455 lines
14 KiB
C
455 lines
14 KiB
C
/*
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* Copyright (c) 2002-2004 LWJGL Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of 'LWJGL' nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* $Id$
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*
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* Win32 specific library for display handling.
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*
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* @author cix_foo <cix_foo@users.sourceforge.net>
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* @version $Revision$
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*/
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#include <windows.h>
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#include <jni.h>
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#include "display.h"
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#include "common_tools.h"
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#define WINDOWCLASSNAME "LWJGLWINDOW"
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#define GAMMA_SIZE (3*256)
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static jobjectArray GetAvailableDisplayModesEx(JNIEnv * env);
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static jobjectArray GetAvailableDisplayModes(JNIEnv * env);
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static char * getDriver();
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static bool modeSet = false; // Whether we've done a display mode change
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static WORD originalGamma[GAMMA_SIZE]; // Original gamma settings
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static WORD currentGamma[GAMMA_SIZE]; // Current gamma settings
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static DEVMODE devmode; // Now we'll remember this value for the future
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extern HWND display_hwnd; // Handle to the window
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extern RECT clientSize;
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jobjectArray getAvailableDisplayModes(JNIEnv *env)
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{
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jobjectArray result = GetAvailableDisplayModesEx(env);
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if (result == NULL) {
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printfDebug("Extended display mode selection failed, using fallback\n");
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result = GetAvailableDisplayModes(env);
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}
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return result;
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}
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/**
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* Choose displaymodes using extended codepath (multiple displaydevices)
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*/
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static jobjectArray GetAvailableDisplayModesEx(JNIEnv * env) {
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typedef BOOL (WINAPI * EnumDisplayDevicesAPROC)(IN LPCSTR lpDevice, IN DWORD iDevNum, OUT PDISPLAY_DEVICEA lpDisplayDevice, IN DWORD dwFlags);
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typedef BOOL (WINAPI * EnumDisplaySettingsExAPROC)(IN LPCSTR lpszDeviceName, IN DWORD iModeNum, OUT LPDEVMODEA lpDevMode, IN DWORD dwFlags);
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EnumDisplayDevicesAPROC EnumDisplayDevicesA;
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EnumDisplaySettingsExAPROC EnumDisplaySettingsExA;
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HMODULE lib_handle = LoadLibrary("user32.dll");
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int i = 0, j = 0, n = 0;
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DISPLAY_DEVICE DisplayDevice;
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DEVMODE DevMode;
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jobject *display_mode_objects = NULL;
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int list_size = 0;
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jclass displayModeClass;
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jobjectArray ret;
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jmethodID displayModeConstructor;
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if (lib_handle == NULL) {
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printfDebug("Could not load user32.dll\n");
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return NULL;
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}
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EnumDisplayDevicesA = (EnumDisplayDevicesAPROC)GetProcAddress(lib_handle, "EnumDisplayDevicesA");
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if (EnumDisplayDevicesA == NULL)
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return NULL;
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EnumDisplaySettingsExA = (EnumDisplaySettingsExAPROC)GetProcAddress(lib_handle, "EnumDisplaySettingsExA");
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if (EnumDisplaySettingsExA == NULL)
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return NULL;
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ZeroMemory(&DevMode, sizeof(DEVMODE));
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ZeroMemory(&DisplayDevice, sizeof(DISPLAY_DEVICE));
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DevMode.dmSize = sizeof(DEVMODE);
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DisplayDevice.cb = sizeof(DISPLAY_DEVICE);
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displayModeClass = (*env)->FindClass(env, "org/lwjgl/opengl/DisplayMode");
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displayModeConstructor = (*env)->GetMethodID(env, displayModeClass, "<init>", "(IIII)V");
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while(EnumDisplayDevicesA(NULL, i++, &DisplayDevice, 0) != 0) {
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// continue if mirroring device
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if((DisplayDevice.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER) != 0) {
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continue;
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}
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j = 0;
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while(EnumDisplaySettingsExA((const char *) DisplayDevice.DeviceName, j++, &DevMode, 0) != 0) {
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// Filter out indexed modes
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if (DevMode.dmBitsPerPel > 8 && ChangeDisplaySettings(&DevMode, CDS_FULLSCREEN | CDS_TEST) == DISP_CHANGE_SUCCESSFUL) {
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jobject displayMode;
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if (list_size <= n) {
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list_size += 1;
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display_mode_objects = (jobject *)realloc(display_mode_objects, sizeof(jobject)*list_size);
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if (display_mode_objects == NULL)
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return NULL;
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}
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displayMode = (*env)->NewObject(env, displayModeClass, displayModeConstructor,
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DevMode.dmPelsWidth, DevMode.dmPelsHeight,
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DevMode.dmBitsPerPel, DevMode.dmDisplayFrequency);
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display_mode_objects[n++] = displayMode;
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}
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}
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}
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printfDebug("Found %d displaymodes\n", n);
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ret = (*env)->NewObjectArray(env, n, displayModeClass, NULL);
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for (i = 0; i < n; i++) {
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(*env)->SetObjectArrayElement(env, ret, i, display_mode_objects[i]);
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}
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free(display_mode_objects);
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FreeLibrary(lib_handle);
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return ret;
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}
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/**
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* Choose displaymodes using standard codepath (single displaydevice)
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*/
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static jobjectArray GetAvailableDisplayModes(JNIEnv * env) {
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int i = 0, j = 0, n = 0;
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DEVMODE DevMode;
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jclass displayModeClass;
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jobjectArray ret;
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jmethodID displayModeConstructor;
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jobject *display_mode_objects = NULL;
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int list_size = 0;
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ZeroMemory(&DevMode, sizeof(DEVMODE));
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DevMode.dmSize = sizeof(DEVMODE);
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displayModeClass = (*env)->FindClass(env, "org/lwjgl/opengl/DisplayMode");
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displayModeConstructor = (*env)->GetMethodID(env, displayModeClass, "<init>", "(IIII)V");
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while(EnumDisplaySettings(NULL, j++, &DevMode) != 0) {
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// Filter out indexed modes
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if (DevMode.dmBitsPerPel > 8 && ChangeDisplaySettings(&DevMode, CDS_FULLSCREEN | CDS_TEST) == DISP_CHANGE_SUCCESSFUL) {
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jobject displayMode;
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if (list_size <= n) {
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list_size += 1;
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display_mode_objects = (jobject *)realloc(display_mode_objects, sizeof(jobject)*list_size);
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if (display_mode_objects == NULL)
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return NULL;
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}
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displayMode = (*env)->NewObject(env, displayModeClass, displayModeConstructor,
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DevMode.dmPelsWidth, DevMode.dmPelsHeight,
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DevMode.dmBitsPerPel, DevMode.dmDisplayFrequency);
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display_mode_objects[n++] = displayMode;
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}
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}
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ret = (*env)->NewObjectArray(env, n, displayModeClass, NULL);
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for (i = 0; i < n; i++) {
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(*env)->SetObjectArrayElement(env, ret, i, display_mode_objects[i]);
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}
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free(display_mode_objects);
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printfDebug("Found %d displaymodes\n", n);
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return ret;
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}
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void switchDisplayMode(JNIEnv * env, jobject mode)
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{
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jclass cls_displayMode = (*env)->GetObjectClass(env, mode);
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jfieldID fid_width = (*env)->GetFieldID(env, cls_displayMode, "width", "I");
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jfieldID fid_height = (*env)->GetFieldID(env, cls_displayMode, "height", "I");
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jfieldID fid_bpp = (*env)->GetFieldID(env, cls_displayMode, "bpp", "I");
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jfieldID fid_freq = (*env)->GetFieldID(env, cls_displayMode, "freq", "I");
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int width = (*env)->GetIntField(env, mode, fid_width);
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int height = (*env)->GetIntField(env, mode, fid_height);
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int bpp = (*env)->GetIntField(env, mode, fid_bpp);
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int freq = (*env)->GetIntField(env, mode, fid_freq);
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LONG cdsret;
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devmode.dmSize = sizeof(DEVMODE);
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devmode.dmBitsPerPel = bpp;
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devmode.dmPelsWidth = width;
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devmode.dmPelsHeight = height;
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devmode.dmDisplayFlags = 0;
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devmode.dmDisplayFrequency = freq;
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devmode.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT | DM_DISPLAYFLAGS;
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if (freq != 0)
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devmode.dmFields |= DM_DISPLAYFREQUENCY;
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cdsret = ChangeDisplaySettings(&devmode, CDS_FULLSCREEN);
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if (cdsret != DISP_CHANGE_SUCCESSFUL) {
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// Failed: so let's check to see if it's a wierd dual screen display
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printfDebug("Failed to set display mode... assuming dual monitors\n");
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devmode.dmPelsWidth = width * 2;
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cdsret = ChangeDisplaySettings(&devmode, CDS_FULLSCREEN);
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if (cdsret != DISP_CHANGE_SUCCESSFUL) {
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printfDebug("Failed to set display mode using dual monitors\n");
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throwException(env, "Failed to set display mode.");
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return;
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}
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}
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modeSet = true;
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}
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int getGammaRampLength(void)
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{
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return 256;
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}
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void setGammaRamp(JNIEnv * env, jobject gammaRampBuffer)
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{
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int i;
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float scaledRampEntry;
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WORD rampEntry;
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HDC screenDC;
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const float *gammaRamp = (const float *)(*env)->GetDirectBufferAddress(env, gammaRampBuffer);
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// Turn array of floats into array of RGB WORDs
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for (i = 0; i < 256; i ++) {
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scaledRampEntry = gammaRamp[i]*0xffff;
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rampEntry = (WORD)scaledRampEntry;
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currentGamma[i] = rampEntry;
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currentGamma[i + 256] = rampEntry;
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currentGamma[i + 512] = rampEntry;
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}
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screenDC = GetDC(NULL);
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if (SetDeviceGammaRamp(screenDC, currentGamma) == FALSE) {
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throwException(env, "Failed to set device gamma.");
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}
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ReleaseDC(NULL, screenDC);
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}
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jobject initDisplay(JNIEnv * env)
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{
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int width;
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int height;
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int bpp;
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int freq;
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jclass jclass_DisplayMode;
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jmethodID ctor;
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jobject newMode;
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// Determine the current screen resolution
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// Get the screen
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HDC screenDC = GetDC(NULL);
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if (!screenDC) {
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throwException(env, "Couldn't get screen DC!");
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return NULL;
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}
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// Get the device caps
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width = GetDeviceCaps(screenDC, HORZRES);
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height = GetDeviceCaps(screenDC, VERTRES);
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bpp = GetDeviceCaps(screenDC, BITSPIXEL);
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freq = GetDeviceCaps(screenDC, VREFRESH);
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if (freq <= 1)
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freq = 0; // Unknown
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jclass_DisplayMode = (*env)->FindClass(env, "org/lwjgl/opengl/DisplayMode");
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ctor = (*env)->GetMethodID(env, jclass_DisplayMode, "<init>", "(IIII)V");
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newMode = (*env)->NewObject(env, jclass_DisplayMode, ctor, width, height, bpp, freq);
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// Get the default gamma ramp
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if (GetDeviceGammaRamp(screenDC, originalGamma) == FALSE) {
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printfDebug("Failed to get initial device gamma\n");
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}
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memcpy(currentGamma, originalGamma, sizeof(WORD)*GAMMA_SIZE);
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ReleaseDC(NULL, screenDC);
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return newMode;
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}
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void resetDisplayMode(JNIEnv * env) {
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// Return device gamma to normal
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HDC screenDC = GetDC(NULL);
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if (!SetDeviceGammaRamp(screenDC, originalGamma)) {
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printfDebug("Could not reset device gamma\n");
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}
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ReleaseDC(NULL, screenDC);
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if (modeSet) {
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modeSet = false;
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// Under Win32, all we have to do is:
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ChangeDisplaySettings(NULL, 0);
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// And we'll call init() again to put the correct mode back in Display
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if (env != NULL)
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initDisplay(env);
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}
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}
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/*
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* Put display settings back to what they were when the window is maximized.
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*/
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void restoreDisplayMode(void) {
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// Restore gamma
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HDC screenDC = GetDC(NULL);
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LONG cdsret;
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if (!SetDeviceGammaRamp(screenDC, currentGamma)) {
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printfDebug("Could not restore device gamma\n");
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}
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ReleaseDC(NULL, screenDC);
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if (!modeSet) {
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printfDebug("Attempting to restore the display mode\n");
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modeSet = true;
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cdsret = ChangeDisplaySettings(&devmode, CDS_FULLSCREEN);
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if (cdsret != DISP_CHANGE_SUCCESSFUL) {
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printfDebug("Failed to restore display mode\n");
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}
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}
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}
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static char * getDriver() {
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#define MY_BUFSIZE 256
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HKEY hKey;
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static TCHAR szAdapterKey[MY_BUFSIZE], szDriverValue[MY_BUFSIZE];
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DWORD dwBufLen = MY_BUFSIZE;
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LONG lRet;
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if(RegOpenKeyEx(HKEY_LOCAL_MACHINE,
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TEXT("HARDWARE\\DeviceMap\\Video"),
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0,
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KEY_QUERY_VALUE,
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&hKey) != ERROR_SUCCESS) return NULL;
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lRet = RegQueryValueEx(hKey,
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TEXT("\\Device\\Video0"),
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NULL,
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NULL,
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(LPBYTE)szAdapterKey,
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&dwBufLen);
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RegCloseKey(hKey);
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if(lRet != ERROR_SUCCESS) return NULL;
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printfDebug("Adapter key: %s\n", szAdapterKey);
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// szAdapterKey now contains something like \Registry\Machine\System\CurrentControlSet\Control\Video\{B70DBD2A-90C4-41CF-A58E-F3BA69F1A6BC}\0000
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// We'll check for the first chunk:
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if (strnicmp("\\Registry\\Machine", szAdapterKey, 17) == 0) {
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// Yes, it's right, so let's look for that key now
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TCHAR szDriverKey[MY_BUFSIZE];
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strcpy(szDriverKey, &szAdapterKey[18]);
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if(RegOpenKeyEx(HKEY_LOCAL_MACHINE,
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TEXT(szDriverKey),
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0,
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KEY_QUERY_VALUE,
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&hKey) != ERROR_SUCCESS) return NULL;
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lRet = RegQueryValueEx(hKey,
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TEXT("InstalledDisplayDrivers"),
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NULL,
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NULL,
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(LPBYTE)szDriverValue,
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&dwBufLen);
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RegCloseKey(hKey);
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}
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if(lRet != ERROR_SUCCESS) return NULL;
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return szDriverValue;
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}
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jstring getAdapter(JNIEnv * env)
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{
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jstring ret = NULL;
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char *driver = getDriver();
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if (driver == NULL) {
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return NULL;
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}
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ret = NewStringNative(env, driver);
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return ret;
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}
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jstring getVersion(JNIEnv * env)
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{
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jstring ret = NULL;
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TCHAR driverDLL[256] = "\0";
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DWORD var = 0;
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DWORD dwInfoSize;
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LPVOID lpInfoBuff;
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BOOL bRetval;
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char *driver = getDriver();
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if (driver == NULL) {
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return NULL;
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}
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strcat(driverDLL, driver);
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strcat(driverDLL, ".dll");
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dwInfoSize = GetFileVersionInfoSize(driverDLL, &var);
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lpInfoBuff = malloc(dwInfoSize);
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bRetval = GetFileVersionInfo(driverDLL, 0, dwInfoSize, lpInfoBuff);
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if (bRetval == 0) {
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} else {
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VS_FIXEDFILEINFO * fxdFileInfo;
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UINT uiLen = 0;
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bRetval = VerQueryValue(lpInfoBuff, TEXT("\\"), (void **) &fxdFileInfo, &uiLen);
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if (bRetval != 0) {
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TCHAR version[256];
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TCHAR ms[10], ls[10];
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sprintf(ms, "%d.%d\0", fxdFileInfo->dwProductVersionMS >> 16, fxdFileInfo->dwProductVersionMS & 0xFFFF);
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sprintf(ls, "%d.%d\0", fxdFileInfo->dwProductVersionLS >> 16, fxdFileInfo->dwProductVersionLS & 0xFFFF);
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sprintf(version, "%s.%s\0", ms, ls);
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ret = NewStringNative(env, version);
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}
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}
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free(lpInfoBuff);
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return ret;
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}
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