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Mark Qvist
185
LXST/Platforms/darwin/coreaudioconstants.py
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185
LXST/Platforms/darwin/coreaudioconstants.py
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# Adapted from Bastian Bechtold's soundcard library, originally released
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# under the BSD 3-Clause License
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#
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# https://github.com/bastibe/SoundCard
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#
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# Copyright (c) 2016 Bastian Bechtold
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the
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# distribution.
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#
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# 3. Neither the name of the copyright holder nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Modifications and improvements Copyright 2025 Mark Qvist, and released
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# under the same BSD 3-Clause License.
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kAudioObjectSystemObject = 1
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kAudioHardwarePropertyDevices = int.from_bytes(b'dev#', byteorder='big')
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kAudioHardwarePropertyDefaultInputDevice = int.from_bytes(b'dIn ', byteorder='big')
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kAudioHardwarePropertyDefaultOutputDevice = int.from_bytes(b'dOut', byteorder='big')
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kAudioObjectPropertyScopeGlobal = int.from_bytes(b'glob', byteorder='big')
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kAudioObjectPropertyScopeInput = int.from_bytes(b'inpt', byteorder='big')
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kAudioObjectPropertyScopeOutput = int.from_bytes(b'outp', byteorder='big')
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kAudioObjectPropertyScopePlayThrough = int.from_bytes(b'ptru', byteorder='big')
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kAudioObjectPropertyName = int.from_bytes(b'lnam', byteorder='big')
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kAudioObjectPropertyModelName = int.from_bytes(b'lmod', byteorder='big')
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kAudioObjectPropertyManufacturer = int.from_bytes(b'lmak', byteorder='big')
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kAudioDevicePropertyNominalSampleRate = int.from_bytes(b'nsrt', byteorder='big')
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kAudioDevicePropertyBufferFrameSize = int.from_bytes(b'fsiz', byteorder='big')
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kAudioDevicePropertyBufferFrameSizeRange = int.from_bytes(b'fsz#', byteorder='big')
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kAudioDevicePropertyUsesVariableBufferFrameSizes = int.from_bytes(b'vfsz', byteorder='big')
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kAudioDevicePropertyStreamConfiguration = int.from_bytes(b'slay', byteorder='big')
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kCFStringEncodingUTF8 = 0x08000100
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kAudioObjectPropertyElementMaster = 0
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kAudioUnitType_Output = int.from_bytes(b'auou', byteorder='big')
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kAudioUnitManufacturer_Apple = int.from_bytes(b'appl', byteorder='big')
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kAudioUnitSubType_GenericOutput = int.from_bytes(b'genr', byteorder='big')
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kAudioUnitSubType_HALOutput = int.from_bytes(b'ahal', byteorder='big')
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kAudioUnitSubType_DefaultOutput = int.from_bytes(b'def ', byteorder='big')
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# The audio unit can do input from the device as well as output to the
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# device. Bus 0 is used for the output side, bus 1 is used to get audio
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# input from the device.
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outputbus = 0
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inputbus = 1
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def error_number_to_string(num):
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if num == kAudioUnitErr_InvalidProperty:
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return "The property is not supported"
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elif num == kAudioUnitErr_InvalidParameter:
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return "The parameter is not supported"
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elif num == kAudioUnitErr_InvalidElement:
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return "The specified element is not valid"
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elif num == kAudioUnitErr_NoConnection:
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return "There is no connection (generally an audio unit is asked to render but it has" \
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" not input from which to gather data)"
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elif num == kAudioUnitErr_FailedInitialization:
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return "The audio unit is unable to be initialized"
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elif num == kAudioUnitErr_TooManyFramesToProcess:
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return "When an audio unit is initialized it has a value which specifies the max" \
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" number of frames it will be asked to render at any given time. If an audio" \
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" unit is asked to render more than this, this error is returned."
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elif num == kAudioUnitErr_InvalidFile:
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return "If an audio unit uses external files as a data source, this error is returned" \
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" if a file is invalid (Apple's DLS synth returns this error)"
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elif num == kAudioUnitErr_UnknownFileType:
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return "If an audio unit uses external files as a data source, this error is returned" \
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" if a file is invalid (Apple's DLS synth returns this error)"
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elif num == kAudioUnitErr_FileNotSpecified:
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return "If an audio unit uses external files as a data source, this error is returned" \
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" if a file hasn't been set on it (Apple's DLS synth returns this error)"
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elif num == kAudioUnitErr_FormatNotSupported:
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return "Returned if an input or output format is not supported"
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elif num == kAudioUnitErr_Uninitialized:
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return "Returned if an operation requires an audio unit to be initialized and it is not."
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elif num == kAudioUnitErr_InvalidScope:
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return "The specified scope is invalid"
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elif num == kAudioUnitErr_PropertyNotWritable:
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return "The property cannot be written"
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elif num == kAudioUnitErr_CannotDoInCurrentContext:
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return "Returned when an audio unit is in a state where it can't perform the requested" \
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" action now - but it could later. Its usually used to guard a render operation" \
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" when a reconfiguration of its internal state is being performed."
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elif num == kAudioUnitErr_InvalidPropertyValue:
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return "The property is valid, but the value of the property being provided is not"
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elif num == kAudioUnitErr_PropertyNotInUse:
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return "Returned when a property is valid, but it hasn't been set to a valid value at this time."
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elif num == kAudioUnitErr_Initialized:
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return "Indicates the operation cannot be performed because the audio unit is initialized."
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elif num == kAudioUnitErr_InvalidOfflineRender:
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return "Used to indicate that the offline render operation is invalid. For instance," \
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" when the audio unit needs to be pre-flighted, but it hasn't been."
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elif num == kAudioUnitErr_Unauthorized:
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return "Returned by either Open or Initialize, this error is used to indicate that the" \
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" audio unit is not authorised, that it cannot be used. A host can then present" \
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" a UI to notify the user the audio unit is not able to be used in its current state."
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elif num == kAudioComponentErr_InstanceInvalidated:
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return "the component instance's implementation is not available, most likely because the process" \
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" that published it is no longer running"
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else:
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return "error number {}".format(num)
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kAudioUnitErr_InvalidProperty = -10879
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kAudioUnitErr_InvalidParameter = -10878
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kAudioUnitErr_InvalidElement = -10877
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kAudioUnitErr_NoConnection = -10876
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kAudioUnitErr_FailedInitialization = -10875
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kAudioUnitErr_TooManyFramesToProcess = -10874
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kAudioUnitErr_InvalidFile = -10871
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kAudioUnitErr_UnknownFileType = -10870
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kAudioUnitErr_FileNotSpecified = -10869
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kAudioUnitErr_FormatNotSupported = -10868
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kAudioUnitErr_Uninitialized = -10867
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kAudioUnitErr_InvalidScope = -10866
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kAudioUnitErr_PropertyNotWritable = -10865
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kAudioUnitErr_CannotDoInCurrentContext = -10863
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kAudioUnitErr_InvalidPropertyValue = -10851
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kAudioUnitErr_PropertyNotInUse = -10850
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kAudioUnitErr_Initialized = -10849
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kAudioUnitErr_InvalidOfflineRender = -10848
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kAudioUnitErr_Unauthorized = -10847
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kAudioComponentErr_InstanceInvalidated = -66749
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kAudioUnitErr_RenderTimeout = -66745
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kAudioOutputUnitProperty_CurrentDevice = 2000
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kAudioOutputUnitProperty_EnableIO = 2003 # scope output, element 0 == output,
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kAudioOutputUnitProperty_HasIO = 2006 # scope input, element 1 == input
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kAudioOutputUnitProperty_IsRunning = 2001
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kAudioOutputUnitProperty_ChannelMap = 2002
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kAudioFormatLinearPCM = int.from_bytes(b'lpcm', byteorder='big')
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kAudioFormatFlagIsFloat = 0x1
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kAudioUnitProperty_StreamFormat = 8
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kAudioUnitProperty_CPULoad = 6
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kAudioUnitProperty_Latency = 12
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kAudioUnitProperty_SupportedNumChannels = 13
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kAudioUnitProperty_MaximumFramesPerSlice = 14
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kAudioUnitProperty_SetRenderCallback = 23
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kAudioOutputUnitProperty_SetInputCallback = 2005
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kAudioUnitProperty_StreamFormat = 8
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kAudioUnitProperty_SampleRate = 2
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kAudioUnitProperty_ContextName = 25
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kAudioUnitProperty_ElementName = 30
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kAudioUnitProperty_NickName = 54
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kAudioUnitRenderAction_PreRender = 1 << 2
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kAudioUnitRenderAction_PostRender = 1 << 3
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kAudioUnitRenderAction_OutputIsSilence = 1 << 4
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kAudioOfflineUnitRenderAction_Preflight = 1 << 5
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kAudioOfflineUnitRenderAction_Render = 1 << 6
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kAudioOfflineUnitRenderAction_Complete = 1 << 7
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kAudioUnitRenderAction_PostRenderError = 1 << 8
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kAudioUnitRenderAction_DoNotCheckRenderArgs = 1 << 9
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kAudioUnitScope_Global = 0 # The context for audio unit characteristics that apply to the audio unit as a whole
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kAudioUnitScope_Input = 1 # The context for audio data coming into an audio unit
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kAudioUnitScope_Output = 2 # The context for audio data leaving an audio unit
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@@ -55,7 +55,7 @@ with open(os.path.join(_package_dir, 'coreaudio.h'), 'rt') as f:
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_ca = _ffi.dlopen('CoreAudio')
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_au = _ffi.dlopen('AudioUnit')
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from soundcard import coreaudioconstants as _cac
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import LXST.Platforms.darwin.coreaudioconstants as _cac
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def all_speakers():
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@@ -581,11 +581,12 @@ class Telephone(SignallingReceiver):
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self.audio_input.stop()
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self.transmit_mixer.stop()
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self.transmit_pipeline.stop()
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self.transmit_mixer = Mixer(target_frame_ms=self.target_frame_time_ms, gain=self.transmit_gain)
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self.audio_input = LineSource(preferred_device=self.microphone_device, target_frame_ms=self.target_frame_time_ms, codec=Raw(), sink=self.transmit_mixer, filters=self.active_call.filters)
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self.transmit_pipeline = Pipeline(source=self.transmit_mixer,
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codec=self.transmit_codec,
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sink=self.active_call.packetizer)
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self.transmit_mixer = Mixer(target_frame_ms=self.target_frame_time_ms, gain=self.transmit_gain)
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self.audio_input = LineSource(preferred_device=self.microphone_device, target_frame_ms=self.target_frame_time_ms, codec=Raw(),
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sink=self.transmit_mixer, filters=self.active_call.filters, skip=0.075, ease_in=0.0)
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self.transmit_pipeline = Pipeline(source=self.transmit_mixer, codec=self.transmit_codec, sink=self.active_call.packetizer)
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self.transmit_mixer.mute(self.__transmit_muted)
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self.transmit_mixer.start()
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@@ -609,11 +610,13 @@ class Telephone(SignallingReceiver):
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self.__prepare_dialling_pipelines()
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self.active_call.packetizer = Packetizer(self.active_call, failure_callback=self.__packetizer_failure)
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self.transmit_mixer = Mixer(target_frame_ms=self.target_frame_time_ms, gain=self.transmit_gain)
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self.audio_input = LineSource(preferred_device=self.microphone_device, target_frame_ms=self.target_frame_time_ms, codec=Raw(), sink=self.transmit_mixer, filters=self.active_call.filters)
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self.transmit_pipeline = Pipeline(source=self.transmit_mixer,
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codec=self.transmit_codec,
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sink=self.active_call.packetizer)
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self.transmit_mixer = Mixer(target_frame_ms=self.target_frame_time_ms, gain=self.transmit_gain)
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self.audio_input = LineSource(preferred_device=self.microphone_device, target_frame_ms=self.target_frame_time_ms, codec=Raw(),
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sink=self.transmit_mixer, filters=self.active_call.filters, skip=0.075, ease_in=0.225)
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self.transmit_pipeline = Pipeline(source=self.transmit_mixer, codec=self.transmit_codec, sink=self.active_call.packetizer)
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self.active_call.audio_source = LinkSource(link=self.active_call, signalling_receiver=self, sink=self.receive_mixer)
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self.receive_mixer.set_source_max_frames(self.active_call.audio_source, 2)
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@@ -1 +1 @@
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__version__ = "0.4.4"
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__version__ = "0.4.5"
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