743 lines
21 KiB
C
743 lines
21 KiB
C
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/****************************************************************************
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*
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* capdib.c
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*
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* DIB processing module.
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*
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* Microsoft Video for Windows Sample Capture Class
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*
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* Copyright (c) 1992, 1993 Microsoft Corporation. All Rights Reserved.
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*
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* You have a royalty-free right to use, modify, reproduce and
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* distribute the Sample Files (and/or any modified version) in
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* any way you find useful, provided that you agree that
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* Microsoft has no warranty obligations or liability for any
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* Sample Application Files which are modified.
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*
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***************************************************************************/
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#define INC_OLE2
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#pragma warning(disable:4103)
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#include <windows.h>
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#include <windowsx.h>
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#include <win32.h>
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#include <mmsystem.h>
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#include <msvideo.h>
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#include <drawdib.h>
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#include "ivideo32.h"
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#include "avicap.h"
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#include "avicapi.h"
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//
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// Initialize a DIB to the default format of 160x120x8, BI_RGB
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//
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void SetDefaultCaptureFormat (LPBITMAPINFOHEADER lpbih)
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{
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lpbih->biSize = sizeof (BITMAPINFOHEADER);
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lpbih->biWidth = 160;
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lpbih->biHeight = 120;
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lpbih->biBitCount = 8;
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lpbih->biPlanes = 1;
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lpbih->biCompression = BI_RGB;
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lpbih->biSizeImage = DIBWIDTHBYTES (*lpbih) * lpbih->biHeight;
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lpbih->biXPelsPerMeter = 0;
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lpbih->biYPelsPerMeter = 0;
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lpbih->biClrUsed = 256;
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lpbih->biClrImportant = 0;
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}
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//
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// Whenever we get a new format from the driver, OR
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// start using a new palette, we must reallocate
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// our global BITMAPINFOHEADER. This allows JPEG
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// quantization tables to be tacked onto the BITMAPINFO
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// or any other format specific stuff. The color table
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// is always offset biSize from the start of the BITMAPINFO.
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// Returns: 0 on success, or DV_ERR_... code
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//
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DWORD AllocNewGlobalBitmapInfo (LPCAPSTREAM lpcs, LPBITMAPINFOHEADER lpbi)
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{
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DWORD dwSize;
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dwSize = lpbi->biSize + 256 * sizeof (RGBQUAD);
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// The 256 entry above is HARDWIRED ON PURPOSE
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// If biClrUsed was used instead, we would have to realloc
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// whenever a palette is pasted (during DibNewPalette())!!!
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if (lpcs->lpBitsInfo)
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lpcs->lpBitsInfo = (LPBITMAPINFO) GlobalReAllocPtr (lpcs->lpBitsInfo,
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dwSize, GHND);
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else
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lpcs->lpBitsInfo = (LPBITMAPINFO) GlobalAllocPtr (GHND, dwSize);
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if (!lpcs->lpBitsInfo)
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return (DV_ERR_NOMEM);
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// Copy over the BITMAPINFOHEADER
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CopyMemory (lpcs->lpBitsInfo, lpbi, lpbi->biSize);
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return DV_ERR_OK;
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}
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//
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// Whenever we get a new format from the driver
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// allocate a new global bitspace. This bitspace is used
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// in preview mode and single frame capture.
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// Returns: 0 on success, or DV_ERR_... code
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//
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DWORD AllocNewBitSpace (LPCAPSTREAM lpcs, LPBITMAPINFOHEADER lpbih)
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{
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DWORD dwSize;
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// Allow room for a RIFF chunk prepended to the actual image,
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// and a junk chunk on the tail end
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#define RESERVE_FOR_RIFF (512+sizeof(RIFF))
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dwSize = lpbih->biSizeImage + RESERVE_FOR_RIFF;
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if (lpcs->lpBitsUnaligned) {
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#ifdef CHICAGO
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vidxFreePreviewBuffer (lpcs->hVideoIn,
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lpcs->lpBitsUnaligned);
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#else
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FreeSectorAlignedMem (lpcs->lpBitsUnaligned);
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#endif
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lpcs->lpBitsUnaligned = NULL;
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lpcs->lpBits = NULL;
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}
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#ifdef CHICAGO
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if (MMSYSERR_NOERROR == vidxAllocPreviewBuffer (
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lpcs->hVideoIn,
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&lpcs->lpBitsUnaligned,
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dwSize)) {
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lpcs->lpBits = (LPBYTE) (ROUNDUPTOSECTORSIZE(lpcs->lpBitsUnaligned, 512)
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+ sizeof(RIFF));
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}
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#else
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if (lpcs->lpBitsUnaligned = ((LPBYTE)AllocSectorAlignedMem (dwSize, 512))) {
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lpcs->lpBits = (LPBYTE) (ROUNDUPTOSECTORSIZE(lpcs->lpBitsUnaligned, 512)
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+ sizeof(RIFF));
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}
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#endif
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if (!lpcs->lpBits)
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return (DV_ERR_NOMEM);
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return DV_ERR_OK;
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}
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//
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// Dib Initialization code
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// Returns: 0 on success, or DV_ERR_... code
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//
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DWORD DibInit (LPCAPSTREAM lpcs)
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{
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BITMAPINFOHEADER bmih;
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SetDefaultCaptureFormat (&bmih);
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return ((WORD) AllocNewGlobalBitmapInfo (lpcs, &bmih));
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}
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//
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// Fini code to free all bitmap resources
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//
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void DibFini (LPCAPSTREAM lpcs)
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{
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if (lpcs->lpBits) {
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#ifdef CHICAGO
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vidxFreePreviewBuffer (lpcs->hVideoIn, lpcs->lpBitsUnaligned);
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#else
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FreeSectorAlignedMem (lpcs->lpBitsUnaligned);
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#endif
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lpcs->lpBits = NULL;
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lpcs->lpBitsUnaligned = NULL;
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}
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if (lpcs->lpBitsInfo) {
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GlobalFreePtr (lpcs->lpBitsInfo);
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lpcs->lpBitsInfo = NULL;
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}
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lpcs->dxBits = 0;
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lpcs->dyBits = 0;
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}
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//
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// Send a format to the driver.
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// Whenever we do a format change, send the driver the
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// Source and destination rects.
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// Returns: 0 on success, or DV_ERR_... code
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//
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DWORD SendDriverFormat (LPCAPSTREAM lpcs, LPBITMAPINFOHEADER lpbih, DWORD dwInfoHeaderSize)
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{
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RECT rc;
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DWORD dwError = DV_ERR_NOTSUPPORTED;
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rc.left = rc.top = 0;
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rc.right = (int) lpbih->biWidth;
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rc.bottom = (int) lpbih->biHeight;
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if (dwError = videoConfigure(lpcs->hVideoIn,
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DVM_FORMAT,
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VIDEO_CONFIGURE_SET, NULL,
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(LPBITMAPINFOHEADER)lpbih, dwInfoHeaderSize,
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NULL, 0 ) ) {
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return dwError;
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} else {
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videoSetRect (lpcs->hVideoCapture, DVM_DST_RECT, rc);
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videoSetRect (lpcs->hVideoIn, DVM_SRC_RECT, rc);
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videoSetRect (lpcs->hVideoIn, DVM_DST_RECT, rc);
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}
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return dwError;
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}
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//
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// Given a DIB, see if the driver likes it, then
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// allocate the global BITMAPINFOHEADER and bitspace.
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//
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//
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DWORD SetFormatFromDIB (LPCAPSTREAM lpcs, LPBITMAPINFOHEADER lpbih)
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{
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DWORD dwError;
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// Fill optional fields in the DIB header
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if (lpbih->biSizeImage == 0)
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lpbih->biSizeImage = DIBWIDTHBYTES (*lpbih) * lpbih->biHeight;
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// Is the format palatized or full-color
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if (lpbih->biBitCount <= 8 && lpbih->biClrUsed == 0)
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lpbih->biClrUsed = (1 << lpbih->biBitCount); // paletized
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// See if the driver will support it
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if (dwError = SendDriverFormat (lpcs, lpbih, lpbih->biSize) )
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return dwError;
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// Realloc our global header
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if (dwError = AllocNewGlobalBitmapInfo (lpcs, lpbih))
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return dwError;
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// Realloc the bits
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if (dwError = AllocNewBitSpace (lpcs, lpbih))
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return dwError;
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lpcs->dxBits = (int)lpbih->biWidth;
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lpcs->dyBits = (int)lpbih->biHeight;
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lpcs->VidHdr.lpData = lpcs->lpBits;
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lpcs->VidHdr.dwBufferLength = lpbih->biSizeImage;
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lpcs->VidHdr.dwUser = 0;
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lpcs->VidHdr.dwFlags = 0;
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return (DV_ERR_OK);
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}
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//
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// Returns: a LPBITMAPINFO allocated from global memory
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// containing the current format, or NULL on error.
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// Note that this structure can be larger than
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// sizeof (BITMAPINFO), ie. JPEG !!!
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//
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LPBITMAPINFO DibGetCurrentFormat (LPCAPSTREAM lpcs)
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{
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DWORD dwError;
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DWORD dwSize = 0;
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LPBITMAPINFO lpBInfo = NULL;
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if (!lpcs->fHardwareConnected)
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return NULL;
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// How large is the BITMAPINFOHEADER?
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videoConfigure( lpcs->hVideoIn,
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DVM_FORMAT,
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VIDEO_CONFIGURE_GET | VIDEO_CONFIGURE_QUERYSIZE,
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&dwSize, 0, 0, NULL, 0);
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if (!dwSize)
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dwSize = sizeof (BITMAPINFOHEADER);
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if (!(lpBInfo = (LPBITMAPINFO) GlobalAllocPtr (GMEM_MOVEABLE, dwSize)))
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return (NULL);
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if (dwError = videoConfigure( lpcs->hVideoIn,
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DVM_FORMAT,
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VIDEO_CONFIGURE_GET | VIDEO_CONFIGURE_CURRENT, NULL,
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(LPBITMAPINFOHEADER) lpBInfo, dwSize,
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NULL, 0 ) ) {
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// very bad. the driver can't tell us its format. we're hosed.
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GlobalFreePtr (lpBInfo);
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return NULL;
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}
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return (lpBInfo);
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}
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//
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// Main entry point when changing capture formats.
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// This is called when the user closes the drivers format dialog.
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// Returns: 0 on success, or DV_ERR_... code
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//
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DWORD DibGetNewFormatFromDriver (LPCAPSTREAM lpcs)
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{
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BOOL f;
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BITMAPINFOHEADER bih;
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DWORD dwError;
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LPBITMAPINFO lpBInfo;
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if (!lpcs->fHardwareConnected)
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return DV_ERR_OK; // Return OK if no hardware exists
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lpBInfo = DibGetCurrentFormat (lpcs);
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if (lpBInfo == NULL)
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return DV_ERR_NOTSUPPORTED;
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// Set our internal state
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if (dwError = SetFormatFromDIB (lpcs, (LPBITMAPINFOHEADER) lpBInfo)) {
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// couldn't change formats, time to punt!
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// Try to switch back to minimal format (120x160x8)
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errorDriverID (lpcs, dwError);
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SetDefaultCaptureFormat (&bih);
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dwError = SetFormatFromDIB (lpcs, &bih);
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}
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// Force a new frame to be taken, so the DIB contains good
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// data. Especially important to prevent codecs from exploding!
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if (!dwError)
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videoFrame (lpcs->hVideoIn, &lpcs->VidHdr);
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if (lpBInfo)
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GlobalFreePtr (lpBInfo);
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f = DrawDibBegin(lpcs->hdd,NULL,-1,-1,(LPBITMAPINFOHEADER)(lpcs->lpBitsInfo),-1,-1,0);
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if (!f) {
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errorUpdateError(lpcs, IDS_CAP_AVI_DRAWDIB_ERROR);
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}
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return (dwError);
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}
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//
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// Main entry point when changing capture formats via App message.
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// Returns: TRUE on success, or FALSE if format not supported
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//
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BOOL DibNewFormatFromApp (LPCAPSTREAM lpcs, LPBITMAPINFO lpbiNew, UINT dwSize)
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{
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BOOL f;
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DWORD dwError;
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LPBITMAPINFO lpBInfo;
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if (!lpcs->fHardwareConnected)
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return FALSE;
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lpBInfo = DibGetCurrentFormat (lpcs); // Allocs memory!!!
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if (lpBInfo == NULL)
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return FALSE;
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// Set our internal state
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||
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if (dwError = SetFormatFromDIB (lpcs, (LPBITMAPINFOHEADER) lpbiNew)) {
|
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// Driver didn't accept the format,
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// switch back to the original
|
||
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errorDriverID (lpcs, dwError);
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SetFormatFromDIB (lpcs, (LPBITMAPINFOHEADER)lpBInfo);
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}
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||
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|
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// Force a new frame to be taken, so the DIB contains good
|
||
|
|
// data. Especially important to prevent codecs from exploding!
|
||
|
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videoFrame (lpcs->hVideoIn, &lpcs->VidHdr);
|
||
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|
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if (lpBInfo)
|
||
|
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GlobalFreePtr (lpBInfo);
|
||
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|
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f = DrawDibBegin(lpcs->hdd,NULL,-1,-1,(LPBITMAPINFOHEADER)(lpcs->lpBitsInfo),-1,-1,0);
|
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|
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if (!f) {
|
||
|
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errorUpdateError(lpcs, IDS_CAP_AVI_DRAWDIB_ERROR);
|
||
|
|
//errorDriverID (lpcs, IDS_CAP_AVI_DRAWDIB_ERROR);
|
||
|
|
}
|
||
|
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|
||
|
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return (dwError == DV_ERR_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void xlatClut8 (BYTE HUGE *pb, DWORD dwSize, BYTE HUGE *xlat)
|
||
|
|
{
|
||
|
|
DWORD dw;
|
||
|
|
|
||
|
|
for (dw = 0; dw < dwSize; dw++, ((BYTE huge *)pb)++)
|
||
|
|
*pb = xlat[*pb];
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// DibNewPalette
|
||
|
|
//
|
||
|
|
// Performs three functions:
|
||
|
|
// 1. Updates the biClrUsed field if biBitCount <= 8.
|
||
|
|
// 2. Remaps BI_RGB images through a LUT when a new palette is assigned.
|
||
|
|
// 3. Copies the palette entries into our global BITMAPINFO
|
||
|
|
//
|
||
|
|
// Returns: TRUE on success
|
||
|
|
//
|
||
|
|
DWORD DibNewPalette (LPCAPSTREAM lpcs, HPALETTE hPalNew)
|
||
|
|
{
|
||
|
|
LPBITMAPINFOHEADER lpbi;
|
||
|
|
int n;
|
||
|
|
short nColors;
|
||
|
|
BYTE FAR * lpBits;
|
||
|
|
RGBQUAD FAR * lpRgb;
|
||
|
|
BYTE xlat[256];
|
||
|
|
DWORD dwSize;
|
||
|
|
PALETTEENTRY pe;
|
||
|
|
|
||
|
|
if (!hPalNew || !lpcs->lpBits || !lpcs->lpBitsInfo)
|
||
|
|
return FALSE;
|
||
|
|
|
||
|
|
lpbi = &(lpcs->lpBitsInfo->bmiHeader);
|
||
|
|
lpRgb = (RGBQUAD FAR *)((LPSTR)lpbi + (UINT)lpbi->biSize);
|
||
|
|
lpBits = lpcs->lpBits;
|
||
|
|
|
||
|
|
GetObject(hPalNew, sizeof(short), (LPSTR) &nColors);
|
||
|
|
if (nColors > 256)
|
||
|
|
nColors = 256;
|
||
|
|
|
||
|
|
// Get the palette entries regardless of the compression
|
||
|
|
// Supermac uses non BI_RGB with a palette!
|
||
|
|
|
||
|
|
if (lpbi->biBitCount == 8) {
|
||
|
|
for (n=0; n<nColors; n++) {
|
||
|
|
GetPaletteEntries(hPalNew, n, 1, &pe);
|
||
|
|
lpRgb[n].rgbRed = pe.peRed;
|
||
|
|
lpRgb[n].rgbGreen = pe.peGreen;
|
||
|
|
lpRgb[n].rgbBlue = pe.peBlue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (lpbi->biBitCount == 8 && lpbi->biCompression == BI_RGB) {
|
||
|
|
|
||
|
|
//
|
||
|
|
// build a xlat table. from the old Palette to the new palette.
|
||
|
|
//
|
||
|
|
for (n=0; n<(int)lpbi->biClrUsed; n++) {
|
||
|
|
xlat[n] = (BYTE)GetNearestPaletteIndex(hPalNew,
|
||
|
|
RGB(lpRgb[n].rgbRed,lpRgb[n].rgbGreen,lpRgb[n].rgbBlue));
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// translate the DIB bits
|
||
|
|
//
|
||
|
|
if ((dwSize = lpbi->biSizeImage) == 0)
|
||
|
|
dwSize = lpbi->biHeight * DIBWIDTHBYTES(*lpbi);
|
||
|
|
|
||
|
|
switch ((WORD)lpbi->biCompression)
|
||
|
|
{
|
||
|
|
case BI_RGB:
|
||
|
|
xlatClut8(lpBits, dwSize, xlat);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Fix for Supermac, force biClrUsed to the number of palette entries
|
||
|
|
// even if non-BI_RGB formats.
|
||
|
|
|
||
|
|
if (lpbi->biBitCount <= 8)
|
||
|
|
lpbi->biClrUsed = nColors;
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* DibPaint(LPCAPSTREAM lpcs, hdc)
|
||
|
|
*
|
||
|
|
* Paint the current DIB into the window;
|
||
|
|
*/
|
||
|
|
void DibPaint(LPCAPSTREAM lpcs, HDC hdc)
|
||
|
|
{
|
||
|
|
RECT rc;
|
||
|
|
BOOL fOK;
|
||
|
|
|
||
|
|
fOK = (lpcs->lpBits != NULL);
|
||
|
|
|
||
|
|
if (fOK) {
|
||
|
|
if (lpcs->fScale) {
|
||
|
|
GetClientRect(lpcs->hwnd, &rc);
|
||
|
|
fOK = DrawDibDraw(lpcs->hdd, hdc, 0, 0,
|
||
|
|
rc.right - rc.left, rc.bottom - rc.top,
|
||
|
|
(LPBITMAPINFOHEADER)lpcs->lpBitsInfo, lpcs->lpBits,
|
||
|
|
0, 0, -1, -1,
|
||
|
|
#if defined _WIN32 && defined UNICODE
|
||
|
|
0 // we don't support BACKGROUNDPAL yet in drawdib
|
||
|
|
#else
|
||
|
|
DDF_BACKGROUNDPAL
|
||
|
|
#endif
|
||
|
|
);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
fOK = DrawDibDraw(lpcs->hdd, hdc, 0, 0,
|
||
|
|
lpcs->dxBits, lpcs->dyBits,
|
||
|
|
(LPBITMAPINFOHEADER)lpcs->lpBitsInfo, lpcs->lpBits,
|
||
|
|
0, 0, -1, -1,
|
||
|
|
#if defined _WIN32 && defined UNICODE
|
||
|
|
0 // we don't support BACKGROUNDPAL yet in drawdib
|
||
|
|
#else
|
||
|
|
DDF_BACKGROUNDPAL
|
||
|
|
#endif
|
||
|
|
);
|
||
|
|
|
||
|
|
}
|
||
|
|
if (!fOK) {
|
||
|
|
SelectObject(hdc, GetStockObject(BLACK_BRUSH));
|
||
|
|
GetClientRect(lpcs->hwnd, &rc);
|
||
|
|
PatBlt(hdc, 0, 0, rc.right, rc.bottom, PATCOPY);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
*
|
||
|
|
* CreatePackedDib() - return the current DIB in packed (ie CF_DIB) format
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
HANDLE CreatePackedDib (LPBITMAPINFO lpBitsInfo, LPSTR lpSrcBits, HPALETTE hPalette)
|
||
|
|
{
|
||
|
|
HANDLE hdib;
|
||
|
|
LPBITMAPINFO lpbi;
|
||
|
|
int i;
|
||
|
|
DWORD dwSize;
|
||
|
|
PALETTEENTRY pe;
|
||
|
|
LPBYTE lpBits;
|
||
|
|
RGBQUAD FAR * lpRgb;
|
||
|
|
|
||
|
|
// If the data is compressed, let ICM do the work for us...
|
||
|
|
if (lpBitsInfo->bmiHeader.biCompression != BI_RGB &&
|
||
|
|
lpBitsInfo->bmiHeader.biCompression != BI_RLE8 &&
|
||
|
|
(lpBitsInfo->bmiHeader.biBitCount != 8 ||
|
||
|
|
lpBitsInfo->bmiHeader.biBitCount != 24 )) {
|
||
|
|
|
||
|
|
LPBITMAPINFO lpOutFormat = NULL;
|
||
|
|
HANDLE hPackedDIBOut = NULL;
|
||
|
|
|
||
|
|
if (!(lpOutFormat = (LPBITMAPINFO)GlobalAllocPtr(
|
||
|
|
GMEM_MOVEABLE, sizeof (BITMAPINFOHEADER) +
|
||
|
|
256 * sizeof (RGBQUAD))))
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
CopyMemory (lpOutFormat, lpBitsInfo, sizeof (BITMAPINFOHEADER));
|
||
|
|
|
||
|
|
// Try to get an RGB format
|
||
|
|
lpOutFormat->bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
|
||
|
|
lpOutFormat->bmiHeader.biCompression = BI_RGB;
|
||
|
|
lpOutFormat->bmiHeader.biClrUsed = 0;
|
||
|
|
lpOutFormat->bmiHeader.biClrImportant = 0;
|
||
|
|
|
||
|
|
// Uh, oh, force to a 24-bit DIB if > 8 BPP
|
||
|
|
if (lpBitsInfo->bmiHeader.biBitCount <= 8)
|
||
|
|
lpOutFormat->bmiHeader.biBitCount = 8;
|
||
|
|
else
|
||
|
|
lpOutFormat->bmiHeader.biBitCount = 24;
|
||
|
|
|
||
|
|
lpOutFormat->bmiHeader.biSizeImage =
|
||
|
|
WIDTHBYTES (lpOutFormat->bmiHeader.biWidth *
|
||
|
|
(lpOutFormat->bmiHeader.biBitCount == 8 ? 1 : 3)) *
|
||
|
|
lpOutFormat->bmiHeader.biHeight;
|
||
|
|
|
||
|
|
hPackedDIBOut = ICImageDecompress (
|
||
|
|
NULL, /*hic*/
|
||
|
|
0, /*uiFlags*/
|
||
|
|
lpBitsInfo, /*lpbiIn*/
|
||
|
|
lpSrcBits, /*lpBits*/
|
||
|
|
lpOutFormat); /*use default format chosen by compressor*/
|
||
|
|
|
||
|
|
if (lpOutFormat)
|
||
|
|
GlobalFreePtr (lpOutFormat);
|
||
|
|
|
||
|
|
return (hPackedDIBOut);
|
||
|
|
}
|
||
|
|
|
||
|
|
dwSize = lpBitsInfo->bmiHeader.biSize +
|
||
|
|
lpBitsInfo->bmiHeader.biClrUsed * sizeof(RGBQUAD) +
|
||
|
|
lpBitsInfo->bmiHeader.biSizeImage;
|
||
|
|
|
||
|
|
hdib = GlobalAlloc(GMEM_MOVEABLE, dwSize);
|
||
|
|
|
||
|
|
if (!hdib)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
lpbi = (LPVOID)GlobalLock(hdib);
|
||
|
|
|
||
|
|
//
|
||
|
|
// copy the header
|
||
|
|
//
|
||
|
|
CopyMemory (lpbi, lpBitsInfo, lpBitsInfo->bmiHeader.biSize);
|
||
|
|
|
||
|
|
//
|
||
|
|
// copy the color table
|
||
|
|
//
|
||
|
|
lpRgb = (RGBQUAD FAR *)((LPSTR)lpbi + (WORD)lpbi->bmiHeader.biSize);
|
||
|
|
for (i=0; i < (int)lpBitsInfo->bmiHeader.biClrUsed; i++) {
|
||
|
|
GetPaletteEntries(hPalette, i, 1, &pe);
|
||
|
|
lpRgb[i].rgbRed = pe.peRed;
|
||
|
|
lpRgb[i].rgbGreen = pe.peGreen;
|
||
|
|
lpRgb[i].rgbBlue = pe.peBlue;
|
||
|
|
lpRgb[i].rgbReserved = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// copy the bits.
|
||
|
|
//
|
||
|
|
lpBits = (LPBYTE)lpbi +
|
||
|
|
lpbi->bmiHeader.biSize +
|
||
|
|
lpbi->bmiHeader.biClrUsed * sizeof(RGBQUAD);
|
||
|
|
|
||
|
|
CopyMemory (lpBits, lpSrcBits,
|
||
|
|
lpbi->bmiHeader.biSizeImage);
|
||
|
|
|
||
|
|
GlobalUnlock (hdib);
|
||
|
|
|
||
|
|
return hdib;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*---------------------------------------------------------------------+
|
||
|
|
| dibIsWritable() - return TRUE if the dib format is writable, |
|
||
|
|
| by out dibWrite() function, FALSE if not. |
|
||
|
|
| |
|
||
|
|
+---------------------------------------------------------------------*/
|
||
|
|
BOOL FAR PASCAL dibIsWritable (LPBITMAPINFO lpBitsInfo)
|
||
|
|
{
|
||
|
|
if (!lpBitsInfo)
|
||
|
|
return FALSE;
|
||
|
|
|
||
|
|
// For now, just assume that all capture formats have an installed
|
||
|
|
// codec which can convert to RGB. In the future, each time the
|
||
|
|
// format is changed, test that the codec actually accepts the format.
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*---------------------------------------------------------------------+
|
||
|
|
| dibWrite() - write out the DIB to a file. The global header is |
|
||
|
|
| in <glpBitsInfo> and the actual dib bits are in |
|
||
|
|
| <glpBits>. If it is palettized then the palette is in |
|
||
|
|
| <ghPalCurrent>. |
|
||
|
|
| |
|
||
|
|
| We won't do error reporting in this function, let the caller take |
|
||
|
|
| care of that along with Opening and Closing the HMMIO. |
|
||
|
|
| |
|
||
|
|
+---------------------------------------------------------------------*/
|
||
|
|
BOOL FAR PASCAL dibWrite(LPCAPSTREAM lpcs, HMMIO hmmio)
|
||
|
|
{
|
||
|
|
BITMAPFILEHEADER bfh;
|
||
|
|
DWORD dw;
|
||
|
|
HANDLE hPackedDib = NULL;
|
||
|
|
LPBITMAPINFO lpbi = NULL;
|
||
|
|
BOOL fOK = FALSE;
|
||
|
|
|
||
|
|
/* do some checking */
|
||
|
|
WinAssert(hmmio != 0);
|
||
|
|
|
||
|
|
if (!lpcs->lpBits || !lpcs->lpBitsInfo)
|
||
|
|
return FALSE;
|
||
|
|
|
||
|
|
// Create a packed DIB, converting from a compressed format,
|
||
|
|
// if necessary.
|
||
|
|
hPackedDib = CreatePackedDib (lpcs->lpBitsInfo,
|
||
|
|
lpcs->lpBits,
|
||
|
|
lpcs->hPalCurrent);
|
||
|
|
|
||
|
|
lpbi = (LPBITMAPINFO) GlobalLock (hPackedDib);
|
||
|
|
|
||
|
|
if (!lpbi)
|
||
|
|
goto WriteError;
|
||
|
|
|
||
|
|
/* initialize the bitmap file header */
|
||
|
|
bfh.bfType = 'B' | 'M' << 8;
|
||
|
|
bfh.bfSize = sizeof(bfh) + sizeof(BITMAPINFOHEADER) +
|
||
|
|
lpbi->bmiHeader.biSizeImage +
|
||
|
|
(lpbi->bmiHeader.biBitCount > 8 ? 0 : (lpbi->bmiHeader.biClrUsed * sizeof(RGBQUAD)));
|
||
|
|
|
||
|
|
bfh.bfReserved1 = bfh.bfReserved2 = 0;
|
||
|
|
bfh.bfOffBits = bfh.bfSize - lpbi->bmiHeader.biSizeImage ;
|
||
|
|
|
||
|
|
// dw is the size of the BITMAPINFO + color table + image
|
||
|
|
dw = bfh.bfSize - sizeof(bfh);
|
||
|
|
|
||
|
|
/* write out the file header portion */
|
||
|
|
if (mmioWrite(hmmio, (HPSTR)&bfh, (LONG)sizeof(BITMAPFILEHEADER)) !=
|
||
|
|
sizeof(BITMAPFILEHEADER)){
|
||
|
|
goto WriteError;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* now write out the header and bits */
|
||
|
|
if (mmioWrite(hmmio, (HPSTR)lpbi, (LONG) dw) == (LONG) dw) {
|
||
|
|
fOK = TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
WriteError:
|
||
|
|
if (lpbi)
|
||
|
|
GlobalUnlock (hPackedDib);
|
||
|
|
if (hPackedDib)
|
||
|
|
GlobalFree (hPackedDib);
|
||
|
|
|
||
|
|
return fOK;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*--------------------------------------------------------------+
|
||
|
|
| fileSaveDIB - save the frame as a DIB |
|
||
|
|
| Top level routine to save a single frame |
|
||
|
|
+--------------------------------------------------------------*/
|
||
|
|
BOOL FAR PASCAL fileSaveDIB(LPCAPSTREAM lpcs, LPTSTR lpszFileName)
|
||
|
|
{
|
||
|
|
HMMIO hmmio;
|
||
|
|
HCURSOR hOldCursor;
|
||
|
|
BOOL fOK;
|
||
|
|
|
||
|
|
hmmio = mmioOpen(lpszFileName, NULL, MMIO_WRITE);
|
||
|
|
if( !hmmio ) {
|
||
|
|
/* try and create */
|
||
|
|
hmmio = mmioOpen(lpszFileName, NULL, MMIO_CREATE | MMIO_WRITE);
|
||
|
|
if( !hmmio ) {
|
||
|
|
/* find out if the file was read only or we are just */
|
||
|
|
/* totally hosed up here. */
|
||
|
|
hmmio = mmioOpen(lpszFileName, NULL, MMIO_READ);
|
||
|
|
if (hmmio){
|
||
|
|
/* file was read only, error on it */
|
||
|
|
errorUpdateError (lpcs, IDS_CAP_READONLYFILE, (LPSTR)lpszFileName);
|
||
|
|
mmioClose(hmmio, 0);
|
||
|
|
return FALSE;
|
||
|
|
} else {
|
||
|
|
/* even weirder error has occured here, give CANTOPEN */
|
||
|
|
errorUpdateError (lpcs, IDS_CAP_CANTOPEN, (LPSTR) lpszFileName);
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
hOldCursor = SetCursor( lpcs->hWaitCursor );
|
||
|
|
|
||
|
|
mmioSeek(hmmio, 0, SEEK_SET);
|
||
|
|
|
||
|
|
fOK = dibWrite(lpcs, hmmio);
|
||
|
|
|
||
|
|
mmioClose( hmmio, 0 );
|
||
|
|
|
||
|
|
SetCursor( hOldCursor );
|
||
|
|
|
||
|
|
if (!fOK)
|
||
|
|
errorUpdateError (lpcs, IDS_CAP_ERRORDIBSAVE, (LPSTR) lpszFileName);
|
||
|
|
|
||
|
|
return fOK;
|
||
|
|
}
|