AnyEvent-MPV
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$mpv->cmd_recv ("stop");
$position = $mpv->cmd_recv ("get_property", "playback-time");
=cut
sub cmd_recv {
&cmd->recv
}
=item $mpv->bind_key ($INPUT => $string)
This is an extension implement by this module to make it easy to get key
events. The way this is implemented is to bind a C<client-message> witha
first argument of C<AnyEvent::MPV> and the C<$string> you passed. This
C<$string> is then passed to the C<on_key> handle when the key is
proessed, e.g.:
my $mpv = AnyEvent::MPV->new (
on_key => sub {
my ($mpv, $key) = @_;
$mpv->cmd ("set", "vid", "auto");
$mpv->cmd ("set", "aid", "auto");
$mpv->cmd ("set", "sid", "no");
$mpv->cmd ("set", "file-local-options/chapters-file", $mpv->escape_binary ("$mpv_path.chapters"));
$mpv->cmd ("loadfile", $mpv->escape_binary ($mpv_path));
$mpv->cmd ("script-message", "osc-visibility", "auto", "dummy");
Handling events makes the main bulk of video playback code. For example,
various ways of ending playback:
if ($INPUT eq "mpv/quit") { # should not happen, but allows user to kill etc. without consequence
$status = 1;
mpv_init; # try reinit
last;
} elsif ($INPUT eq "mpv/idle") { # normal end-of-file
last;
} elsif ($INPUT eq "return") {
$status = 1;
last;
Or the code that actually starts playback, once the file is loaded:
our %SAVE_PROPERTY = (aid => 1, sid => 1, "audio-delay" => 1);
...
my $oid = 100;
} elsif ($INPUT eq "mpv/file-loaded") { # start playing, configure video
$mpv->cmd ("seek", $playback_start, "absolute+exact") if $playback_start > 0;
my $target_fps = eval { $mpv->cmd_recv ("get_property", "container-fps") } || 60;
$target_fps *= play_video_speed_mult;
set_fps $target_fps;
unless (eval { $mpv->cmd_recv ("get_property", "video-format") }) {
$mpv->cmd ("set", "file-local-options/lavfi-complex", "[aid1] asplit [ao], showcqt=..., format=yuv420p [vo]");
};
Also, a number of properties are not global, but per-file. At the moment,
this is C<audio-delay>, and the current audio/subtitle track, which it
sets, and also creates an observer. Again, this doesn'T use the observe
functionality of this module, but handles it itself, assigning obsevrer
ids 100+ to temporary/per-file observers.
Lastly, it sets some global (or per-youtube-uploader) parameters, such as
speed, and unpauses. Property changes are handled like other input events:
} elsif ($INPUT eq "mpv/property-change") {
my $prop = $INPUT_DATA->{name};
if ($prop eq "chapter-metadata") {
if ($INPUT_DATA->{data}{TITLE} =~ /^\[SponsorBlock\]: (.*)/) {
my $section = $1;
my $skip;
$skip ||= $SPONSOR_SKIP{$_}
for split /\s*,\s*/, $section;
if (defined $skip) {
if ($skip) {
# delay a bit, in case we get two metadata changes in quick succession, e.g.
# because we have a skip at file load time.
}
} else {
$mpv->cmd ("show-text", "UNRECOGNIZED sponsorblock section \"$section\"", 60000);
}
} else {
# cancel a queued skip
undef $skip_delay;
}
} elsif (exists $SAVE_PROPERTY{$prop}) {
$PLAYING_STATE->{"mpv_$prop"} = $INPUT_DATA->{data};
::state_save;
}
This saves back the per-file properties, and also handles chapter changes
in a hacky way.
Most of the handlers are very simple, though. For example:
} elsif ($INPUT eq "pause") {
$mpv->cmd ("cycle", "pause");
$PLAYING_STATE->{curpos} = $mpv->cmd_recv ("get_property", "playback-time");
} elsif ($INPUT eq "right") {
$mpv->cmd ("osd-msg-bar", "seek", 30, "relative+exact");
} elsif ($INPUT eq "left") {
$mpv->cmd ("osd-msg-bar", "seek", -5, "relative+exact");
} elsif ($INPUT eq "up") {
$mpv->cmd ("osd-msg-bar", "seek", +600, "relative+exact");
} elsif ($INPUT eq "down") {
$mpv->cmd ("osd-msg-bar", "seek", -600, "relative+exact");
} elsif ($INPUT eq "select") {
$mpv->cmd ("osd-msg-bar", "add", "audio-delay", "-0.100");
} elsif ($INPUT eq "start") {
$mpv->cmd ("osd-msg-bar", "add", "audio-delay", "0.100");
} elsif ($INPUT eq "intfwd") {
$mpv->cmd ("no-osd", "frame-step");
} elsif ($INPUT eq "audio") {
$mpv->cmd ("osd-auto", "cycle", "audio");
} elsif ($INPUT eq "subtitle") {
$mpv->cmd ("osd-auto", "cycle", "sub");
} elsif ($INPUT eq "triangle") {
$mpv->cmd ("osd-auto", "cycle", "deinterlace");
Once a file has finished playing (or the user strops playback), it pauses,
unobserves the per-file observers, and saves the current position for to
be able to resume:
$mpv->cmd ("set", "pause", "yes");
while ($oid > 100) {
$mpv->cmd ("unobserve_property", $oid--);
On error, the condvar will croak when "recv" is called.
$result = $mpv->cmd_recv ($command => $arg, $arg...)
The same as calling "cmd" and immediately "recv" on its return
value. Useful when you don't want to mess with mpv asynchronously or
simply needs to have the result:
$mpv->cmd_recv ("stop");
$position = $mpv->cmd_recv ("get_property", "playback-time");
$mpv->bind_key ($INPUT => $string)
This is an extension implement by this module to make it easy to get
key events. The way this is implemented is to bind a
"client-message" witha first argument of "AnyEvent::MPV" and the
$string you passed. This $string is then passed to the "on_key"
handle when the key is proessed, e.g.:
my $mpv = AnyEvent::MPV->new (
on_key => sub {
my ($mpv, $key) = @_;
$mpv->cmd ("set", "vid", "auto");
$mpv->cmd ("set", "aid", "auto");
$mpv->cmd ("set", "sid", "no");
$mpv->cmd ("set", "file-local-options/chapters-file", $mpv->escape_binary ("$mpv_path.chapters"));
$mpv->cmd ("loadfile", $mpv->escape_binary ($mpv_path));
$mpv->cmd ("script-message", "osc-visibility", "auto", "dummy");
Handling events makes the main bulk of video playback code. For example,
various ways of ending playback:
if ($INPUT eq "mpv/quit") { # should not happen, but allows user to kill etc. without consequence
$status = 1;
mpv_init; # try reinit
last;
} elsif ($INPUT eq "mpv/idle") { # normal end-of-file
last;
} elsif ($INPUT eq "return") {
$status = 1;
last;
Or the code that actually starts playback, once the file is loaded:
our %SAVE_PROPERTY = (aid => 1, sid => 1, "audio-delay" => 1);
...
my $oid = 100;
} elsif ($INPUT eq "mpv/file-loaded") { # start playing, configure video
$mpv->cmd ("seek", $playback_start, "absolute+exact") if $playback_start > 0;
my $target_fps = eval { $mpv->cmd_recv ("get_property", "container-fps") } || 60;
$target_fps *= play_video_speed_mult;
set_fps $target_fps;
unless (eval { $mpv->cmd_recv ("get_property", "video-format") }) {
$mpv->cmd ("set", "file-local-options/lavfi-complex", "[aid1] asplit [ao], showcqt=..., format=yuv420p [vo]");
};
Also, a number of properties are not global, but per-file. At the
moment, this is "audio-delay", and the current audio/subtitle track,
which it sets, and also creates an observer. Again, this doesn'T use the
observe functionality of this module, but handles it itself, assigning
obsevrer ids 100+ to temporary/per-file observers.
Lastly, it sets some global (or per-youtube-uploader) parameters, such
as speed, and unpauses. Property changes are handled like other input
events:
} elsif ($INPUT eq "mpv/property-change") {
my $prop = $INPUT_DATA->{name};
if ($prop eq "chapter-metadata") {
if ($INPUT_DATA->{data}{TITLE} =~ /^\[SponsorBlock\]: (.*)/) {
my $section = $1;
my $skip;
$skip ||= $SPONSOR_SKIP{$_}
for split /\s*,\s*/, $section;
if (defined $skip) {
if ($skip) {
# delay a bit, in case we get two metadata changes in quick succession, e.g.
# because we have a skip at file load time.
}
} else {
$mpv->cmd ("show-text", "UNRECOGNIZED sponsorblock section \"$section\"", 60000);
}
} else {
# cancel a queued skip
undef $skip_delay;
}
} elsif (exists $SAVE_PROPERTY{$prop}) {
$PLAYING_STATE->{"mpv_$prop"} = $INPUT_DATA->{data};
::state_save;
}
This saves back the per-file properties, and also handles chapter
changes in a hacky way.
Most of the handlers are very simple, though. For example:
} elsif ($INPUT eq "pause") {
$mpv->cmd ("cycle", "pause");
$PLAYING_STATE->{curpos} = $mpv->cmd_recv ("get_property", "playback-time");
} elsif ($INPUT eq "right") {
$mpv->cmd ("osd-msg-bar", "seek", 30, "relative+exact");
} elsif ($INPUT eq "left") {
$mpv->cmd ("osd-msg-bar", "seek", -5, "relative+exact");
} elsif ($INPUT eq "up") {
$mpv->cmd ("osd-msg-bar", "seek", +600, "relative+exact");
} elsif ($INPUT eq "down") {
$mpv->cmd ("osd-msg-bar", "seek", -600, "relative+exact");
} elsif ($INPUT eq "select") {
$mpv->cmd ("osd-msg-bar", "add", "audio-delay", "-0.100");
} elsif ($INPUT eq "start") {
$mpv->cmd ("osd-msg-bar", "add", "audio-delay", "0.100");
} elsif ($INPUT eq "intfwd") {
$mpv->cmd ("no-osd", "frame-step");
} elsif ($INPUT eq "audio") {
$mpv->cmd ("osd-auto", "cycle", "audio");
} elsif ($INPUT eq "subtitle") {
$mpv->cmd ("osd-auto", "cycle", "sub");
} elsif ($INPUT eq "triangle") {
$mpv->cmd ("osd-auto", "cycle", "deinterlace");
Once a file has finished playing (or the user strops playback), it
pauses, unobserves the per-file observers, and saves the current
position for to be able to resume:
$mpv->cmd ("set", "pause", "yes");
while ($oid > 100) {
$mpv->cmd ("unobserve_property", $oid--);
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