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https://github.com/brl/mutter.git
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MonitorXrandr: implement correct EDID parsing
To provide valid values for the vendor, product and serial fields we need to read the EDID and parse it. Parser kindly provided by gnome-desktop. https://bugzilla.gnome.org/show_bug.cgi?id=705670
This commit is contained in:
Giovanni Campagna
Giovanni Campagna
parent
57077435ed
commit
69467842ab
@ -95,6 +95,8 @@ libmutter_la_SOURCES = \
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ui/draw-workspace.h \
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core/edge-resistance.c \
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core/edge-resistance.h \
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core/edid-parse.c \
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core/edid.h \
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core/errors.c \
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meta/errors.h \
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core/frame.c \
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539
src/core/edid-parse.c
Normal file
539
src/core/edid-parse.c
Normal file
@ -0,0 +1,539 @@
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/*
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* Copyright 2007 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* on the rights to use, copy, modify, merge, publish, distribute, sub
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* license, and/or sell copies of the Software, and to permit persons to whom
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* the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/* Author: Soren Sandmann <sandmann@redhat.com> */
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#include "edid.h"
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#include <glib.h>
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static int
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get_bit (int in, int bit)
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{
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return (in & (1 << bit)) >> bit;
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}
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static int
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get_bits (int in, int begin, int end)
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{
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int mask = (1 << (end - begin + 1)) - 1;
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return (in >> begin) & mask;
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}
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static int
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decode_header (const uchar *edid)
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{
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if (memcmp (edid, "\x00\xff\xff\xff\xff\xff\xff\x00", 8) == 0)
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return TRUE;
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return FALSE;
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}
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static int
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decode_vendor_and_product_identification (const uchar *edid, MonitorInfo *info)
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{
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int is_model_year;
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/* Manufacturer Code */
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info->manufacturer_code[0] = get_bits (edid[0x08], 2, 6);
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info->manufacturer_code[1] = get_bits (edid[0x08], 0, 1) << 3;
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info->manufacturer_code[1] |= get_bits (edid[0x09], 5, 7);
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info->manufacturer_code[2] = get_bits (edid[0x09], 0, 4);
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info->manufacturer_code[3] = '\0';
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info->manufacturer_code[0] += 'A' - 1;
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info->manufacturer_code[1] += 'A' - 1;
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info->manufacturer_code[2] += 'A' - 1;
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/* Product Code */
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info->product_code = edid[0x0b] << 8 | edid[0x0a];
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/* Serial Number */
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info->serial_number =
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edid[0x0c] | edid[0x0d] << 8 | edid[0x0e] << 16 | edid[0x0f] << 24;
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/* Week and Year */
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is_model_year = FALSE;
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switch (edid[0x10])
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{
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case 0x00:
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info->production_week = -1;
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break;
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case 0xff:
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info->production_week = -1;
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is_model_year = TRUE;
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break;
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default:
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info->production_week = edid[0x10];
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break;
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}
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if (is_model_year)
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{
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info->production_year = -1;
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info->model_year = 1990 + edid[0x11];
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}
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else
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{
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info->production_year = 1990 + edid[0x11];
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info->model_year = -1;
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}
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return TRUE;
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}
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static int
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decode_edid_version (const uchar *edid, MonitorInfo *info)
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{
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info->major_version = edid[0x12];
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info->minor_version = edid[0x13];
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return TRUE;
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}
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static int
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decode_display_parameters (const uchar *edid, MonitorInfo *info)
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{
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/* Digital vs Analog */
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info->is_digital = get_bit (edid[0x14], 7);
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if (info->is_digital)
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{
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int bits;
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static const int bit_depth[8] =
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{
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-1, 6, 8, 10, 12, 14, 16, -1
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};
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static const Interface interfaces[6] =
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{
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UNDEFINED, DVI, HDMI_A, HDMI_B, MDDI, DISPLAY_PORT
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};
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bits = get_bits (edid[0x14], 4, 6);
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info->connector.digital.bits_per_primary = bit_depth[bits];
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bits = get_bits (edid[0x14], 0, 3);
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if (bits <= 5)
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info->connector.digital.interface = interfaces[bits];
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else
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info->connector.digital.interface = UNDEFINED;
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}
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else
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{
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int bits = get_bits (edid[0x14], 5, 6);
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static const double levels[][3] =
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{
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{ 0.7, 0.3, 1.0 },
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{ 0.714, 0.286, 1.0 },
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{ 1.0, 0.4, 1.4 },
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{ 0.7, 0.0, 0.7 },
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};
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info->connector.analog.video_signal_level = levels[bits][0];
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info->connector.analog.sync_signal_level = levels[bits][1];
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info->connector.analog.total_signal_level = levels[bits][2];
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info->connector.analog.blank_to_black = get_bit (edid[0x14], 4);
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info->connector.analog.separate_hv_sync = get_bit (edid[0x14], 3);
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info->connector.analog.composite_sync_on_h = get_bit (edid[0x14], 2);
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info->connector.analog.composite_sync_on_green = get_bit (edid[0x14], 1);
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info->connector.analog.serration_on_vsync = get_bit (edid[0x14], 0);
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}
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/* Screen Size / Aspect Ratio */
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if (edid[0x15] == 0 && edid[0x16] == 0)
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{
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info->width_mm = -1;
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info->height_mm = -1;
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info->aspect_ratio = -1.0;
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}
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else if (edid[0x16] == 0)
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{
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info->width_mm = -1;
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info->height_mm = -1;
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info->aspect_ratio = 100.0 / (edid[0x15] + 99);
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}
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else if (edid[0x15] == 0)
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{
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info->width_mm = -1;
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info->height_mm = -1;
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info->aspect_ratio = 100.0 / (edid[0x16] + 99);
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info->aspect_ratio = 1/info->aspect_ratio; /* portrait */
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}
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else
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{
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info->width_mm = 10 * edid[0x15];
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info->height_mm = 10 * edid[0x16];
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}
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/* Gamma */
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if (edid[0x17] == 0xFF)
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info->gamma = -1.0;
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else
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info->gamma = (edid[0x17] + 100.0) / 100.0;
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/* Features */
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info->standby = get_bit (edid[0x18], 7);
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info->suspend = get_bit (edid[0x18], 6);
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info->active_off = get_bit (edid[0x18], 5);
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if (info->is_digital)
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{
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info->connector.digital.rgb444 = TRUE;
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if (get_bit (edid[0x18], 3))
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info->connector.digital.ycrcb444 = 1;
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if (get_bit (edid[0x18], 4))
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info->connector.digital.ycrcb422 = 1;
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}
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else
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{
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int bits = get_bits (edid[0x18], 3, 4);
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ColorType color_type[4] =
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{
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MONOCHROME, RGB, OTHER_COLOR, UNDEFINED_COLOR
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};
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info->connector.analog.color_type = color_type[bits];
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}
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info->srgb_is_standard = get_bit (edid[0x18], 2);
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/* In 1.3 this is called "has preferred timing" */
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info->preferred_timing_includes_native = get_bit (edid[0x18], 1);
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/* FIXME: In 1.3 this indicates whether the monitor accepts GTF */
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info->continuous_frequency = get_bit (edid[0x18], 0);
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return TRUE;
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}
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static double
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decode_fraction (int high, int low)
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{
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double result = 0.0;
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int i;
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high = (high << 2) | low;
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for (i = 0; i < 10; ++i)
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result += get_bit (high, i) * pow (2, i - 10);
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return result;
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}
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static int
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decode_color_characteristics (const uchar *edid, MonitorInfo *info)
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{
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info->red_x = decode_fraction (edid[0x1b], get_bits (edid[0x19], 6, 7));
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info->red_y = decode_fraction (edid[0x1c], get_bits (edid[0x19], 5, 4));
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info->green_x = decode_fraction (edid[0x1d], get_bits (edid[0x19], 2, 3));
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info->green_y = decode_fraction (edid[0x1e], get_bits (edid[0x19], 0, 1));
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info->blue_x = decode_fraction (edid[0x1f], get_bits (edid[0x1a], 6, 7));
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info->blue_y = decode_fraction (edid[0x20], get_bits (edid[0x1a], 4, 5));
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info->white_x = decode_fraction (edid[0x21], get_bits (edid[0x1a], 2, 3));
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info->white_y = decode_fraction (edid[0x22], get_bits (edid[0x1a], 0, 1));
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return TRUE;
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}
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static int
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decode_established_timings (const uchar *edid, MonitorInfo *info)
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{
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static const Timing established[][8] =
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{
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{
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{ 800, 600, 60 },
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{ 800, 600, 56 },
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{ 640, 480, 75 },
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{ 640, 480, 72 },
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{ 640, 480, 67 },
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{ 640, 480, 60 },
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{ 720, 400, 88 },
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{ 720, 400, 70 }
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},
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{
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{ 1280, 1024, 75 },
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{ 1024, 768, 75 },
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{ 1024, 768, 70 },
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{ 1024, 768, 60 },
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{ 1024, 768, 87 },
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{ 832, 624, 75 },
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{ 800, 600, 75 },
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{ 800, 600, 72 }
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},
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{
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{ 0, 0, 0 },
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{ 0, 0, 0 },
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{ 0, 0, 0 },
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{ 0, 0, 0 },
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{ 0, 0, 0 },
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{ 0, 0, 0 },
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{ 0, 0, 0 },
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{ 1152, 870, 75 }
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},
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};
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int i, j, idx;
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idx = 0;
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for (i = 0; i < 3; ++i)
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{
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for (j = 0; j < 8; ++j)
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{
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int byte = edid[0x23 + i];
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if (get_bit (byte, j) && established[i][j].frequency != 0)
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info->established[idx++] = established[i][j];
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}
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}
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return TRUE;
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}
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static int
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decode_standard_timings (const uchar *edid, MonitorInfo *info)
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{
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int i;
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for (i = 0; i < 8; i++)
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{
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int first = edid[0x26 + 2 * i];
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int second = edid[0x27 + 2 * i];
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if (first != 0x01 && second != 0x01)
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{
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int w = 8 * (first + 31);
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int h = 0;
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switch (get_bits (second, 6, 7))
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{
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case 0x00: h = (w / 16) * 10; break;
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case 0x01: h = (w / 4) * 3; break;
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case 0x02: h = (w / 5) * 4; break;
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case 0x03: h = (w / 16) * 9; break;
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}
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info->standard[i].width = w;
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info->standard[i].height = h;
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info->standard[i].frequency = get_bits (second, 0, 5) + 60;
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}
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}
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return TRUE;
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}
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static void
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decode_lf_string (const uchar *s, int n_chars, char *result)
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{
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int i;
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for (i = 0; i < n_chars; ++i)
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{
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if (s[i] == 0x0a)
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{
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*result++ = '\0';
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break;
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}
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else if (s[i] == 0x00)
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{
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/* Convert embedded 0's to spaces */
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*result++ = ' ';
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}
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else
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{
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*result++ = s[i];
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}
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}
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}
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static void
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decode_display_descriptor (const uchar *desc,
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MonitorInfo *info)
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{
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switch (desc[0x03])
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{
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case 0xFC:
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decode_lf_string (desc + 5, 13, info->dsc_product_name);
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break;
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case 0xFF:
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decode_lf_string (desc + 5, 13, info->dsc_serial_number);
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break;
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case 0xFE:
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decode_lf_string (desc + 5, 13, info->dsc_string);
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break;
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case 0xFD:
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/* Range Limits */
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break;
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case 0xFB:
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/* Color Point */
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break;
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case 0xFA:
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/* Timing Identifications */
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break;
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case 0xF9:
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/* Color Management */
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break;
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case 0xF8:
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/* Timing Codes */
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break;
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case 0xF7:
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/* Established Timings */
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break;
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case 0x10:
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break;
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}
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}
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static void
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decode_detailed_timing (const uchar *timing,
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DetailedTiming *detailed)
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{
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int bits;
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StereoType stereo[] =
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{
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NO_STEREO, NO_STEREO, FIELD_RIGHT, FIELD_LEFT,
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TWO_WAY_RIGHT_ON_EVEN, TWO_WAY_LEFT_ON_EVEN,
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FOUR_WAY_INTERLEAVED, SIDE_BY_SIDE
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};
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detailed->pixel_clock = (timing[0x00] | timing[0x01] << 8) * 10000;
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detailed->h_addr = timing[0x02] | ((timing[0x04] & 0xf0) << 4);
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detailed->h_blank = timing[0x03] | ((timing[0x04] & 0x0f) << 8);
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detailed->v_addr = timing[0x05] | ((timing[0x07] & 0xf0) << 4);
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detailed->v_blank = timing[0x06] | ((timing[0x07] & 0x0f) << 8);
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detailed->h_front_porch = timing[0x08] | get_bits (timing[0x0b], 6, 7) << 8;
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detailed->h_sync = timing[0x09] | get_bits (timing[0x0b], 4, 5) << 8;
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detailed->v_front_porch =
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get_bits (timing[0x0a], 4, 7) | get_bits (timing[0x0b], 2, 3) << 4;
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detailed->v_sync =
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get_bits (timing[0x0a], 0, 3) | get_bits (timing[0x0b], 0, 1) << 4;
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detailed->width_mm = timing[0x0c] | get_bits (timing[0x0e], 4, 7) << 8;
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detailed->height_mm = timing[0x0d] | get_bits (timing[0x0e], 0, 3) << 8;
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detailed->right_border = timing[0x0f];
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detailed->top_border = timing[0x10];
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detailed->interlaced = get_bit (timing[0x11], 7);
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/* Stereo */
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bits = get_bits (timing[0x11], 5, 6) << 1 | get_bit (timing[0x11], 0);
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detailed->stereo = stereo[bits];
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/* Sync */
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bits = timing[0x11];
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detailed->digital_sync = get_bit (bits, 4);
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if (detailed->digital_sync)
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{
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detailed->connector.digital.composite = !get_bit (bits, 3);
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if (detailed->connector.digital.composite)
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{
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detailed->connector.digital.serrations = get_bit (bits, 2);
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detailed->connector.digital.negative_vsync = FALSE;
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}
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else
|
||||
{
|
||||
detailed->connector.digital.serrations = FALSE;
|
||||
detailed->connector.digital.negative_vsync = !get_bit (bits, 2);
|
||||
}
|
||||
|
||||
detailed->connector.digital.negative_hsync = !get_bit (bits, 0);
|
||||
}
|
||||
else
|
||||
{
|
||||
detailed->connector.analog.bipolar = get_bit (bits, 3);
|
||||
detailed->connector.analog.serrations = get_bit (bits, 2);
|
||||
detailed->connector.analog.sync_on_green = !get_bit (bits, 1);
|
||||
}
|
||||
}
|
||||
|
||||
static int
|
||||
decode_descriptors (const uchar *edid, MonitorInfo *info)
|
||||
{
|
||||
int i;
|
||||
int timing_idx;
|
||||
|
||||
timing_idx = 0;
|
||||
|
||||
for (i = 0; i < 4; ++i)
|
||||
{
|
||||
int index = 0x36 + i * 18;
|
||||
|
||||
if (edid[index + 0] == 0x00 && edid[index + 1] == 0x00)
|
||||
{
|
||||
decode_display_descriptor (edid + index, info);
|
||||
}
|
||||
else
|
||||
{
|
||||
decode_detailed_timing (edid + index, &(info->detailed_timings[timing_idx++]));
|
||||
}
|
||||
}
|
||||
|
||||
info->n_detailed_timings = timing_idx;
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static void
|
||||
decode_check_sum (const uchar *edid,
|
||||
MonitorInfo *info)
|
||||
{
|
||||
int i;
|
||||
uchar check = 0;
|
||||
|
||||
for (i = 0; i < 128; ++i)
|
||||
check += edid[i];
|
||||
|
||||
info->checksum = check;
|
||||
}
|
||||
|
||||
MonitorInfo *
|
||||
decode_edid (const uchar *edid)
|
||||
{
|
||||
MonitorInfo *info = g_new0 (MonitorInfo, 1);
|
||||
|
||||
decode_check_sum (edid, info);
|
||||
|
||||
if (decode_header (edid)
|
||||
&& decode_vendor_and_product_identification (edid, info)
|
||||
&& decode_edid_version (edid, info)
|
||||
&& decode_display_parameters (edid, info)
|
||||
&& decode_color_characteristics (edid, info)
|
||||
&& decode_established_timings (edid, info)
|
||||
&& decode_standard_timings (edid, info)
|
||||
&& decode_descriptors (edid, info))
|
||||
{
|
||||
return info;
|
||||
}
|
||||
else
|
||||
{
|
||||
g_free (info);
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
195
src/core/edid.h
Normal file
195
src/core/edid.h
Normal file
@ -0,0 +1,195 @@
|
||||
/* edid.h
|
||||
*
|
||||
* Copyright 2007, 2008, Red Hat, Inc.
|
||||
*
|
||||
* This file is part of the Gnome Library.
|
||||
*
|
||||
* The Gnome Library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public License as
|
||||
* published by the Free Software Foundation; either version 2 of the
|
||||
* License, or (at your option) any later version.
|
||||
*
|
||||
* The Gnome Library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with the Gnome Library; see the file COPYING.LIB. If not,
|
||||
* write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
||||
* Boston, MA 02110-1301, USA.
|
||||
*
|
||||
* Author: Soren Sandmann <sandmann@redhat.com>
|
||||
*/
|
||||
|
||||
#ifndef EDID_H
|
||||
#define EDID_H
|
||||
|
||||
typedef unsigned char uchar;
|
||||
typedef struct MonitorInfo MonitorInfo;
|
||||
typedef struct Timing Timing;
|
||||
typedef struct DetailedTiming DetailedTiming;
|
||||
|
||||
typedef enum
|
||||
{
|
||||
UNDEFINED,
|
||||
DVI,
|
||||
HDMI_A,
|
||||
HDMI_B,
|
||||
MDDI,
|
||||
DISPLAY_PORT
|
||||
} Interface;
|
||||
|
||||
typedef enum
|
||||
{
|
||||
UNDEFINED_COLOR,
|
||||
MONOCHROME,
|
||||
RGB,
|
||||
OTHER_COLOR
|
||||
} ColorType;
|
||||
|
||||
typedef enum
|
||||
{
|
||||
NO_STEREO,
|
||||
FIELD_RIGHT,
|
||||
FIELD_LEFT,
|
||||
TWO_WAY_RIGHT_ON_EVEN,
|
||||
TWO_WAY_LEFT_ON_EVEN,
|
||||
FOUR_WAY_INTERLEAVED,
|
||||
SIDE_BY_SIDE
|
||||
} StereoType;
|
||||
|
||||
struct Timing
|
||||
{
|
||||
int width;
|
||||
int height;
|
||||
int frequency;
|
||||
};
|
||||
|
||||
struct DetailedTiming
|
||||
{
|
||||
int pixel_clock;
|
||||
int h_addr;
|
||||
int h_blank;
|
||||
int h_sync;
|
||||
int h_front_porch;
|
||||
int v_addr;
|
||||
int v_blank;
|
||||
int v_sync;
|
||||
int v_front_porch;
|
||||
int width_mm;
|
||||
int height_mm;
|
||||
int right_border;
|
||||
int top_border;
|
||||
int interlaced;
|
||||
StereoType stereo;
|
||||
|
||||
int digital_sync;
|
||||
union
|
||||
{
|
||||
struct
|
||||
{
|
||||
int bipolar;
|
||||
int serrations;
|
||||
int sync_on_green;
|
||||
} analog;
|
||||
|
||||
struct
|
||||
{
|
||||
int composite;
|
||||
int serrations;
|
||||
int negative_vsync;
|
||||
int negative_hsync;
|
||||
} digital;
|
||||
} connector;
|
||||
};
|
||||
|
||||
struct MonitorInfo
|
||||
{
|
||||
int checksum;
|
||||
char manufacturer_code[4];
|
||||
int product_code;
|
||||
unsigned int serial_number;
|
||||
|
||||
int production_week; /* -1 if not specified */
|
||||
int production_year; /* -1 if not specified */
|
||||
int model_year; /* -1 if not specified */
|
||||
|
||||
int major_version;
|
||||
int minor_version;
|
||||
|
||||
int is_digital;
|
||||
|
||||
union
|
||||
{
|
||||
struct
|
||||
{
|
||||
int bits_per_primary;
|
||||
Interface interface;
|
||||
int rgb444;
|
||||
int ycrcb444;
|
||||
int ycrcb422;
|
||||
} digital;
|
||||
|
||||
struct
|
||||
{
|
||||
double video_signal_level;
|
||||
double sync_signal_level;
|
||||
double total_signal_level;
|
||||
|
||||
int blank_to_black;
|
||||
|
||||
int separate_hv_sync;
|
||||
int composite_sync_on_h;
|
||||
int composite_sync_on_green;
|
||||
int serration_on_vsync;
|
||||
ColorType color_type;
|
||||
} analog;
|
||||
} connector;
|
||||
|
||||
int width_mm; /* -1 if not specified */
|
||||
int height_mm; /* -1 if not specified */
|
||||
double aspect_ratio; /* -1.0 if not specififed */
|
||||
|
||||
double gamma; /* -1.0 if not specified */
|
||||
|
||||
int standby;
|
||||
int suspend;
|
||||
int active_off;
|
||||
|
||||
int srgb_is_standard;
|
||||
int preferred_timing_includes_native;
|
||||
int continuous_frequency;
|
||||
|
||||
double red_x;
|
||||
double red_y;
|
||||
double green_x;
|
||||
double green_y;
|
||||
double blue_x;
|
||||
double blue_y;
|
||||
double white_x;
|
||||
double white_y;
|
||||
|
||||
Timing established[24]; /* Terminated by 0x0x0 */
|
||||
Timing standard[8];
|
||||
|
||||
int n_detailed_timings;
|
||||
DetailedTiming detailed_timings[4]; /* If monitor has a preferred
|
||||
* mode, it is the first one
|
||||
* (whether it has, is
|
||||
* determined by the
|
||||
* preferred_timing_includes
|
||||
* bit.
|
||||
*/
|
||||
|
||||
/* Optional product description */
|
||||
char dsc_serial_number[14];
|
||||
char dsc_product_name[14];
|
||||
char dsc_string[14]; /* Unspecified ASCII data */
|
||||
};
|
||||
|
||||
MonitorInfo *decode_edid (const uchar *data);
|
||||
char *make_display_name (const MonitorInfo *info);
|
||||
char *make_display_size_string (int width_mm, int height_mm);
|
||||
|
||||
#endif
|
||||
@ -40,6 +40,8 @@
|
||||
#include <meta/errors.h>
|
||||
#include "monitor-private.h"
|
||||
|
||||
#include "edid.h"
|
||||
|
||||
#define ALL_WL_TRANSFORMS ((1 << (WL_OUTPUT_TRANSFORM_FLIPPED_270 + 1)) - 1)
|
||||
|
||||
struct _MetaMonitorManagerXrandr
|
||||
@ -236,6 +238,74 @@ compare_outputs (const void *one,
|
||||
return strcmp (o_one->name, o_two->name);
|
||||
}
|
||||
|
||||
static guint8 *
|
||||
get_edid_property (Display *dpy,
|
||||
RROutput output,
|
||||
Atom atom,
|
||||
gsize *len)
|
||||
{
|
||||
unsigned char *prop;
|
||||
int actual_format;
|
||||
unsigned long nitems, bytes_after;
|
||||
Atom actual_type;
|
||||
guint8 *result;
|
||||
|
||||
XRRGetOutputProperty (dpy, output, atom,
|
||||
0, 100, False, False,
|
||||
AnyPropertyType,
|
||||
&actual_type, &actual_format,
|
||||
&nitems, &bytes_after, &prop);
|
||||
|
||||
if (actual_type == XA_INTEGER && actual_format == 8)
|
||||
{
|
||||
result = g_memdup (prop, nitems);
|
||||
if (len)
|
||||
*len = nitems;
|
||||
}
|
||||
else
|
||||
{
|
||||
result = NULL;
|
||||
}
|
||||
|
||||
XFree (prop);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
static GBytes *
|
||||
read_output_edid (MetaMonitorManagerXrandr *manager_xrandr,
|
||||
XID output_id)
|
||||
{
|
||||
Atom edid_atom;
|
||||
guint8 *result;
|
||||
gsize len;
|
||||
|
||||
edid_atom = XInternAtom (manager_xrandr->xdisplay, "EDID", FALSE);
|
||||
result = get_edid_property (manager_xrandr->xdisplay, output_id, edid_atom, &len);
|
||||
|
||||
if (!result)
|
||||
{
|
||||
edid_atom = XInternAtom (manager_xrandr->xdisplay, "EDID_DATA", FALSE);
|
||||
result = get_edid_property (manager_xrandr->xdisplay, output_id, edid_atom, &len);
|
||||
}
|
||||
|
||||
if (!result)
|
||||
{
|
||||
edid_atom = XInternAtom (manager_xrandr->xdisplay, "XFree86_DDC_EDID1_RAWDATA", FALSE);
|
||||
result = get_edid_property (manager_xrandr->xdisplay, output_id, edid_atom, &len);
|
||||
}
|
||||
|
||||
if (result)
|
||||
{
|
||||
if (len > 0 && len % 128 == 0)
|
||||
return g_bytes_new_take (result, len);
|
||||
else
|
||||
g_free (result);
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static void
|
||||
meta_monitor_manager_xrandr_read_current (MetaMonitorManager *manager)
|
||||
{
|
||||
@ -365,11 +435,36 @@ meta_monitor_manager_xrandr_read_current (MetaMonitorManager *manager)
|
||||
|
||||
if (output->connection != RR_Disconnected)
|
||||
{
|
||||
GBytes *edid;
|
||||
MonitorInfo *parsed_edid;
|
||||
|
||||
meta_output->output_id = resources->outputs[i];
|
||||
meta_output->name = g_strdup (output->name);
|
||||
meta_output->vendor = g_strdup ("unknown");
|
||||
meta_output->product = g_strdup ("unknown");
|
||||
meta_output->serial = g_strdup ("");
|
||||
|
||||
edid = read_output_edid (manager_xrandr, meta_output->output_id);
|
||||
if (edid)
|
||||
{
|
||||
gsize len;
|
||||
|
||||
parsed_edid = decode_edid (g_bytes_get_data (edid, &len));
|
||||
if (parsed_edid)
|
||||
{
|
||||
meta_output->vendor = g_strndup (parsed_edid->manufacturer_code, 4);
|
||||
meta_output->product = g_strndup (parsed_edid->dsc_product_name, 14);
|
||||
meta_output->serial = g_strndup (parsed_edid->dsc_serial_number, 14);
|
||||
|
||||
g_free (parsed_edid);
|
||||
}
|
||||
|
||||
g_bytes_unref (edid);
|
||||
}
|
||||
|
||||
if (!meta_output->vendor)
|
||||
{
|
||||
meta_output->vendor = g_strdup ("unknown");
|
||||
meta_output->product = g_strdup ("unknown");
|
||||
meta_output->serial = g_strdup ("unknown");
|
||||
}
|
||||
meta_output->width_mm = output->mm_width;
|
||||
meta_output->height_mm = output->mm_height;
|
||||
meta_output->subpixel_order = COGL_SUBPIXEL_ORDER_UNKNOWN;
|
||||
@ -467,73 +562,13 @@ meta_monitor_manager_xrandr_read_current (MetaMonitorManager *manager)
|
||||
}
|
||||
}
|
||||
|
||||
static guint8 *
|
||||
get_edid_property (Display *dpy,
|
||||
RROutput output,
|
||||
Atom atom,
|
||||
gsize *len)
|
||||
{
|
||||
unsigned char *prop;
|
||||
int actual_format;
|
||||
unsigned long nitems, bytes_after;
|
||||
Atom actual_type;
|
||||
guint8 *result;
|
||||
|
||||
XRRGetOutputProperty (dpy, output, atom,
|
||||
0, 100, False, False,
|
||||
AnyPropertyType,
|
||||
&actual_type, &actual_format,
|
||||
&nitems, &bytes_after, &prop);
|
||||
|
||||
if (actual_type == XA_INTEGER && actual_format == 8)
|
||||
{
|
||||
result = g_memdup (prop, nitems);
|
||||
if (len)
|
||||
*len = nitems;
|
||||
}
|
||||
else
|
||||
{
|
||||
result = NULL;
|
||||
}
|
||||
|
||||
XFree (prop);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
static GBytes *
|
||||
meta_monitor_manager_xrandr_read_edid (MetaMonitorManager *manager,
|
||||
MetaOutput *output)
|
||||
{
|
||||
MetaMonitorManagerXrandr *manager_xrandr = META_MONITOR_MANAGER_XRANDR (manager);
|
||||
Atom edid_atom;
|
||||
guint8 *result;
|
||||
gsize len;
|
||||
|
||||
edid_atom = XInternAtom (manager_xrandr->xdisplay, "EDID", FALSE);
|
||||
result = get_edid_property (manager_xrandr->xdisplay, output->output_id, edid_atom, &len);
|
||||
|
||||
if (!result)
|
||||
{
|
||||
edid_atom = XInternAtom (manager_xrandr->xdisplay, "EDID_DATA", FALSE);
|
||||
result = get_edid_property (manager_xrandr->xdisplay, output->output_id, edid_atom, &len);
|
||||
}
|
||||
|
||||
if (!result)
|
||||
{
|
||||
edid_atom = XInternAtom (manager_xrandr->xdisplay, "XFree86_DDC_EDID1_RAWDATA", FALSE);
|
||||
result = get_edid_property (manager_xrandr->xdisplay, output->output_id, edid_atom, &len);
|
||||
}
|
||||
|
||||
if (result)
|
||||
{
|
||||
if (len > 0 && len % 128 == 0)
|
||||
return g_bytes_new_take (result, len);
|
||||
else
|
||||
g_free (result);
|
||||
}
|
||||
|
||||
return NULL;
|
||||
return read_output_edid (manager_xrandr, output->output_id);
|
||||
}
|
||||
|
||||
static void
|
||||
|
||||
Loading…
Reference in New Issue
Block a user