274 lines
7.2 KiB
C++
274 lines
7.2 KiB
C++
// ScreenSpy.cpp: implementation of the CScreenSpy class.
|
||
//
|
||
//////////////////////////////////////////////////////////////////////
|
||
|
||
#include "stdafx.h"
|
||
#include "ScreenSpy.h"
|
||
#include "Common.h"
|
||
#include <stdio.h>
|
||
|
||
//////////////////////////////////////////////////////////////////////
|
||
// Construction/Destruction
|
||
//////////////////////////////////////////////////////////////////////
|
||
|
||
CScreenSpy::CScreenSpy(ULONG ulbiBitCount)
|
||
{
|
||
m_bAlgorithm = ALGORITHM_DIFF;
|
||
m_dwBitBltRop = SRCCOPY;
|
||
m_BitmapInfor_Full = NULL;
|
||
switch (ulbiBitCount)
|
||
{
|
||
case 16:
|
||
case 32:
|
||
m_ulbiBitCount = ulbiBitCount;
|
||
break;
|
||
default:
|
||
m_ulbiBitCount = 16;
|
||
}
|
||
|
||
m_hDeskTopWnd = GetDesktopWindow();
|
||
m_hFullDC = GetDC(m_hDeskTopWnd);
|
||
|
||
m_hFullMemDC = CreateCompatibleDC(m_hFullDC);
|
||
//::GetSystemMetrics(SM_CXSCREEN/SM_CYSCREEN)获取屏幕大小不准
|
||
//例如当屏幕显示比例为125%时，获取到的屏幕大小需要乘以1.25才对
|
||
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;
|
||
printf("=> 桌面缩放比例: %.2f, %.2f\t分辨率：%d x %d\n", m_wZoom, m_hZoom, m_ulFullWidth, m_ulFullHeight);
|
||
m_wZoom = 1.0/m_wZoom, m_hZoom = 1.0/m_hZoom;
|
||
m_BitmapInfor_Full = ConstructBI(m_ulbiBitCount,m_ulFullWidth, m_ulFullHeight);
|
||
m_BitmapData_Full = NULL;
|
||
m_BitmapHandle = ::CreateDIBSection(m_hFullDC, m_BitmapInfor_Full,
|
||
DIB_RGB_COLORS, &m_BitmapData_Full, NULL, NULL);
|
||
::SelectObject(m_hFullMemDC, m_BitmapHandle);
|
||
|
||
m_RectBuffer = new BYTE[m_BitmapInfor_Full->bmiHeader.biSizeImage * 2];
|
||
|
||
m_RectBufferOffset = 0;
|
||
|
||
m_hDiffMemDC = CreateCompatibleDC(m_hFullDC);
|
||
m_DiffBitmapHandle = ::CreateDIBSection(m_hFullDC, m_BitmapInfor_Full,
|
||
DIB_RGB_COLORS, &m_DiffBitmapData_Full, NULL, NULL);
|
||
::SelectObject(m_hDiffMemDC, m_DiffBitmapHandle);
|
||
}
|
||
|
||
|
||
CScreenSpy::~CScreenSpy()
|
||
{
|
||
ReleaseDC(m_hDeskTopWnd, m_hFullDC); //GetDC
|
||
if (m_hFullMemDC!=NULL)
|
||
{
|
||
DeleteDC(m_hFullMemDC); //Create匹配内存DC
|
||
|
||
::DeleteObject(m_BitmapHandle);
|
||
if (m_BitmapData_Full!=NULL)
|
||
{
|
||
m_BitmapData_Full = NULL;
|
||
}
|
||
|
||
m_hFullMemDC = NULL;
|
||
}
|
||
|
||
if (m_hDiffMemDC!=NULL)
|
||
{
|
||
DeleteDC(m_hDiffMemDC); //Create匹配内存DC
|
||
|
||
::DeleteObject(m_DiffBitmapHandle);
|
||
if (m_DiffBitmapData_Full!=NULL)
|
||
{
|
||
m_DiffBitmapData_Full = NULL;
|
||
}
|
||
}
|
||
|
||
if (m_BitmapInfor_Full!=NULL)
|
||
{
|
||
delete[] m_BitmapInfor_Full;
|
||
m_BitmapInfor_Full = NULL;
|
||
}
|
||
|
||
if (m_RectBuffer)
|
||
{
|
||
delete[] m_RectBuffer;
|
||
m_RectBuffer = NULL;
|
||
}
|
||
|
||
m_RectBufferOffset = 0;
|
||
}
|
||
|
||
|
||
ULONG CScreenSpy::GetBISize()
|
||
{
|
||
ULONG ColorNum = m_ulbiBitCount <= 8 ? 1 << m_ulbiBitCount : 0;
|
||
|
||
return sizeof(BITMAPINFOHEADER) + (ColorNum * sizeof(RGBQUAD));
|
||
}
|
||
|
||
LPBITMAPINFO CScreenSpy::GetBIData()
|
||
{
|
||
return m_BitmapInfor_Full;
|
||
}
|
||
|
||
LPBITMAPINFO CScreenSpy::ConstructBI(ULONG ulbiBitCount,
|
||
ULONG ulFullWidth, ULONG ulFullHeight)
|
||
{
|
||
int ColorNum = ulbiBitCount <= 8 ? 1 << ulbiBitCount : 0;
|
||
ULONG ulBitmapLength = sizeof(BITMAPINFOHEADER) + (ColorNum * sizeof(RGBQUAD)); //BITMAPINFOHEADER + 调色板的个数
|
||
BITMAPINFO *BitmapInfor = (BITMAPINFO *) new BYTE[ulBitmapLength]; //[][]
|
||
|
||
BITMAPINFOHEADER* BitmapInforHeader = &(BitmapInfor->bmiHeader);
|
||
|
||
BitmapInforHeader->biSize = sizeof(BITMAPINFOHEADER);//pi si
|
||
BitmapInforHeader->biWidth = ulFullWidth; //1080
|
||
BitmapInforHeader->biHeight = ulFullHeight; //1920
|
||
BitmapInforHeader->biPlanes = 1;
|
||
BitmapInforHeader->biBitCount = ulbiBitCount; //32
|
||
BitmapInforHeader->biCompression = BI_RGB;
|
||
BitmapInforHeader->biXPelsPerMeter = 0;
|
||
BitmapInforHeader->biYPelsPerMeter = 0;
|
||
BitmapInforHeader->biClrUsed = 0;
|
||
BitmapInforHeader->biClrImportant = 0;
|
||
BitmapInforHeader->biSizeImage =
|
||
((BitmapInforHeader->biWidth * BitmapInforHeader->biBitCount + 31)/32)*4* BitmapInforHeader->biHeight;
|
||
|
||
// 16位和以后的没有颜色表，直接返回
|
||
|
||
return BitmapInfor;
|
||
}
|
||
|
||
LPVOID CScreenSpy::GetFirstScreenData()
|
||
{
|
||
//用于从原设备中复制位图到目标设备
|
||
::BitBlt(m_hFullMemDC, 0, 0,
|
||
m_ulFullWidth, m_ulFullHeight, m_hFullDC, 0, 0, m_dwBitBltRop);
|
||
|
||
return m_BitmapData_Full; //内存
|
||
}
|
||
|
||
|
||
ULONG CScreenSpy::GetFirstScreenLength()
|
||
{
|
||
return m_BitmapInfor_Full->bmiHeader.biSizeImage;
|
||
}
|
||
|
||
LPVOID CScreenSpy::GetNextScreenData(ULONG* ulNextSendLength)
|
||
{
|
||
if (m_RectBuffer == NULL)
|
||
{
|
||
return NULL;
|
||
}
|
||
|
||
// 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_CursorInfor.GetCurrentCursorIndex();
|
||
WriteRectBuffer(&bCursorIndex, sizeof(BYTE));
|
||
|
||
// 差异比较算法
|
||
if (m_bAlgorithm == ALGORITHM_DIFF)
|
||
{
|
||
// 分段扫描全屏幕 将新的位图放入到m_hDiffMemDC中
|
||
ScanScreen(m_hDiffMemDC, m_hFullDC, m_BitmapInfor_Full->bmiHeader.biWidth,
|
||
m_BitmapInfor_Full->bmiHeader.biHeight);
|
||
|
||
//两个Bit进行比较如果不一样修改m_lpvFullBits中的返回
|
||
*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;
|
||
}
|
||
|
||
|
||
VOID CScreenSpy::WriteRectBuffer(LPBYTE szBuffer,ULONG ulLength)
|
||
{
|
||
memcpy(m_RectBuffer + m_RectBufferOffset, szBuffer, ulLength);
|
||
m_RectBufferOffset += ulLength;
|
||
}
|
||
|
||
|
||
VOID CScreenSpy::ScanScreen(HDC hdcDest, HDC hdcSour, ULONG ulWidth, ULONG ulHeight)
|
||
{
|
||
AUTO_TICK(70);
|
||
#if COPY_ALL
|
||
BitBlt(hdcDest, 0, 0, ulWidth, ulHeight, hdcSour, 0, 0, m_dwBitBltRop);
|
||
#else
|
||
const ULONG ulJumpLine = 50;
|
||
const ULONG ulJumpSleep = ulJumpLine / 10;
|
||
|
||
for (int i = 0, ulToJump = 0; i < ulHeight; i += ulToJump)
|
||
{
|
||
ULONG ulv1 = ulHeight - i;
|
||
|
||
if (ulv1 > ulJumpLine)
|
||
ulToJump = ulJumpLine;
|
||
else
|
||
ulToJump = ulv1;
|
||
BitBlt(hdcDest, 0, i, ulWidth, ulToJump, hdcSour,0, i, m_dwBitBltRop);
|
||
Sleep(ulJumpSleep);
|
||
}
|
||
#endif
|
||
}
|
||
|
||
|
||
ULONG CScreenSpy::CompareBitmap(LPBYTE CompareSourData, LPBYTE CompareDestData,
|
||
LPBYTE szBuffer, DWORD ulCompareLength)
|
||
{
|
||
AUTO_TICK(20);
|
||
// Windows规定一个扫描行所占的字节数必须是4的倍数, 所以用DWORD比较
|
||
LPDWORD p1 = (LPDWORD)CompareDestData, p2 = (LPDWORD)CompareSourData;
|
||
// 偏移的偏移，不同长度的偏移
|
||
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;
|
||
// 记录数据大小的存放位置
|
||
ulv1 = ulszBufferOffset + sizeof(int);
|
||
ulv2 = ulv1 + sizeof(int);
|
||
ulCount = 0; // 数据计数器归零
|
||
|
||
// 更新Dest中的数据
|
||
*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;
|
||
// 更新Dest中的数据
|
||
*p1 = *p2;
|
||
*(LPDWORD)(szBuffer + ulv2 + ulCount) = *p2;
|
||
ulCount += 4;
|
||
}
|
||
// 写入数据长度
|
||
*(LPDWORD)(szBuffer + ulv1) = ulCount;
|
||
ulszBufferOffset = ulv2 + ulCount;
|
||
}
|
||
|
||
return ulszBufferOffset;
|
||
}
|