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105 lines
2.5 KiB
Python
105 lines
2.5 KiB
Python
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'''
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IrBlaster
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============
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The :class:`IrBlaster` provides access to public methods by which your device
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can act as a remote and could be used to control your TV, AC, Music Player,
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Projectors, Set top box or anything that can be controlled by a remote.
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.. note::
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- On Android your app needs the TRANSMIT_IR permission which allows an
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application to use the device's IR transmitter, If available.
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Simple Examples
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---------------
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To get transmit an IR sequence::
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>>> from plyer import irblaster
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>>> irblaster.transmit(frequency, pattern, mode)
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To get frequencies::
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>>> irblaster.frequencies
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To check if IrBlaster exists::
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>>> irblaster.exists()
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True/False
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Supported Platforms
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-------------------
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Android
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'''
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class IrBlaster:
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'''
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Infrared blaster facade.
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'''
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@staticmethod
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def periods_to_microseconds(frequency, pattern):
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'''
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Convert a pattern from period counts to microseconds.
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'''
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period = 1000000. / frequency
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return [period * x for x in pattern]
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@staticmethod
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def microseconds_to_periods(frequency, pattern):
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'''
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Convert a pattern from microseconds to period counts.
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'''
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period = 1000000. / frequency
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return [x / period for x in pattern]
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@property
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def frequencies(self):
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'''
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Property which contains a list of frequency ranges
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supported by the device in the form:
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[(from1, to1),
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(from2, to2),
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...
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(fromN, toN)]
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'''
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return self.get_frequencies()
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def get_frequencies(self):
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return self._get_frequencies()
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def transmit(self, frequency, pattern, mode='period'):
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'''
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Transmit an IR sequence.
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:parameters:
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`frequency`: int
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Carrier frequency for the IR transmission.
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`pattern`: list[int]
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Burst pair pattern to transmit.
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`mode`: str, defaults to 'period'
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Specifies the format of the pattern values.
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Can be 'period' or 'microseconds'.
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'''
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return self._transmit(frequency, pattern, mode)
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def exists(self):
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'''
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Check if the device has an infrared emitter.
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'''
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return self._exists()
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# private
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def _get_frequencies(self):
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raise NotImplementedError()
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def _transmit(self, frequency, pattern, mode):
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raise NotImplementedError()
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def _exists(self):
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raise NotImplementedError()
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