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windows-nt/Source/XPSP1/NT/multimedia/media/avi/mciavi32/aviopen.c

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2020-09-26 03:20:57 -05:00
/******************************************************************************
Copyright (C) Microsoft Corporation 1985-1991. All rights reserved.
Title: aviopen.c - open a AVI file
*****************************************************************************/
#include "graphic.h"
#ifdef _WIN32
#include <wchar.h>
#endif
#ifdef USEAVIFILE
#include <initguid.h>
#include <scode.h>
DEFINE_AVIGUID(IID_IAVIFile, 0x00020020, 0, 0);
DEFINE_AVIGUID(IID_IAVIStream, 0x00020021, 0, 0);
#endif
#define comptypeNONE mmioFOURCC('N','O','N','E')
//
// special error to force using AVIFile to try and open this file.
//
#define AVIERR_NOT_AVIFILE 4242
//
// if this is defined we will always use AVIFILE.DLL, except for
// 1:1 interleaved files.
//
#ifdef USEAVIFILE
#define USE_AVIFILE_FOR_NON_INT
#endif
#ifdef _WIN32
BOOL runningInWow = 0; // Assume we are not in WOW
#endif
/***************************************************************************
* Local function declarations
***************************************************************************/
STATICFN BOOL NEAR PASCAL InitStream(NPMCIGRAPHIC npMCI, STREAMINFO *psi);
STATICFN BOOL NEAR PASCAL InitVideoStream(NPMCIGRAPHIC npMCI, STREAMINFO *psi);
STATICFN BOOL NEAR PASCAL InitAudioStream(NPMCIGRAPHIC npMCI, STREAMINFO *psi);
STATICFN BOOL NEAR PASCAL InitOtherStream(NPMCIGRAPHIC npMCI, STREAMINFO *psi);
STATICFN void NEAR PASCAL CloseStream(NPMCIGRAPHIC npMCI, STREAMINFO *psi);
STATICFN BOOL NEAR PASCAL ParseNewHeader(NPMCIGRAPHIC npMCI);
STATICFN BOOL NEAR PASCAL OpenRiffAVIFile(NPMCIGRAPHIC npMCI, BOOL bForce);
STATICFN BOOL NEAR PASCAL OpenWithAVIFile(NPMCIGRAPHIC npMCI);
STATICFN BOOL NEAR PASCAL OpenInterface(NPMCIGRAPHIC npMCI);
#ifdef USEAVIFILE
STATICFN BOOL NEAR PASCAL OpenAVIFile(NPMCIGRAPHIC npMCI, IAVIFile FAR *pf);
STATICFN BOOL NEAR PASCAL OpenAVIStream(NPMCIGRAPHIC npMCI, int stream, IAVIStream FAR *pf);
#endif
INLINE static BOOL NEAR PASCAL IsRectBogus(RECT *prc);
#ifndef _WIN32
static LONG NEAR PASCAL atol(char *sz);
#endif // !_WIN32
#ifdef _WIN32XXXX
#define GetFileDriveType GetDriveType
#else
static UINT NEAR PASCAL GetFileDriveType(LPTSTR szPath);
#endif
#ifndef _WIN32
SZCODE szOLENLSDLL[] = "OLE2NLS.DLL";
SZCODE szOLENLSAPI[] = "GetUserDefaultLangID";
#endif
//
// due to OLE, all ole calls must be single-threaded and thus on
// the app thread. so we moved the Open call to the app thread
//
// -- called on app thread -------------------------------------------------
//
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | mciaviOpenFile | Open an AVI file.
* the filename we are to open is passed to npMCI->szFileName.
*
* @parm NPMCIGRAPHIC | npMCI | Pointer to instance data.
*
* @rdesc TRUE means OK, otherwise mci error in dwTaskError
*
***************************************************************************/
BOOL FAR PASCAL mciaviOpenFile(NPMCIGRAPHIC npMCI)
{
//
// mciaviOpenFile should not be called with a file open!
//
DPF(("mciaviOpenFile, name = >>%ls<<\n", npMCI->szFilename));
Assert(npMCI->streams == 0);
Assert(npMCI->hmmio == NULL);
Assert(npMCI->hpIndex == NULL);
Assert(!(npMCI->dwFlags & (
MCIAVI_NOTINTERLEAVED |
MCIAVI_ANIMATEPALETTE |
MCIAVI_CANDRAW |
MCIAVI_HASINDEX)));
//
// !!!support open new
//
if (npMCI->szFilename[0] == '\0') {
}
//
// what media is this file coming from, will be important later
// when we play.
//
if (npMCI->szFilename[0] == TEXT('@')) {
npMCI->uDriveType = DRIVE_INTERFACE;
if (IsNTWOW()) {
DPF2(("Rejecting open from WOW because of an interface pointer\n"));
npMCI->dwTaskError=MCIERR_UNSUPPORTED_FUNCTION;
return(FALSE);
// Cannot support a 16 bit interface pointer from 32 bit code
}
}
else
npMCI->uDriveType = GetFileDriveType(npMCI->szFilename);
#ifdef DEBUG
switch (npMCI->uDriveType) {
case DRIVE_CDROM:
DOUT2("Media is a CD-ROM\n");
break;
case DRIVE_REMOTE:
DOUT2("Media is a Network\n");
break;
case DRIVE_FIXED:
DOUT2("Media is a Hard disk\n");
break;
case DRIVE_REMOVABLE:
DOUT2("Media is a floppy disk\n");
break;
case DRIVE_INTERFACE:
DOUT2("Media is OLE COM Interface\n");
break;
default:
DPF(("Unknown Media type %d\n", npMCI->uDriveType));
break;
}
#endif
#ifdef USEAVIFILE
//
// if the "filename" is of the form: '@########' then we assume we
// have been pased a interface pointer of some sort.
//
if (npMCI->szFilename[0] == TEXT('@') &&
OpenInterface(npMCI))
goto DoneOpening;
// !!! This will open even AVI files this way!
if ((npMCI->dwOptionFlags & MCIAVIO_USEAVIFILE) &&
OpenWithAVIFile(npMCI))
goto DoneOpening;
#endif
if (!OpenRiffAVIFile(npMCI, FALSE)) {
#ifdef USEAVIFILE
//
// unable to open RIFF file, if it was because it was
// not a AVI file, then give AVIFile a try.
//
if (npMCI->dwTaskError == AVIERR_NOT_AVIFILE) {
npMCI->dwTaskError = 0;
if (OpenWithAVIFile(npMCI))
goto DoneOpening;
// if this is a riff file that we could open but chose
// to pass to avifile, and avifile is not present, then we need
// to pass it back to OpenRiffAVIFile and force it to try
// and open it properly.
npMCI->dwTaskError = 0;
if (OpenRiffAVIFile(npMCI, TRUE))
goto DoneOpening;
if (npMCI->dwTaskError == AVIERR_NOT_AVIFILE) {
npMCI->dwTaskError = MCIERR_INVALID_FILE;
// We cannot return an AVI specific error as there is
// no way for the UI to get access to the error text.
// Hence we use a generic mci error.
}
}
#endif
goto error;
}
DoneOpening:
npMCI->dwTaskError = 0;
return TRUE;
error:
mciaviCloseFile(npMCI);
if (npMCI->dwTaskError == 0)
npMCI->dwTaskError = MCIERR_INVALID_FILE;
return FALSE;
}
#ifdef USEAVIFILE
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | OpenWithAVIFile | Open an file using AVIFile
*
* @parm NPMCIGRAPHIC | npMCI | Pointer to instance data.
*
* @rdesc TRUE means OK, otherwise mci error in dwTaskError
*
***************************************************************************/
STATICFN BOOL NEAR PASCAL OpenWithAVIFile(NPMCIGRAPHIC npMCI)
{
IAVIFile FAR *pf = NULL;
if (!InitAVIFile(npMCI))
return FALSE;
AVIFileOpen(&pf, npMCI->szFilename, MMIO_READ, 0);
if (pf == NULL) {
npMCI->dwTaskError = MCIERR_INVALID_FILE;
return FALSE;
}
if (!OpenAVIFile(npMCI, pf)) {
mciaviCloseFile(npMCI);
pf->lpVtbl->Release(pf);
return FALSE;
}
return TRUE;
}
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | OpenInterface | Open an interface pointer
*
* @parm NPMCIGRAPHIC | npMCI | Pointer to instance data.
*
* @rdesc TRUE means OK, otherwise mci error in dwTaskError
*
***************************************************************************/
STATICFN BOOL NEAR PASCAL OpenInterface(NPMCIGRAPHIC npMCI)
{
IUnknown FAR *p;
IAVIFile FAR *pf=NULL;
IAVIStream FAR *ps=NULL;
if (!InitAVIFile(npMCI))
return FALSE;
if (npMCI->szFilename[0] != TEXT('@')) {
DPF1(("Failing to open interface for file %ls\n",npMCI->szFilename));
return FALSE;
}
#ifdef UNICODE
p = (IUnknown FAR *)wcstol(npMCI->szFilename+1, NULL, 10);
#else
p = (IUnknown FAR *)atol(npMCI->szFilename+1);
#endif
#ifdef USE_ISVALIDINTERFACE
if (!IsValidInterface(p))
return FALSE;
#endif
#ifndef _WIN32
//!!!we need to do the PSP stuff? or will the TASK stuff in
//!!!COMPOBJ mess us up?
{
extern void FAR SetPSP(UINT psp);
SetPSP(npMCI->pspParent);
}
#endif
p->lpVtbl->QueryInterface(p, &IID_IAVIFile, (LPVOID FAR *)&pf);
if (pf != NULL)
{
if (OpenAVIFile(npMCI, pf))
return TRUE;
pf->lpVtbl->Release(pf);
pf = NULL; // AVIMakeFileFromStreams need not set pf to NULL
}
p->lpVtbl->QueryInterface(p, &IID_IAVIStream, (LPVOID FAR *)&ps);
if (ps != NULL)
{
AVIMakeFileFromStreams(&pf, 1, &ps);
ps->lpVtbl->Release(ps);
if (pf == NULL)
return FALSE;
if (OpenAVIFile(npMCI, pf))
return TRUE;
pf->lpVtbl->Release(pf);
//return FALSE;
}
return FALSE;
}
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | OpenAVIFile | Open an a AVIFile object
*
* NOTE we do not do call AddRef() we assume we dont need to.
* neither do we Release(). If we fail, our caller will Release(),
*
* @parm NPMCIGRAPHIC | npMCI | Pointer to instance data.
*
* @rdesc TRUE means OK, otherwise mci error in dwTaskError
* On a successful return npMCI->pf will be loaded with the
* input IAVIFILE interface pointer.
*
***************************************************************************/
STATICFN BOOL NEAR PASCAL OpenAVIFile(NPMCIGRAPHIC npMCI, IAVIFile FAR *pf)
{
AVIFILEINFOW info;
HRESULT hr;
IAVIStream FAR *ps;
STREAMINFO *psi;
int i;
Assert(npMCI->pf == NULL);
_fmemset(&info, 0, sizeof(info));
hr = pf->lpVtbl->Info(pf, &info, sizeof(info));
if (FAILED(GetScode(hr))) {
npMCI->dwTaskError = MCIERR_INVALID_FILE;
return FALSE;
}
DPF1(("OpenAVIFile: %ls\n\t#Streams=%d, Width=%d Height=%d\n",
info.szFileType, info.dwStreams, info.dwWidth, info.dwHeight));
//
// get rid of bad files
//
if (info.dwStreams == 0 || info.dwStreams > 255 || info.dwLength == 0) {
npMCI->dwTaskError = MCIERR_INVALID_FILE;
return FALSE;
}
//
// save the interface pointer
// make a copy of the VTable, for later use
//
npMCI->pf = pf;
////npMCI->vt = *pf->lpVtbl;
npMCI->dwFlags |= MCIAVI_HASINDEX;
npMCI->dwMicroSecPerFrame = muldiv32(info.dwScale, 1000000, info.dwRate);
npMCI->lFrames = (LONG)info.dwLength;
npMCI->dwRate = info.dwRate;
npMCI->dwScale = info.dwScale;
npMCI->streams = (int)info.dwStreams;
npMCI->dwBytesPerSec = info.dwMaxBytesPerSec;
npMCI->dwSuggestedBufferSize = info.dwSuggestedBufferSize + 2*sizeof(DWORD);
SetRect(&npMCI->rcMovie,0,0,(int)info.dwWidth,(int)info.dwHeight);
npMCI->paStreamInfo = (STREAMINFO*)
LocalAlloc(LPTR,npMCI->streams * sizeof(STREAMINFO));
if (npMCI->paStreamInfo == NULL) {
npMCI->dwTaskError = MCIERR_OUT_OF_MEMORY;
npMCI->pf = NULL;
return FALSE;
}
for (i = 0; i < npMCI->streams; i++) {
ps = NULL;
AVIFileGetStream(pf, &ps, 0, i);
if (ps == NULL) {
npMCI->dwTaskError = MCIERR_INVALID_FILE;
npMCI->pf = NULL;
return FALSE;
}
if (!OpenAVIStream(npMCI, i, ps))
DPF(("Error opening stream %d!\n", i));
if (npMCI->dwTaskError) {
npMCI->pf = NULL;
ps->lpVtbl->Release(ps);
return FALSE;
}
}
//
// compute the key frames every value
//
// do this by finding the key frame average over the first few frames.
//
#define NFRAMES 250
if (psi = npMCI->psiVideo) {
LONG l;
int nKeyFrames=0;
int nFrames = (int) min(npMCI->lFrames, NFRAMES);
for (l=0; l<nFrames; l++) {
if (AVIStreamFindSample(psi->ps, psi->sh.dwStart+l, FIND_PREV|FIND_KEY) == l)
nKeyFrames++;
}
if (nKeyFrames > 1)
npMCI->dwKeyFrameInfo = (DWORD)((nFrames + nKeyFrames/2)/nKeyFrames);
else
npMCI->dwKeyFrameInfo = 0;
}
return TRUE;
}
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | OpenAVIStream | Open an a AVIStream object
*
* @parm NPMCIGRAPHIC | npMCI | Pointer to instance data.
*
* @rdesc TRUE means OK, otherwise mci error in dwTaskError
*
***************************************************************************/
STATICFN BOOL NEAR PASCAL OpenAVIStream(NPMCIGRAPHIC npMCI, int stream, IAVIStream FAR *ps)
{
STREAMINFO* psi;
AVISTREAMINFOW info;
HRESULT hr;
_fmemset(&info, 0, sizeof(info));
hr = ps->lpVtbl->Info(ps, &info, sizeof(info));
if (FAILED(GetScode(hr))) {
npMCI->dwTaskError = MCIERR_INVALID_FILE;
return FALSE;
}
DPF(("OpenAVIStream(%d) %4.4hs:%4.4hs %ls\n", stream, (LPSTR)&info.fccType, (LPSTR)&info.fccHandler, info.szName));
//
// init the STREAMINFO from the IAVIStream
//
psi = SI(stream);
psi->ps = ps; // save interface
////psi->vt = *ps->lpVtbl; // save VTable !!!needed?
psi->sh.fccType = info.fccType;
psi->sh.fccHandler = info.fccHandler;
psi->sh.dwFlags = info.dwFlags;
psi->sh.wPriority = info.wPriority;
psi->sh.wLanguage = info.wLanguage;
psi->sh.dwInitialFrames = 0; // info.dwInitialFrames;
psi->sh.dwScale = info.dwScale;
psi->sh.dwRate = info.dwRate;
psi->sh.dwStart = info.dwStart;
psi->sh.dwLength = info.dwLength;
psi->sh.dwSuggestedBufferSize = info.dwSuggestedBufferSize;
psi->sh.dwQuality = info.dwQuality;
psi->sh.dwSampleSize = info.dwSampleSize;
psi->sh.rcFrame = info.rcFrame;
//
// get the format of the stream.
//
AVIStreamFormatSize(ps, 0, &psi->cbFormat);
psi->lpFormat = GlobalAllocPtr(GMEM_MOVEABLE, psi->cbFormat);
if (!psi->lpFormat) {
npMCI->dwTaskError = MCIERR_OUT_OF_MEMORY;
return FALSE;
}
AVIStreamReadFormat(psi->ps, 0, psi->lpFormat, &psi->cbFormat);
//
// get the extra data for the stream.
//
AVIStreamReadData(psi->ps,ckidSTREAMHANDLERDATA, NULL, &psi->cbData);
if (psi->cbData > 0) {
psi->lpData = GlobalAllocPtr(GMEM_MOVEABLE, psi->cbData);
if (!psi->lpData) {
npMCI->dwTaskError = MCIERR_OUT_OF_MEMORY;
return FALSE;
}
AVIStreamReadData(psi->ps, ckidSTREAMHANDLERDATA, NULL, &psi->cbData);
}
return InitStream(npMCI, psi);
}
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | InitAVIFile | called to RTL to AVIFILE.DLL
*
* @rdesc TRUE means OK, otherwise error
*
***************************************************************************/
#ifdef _WIN32
SZCODE szAVIFILE[] = TEXT("AVIFIL32.DLL");
#ifdef USE_ISVALIDINTERFACE
SZCODE szCOMPOBJ[] = TEXT("COMPOB32");
#endif
#else
SZCODE szAVIFILE[] = "AVIFILE.DLL";
#ifdef USE_ISVALIDINTERFACE
SZCODE szCOMPOBJ[] = "COMPOBJ";
#endif
#endif
// On NT the entry points will NOT be unicode strings, as there is
// no unicode version of GetProcAddress. BUT SZCODE generate UNICODE...
// on the other hand, the entry points will all be unicode entrypoints 'W'
#ifdef UNICODE
#define UNICODE_APPEND "W"
#else
#define UNICODE_APPEND
#endif
SZCODEA szAVIFileInit[] = "AVIFileInit";
SZCODEA szAVIFileExit[] = "AVIFileExit";
#ifdef USE_ISVALIDINTERFACE
SZCODEA szIsValidInterface[] = "IsValidInterface";
#endif
SZCODEA szAVIMakeFileFromStreams[] = "AVIMakeFileFromStreams";
SZCODEA szAVIStreamBeginStreaming[] = "AVIStreamBeginStreaming";
SZCODEA szAVIStreamEndStreaming[] = "AVIStreamEndStreaming";
SZCODEA szAVIFileOpen[] = "AVIFileOpen" UNICODE_APPEND;
BOOL FAR InitAVIFile(NPMCIGRAPHIC npMCI)
{
UINT u;
if (hdllAVIFILE == (HMODULE)-1)
// We have already tried to load AVIFILE and failed
return FALSE;
if (hdllAVIFILE == NULL) {
u = SetErrorMode(SEM_NOOPENFILEERRORBOX);
#ifdef _WIN32
// The load and free of szAVIFILE is safe as it is protected by
// the npMCI device critical section. This means that open/close
// events will be synchronised.
#endif
hdllAVIFILE = LoadLibrary(szAVIFILE);
SetErrorMode(u);
#ifndef _WIN32
if ((UINT)hdllAVIFILE <= (UINT)HINSTANCE_ERROR)
hdllAVIFILE = NULL;
#endif
if (hdllAVIFILE == NULL) {
hdllAVIFILE = (HMODULE)-1;
DPF(("Failed to load AVIFILE dll - error %d\n", GetLastError()));
return FALSE;
}
#ifdef USE_ISVALIDINTERFACE
hdllCOMPOBJ = GetModuleHandle(szCOMPOBJ);
Assert(hdllCOMPOBJ != NULL);
(FARPROC)XIsValidInterface = GetProcAddress(hdllCOMPOBJ, szIsValidInterface);
Assert(XIsValidInterface != NULL);
#endif
(FARPROC)XAVIFileInit = GetProcAddress(hdllAVIFILE, szAVIFileInit);
(FARPROC)XAVIFileExit = GetProcAddress(hdllAVIFILE, szAVIFileExit);
(FARPROC)XAVIFileOpen = GetProcAddress(hdllAVIFILE, szAVIFileOpen);
(FARPROC)XAVIMakeFileFromStreams = GetProcAddress(hdllAVIFILE, szAVIMakeFileFromStreams);
(FARPROC)XAVIStreamBeginStreaming = GetProcAddress(hdllAVIFILE, szAVIStreamBeginStreaming);
(FARPROC)XAVIStreamEndStreaming = GetProcAddress(hdllAVIFILE, szAVIStreamEndStreaming);
Assert(XAVIFileInit != NULL);
Assert(XAVIFileExit != NULL);
Assert(XAVIFileOpen != NULL);
Assert(XAVIMakeFileFromStreams != NULL);
}
//
// we need to call AVIFileInit() and AVIFileExit() for each task that
// is using AVIFile or things will not work right.
//
if (!(npMCI->dwFlags & MCIAVI_USING_AVIFILE)) {
npMCI->dwFlags |= MCIAVI_USING_AVIFILE;
AVIFileInit(); // Should we check the return code?
uAVIFILE++;
}
return TRUE;
}
// must be called from app thread too!
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | FreeAVIFile | called to un-RTL to AVIFILE.DLL
*
* @rdesc TRUE means OK, otherwise error
*
***************************************************************************/
BOOL FAR FreeAVIFile(NPMCIGRAPHIC npMCI)
{
if (!(npMCI->dwFlags & MCIAVI_USING_AVIFILE))
return FALSE;
Assert(hdllAVIFILE != (HMODULE)-1 && hdllAVIFILE != NULL);
// free this tasks use of AVIFile
AVIFileExit();
// if no more people using AVIFile let the DLLs go.
Assert(uAVIFILE > 0);
uAVIFILE--;
if (uAVIFILE == 0) {
FreeLibrary(hdllAVIFILE);
hdllAVIFILE = NULL;
#ifdef USE_ISVALIDINTERFACE
hdllCOMPOBJ = NULL;
#endif
}
return TRUE;
}
#endif /* USEAVIFILE */
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | OpenRiffAVIFile | Open an RIFF AVI file
*
* @parm NPMCIGRAPHIC | npMCI | Pointer to instance data.
*
* @parm BOOL | bForce | if FALSE, return error for files that
* we think should be opened by AVIFILE instead.
*
* @rdesc TRUE means OK, otherwise mci error in dwTaskError
*
***************************************************************************/
STATICFN BOOL NEAR PASCAL OpenRiffAVIFile(NPMCIGRAPHIC npMCI, BOOL bForce)
{
HMMIO hmmio;
HANDLE h = NULL;
BOOL fRet = TRUE;
MMIOINFO mmioInfo;
MMCKINFO ckRIFF;
MMCKINFO ckLIST;
MMCKINFO ckRECORD;
_fmemset(&mmioInfo, 0, sizeof(MMIOINFO));
mmioInfo.htask = (HANDLE)npMCI->hCallingTask;
hmmio = mmioOpen(npMCI->szFilename, &mmioInfo, MMIO_READ | MMIO_DENYWRITE);
if (hmmio == NULL)
hmmio = mmioOpen(npMCI->szFilename, &mmioInfo, MMIO_READ);
if (!hmmio) {
switch (mmioInfo.wErrorRet) {
case MMIOERR_OUTOFMEMORY:
npMCI->dwTaskError = MCIERR_OUT_OF_MEMORY;
break;
case MMIOERR_FILENOTFOUND:
case MMIOERR_CANNOTOPEN:
default:
npMCI->dwTaskError = MCIERR_FILE_NOT_FOUND;
break;
}
fRet = FALSE;
goto exit;
}
npMCI->hmmio = hmmio;
/*
** Descend into RIFF file
*/
if (mmioDescend(hmmio, &ckRIFF, NULL, 0) != 0) {
goto ERROR_BADFILE;
}
/*
* check for a 'QuickTime AVI' file, a QuickTime AVI file is a
* QuickTime public movie with a AVI file in the 'mdat' atom.
*/
if (ckRIFF.cksize == mmioFOURCC('m','d','a','t'))
{
DPF(("File is a QuickTime public movie\n"));
/*
* now the 'mdat' atom better be a RIFF/AVI or we cant handle it.
*/
if (mmioDescend(hmmio, &ckRIFF, NULL, 0) != 0) {
goto ERROR_BADFILE;
}
}
/* Make sure it's a RIFF file */
if (ckRIFF.ckid != FOURCC_RIFF) {
npMCI->dwTaskError = MCIERR_INVALID_FILE;
goto ERROR_NOT_AVIFILE;
}
/* Otherwise, it should be an AVI file */
if (ckRIFF.fccType != formtypeAVI) {
npMCI->dwTaskError = MCIERR_INVALID_FILE;
goto ERROR_NOT_AVIFILE;
}
/*
** Descend into header LIST
*/
ckLIST.fccType = listtypeAVIHEADER;
if (mmioDescend(hmmio, &ckLIST, &ckRIFF, MMIO_FINDLIST) != 0) {
goto ERROR_BADFILE;
}
/* Leave space at end of buffer for pad word */
h = GlobalAlloc(GMEM_MOVEABLE | GMEM_ZEROINIT, ckLIST.cksize -
sizeof(DWORD) +
sizeof(DWORD));
if (!h) {
npMCI->dwTaskError = MCIERR_OUT_OF_MEMORY;
return FALSE;
}
npMCI->lp = npMCI->lpBuffer = (LPSTR) GlobalLock(h);
DPF(("Reading header list: %lu bytes.\n", ckLIST.cksize - sizeof(DWORD)));
if (mmioRead(hmmio, npMCI->lp, ckLIST.cksize - sizeof(DWORD))
!= (LONG) (ckLIST.cksize - sizeof(DWORD))) {
npMCI->dwTaskError = MCIERR_FILE_READ;
goto ERROR_RETURN;
}
#ifdef USE_AVIFILE_FOR_NON_INT
//
// we check here for AVI RIFF files we dont want to handle with our
// built in code, and want to pass on to AVIFILE.DLL
//
// we handle the following files:
//
// interleaved
//
// we pass on the following files to AVIFILE.DLL
//
// non-interleaved
//
// pretty simple right now, just interleaved non-interlaved
// but could get as complex as you want.
//
// if there is a problem with avifile (eg dll not present) we will
// be called with bForce TRUE: this means we should open it if at
// all possible
//
if (!bForce) {
MainAVIHeader FAR * lpHdr;
lpHdr = (MainAVIHeader FAR *)((BYTE FAR *)npMCI->lp + 8);
if (!(lpHdr->dwFlags & AVIF_ISINTERLEAVED) ||
lpHdr->dwInitialFrames == 0) {
DOUT("File is not interleaved, giving it to AVIFILE.DLL\n");
goto ERROR_NOT_AVIFILE;
}
//
// ok now we have a 1:1 interleved file.
//
// always use our code on a CD-ROM, but on other media...
//
switch (npMCI->uDriveType) {
case DRIVE_CDROM:
break;
case DRIVE_REMOTE:
case DRIVE_FIXED:
case DRIVE_REMOVABLE:
break;
default:
break;
}
}
#endif
if (PEEK_DWORD() == ckidAVIMAINHDR) {
if (!ParseNewHeader(npMCI))
goto ERROR_RETURN;
} else {
goto ERROR_BADFILE;
}
/* Ascend out of header LIST */
if (mmioAscend(hmmio, &ckLIST, 0) != 0) {
npMCI->dwTaskError = MCIERR_FILE_READ;
goto ERROR_RETURN;
}
/* Initially, no frame has been drawn */
npMCI->lFrameDrawn = (- (LONG) npMCI->wEarlyRecords) - 1;
/*
** Descend into big 'Movie LIST'
*/
ckLIST.fccType = listtypeAVIMOVIE;
if (mmioDescend(hmmio, &ckLIST, &ckRIFF, MMIO_FINDLIST) != 0) {
goto ERROR_BADFILE;
}
npMCI->dwMovieListOffset = ckLIST.dwDataOffset;
/* Calculate end of 'movi' list, in case we need to read the index */
npMCI->dwBigListEnd = ckLIST.dwDataOffset + ckLIST.cksize +
(ckLIST.cksize & 1);
/*
** Descend into header of first chunk
*/
if (mmioDescend(hmmio, &ckRECORD, &ckLIST, 0) != 0) {
goto ERROR_BADFILE;
}
npMCI->dwFirstRecordType = ckRECORD.ckid;
npMCI->dwFirstRecordSize = ckRECORD.cksize + 2 * sizeof(DWORD);
npMCI->dwFirstRecordPosition = mmioSeek(hmmio, 0, SEEK_CUR);
if (mmioAscend(hmmio, &ckRECORD, 0) != 0) {
npMCI->dwTaskError = MCIERR_FILE_READ;
goto ERROR_RETURN;
}
#ifdef DEBUG
DPF2(("First record (%4.4s) 0x%lx bytes at position 0x%lx.\n",
(LPSTR)&npMCI->dwFirstRecordType,
npMCI->dwFirstRecordSize,
npMCI->dwFirstRecordPosition));
if (npMCI->dwFirstRecordPosition & 0x7ff) {
DPF(("!!\n"));
DPF(("!! This file is not properly aligned to a 2K boundary.\n"));
DPF(("!! It may not play well from CD-ROM.\n"));
DPF(("!!\n"));
}
#endif
exit:
if (!fRet)
mciaviCloseFile(npMCI);
if (h) {
npMCI->lpBuffer = NULL;
npMCI->dwBufferSize = 0L;
GlobalUnlock(h);
GlobalFree(h);
}
return fRet;
ERROR_NOT_AVIFILE:
#ifdef USEAVIFILE
npMCI->dwTaskError = AVIERR_NOT_AVIFILE; // mark as not a AVI file
goto ERROR_RETURN; // we will be called a second time
#endif
ERROR_BADFILE:
npMCI->dwTaskError = MCIERR_INVALID_FILE; // something wrong with the file
ERROR_RETURN:
fRet = FALSE;
goto exit;
}
/***************************************************************************
* @doc INTERNAL MCIAVI
*
* @api BOOL | ParseNewHeader | 'nuf said
*
***************************************************************************/
STATICFN BOOL NEAR PASCAL ParseNewHeader(NPMCIGRAPHIC npMCI)
{
DWORD dwHeaderSize;
MainAVIHeader FAR * lpHdr;
int stream;
if (GET_DWORD() != ckidAVIMAINHDR) {
goto FileError;
}
dwHeaderSize = GET_DWORD(); /* Skip size */
/* Now, we're pointing at the actual header */
lpHdr = (MainAVIHeader FAR *) npMCI->lp;
npMCI->lFrames = (LONG)lpHdr->dwTotalFrames;
npMCI->dwMicroSecPerFrame = lpHdr->dwMicroSecPerFrame;
npMCI->dwRate = 1000000;
npMCI->dwScale = npMCI->dwMicroSecPerFrame;
/* Reject some bad values */
if (!lpHdr->dwStreams || lpHdr->dwStreams > 255 || !npMCI->lFrames) {
goto FileError;
}
npMCI->streams = (int) lpHdr->dwStreams;
npMCI->dwBytesPerSec = lpHdr->dwMaxBytesPerSec;
npMCI->wEarlyRecords = (UINT) lpHdr->dwInitialFrames;
npMCI->dwSuggestedBufferSize = lpHdr->dwSuggestedBufferSize;
SetRect(&npMCI->rcMovie,0,0,(int)lpHdr->dwWidth,(int)lpHdr->dwHeight);
npMCI->dwFlags |= MCIAVI_HASINDEX;
if (!(lpHdr->dwFlags & AVIF_ISINTERLEAVED)) {
DPF(("File is not interleaved.\n"));
npMCI->dwFlags |= MCIAVI_NOTINTERLEAVED;
}
SKIP_BYTES(dwHeaderSize); /* Skip rest of chunk */
npMCI->paStreamInfo = (STREAMINFO NEAR *)
LocalAlloc(LPTR, npMCI->streams * sizeof(STREAMINFO));
// !!! error check
for (stream = 0; stream < npMCI->streams; stream++) {
AVIStreamHeader FAR * lpStream;
HPSTR hpNextChunk;
STREAMINFO * psi = &npMCI->paStreamInfo[stream];
if (GET_DWORD() != FOURCC_LIST) {
goto FileError;
}
dwHeaderSize = GET_DWORD(); /* Skip size */
hpNextChunk = npMCI->lp + (dwHeaderSize + (dwHeaderSize & 1));
if (GET_DWORD() != listtypeSTREAMHEADER) {
goto FileError;
}
/* Now, we're at the begging of the stream's header chunks. */
if (GET_DWORD() != ckidSTREAMHEADER) {
goto FileError;
}
dwHeaderSize = GET_DWORD(); /* Skip size */
/* Now, we're pointing at the stream header */
lpStream = (AVIStreamHeader FAR *) npMCI->lp;
hmemcpy(&psi->sh, lpStream, min(dwHeaderSize, sizeof(psi->sh)));
//
// reject files with more than one video stream.
//
if (psi->sh.fccType == streamtypeVIDEO &&
npMCI->nVideoStreams >= 1) {
DPF(("File has multiple video streams, giving it to AVIFILE.DLL\n"));
goto DontHandleThisFile;
}
SKIP_BYTES(dwHeaderSize);
/* Read the format */
if (GET_DWORD() != ckidSTREAMFORMAT) {
goto FileError;
}
dwHeaderSize = GET_DWORD(); /* Skip size */
if (dwHeaderSize > 16384L) {
goto FileError;
}
psi->cbFormat = dwHeaderSize;
psi->lpFormat = GlobalAllocPtr(GHND,dwHeaderSize);
if (!psi->lpFormat) {
npMCI->dwTaskError = MCIERR_OUT_OF_MEMORY;
return FALSE;
}
hmemcpy(psi->lpFormat, npMCI->lp, dwHeaderSize);
SKIP_BYTES(dwHeaderSize);
if (PEEK_DWORD() == ckidSTREAMHANDLERDATA) {
GET_DWORD();
dwHeaderSize = GET_DWORD(); /* Skip size */
psi->cbData = dwHeaderSize;
psi->lpData = GlobalAllocPtr(GHND,dwHeaderSize);
if (!psi->lpData) {
npMCI->dwTaskError = MCIERR_OUT_OF_MEMORY;
return FALSE;
}
hmemcpy(psi->lpData, npMCI->lp, dwHeaderSize);
/* Skip to end of Data chunk */
SKIP_BYTES(dwHeaderSize);
} else {
psi->cbData = 0;
psi->lpData = NULL;
}
InitStream(npMCI, psi);
npMCI->lp = hpNextChunk;
}
if (npMCI->dwTaskError) {
return FALSE;
}
return TRUE;
FileError:
npMCI->dwTaskError = MCIERR_INVALID_FILE;
return FALSE;
DontHandleThisFile:
npMCI->dwTaskError = AVIERR_NOT_AVIFILE;
return FALSE;
}
//
// --- called on worker thread ---------------------------------------------
//
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | OpenFileInit | called after a file is opened to init things
*
* @parm NPMCIGRAPHIC | npMCI | Pointer to instance data.
*
* @rdesc TRUE means OK, otherwise mci error in dwTaskError
*
***************************************************************************/
BOOL NEAR PASCAL OpenFileInit(NPMCIGRAPHIC npMCI)
{
int i;
RECT rc;
//
// lets make sure we opened something.
//
if (npMCI->streams == 0)
return FALSE;
if (npMCI->nVideoStreams + npMCI->nAudioStreams + npMCI->nOtherStreams == 0)
return FALSE;
if (npMCI->nVideoStreams == 0)
npMCI->dwFlags &= ~MCIAVI_SHOWVIDEO;
if (npMCI->nAudioStreams == 0)
npMCI->dwFlags &= ~MCIAVI_PLAYAUDIO; // No audio streams means silence
if (IsNTWOW()) {
if (!npMCI->pbiFormat) {
// Although there are valid video streams we do not appear to have
// access to a decompressor that knows what to do with them. Hence
// if we are in NT/WOW we fail the open, the call will return to
// 16 bit land and there might be a codec there that can cope
return(FALSE);
}
}
if (npMCI->nAudioStreams > 1) {
UINT wLang;
int stream;
#ifndef _WIN32
UINT (WINAPI * GetUserDefaultLangID)(void);
UINT u;
HANDLE hdll;
u = SetErrorMode(SEM_NOOPENFILEERRORBOX);
hdll = LoadLibrary(szOLENLSDLL);
SetErrorMode(u);
wLang = 0;
if ((UINT)hdll > (UINT)HINSTANCE_ERROR)
{
if ((FARPROC) GetUserDefaultLangID = GetProcAddress(hdll, szOLENLSAPI)) {
wLang = GetUserDefaultLangID();
}
FreeLibrary(hdll);
}
#else
wLang = GetUserDefaultLangID();
#endif
DPF(("Current language: %x\n", wLang));
if (wLang > 0) {
for (stream = 0; stream < npMCI->streams; stream++) {
if (SH(stream).fccType == streamtypeAUDIO) {
if (!(SH(stream).dwFlags & STREAM_ENABLED))
continue;
if (SH(stream).wLanguage == wLang) {
npMCI->nAudioStream = stream;
npMCI->psiAudio = SI(stream);
break;
}
}
}
}
}
if (npMCI->dwFlags & MCIAVI_NOTINTERLEAVED) {
npMCI->wEarlyRecords = npMCI->wEarlyVideo;
}
else {
npMCI->wEarlyRecords = max(npMCI->wEarlyVideo, npMCI->wEarlyAudio);
}
if (npMCI->wEarlyRecords == 0 &&
!(npMCI->dwFlags & MCIAVI_NOTINTERLEAVED)) {
DPF(("Interleaved file with no audio skew?\n"));
npMCI->dwFlags |= MCIAVI_NOTINTERLEAVED;
}
if (npMCI->dwFlags & MCIAVI_ANIMATEPALETTE) {
DPF(("This AVI file has palette changes.\n"));
if (npMCI->nVideoStreams > 1) {
npMCI->dwFlags &= ~MCIAVI_ANIMATEPALETTE;
DPF(("...But we are going to ignore them?\n"));
}
}
//
// this must be set
//
if (npMCI->dwSuggestedBufferSize == 0) {
for (i=0; i<npMCI->streams; i++)
npMCI->dwSuggestedBufferSize =
max(SH(i).dwSuggestedBufferSize,npMCI->dwSuggestedBufferSize);
}
//
// check all fields in the main header
//
if (npMCI->dwScale == 0 ||
npMCI->dwRate == 0) {
}
////will be set when header parsed
////npMCI->dwMicroSecPerFrame = muldiv32(npMCI->dwScale, 1000000, npMCI->dwRate);
npMCI->dwPlayMicroSecPerFrame = npMCI->dwMicroSecPerFrame;
#define COMMON_SCALE 10000
//
// convert the rate/scale into something that is normalized to 1000
//
npMCI->dwRate = muldiv32(npMCI->dwRate, COMMON_SCALE, npMCI->dwScale);
npMCI->dwScale = COMMON_SCALE;
//
// walk all streams and fix them up.
//
for (i=0; i<npMCI->streams; i++) {
STREAMINFO *psi = SI(i);
LONG lStart;
LONG lEnd;
//
// convert the rate/scale into something that is normalized to 1000
//
psi->sh.dwRate = muldiv32(psi->sh.dwRate, COMMON_SCALE, psi->sh.dwScale);
psi->sh.dwScale = COMMON_SCALE;
//
// trim any streams that hang over the movie.
//
lStart = MovieToStream(psi, 0);
lEnd = MovieToStream(psi, npMCI->lFrames);
if ((LONG)(psi->sh.dwStart + psi->sh.dwLength) > lEnd) {
DPF(("Stream #%d is too long, was %ld now %ld\n", i,
psi->sh.dwLength, lEnd - psi->sh.dwStart));
psi->sh.dwLength = lEnd - psi->sh.dwStart;
}
}
//
// If this is WOW we had better check that there is an audio codec
// available. If not, we let the 16 bit side open the video.
//
if (IsNTWOW()) {
if (SetUpAudio(npMCI, FALSE)) return FALSE;
}
//
// fix up the movie rect
//
if (IsRectEmpty(&npMCI->rcMovie)) {
DPF2(("Movie rect is empty\n"));
SetRectEmpty(&rc);
for (i=0; i<npMCI->streams; i++) {
UnionRect(&rc,&rc,&SH(i).rcFrame);
}
npMCI->rcMovie = rc;
DPF2(("Movie rect was empty, now [%d, %d, %d, %d]\n", rc));
} else {
rc = npMCI->rcMovie;
}
// check we can access the interface ptr - the main reason for this
// is that if we have pasted this interface ptr, we cannot access it on
// the worker thread (which is where we are now). Clean up the error handling
// by actually detecting this case.
if (npMCI->pf) {
IAVIStream * ps;
long l;
if ((l = AVIFileGetStream(npMCI->pf, &ps, 0, 0)) != 0) {
DPF(("avifile err %d", l));
npMCI->dwTaskError = l;
return FALSE;
} else {
if (ps->lpVtbl->FindSample(ps, 0, FIND_FROM_START|FIND_NEXT|FIND_ANY) < 0) {
npMCI->dwTaskError = MCIERR_DEVICE_NOT_READY;
ps->lpVtbl->Release(ps);
return FALSE;
}
ps->lpVtbl->Release(ps);
}
}
//
// always read the index, so we can skip frames even on CD!
//
ReadIndex(npMCI);
DPF(("Key frames are every (on average): %ld frames (%ld ms)\n",npMCI->dwKeyFrameInfo, MovieToTime(npMCI->dwKeyFrameInfo)));
// force things to happen, in case we're re-loading
SetRectEmpty(&npMCI->rcSource);
SetRectEmpty(&npMCI->rcDest);
/* this will call DrawDibBegin() ... */
if (TryPutRect(npMCI, MCI_DGV_PUT_SOURCE, &rc, &npMCI->dwTaskError)) {
return FALSE;
}
/*
* also set the dest rect. This should be done
* by the WM_SIZE message sent during SetWindowToDefaultSize.
* On NT, the WM_SIZE message is not sent synchronously since it
* is an inter-thread sendmessage (the winproc is on the original thread
* whereas we are currently running on the avi thread). The winproc
* thread may well not get the WM_SIZE message until much too late, so
* set the dest rect here. Note: don't use ResetDestRect since that
* also relies on the window size, which is not set yet.
*/
/* double frame size of destination if zoom by 2 */
if (npMCI->dwOptionFlags & MCIAVIO_ZOOMBY2)
SetRect(&rc, 0, 0, rc.right*2, rc.bottom*2);
if (TryPutRect(npMCI, MCI_DGV_PUT_DESTINATION, &rc, &npMCI->dwTaskError)) {
return FALSE;
}
if (npMCI->dwTaskError) {
return FALSE;
}
//
// size the window and things.
//
SetWindowToDefaultSize(npMCI, FALSE);
DrawBegin(npMCI, NULL);
return TRUE;
}
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | mciaviCloseFile | Close an AVI file.
*
* @parm NPMCIGRAPHIC | npMCI | Pointer to instance data.
*
* @rdesc TRUE means OK, otherwise mci error in dwTaskError
*
***************************************************************************/
BOOL FAR PASCAL mciaviCloseFile (NPMCIGRAPHIC npMCI)
{
if (!npMCI)
return FALSE;
if (npMCI->lpMMIOBuffer) {
GlobalFreePtr(npMCI->lpMMIOBuffer);
npMCI->lpMMIOBuffer = NULL;
}
npMCI->hicDraw = NULL;
if (npMCI->hicDrawDefault) {
if (npMCI->hicDrawDefault != (HIC) -1)
ICClose(npMCI->hicDrawDefault);
npMCI->hicDrawDefault = NULL;
}
if (npMCI->hicDrawFull) {
if (npMCI->hicDrawFull != (HIC) -1)
ICClose(npMCI->hicDrawFull);
npMCI->hicDrawFull = NULL;
}
if (npMCI->hicDecompress) {
// !!! What if we never began it?
ICDecompressEnd(npMCI->hicDecompress);
ICClose(npMCI->hicDecompress);
npMCI->hicDecompress = NULL;
}
if (npMCI->hicInternal) {
ICClose(npMCI->hicInternal);
npMCI->hicInternal = NULL;
}
if (npMCI->hicInternalFull) {
ICClose(npMCI->hicInternalFull);
npMCI->hicInternalFull = NULL;
}
if (npMCI->hmmio) {
mmioClose(npMCI->hmmio, 0);
npMCI->hmmio = NULL;
}
if (npMCI->hmmioAudio) {
mmioClose(npMCI->hmmioAudio, 0);
npMCI->hmmioAudio = NULL;
}
if (npMCI->pWF) {
LocalFree((HANDLE) npMCI->pWF);
npMCI->pWF = NULL;
}
if (npMCI->pbiFormat) {
GlobalFreePtr(npMCI->pbiFormat);
npMCI->pbiFormat = NULL;
}
// if (npMCI->hpal) {
// DeleteObject(npMCI->hpal);
// npMCI->hpal = NULL;
// }
if (npMCI->hpDecompress) {
GlobalFreePtr(npMCI->hpDecompress);
npMCI->hpDecompress = NULL;
}
if (npMCI->hpIndex) {
GlobalFreePtr(npMCI->hpIndex);
npMCI->hpIndex = NULL;
}
if (npMCI->hpFrameIndex) {
GlobalUnlock(npMCI->hgFrameIndex);
GlobalFree(npMCI->hgFrameIndex);
npMCI->hpFrameIndex = NULL;
npMCI->hgFrameIndex = 0;
}
if (npMCI->pVolumeTable) {
LocalFree((HLOCAL)npMCI->pVolumeTable);
npMCI->pVolumeTable = NULL;
}
#ifdef USEAVIFILE
if (npMCI->pf) {
AVIFileClose(npMCI->pf);
npMCI->pf = NULL;
}
#endif
if (npMCI->paStreamInfo) {
int i;
for (i = 0; i < npMCI->streams; i++) {
CloseStream(npMCI, &npMCI->paStreamInfo[i]);
}
LocalFree((HLOCAL)npMCI->paStreamInfo);
npMCI->paStreamInfo = NULL;
}
npMCI->streams = 0;
npMCI->nAudioStreams = 0;
npMCI->nVideoStreams = 0;
npMCI->nErrorStreams = 0;
npMCI->nOtherStreams = 0;
npMCI->wEarlyVideo = 0;
npMCI->wEarlyAudio = 0;
npMCI->wEarlyRecords = 0;
//!!! I bet we need to clear more
npMCI->dwFlags &= ~(MCIAVI_NOTINTERLEAVED |
MCIAVI_ANIMATEPALETTE |
MCIAVI_CANDRAW |
MCIAVI_HASINDEX);
return TRUE;
}
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | CloseStream | Close an StreamAVI file.
*
***************************************************************************/
STATICFN void NEAR PASCAL CloseStream(NPMCIGRAPHIC npMCI, STREAMINFO *psi)
{
psi->dwFlags &= ~STREAM_ENABLED;
////psi->sh.fccType = 0;
////psi->sh.fccHandler = 0;
if (psi->lpFormat) {
GlobalFreePtr(psi->lpFormat);
psi->lpFormat = NULL;
}
if (psi->lpData) {
GlobalFreePtr(psi->lpData);
psi->lpData = NULL;
}
if (psi->hicDraw) {
ICClose(psi->hicDraw);
psi->hicDraw = NULL;
}
#ifdef USEAVIFILE
if (psi->ps) {
AVIStreamClose(psi->ps);
psi->ps = NULL;
}
#endif
}
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | InitStream | initialize a stream
*
***************************************************************************/
STATICFN BOOL NEAR PASCAL InitStream(NPMCIGRAPHIC npMCI, STREAMINFO *psi)
{
BOOL f;
//
// set flags
//
if (psi->sh.dwFlags & AVISF_VIDEO_PALCHANGES)
psi->dwFlags |= STREAM_PALCHANGES;
psi->lStart = (LONG)psi->sh.dwStart;
psi->lEnd = (LONG)psi->sh.dwStart + psi->sh.dwLength;
if (psi->sh.fccType == streamtypeVIDEO &&
!(npMCI->dwFlags & MCIAVI_NOTINTERLEAVED))
psi->lStart -= (LONG)psi->sh.dwInitialFrames;
switch(psi->sh.fccType) {
case streamtypeVIDEO:
f = InitVideoStream(npMCI, psi);
break;
case streamtypeAUDIO:
f = InitAudioStream(npMCI, psi);
break;
default:
f = InitOtherStream(npMCI, psi);
break;
}
if (!f) {
psi->dwFlags |= STREAM_ERROR;
npMCI->nErrorStreams++;
CloseStream(npMCI, psi);
}
//
// disable the stream if the file header says to
//
if (psi->sh.dwFlags & AVISF_DISABLED) {
psi->dwFlags &= ~STREAM_ENABLED;
}
return f;
}
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | InitVideoStream | initialize a video stream
*
***************************************************************************/
STATICFN BOOL NEAR PASCAL InitVideoStream(NPMCIGRAPHIC npMCI, STREAMINFO *psi)
{
LPBITMAPINFOHEADER lpbi;
int stream = (int) (INT_PTR) (psi - npMCI->paStreamInfo);
npMCI->wEarlyVideo = (UINT)psi->sh.dwInitialFrames;
if (psi->sh.dwFlags & AVISF_VIDEO_PALCHANGES) {
//!!! is this right.
npMCI->dwFlags |= MCIAVI_ANIMATEPALETTE;
}
if (IsRectBogus(&psi->sh.rcFrame)) {
DPF(("BOGUS Stream rectangle [%d %d %d %d]\n", psi->sh.rcFrame));
SetRectEmpty(&psi->sh.rcFrame);
}
// In case the rectangle is totally wrong, chop it down to size....
// !!! What if the user _wants_ a zero-size RECT?
IntersectRect(&psi->sh.rcFrame, &psi->sh.rcFrame, &npMCI->rcMovie);
if (IsRectEmpty(&psi->sh.rcFrame)) {
DPF2(("Video stream rect is empty, correcting\n"));
SetRect(&psi->sh.rcFrame, 0, 0,
(int)((LPBITMAPINFOHEADER)psi->lpFormat)->biWidth,
(int)((LPBITMAPINFOHEADER)psi->lpFormat)->biHeight);
}
//
// make sure the biCompression is right for RLE files.
//
lpbi = (LPBITMAPINFOHEADER)psi->lpFormat;
if (psi->sh.fccHandler == 0) {
if (lpbi->biCompression == 0)
psi->sh.fccHandler = comptypeDIB;
if (lpbi->biCompression == BI_RLE8 && lpbi->biBitCount == 8)
psi->sh.fccHandler = comptypeRLE;
if (lpbi->biCompression > 256)
psi->sh.fccHandler = lpbi->biCompression;
}
if (lpbi->biCompression <= BI_RLE8 && lpbi->biBitCount == 8) {
if (psi->sh.fccHandler == comptypeRLE0 ||
psi->sh.fccHandler == comptypeRLE)
lpbi->biCompression = BI_RLE8;
// Assuming a DIB handler has RGB data will blow up files that have RLE data.
// Unfortunately, VidEdit writes out files like this.
// if (psi->sh.fccHandler == comptypeDIB)
// lpbi->biCompression = BI_RGB;
}
//
// make sure the color table is set to the right size
//
if (lpbi->biClrUsed == 0 && lpbi->biBitCount <= 8)
lpbi->biClrUsed = (1 << (int)lpbi->biBitCount);
//
// try to open draw handler
//
if (psi->sh.fccHandler) {
psi->hicDraw = ICDrawOpen(psi->sh.fccType,psi->sh.fccHandler,psi->lpFormat);
if (psi->hicDraw)
DPF(("Opened draw handler %4.4hs:%4.4hs (Stream %d)\n", (LPSTR)&psi->sh.fccType,(LPSTR)&psi->sh.fccHandler, stream));
else
DPF(("Failed to open draw handler for %4.4hs:%4.4hs (Stream %d)\n", (LPSTR)&psi->sh.fccType,(LPSTR)&psi->sh.fccHandler, stream));
}
//
// one video stream is the master, he controls the palette etc
// for lack of a better default the first valid (i.e. one we can
// handle) video stream will
// become the master.
//
if (npMCI->pbiFormat == NULL) {
npMCI->nVideoStream = stream;
npMCI->psiVideo = psi;
npMCI->pbiFormat = (LPBITMAPINFOHEADER)
GlobalAllocPtr(GMEM_MOVEABLE, psi->cbFormat);
if (!npMCI->pbiFormat) {
npMCI->dwTaskError = MCIERR_OUT_OF_MEMORY;
return FALSE;
}
//
// copy the entire format over
//
hmemcpy(npMCI->pbiFormat,psi->lpFormat,psi->cbFormat);
npMCI->bih = *npMCI->pbiFormat;
npMCI->bih.biSize = sizeof(BITMAPINFOHEADER);
npMCI->bih.biCompression = BI_RGB;
if (npMCI->bih.biClrUsed) {
/* save the original colors. */
hmemcpy(npMCI->argb, (LPBYTE)npMCI->pbiFormat + npMCI->pbiFormat->biSize,
(int)npMCI->bih.biClrUsed * sizeof(RGBQUAD));
hmemcpy(npMCI->argbOriginal, (LPSTR) npMCI->pbiFormat + npMCI->pbiFormat->biSize,
(int)npMCI->bih.biClrUsed * sizeof(RGBQUAD));
}
//
// now open the decompressor, try fastdecompress if it will do it.
//
npMCI->hicDecompress = ICLocate(ICTYPE_VIDEO,psi->sh.fccHandler,
psi->lpFormat,NULL,ICMODE_FASTDECOMPRESS);
// fast decompress may not be supported
if (npMCI->hicDecompress == NULL) {
npMCI->hicDecompress = ICDecompressOpen(ICTYPE_VIDEO,
psi->sh.fccHandler,psi->lpFormat,NULL);
}
//
// set any state data.
//
if (npMCI->hicDecompress && psi->cbData) {
ICSetState(npMCI->hicDecompress, psi->lpData, psi->cbData);
}
if (psi->hicDraw == NULL && npMCI->hicDecompress == NULL &&
psi->sh.fccHandler != comptypeRLE0 &&
psi->sh.fccHandler != comptypeNONE &&
psi->sh.fccHandler != comptypeDIB &&
psi->sh.fccHandler != comptypeRLE &&
psi->sh.fccHandler != 0) {
DPF(("Unable to open compressor '%4.4hs'!!!\n", (LPSTR) &psi->sh.fccHandler));
npMCI->nVideoStream = -1;
npMCI->psiVideo = NULL;
GlobalFreePtr(npMCI->pbiFormat);
npMCI->pbiFormat = NULL;
//
// we would like to return a custom error but by the time the
// user (application) comes to retrieve the error text MCI will
// have unloaded us (because the open failed) and therefore
// will not be able to get our specific error text.
// Hence we return a bogus generic error.
//
#ifdef _WIN32
SetLastError(MCIERR_AVI_NOCOMPRESSOR);
#endif
if (npMCI->streams == 1) // this is the only stream
npMCI->dwTaskError = MMSYSERR_NODRIVER; // MCIERR_AVI_NOCOMPRESSOR;
return FALSE; // cant load this video stream
}
}
else {
//
// this is not the default video stream find a draw handler that
// can deal with the stream.
//
//
// try VIDS.DRAW
//
// if that fails open a draw handler not-specific to the format
//
if (psi->hicDraw == NULL) {
psi->hicDraw = ICOpen(psi->sh.fccType,FOURCC_AVIDraw,ICMODE_DRAW);
if (psi->hicDraw)
DOUT("Opened draw handler VIDS.DRAW\n");
if (psi->hicDraw && ICDrawQuery(psi->hicDraw,psi->lpFormat) != ICERR_OK) {
DOUT("Closing VIDS.DRAW because it cant handle this format");
ICClose(psi->hicDraw);
psi->hicDraw = NULL;
}
}
//
// if that fails open our internal handler.
//
if (psi->hicDraw == NULL) {
psi->hicDraw = ICOpenFunction(psi->sh.fccType,
FOURCC_AVIDraw,ICMODE_DRAW,(FARPROC)ICAVIDrawProc);
if (psi->hicDraw)
DOUT("Opened Internal draw handler\n");
}
}
npMCI->dwFlags |= MCIAVI_NEEDDRAWBEGIN;
psi->dwFlags |= STREAM_VIDEO; // is a video stream
psi->dwFlags |= STREAM_ENABLED;
npMCI->nVideoStreams++;
return TRUE;
}
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | InitAudioStream | initialize a audio stream
*
***************************************************************************/
STATICFN BOOL NEAR PASCAL InitAudioStream(NPMCIGRAPHIC npMCI, STREAMINFO *psi)
{
int stream = (int) (INT_PTR) (psi - npMCI->paStreamInfo);
LPWAVEFORMAT pwf;
npMCI->wEarlyAudio = (UINT)psi->sh.dwInitialFrames;
pwf = (LPWAVEFORMAT)psi->lpFormat;
if (pwf->nChannels == 0 || pwf->nSamplesPerSec == 0) {
return FALSE;
}
if (pwf->wFormatTag == WAVE_FORMAT_PCM) {
pwf->nBlockAlign = pwf->nChannels *
((((LPPCMWAVEFORMAT)pwf)->wBitsPerSample + 7) / 8);
pwf->nAvgBytesPerSec = pwf->nBlockAlign * pwf->nSamplesPerSec;
}
psi->sh.dwSampleSize = pwf->nBlockAlign;
psi->dwFlags |= STREAM_AUDIO; // audio stream
psi->dwFlags |= STREAM_ENABLED; // enabled by default.
//
// make sure dwRate and dwScale are right
// dwRate/dwScale should be blocks/sec
//
Assert(muldiv32(pwf->nAvgBytesPerSec,1000,pwf->nBlockAlign) ==
muldiv32(psi->sh.dwRate, 1000, psi->sh.dwScale));
//
// just to be safe set these ourself to the right value.
//
psi->sh.dwRate = pwf->nAvgBytesPerSec;
psi->sh.dwScale = pwf->nBlockAlign;
//
// only one audio stream can be active at once
// for lack of a better default the first audio stream will
// become the active one.
//
if (npMCI->nAudioStreams == 0) {
npMCI->nAudioStream = stream;
npMCI->psiAudio = psi;
}
npMCI->nAudioStreams++;
return TRUE;
}
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | InitOtherStream | initialize a random stream
*
***************************************************************************/
STATICFN BOOL NEAR PASCAL InitOtherStream(NPMCIGRAPHIC npMCI, STREAMINFO *psi)
{
int stream = (int) (INT_PTR) (psi - npMCI->paStreamInfo);
/* Open the specified video compressor */
psi->hicDraw = ICDrawOpen(psi->sh.fccType,psi->sh.fccHandler,psi->lpFormat);
if (psi->hicDraw == NULL) {
DPF(("Unable to play stream!\n"));
return FALSE;
}
if (psi->cbData > 0) {
ICSetState(psi->hicDraw, psi->lpData, psi->cbData);
}
psi->dwFlags |= STREAM_ENABLED;
////psi->dwFlags |= STREAM_OTHER;
npMCI->nOtherStreams++;
return TRUE;
}
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | CleanIndex | This function cleans up the index loaded by
* ReadIndex() it does the following when cleaning up the index:
*
* converts all offsets to be absolute
*
* converts "alpha" format index's into new format.
*
* computes the max buffer size needed to read this file.
*
***************************************************************************/
INLINE static BOOL NEAR CleanIndex(NPMCIGRAPHIC npMCI)
{
LONG lScan;
AVIINDEXENTRY FAR * px;
AVIINDEXENTRY FAR * pxRec=NULL;
DWORD lIndexAdjust;
Assert(npMCI->hpIndex != NULL);
px = (AVIINDEXENTRY FAR *)npMCI->hpIndex;
#ifdef ALPHAFILES
if (npMCI->dwFlags & MCIAVI_USINGALPHAFORMAT)
lIndexAdjust = 0;
else
#endif
if (// (avihdr.dwFlags & AVIF_MUSTUSEINDEX) ||
(px->dwChunkOffset < 100))
lIndexAdjust = npMCI->dwMovieListOffset;
else
lIndexAdjust = (npMCI->dwMovieListOffset + sizeof(DWORD)) -
px->dwChunkOffset;
//!!! only compute this for the video stream! (or interleaved...)
npMCI->dwSuggestedBufferSize = 0; // lets get this exactly right
DPF(("Adjusting index by %ld bytes....\n", lIndexAdjust));
/* Can we do anything to see if the index is valid? */
for (lScan = 0; lScan < (LONG)npMCI->macIndex;
lScan++, ++((AVIINDEXENTRY _huge *)px)) {
DWORD ckid;
//
// adjust the offset to be absolute
//
px->dwChunkOffset += lIndexAdjust;
// get ckid
ckid = px->ckid;
//
// make sure the buffer size is right, ignore audio chunks because
// they are either in a 'rec' or we will be reading them into
// internal buffers not the main buffer.365
//
if (((npMCI->dwFlags & MCIAVI_NOTINTERLEAVED) ||
ckid == listtypeAVIRECORD) &&
TWOCCFromFOURCC(ckid) != cktypeWAVEbytes) {
if (px->dwChunkLength + 8 > npMCI->dwSuggestedBufferSize)
npMCI->dwSuggestedBufferSize = px->dwChunkLength + 12;
}
#ifdef ALPHAFILES
//
// convert a "old" index to a new index
//
if (npMCI->dwFlags & MCIAVI_USINGALPHAFORMAT) {
switch(ckid) {
case ckidDIBbits:
px->dwFlags |= AVIIF_KEYFRAME;
px->ckid = MAKEAVICKID(cktypeDIBbits, 0);
break;
case ckidDIBcompressed:
px->ckid = MAKEAVICKID(cktypeDIBcompressed, 0);
break;
case ckidDIBhalfframe:
px->ckid = MAKEAVICKID(cktypeDIBhalf, 0);
break;
case ckidPALchange:
px->ckid = MAKEAVICKID(cktypePALchange, 0);
break;
case ckidWAVEbytes:
px->ckid = MAKEAVICKID(cktypeWAVEbytes, 1);
break;
case ckidWAVEsilence:
px->ckid = MAKEAVICKID(cktypeWAVEsilence, 1);
break;
case ckidAVIPADDING:
case ckidOLDPADDING:
px->ckid = ckidAVIPADDING;
break;
}
ckid = px->ckid;
}
#endif
//
// do special things with the video stream.
//
if (StreamFromFOURCC(ckid) == (UINT)npMCI->nVideoStream) {
//
// fix up bogus index's by adding any missing AVIIF_KEYFRAME
// bits. ie this only applies for RLE files.
//
if (TWOCCFromFOURCC(ckid) == cktypeDIBbits &&
VIDFMT(npMCI->nVideoStream)->biCompression <= BI_RLE8)
px->dwFlags |= AVIIF_KEYFRAME;
//
// for video streams, make sure the palette changes are marked
// as a no time chunk
//
if (TWOCCFromFOURCC(ckid) == cktypePALchange)
px->dwFlags |= AVIIF_NOTIME/*|AVIIF_PALCHANGE*/;
//
// make sure the 'REC ' list has the right flags.
//
if (pxRec) {
if ((px->dwFlags & AVIIF_KEYFRAME) !=
(pxRec->dwFlags & AVIIF_KEYFRAME)) {
// Record list does not have correct flags
pxRec->dwFlags &= ~AVIIF_KEYFRAME;
pxRec->dwFlags |= (px->dwFlags & AVIIF_KEYFRAME);
}
}
}
if (ckid == listtypeAVIRECORD) {
pxRec = px;
if (npMCI->dwFlags & MCIAVI_NOTINTERLEAVED) {
DPF(("Non interleaved file with a 'REC ' in it?\n"));
npMCI->wEarlyRecords = max(npMCI->wEarlyVideo, npMCI->wEarlyAudio);
if (npMCI->wEarlyRecords > 0) {
DPF(("Interlaved file with bad header\n"));
npMCI->dwFlags &= ~MCIAVI_NOTINTERLEAVED;
}
}
}
}
return TRUE;
}
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | MakeFrameIndex | makes the frame index
*
* the frame index is a array of AVIFRAMEINDEX entries, one for each
* frame in the movie. using the frame index we can easily find
* a given frame, along with it's keyframe and palette.
*
***************************************************************************/
static BOOL NEAR MakeFrameIndex(NPMCIGRAPHIC npMCI)
{
LONG nFrames;
LONG iFrameStart;
LONG iFrame;
LONG iKeyFrame;
LONG nKeyFrames;
LONG iScan;
LONG iNewIndex;
LONG iPalette;
BOOL fInterleaved;
DWORD ckid;
STREAMINFO *psi;
AVIINDEXENTRY _huge * pNewIndex;
AVIINDEXENTRY _huge * pIndexEntry;
AVIFRAMEINDEX _huge * pFrameIndex;
if (npMCI->nVideoStreams == 0)
return TRUE;
if (npMCI->hpFrameIndex != NULL)
return TRUE;
psi = npMCI->psiVideo;
Assert(psi != NULL);
fInterleaved = !(npMCI->dwFlags & MCIAVI_NOTINTERLEAVED);
if (fInterleaved &&
muldiv32(npMCI->dwRate, 1000, npMCI->dwScale) !=
muldiv32(psi->sh.dwRate, 1000, psi->sh.dwScale)) {
//
// master video stream should match the movie rate!
//
AssertSz(FALSE, "Video stream differnet rate than movie");
npMCI->dwRate = psi->sh.dwRate;
npMCI->dwScale = psi->sh.dwScale;
}
if (fInterleaved)
iFrameStart = -(LONG)npMCI->wEarlyRecords;
else
iFrameStart = -(LONG)npMCI->wEarlyVideo;
nFrames = npMCI->lFrames - iFrameStart;
// hpFrameIndex is modified to point partway into the block.
// therefore we need to remember the handle of the block so we
// can free it correctly (esp on NT)
if ( (npMCI->hgFrameIndex = GlobalAlloc(GMEM_SHARE|GHND, (DWORD)(nFrames+1) * sizeof(AVIFRAMEINDEX)))
&& (npMCI->hpFrameIndex = GlobalLock(npMCI->hgFrameIndex))) {
} else {
// We failed to allocate, or we failed to lock down. Clean up
// and return an error.
if (npMCI->hgFrameIndex) {
GlobalFree(npMCI->hgFrameIndex);
npMCI->hgFrameIndex = 0;
}
DPF(("Couldn't allocate memory for frame index!\n"));
return FALSE;
}
//
// do this so we can just index the array with the frame number
// (positive or neg)
//
npMCI->hpFrameIndex += (-iFrameStart);
pFrameIndex = npMCI->hpFrameIndex;
iFrame = iFrameStart;
iKeyFrame = -(LONG)npMCI->wEarlyVideo; // iFrameStart;
iNewIndex = 0;
iPalette = -1; // first palette
nKeyFrames= 0;
#ifdef USEAVIFILE
if (npMCI->pf) {
PAVISTREAM ps = SI(npMCI->nVideoStream)->ps;
for (iFrame = 0; iFrame < npMCI->lFrames; iFrame++) {
LONG iKey;
iKey = AVIStreamFindSample(ps,iFrame,FIND_PREV|FIND_KEY);
iPalette = AVIStreamFindSample(ps,iFrame,FIND_PREV|FIND_FORMAT);
if (iKey != -1)
iKeyFrame = iKey;
if (iPalette == -1)
iPalette = 0;
pFrameIndex[iFrame].iPrevKey = (UINT)(iFrame - iKeyFrame);
pFrameIndex[iFrame].iNextKey = 0;
pFrameIndex[iFrame].iPalette = (WORD)iPalette;
pFrameIndex[iFrame].dwOffset = 0;
pFrameIndex[iFrame].dwLength = 0;
Assert(iPalette <= 0xFFFF);
if (iFrame - iKeyFrame > 0xFFFF) {
//!!! we need to set a flag!
//!!! we need to throw out the index!
AssertSz(FALSE, "File has too few key frames");
pFrameIndex[iFrame].iPrevKey = 0;
}
}
goto ack;
}
#endif
Assert(npMCI->hpIndex != NULL);
Assert(npMCI->macIndex != 0L);
pNewIndex = npMCI->hpIndex;
pIndexEntry = npMCI->hpIndex;
for (iScan = 0; iScan < (LONG)npMCI->macIndex; iScan++, pIndexEntry++) {
ckid = pIndexEntry->ckid;
//
// check for palette changes.
//
if (StreamFromFOURCC(ckid) == (UINT)npMCI->nVideoStream &&
TWOCCFromFOURCC(ckid) == cktypePALchange) {
iPalette = iNewIndex;
pNewIndex[iNewIndex++] = *pIndexEntry;
if (fInterleaved)
pFrameIndex[iFrame-1].iPalette = (WORD)iPalette;
}
//
// remove the video stream from the master index
//
if ((ckid != listtypeAVIRECORD) &&
(StreamFromFOURCC(ckid) != (UINT)npMCI->nVideoStream)) {
pNewIndex[iNewIndex++] = *pIndexEntry;
}
//
// in interleaved files a "frame" happens every list record
//
// in non-interleaved files a "frame" happens every piece of
// data in the video stream (except no time chunks)
//
if (fInterleaved) {
if (ckid != listtypeAVIRECORD)
continue;
} else {
if ((StreamFromFOURCC(ckid) != (UINT)npMCI->nVideoStream) ||
(pIndexEntry->dwFlags & AVIIF_NOTIME))
continue;
}
AssertSz(iFrame < npMCI->lFrames,"Too many frames in index!");
if (iFrame >= npMCI->lFrames) {
break;
}
if (pIndexEntry->dwFlags & AVIIF_KEYFRAME) {
iKeyFrame = iFrame;
nKeyFrames++;
}
pFrameIndex[iFrame].iPrevKey = (UINT)(iFrame - iKeyFrame);
pFrameIndex[iFrame].iNextKey = 0;
pFrameIndex[iFrame].iPalette = (WORD)iPalette;
pFrameIndex[iFrame].dwOffset = pIndexEntry->dwChunkOffset;
pFrameIndex[iFrame].dwLength = pIndexEntry->dwChunkLength;
if (fInterleaved)
pFrameIndex[iFrame].dwOffset += 3 * sizeof(DWORD);
Assert(iPalette <= 0xFFFF);
if (iFrame - iKeyFrame > 0xFFFF) {
//!!! we need to set a flag!
//!!! we need to throw out the index!
AssertSz(FALSE, "File has too few key frames");
pFrameIndex[iFrame].iPrevKey = 0;
}
iFrame++;
}
ack:
//
// iFrame better equal npMCI->lFrames
//
Assert(iFrame == npMCI->lFrames);
if (iFrame < npMCI->lFrames)
npMCI->lFrames = iFrame;
//
// make a "dummy" last frame
//
pFrameIndex[iFrame].iPrevKey = (UINT)(iFrame - iKeyFrame);
pFrameIndex[iFrame].iNextKey = 0;
pFrameIndex[iFrame].iPalette = (WORD)iPalette;
pFrameIndex[iFrame].dwOffset = 0;
pFrameIndex[iFrame].dwLength = 0;
//
// compute the key frames every value
//
if (nKeyFrames) {
if (nKeyFrames > 1)
npMCI->dwKeyFrameInfo = (DWORD)((nFrames + nKeyFrames/2)/nKeyFrames);
else
npMCI->dwKeyFrameInfo = 0;
}
//
// now go through the index, and fix all the iNextKey fields
//
pFrameIndex = npMCI->hpFrameIndex;
////iKeyFrame = npMCI->lFrames; //!!! what should this be set to? zero?
for (iFrame = npMCI->lFrames; iFrame>=iFrameStart; iFrame--)
{
if (pFrameIndex[iFrame].iPrevKey == 0)
iKeyFrame = iFrame;
if (iKeyFrame >= iFrame)
pFrameIndex[iFrame].iNextKey = (UINT)(iKeyFrame - iFrame);
else
pFrameIndex[iFrame].iNextKey = 0xFFFF; // way far away
if (iKeyFrame - iFrame > 0xFFFF) {
//!!! we need to set a flag!
//!!! we need to throw out the index!
AssertSz(FALSE, "File has too few key frames");
pFrameIndex[iFrame].iNextKey = 0;
}
}
//
// we dont need the index, if we are using AVIFile or
// we have a interleaved file. when the file is interleaved
// we never do random access (except for palette changes)
//
// !!!this is not true, we need the index iff we have a audio only
// file or we play a interleaved file real slow.
//
if (npMCI->pf /* ||
(fInterleaved && !(npMCI->dwFlags & MCIAVI_ANIMATEPALETTE))*/ ) {
DOUT("The Master index must go!\n");
iNewIndex = 0;
}
//
// now re-alloc the master index down to size.
//
// !!! do we even need the master index anymore, for interleaved files?
//
DPF(("Master index was %ld entries now %ld\n",npMCI->macIndex, iNewIndex));
npMCI->macIndex = iNewIndex;
if (iNewIndex > 0) {
npMCI->hpIndex = (AVIINDEXENTRY _huge *)
GlobalReAllocPtr(npMCI->hpIndex,
(LONG)iNewIndex * sizeof(AVIINDEXENTRY),
GMEM_MOVEABLE | GMEM_SHARE);
Assert(npMCI->hpIndex != NULL);
}
else {
if (npMCI->hpIndex)
GlobalFreePtr(npMCI->hpIndex);
npMCI->hpIndex = NULL;
}
return TRUE;
}
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | ReadIndex | Read the index into npMCI->hpIndex. Should
* only be called if the HASINDEX flag is set.
*
* @parm NPMCIGRAPHIC | npMCI | Pointer to instance data
*
* @rdesc TRUE means no errors, false means unable to read index.
*
***************************************************************************/
BOOL FAR PASCAL ReadIndex(NPMCIGRAPHIC npMCI)
{
MMCKINFO ck;
DWORD dwOldPos;
if (npMCI->hpIndex || npMCI->hpFrameIndex)
return TRUE;
if (!(npMCI->dwFlags & MCIAVI_HASINDEX))
return FALSE;
if (npMCI->pf) {
MakeFrameIndex(npMCI);
return TRUE;
}
#if 0
if (GetCurrentTask() != npMCI->hTask) {
/* this function is called (from GraphicStatus) when
* possibly playing - so we have to suspend play while we read
* the index.
*/
// won't work with the current multi-thread design
// TEMPORARYSTATE ts;
// if (StopTemporarily(npMCI, &ts) == 0) {
// mciaviTaskMessage(npMCI, TASKREADINDEX);
// RestartAgain(npMCI, &ts);
// return (npMCI->hpIndex != NULL);
// }
return(FALSE);
}
#else
if (GetCurrentTask() != npMCI->hTask)
return FALSE;
#endif
dwOldPos = mmioSeek(npMCI->hmmio, 0, SEEK_CUR);
DPF(("Reading index: starting from %lx\n", npMCI->dwBigListEnd));
if (mmioSeek(npMCI->hmmio, npMCI->dwBigListEnd, SEEK_SET) == -1) {
IndexReadError:
DPF(("Error reading index!\n"));
npMCI->dwFlags &= ~(MCIAVI_HASINDEX);
mmioSeek(npMCI->hmmio, dwOldPos, SEEK_SET);
return FALSE;
}
ck.ckid = ckidAVINEWINDEX;
if (mmioDescend(npMCI->hmmio, &ck, NULL, MMIO_FINDCHUNK) != 0) {
goto IndexReadError;
}
/* A zero-size index isn't much good. */
if (ck.cksize == 0)
goto IndexReadError;
npMCI->macIndex = ck.cksize / sizeof(AVIINDEXENTRY);
npMCI->hpIndex = (AVIINDEXENTRY _huge *)
GlobalAllocPtr(GMEM_SHARE | GMEM_MOVEABLE, ck.cksize);
if (!npMCI->hpIndex) {
DPF(("Insufficient memory to read index.\n"));
goto IndexReadError;
}
#ifndef _WIN32
Assert(OFFSETOF(npMCI->hpIndex) == 0);
#endif
if (mmioRead(npMCI->hmmio, (HPSTR) npMCI->hpIndex, ck.cksize) != (LONG) ck.cksize) {
Assert(0);
goto IndexReadError;
}
CleanIndex(npMCI);
MakeFrameIndex(npMCI);
////should we do this for audio? remove video data?
////MakeStreamIndex(npMCI, ???);
mmioSeek(npMCI->hmmio, dwOldPos, SEEK_SET);
return TRUE;
}
/***************************************************************************
* @doc INTERNAL MCIAVI
*
* @api BOOL | IsRectBogus | 'nuf said
*
***************************************************************************/
INLINE static BOOL NEAR PASCAL IsRectBogus(RECT* prc)
{
if (prc->right - prc->left <= 0 ||
prc->bottom - prc->top <= 0 ||
prc->bottom <= 0 ||
prc->right <= 0)
return TRUE;
else
return FALSE;
}
#ifndef _WIN32 // _WIN32 has one!
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api LONG | atol | local version of atol
*
***************************************************************************/
static LONG NEAR PASCAL atol(char *sz)
{
LONG l = 0;
while (*sz && *sz >= '0' && *sz <= '9')
l = l*10 + *sz++ - '0';
return l;
}
#endif
#ifndef _WIN32
/*--------------------------------------------------------------------------
*
* IsCDROMDrive() -
*
* Purpose: Return non-zero if a RAM drive
*
* wDrive drive index (0=A, 1=B, ...)
*
* return TRUE/FALSE
*-------------------------------------------------------------------------*/
#pragma optimize("", off)
static BOOL NEAR PASCAL IsCDROMDrive(UINT wDrive)
{
BOOL f;
_asm {
mov ax, 1500h /* first test for presence of MSCDEX */
xor bx, bx
int 2fh
mov ax, bx /* MSCDEX is not there if bx is still zero */
or ax, ax /* ...so return FALSE from this function */
jz no_mscdex
mov ax, 150bh /* MSCDEX driver check API */
mov cx, wDrive /* ...cx is drive index */
int 2fh
no_mscdex:
mov f,ax
}
return f;
}
#pragma optimize("", on)
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | IsNetFile | is the passed file on a network drive?
*
***************************************************************************/
static BOOL NEAR PASCAL IsNetFile(LPTSTR szFile)
{
OFSTRUCT of;
if (OpenFile(szFile, &of, OF_PARSE) == -1)
return FALSE;
AnsiUpper(of.szPathName);
if (of.szPathName[0] == '\\' && of.szPathName[1] == '\\')
return TRUE;
if (of.szPathName[0] == '/' && of.szPathName[1] == '/')
return TRUE;
if (of.szPathName[1] == ':' &&
GetDriveType(of.szPathName[0] - 'A') == DRIVE_REMOTE &&
!IsCDROMDrive(of.szPathName[0] - 'A'))
return TRUE;
return FALSE;
}
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api BOOL | IsCDROMFile | is the passed file on a CD-ROM drive?
*
***************************************************************************/
static BOOL NEAR PASCAL IsCDROMFile(LPTSTR szFile)
{
OFSTRUCT of;
if (OpenFile(szFile, &of, OF_PARSE) == -1)
return FALSE;
AnsiUpper(of.szPathName);
if (of.szPathName[0] == '\\' && of.szPathName[1] == '\\')
return FALSE;
if (of.szPathName[0] == '/' && of.szPathName[1] == '/')
return FALSE;
if (of.szPathName[1] == ':' &&
GetDriveType(of.szPathName[0] - 'A') == DRIVE_REMOTE &&
IsCDROMDrive(of.szPathName[0] - 'A'))
return TRUE;
return FALSE;
}
/***************************************************************************
*
* @doc INTERNAL MCIAVI
*
* @api UINT | GetFileDriveType | return drive type given a file
*
* DRIVE_CDROM
* DRIVE_REMOTE
* DRIVE_FIXED
* DRIVE_REMOVABLE
*
***************************************************************************/
static UINT NEAR PASCAL GetFileDriveType(LPSTR szPath)
{
if (IsCDROMFile(szPath))
return DRIVE_CDROM;
if (IsNetFile(szPath))
return DRIVE_REMOTE;
if (szPath[1] == ':')
return GetDriveType(szPath[0] - 'A');
return 0;
}
#else // _WIN32
/*
* We cannot pass the call directly to GetDriveType as we have a full
* pathname - and that gets rejected by GetFileDriveType. Using a
* static variable is ok - the open call is serialised. The assumption
* is that this routine is ONLY called with complete path information.
*/
TCHAR DriveType[4] = TEXT(".:\\");
static UINT NEAR PASCAL GetFileDriveType(LPTSTR szPath)
{
Assert(szPath != NULL);
if (*szPath == TEXT('\\')) {
Assert(szPath[1] == TEXT('\\'));
return(DRIVE_REMOTE);
}
if (szPath[1] == TEXT(':')) {
DriveType[0] = szPath[0];
return GetDriveType(DriveType);
}
return 0;
}
#endif
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