1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2001-2002 NaN Holding BV. All rights reserved. */
/** \file
* \ingroup GHOST
*/
/**
* Copyright (C) 2001 NaN Technologies B.V.
*/
#include "GHOST_DisplayManager.h"
#include "GHOST_Debug.h"
GHOST_DisplayManager::GHOST_DisplayManager() : m_settingsInitialized(false)
{
}
GHOST_DisplayManager::~GHOST_DisplayManager()
{
}
GHOST_TSuccess GHOST_DisplayManager::initialize()
{
GHOST_TSuccess success;
if (!m_settingsInitialized) {
success = initializeSettings();
m_settingsInitialized = true;
}
else {
success = GHOST_kSuccess;
}
return success;
}
GHOST_TSuccess GHOST_DisplayManager::getNumDisplays(uint8_t & /*numDisplays*/) const
{
/* Don't know if we have a display. */
return GHOST_kFailure;
}
GHOST_TSuccess GHOST_DisplayManager::getNumDisplaySettings(uint8_t display,
int32_t &numSettings) const
{
GHOST_TSuccess success;
GHOST_ASSERT(m_settingsInitialized,
"GHOST_DisplayManager::getNumDisplaySettings(): m_settingsInitialized=false");
uint8_t numDisplays;
success = getNumDisplays(numDisplays);
if (success == GHOST_kSuccess) {
if (display < numDisplays) {
numSettings = m_settings[display].size();
}
else {
success = GHOST_kFailure;
}
}
return success;
}
GHOST_TSuccess GHOST_DisplayManager::getDisplaySetting(uint8_t display,
int32_t index,
GHOST_DisplaySetting &setting) const
{
GHOST_TSuccess success;
GHOST_ASSERT(m_settingsInitialized,
"GHOST_DisplayManager::getNumDisplaySettings(): m_settingsInitialized=false");
uint8_t numDisplays;
success = getNumDisplays(numDisplays);
if (success == GHOST_kSuccess) {
if (display < numDisplays && ((uint8_t)index < m_settings[display].size())) {
setting = m_settings[display][index];
}
else {
success = GHOST_kFailure;
}
}
return success;
}
GHOST_TSuccess GHOST_DisplayManager::getCurrentDisplaySetting(
uint8_t /*display*/, GHOST_DisplaySetting & /*setting*/) const
{
return GHOST_kFailure;
}
GHOST_TSuccess GHOST_DisplayManager::setCurrentDisplaySetting(
uint8_t /*display*/, const GHOST_DisplaySetting & /*setting*/)
{
return GHOST_kFailure;
}
GHOST_TSuccess GHOST_DisplayManager::findMatch(uint8_t display,
const GHOST_DisplaySetting &setting,
GHOST_DisplaySetting &match) const
{
GHOST_TSuccess success = GHOST_kSuccess;
GHOST_ASSERT(m_settingsInitialized,
"GHOST_DisplayManager::findMatch(): m_settingsInitialized=false");
int criteria[4] = {
(int)setting.xPixels, (int)setting.yPixels, (int)setting.bpp, (int)setting.frequency};
int capabilities[4];
double field, score;
double best = 1e12; /* A big number. */
int found = 0;
/* Look at all the display modes. */
for (int i = 0; (i < (int)m_settings[display].size()); i++) {
/* Store the capabilities of the display device. */
capabilities[0] = m_settings[display][i].xPixels;
capabilities[1] = m_settings[display][i].yPixels;
capabilities[2] = m_settings[display][i].bpp;
capabilities[3] = m_settings[display][i].frequency;
/* Match against all the fields of the display settings. */
score = 0;
for (int j = 0; j < 4; j++) {
field = capabilities[j] - criteria[j];
score += field * field;
}
if (score < best) {
found = i;
best = score;
}
}
match = m_settings[display][found];
GHOST_PRINT("GHOST_DisplayManager::findMatch(): settings of match:\n");
GHOST_PRINT(" setting.xPixels=" << match.xPixels << "\n");
GHOST_PRINT(" setting.yPixels=" << match.yPixels << "\n");
GHOST_PRINT(" setting.bpp=" << match.bpp << "\n");
GHOST_PRINT(" setting.frequency=" << match.frequency << "\n");
return success;
}
GHOST_TSuccess GHOST_DisplayManager::initializeSettings()
{
uint8_t numDisplays;
GHOST_TSuccess success = getNumDisplays(numDisplays);
if (success == GHOST_kSuccess) {
for (uint8_t display = 0; (display < numDisplays) && (success == GHOST_kSuccess); display++) {
GHOST_DisplaySettings displaySettings;
m_settings.push_back(displaySettings);
int32_t numSettings;
success = getNumDisplaySettings(display, numSettings);
if (success == GHOST_kSuccess) {
int32_t index;
GHOST_DisplaySetting setting;
for (index = 0; (index < numSettings) && (success == GHOST_kSuccess); index++) {
success = getDisplaySetting(display, index, setting);
m_settings[display].push_back(setting);
}
}
else {
break;
}
}
}
return success;
}
|
