Smudge

Control Spotify app from within Emacs.

Smudge allows you to control the Spotify application from within your favorite text editor. If you are running on Mac OS X or Linux, you can control the locally running instance. If you are running on any platform with a network connection (including Windows - and even headless!) and have a Spotify premium subscription, you can control an instance of Spotify via the Spotify Connect feature.

Features

• Spotify client integration for GNU/Linux (via D-Bus) and OS X (via AppleScript)
• Device playback display & selection using the Spotify Connect API (requires premium)
• Communicates with the Spotify API via Oauth2
• Displays the current track in mode line or title bar
• Create playlists (public or private)
• Browse the Spotify featured playlists, your own playlists, and their tracks
• Search for tracks and playlists that match the given keywords
• Easily control basic Spotify player features like, play/pause, previous, next, shuffle, and repeat with the Smudge Remote minor mode

Installation

(Requires Emacs 27.1+)

package.el is the built-in package manager in Emacs.

Smudge is available on the two major package.el community maintained repos - MELPA Stable and MELPA.

You can install Smudge with the following command:

M-x package-install [RET] smudge [RET]

To manually install Smudge instead, just clone this project somewhere in your disk, add that directory in the load-path, and require the smudge module:

(add-to-list 'load-path "<smudge-dir>")
(require 'smudge)

Configuration

;; Settings
(setq smudge-oauth2-client-secret "<spotify-app-client-secret>")
(setq smudge-oauth2-client-id "<spotify-app-client-id>")
(define-key smudge-mode-map (kbd "C-c .") 'smudge-command-map)

That keymap prefix is just a suggestion, following the conventions suggested for minor modes as defined in the Emacs manual Key Binding Conventions. Previous versions of this package used "M-p"

In order to get the the client ID and client secret, you need to create a Spotify app, specifying http://localhost:8080/smudge-api-callback as the redirect URI (or whichever port you have specified via customize). The OAuth2 exchange is handled by simple-httpd. If you are not already using this package for something else, you should not need to customize this port. Otherwise, you'll want to set it to whatever port you are running on.

To use the "Spotify Connect" transport (vs. controlling only your local instance - though you can also control your local instance as well), set smudge-transport to 'connect as follows. This feature requires a Spotify premium subscription.

(setq smudge-transport 'connect)

Creating The Spotify App

Go to Create an Application and give your application a name and a description:

After creating the new app, click the Edit Settings, scroll down a little bit, type http://localhost:8080/smudge-api-callback as the Redirect URI for the application, and click Add. Then, hit Save.

At this point, the client ID and the client secret are available, so set those values to smudge-oauth2-client-id and smudge-oauth2-client-secret, respectively.

Usage

Remote Minor Mode

Whenever you enable the global-smudge-remote-mode minor mode you get the following key bindings:

Key	Function	Description
C-c . M-s	smudge-controller-toggle-shuffle	Turn shuffle on/off [1]
C-c . M-r	smudge-controller-toggle-repeat	Turn repeat on/off [1]
C-c . M-p	smudge-controller-toggle-play	Play/pause
C-c . M-f	smudge-controller-next-track	Next track
C-c . M-b	smudge-controller-previous-track	Previous track
C-c . p m	smudge-my-playlists	Show your playlists
C-c . p f	smudge-featured-playlists	Show the featured playlists
C-c . p s	smudge-playlist-search	Search for playlists
C-c . p u	smudge-user-playlists	Show playlists for the given user
C-c . p c	smudge-create-playlist	Create a new playlist
C-c . t r	smudge-recently-played	List of recently played tracks
C-c . t s	smudge-track-search	Search for tracks
C-c . v u	smudge-controller-volume-up	Increase the volume [2]
C-c . v d	smudge-controller-volume-down	Decrease the volume [2]
C-c . v m	smudge-controller-volume-mute-unmute	Alternate the volume between 0 and 100 [2]
C-c . d	smudge-select-device	Select a playback device [2]

The current song being played by Smudge is displayed in the mode line along with the player status (playing, paused). The interval in which the player status is updated can be configured via the smudge-player-status-refresh-interval variable:

;; Updates the player status every 10 seconds (default is 5)
;; Note: Set 0 to disable this feature, and avoid values between 1 and 4 when
;; using the 'connect transport.
(setq smudge-player-status-refresh-interval 10)

[1] No proper support for this in D-Bus implementation for GNU/Linux
[2] This feature uses Spotify Connect and requires a premium subscription

Users of the package hydra may find the code below more convenient for managing Spotify:

;; A hydra for controlling spotify.
(defhydra hydra-spotify (:hint nil)
    "
^Search^                  ^Control^               ^Manage^
^^^^^^^^-----------------------------------------------------------------
_t_: Track               _SPC_: Play/Pause        _+_: Volume up
_m_: My Playlists        _n_  : Next Track        _-_: Volume down
_f_: Featured Playlists  _p_  : Previous Track    _x_: Mute
_u_: User Playlists      _r_  : Repeat            _d_: Device
^^                       _s_  : Shuffle           _q_: Quit
"
    ("t" smudge-track-search :exit t)
    ("m" smudge-my-playlists :exit t)
    ("f" smudge-featured-playlists :exit t)
    ("u" smudge-user-playlists :exit t)
    ("SPC" smudge-controller-toggle-play :exit nil)
    ("n" smudge-controller-next-track :exit nil)
    ("p" smudge-controller-previous-track :exit nil)
    ("r" smudge-controller-toggle-repeat :exit nil)
    ("s" smudge-controller-toggle-shuffle :exit nil)
    ("+" smudge-controller-volume-up :exit nil)
    ("-" smudge-controller-volume-down :exit nil)
    ("x" smudge-controller-volume-mute-unmute :exit nil)
    ("d" smudge-select-device :exit nil)
    ("q" quit-window "quit" :color blue))

(bind-key "a" #'hydra-spotify/body some-map)

Customizing The Player Status

The information displayed in the player status can be customized by setting the desired format in smudge-player-status-format. The following placeholders are supported:

Symbol	Description	Example
%u	Track URI	spotify:track:<id>
%a	Artist name (truncated)	Pink Floyd
%t	Track name (truncated)	Us and Them
%n	Track #	7
%l	Track duration, in minutes	7:49
%r	Player repeat status	R, -
%s	Player shuffle status	S, -
%p	Player playing status	Playing, Paused, Stopped

The default format is "[%p: %a - %t ◷ %l %r%s]".

The number of characters to be shown in truncated fields can be configured via the smudge-player-status-truncate-length variable.

(setq smudge-player-status-truncate-length 10) ; default: 15

The text indicator for each of the following player statuses can be configured via their corresponding variables:

Player State	Variable	Default Value
Playing	smudge-player-status-playing-text	"Playing"
Paused	smudge-player-status-paused-text	"Paused"
Stopped	smudge-player-status-stopped-text	"Stopped"
Repeating On	smudge-player-status-repeating-text	"R"
Repeating Off	smudge-player-status-not-repeating-text	"-"
Shuffling On	smudge-player-status-shuffling-text	"S"
Shuffling Off	smudge-player-status-not-shuffling-text	"-"

Global Remote Mode

This mode can be enabled globally by running M-x global-smudge-remote-mode.

Searching For Tracks

To search for tracks, run M-x smudge-track-search and type in your query. The results will be displayed in a separate buffer with the following key bindings:

Key	Description
a	Adds track to a playlist
l	Loads the next page of results (pagination)
g	Clears the results and reloads the first page of results
M-RET	Plays the track under the cursor in the context of its album [1]

[1] D-Bus implementation for GNU/Linux do not support passing the context, so only the track under the cursor will be played

The resulting buffer loads the global-smudge-remote-mode by default.

Tip: In order to customize the number of items fetched per page, just change the variable smudge-api-search-limit:

;; Do not use values larger than 50 for better compatibility across endpoints
(setq smudge-api-search-limit 50)

Playing a Spotify URI

To ask Smudge to play a resource by URI, run M-x smudge-play-uri and enter the resource URI.

Creating Playlists

To create new playlists, run M-x smudge-create-playlist and follow the prompts.

Currently it's not possible to add tracks to a playlist you own, or to remove tracks from them.

Searching For Playlists

To return the playlists for the current user, run M-x smudge-my-playlists, or M-x smudge-user-playlists to list the public playlists for some given user. To search playlists that match the given search criteria, run M-x smudge-playlist-search CRITERIA. Also, run M-x smudge-featured-playlists in order to browse the featured playlists from Spotify en_US.

Change the following variables in order to customize the locale and region for the featured playlists endpoint:

;; Spanish (Mexico)
(setq smudge-api-locale "es_MX")
(setq smudge-api-country "MX")

All these commands will display results in a separate buffer with the following key bindings:

Key	Description
l	Loads the next page of results (pagination)
g	Clears the results and reloads the first page of results
f	Follows the playlist under the cursor
u	Unfollows the playlist under the cursor
t	Lists the tracks of the playlist under the cursor
M-RET	Plays the playlist under the cursor

Once you open the list of tracks of a playlist, you get the following key bindings in the resulting buffer:

Key	Description
a	Adds track to a playlist
l	Loads the next page of results (pagination)
g	Clears the results and reloads the first page of results
f	Follows the current playlist
u	Unfollows the current playlist
M-RET	Plays the track under the cursor in the context of the playlist [1]

Both buffers load the global-smudge-remote-mode by default.

[1] D-Bus implementation for GNU/Linux do not support passing the context, so only the track under the cursor will be played

Selecting a Device for Playback

M-x smudge-select-device will display a list of devices available for playback in a separate buffer.

Note: use of this feature requires a Spotify premium subscription.

Once you open the list of devices, you get the following key bindings in the resulting buffer:

Key	Description
RET	Transfer playback to the device under the cursor.
g	Reloads the list of devices

Specifying the Player Status Location

By default, the player status (playing, paused, track name, time, shuffle, repeat, etc.) are shown in the modeline. If you want to display the status in the title bar when using a graphical display, you can set the following:

(setq smudge-status-location 'title-bar)

Valid values include 'title-bar, 'modeline and nil, where nil turns off the display of the player status completely. If the value is set to title-bar but you are not using a graphical display, the player status will be displayed in the mode line instead.

If you want to customize the separator between the existing title bar text and the player status, you can set the following, i.e.:

(setq smudge-title-bar-separator "----")

Otherwise, it defaults to 4 spaces.

License

Copyright (C) Daniel Fernandes Martins

Distributed under the GPL v3 License. See COPYING for further details.