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怎样将一个数据流以avi形式保存 问题点数：0、回复次数：3Top
1 楼deverxp（abcdefg）回复于 2003-06-03 17:15:57 得分 0
WRITEAVI.C
/**************************************************************************
*
* THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
* KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
* PURPOSE.
*
* Copyright (C) 1992 - 1996 Microsoft Corporation. All Rights Reserved.
*
**************************************************************************/
/****************************************************************************
*
* WRITEAVI.C
*
* Creates the file OUTPUT.AVI, an AVI file consisting of a rotating clock
* face. This program demonstrates using the functions in AVIFILE.DLL
* to make writing AVI files simple.
*
* This is a stripped-down example; a real application would have a user
* interface and check for errors.
*
***************************************************************************/
#include "stdafx.h"
#include <windowsx.h>
#include <memory.h>
#include <mmsystem.h>
#include <vfw.h>
#include "writeavi.h"
static HANDLE MakeDib( HBITMAP hbitmap, UINT bits )
{
HANDLE hdib ;
HDC hdc ;
BITMAP bitmap ;
UINT wLineLen ;
DWORD dwSize ;
DWORD wColSize ;
LPBITMAPINFOHEADER lpbi ;
LPBYTE lpBits ;
GetObject(hbitmap,sizeof(BITMAP),&bitmap) ;
//
// DWORD align the width of the DIB
// Figure out the size of the colour table
// Calculate the size of the DIB
//
wLineLen = (bitmap.bmWidth*bits+31)/32 * 4;
wColSize = sizeof(RGBQUAD)*((bits <= 8) ? 1<<bits : 0);
dwSize = sizeof(BITMAPINFOHEADER) + wColSize +
(DWORD)(UINT)wLineLen*(DWORD)(UINT)bitmap.bmHeight;
//
// Allocate room for a DIB and set the LPBI fields
//
hdib = GlobalAlloc(GHND,dwSize);
if (!hdib)
return hdib ;
lpbi = (LPBITMAPINFOHEADER)GlobalLock(hdib) ;
lpbi->biSize = sizeof(BITMAPINFOHEADER) ;
lpbi->biWidth = bitmap.bmWidth ;
lpbi->biHeight = bitmap.bmHeight ;
lpbi->biPlanes = 1 ;
lpbi->biBitCount = (WORD) bits ;
lpbi->biCompression = BI_RGB ;
lpbi->biSizeImage = dwSize - sizeof(BITMAPINFOHEADER) - wColSize ;
lpbi->biXPelsPerMeter = 0 ;
lpbi->biYPelsPerMeter = 0 ;
lpbi->biClrUsed = (bits <= 8) ? 1<<bits : 0;
lpbi->biClrImportant = 0 ;
//
// Get the bits from the bitmap and stuff them after the LPBI
//
lpBits = (LPBYTE)(lpbi+1)+wColSize ;
hdc = CreateCompatibleDC(NULL) ;
GetDIBits(hdc,hbitmap,0,bitmap.bmHeight,lpBits,(LPBITMAPINFO)lpbi, DIB_RGB_COLORS);
// Fix this if GetDIBits messed it up....
lpbi->biClrUsed = (bits <= 8) ? 1<<bits : 0;
DeleteDC(hdc) ;
GlobalUnlock(hdib);
return hdib ;
}
CAVIFile::CAVIFile(LPCTSTR lpszFileName, int xdim, int ydim)
: FName(lpszFileName),
xDim(xdim), yDim(ydim), bOK(true), nFrames(0)
{
pfile = NULL;
ps = NULL;
psCompressed = NULL;
psText = NULL;
aopts[0] = &opts;
WORD wVer = HIWORD(VideoForWindowsVersion());
if (wVer < 0x010A)
{
// oops, we are too old, blow out of here
bOK = false;
}
else
{
AVIFileInit();
}
}
CAVIFile::~CAVIFile()
{
if (ps)
AVIStreamClose(ps);
if (psCompressed)
AVIStreamClose(psCompressed);
if (psText)
AVIStreamClose(psText);
if (pfile)
AVIFileClose(pfile);
WORD wVer = HIWORD(VideoForWindowsVersion());
if (wVer >= 0x010A)
{
AVIFileExit();
}
}
bool CAVIFile::AddFrame(CBitmap& bmp)
{
HRESULT hr;
char szMessage[BUFSIZE];
if (!bOK)
return false;
LPBITMAPINFOHEADER alpbi = (LPBITMAPINFOHEADER)GlobalLock(MakeDib(bmp, 8));
if (alpbi == NULL)
return false;
if (xDim>=0 && xDim != alpbi->biWidth)
{
GlobalFreePtr(alpbi);
return false;
}
if (yDim>=0 && yDim != alpbi->biHeight)
{
GlobalFreePtr(alpbi);
return false;
}
xDim = alpbi->biWidth;
yDim = alpbi->biHeight;
if (nFrames == 0)
{
hr = AVIFileOpen(&pfile, // returned file pointer
FName, // file name
OF_WRITE | OF_CREATE, // mode to open file with
NULL); // use handler determined
// from file extension....
if (hr != AVIERR_OK)
{
GlobalFreePtr(alpbi);
bOK = false;
return false;
}
_fmemset(&strhdr, 0, sizeof(strhdr));
strhdr.fccType = streamtypeVIDEO;// stream type
strhdr.fccHandler = 0;
strhdr.dwScale = 1;
strhdr.dwRate = 15; // 15 fps
strhdr.dwSuggestedBufferSize = alpbi->biSizeImage;
SetRect(&strhdr.rcFrame, 0, 0, // rectangle for stream
(int) alpbi->biWidth,
(int) alpbi->biHeight);
// And create the stream;
hr = AVIFileCreateStream(pfile, // file pointer
&ps, // returned stream pointer
&strhdr); // stream header
if (hr != AVIERR_OK)
{
GlobalFreePtr(alpbi);
bOK = false;
return false;
}
_fmemset(&opts, 0, sizeof(opts));
if (!AVISaveOptions(NULL, 0, 1, &ps, (LPAVICOMPRESSOPTIONS FAR *) &aopts))
{
GlobalFreePtr(alpbi);
bOK = false;
return false;
}
hr = AVIMakeCompressedStream(&psCompressed, ps, &opts, NULL);
if (hr != AVIERR_OK)
{
GlobalFreePtr(alpbi);
bOK = false;
return false;
}
hr = AVIStreamSetFormat(psCompressed, 0,
alpbi, // stream format
alpbi->biSize + // format size
alpbi->biClrUsed * sizeof(RGBQUAD));
if (hr != AVIERR_OK)
{
GlobalFreePtr(alpbi);
bOK = false;
return false;
}
// Fill in the stream header for the text stream....
// The text stream is in 60ths of a second....
/*
_fmemset(&strhdr, 0, sizeof(strhdr));
strhdr.fccType = streamtypeTEXT;
strhdr.fccHandler = mmioFOURCC('D', 'R', 'A', 'W');
strhdr.dwScale = 1;
strhdr.dwRate = 60;
strhdr.dwSuggestedBufferSize = sizeof(szText);
SetRect(&strhdr.rcFrame, 0, (int) alpbi->biHeight,
(int) alpbi->biWidth, (int) alpbi->biHeight + TEXT_HEIGHT);
// ....and create the stream.
hr = AVIFileCreateStream(pfile, &psText, &strhdr);
if (hr != AVIERR_OK)
{
GlobalFreePtr(alpbi);
bOK = false;
return false;
}
dwTextFormat = sizeof(dwTextFormat);
hr = AVIStreamSetFormat(psText, 0, &dwTextFormat, sizeof(dwTextFormat));
if (hr != AVIERR_OK)
{
GlobalFreePtr(alpbi);
bOK = false;
return false;
}
*/
}
// Jetzt eigentliches Schreiben
hr = AVIStreamWrite(psCompressed, // stream pointer
nFrames * 10, // time of this frame
1, // number to write
(LPBYTE) alpbi + // pointer to data
alpbi->biSize +
alpbi->biClrUsed * sizeof(RGBQUAD),
alpbi->biSizeImage, // size of this frame
AVIIF_KEYFRAME, // flags....
NULL,
NULL);
if (hr != AVIERR_OK)
{
GlobalFreePtr(alpbi);
bOK = false;
return false;
}
// Make some text to put in the file ...
//LoadString(hInstance, IDS_TEXTFORMAT, szMessage, BUFSIZE );
/*
strcpy(szMessage, "This is frame #%d");
int iLen = wsprintf(szText, szMessage, (int)(nFrames + 1));
// ... and write it as well.
hr = AVIStreamWrite(psText,
nFrames * 40,
1,
szText,
iLen + 1,
AVIIF_KEYFRAME,
NULL,
NULL);
if (hr != AVIERR_OK)
{
GlobalFreePtr(alpbi);
bOK = false;
return false;
}
*/
GlobalFreePtr(alpbi);
nFrames++;
return true;
}
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2 楼deverxp（abcdefg）回复于 2003-06-03 17:19:13 得分 0
writeAVI.h
==============
#include <vfw.h>
#define TEXT_HEIGHT 20
#define AVIIF_KEYFRAME 0x00000010L // this frame is a key frame.
#define BUFSIZE 260
class CAVIFile : public CObject
{
public:
CAVIFile(LPCTSTR lpszFileName, int xdim = -1, int ydim = -1);
virtual ~CAVIFile();
virtual bool AddFrame(CBitmap& bmp);
CString GetFName() const {return FName;};
virtual bool IsOK() const {return bOK;};
private:
CString FName;
int xDim;
int yDim;
AVISTREAMINFO strhdr;
PAVIFILE pfile;
PAVISTREAM ps;
PAVISTREAM psCompressed;
PAVISTREAM psText;
AVICOMPRESSOPTIONS opts;
AVICOMPRESSOPTIONS FAR * aopts[1];
DWORD dwTextFormat;
char szText[BUFSIZE];
int nFrames;
bool bOK;
};
请注意揭帖，要不然下次可能就没人理你了，我想分想疯了。Top
3 楼bjghm（明镜）回复于 2003-06-03 17:50:41 得分 0
谢谢你，你是自己写的一个avi类吗？我现在很急，没时间看，能帮我注视一下吗？一定给分！！！！Top
