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.TH HTTP-MUSIC-PLAY 1
.SH NAME
http-music-play - plays audio from a playlist file
.SH SYNOPSIS
.B http-music play
[opts...]
.SH DESCRIPTION
Plays audio referenced from a playlist file.
Tracks selected using a "picker" (see \fB--picker\fR) and retrieved using a "downloader" (see \fB--downloader\fR).
Downloaded tracks are played with the \fBmpv\fR process.
(As such, \fBmpv\fR is a required dependency for http-music to play anything.)
.SH KEYBOARD CONTROLS
.TP
.BR <left-arrow>
Skips backwards 5 seconds in the currently playing track; hold shift to skip by
30 seconds.
.TP
.BR <right-arrow>
Skips forwards 5 seconds in the currently playing track; hold shift to skip by
30 seconds.
.TP
.BR <up-arrow>
Turns the volume up a 10%-notch.
Unfortunately, at present, the volume setting is NOT kept across tracks.
You'll need to adjust your audio volume whenever a new song starts.
(If possible, it might be better just to opt for changing the system volume.)
.TP
.BR <down-arrow>
Turns the volume down 10%.
.TP
.BR <space>
Pauses (or resumes) playback.
.TP
.BR i
Shows information (title, URL/path) on the currently playing track.
(\fBt\fR also works.)
.TP
.BR q
Quits the http-music process and stops music currently being played.
(\fB^C\fR and \fB^D\fR also work.)
.TP
.BR s
Skips the currently playing track.
.SH OPTIONS
.TP
.BR \-c ", " \-\-clear
Clears the active playlist.
This does not effect the source playlist, so specific groups can be selected using \fB\-\-keep\fR.
.TP
.BR \-h ", " \-? ", " \-\-help
Presents a help message, directing the user to the \fBman\fR page.
If this is the last option used, nothing plays (see \fB\-\-play\fR).
.TP
.BR \-k ", " \-\-keep " \fIgroupPath\fR"
Keeps a group by adding it from the source playlist.
This is usually useful after clearing the active playlist (\fB\-\-clear\fR); it can also be used to keep a sub-group after removing an entire parent group, e.g. \fB-r foo -k foo/baz\fR.
.TP
.BR \-l ", " \-\-list\-groups ", " \-\-list
Lists all groups (but not tracks) in the (active) playlist.
If this is the last option used, nothing plays (see \fB\-\-play\fR).
.TP
.BR \-L ", " \-\-list\-all ", " \-\-list\-tracks
Lists all groups and tracks in the (active) playlist.
If this is the last option used, nothing plays (see \fB\-\-play\fR).
.TP
.BR \-np ", " \-\-no\-play
Forces the playlist not to play.
See also \fB\-\-play\fR.
.TP
.BR \-o ", " \-\-open\-playlist ", " \-\-open " \fIplaylistFile\fR"
Opens a specific file to be used as the playlist file.
(This sets the source playlist.)
The default playlist file used upon loading is \fBplaylist.json\fR (in the same directory as \fBhttp-music\fR is being run in).
.TP
.BR \-\-picker ", " \-\-selector " \fIpickerType\fR"
Sets the picker type used for selecting tracks from the active playlist.
The default is \fBshuffle\fR.
.TP
.BR \-p ", " \-\-play
Forces the playlist to actually play, regardless of options such as \fB\-\-list\fR. See also \fB\-\-no\-play\fR.
.TP
.BR \-\-play\-opts
Sets command line options passed to the \fBplay\fR command.
For example, playback volume may be set to 30% by using \fB\-\-play\-opts '\-\-volume 30'\fR.
.TP
.BR \-\-print\-playlist ", " \-\-log-playlist ", " \-\-json
Prints the JSON representation of the active playlist to the console.
.TP
.BR \-r ", " \-\-remove ", " \-x " \fIgroupPath\fR"
Removes a group from the (active) playlist.
.TP
.BR \-w ", " \-\-write\-playlist ", " \-\-write ", " \-\-save " \fIfilePath\fR"
Writes the active playlist to a file.
This file can later be used with \fB\-\-open\fR; you won't need to stick in all the filtering options again.
.SH EXAMPLES
Basic usage:
.PP
.nf
.RS
$ http-music play
.RE
.fi
.PP
Generate a playlist from an HTTP server:
.PP
.nf
.RS
$ http-music crawl-http http://example.com/path > playlist.json
.RE
.fi
.PP
Generate a playlist from the local file system:
.PP
.nf
.RS
$ http-music crawl-local /example/path > playlist.json
.RE
.fi
.PP
Open a specific playlist file:
.PP
.nf
.RS
$ http-music play --open playlist2.json
$ http-music play -o playlist2.json
.RE
.fi
.PP
Only play music under a specific group:
.PP
.nf
.RS
$ http-music play --clear --keep 'Cool Author 72'
$ http-music play -c -k 'Cool Author 72'
$ http-music play -c -k 'Cool Author 72/Good Album'
.RE
.fi
.PP
Don't play music under a specific group:
.PP
.nf
.RS
$ http-music play --remove 'Bad News'
$ http-music play -r 'Bad News'
$ http-music play -x 'Bad News'
.RE
.fi
.PP
Don't play music under a specific group, except for a sub-group:
.PP
.nf
.RS
$ http-music play --remove 'Bad News' --keep 'Bad News/Irony'
$ http-music play -x 'Cool Author 72' -k 'Cool Author 72/Good Album'
.RE
.fi
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