| 1 | /** @file
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| 2 | *
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| 3 | * VBoxControl - Guest Additions Utility
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| 4 | *
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| 5 | * Copyright (C) 2006-2007 innotek GmbH
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| 6 | *
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| 7 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 8 | * available from http://www.virtualbox.org. This file is free software;
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| 9 | * you can redistribute it and/or modify it under the terms of the GNU
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| 10 | * General Public License as published by the Free Software Foundation,
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| 11 | * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
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| 12 | * distribution. VirtualBox OSE is distributed in the hope that it will
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| 13 | * be useful, but WITHOUT ANY WARRANTY of any kind.
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| 14 | */
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| 15 |
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| 16 | #include <windows.h>
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| 17 | #include <stdio.h>
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| 18 |
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| 19 | void printHelp()
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| 20 | {
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| 21 | printf("VBoxControl getvideoacceleration\n"
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| 22 | "\n"
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| 23 | "VBoxControl setvideoacceleration <on|off>\n"
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| 24 | "\n"
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| 25 | "VBoxControl listcustommodes\n"
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| 26 | "\n"
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| 27 | "VBoxControl addcustommode <width> <height> <bpp>\n"
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| 28 | "\n"
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| 29 | "VBoxControl removecustommode <width> <height> <bpp>\n");
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| 30 | }
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| 31 |
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| 32 |
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| 33 | HKEY getVideoKey(bool writable)
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| 34 | {
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| 35 | HKEY hkeyDeviceMap = 0;
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| 36 | HKEY hkeyVideo = 0;
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| 37 | LONG status;
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| 38 |
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| 39 | status = RegOpenKeyExA(HKEY_LOCAL_MACHINE, "HARDWARE\\DEVICEMAP\\VIDEO", 0, KEY_READ, &hkeyDeviceMap);
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| 40 | if ((status != ERROR_SUCCESS) || !hkeyDeviceMap)
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| 41 | {
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| 42 | printf("Error opening video device map registry key!\n");
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| 43 | return 0;
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| 44 | }
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| 45 | char szVideoLocation[256];
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| 46 | DWORD dwKeyType;
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| 47 | szVideoLocation[0] = 0;
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| 48 | DWORD len = sizeof(szVideoLocation);
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| 49 | status = RegQueryValueExA(hkeyDeviceMap, "\\Device\\Video0", NULL, &dwKeyType, (LPBYTE)szVideoLocation, &len);
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| 50 | /*
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| 51 | * This value will start with a weird value: \REGISTRY\Machine
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| 52 | * Make sure this is true.
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| 53 | */
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| 54 | if ( (status == ERROR_SUCCESS)
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| 55 | && (dwKeyType == REG_SZ)
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| 56 | && (_strnicmp(szVideoLocation, "\\REGISTRY\\Machine", 17) == 0))
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| 57 | {
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| 58 | /* open that branch */
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| 59 | status = RegOpenKeyExA(HKEY_LOCAL_MACHINE, &szVideoLocation[18], 0, KEY_READ | (writable ? KEY_WRITE : 0), &hkeyVideo);
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| 60 | }
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| 61 | else
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| 62 | {
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| 63 | printf("Error opening registry key '%s'\n", &szVideoLocation[18]);
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| 64 | }
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| 65 | RegCloseKey(hkeyDeviceMap);
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| 66 | return hkeyVideo;
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| 67 | }
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| 68 |
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| 69 | void handleGetVideoAcceleration(int argc, char *argv[])
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| 70 | {
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| 71 | ULONG status;
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| 72 | HKEY hkeyVideo = getVideoKey(false);
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| 73 |
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| 74 | if (hkeyVideo)
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| 75 | {
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| 76 | /* query the actual value */
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| 77 | DWORD fAcceleration = 1;
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| 78 | DWORD len = sizeof(fAcceleration);
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| 79 | DWORD dwKeyType;
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| 80 | status = RegQueryValueExA(hkeyVideo, "EnableVideoAccel", NULL, &dwKeyType, (LPBYTE)&fAcceleration, &len);
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| 81 | if (status != ERROR_SUCCESS)
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| 82 | printf("Video acceleration: default\n");
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| 83 | else
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| 84 | printf("Video acceleration: %s\n", fAcceleration ? "on" : "off");
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| 85 | RegCloseKey(hkeyVideo);
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| 86 | }
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| 87 | }
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| 88 |
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| 89 | void handleSetVideoAcceleration(int argc, char *argv[])
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| 90 | {
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| 91 | ULONG status;
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| 92 | HKEY hkeyVideo;
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| 93 |
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| 94 | /* must have exactly one argument: the new offset */
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| 95 | if ( (argc != 1)
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| 96 | || ( strcmp(argv[0], "on")
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| 97 | && strcmp(argv[0], "off")))
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| 98 | {
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| 99 | printf("Error: invalid video acceleration status!\n");
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| 100 | return;
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| 101 | }
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| 102 |
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| 103 | hkeyVideo = getVideoKey(true);
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| 104 |
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| 105 | if (hkeyVideo)
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| 106 | {
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| 107 | int fAccel = 0;
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| 108 | if (!strcmp(argv[0], "on"))
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| 109 | fAccel = 1;
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| 110 | /* set a new value */
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| 111 | status = RegSetValueExA(hkeyVideo, "EnableVideoAccel", 0, REG_DWORD, (LPBYTE)&fAccel, sizeof(fAccel));
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| 112 | if (status != ERROR_SUCCESS)
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| 113 | {
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| 114 | printf("Error %d writing video acceleration status!\n", status);
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| 115 | }
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| 116 | RegCloseKey(hkeyVideo);
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| 117 | }
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| 118 | }
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| 119 |
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| 120 | #define MAX_CUSTOM_MODES 128
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| 121 |
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| 122 | /* the table of custom modes */
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| 123 | struct
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| 124 | {
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| 125 | DWORD xres;
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| 126 | DWORD yres;
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| 127 | DWORD bpp;
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| 128 | } customModes[MAX_CUSTOM_MODES] = {0};
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| 129 |
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| 130 | void getCustomModes(HKEY hkeyVideo)
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| 131 | {
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| 132 | ULONG status;
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| 133 | int curMode = 0;
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| 134 |
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| 135 | /* null out the table */
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| 136 | memset(customModes, 0, sizeof(customModes));
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| 137 |
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| 138 | do
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| 139 | {
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| 140 | char valueName[20];
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| 141 | DWORD xres, yres, bpp = 0;
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| 142 | DWORD dwType;
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| 143 | DWORD dwLen = sizeof(DWORD);
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| 144 |
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| 145 | sprintf(valueName, "CustomMode%dWidth", curMode);
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| 146 | status = RegQueryValueExA(hkeyVideo, valueName, NULL, &dwType, (LPBYTE)&xres, &dwLen);
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| 147 | if (status != ERROR_SUCCESS)
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| 148 | break;
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| 149 | sprintf(valueName, "CustomMode%dHeight", curMode);
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| 150 | status = RegQueryValueExA(hkeyVideo, valueName, NULL, &dwType, (LPBYTE)&yres, &dwLen);
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| 151 | if (status != ERROR_SUCCESS)
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| 152 | break;
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| 153 | sprintf(valueName, "CustomMode%dBPP", curMode);
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| 154 | status = RegQueryValueExA(hkeyVideo, valueName, NULL, &dwType, (LPBYTE)&bpp, &dwLen);
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| 155 | if (status != ERROR_SUCCESS)
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| 156 | break;
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| 157 |
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| 158 | /* check if the mode is OK */
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| 159 | if ( (xres > (1 << 16))
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| 160 | && (yres > (1 << 16))
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| 161 | && ( (bpp != 16)
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| 162 | || (bpp != 24)
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| 163 | || (bpp != 32)))
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| 164 | break;
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| 165 |
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| 166 | /* add mode to table */
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| 167 | customModes[curMode].xres = xres;
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| 168 | customModes[curMode].yres = yres;
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| 169 | customModes[curMode].bpp = bpp;
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| 170 |
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| 171 | ++curMode;
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| 172 |
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| 173 | if (curMode >= MAX_CUSTOM_MODES)
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| 174 | break;
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| 175 | } while(1);
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| 176 | }
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| 177 |
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| 178 | void writeCustomModes(HKEY hkeyVideo)
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| 179 | {
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| 180 | ULONG status;
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| 181 | int tableIndex = 0;
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| 182 | int modeIndex = 0;
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| 183 |
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| 184 | /* first remove all values */
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| 185 | for (int i = 0; i < MAX_CUSTOM_MODES; i++)
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| 186 | {
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| 187 | char valueName[20];
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| 188 | sprintf(valueName, "CustomMode%dWidth", i);
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| 189 | RegDeleteValueA(hkeyVideo, valueName);
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| 190 | sprintf(valueName, "CustomMode%dHeight", i);
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| 191 | RegDeleteValueA(hkeyVideo, valueName);
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| 192 | sprintf(valueName, "CustomMode%dBPP", i);
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| 193 | RegDeleteValueA(hkeyVideo, valueName);
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| 194 | }
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| 195 |
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| 196 | do
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| 197 | {
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| 198 | if (tableIndex >= MAX_CUSTOM_MODES)
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| 199 | break;
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| 200 |
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| 201 | /* is the table entry present? */
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| 202 | if ( (!customModes[tableIndex].xres)
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| 203 | || (!customModes[tableIndex].yres)
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| 204 | || (!customModes[tableIndex].bpp))
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| 205 | {
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| 206 | tableIndex++;
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| 207 | continue;
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| 208 | }
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| 209 |
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| 210 | printf("writing mode %d (%dx%dx%d)\n", modeIndex, customModes[tableIndex].xres, customModes[tableIndex].yres, customModes[tableIndex].bpp);
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| 211 | char valueName[20];
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| 212 | sprintf(valueName, "CustomMode%dWidth", modeIndex);
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| 213 | status = RegSetValueExA(hkeyVideo, valueName, 0, REG_DWORD, (LPBYTE)&customModes[tableIndex].xres,
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| 214 | sizeof(customModes[tableIndex].xres));
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| 215 | sprintf(valueName, "CustomMode%dHeight", modeIndex);
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| 216 | RegSetValueExA(hkeyVideo, valueName, 0, REG_DWORD, (LPBYTE)&customModes[tableIndex].yres,
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| 217 | sizeof(customModes[tableIndex].yres));
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| 218 | sprintf(valueName, "CustomMode%dBPP", modeIndex);
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| 219 | RegSetValueExA(hkeyVideo, valueName, 0, REG_DWORD, (LPBYTE)&customModes[tableIndex].bpp,
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| 220 | sizeof(customModes[tableIndex].bpp));
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| 221 |
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| 222 | modeIndex++;
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| 223 | tableIndex++;
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| 224 |
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| 225 | } while(1);
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| 226 |
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| 227 | }
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| 228 |
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| 229 | void handleListCustomModes(int argc, char *argv[])
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| 230 | {
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| 231 | if (argc != 0)
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| 232 | {
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| 233 | printf("Error: too many parameters!");
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| 234 | return;
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| 235 | }
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| 236 |
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| 237 | HKEY hkeyVideo = getVideoKey(false);
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| 238 |
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| 239 | if (hkeyVideo)
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| 240 | {
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| 241 | getCustomModes(hkeyVideo);
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| 242 | for (int i = 0; i < (sizeof(customModes) / sizeof(customModes[0])); i++)
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| 243 | {
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| 244 | if ( !customModes[i].xres
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| 245 | || !customModes[i].yres
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| 246 | || !customModes[i].bpp)
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| 247 | continue;
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| 248 |
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| 249 | printf("Mode: %d x %d x %d\n",
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| 250 | customModes[i].xres, customModes[i].yres, customModes[i].bpp);
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| 251 | }
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| 252 | RegCloseKey(hkeyVideo);
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| 253 | }
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| 254 | }
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| 255 |
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| 256 | void handleAddCustomMode(int argc, char *argv[])
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| 257 | {
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| 258 | if (argc != 3)
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| 259 | {
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| 260 | printf("Error: not enough parameters!\n");
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| 261 | return;
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| 262 | }
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| 263 |
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| 264 | DWORD xres = atoi(argv[0]);
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| 265 | DWORD yres = atoi(argv[1]);
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| 266 | DWORD bpp = atoi(argv[2]);
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| 267 |
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| 268 | /** @todo better check including xres mod 8 = 0! */
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| 269 | if ( (xres > (1 << 16))
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| 270 | && (yres > (1 << 16))
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| 271 | && ( (bpp != 16)
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| 272 | || (bpp != 24)
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| 273 | || (bpp != 32)))
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| 274 | {
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| 275 | printf("Error: invalid mode specified!\n");
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| 276 | return;
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| 277 | }
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| 278 |
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| 279 | HKEY hkeyVideo = getVideoKey(true);
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| 280 |
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| 281 | if (hkeyVideo)
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| 282 | {
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| 283 | getCustomModes(hkeyVideo);
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| 284 | for (int i = 0; i < MAX_CUSTOM_MODES; i++)
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| 285 | {
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| 286 | /* item free? */
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| 287 | if (!customModes[i].xres)
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| 288 | {
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| 289 | customModes[i].xres = xres;
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| 290 | customModes[i].yres = yres;
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| 291 | customModes[i].bpp = bpp;
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| 292 | break;
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| 293 | }
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| 294 | }
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| 295 | writeCustomModes(hkeyVideo);
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| 296 | RegCloseKey(hkeyVideo);
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| 297 | }
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| 298 | }
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| 299 |
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| 300 | void handleRemoveCustomMode(int argc, char *argv[])
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| 301 | {
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| 302 | if (argc != 3)
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| 303 | {
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| 304 | printf("Error: not enough parameters!\n");
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| 305 | return;
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| 306 | }
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| 307 |
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| 308 | DWORD xres = atoi(argv[0]);
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| 309 | DWORD yres = atoi(argv[1]);
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| 310 | DWORD bpp = atoi(argv[2]);
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| 311 |
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| 312 | HKEY hkeyVideo = getVideoKey(true);
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| 313 |
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| 314 | if (hkeyVideo)
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| 315 | {
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| 316 | getCustomModes(hkeyVideo);
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| 317 | for (int i = 0; i < MAX_CUSTOM_MODES; i++)
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| 318 | {
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| 319 | /* correct item? */
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| 320 | if ( (customModes[i].xres == xres)
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| 321 | && (customModes[i].yres == yres)
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| 322 | && (customModes[i].bpp == bpp))
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| 323 | {
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| 324 | printf("found mode at index %d\n", i);
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| 325 | memset(&customModes[i], 0, sizeof(customModes[i]));
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| 326 | break;
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| 327 | }
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| 328 | }
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| 329 | writeCustomModes(hkeyVideo);
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| 330 | RegCloseKey(hkeyVideo);
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| 331 | }
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| 332 | }
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| 333 |
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| 334 |
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| 335 | /**
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| 336 | * Main function
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| 337 | */
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| 338 | int main(int argc, char *argv[])
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| 339 | {
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| 340 | if (argc < 2)
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| 341 | {
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| 342 | printHelp();
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| 343 | return 1;
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| 344 | }
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| 345 |
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| 346 | /* determine which command */
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| 347 | if (strcmp(argv[1], "getvideoacceleration") == 0)
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| 348 | {
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| 349 | handleGetVideoAcceleration(argc - 2, &argv[2]);
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| 350 | }
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| 351 | else if (strcmp(argv[1], "setvideoacceleration") == 0)
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| 352 | {
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| 353 | handleSetVideoAcceleration(argc - 2, &argv[2]);
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| 354 | }
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| 355 | else if (strcmp(argv[1], "listcustommodes") == 0)
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| 356 | {
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| 357 | handleListCustomModes(argc - 2, &argv[2]);
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| 358 | }
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| 359 | else if (strcmp(argv[1], "addcustommode") == 0)
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| 360 | {
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| 361 | handleAddCustomMode(argc - 2, &argv[2]);
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| 362 | }
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| 363 | else if (strcmp(argv[1], "removecustommode") == 0)
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| 364 | {
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| 365 | handleRemoveCustomMode(argc - 2, &argv[2]);
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| 366 | }
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| 367 | else
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| 368 | {
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| 369 | printHelp();
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| 370 | return 1;
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| 371 | }
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| 372 |
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| 373 | return 0;
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| 374 | }
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