vsslctrl 0.1.2.dev1

Package for controlling VSSL amplifiers

vsslctrl

Package for controlling VSSL range of streaming amplifiers.

vsslctrl is not endorsed or affiliated with VSSL in any manner.

Motovation for this project was to intergrate VSSLs amplifiers into Home Assistant and have control over different subnets (not mDNS dependant)

I am looking for testers with any VSSL amplifier models, please get in touch if you interested in helping.

Only tested on VSSL A.3x software version p15305.016.3701.

TODOs

• Test on other models (hardware needed)
• Home Assistant integration. In progress, here
• Function scoping to supported feature / models
• Better test coverage

Important

Warning: no VSSL Agent should be running on the same network. If you dont know what this is, then you can probably ignore this notice.

Basic Usage

vsslctrl needs to be running inside a asyncio event loop.

import asyncio
from vsslctrl import Vssl, Zone

async def main():
	
	# Represents a physical VSSL amplifier
	vssl = Vssl()

	# Add each you wish to control
	zone1 = vssl.add_zone(Zone.IDs.ZONE_1, '192.168.1.10')
	zone2 = vssl.add_zone(Zone.IDs.ZONE_2, '192.168.1.11')
	zone3 = vssl.add_zone(Zone.IDs.ZONE_3, '192.168.1.12')
	#... up to 6 zones

	# Connect and initiate zones.
   	await vssl.initialise()

   	"""Control Examples"""
   	# Print zone1 name
   	print(zone1.settings.name)
   	# Set zone2 volume to 25%
   	zone2.volume = 25
   	# Pause zone3
   	zone3.pause()
   	# or zone3.transport.pause()
   	# Print zone1 track name
   	print(zone1.track.name)


   	# Shutdown and disconnect all zones
   	await vssl.shutdown()


asyncio.run(main())

API

Most functionality is achived via getters and setters of the two main classes Vssl, Zone.

The classes will update the physical VSSL device when setting a property and once feedback has been received, the classes internal state will be updated. For example:

# Setting the zones name
zone1.settings.name = 'Living Room'
>>> None

# Printing zone name
zone_name = zone1.settings.name
print(zone_name)
>>> 'Living Room'

Important in the above example, zone1.settings.name wont be set to its new value until after the VSSL device has changed the name and the Zone class has received confimation feedback. If you need to wait for the value change, you can await a [property_name]_CHANGE events.

Vssl

Property	Description	Type
sw_version	Software version	str readonly
serial	Serial number	str readonly
model_zone_qty	Number of zones the device has	int readonly
reboot()	Reboot all zones	func

"""Example"""
# Reboot all zones
vssl.reboot()

Vssl.settings

Property	Description	Type
name	Device name	str
optical_input_name	Name of the optical input	str

"""Example"""
# Setting device name
vssl.settings.name = 'My House'
# Setting optical input name
vssl.settings.optical_input_name = 'Optical Input 1'

Vssl.settings.power

Property	Description	Type	Values
state	Power state	int readonly	VsslPowerSettings.States
adaptive	Power adaptive	bool

"""Example"""
# Setting power adaptive
vssl.settings.power.adaptive = True

Zone

Property	Description	Type	Values
id	Zone number / ID	int readonly	Zone.IDs
host	IP address	str readonly
volume	Volume	int	0...100
volume_raise([step=1])	Raise volume by step	func	step: int 1...100
volume_lower([step=1])	Lower volume by step	func	step: int 1...100
mute	Volume muted	bool
mute_toggle()	Mute / Unmute	func
play()	Play	func
stop()	Stop	func
pause()	Pause	func
next()	Next track	func
prev()	Begining of track or previous track	func
reboot()	Reboot zone	func
play_url([url], [all_zones])	Play a URL	func	url: str, all_zones: bool

"""Examples"""
# Set volume to 50%
zone1.volume = 50
# Raise volume by 5%
zone1.volume_raise(5)
# Mute
zone1.mute = True
# Toggle mute
zone1.mute_toggle()
# Pause transport
zone1.pause()
# Next track
zone1.next()
# Play a URL on this zone1
zone1.play_url('http://soundbible.com/grab.php?id=2217&type=mp3')
# Play a URL on all zones
zone1.play_url('http://soundbible.com/grab.php?id=2217&type=mp3', True)

Zone.transport

A VSSL amplifier can not start a stream except for playing a URL directly. This is a limitation of the hardware itself.

Property	Description	Type	Values
state	Transport state. i.e Play, Stop, Pause	int	ZoneTransport.States
play()	Play	func
stop()	Stop	func
pause()	Pause	func
next()	Next track	func
prev()	Begining of track or previous track	func
is_playing	Is the zone playing	bool readonly
is_stopped	Is the zone stopped	bool readonly
is_pasued	Is the zone pasued	bool readonly
is_repeat	Repeat state. i.e all, one, off	int readonly	ZoneTransport.Repeat
is_shuffle	Is shuffle enabled	bool readonly
has_next	Is the next button enabled	bool readonly
has_prev	Is the prev button enabled	bool readonly

"""Example"""
# Pause the stream
zone1.transport.pause()
# or
zone1.transport.state = ZoneTransport.States.PAUSE

Zone.track

• Not all sources have complete metadata - missing value will be set to defaults.
• Airplay track position is not avaiable.

Property	Description	Type	Values
title	Title	str readonly
album	Album	str readonly
artist	Artist	str readonly
genre	Genre	str readonly
duration	Length in miliseconds (ms)	int readonly
progress	Current position in miliseconds (ms)	int readonly
cover_art_url	URL to cover art	str readonly
source	Track source e.g Spotify	int readonly	TrackMetadata.Sources
url	URL of file or track	str readonly

Zone.input

Property	Description	Type	Values
source	Change input source	int	InputRouter.Sources
priority	Change input priority. Stream or analog in higher priority	int	InputRouter.Priorities

"""Example"""
# Change zone 1 to listen to analog input 4
zone1.input.source = InputRouter.Sources.ANALOG_IN_4

# Change zone 1 to perfer analog input (local) over stream
zone1.input.priority = InputRouter.Priorities.LOCAL

Zone.group

Working on A.3x but offically unsupported in x series amplifiers.

Property	Description	Type	Values
source	Zone ID of group master / source	int readonly	Zone.IDs
is_master	This zone is the group master	bool readonly
add_member()	Add zone to group / create group	func	Zone.IDs
remove_member()	Remove zone from group	func	Zone.IDs
dissolve()	Dissolve group / remove all members	func
leave()	Leave the group if a member	func

"""Examples"""
# Add group 2 to a group with zone 1 as master
zone1.group.add_member(Zone.IDs.ZONE_2)
# Remove zone 2 from group.
zone2.group.leave() # or
zone1.group.remove_member(Zone.IDs.ZONE_2)
# If zone 1 is a master, remove all members
zone1.group.dissolve()

Zone.analog_output

Property	Description	Type	Values
source	Where the AO is routed from. i.e a zone, optical input or off	int	AnalogOutput.Sources
is_fixed_volume	Fix the output volume. Output wont respond to volume control	bool readonly
is_fixed_volume_toggle()	Toggle fixed volume	func

"""Examples"""
# Change analog output of zone1 to be outputting the optical input
zone1.analog_output.source = AnalogOutput.Sources.OPTICAL_IN

# Change analog output of zone1 to be outputting the zone 2 source (whatever zone 2 is using as a source)
zone1.analog_output.source = AnalogOutput.Sources.ZONE_2

# Fix the analog output volume. 
zone1.analog_output.is_fixed_volume = True

Zone.settings

Property	Description	Type	Values
name	Name	str
disabled	Disable the zone	bool
disabled_toggle()	disable / enable	func
mono	Set output to mono or stereo	int	ZoneSettings.StereoMono
mono_toggle()	Toggle mono or stereo	func

"""Examples"""
# Set name
zone1.settings.name = 'Living Room'
# Disable Zone
zone1.disabled = True
# Toggle mono output
zone1.mono_toggle()

Zone.settings.analog_input

Property	Description	Type	Values
name	Name	str
fixed_gain	Fix the input gain to a specific value	int	0...100

"""Examples"""
# Change zone1 analog input name
zone1.settings.analog_input.name = 'BluRay Player'

# Fix zone1 analog input gain to 50%.
zone1.settings.analog_input.fixed_gain = 50

Zone.settings.volume

Property	Description	Type	Values
default_on	Default on volume	int	0...100
max_left	Max volume left channel	int	0...100
max_right	Max volume right channel	int	0...100

"""Examples"""
# Set default on volume to 50%
zone1.settings.volume.default_on = 50
# Set maximum volume for left channel to 75%
zone1.settings.volume.default_on = 75

Zone.settings.eq

Property	Description	Type	Values
enabled	Enable / disable EQ	bool

EQ to be set in decibel using a range -10dB to +10dB

Property	Description	Type	Values
hz60_db	60Hz	int	-10...10
hz200_db	200Hz	int	-10...10
hz500_db	500Hz	int	-10...10
khz1_db	1kHz	int	-10...10
khz4_db	4kHz	int	-10...10
khz8_db	8kHz	int	-10...10
khz15_db	15kHz	int	-10...10

"""Examples"""
# Set 1kHz EQ to -2
zone1.settings.eq.khz1_db = -2

Credit

The VSSL API was reverse engineered using Wireshark, VSSLs native "legacy" iOS app and their deprecated vsslagent.

Known Issues & Limitiations

• Tested on VSSL A.3x software version p15305.016.3701
• Not tested on A.1x, A.6.x or original A series range of amplifiers (testers welcome)
• VSSL can not start a stream except for playing a URL directly. This is a limitation of the hardware itself.
• Not all sources set the volume to 0 when the zone is muted
• Grouping feedback is flaky on the X series amplifiers
• Cant stop a URL playback, feedback is worng at least
• VSSL likes to cache old track metadata. For example when playing a URL after Spotify, often the device will respond with the previous (Spotify) tracks metadata
• stop() is intended to disconnect the client and pause the stream. Doesnt always function this way, depending on stream source
• Occasionally a zones might stop responding to certain commands, issuing the reboot command generally corrects

Future

• REST API / Web App
• Save and recall EQ
• A.1(x) coverage i.e Bluetooth