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windows-nt/Source/XPSP1/NT/multimedia/media/avi/avifile/afclip.c

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2020-09-26 03:20:57 -05:00
/****************************************************************************
*
* AVICLIP.C
*
* Clipboard support for AVIFile
*
* Copyright (c) 1992 - 1995 Microsoft Corporation. All Rights Reserved.
*
* You have a royalty-free right to use, modify, reproduce and
* distribute the Sample Files (and/or any modified version) in
* any way you find useful, provided that you agree that
* Microsoft has no warranty obligations or liability for any
* Sample Application Files which are modified.
*
***************************************************************************/
#include <win32.h>
#include <ole2.h>
#include <vfw.h>
#include "avimem.h"
#include "enumfetc.h"
#include "debug.h"
//#define TRYLINKS
#ifdef TRYLINKS
static SZCODE aszLink[] = TEXT("OwnerLink");
#endif
#ifndef _WIN32
#define AVIStreamInfoW AVIStreamInfo
#endif
/* From avifps.h.... */
BOOL FAR TaskHasExistingProxies(void);
#define OWNER_DISPLAY 0
STDMETHODIMP AVIClipQueryInterface(LPDATAOBJECT lpd, REFIID riid, LPVOID FAR* ppvObj);
STDMETHODIMP_(ULONG) AVIClipAddRef(LPDATAOBJECT lpd);
STDMETHODIMP_(ULONG) AVIClipRelease(LPDATAOBJECT lpd);
STDMETHODIMP AVIClipGetData(LPDATAOBJECT lpd, LPFORMATETC pformatetcIn,
LPSTGMEDIUM pmedium );
STDMETHODIMP AVIClipGetDataHere(LPDATAOBJECT lpd, LPFORMATETC pformatetc,
LPSTGMEDIUM pmedium );
STDMETHODIMP AVIClipQueryGetData(LPDATAOBJECT lpd, LPFORMATETC pformatetc );
STDMETHODIMP AVIClipGetCanonicalFormatEtc(LPDATAOBJECT lpd, LPFORMATETC pformatetc,
LPFORMATETC pformatetcOut);
STDMETHODIMP AVIClipSetData(LPDATAOBJECT lpd, LPFORMATETC pformatetc, STGMEDIUM FAR * pmedium,
BOOL fRelease);
STDMETHODIMP AVIClipEnumFormatEtc(LPDATAOBJECT lpd, DWORD dwDirection,
LPENUMFORMATETC FAR* ppenumFormatEtc);
STDMETHODIMP AVIClipDAdvise(LPDATAOBJECT lpd, FORMATETC FAR* pFormatetc, DWORD advf,
LPADVISESINK pAdvSink, DWORD FAR* pdwConnection);
STDMETHODIMP AVIClipDUnadvise(LPDATAOBJECT lpd, DWORD dwConnection);
STDMETHODIMP AVIClipEnumDAdvise(LPDATAOBJECT lpd, LPENUMSTATDATA FAR* ppenumAdvise);
IDataObjectVtbl AVIClipVtbl = {
AVIClipQueryInterface,
AVIClipAddRef,
AVIClipRelease,
AVIClipGetData,
AVIClipGetDataHere,
AVIClipQueryGetData,
AVIClipGetCanonicalFormatEtc,
AVIClipSetData,
AVIClipEnumFormatEtc,
AVIClipDAdvise,
AVIClipDUnadvise,
AVIClipEnumDAdvise
};
#define N_FORMATS (sizeof(FormatList) / sizeof(FormatList[0]))
FORMATETC FormatList[] = {
// CF_WAVE must be first, see AVIPutFileOnClipboard
{CF_WAVE, NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL},
{CF_DIB, NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL},
// CF_PALETTE must be last, see AVIPutFileOnClipboard
{CF_PALETTE, NULL, DVASPECT_CONTENT, -1, TYMED_GDI}
};
#define AVICLIP_MAGIC 0x42424242
typedef struct {
IDataObjectVtbl FAR * lpVtbl;
DWORD Magic;
ULONG ulRefCount;
PAVIFILE pf;
WORD wFormats;
LPFORMATETC lpFormats;
//!!! what about IDataView
//!!! what about a IGetFrame
HWND hwndMci;
PGETFRAME pgf;
} AVICLIP, FAR * LPAVICLIP;
#if OWNER_DISPLAY
static LRESULT CALLBACK _loadds ClipboardWindowProc(HWND hwnd, UINT msg, WPARAM wParam, LONG lParam);
static WNDPROC OldClipboardWindowProc;
static LPAVICLIP lpcClipboard;
#endif
#include "olehack.h"
long glOleRefCount = 0;
HRESULT FAR PASCAL InitOle(BOOL fForceLoad)
{
UINT w;
++glOleRefCount;
if ( glOleRefCount == 1 ) {
#ifdef DEBUG
HRESULT hr = OleInitialize(NULL);
if (hr != S_OK) {
DPF("InitOle: OleInitialize returned %8x (%x)\n", hr, GetLastError());
} else {
DPF2("InitOle: OleInitialize returned S_OK\n");
}
return(hr);
#else
return OleInitialize(NULL);
#endif
}
return S_OK;
}
void FAR PASCAL TermOle(void)
{
// Someone's calling us too many times... protect them from their selves
//
if (glOleRefCount == 0) {
DPF("TermOle called too many times...\n");
return;
}
--glOleRefCount;
if (glOleRefCount > 0) {
DPF2("Not freeing OLE32.DLL, extra init count still %d\n", glOleRefCount);
return;
}
OleUninitialize();
}
STDAPI AVIGetDataObject(PAVIFILE pf, LPDATAOBJECT FAR *ppDataObj)
{
LPAVICLIP lpc;
PAVISTREAM ps;
*ppDataObj = NULL;
if (pf == NULL) {
return NOERROR;
}
AVIFileAddRef(pf);
lpc = (LPAVICLIP) GlobalAllocPtr(GHND | GMEM_SHARE, sizeof(AVICLIP));
if (!lpc)
return ResultFromScode(AVIERR_MEMORY);
InitOle(TRUE);
lpc->lpVtbl = &AVIClipVtbl;
lpc->ulRefCount = 1;
lpc->pf = pf;
lpc->wFormats = N_FORMATS;
lpc->lpFormats = FormatList;
lpc->Magic = AVICLIP_MAGIC;
//
// if there is no video in the file, dont offer video
// CF_WAVE must be first.
//
if (AVIFileGetStream(pf, &ps, streamtypeVIDEO, 0L) != NOERROR) {
lpc->wFormats = 1;
}
else {
//
// if the video format is higher than 8bpp dont offer a palette
// CF_PALETTE must be last.
//
AVISTREAMINFOW strhdr;
BITMAPINFOHEADER bi;
DWORD dwcbFormat;
// get the stream header
AVIStreamInfoW(ps, &strhdr, sizeof(strhdr));
// now read the format of this thing
dwcbFormat = sizeof(bi);
AVIStreamReadFormat(ps, strhdr.dwStart, (LPVOID)&bi, (LONG FAR *)&dwcbFormat);
// if it is true color (i.e., > 8bpp) then don't use the palette
if (bi.biBitCount > 8) {
DPF("Turning off CF_PALETTE now\n");
lpc->wFormats--; // don't use CF_PALETTE
}
ps->lpVtbl->Release(ps);
}
//
// if there is no audio in the file, dont offer audio
// CF_WAVE must be first.
//
if (AVIFileGetStream(pf, &ps, streamtypeAUDIO, 0L) != NOERROR) {
lpc->wFormats--;
lpc->lpFormats++;
}
else {
ps->lpVtbl->Release(ps);
}
*ppDataObj = (LPDATAOBJECT) lpc;
return 0;
}
/**************************************************************************
* @doc EXTERNAL AVIPutFileOnClipboard
*
* @api HRESULT | AVIPutFileOnClipboard | Puts a file described by the passed
* in PAVIFILE onto the clipboard.
*
* @parm PAVIFILE | pfile | Handle representing the file to put on the clipboard.
*
* @comm
*
* @rdesc Returns zero on success or an error code.
*
* @xref AVIPutStreamOnClipboard AVIGetFromClipboard
*
*************************************************************************/
STDAPI AVIPutFileOnClipboard(PAVIFILE pf)
{
LPDATAOBJECT lpd;
HRESULT hr;
InitOle(TRUE);
hr = AVIGetDataObject(pf, &lpd);
hr = OleSetClipboard(lpd);
if (lpd) {
lpd->lpVtbl->Release(lpd);
#if OWNER_DISPLAY
lpcClipboard = lpc;
//
// hook the clipboard owner so we can do OWNER_DISPLAY formats
//
{
HWND hwnd = GetClipboardOwner();
if (OldClipboardWindowProc == NULL) {
if (hwnd) {
OldClipboardWindowProc = (WNDPROC)SetWindowLong(hwnd,
GWL_WNDPROC, (LONG)ClipboardWindowProc);
}
}
if (OpenClipboard(hwnd)) {
SetClipboardData(CF_OWNERDISPLAY, NULL);
CloseClipboard();
}
}
#endif
}
TermOle();
return hr;
}
/**************************************************************************
* @doc EXTERNAL AVIGetFromClipboard
*
* @api HRESULT | AVIGetFromClipboard | Get a file or stream off of the
* clipboard.
*
* @parm PAVIFILE FAR * | ppfile | Pointer to a variable that can
*
* @comm If <p ppfile> is not NULL, the function will first attempt to
* retrieve a file from the clipboard. Then, if <p ppstream> is not
* NULL, it will attempt to retrieve a stream.
*
* Any file or stream retrieved from the clipboard using this
* function should eventually be released with <f AVIStreamClose>
* or <f AVIFileClose>.
*
* @rdesc Returns zero on success or an error code. If there is no suitable
* data on the clipboard, no error code will be returned, but
* the returned variables will be NULL.
*
* @xref AVIPutStreamOnClipboard AVIGetFromClipboard
*
*************************************************************************/
STDAPI AVIGetFromClipboard(PAVIFILE FAR * lppf)
{
LPDATAOBJECT lpd = NULL;
HRESULT hr = NOERROR;
FORMATETC fetc;
STGMEDIUM stg;
if (!lppf)
return ResultFromScode(E_POINTER);
*lppf = NULL;
InitOle(TRUE);
OleGetClipboard(&lpd);
if (lpd) {
#ifdef DEBUGXX
// Print out lots of stuff about what's on the clipboard....
{
LPENUMFORMATETC lpEnum = NULL;
TCHAR achTemp[256];
lpd->lpVtbl->EnumFormatEtc(lpd, DATADIR_GET, &lpEnum);
if (lpEnum) {
DPF("Formats available:\n");
while(lpEnum->lpVtbl->Next(lpEnum, 1,
(LPFORMATETC)&fetc,
NULL) == NOERROR) {
achTemp[0] = TEXT('\0');
GetClipboardFormatName(fetc.cfFormat, achTemp, sizeof(achTemp)/sizeof(achTemp[0]));
DPF("\t%u\t%lu\t%ls\n", fetc.cfFormat, fetc.tymed, (LPTSTR)achTemp);
if ((fetc.cfFormat == CF_WAVE) ||
(fetc.cfFormat == CF_DIB) ||
(fetc.cfFormat == CF_RIFF) ||
(fetc.cfFormat == CF_METAFILEPICT) ||
(fetc.cfFormat == CF_BITMAP) ||
(fetc.cfFormat == CF_PENDATA))
continue;
if (fetc.tymed & TYMED_HGLOBAL) {
fetc.tymed = TYMED_HGLOBAL;
hr = lpd->lpVtbl->GetData(lpd, &fetc, &stg);
if (hr == 0) {
LPVOID lp = GlobalLock(stg.hGlobal);
DPF("%s\n", (LPSTR) lp);
GlobalUnlock(stg.hGlobal);
ReleaseStgMedium(&stg);
}
}
}
}
}
#endif
lpd->lpVtbl->QueryInterface(lpd, &IID_IAVIFile, lppf);
// Try for IAVIStream here?
#ifdef TRYLINKS
// See if there's a link to a type of file we can open....
if (!*lppf) {
UINT cfLink;
cfLink = RegisterClipboardFormat(aszLink);
fetc.cfFormat = cfLink;
fetc.ptd = 0;
fetc.dwAspect = DVASPECT_CONTENT;
fetc.lindex = -1;
fetc.tymed = TYMED_HGLOBAL;
hr = lpd->lpVtbl->GetData(lpd, &fetc, &stg);
if (hr == 0) {
LPTSTR lp = GlobalLock(stg.hGlobal);
LPTSTR lpName;
lpName = lp + lstrlen(lp) + 1;
DPF("Got CF_LINK (%s/%s) data from clipboard...\n", lp,lpName);
hr = AVIFileOpen(lppf, lpName, OF_READ | OF_SHARE_DENY_WRITE, NULL);
if (hr == 0) {
DPF("Opened file from link!\n");
// !!! If the app name is "MPlayer", we could get
// the selection out of the data....
}
GlobalUnlock(stg.hGlobal);
ReleaseStgMedium(&stg);
}
}
#endif
if (!*lppf) {
PAVISTREAM aps[2];
int cps = 0;
fetc.cfFormat = CF_DIB;
fetc.ptd = 0;
fetc.dwAspect = DVASPECT_CONTENT;
fetc.lindex = -1;
fetc.tymed = TYMED_HGLOBAL;
// CF_BITMAP, CF_PALETTE?
hr = lpd->lpVtbl->GetData(lpd, &fetc, &stg);
if (hr == 0) {
DPF("Got CF_DIB data from clipboard...\n");
hr = AVIMakeStreamFromClipboard(CF_DIB, stg.hGlobal, &aps[cps]);
if (hr == 0) {
cps++;
}
ReleaseStgMedium(&stg);
}
fetc.cfFormat = CF_WAVE;
fetc.ptd = 0;
fetc.dwAspect = DVASPECT_CONTENT;
fetc.lindex = -1;
fetc.tymed = TYMED_HGLOBAL;
hr = lpd->lpVtbl->GetData(lpd, &fetc, &stg);
if (hr == 0) {
DPF("Got CF_WAVE data from clipboard...\n");
hr = AVIMakeStreamFromClipboard(CF_WAVE, stg.hGlobal, &aps[cps]);
if (hr == 0) {
cps++;
}
ReleaseStgMedium(&stg);
}
if (cps) {
hr = AVIMakeFileFromStreams(lppf, cps, aps);
while (cps-- > 0)
AVIStreamClose(aps[cps]);
} else
hr = ResultFromScode(AVIERR_NODATA);
}
lpd->lpVtbl->Release(lpd);
}
TermOle();
return hr;
}
/**************************************************************************
* @doc EXTERNAL AVIClearClipboard
*
* @api HRESULT | AVIClearClipboard | Releases any file or stream that
* has been put on the Clipboard.
*
* @comm Applications should use this function before exiting if they use
* other Clipboard routines. Do not use this function just to
* clear the clipboard; it might not return until other
* applications have finished using the data placed on the Clipboard.
* Ideally, call this function after hiding your application's windows.
*
* @rdesc Returns zero on success or an error code.
*
* @xref AVIPutStreamOnClipboard AVIGetFromClipboard
*
*************************************************************************/
STDAPI AVIClearClipboard(void)
{
HRESULT hr;
InitOle(TRUE);
hr = OleFlushClipboard();
while (TaskHasExistingProxies()) {
MSG msg;
DPF("AVIClearClipboard: Waiting while streams in use....\n");
while(PeekMessage(&msg,NULL,0,0,PM_REMOVE)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
TermOle();
return hr;
}
typedef LPBITMAPINFOHEADER PDIB;
#ifndef BI_BITFIELDS
#define BI_BITFIELDS 3
#endif
#ifndef HALFTONE
#define HALFTONE COLORONCOLOR
#endif
#define DibCompression(lpbi) (DWORD)(((LPBITMAPINFOHEADER)(lpbi))->biCompression)
#define DibColors(lpbi) ((RGBQUAD FAR *)((LPBYTE)(lpbi) + (int)(lpbi)->biSize))
#define DibNumColors(lpbi) ((lpbi)->biClrUsed == 0 && (lpbi)->biBitCount <= 8 \
? (int)(1 << (int)(lpbi)->biBitCount) \
: (int)(lpbi)->biClrUsed)
/*
* CreateBIPalette()
*
* Given a Pointer to a BITMAPINFO struct will create a
* a GDI palette object from the color table.
*
*/
HPALETTE DibCreatePalette(PDIB pdib)
{
LOGPALETTE *pPal;
HPALETTE hpal = NULL;
int nNumColors;
int i;
RGBQUAD FAR * pRgb;
if (!pdib)
return NULL;
nNumColors = DibNumColors(pdib);
if (nNumColors == 3 && DibCompression(pdib) == BI_BITFIELDS)
nNumColors = 0;
if (nNumColors > 0)
{
pRgb = DibColors(pdib);
pPal = (LOGPALETTE*)LocalAlloc(LPTR,sizeof(LOGPALETTE) + nNumColors * sizeof(PALETTEENTRY));
if (!pPal)
goto exit;
pPal->palNumEntries = (WORD) nNumColors;
pPal->palVersion = 0x300;
for (i = 0; i < nNumColors; i++)
{
pPal->palPalEntry[i].peRed = pRgb->rgbRed;
pPal->palPalEntry[i].peGreen = pRgb->rgbGreen;
pPal->palPalEntry[i].peBlue = pRgb->rgbBlue;
pPal->palPalEntry[i].peFlags = (BYTE)0;
pRgb++;
}
hpal = CreatePalette(pPal);
LocalFree((HLOCAL)pPal);
}
else
{
#ifdef _WIN32
HDC hdc = GetDC(NULL);
hpal = CreateHalftonePalette(hdc);
ReleaseDC(NULL, hdc);
#endif
}
exit:
return hpal;
}
STDMETHODIMP AVIClipQueryInterface(LPDATAOBJECT lpd, REFIID riid, LPVOID FAR* ppvObj)
{
LPAVICLIP lpc = (LPAVICLIP) lpd;
SCODE scode;
if (IsEqualIID(riid, &IID_IDataObject) ||
IsEqualIID(riid, &IID_IUnknown)) {
DPF2("Clip %p: Usage++=%lx\n", lpd, lpc->ulRefCount + 1);
++lpc->ulRefCount;
*ppvObj = lpd;
scode = S_OK;
}
else if (lpc->pf && IsEqualIID(riid, &IID_IAVIFile)) {
AVIFileAddRef(lpc->pf);
*ppvObj = lpc->pf;
scode = S_OK;
}
else { // unsupported interface
*ppvObj = NULL;
scode = E_NOINTERFACE;
}
return ResultFromScode(scode);
}
STDMETHODIMP_(ULONG) AVIClipAddRef(LPDATAOBJECT lpd)
{
LPAVICLIP lpc = (LPAVICLIP) lpd;
DPF2("Clip %p: Usage++=%lx\n", lpd, lpc->ulRefCount + 1);
return ++lpc->ulRefCount;
}
STDMETHODIMP_(ULONG) AVIClipRelease(LPDATAOBJECT lpd)
{
LPAVICLIP lpc = (LPAVICLIP) lpd;
DPF2("Clip %p: Usage--=%lx\n", lpd, lpc->ulRefCount - 1);
if (--lpc->ulRefCount)
return lpc->ulRefCount;
if (lpc->pf)
AVIFileClose(lpc->pf);
if (lpc->pgf)
AVIStreamGetFrameClose(lpc->pgf);
if (lpc->hwndMci)
DestroyWindow(lpc->hwndMci);
#if OWNER_DISPLAY
if (lpc == lpcClipboard)
lpcClipboard = NULL;
#endif
GlobalFreePtr(lpc);
TermOle();
return 0;
}
// *** IDataObject METHODIMPs ***
STDMETHODIMP AVIClipGetData(LPDATAOBJECT lpd, LPFORMATETC pformatetcIn,
LPSTGMEDIUM pmedium )
{
LPAVICLIP lpc = (LPAVICLIP) lpd;
SCODE sc = S_OK;
LPVOID lp;
LPBITMAPINFOHEADER lpbi;
DWORD cb;
PGETFRAME pgf = NULL;
PAVISTREAM ps = NULL;
pmedium->pUnkForRelease = NULL;
if (pformatetcIn->cfFormat == CF_DIB ||
pformatetcIn->cfFormat == CF_PALETTE) {
AVIFileGetStream(lpc->pf, &ps, streamtypeVIDEO, 0L);
if (!ps) {
sc = E_FAIL;
goto error;
}
pgf = AVIStreamGetFrameOpen(ps, NULL);
if (!pgf) {
DPF("AVIClipGetData: AVIStreamGetFrameOpen failed!\n");
sc = E_FAIL;
goto error;
}
lpbi = AVIStreamGetFrame(pgf, 0);
if (! lpbi) {
DPF("AVIClipGetData: AVIStreamGetFrame failed!\n");
sc = E_OUTOFMEMORY;
goto error;
}
if (pformatetcIn->cfFormat == CF_DIB) {
DPF("Building CF_DIB data\n");
// Verify caller asked for correct medium
if (!(pformatetcIn->tymed & TYMED_HGLOBAL)) {
sc = DATA_E_FORMATETC;
goto error;
}
cb = lpbi->biSize +
lpbi->biClrUsed * sizeof(RGBQUAD) +
lpbi->biSizeImage;
pmedium->hGlobal = GlobalAlloc(GHND | GMEM_SHARE, cb);
if (!pmedium->hGlobal) {
sc = E_OUTOFMEMORY;
goto error;
}
lp = GlobalLock(pmedium->hGlobal);
hmemcpy(lp, lpbi, cb);
GlobalUnlock(pmedium->hGlobal);
pmedium->tymed = TYMED_HGLOBAL;
} else /* if (pformatetcIn->cfFormat == CF_PALETTE) */ {
HPALETTE hpal;
// Verify caller asked for correct medium
if (!(pformatetcIn->tymed & TYMED_GDI)) {
sc = DATA_E_FORMATETC;
goto error;
}
hpal = DibCreatePalette(lpbi);
pmedium->hGlobal = hpal;
pmedium->tymed = TYMED_GDI;
DPF("Building CF_PALETTE data: hpal = %p\n", (UINT_PTR) hpal);
}
} else if (pformatetcIn->cfFormat == CF_WAVE) {
LONG cbFormat;
AVISTREAMINFOW strhdr;
#define formtypeWAVE mmioFOURCC('W', 'A', 'V', 'E')
#define ckidWAVEFORMAT mmioFOURCC('f', 'm', 't', ' ')
#define ckidWAVEDATA mmioFOURCC('d', 'a', 't', 'a')
DPF("Building CF_WAVE data\n");
AVIFileGetStream(lpc->pf, &ps, streamtypeAUDIO, 0L);
if (!ps) {
sc = E_FAIL;
goto error;
}
AVIStreamInfoW(ps, &strhdr, sizeof(strhdr));
AVIStreamReadFormat(ps, strhdr.dwStart, NULL, &cbFormat);
cb = strhdr.dwLength * strhdr.dwSampleSize +
cbFormat + 5 * sizeof(DWORD) + 2 * sizeof(DWORD);
pmedium->hGlobal = GlobalAlloc(GHND | GMEM_SHARE, cb);
if (!pmedium->hGlobal) {
sc = E_OUTOFMEMORY;
goto error;
}
lp = GlobalLock(pmedium->hGlobal);
*((DWORD _huge *)lp)++ = FOURCC_RIFF;
*((DWORD _huge *)lp)++ = cb - 2 * sizeof(DWORD);
*((DWORD _huge *)lp)++ = formtypeWAVE;
*((DWORD _huge *)lp)++ = ckidWAVEFORMAT;
*((DWORD _huge *)lp)++ = cbFormat;
AVIStreamReadFormat(ps, strhdr.dwStart, lp, &cbFormat);
lp = (BYTE _huge *) lp + cbFormat;
cb = strhdr.dwLength * strhdr.dwSampleSize;
*((DWORD UNALIGNED _huge *)lp)++ = ckidWAVEDATA;
*((DWORD UNALIGNED _huge *)lp)++ = cb;
AVIStreamRead(ps, strhdr.dwStart, strhdr.dwLength, lp, cb, NULL, NULL);
GlobalUnlock(pmedium->hGlobal);
pmedium->tymed = TYMED_HGLOBAL;
} else {
sc = DATA_E_FORMATETC;
//goto error;
}
error:
if (pgf)
AVIStreamGetFrameClose(pgf);
if (ps)
AVIStreamClose(ps);
DPF2("GetData returns %lx\n", (DWORD) sc);
return ResultFromScode(sc);
}
STDMETHODIMP AVIClipGetDataHere(LPDATAOBJECT lpd, LPFORMATETC pformatetc,
LPSTGMEDIUM pmedium )
{
LPAVICLIP lpc = (LPAVICLIP) lpd;
return ResultFromScode(DATA_E_FORMATETC);
}
STDMETHODIMP AVIClipQueryGetData(LPDATAOBJECT lpd, LPFORMATETC pformatetc )
{
LPAVICLIP lpc = (LPAVICLIP) lpd;
PAVISTREAM ps = NULL;
// set defaults for passing to AVIFileGetStream
UINT type = TYMED_HGLOBAL; // except for CF_PALETTE
FOURCC streamtype = streamtypeVIDEO; // except for CF_WAVE
switch (pformatetc->cfFormat) {
case CF_PALETTE:
type = TYMED_GDI;
break;
case CF_DIB:
// everything is set up
break;
case CF_WAVE:
streamtype = streamtypeAUDIO;
break;
default:
return ResultFromScode(DATA_E_FORMATETC);
}
AVIFileGetStream(lpc->pf, &ps, streamtype, 0L);
if (ps) {
ps->lpVtbl->Release(ps);
if (pformatetc->tymed & type) {
return NOERROR;
}
}
return ResultFromScode(DATA_E_FORMATETC);
}
STDMETHODIMP AVIClipGetCanonicalFormatEtc(LPDATAOBJECT lpd, LPFORMATETC pformatetc,
LPFORMATETC pformatetcOut)
{
LPAVICLIP lpc = (LPAVICLIP) lpd;
return ResultFromScode(E_NOTIMPL);
}
STDMETHODIMP AVIClipSetData(LPDATAOBJECT lpd, LPFORMATETC pformatetc, STGMEDIUM FAR * pmedium,
BOOL fRelease)
{
LPAVICLIP lpc = (LPAVICLIP) lpd;
return ResultFromScode(E_FAIL);
}
STDMETHODIMP AVIClipEnumFormatEtc(LPDATAOBJECT lpd, DWORD dwDirection,
LPENUMFORMATETC FAR* ppenumFormatEtc)
{
LPAVICLIP lpc = (LPAVICLIP) lpd;
SCODE sc = S_OK;
if (dwDirection == DATADIR_GET) {
// Build an enumerator....
*ppenumFormatEtc = OleStdEnumFmtEtc_Create(
lpc->wFormats, lpc->lpFormats);
if (*ppenumFormatEtc == NULL)
sc = E_OUTOFMEMORY;
} else if (dwDirection == DATADIR_SET) {
/* OLE2NOTE: a document that is used to transfer data
** (either via the clipboard or drag/drop does NOT
** accept SetData on ANY format!
*/
sc = E_NOTIMPL;
goto error;
} else {
sc = E_INVALIDARG;
goto error;
}
error:
return ResultFromScode(sc);
}
STDMETHODIMP AVIClipDAdvise(LPDATAOBJECT lpd, FORMATETC FAR* pFormatetc, DWORD advf,
LPADVISESINK pAdvSink, DWORD FAR* pdwConnection)
{
LPAVICLIP lpc = (LPAVICLIP) lpd;
return ResultFromScode(OLE_E_ADVISENOTSUPPORTED);
}
STDMETHODIMP AVIClipDUnadvise(LPDATAOBJECT lpd, DWORD dwConnection)
{
LPAVICLIP lpc = (LPAVICLIP) lpd;
return ResultFromScode(OLE_E_ADVISENOTSUPPORTED);
}
STDMETHODIMP AVIClipEnumDAdvise(LPDATAOBJECT lpd, LPENUMSTATDATA FAR* ppenumAdvise)
{
LPAVICLIP lpc = (LPAVICLIP) lpd;
return ResultFromScode(OLE_E_ADVISENOTSUPPORTED);
}
#if OWNER_DISPLAY
/**************************************************************************
* @doc INTERNAL AVIFILE
*
* @api ClipboardWindowProc
*
*************************************************************************/
static LRESULT CALLBACK _loadds ClipboardWindowProc(HWND hwnd, UINT msg, WPARAM wParam, LONG lParam)
{
WNDPROC x;
HWND hwndViewer;
PAINTSTRUCT ps;
RECT rc;
LPAVICLIP lpc;
switch (msg) {
case WM_DESTROY:
case WM_DESTROYCLIPBOARD:
DPF("WM_DESTROYCLIPBOARD\n");
x = OldClipboardWindowProc;
SetWindowLong(hwnd, GWL_WNDPROC, (LONG)x);
OldClipboardWindowProc = NULL;
return (*x)(hwnd, msg, wParam, lParam);
case WM_RENDERFORMAT:
DPF("WM_RENDERFORMAT cf=%d\n", (int)wParam);
break;
case WM_PAINTCLIPBOARD:
DPF("WM_PAINTCLIPBOARD\n");
hwndViewer = (HWND)wParam;
if (!lParam)
break;
lpc = lpcClipboard;
if (lpc == NULL)
break;
ps = *(LPPAINTSTRUCT)GlobalLock((HGLOBAL)lParam);
FillRect(ps.hdc, &ps.rcPaint, GetStockObject(DKGRAY_BRUSH));
GlobalUnlock((HGLOBAL) lParam);
return 0;
break;
case WM_SIZECLIPBOARD:
DPF("WM_SIZECLIPBOARD\n");
hwndViewer = (HWND)wParam;
lpc = lpcClipboard;
if (lpc == NULL)
break;
if (lParam)
rc = *(LPRECT)GlobalLock((HGLOBAL)lParam);
else
SetRectEmpty(&rc);
if (IsRectEmpty(&rc)) {
}
else {
}
break;
case WM_VSCROLLCLIPBOARD:
case WM_HSCROLLCLIPBOARD:
DPF("WM_VHSCROLLCLIPBOARD\n");
hwndViewer = (HWND)wParam;
break;
case WM_ASKCBFORMATNAME:
DPF("WM_ASKCBFORMATNAME\n");
break;
}
return OldClipboardWindowProc(hwnd, msg, wParam, lParam);
}
#endif
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