2014.10.02 업무일지 [출석번호 21 이재우]

 

6 C 동적할당 레퍼런스 변수 동적할당 구조체 클래스 객체.pdf

 

 

 

 

 

 

 

 

 

6 교시 일기예보 카메라 영상 기법 소스 해석 및 분석

소스원본 저자: 김대희 군의 소스를 가져 와서 분석했네요.    나름 가져와서 삽질 하느라 ㅠ..ㅠ 다른 모자라는 부분은 다른 분께 패스여.

[대칭화면 해석]20141007-main.c

#include <windows.h>
#include "vfw.h"
#pragma comment(lib, "vfw32.lib")

#define BITMAP_MAXSIZE   (1024*768*3+10)
#define XOFFSET   280
#define X_WIDTH_SIZE   100

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK FramInfo(HWND, LPVIDEOHDR);

HINSTANCE g_hInst;
HWND hWndMain;
HWND hVFW;
HWND Hwndmain;
HBITMAP hBit;
BITMAPINFO Bm;
LPCTSTR lpszClass=TEXT("VFW");

HBITMAP hBit2;

int APIENTRY WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance
   ,LPSTR lpszCmdParam,int nCmdShow)
{
   HWND hWnd;
   MSG Message;
   WNDCLASS WndClass;
   g_hInst=hInstance;

   WndClass.cbClsExtra=0;
   WndClass.cbWndExtra=0;
   WndClass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
   WndClass.hCursor=LoadCursor(NULL,IDC_ARROW);
   WndClass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
   WndClass.hInstance=hInstance;
   WndClass.lpfnWndProc=WndProc;
   WndClass.lpszClassName=lpszClass;
   WndClass.lpszMenuName=NULL;
   WndClass.style=CS_HREDRAW | CS_VREDRAW;
   RegisterClass(&WndClass);

   hWnd=CreateWindow(lpszClass,lpszClass,WS_OVERLAPPEDWINDOW | WS_VSCROLL,
      100,40,800,660,
      NULL,(HMENU)NULL,hInstance,NULL);
   ShowWindow(hWnd,nCmdShow);

   while (GetMessage(&Message,NULL,0,0)) {
      TranslateMessage(&Message);
      DispatchMessage(&Message);
   }
   return (int)Message.wParam;
}

HDC MemDC;
PAINTSTRUCT ps;
HANDLE hFile;
static unsigned char * BMbuf;
static BITMAPFILEHEADER * stpBFH;
static BITMAPINFOHEADER * stpBIH;
static unsigned int uiX;
static unsigned int uiY;
static unsigned int uiPad;
static unsigned int uiXcount;
static unsigned int uiYcount;
static unsigned char * ucpPixel;
static DWORD dwRead;
HBITMAP OldBitmap;

LRESULT CALLBACK WndProc( HWND hWnd, UINT iMessage, WPARAM wParam, LPARAM lParam)
{
   HDC Hdc;

   switch(iMessage)
   {
   case WM_CREATE:

      Hwndmain = hWnd;
      Hdc  = GetDC(hWnd);
    //[1] File Open
      hFile = CreateFile(TEXT("image1.bmp"),
         GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
    //[2] 동적할당
      BMbuf = (unsigned char *)malloc(BITMAP_MAXSIZE);
      if(0 == BMbuf)//[3] 동적할당 실패시 에러 처리
      {
         MessageBox(hWnd, TEXT("동적할당을 받을 수 없습니다."), TEXT("오류"), MB_OK);
         DestroyWindow(hWnd);
      }

      if(INVALID_HANDLE_VALUE != hFile)//[3]-1 File Open
      {
         ReadFile(hFile, BMbuf, BITMAP_MAXSIZE, &dwRead, NULL);
         CloseHandle(hFile);
         
     //[4] 저장된 데이터 비트맵 파일 헤더 포인터 설정 
     stpBFH = (BITMAPFILEHEADER *)BMbuf;
         stpBIH = (BITMAPINFOHEADER *)(BMbuf + sizeof(BITMAPFILEHEADER));
     
     //[5] 윈도우 창 정보 셋팅 가로 세로 크기 지정
     uiX = (unsigned int)(stpBIH->biWidth);
         uiPad = uiX%4; 
         uiY = (unsigned int)(stpBIH->biHeight);
     
     //[6] MemDC 생성 및 백업  
         MemDC = CreateCompatibleDC(Hdc); //메모리에서 예비 출력할 영역 설정
     hBit2 = CreateCompatibleBitmap(Hdc, uiX, uiY * 2);//비트맵 창 생성
         OldBitmap = (HBITMAP)SelectObject(MemDC, hBit2); //이전 창은 백업 후 새 창 선택

         //[7] Bitmap 그리기 //시작---------------------------------------------
         ucpPixel = BMbuf + stpBFH->bfOffBits;
         for(uiYcount = uiY; 0 < uiYcount; --uiYcount)
         {
            for(uiXcount = uiX; 0 < uiXcount; --uiXcount)
            {
               SetPixel(MemDC, uiXcount-1, uiYcount-1,
                  RGB(*(ucpPixel+2), *(ucpPixel+1), *ucpPixel));
               ucpPixel = ucpPixel + 3;
            }
            ucpPixel = ucpPixel + uiPad;
         }

         SelectObject(MemDC, OldBitmap);//이전 창 다시 복귀
         DeleteDC(MemDC);
         
      }
      else  //[3]-2 File Open  실패시 에러 처리
      {
         MessageBox(hWnd, TEXT("파일을 열 수 없습니다."), TEXT("오류"), MB_OK);
         DestroyWindow(hWnd);
      }
    //[8] 영상 윈도우 화면 생성
      hVFW = capCreateCaptureWindow(TEXT("VFW"),
         WS_CHILD | WS_VISIBLE,0,0,320,240,hWnd,0);
      capDriverConnect(hVFW, 0); //[9] 드라이버 연결
      capPreviewRate(hVFW, 1);  //[10] 프레임 속도 설정(윈도우 핸들,갱신시간(ms))
      capPreview(hVFW, TRUE);
      capGetVideoFormat(hVFW, &Bm, sizeof(Bm));//[11]기존의 설정값을 읽어옮

      capSetVideoFormat(hVFW, &Bm, sizeof(Bm));//[12]바꾼 값을 다시 설정
      
    hBit = CreateCompatibleBitmap( Hdc, Bm.bmiHeader.biWidth, Bm.bmiHeader.biHeight);

      if (capSetCallbackOnFrame(hVFW, FramInfo) == FALSE)   //CALLBACK 등록 OS에서 Call함.
      {
         return FALSE;
      }

      ReleaseDC(hWnd, Hdc);
      return 0;
/*
   case WM_PAINT:
      Hdc = BeginPaint(hWnd, &ps);
      MemDC = CreateCompatibleDC(Hdc);
      OldBitmap = (HBITMAP)SelectObject(MemDC, hBit2);

      BitBlt(Hdc, 0, 320, uiX, uiY, MemDC, 0, 0, SRCCOPY);

      SelectObject(MemDC, OldBitmap);
      DeleteDC(MemDC);
      EndPaint(hWnd, &ps);
      return 0;
*/
   case WM_DESTROY:
      free(BMbuf);
      PostQuitMessage(0);
      return 0;
   }
   return (DefWindowProc(hWnd, iMessage, wParam, lParam));
}



LRESULT CALLBACK FramInfo(HWND hVFW, LPVIDEOHDR VideoHdr)
{
   HDC Hdc;
   HDC hMemDC;
   HBITMAP OldBitmap;
   int xCnt, yCnt; 
   int Jump = 0;

   Hdc = GetDC(Hwndmain);
   hMemDC = CreateCompatibleDC(Hdc);
   OldBitmap = (HBITMAP)SelectObject(hMemDC, hBit);

   ucpPixel = BMbuf + stpBFH->bfOffBits;
   for(yCnt = Bm.bmiHeader.biHeight ;yCnt > 0;--yCnt)
   {
      //for(xCnt = 0;xCnt < Bm.bmiHeader.biWidth;++xCnt)
      for(xCnt = Bm.bmiHeader.biWidth-1;xCnt >= 0 ;--xCnt)
      {
         if(100-1 > VideoHdr->lpData[Jump+2] )    //R  
         {
            if(100-1 > VideoHdr->lpData[Jump+1])  //G  
            {
               if(100-1 > VideoHdr->lpData[Jump+0])  //B  
               {
                  VideoHdr->lpData[Jump+2]=*(ucpPixel+2); 
                  VideoHdr->lpData[Jump+1]=*(ucpPixel+1); 
                  VideoHdr->lpData[Jump+0]=*(ucpPixel+0);    
          //회색에 가까운 색 변환(일기 예보등에 많이 사용)
               }//B
            }//G
         }//R
         SetPixel(hMemDC,xCnt ,yCnt, RGB(VideoHdr->lpData[Jump+2],VideoHdr->lpData[Jump+1],VideoHdr->lpData[Jump]) );
//     SetPixel(hMemDC,xCnt ,yCnt, RGB(VideoHdr->lpData[Jump+2],0,0) );// R(적색)
//     SetPixel(hMemDC,xCnt ,yCnt, RGB(0,VideoHdr->lpData[Jump+1],0) );// G(녹색)
//     SetPixel(hMemDC,xCnt ,yCnt, RGB(0,0,VideoHdr->lpData[Jump+0]) );// B(청색)
         Jump = Jump + 3;
         ucpPixel = ucpPixel + 3;
      }
      ucpPixel = ucpPixel + uiPad;
   }
   
   BitBlt( Hdc , 320 , 0, Bm.bmiHeader.biWidth, Bm.bmiHeader.biHeight, hMemDC, 0, 0, SRCCOPY);
   SelectObject(hMemDC,OldBitmap);
   DeleteDC(hMemDC);
   ReleaseDC(Hwndmain, Hdc);
   //MessageBox(NULL, TEXT("Fuck"), TEXT("u"), MB_OK);
   //Sleep(1000);
   return 0;
}