BMP - Win32

BITMAPFILEHEADER
BITMAPFILEINFOHEADER
RGBQUAD[]

DDB로 변경

LoadBitmap()

DeleteObject()

LoadImage()

IMAGE_BITMAP
IMAGE_ICON
IMAGE_CURSOR

LR_DEFAULTCOLOR
LR_LOADFROMFILE
LR_SHARED

DeleteObject()
DestroyIcon()
DestroyCursor()

ImageList_LoadBitmap()

ImageList_Destroy()

ImageList_Draw()

CreateDIBitmap()
CreateDIBSection()

DDB

CreateBitmap()
CreateBitmapIndirect()
CreateCompatibleBitmap()
DeleteObject()
GetObject()
SetDIBits()
GetDIBits()

저장하기

//------------------------------------------------------------------------------
// Name: void SaveImage(BITMAPINFOHEADER& bmiHeader, BYTE* pDIB)
// Desc: This method save color 24bit image to bmp file.
//------------------------------------------------------------------------------

// File filter for Save File dialog
#define FILE_FILTER_TEXT_1 \
    TEXT("BMP files (*.bmp)\0*.bmp;\0")\
    TEXT("All Files (*.*)\0*.*;\0\0")

// Begin default media search at root directory
#define DEFAULT_MEDIA_PATH  TEXT("\\\0")

// DIB header
#define DIB_HEADER_MARKER ((WORD)('M'<<8) | 'B')

void SaveImage(BITMAPINFOHEADER& bmiHeader, BYTE* pDIB)
{
    char pszFileName[MAX_PATH] = {0,};

    // Save File Dialog ...
    static OPENFILENAME ofn={0} ;
    static BOOL bSetInitialDir = FALSE ;

    ofn.lStructSize       = sizeof(OPENFILENAME) ;
    ofn.hwndOwner         = NULL ;
    ofn.lpstrFilter       = FILE_FILTER_TEXT_1 ;
    ofn.lpstrCustomFilter = NULL ;
    ofn.nFilterIndex      = 1 ;
    ofn.lpstrFile         = pszFileName ;
    ofn.nMaxFile          = MAX_PATH ;
    ofn.lpstrTitle        = TEXT("Save Bitmap File...\0") ;
    ofn.lpstrFileTitle    = NULL ;
    ofn.lpstrDefExt       = TEXT("bmp\0") ;
    ofn.Flags             = OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT;
   
    // Remember the path of the first selected file
    if (bSetInitialDir == FALSE)
    {
        ofn.lpstrInitialDir = DEFAULT_MEDIA_PATH ;
        bSetInitialDir = TRUE ;
    }
    else
        ofn.lpstrInitialDir = NULL ;

    // Retrieve the name of the selected file
    if (!GetSaveFileName((LPOPENFILENAME)&ofn))
        return;


    BITMAPFILEHEADER bmfHeader;

    // only 24bit color bitmap
    bmfHeader.bfType        = DIB_HEADER_MARKER;
    bmfHeader.bfOffBits        = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER);
    bmfHeader.bfSize        = sizeof(bmfHeader) + sizeof(BITMAPINFOHEADER) + bmiHeader.biSizeImage;
    bmfHeader.bfReserved1    = 0;
    bmfHeader.bfReserved2    = 0;

    HANDLE fd = CreateFile(pszFileName, GENERIC_WRITE, 0, NULL,
                                CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);

    DWORD dwLength;

    if (!WriteFile(fd, (LPSTR)&bmfHeader, sizeof(bmfHeader), &dwLength, NULL))
        return;

    if (!WriteFile(fd, (LPSTR)&bmiHeader, sizeof(BITMAPINFOHEADER), &dwLength, NULL))
        return;

    if (!WriteFile(fd, pDIB, bmiHeader.biSizeImage, &dwLength, NULL))
        return;

    CloseHandle(fd);
}

#undef DIB_HEADER_MARKER
#undef DEFAULT_MEDIA_PATH
#undef FILE_FILTER_TEXT_1

읽기

    BYTE                *    m_pDIB;
    BITMAPINFO            *    m_pbmInfo;
    BYTE                *    m_pDIBBits;

HRESULT CPushSource2Filter::ReadTheFile(LPCTSTR pszFileName, const AM_MEDIA_TYPE *pmt)
{
    // Open file
    HANDLE hFile = ::CreateFile(pszFileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING,
        FILE_ATTRIBUTE_NORMAL|FILE_ATTRIBUTE_ARCHIVE|FILE_ATTRIBUTE_READONLY, NULL);
    if (hFile == NULL)
        return E_FAIL;

    // Read file header
    BITMAPFILEHEADER bmfHeader;

    DWORD dwSizeRead;
    BOOL b = ::ReadFile(hFile, (LPVOID)&bmfHeader, sizeof(bmfHeader),
        &dwSizeRead, NULL);
    if (b == FALSE)
        return E_FAIL;

    // File type should be 'BM'
    if (bmfHeader.bfType != ((WORD)('M'<<8) | 'B'))
        return E_FAIL;

    // Get file size
    DWORD dwFileSize = ::GetFileSize(hFile, NULL);

    // Allocate memory for DIB
    m_pDIB = new BYTE[dwFileSize];
    if (m_pDIB == NULL)
        return E_FAIL;

    // Read the other data
    b = ::ReadFile(hFile, m_pDIB, dwFileSize - sizeof(bmfHeader),
        &dwSizeRead, NULL);
    if (dwSizeRead != dwFileSize - sizeof(bmfHeader))
    {
        delete m_pDIB;
        m_pDIB = NULL;
        return E_FAIL;
    }

    // Initialize the bitmap info pointer
    m_pbmInfo = (BITMAPINFO *)m_pDIB;

    // Initialize the DIB bits pointer
    int nColors = m_pbmInfo->bmiHeader.biClrUsed ?
        m_pbmInfo->bmiHeader.biClrUsed : 1 << m_pbmInfo->bmiHeader.biBitCount;

    if (m_pbmInfo->bmiHeader.biBitCount > 8)
        m_pDIBBits = (LPBYTE)((LPDWORD)(m_pbmInfo->bmiColors + m_pbmInfo->bmiHeader.biClrUsed)
                    + (m_pbmInfo->bmiHeader.biCompression == BI_BITFIELDS ? 3 : 0));
    else
        m_pDIBBits = (LPBYTE)(m_pbmInfo->bmiColors + nColors);
    ...
    // Close file
    BOOL b1 = ::CloseHandle(hFile);
    if (b1 == FALSE)
    {
        TRACE("Error to close the file handle!\n");
        return E_FAIL;
    }

    return S_OK;
}

참조 사이트:

http://www.codeguru.com/cpp/g-m/gdi/gdi/article.php/c3661/
http://minujang.egloos.com/2184644
http://k.daum.net/qna/view.html?qid=0Co7h