| 1 |
=head1 NAME |
| 2 |
|
| 3 |
AnyEvent::MPV - remote control mpv (https://mpv.io) |
| 4 |
|
| 5 |
=head1 SYNOPSIS |
| 6 |
|
| 7 |
use AnyEvent::MPV; |
| 8 |
|
| 9 |
=head1 DESCRIPTION |
| 10 |
|
| 11 |
This module is an L<AnyEvent> user, you need to make sure that you use and |
| 12 |
run a supported event loop. |
| 13 |
|
| 14 |
=cut |
| 15 |
|
| 16 |
package AnyEvent::MPV; |
| 17 |
|
| 18 |
use common::sense; |
| 19 |
|
| 20 |
use AnyEvent (); |
| 21 |
use AnyEvent::Util (); |
| 22 |
|
| 23 |
our $JSON = eval { require JSON::XS; JSON::XS:: } |
| 24 |
|| do { require JSON::PP; JSON::PP:: }; |
| 25 |
|
| 26 |
our $VERSION = '0.1'; |
| 27 |
|
| 28 |
our $mpv_path; # last mpv path used |
| 29 |
our $mpv_optionlist; # output of mpv --list-options |
| 30 |
|
| 31 |
sub new { |
| 32 |
my ($class, %kv) = @_; |
| 33 |
|
| 34 |
bless { |
| 35 |
mpv => "mpv", |
| 36 |
args => [], |
| 37 |
%kv, |
| 38 |
}, $class |
| 39 |
} |
| 40 |
|
| 41 |
# can be used to escape filenames |
| 42 |
sub escape_binary { |
| 43 |
shift; |
| 44 |
local $_ = shift; |
| 45 |
# we escape every "illegal" octet using U+10e5df HEX. this is later undone in cmd |
| 46 |
s/([\x00-\x1f\x80-\xff])/sprintf "\x{10e5df}%02x", ord $1/ge; |
| 47 |
$_ |
| 48 |
} |
| 49 |
|
| 50 |
sub start { |
| 51 |
my ($self, @extra_args) = @_; |
| 52 |
|
| 53 |
return if $self->{fh}; |
| 54 |
|
| 55 |
# cache optionlist for same "path" |
| 56 |
($mpv_path, $mpv_optionlist) = ($self->{mpv}, qx{\Q$self->{$mpv_path}\E --list-options}) |
| 57 |
if $self->{mpv} ne $mpv_path; |
| 58 |
|
| 59 |
my $options = $mpv_optionlist; |
| 60 |
|
| 61 |
my ($fh, $slave) = AnyEvent::Util::portable_socketpair |
| 62 |
or die "socketpair: $!\n"; |
| 63 |
|
| 64 |
fh_nonblocking $fh , 1; |
| 65 |
fh_nonblocking $slave, 0; |
| 66 |
|
| 67 |
my $self->{pid} = fork; |
| 68 |
|
| 69 |
if ($self->{pid} eq 0) { |
| 70 |
my $input_file = $options =~ /\s--input-ipc-client\s/ ? "input-ipc-client" : "input-file"; |
| 71 |
|
| 72 |
exec $self->{mpv}, |
| 73 |
qw(--no-input-terminal --idle=yes --pause), |
| 74 |
($self->{trace} ? "--quiet" : "--really-quiet"), |
| 75 |
"--$input_file=fd://" . (fileno $slave), |
| 76 |
@{ $self->{args} }, |
| 77 |
@extra_args; |
| 78 |
exit 1; |
| 79 |
} |
| 80 |
|
| 81 |
$self->{fh} = $fh; |
| 82 |
|
| 83 |
my $trace = $self->{trace} || sub { }; |
| 84 |
|
| 85 |
$trace = sub { warn "$_[0] $_[1]\n" } if $trace && !ref $trace; |
| 86 |
|
| 87 |
my $buf; |
| 88 |
my $rw; |
| 89 |
my $ww; |
| 90 |
my $wbuf; |
| 91 |
my $reqid; |
| 92 |
|
| 93 |
$self->{rw} = AE::io $fh, 0, sub { |
| 94 |
if (sysread $fh, $buf, 8192, length $buf) { |
| 95 |
while ($buf =~ s/^([^\n]+)\n//) { |
| 96 |
$trace->("mpv>" => "$1"); |
| 97 |
|
| 98 |
if ("{" eq substr $1, 0, 1) { |
| 99 |
eval { |
| 100 |
my $reply = JSON::XS->new->latin1->decode ($1); |
| 101 |
|
| 102 |
if (exists $reply->{event}) { |
| 103 |
if ( |
| 104 |
$reply->{event} eq "client-message" |
| 105 |
and $reply->{args}[0] eq "AnyEvent::MPV" |
| 106 |
and $reply->{args}[1] eq "keyhack" |
| 107 |
) { |
| 108 |
$self->on_key_event ($reply->{args}[2]); |
| 109 |
} else { |
| 110 |
$self->on_event ($reply->{event}); |
| 111 |
} |
| 112 |
} elsif (exists $reply->{request_id}) { |
| 113 |
my $cv = delete $self->{cmd_cv}{$reply->{request_id}}; |
| 114 |
|
| 115 |
unless ($cv) { |
| 116 |
warn "no cv found for request id <$reply->{request_id}>\n"; |
| 117 |
next; |
| 118 |
} |
| 119 |
|
| 120 |
if (exists $reply->{data}) { |
| 121 |
$cv->send ($reply->{data}); |
| 122 |
} elsif ($reply->{error} eq "success") { # success means error... eh.. no... |
| 123 |
$cv->send; |
| 124 |
} else { |
| 125 |
$cv->croak ($reply->{error}); |
| 126 |
} |
| 127 |
|
| 128 |
} else { |
| 129 |
warn "unexpected reply from mpv, pleasew report: <$1>\n"; |
| 130 |
} |
| 131 |
}; |
| 132 |
warn $@ if $@; |
| 133 |
} else { |
| 134 |
$trace->("mpv>" => "$1"); |
| 135 |
} |
| 136 |
} |
| 137 |
} else { |
| 138 |
$self->on_eof; |
| 139 |
} |
| 140 |
}; |
| 141 |
|
| 142 |
$self->{_send} = sub { |
| 143 |
$wbuf .= "$_[0]\n"; |
| 144 |
|
| 145 |
$trace->(">mpv" => "$_[0]"); |
| 146 |
|
| 147 |
$self->{ww} ||= AE::io $fh, 1, sub { |
| 148 |
my $len = syswrite $fh, $wbuf; |
| 149 |
substr $wbuf, 0, $len, ""; |
| 150 |
undef $self->{ww} unless length $wbuf; |
| 151 |
}; |
| 152 |
}; |
| 153 |
} |
| 154 |
|
| 155 |
sub on_eof { |
| 156 |
my ($self) = @_; |
| 157 |
|
| 158 |
$self->{on_eof}($self) if $self->{on_eof}; |
| 159 |
} |
| 160 |
|
| 161 |
sub on_event { |
| 162 |
my ($self, $key) = @_; |
| 163 |
|
| 164 |
$self->{on_event}($self, $key) if $self->{on_event}; |
| 165 |
} |
| 166 |
|
| 167 |
sub on_key_event { |
| 168 |
my ($self, $key) = @_; |
| 169 |
|
| 170 |
$self->{on_key_event}($self, $key) if $self->{on_key_event}; |
| 171 |
} |
| 172 |
|
| 173 |
sub cmd { |
| 174 |
my ($self, @cmd) = @_; |
| 175 |
|
| 176 |
my $cv = AE::cv; |
| 177 |
|
| 178 |
my $reqid = ++$self->{reqid}; |
| 179 |
$self->{cmd_cv}{$reqid} = $cv; |
| 180 |
|
| 181 |
my $cmd = JSON::XS::encode_json { command => ref $cmd[0] ? $cmd[0] : \@cmd, request_id => $reqid*1 }; |
| 182 |
|
| 183 |
# (un-)apply escape_binary hack |
| 184 |
$cmd =~ s/\xf4\x8e\x97\x9f(..)/sprintf sprintf "\\x%02x", hex $1/ges; # f48e979f == 10e5df in utf-8 |
| 185 |
|
| 186 |
$self->{_send}($cmd); |
| 187 |
|
| 188 |
$cv |
| 189 |
} |
| 190 |
|
| 191 |
sub stop { |
| 192 |
my ($self) = @_; |
| 193 |
|
| 194 |
if ($self->{pid}) { |
| 195 |
delete $self->{rw}; |
| 196 |
delete $self->{ww}; |
| 197 |
|
| 198 |
close delete $self->{fh}; # current mpv versions should cleanup on their own on close |
| 199 |
|
| 200 |
kill TERM => $self->{pid}; |
| 201 |
|
| 202 |
delete $self->{pid}; |
| 203 |
} |
| 204 |
} |
| 205 |
|
| 206 |
=head1 SEE ALSO |
| 207 |
|
| 208 |
L<AnyEvent>. |
| 209 |
|
| 210 |
=head1 AUTHOR |
| 211 |
|
| 212 |
Marc Lehmann <schmorp@schmorp.de> |
| 213 |
http://home.schmorp.de/ |
| 214 |
|
| 215 |
=cut |
| 216 |
|
| 217 |
1 |
| 218 |
|
