pytesira 0.2.0

Control your Biamp Tesira DSPs directly from Python!

PyTesira

Control your Biamp Tesira DSPs directly from Python!

work in progress! stuff might break, please don't rely on this for anything critical... yet

Obligatory disclaimer: this is an unofficial project which is not in any way affiliated with, or endorsed by, Biamp Systems

Architecture

PyTesira adopts a modular design where the DSP class (src/pytesira/dsp.py) acts as the hub for everything.

A Transport channel (such as SSH) is used for connection to the Tesira DSP device (using the Tesira Text Protocol). Currently, SSH is the only supported transport (other transports are planned - feel free to submit a pull request also!).

Upon connection, PyTesira tries to create a block map of available DSP blocks. For each supported block type, it also attempts to query that block's attributes (e.g., number of channels and their labels). This can be exported and re-imported to shorten startup time (querying is slow - especially on a complex setup with many nodes).

A Block represents a type of DSP block available (e.g., LevelControl or SourceSelector). It handles everything that has to do with that specific DSP block - setting up subscriptions, updating state, handling update requests, and more.

Supported blocks and features

• LevelControl : read/write mute status, read/write levels
• MuteControl : read/write mute status
• SourceSelector : read/write mute status (output), set source and output levels, read levels, read and select active source
• DanteInput : read/write mute status, read/write levels, read/write invert setting, read/write fault-on-inactive setting
• DanteOutput : read/write mute status, read/write levels, read/write invert setting, read/write fault-on-inactive setting
• GraphicEqualizer : read/write global bypass, read/write band bypass, read/write band gain

Supported device-level features

• Start/stop system audio (dsp.start_system_audio() and dsp.stop_system_audio())
• Reboot device (dsp.reboot())
• Execute arbitrary commands (dsp.device_command(command : str))

Tested on

• TesiraFORTÉ DAN (software version 4.11.1.2)

Simple usage example

from pytesira.dsp import DSP
from pytesira.transport.ssh import SSH

device = DSP()
device.connect(backend = SSH(
                        hostname = "tesira.device.lan",
                        username = "admin", 
                        password = "forgetme",
                        host_key_check = False # Bad option! Bad! Change this in production!
                ))

# Note: at this point, we need to wait for the DSP to be fully connected/ready. 
# To do so, we can simply check for the boolean flag `device.ready`
while not device.ready:
    pass

# Save block map, which can then be loaded by specifying `block_map`
# next time when we load the class like so: DSP(block_map = "dsp_test.bmap")
device.save_block_map(output = "dsp_test.bmap")

# Get system info
print(device.hostname)
print(device.serial_number)
print(device.software_version)

# Get faults and network status
print(device.faults)
print(device.network)

# Assuming a 2-channel level control block named `LevelTest`,
# we first look at its channel status
print(device.blocks["LevelTest"].channels)

# Change level and mute states of a LevelControl block
device.blocks["LevelTest"].set_level(channel = 1, value = -20.0)
device.blocks["LevelTest"].set_mute(channel = 2, value = True)

# Get information on a source selector block named `SourceTest`
# (this includes all channels and their levels, as well as currently selected source)
print(device.blocks["SourceTest"].sources)

# Set source on a selector
device.blocks["SourceTest"].select_source(source = 1)

# Set source level on a selector
device.blocks["SourceTest"].set_source_level(source = 1, value = 0.0)