pep8, pylint work. closes #94.
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jevans
parent
ebb15b0fba
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586e810a7f
1 changed files with 134 additions and 153 deletions
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@ -78,65 +78,63 @@ class Codestream(object):
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Supplying False may impose a large performance penalty.
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"""
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# Map each of the known markers to a method that processes them.
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process_marker_segment = {
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0xff00: self._parse_reserved_segment,
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0xff01: self._parse_reserved_segment,
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0xff30: self._parse_reserved_marker,
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0xff31: self._parse_reserved_marker,
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0xff32: self._parse_reserved_marker,
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0xff33: self._parse_reserved_marker,
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0xff34: self._parse_reserved_marker,
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0xff35: self._parse_reserved_marker,
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0xff36: self._parse_reserved_marker,
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0xff37: self._parse_reserved_marker,
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0xff38: self._parse_reserved_marker,
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0xff39: self._parse_reserved_marker,
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0xff3a: self._parse_reserved_marker,
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0xff3b: self._parse_reserved_marker,
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0xff3c: self._parse_reserved_marker,
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0xff3d: self._parse_reserved_marker,
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0xff3e: self._parse_reserved_marker,
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0xff3f: self._parse_reserved_marker,
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0xff4f: self._parse_reserved_segment,
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0xff50: self._parse_reserved_segment,
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0xff51: self._parse_siz_segment,
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0xff52: self._parse_cod_segment,
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0xff53: self._parse_coc_segment,
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0xff54: self._parse_reserved_segment,
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0xff55: self._parse_tlm_segment,
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0xff56: self._parse_reserved_segment,
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0xff57: self._parse_reserved_segment,
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0xff58: self._parse_plt_segment,
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0xff59: self._parse_reserved_segment,
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0xff5a: self._parse_reserved_segment,
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0xff5b: self._parse_reserved_segment,
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0xff5c: self._parse_qcd_segment,
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0xff5d: self._parse_qcc_segment,
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0xff5e: self._parse_rgn_segment,
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0xff5f: self._parse_pod_segment,
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0xff60: self._parse_ppm_segment,
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0xff61: self._parse_ppt_segment,
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0xff62: self._parse_reserved_segment,
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0xff63: self._parse_crg_segment,
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0xff64: self._parse_cme_segment,
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0xff65: self._parse_reserved_segment,
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0xff66: self._parse_reserved_segment,
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0xff67: self._parse_reserved_segment,
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0xff68: self._parse_reserved_segment,
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0xff69: self._parse_reserved_segment,
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0xff6a: self._parse_reserved_segment,
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0xff6b: self._parse_reserved_segment,
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0xff6c: self._parse_reserved_segment,
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0xff6d: self._parse_reserved_segment,
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0xff6e: self._parse_reserved_segment,
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0xff6f: self._parse_reserved_segment,
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0xff79: self._parse_unrecognized_segment,
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0xff90: self._parse_sot_segment,
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0xff91: self._parse_unrecognized_segment,
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0xff92: self._parse_unrecognized_segment,
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0xff93: self._parse_sod_segment,
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0xffd9: self._parse_eoc_segment,
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}
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process_marker_segment = {0xff00: self._parse_reserved_segment,
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0xff01: self._parse_reserved_segment,
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0xff30: self._parse_reserved_marker,
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0xff31: self._parse_reserved_marker,
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0xff32: self._parse_reserved_marker,
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0xff33: self._parse_reserved_marker,
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0xff34: self._parse_reserved_marker,
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0xff35: self._parse_reserved_marker,
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0xff36: self._parse_reserved_marker,
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0xff37: self._parse_reserved_marker,
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0xff38: self._parse_reserved_marker,
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0xff39: self._parse_reserved_marker,
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0xff3a: self._parse_reserved_marker,
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0xff3b: self._parse_reserved_marker,
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0xff3c: self._parse_reserved_marker,
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0xff3d: self._parse_reserved_marker,
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0xff3e: self._parse_reserved_marker,
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0xff3f: self._parse_reserved_marker,
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0xff4f: self._parse_reserved_segment,
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0xff50: self._parse_reserved_segment,
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0xff51: self._parse_siz_segment,
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0xff52: self._parse_cod_segment,
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0xff53: self._parse_coc_segment,
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0xff54: self._parse_reserved_segment,
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0xff55: self._parse_tlm_segment,
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0xff56: self._parse_reserved_segment,
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0xff57: self._parse_reserved_segment,
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0xff58: self._parse_plt_segment,
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0xff59: self._parse_reserved_segment,
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0xff5a: self._parse_reserved_segment,
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0xff5b: self._parse_reserved_segment,
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0xff5c: self._parse_qcd_segment,
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0xff5d: self._parse_qcc_segment,
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0xff5e: self._parse_rgn_segment,
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0xff5f: self._parse_pod_segment,
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0xff60: self._parse_ppm_segment,
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0xff61: self._parse_ppt_segment,
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0xff62: self._parse_reserved_segment,
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0xff63: self._parse_crg_segment,
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0xff64: self._parse_cme_segment,
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0xff65: self._parse_reserved_segment,
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0xff66: self._parse_reserved_segment,
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0xff67: self._parse_reserved_segment,
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0xff68: self._parse_reserved_segment,
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0xff69: self._parse_reserved_segment,
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0xff6a: self._parse_reserved_segment,
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0xff6b: self._parse_reserved_segment,
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0xff6c: self._parse_reserved_segment,
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0xff6d: self._parse_reserved_segment,
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0xff6e: self._parse_reserved_segment,
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0xff6f: self._parse_reserved_segment,
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0xff79: self._parse_unrecognized_segment,
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0xff90: self._parse_sot_segment,
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0xff91: self._parse_unrecognized_segment,
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0xff92: self._parse_unrecognized_segment,
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0xff93: self._parse_sod_segment,
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0xffd9: self._parse_eoc_segment}
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self.offset = fptr.tell()
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self.length = length
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@ -150,9 +148,8 @@ class Codestream(object):
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self.segment = []
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# First two bytes are the SOC marker
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# First two bytes are the SOC marker. We already know that.
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read_buffer = fptr.read(2)
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marker_id, = struct.unpack('>H', read_buffer)
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segment = SOCsegment(offset=fptr.tell() - 2, length=0)
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self.segment.append(segment)
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@ -208,7 +205,6 @@ class Codestream(object):
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fptr.seek(self._tile_offset[-1] + self._tile_length[-1])
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def _parse_unrecognized_segment(self, fptr):
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"""Looks like a valid marker, but not sure from reading the specs.
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"""
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@ -227,7 +223,6 @@ class Codestream(object):
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segment = self._parse_reserved_segment(fptr)
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return segment
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def _parse_reserved_marker(self, fptr):
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"""Marker range between 0xff30 and 0xff39.
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"""
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@ -235,7 +230,6 @@ class Codestream(object):
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segment = Segment(marker_id=the_id, offset=self._offset, length=0)
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return segment
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def _parse_reserved_segment(self, fptr):
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"""Parse valid marker segment, segment description is unknown.
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@ -258,7 +252,6 @@ class Codestream(object):
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offset=offset, length=length, data=data)
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return segment
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def _parse_tile_part_bit_stream(self, fptr, sod_marker, tile_length):
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"""Parse the tile part bit stream for SOP, EPH marker segments."""
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read_buffer = fptr.read(tile_length)
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@ -296,6 +289,7 @@ class Codestream(object):
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msg += ''.join(strs)
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return msg
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# pylint: disable=R0201
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def _parse_cme_segment(self, fptr):
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"""Parse the CME marker segment.
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@ -318,7 +312,6 @@ class Codestream(object):
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return CMEsegment(rcme, ccme, length, offset)
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def _parse_coc_segment(self, fptr):
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"""Parse the COC marker segment.
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@ -357,7 +350,6 @@ class Codestream(object):
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return COCsegment(ccoc, scoc, spcoc, length, offset)
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def _parse_cod_segment(self, fptr):
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"""Parse the COD segment.
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@ -388,10 +380,8 @@ class Codestream(object):
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else:
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self._parse_tpart_flag = False
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return CODsegment(scod, spcod, length, offset)
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def _parse_crg_segment(self, fptr):
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"""Parse the CRG marker segment.
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@ -416,7 +406,6 @@ class Codestream(object):
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return CRGsegment(xcrg, ycrg, length, offset)
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def _parse_eoc_segment(self, fptr):
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"""Parse the EOC (end-of-codestream) marker segment.
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@ -434,7 +423,6 @@ class Codestream(object):
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return EOCsegment(length, offset)
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def _parse_plt_segment(self, fptr):
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"""Parse the PLT segment.
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@ -474,7 +462,6 @@ class Codestream(object):
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return PLTsegment(zplt, iplt, length, offset)
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def _parse_pod_segment(self, fptr):
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"""Parse the POD segment.
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@ -527,7 +514,6 @@ class Codestream(object):
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return PPMsegment(zppm, read_buffer, length, offset)
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def _parse_ppt_segment(self, fptr):
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"""Parse the PPT segment.
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@ -555,7 +541,6 @@ class Codestream(object):
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return PPTsegment(zppt, ippt, length, offset)
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def _parse_qcc_segment(self, fptr):
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"""Parse the QCC segment.
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@ -674,7 +659,6 @@ class Codestream(object):
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return segment
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def _parse_sod_segment(self, fptr):
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"""Parse the SOD (start-of-data) segment.
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@ -692,7 +676,6 @@ class Codestream(object):
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return SODsegment(length, offset)
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def _parse_sot_segment(self, fptr):
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"""Parse the SOT segment.
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@ -731,7 +714,6 @@ class Codestream(object):
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return segment
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def _parse_tlm_segment(self, fptr):
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"""Parse the TLM segment.
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@ -785,7 +767,6 @@ class Codestream(object):
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return TLMsegment(length, offset, ztlm, ttlm, ptlm)
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class Segment(object):
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"""Segment information.
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