staticex.cpp

This paper provides video capture and category CcaptureVideo example, in Win2K DirectX9 SDK VC6 thro

// StaticEx.cpp : implementation file
//

#include "stdafx.h"
#include "Console.h"
#include "StaticEx.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CStaticEx
int CStaticEx::m_staticCounts = 0;           
BOOL CStaticEx::m_bPalInited = FALSE;
CPalette CStaticEx::m_palFor8Bit;

CStaticEx::CStaticEx()
{
	//缺省构造函数保证CG300卡不被初始化
	m_hCG300 = NULL;
	m_hDDraw = NULL;
}
CStaticEx::CStaticEx(int iNum)
{

	//判断卡号是否越界
	if ((iNum < 1) || (iNum > MAX_CARD_NUMBER))
	{
		m_hCG300 = NULL;
		m_bOpen = FALSE;
		m_iNum = 0;
	}
	else
	{
		m_hCG300 = BeginCG300(iNum);              //打开图像卡 !linca
		if ((m_hCG300 == 0) || (m_hCG300 == 1) || (m_hCG300 == 2) ||
			(m_hCG300 == 3) || (m_hCG300 == 0xffffffff))
		{
			m_hCG300 = NULL;
			m_bOpen = FALSE;
			m_iNum = 0;
		}
		else
		{
			m_bOpen = TRUE;
			m_iNum = iNum;
		}

	}
	
	m_hDDraw = NULL;
	m_iShowMode = CLIP;
	m_iVideoStand = PAL;
	m_iFormMode = FRAME;
	m_iStoreFmt = FRAME;
	//初始化回放显示参数
	m_iCurFrame = 0;
	m_dwLineAddrOffset = 0;
	m_iImageSize = 0;
	m_iFrameNum = 0;

	m_pbminfo = NULL;

	//m_iOpd = -1;
	m_staticCounts++;
}

CStaticEx::~CStaticEx()
{
	//关闭DDraw动态库
	CloseDDraw(m_hDDraw);
	//关闭图像卡
	
	
	CG300Capture(m_hCG300, FALSE);
	
	EndCG300(m_hCG300);
	
}


BEGIN_MESSAGE_MAP(CStaticEx, CStatic)
	//{{AFX_MSG_MAP(CStaticEx)
		// NOTE - the ClassWizard will add and remove mapping macros here.
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CStaticEx message handlers
/**********************************************************
// 函数SetDispWindow
// 输入参数 
//			BOOL bEnable					是否在设置输入和显示窗口之前停止采集															
// 说明
//		当CG300处于采集到显卡时，若重新设置输入输出窗口，
		驱动程序会先停止采集再设置，bEnable ＝ FALSE.
//		当CG300处于采集到内存时，每次设置输入输出窗口，
		需要停止采集再设置，bEnable ＝ TRUE.										
**********************************************************/
BOOL CStaticEx::SetDispWindow(BOOL bEnable)
{
		
	CSize size;
	//根据视频制式确定默认最大输入窗口
	switch(m_iVideoStand)
	{
	case PAL:
		size.cx = 768;	size.cy = 576;
		break;
	case NTSC:
		size.cx = 640;	size.cy = 480;
		break;
	default:
		size.cx = 768;	size.cy = 576;
		break;
	}

	//if (bEnable == FALSE)
//	{
//		CG300Capture(m_hCG300, FALSE);
//	}
	
	int iHeight, iWidth;
	iWidth = m_rectVideo.Width();
	if (m_iFormMode == FRAME)
	{
		iHeight = m_rectVideo.Height();
	}
	else
	{
		iHeight = m_rectVideo.Height() * 2;			//场方式特殊处理
		if (iHeight > 576)				//高度最大不能超过576
		{
			iHeight = 576;
		}
	}
	//防止宽高 <= 1 的异常情况
	if (iHeight <= 1)
	{
		iHeight = 100;
	}
	if (iWidth <= 1 )
	{
		iWidth = 100;
	}

	if (m_iShowMode == 0)
	{
		//比例模式
		CG300SetInpVideoWindow(m_hCG300, 0, 0, size.cx, size.cy);
	}
	else
	{
		//裁减模式
	CG300SetInpVideoWindow(m_hCG300, 0, 0, iWidth, iHeight);
	}

	CG300SetDispWindow(m_hCG300, m_rectVideo.left-3, m_rectVideo.top-3, 
		               iWidth, iHeight);
	
	
	return TRUE;
}

//这个函数不知为何不能用，我用了另一个方法，重载了OnCreate（），解决了问题，真聪明阿
int CStaticEx::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CStatic::OnCreate(lpCreateStruct) == -1)
		return -1;

	// TODO: Add your specialized creation code here
	//获取桌面位深度
	CDC* pDC = GetDC();
	m_iScrnBitsPixel = pDC->GetDeviceCaps(PLANES) * pDC->GetDeviceCaps(BITSPIXEL); //这里获得显卡的颜色数
	//由位深度转换到采集数据格式
	m_iDataFormat = GetSpaceFormat(m_iScrnBitsPixel);
	//设置图像卡输出的图像数据格式
	CG300SetColorSpace(m_hCG300, m_iDataFormat);
	//创建各播放器共用的调色板
	if (m_bPalInited == FALSE)
	{
		LOGPALETTE *lpLogPal;
		BYTE buffer[2048];
		lpLogPal = (LOGPALETTE *)buffer;
		lpLogPal->palNumEntries = pDC->GetDeviceCaps(SIZEPALETTE);
		lpLogPal->palVersion = 0x300;

		for (int k = 0; k < (int)(lpLogPal->palNumEntries); k++)
		{
			//创建灰度调色板
			lpLogPal->palPalEntry[k].peRed = (BYTE)k + 10;
			lpLogPal->palPalEntry[k].peGreen = (BYTE)k + 10;
			lpLogPal->palPalEntry[k].peBlue = (BYTE)k + 10;
			lpLogPal->palPalEntry[k].peFlags = 0;
		}

		m_palFor8Bit.CreatePalette(lpLogPal);
		
		m_bPalInited = TRUE;
	}

	ReleaseDC(pDC);

	//从INI文件读取相应键值，并初始化各控制参数
	CString str;
	str.Format("Source%d", m_iNum);
	m_iSource     = GetPrivateProfileInt( "Video Parameter", str, 1, "dhvcard.ini" );
	str.Format("Brightness%d", m_iNum);
	m_iBrightness = GetPrivateProfileInt( "Video Parameter", str, 128, "dhvcard.ini" );
	str.Format("Contrast%d", m_iNum);
	m_iContrast   = GetPrivateProfileInt( "Video Parameter", str, 128, "dhvcard.ini" );
	str.Format("Hue%d", m_iNum);
	m_iHue        = GetPrivateProfileInt( "Video Parameter", str, 128, "dhvcard.ini" );
	str.Format("Saturation%d", m_iNum);
	m_iSaturation = GetPrivateProfileInt( "Video Parameter", str, 128, "dhvcard.ini" );
	str.Format("LoPLLFreq%d", m_iNum);
	m_iPll        = GetPrivateProfileInt("Video Parameter", str, 245, "dhvcard.ini");
	str.Format("CryOSC%d", m_iNum);
    m_iCryc       = GetPrivateProfileInt( "Video Parameter", str, 1, "dhvcard.ini" );
	//设置默认视频源路和图像属性
	CG300SetADParam(m_hCG300, AD_SOURCE, m_iSource);
	CG300SetADParam(m_hCG300, AD_BRIGHTNESS, m_iBrightness);
	CG300SetADParam(m_hCG300, AD_CONTRAST, m_iContrast);
	CG300SetADParam(m_hCG300, AD_HUE, m_iHue);
	CG300SetADParam(m_hCG300, AD_SATURATION, m_iSaturation);
	//设置图像卡默认晶振
	CG300SelectCryOSC(m_hCG300, m_iCryc);
	
	//调用动态库获取DirectDraw支持
	m_hDDraw = OpenDDraw(m_hCG300, GetSafeHwnd());

	return 0;
}
BYTE CStaticEx::GetSpaceFormat(int iBitsPixel) const
{
	BYTE bySpaceFormat;
	switch(iBitsPixel)
	{
	case 8:
		bySpaceFormat = Limited8Bit;
		break;
	case 16:
		bySpaceFormat = RGB565;
		break;
	case 24:
		bySpaceFormat = RGB888;
		break;
	case 32:
		bySpaceFormat = RGB8888;
		break;
	}
	
	return bySpaceFormat;
}

int CStaticEx::OnCreate()//这是我重载的OnCreate函数
{

// TODO: Add your specialized creation code here
	//获取桌面位深度
	CDC* pDC = GetDC();
	m_iScrnBitsPixel = pDC->GetDeviceCaps(PLANES) * pDC->GetDeviceCaps(BITSPIXEL); //这里获得显卡的颜色数
	//由位深度转换到采集数据格式
	m_iDataFormat = GetSpaceFormat(m_iScrnBitsPixel);
	//设置图像卡输出的图像数据格式
	CG300SetColorSpace(m_hCG300, m_iDataFormat);
	//创建各播放器共用的调色板
	if (m_bPalInited == FALSE)
	{
		LOGPALETTE *lpLogPal;
		BYTE buffer[2048];
		lpLogPal = (LOGPALETTE *)buffer;
		lpLogPal->palNumEntries = pDC->GetDeviceCaps(SIZEPALETTE);
		lpLogPal->palVersion = 0x300;

		for (int k = 0; k < (int)(lpLogPal->palNumEntries); k++)
		{
			//创建灰度调色板
			lpLogPal->palPalEntry[k].peRed = (BYTE)k + 10;
			lpLogPal->palPalEntry[k].peGreen = (BYTE)k + 10;
			lpLogPal->palPalEntry[k].peBlue = (BYTE)k + 10;
			lpLogPal->palPalEntry[k].peFlags = 0;
		}

		m_palFor8Bit.CreatePalette(lpLogPal);
		
		m_bPalInited = TRUE;
	}

	ReleaseDC(pDC);

	//从INI文件读取相应键值，并初始化各控制参数
	CString str;
	str.Format("Source%d", m_iNum);
	m_iSource     = GetPrivateProfileInt( "Video Parameter", str, 1, "dhvcard.ini" );
	str.Format("Brightness%d", m_iNum);
	m_iBrightness = GetPrivateProfileInt( "Video Parameter", str, 128, "dhvcard.ini" );
	str.Format("Contrast%d", m_iNum);
	m_iContrast   = GetPrivateProfileInt( "Video Parameter", str, 128, "dhvcard.ini" );
	str.Format("Hue%d", m_iNum);
	m_iHue        = GetPrivateProfileInt( "Video Parameter", str, 128, "dhvcard.ini" );
	str.Format("Saturation%d", m_iNum);
	m_iSaturation = GetPrivateProfileInt( "Video Parameter", str, 128, "dhvcard.ini" );
	str.Format("LoPLLFreq%d", m_iNum);
	m_iPll        = GetPrivateProfileInt("Video Parameter", str, 245, "dhvcard.ini");
	str.Format("CryOSC%d", m_iNum);
    m_iCryc       = GetPrivateProfileInt( "Video Parameter", str, 1, "dhvcard.ini" );
	//设置默认视频源路和图像属性
	CG300SetADParam(m_hCG300, AD_SOURCE, m_iSource);
	CG300SetADParam(m_hCG300, AD_BRIGHTNESS, m_iBrightness);
	CG300SetADParam(m_hCG300, AD_CONTRAST, m_iContrast);
	CG300SetADParam(m_hCG300, AD_HUE, m_iHue);
	CG300SetADParam(m_hCG300, AD_SATURATION, m_iSaturation);
	//设置图像卡默认晶振
	CG300SelectCryOSC(m_hCG300, m_iCryc);
	
	//调用动态库获取DirectDraw支持
	m_hDDraw = OpenDDraw(m_hCG300, GetSafeHwnd());

	return 0;
}

BOOL CStaticEx::CaptureToVGA(BOOL bEnable)
{
	CG300Capture(m_hCG300, bEnable);      
	
	SetWatchWnd(m_hDDraw, bEnable);         //菜单窗口更新 linca
											//这两个函数被封装，看不到源代码

	return TRUE;

}
/****************************************************
//	函数 SetPlayBackParam
//	输入参数：
//			
//  说明：
//			设置回放参数
*****************************************************/
BOOL CStaticEx::SetPlayBackParam(DWORD dwLineAddrOffset, int iFrameNum, 
				int iImageSize, CSize szSource)
{
	BOOL bVal;
	if (dwLineAddrOffset >=0 && iFrameNum >= 0 && 
		iImageSize >= 0 && szSource.cx >= 0 && szSource.cy >= 0)
	{
		m_dwLineAddrOffset = dwLineAddrOffset;
		m_iFrameNum = iFrameNum;
		m_iImageSize = iImageSize;
		m_szSource = szSource;
		m_iCurFrame = 0;       //初始化当前帧为0
		
		int iBMBit;
		if (m_iDataFormat == Limited8Bit || m_iDataFormat == All8Bit)
		{
			iBMBit = 8;
		}
		else
		{
			iBMBit = 24;
		}
		bVal = SetBitmapInfo(m_szSource, iBMBit);
	}
	else
	{
		bVal = FALSE;
	}

	return bVal;
}
BOOL CStaticEx::Display()
{
    CRect rect;
	rect = m_rectVideo;
	ScreenToClient(rect);

//	char *lpDest = new char[768 * 576 * 4];
	char *lpDest = new char[m_iImageSize];
	//读取当前帧到缓冲区
	DWORD dwMemSize, dwPhysMem, dwHandle, dwLineAddr;
	StaticMemAlloc(&dwMemSize, &dwPhysMem, &dwHandle, &dwLineAddr);
	dwMemSize *= 4 * 1024;
	CG300ReadFromMem(m_hCG300, (char *)dwLineAddr + m_dwLineAddrOffset,
						m_iImageSize , m_iCurFrame, lpDest);
	/*HCG300 hcg300; 图像卡句柄。 
      char *lpSourBuf; 所申请到的内存起始线性地址。 
      DWORD dwMemSize; 内存的大小。 
      WORD Number; 所要读取的图像的编号，从第0开始。 
      char *lpDestBuf; 存放图像数据缓冲区指针，由用户分配 */
	HDC hdc = ::GetDC(m_hWnd);
	SetStretchBltMode(hdc, COLORONCOLOR);
	//选取并实现灰度调色板
	if (m_iDataFormat == Limited8Bit || m_iDataFormat == All8Bit)
	{
		SelectPalette(hdc, (HPALETTE)CStaticEx::m_palFor8Bit.GetSafeHandle(), FALSE);
		RealizePalette(hdc);
	}
	
	StretchDIBits(hdc,rect.left, rect.top,rect.Width(), rect.Height(),0, 0,
				m_szSource.cx, m_szSource.cy, lpDest, m_pbminfo, 
				DIB_RGB_COLORS, SRCCOPY);
	//	CSize m_szSource;	数据源宽高
	

	::ReleaseDC(m_hWnd, hdc);
	
	delete []lpDest;
	
	return TRUE;
}
/****************************************************
//	函数 SetBitmapInfo
//	输入参数：
//			
//  说明：
//			根据size和IBMBit设置BITMAPINFO结构
*****************************************************/
BOOL CStaticEx::SetBitmapInfo(const CSize &size, int iBMBit)
{
	if(iBMBit != 8)
	{
		iBMBit = 24;
	}

	m_pbminfo = (BITMAPINFO *)m_byBuffer;
	m_pbminfo->bmiHeader.biBitCount = iBMBit;
	if (iBMBit == 8)
	{
		m_pbminfo->bmiHeader.biClrImportant = 256;
		m_pbminfo->bmiHeader.biClrUsed = 256;
	}
	else
	{
		m_pbminfo->bmiHeader.biClrImportant = 0;
		m_pbminfo->bmiHeader.biClrUsed = 0;
	}
	
	m_pbminfo->bmiHeader.biCompression = BI_RGB;
	m_pbminfo->bmiHeader.biHeight = size.cy;
	m_pbminfo->bmiHeader.biPlanes = 1;
	m_pbminfo->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
	m_pbminfo->bmiHeader.biSizeImage = 0;
	m_pbminfo->bmiHeader.biWidth = size.cx;
	m_pbminfo->bmiHeader.biXPelsPerMeter = 0;
	m_pbminfo->bmiHeader.biYPelsPerMeter = 0;
	if (iBMBit == 8)
	{
		for( int k = 0; k < 256; ++k)
		{
			//设置灰度调色板
			m_pbminfo->bmiColors[k].rgbBlue = (BYTE)k;
			m_pbminfo->bmiColors[k].rgbGreen = (BYTE)k;
			m_pbminfo->bmiColors[k].rgbRed = (BYTE)k;
			m_pbminfo->bmiColors[k].rgbReserved = 0;
		}
	}

	return TRUE;
}