned char *buf,int len)
{
return write(ao->fn,buf,len);
}
static int close_esound(out123_handle *ao)
{
close (ao->fn);
return 0;
}
#ifdef SOLARIS
static void flush_esound (out123_handle *ao)
{
ioctl (ao->fn, I_FLUSH, FLUSHRW);
}
#else
#ifdef NETBSD
static void flush_esound (out123_handle *ao)
{
ioctl (ao->fn, AUDIO_FLUSH, 0);
}
#else
/* Dunno what to do on Linux and Cygwin, but the func must be at least defined! */
static void flush_esound (out123_handle *ao)
{
}
#endif
#endif
static int init_esound(out123_handle* ao)
{
if (ao==NULL) return -1;
/* Set callbacks */
ao->open = open_esound;
ao->flush = flush_esound;
ao->write = write_esound;
ao->get_formats = get_formats_esound;
ao->close = close_esound;
/* Success */
return 0;
}
/*
Module information data structure
*/
mpg123_module_t mpg123_output_module_info = {
/* api_version */ MPG123_MODULE_API_VERSION,
/* name */ "esd",
/* description */ "Output audio using ESounD (The Enlightened Sound Daemon).",
/* revision */ "$Rev: 3915 $",
/* handle */ NULL,
/* init_output */ init_esound,
};