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66 lines
2.7 KiB
Python
66 lines
2.7 KiB
Python
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# this is based on jsarray.py
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from ..base import *
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try:
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import numpy
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except:
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pass
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@Js
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def Uint8ClampedArray():
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TypedArray = (PyJsInt8Array,PyJsUint8Array,PyJsUint8ClampedArray,PyJsInt16Array,PyJsUint16Array,PyJsInt32Array,PyJsUint32Array,PyJsFloat32Array,PyJsFloat64Array)
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a = arguments[0]
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if isinstance(a, PyJsNumber): # length
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length = a.to_uint32()
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if length!=a.value:
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raise MakeError('RangeError', 'Invalid array length')
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temp = Js(numpy.full(length, 0, dtype=numpy.uint8), Clamped=True)
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temp.put('length', a)
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return temp
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elif isinstance(a, PyJsString): # object (string)
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temp = Js(numpy.array(list(a.value), dtype=numpy.uint8), Clamped=True)
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temp.put('length', Js(len(list(a.value))))
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return temp
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elif isinstance(a, PyJsArray) or isinstance(a,TypedArray) or isinstance(a,PyJsArrayBuffer): # object (Array, TypedArray)
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array = a.to_list()
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array = [(int(item.value) if item.value != None else 0) for item in array]
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temp = Js(numpy.array(array, dtype=numpy.uint8), Clamped=True)
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temp.put('length', Js(len(array)))
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return temp
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elif isinstance(a,PyObjectWrapper): # object (ArrayBuffer, etc)
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if len(arguments) > 1:
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offset = int(arguments[1].value)
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else:
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offset = 0
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if len(arguments) > 2:
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length = int(arguments[2].value)
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else:
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length = int(len(a.obj)-offset)
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array = numpy.frombuffer(a.obj, dtype=numpy.uint8, count=length, offset=offset)
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temp = Js(array, Clamped=True)
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temp.put('length', Js(length))
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temp.buff = array
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return temp
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temp = Js(numpy.full(0, 0, dtype=numpy.uint8), Clamped=True)
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temp.put('length', Js(0))
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return temp
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Uint8ClampedArray.create = Uint8ClampedArray
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Uint8ClampedArray.own['length']['value'] = Js(3)
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Uint8ClampedArray.define_own_property('prototype', {'value': Uint8ClampedArrayPrototype,
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'enumerable': False,
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'writable': False,
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'configurable': False})
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Uint8ClampedArrayPrototype.define_own_property('constructor', {'value': Uint8ClampedArray,
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'enumerable': False,
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'writable': True,
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'configurable': True})
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Uint8ClampedArrayPrototype.define_own_property('BYTES_PER_ELEMENT', {'value': Js(1),
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'enumerable': False,
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'writable': False,
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'configurable': False})
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