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40 lines
1.7 KiB
C
40 lines
1.7 KiB
C
/*
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* Copyright 2008 Aike J Sommer <dev@aikesommer.name>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2,
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* or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef KEPHAL_EDID_H
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#define KEPHAL_EDID_H
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#define EDID_HEADER "\x00\xff\xff\xff\xff\xff\xff\x00"
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#define EDID_HEADER_SIZE 8
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#define EDID_TEST_HEADER(x) (memcmp(x, EDID_HEADER, EDID_HEADER_SIZE) == 0)
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#define EDID_VENDOR_START 8
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#define EDID_VENDOR_1(x) ('@' + ((x[EDID_VENDOR_START] & 0x7c) >> 2))
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#define EDID_VENDOR_2(x) ('@' + ((x[EDID_VENDOR_START] & 0x03) << 3) + ((x[EDID_VENDOR_START + 1] & 0xe0) >> 5))
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#define EDID_VENDOR_3(x) ('@' + (x[EDID_VENDOR_START + 1] & 0x1f))
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#define EDID_PRODUCT_ID_START (EDID_VENDOR_START + 2)
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#define EDID_PRODUCT_ID(x) (x[EDID_PRODUCT_ID_START] | (x[EDID_PRODUCT_ID_START + 1] << 8))
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#define EDID_SERIAL_NUMBER_START (EDID_PRODUCT_ID_START + 2)
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#define EDID_SERIAL_NUMBER(x) (x[EDID_SERIAL_NUMBER_START] | (x[EDID_SERIAL_NUMBER_START + 1] << 8) | (x[EDID_SERIAL_NUMBER_START + 2] << 16) | (x[EDID_SERIAL_NUMBER_START + 3] << 24))
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#endif // KEPHAL_EDID_H
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