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69 lines
2.2 KiB
69 lines
2.2 KiB
# -*- coding: utf-8 -*-
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# Copyright 2020 Mir Calculate. http://www.calculate-linux.org
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import sys
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import re
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from ..cl_lang import setLocalTranslate
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from . import device
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from .files import process, getProgPath
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_ = lambda x: x
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setLocalTranslate('cl_lib3', sys.modules[__name__])
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def get_edid_data():
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for fn in device.sysfs.glob(device.sysfs.Path.Drm,"*/edid"):
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ediddata = device.sysfs.read(fn, binary=True)
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if ediddata:
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return ediddata
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return None
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class EdidInfoError(Exception):
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pass
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class EdidInfo():
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reBaseEDID = re.compile("\nBlock \d, Base EDID:.*?\nChecksum:",
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re.S)
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reDTD = re.compile(r"DTD\s+\d+:\s*(\d+x\d+)\s+(?:[0-9.]+\s+Hz)"
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"\s+(\d+:\d+)\s+[^(]+\((\d+) mm x (\d+) mm\)")
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def __init__(self):
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self.edid_decode = getProgPath('/usr/bin/edid-decode')
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if not self.edid_decode:
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raise EdidInfoError(_("{} not found"))
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self.resolution = None
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self.ratio = None
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self.screensize = None
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def set_data(self, data):
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p = process(self.edid_decode, "-")
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p.write(data)
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if p.failed():
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raise EdidInfoError(
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_("Failed to parse EDID information: {}").format(p.readerr()))
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self.parse(p.read())
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def parse(self, edid_decode_data):
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m = self.reBaseEDID.search(edid_decode_data)
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if not m:
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raise EdidInfoError(_("Failed to get Base EDID block"))
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base_edid = m.group()
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m = self.reDTD.search(base_edid)
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if not m:
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raise EdidInfoError(_("Failed to get DTD record"))
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self.resolution, self.ratio, sizex, sizey = m.groups()
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self.screensize = "{}x{}".format(sizex, sizey)
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