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GraphicsCaptureSource.cpp
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/********************************************************************************
Copyright (C) 2012 Hugh Bailey <[email protected]>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
********************************************************************************/
#include "GraphicsCapture.h"
typedef HANDLE(WINAPI *CRTPROC)(HANDLE, LPSECURITY_ATTRIBUTES, SIZE_T, LPTHREAD_START_ROUTINE, LPVOID, DWORD, LPDWORD);
typedef BOOL(WINAPI *WPMPROC)(HANDLE, LPVOID, LPCVOID, SIZE_T, SIZE_T*);
typedef LPVOID(WINAPI *VAEPROC)(HANDLE, LPVOID, SIZE_T, DWORD, DWORD);
typedef BOOL(WINAPI *VFEPROC)(HANDLE, LPVOID, SIZE_T, DWORD);
typedef HANDLE(WINAPI *OPPROC) (DWORD, BOOL, DWORD);
BOOL WINAPI InjectLibrary(HANDLE hProcess, CTSTR lpDLL)
{
UPARAM procAddress;
DWORD dwTemp, dwSize;
LPVOID lpStr = NULL;
BOOL bWorks, bRet = 0;
HANDLE hThread = NULL;
SIZE_T writtenSize;
if (!hProcess) return 0;
dwSize = ssize((TCHAR*)lpDLL);
//--------------------------------------------------------
int obfSize = 12;
char pWPMStr[19], pCRTStr[19], pVAEStr[15], pVFEStr[14], pLLStr[13];
mcpy(pWPMStr, "RvnrdPqmni|}Dmfegm", 19); //WriteProcessMemory with each character obfuscated
mcpy(pCRTStr, "FvbgueQg`c{k]`yotp", 19); //CreateRemoteThread with each character obfuscated
mcpy(pVAEStr, "WiqvpekGeddiHt", 15); //VirtualAllocEx with each character obfuscated
mcpy(pVFEStr, "Wiqvpek@{mnOu", 14); //VirtualFreeEx with each character obfuscated
mcpy(pLLStr, "MobfImethzr", 12); //LoadLibrary with each character obfuscated
#ifdef UNICODE
pLLStr[11] = 'W';
#else
pLLStr[11] = 'A';
#endif
pLLStr[12] = 0;
obfSize += 6;
for (int i = 0; i<obfSize; i++) pWPMStr[i] ^= i ^ 5;
for (int i = 0; i<obfSize; i++) pCRTStr[i] ^= i ^ 5;
obfSize -= 4;
for (int i = 0; i<obfSize; i++) pVAEStr[i] ^= i ^ 1;
obfSize -= 1;
for (int i = 0; i<obfSize; i++) pVFEStr[i] ^= i ^ 1;
obfSize -= 2;
for (int i = 0; i<obfSize; i++) pLLStr[i] ^= i ^ 1;
HMODULE hK32 = GetModuleHandle(TEXT("KERNEL32"));
WPMPROC pWriteProcessMemory = (WPMPROC)GetProcAddress(hK32, pWPMStr);
CRTPROC pCreateRemoteThread = (CRTPROC)GetProcAddress(hK32, pCRTStr);
VAEPROC pVirtualAllocEx = (VAEPROC)GetProcAddress(hK32, pVAEStr);
VFEPROC pVirtualFreeEx = (VFEPROC)GetProcAddress(hK32, pVFEStr);
//--------------------------------------------------------
lpStr = (LPVOID)(*pVirtualAllocEx)(hProcess, NULL, dwSize, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
if (!lpStr) goto end;
bWorks = (*pWriteProcessMemory)(hProcess, lpStr, (LPVOID)lpDLL, dwSize, &writtenSize);
if (!bWorks) goto end;
procAddress = (UPARAM)GetProcAddress(hK32, pLLStr);
if (!procAddress) goto end;
hThread = (*pCreateRemoteThread)(hProcess, NULL, 0, (LPTHREAD_START_ROUTINE)procAddress, lpStr, 0, &dwTemp);
if (!hThread) goto end;
if (WaitForSingleObject(hThread, 2000) == WAIT_OBJECT_0)
{
DWORD dw;
GetExitCodeThread(hThread, &dw);
bRet = dw != 0;
SetLastError(0);
}
end:
DWORD lastError;
if (!bRet)
lastError = GetLastError();
if (hThread)
CloseHandle(hThread);
if (lpStr)
(*pVirtualFreeEx)(hProcess, lpStr, 0, MEM_RELEASE);
if (!bRet)
SetLastError(lastError);
return bRet;
}
bool GraphicsCaptureSource::Init(XElement *data)
{
this->data = data;
capture = NULL;
injectHelperProcess = NULL;
Log(TEXT("Using graphics capture"));
return true;
}
GraphicsCaptureSource::~GraphicsCaptureSource()
{
if (injectHelperProcess)
CloseHandle(injectHelperProcess);
if (warningID)
{
API->RemoveStreamInfo(warningID);
warningID = 0;
}
EndScene(); //should never actually need to be called, but doing it anyway just to be safe
}
static bool GetCaptureInfo(CaptureInfo &ci, DWORD processID)
{
HANDLE hFileMap = OpenFileMapping(FILE_MAP_ALL_ACCESS, FALSE, String() << INFO_MEMORY << UINT(processID));
if(hFileMap == NULL)
{
AppWarning(TEXT("GetCaptureInfo: Could not open file mapping"));
return false;
}
CaptureInfo *infoIn;
infoIn = (CaptureInfo*)MapViewOfFile(hFileMap, FILE_MAP_ALL_ACCESS, 0, 0, sizeof(CaptureInfo));
if(!infoIn)
{
AppWarning(TEXT("GetCaptureInfo: Could not map view of file"));
CloseHandle(hFileMap);
return false;
}
mcpy(&ci, infoIn, sizeof(CaptureInfo));
if(infoIn)
UnmapViewOfFile(infoIn);
if(hFileMap)
CloseHandle(hFileMap);
return true;
}
void GraphicsCaptureSource::NewCapture()
{
if(capture)
{
Log(TEXT("GraphicsCaptureSource::NewCapture: eliminating old capture"));
capture->Destroy();
delete capture;
capture = NULL;
}
if(!hSignalRestart)
{
hSignalRestart = GetEvent(String() << RESTART_CAPTURE_EVENT << UINT(targetProcessID));
if(!hSignalRestart)
{
RUNONCE AppWarning(TEXT("GraphicsCaptureSource::NewCapture: Could not create restart event"));
return;
}
}
hSignalEnd = GetEvent(String() << END_CAPTURE_EVENT << UINT(targetProcessID));
if(!hSignalEnd)
{
RUNONCE AppWarning(TEXT("GraphicsCaptureSource::NewCapture: Could not create end event"));
return;
}
hSignalReady = GetEvent(String() << CAPTURE_READY_EVENT << UINT(targetProcessID));
if(!hSignalReady)
{
RUNONCE AppWarning(TEXT("GraphicsCaptureSource::NewCapture: Could not create ready event"));
return;
}
hSignalExit = GetEvent(String() << APP_EXIT_EVENT << UINT(targetProcessID));
if(!hSignalExit)
{
RUNONCE AppWarning(TEXT("GraphicsCaptureSource::NewCapture: Could not create exit event"));
return;
}
CaptureInfo info;
if(!GetCaptureInfo(info, targetProcessID))
return;
bFlip = info.bFlip != 0;
hwndCapture = (HWND)info.hwndCapture;
if(info.captureType == CAPTURETYPE_MEMORY)
capture = new MemoryCapture;
else if(info.captureType == CAPTURETYPE_SHAREDTEX)
capture = new SharedTexCapture;
else
{
API->LeaveSceneMutex();
RUNONCE AppWarning(TEXT("GraphicsCaptureSource::NewCapture: wtf, bad data from the target process"));
return;
}
if(!capture->Init(info))
{
capture->Destroy();
delete capture;
capture = NULL;
}
}
void GraphicsCaptureSource::EndCapture()
{
if(capture)
{
capture->Destroy();
delete capture;
capture = NULL;
}
if(hOBSIsAlive)
CloseHandle(hOBSIsAlive);
if(hSignalRestart)
CloseHandle(hSignalRestart);
if(hSignalEnd)
CloseHandle(hSignalEnd);
if(hSignalReady)
CloseHandle(hSignalReady);
if(hSignalExit)
CloseHandle(hSignalExit);
if (hTargetProcess)
{
CloseHandle(hTargetProcess);
hTargetProcess = NULL;
}
hSignalRestart = hSignalEnd = hSignalReady = hSignalExit = hOBSIsAlive = NULL;
bErrorAcquiring = false;
bCapturing = false;
captureCheckInterval = -1.0f;
hwndCapture = NULL;
targetProcessID = 0;
foregroundPID = 0;
foregroundCheckCount = 0;
if(warningID)
{
API->RemoveStreamInfo(warningID);
warningID = 0;
}
}
void GraphicsCaptureSource::Preprocess()
{
}
void GraphicsCaptureSource::BeginScene()
{
if(bCapturing)
return;
strWindowClass = data->GetString(TEXT("windowClass"));
strExecutable = data->GetString(TEXT("executable"));
if (strWindowClass.IsEmpty() && strExecutable.IsEmpty())
{
Log(TEXT("GraphicsCaptureSource::BeginScene: No class or executable specified, what's happening?!"));
return;
}
bUseDWMCapture = (scmpi(strWindowClass, TEXT("Dwm")) == 0);
bStretch = data->GetInt(TEXT("stretchImage")) != 0;
bAlphaBlend = data->GetInt(TEXT("alphaBlend")) != 0;
bIgnoreAspect = data->GetInt(TEXT("ignoreAspect")) != 0;
bCaptureMouse = data->GetInt(TEXT("captureMouse"), 1) != 0;
bool safeHookVal = data->GetInt(TEXT("safeHook")) != 0;
if (safeHookVal != useSafeHook && safeHookVal)
Log(L"Using anti-cheat hooking for game capture");
useSafeHook = safeHookVal;
bUseHotkey = data->GetInt(TEXT("useHotkey"), 0) != 0;
hotkey = data->GetInt(TEXT("hotkey"), VK_F12);
if(bUseHotkey)
{
hotkeyID = OBSCreateHotkey(hotkey, (OBSHOTKEYPROC)GraphicsCaptureSource::CaptureHotkey, (UPARAM)this);
bUseDWMCapture = false;
}
gamma = data->GetInt(TEXT("gamma"), 100);
if(bCaptureMouse && data->GetInt(TEXT("invertMouse")))
invertShader = CreatePixelShaderFromFile(TEXT("shaders\\InvertTexture.pShader"));
drawShader = CreatePixelShaderFromFile(TEXT("shaders\\DrawTexture_ColorAdjust.pShader"));
if (!bUseHotkey)
AttemptCapture();
}
BOOL GraphicsCaptureSource::CheckFileIntegrity(LPCTSTR strDLL)
{
HANDLE hFileTest = CreateFile(strDLL, GENERIC_READ | GENERIC_EXECUTE, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
if (hFileTest == INVALID_HANDLE_VALUE)
{
String strWarning;
DWORD err = GetLastError();
if (err == ERROR_FILE_NOT_FOUND)
strWarning = TEXT("Important game capture files have been deleted. This is likely due to anti-virus software. Please make sure the OBS folder is excluded or ignored from any anti-virus / security software and re-install OBS.");
else if (err == ERROR_ACCESS_DENIED)
strWarning = TEXT("Important game capture files can not be loaded. This is likely due to anti-virus or security software. Please make sure the OBS folder is excluded / ignored from any anti-virus / security software.");
else
strWarning = FormattedString(TEXT("Important game capture files can not be loaded (error %d). This is likely due to anti-virus or security software. Please make sure the OBS folder is excluded / ignored from any anti-virus / security software."), err);
Log(TEXT("GraphicsCaptureSource::CheckFileIntegrity: Error %d while accessing %s"), err, strDLL);
//not sure if we should be using messagebox here, but probably better than "help why do i have black screen"
OBSMessageBox(API->GetMainWindow(), strWarning.Array(), NULL, MB_ICONERROR | MB_OK);
return FALSE;
}
else
{
CloseHandle(hFileTest);
return TRUE;
}
}
HWND FindVisibleWindow(CTSTR lpClass, CTSTR lpTitle)
{
HWND hwndNext = nullptr;
HWND hwnd = nullptr;
do
{
hwnd = FindWindowEx(NULL, hwndNext, lpClass, lpTitle);
if (hwnd && IsWindowVisible(hwnd))
break;
hwndNext = hwnd;
} while (hwnd != nullptr);
return hwnd;
}
struct FindWindowData
{
String classname;
String exename;
HWND hwnd;
OPPROC pOpenProcess;
};
// This function is responsible for finding the window the user wanted to capture.
// Possible improvements:
// * Allow matching on window title and possibly other criteria (foreground, visible, etc)
// * Allow user to specify which things to match on as a bitmask to match tricky programs
BOOL CALLBACK GraphicsCaptureFindWindow(HWND hwnd, LPARAM lParam)
{
TCHAR windowClass[256];
TCHAR windowExecutable[MAX_PATH];
windowClass[_countof(windowClass)-1] = windowExecutable[MAX_PATH-1] = 0;
FindWindowData *fwd = (FindWindowData *)lParam;
if (!IsWindowVisible(hwnd))
return TRUE;
if (GetClassName(hwnd, windowClass, _countof(windowClass) - 1) && !scmp(windowClass, fwd->classname))
{
//handle old sources which lack an exe name
if (fwd->exename.IsEmpty())
return TRUE;
DWORD processID;
GetWindowThreadProcessId(hwnd, &processID);
HANDLE hProc = fwd->pOpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, processID);
if (hProc)
{
DWORD wLen = _countof(windowExecutable) - 1;
if (QueryFullProcessImageName(hProc, 0, windowExecutable, &wLen))
{
TCHAR *p;
p = wcsrchr(windowExecutable, '\\');
if (p)
p++;
else
p = windowExecutable;
slwr(p);
if (!scmp(p, fwd->exename))
{
CloseHandle(hProc);
fwd->hwnd = hwnd;
return FALSE;
}
}
else
{
RUNONCE Log(TEXT("OpenProcess worked but QueryFullProcessImageName returned %d for pid %d?"), GetLastError(), processID);
}
CloseHandle(hProc);
}
}
return TRUE;
}
void GraphicsCaptureSource::AttemptCapture()
{
OSDebugOut(TEXT("attempting to capture..\n"));
if (scmpi(strWindowClass, L"dwm") == 0)
{
hwndTarget = FindWindow(strWindowClass, NULL);
}
else
{
FindWindowData fwd;
//FIXME: duplicated code, but we need OpenProcess here
char pOPStr[12];
mcpy(pOPStr, "NpflUvhel{x", 12); //OpenProcess obfuscated
for (int i = 0; i<11; i++) pOPStr[i] ^= i ^ 1;
fwd.pOpenProcess = (OPPROC)GetProcAddress(GetModuleHandle(TEXT("KERNEL32")), pOPStr);
fwd.classname = strWindowClass;
fwd.exename = strExecutable;
fwd.hwnd = nullptr;
EnumWindows(GraphicsCaptureFindWindow, (LPARAM)&fwd);
hwndTarget = fwd.hwnd;
}
// use foregroundwindow as fallback (should be NULL if not using hotkey capture)
if (!hwndTarget)
hwndTarget = hwndNextTarget;
hwndNextTarget = nullptr;
OSDebugOut(L"Window: %s: ", strWindowClass.Array());
if (hwndTarget)
{
OSDebugOut(L"Valid window\n");
targetThreadID = GetWindowThreadProcessId(hwndTarget, &targetProcessID);
if (!targetThreadID || !targetProcessID)
{
AppWarning(TEXT("GraphicsCaptureSource::AttemptCapture: GetWindowThreadProcessId failed, GetLastError = %u"), GetLastError());
bErrorAcquiring = true;
return;
}
}
else
{
OSDebugOut(L"Bad window\n");
if (!bUseHotkey && !warningID)
{
//Log(TEXT("GraphicsCaptureSource::AttemptCapture: Window '%s' [%s] not found."), strWindowClass.Array(), strExecutable.Array());
warningID = API->AddStreamInfo(Str("Sources.SoftwareCaptureSource.WindowNotFound"), StreamInfoPriority_High);
}
bCapturing = false;
return;
}
if (injectHelperProcess && WaitForSingleObject(injectHelperProcess, 0) == WAIT_TIMEOUT)
return;
if(warningID)
{
API->RemoveStreamInfo(warningID);
warningID = 0;
}
//-------------------------------------------
// see if we already hooked the process. if not, inject DLL
char pOPStr[12];
mcpy(pOPStr, "NpflUvhel{x", 12); //OpenProcess obfuscated
for (int i=0; i<11; i++) pOPStr[i] ^= i^1;
OPPROC pOpenProcess = (OPPROC)GetProcAddress(GetModuleHandle(TEXT("KERNEL32")), pOPStr);
DWORD permission = useSafeHook ? (PROCESS_QUERY_INFORMATION | PROCESS_VM_READ) : (PROCESS_ALL_ACCESS);
HANDLE hProcess = (*pOpenProcess)(permission, FALSE, targetProcessID);
if(hProcess)
{
DWORD dwSize = MAX_PATH;
wchar_t processName[MAX_PATH];
memset(processName, 0, sizeof(processName));
QueryFullProcessImageName(hProcess, 0, processName, &dwSize);
if (dwSize != 0 && scmpi(processName, lastProcessName) != 0)
{
if (processName[0])
{
wchar_t *fileName = srchr(processName, '\\');
Log(L"Trying to hook process: %s", (fileName ? fileName+1 : processName));
}
scpy_n(lastProcessName, processName, MAX_PATH-1);
}
//-------------------------------------------
// load keepalive event
hOBSIsAlive = CreateEvent(NULL, FALSE, FALSE, String() << OBS_KEEPALIVE_EVENT << UINT(targetProcessID));
//-------------------------------------------
hwndCapture = hwndTarget;
hSignalRestart = OpenEvent(EVENT_ALL_ACCESS, FALSE, String() << RESTART_CAPTURE_EVENT << UINT(targetProcessID));
if(hSignalRestart)
{
OSDebugOut(L"Setting signal for process ID %u\n", targetProcessID);
SetEvent(hSignalRestart);
bCapturing = true;
captureWaitCount = 0;
}
else
{
BOOL bSameBit = TRUE;
BOOL b32bit = TRUE;
if (Is64BitWindows())
{
BOOL bCurrentProcessWow64, bTargetProcessWow64;
IsWow64Process(GetCurrentProcess(), &bCurrentProcessWow64);
IsWow64Process(hProcess, &bTargetProcessWow64);
bSameBit = (bCurrentProcessWow64 == bTargetProcessWow64);
}
if(Is64BitWindows())
IsWow64Process(hProcess, &b32bit);
//verify the hook DLL is accessible
String strDLL;
DWORD dwDirSize = GetCurrentDirectory(0, NULL);
strDLL.SetLength(dwDirSize);
GetCurrentDirectory(dwDirSize, strDLL);
strDLL << TEXT("\\plugins\\GraphicsCapture\\GraphicsCaptureHook");
if (!b32bit)
strDLL << TEXT("64");
strDLL << TEXT(".dll");
if (!CheckFileIntegrity(strDLL.Array()))
{
OSDebugOut(L"Error acquiring\n");
bErrorAcquiring = true;
}
else
{
if (bSameBit && !useSafeHook)
{
if (InjectLibrary(hProcess, strDLL))
{
captureWaitCount = 0;
OSDebugOut(L"Inject successful\n");
bCapturing = true;
}
else
{
AppWarning(TEXT("GraphicsCaptureSource::AttemptCapture: Failed to inject library, GetLastError = %u"), GetLastError());
bErrorAcquiring = true;
}
}
else
{
String strDLLPath;
DWORD dwDirSize = GetCurrentDirectory(0, NULL);
strDLLPath.SetLength(dwDirSize);
GetCurrentDirectory(dwDirSize, strDLLPath);
strDLLPath << TEXT("\\plugins\\GraphicsCapture");
String strHelper = strDLLPath;
strHelper << ((b32bit) ? TEXT("\\injectHelper.exe") : TEXT("\\injectHelper64.exe"));
if (!CheckFileIntegrity(strHelper.Array()))
{
bErrorAcquiring = true;
}
else
{
String strCommandLine;
strCommandLine << TEXT("\"") << strHelper << TEXT("\" ");
if (useSafeHook)
strCommandLine << UIntString(targetThreadID) << " 1";
else
strCommandLine << UIntString(targetProcessID) << " 0";
//---------------------------------------
PROCESS_INFORMATION pi;
STARTUPINFO si;
zero(&pi, sizeof(pi));
zero(&si, sizeof(si));
si.cb = sizeof(si);
if (CreateProcess(strHelper, strCommandLine, NULL, NULL, FALSE, 0, NULL, strDLLPath, &si, &pi))
{
int exitCode = 0;
CloseHandle(pi.hThread);
if (!useSafeHook)
{
WaitForSingleObject(pi.hProcess, INFINITE);
GetExitCodeProcess(pi.hProcess, (DWORD*)&exitCode);
CloseHandle(pi.hProcess);
}
else
{
injectHelperProcess = pi.hProcess;
}
if (exitCode == 0)
{
captureWaitCount = 0;
bCapturing = true;
}
else
{
AppWarning(TEXT("GraphicsCaptureSource::AttemptCapture: Failed to inject library, error code = %d"), exitCode);
bErrorAcquiring = true;
}
}
else
{
AppWarning(TEXT("GraphicsCaptureSource::AttemptCapture: Could not create inject helper, GetLastError = %u"), GetLastError());
bErrorAcquiring = true;
}
}
}
}
}
//save a copy of the process handle which we injected into, this lets us check for process exit in Tick()
if (!hTargetProcess)
{
if (!DuplicateHandle(GetCurrentProcess(), hProcess, GetCurrentProcess(), &hTargetProcess, 0, FALSE, DUPLICATE_SAME_ACCESS))
{
Log(TEXT("Warning: Couldn't DuplicateHandle, %d"), GetLastError());
}
}
CloseHandle(hProcess);
if (!bCapturing)
{
CloseHandle(hOBSIsAlive);
hOBSIsAlive = NULL;
}
}
else
{
AppWarning(TEXT("GraphicsCaptureSource::AttemptCapture: OpenProcess failed, GetLastError = %u"), GetLastError());
bErrorAcquiring = true;
}
}
void GraphicsCaptureSource::EndScene()
{
if(capture)
{
capture->Destroy();
delete capture;
capture = NULL;
}
delete invertShader;
invertShader = NULL;
delete drawShader;
drawShader = NULL;
delete cursorTexture;
cursorTexture = NULL;
hCurrentCursor = NULL;
if (hotkeyID)
{
OBSDeleteHotkey(hotkeyID);
hotkeyID = 0;
}
if(!bCapturing)
return;
bCapturing = false;
SetEvent(hSignalEnd);
EndCapture();
}
void GraphicsCaptureSource::Tick(float fSeconds)
{
if(hSignalExit && WaitForSingleObject(hSignalExit, 0) == WAIT_OBJECT_0) {
Log(TEXT("Exit signal received, terminating capture"));
EndCapture();
}
if(bCapturing && !hSignalReady && targetProcessID)
hSignalReady = GetEvent(String() << CAPTURE_READY_EVENT << UINT(targetProcessID));
if (injectHelperProcess && WaitForSingleObject(injectHelperProcess, 0) == WAIT_OBJECT_0)
{
DWORD exitCode;
GetExitCodeProcess(injectHelperProcess, (DWORD*)&exitCode);
CloseHandle(injectHelperProcess);
injectHelperProcess = nullptr;
if (exitCode != 0)
{
AppWarning(TEXT("safe inject Helper: Failed, error code = %d"), exitCode);
bErrorAcquiring = true;
}
}
if (hSignalReady) {
DWORD val = WaitForSingleObject(hSignalReady, 0);
if (val == WAIT_OBJECT_0)
NewCapture();
else if (val != WAIT_TIMEOUT)
OSDebugOut(TEXT("what the heck? val is 0x%08lX\n"), val);
}
static int floong = 0;
if (hSignalReady) {
if (floong++ == 60) {
OSDebugOut(TEXT("valid, bCapturing = %s\n"), bCapturing ? TEXT("true") : TEXT("false"));
floong = 0;
}
} else {
if (floong++ == 60) {
OSDebugOut(TEXT("not valid, bCapturing = %s\n"), bCapturing ? TEXT("true") : TEXT("false"));
floong = 0;
}
}
if(bCapturing && !capture)
{
if(++captureWaitCount >= API->GetMaxFPS())
{
bCapturing = false;
}
}
captureCheckInterval += fSeconds;
if(!bCapturing && !bErrorAcquiring)
{
if ((!bUseHotkey && captureCheckInterval >= 3.0f) ||
(bUseHotkey && hwndNextTarget != NULL))
{
if (bUseHotkey && hwndNextTarget)
{
strWindowClass.SetLength(255);
RealGetWindowClassW(hwndNextTarget, strWindowClass.Array(), 255);
strWindowClass.SetLength(slen(strWindowClass));
data->SetString(L"windowClass", strWindowClass);
}
AttemptCapture();
captureCheckInterval = 0.0f;
}
}
else
{
if(!IsWindow(hwndCapture) && !bUseDWMCapture) {
Log(TEXT("Capture window 0x%08lX invalid or changing, terminating capture"), DWORD(hwndCapture));
EndCapture();
} else if (hTargetProcess && WaitForSingleObject(hTargetProcess, 0) == WAIT_OBJECT_0) {
Log(TEXT("Capture process %s exited, terminating capture"), strExecutable.Array());
EndCapture();
} else if (bUseHotkey && hwndNextTarget && hwndNextTarget != hwndTarget) {
Log(TEXT("Capture hotkey triggered for new window, terminating capture"));
EndCapture();
} else if (captureCheckInterval >= 5.0f) {
//expensive check, only run it every 5 seconds
DWORD processID;
if (GetWindowThreadProcessId(hwndCapture, &processID) && processID != targetProcessID) {
Log(TEXT("Capture window 0x%08lX changed owner to process %d (trying to capture %d), terminating capture"), DWORD(hwndCapture), processID, targetProcessID);
EndCapture();
}
captureCheckInterval = 0.0f;
} else {
hwndNextTarget = NULL;
}
}
}
inline double round(double val)
{
if(!_isnan(val) || !_finite(val))
return val;
if(val > 0.0f)
return floor(val+0.5);
else
return floor(val-0.5);
}
void RoundVect2(Vect2 &v)
{
v.x = float(round(v.x));
v.y = float(round(v.y));
}
void GraphicsCaptureSource::Render(const Vect2 &pos, const Vect2 &size)
{
if(capture)
{
Shader *lastShader = GetCurrentPixelShader();
float fGamma = float(-(gamma-100) + 100) * 0.01f;
LoadPixelShader(drawShader);
HANDLE hGamma = drawShader->GetParameterByName(TEXT("gamma"));
if(hGamma)
drawShader->SetFloat(hGamma, fGamma);
//----------------------------------------------------------
// capture mouse
bMouseCaptured = false;
if(bCaptureMouse)
{
CURSORINFO ci;
zero(&ci, sizeof(ci));
ci.cbSize = sizeof(ci);
if(GetCursorInfo(&ci) && (hwndCapture || bUseDWMCapture))
{
mcpy(&cursorPos, &ci.ptScreenPos, sizeof(cursorPos));
if(!bUseDWMCapture)
ScreenToClient(hwndCapture, &cursorPos);
if(ci.flags & CURSOR_SHOWING)
{
if(ci.hCursor == hCurrentCursor)
bMouseCaptured = true;
else
{
HICON hIcon = CopyIcon(ci.hCursor);
hCurrentCursor = ci.hCursor;
delete cursorTexture;
cursorTexture = NULL;
if(hIcon)
{
ICONINFO ii;
if(GetIconInfo(hIcon, &ii))
{
xHotspot = int(ii.xHotspot);
yHotspot = int(ii.yHotspot);
UINT width, height;
LPBYTE lpData = GetCursorData(hIcon, ii, width, height);
if(lpData && width && height)
{
cursorTexture = CreateTexture(width, height, GS_BGRA, lpData, FALSE);
if(cursorTexture)
bMouseCaptured = true;
Free(lpData);
}
DeleteObject(ii.hbmColor);
DeleteObject(ii.hbmMask);
}
DestroyIcon(hIcon);
}
}
}
}
}
//----------------------------------------------------------
// game texture
Texture *tex = capture->LockTexture();
Vect2 texPos = Vect2(0.0f, 0.0f);
Vect2 texStretch = Vect2(1.0f, 1.0f);
if(tex)
{
Vect2 texSize = Vect2(float(tex->Width()), float(tex->Height()));
Vect2 totalSize = API->GetBaseSize();
Vect2 center = totalSize*0.5f;
if(!bAlphaBlend)
BlendFunction(GS_BLEND_ONE, GS_BLEND_ZERO);
else
BlendFunction(GS_BLEND_SRCALPHA, GS_BLEND_INVSRCALPHA);
if(bStretch)
{
if(bIgnoreAspect)
texStretch *= totalSize;
else
{
float xAspect = totalSize.x / texSize.x;
float yAspect = totalSize.y / texSize.y;
float multiplyVal = ((texSize.y * xAspect) > totalSize.y) ? yAspect : xAspect;
texStretch *= texSize*multiplyVal;
texPos = center-(texStretch*0.5f);
}
}
else
{
texStretch *= texSize;
texPos = center-(texStretch*0.5f);
}
Vect2 sizeAdjust = size/totalSize;
texPos *= sizeAdjust;
texPos += pos;
texStretch *= sizeAdjust;
RoundVect2(texPos);
RoundVect2(texSize);
if(bFlip)
DrawSprite(tex, 0xFFFFFFFF, texPos.x, texPos.y+texStretch.y, texPos.x+texStretch.x, texPos.y);
else
DrawSprite(tex, 0xFFFFFFFF, texPos.x, texPos.y, texPos.x+texStretch.x, texPos.y+texStretch.y);
capture->UnlockTexture();
BlendFunction(GS_BLEND_SRCALPHA, GS_BLEND_INVSRCALPHA);
//----------------------------------------------------------
// draw mouse
if (!foregroundCheckCount)
{
//only check for foreground window every 10 frames since this involves two syscalls