Annotation of mp3/bin/mixer.pl, Revision 1.2
1.1 andrew 1: #!/usr/bin/perl -Tw
1.2 ! andrew 2: # $RedRiver$
1.1 andrew 3: ########################################################################
4: # Mixer.pl *** Changes volume on the MP3 player
5: #
6: # 10/11/2002 4:26PM
7: # Written by andrew fresh <andrew@mad-techies.org>
8: ########################################################################
9: use strict;
10: use diagnostics;
11:
12: my $mixerctl = '/usr/bin/mixerctl';
13:
14: my $me = MyName();
15:
16: delete $ENV{PATH} if exists $ENV{PATH};
17:
18:
19: my @Vols = (
20: [ 7, 7],
21: [ 15, 15],
22: [ 23, 23],
23: [ 31, 31],
24: [ 39, 39],
25: [ 47, 47],
26: [ 55, 55],
27: [ 63, 63],
28: [ 71, 71],
29: [ 79, 79],
30: [ 87, 87],
31: [ 95, 95],
32: [103, 103],
33: [111, 111],
34: [119, 119],
35: [127, 127],
36: [135, 135],
37: [143, 143],
38: [151, 151],
39: [159, 159],
40: [167, 167],
41: [175, 175],
42: [183, 183],
43: [191, 191],
44: [199, 199],
45: [207, 207],
46: [215, 215],
47: [223, 223],
48: [231, 231],
49: [239, 239],
50: [247, 247],
51: [255, 255],
52: );
53:
54:
55: my $Cur_Vol = `$mixerctl outputs.master`;
56: #»print "Cur_Vol $Cur_Vol<BR>\n";
57: $Cur_Vol =~ /outputs.master=(\d+),(\d+)/i;
58: my $Cur_Vol_Left = $1;
59: my $Cur_Vol_Right = $2;
60:
61: print "Content-Type: text/html\n\n";
62: print "<html>\n<head>\n\t<meta HTTP-EQUIV='Pragma' CONTENT='no-cache'> ";
63:
64: my $New_Vol = "$Cur_Vol_Left&$Cur_Vol_Right";
65: if ($ENV{'QUERY_STRING'}) {
66: print "<meta HTTP-EQUIV=Refresh CONTENT=\"1; URL=mixer.pl\">";
67: $New_Vol = $ENV{'QUERY_STRING'};
68: }
69:
70: print <<EOL;
71:
72: <style type="text/css" media="screen">
73: <!--
74: a.down:link { color: red; text-decoration: none; }
75: a.down:visited { color: red; text-decoration: none; }
76: a.down:hover { color: red; text-decoration: none; }
77: a.down:active { color: red; text-decoration: none; }
78: a.up:link { color: blue; text-decoration: none; }
79: a.up:visited { color: blue; text-decoration: none; }
80: a.up:hover { color: blue; text-decoration: none; }
81: a.up:active { color: blue; text-decoration: none; }
82: -->
83: </style>
84:
85: EOL
86:
87: print "<title>Volume Mixer</title></head>\n<body>\n\n";
88:
89: Print_Nav();
90:
91: print "Volume - ";
92:
93:
94: #»print "New_Vol $New_Vol<BR>\n";
95: $New_Vol =~ /(\d+)&(\d+)/;
96: my $New_Vol_Left = $1;
97: my $New_Vol_Right = $2;
98:
99: my @nav;
100: foreach my $vol (@Vols) {
101: if ($$vol[0] == $New_Vol_Left) {
102: push @nav, "<B><A HREF='$me?$$vol[0]&$$vol[1]' class=up>$$vol[0]</A></B>\n";
103: } elsif ($$vol[0] < $New_Vol_Left) {
104: push @nav, "<A HREF='$me?$$vol[0]&$$vol[1]' class=up>}</A>\n";
105: } elsif ($$vol[0] > $New_Vol_Left) {
106: push @nav, "<A HREF='$me?$$vol[0]&$$vol[1]' class=down>]</A>\n";
107: }
108: #print "$vol - $$vol[0] - $$vol[1]<br>\n";
109: }
110: print join " ", @nav;
111: #print "<br>\n";
112:
113: Set_Vol($Cur_Vol_Left, $Cur_Vol_Right, $New_Vol_Left, $New_Vol_Right);
114:
115: print "</body>\n</head>\n</html>\n";
116:
117:
118:
119: sub Set_Vol
120: {
121: my $old_vol_right = shift;
122: my $old_vol_left = shift;
123: my $new_vol_left = shift;
124: my $new_vol_right = shift;
125:
126: my $old_vol;
127: my $new_vol;
128: if (($old_vol_left + $old_vol_right) > ($new_vol_left + $new_vol_right)) {
129: $old_vol = $old_vol_left > $old_vol_right ? $old_vol_left : $old_vol_right;
130: $new_vol = $new_vol_left < $new_vol_right ? $new_vol_left : $new_vol_right;
131: } else {
132: $old_vol = $old_vol_left < $old_vol_right ? $old_vol_left : $old_vol_right;
133: $new_vol = $new_vol_left > $new_vol_right ? $new_vol_left : $new_vol_right;
134: }
135:
136: #»print "Old: $old_vol - New: $new_vol<br>\n";
137:
138: my $Set_Vol;
139:
140: foreach my $vol ($old_vol < $new_vol ? $old_vol..$new_vol : reverse $new_vol..$old_vol) {
141: #»print "$vol<br>\n";
142: $Set_Vol = `$mixerctl -w outputs.master=$vol,$vol`;
143: #»print $Set_Vol . "<br>\n";
144: }
145: return $Set_Vol;
146: }
147:
148:
149:
150: ########################################################################
151: # *** EncodeURL: %encodes the parameters of the URL
152: sub EncodeURL {
153: my $strURL = shift;
154: $strURL =~ s/(\W)/sprintf("%%%x", ord($1))/eg;
155: return $strURL;
156: }
157:
158: #########################################################################
159: # My name
160: sub MyName {
161: my @filename = (split /\//, $0);
162: pop @filename;
163: }
164:
165:
166: #######################################################################
167: # Bail: this subrouting dies and displays the error to the browser.
168: # gotten from the example in the O'Reilly
169: # _Learning_Perl_on_Win32_Systems_
170: sub bail {
171: my $error = shift;
172: print "\n\nUnexpected Error: <b>$error</b><br>\n";
173: print "In " . __FILE__ . "\n";
174: die;
175: exit;
176: }
177: sub Print_Nav
178: {
179: open FILE, 'nav.inc' or die "\n\ncouldn't open FILE nav.inc: $!";
180: while (<FILE>) {
181: print;
182: }
183: close FILE;
184: }
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