Exemplos de CDib::ConvertFormat em C++ (Cpp)

Exemplo n.º 1

Arquivo: Jpeg.cpp Projeto: chinalufei/Red

// save Jpeg file
BOOL CJpeg::Save(LPCSTR lpstrFileName, CDib* pDib, BOOL bColor, int nQuality)
{
	if (pDib == NULL)
		pDib = m_pDib;
	if (pDib == NULL)
		return FALSE;

	HDIB hDib = CopyHandle(pDib->GetHandle());
	if (hDib == NULL)
		return FALSE;

	CDib* pDibTmp = new CDib;
	pDibTmp->Attach(hDib);

	if (pDibTmp->GetBitCount() != 24)
		pDibTmp->ConvertFormat(24);

	UINT uWidth  = pDibTmp->GetWidth();
	UINT uHeight = pDibTmp->GetHeight();

	// convert from DIB format (DWORD aligned, vertically flipped, red and blue swapped)
	BYTE* tmp = ClearDwordAlign(pDibTmp->GetBitsPtr(),
									uWidth,
									WIDTHBYTES(uWidth * 24),
									uHeight);
	if (tmp == NULL)
		return FALSE;

	// convert from DIB
	VertFlipBuf(tmp, uWidth*3, uHeight);

	BGRFromRGB(tmp, uWidth, uHeight);

	BOOL bSuccess = WriteJPEGFile(lpstrFileName,
							tmp,
							uWidth, 
							uHeight,
							bColor,
							nQuality);

	delete pDibTmp;
	FreeBuffer(tmp);

	return bSuccess;
}

Exemplo n.º 2

Arquivo: ImagePcx.cpp Projeto: chinalufei/Red

//******************* 保存为PCX (由CDib对象) ***********************
BOOL LanImage::SavePcx(LPCTSTR lpstrFileName, CDib* pDib)
{
    int i = 0;
	if (pDib == NULL)
		return FALSE;

	HDIB hDib = CopyHandle(pDib->GetHandle());
	if (hDib == NULL)
		return FALSE;

	CDib* pDibTmp = new CDib();
	pDibTmp->Attach(hDib);

	UINT uWidth  = pDibTmp->GetWidth();
	UINT uHeight = pDibTmp->GetHeight();

	// 当打开的图像BitCount不为8时，转为8位格式
	if (pDibTmp->GetBitCount() != 8)
		pDibTmp->ConvertFormat(8);

	// make PCX header
	PCXHEAD header;
	memset((LPBYTE)&header, 0, sizeof(PCXHEAD));
	header.manufacturer = 0x0A;
	header.version = 5;
	header.encoding = 1;
	header.bit_per_pixel = 8;
	//header.bit_per_pixel = 24;
	header.xmin = 0;
	header.ymin = 0;
	header.xmax = uWidth-1;
	header.ymax = uHeight-1;
	//header.Xresolution;
	//header.Yresolution;
	header.palette[0] = (BYTE)0x00;  // for correct process for mono
	header.palette[1] = (BYTE)0x00;
	header.palette[2] = (BYTE)0x00;
	header.palette[3] = (BYTE)0xff;
	header.palette[4] = (BYTE)0xff;
	header.palette[5] = (BYTE)0xff;
	//header.palette[48];
	header.reserved = 0;
	header.color_planes = 1;
	header.byte_per_line = uWidth;
	header.palette_type = 1;
	//filler[58];

	// construct PCX palette from DIB color table
	PCXPALETTE palette[256];
	PALETTEENTRY PaletteColors[256];
	pDibTmp->GetPalette()->GetPaletteEntries(0, 256, PaletteColors);
	for (i=0;i<256;i++) 
	{
		palette[i].rgbRed   = PaletteColors[i].peRed;
		palette[i].rgbGreen = PaletteColors[i].peGreen;
		palette[i].rgbBlue  = PaletteColors[i].peBlue;
	}

	// get bits ptr
	HDIB hDIB = CopyHandle(pDibTmp->GetHandle());
	delete pDibTmp;
	LPBYTE lpDIB = (LPBYTE)GlobalLock(hDIB);
	BYTE* lpBuffer = (BYTE *)FindDIBBits(lpDIB);
	WORD wWidthBytes = (WORD)BytesPerLine(lpDIB);

	/*** Open the PCX file ***/
	FILE *outFile;
	if ((outFile=fopen(lpstrFileName,"wb")) == NULL)
	{
		GlobalUnlock(hDIB);
		GlobalFree(hDIB);
		return FALSE;
	}

	/*** Write the header ***/
	fwrite((char *)&header, sizeof(PCXHEAD), 1, outFile);

	/*** Write image data ***/
	for ( i=(int)uHeight-1; i>=0; --i)
	{
		if (! WritePCXLine(header.byte_per_line, lpBuffer+i*wWidthBytes, outFile))
		{
			fclose(outFile);
			GlobalUnlock(hDIB);
			GlobalFree(hDIB);
			return FALSE;
		}
	}

	/*** Write the palette data ***/
	fputc(0x0c, outFile);
	fwrite((char *)palette, 1, sizeof(palette), outFile);

	// clear & close
	fclose(outFile);
	GlobalUnlock(hDIB);
	GlobalFree(hDIB);

	return TRUE;
}