Python Snippets
===============


.. _system_volume:

------------------
Set speaker volume
------------------

.. code-block:: python

    import navel
    
    with navel.Robot() as robot:
        print(f"Previous volume: {robot.volume}%")
        robot.volume += 3
        print(f"New volume: {robot.volume}%")


--------------------------
Stream audio to Google ASR
--------------------------

In your virtual environment, ``pip install pyaudio``.

Follow examples on `Github <https://github.com/GoogleCloudPlatform/python-docs-samples/blob/main/speech/microphone/transcribe_streaming_infinite.py>`_.

You can configure what microphone to use by adding an ``input_device_index`` in ``self._audio_interface.open()``.

To list the available devices with indices, use the following code.

.. code-block:: python

    import pyaudio
    p = pyaudio.PyAudio()
    for i in range(p.get_device_count()):
        print(p.get_device_info_by_index(i))


------------------------------------
Disable automatic facial expressions
------------------------------------

Facial expressions are in auto-mode by default, which weakens your manual
control. You can disable it until restart with the following code.

.. code-block:: python

    import navel

    with navel.Robot() as robot:
        robot.config_set("cns_fer_cont_t1", 0, navel.DataType.U32)
        robot.config_set("cns_fer_cont_t2", 0, navel.DataType.U32)
        robot.config_set("cns_fer_peak_t1", 0, navel.DataType.U32)
        robot.config_set("cns_fer_peak_t2", 0, navel.DataType.U32)
        robot.config_set("cns_fer_overlay_inc", 0, navel.DataType.F32)
        robot.config_set("cns_fer_overlay_max", 0, navel.DataType.F32)
        robot.config_set("cns_fer_overlay_peak_min", 0, navel.DataType.F32)
        robot.config_set("cns_fer_peak_max", 0, navel.DataType.F32)