dotfiles/.bin/OLD/amused-monitor

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#!/usr/bin/env perl
#
# Copyright (c) 2022 Omar Polo <op@omarpolo.com>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
use strict;
use warnings;
use v5.12;
use open ":std", ":encoding(UTF-8)";
use utf8;
use Curses;
use POSIX qw(:sys_wait_h setlocale LC_ALL);
use Text::CharWidth qw(mbswidth);
use IO::Poll qw(POLLIN);
use Time::HiRes qw(clock_gettime CLOCK_MONOTONIC);
use Getopt::Long qw(:config bundling);
use Pod::Usage;
my $run = 1;
my $pfile;
my $trim = "";
my $pair_n = 1;
my @songs;
my $current_song;
my $playlist_cur;
my $playlist_max;
my $time_cur;
my $time_dur;
my $status;
my $mode;
my $last_lines;
sub round {
return int(0.5 + shift);
}
sub max {
my ($a, $b) = @_;
return $a > $b ? $a : $b;
}
sub excerpt {
my $lines = shift;
my @tmp;
my ($n, $idx, $cur) = (0, 0, -1);
open (my $fh, "-|", "amused", "show", "-p");
while (<$fh>) {
chomp;
s,$trim,,;
$tmp[$idx] = $_;
if (m/^>/) {
$cur = $n;
$current_song = s/^> //r;
}
$n++;
$idx = ++$idx % $lines;
last if $cur != -1 && $n - $cur > int($lines/2) &&
$#tmp == $lines-1;
}
close($fh);
return ("Empty playlist.") unless @tmp;
# reorder the entries
my @r;
my $len = $#tmp + 1;
$idx = $idx % $len;
for (1..$len) {
push @r, $tmp[$idx];
$idx = ++$idx % $len;
}
return @r;
}
sub playlist_numbers {
my ($cur, $tot, $found) = (0, 0, 0);
open (my $fh, "-|", "amused", "show", "-p");
while (<$fh>) {
$tot++;
$cur++ unless $found;
$found = 1 if m/^>/;
}
close($fh);
return ($cur, $tot);
}
sub status {
my ($pos, $dur, $mode);
open (my $fh, "-|", "amused", "status", "-f",
"status,time:raw,mode:oneline");
<$fh> =~ m/([a-z]+) (.*)/;
my ($status, $current_song) = ($1, $2);
while (<$fh>) {
chomp;
$pos = s/position //r if m/^position /;
$dur = s/duration //r if m/^duration /;
$mode = $_ if m/^repeat/;
}
close($fh);
return ($status, $current_song, $pos, $dur, $mode);
}
sub showtime {
my $seconds = shift;
my $str = "";
if ($seconds > 3600) {
my $hours = int($seconds / 3600);
$seconds -= $hours * 3600;
$str = sprintf("%02d:", $hours);
}
my $minutes = int($seconds / 60);
$seconds -= $minutes * 60;
$str .= sprintf "%02d:%02d", $minutes, $seconds;
return $str;
}
sub center {
my ($str, $pstr) = @_;
my $width = mbswidth($str);
return $str if $width > $COLS;
my $pre = round(($COLS - $width) / 2);
my $lpad = $pstr x $pre;
my $rpad = $pstr x ($COLS - $width - $pre);
return ($lpad, $str, $rpad);
}
sub offsets {
my ($y, $x, $cur, $max) = @_;
my ($pre, $c, $post) = center(" $cur / $max ", '-');
addstring $y, $x, "";
my $p = COLOR_PAIR($pair_n);
attron $p;
addstring $pre;
attroff $p;
addstring $c;
attron $p;
addstring $post;
attroff $p;
}
sub progress {
my ($y, $x, $pos, $dur) = @_;
my $pstr = showtime $pos;
my $dstr = showtime $dur;
my $len = $COLS - length($pstr) - length($dstr) - 4;
return if $len <= 0 or $dur <= 0;
my $filled = round($pos * $len / $dur);
addstring $y, $x, "$pstr [";
addstring "#" x $filled;
addstring " " x max($len - $filled, 0);
addstring "] $dstr";
}
sub show_status {
my ($y, $x, $status) = @_;
my ($pre, $c, $post) = center($status, ' ');
addstring $y, $x, $pre;
addstring $c;
addstring $post;
}
sub show_mode {
my ($y, $x, $mode) = @_;
my ($pre, $c, $post) = center($mode, ' ');
addstring $y, $x, $pre;
addstring $c;
addstring $post;
}
sub render {
erase;
if ($LINES < 4 || $COLS < 20) {
addstring "window too small";
refresh;
return;
}
my $song_pad = "";
my $longest = 0;
$longest = max $longest, length($_) foreach @songs;
if ($longest < $COLS) {
$song_pad = " " x (($COLS - $longest)/2);
}
my $line = 0;
map {
attron(A_BOLD) if m/^>/;
addstring $line++, 0, $song_pad . $_;
standend;
} @songs;
offsets $LINES - 4, 0, $playlist_cur, $playlist_max;
progress $LINES - 3, 0, $time_cur, $time_dur;
show_status $LINES - 2, 0, "$status $current_song";
show_mode $LINES - 1, 0, $mode;
refresh;
}
sub getsongs {
$last_lines = $LINES;
@songs = excerpt $LINES - 4;
}
sub getnums {
($playlist_cur, $playlist_max) = playlist_numbers;
}
sub save {
return unless defined $pfile;
open(my $fh, ">", $pfile);
open(my $ph, "-|", "amused", "show", "-p");
print $fh $_ while (<$ph>);
}
sub hevent {
my $fh = shift;
my $l = <$fh>;
die "monitor quit" unless defined($l);
$status = "playing" if $l =~ m/^play/;
$status = "paused" if $l =~ m/^pause/;
$status = "stopped" if $l =~ m/^stop/;
($time_cur, $time_dur) = ($1, $2) if $l =~ m/^seek (\d+) (\d+)/;
$mode = $1 if $l =~ m/^mode (.*)/;
getnums if $l =~ m/load|jump|next|prev/;
getsongs if $l =~ m/load|jump|next|prev/;
}
sub hinput {
my ($ch, $key) = getchar;
if (defined $key) {
if ($key == KEY_BACKSPACE) {
system "amused", "seek", "0";
}
} elsif (defined $ch) {
if ($ch eq " ") {
system "amused", "toggle";
} elsif ($ch eq "<" or $ch eq "p") {
system "amused", "prev";
} elsif ($ch eq ">" or $ch eq "n") {
system "amused", "next";
} elsif ($ch eq ",") {
system "amused", "seek", "-5";
} elsif ($ch eq ".") {
system "amused", "seek", "+5";
} elsif ($ch eq "S") {
system "amused show | sort -u | amused load";
} elsif ($ch eq "R") {
system "amused show | sort -R | amused load";
} elsif ($ch eq "s") {
save;
} elsif ($ch eq "q") {
$run = 0;
} elsif ($ch eq "\cH") {
system "amused", "seek", "0"
}
}
}
GetOptions(
"p:s" => \$pfile,
"t:s" => \$trim,
) or pod2usage(1);
my $mpid = open(my $monitor, "-|", "amused", "monitor")
or die "can't spawn amused monitor";
setlocale(LC_ALL, "");
initscr;
start_color;
use_default_colors;
init_pair $pair_n, 250, -1;
timeout 1000;
scrollok 0;
curs_set 0;
keypad 1;
my $poll = IO::Poll->new();
$poll->mask(\*STDIN => POLLIN);
$poll->mask($monitor => POLLIN);
if (`uname` =~ "OpenBSD") {
use OpenBSD::Pledge;
use OpenBSD::Unveil;
my $prog = `which amused`;
chomp $prog;
unveil($prog, 'rx') or die "unveil $prog: $!";
if (defined($pfile)) {
unveil($pfile, 'wc') or die "unveil $pfile: $!";
pledge qw(stdio wpath cpath tty proc exec) or die "pledge: $!";
} else {
pledge qw(stdio tty proc exec) or die "pledge: $!";
}
}
getsongs;
getnums;
($status, $current_song, $time_cur, $time_dur, $mode) = status;
render;
while ($run) {
$poll->poll();
hinput if $poll->events(\*STDIN) & POLLIN;
hevent $monitor if $poll->events($monitor) & POLLIN;
getsongs if $LINES != $last_lines;
render;
}
endwin;
save;
kill 'INT', $mpid;
wait;
__END__
=pod
=head1 NAME
amused-monitor - curses interface for amused(1)
=head1 SYNOPSIS
B<amused-monitor> [B<-p> I<playlist>] [B<-t> I<string>]
=head1 DESCRIPTION
amused-monitor is a simple curses interface for amused(1).
The following options are available:
=over 12
=item B<-p> I<playlist>
Save the current playling queue to the file I<playlist> upon exit or
I<s> key.
=item B<-t> I<string>
Trim out the given I<string> from every song in the playlist view.
=back
The following key-bindings are available:
=over 8
=item backspace or C-h
Seek back to the beginning of the track.
=item space
Toggle play/pause.
=item < or p
Play previous song.
=item > or n
Play next song.
=item ,
Seek backward by five seconds.
=item .
Seek forward by five seconds.
=item R
Randomize the playlist.
=item S
Sort the playlist.
=item s
Save the status to the file given with the B<-p> flag.
=item q
Quit.
=back
=head1 SEE ALSO
amused(1)
=cut