Annotation of mp3/bin/mixer.pl, Revision 1.3
1.1 andrew 1: #!/usr/bin/perl -Tw
1.3 ! andrew 2: # $RedRiver: mixer.pl,v 1.2 2006/08/12 00:14:53 andrew Exp $
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 = $2;
60:
61: print "Content-Type: text/html\n\n";
62: print "<html>\n<head>\n\t<meta HTTP-EQUIV='Pragma' CONTENT='no-cache'> ";
63:
1.3 ! andrew 64: my ($prefix, $New_Vol_Left, $New_Vol_Right) = split /\&/, $ENV{'QUERY_STRING'};
! 65: if ($New_Vol_Left || $New_Vol_Right) {
! 66: $New_Vol_Left =~ s/%(..)/pack("c",hex($1))/ge;
! 67: $New_Vol_Right =~ s/%(..)/pack("c",hex($1))/ge;
! 68: print "<meta HTTP-EQUIV=Refresh CONTENT=\"1; URL=mixer.pl?" . EncodeURL($prefix) . "\">";
! 69: }
! 70:
! 71: $New_Vol_Left ||= $Cur_Vol_Left;
! 72: $New_Vol_Right ||= $Cur_Vol_Right;
! 73:
! 74: if ($New_Vol_Left =~ /(\d+)/) { $New_Vol_Left = $1; }
! 75: if ($New_Vol_Right =~ /(\d+)/) { $New_Vol_Right = $1; }
! 76:
! 77: if ($prefix) {
! 78: $prefix =~ s/%(..)/pack("c",hex($1))/ge;
! 79: } else {
! 80: $prefix ='';
1.1 andrew 81: }
82:
83: print <<EOL;
84:
85: <style type="text/css" media="screen">
86: <!--
87: a.down:link { color: red; text-decoration: none; }
88: a.down:visited { color: red; text-decoration: none; }
89: a.down:hover { color: red; text-decoration: none; }
90: a.down:active { color: red; text-decoration: none; }
91: a.up:link { color: blue; text-decoration: none; }
92: a.up:visited { color: blue; text-decoration: none; }
93: a.up:hover { color: blue; text-decoration: none; }
94: a.up:active { color: blue; text-decoration: none; }
95: -->
96: </style>
97:
98: EOL
99:
100: print "<title>Volume Mixer</title></head>\n<body>\n\n";
101:
102: Print_Nav();
103:
1.3 ! andrew 104: unless ($prefix) {
1.1 andrew 105: print "Volume - ";
106:
1.3 ! andrew 107: #print "New_Vol $New_Vol_Left:$New_Vol_Right<BR>\n";
1.1 andrew 108:
109: my @nav;
110: foreach my $vol (@Vols) {
111: if ($$vol[0] == $New_Vol_Left) {
1.3 ! andrew 112: push @nav, "<B><A HREF='$me?" . EncodeURL($prefix) . '&' . "$$vol[0]&$$vol[1]' class=up>$$vol[0]</A></B>\n";
1.1 andrew 113: } elsif ($$vol[0] < $New_Vol_Left) {
1.3 ! andrew 114: push @nav, "<A HREF='$me?" . EncodeURL($prefix) . '&' . "$$vol[0]&$$vol[1]' class=up>}</A>\n";
1.1 andrew 115: } elsif ($$vol[0] > $New_Vol_Left) {
1.3 ! andrew 116: push @nav, "<A HREF='$me?" . EncodeURL($prefix) . '&' . "$$vol[0]&$$vol[1]' class=down>]</A>\n";
1.1 andrew 117: }
118: #print "$vol - $$vol[0] - $$vol[1]<br>\n";
119: }
120: print join " ", @nav;
121: #print "<br>\n";
122:
123: Set_Vol($Cur_Vol_Left, $Cur_Vol_Right, $New_Vol_Left, $New_Vol_Right);
1.3 ! andrew 124: }
1.1 andrew 125:
126: print "</body>\n</head>\n</html>\n";
127:
128:
129:
130: sub Set_Vol
131: {
132: my $old_vol_right = shift;
133: my $old_vol_left = shift;
134: my $new_vol_left = shift;
135: my $new_vol_right = shift;
136:
137: my $old_vol;
138: my $new_vol;
139: if (($old_vol_left + $old_vol_right) > ($new_vol_left + $new_vol_right)) {
140: $old_vol = $old_vol_left > $old_vol_right ? $old_vol_left : $old_vol_right;
141: $new_vol = $new_vol_left < $new_vol_right ? $new_vol_left : $new_vol_right;
142: } else {
143: $old_vol = $old_vol_left < $old_vol_right ? $old_vol_left : $old_vol_right;
144: $new_vol = $new_vol_left > $new_vol_right ? $new_vol_left : $new_vol_right;
145: }
146:
1.3 ! andrew 147: #print "Old: $old_vol - New: $new_vol<br>\n";
1.1 andrew 148:
149: my $Set_Vol;
150:
151: foreach my $vol ($old_vol < $new_vol ? $old_vol..$new_vol : reverse $new_vol..$old_vol) {
1.3 ! andrew 152: #print "$vol<br>\n";
1.1 andrew 153: $Set_Vol = `$mixerctl -w outputs.master=$vol,$vol`;
1.3 ! andrew 154: #print $Set_Vol . "<br>\n";
1.1 andrew 155: }
156: return $Set_Vol;
157: }
158:
159:
160:
161: ########################################################################
162: # *** EncodeURL: %encodes the parameters of the URL
163: sub EncodeURL {
164: my $strURL = shift;
165: $strURL =~ s/(\W)/sprintf("%%%x", ord($1))/eg;
166: return $strURL;
167: }
168:
169: #########################################################################
170: # My name
171: sub MyName {
172: my @filename = (split /\//, $0);
173: pop @filename;
174: }
175:
176:
177: #######################################################################
178: # Bail: this subrouting dies and displays the error to the browser.
179: # gotten from the example in the O'Reilly
180: # _Learning_Perl_on_Win32_Systems_
181: sub bail {
182: my $error = shift;
183: print "\n\nUnexpected Error: <b>$error</b><br>\n";
184: print "In " . __FILE__ . "\n";
185: die;
186: exit;
187: }
188: sub Print_Nav
189: {
190: open FILE, 'nav.inc' or die "\n\ncouldn't open FILE nav.inc: $!";
191: while (<FILE>) {
1.3 ! andrew 192: s/%PREFIX%/$prefix/g;
1.1 andrew 193: print;
194: }
195: close FILE;
196: }
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