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119 lines
3.5 KiB
119 lines
3.5 KiB
3 years ago
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//---------------------------------------------------------------------------
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/*
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$Log: not supported by cvs2svn $
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Revision 1.3 2005/03/08 05:55:08 nao
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same strategy as aviimage using AVIStreamOpenFromFile instead of
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AVIFileOpen and AVIFileGetStream for suppress of FD access?
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*/
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//#include <vcl.h>
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#include <stdio.h>
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#include <tchar.h>
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#include <vfw.h>
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#include "aviimage.h"
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aviimage::aviimage()
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{
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AVIFileInit();
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}
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aviimage::aviimage(wchar_t* fname)
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{
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wVideo=~0;
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AVIFileInit();
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AVIStreamOpenFromFile(&pstm,fname,streamtypeVIDEO,0,OF_READ,NULL);
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// AVIFileOpen(&pavi,fname,OF_READ | OF_SHARE_DENY_NONE,NULL);
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// AVIFileOpen(&pavi,fname,OF_READ ,NULL);
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// if (AVIFileInfo(pavi,&fi,sizeof(AVIFILEINFO))!=0)
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// ShowMessage("AVIFileInfo error");
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// for (dwStream=0;dwStream<fi.dwStreams;dwStream++) {
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// if (AVIFileGetStream(pavi,&ptmp,0,dwStream)!=0)
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// ShowMessage("");
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// if (AVIStreamInfo(ptmp,&si,sizeof(AVISTREAMINFO))!=0)
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// ShowMessage("");
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// switch (si.fccType) {
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// case streamtypeVIDEO:
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// if (pstm==NULL || si.wPriority<wVideo) {
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// if (pstm!=NULL)
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// AVIStreamRelease(pstm);
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// pstm=ptmp;
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// wVideo=si.wPriority;
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// }
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// continue;
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// }
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// AVIStreamRelease(ptmp);
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// }
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// above code will not function in Windows XP
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// it works in 95 and/or 98se mode only
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//
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// if(AVIFileGetStream(pavi,&pstm,streamtypeVIDEO,0)!=0)
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// ShowMessage("AVIFileGetStream");
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if (pstm==NULL)
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ShowMessage("pstm NULL");
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if ((pfrm=AVIStreamGetFrameOpen(pstm,NULL))==NULL)
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ShowMessage("GetFrameOpen");
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lStart=AVIStreamStart(pstm);
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lEnd=AVIStreamLength(pstm)+lStart -1; // oops
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if ((pbmih=(LPBITMAPINFOHEADER)AVIStreamGetFrame(pfrm,0))==NULL)
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ShowMessage("GetFrame error");
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frect.top = 0;
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frect.left = 0;
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frect.bottom = pbmih->biHeight-1;
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frect.right = pbmih->biWidth-1;
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}
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void aviimage::saveaframe(long fnum, TMemoryStream* out)
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{
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BITMAPFILEHEADER bmfh;
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if ((pbmih=(LPBITMAPINFOHEADER)AVIStreamGetFrame(pfrm,fnum))==NULL)
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ShowMessage("GetFrame error");
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bmfh.bfType=0x4d42;
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bmfh.bfReserved1=bmfh.bfReserved2=0;
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if (pbmih->biClrUsed==0)
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switch (pbmih->biBitCount) {
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case 1:bmfh.bfOffBits=sizeof(RGBQUAD)*2;break;
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case 4:bmfh.bfOffBits=sizeof(RGBQUAD)*16;break;
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case 8:bmfh.bfOffBits=sizeof(RGBQUAD)*256;break;
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case 24:bmfh.bfOffBits=0;break;
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case 16:
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case 32:
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bmfh.bfOffBits=pbmih->biCompression==BI_RGB?0:sizeof(DWORD)*3;
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}
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else
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bmfh.bfOffBits=pbmih->biClrUsed*sizeof(RGBQUAD);
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bmfh.bfOffBits+=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER);
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bmfh.bfSize=bmfh.bfOffBits+(pbmih->biSizeImage==0
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?((pbmih->biWidth*pbmih->biBitCount+31)&~31)/8*abs(pbmih->biHeight)
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:pbmih->biSizeImage);
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out->Write(&bmfh,sizeof(BITMAPFILEHEADER));
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out->Write(pbmih,bmfh.bfSize-sizeof(BITMAPFILEHEADER));
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out->Seek(0,soFromBeginning);
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}
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//---------------------------------------------------------------------------
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void aviimage::finish()
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{
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if (AVIStreamGetFrameClose(pfrm)!=0)
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ShowMessage("");
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AVIStreamRelease(pstm);
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AVIFileRelease(pavi);
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AVIFileExit();
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}
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