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114 lines
3.3 KiB
Python
114 lines
3.3 KiB
Python
#
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# Partially compatible AWIPS-II Thrift Binary Protocol
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#
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#
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# SOFTWARE HISTORY
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#
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# Date Ticket# Engineer Description
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# ------------ ---------- ----------- --------------------------
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# 11/11/09 chammack Initial Creation.
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# 06/09/10 njensen Added float, list methods
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# Apr 24, 2015 4425 nabowle Add F64List support.
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#
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#
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from thrift.protocol.TProtocol import *
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from thrift.protocol.TBinaryProtocol import *
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import struct
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import numpy
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FLOAT = 64
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intList = numpy.dtype(numpy.int32).newbyteorder('>')
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floatList = numpy.dtype(numpy.float32).newbyteorder('>')
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longList = numpy.dtype(numpy.int64).newbyteorder('>')
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shortList = numpy.dtype(numpy.int16).newbyteorder('>')
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byteList = numpy.dtype(numpy.int8).newbyteorder('>')
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doubleList = numpy.dtype(numpy.float64).newbyteorder('>')
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class SelfDescribingBinaryProtocol(TBinaryProtocol):
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def readFieldBegin(self):
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ftype = self.readByte()
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if ftype == TType.STOP:
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return None, ftype, 0
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name = self.readString()
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fid = self.readI16()
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return name, ftype, fid
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def readStructBegin(self):
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return self.readString()
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def writeStructBegin(self, name):
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self.writeString(name)
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def writeFieldBegin(self, name, ftype, fid):
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self.writeByte(ftype)
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self.writeString(name)
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self.writeI16(fid)
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def readFloat(self):
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d = self.readI32()
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dAsBytes = struct.pack('i', d)
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f = struct.unpack('f', dAsBytes)
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return f[0]
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def writeFloat(self, f):
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dAsBytes = struct.pack('f', f)
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i = struct.unpack('i', dAsBytes)
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self.writeI32(i[0])
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def readI32List(self, sz):
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buff = self.trans.readAll(4*sz)
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val = numpy.frombuffer(buff, dtype=intList, count=sz)
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return val
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def readF32List(self, sz):
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buff = self.trans.readAll(4*sz)
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val = numpy.frombuffer(buff, dtype=floatList, count=sz)
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return val
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def readF64List(self, sz):
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buff = self.trans.readAll(8*sz)
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val = numpy.frombuffer(buff, dtype=doubleList, count=sz)
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return val
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def readI64List(self, sz):
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buff = self.trans.readAll(8*sz)
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val = numpy.frombuffer(buff, dtype=longList, count=sz)
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return val
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def readI16List(self, sz):
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buff = self.trans.readAll(2*sz)
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val = numpy.frombuffer(buff, dtype=shortList, count=sz)
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return val
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def readI8List(self, sz):
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buff = self.trans.readAll(sz)
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val = numpy.frombuffer(buff, dtype=byteList, count=sz)
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return val
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def writeI32List(self, buff):
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b = numpy.asarray(buff, intList)
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self.trans.write(numpy.getbuffer(b))
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def writeF32List(self, buff):
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b = numpy.asarray(buff, floatList)
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self.trans.write(numpy.getbuffer(b))
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def writeF64List(self, buff):
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b = numpy.asarray(buff, doubleList)
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self.trans.write(numpy.getbuffer(b))
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def writeI64List(self, buff):
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b = numpy.asarray(buff, longList)
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self.trans.write(numpy.getbuffer(b))
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def writeI16List(self, buff):
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b = numpy.asarray(buff, shortList)
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self.trans.write(numpy.getbuffer(b))
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def writeI8List(self, buff):
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b = numpy.asarray(buff, byteList)
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self.trans.write(numpy.getbuffer(b))
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