msvideo_main.c

这是一个开放源代码的与WINNT/WIN2K/WIN2003兼容的操作系统

    TRACE("(%p)\n",hic);

    if (!whic) return ICERR_BADHANDLE;

    if (whic->driverproc) 
    {
        MSVIDEO_SendMessage(whic, DRV_CLOSE, 0, 0);
        MSVIDEO_SendMessage(whic, DRV_DISABLE, 0, 0);
        MSVIDEO_SendMessage(whic, DRV_FREE, 0, 0);
    }
    else
    {
        CloseDriver(whic->hdrv, 0, 0);
    }

    /* remove whic from list */
    for (p = &MSVIDEO_FirstHic; *p != NULL; p = &((*p)->next))
    {
        if ((*p) == whic)
        {
            *p = whic->next;
            break;
        }
    }

    HeapFree(GetProcessHeap(), 0, whic);
    return 0;
}



/***********************************************************************
 *		ICImageCompress	[MSVFW32.@]
 */
HANDLE VFWAPI ICImageCompress(
	HIC hic, UINT uiFlags,
	LPBITMAPINFO lpbiIn, LPVOID lpBits,
	LPBITMAPINFO lpbiOut, LONG lQuality,
	LONG* plSize)
{
	FIXME("(%p,%08x,%p,%p,%p,%d,%p)\n",
		hic, uiFlags, lpbiIn, lpBits, lpbiOut, lQuality, plSize);

	return NULL;
}

/***********************************************************************
 *		ICImageDecompress	[MSVFW32.@]
 */

HANDLE VFWAPI ICImageDecompress(
	HIC hic, UINT uiFlags, LPBITMAPINFO lpbiIn,
	LPVOID lpBits, LPBITMAPINFO lpbiOut)
{
	HGLOBAL	hMem = NULL;
	BYTE*	pMem = NULL;
	BOOL	bReleaseIC = FALSE;
	BYTE*	pHdr = NULL;
	ULONG	cbHdr = 0;
	BOOL	bSucceeded = FALSE;
	BOOL	bInDecompress = FALSE;
	DWORD	biSizeImage;

	TRACE("(%p,%08x,%p,%p,%p)\n",
		hic, uiFlags, lpbiIn, lpBits, lpbiOut);

	if ( hic == NULL )
	{
		hic = ICDecompressOpen( ICTYPE_VIDEO, 0, &lpbiIn->bmiHeader, (lpbiOut != NULL) ? &lpbiOut->bmiHeader : NULL );
		if ( hic == NULL )
		{
			WARN("no handler\n" );
			goto err;
		}
		bReleaseIC = TRUE;
	}
	if ( uiFlags != 0 )
	{
		FIXME( "unknown flag %08x\n", uiFlags );
		goto err;
	}
	if ( lpbiIn == NULL || lpBits == NULL )
	{
		WARN("invalid argument\n");
		goto err;
	}

	if ( lpbiOut != NULL )
	{
		if ( lpbiOut->bmiHeader.biSize != sizeof(BITMAPINFOHEADER) )
			goto err;
		cbHdr = sizeof(BITMAPINFOHEADER);
		if ( lpbiOut->bmiHeader.biCompression == 3 )
			cbHdr += sizeof(DWORD)*3;
		else
		if ( lpbiOut->bmiHeader.biBitCount <= 8 )
		{
			if ( lpbiOut->bmiHeader.biClrUsed == 0 )
				cbHdr += sizeof(RGBQUAD) * (1<<lpbiOut->bmiHeader.biBitCount);
			else
				cbHdr += sizeof(RGBQUAD) * lpbiOut->bmiHeader.biClrUsed;
		}
	}
	else
	{
		TRACE( "get format\n" );

		cbHdr = ICDecompressGetFormatSize(hic,lpbiIn);
		if ( cbHdr < sizeof(BITMAPINFOHEADER) )
			goto err;
		pHdr = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,cbHdr+sizeof(RGBQUAD)*256);
		if ( pHdr == NULL )
			goto err;
		if ( ICDecompressGetFormat( hic, lpbiIn, (BITMAPINFO*)pHdr ) != ICERR_OK )
			goto err;
		lpbiOut = (BITMAPINFO*)pHdr;
		if ( lpbiOut->bmiHeader.biBitCount <= 8 &&
			 ICDecompressGetPalette( hic, lpbiIn, lpbiOut ) != ICERR_OK &&
			 lpbiIn->bmiHeader.biBitCount == lpbiOut->bmiHeader.biBitCount )
		{
			if ( lpbiIn->bmiHeader.biClrUsed == 0 )
				memcpy( lpbiOut->bmiColors, lpbiIn->bmiColors, sizeof(RGBQUAD)*(1<<lpbiOut->bmiHeader.biBitCount) );
			else
				memcpy( lpbiOut->bmiColors, lpbiIn->bmiColors, sizeof(RGBQUAD)*lpbiIn->bmiHeader.biClrUsed );
		}
		if ( lpbiOut->bmiHeader.biBitCount <= 8 &&
			 lpbiOut->bmiHeader.biClrUsed == 0 )
			lpbiOut->bmiHeader.biClrUsed = 1<<lpbiOut->bmiHeader.biBitCount;

		lpbiOut->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
		cbHdr = sizeof(BITMAPINFOHEADER) + sizeof(RGBQUAD)*lpbiOut->bmiHeader.biClrUsed;
	}

	biSizeImage = lpbiOut->bmiHeader.biSizeImage;
	if ( biSizeImage == 0 )
		biSizeImage = ((((lpbiOut->bmiHeader.biWidth * lpbiOut->bmiHeader.biBitCount + 7) >> 3) + 3) & (~3)) * abs(lpbiOut->bmiHeader.biHeight);

	TRACE( "call ICDecompressBegin\n" );

	if ( ICDecompressBegin( hic, lpbiIn, lpbiOut ) != ICERR_OK )
		goto err;
	bInDecompress = TRUE;

	TRACE( "cbHdr %d, biSizeImage %d\n", cbHdr, biSizeImage );

	hMem = GlobalAlloc( GMEM_MOVEABLE|GMEM_ZEROINIT, cbHdr + biSizeImage );
	if ( hMem == NULL )
	{
		WARN( "out of memory\n" );
		goto err;
	}
	pMem = (BYTE*)GlobalLock( hMem );
	if ( pMem == NULL )
		goto err;
	memcpy( pMem, lpbiOut, cbHdr );

	TRACE( "call ICDecompress\n" );
	if ( ICDecompress( hic, 0, &lpbiIn->bmiHeader, lpBits, &lpbiOut->bmiHeader, pMem+cbHdr ) != ICERR_OK )
		goto err;

	bSucceeded = TRUE;
err:
	if ( bInDecompress )
		ICDecompressEnd( hic );
	if ( bReleaseIC )
		ICClose(hic);
        HeapFree(GetProcessHeap(),0,pHdr);
	if ( pMem != NULL )
		GlobalUnlock( hMem );
	if ( !bSucceeded && hMem != NULL )
	{
		GlobalFree(hMem); hMem = NULL;
	}

	return (HANDLE)hMem;
}

/***********************************************************************
 *      ICSeqCompressFrame   [MSVFW32.@]
 */
LPVOID VFWAPI ICSeqCompressFrame(PCOMPVARS pc, UINT uiFlags, LPVOID lpBits, BOOL *pfKey, LONG *plSize)
{
    ICCOMPRESS* icComp = (ICCOMPRESS *)pc->lpState;
    DWORD ret;
    TRACE("(%p, 0x%08x, %p, %p, %p)\n", pc, uiFlags, lpBits, pfKey, plSize);

    if (pc->cbState != sizeof(ICCOMPRESS))
    {
       ERR("Invalid cbState %i\n", pc->cbState);
       return NULL;
    }

    if (!pc->lKeyCount++)
       icComp->dwFlags = ICCOMPRESS_KEYFRAME;
    else
    {
        if (pc->lKey && pc->lKeyCount == (pc->lKey - 1))
        /* No key frames if pc->lKey == 0 */
           pc->lKeyCount = 0;
	icComp->dwFlags = 0;
    }

    icComp->lpInput = lpBits;
    icComp->lFrameNum = pc->lFrame++;
    icComp->lpOutput = pc->lpBitsOut;
    icComp->lpPrev = pc->lpBitsPrev;
    ret = ICSendMessage(pc->hic, ICM_COMPRESS, (DWORD_PTR)icComp, sizeof(icComp));

    if (icComp->dwFlags & AVIIF_KEYFRAME)
    {
       pc->lKeyCount = 1;
       *pfKey = TRUE;
       TRACE("Key frame\n");
    }
    else
       *pfKey = FALSE;

    *plSize = icComp->lpbiOutput->biSizeImage;
    TRACE(" -- 0x%08x\n", ret);
    if (ret == ICERR_OK)
    {
       LPVOID oldprev, oldout;
/* We shift Prev and Out, so we don't have to allocate and release memory */
       oldprev = pc->lpBitsPrev;
       oldout = pc->lpBitsOut;
       pc->lpBitsPrev = oldout;
       pc->lpBitsOut = oldprev;

       TRACE("returning: %p\n", icComp->lpOutput);
       return icComp->lpOutput;
    }
    return NULL;
}

/***********************************************************************
 *      ICSeqCompressFrameEnd   [MSVFW32.@]
 */
void VFWAPI ICSeqCompressFrameEnd(PCOMPVARS pc)
{
    DWORD ret;
    TRACE("(%p)\n", pc);
    ret = ICSendMessage(pc->hic, ICM_COMPRESS_END, 0, 0);
    TRACE(" -- %x\n", ret);
    HeapFree(GetProcessHeap(), 0, pc->lpbiIn);
    HeapFree(GetProcessHeap(), 0, pc->lpBitsPrev);
    HeapFree(GetProcessHeap(), 0, pc->lpBitsOut);
    HeapFree(GetProcessHeap(), 0, pc->lpState);
    pc->lpbiIn = pc->lpBitsPrev = pc->lpBitsOut = pc->lpState = NULL;
}

/***********************************************************************
 *      ICSeqCompressFrameStart [MSVFW32.@]
 */
BOOL VFWAPI ICSeqCompressFrameStart(PCOMPVARS pc, LPBITMAPINFO lpbiIn)
{
    /* I'm ignoring bmiColors as I don't know what to do with it,
     * it doesn't appear to be used though
     */
    DWORD ret;
    pc->lpbiIn = HeapAlloc(GetProcessHeap(), 0, sizeof(BITMAPINFO));
    if (!pc->lpbiIn)
        return FALSE;

    memcpy(pc->lpbiIn, lpbiIn, sizeof(BITMAPINFO));
    pc->lpBitsPrev = HeapAlloc(GetProcessHeap(), 0, pc->lpbiIn->bmiHeader.biSizeImage);
    if (!pc->lpBitsPrev)
    {
        HeapFree(GetProcessHeap(), 0, pc->lpbiIn);
	return FALSE;
    }

    pc->lpState = HeapAlloc(GetProcessHeap(), 0, sizeof(ICCOMPRESS));
    if (!pc->lpState)
    {
       HeapFree(GetProcessHeap(), 0, pc->lpbiIn);
       HeapFree(GetProcessHeap(), 0, pc->lpBitsPrev);
       return FALSE;
    }
    pc->cbState = sizeof(ICCOMPRESS);

    pc->lpBitsOut = HeapAlloc(GetProcessHeap(), 0, pc->lpbiOut->bmiHeader.biSizeImage);
    if (!pc->lpBitsOut)
    {
       HeapFree(GetProcessHeap(), 0, pc->lpbiIn);
       HeapFree(GetProcessHeap(), 0, pc->lpBitsPrev);
       HeapFree(GetProcessHeap(), 0, pc->lpState);
       return FALSE;
    }
    TRACE("Compvars:\n"
          "\tpc:\n"
          "\tsize: %i\n"
          "\tflags: %i\n"
          "\thic: %p\n"
          "\ttype: %x\n"
          "\thandler: %x\n"
          "\tin/out: %p/%p\n"
          "key/data/quality: %i/%i/%i\n",
	     pc->cbSize, pc->dwFlags, pc->hic, pc->fccType, pc->fccHandler,
	     pc->lpbiIn, pc->lpbiOut, pc->lKey, pc->lDataRate, pc->lQ);

    ret = ICSendMessage(pc->hic, ICM_COMPRESS_BEGIN, (DWORD_PTR)pc->lpbiIn, (DWORD_PTR)pc->lpbiOut);
    TRACE(" -- %x\n", ret);
    if (ret == ICERR_OK)
    {
       ICCOMPRESS* icComp = (ICCOMPRESS *)pc->lpState;
       /* Initialise some variables */
       pc->lFrame = 0; pc->lKeyCount = 0;

       icComp->lpbiOutput = &pc->lpbiOut->bmiHeader;
       icComp->lpbiInput = &pc->lpbiIn->bmiHeader;
       icComp->lpckid = NULL;
       icComp->dwFrameSize = 0;
       icComp->dwQuality = pc->lQ;
       icComp->lpbiPrev = &pc->lpbiIn->bmiHeader;
       return TRUE;
    }
    HeapFree(GetProcessHeap(), 0, pc->lpbiIn);
    HeapFree(GetProcessHeap(), 0, pc->lpBitsPrev);
    HeapFree(GetProcessHeap(), 0, pc->lpState);
    HeapFree(GetProcessHeap(), 0, pc->lpBitsOut);
    pc->lpBitsPrev = pc->lpbiIn = pc->lpState = pc->lpBitsOut = NULL;
    return FALSE;
}

/***********************************************************************
 *      GetFileNamePreview   [MSVFW32.@]
 */
static BOOL GetFileNamePreview(LPVOID lpofn,BOOL bSave,BOOL bUnicode)
{
  CHAR    szFunctionName[20];
  BOOL    (*fnGetFileName)(LPVOID);
  HMODULE hComdlg32;
  BOOL    ret;

  FIXME("(%p,%d,%d), semi-stub!\n",lpofn,bSave,bUnicode);

  lstrcpyA(szFunctionName, (bSave ? "GetSaveFileName" : "GetOpenFileName"));
  lstrcatA(szFunctionName, (bUnicode ? "W" : "A"));

  hComdlg32 = LoadLibraryA("COMDLG32.DLL");
  if (hComdlg32 == NULL)
    return FALSE;

  fnGetFileName = (LPVOID)GetProcAddress(hComdlg32, szFunctionName);
  if (fnGetFileName == NULL)
    return FALSE;

  /* FIXME: need to add OFN_ENABLEHOOK and our own handler */
  ret = fnGetFileName(lpofn);

  FreeLibrary(hComdlg32);
  return ret;
}

/***********************************************************************
 *		GetOpenFileNamePreviewA	[MSVFW32.@]
 */
BOOL WINAPI GetOpenFileNamePreviewA(LPOPENFILENAMEA lpofn)
{
  FIXME("(%p), semi-stub!\n", lpofn);

  return GetFileNamePreview(lpofn, FALSE, FALSE);
}

/***********************************************************************
 *		GetOpenFileNamePreviewW	[MSVFW32.@]
 */
BOOL WINAPI GetOpenFileNamePreviewW(LPOPENFILENAMEW lpofn)
{
  FIXME("(%p), semi-stub!\n", lpofn);

  return GetFileNamePreview(lpofn, FALSE, TRUE);
}

/***********************************************************************
 *		GetSaveFileNamePreviewA	[MSVFW32.@]
 */
BOOL WINAPI GetSaveFileNamePreviewA(LPOPENFILENAMEA lpofn)
{
  FIXME("(%p), semi-stub!\n", lpofn);

  return GetFileNamePreview(lpofn, TRUE, FALSE);
}

/***********************************************************************
 *		GetSaveFileNamePreviewW	[MSVFW32.@]
 */
BOOL WINAPI GetSaveFileNamePreviewW(LPOPENFILENAMEW lpofn)
{
  FIXME("(%p), semi-stub!\n", lpofn);

  return GetFileNamePreview(lpofn, TRUE, TRUE);
}