line |
stmt |
bran |
cond |
sub |
pod |
time |
code |
1
|
|
|
|
|
|
|
# -*- cperl -*- |
2
|
|
|
|
|
|
|
|
3
|
|
|
|
|
|
|
# Audio::OSS - Less DWIM, more useful than Audio::DSP |
4
|
|
|
|
|
|
|
# |
5
|
|
|
|
|
|
|
# Copyright (c) 2000 Cepstral LLC. All rights Reserved. |
6
|
|
|
|
|
|
|
# |
7
|
|
|
|
|
|
|
# This module is free software; you can redistribute it and/or modify |
8
|
|
|
|
|
|
|
# it under the same terms as Perl itself. |
9
|
|
|
|
|
|
|
# |
10
|
|
|
|
|
|
|
# Written by David Huggins-Daines |
11
|
|
|
|
|
|
|
|
12
|
|
|
|
|
|
|
package Audio::OSS; |
13
|
1
|
|
|
1
|
|
613
|
use strict; |
|
1
|
|
|
|
|
2
|
|
|
1
|
|
|
|
|
35
|
|
14
|
|
|
|
|
|
|
|
15
|
|
|
|
|
|
|
# We should maybe generate these in Makefile.PL, but they don't use |
16
|
|
|
|
|
|
|
# any types that are likely to change alignment or size between |
17
|
|
|
|
|
|
|
# platforms. |
18
|
1
|
|
|
1
|
|
4
|
use constant CINFO_TMPL => 'lll'; |
|
1
|
|
|
|
|
2
|
|
|
1
|
|
|
|
|
67
|
|
19
|
1
|
|
|
1
|
|
5
|
use constant BINFO_TMPL => 'llll'; |
|
1
|
|
|
|
|
9
|
|
|
1
|
|
|
|
|
35
|
|
20
|
1
|
|
|
1
|
|
4
|
use constant MINFO_TMPL => 'a16 a32 l'; |
|
1
|
|
|
|
|
2
|
|
|
1
|
|
|
|
|
39
|
|
21
|
|
|
|
|
|
|
|
22
|
1
|
|
|
1
|
|
5
|
use vars qw($VERSION @ISA @EXPORT_OK %EXPORT_TAGS @DevNames); |
|
1
|
|
|
|
|
1
|
|
|
1
|
|
|
|
|
292
|
|
23
|
|
|
|
|
|
|
require Exporter; |
24
|
|
|
|
|
|
|
@ISA = qw(Exporter); |
25
|
|
|
|
|
|
|
|
26
|
|
|
|
|
|
|
BEGIN { |
27
|
|
|
|
|
|
|
# Defines constants, which is why it needs to be done in BEGIN{} |
28
|
|
|
|
|
|
|
# Also creates @EXPORT_OK, hence the push below |
29
|
1
|
|
|
1
|
|
539
|
require Audio::OSS::Constants; |
30
|
|
|
|
|
|
|
|
31
|
|
|
|
|
|
|
# Special-case a few useful constants |
32
|
1
|
50
|
|
|
|
10
|
unless (defined(&AFMT_S16_NE)) { |
33
|
0
|
0
|
|
|
|
0
|
if (unpack("L", pack("C*", 1, 2, 3, 4)) == 0x01020304) { |
34
|
0
|
|
|
|
|
0
|
*AFMT_S16_NE = sub () { AFMT_S16_BE() }; |
|
0
|
|
|
|
|
0
|
|
35
|
|
|
|
|
|
|
} else { |
36
|
0
|
|
|
|
|
0
|
*AFMT_S16_NE = sub () { AFMT_S16_LE() }; |
|
0
|
|
|
|
|
0
|
|
37
|
|
|
|
|
|
|
} |
38
|
|
|
|
|
|
|
} |
39
|
|
|
|
|
|
|
# Pseudo-ioctls (we assume that various OSes will form these the |
40
|
|
|
|
|
|
|
# same way...) |
41
|
1
|
|
|
0
|
|
8
|
*SOUND_MIXER_READ = sub () { SOUND_MIXER_READ_VOLUME() - SOUND_MIXER_VOLUME() }; |
|
0
|
|
|
|
|
0
|
|
42
|
1
|
|
|
0
|
|
4
|
*SOUND_MIXER_WRITE = sub () { SOUND_MIXER_WRITE_VOLUME() - SOUND_MIXER_VOLUME() }; |
|
0
|
|
|
|
|
0
|
|
43
|
1
|
|
|
|
|
2
|
push @EXPORT_OK, qw(SOUND_MIXER_READ SOUND_MIXER_WRITE); |
44
|
1
|
|
|
|
|
1
|
push @{$EXPORT_TAGS{mixer}}, qw(SOUND_MIXER_READ SOUND_MIXER_WRITE); |
|
1
|
|
|
|
|
514
|
|
45
|
|
|
|
|
|
|
} |
46
|
|
|
|
|
|
|
|
47
|
|
|
|
|
|
|
# Don't bother getting this from the header file |
48
|
|
|
|
|
|
|
@DevNames = qw( |
49
|
|
|
|
|
|
|
vol bass treble synth pcm speaker line |
50
|
|
|
|
|
|
|
mic cd mix pcm2 rec igain ogain line1 line2 |
51
|
|
|
|
|
|
|
line3 dig1 dig2 dig3 phin phout video radio monitor |
52
|
|
|
|
|
|
|
); |
53
|
|
|
|
|
|
|
|
54
|
|
|
|
|
|
|
# Use push, because BEGIN blocks may frob these |
55
|
|
|
|
|
|
|
push @EXPORT_OK, qw(dsp_sync dsp_reset set_fragment get_fmt |
56
|
|
|
|
|
|
|
get_outbuf_ptr get_inbuf_ptr |
57
|
|
|
|
|
|
|
get_outbuf_info get_inbuf_info |
58
|
|
|
|
|
|
|
mixer_read mixer_write @DevNames); |
59
|
|
|
|
|
|
|
push @{$EXPORT_TAGS{funcs}}, |
60
|
|
|
|
|
|
|
qw[ |
61
|
|
|
|
|
|
|
dsp_sync |
62
|
|
|
|
|
|
|
dsp_reset |
63
|
|
|
|
|
|
|
set_fragment |
64
|
|
|
|
|
|
|
get_fmt |
65
|
|
|
|
|
|
|
get_outbuf_ptr |
66
|
|
|
|
|
|
|
get_inbuf_ptr |
67
|
|
|
|
|
|
|
get_outbuf_info |
68
|
|
|
|
|
|
|
get_inbuf_info |
69
|
|
|
|
|
|
|
mixer_read |
70
|
|
|
|
|
|
|
mixer_write |
71
|
|
|
|
|
|
|
]; |
72
|
|
|
|
|
|
|
|
73
|
|
|
|
|
|
|
$VERSION=0.05_01; |
74
|
|
|
|
|
|
|
|
75
|
|
|
|
|
|
|
sub dsp_reset { |
76
|
0
|
|
|
0
|
0
|
|
my $dsp = shift; |
77
|
0
|
0
|
|
|
|
|
ioctl $dsp, SNDCTL_DSP_SYNC, 0 or return undef; |
78
|
0
|
|
|
|
|
|
ioctl $dsp, SNDCTL_DSP_RESET, 0; |
79
|
|
|
|
|
|
|
} |
80
|
|
|
|
|
|
|
|
81
|
|
|
|
|
|
|
sub dsp_sync { |
82
|
0
|
|
|
0
|
0
|
|
my $dsp = shift; |
83
|
0
|
|
|
|
|
|
ioctl $dsp, SNDCTL_DSP_SYNC, 0; |
84
|
|
|
|
|
|
|
} |
85
|
|
|
|
|
|
|
|
86
|
|
|
|
|
|
|
sub get_fmt { |
87
|
0
|
|
|
0
|
0
|
|
my $dsp = shift; |
88
|
0
|
|
|
|
|
|
my $sfmt = pack "L", AFMT_QUERY; |
89
|
0
|
0
|
|
|
|
|
ioctl $dsp, SNDCTL_DSP_SETFMT, $sfmt or return undef; |
90
|
0
|
|
|
|
|
|
return unpack "L", $sfmt; |
91
|
|
|
|
|
|
|
} |
92
|
|
|
|
|
|
|
|
93
|
|
|
|
|
|
|
sub set_fragment { |
94
|
0
|
|
|
0
|
0
|
|
my ($dsp, $shift, $max) = @_; |
95
|
|
|
|
|
|
|
|
96
|
|
|
|
|
|
|
# This is not really documented, but the code of the sound drivers |
97
|
|
|
|
|
|
|
# says that this is two halfwords packed together in host byte |
98
|
|
|
|
|
|
|
# order, the MSW being the shift (assuming this means size log 2), |
99
|
|
|
|
|
|
|
# the lower being the maximum number. In general it seems that |
100
|
|
|
|
|
|
|
# shift must be 4 <= shift < 16, maxfrags must be >= 4. |
101
|
|
|
|
|
|
|
|
102
|
0
|
|
|
|
|
|
my $sfrag = pack "L", (($max << 16) | $shift); |
103
|
0
|
|
|
|
|
|
ioctl $dsp, SNDCTL_DSP_SETFRAGMENT, $sfrag; |
104
|
|
|
|
|
|
|
} |
105
|
|
|
|
|
|
|
|
106
|
|
|
|
|
|
|
sub get_outbuf_ptr { |
107
|
0
|
|
|
0
|
0
|
|
my $dsp = shift; |
108
|
0
|
|
|
|
|
|
my $cinfo = pack CINFO_TMPL; |
109
|
0
|
0
|
|
|
|
|
ioctl($dsp, SNDCTL_DSP_GETOPTR, $cinfo) or return undef; |
110
|
0
|
|
|
|
|
|
return unpack CINFO_TMPL, $cinfo; |
111
|
|
|
|
|
|
|
} |
112
|
|
|
|
|
|
|
|
113
|
|
|
|
|
|
|
sub get_inbuf_ptr { |
114
|
0
|
|
|
0
|
0
|
|
my $dsp = shift; |
115
|
0
|
|
|
|
|
|
my $cinfo = pack CINFO_TMPL; |
116
|
0
|
0
|
|
|
|
|
ioctl($dsp, SNDCTL_DSP_GETIPTR, $cinfo) or return undef; |
117
|
0
|
|
|
|
|
|
return unpack CINFO_TMPL, $cinfo; |
118
|
|
|
|
|
|
|
} |
119
|
|
|
|
|
|
|
|
120
|
|
|
|
|
|
|
sub get_outbuf_info { |
121
|
0
|
|
|
0
|
0
|
|
my $dsp = shift; |
122
|
0
|
|
|
|
|
|
my $binfo = pack BINFO_TMPL; |
123
|
0
|
0
|
|
|
|
|
ioctl($dsp, SNDCTL_DSP_GETOSPACE, $binfo) or return undef; |
124
|
0
|
|
|
|
|
|
return unpack BINFO_TMPL, $binfo; |
125
|
|
|
|
|
|
|
} |
126
|
|
|
|
|
|
|
|
127
|
|
|
|
|
|
|
sub get_inbuf_info { |
128
|
0
|
|
|
0
|
0
|
|
my $dsp = shift; |
129
|
0
|
|
|
|
|
|
my $binfo = pack BINFO_TMPL; |
130
|
0
|
0
|
|
|
|
|
ioctl($dsp, SNDCTL_DSP_GETISPACE, $binfo) or return undef; |
131
|
0
|
|
|
|
|
|
return unpack BINFO_TMPL, $binfo; |
132
|
|
|
|
|
|
|
} |
133
|
|
|
|
|
|
|
|
134
|
|
|
|
|
|
|
# Some constants may not be defined, don't define their subs either |
135
|
|
|
|
|
|
|
BEGIN { |
136
|
1
|
50
|
|
1
|
|
4
|
if (defined &SOUND_MIXER_INFO) { |
137
|
|
|
|
|
|
|
*get_mixer_info = sub { |
138
|
0
|
|
|
0
|
|
0
|
my $mixer = shift; |
139
|
0
|
|
|
|
|
0
|
my $minfo = pack MINFO_TMPL; |
140
|
0
|
0
|
|
|
|
0
|
ioctl($mixer, SOUND_MIXER_INFO(), $minfo) or return undef; |
141
|
0
|
|
|
|
|
0
|
return unpack MINFO_TMPL, $minfo; |
142
|
1
|
|
|
|
|
3
|
}; |
143
|
1
|
|
|
|
|
2
|
push @EXPORT_OK, 'get_mixer_info'; |
144
|
1
|
|
|
|
|
1
|
push @{$EXPORT_TAGS{funcs}}, 'get_mixer_info'; |
|
1
|
|
|
|
|
29
|
|
145
|
|
|
|
|
|
|
} |
146
|
|
|
|
|
|
|
} |
147
|
|
|
|
|
|
|
|
148
|
|
|
|
|
|
|
# Templated ioctls that just read or write a single integer value |
149
|
|
|
|
|
|
|
BEGIN { |
150
|
1
|
|
|
1
|
|
5
|
no strict 'refs'; |
|
1
|
|
|
|
|
1
|
|
|
1
|
|
|
|
|
137
|
|
151
|
1
|
|
|
1
|
|
3
|
my @rw_ioctls = ( |
152
|
|
|
|
|
|
|
dsp_get_caps => SNDCTL_DSP_GETCAPS, |
153
|
|
|
|
|
|
|
get_supported_fmts => SNDCTL_DSP_GETFMTS, |
154
|
|
|
|
|
|
|
set_sps => SNDCTL_DSP_SPEED, |
155
|
|
|
|
|
|
|
set_fmt => SNDCTL_DSP_SETFMT, |
156
|
|
|
|
|
|
|
set_stereo => SNDCTL_DSP_STEREO, |
157
|
|
|
|
|
|
|
mixer_read_devmask => SOUND_MIXER_READ_DEVMASK, |
158
|
|
|
|
|
|
|
mixer_read_recmask => SOUND_MIXER_READ_RECMASK, |
159
|
|
|
|
|
|
|
mixer_read_stereodevs => SOUND_MIXER_READ_STEREODEVS, |
160
|
|
|
|
|
|
|
mixer_read_caps => SOUND_MIXER_READ_CAPS, |
161
|
|
|
|
|
|
|
); |
162
|
1
|
|
|
|
|
4
|
while (my ($sub, $ioctl) = splice @rw_ioctls, 0, 2) { |
163
|
|
|
|
|
|
|
*$sub = sub { |
164
|
0
|
|
|
0
|
|
0
|
my $fh = shift; |
165
|
0
|
|
0
|
|
|
0
|
my $in = shift || 0; |
166
|
0
|
|
|
|
|
0
|
my $out = pack "L", $in; |
167
|
0
|
0
|
|
|
|
0
|
ioctl($fh, $ioctl, $out) or return undef; |
168
|
0
|
|
|
|
|
0
|
return unpack "L", $out; |
169
|
9
|
|
|
|
|
40
|
}; |
170
|
9
|
|
|
|
|
11
|
push @EXPORT_OK, $sub; |
171
|
9
|
|
|
|
|
8
|
push @{$EXPORT_TAGS{funcs}}, $sub; |
|
9
|
|
|
|
|
165
|
|
172
|
|
|
|
|
|
|
} |
173
|
|
|
|
|
|
|
} |
174
|
|
|
|
|
|
|
|
175
|
|
|
|
|
|
|
sub mixer_read { |
176
|
0
|
|
|
0
|
0
|
|
my ($mixer, $channel) = @_; |
177
|
0
|
|
|
|
|
|
my $vol = pack "L"; |
178
|
0
|
0
|
|
|
|
|
ioctl($mixer, SOUND_MIXER_READ + $channel, $vol) or return undef; |
179
|
0
|
|
|
|
|
|
return unpack "L", $vol; |
180
|
|
|
|
|
|
|
} |
181
|
|
|
|
|
|
|
|
182
|
|
|
|
|
|
|
sub mixer_write { |
183
|
0
|
|
|
0
|
0
|
|
my ($mixer, $channel, $left, $right) = @_; |
184
|
0
|
|
|
|
|
|
my $vol = pack("L", $left | ($right << 8)); |
185
|
0
|
0
|
|
|
|
|
ioctl($mixer, SOUND_MIXER_WRITE + $channel, $vol) or return undef; |
186
|
0
|
|
|
|
|
|
return unpack "L", $vol; |
187
|
|
|
|
|
|
|
} |
188
|
|
|
|
|
|
|
|
189
|
|
|
|
|
|
|
1; |
190
|
|
|
|
|
|
|
__END__ |