在C Win32中使用hBitmap=CreateDIBSection()保存.bmp文件
我有以下代码。我想用这些信息创建一个.bmp文件,显示内存中的数据,内存是从framegrabber复制到主内存的图像,有人能告诉我吗? 多谢各位在C Win32中使用hBitmap=CreateDIBSection()保存.bmp文件,c,file,winapi,save,bmp,C,File,Winapi,Save,Bmp,我有以下代码。我想用这些信息创建一个.bmp文件,显示内存中的数据,内存是从framegrabber复制到主内存的图像,有人能告诉我吗? 多谢各位 LPSTR CreateBMP( HWND hAppWnd, int nImageType ) { void*pWinGBits=NULL; int i; Z_BITMAPINFO zWinGHeader;//用于切割DIB的BITMAPINFO // create DC for bitmap. hDCBits = CreateCompatibl
LPSTR CreateBMP( HWND hAppWnd, int nImageType )
{void*pWinGBits=NULL; int i; Z_BITMAPINFO zWinGHeader;//用于切割DIB的BITMAPINFO
// create DC for bitmap.
hDCBits = CreateCompatibleDC( ghDCMain );
switch ( nImageType )
{
case bayer_filter:
zWinGHeader.bmiHeader.biSize = sizeof( BITMAPINFOHEADER );
zWinGHeader.bmiHeader.biPlanes = 1;
zWinGHeader.bmiHeader.biClrImportant = 0;
zWinGHeader.bmiHeader.biHeight = -lYSize;
zWinGHeader.bmiHeader.biWidth = lXSize;
zWinGHeader.bmiHeader.biBitCount = 32;
zWinGHeader.bmiHeader.biClrUsed = 0;//3;
zWinGHeader.bmiHeader.biCompression = BI_BITFIELDS;
zWinGHeader.bmiHeader.biSizeImage = 0;
zWinGHeader.bmiColors[0].rgbBlue = 0x00;
zWinGHeader.bmiColors[0].rgbGreen = 0x00;
zWinGHeader.bmiColors[0].rgbRed = 0xFF;
zWinGHeader.bmiColors[0].rgbReserved = 0x00;
zWinGHeader.bmiColors[1].rgbBlue = 0x00;
zWinGHeader.bmiColors[1].rgbGreen = 0xFF;
zWinGHeader.bmiColors[1].rgbRed = 0x00;
zWinGHeader.bmiColors[1].rgbReserved = 0x00;
zWinGHeader.bmiColors[2].rgbBlue = 0xFF;
zWinGHeader.bmiColors[2].rgbGreen = 0x00;
zWinGHeader.bmiColors[2].rgbRed = 0x00;
zWinGHeader.bmiColors[2].rgbReserved = 0x00;
break;
case color32:
zWinGHeader.bmiHeader.biSize = sizeof( BITMAPINFOHEADER );
zWinGHeader.bmiHeader.biPlanes = 1;
zWinGHeader.bmiHeader.biClrImportant = 0;
zWinGHeader.bmiHeader.biHeight = -lYSize;
zWinGHeader.bmiHeader.biWidth = lXSize/4;
zWinGHeader.bmiHeader.biBitCount = 32;
zWinGHeader.bmiHeader.biClrUsed = 0;
zWinGHeader.bmiHeader.biCompression = BI_BITFIELDS;
zWinGHeader.bmiHeader.biSizeImage = 0;
zWinGHeader.bmiColors[0].rgbBlue = 0x00;
zWinGHeader.bmiColors[0].rgbGreen = 0x00;
zWinGHeader.bmiColors[0].rgbRed = 0xFF;
zWinGHeader.bmiColors[0].rgbReserved = 0x00;
zWinGHeader.bmiColors[1].rgbBlue = 0x00;
zWinGHeader.bmiColors[1].rgbGreen = 0xFF;
zWinGHeader.bmiColors[1].rgbRed = 0x00;
zWinGHeader.bmiColors[1].rgbReserved = 0x00;
zWinGHeader.bmiColors[2].rgbBlue = 0xFF;
zWinGHeader.bmiColors[2].rgbGreen = 0x00;
zWinGHeader.bmiColors[2].rgbRed = 0x00;
zWinGHeader.bmiColors[2].rgbReserved = 0x00;
break;
case color24:
zWinGHeader.bmiHeader.biSize = sizeof( BITMAPINFOHEADER );
zWinGHeader.bmiHeader.biPlanes = 1;
zWinGHeader.bmiHeader.biClrImportant = 0;
zWinGHeader.bmiHeader.biHeight = -lYSize;
zWinGHeader.bmiHeader.biWidth = lXSize/3;
zWinGHeader.bmiHeader.biBitCount = 24;
zWinGHeader.bmiHeader.biClrUsed = 0;
zWinGHeader.bmiHeader.biCompression = BI_RGB;
zWinGHeader.bmiHeader.biSizeImage = 0;
break;
case color3x16:
zWinGHeader.bmiHeader.biSize = sizeof( BITMAPINFOHEADER );
zWinGHeader.bmiHeader.biPlanes = 1;
zWinGHeader.bmiHeader.biClrImportant = 0;
zWinGHeader.bmiHeader.biHeight = -lYSize;
zWinGHeader.bmiHeader.biWidth = lXSize/6;
zWinGHeader.bmiHeader.biBitCount = 32;
zWinGHeader.bmiHeader.biClrUsed = 0;
zWinGHeader.bmiHeader.biCompression = BI_BITFIELDS;
zWinGHeader.bmiHeader.biSizeImage = 0;
zWinGHeader.bmiColors[0].rgbBlue = 0x00;
zWinGHeader.bmiColors[0].rgbGreen = 0x00;
zWinGHeader.bmiColors[0].rgbRed = 0xFF;
zWinGHeader.bmiColors[0].rgbReserved = 0x00;
zWinGHeader.bmiColors[1].rgbBlue = 0x00;
zWinGHeader.bmiColors[1].rgbGreen = 0xFF;
zWinGHeader.bmiColors[1].rgbRed = 0x00;
zWinGHeader.bmiColors[1].rgbReserved = 0x00;
zWinGHeader.bmiColors[2].rgbBlue = 0xFF;
zWinGHeader.bmiColors[2].rgbGreen = 0x00;
zWinGHeader.bmiColors[2].rgbRed = 0x00;
zWinGHeader.bmiColors[2].rgbReserved = 0x00;
break;
case bw1x10:
// create bitmap-infoheader.
zWinGHeader.bmiHeader.biSize = sizeof( BITMAPINFOHEADER );
zWinGHeader.bmiHeader.biPlanes = 1;
zWinGHeader.bmiHeader.biBitCount = 8;
zWinGHeader.bmiHeader.biCompression = BI_RGB;
zWinGHeader.bmiHeader.biSizeImage = 0;
zWinGHeader.bmiHeader.biClrUsed = 256;
zWinGHeader.bmiHeader.biClrImportant= 0;
zWinGHeader.bmiHeader.biHeight = -lYSize;
zWinGHeader.bmiHeader.biWidth = lXSize/2;
// create colortable fot bitmap (grayvalues).
for (i = 0; i < 256; i++)
{
zWinGHeader.bmiColors[i].rgbGreen = i;
zWinGHeader.bmiColors[i].rgbBlue = i;
zWinGHeader.bmiColors[i].rgbRed = i;
zWinGHeader.bmiColors[i].rgbReserved = 0;
}
break;
default:
case bw8:
// create bitmap-infoheader.
zWinGHeader.bmiHeader.biSize = sizeof( BITMAPINFOHEADER );
zWinGHeader.bmiHeader.biPlanes = 1;
zWinGHeader.bmiHeader.biBitCount = 8;
zWinGHeader.bmiHeader.biCompression = BI_RGB;
zWinGHeader.bmiHeader.biSizeImage = 0;
zWinGHeader.bmiHeader.biClrUsed = 256;
zWinGHeader.bmiHeader.biClrImportant= 0;
zWinGHeader.bmiHeader.biHeight = -lYSize;
zWinGHeader.bmiHeader.biWidth = lXSize;
// create colortable fot bitmap (grayvalues).
for (i = 0; i < 256; i++)
{
zWinGHeader.bmiColors[i].rgbGreen = i;
zWinGHeader.bmiColors[i].rgbBlue = i;
zWinGHeader.bmiColors[i].rgbRed = i;
zWinGHeader.bmiColors[i].rgbReserved = 0;
}
break;
}
// cerate identity palette
hPal = CreateIdentityPalette( zWinGHeader.bmiColors );
// get new palette into DC and map into physical palette register.
hOldPal = SelectPalette( ghDCMain, hPal, FALSE);
RealizePalette( ghDCMain );
// cerate DIB-Section f黵 direct access of image-data.
hBitmap = CreateDIBSection(
hDCBits, // handle of device context
(BITMAPINFO *)&zWinGHeader, // address of structure containing
// bitmap size, format and color data
DIB_RGB_COLORS, // color data type indicator: RGB values
// or palette indices
&pWinGBits, // pointer to variable to receive a pointer
// to the bitmap's bit values
NULL, // optional handle to a file mapping object
0 // offset to the bitmap bit values within
// the file mapping object
);
// get bitmap into DC .
hOldBitmap = (HBITMAP)SelectObject( hDCBits, hBitmap );
return pWinGBits; // return pointer to DIB
//为位图创建DC。
hDCBits=CreateCompatibleDC(ghDCMain);
开关(nImageType)
{
案例拜耳过滤器:
zWinGHeader.bmiHeader.biSize=sizeof(BitMapInfo头文件);
zWinGHeader.bmiHeader.biPlanes=1;
zWinGHeader.bmiHeader.biClrImportant=0;
zWinGHeader.bmiHeader.biHeight=-lYSize;
zWinGHeader.bmiHeader.biWidth=lXSize;
zWinGHeader.bmiHeader.bibibitCount=32;
zWinGHeader.bmiHeader.biclrued=0;//3;
zWinGHeader.bmiHeader.biCompression=BI_位字段;
zWinGHeader.bmiHeader.biSizeImage=0;
zWinGHeader.bmiColors[0].rgbBlue=0x00;
zWinGHeader.bmiColors[0].rgbGreen=0x00;
zWinGHeader.bmiColors[0].rgbreed=0xFF;
zWinGHeader.bmiColors[0].rgbReserved=0x00;
zWinGHeader.bmiColors[1].rgbBlue=0x00;
zWinGHeader.bmiColors[1].rgbGreen=0xFF;
zWinGHeader.bmiColors[1].rgred=0x00;
zWinGHeader.bmiColors[1].rgbReserved=0x00;
zWinGHeader.bmiColors[2].rgbBlue=0xFF;
zWinGHeader.bmiColors[2].rgbGreen=0x00;
zWinGHeader.bmiColors[2].rgred=0x00;
zWinGHeader.bmiColors[2].rgbReserved=0x00;
打破
外壳颜色32:
zWinGHeader.bmiHeader.biSize=sizeof(BitMapInfo头文件);
zWinGHeader.bmiHeader.biPlanes=1;
zWinGHeader.bmiHeader.biClrImportant=0;
zWinGHeader.bmiHeader.biHeight=-lYSize;
zWinGHeader.bmiHeader.biWidth=lXSize/4;
zWinGHeader.bmiHeader.bibibitCount=32;
zWinGHeader.bmiHeader.biclrued=0;
zWinGHeader.bmiHeader.biCompression=BI_位字段;
zWinGHeader.bmiHeader.biSizeImage=0;
zWinGHeader.bmiColors[0].rgbBlue=0x00;
zWinGHeader.bmiColors[0].rgbGreen=0x00;
zWinGHeader.bmiColors[0].rgbreed=0xFF;
zWinGHeader.bmiColors[0].rgbReserved=0x00;
zWinGHeader.bmiColors[1].rgbBlue=0x00;
zWinGHeader.bmiColors[1].rgbGreen=0xFF;
zWinGHeader.bmiColors[1].rgred=0x00;
zWinGHeader.bmiColors[1].rgbReserved=0x00;
zWinGHeader.bmiColors[2].rgbBlue=0xFF;
zWinGHeader.bmiColors[2].rgbGreen=0x00;
zWinGHeader.bmiColors[2].rgred=0x00;
zWinGHeader.bmiColors[2].rgbReserved=0x00;
打破
外壳颜色24:
zWinGHeader.bmiHeader.biSize=sizeof(BitMapInfo头文件);
zWinGHeader.bmiHeader.biPlanes=1;
zWinGHeader.bmiHeader.biClrImportant=0;
zWinGHeader.bmiHeader.biHeight=-lYSize;
zWinGHeader.bmiHeader.biWidth=lXSize/3;
zWinGHeader.bmiHeader.bibibitCount=24;
zWinGHeader.bmiHeader.biclrued=0;
zWinGHeader.bmiHeader.biCompression=BI_RGB;
zWinGHeader.bmiHeader.biSizeImage=0;
打破
外壳颜色3x16:
zWinGHeader.bmiHeader.biSize=sizeof(BitMapInfo头文件);
zWinGHeader.bmiHeader.biPlanes=1;
zWinGHeader.bmiHeader.biClrImportant=0;
zWinGHeader.bmiHeader.biHeight=-lYSize;
zWinGHeader.bmiHeader.biWidth=lXSize/6;
zWinGHeader.bmiHeader.bibibitCount=32;
zWinGHeader.bmiHeader.biclrued=0;
zWinGHeader.bmiHeader.biCompression=BI_位字段;
zWinGHeader.bmiHeader.biSizeImage=0;
zWinGHeader.bmiColors[0].rgbBlue=0x00;
zWinGHeader.bmiColors[0].rgbGreen=0x00;
zWinGHeader.bmiColors[0].rgbreed=0xFF;
zWinGHeader.bmiColors[0].rgbReserved=0x00;
zWinGHeader.bmiColors[1].rgbBlue=0x00;
zWinGHeader.bmiColors[1].rgbGreen=0xFF;
zWinGHeader.bmiColors[1].rgred=0x00;
zWinGHeader.bmiColors[1].rgbReserved=0x00;
zWinGHeader.bmiColors[2].rgbBlue=0xFF;
zWinGHeader.bmiColors[2].rgbGreen=0x00;
zWinGHeader.bmiColors[2].rgred=0x00;
zWinGHeader.bmiColors[2].rgbReserved=0x00;
打破
案例bw1x10:
//创建位图信息头。
zWinGHeader.bmiHeader.biSize=sizeof(BitMapInfo头文件);
zWinGHeader.bmiHeader.biPlanes=1;
zWinGHeader.bmiHeader.bibibitCount=8;
zWinGHeader.bmiHeader.biCompression=BI_RGB;
zWinGHeader.bmiHeader.biSizeImage=0;
zWinGHeader.bmiHeader.biclrued=256;
zWinGHeader.bmiHeader.biClrImportant=0;
zWinGHeader.bmiHeader.biHeight=-lYSize;
zWinGHeader.bmiHeader.biWidth=lXSize/2;
//创建彩色fot位图(灰度值)。
对于(i=0;i<256;i++)
{
zWinGHeader.bmiColors[i].rgbGreen=i;
zWinGHeader.bmiColors[i].rgbBlue=i;
zWinGHeader.bmiColors[i].rgred=i;
zWinGHeader.bmiColors[i].rgbReserved=0;
}
打破
违约:
案例bw8:
//创建位图信息头。
zWinGHeader.bmiHeader.biSize=sizeof(BitMapInfo头文件);
zWinGHeader.bmiHeader.biPlanes=1;
zWinGHeader.bmiHeader.bibibitCount=8;
zWinGHeader.bmiHeader.biCompression=BI_RGB;
zWinGHeader.bmiHeader.biSizeImage=0;
zWinGHeader.bmiHeader.biclrued=256;
zWinGHeader.bmiHeader.biClrImportant=0;
zWinGHeader.bmiHeader.biHeight=-lYSize;
zWinGHeader.bmiHeader.biWidth=lXSize;
//创建彩色fot位图(灰度值)。
对于(i=0;i<256;i++)
{
zWinGHeader.bmiColors[i].rgbGreen=i;
zWinGHeader.bmiColors[i].rgbBlue=i;
zWinGHead
PBITMAPINFO CreateBitmapInfoStruct(HBITMAP hBmp)
{
BITMAP bmp;
PBITMAPINFO pbmi;
WORD cClrBits;
// Retrieve the bitmap color format, width, and height.
if (!GetObject(hBmp, sizeof(BITMAP), (LPSTR)&bmp))
return NULL;
// Convert the color format to a count of bits.
cClrBits = (WORD)(bmp.bmPlanes * bmp.bmBitsPixel);
if (cClrBits == 1)
cClrBits = 1;
else if (cClrBits <= 4)
cClrBits = 4;
else if (cClrBits <= 8)
cClrBits = 8;
else if (cClrBits <= 16)
cClrBits = 16;
else if (cClrBits <= 24)
cClrBits = 24;
else cClrBits = 32;
// Allocate memory for the BITMAPINFO structure. (This structure
// contains a BITMAPINFOHEADER structure and an array of RGBQUAD
// data structures.)
if (cClrBits != 24)
pbmi = (PBITMAPINFO) LocalAlloc(LPTR,
sizeof(BITMAPINFOHEADER) +
sizeof(RGBQUAD) * (1<< cClrBits));
// There is no RGBQUAD array for the 24-bit-per-pixel format.
else
pbmi = (PBITMAPINFO) LocalAlloc(LPTR,
sizeof(BITMAPINFOHEADER));
// Initialize the fields in the BITMAPINFO structure.
pbmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
pbmi->bmiHeader.biWidth = bmp.bmWidth;
pbmi->bmiHeader.biHeight = bmp.bmHeight;
pbmi->bmiHeader.biPlanes = bmp.bmPlanes;
pbmi->bmiHeader.biBitCount = bmp.bmBitsPixel;
if (cClrBits < 24)
pbmi->bmiHeader.biClrUsed = (1<<cClrBits);
// If the bitmap is not compressed, set the BI_RGB flag.
pbmi->bmiHeader.biCompression = BI_RGB;
// Compute the number of bytes in the array of color
// indices and store the result in biSizeImage.
// For Windows NT, the width must be DWORD aligned unless
// the bitmap is RLE compressed. This example shows this.
// For Windows 95/98/Me, the width must be WORD aligned unless the
// bitmap is RLE compressed.
pbmi->bmiHeader.biSizeImage = ((pbmi->bmiHeader.biWidth * cClrBits +31) & ~31) /8
* pbmi->bmiHeader.biHeight;
// Set biClrImportant to 0, indicating that all of the
// device colors are important.
pbmi->bmiHeader.biClrImportant = 0;
return pbmi;
}
void CreateBMPFile(LPTSTR pszFile, PBITMAPINFO pbi,
HBITMAP hBMP, HDC hDC)
{
HANDLE hf; // file handle
BITMAPFILEHEADER hdr; // bitmap file-header
PBITMAPINFOHEADER pbih; // bitmap info-header
LPBYTE lpBits; // memory pointer
DWORD dwTotal; // total count of bytes
DWORD cb; // incremental count of bytes
BYTE *hp; // byte pointer
DWORD dwTmp;
pbih = (PBITMAPINFOHEADER) pbi;
lpBits = (LPBYTE) GlobalAlloc(GMEM_FIXED, pbih->biSizeImage);
if (!lpBits)
return;
// Retrieve the color table (RGBQUAD array) and the bits
// (array of palette indices) from the DIB.
if (!GetDIBits(hDC, hBMP, 0, (WORD) pbih->biHeight, lpBits, pbi,
DIB_RGB_COLORS))
{
return;
}
// Create the .BMP file.
hf = CreateFile(pszFile,
GENERIC_READ | GENERIC_WRITE,
(DWORD) 0,
NULL,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
(HANDLE) NULL);
if (hf == INVALID_HANDLE_VALUE)
return;
hdr.bfType = 0x4d42; // 0x42 = "B" 0x4d = "M"
// Compute the size of the entire file.
hdr.bfSize = (DWORD) (sizeof(BITMAPFILEHEADER) +
pbih->biSize + pbih->biClrUsed
* sizeof(RGBQUAD) + pbih->biSizeImage);
hdr.bfReserved1 = 0;
hdr.bfReserved2 = 0;
// Compute the offset to the array of color indices.
hdr.bfOffBits = (DWORD) sizeof(BITMAPFILEHEADER) +
pbih->biSize + pbih->biClrUsed
* sizeof (RGBQUAD);
// Copy the BITMAPFILEHEADER into the .BMP file.
if (!WriteFile(hf, (LPVOID) &hdr, sizeof(BITMAPFILEHEADER),
(LPDWORD) &dwTmp, NULL))
{
return;
}
// Copy the BITMAPINFOHEADER and RGBQUAD array into the file.
if (!WriteFile(hf, (LPVOID) pbih, sizeof(BITMAPINFOHEADER)
+ pbih->biClrUsed * sizeof (RGBQUAD),
(LPDWORD) &dwTmp, ( NULL)))
return;
// Copy the array of color indices into the .BMP file.
dwTotal = cb = pbih->biSizeImage;
hp = lpBits;
if (!WriteFile(hf, (LPSTR) hp, (int) cb, (LPDWORD) &dwTmp,NULL))
return;
// Close the .BMP file.
if (!CloseHandle(hf))
return;
// Free memory.
GlobalFree((HGLOBAL)lpBits);
}
//code for saving bitmap
HBITMAP hBitmap;
HDC hdc;
...
PBITMAPINFO pBitmapInfo = CreateBitmapInfoStruct(hBitmap);
CreateBMPFile(_T("c:\\temp\\picture.bmp"), pBitmapInfo, hBitmap, hdc);