Sweden-Number/dlls/comctl32/animate.c

/* -*- tab-width: 8; c-basic-offset: 4 -*- */
/*
 * Animation control
 *
 * Copyright 1998, 1999 Eric Kohl
 * 		   1999 Eric Pouech
 *
 * NOTES
 *   I will only improve this control once in a while.
 *     Eric <ekohl@abo.rhein-zeitung.de>
 *
 * TODO:
 *   - check for the 'rec ' list in some AVI files
 *   - implement some missing flags (ACS_TRANSPARENT)
 *   - protection between service thread and wndproc messages handling 
 *     concurrent access to infoPtr
 */


#include "winbase.h"
#include "commctrl.h"
#include "vfw.h"
#include "mmsystem.h"
#include "services.h"
#include "debugtools.h"

DEFAULT_DEBUG_CHANNEL(animate);

typedef struct
{
   /* pointer to msvideo functions. it's easier to put them here.
    * to be correct, they should be defined on a per process basis, but
    * this would required a per process storage. We're using a per object
    * storage instead, which is not efficient on memory usage, but
    * will lead to less bugs in the future
    */
   HIC	  	WINAPI  (*fnICOpen)(DWORD, DWORD, UINT);
   LRESULT	WINAPI  (*fnICClose)(HIC);
   LRESULT	WINAPI  (*fnICSendMessage)(HIC, UINT, DWORD, DWORD);
   DWORD	WINAPIV (*fnICDecompress)(HIC,DWORD,LPBITMAPINFOHEADER,LPVOID,LPBITMAPINFOHEADER,LPVOID);

    HMMIO WINAPI (*fnmmioOpenA)(LPSTR,MMIOINFO*,DWORD);
    MMRESULT WINAPI (*fnmmioClose)(HMMIO,UINT);
    UINT  WINAPI (*fnmmioAscend)(HMMIO,MMCKINFO*,UINT);
    UINT  WINAPI (*fnmmioDescend)(HMMIO,MMCKINFO*,const MMCKINFO*,UINT);
    LONG  WINAPI (*fnmmioSeek)(HMMIO,LONG,INT);
    LONG  WINAPI (*fnmmioRead)(HMMIO,HPSTR,LONG);

   /* reference to input stream (file or resource) */
   HGLOBAL 		hRes;
   HMMIO			hMMio;	/* handle to mmio stream */
   HWND			hWnd;
   /* information on the loaded AVI file */
   MainAVIHeader	mah;
   AVIStreamHeader	ash;
   LPBITMAPINFOHEADER	inbih;
   LPDWORD		lpIndex;
   /* data for the decompressor */
   HIC			hic;
   LPBITMAPINFOHEADER	outbih;
   LPVOID		indata;
   LPVOID		outdata;
   /* data for the background mechanism */
   CRITICAL_SECTION	cs;
   HANDLE		hService;
   UINT			uTimer;
   /* data for playing the file */
   int			nFromFrame;
   int			nToFrame;
   int			nLoop;
   int			currFrame;
   /* Background frame info*/
   HBITMAP	    bkgFrameb;
   LPDWORD		bkColor;
} ANIMATE_INFO;

#define ANIMATE_GetInfoPtr(hWnd) ((ANIMATE_INFO *)GetWindowLongA(hWnd, 0))

HMODULE hModWinmm;

static void ANIMATE_Notify(ANIMATE_INFO* infoPtr, UINT notif)
{
    SendMessageA(GetParent(infoPtr->hWnd), WM_COMMAND, 
		 MAKEWPARAM(GetDlgCtrlID(infoPtr->hWnd), notif), 
		 (LPARAM)infoPtr->hWnd);
}

static BOOL ANIMATE_LoadResA(ANIMATE_INFO *infoPtr, HINSTANCE hInst, LPSTR lpName)
{
    HRSRC 	hrsrc;
    MMIOINFO	mminfo;
    LPVOID	lpAvi;
    
    hrsrc = FindResourceA(hInst, lpName, "AVI");
    if (!hrsrc)
	return FALSE;
    
    infoPtr->hRes = LoadResource(hInst, hrsrc);
    if (!infoPtr->hRes)
 	return FALSE;
    
    lpAvi = LockResource(infoPtr->hRes);
    if (!lpAvi)
	return FALSE;
    
    memset(&mminfo, 0, sizeof(mminfo));
    mminfo.fccIOProc = FOURCC_MEM;
    mminfo.pchBuffer = (LPSTR)lpAvi;
    mminfo.cchBuffer = SizeofResource(hInst, hrsrc);
    infoPtr->hMMio = infoPtr->fnmmioOpenA(NULL, &mminfo, MMIO_READ);
    
    if (!infoPtr->hMMio) {
	GlobalFree((HGLOBAL)lpAvi);
	return FALSE;
    }

    infoPtr->bkgFrameb=(HBITMAP)NULL;
    
    return TRUE;
}


static BOOL ANIMATE_LoadFileA(ANIMATE_INFO *infoPtr, LPSTR lpName)
{
    infoPtr->hMMio = infoPtr->fnmmioOpenA((LPSTR)lpName, NULL,
			       MMIO_ALLOCBUF | MMIO_READ | MMIO_DENYWRITE);
    
    if (!infoPtr->hMMio)
	return FALSE;
    
    return TRUE;
}


static LRESULT ANIMATE_DoStop(ANIMATE_INFO *infoPtr)
{
    EnterCriticalSection(&infoPtr->cs);

    /* should stop playing */
    if (infoPtr->hService) {
	SERVICE_Delete(infoPtr->hService);
	infoPtr->hService = 0;
    }
    if (infoPtr->uTimer) {
	KillTimer(infoPtr->hWnd, infoPtr->uTimer);
	infoPtr->uTimer = 0;
    }

    LeaveCriticalSection(&infoPtr->cs);

    ANIMATE_Notify(infoPtr, ACN_STOP);

    return TRUE;
}


static void ANIMATE_Free(ANIMATE_INFO *infoPtr)
{
    if (infoPtr->hMMio) {
	ANIMATE_DoStop(infoPtr);
	infoPtr->fnmmioClose(infoPtr->hMMio, 0);
    if (infoPtr->bkgFrameb) {
 	    DeleteObject(infoPtr->bkgFrameb);
        infoPtr->bkgFrameb=(HBITMAP)NULL;
        infoPtr->bkColor=NULL;
	}
	if (infoPtr->hRes) {
 	    FreeResource(infoPtr->hRes);
	    infoPtr->hRes = 0;
	}
	if (infoPtr->lpIndex) {
	    HeapFree(GetProcessHeap(), 0, infoPtr->lpIndex);
	    infoPtr->lpIndex = NULL;
	}
	if (infoPtr->hic) {
	    (infoPtr->fnICClose)(infoPtr->hic);
	    infoPtr->hic = 0;
	}
	if (infoPtr->inbih) {
	    HeapFree(GetProcessHeap(), 0, infoPtr->inbih);
	    infoPtr->inbih = NULL;
	}
	if (infoPtr->outbih) {
	    HeapFree(GetProcessHeap(), 0, infoPtr->outbih);
	    infoPtr->outbih = NULL;
	}
	HeapFree(GetProcessHeap(), 0, infoPtr->indata);
	HeapFree(GetProcessHeap(), 0, infoPtr->outdata);
	infoPtr->indata = infoPtr->outdata = NULL;
	infoPtr->hWnd = 0;
	infoPtr->hMMio = 0;
	memset(&infoPtr->mah, 0, sizeof(infoPtr->mah));
	memset(&infoPtr->ash, 0, sizeof(infoPtr->ash));
	infoPtr->nFromFrame = infoPtr->nToFrame = infoPtr->nLoop = infoPtr->currFrame = 0;
    }
}


static LRESULT ANIMATE_PaintFrame(ANIMATE_INFO* infoPtr, HDC hDC)
{
    if (!hDC || !infoPtr->inbih)
	return TRUE;
    if (infoPtr->hic){
        if (GetWindowLongA(infoPtr->hWnd, GWL_STYLE) & ACS_TRANSPARENT){
            FIXME("TRANSPARENCY NOT SUPPORTED(NOT TESTED) FOR COMPRESSED IMAGE\n");
        }
	StretchDIBits(hDC, 0, 0, infoPtr->outbih->biWidth, infoPtr->outbih->biHeight,
		      0, 0, infoPtr->outbih->biWidth, infoPtr->outbih->biHeight,
		      infoPtr->outdata, (LPBITMAPINFO)infoPtr->outbih, DIB_RGB_COLORS,
              SRCCOPY);
    }
    else{
        if (GetWindowLongA(infoPtr->hWnd, GWL_STYLE) & ACS_TRANSPARENT){
            HBITMAP hbmMem, hbmMem2,hbmMem3;
            HDC hdcSrc, hdcMask, hdcMem;

    	    hdcSrc = CreateCompatibleDC(hDC);
            hdcMask = CreateCompatibleDC(hDC);
            hdcMem = CreateCompatibleDC(hDC);

            /* create a Black and white bitmap */
            hbmMem = CreateCompatibleBitmap( hDC,infoPtr->inbih->biWidth,infoPtr->inbih->biHeight);
            hbmMem2 = CreateBitmap(infoPtr->inbih->biWidth, infoPtr->inbih->biHeight, 1, 1, NULL);
            hbmMem3 = CreateCompatibleBitmap( hDC,infoPtr->inbih->biWidth,infoPtr->inbih->biHeight);

            SelectObject( hdcSrc, hbmMem);

            StretchDIBits(hdcSrc, 0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight,
		      0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight,
		      infoPtr->indata, (LPBITMAPINFO)infoPtr->inbih, DIB_RGB_COLORS,
		      SRCCOPY);

            if (infoPtr->bkgFrameb==(HBITMAP)NULL)
            {
                infoPtr->bkgFrameb = CreateCompatibleBitmap( hDC,infoPtr->inbih->biWidth,infoPtr->inbih->biHeight);
                SelectObject( hdcMem, infoPtr->bkgFrameb);
                BitBlt(hdcMem, 0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight, hDC, 0, 0, SRCCOPY);
                /* Get the transparent color from the first frame*/
                if (infoPtr->inbih->biBitCount<=8)
                    infoPtr->bkColor = (LPVOID)((LPSTR)infoPtr->inbih + (WORD)(((LPBITMAPINFO)infoPtr->inbih)->bmiHeader.biSize));
                else
                    infoPtr->bkColor = (LPVOID)GetPixel(hdcSrc, 0, 0);

            }
            /* Need the copy of the original destination HDC*/
            SelectObject( hdcSrc, infoPtr->bkgFrameb);
            SelectObject( hdcMem, hbmMem3);
            BitBlt(hdcMem, 0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight, hdcSrc, 0, 0, SRCCOPY);

            SelectObject( hdcSrc, hbmMem);
            SelectObject( hdcMask, hbmMem2);

            /*Windows converts a color source into monochrome when the destination is
            monochrome. In this situation, all pixels in the color bitmap that are the same color
            as the background color become 1s, and all the other pixels are converted to 0s. */

            if (infoPtr->inbih->biBitCount<=8)
                SetBkColor(hdcSrc, infoPtr->bkColor[(((BYTE*)infoPtr->indata)[0])]);
            else{ /* has not been tested with more then 8 bpp */
                FIXME("Has not been test with more than 8bpp, errors are possible\n");
                SetBkColor(hdcSrc, (COLORREF)infoPtr->bkColor);
            }

            BitBlt(hdcMask, 0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight, hdcSrc, 0, 0, SRCCOPY);

            /*During a blt operation with a color destination, a monochrome source bitmap
            (and/or a brush when applicable) is converted to color on the fly before the
            actual ROP is carried out on the bits. The 0 (black) pixels in the monochrome
            bitmap are converted to the destination's text (foreground) color, and the 1
            (white) pixels are converted to the background color. */

            SetBkColor(hdcSrc, RGB(0,0,0));          // 1s --> black (0x000000)
            SetTextColor(hdcSrc, RGB(255,255,255));  // 0s --> white (0xFFFFFF)

            BitBlt(hdcSrc, 0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight, hdcMask, 0, 0, SRCAND);

            SetBkColor(hdcMem, RGB(255,255,255));  // 0s --> white (0xFFFFFF)
            SetTextColor(hdcMem, RGB(0,0,0));          // 1s --> black (0x000000)

            BitBlt(hdcMem, 0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight, hdcMask, 0, 0, SRCAND);

            BitBlt(hdcMem, 0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight, hdcSrc, 0, 0, SRCPAINT);

            BitBlt(hDC, 0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight, hdcMem, 0, 0, SRCCOPY);

            DeleteDC(hdcMem);
            DeleteDC(hdcSrc);
            DeleteDC(hdcMask);
            DeleteObject(hbmMem);
            DeleteObject(hbmMem2);
            DeleteObject(hbmMem3);

        }
        else{
            StretchDIBits(hDC, 0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight,
		      0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight,
		      infoPtr->indata, (LPBITMAPINFO)infoPtr->inbih, DIB_RGB_COLORS,
		      SRCCOPY);
         }
    }

    return TRUE;
}

static LRESULT ANIMATE_DrawFrame(ANIMATE_INFO* infoPtr)
{
    HDC		hDC;

    TRACE("Drawing frame %d (loop %d)\n", infoPtr->currFrame, infoPtr->nLoop);

    EnterCriticalSection(&infoPtr->cs);

    infoPtr->fnmmioSeek(infoPtr->hMMio, infoPtr->lpIndex[infoPtr->currFrame], SEEK_SET);
    infoPtr->fnmmioRead(infoPtr->hMMio, infoPtr->indata, infoPtr->ash.dwSuggestedBufferSize);
    
    if (infoPtr->hic &&
	(infoPtr->fnICDecompress)(infoPtr->hic, 0, infoPtr->inbih, infoPtr->indata, 
				  infoPtr->outbih, infoPtr->outdata) != ICERR_OK) {
	LeaveCriticalSection(&infoPtr->cs);
	WARN("Decompression error\n");
	return FALSE;
    }

    if ((hDC = GetDC(infoPtr->hWnd)) != 0) {
	ANIMATE_PaintFrame(infoPtr, hDC);
	ReleaseDC(infoPtr->hWnd, hDC);
    }

    if (infoPtr->currFrame++ >= infoPtr->nToFrame) {
	infoPtr->currFrame = infoPtr->nFromFrame;
	if (infoPtr->nLoop != -1) {
	    if (--infoPtr->nLoop == 0) {
		ANIMATE_DoStop(infoPtr);
	    }
	}
    }
    LeaveCriticalSection(&infoPtr->cs);

    return TRUE;
}

static void CALLBACK ANIMATE_ServiceCallback(ULONG_PTR ptr_)
{
    ANIMATE_INFO*	infoPtr = (ANIMATE_INFO*)ptr_;

    EnterCriticalSection(&infoPtr->cs);
    ANIMATE_DrawFrame(infoPtr);
    LeaveCriticalSection(&infoPtr->cs);
}

static LRESULT ANIMATE_Play(HWND hWnd, WPARAM wParam, LPARAM lParam)
{
    ANIMATE_INFO *infoPtr = ANIMATE_GetInfoPtr(hWnd);

    /* nothing opened */
    if (!infoPtr->hMMio)
	return FALSE;

    if (infoPtr->hService || infoPtr->uTimer) {
	FIXME("Already playing ? what should I do ??\n");
	ANIMATE_DoStop(infoPtr);
    }

    infoPtr->nFromFrame = (INT)LOWORD(lParam);
    infoPtr->nToFrame   = (INT)HIWORD(lParam);
    infoPtr->nLoop      = (INT)wParam;

    if (infoPtr->nToFrame == 0xFFFF)
	infoPtr->nToFrame = infoPtr->mah.dwTotalFrames - 1;

    TRACE("(repeat=%d from=%d to=%d);\n", 
	  infoPtr->nLoop, infoPtr->nFromFrame, infoPtr->nToFrame);

    if (infoPtr->nFromFrame >= infoPtr->nToFrame ||
	infoPtr->nToFrame >= infoPtr->mah.dwTotalFrames)
	return FALSE;

    infoPtr->currFrame = infoPtr->nFromFrame;

    if (GetWindowLongA(hWnd, GWL_STYLE) & ACS_TIMER) {
	TRACE("Using a timer\n");
	/* create a timer to display AVI */
	infoPtr->uTimer = SetTimer(hWnd, 1, infoPtr->mah.dwMicroSecPerFrame / 1000, NULL);
    } else {
	TRACE("Using the service thread\n");
	/* time is in <20>s */
	infoPtr->hService = SERVICE_AddTimer(infoPtr->mah.dwMicroSecPerFrame / 1000, 
					     ANIMATE_ServiceCallback, (DWORD)infoPtr);
    }
	
    ANIMATE_Notify(infoPtr, ACN_START);

    return TRUE;
}


static BOOL ANIMATE_GetAviInfo(ANIMATE_INFO *infoPtr)
{
    MMCKINFO		ckMainRIFF;
    MMCKINFO		mmckHead;
    MMCKINFO		mmckList;
    MMCKINFO		mmckInfo;
    DWORD		numFrame;
    DWORD		insize;

    if (infoPtr->fnmmioDescend(infoPtr->hMMio, &ckMainRIFF, NULL, 0) != 0) {
	WARN("Can't find 'RIFF' chunk\n");
	return FALSE;
    }

    if ((ckMainRIFF.ckid != FOURCC_RIFF) ||
	(ckMainRIFF.fccType != mmioFOURCC('A', 'V', 'I', ' '))) {
	WARN("Can't find 'AVI ' chunk\n");
	return FALSE;
    }

    mmckHead.fccType = mmioFOURCC('h', 'd', 'r', 'l');
    if (infoPtr->fnmmioDescend(infoPtr->hMMio, &mmckHead, &ckMainRIFF, MMIO_FINDLIST) != 0) {
	WARN("Can't find 'hdrl' list\n");
	return FALSE;
    }

    mmckInfo.ckid = mmioFOURCC('a', 'v', 'i', 'h');
    if (infoPtr->fnmmioDescend(infoPtr->hMMio, &mmckInfo, &mmckHead, MMIO_FINDCHUNK) != 0) {
	WARN("Can't find 'avih' chunk\n");
	return FALSE;
    }

    infoPtr->fnmmioRead(infoPtr->hMMio, (LPSTR)&infoPtr->mah, sizeof(infoPtr->mah));
    TRACE("mah.dwMicroSecPerFrame=%ld\n", 	infoPtr->mah.dwMicroSecPerFrame);
    TRACE("mah.dwMaxBytesPerSec=%ld\n", 	infoPtr->mah.dwMaxBytesPerSec);
    TRACE("mah.dwPaddingGranularity=%ld\n", 	infoPtr->mah.dwPaddingGranularity);
    TRACE("mah.dwFlags=%ld\n", 			infoPtr->mah.dwFlags);
    TRACE("mah.dwTotalFrames=%ld\n", 		infoPtr->mah.dwTotalFrames);
    TRACE("mah.dwInitialFrames=%ld\n", 		infoPtr->mah.dwInitialFrames);
    TRACE("mah.dwStreams=%ld\n", 		infoPtr->mah.dwStreams);
    TRACE("mah.dwSuggestedBufferSize=%ld\n",	infoPtr->mah.dwSuggestedBufferSize);
    TRACE("mah.dwWidth=%ld\n", 			infoPtr->mah.dwWidth);
    TRACE("mah.dwHeight=%ld\n", 		infoPtr->mah.dwHeight);
    infoPtr->fnmmioAscend(infoPtr->hMMio, &mmckInfo, 0);

    mmckList.fccType = mmioFOURCC('s', 't', 'r', 'l');
    if (infoPtr->fnmmioDescend(infoPtr->hMMio, &mmckList, &mmckHead, MMIO_FINDLIST) != 0) {
	WARN("Can't find 'strl' list\n");
	return FALSE;
    }

    mmckInfo.ckid = mmioFOURCC('s', 't', 'r', 'h');
    if (infoPtr->fnmmioDescend(infoPtr->hMMio, &mmckInfo, &mmckList, MMIO_FINDCHUNK) != 0) {
	WARN("Can't find 'strh' chunk\n");
	return FALSE;
    }

    infoPtr->fnmmioRead(infoPtr->hMMio, (LPSTR)&infoPtr->ash, sizeof(infoPtr->ash));
    TRACE("ash.fccType='%c%c%c%c'\n", 		LOBYTE(LOWORD(infoPtr->ash.fccType)), 
	                                        HIBYTE(LOWORD(infoPtr->ash.fccType)), 
	                                        LOBYTE(HIWORD(infoPtr->ash.fccType)), 
	                                        HIBYTE(HIWORD(infoPtr->ash.fccType)));
    TRACE("ash.fccHandler='%c%c%c%c'\n",	LOBYTE(LOWORD(infoPtr->ash.fccHandler)), 
	                                        HIBYTE(LOWORD(infoPtr->ash.fccHandler)), 
	                                        LOBYTE(HIWORD(infoPtr->ash.fccHandler)), 
	                                        HIBYTE(HIWORD(infoPtr->ash.fccHandler)));
    TRACE("ash.dwFlags=%ld\n", 			infoPtr->ash.dwFlags);
    TRACE("ash.wPriority=%d\n", 		infoPtr->ash.wPriority);
    TRACE("ash.wLanguage=%d\n", 		infoPtr->ash.wLanguage);
    TRACE("ash.dwInitialFrames=%ld\n", 		infoPtr->ash.dwInitialFrames);
    TRACE("ash.dwScale=%ld\n", 			infoPtr->ash.dwScale);
    TRACE("ash.dwRate=%ld\n", 			infoPtr->ash.dwRate);
    TRACE("ash.dwStart=%ld\n", 			infoPtr->ash.dwStart);
    TRACE("ash.dwLength=%ld\n", 		infoPtr->ash.dwLength);
    TRACE("ash.dwSuggestedBufferSize=%ld\n", 	infoPtr->ash.dwSuggestedBufferSize);
    TRACE("ash.dwQuality=%ld\n", 		infoPtr->ash.dwQuality);
    TRACE("ash.dwSampleSize=%ld\n", 		infoPtr->ash.dwSampleSize);
    TRACE("ash.rcFrame=(%d,%d,%d,%d)\n", 	infoPtr->ash.rcFrame.top, infoPtr->ash.rcFrame.left, 
	  infoPtr->ash.rcFrame.bottom, infoPtr->ash.rcFrame.right);
    infoPtr->fnmmioAscend(infoPtr->hMMio, &mmckInfo, 0);

    mmckInfo.ckid = mmioFOURCC('s', 't', 'r', 'f');
    if (infoPtr->fnmmioDescend(infoPtr->hMMio, &mmckInfo, &mmckList, MMIO_FINDCHUNK) != 0) {
	WARN("Can't find 'strh' chunk\n");
	return FALSE;
    }

    infoPtr->inbih = HeapAlloc(GetProcessHeap(), 0, mmckInfo.cksize);
    if (!infoPtr->inbih) {
	WARN("Can't alloc input BIH\n");
	return FALSE;
    }

    infoPtr->fnmmioRead(infoPtr->hMMio, (LPSTR)infoPtr->inbih, mmckInfo.cksize);
    TRACE("bih.biSize=%ld\n", 		infoPtr->inbih->biSize);
    TRACE("bih.biWidth=%ld\n", 		infoPtr->inbih->biWidth);
    TRACE("bih.biHeight=%ld\n", 	infoPtr->inbih->biHeight);
    TRACE("bih.biPlanes=%d\n", 		infoPtr->inbih->biPlanes);
    TRACE("bih.biBitCount=%d\n", 	infoPtr->inbih->biBitCount);
    TRACE("bih.biCompression=%ld\n", 	infoPtr->inbih->biCompression);
    TRACE("bih.biSizeImage=%ld\n", 	infoPtr->inbih->biSizeImage);
    TRACE("bih.biXPelsPerMeter=%ld\n", 	infoPtr->inbih->biXPelsPerMeter);
    TRACE("bih.biYPelsPerMeter=%ld\n", 	infoPtr->inbih->biYPelsPerMeter);
    TRACE("bih.biClrUsed=%ld\n", 	infoPtr->inbih->biClrUsed);
    TRACE("bih.biClrImportant=%ld\n", 	infoPtr->inbih->biClrImportant);
    infoPtr->fnmmioAscend(infoPtr->hMMio, &mmckInfo, 0);

    infoPtr->fnmmioAscend(infoPtr->hMMio, &mmckList, 0);
    
#if 0
    /* an AVI has 0 or 1 video stream, and to be animated should not contain
     * an audio stream, so only one strl is allowed 
     */
    mmckList.fccType = mmioFOURCC('s', 't', 'r', 'l');
    if (infoPtr->fnmmioDescend(infoPtr->hMMio, &mmckList, &mmckHead, MMIO_FINDLIST) == 0) {
	WARN("There should be a single 'strl' list\n");
	return FALSE;
    }
#endif

    infoPtr->fnmmioAscend(infoPtr->hMMio, &mmckHead, 0);

    /* no need to read optional JUNK chunk */

    mmckList.fccType = mmioFOURCC('m', 'o', 'v', 'i');
    if (infoPtr->fnmmioDescend(infoPtr->hMMio, &mmckList, &ckMainRIFF, MMIO_FINDLIST) != 0) {
	WARN("Can't find 'movi' list\n");
	return FALSE;
    }

    /* FIXME: should handle the 'rec ' LIST when present */

    infoPtr->lpIndex = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, 
				 infoPtr->mah.dwTotalFrames * sizeof(DWORD));
    if (!infoPtr->lpIndex) {
	WARN("Can't alloc index array\n");
	return FALSE;
    }

    numFrame = insize = 0;
    while (infoPtr->fnmmioDescend(infoPtr->hMMio, &mmckInfo, &mmckList, 0) == 0 && 
	   numFrame < infoPtr->mah.dwTotalFrames) {
	infoPtr->lpIndex[numFrame] = mmckInfo.dwDataOffset;
	if (insize < mmckInfo.cksize)
	    insize = mmckInfo.cksize;
	numFrame++;
	infoPtr->fnmmioAscend(infoPtr->hMMio, &mmckInfo, 0);
    }
    if (numFrame != infoPtr->mah.dwTotalFrames) {
	WARN("Found %ld frames (/%ld)\n", numFrame, infoPtr->mah.dwTotalFrames);
	return FALSE;
    }
    if (insize > infoPtr->ash.dwSuggestedBufferSize) {
	WARN("insize=%ld suggestedSize=%ld\n", insize, infoPtr->ash.dwSuggestedBufferSize);
	infoPtr->ash.dwSuggestedBufferSize = insize;
    }

    infoPtr->indata = HeapAlloc(GetProcessHeap(), 0, infoPtr->ash.dwSuggestedBufferSize);
    if (!infoPtr->indata) {
	WARN("Can't alloc input buffer\n");
	return FALSE;
    }

    return TRUE;
}


static BOOL    ANIMATE_GetAviCodec(ANIMATE_INFO *infoPtr)
{
    DWORD	outSize;

    /* check uncompressed AVI */
    if (infoPtr->ash.fccHandler == mmioFOURCC('D', 'I', 'B', ' ') ||
	infoPtr->ash.fccHandler == mmioFOURCC('R', 'L', 'E', ' ')) {
	infoPtr->hic = 0;
	return TRUE;
    }

    /* try to get a decompressor for that type */
    infoPtr->hic = (infoPtr->fnICOpen)(ICTYPE_VIDEO, 
				       infoPtr->ash.fccHandler, 
				       ICMODE_DECOMPRESS);
    if (!infoPtr->hic) {
	WARN("Can't load codec for the file\n");
	return FALSE;
    }
    
    outSize = (infoPtr->fnICSendMessage)(infoPtr->hic, 
					 ICM_DECOMPRESS_GET_FORMAT, 
					 (DWORD)infoPtr->inbih, 0L);
    infoPtr->outbih = HeapAlloc(GetProcessHeap(), 0, outSize);
    if (!infoPtr->outbih) {
	WARN("Can't alloc output BIH\n");
	return FALSE;
    }

    if ((infoPtr->fnICSendMessage)(infoPtr->hic, ICM_DECOMPRESS_GET_FORMAT, 
				   (DWORD)infoPtr->inbih, 
				   (DWORD)infoPtr->outbih) != ICERR_OK) {
	WARN("Can't get output BIH\n");
	return FALSE;
    }

    infoPtr->outdata = HeapAlloc(GetProcessHeap(), 0, infoPtr->outbih->biSizeImage);
    if (!infoPtr->outdata) {
	WARN("Can't alloc output buffer\n");
	return FALSE;
    }

    if ((infoPtr->fnICSendMessage)(infoPtr->hic, ICM_DECOMPRESS_BEGIN, 
				   (DWORD)infoPtr->inbih, 
				   (DWORD)infoPtr->outbih) != ICERR_OK) {
	WARN("Can't begin decompression\n");
	return FALSE;
    }

    return TRUE;
}

static void ANIMATE_Center(ANIMATE_INFO *infoPtr)
{
    int x,y,dx,dy;
    RECT Rect;
    HWND hWnd=infoPtr->hWnd;
    HWND hWndParent=GetWindowLongA(hWnd, GWL_HWNDPARENT);

    if (!hWndParent || !GetWindowRect(hWndParent, &Rect)) return;

    dx=Rect.right-Rect.left+1;
    dy=Rect.bottom-Rect.top+1;
    x=infoPtr->mah.dwWidth < dx ? (dx-infoPtr->mah.dwWidth) >> 1 : 0;
    y=infoPtr->mah.dwHeight < dy ? (dy-infoPtr->mah.dwHeight) >> 1 : 0;

    MoveWindow(hWnd, x, y, infoPtr->mah.dwWidth, infoPtr->mah.dwHeight, TRUE);
}

static LRESULT ANIMATE_OpenA(HWND hWnd, WPARAM wParam, LPARAM lParam)
{
    ANIMATE_INFO *infoPtr = ANIMATE_GetInfoPtr(hWnd);
    HINSTANCE hInstance = (HINSTANCE)wParam;

    ANIMATE_Free(infoPtr);

    if (!lParam) {
	TRACE("Closing avi!\n");
	return TRUE;
    }
    
    if (!hInstance)
       hInstance = GetWindowLongA(hWnd, GWL_HINSTANCE);

    if (HIWORD(lParam)) {
	TRACE("(\"%s\");\n", (LPSTR)lParam);

	if (!ANIMATE_LoadResA(infoPtr, hInstance, (LPSTR)lParam)) {
	    TRACE("No AVI resource found!\n");
	    if (!ANIMATE_LoadFileA(infoPtr, (LPSTR)lParam)) {
		WARN("No AVI file found!\n");
		return FALSE;
	    }
	}
    } else {
	TRACE("(%u);\n", (WORD)LOWORD(lParam));

	if (!ANIMATE_LoadResA(infoPtr, hInstance,
			      MAKEINTRESOURCEA((INT)lParam))) {
	    WARN("No AVI resource found!\n");
	    return FALSE;
	}
    }

    if (!ANIMATE_GetAviInfo(infoPtr)) {
	WARN("Can't get AVI information\n");
	ANIMATE_Free(infoPtr);
	return FALSE;
    }

    if (!ANIMATE_GetAviCodec(infoPtr)) {
	WARN("Can't get AVI Codec\n");
	ANIMATE_Free(infoPtr);
	return FALSE;
    }

    if (GetWindowLongA(hWnd, GWL_STYLE) & ACS_CENTER) {

	ANIMATE_Center(infoPtr);

    } else {
	/*	MoveWindow(hWnd, 0, 0, infoPtr->mah.dwWidth, infoPtr->mah.dwHeight, FALSE);*/
	SetWindowPos(hWnd, 0, 0, 0, infoPtr->mah.dwWidth, infoPtr->mah.dwHeight,
		     SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOZORDER);
    }

    if (GetWindowLongA(hWnd, GWL_STYLE) & ACS_TRANSPARENT) {
	FIXME("ACS_TRANSPARENT: NIY\n");
    }

    if (GetWindowLongA(hWnd, GWL_STYLE) & ACS_AUTOPLAY) {
	return ANIMATE_Play(hWnd, -1, (LPARAM)MAKELONG(0, infoPtr->mah.dwTotalFrames-1));
    }

    return TRUE;
}


/* << ANIMATE_Open32W >> */

static LRESULT ANIMATE_Stop(HWND hWnd, WPARAM wParam, LPARAM lParam)
{
    ANIMATE_INFO *infoPtr = ANIMATE_GetInfoPtr(hWnd);

    /* nothing opened */
    if (!infoPtr->hMMio)
	return FALSE;

    ANIMATE_DoStop(infoPtr);
    return TRUE;
}


static LRESULT ANIMATE_Create(HWND hWnd, WPARAM wParam, LPARAM lParam)
{
    ANIMATE_INFO*	infoPtr;
    HMODULE		hModule = LoadLibraryA("msvfw32.dll");

    if (!hModule)
	return FALSE;

    /* allocate memory for info structure */
    infoPtr = (ANIMATE_INFO *)COMCTL32_Alloc(sizeof(ANIMATE_INFO));
    if (!infoPtr) {
	ERR("could not allocate info memory!\n");
	return 0;
    }

    /* Temporary hack until we get dllglue up and running */
    infoPtr->fnICOpen        = (void*)GetProcAddress(hModule, "ICOpen");
    infoPtr->fnICClose       = (void*)GetProcAddress(hModule, "ICClose");
    infoPtr->fnICSendMessage = (void*)GetProcAddress(hModule, "ICSendMessage");
    infoPtr->fnICDecompress  = (void*)GetProcAddress(hModule, "ICDecompress");

    TRACE("Animate style=0x%08lx, parent=%08lx\n", GetWindowLongA(hWnd, GWL_STYLE), (DWORD)GetParent(hWnd));

    /* store crossref hWnd <-> info structure */
    SetWindowLongA(hWnd, 0, (DWORD)infoPtr);
    infoPtr->hWnd = hWnd;

    hModWinmm = LoadLibraryA("WINMM");

    infoPtr->fnmmioOpenA = (void*)GetProcAddress(hModWinmm, "mmioOpenA");
    infoPtr->fnmmioClose = (void*)GetProcAddress(hModWinmm, "mmioClose");
    infoPtr->fnmmioAscend = (void*)GetProcAddress(hModWinmm, "mmioAscend");
    infoPtr->fnmmioDescend = (void*)GetProcAddress(hModWinmm, "mmioDescend");
    infoPtr->fnmmioSeek = (void*)GetProcAddress(hModWinmm, "mmioSeek");
    infoPtr->fnmmioRead = (void*)GetProcAddress(hModWinmm, "mmioRead");

    InitializeCriticalSection(&infoPtr->cs);
    
    return 0;
}


static LRESULT ANIMATE_Destroy(HWND hWnd, WPARAM wParam, LPARAM lParam)
{
    ANIMATE_INFO *infoPtr = ANIMATE_GetInfoPtr(hWnd);


    /* free avi data */
    ANIMATE_Free(infoPtr);

    /* free animate info data */
    COMCTL32_Free(infoPtr);
    SetWindowLongA(hWnd, 0, 0);

    FreeLibrary(hModWinmm);
    return 0;
}


static LRESULT ANIMATE_EraseBackground(HWND hWnd, WPARAM wParam, LPARAM lParam)
{
    RECT rect;

    GetClientRect(hWnd, &rect);
#if 0
    HBRUSH hBrush = CreateSolidBrush(infoPtr->clrBk);

    FillRect((HDC)wParam, &rect, hBrush);
    DeleteObject(hBrush);
#else
    FillRect((HDC)wParam, &rect, GetSysColorBrush(COLOR_WINDOW));
#endif
    return TRUE;
}

static LRESULT WINAPI ANIMATE_Size(HWND hWnd, WPARAM wParam, LPARAM lParam)
{
    ANIMATE_INFO *infoPtr = ANIMATE_GetInfoPtr(hWnd);

    if (GetWindowLongA(hWnd, GWL_STYLE) & ACS_CENTER) {
	if (infoPtr->hMMio) {
	    /* centers the animation in the control, invalidates the control
	     */
	    ANIMATE_Center(infoPtr);
	}
	InvalidateRect(hWnd, NULL, TRUE);
    }
    return TRUE;
}

static LRESULT WINAPI ANIMATE_WindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    TRACE("hwnd=%x msg=%x wparam=%x lparam=%lx\n", hWnd, uMsg, wParam, lParam);
    if (!ANIMATE_GetInfoPtr(hWnd) && (uMsg != WM_NCCREATE))
	return DefWindowProcA(hWnd, uMsg, wParam, lParam);
    switch (uMsg)
    {
    case ACM_OPENA:
	return ANIMATE_OpenA(hWnd, wParam, lParam);
	
	/*	case ACM_OPEN32W: FIXME!! */
	/*	    return ANIMATE_Open32W(hWnd, wParam, lParam); */
	
    case ACM_PLAY:
	return ANIMATE_Play(hWnd, wParam, lParam);
	
    case ACM_STOP:
	return ANIMATE_Stop(hWnd, wParam, lParam);
	
    case WM_NCCREATE:
	ANIMATE_Create(hWnd, wParam, lParam);
	return DefWindowProcA(hWnd, uMsg, wParam, lParam);
	
    case WM_NCHITTEST:
	return HTTRANSPARENT;

    case WM_DESTROY:
	ANIMATE_Destroy(hWnd, wParam, lParam);
	return DefWindowProcA(hWnd, uMsg, wParam, lParam);
	
    case WM_ERASEBKGND:
	ANIMATE_EraseBackground(hWnd, wParam, lParam);
	break;

    /*	case WM_STYLECHANGED: FIXME shall we do something ?? */

    case WM_TIMER:
	return ANIMATE_DrawFrame(ANIMATE_GetInfoPtr(hWnd));
	
    case WM_CLOSE:
	ANIMATE_Free(ANIMATE_GetInfoPtr(hWnd));
	return TRUE;

    case WM_PAINT:
	if (wParam) {
	    ANIMATE_PaintFrame(ANIMATE_GetInfoPtr(hWnd), (HDC)wParam);
	} else {
	    PAINTSTRUCT ps;
 	    HDC hDC = BeginPaint(hWnd, &ps);
	    ANIMATE_PaintFrame(ANIMATE_GetInfoPtr(hWnd), hDC);
	    EndPaint(hWnd, &ps);
	}
	break;

    case WM_SIZE:
	ANIMATE_Size(hWnd, wParam, lParam);
	return DefWindowProcA(hWnd, uMsg, wParam, lParam);

    default:
	if (uMsg >= WM_USER)
	    ERR("unknown msg %04x wp=%08x lp=%08lx\n", uMsg, wParam, lParam);
	
	return DefWindowProcA(hWnd, uMsg, wParam, lParam);
    }
    return 0;
}


void ANIMATE_Register(void)
{
    WNDCLASSA wndClass;

    ZeroMemory(&wndClass, sizeof(WNDCLASSA));
    wndClass.style         = CS_GLOBALCLASS | CS_DBLCLKS;
    wndClass.lpfnWndProc   = (WNDPROC)ANIMATE_WindowProc;
    wndClass.cbClsExtra    = 0;
    wndClass.cbWndExtra    = sizeof(ANIMATE_INFO *);
    wndClass.hCursor       = LoadCursorA(0, IDC_ARROWA);
    wndClass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1);
    wndClass.lpszClassName = ANIMATE_CLASSA;
 
    RegisterClassA(&wndClass);
}


void ANIMATE_Unregister(void)
{
    UnregisterClassA(ANIMATE_CLASSA, (HINSTANCE)NULL);
}