610 lines
16 KiB
C
610 lines
16 KiB
C
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/****************************************************************************
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*
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* MODULE : RIFFDISP.C
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*
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****************************************************************************/
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#include <win32.h>
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#include <mmsystem.h>
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#include <commdlg.h>
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#include <vfw.h>
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#include "riffdisp.h"
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static HWND hwndPreview;
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static HANDLE hdibPreview;
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static char achPreview[MAX_PATH];
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static HFONT hfontPreview;
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static HDRAWDIB hdd;
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#define GetHInstance() (HINSTANCE)(SELECTOROF((LPVOID)&hwndPreview))
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#define DibSizeImage(lpbi) (\
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(DWORD)(UINT)((((int)lpbi->biBitCount*(int)lpbi->biWidth+31)&~31)>>3) * \
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(DWORD)(UINT)lpbi->biHeight)
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#define DibSize(lpbi) \
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(lpbi->biSize + ((int)lpbi->biClrUsed * sizeof(RGBQUAD)) + lpbi->biSizeImage)
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#define DibNumColors(lpbi) \
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(lpbi->biBitCount <= 8 ? (1 << (int)lpbi->biBitCount) : 0)
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/***************************************************************************
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*
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****************************************************************************/
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//#define FOURCC_RIFF mmioFOURCC('R','I','F','F')
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#define FOURCC_AVI mmioFOURCC('A','V','I',' ')
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#define FOURCC_INFO mmioFOURCC('I','N','F','O')
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#define FOURCC_DISP mmioFOURCC('D','I','S','P')
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#define FOURCC_INAM mmioFOURCC('I','N','A','M')
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#define FOURCC_ISBJ mmioFOURCC('I','S','B','J')
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BOOL PreviewOpen(HWND hwnd);
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BOOL PreviewFile(HWND hwnd, LPSTR szFile);
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BOOL PreviewPaint(HWND hwnd);
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BOOL PreviewClose(HWND hwnd);
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HANDLE ReadDisp(LPSTR lpszFile, int cf, LPSTR pv, int iLen);
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HANDLE ReadInfo(LPSTR lpszFile, FOURCC fcc, LPSTR pv, int iLen);
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HANDLE GetRiffDisp(LPSTR lpszFile, LPSTR szText, int iLen);
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/***************************************************************************
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*
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****************************************************************************/
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BOOL PreviewOpen(HWND hwnd)
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{
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LOGFONT lf;
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if (hwndPreview)
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return FALSE;
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hwndPreview = hwnd;
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hdd = DrawDibOpen();
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SystemParametersInfo(SPI_GETICONTITLELOGFONT, sizeof(lf), (LPVOID)&lf, 0);
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hfontPreview = CreateFontIndirect(&lf);
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}
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/***************************************************************************
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*
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****************************************************************************/
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BOOL PreviewClose(HWND hwnd)
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{
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if (hwndPreview != hwnd)
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return FALSE;
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if (hdibPreview)
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GlobalFree(hdibPreview);
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if (hfontPreview)
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DeleteObject(hfontPreview);
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if (hdd)
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DrawDibClose(hdd);
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achPreview[0] = 0;
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hdd = NULL;
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hwndPreview = NULL;
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hdibPreview = NULL;
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hfontPreview = NULL;
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}
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/***************************************************************************
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*
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****************************************************************************/
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BOOL PreviewFile(HWND hwnd, LPSTR szFile)
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{
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if (hwndPreview != hwnd)
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return FALSE;
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achPreview[0] = 0;
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if (hdibPreview)
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GlobalFree(hdibPreview);
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hdibPreview = NULL;
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if (szFile)
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{
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hdibPreview = GetRiffDisp(szFile, achPreview, NUMELMS(achPreview));
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}
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PreviewPaint(hwnd);
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return TRUE;
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}
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/***************************************************************************
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*
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****************************************************************************/
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BOOL PreviewPaint(HWND hwnd)
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{
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RECT rc;
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RECT rcPreview;
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RECT rcImage;
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RECT rcText;
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HDC hdc;
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HBRUSH hbr;
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int dx;
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int dy;
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LPBITMAPINFOHEADER lpbi;
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if (hwndPreview != hwnd)
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return FALSE;
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//
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// locate the preview in the lower corner of the dialog (below the
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// cancel button)
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//
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//////!!! find a better way to do this.
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GetClientRect(hwnd, &rcPreview);
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GetWindowRect(GetDlgItem(hwnd, IDCANCEL), &rc);
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ScreenToClient(hwnd, (LPPOINT)&rc);
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ScreenToClient(hwnd, (LPPOINT)&rc+1);
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rcPreview.top = rc.bottom + (rc.bottom - rc.top) + 12;
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rcPreview.left = rc.left;
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rcPreview.right = rc.right;
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rcPreview.bottom -= 4; // leave a little room at the bottom
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//////
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hdc = GetDC(hwnd);
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hbr = (HBRUSH)DefWindowProc(hwnd, WM_CTLCOLOR, (WPARAM)hdc, MAKELONG(hwnd, CTLCOLOR_DLG));
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SelectObject(hdc, hfontPreview);
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SetStretchBltMode(hdc, COLORONCOLOR);
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InflateRect(&rcPreview, 4, 1);
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FillRect(hdc, &rcPreview, hbr);
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IntersectClipRect(hdc, rcPreview.left, rcPreview.top, rcPreview.right, rcPreview.bottom);
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InflateRect(&rcPreview, -4, -1);
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//
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// compute the text rect, using DrawText
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//
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rcText = rcPreview;
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rcText.bottom = rcText.top;
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DrawText(hdc, achPreview, -1, &rcText, DT_CALCRECT|DT_LEFT|DT_WORDBREAK);
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//
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// compute the image size
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//
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if (hdibPreview && hdd)
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{
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lpbi = (LPVOID)GlobalLock(hdibPreview);
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#if 0
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//
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// DISP(CF_DIB) chunks are messed up they contain a DIB file! not
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// a CF_DIB, skip over the header if it is there.
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//
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if (lpbi->biSize != sizeof(BITMAPINFOHEADER))
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(LPSTR)lpbi += sizeof(BITMAPFILEHEADER);
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#endif
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rcImage = rcPreview;
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//
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// if wider than preview area scale to fit
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//
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if ((int)lpbi->biWidth > rcImage.right - rcImage.left)
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{
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rcImage.bottom = rcImage.top + MulDiv((int)lpbi->biHeight,rcImage.right-rcImage.left,(int)lpbi->biWidth);
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}
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//
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// if x2 will fit then use it
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//
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else if ((int)lpbi->biWidth * 2 < rcImage.right - rcImage.left)
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{
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rcImage.right = rcImage.left + (int)lpbi->biWidth*2;
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rcImage.bottom = rcImage.top + (int)lpbi->biHeight*2;
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}
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//
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// else center the image in the preview area
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//
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else
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{
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rcImage.right = rcImage.left + (int)lpbi->biWidth;
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rcImage.bottom = rcImage.top + (int)lpbi->biHeight;
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}
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if (rcImage.bottom > rcPreview.bottom - (rcText.bottom - rcText.top))
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{
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rcImage.bottom = rcPreview.bottom - (rcText.bottom - rcText.top);
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rcImage.right = rcPreview.left + MulDiv((int)lpbi->biWidth,rcImage.bottom-rcImage.top,(int)lpbi->biHeight);
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rcImage.left = rcPreview.left;
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}
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}
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else
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{
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SetRectEmpty(&rcImage);
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}
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//
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// now center
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//
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dx = ((rcPreview.right - rcPreview.left) - (rcText.right - rcText.left))/2;
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OffsetRect(&rcText, dx, 0);
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dx = ((rcPreview.right - rcPreview.left) - (rcImage.right - rcImage.left))/2;
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OffsetRect(&rcImage, dx, 0);
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dy = rcPreview.bottom - rcPreview.top;
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dy -= rcImage.bottom - rcImage.top;
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dy -= rcText.bottom - rcText.top;
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if (dy < 0)
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dy = 0;
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else
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dy = dy / 2;
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OffsetRect(&rcImage, 0, dy);
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OffsetRect(&rcText, 0, dy + rcImage.bottom - rcImage.top + 2);
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//
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// now draw
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//
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DrawText(hdc, achPreview, -1, &rcText, DT_LEFT|DT_WORDBREAK);
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if (hdibPreview && hdd)
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{
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DrawDibDraw(hdd,
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hdc,
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rcImage.left,
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rcImage.top,
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rcImage.right - rcImage.left,
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rcImage.bottom - rcImage.top,
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lpbi,
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NULL,
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0,
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0,
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-1,
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-1,
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0);
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InflateRect(&rcImage, 1, 1);
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FrameRect(hdc, &rcImage, GetStockObject(BLACK_BRUSH));
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}
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ReleaseDC(hwnd, hdc);
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return TRUE;
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}
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/***************************************************************************
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*
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****************************************************************************/
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static UINT (CALLBACK *lpfnOldHook)(HWND, UINT, WPARAM, LPARAM);
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/* Combo boxes */
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#define cmb1 0x0470
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#define cmb2 0x0471
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/* Listboxes */
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#define lst1 0x0460
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#define lst2 0x0461
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/* Edit controls */
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#define edt1 0x0480
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#define ID_TIMER 1234
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#define PREVIEWWAIT 1000
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WORD FAR PASCAL _export GetFileNamePreviewHook(HWND hwnd, unsigned msg, WORD wParam, LONG lParam)
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{
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int i;
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char ach[80];
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switch (msg) {
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case WM_COMMAND:
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switch (wParam)
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{
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case lst1:
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if (HIWORD(lParam) == LBN_SELCHANGE)
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{
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KillTimer(hwnd, ID_TIMER);
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SetTimer(hwnd, ID_TIMER, PREVIEWWAIT, NULL);
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}
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break;
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case IDOK:
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case IDCANCEL:
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KillTimer(hwnd, ID_TIMER);
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PreviewFile(hwnd, NULL);
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break;
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case cmb1:
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case cmb2:
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case lst2:
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if (HIWORD(lParam) == LBN_SELCHANGE)
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{
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KillTimer(hwnd, ID_TIMER);
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PreviewFile(hwnd, NULL);
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}
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break;
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}
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break;
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case WM_TIMER:
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if (wParam == ID_TIMER)
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{
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KillTimer(hwnd, ID_TIMER);
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ach[0] = 0;
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i = (int)SendDlgItemMessage(hwnd, lst1, LB_GETCURSEL, 0, 0L);
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SendDlgItemMessage(hwnd, lst1, LB_GETTEXT, i, (LONG)(LPSTR)ach);
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PreviewFile(hwnd, ach);
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return TRUE;
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}
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break;
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case WM_QUERYNEWPALETTE:
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case WM_PALETTECHANGED:
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case WM_PAINT:
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PreviewPaint(hwnd);
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break;
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case WM_INITDIALOG:
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PreviewOpen(hwnd);
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if (!lpfnOldHook)
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return TRUE;
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break;
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case WM_DESTROY:
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PreviewClose(hwnd);
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break;
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}
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if (lpfnOldHook)
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return (*lpfnOldHook)(hwnd, msg, wParam, lParam);
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else
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return FALSE;
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}
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/**************************************************************************
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* @doc EXTERNAL GetOpenFileNamePreview
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*
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* @api BOOL | GetOpenFileNamePreview | This function is similar
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* to <f GetOpenFileName> defined in COMMDLG.DLL except that
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* it has a preview window to display the movie about to be opened.
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*
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* @parm LPOPENFILENAME | lpofn | Points to an <t OPENFILENAME> structure
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* used to initialize the dialog box. On return, the structure
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* contains information about the user's file selection.
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*
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* @rdesc Returns true if a file was opened.
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*
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* @comm For more information on this function, see the description for
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* <f GetOpenFileName>.
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*
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* @xref <f GetOpenFileName>
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*
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*************************************************************************/
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BOOL FAR PASCAL GetOpenFileNamePreview(LPOPENFILENAME lpofn)
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{
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BOOL fHook;
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BOOL f;
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if (hwndPreview)
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return GetOpenFileName(lpofn);
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fHook = (BOOL)(lpofn->Flags & OFN_ENABLEHOOK);
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if (fHook)
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||
|
|
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;
|
||
|
|
}
|