Add Published Audio Capabilities Service #356
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| uuid=gatt.GATT_SUPPORTED_AUDIO_CONTEXTS_CHARACTERISTIC, | ||
| properties=gatt.Characteristic.Properties.READ, | ||
| permissions=gatt.Characteristic.Permissions.READABLE, | ||
| value=struct.pack('<HH', supported_sink_context, supported_source_context), |
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NOTE (for this and other characteristics in general): if the value could potentially be changed while the characteristic is published by a server, you could use a PackedCharacteristicAdapter with a pack_format (or other type of adapter), to do the ->bytes encoding on the fly as the characteristic is read.
| def __init__(self, service_proxy: gatt_client.ServiceProxy): | ||
| self.service_proxy = service_proxy | ||
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| self.available_audio_contexts = service_proxy.get_characteristics_by_uuid( |
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A future enhancement here would be to provide an adapter to convert the raw bytes into the actual fields (in this case here, I think available_audio_contexts get split into available_sink_context and available_source_context fields. Either a PackedCharacteristicAdapter or MappedCharacteristicAdapter or some other type of adapter would do that automatically (see battery_service.py or header_rate_service.py for examples).
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