复件 freedirectdraw.cpp

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// FreeDirectDraw.cpp : Implementation of CFreeDirectDraw
#include "stdafx.h"
#include "FreeDirectX.h"
#include "FreeDirectDraw.h"

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////开始工具函数区/////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/*---------------------------------------------------------------------------------
功能：创建调色板
说明：
返回：成功，0；失败，其它正数值
---------------------------------------------------------------------------------*/
int CFreeDirectDraw::CreatePalatte()
{
	memset( &m_palatte_entry, 0, sizeof( PALETTEENTRY ) * MAX_PALETTE_COLORS );

	for( int i = 1; i < MAX_PALETTE_COLORS; i++ )
	{
		if( i < 64 )
		{
			m_palatte_entry[i].peRed = i * 4;
		}
		else if( i >= 64 && i < 128 )
		{
			m_palatte_entry[i].peGreen = ( i - 64 ) * 4;
		}
		else if( i >= 128 && i > 192 )
		{
			m_palatte_entry[i].peBlue = ( i - 128 ) * 4;
		}
		else
		{
			m_palatte_entry[i].peRed =
			m_palatte_entry[i].peRed =
			m_palatte_entry[i].peRed = ( i - 192 ) * 4;
		}

		m_palatte_entry[i].peFlags = PC_NOCOLLAPSE;
	}

	m_palatte_entry[0].peRed	= 0;
	m_palatte_entry[0].peGreen	= 0;
	m_palatte_entry[0].peBlue	= 0;
	m_palatte_entry[0].peFlags	= PC_NOCOLLAPSE;
	m_palatte_entry[255].peRed	= 255;
	m_palatte_entry[255].peGreen= 255;
	m_palatte_entry[255].peBlue	= 255;
	m_palatte_entry[255].peFlags= PC_NOCOLLAPSE;



	HRESULT hr;

	hr = m_dd->CreatePalette(DDPCAPS_8BIT | DDPCAPS_INITIALIZE | DDPCAPS_ALLOW256,m_palatte_entry,&m_palette,NULL);

	if( hr != DD_OK )
	{
		return 1;
	}

	hr = m_prim_surface->SetPalette( m_palette );

	if( hr != DD_OK )
	{
		return 2;
	}

	return 0;
}

/*---------------------------------------------------------------------------------
功能：剪切页面
说明：
返回：成功，0；失败，其它正数值
---------------------------------------------------------------------------------*/
int CFreeDirectDraw::SetClipper(LPDIRECTDRAWSURFACE7 lpdds, int nNum, LPRECT clip_list )
{
	LPDIRECTDRAWCLIPPER		lp_clip		= NULL;

	int						nIndex;
	LPRGNDATA				region;

	if( FAILED(m_dd->CreateClipper(0, &lp_clip, NULL)) )
	{
		return 1;
	}

	region = new RGNDATA[ sizeof(RGNDATAHEADER) + nNum * sizeof( RECT ) ];

	memcpy(region->Buffer,clip_list,sizeof(RECT)*nNum);

	region->rdh.dwSize			= sizeof( RGNDATAHEADER );
	region->rdh.iType			= RDH_RECTANGLES;
	region->rdh.nCount			= nNum;
	region->rdh.nRgnSize		= nNum * sizeof( RECT );
	region->rdh.rcBound.left	= 6400;
	region->rdh.rcBound.top		= 6400;
	region->rdh.rcBound.right	= -6400;
	region->rdh.rcBound.bottom	= -6400;

	for( nIndex = 0; nIndex < nNum; nIndex++ )
	{
		if( region->rdh.rcBound.left > clip_list[nIndex].left )
		{
			region->rdh.rcBound.left = clip_list[nIndex].left;
		}

		if( region->rdh.rcBound.top > clip_list[nIndex].top )
		{
			region->rdh.rcBound.top = clip_list[nIndex].top;
		}

		if( region->rdh.rcBound.right < clip_list[nIndex].right )
		{
			region->rdh.rcBound.right = clip_list[nIndex].right;
		}

		if( region->rdh.rcBound.bottom < clip_list[nIndex].bottom )
		{
			region->rdh.rcBound.bottom = clip_list[nIndex].bottom;
		}
	}

	if( FAILED( lp_clip->SetClipList( region, 0 ) ) )
	{
		delete [] region ;

		return 2;
	}

	if( FAILED( lpdds->SetClipper( lp_clip ) ))
	{
		delete [] region ;

		return 3;
	}

	delete [] region ;

	m_clipper = lp_clip;

	return 0;
}

/*---------------------------------------------------------------------------------
功能：更新调色板内容
说明：
返回：成功，0；失败，其它数值
---------------------------------------------------------------------------------*/
int CFreeDirectDraw::UpdatePalette(PALETTEENTRY* lp_palette_entry)
{
	memcpy( m_palatte_entry, lp_palette_entry, sizeof( PALETTEENTRY ) * MAX_PALETTE_COLORS );

	if ( FAILED( m_palette->SetEntries( 0, 0, MAX_PALETTE_COLORS, m_palatte_entry ) ) )
	{
		return 1;
	}

	return 0;
}

/*---------------------------------------------------------------------------------
功能：翻转位图
说明：
返回：成功，0；失败，其它数值
---------------------------------------------------------------------------------*/
int CFreeDirectDraw::Flip_Bitmap( BITMAP_FILE_PTR lp_bitmap )
{
	if( lp_bitmap == NULL )
	{
		return 1;
	}

	if( lp_bitmap->m_mem_buf == NULL )
	{
		return 2;
	}

	//如果位图高度是负数，就不用反转了
	if( lp_bitmap->m_info_head.biHeight < 0 )
	{
		return 0;
	}

	//////////////////////////////////////////////////////////////////

	int		nPitch;
	int		nWidth,nHeight,nHalfHeight;
	int 	y,src_pos,dest_pos;
	UCHAR*	temp_buf,*buf;

	nWidth		= lp_bitmap->m_info_head.biWidth;
	nHeight		= lp_bitmap->m_info_head.biHeight;
	nHalfHeight	= nHeight / 2;

	nPitch		= nWidth * lp_bitmap->m_info_head.biBitCount / 8;

	buf			= lp_bitmap->m_mem_buf;
	temp_buf	= new UCHAR[nPitch];

	//反转图像
	for( y = 0; y < nHalfHeight; y++ )
	{
		src_pos	= nPitch * y;
		dest_pos= nPitch * ( nHeight - 1 - y );

		memcpy( temp_buf, buf + src_pos, nPitch );
		memcpy( buf + src_pos, buf + dest_pos, nPitch );
		memcpy( buf + dest_pos, temp_buf, nPitch );
	}

	delete [] temp_buf;

	temp_buf	= NULL;

	return 0;
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////开始工具函数区/////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////

/*---------------------------------------------------------------------------------
功能：初始化DirectDraw
说明：
返回：成功，0；失败，其它正数值
---------------------------------------------------------------------------------*/
STDMETHODIMP CFreeDirectDraw::Init(ULONG hWnd, int nWidth, int nHeight, int nBit)
{
	m_h_wnd		= (HWND)hWnd;

	m_n_bit		= nBit;
	m_n_width	= nWidth;
	m_n_height	= nHeight;

	/////////////////////////////////////////////////////////

	HRESULT					result;
	DDSCAPS2				caps;
	DDSURFACEDESC2			desc;

	result = DirectDrawCreateEx( NULL, (void**)&m_dd, IID_IDirectDraw7, NULL );

	if( result != DD_OK )
	{
		m_log.SaveMessage("创建DirectDraw对象失败！");

		return 1;
	}


	result = m_dd->SetCooperativeLevel(m_h_wnd,DDSCL_EXCLUSIVE | DDSCL_FULLSCREEN | DDSCL_ALLOWREBOOT | DDSCL_ALLOWMODEX 

);

	if( result != DD_OK )
	{
		m_log.SaveMessage( "设置协调层级失败！" );

		return 2;
	}


	result = m_dd->SetDisplayMode( m_n_width, m_n_height, m_n_bit, 0, 0 );

	if( result != DD_OK )
	{
		m_log.SaveMessage( "设置显示模式失败！" );

		return 3;
	}

	//创建主页面
	INIT_STRUCT( desc );
	desc.dwFlags			= DDSD_CAPS | DDSD_BACKBUFFERCOUNT;
	desc.dwBackBufferCount  = 1;
	desc.ddsCaps.dwCaps		= DDSCAPS_PRIMARYSURFACE | DDSCAPS_COMPLEX | DDSCAPS_FLIP;

	result = m_dd->CreateSurface( &desc, &m_prim_surface, NULL );

	if( result != DD_OK )
	{
		m_log.SaveMessage( "创建主页面失败！" );

		return 4;
	}

	//副缓冲区
	memset( &caps, 0, sizeof( caps ) );

	caps.dwCaps = DDSCAPS_BACKBUFFER;

	result = m_prim_surface->GetAttachedSurface( &caps, &m_back_surface );

	if( result != DD_OK )
	{
		m_log.SaveMessage( "创建次页面失败！" );

		return 5;
	}

	//如果是8bit，就要创建调色板
	if( m_n_bit == 8 )
	{
		if(CreatePalatte() != 0)
		{
			m_log.SaveMessage( "创建调色板失败！" );

			return 6;
		}
	}

	//设置剪切区
	RECT rect[] = {0, 0, m_n_width, m_n_height };
	if( SetClipper( m_back_surface, 1, rect ) != 0 )
	{
		m_log.SaveMessage("设置剪切区失败！");

		return 7;
	}

	m_log.SaveMessage( "DirectDraw组件初始化成功！" );

	return 0;	
}

/*---------------------------------------------------------------------------------
功能：清除DirectDraw资源
说明：
返回：成功，0；失败，其它正数值
---------------------------------------------------------------------------------*/
STDMETHODIMP CFreeDirectDraw::UnInit()
{
	SAFE_RELEASE( m_clipper );
	SAFE_RELEASE( m_palette );
	SAFE_RELEASE( m_back_surface );
	SAFE_RELEASE( m_prim_surface );
	SAFE_RELEASE( m_dd );

	return 0;
}

/*---------------------------------------------------------------------------------
功能：剪切页面
说明：
返回：成功，0；失败，其它正数值
---------------------------------------------------------------------------------*/
STDMETHODIMP CFreeDirectDraw::SetClipper(int nNum, ULONG lp_rect)
{
	int nRet;

	nRet = SetClipper( m_back_surface, nNum, (LPRECT)lp_rect );

	return nRet;
}

/*---------------------------------------------------------------------------------
功能：更新调色板
说明：
返回：成功，0；失败，其它正数值
---------------------------------------------------------------------------------*/
STDMETHODIMP CFreeDirectDraw::UpdatePalette(ULONG lp_palette_entry)
{
	int nRet;

	nRet = UpdatePalette( (PALETTEENTRY*)lp_palette_entry );

	return nRet;
}

/*---------------------------------------------------------------------------------
功能：直接在副页面上画随机的点-------8位
说明：
返回：成功，0；失败，其它正数值
---------------------------------------------------------------------------------*/
STDMETHODIMP CFreeDirectDraw::DrawRandPixel_08(int nCount)
{
	int x,y;

	int				mempitch	= 0;
	unsigned char*	lp_buf		= NULL;

	HRESULT hr;