883 lines
33 KiB
Python
883 lines
33 KiB
Python
"""
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.. moduleauthor:: Fabio Manganiello <blacklight86@gmail.com>
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"""
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import json
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import math
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import os
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import queue
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import tempfile
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import time
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from enum import Enum
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from threading import Thread, Event, RLock
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from .core import Sound, Mix
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from platypush.context import get_bus
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from platypush.message.event.sound import SoundPlaybackStartedEvent, \
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SoundPlaybackPausedEvent, SoundPlaybackStoppedEvent, \
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SoundRecordingStartedEvent, SoundRecordingPausedEvent, \
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SoundRecordingStoppedEvent
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from platypush.plugins import Plugin, action
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class PlaybackState(Enum):
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STOPPED='STOPPED',
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PLAYING='PLAYING',
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PAUSED='PAUSED'
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class RecordingState(Enum):
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STOPPED='STOPPED',
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RECORDING='RECORDING',
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PAUSED='PAUSED'
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class SoundPlugin(Plugin):
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"""
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Plugin to interact with a sound device.
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Triggers:
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* :class:`platypush.message.event.sound.SoundPlaybackStartedEvent` on playback start
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* :class:`platypush.message.event.sound.SoundPlaybackStoppedEvent` on playback stop
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* :class:`platypush.message.event.sound.SoundPlaybackPausedEvent` on playback pause
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* :class:`platypush.message.event.sound.SoundRecordingStartedEvent` on recording start
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* :class:`platypush.message.event.sound.SoundRecordingStoppedEvent` on recording stop
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* :class:`platypush.message.event.sound.SoundRecordingPausedEvent` on recording pause
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Requires:
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* **sounddevice** (``pip install sounddevice``)
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* **soundfile** (``pip install soundfile``)
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* **numpy** (``pip install numpy``)
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"""
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_STREAM_NAME_PREFIX = 'platypush-stream-'
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def __init__(self, input_device=None, output_device=None,
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input_blocksize=Sound._DEFAULT_BLOCKSIZE,
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output_blocksize=Sound._DEFAULT_BLOCKSIZE, *args, **kwargs):
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"""
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:param input_device: Index or name of the default input device. Use
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:meth:`platypush.plugins.sound.query_devices` to get the
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available devices. Default: system default
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:type input_device: int or str
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:param output_device: Index or name of the default output device.
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Use :meth:`platypush.plugins.sound.query_devices` to get the
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available devices. Default: system default
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:type output_device: int or str
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:param input_blocksize: Blocksize to be applied to the input device.
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Try to increase this value if you get input overflow errors while
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recording. Default: 1024
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:type input_blocksize: int
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:param output_blocksize: Blocksize to be applied to the output device.
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Try to increase this value if you get output underflow errors while
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playing. Default: 1024
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:type output_blocksize: int
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"""
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super().__init__(*args, **kwargs)
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self.input_device = input_device
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self.output_device = output_device
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self.input_blocksize = input_blocksize
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self.output_blocksize = output_blocksize
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self.playback_state = {}
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self.playback_state_lock = RLock()
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self.playback_paused_changed = {}
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self.stream_mixes = {}
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self.recording_state = RecordingState.STOPPED
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self.recording_state_lock = RLock()
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self.recording_paused_changed = Event()
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self.active_streams = {}
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self.stream_name_to_index = {}
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self.stream_index_to_name = {}
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self.completed_callback_events = {}
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def _get_default_device(self, category):
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"""
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Query the default audio devices.
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:param category: Device category to query. Can be either input or output
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:type category: str
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"""
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import sounddevice as sd
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return sd.query_hostapis()[0].get('default_' + category.lower() +
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'_device')
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@action
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def query_devices(self, category=None):
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"""
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Query the available devices
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:param category: Device category to query. Can be either input or output. Default: None (query all devices)
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:type category: str
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:returns: A dictionary representing the available devices.
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Example::
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[
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{
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"name": "pulse",
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"hostapi": 0,
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"max_input_channels": 32,
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"max_output_channels": 32,
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"default_low_input_latency": 0.008684807256235827,
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"default_low_output_latency": 0.008684807256235827,
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"default_high_input_latency": 0.034807256235827665,
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"default_high_output_latency": 0.034807256235827665,
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"default_samplerate": 44100
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},
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{
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"name": "default",
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"hostapi": 0,
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"max_input_channels": 32,
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"max_output_channels": 32,
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"default_low_input_latency": 0.008684807256235827,
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"default_low_output_latency": 0.008684807256235827,
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"default_high_input_latency": 0.034807256235827665,
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"default_high_output_latency": 0.034807256235827665,
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"default_samplerate": 44100
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}
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]
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"""
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import sounddevice as sd
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devs = sd.query_devices()
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if category == 'input':
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devs = [d for d in devs if d.get('max_input_channels') > 0]
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elif category == 'output':
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devs = [d for d in devs if d.get('max_output_channels') > 0]
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return devs
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def _play_audio_callback(self, q, blocksize, streamtype, stream_index):
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import sounddevice as sd
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is_raw_stream = streamtype == sd.RawOutputStream
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def audio_callback(outdata, frames, time, status):
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if self._get_playback_state(stream_index) == PlaybackState.STOPPED:
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raise sd.CallbackStop
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while self._get_playback_state(stream_index) == PlaybackState.PAUSED:
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self.playback_paused_changed[stream_index].wait()
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if frames != blocksize:
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self.logger.warning('Received {} frames, expected blocksize is {}'.
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format(frames, blocksize))
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return
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if status.output_underflow:
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self.logger.warning('Output underflow: increase blocksize?')
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outdata = (b'\x00' if is_raw_stream else 0.) * len(outdata)
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return
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if status:
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self.logger.warning('Audio callback failed: {}'.format(status))
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try:
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data = q.get_nowait()
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except queue.Empty:
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self.logger.warning('Buffer is empty: increase buffersize?')
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raise sd.CallbackStop
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if len(data) < len(outdata):
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outdata[:len(data)] = data
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outdata[len(data):] = (b'\x00' if is_raw_stream else 0.) * \
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(len(outdata) - len(data))
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else:
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outdata[:] = data
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return audio_callback
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@action
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def play(self, file=None, sound=None, device=None, blocksize=None,
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bufsize=None, samplerate=None, channels=None, stream_name=None,
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stream_index=None):
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"""
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Plays a sound file (support formats: wav, raw) or a synthetic sound.
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:param file: Sound file path. Specify this if you want to play a file
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:type file: str
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:param sound: Sound to play. Specify this if you want to play
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synthetic sounds. You can also create polyphonic sounds by just
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calling play multple times.
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:type sound: Sound. You can initialize it either from a list
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of `Sound` objects or from its JSON representation, e.g.::
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{
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"midi_note": 69, # 440 Hz A
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"gain": 1.0, # Maximum volume
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"duration": 1.0 # 1 second or until release/pause/stop
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}
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:param device: Output device (default: default configured device or
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system default audio output if not configured)
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:type device: int or str
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:param blocksize: Audio block size (default: configured
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`output_blocksize` or 2048)
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:type blocksize: int
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:param bufsize: Size of the audio buffer (default: 20 frames for audio
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files, 2 frames for synth sounds)
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:type bufsize: int
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:param samplerate: Audio samplerate. Default: audio file samplerate if
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in file mode, 44100 Hz if in synth mode
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:type samplerate: int
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:param channels: Number of audio channels. Default: number of channels
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in the audio file in file mode, 1 if in synth mode
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:type channels: int
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:param stream_index: If specified, play to an already active stream
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index (you can get them through
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:meth:`platypush.plugins.sound.query_streams`). Default:
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creates a new audio stream through PortAudio.
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:type stream_index: int
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:param stream_name: Name of the stream to play to. If set, the sound
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will be played to the specified stream name, or a stream with that
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name will be created. If not set, and ``stream_index`` is not set
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either, then a new stream will be created on the next available
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index and named ``platypush-stream-<index>``.
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:type stream_name: str
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"""
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if not file and not sound:
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raise RuntimeError('Please specify either a file to play or a ' +
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'list of sound objects')
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import sounddevice as sd
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if blocksize is None:
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blocksize = self.output_blocksize
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if bufsize is None:
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if file:
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bufsize = Sound._DEFAULT_FILE_BUFSIZE
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else:
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bufsize = Sound._DEFAULT_SYNTH_BUFSIZE
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q = queue.Queue(maxsize=bufsize)
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f = None
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t = 0.
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if file:
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file = os.path.abspath(os.path.expanduser(file))
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if device is None:
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device = self.output_device
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if device is None:
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device = self._get_default_device('output')
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if file:
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import soundfile as sf
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f = sf.SoundFile(file)
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if not samplerate:
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samplerate = f.samplerate if f else Sound._DEFAULT_SAMPLERATE
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if not channels:
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channels = f.channels if f else 1
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with self.playback_state_lock:
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stream_index, is_new_stream = self._get_or_allocate_stream_index(
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stream_index=stream_index, stream_name=stream_name)
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if sound:
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mix = self.stream_mixes[stream_index]
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mix.add(sound)
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self.logger.info(('Starting playback of {} to sound device [{}] ' +
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'on stream [{}]').format(
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file or sound, device, stream_index))
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if not is_new_stream:
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return # Let the existing callback handle the new mix
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# TODO Potential support also for mixed streams with
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# multiple sound files and synth sounds?
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try:
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# Audio queue pre-fill loop
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for _ in range(bufsize):
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if f:
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data = f.buffer_read(blocksize, dtype='float32')
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if not data:
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break
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else:
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duration = mix.duration()
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blocktime = float(blocksize / samplerate)
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next_t = min(t+blocktime, duration) \
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if duration is not None else t+blocktime
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data = mix.get_wave(t_start=t, t_end=next_t,
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samplerate=samplerate)
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t = next_t
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if duration is not None and t >= duration:
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break
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q.put_nowait(data) # Pre-fill the audio queue
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stream = self.active_streams[stream_index]
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completed_callback_event = self.completed_callback_events[stream_index]
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if stream is None:
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streamtype = sd.RawOutputStream if file else sd.OutputStream
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stream = streamtype(samplerate=samplerate, blocksize=blocksize,
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device=device, channels=channels,
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dtype='float32',
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callback=self._play_audio_callback(
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q=q, blocksize=blocksize,
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streamtype=streamtype,
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stream_index=stream_index),
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finished_callback=completed_callback_event.set)
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self._start_playback(stream_index=stream_index, stream=stream)
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with stream:
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# Timeout set until we expect all the buffered blocks to
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# be consumed
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timeout = blocksize * bufsize / samplerate
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while True:
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while self._get_playback_state(stream_index) == \
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PlaybackState.PAUSED:
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self.playback_paused_changed[stream_index].wait()
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if f:
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data = f.buffer_read(blocksize, dtype='float32')
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if not data:
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break
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else:
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duration = mix.duration()
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blocktime = float(blocksize / samplerate)
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next_t = min(t+blocktime, duration) \
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if duration is not None else t+blocktime
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data = mix.get_wave(t_start=t, t_end=next_t,
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samplerate=samplerate)
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t = next_t
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if duration is not None and t >= duration:
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break
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if self._get_playback_state(stream_index) == \
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PlaybackState.STOPPED:
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break
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try:
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q.put(data, timeout=timeout)
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except queue.Full as e:
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if self._get_playback_state(stream_index) != \
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PlaybackState.PAUSED:
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raise e
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completed_callback_event.wait()
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except queue.Full as e:
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if stream_index is None or \
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self._get_playback_state(stream_index) != PlaybackState.STOPPED:
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self.logger.warning('Playback timeout: audio callback failed?')
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finally:
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if f and not f.closed:
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f.close()
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f = None
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self.stop_playback([stream_index])
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@action
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def record(self, outfile=None, duration=None, device=None, sample_rate=None,
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blocksize=None, latency=0, channels=1, subtype='PCM_24'):
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"""
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Records audio to a sound file (support formats: wav, raw)
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:param outfile: Sound file (default: the method will create a temporary file with the recording)
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:type outfile: str
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:param duration: Recording duration in seconds (default: record until stop event)
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:type duration: float
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:param device: Input device (default: default configured device or system default audio input if not configured)
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:type device: int or str
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:param sample_rate: Recording sample rate (default: device default rate)
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:type sample_rate: int
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:param blocksize: Audio block size (default: configured `input_blocksize` or 2048)
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:type blocksize: int
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:param latency: Device latency in seconds (default: 0)
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:type latency: float
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:param channels: Number of channels (default: 1)
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:type channels: int
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:param subtype: Recording subtype - see `Soundfile docs - Subtypes <https://pysoundfile.readthedocs.io/en/0.9.0/#soundfile.available_subtypes>`_ for a list of the available subtypes (default: PCM_24)
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:type subtype: str
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"""
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def recording_thread(outfile, duration, device, sample_rate, blocksize,
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latency, channels, subtype):
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import sounddevice as sd
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self.recording_paused_changed.clear()
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if outfile:
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outfile = os.path.abspath(os.path.expanduser(outfile))
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else:
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outfile = tempfile.NamedTemporaryFile(
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prefix='recording_', suffix='.wav', delete=False,
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dir=tempfile.gettempdir()).name
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if os.path.isfile(outfile):
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self.logger.info('Removing existing audio file {}'.format(outfile))
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os.unlink(outfile)
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if device is None:
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device = self.input_device
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if device is None:
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device = self._get_default_device('input')
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if sample_rate is None:
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dev_info = sd.query_devices(device, 'input')
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sample_rate = int(dev_info['default_samplerate'])
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if blocksize is None:
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blocksize = self.input_blocksize
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q = queue.Queue()
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def audio_callback(indata, frames, time, status):
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while self._get_recording_state() == RecordingState.PAUSED:
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self.recording_paused_changed.wait()
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if status:
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self.logger.warning('Recording callback status: {}'.format(
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str(status)))
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q.put(indata.copy())
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try:
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import soundfile as sf
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import numpy
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with sf.SoundFile(outfile, mode='x', samplerate=sample_rate,
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channels=channels, subtype=subtype) as f:
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with sd.InputStream(samplerate=sample_rate, device=device,
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channels=channels, callback=audio_callback,
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latency=latency, blocksize=blocksize):
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self.start_recording()
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get_bus().post(SoundRecordingStartedEvent(filename=outfile))
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self.logger.info('Started recording from device [{}] to [{}]'.
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format(device, outfile))
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recording_started_time = time.time()
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while self._get_recording_state() != RecordingState.STOPPED \
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and (duration is None or
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time.time() - recording_started_time < duration):
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while self._get_recording_state() == RecordingState.PAUSED:
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self.recording_paused_changed.wait()
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get_args = {
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'block': True,
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'timeout': max(0, duration - (time.time() -
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recording_started_time))
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} if duration is not None else {}
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data = q.get(**get_args)
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f.write(data)
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f.flush()
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except queue.Empty as e:
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self.logger.warning('Recording timeout: audio callback failed?')
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finally:
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self.stop_recording()
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get_bus().post(SoundRecordingStoppedEvent(filename=outfile))
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Thread(target=recording_thread, args=(
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outfile, duration, device, sample_rate, blocksize, latency, channels,
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subtype)).start()
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@action
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def recordplay(self, duration=None, input_device=None, output_device=None,
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sample_rate=None, blocksize=None, latency=0, channels=1,
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dtype=None):
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"""
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Records audio and plays it on an output sound device (audio pass-through)
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:param duration: Recording duration in seconds (default: record until stop event)
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:type duration: float
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:param input_device: Input device (default: default configured device or system default audio input if not configured)
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:type input_device: int or str
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|
|
:param output_device: Output device (default: default configured device or system default audio output if not configured)
|
|
:type output_device: int or str
|
|
|
|
:param sample_rate: Recording sample rate (default: device default rate)
|
|
:type sample_rate: int
|
|
|
|
:param blocksize: Audio block size (default: configured `output_blocksize` or 2048)
|
|
:type blocksize: int
|
|
|
|
:param latency: Device latency in seconds (default: 0)
|
|
:type latency: float
|
|
|
|
:param channels: Number of channels (default: 1)
|
|
:type channels: int
|
|
|
|
:param dtype: Data type for the recording - see `Soundfile docs - Recording <https://python-sounddevice.readthedocs.io/en/0.3.12/_modules/sounddevice.html#rec>`_ for available types (default: input device default)
|
|
:type dtype: str
|
|
"""
|
|
|
|
import sounddevice as sd
|
|
|
|
self.recording_paused_changed.clear()
|
|
|
|
if input_device is None:
|
|
input_device = self.input_device
|
|
if input_device is None:
|
|
input_device = self._get_default_device('input')
|
|
|
|
if output_device is None:
|
|
output_device = self.output_device
|
|
if output_device is None:
|
|
output_device = self._get_default_device('output')
|
|
|
|
if sample_rate is None:
|
|
dev_info = sd.query_devices(input_device, 'input')
|
|
sample_rate = int(dev_info['default_samplerate'])
|
|
|
|
if blocksize is None:
|
|
blocksize = self.output_blocksize
|
|
|
|
def audio_callback(indata, outdata, frames, time, status):
|
|
while self._get_recording_state() == RecordingState.PAUSED:
|
|
self.recording_paused_changed.wait()
|
|
|
|
if status:
|
|
self.logger.warning('Recording callback status: {}'.format(
|
|
str(status)))
|
|
|
|
outdata[:] = indata
|
|
|
|
|
|
stream_index = None
|
|
|
|
try:
|
|
import soundfile as sf
|
|
import numpy
|
|
|
|
stream_index = self._allocate_stream_index()
|
|
stream = sd.Stream(samplerate=sample_rate, channels=channels,
|
|
blocksize=blocksize, latency=latency,
|
|
device=(input_device, output_device),
|
|
dtype=dtype, callback=audio_callback)
|
|
self.start_recording()
|
|
self._start_playback(stream_index=stream_index,
|
|
stream=stream)
|
|
|
|
self.logger.info('Started recording pass-through from device ' +
|
|
'[{}] to sound device [{}]'.
|
|
format(input_device, output_device))
|
|
|
|
recording_started_time = time.time()
|
|
|
|
while self._get_recording_state() != RecordingState.STOPPED \
|
|
and (duration is None or
|
|
time.time() - recording_started_time < duration):
|
|
while self._get_recording_state() == RecordingState.PAUSED:
|
|
self.recording_paused_changed.wait()
|
|
|
|
time.sleep(0.1)
|
|
|
|
except queue.Empty as e:
|
|
self.logger.warning('Recording timeout: audio callback failed?')
|
|
finally:
|
|
self.stop_playback([stream_index])
|
|
self.stop_recording()
|
|
|
|
|
|
@action
|
|
def query_streams(self):
|
|
"""
|
|
:returns: A list of active audio streams
|
|
"""
|
|
|
|
streams = {
|
|
i: {
|
|
attr: getattr(stream, attr)
|
|
for attr in ['active', 'closed', 'stopped', 'blocksize',
|
|
'channels', 'cpu_load', 'device', 'dtype',
|
|
'latency', 'samplerate', 'samplesize']
|
|
if hasattr(stream, attr)
|
|
} for i, stream in self.active_streams.items()
|
|
}
|
|
|
|
for i, stream in streams.items():
|
|
stream['playback_state'] = self.playback_state[i].name
|
|
stream['name'] = self.stream_index_to_name.get(i)
|
|
if i in self.stream_mixes:
|
|
stream['mix'] = { j: sound for j, sound in
|
|
enumerate(list(self.stream_mixes[i])) }
|
|
|
|
return streams
|
|
|
|
|
|
def _get_or_allocate_stream_index(self, stream_index=None, stream_name=None,
|
|
completed_callback_event=None):
|
|
stream = None
|
|
|
|
with self.playback_state_lock:
|
|
if stream_index is None:
|
|
if stream_name is not None:
|
|
stream_index = self.stream_name_to_index.get(stream_name)
|
|
else:
|
|
if stream_name is not None:
|
|
raise RuntimeError('Redundant specification of both ' +
|
|
'stream_name and stream_index')
|
|
|
|
if stream_index is not None:
|
|
stream = self.active_streams.get(stream_index)
|
|
|
|
if not stream:
|
|
return (self._allocate_stream_index(stream_name=stream_name,
|
|
completed_callback_event=
|
|
completed_callback_event),
|
|
True)
|
|
|
|
return (stream_index, False)
|
|
|
|
def _allocate_stream_index(self, stream_name=None,
|
|
completed_callback_event=None):
|
|
stream_index = None
|
|
|
|
with self.playback_state_lock:
|
|
for i in range(len(self.active_streams)+1):
|
|
if i not in self.active_streams:
|
|
stream_index = i
|
|
break
|
|
|
|
if stream_index is None:
|
|
raise RuntimeError('No stream index available')
|
|
|
|
if stream_name is None:
|
|
stream_name = self._STREAM_NAME_PREFIX + str(stream_index)
|
|
|
|
self.active_streams[stream_index] = None
|
|
self.stream_mixes[stream_index] = Mix()
|
|
self.stream_index_to_name[stream_index] = stream_name
|
|
self.stream_name_to_index[stream_name] = stream_index
|
|
self.completed_callback_events[stream_index] = \
|
|
completed_callback_event if completed_callback_event else Event()
|
|
|
|
return stream_index
|
|
|
|
def _start_playback(self, stream_index, stream):
|
|
with self.playback_state_lock:
|
|
self.playback_state[stream_index] = PlaybackState.PLAYING
|
|
self.active_streams[stream_index] = stream
|
|
|
|
if isinstance(self.playback_paused_changed.get(stream_index), Event):
|
|
self.playback_paused_changed[stream_index].clear()
|
|
else:
|
|
self.playback_paused_changed[stream_index] = Event()
|
|
|
|
self.logger.info('Playback started on stream index {}'.
|
|
format(stream_index))
|
|
|
|
return stream_index
|
|
|
|
@action
|
|
def stop_playback(self, streams=None):
|
|
"""
|
|
:param streams: Streams to stop by index or name (default: all)
|
|
:type streams: list[int] or list[str]
|
|
"""
|
|
|
|
with self.playback_state_lock:
|
|
streams = streams or self.active_streams.keys()
|
|
if not streams:
|
|
return
|
|
completed_callback_events = {}
|
|
|
|
for i in streams:
|
|
stream = self.active_streams.get(i)
|
|
if not stream:
|
|
i = self.stream_name_to_index.get(i)
|
|
stream = self.active_streams.get(i)
|
|
if not stream:
|
|
self.logger.info('No such stream index or name: {}'.
|
|
format(i))
|
|
continue
|
|
|
|
if self.completed_callback_events[i]:
|
|
completed_callback_events[i] = self.completed_callback_events[i]
|
|
self.playback_state[i] = PlaybackState.STOPPED
|
|
|
|
for i, event in completed_callback_events.items():
|
|
event.wait()
|
|
|
|
if i in self.completed_callback_events:
|
|
del self.completed_callback_events[i]
|
|
if i in self.active_streams:
|
|
del self.active_streams[i]
|
|
if i in self.stream_mixes:
|
|
del self.stream_mixes[i]
|
|
|
|
if i in self.stream_index_to_name:
|
|
name = self.stream_index_to_name[i]
|
|
del self.stream_index_to_name[i]
|
|
if name in self.stream_name_to_index:
|
|
del self.stream_name_to_index[name]
|
|
|
|
self.logger.info('Playback stopped on streams [{}]'.format(
|
|
', '.join([str(stream) for stream in
|
|
completed_callback_events.keys()])))
|
|
|
|
@action
|
|
def pause_playback(self, streams=None):
|
|
"""
|
|
:param streams: Streams to pause by index (default: all)
|
|
:type streams: list[int]
|
|
"""
|
|
|
|
with self.playback_state_lock:
|
|
streams = streams or self.active_streams.keys()
|
|
if not streams:
|
|
return
|
|
|
|
for i in streams:
|
|
stream = self.active_streams.get(i)
|
|
if not stream:
|
|
i = self.stream_name_to_index.get(i)
|
|
stream = self.active_streams.get(i)
|
|
if not stream:
|
|
self.logger.info('No such stream index or name: {}'.
|
|
format(i))
|
|
continue
|
|
|
|
stream = self.active_streams[i]
|
|
if self.playback_state[i] == PlaybackState.PAUSED:
|
|
self.playback_state[i] = PlaybackState.PLAYING
|
|
elif self.playback_state[i] == PlaybackState.PLAYING:
|
|
self.playback_state[i] = PlaybackState.PAUSED
|
|
else:
|
|
continue
|
|
|
|
self.playback_paused_changed[i].set()
|
|
|
|
self.logger.info('Playback pause toggled on streams [{}]'.format(
|
|
', '.join([str(stream) for stream in streams])))
|
|
|
|
def start_recording(self):
|
|
with self.recording_state_lock:
|
|
self.recording_state = RecordingState.RECORDING
|
|
|
|
@action
|
|
def stop_recording(self):
|
|
with self.recording_state_lock:
|
|
self.recording_state = RecordingState.STOPPED
|
|
self.logger.info('Recording stopped')
|
|
|
|
@action
|
|
def pause_recording(self):
|
|
with self.recording_state_lock:
|
|
if self.recording_state == RecordingState.PAUSED:
|
|
self.recording_state = RecordingState.RECORDING
|
|
elif self.recording_state == RecordingState.RECORDING:
|
|
self.recording_state = RecordingState.PAUSED
|
|
else:
|
|
return
|
|
|
|
self.logger.info('Recording paused state toggled')
|
|
self.recording_paused_changed.set()
|
|
|
|
@action
|
|
def release(self, stream_index=None, stream_name=None,
|
|
sound_index=None, midi_note=None, frequency=None):
|
|
"""
|
|
Remove a sound from an active stream, either by sound index (use
|
|
:meth:`platypush.sound.plugin.SoundPlugin.query_streams` to get
|
|
the sounds playing on the active streams), midi_note, frequency
|
|
or absolute file path.
|
|
|
|
:param stream_index: Stream index (default: sound removed from all the
|
|
active streams)
|
|
:type stream_index: int
|
|
|
|
:param stream_name: Stream name (default: sound removed from all the
|
|
active streams)
|
|
:type stream_index: str
|
|
|
|
:param sound_index: Sound index
|
|
:type sound_index: int
|
|
|
|
:param midi_note: MIDI note
|
|
:type midi_note: int
|
|
|
|
:param frequency: Sound frequency
|
|
:type frequency: float
|
|
"""
|
|
|
|
if stream_name:
|
|
if stream_index:
|
|
raise RuntimeError('stream_index and stream name are ' +
|
|
'mutually exclusive')
|
|
stream_index = self.stream_name_to_index.get(stream_name)
|
|
|
|
mixes = {
|
|
i: mix for i, mix in self.stream_mixes.items()
|
|
} if stream_index is None else {
|
|
stream_index: self.stream_mixes[stream_index]
|
|
}
|
|
|
|
streams_to_stop = []
|
|
|
|
for i, mix in mixes.items():
|
|
for j, sound in enumerate(mix):
|
|
if (sound_index is not None and j == sound_index) or \
|
|
(midi_note is not None
|
|
and sound.get('midi_note') == midi_note) or \
|
|
(frequency is not None
|
|
and sound.get('frequency') == frequency):
|
|
if len(list(mix)) == 1:
|
|
# Last sound in the mix
|
|
streams_to_stop.append(i)
|
|
else:
|
|
mix.remove(j)
|
|
|
|
if streams_to_stop:
|
|
self.stop_playback(streams_to_stop)
|
|
|
|
def _get_playback_state(self, stream_index):
|
|
with self.playback_state_lock:
|
|
return self.playback_state[stream_index]
|
|
|
|
def _get_recording_state(self):
|
|
with self.recording_state_lock:
|
|
return self.recording_state
|
|
|
|
|
|
# vim:sw=4:ts=4:et:
|