📄 gifshow.cpp
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#include "stdafx.h"
#include "GifShow.h"
DWORD WINAPI ThreadFunc(CGIFShow* ptr)
{
ptr->Play1();
return 0;
}
void CGIFShow::Play()
{
HANDLE hThread;
DWORD ThreadId;
if(m_hWndHDC==0)return ;
if(m_pcGif==0)return;
if(m_EndRun==5)return;
m_pcGifTrack=m_pcGif;
m_iTotalReadByte=0;
m_EndRun=5;
hThread=CreateThread(NULL,0,(unsigned long(_stdcall*)(void*))ThreadFunc,this,0,&ThreadId);
CloseHandle(hThread);
return;
}
BOOL CGIFShow::Play1(void)
{
HDC hDC,hMemDC,hMemDC1,hPauseMemDC;
HBITMAP hOldBitmap,hOldBitmap1,hBitmap,hPreviousBitmap,hPauseBitmap;
DWORD systimer1,systimer2,speed;
BOOL PauseShow = FALSE;
hDC = m_hWndHDC;
hMemDC = ::CreateCompatibleDC(hDC);
hMemDC1 = ::CreateCompatibleDC(hDC);
hPauseMemDC = ::CreateCompatibleDC(hDC);
m_hDC = hDC;
hPreviousBitmap = 0;
while(m_bLockBitmap)
{
}
m_bLockBitmap = TRUE;
if(m_hRedrawBitmap != 0)
{
DeleteObject(m_hRedrawBitmap);
}
m_hRedrawBitmap = ::CreateCompatibleBitmap(hDC,m_iGifWidth,m_iGifHeight);
hOldBitmap1 = (HBITMAP)SelectObject(hMemDC1,m_hRedrawBitmap);
hPauseBitmap = ::CreateCompatibleBitmap(hDC,m_iGifWidth,m_iGifHeight);
SelectObject(hPauseMemDC,hPauseBitmap);
::BitBlt(hMemDC1,0,0,m_iGifWidth,m_iGifHeight,hDC,m_nPosX,m_nPosY,SRCCOPY);
SelectObject(hMemDC1,hOldBitmap1);
m_bLockBitmap = FALSE;
m_iDisposalMethod = DISPOSAL_NOT;
while(1 != m_EndRun)
{
systimer2=systimer1 = GetTickCount();
while(m_bLockBitmap)
{
}
m_bLockBitmap = TRUE;
hOldBitmap1 = (HBITMAP)SelectObject(hMemDC1,m_hRedrawBitmap);
switch(m_iDisposalMethod)
{
case DISPOSAL_NO:
break;
case DISPOSAL_NOT:
break;
case DISPOSAL_RESTBACK:
case DISPOSAL_RESTORE:
hOldBitmap = (HBITMAP)SelectObject(hMemDC,hPreviousBitmap);
::BitBlt(hMemDC1,m_iLeft,m_iTop,m_iWidth,m_iHeight,hMemDC,0,0,SRCCOPY);
SelectObject(hMemDC,hOldBitmap);
DeleteObject(hPreviousBitmap);
hPreviousBitmap = 0;
break;
}
m_iDisposalMethod = DISPOSAL_NO;
if(!PauseShow)
{
hBitmap=NextImage();
switch(m_iDisposalMethod)
{
case DISPOSAL_NO:
break;
case DISPOSAL_NOT:
break;
case DISPOSAL_RESTBACK:
case DISPOSAL_RESTORE:
hPreviousBitmap = ::CreateCompatibleBitmap(hDC,m_iWidth,m_iHeight);
hOldBitmap = (HBITMAP)SelectObject(hMemDC,hPreviousBitmap);
::BitBlt(hMemDC,0,0,m_iWidth,m_iHeight,hMemDC1,m_iLeft,m_iTop,SRCCOPY);
SelectObject(hMemDC,hOldBitmap);
break;
}
hOldBitmap = (HBITMAP)SelectObject(hMemDC,hBitmap);
if(m_bTransparentIndex)
{
HBITMAP bmAndBack, bmAndObject;
HBITMAP bmBackOld, bmObjectOld;
HDC hdcBack, hdcObject;
COLORREF cColor;
hdcBack = ::CreateCompatibleDC(hDC);
hdcObject = ::CreateCompatibleDC(hDC);
bmAndBack = CreateBitmap(m_iWidth,m_iHeight,1,1,NULL);
bmAndObject = CreateBitmap(m_iWidth,m_iHeight,1,1,NULL);
bmBackOld = (HBITMAP)SelectObject(hdcBack,bmAndBack);
bmObjectOld = (HBITMAP)SelectObject(hdcObject,bmAndObject);
cColor = SetBkColor(hMemDC,m_TransparentColor);
::BitBlt(hdcObject,0,0,m_iWidth,m_iHeight,hMemDC,0,0,SRCCOPY);
SetBkColor(hMemDC,cColor);
::BitBlt(hdcBack,0,0,m_iWidth,m_iHeight,hdcObject,0,0,NOTSRCCOPY);
::BitBlt(hMemDC1,m_iLeft,m_iTop,m_iWidth,m_iHeight,hdcObject,0,0,SRCAND);
::BitBlt(hMemDC,0,0,m_iWidth,m_iHeight,hdcBack,0,0,SRCAND);
::BitBlt(hMemDC1,m_iLeft,m_iTop,m_iWidth,m_iHeight,hMemDC,0,0,SRCPAINT);
DeleteObject(SelectObject(hdcBack,bmBackOld));
DeleteObject(SelectObject(hdcObject,bmObjectOld));
DeleteDC(hdcBack);
DeleteDC(hdcObject);
}
else
{
::BitBlt(hMemDC1,m_iLeft,m_iTop,m_iWidth,m_iHeight,hMemDC,0,0,SRCCOPY);
}
SelectObject(hMemDC,hOldBitmap);
DeleteObject(hBitmap);
::BitBlt(hDC,m_nPosX,m_nPosY,m_iGifWidth,m_iGifHeight,hMemDC1,0,0,SRCCOPY);
::BitBlt(hPauseMemDC,0,0,m_iGifWidth,m_iGifHeight,hMemDC1,0,0,SRCCOPY);
}
else
{
::BitBlt(hDC,m_nPosX,m_nPosY,m_iGifWidth,m_iGifHeight,hPauseMemDC,0,0,SRCCOPY);
}
SelectObject(hMemDC1,hOldBitmap1);
m_bLockBitmap = FALSE;
if(0 != m_iDelayTime)
speed = m_iDelayTime * 10;
else
speed=m_dwSpeed;
while((1 != m_EndRun)&&(speed > systimer2 - systimer1))
{
Sleep(10);
systimer2 = GetTickCount();
}
PauseShow = m_bPause;
}
if(hPreviousBitmap != 0)
DeleteObject(hPreviousBitmap);
DeleteDC(hMemDC);
DeleteDC(hMemDC1);
//::ReleaseDC(hDC);
m_EndRun = 2;
return TRUE;
}
void CGIFShow::Stop()
{
if(m_EndRun != 5)
return;
m_EndRun = 1;
while(m_EndRun != 2)
{
}
return;
}
CGIFShow::CGIFShow(HDC pWnd)
{
m_hWndHDC=pWnd;
m_bPause=FALSE;
m_bAutoStart=TRUE;
m_bAutoSize1=TRUE;
m_bEmbed=FALSE;
m_pcGlobalColorTable=0;
m_pcGif=0;
m_iGifSize=0;
m_iGlobalColorSize=0;
m_bTransparentIndex=FALSE;
m_iDelayTime=0;
m_EndRun=0;
m_dwSpeed=50;
m_hRedrawBitmap=0;
m_bLockBitmap=FALSE;
flag=0;
m_nPosX=0;
m_nPosY=0;
wcscpy(filename,_T(""));
m_bRunMode=1;
m_bGlass=FALSE;
}
CGIFShow::~CGIFShow(void)
{
Stop();
if(m_hRedrawBitmap!=0)
DeleteObject(m_hRedrawBitmap);
if(m_pcGlobalColorTable!=NULL)
delete[] m_pcGlobalColorTable;
if(m_pcGif!=NULL)
delete[] m_pcGif;
}
BOOL CGIFShow::Load(LPCTSTR filename)
{
HANDLE hFile;
DWORD size,size1,readbyte;
BYTE temp[13];
if(m_bEmbed)
return FALSE;
Stop();
if(m_pcGlobalColorTable!=NULL)
delete[] m_pcGlobalColorTable;
if(m_pcGif!=NULL)
delete[] m_pcGif;
if(m_hRedrawBitmap!=0)
{
DeleteObject(m_hRedrawBitmap);
m_hRedrawBitmap=0;
}
m_pcGlobalColorTable=m_pcGif=0;
m_iTotalReadByte=0;
m_iGifSize=m_iGlobalColorSize=0;
hFile = CreateFile(filename,GENERIC_READ,FILE_SHARE_READ,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
if(INVALID_HANDLE_VALUE==hFile)
return FALSE;
size=GetFileSize(hFile,&size1);
if(size==0xFFFFFFFF)
{
CloseHandle(hFile);
return FALSE;
}
ReadFile(hFile,temp,13,&readbyte,NULL);
if((readbyte!=13)||((temp[0]!='G')||(temp[1]!='I')||
(temp[2]!='F')||(temp[3]!='8')||((temp[4]!='7')&&
(temp[4]!='9'))||(temp[5]!='a')))
{
CloseHandle(hFile);
return FALSE;
}
m_iGifWidth=*(temp+6);
m_iGifHeight=*(temp+8);
m_iBackgroundColor=temp[11];
if(temp[10]&0x80)
{
m_iGlobalColorSize=0x01<<((temp[10]&0x07)+1);
m_pcGlobalColorTable=new BYTE[3*m_iGlobalColorSize];
ReadFile(hFile,m_pcGlobalColorTable,3*m_iGlobalColorSize,&readbyte,NULL);
if(readbyte!=(DWORD)3*m_iGlobalColorSize)
{
delete[] m_pcGlobalColorTable;
m_pcGlobalColorTable=0;
m_iGlobalColorSize=0;
CloseHandle(hFile);
return FALSE;
}
}
m_iGifSize=size-3*m_iGlobalColorSize-12;
m_pcGifTrack=m_pcGif=new BYTE[m_iGifSize];
ReadFile(hFile,m_pcGif,m_iGifSize,&readbyte,NULL);
CloseHandle(hFile);
return TRUE;
}
HBITMAP CGIFShow::NextImage(void)
{
if(m_pcGif==NULL)return 0;
label2: if(m_iTotalReadByte>m_iGifSize)
{
m_pcGifTrack=m_pcGif;
m_iTotalReadByte=0;return 0;
}
m_iTotalReadByte++;
switch(*m_pcGifTrack++)
{
case 0x2C:
return TakeIt();
break;
case 0x21:
BYTE cSize;
m_iTotalReadByte++;
switch(*m_pcGifTrack++)
{
case 0xF9:
m_pcGifTrack++;//block size
m_iDisposalMethod=(*m_pcGifTrack)&28;
m_bTransparentIndex=(*m_pcGifTrack++)&1;
m_iDelayTime=*m_pcGifTrack;
m_pcGifTrack+=2;
m_iTransparentIndex=*m_pcGifTrack++;
m_iTotalReadByte+=5;
break;
case 0xFE:
while((cSize=*m_pcGifTrack)!=0)
{
m_pcGifTrack+=cSize+1;
m_iTotalReadByte+=cSize+1;
if(m_iTotalReadByte>m_iGifSize)
return 0;
}
break;
case 0x01:
m_pcGifTrack+=13;
m_iTotalReadByte+=13;
while((cSize=*m_pcGifTrack)!=0)
{
m_pcGifTrack+=cSize+1;
m_iTotalReadByte+=cSize+1;
if(m_iTotalReadByte>m_iGifSize)
return 0;
}
break;
case 0xFF:
m_pcGifTrack+=12;
m_iTotalReadByte+=12;
while((cSize=*m_pcGifTrack)!=0)
{
m_pcGifTrack+=cSize+1;
m_iTotalReadByte+=cSize+1;
if(m_iTotalReadByte>m_iGifSize)
return 0;
}
break;
default:
return FALSE;
}
m_pcGifTrack++;
m_iTotalReadByte++;
if(m_iTotalReadByte>m_iGifSize)
return 0;
goto label2;
break;
case 0x3B:
m_pcGifTrack=m_pcGif;
m_iTotalReadByte=0;
goto label2;
case 0:
goto label2;
default:
return FALSE;
}
}
HBITMAP CGIFShow::TakeIt(void)
{
UINT uLocalColorTableSize;
WORD code,oldcode,code1;
int iFinishCode,iResetCode;
int iPrimaryTableSize,iTableSize;
BITMAPINFOHEADER *bitmapheader;
BYTE *pcColorTable;
BYTE *pcInfo;
GIFTABLE *pcGifTable;
HBITMAP hBitmap;
m_iLeft=*m_pcGifTrack;
m_pcGifTrack+=2;
m_iTop=*m_pcGifTrack;
m_pcGifTrack+=2;
m_iWidth=*m_pcGifTrack;
m_pcGifTrack+=2;
m_iWidth1=((m_iWidth-1)|0x3)+1;
m_iHeight=*m_pcGifTrack;
m_pcGifTrack+=2;
m_cPackedField=*m_pcGifTrack++;
m_iTotalReadByte+=9;
m_iMaxByte=m_iWidth1*m_iHeight;
pcInfo=new BYTE[256*sizeof(RGBQUAD)+sizeof(BITMAPINFOHEADER)+m_iMaxByte+sizeof(GIFTABLE)*4096];
bitmapheader=(BITMAPINFOHEADER*)pcInfo;
pcColorTable=pcInfo+sizeof(BITMAPINFOHEADER);
m_pcBitmap=pcColorTable+256*sizeof(RGBQUAD);
pcGifTable=(GIFTABLE*)(m_pcBitmap+m_iMaxByte);
for(int i=0;i<4096;i++)
pcGifTable[i].previouscode=pcGifTable[i].nextcode=0;
bitmapheader->biSize=sizeof(BITMAPINFOHEADER);
bitmapheader->biWidth=m_iWidth;
bitmapheader->biHeight=-m_iHeight;
bitmapheader->biPlanes=1;
bitmapheader->biBitCount=8;
bitmapheader->biCompression=BI_RGB;
bitmapheader->biSizeImage=0;
bitmapheader->biXPelsPerMeter=0;
bitmapheader->biYPelsPerMeter=0;
bitmapheader->biClrUsed=256;
bitmapheader->biClrImportant=256;
if(m_cPackedField&0x80)
{
uLocalColorTableSize=1;
uLocalColorTableSize<<=(m_cPackedField&7)+1;
if(m_bTransparentIndex)
{
m_TransparentColor=RGB(m_pcGifTrack[m_iTransparentIndex*3],m_pcGifTrack[m_iTransparentIndex*3+1],m_pcGifTrack[m_iTransparentIndex*3+2]);
}
m_iTotalReadByte+=uLocalColorTableSize*3;
for(UINT i=0;i<uLocalColorTableSize;i++)
{
pcColorTable[2]=*m_pcGifTrack++;
pcColorTable[1]=*m_pcGifTrack++;
pcColorTable[0]=*m_pcGifTrack++;
pcColorTable[3]=0;
pcColorTable+=4;
}
}
else
{
BYTE *pcGlobalColor=m_pcGlobalColorTable;
if(m_bTransparentIndex)
{
m_TransparentColor=RGB(pcGlobalColor[m_iTransparentIndex*3],pcGlobalColor[m_iTransparentIndex*3+1],pcGlobalColor[m_iTransparentIndex*3+2]);
}
for(int i=0;i<m_iGlobalColorSize;i++)
{
pcColorTable[2]=*pcGlobalColor++;
pcColorTable[1]=*pcGlobalColor++;
pcColorTable[0]=*pcGlobalColor++;
pcColorTable[3]=0;
pcColorTable+=4;
}
}
m_uPrimaryBitSize=m_uBitSize=(*m_pcGifTrack++);
m_iTotalReadByte++;
iPrimaryTableSize=iTableSize=(1<<m_uBitSize)+2;
iFinishCode=iTableSize-1;
iResetCode=iFinishCode-1;
m_uPrimaryBitSize++;
m_uBitSize++;
m_uRemain=0;
m_cCurentByte=0;
m_uBlockSize=0;
m_uReadByte=1;
m_x=m_y=0;
m_iPass=1;
m_iRow=0;
while((code=GetCode())!=iFinishCode)
{
if(code==iResetCode)
{
m_uBitSize=m_uPrimaryBitSize;
iTableSize=iPrimaryTableSize;
oldcode=GetCode();
if(oldcode>iTableSize)
{
delete[] pcInfo;
return 0;
}
Output((BYTE)oldcode);
continue;
}
if(code<iTableSize) //<code> exist in the string pcGifTable
{
code1=code;
WORD code2=0;
while(code1>=iPrimaryTableSize)
{
pcGifTable[code1].nextcode=code2;
code2=code1;
code1=pcGifTable[code1].previouscode;
if(code1>=code2)
{
delete[] pcInfo;
return 0;
}
}
Output((BYTE)code1);
while(code2!=0)
{
Output(pcGifTable[code2].bit);
code2=pcGifTable[code2].nextcode;
}
pcGifTable[iTableSize].bit=(BYTE)code1;
pcGifTable[iTableSize].previouscode=oldcode;
iTableSize++;
if(iTableSize==(0x0001<<m_uBitSize))
m_uBitSize++;
if(m_uBitSize>12)
m_uBitSize=12;
oldcode=code;
}
else
{
code1=oldcode;
WORD code2=0;
while(code1>=iPrimaryTableSize)
{
pcGifTable[code1].nextcode=code2;
code2=code1;
code1=pcGifTable[code1].previouscode;
if(code1>=code2)
{
delete[] pcInfo;
return 0;
}
}
Output((BYTE)code1);
while(code2!=0)
{
Output(pcGifTable[code2].bit);
code2=pcGifTable[code2].nextcode;
}
Output((BYTE)code1);
pcGifTable[iTableSize].bit=(BYTE)code1;
pcGifTable[iTableSize].previouscode=oldcode;
iTableSize++;
if(iTableSize==(0x0001<<m_uBitSize))
m_uBitSize++;
if(m_uBitSize>12)
m_uBitSize=12;
oldcode=code;
}
}
hBitmap = DIBTohBitmap(m_hDC,(LPSTR)pcInfo);
m_pcGifTrack++;
m_iTotalReadByte++;
delete[] pcInfo;
return hBitmap;
}
void CGIFShow::SetPosition(int x,int y)
{
m_nPosX=x;
m_nPosY=y;
}
void CGIFShow::Pause(bool status)
{
m_bPause=status;
}
HBITMAP CGIFShow::DIBTohBitmap(HDC hDC,LPSTR lpSrcDIB)
{
HBITMAP hBitmap = NULL;
HBITMAP hOldBmp = NULL;
HDC hTmpDC = NULL;
BITMAPINFOHEADER* bitmapheader = (BITMAPINFOHEADER*)lpSrcDIB;
hBitmap = CreateCompatibleBitmap(hDC,bitmapheader->biWidth,
-(bitmapheader->biHeight));
hTmpDC=CreateCompatibleDC(hDC);
hOldBmp=(HBITMAP)SelectObject(hTmpDC,hBitmap);
StretchDIBits(hTmpDC,0,0,bitmapheader->biWidth,
-bitmapheader->biHeight,0,0,bitmapheader->biWidth,
-bitmapheader->biHeight,lpSrcDIB+40 + 256*sizeof(RGBQUAD),(BITMAPINFO*)lpSrcDIB,
DIB_RGB_COLORS,SRCCOPY);
SelectObject(hTmpDC,hOldBmp);
DeleteDC(hTmpDC);
return hBitmap;
}
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