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1394 lines
46 KiB
1394 lines
46 KiB
/****************************************************************************
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*
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* capio.c
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*
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* i/o routines for video capture
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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 - 1995 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 USE_AVIFILE 1
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#define JMK_HACK_DONTWRITE TRUE
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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 <vfw.h>
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#include <mmreg.h>
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#include <mmddk.h>
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#include "ivideo32.h"
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#include "mmdebug.h"
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#ifdef USE_ACM
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#include <msacm.h>
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#endif
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#include "avicapi.h"
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#include "time.h"
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extern UINT GetSizeOfWaveFormat (LPWAVEFORMATEX lpwf);
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STATICFN BOOL IndexVideo (LPCAPSTREAM lpcs, DWORD dwSize, BOOL bKeyFrame);
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STATICFN BOOL IndexAudio (LPCAPSTREAM lpcs, DWORD dwSize);
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#ifdef _DEBUG
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#define DSTATUS(lpcs, sz) statusUpdateStatus(lpcs, IDS_CAP_INFO, (LPTSTR) TEXT(sz))
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#else
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#define DSTATUS(lpcs, sz)
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#endif
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//
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// Define function variables for dynamically linking to the async IO
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// completion routines on NT. This should allow the same code to run
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// on Win95 which does not have these entry points.
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//
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HANDLE (WINAPI *pfnCreateIoCompletionPort)(
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HANDLE FileHandle,
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HANDLE ExistingCompletionPort,
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DWORD CompletionKey,
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DWORD NumberOfConcurrentThreads
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);
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BOOL (WINAPI *pfnGetQueuedCompletionStatus)(
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HANDLE CompletionPort,
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LPDWORD lpNumberOfBytesTransferred,
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LPDWORD lpCompletionKey,
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LPOVERLAPPED *lpOverlapped,
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DWORD dwMilliseconds
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);
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HINSTANCE hmodKernel; // Handle to loaded Kernel32.dll
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#ifdef USE_AVIFILE
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#include "capio.avf"
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#else //---------------- ! using Avifile ----------------------------
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// The following are anded with the size in the index
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#define IS_AUDIO_CHUNK 0x80000000
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#define IS_KEYFRAME_CHUNK 0x40000000
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#define IS_DUMMY_CHUNK 0x20000000
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#define IS_GRANULAR_CHUNK 0x10000000
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#define INDEX_MASK (IS_AUDIO_CHUNK | IS_KEYFRAME_CHUNK | IS_DUMMY_CHUNK | IS_GRANULAR_CHUNK)
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// Add an index entry for a video frame
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// dwSize is the size of data ONLY, not including the chunk or junk
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// Returns: TRUE if index space is not exhausted
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//
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STATICFN BOOL IndexVideo (LPCAPSTREAM lpcs, DWORD dwSize, BOOL bKeyFrame)
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{
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if (lpcs->dwIndex < lpcs->sCapParms.dwIndexSize) {
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*lpcs->lpdwIndexEntry = dwSize | (bKeyFrame ? IS_KEYFRAME_CHUNK : 0);
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++lpcs->lpdwIndexEntry;
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++lpcs->dwIndex;
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++lpcs->dwVideoChunkCount;
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return TRUE;
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}
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dprintf("\n***WARNING*** Indexvideo space exhausted\n");
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return FALSE;
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}
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// Add an index entry for an audio buffer
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// dwSize is the size of data ONLY, not including the chunk or junk
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// Returns: TRUE if index space is not exhausted
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//
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STATICFN BOOL IndexAudio (LPCAPSTREAM lpcs, DWORD dwSize)
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{
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if (lpcs->dwIndex < lpcs->sCapParms.dwIndexSize) {
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*lpcs->lpdwIndexEntry = dwSize | IS_AUDIO_CHUNK;
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++lpcs->lpdwIndexEntry;
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++lpcs->dwIndex;
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++lpcs->dwWaveChunkCount;
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return TRUE;
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}
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dprintf("\n***WARNING*** Indexaudio space exhausted\n");
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return FALSE;
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}
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DWORD CalcWaveBufferSize (LPCAPSTREAM lpcs)
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{
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DWORD dw;
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if (!lpcs->lpWaveFormat)
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return 0L;
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// at least .5 second
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dw = lpcs->lpWaveFormat->nAvgBytesPerSec / 2;
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if (lpcs->sCapParms.wChunkGranularity) {
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if (dw % lpcs->sCapParms.wChunkGranularity) {
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dw += lpcs->sCapParms.wChunkGranularity -
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dw % lpcs->sCapParms.wChunkGranularity;
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}
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}
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dw = max ((1024L * 16), dw); // at least 16K
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dw -= sizeof(RIFF);
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dprintf("Wave buffer size = %ld", dw);
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return dw;
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}
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/*
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* AVIPreloadFat
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*
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* Force FAT for this file to be loaded into the FAT cache
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*
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*/
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VOID WINAPI AVIPreloadFat (LPCAPSTREAM lpcs)
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{
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DWORD dw;
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#ifdef CHICAGO
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DWORD dwPos;
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assert (lpcs->lpDropFrame);
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// save the current file pointer then seek to the end of the file
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//
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dwPos = SetFilePointer (lpcs->hFile, 0, NULL, FILE_CURRENT);
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dw = SetFilePointer (lpcs->hFile, 0, NULL, FILE_END);
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if ((dw == (DWORD)-1) || (dw < lpcs->dwBytesPerSector)) {
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// put the file pointer back to where it was
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SetFilePointer (lpcs->hFile, dwPos, NULL, FILE_BEGIN);
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return;
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}
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// read the last sector of the file, just to force
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// the fat for the file to be loaded
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//
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ReadFile (lpcs->hFile, lpcs->lpDropFrame, lpcs->dwBytesPerSector, &dw, NULL);
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// put the file pointer back to where it was
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//
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SetFilePointer (lpcs->hFile, dwPos, NULL, FILE_BEGIN);
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#else
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// Load all the FAT information. On NT this is sufficient for FAT
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// files. On NTFS partitiions there is no way we can read in all the
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// mapping information.
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GetFileSize(lpcs->hFile, &dw);
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#endif
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}
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#ifdef JMK_HACK_DONTWRITE
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static BOOL bDontWrite;
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#endif
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// Write data to the capture file
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// Returns: TRUE on a successful write
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//
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UINT NEAR PASCAL AVIWrite (
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LPCAPSTREAM lpcs,
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LPVOID pbuf,
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DWORD dwSize,
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UINT uIndex, // index of header for this buffer, -1 for step capture
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UINT uType,
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LPBOOL lpbPending)
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{
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DWORD dwWritten;
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DWORD dwGran;
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// the buffer must be sector aligned if using non-buffered IO
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// and the size must be at least word aligned
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// uIndex == -1 if this is a dummy frame write
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// uIndex == Index into alpVideoHdr OR index in alpWaveHdr based on uType
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//
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assert (!lpcs->fUsingNonBufferedIO || (!((DWORD_PTR)pbuf & (lpcs->dwBytesPerSector - 1))));
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assert (!(dwSize & 1));
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assert (dwSize);
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assert (*lpbPending == FALSE);
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// if we are doing non-buffered io, we need to pad each write
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// to an even multiple of sector size bytes, we do this by adding
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// a junk riff chunk into the write buffer after dwSize bytes
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//
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dwGran = lpcs->sCapParms.wChunkGranularity;
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if (lpcs->fUsingNonBufferedIO)
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dwGran = max (lpcs->dwBytesPerSector,
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(DWORD) lpcs->sCapParms.wChunkGranularity);
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assert (dwGran);
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if (dwSize % dwGran)
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{
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DWORD dwSizeT = dwGran - (dwSize % dwGran);
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LPRIFF priff = (LPRIFF)((LPBYTE)pbuf + dwSize + (dwSize & 1));
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if (dwSizeT < sizeof(RIFF))
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dwSizeT += dwGran;
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// add the junk riff chunk to the end of the buffer
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//
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priff->dwType = ckidAVIPADDING;
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priff->dwSize = dwSizeT - sizeof(RIFF);
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dwSize += dwSizeT;
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}
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#ifdef _DEBUG
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if (dwSize)
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{
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volatile BYTE bt;
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AuxDebugEx (8, DEBUGLINE "touch test of AviWrite buffer %08X\r\n", pbuf);
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bt = ((LPBYTE)pbuf)[dwSize-1];
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}
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// List all of the RIFF chunks within the block being written
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//
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dwWritten = 0;
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while (dwWritten < dwSize)
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{
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LPRIFF priff = (LPVOID)((LPBYTE)pbuf + dwWritten);
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AuxDebugEx (4, DEBUGLINE "RIFF=%.4s size=%08X\r\n",
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&priff->dwType, priff->dwSize);
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dwWritten += priff->dwSize + sizeof(RIFF);
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}
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#endif
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// BUGBUG, Remove the following line when done performance testing
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#ifdef JMK_HACK_DONTWRITE
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if (bDontWrite)
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return 0;
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#endif
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if (lpcs->pAsync)
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{
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struct _avi_async * lpah = &lpcs->pAsync[lpcs->iLastAsync];
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UINT iLastAsync;
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// set iLastAsync to point to what lpcs->iLastAsync
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// would be if we were to increment it. If we end up
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// with an i/o that does not complete synchronously
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// we will then update lpcs->iLastAsync so that we can
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// remember to check for completion later
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//
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if ((iLastAsync = lpcs->iLastAsync+1) >= lpcs->iNumAsync)
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iLastAsync = 0;
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// is the async buffer that we are trying to use
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// already in use?
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//
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if (iLastAsync == lpcs->iNextAsync) {
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AuxDebugEx(1, DEBUGLINE "async buffer already in use\r\n");
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return IDS_CAP_FILE_WRITE_ERROR;
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}
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assert (!lpah->uType);
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// init the async buffer with the info that we will need
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// to release the buffer when the io is complete
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//
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ZeroMemory (&lpah->ovl, sizeof(lpah->ovl));
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if (uIndex == -1) {
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// We want a synchronous write
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assert (!(((DWORD_PTR)(lpcs->heSyncWrite))&1));
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lpah->ovl.hEvent = (HANDLE)(((DWORD_PTR)lpcs->heSyncWrite) | 1);
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// OR'ing hEvent with 1 prevents the IOCompletionPort being used
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// ...and I know this sounds a bit tacky but this is what the
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// docs actually say.
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} else {
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lpah->ovl.hEvent = 0;
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}
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lpah->ovl.Offset = lpcs->dwAsyncWriteOffset;
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// attempt an async write. if WriteFile fails, we then
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// need to check if it's a real failure, or just an instance
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// of delayed completion. if delayed completion, we fill out
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// the lpah structure so that we know what buffer to re-use
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// when the io finally completes.
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//
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if ( ! WriteFile (lpcs->hFile, pbuf, dwSize, &dwWritten, &lpah->ovl))
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{
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UINT n = GetLastError();
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if ((ERROR_IO_PENDING == n) || (ERROR_INVALID_HANDLE == n))
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{
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// if we are passed a index of -1, that means that
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// this buffer is not associated with any entry in the
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// header array. in this case, we must have the io complete
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// before we return from this function.
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//
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if (uIndex == (UINT)-1)
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{
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AuxDebugEx(3, "Waiting for a block to write synchonously\n");
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if ( ! GetOverlappedResult (lpcs->hFile, &lpah->ovl, &dwWritten, TRUE))
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{
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AuxDebugEx (1, DEBUGLINE "WriteFile failed %d\r\n", GetLastError());
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return IDS_CAP_FILE_WRITE_ERROR;
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}
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}
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else
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{
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// io is begun, but not yet completed. so setup info in
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// the pending io array so that we can check later for completion
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//
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*lpbPending = TRUE;
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lpah->uType = uType | ASYNCIOPENDING;
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lpah->uIndex = uIndex;
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AuxDebugEx(2, DEBUGLINE "IOPending... iLastAsync was %d, will be %d, uIndex=%d, Event=%d\r\n",lpcs->iLastAsync , iLastAsync, uIndex, lpah->ovl.hEvent);
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lpcs->iLastAsync = iLastAsync;
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}
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}
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else
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{
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AuxDebugEx (1, DEBUGLINE "WriteFile failed %d\r\n", GetLastError());
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return IDS_CAP_FILE_WRITE_ERROR;
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}
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}
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|
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// we get to here only when the io succeeds or is pending
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// so update the seek offset for use in the next write operation
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//
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lpcs->dwAsyncWriteOffset += dwSize;
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}
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else
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{
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// We are writing synchronously to the file
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if (!WriteFile (lpcs->hFile, pbuf, dwSize, &dwWritten, NULL) ||
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!(dwWritten == dwSize))
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return IDS_CAP_FILE_WRITE_ERROR;
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}
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return 0;
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}
|
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|
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/*
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* CapFileInit
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*
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* Perform all initialization required to write a capture file.
|
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*
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* We take a slightly strange approach: We don't write
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* out the header until we're done capturing. For now,
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* we just seek 2K into the file, which is where all of
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* the real data will go.
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*
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* When we're done, we'll come back and write out the header,
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* because then we'll know all of the values we need.
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*
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* Also allocate and init the index.
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*/
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BOOL CapFileInit (LPCAPSTREAM lpcs)
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{
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LONG l;
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LPBITMAPINFO lpBitsInfoOut; // Possibly compressed output format
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DWORD dwOpenFlags;
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|
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// No special video format given -- use the default
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lpBitsInfoOut = lpcs->CompVars.lpbiOut;
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if (lpcs->CompVars.hic == NULL)
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lpBitsInfoOut = lpcs->lpBitsInfo;
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|
|
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assert (lpcs->hmmio == NULL); // Should never have a file handle on entry
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|
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// if the capture file has not been set then set it now
|
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if (!(*lpcs->achFile))
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goto INIT_FILE_OPEN_ERROR;
|
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|
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// Get the Bytes per sector for the drive
|
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{
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DWORD dwSectorsPerCluster;
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DWORD dwFreeClusters;
|
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DWORD dwClusters;
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TCHAR szFullPathName[MAX_PATH];
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LPTSTR pszFilePart;
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|
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GetFullPathName (lpcs->achFile,
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NUMELMS (szFullPathName),
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szFullPathName,
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&pszFilePart);
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|
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if (szFullPathName[1] == TEXT(':') && szFullPathName[2] == TEXT('\\')) {
|
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szFullPathName[3] = TEXT('\0'); // Terminate after "x:\"
|
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|
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GetDiskFreeSpace (szFullPathName,
|
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&dwSectorsPerCluster,
|
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&lpcs->dwBytesPerSector,
|
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&dwFreeClusters,
|
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&dwClusters);
|
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AuxDebugEx (3, DEBUGLINE "BytesPerSector=%d\r\n",
|
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lpcs->dwBytesPerSector);
|
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}
|
|
else {
|
|
// This handles cases where we do not have a "x:\" filename
|
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// Principally this will be "\\server\name\path..."
|
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lpcs->dwBytesPerSector = DEFAULT_BYTESPERSECTOR;
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AuxDebugEx (3, DEBUGLINE "FullPath=%s\r\n", szFullPathName);
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AuxDebugEx (3, DEBUGLINE "GetFullPath failed, Forcing dwBytesPerSector to %d\r\n",DEFAULT_BYTESPERSECTOR);
|
|
}
|
|
|
|
// bytes per sector must be non-zero and a power of two
|
|
//
|
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assert (lpcs->dwBytesPerSector);
|
|
assert (!(lpcs->dwBytesPerSector & (lpcs->dwBytesPerSector-1)));
|
|
}
|
|
|
|
#ifdef ZERO_THE_FILE_FOR_TESTING
|
|
{
|
|
char c[64 * 1024];
|
|
DWORD dwSize;
|
|
DWORD dwBW;
|
|
// Open the file just to zero it
|
|
|
|
lpcs->hFile = CreateFile (lpcs->achFile,
|
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GENERIC_READ | GENERIC_WRITE,
|
|
FILE_SHARE_READ,
|
|
NULL,
|
|
OPEN_ALWAYS,
|
|
FILE_ATTRIBUTE_NORMAL,
|
|
NULL);
|
|
|
|
if (lpcs->hFile == INVALID_HANDLE_VALUE) {
|
|
lpcs->hFile = 0;
|
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goto INIT_FILE_OPEN_ERROR;
|
|
}
|
|
|
|
ZeroMemory (c, sizeof(c));
|
|
SetFilePointer (lpcs->hFile, 0, NULL, FILE_BEGIN);
|
|
dwSize = GetFileSize (lpcs->hFile, NULL);
|
|
|
|
while (SetFilePointer (lpcs->hFile, 0, NULL, FILE_CURRENT) < dwSize)
|
|
WriteFile (lpcs->hFile, c, sizeof(c), &dwBW, NULL);
|
|
}
|
|
|
|
CloseHandle(lpcs->hFile); // Close the "normal" open
|
|
#endif
|
|
|
|
// We can use non-buffered I/O if the ChunkGranularity is
|
|
// a multiple of BytesPerSector. Better check that wChunkGranularity
|
|
// has indeed been set
|
|
|
|
if (0 == lpcs->sCapParms.wChunkGranularity)
|
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lpcs->sCapParms.wChunkGranularity = lpcs->dwBytesPerSector;
|
|
|
|
dwOpenFlags = FILE_ATTRIBUTE_NORMAL;
|
|
lpcs->fUsingNonBufferedIO =
|
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(lpcs->sCapParms.wChunkGranularity >= lpcs->dwBytesPerSector) &&
|
|
((lpcs->sCapParms.wChunkGranularity % lpcs->dwBytesPerSector) == 0) &&
|
|
(lpcs->CompVars.hic == NULL) &&
|
|
(!(lpcs->fCaptureFlags & CAP_fStepCapturingNow)) &&
|
|
(!(lpcs->fCaptureFlags & CAP_fFrameCapturingNow));
|
|
|
|
AuxDebugEx (3, DEBUGLINE "fUsingNonBufferedIO=%d\r\n", lpcs->fUsingNonBufferedIO);
|
|
|
|
// setup CreateFile flags based on whether we are using
|
|
// non-buffered io and/or overlapped io
|
|
//
|
|
if (lpcs->fUsingNonBufferedIO)
|
|
{
|
|
dwOpenFlags |= FILE_FLAG_NO_BUFFERING;
|
|
#ifdef CHICAGO
|
|
#define DOASYNCIO FALSE
|
|
#pragma message (SQUAWK "find a better way to set AsyncIO flag")
|
|
#else
|
|
#define DOASYNCIO TRUE
|
|
#endif
|
|
#ifdef CHICAGO
|
|
if (GetProfileIntA ("Avicap32", "AsyncIO", DOASYNCIO))
|
|
#else
|
|
if (!pfnCreateIoCompletionPort) {
|
|
hmodKernel = LoadLibrary(TEXT("kernel32"));
|
|
if (hmodKernel) {
|
|
|
|
#define IOCP (void *(__stdcall *)(void *,void *,unsigned long ,unsigned long ))
|
|
#define GQCS (int (__stdcall *)(void *,unsigned long *,unsigned long *,struct _OVERLAPPED ** ,unsigned long ))
|
|
pfnCreateIoCompletionPort = IOCP GetProcAddress(hmodKernel, "CreateIoCompletionPort");
|
|
pfnGetQueuedCompletionStatus = GQCS GetProcAddress(hmodKernel, "GetQueuedCompletionStatus");
|
|
if (!pfnCreateIoCompletionPort && !pfnGetQueuedCompletionStatus) {
|
|
pfnCreateIoCompletionPort = NULL;
|
|
pfnGetQueuedCompletionStatus = NULL;
|
|
FreeLibrary(hmodKernel);
|
|
}
|
|
}
|
|
}
|
|
DPF("CreateIoCompletionPort @%x", pfnCreateIoCompletionPort);
|
|
DPF("GetQueuedCompletionStatus @%x", pfnGetQueuedCompletionStatus);
|
|
|
|
// give a way to override the async default option.
|
|
if (!GetProfileIntA ("Avicap32", "AsyncIO", DOASYNCIO)
|
|
|| !pfnCreateIoCompletionPort) {
|
|
AuxDebugEx (2, DEBUGLINE "NOT doing Async IO\r\n");
|
|
} else
|
|
#endif
|
|
{
|
|
AuxDebugEx (3, DEBUGLINE "Doing Async IO\r\n");
|
|
dwOpenFlags |= FILE_FLAG_OVERLAPPED;
|
|
|
|
// We are requested to do async io. Allocate an array
|
|
// of async io headers and initialize the async io fields
|
|
// in the CAPSTREAM structure
|
|
//
|
|
{
|
|
UINT iNumAsync = NUMELMS(lpcs->alpVideoHdr) + NUMELMS(lpcs->alpWaveHdr) + 2;
|
|
// This is quite a lot of buffers. Perhaps we should limit
|
|
// ourselves to lpcs->iNumVideo and lpcs->iNumAudio EXCEPT
|
|
// these fields have not yet been set up. We would need
|
|
// to look in the cap stream structure to get the information.
|
|
// It is simpler to assume the maximum numbers.
|
|
// Set the offset for the first write to the file
|
|
lpcs->dwAsyncWriteOffset = lpcs->dwAVIHdrSize;
|
|
lpcs->iNextAsync = lpcs->iLastAsync = 0;
|
|
// Create the manual reset event for synchronous writing
|
|
if ((lpcs->heSyncWrite = CreateEvent(NULL, TRUE, FALSE, NULL))
|
|
&& (NULL != (lpcs->pAsync = (LPVOID)GlobalAllocPtr (GMEM_MOVEABLE | GMEM_ZEROINIT,
|
|
sizeof(*lpcs->pAsync) * iNumAsync)))) {
|
|
lpcs->iNumAsync = iNumAsync;
|
|
} else {
|
|
// cannot allocate the memory. Go synchronous
|
|
dprintf("Failed to allocate async buffers");
|
|
if (lpcs->heSyncWrite) {
|
|
CloseHandle(lpcs->heSyncWrite);
|
|
lpcs->heSyncWrite = 0;
|
|
}
|
|
dwOpenFlags &= ~(FILE_FLAG_OVERLAPPED);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Open the capture file, using Non Buffered I/O
|
|
// if possible, given sector size, and buffer granularity
|
|
//
|
|
reopen:
|
|
lpcs->hFile = CreateFile (lpcs->achFile,
|
|
GENERIC_READ | GENERIC_WRITE,
|
|
FILE_SHARE_READ,
|
|
NULL,
|
|
OPEN_ALWAYS,
|
|
dwOpenFlags,
|
|
NULL);
|
|
|
|
if (lpcs->hFile == INVALID_HANDLE_VALUE) {
|
|
lpcs->hFile = 0;
|
|
goto INIT_FILE_OPEN_ERROR;
|
|
}
|
|
|
|
#ifdef ASYNCIO_PORT
|
|
if (dwOpenFlags & FILE_FLAG_OVERLAPPED) {
|
|
lpcs->hCompletionPort = pfnCreateIoCompletionPort(lpcs->hFile, NULL, (DWORD)1, 0);
|
|
|
|
if (!lpcs->hCompletionPort) {
|
|
// if we cannot create the completion port, write synchronously.
|
|
dwOpenFlags &= ~FILE_FLAG_OVERLAPPED;
|
|
CloseHandle(lpcs->hFile);
|
|
GlobalFreePtr(lpcs->pAsync);
|
|
lpcs->iNumAsync=0;
|
|
if (lpcs->heSyncWrite) {
|
|
CloseHandle(lpcs->heSyncWrite);
|
|
lpcs->heSyncWrite = 0;
|
|
}
|
|
DPF("COULD NOT create the async completion port");
|
|
goto reopen;
|
|
} else {
|
|
DPF("Created the async completion port");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// BUGBUG, Remove the following line when done performance testing
|
|
#ifdef JMK_HACK_DONTWRITE
|
|
bDontWrite = GetProfileIntA("AVICAP32", "DontWrite", FALSE);
|
|
#endif
|
|
|
|
// Seek to a multiple of ChunkGranularity + AVIHEADERSIZE.
|
|
// This is the point at which we'll start writing
|
|
// Later, we'll come back and fill in the AVI header and index.
|
|
|
|
// l is zero for standard wave and video formats
|
|
l = (GetSizeOfWaveFormat ((LPWAVEFORMATEX) lpcs->lpWaveFormat) -
|
|
sizeof (PCMWAVEFORMAT)) +
|
|
(lpBitsInfoOut->bmiHeader.biSize -
|
|
sizeof (BITMAPINFOHEADER));
|
|
|
|
// (2K + size of wave and video stream headers) rounded to next 2K
|
|
lpcs->dwAVIHdrSize = AVI_HEADERSIZE +
|
|
(((lpcs->cbInfoChunks + l + lpcs->sCapParms.wChunkGranularity - 1)
|
|
/ lpcs->sCapParms.wChunkGranularity) * lpcs->sCapParms.wChunkGranularity);
|
|
// we should assert that AVI_HEADERSIZE is a multiple of wChunkGranularity
|
|
|
|
|
|
dprintf("AVIHdrSize = %ld", lpcs->dwAVIHdrSize);
|
|
|
|
SetFilePointer (lpcs->hFile, lpcs->dwAVIHdrSize, NULL, FILE_BEGIN);
|
|
if (lpcs->pAsync) {
|
|
lpcs->dwAsyncWriteOffset = lpcs->dwAVIHdrSize;
|
|
}
|
|
|
|
// do all Index allocations
|
|
if (!InitIndex (lpcs))
|
|
CloseHandle (lpcs->hFile), lpcs->hFile = 0;
|
|
|
|
lpcs->dwVideoChunkCount = 0;
|
|
lpcs->dwWaveChunkCount = 0;
|
|
|
|
INIT_FILE_OPEN_ERROR:
|
|
if (lpcs->hFile) {
|
|
return(TRUE);
|
|
}
|
|
if (lpcs->pAsync) {
|
|
GlobalFreePtr(lpcs->pAsync), lpcs->pAsync=NULL;
|
|
}
|
|
if (lpcs->heSyncWrite) {
|
|
CloseHandle(lpcs->heSyncWrite);
|
|
lpcs->heSyncWrite = 0;
|
|
}
|
|
return (FALSE);
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// The index array is used to record the positions
|
|
// of every chunk in the RIFF (avi) file.
|
|
//
|
|
// what this array is:
|
|
//
|
|
// each entry contains the size of the data
|
|
// high order bits encode the type of data (audio / video)
|
|
// and whether the video chunk is a key frame, dropped frame, etc.
|
|
///////////////////////////////////////////////////////////////////////////
|
|
|
|
// Allocate the index table
|
|
// Returns: TRUE if index can be allocated
|
|
//
|
|
BOOL InitIndex (LPCAPSTREAM lpcs)
|
|
{
|
|
lpcs->dwIndex = 0;
|
|
|
|
// we assume that we have not already allocated an index
|
|
//
|
|
assert (lpcs->lpdwIndexStart == NULL);
|
|
|
|
// Limit index size between 1 minute at 30fps and 3 hours at 30fps
|
|
lpcs->sCapParms.dwIndexSize = max (lpcs->sCapParms.dwIndexSize, 1800);
|
|
lpcs->sCapParms.dwIndexSize = min (lpcs->sCapParms.dwIndexSize, 324000L);
|
|
dprintf("Max Index Size = %ld", lpcs->sCapParms.dwIndexSize);
|
|
|
|
if (lpcs->hIndex = GlobalAlloc (GMEM_MOVEABLE,
|
|
lpcs->sCapParms.dwIndexSize * sizeof (DWORD))) {
|
|
if (lpcs->lpdwIndexEntry =
|
|
lpcs->lpdwIndexStart = (LPDWORD)GlobalLock (lpcs->hIndex))
|
|
return TRUE; // Success
|
|
|
|
GlobalFree (lpcs->hIndex);
|
|
lpcs->hIndex = NULL;
|
|
}
|
|
lpcs->lpdwIndexStart = NULL;
|
|
return FALSE;
|
|
}
|
|
|
|
// Deallocate the index table
|
|
//
|
|
void FiniIndex (LPCAPSTREAM lpcs)
|
|
{
|
|
if (lpcs->hIndex) {
|
|
if (lpcs->lpdwIndexStart)
|
|
GlobalUnlock (lpcs->hIndex);
|
|
GlobalFree (lpcs->hIndex);
|
|
lpcs->hIndex = NULL;
|
|
}
|
|
lpcs->lpdwIndexStart = NULL;
|
|
}
|
|
|
|
|
|
|
|
// Write out the index at the end of the capture file.
|
|
// The single frame capture methods do not append
|
|
// JunkChunks! Audio chunks also now may have junk appended.
|
|
//
|
|
BOOL WriteIndex (LPCAPSTREAM lpcs, BOOL fJunkChunkWritten)
|
|
{
|
|
BOOL fChunkIsAudio;
|
|
BOOL fChunkIsKeyFrame;
|
|
BOOL fChunkIsDummy;
|
|
BOOL fChunkIsGranular;
|
|
DWORD dwIndex;
|
|
DWORD dw;
|
|
DWORD dwJunk;
|
|
DWORD off;
|
|
AVIINDEXENTRY avii;
|
|
MMCKINFO ck;
|
|
LPDWORD lpdw;
|
|
DWORD dwGran;
|
|
|
|
// determine which granularity (if any) to use
|
|
// when calculating junk appended
|
|
//
|
|
dwGran = 0;
|
|
if (fJunkChunkWritten)
|
|
{
|
|
dwGran = lpcs->sCapParms.wChunkGranularity;
|
|
if (lpcs->fUsingNonBufferedIO)
|
|
dwGran = max (lpcs->dwBytesPerSector, dwGran);
|
|
}
|
|
|
|
|
|
if (lpcs->dwIndex > lpcs->sCapParms.dwIndexSize)
|
|
return TRUE;
|
|
|
|
off = lpcs->dwAVIHdrSize;
|
|
|
|
ck.cksize = 0;
|
|
ck.ckid = ckidAVINEWINDEX;
|
|
ck.fccType = 0;
|
|
|
|
if (mmioCreateChunk(lpcs->hmmio,&ck,0)) {
|
|
dprintf("Failed to create chunk for index");
|
|
return FALSE;
|
|
}
|
|
|
|
lpdw = lpcs->lpdwIndexStart;
|
|
for (dwIndex= 0; dwIndex < lpcs->dwIndex; dwIndex++) {
|
|
|
|
dw = *lpdw++;
|
|
|
|
fChunkIsAudio = (BOOL) ((dw & IS_AUDIO_CHUNK) != 0);
|
|
fChunkIsKeyFrame = (BOOL) ((dw & IS_KEYFRAME_CHUNK) != 0);
|
|
fChunkIsDummy = (BOOL) ((dw & IS_DUMMY_CHUNK) != 0);
|
|
fChunkIsGranular = (BOOL) ((dw & IS_GRANULAR_CHUNK) != 0);
|
|
dw &= ~(INDEX_MASK);
|
|
|
|
if (fChunkIsAudio) {
|
|
avii.ckid = MAKEAVICKID(cktypeWAVEbytes, 1);
|
|
avii.dwFlags = 0;
|
|
} else {
|
|
avii.ckid = MAKEAVICKID(cktypeDIBbits, 0);
|
|
if (lpcs->lpBitsInfo->bmiHeader.biCompression == BI_RLE8)
|
|
avii.ckid = MAKEAVICKID(cktypeDIBcompressed, 0);
|
|
avii.dwFlags = fChunkIsKeyFrame ? AVIIF_KEYFRAME : 0;
|
|
}
|
|
avii.dwChunkLength = dw;
|
|
avii.dwChunkOffset = off;
|
|
|
|
if (mmioWrite(lpcs->hmmio, (LPVOID)&avii, sizeof(avii)) != sizeof(avii)) {
|
|
dprintf("Failed to write index chunk %d", dwIndex);
|
|
return FALSE;
|
|
}
|
|
|
|
dw += sizeof (RIFF);
|
|
// round to word boundary
|
|
//
|
|
dw += (dw & 1);
|
|
off += dw;
|
|
|
|
// If a Junk chunk was appended, move past it
|
|
//
|
|
if (fChunkIsGranular && dwGran && (off % dwGran)) {
|
|
dwJunk = dwGran - (off % dwGran);
|
|
|
|
if (dwJunk < sizeof (RIFF))
|
|
off += dwGran;
|
|
off += dwJunk;
|
|
}
|
|
}
|
|
|
|
if (mmioAscend(lpcs->hmmio, &ck, 0)){
|
|
dprintf("Failed to ascend at end of index writing");
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* AVIFileFini
|
|
*
|
|
* Write out the index, deallocate the index, and close the file.
|
|
*
|
|
*/
|
|
BOOL AVIFileFini (LPCAPSTREAM lpcs, BOOL fWroteJunkChunks, BOOL fAbort)
|
|
{
|
|
MMCKINFO ckRiff;
|
|
MMCKINFO ckList;
|
|
MMCKINFO ckStream;
|
|
MMCKINFO ck;
|
|
UINT ii;
|
|
DWORD dw;
|
|
AVIStreamHeader strhdr;
|
|
DWORD dwDataEnd;
|
|
BOOL fRet = TRUE;
|
|
RGBQUAD argbq[256];
|
|
MainAVIHeader aviHdr;
|
|
BOOL fSound;
|
|
LPBITMAPINFO lpBitsInfoOut; // Possibly compressed output format
|
|
|
|
// No special video format given -- use the default
|
|
//
|
|
lpBitsInfoOut = lpcs->lpBitsInfo;
|
|
#ifdef NEW_COMPMAN
|
|
if (lpcs->CompVars.hic != NULL)
|
|
lpBitsInfoOut = lpcs->CompVars.lpbiOut;
|
|
#endif
|
|
|
|
// if the capture file has not been opened, we have nothing to do
|
|
//
|
|
if (lpcs->hFile == 0)
|
|
return FALSE;
|
|
|
|
// save off the current seek position. this is the end of the capture
|
|
// data. then close the capture file, we will do the final work
|
|
// on the capture file using mmio & buffered io.
|
|
//
|
|
if (lpcs->pAsync)
|
|
dwDataEnd = lpcs->dwAsyncWriteOffset;
|
|
else
|
|
dwDataEnd = SetFilePointer (lpcs->hFile, 0, NULL, FILE_CURRENT);
|
|
|
|
CloseHandle (lpcs->hFile), lpcs->hFile = 0;
|
|
|
|
// if we had allocated space for async buffers, free them now
|
|
//
|
|
if (lpcs->pAsync)
|
|
{
|
|
GlobalFreePtr (lpcs->pAsync);
|
|
lpcs->pAsync = NULL;
|
|
lpcs->iNextAsync = lpcs->iLastAsync = lpcs->iNumAsync = 0;
|
|
}
|
|
|
|
// if we are aborting capture, we are done
|
|
lpcs->hmmio = mmioOpen(lpcs->achFile, NULL, MMIO_WRITE);
|
|
assert (lpcs->hmmio != NULL);
|
|
|
|
//
|
|
if (fAbort)
|
|
goto FileError;
|
|
|
|
if (!lpcs->dwWaveBytes)
|
|
fSound = FALSE;
|
|
else
|
|
fSound = lpcs->sCapParms.fCaptureAudio && (!(lpcs->fCaptureFlags & CAP_fFrameCapturingNow));
|
|
|
|
// Seek to beginning of file, so we can write the header.
|
|
mmioSeek(lpcs->hmmio, 0, SEEK_SET);
|
|
|
|
DSTATUS(lpcs, "Writing AVI header");
|
|
|
|
// Create RIFF/AVI chunk
|
|
ckRiff.cksize = 0;
|
|
ckRiff.fccType = formtypeAVI;
|
|
if (mmioCreateChunk(lpcs->hmmio,&ckRiff,MMIO_CREATERIFF))
|
|
goto FileError;
|
|
|
|
// Create header list
|
|
ckList.cksize = 0;
|
|
ckList.fccType = listtypeAVIHEADER;
|
|
if (mmioCreateChunk(lpcs->hmmio,&ckList,MMIO_CREATELIST))
|
|
goto FileError;
|
|
|
|
// Create AVI header chunk
|
|
ck.cksize = sizeof(MainAVIHeader);
|
|
ck.ckid = ckidAVIMAINHDR;
|
|
if (mmioCreateChunk(lpcs->hmmio,&ck,0))
|
|
goto FileError;
|
|
|
|
lpcs->dwAVIHdrPos = ck.dwDataOffset;
|
|
|
|
// Calculate AVI header info
|
|
//
|
|
ZeroMemory (&aviHdr, sizeof(aviHdr));
|
|
|
|
//
|
|
// Set the stream lengths based on the Master stream
|
|
//
|
|
#if 0 // stream length calc with unconditional audio master
|
|
aviHdr.dwMicroSecPerFrame = lpcs->sCapParms.dwRequestMicroSecPerFrame;
|
|
if (fSound && lpcs->dwVideoChunkCount) {
|
|
/* HACK HACK */
|
|
/* Set rate that was captured based on length of audio data */
|
|
|
|
aviHdr.dwMicroSecPerFrame = (DWORD) MulDiv ((LONG)lpcs->dwWaveBytes,
|
|
1000000,
|
|
(LONG)(lpcs->lpWaveFormat->nAvgBytesPerSec * lpcs->dwVideoChunkCount));
|
|
}
|
|
#else
|
|
|
|
// Init a value in case we're not capturing audio
|
|
aviHdr.dwMicroSecPerFrame = lpcs->sCapParms.dwRequestMicroSecPerFrame;
|
|
|
|
switch (lpcs->sCapParms.AVStreamMaster) {
|
|
case AVSTREAMMASTER_NONE:
|
|
break;
|
|
|
|
case AVSTREAMMASTER_AUDIO:
|
|
default:
|
|
// VFW 1.0 and 1.1 ALWAYS munged frame rate to match audio
|
|
// duration.
|
|
if (fSound && lpcs->sCapParms.fCaptureAudio && lpcs->dwVideoChunkCount) {
|
|
// Modify the video framerate based on audio duration
|
|
aviHdr.dwMicroSecPerFrame = (DWORD)
|
|
((double)lpcs->dwWaveBytes * 1000000. /
|
|
((double)lpcs->lpWaveFormat->nAvgBytesPerSec *
|
|
lpcs->dwVideoChunkCount + 0.5));
|
|
}
|
|
break;
|
|
}
|
|
#endif
|
|
lpcs->dwActualMicroSecPerFrame = aviHdr.dwMicroSecPerFrame;
|
|
|
|
aviHdr.dwMaxBytesPerSec = (DWORD) MulDiv (lpBitsInfoOut->bmiHeader.biSizeImage,
|
|
1000000,
|
|
lpcs->sCapParms.dwRequestMicroSecPerFrame) +
|
|
(fSound ? lpcs->lpWaveFormat->nAvgBytesPerSec : 0);
|
|
aviHdr.dwPaddingGranularity = 0L;
|
|
aviHdr.dwFlags = AVIF_WASCAPTUREFILE | AVIF_HASINDEX;
|
|
aviHdr.dwStreams = fSound ? 2 : 1;
|
|
aviHdr.dwTotalFrames = lpcs->dwVideoChunkCount;
|
|
aviHdr.dwInitialFrames = 0L;
|
|
aviHdr.dwSuggestedBufferSize = 0L;
|
|
aviHdr.dwWidth = lpBitsInfoOut->bmiHeader.biWidth;
|
|
aviHdr.dwHeight = lpBitsInfoOut->bmiHeader.biHeight;
|
|
|
|
#if 0 // unnecessary due to the ZeroMemory call above
|
|
aviHdr.dwReserved[0] = 0;
|
|
aviHdr.dwReserved[1] = 0;
|
|
aviHdr.dwReserved[2] = 0;
|
|
aviHdr.dwReserved[3] = 0;
|
|
#endif
|
|
//aviHdr.dwRate = 1000000L;
|
|
//aviHdr.dwScale = aviHdr.dwMicroSecPerFrame;
|
|
//aviHdr.dwStart = 0L;
|
|
//aviHdr.dwLength = lpcs->dwVideoChunkCount;
|
|
|
|
// Write AVI header info
|
|
if (mmioWrite(lpcs->hmmio, (LPBYTE)&aviHdr, sizeof(aviHdr)) != sizeof(aviHdr) ||
|
|
mmioAscend(lpcs->hmmio, &ck, 0))
|
|
goto FileError;
|
|
|
|
DSTATUS(lpcs, "Writing AVI Stream header");
|
|
|
|
// Create stream header list
|
|
ckStream.cksize = 0;
|
|
ckStream.fccType = listtypeSTREAMHEADER;
|
|
if (mmioCreateChunk(lpcs->hmmio,&ckStream,MMIO_CREATELIST))
|
|
goto FileError;
|
|
|
|
ZeroMemory (&strhdr, sizeof(strhdr));
|
|
strhdr.fccType = streamtypeVIDEO;
|
|
strhdr.fccHandler = lpBitsInfoOut->bmiHeader.biCompression;
|
|
#ifdef NEW_COMPMAN
|
|
if (lpcs->CompVars.hic)
|
|
strhdr.fccHandler = lpcs->CompVars.fccHandler;
|
|
#endif
|
|
|
|
// A bit of history...
|
|
// In VFW 1.0, we set fccHandler to 0 for BI_RLE8 formats
|
|
// as a kludge to make Mplayer and Videdit play the files.
|
|
// Just prior to 1.1 release, we found this broke Premiere,
|
|
// so now (after AVICAP beta is on Compuserve), we change the
|
|
// fccHandler to "MRLE". Just ask Todd...
|
|
// And now, at RC1, we change it again to "RLE ", Just ask Todd...
|
|
if (strhdr.fccHandler == BI_RLE8)
|
|
strhdr.fccHandler = mmioFOURCC('R', 'L', 'E', ' ');
|
|
|
|
//strhdr.dwFlags = 0L;
|
|
#ifdef NEW_COMPMAN
|
|
//strhdr.wPriority = 0L;
|
|
//strhdr.wLanguage = 0L;
|
|
#else
|
|
//strhdr.dwPriority = 0L;
|
|
#endif
|
|
|
|
//strhdr.dwInitialFrames = 0L;
|
|
strhdr.dwScale = aviHdr.dwMicroSecPerFrame;
|
|
strhdr.dwRate = 1000000L;
|
|
//strhdr.dwStart = 0L;
|
|
strhdr.dwLength = lpcs->dwVideoChunkCount; /* Needs to get filled in! */
|
|
strhdr.dwQuality = (DWORD) -1L; /* !!! ICQUALITY_DEFAULT */
|
|
//strhdr.dwSampleSize = 0L;
|
|
|
|
//
|
|
// Write stream header data
|
|
//
|
|
ck.ckid = ckidSTREAMHEADER;
|
|
if (mmioCreateChunk(lpcs->hmmio,&ck,0) ||
|
|
mmioWrite(lpcs->hmmio, (LPBYTE)&strhdr, sizeof(strhdr)) != sizeof(strhdr) ||
|
|
mmioAscend(lpcs->hmmio, &ck, 0))
|
|
goto FileError;
|
|
|
|
/*
|
|
** !!! dont write palette for full color?
|
|
*/
|
|
if (lpBitsInfoOut->bmiHeader.biBitCount > 8)
|
|
lpBitsInfoOut->bmiHeader.biClrUsed = 0;
|
|
|
|
/* Create DIB header chunk */
|
|
ck.cksize = lpBitsInfoOut->bmiHeader.biSize +
|
|
lpBitsInfoOut->bmiHeader.biClrUsed *
|
|
sizeof(RGBQUAD);
|
|
ck.ckid = ckidSTREAMFORMAT;
|
|
if (mmioCreateChunk(lpcs->hmmio,&ck,0))
|
|
goto FileError;
|
|
|
|
/* Write DIB header data */
|
|
if (mmioWrite(lpcs->hmmio, (LPBYTE)&lpBitsInfoOut->bmiHeader,
|
|
lpBitsInfoOut->bmiHeader.biSize) !=
|
|
(LONG) lpBitsInfoOut->bmiHeader.biSize)
|
|
goto FileError;
|
|
|
|
if (lpBitsInfoOut->bmiHeader.biClrUsed > 0) {
|
|
// Get Palette info
|
|
if ((ii = GetPaletteEntries(lpcs->hPalCurrent, 0,
|
|
(UINT) lpBitsInfoOut->bmiHeader.biClrUsed,
|
|
(LPPALETTEENTRY) argbq)) !=
|
|
(UINT)lpBitsInfoOut->bmiHeader.biClrUsed)
|
|
goto FileError;
|
|
|
|
// Reorder the palette from PALETTEENTRY order to RGBQUAD order
|
|
// by swapping the red and blue palette entries.
|
|
//for (ii = 0; ii < lpBitsInfoOut->bmiHeader.biClrUsed; ++ii)
|
|
while (ii--)
|
|
SWAPTYPE(argbq[ii].rgbRed, argbq[ii].rgbBlue, BYTE);
|
|
|
|
|
|
// Write Palette Info
|
|
dw = sizeof(RGBQUAD) * lpBitsInfoOut->bmiHeader.biClrUsed;
|
|
if (mmioWrite(lpcs->hmmio, (LPBYTE)argbq, dw) != (long)dw)
|
|
goto FileError;
|
|
}
|
|
|
|
if (mmioAscend(lpcs->hmmio, &ck, 0))
|
|
goto FileError;
|
|
|
|
// ADD FOURCC stuff here!!! for Video stream
|
|
|
|
// Ascend out of stream header
|
|
if (mmioAscend(lpcs->hmmio, &ckStream, 0))
|
|
goto FileError;
|
|
|
|
/* If sound is enabled, then write WAVE header */
|
|
if (fSound) {
|
|
|
|
/* Create stream header list */
|
|
ckStream.cksize = 0;
|
|
ckStream.fccType = listtypeSTREAMHEADER;
|
|
if (mmioCreateChunk(lpcs->hmmio,&ckStream,MMIO_CREATELIST))
|
|
goto FileError;
|
|
|
|
ZeroMemory (&strhdr, sizeof(strhdr));
|
|
strhdr.fccType = streamtypeAUDIO;
|
|
strhdr.fccHandler = 0L;
|
|
strhdr.dwFlags = 0L;
|
|
#ifdef NEW_COMPMAN
|
|
strhdr.wPriority = 0L;
|
|
strhdr.wLanguage = 0L;
|
|
#else
|
|
strhdr.dwPriority = 0L;
|
|
#endif
|
|
strhdr.dwInitialFrames = 0L;
|
|
strhdr.dwScale = lpcs->lpWaveFormat->nBlockAlign;
|
|
strhdr.dwRate = lpcs->lpWaveFormat->nAvgBytesPerSec;
|
|
strhdr.dwStart = 0L;
|
|
strhdr.dwLength = lpcs->dwWaveBytes /
|
|
lpcs->lpWaveFormat->nBlockAlign;
|
|
strhdr.dwQuality = (DWORD)-1L; /* !!! ICQUALITY_DEFAULT */
|
|
strhdr.dwSampleSize = lpcs->lpWaveFormat->nBlockAlign;
|
|
|
|
ck.ckid = ckidSTREAMHEADER;
|
|
if (mmioCreateChunk(lpcs->hmmio,&ck,0) ||
|
|
mmioWrite(lpcs->hmmio, (LPBYTE)&strhdr, sizeof(strhdr)) != sizeof(strhdr) ||
|
|
mmioAscend(lpcs->hmmio, &ck, 0))
|
|
goto FileError;
|
|
|
|
ck.cksize = (LONG) GetSizeOfWaveFormat ((LPWAVEFORMATEX) lpcs->lpWaveFormat);
|
|
ck.ckid = ckidSTREAMFORMAT;
|
|
if (mmioCreateChunk(lpcs->hmmio,&ck,0) ||
|
|
mmioWrite(lpcs->hmmio, (LPBYTE)lpcs->lpWaveFormat, ck.cksize) != (LONG) ck.cksize ||
|
|
mmioAscend(lpcs->hmmio, &ck, 0))
|
|
goto FileError;
|
|
|
|
/* Ascend out of stream header */
|
|
if (mmioAscend(lpcs->hmmio, &ckStream, 0))
|
|
goto FileError;
|
|
}
|
|
|
|
// ADD FOURCC stuff here!!! for entire file
|
|
DSTATUS(lpcs, "Writing Info chunks");
|
|
if (lpcs->lpInfoChunks) {
|
|
DSTATUS(lpcs, "Writing Info chunks");
|
|
if (mmioWrite (lpcs->hmmio, lpcs->lpInfoChunks, lpcs->cbInfoChunks) !=
|
|
lpcs->cbInfoChunks)
|
|
goto FileError;
|
|
}
|
|
|
|
/* ascend from the Header list */
|
|
if (mmioAscend(lpcs->hmmio, &ckList, 0))
|
|
goto FileError;
|
|
|
|
|
|
ck.ckid = ckidAVIPADDING;
|
|
if (mmioCreateChunk(lpcs->hmmio,&ck,0))
|
|
goto FileError;
|
|
|
|
// The data must begin at offset lpcs->dwAVIHdrSize.
|
|
// To create a valid RIFF file we must write the LIST/AVI chunk before
|
|
// this point. Hence we end the junk section at the end of the header
|
|
// leaving room for the LIST chunk header.
|
|
mmioSeek(lpcs->hmmio, lpcs->dwAVIHdrSize - 3 * sizeof(DWORD), SEEK_SET);
|
|
|
|
if (mmioAscend(lpcs->hmmio, &ck, 0))
|
|
goto FileError;
|
|
|
|
DSTATUS(lpcs, "Writing Movie LIST");
|
|
|
|
/* Start the movi list */
|
|
ckList.cksize = 0;
|
|
ckList.fccType = listtypeAVIMOVIE;
|
|
if (mmioCreateChunk(lpcs->hmmio,&ckList,MMIO_CREATELIST))
|
|
goto FileError;
|
|
|
|
// Force the chunk to end on the next word boundary
|
|
dprintf("IndexStartOffset = %8X\n", dwDataEnd);
|
|
mmioSeek(lpcs->hmmio, dwDataEnd + (dwDataEnd & 1L), SEEK_SET);
|
|
|
|
/* Ascend out of the movi list and the RIFF chunk so that */
|
|
/* the sizes can be fixed */
|
|
mmioAscend(lpcs->hmmio, &ckList, 0);
|
|
|
|
/*
|
|
** Now write index out!
|
|
*/
|
|
DSTATUS(lpcs, "Writing Index...");
|
|
WriteIndex(lpcs, fWroteJunkChunks);
|
|
|
|
lpcs->fFileCaptured = TRUE; // we got a good file, allow editing of it
|
|
goto Success;
|
|
|
|
FileError:
|
|
lpcs->fFileCaptured = fRet = FALSE; // bogus file - no editing allowed
|
|
|
|
Success:
|
|
DSTATUS(lpcs, "Freeing Index...");
|
|
FiniIndex (lpcs);
|
|
mmioAscend(lpcs->hmmio, &ckRiff, 0);
|
|
|
|
mmioSeek(lpcs->hmmio, 0, SEEK_END);
|
|
|
|
mmioFlush(lpcs->hmmio, 0);
|
|
|
|
// Close the file
|
|
mmioClose(lpcs->hmmio, 0);
|
|
lpcs->hmmio = NULL;
|
|
|
|
return fRet;
|
|
}
|
|
|
|
//
|
|
// Prepends dummy frame entries to the current valid video frame.
|
|
// Bumps the index, but does not actually trigger a write operation.
|
|
// nCount is a count of the number of frames to write
|
|
// Returns: TRUE on a successful write
|
|
|
|
BOOL WINAPI AVIWriteDummyFrames (
|
|
LPCAPSTREAM lpcs,
|
|
UINT nCount,
|
|
LPUINT lpuError,
|
|
LPBOOL lpbPending)
|
|
{
|
|
DWORD dwBytesToWrite;
|
|
DWORD dwType;
|
|
LPRIFF priff;
|
|
UINT jj;
|
|
|
|
*lpbPending = FALSE;
|
|
*lpuError = 0;
|
|
if ( ! nCount)
|
|
return TRUE;
|
|
|
|
// create a buffer full of dummy chunks to act as placeholders
|
|
// for the dropped frames
|
|
//
|
|
dwType = MAKEAVICKID(cktypeDIBbits, 0);
|
|
if (lpcs->lpBitsInfo->bmiHeader.biCompression == BI_RLE8)
|
|
dwType = MAKEAVICKID(cktypeDIBcompressed, 0);
|
|
|
|
// dont try to write more than 1 'sector' worth of dummy
|
|
// frames
|
|
//
|
|
dwBytesToWrite = nCount * sizeof(RIFF);
|
|
if (dwBytesToWrite > lpcs->dwBytesPerSector)
|
|
{
|
|
#ifdef DEBUG
|
|
UINT n = nCount;
|
|
#endif
|
|
dwBytesToWrite = lpcs->dwBytesPerSector;
|
|
#ifdef DEBUG
|
|
nCount = dwBytesToWrite / sizeof(RIFF);
|
|
assert(nCount*sizeof(RIFF) == dwBytesToWrite);
|
|
dprintf("Forced to reduce dummy frames from %d to %d", n, nCount);
|
|
#endif
|
|
}
|
|
|
|
// create index entries for the dummy chunks
|
|
//
|
|
for (jj = 0; jj < nCount-1; ++jj)
|
|
IndexVideo (lpcs, IS_DUMMY_CHUNK, FALSE);
|
|
IndexVideo (lpcs, IS_DUMMY_CHUNK | IS_GRANULAR_CHUNK, FALSE);
|
|
|
|
// fill in the drop frame buffer with dummy frames
|
|
//
|
|
priff = (LPRIFF)lpcs->lpDropFrame;
|
|
for (jj = 0; jj < nCount; ++jj, ++priff)
|
|
{
|
|
priff->dwSize = 0;
|
|
priff->dwType = dwType;
|
|
}
|
|
|
|
//
|
|
// cant use a single dummy frame buffer when we are doing async
|
|
// write because we cant write 'n' dummy frames to the buffer
|
|
// if it is currently already queued to an IO.
|
|
//
|
|
// perhaps several dummy frames? 1 frame, 2 frames, 3 frames, etc
|
|
// create dynamically?
|
|
//
|
|
|
|
// write out the dummy frames
|
|
//
|
|
AuxDebugEx (3, DEBUGLINE "DummyFrames Count=%d, ToWrite=%d\r\n",
|
|
nCount, dwBytesToWrite);
|
|
|
|
*lpuError = AVIWrite (lpcs,
|
|
lpcs->lpDropFrame,
|
|
dwBytesToWrite,
|
|
(UINT)-1, // force sync completion
|
|
ASYNC_BUF_DROP,
|
|
lpbPending);
|
|
return !(*lpuError);
|
|
}
|
|
|
|
// Writes compressed or uncompressed frames to the AVI file
|
|
// returns TRUE if no error, FALSE if end of file.
|
|
//
|
|
BOOL WINAPI AVIWriteVideoFrame (
|
|
LPCAPSTREAM lpcs,
|
|
LPBYTE lpData,
|
|
DWORD dwBytesUsed,
|
|
BOOL fKeyFrame,
|
|
UINT uIndex,
|
|
UINT nDropped,
|
|
LPUINT lpuError,
|
|
LPBOOL lpbPending)
|
|
{
|
|
DWORD dwBytesToWrite;
|
|
LPRIFF priff;
|
|
|
|
*lpuError = 0;
|
|
*lpbPending = FALSE;
|
|
if (!IndexVideo (lpcs,
|
|
dwBytesUsed | (nDropped ? 0 : IS_GRANULAR_CHUNK),
|
|
fKeyFrame))
|
|
return FALSE;
|
|
|
|
// adjust the size field of the RIFF chunk that preceeds the
|
|
// data to be written
|
|
//
|
|
priff = ((LPRIFF)lpData)-1;
|
|
priff->dwSize = dwBytesUsed;
|
|
dwBytesUsed += dwBytesUsed & 1;
|
|
dwBytesToWrite = dwBytesUsed + sizeof(RIFF);
|
|
|
|
if (nDropped)
|
|
{
|
|
UINT jj;
|
|
DWORD dwType;
|
|
|
|
// determine the 'type' of the dummy chunks
|
|
//
|
|
dwType = MAKEAVICKID(cktypeDIBbits, 0);
|
|
if (lpcs->lpBitsInfo->bmiHeader.biCompression == BI_RLE8)
|
|
dwType = MAKEAVICKID(cktypeDIBcompressed, 0);
|
|
|
|
// dont try to write more than 1 'sector' worth of dummy
|
|
// frames
|
|
//
|
|
if (nDropped > (lpcs->dwBytesPerSector / sizeof(RIFF)))
|
|
nDropped = lpcs->dwBytesPerSector / sizeof(RIFF);
|
|
|
|
// create index entries for the dummy chunks
|
|
//
|
|
for (jj = 0; jj < nDropped-1; ++jj)
|
|
IndexVideo (lpcs, IS_DUMMY_CHUNK, FALSE);
|
|
|
|
IndexVideo (lpcs, IS_DUMMY_CHUNK | IS_GRANULAR_CHUNK, FALSE);
|
|
|
|
// fill in the drop frame buffer with dummy frames
|
|
//
|
|
priff = (LPRIFF)(lpData + dwBytesToWrite - sizeof(RIFF));
|
|
for (jj = 0; jj < nDropped; ++jj, ++priff)
|
|
{
|
|
priff->dwSize = 0;
|
|
priff->dwType = dwType;
|
|
}
|
|
dwBytesToWrite += nDropped * sizeof(RIFF);
|
|
}
|
|
|
|
// AviWrite will write the data and create any trailing junk
|
|
// that is necessary
|
|
//
|
|
|
|
// write out the chunk, video data, and possibly the junk chunk
|
|
//
|
|
AuxDebugEx (3, DEBUGLINE "Calling AVIWrite - Video=%8x dw=%8x\r\n",
|
|
(LPBYTE)lpData - sizeof(RIFF), dwBytesToWrite);
|
|
|
|
*lpuError = AVIWrite (lpcs,
|
|
(LPBYTE)lpData - sizeof(RIFF),
|
|
dwBytesToWrite,
|
|
uIndex,
|
|
ASYNC_BUF_VIDEO,
|
|
lpbPending);
|
|
return !(*lpuError);
|
|
}
|
|
|
|
// New for Chicago, align audio buffers on wChunkGranularity boundaries!
|
|
//
|
|
BOOL WINAPI AVIWriteAudio (
|
|
LPCAPSTREAM lpcs,
|
|
LPWAVEHDR lpwh,
|
|
UINT uIndex,
|
|
LPUINT lpuError,
|
|
LPBOOL lpbPending)
|
|
{
|
|
DWORD dwBytesToWrite;
|
|
LPRIFF priff;
|
|
|
|
*lpuError = 0;
|
|
*lpbPending = FALSE;
|
|
|
|
// change the dwSize field in the RIFF chunk
|
|
priff = ((LPRIFF)lpwh->lpData) -1;
|
|
priff->dwSize = lpwh->dwBytesRecorded;
|
|
|
|
if ( ! IndexAudio (lpcs, lpwh->dwBytesRecorded | IS_GRANULAR_CHUNK))
|
|
return FALSE;
|
|
|
|
// update total bytes of wave audio recorded
|
|
//
|
|
lpcs->dwWaveBytes += lpwh->dwBytesRecorded;
|
|
|
|
// pad the data to be written to a WORD (16 bit) boundary
|
|
//
|
|
lpwh->dwBytesRecorded += lpwh->dwBytesRecorded & 1;
|
|
dwBytesToWrite = lpwh->dwBytesRecorded + sizeof(RIFF);
|
|
|
|
// write out the chunk, audio data, and possibly the junk chunk
|
|
AuxDebugEx (3, DEBUGLINE "Audio=%8x dw=%8x\r\n",
|
|
lpwh->lpData - sizeof(RIFF), dwBytesToWrite);
|
|
*lpuError = AVIWrite (lpcs,
|
|
lpwh->lpData - sizeof(RIFF),
|
|
dwBytesToWrite,
|
|
uIndex,
|
|
ASYNC_BUF_AUDIO,
|
|
lpbPending);
|
|
return !(*lpuError);
|
|
}
|
|
#endif //---------------- USE_AVIFILE ----------------------------
|