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windows-server-2003/multimedia/media/avi/avifile.16/riffdisp.c

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/****************************************************************************
*
* MODULE : RIFFDISP.C
*
****************************************************************************/
#include <windows.h>
#include <win32.h>
#include <mmsystem.h>
#include <commdlg.h>
#include <drawdib.h>
#include "riffdisp.h"
#include "avifile.h"
static HWND hwndPreview;
static HANDLE hdibPreview;
static char achPreview[80];
static HFONT hfontPreview;
static HDRAWDIB hdd;
#define GetHInstance() (HINSTANCE)(SELECTOROF((LPVOID)&hwndPreview))
#define DibSizeImage(lpbi) (\
(DWORD)(UINT)((((int)lpbi->biBitCount*(int)lpbi->biWidth+31)&~31)>>3) * \
(DWORD)(UINT)lpbi->biHeight)
#define DibSize(lpbi) \
(lpbi->biSize + ((int)lpbi->biClrUsed * sizeof(RGBQUAD)) + lpbi->biSizeImage)
#define DibNumColors(lpbi) \
(lpbi->biBitCount <= 8 ? (1 << (int)lpbi->biBitCount) : 0)
/***************************************************************************
*
****************************************************************************/
//#define FOURCC_RIFF mmioFOURCC('R','I','F','F')
#define FOURCC_AVI mmioFOURCC('A','V','I',' ')
#define FOURCC_INFO mmioFOURCC('I','N','F','O')
#define FOURCC_DISP mmioFOURCC('D','I','S','P')
#define FOURCC_INAM mmioFOURCC('I','N','A','M')
#define FOURCC_ISBJ mmioFOURCC('I','S','B','J')
BOOL PreviewOpen(HWND hwnd);
BOOL PreviewFile(HWND hwnd, LPSTR szFile);
BOOL PreviewPaint(HWND hwnd);
BOOL PreviewClose(HWND hwnd);
HANDLE ReadDisp(LPSTR lpszFile, int cf, LPSTR pv, int iLen);
HANDLE ReadInfo(LPSTR lpszFile, FOURCC fcc, LPSTR pv, int iLen);
HANDLE GetRiffDisp(LPSTR lpszFile, LPSTR szText, int iLen);
/***************************************************************************
*
****************************************************************************/
BOOL PreviewOpen(HWND hwnd)
{
LOGFONT lf;
if (hwndPreview)
return FALSE;
hwndPreview = hwnd;
hdd = DrawDibOpen();
SystemParametersInfo(SPI_GETICONTITLELOGFONT, sizeof(lf), (LPVOID)&lf, 0);
hfontPreview = CreateFontIndirect(&lf);
}
/***************************************************************************
*
****************************************************************************/
BOOL PreviewClose(HWND hwnd)
{
if (hwndPreview != hwnd)
return FALSE;
if (hdibPreview)
GlobalFree(hdibPreview);
if (hfontPreview)
DeleteObject(hfontPreview);
if (hdd)
DrawDibClose(hdd);
achPreview[0] = 0;
hdd = NULL;
hwndPreview = NULL;
hdibPreview = NULL;
hfontPreview = NULL;
}
/***************************************************************************
*
****************************************************************************/
BOOL PreviewFile(HWND hwnd, LPSTR szFile)
{
if (hwndPreview != hwnd)
return FALSE;
achPreview[0] = 0;
if (hdibPreview)
GlobalFree(hdibPreview);
hdibPreview = NULL;
if (szFile)
{
hdibPreview = GetRiffDisp(szFile, achPreview, sizeof(achPreview));
}
PreviewPaint(hwnd);
return TRUE;
}
/***************************************************************************
*
****************************************************************************/
BOOL PreviewPaint(HWND hwnd)
{
RECT rc;
RECT rcPreview;
RECT rcImage;
RECT rcText;
HDC hdc;
HBRUSH hbr;
int dx;
int dy;
LPBITMAPINFOHEADER lpbi;
if (hwndPreview != hwnd)
return FALSE;
//
// locate the preview in the lower corner of the dialog (below the
// cancel button)
//
//////!!! find a better way to do this.
GetClientRect(hwnd, &rcPreview);
GetWindowRect(GetDlgItem(hwnd, IDCANCEL), &rc);
ScreenToClient(hwnd, (LPPOINT)&rc);
ScreenToClient(hwnd, (LPPOINT)&rc+1);
rcPreview.top = rc.bottom + (rc.bottom - rc.top) + 12;
rcPreview.left = rc.left;
rcPreview.right = rc.right;
rcPreview.bottom -= 4; // leave a little room at the bottom
//////
hdc = GetDC(hwnd);
hbr = (HBRUSH)DefWindowProc(hwnd, WM_CTLCOLOR, (WPARAM)hdc, MAKELONG(hwnd, CTLCOLOR_DLG));
SelectObject(hdc, hfontPreview);
SetStretchBltMode(hdc, COLORONCOLOR);
InflateRect(&rcPreview, 4, 1);
FillRect(hdc, &rcPreview, hbr);
IntersectClipRect(hdc, rcPreview.left, rcPreview.top, rcPreview.right, rcPreview.bottom);
InflateRect(&rcPreview, -4, -1);
//
// compute the text rect, using DrawText
//
rcText = rcPreview;
rcText.bottom = rcText.top;
DrawText(hdc, achPreview, -1, &rcText, DT_CALCRECT|DT_LEFT|DT_WORDBREAK);
//
// compute the image size
//
if (hdibPreview && hdd)
{
lpbi = (LPVOID)GlobalLock(hdibPreview);
#if 0
//
// DISP(CF_DIB) chunks are messed up they contain a DIB file! not
// a CF_DIB, skip over the header if it is there.
//
if (lpbi->biSize != sizeof(BITMAPINFOHEADER))
(LPSTR)lpbi += sizeof(BITMAPFILEHEADER);
#endif
rcImage = rcPreview;
//
// if wider than preview area scale to fit
//
if ((int)lpbi->biWidth > rcImage.right - rcImage.left)
{
rcImage.bottom = rcImage.top + MulDiv((int)lpbi->biHeight,rcImage.right-rcImage.left,(int)lpbi->biWidth);
}
//
// if x2 will fit then use it
//
else if ((int)lpbi->biWidth * 2 < rcImage.right - rcImage.left)
{
rcImage.right = rcImage.left + (int)lpbi->biWidth*2;
rcImage.bottom = rcImage.top + (int)lpbi->biHeight*2;
}
//
// else center the image in the preview area
//
else
{
rcImage.right = rcImage.left + (int)lpbi->biWidth;
rcImage.bottom = rcImage.top + (int)lpbi->biHeight;
}
if (rcImage.bottom > rcPreview.bottom - (rcText.bottom - rcText.top))
{
rcImage.bottom = rcPreview.bottom - (rcText.bottom - rcText.top);
rcImage.right = rcPreview.left + MulDiv((int)lpbi->biWidth,rcImage.bottom-rcImage.top,(int)lpbi->biHeight);
rcImage.left = rcPreview.left;
}
}
else
{
SetRectEmpty(&rcImage);
}
//
// now center
//
dx = ((rcPreview.right - rcPreview.left) - (rcText.right - rcText.left))/2;
OffsetRect(&rcText, dx, 0);
dx = ((rcPreview.right - rcPreview.left) - (rcImage.right - rcImage.left))/2;
OffsetRect(&rcImage, dx, 0);
dy = rcPreview.bottom - rcPreview.top;
dy -= rcImage.bottom - rcImage.top;
dy -= rcText.bottom - rcText.top;
if (dy < 0)
dy = 0;
else
dy = dy / 2;
OffsetRect(&rcImage, 0, dy);
OffsetRect(&rcText, 0, dy + rcImage.bottom - rcImage.top + 2);
//
// now draw
//
DrawText(hdc, achPreview, -1, &rcText, DT_LEFT|DT_WORDBREAK);
if (hdibPreview && hdd)
{
DrawDibDraw(hdd,
hdc,
rcImage.left,
rcImage.top,
rcImage.right - rcImage.left,
rcImage.bottom - rcImage.top,
lpbi,
NULL,
0,
0,
-1,
-1,
0);
InflateRect(&rcImage, 1, 1);
FrameRect(hdc, &rcImage, GetStockObject(BLACK_BRUSH));
}
ReleaseDC(hwnd, hdc);
return TRUE;
}
/***************************************************************************
*
****************************************************************************/
static UINT (CALLBACK *lpfnOldHook)(HWND, UINT, WPARAM, LPARAM);
/* Combo boxes */
#define cmb1 0x0470
#define cmb2 0x0471
/* Listboxes */
#define lst1 0x0460
#define lst2 0x0461
/* Edit controls */
#define edt1 0x0480
#define ID_TIMER 1234
#define PREVIEWWAIT 1000
WORD FAR PASCAL _export GetFileNamePreviewHook(HWND hwnd, unsigned msg, WORD wParam, LONG lParam)
{
int i;
char ach[80];
switch (msg) {
case WM_COMMAND:
switch (wParam)
{
case lst1:
if (HIWORD(lParam) == LBN_SELCHANGE)
{
KillTimer(hwnd, ID_TIMER);
SetTimer(hwnd, ID_TIMER, PREVIEWWAIT, NULL);
}
break;
case IDOK:
case IDCANCEL:
KillTimer(hwnd, ID_TIMER);
PreviewFile(hwnd, NULL);
break;
case cmb1:
case cmb2:
case lst2:
if (HIWORD(lParam) == LBN_SELCHANGE)
{
KillTimer(hwnd, ID_TIMER);
PreviewFile(hwnd, NULL);
}
break;
}
break;
case WM_TIMER:
if (wParam == ID_TIMER)
{
KillTimer(hwnd, ID_TIMER);
ach[0] = 0;
i = (int)SendDlgItemMessage(hwnd, lst1, LB_GETCURSEL, 0, 0L);
SendDlgItemMessage(hwnd, lst1, LB_GETTEXT, i, (LONG)(LPSTR)ach);
PreviewFile(hwnd, ach);
return TRUE;
}
break;
case WM_QUERYNEWPALETTE:
case WM_PALETTECHANGED:
case WM_PAINT:
PreviewPaint(hwnd);
break;
case WM_INITDIALOG:
PreviewOpen(hwnd);
if (!lpfnOldHook)
return TRUE;
break;
case WM_DESTROY:
PreviewClose(hwnd);
break;
}
if (lpfnOldHook)
return (*lpfnOldHook)(hwnd, msg, wParam, lParam);
else
return FALSE;
}
/**************************************************************************
* @doc EXTERNAL AVIGetStream
*
* @api BOOL | GetOpenFileNamePreview | This function is similar
* to <f GetOpenFileName> defined in COMMDLG.DLL except that
* it has a preview window to display the movie about to be opened.
*
* @parm LPOPENFILENAME | lpofn | Points to an <t OPENFILENAME> structure
* used to initialize the dialog box. On return, the structure
* contains information about the user's file selection.
*
* @rdesc Returns true if a file was opened.
*
* @comm For more information on this function, see the description for
* <f GetOpenFileName>.
*
* @xref <f GetOpenFileName>
*
*************************************************************************/
BOOL FAR PASCAL GetOpenFileNamePreview(LPOPENFILENAME lpofn)
{
BOOL fHook;
BOOL f;
if (hwndPreview)
return GetOpenFileName(lpofn);
fHook = (BOOL)(lpofn->Flags & OFN_ENABLEHOOK);
if (fHook)
lpfnOldHook = lpofn->lpfnHook;
(FARPROC)lpofn->lpfnHook = MakeProcInstance((FARPROC)GetFileNamePreviewHook, GetHInstance());
lpofn->Flags |= OFN_ENABLEHOOK;
f = GetOpenFileName(lpofn);
FreeProcInstance((FARPROC)lpofn->lpfnHook);
if (fHook)
lpofn->lpfnHook = lpfnOldHook;
else
lpofn->Flags &= ~OFN_ENABLEHOOK;
return f;
}
HANDLE AVIFirstFrame(LPSTR szFile)
{
HANDLE h = NULL;
LPBITMAPINFOHEADER lpbi;
DWORD dwSize;
PAVISTREAM pavi;
PGETFRAME pg;
if (AVIStreamOpenFromFile(&pavi, szFile, streamtypeVIDEO, 0, OF_READ, NULL) == AVIERR_OK)
{
pg = AVIStreamGetFrameOpen(pavi, NULL);
if (pg) {
lpbi = AVIStreamGetFrame(pg, 0);
if (lpbi)
{
dwSize = lpbi->biSize + lpbi->biSizeImage + lpbi->biClrUsed * sizeof(RGBQUAD);
h = GlobalAlloc(GHND, dwSize);
if (h)
hmemcpy(GlobalLock(h), lpbi, dwSize);
}
AVIStreamGetFrameClose(pg);
}
AVIStreamClose(pavi);
}
return h;
}
/****************************************************************************
*
* get both the DISP(CF_DIB) and the DISP(CF_TEXT) info in one pass, this is
* much faster than doing multiple passes over the file.
*
****************************************************************************/
HANDLE GetRiffDisp(LPSTR lpszFile, LPSTR szText, int iLen)
{
HMMIO hmmio;
MMCKINFO ck;
MMCKINFO ckINFO;
MMCKINFO ckRIFF;
HANDLE h = NULL;
LONG lSize;
DWORD dw;
HCURSOR hcur = NULL;
if (szText)
szText[0] = 0;
/* Open the file */
hmmio = mmioOpen(lpszFile, NULL, MMIO_ALLOCBUF | MMIO_READ);
if (hmmio == NULL)
return NULL;
mmioSeek(hmmio, 0, SEEK_SET);
/* descend the input file into the RIFF chunk */
if (mmioDescend(hmmio, &ckRIFF, NULL, 0) != 0)
goto error;
if (ckRIFF.ckid != FOURCC_RIFF)
goto error;
while (!mmioDescend(hmmio, &ck, &ckRIFF, 0))
{
if (ck.ckid == FOURCC_DISP)
{
if (hcur == NULL)
hcur = SetCursor(LoadCursor(NULL, IDC_WAIT));
/* Read dword into dw, break if read unsuccessful */
if (mmioRead(hmmio, (LPVOID)&dw, sizeof(dw)) != sizeof(dw))
goto error;
/* Find out how much memory to allocate */
lSize = ck.cksize - sizeof(dw);
if ((int)dw == CF_DIB && h == NULL)
{
/* get a handle to memory to hold the description and lock it down */
if ((h = GlobalAlloc(GHND, lSize+4)) == NULL)
goto error;
if (mmioRead(hmmio, GlobalLock(h), lSize) != lSize)
goto error;
}
else if ((int)dw == CF_TEXT && szText[0] == 0)
{
if (lSize > iLen-1)
lSize = iLen-1;
szText[lSize] = 0;
if (mmioRead(hmmio, szText, lSize) != lSize)
goto error;
}
}
else if (ck.ckid == FOURCC_LIST &&
ck.fccType == FOURCC_INFO &&
szText[0] == 0)
{
while (!mmioDescend(hmmio, &ckINFO, &ck, 0))
{
switch (ckINFO.ckid)
{
case FOURCC_INAM:
// case FOURCC_ISBJ:
lSize = ck.cksize;
if (lSize > iLen-1)
lSize = iLen-1;
szText[lSize] = 0;
if (mmioRead(hmmio, szText, lSize) != lSize)
goto error;
break;
}
if (mmioAscend(hmmio, &ckINFO, 0))
break;
}
}
//
// if we have both a picture and a title, then exit.
//
if (h != NULL && szText[0] != 0)
break;
/* Ascend so that we can descend into next chunk
*/
if (mmioAscend(hmmio, &ck, 0))
break;
}
goto exit;
error:
if (h)
GlobalFree(h);
h = NULL;
ckRIFF.fccType = 0;
exit:
mmioClose(hmmio, 0);
//
// !!!we need a way to preview other file types!
// !!!what about text.
//
if (h == NULL && ckRIFF.fccType == FOURCC_AVI)
{
if (hcur == NULL)
hcur = SetCursor(LoadCursor(NULL, IDC_WAIT));
h = AVIFirstFrame(lpszFile);
}
//
// verify and correct the DIB
//
if (h)
{
LPBITMAPINFOHEADER lpbi;
lpbi = (LPVOID)GlobalLock(h);
if (lpbi->biSize < sizeof(BITMAPINFOHEADER))
goto error;
if (lpbi->biClrUsed == 0)
lpbi->biClrUsed = DibNumColors(lpbi);
if (lpbi->biSizeImage == 0)
lpbi->biSizeImage = DibSizeImage(lpbi);
if (DibSize(lpbi) > GlobalSize(h))
goto error;
}
if (hcur)
SetCursor(hcur);
return h;
}