/**************************************************************************** * * dialogs.c: Code for dialog procs of the video capture tool * * Microsoft Video for Windows Capture Tool * * Copyright (c) 1992, 1993 Microsoft Corporation. All Rights Reserved. * * ***************************************************************************/ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "arrow.h" #include "rlmeter.h" #include #include "vidcap.h" #include "vidframe.h" #include "help.h" static long GetFreeDiskSpace(LPSTR) ; static int CountMCIDevices(UINT) ; BOOL FAR PASCAL MCISetupProc(HWND, unsigned, UINT, LONG); //--- utility functions --------------------------------------------------- /*----------------------------------------------------------------------------*\ | SmartWindowPosition (HWND hWndDlg, HWND hWndShow) | | | Description: | | This function attempts to position a dialog box so that it | does not obscure the hWndShow window. This function is | typically called during WM_INITDIALOG processing. | | | Arguments: | | hWndDlg handle of the soon to be displayed dialog | hWndShow handle of the window to keep visible | | | Returns: | | 1 if the windows overlap and positions were adjusted | 0 if the windows don't overlap | | \*----------------------------------------------------------------------------*/ int SmartWindowPosition (HWND hWndDlg, HWND hWndShow) { RECT rc, rcDlg, rcShow; int iHeight, iWidth; int iScreenHeight, iScreenWidth; GetWindowRect(hWndDlg, &rcDlg); GetWindowRect(hWndShow, &rcShow); iScreenHeight = GetSystemMetrics(SM_CYSCREEN); iScreenWidth = GetSystemMetrics(SM_CXSCREEN); InflateRect (&rcShow, 5, 5); // allow a small border if (IntersectRect(&rc, &rcDlg, &rcShow)){ /* the two do intersect, now figure out where to place */ /* this dialog window. Try to go below the Show window*/ /* first and then to the right, top and left. */ /* get the size of this dialog */ iHeight = rcDlg.bottom - rcDlg.top; iWidth = rcDlg.right - rcDlg.left; if ((UINT)(rcShow.bottom + iHeight + 1) < (UINT)iScreenHeight){ /* will fit on bottom, go for it */ rc.top = rcShow.bottom + 1; rc.left = (((rcShow.right - rcShow.left)/2) + rcShow.left) - (iWidth/2); } else if ((UINT)(rcShow.right + iWidth + 1) < (UINT)iScreenWidth){ /* will fit to right, go for it */ rc.left = rcShow.right + 1; rc.top = (((rcShow.bottom - rcShow.top)/2) + rcShow.top) - (iHeight/2); } else if ((UINT)(rcShow.top - iHeight - 1) > 0){ /* will fit on top, handle that */ rc.top = rcShow.top - iHeight - 1; rc.left = (((rcShow.right - rcShow.left)/2) + rcShow.left) - (iWidth/2); } else if ((UINT)(rcShow.left - iWidth - 1) > 0){ /* will fit to left, do it */ rc.left = rcShow.left - iWidth - 1; rc.top = (((rcShow.bottom - rcShow.top)/2) + rcShow.top) - (iHeight/2); } else { /* we are hosed, they cannot be placed so that there is */ /* no overlap anywhere. To minimize the damage just put*/ /* the dialog in the lower left corner of the screen */ rc.top = (int)iScreenHeight - iHeight; rc.left = (int)iScreenWidth - iWidth; } /* make any adjustments necessary to keep it on the screen */ if (rc.left < 0) rc.left = 0; else if ((UINT)(rc.left + iWidth) > (UINT)iScreenWidth) rc.left = (int)(iScreenWidth - iWidth); if (rc.top < 0) rc.top = 0; else if ((UINT)(rc.top + iHeight) > (UINT)iScreenHeight) rc.top = (int)iScreenHeight - iHeight; SetWindowPos(hWndDlg, NULL, rc.left, rc.top, 0, 0, SWP_NOSIZE|SWP_NOZORDER|SWP_NOACTIVATE); return 1; } // if the windows overlap by default return 0; } // // GetFreeDiskSpace: Function to Measure Available Disk Space // static long GetFreeDiskSpace(LPSTR pFile) { DWORD dwFreeClusters, dwBytesPerSector, dwSectorsPerCluster, dwClusters; char RootName[MAX_PATH]; LPSTR ptmp; //required arg // need to find path for root directory on drive containing // this file. GetFullPathName(pFile, sizeof(RootName)/sizeof(RootName[0]), RootName, &ptmp); // truncate this to the name of the root directory (god how tedious) if ((RootName[0] == TEXT('\\')) && (RootName[1] == TEXT('\\'))) { // path begins with \\server\share\path so skip the first // three backslashes ptmp = &RootName[2]; while (*ptmp && (*ptmp != TEXT('\\'))) { ptmp++; } if (*ptmp) { // advance past the third backslash ptmp++; } } else { // path must be drv:\path ptmp = RootName; } // find next backslash and put a null after it while (*ptmp && (*ptmp != TEXT('\\'))) { ptmp++; } // found a backslash ? if (*ptmp) { // skip it and insert null ptmp++; *ptmp = TEXT('\0'); } if (!GetDiskFreeSpace(RootName, &dwSectorsPerCluster, &dwBytesPerSector, &dwFreeClusters, &dwClusters)) { MessageBoxID(IDS_ERR_MEASUREFREEDISK, MB_OK | MB_ICONINFORMATION); return (-1); } return(dwSectorsPerCluster * dwBytesPerSector * dwFreeClusters); } // // CountMCIDevices: Function to Find the Number of MCI Devices of a Type // static int CountMCIDevices(UINT wType) { int nTotal = 0 ; DWORD dwCount ; MCI_SYSINFO_PARMS mciSIP ; mciSIP.dwCallback = 0 ; mciSIP.lpstrReturn = (LPSTR)(LPVOID) &dwCount ; mciSIP.dwRetSize = sizeof(DWORD) ; mciSIP.wDeviceType = wType ; // Use an MCI command to get the info if (! mciSendCommand(0, MCI_SYSINFO, MCI_SYSINFO_QUANTITY, (DWORD)(LPVOID) &mciSIP)) nTotal = (int) *((LPDWORD) mciSIP.lpstrReturn) ; return nTotal ; } /* lMicroSec = StringRateToMicroSec(szRate) * * Convert (e.g. "3.75" representing 3.75 frames per second) * to microseconds (e.g. 266667L microseconds per frame). * * If the rate is close to zero or negative, then 0L is returned. */ DWORD StringRateToMicroSec(PSTR szRate) { double dRate; dRate = atof(szRate); if (dRate < 0.0001) { return 0L; } else { return (DWORD) /*floor*/((1e6 / dRate) + 0.5); } } /* ach = MicroSecToStringRate(achRate, lMicroSec) * * Convert (e.g. 266667L microseconds per frame) to a * string rate (e.g. "3.75" representing 3.75 frames per second). * Returns . */ PSTR MicroSecToStringRate(PSTR achRate, DWORD dwMicroSec) { sprintf(achRate, "%.3f", (dwMicroSec == 0L) ? 0.0 : (1e6 / (double) dwMicroSec)); return achRate; } /* * update the text of an edit field based on a comarrow up or down change * - write the text in N.NNN format (truncated to an integer) */ LONG FAR PASCAL MilliSecVarArrowEditChange( HWND hwndEdit, UINT uCode, LONG lMin, LONG lMax, UINT uInc ) { char achTemp[32]; LONG l; GetWindowText(hwndEdit, achTemp, sizeof(achTemp)); l = atol(achTemp); if(uCode == SB_LINEUP ) { if(l + (long)uInc <= lMax ) { l += uInc; wsprintf(achTemp, "%ld.000", l ); SetWindowText(hwndEdit, achTemp ); } else { MessageBeep( 0 ); } } else if (uCode == SB_LINEDOWN ) { if( l-(long)uInc >= lMin ) { l -= uInc; wsprintf( achTemp, "%ld.000", l ); SetWindowText( hwndEdit, achTemp ); } else { MessageBeep( 0 ); } } return( l ); } BOOL MCIGetDeviceNameAndIndex (HWND hwnd, LPINT lpnIndex, LPSTR lpName) { HWND hwndCB; char buf[160]; char *cp; hwndCB = GetDlgItem( hwnd, IDD_MCI_SOURCE ); *lpnIndex = (int)SendMessage( hwndCB, CB_GETCURSEL, 0, 0L); SendMessage( hwndCB, CB_GETLBTEXT, *lpnIndex, (LONG)(LPSTR) buf ); // Point cp to the system name for (cp = buf + lstrlen(buf); cp > buf; cp--) { if (*cp == ' ' && *(cp-1) == ',') { cp++; break; } } lstrcpy (lpName, cp); return TRUE; } /*--------------------------------------------------------------+ | TimeMSToHMSString() - change milliseconds into a time string | +--------------------------------------------------------------*/ void FAR PASCAL TimeMSToHMSString (DWORD dwMS, LPSTR lpTime) { DWORD dwTotalSecs; LONG lHundredths; WORD wSecs; WORD wMins; WORD wHours; /* convert to number of seconds */ dwTotalSecs = dwMS / 1000; /* keep the remainder part */ lHundredths = (dwMS - (dwTotalSecs * 1000)) / 10; /* break down into other components */ wHours = (WORD)(dwTotalSecs / 3600); // get # Hours dwTotalSecs -= (wHours * 3600); wMins = (WORD)(dwTotalSecs / 60); // get # Mins dwTotalSecs -= (wMins * 60); wSecs = (WORD)dwTotalSecs; // what's left is # seconds /* build the string */ wsprintf((char far *)lpTime, "%02u:%02u:%02u.%02lu", wHours, wMins, wSecs, lHundredths); } /*--------------------------------------------------------------+ | TimeHMSStringToMS() - change Time string to milliseconds | | returns dwMilliseconds or -1 if error | +--------------------------------------------------------------*/ LONG NEAR PASCAL TimeHMSStringToMS (LPSTR lpsz) { char achTime[12]; // buffer for time string (input) DWORD dwMSecs; // total MSecs for this thing */ char *pDelim; // pointer to next delimeter char *p; // general pointer DWORD dwHours = 0; // # of hours DWORD dwMins = 0; // # of minutes DWORD dwSecs = 0; // # of seconds UINT wHundredths = 0; // # hundredths _fstrncpy(achTime, lpsz, sizeof (achTime)); if (achTime[0] == '\0') return -1; // bad char so error out /* rip through the whole string and look for illegal chars */ for (p = achTime; *p ; p++){ if (!isdigit(*p) && *p != '.' && *p != ':') return -1; // bad char so error out } /* go find the hundredths portion if it exists */ pDelim = strchr(achTime, '.'); if (pDelim && *pDelim){ p = strrchr(achTime, '.'); if (pDelim != p) { return -1; // string has > 1 '.', return error } p++; // move up past delim if (strlen(p) > 2) { *(p+2) = '\0'; // knock off all but hundredths } wHundredths = atoi(p); // get the fractional part *pDelim = '\0'; // null out this terminator } /* try and find seconds */ pDelim = strrchr(achTime, ':'); // get last ':' if (*pDelim) { p = (pDelim+1); } else { // no colon - assume just seconds in string p = achTime; } dwSecs = atoi(p); if (*pDelim) { *pDelim = '\0'; /* go and get the minutes part */ pDelim = strrchr(achTime, ':'); if (*pDelim) { p = (pDelim + 1); } else { // no more colons - assume remainder is just minutes p = achTime; } dwMins = atoi(p); if (*pDelim) { *pDelim = '\0'; /* get the hours */ p = achTime; dwHours = atoi(p); } } /* now we've got the hours, minutes, seconds and any */ /* fractional part. Time to build up the total time */ dwSecs += (dwHours * 3600); // add in hours worth of seconds dwSecs += (dwMins * 60); // add in minutes worth of seconds dwMSecs = (dwSecs * 1000L); dwMSecs += (wHundredths * 10L); /* now we've got the total number of milliseconds */ return dwMSecs; } /* * MCIDeviceClose * This routine closes the open MCI device. */ void MCIDeviceClose (void) { mciSendString( "close mciframes", NULL, 0, NULL ); } /* * MCIDeviceOpen * This routine opens the mci device for use, and sets the * time format to milliseconds. * Return FALSE on error; */ BOOL MCIDeviceOpen (LPSTR lpDevName) { char ach[160]; DWORD dwMCIError; wsprintf( ach, "open %s shareable wait alias mciframes", (LPSTR) lpDevName); dwMCIError = mciSendString( ach, NULL, 0, NULL ); if( dwMCIError ) { return(FALSE); } dwMCIError = mciSendString( "set mciframes time format milliseconds", NULL, 0, NULL ); if( dwMCIError ) { MCIDeviceClose(); return(FALSE); } return ( TRUE ); } /* * MCIDeviceGetPosition * Stores the current device position in milliseconds in lpdwPos. * Returns TRUE on success, FALSE if error. */ BOOL FAR PASCAL MCIDeviceGetPosition (LPDWORD lpdwPos) { char ach[80]; DWORD dwMCIError; dwMCIError = mciSendString( "status mciframes position wait", ach, sizeof(ach), NULL ); if( dwMCIError ) { *lpdwPos = 0L; return FALSE; } *lpdwPos = atol( ach ); return TRUE; } // --- audio streaming ------------------------------------------------ // the ShowLevel dialog streams data in from the input and // shows the current volume. // buffers into which sound data is recorded #define NUM_LEVEL_BUFFERS 2 // the buffer size is calculated to be about 1/20 sec #define UPDATES_PER_SEC 20 /* * we save all our data in one of these, and write a pointer to it * into the dialog DWL_USER field. */ typedef struct _LevelStreamData { LPWAVEHDR alpWave[NUM_LEVEL_BUFFERS]; PCMWAVEFORMAT FAR * pwf; HWAVEIN hwav; int buffersize; } LEVELSTREAMDATA, FAR * PLEVELSTREAMDATA; //open the wave-device in the given format, queue all the buffers and //start data streaming. Save the wavein device to the dialog DWL_USER window //data area so we can close it on dialog dismissal. BOOL OpenStream(HWND hDlg, PCMWAVEFORMAT FAR * pwf) { PLEVELSTREAMDATA pInfo; int i; pInfo = (PLEVELSTREAMDATA) GlobalLock(GlobalAlloc(GHND, sizeof(LEVELSTREAMDATA))); if (pInfo == NULL) { return(FALSE); } // complete remaining areas of wf pwf->wf.wFormatTag = WAVE_FORMAT_PCM; pwf->wf.nBlockAlign = pwf->wf.nChannels * pwf->wBitsPerSample / 8; pwf->wf.nAvgBytesPerSec = pwf->wf.nSamplesPerSec * pwf->wf.nBlockAlign; // save for later use pInfo->pwf = pwf; // buffer size a fixed fraction of a second pInfo->buffersize = pwf->wf.nAvgBytesPerSec/UPDATES_PER_SEC; pInfo->hwav = NULL; if (waveInOpen( &pInfo->hwav, WAVE_MAPPER, (LPWAVEFORMATEX)pwf, (DWORD) hDlg, // callback via MM_WIM_ messages to dialogproc 0, CALLBACK_WINDOW)) { SetWindowLong(hDlg, DWL_USER, 0); return(FALSE); } // store the info structure in the dialog, so that even if we fail // on this routine we will clean up correctly SetWindowLong(hDlg, DWL_USER, (long) pInfo); // set all the wave headers to null (for cleanup if error) for (i = 0; i < NUM_LEVEL_BUFFERS; i++) { pInfo->alpWave[i] = NULL; } // alloc, prepare and add all the buffers for (i = 0; i < NUM_LEVEL_BUFFERS; i++) { pInfo->alpWave[i] = GlobalLock(GlobalAlloc(GMEM_MOVEABLE|GMEM_SHARE, sizeof(WAVEHDR) + pInfo->buffersize)); if (pInfo->alpWave[i] == NULL) { return(FALSE); } pInfo->alpWave[i]->lpData = (LPBYTE) (pInfo->alpWave[i] + 1); pInfo->alpWave[i]->dwBufferLength = pInfo->buffersize; pInfo->alpWave[i]->dwBytesRecorded = 0; pInfo->alpWave[i]->dwUser = 0; pInfo->alpWave[i]->dwFlags = 0; pInfo->alpWave[i]->dwLoops = 0; if (waveInPrepareHeader(pInfo->hwav, pInfo->alpWave[i], sizeof(WAVEHDR))) { return(FALSE); } if (waveInAddBuffer(pInfo->hwav, pInfo->alpWave[i], sizeof(WAVEHDR))) { return(FALSE); } } waveInStart(pInfo->hwav); return(TRUE); } // terminate the data streaming on a wavein device associated with a // dialog, and clean up the buffers allocated void CloseStream(HWND hDlg) { PLEVELSTREAMDATA pInfo; int i; // pick up our info from the dialog pInfo = (PLEVELSTREAMDATA) GetWindowLong(hDlg, DWL_USER); if ((pInfo == NULL) || (pInfo->hwav == NULL)) { return; } // stop streaming data waveInStop(pInfo->hwav); // release all buffers waveInReset(pInfo->hwav); // unlock and free buffers for (i = 0; i < NUM_LEVEL_BUFFERS; i++) { if (pInfo->alpWave[i]) { waveInUnprepareHeader(pInfo->hwav, pInfo->alpWave[i], sizeof(WAVEHDR)); GlobalFree(GlobalHandle(pInfo->alpWave[i])); pInfo->alpWave[i] = NULL; } } waveInClose(pInfo->hwav); GlobalFree(GlobalHandle(pInfo)); SetWindowLong(hDlg, DWL_USER, 0); } // we have received a block of data. work out the level(s) and send to // the appropriate control on the dialog, and then requeue the buffer. // return FALSE if any error occurs, otherwise TRUE BOOL StreamData(HWND hDlg, HWAVEIN hwav, LPWAVEHDR pHdr) { PLEVELSTREAMDATA pInfo; int n = 0; int LevelLeft = 0, LevelRight = 0; int i, l; // pick up our info from the dialog pInfo = (PLEVELSTREAMDATA) GetWindowLong(hDlg, DWL_USER); if ((pInfo == NULL) || (pInfo->hwav != hwav)) { return FALSE; } // go through all samples in buffer looking for maximum absolute level while (n < pInfo->buffersize) { /* * volumes go above and below the mean level - we are * interested in the absolute volume * 8 bit samples are in the range 0..255 * 16-bit samples are in the range -32768..+32767 */ // skip the first byte if 16-bit // and adjust to be in range -127..+128 if (pInfo->pwf->wBitsPerSample == 16) { n++; i = (int) (signed char) pHdr->lpData[n]; } else { i = (int) ((unsigned char) pHdr->lpData[n]) - 128; } // skip past the byte we've picked up n++; // take absolute volume level if (i < 0) { i = -i; } // convert to percentage l = (i*100) / 128; // compare against current max if (LevelLeft < l) { LevelLeft = l; } // if stereo, repeat for right channel if (pInfo->pwf->wf.nChannels == 2) { // skip the first byte if 16-bit if (pInfo->pwf->wBitsPerSample == 16) { n++; i = (int) (signed char) pHdr->lpData[n]; } else { i = (int) ((unsigned char) pHdr->lpData[n]) - 128; } // skip past the byte we've picked up n++; // take absolute volume level if (i < 0) { i = -i; } // convert to percentage l = (i*100) / 128; // compare against current max if (LevelRight < l) { LevelRight = l; } } } // put the buffer back on the queue if (waveInAddBuffer(pInfo->hwav, pHdr, sizeof(WAVEHDR))) { return(FALSE); } // send new level to dialog control SendDlgItemMessage(hDlg, IDRL_LEVEL1, WMRL_SETLEVEL, 0, LevelLeft); if (pInfo->pwf->wf.nChannels == 2) { SendDlgItemMessage(hDlg, IDRL_LEVEL2, WMRL_SETLEVEL, 0, LevelRight); } return(TRUE); } // --- dialog procs ----------------------------------------------------- // // AboutProc: About Dialog Box Procedure // int FAR PASCAL AboutProc(HWND hDlg, UINT Message, UINT wParam, LONG lParam) { switch (Message) { case WM_INITDIALOG : return TRUE ; case WM_COMMAND : switch (GET_WM_COMMAND_ID(wParam, lParam)) { case IDOK : EndDialog(hDlg, TRUE) ; return TRUE ; case IDCANCEL : EndDialog(hDlg, FALSE) ; return TRUE ; } break ; } return FALSE ; } /* * dialog proc for IDD_RECLVLMONO and IDD_RECLVLSTEREO - show current * volume level */ int FAR PASCAL ShowLevelProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam) { switch(message) { case WM_INITDIALOG: if (!OpenStream(hDlg, (PCMWAVEFORMAT FAR *) lParam)) { MessageBoxID(IDS_ERR_ACCESS_SOUNDDRIVER, MB_OK|MB_ICONSTOP); EndDialog(hDlg, FALSE); } return(TRUE); case WM_COMMAND: switch(GET_WM_COMMAND_ID(wParam, lParam)) { case IDOK: case IDCANCEL: CloseStream(hDlg); EndDialog(hDlg, TRUE); return(TRUE); } break; case MM_WIM_DATA: if (!StreamData(hDlg, (HWAVEIN)wParam, (LPWAVEHDR)lParam)) { MessageBoxID(IDS_ERR_ACCESS_SOUNDDRIVER, MB_OK|MB_ICONSTOP); CloseStream(hDlg); EndDialog(hDlg, FALSE); } return(TRUE); } return FALSE; } // // AudioFormatProc: Audio Format Setting Dialog Box Procedure // int FAR PASCAL AudioFormatProc(HWND hDlg, UINT Message, UINT wParam, LONG lParam) { static int nChannels ; static UINT wSample ; static DWORD dwFrequency ; switch (Message) { case WM_INITDIALOG : nChannels = IDD_ChannelIDs + glpwfex->nChannels ; CheckRadioButton(hDlg, IDD_ChannelMono, IDD_ChannelStereo, nChannels) ; wSample = IDD_SampleIDs + glpwfex->wBitsPerSample / 8 ; CheckRadioButton(hDlg, IDD_Sample8Bit, IDD_Sample16Bit, wSample) ; dwFrequency = IDD_FreqIDs + glpwfex->nSamplesPerSec / 11025 ; CheckRadioButton(hDlg, IDD_Freq11kHz, IDD_Freq44kHz, (UINT)dwFrequency) ; return TRUE ; case WM_COMMAND : switch (GET_WM_COMMAND_ID(wParam, lParam)) { case IDD_SetLevel: { // get the current data into a PCMWAVEFORMAT struct, // and run the ShowLevel dialog PCMWAVEFORMAT wf; UINT dlgid; if (IsDlgButtonChecked(hDlg, IDD_ChannelMono)) { wf.wf.nChannels = 1; dlgid = IDD_RECLVLMONO; } else { wf.wf.nChannels = 2; dlgid = IDD_RECLVLSTEREO; } if (IsDlgButtonChecked(hDlg, IDD_Sample8Bit)) { wf.wBitsPerSample = 8; } else { wf.wBitsPerSample = 16; } if (IsDlgButtonChecked(hDlg, IDD_Freq11kHz)) { wf.wf.nSamplesPerSec = 11025 ; } else if (IsDlgButtonChecked(hDlg, IDD_Freq22kHz)) { wf.wf.nSamplesPerSec = 22050 ; } else { wf.wf.nSamplesPerSec = 44100 ; } DoDialog( hDlg, dlgid, ShowLevelProc, (LPARAM) &wf); break; } case IDOK : if (IsDlgButtonChecked(hDlg, IDD_ChannelMono)) nChannels = 1 ; else if (IsDlgButtonChecked(hDlg, IDD_ChannelStereo)) nChannels = 2 ; else { MessageBeep(MB_ICONEXCLAMATION) ; return FALSE ; } if (IsDlgButtonChecked(hDlg, IDD_Sample8Bit)) wSample = 8 ; else if (IsDlgButtonChecked(hDlg, IDD_Sample16Bit)) wSample = 16 ; else { MessageBeep(MB_ICONEXCLAMATION) ; return FALSE ; } if (IsDlgButtonChecked(hDlg, IDD_Freq11kHz)) dwFrequency = 11025 ; else if (IsDlgButtonChecked(hDlg, IDD_Freq22kHz)) dwFrequency = 22050 ; else if (IsDlgButtonChecked(hDlg, IDD_Freq44kHz)) dwFrequency = 44100 ; else { MessageBeep(MB_ICONEXCLAMATION) ; return FALSE ; } // All the entries verfied OK -- save them now glpwfex->nChannels = nChannels ; glpwfex->wBitsPerSample = wSample ; glpwfex->nSamplesPerSec = dwFrequency ; glpwfex->nBlockAlign = glpwfex->nChannels * (glpwfex->wBitsPerSample / 8) ; glpwfex->nAvgBytesPerSec = (long) glpwfex->nSamplesPerSec * glpwfex->nBlockAlign ; glpwfex->cbSize = 0 ; glpwfex->wFormatTag = WAVE_FORMAT_PCM ; EndDialog(hDlg, TRUE) ; return TRUE ; case IDCANCEL : EndDialog(hDlg, FALSE) ; return TRUE ; } break ; } return FALSE ; } // // AllocCapFileProc: Capture file Space Allocation Dialog Box Procedure // int FAR PASCAL AllocCapFileProc(HWND hDlg, UINT Message, UINT wParam, LONG lParam) { static UINT wFreeMBs = 0 ; switch (Message) { case WM_INITDIALOG : { int fh ; long lFileSize = 0 ; long lFreeSpace ; char achCapFile[_MAX_PATH] ; // Get current capture file name and measure its size capFileGetCaptureFile(ghWndCap, achCapFile, sizeof(achCapFile)) ; if ((fh = _open(achCapFile, _O_RDONLY)) != -1) { if ((lFileSize = _lseek(fh, 0L, SEEK_END)) == -1L) { MessageBoxID(IDS_ERR_SIZECAPFILE, #ifdef BIDI MB_RTL_READING | #endif MB_OK | MB_ICONEXCLAMATION) ; lFileSize = 0 ; } _close(fh) ; } // Get free disk space and add current capture file size to that. // Convert the available space to MBs. if ((lFreeSpace = GetFreeDiskSpace(achCapFile)) != -1L) { lFreeSpace += lFileSize ; wFreeMBs = (UINT)(lFreeSpace / ONEMEG) ; SetDlgItemInt(hDlg, IDD_SetCapFileFree, wFreeMBs, TRUE) ; } else { EnableWindow(GetDlgItem(hDlg, IDD_SetCapFileFree), FALSE); } SetDlgItemInt(hDlg, IDD_SetCapFileSize, gwCapFileSize, TRUE) ; return TRUE ; } case WM_COMMAND : switch (GET_WM_COMMAND_ID(wParam, lParam)) { case IDOK : { int iCapFileSize ; iCapFileSize = (int) GetDlgItemInt(hDlg, IDD_SetCapFileSize, NULL, TRUE) ; if (iCapFileSize <= 0 || (UINT)iCapFileSize > wFreeMBs) { // You are asking for more than we have !! Sorry, ... SetDlgItemInt(hDlg, IDD_SetCapFileSize, iCapFileSize, TRUE) ; SetFocus(GetDlgItem(hDlg, IDD_SetCapFileSize)) ; MessageBeep(MB_ICONEXCLAMATION) ; return FALSE ; } gwCapFileSize = iCapFileSize ; EndDialog(hDlg, TRUE) ; return TRUE ; } case IDCANCEL : EndDialog(hDlg, FALSE) ; return TRUE ; case IDD_SetCapFileSize: { long l; BOOL bchanged; char achBuffer[21]; // check that entered size is a valid number GetDlgItemText(hDlg, IDD_SetCapFileSize, achBuffer, sizeof(achBuffer)); l = atol(achBuffer); bchanged = FALSE; if (l < 1) { l = 1; bchanged = TRUE; } else if ((UINT)l > wFreeMBs) { l = wFreeMBs; bchanged = TRUE; } else { // make sure there are no non-digit chars // atol() will ignore trailing non-digit characters int c = 0; while (achBuffer[c]) { if (IsCharAlpha(achBuffer[c]) || !IsCharAlphaNumeric(achBuffer[c])) { // string contains non-digit chars - reset l = 1; bchanged = TRUE; break; } c++; } } if (bchanged) { wsprintf(achBuffer, "%ld", l); SetDlgItemText(hDlg, IDD_SetCapFileSize, achBuffer); } break; } } break ; } return FALSE ; } // // MakePaletteProc: Palette Details Dialog Box Procedure // BOOL CALLBACK MakePaletteProc(HWND hDlg, UINT Message, UINT wParam, LONG lParam) { switch (Message) { case WM_INITDIALOG : SetDlgItemInt(hDlg, IDD_MakePalColors, gwPalColors, FALSE) ; SetDlgItemInt(hDlg, IDD_MakePalFrames, gwPalFrames, FALSE) ; return TRUE ; case WM_COMMAND : switch (GET_WM_COMMAND_ID(wParam, lParam)) { case IDOK : { int iColors ; int iFrames ; iColors = (int) GetDlgItemInt(hDlg, IDD_MakePalColors, NULL, TRUE) ; if (! (iColors > 0 && iColors <= 236 || iColors == 256)) { // invalid number of palette colors SetDlgItemInt(hDlg, IDD_MakePalColors, iColors, TRUE) ; SetFocus(GetDlgItem(hDlg, IDD_MakePalColors)) ; MessageBeep(MB_ICONEXCLAMATION) ; return FALSE ; } iFrames = (int) GetDlgItemInt(hDlg, IDD_MakePalFrames, NULL, TRUE) ; if (iFrames <= 0 || iFrames > 10000) { // no frame or way t-o-o many frames !!! SetDlgItemInt(hDlg, IDD_MakePalFrames, iFrames, TRUE) ; SetFocus(GetDlgItem(hDlg, IDD_MakePalFrames)) ; MessageBeep(MB_ICONEXCLAMATION) ; return FALSE ; } gwPalColors = iColors ; gwPalFrames = iFrames ; EndDialog(hDlg, TRUE) ; return TRUE ; } case IDCANCEL : EndDialog(hDlg, FALSE) ; return TRUE ; } break ; } return FALSE ; } // // CapSetUpProc: Capture SetUp Details Dialog Box Procedure // int FAR PASCAL CapSetUpProc(HWND hDlg, UINT Message, UINT wParam, LONG lParam) { static char achBuffer[21] ; UINT fValue; switch (Message) { case WM_INITDIALOG : { // Convert from MicroSecPerFrame to FPS -- that's easier !! MicroSecToStringRate(achBuffer, gCapParms.dwRequestMicroSecPerFrame); SetDlgItemText(hDlg, IDD_FrameRateData, achBuffer); // If time limit isn't enabled, disable the time data part CheckDlgButton(hDlg, IDD_TimeLimitFlag, (fValue = gCapParms.fLimitEnabled)) ; EnableWindow(GetDlgItem(hDlg, IDD_SecondsText), fValue) ; EnableWindow(GetDlgItem(hDlg, IDD_SecondsData), fValue) ; EnableWindow(GetDlgItem(hDlg, IDD_SecondsArrow), fValue); SetDlgItemInt(hDlg, IDD_SecondsData, gCapParms.wTimeLimit, FALSE) ; // disable audio buttons if no audio hardware { CAPSTATUS cs; capGetStatus(ghWndCap, &cs, sizeof(cs)); EnableWindow(GetDlgItem(hDlg, IDD_CapAudioFlag), cs.fAudioHardware); EnableWindow(GetDlgItem(hDlg, IDD_AudioConfig), cs.fAudioHardware); CheckDlgButton(hDlg, IDD_CapAudioFlag, gCapParms.fCaptureAudio); } /* * ==I think== the logic here is like this * Capture To Memory means optimise for lots of buffers and * hence don't worry about where they are- so don't insist on * DOS memory. * Capture to disk means optimise throughput to the disk, and * hence get buffers in dos memory at all costs. * * The flag makes no difference on Win32 since the memory is the * same (GlobalAlloc). */ CheckRadioButton(hDlg, IDD_CaptureToDisk, IDD_CaptureToMemory, (gCapParms.fUsingDOSMemory)? IDD_CaptureToDisk : IDD_CaptureToMemory); // Find out how many MCI devices can source video if (CountMCIDevices(MCI_DEVTYPE_VCR) + CountMCIDevices(MCI_DEVTYPE_VIDEODISC) == 0) { // if no VCRs or Videodiscs, disable the controls EnableWindow(GetDlgItem(hDlg, IDD_MCIControlFlag), FALSE); EnableWindow(GetDlgItem(hDlg, IDD_MCISetup), FALSE); } else { EnableWindow(GetDlgItem(hDlg, IDD_MCIControlFlag), TRUE); // if MCI Control is selected, enable the setup button CheckDlgButton(hDlg, IDD_MCIControlFlag, gCapParms.fMCIControl); EnableWindow(GetDlgItem(hDlg, IDD_MCISetup), gCapParms.fMCIControl); } // place the dialog to avoid covering the capture window SmartWindowPosition(hDlg, ghWndCap); return TRUE ; } case WM_COMMAND : switch (GET_WM_COMMAND_ID(wParam, lParam)) { case IDD_TimeLimitFlag : // If this flag changes, en/dis-able time limit data part fValue = IsDlgButtonChecked(hDlg, IDD_TimeLimitFlag) ; EnableWindow(GetDlgItem(hDlg, IDD_SecondsText), fValue) ; EnableWindow(GetDlgItem(hDlg, IDD_SecondsData), fValue) ; EnableWindow(GetDlgItem(hDlg, IDD_SecondsArrow), fValue); return TRUE ; case IDD_MCIControlFlag : // If this flag changes, en/dis-able MCI Setup button fValue = IsDlgButtonChecked(hDlg, IDD_MCIControlFlag) ; EnableWindow(GetDlgItem(hDlg, IDD_MCISetup), fValue) ; return TRUE ; case IDD_CapAudioFlag: fValue = IsDlgButtonChecked(hDlg, IDD_CapAudioFlag) ; EnableWindow(GetDlgItem(hDlg, IDD_AudioConfig), fValue) ; return TRUE ; case IDD_FrameRateData: // get the requested frame rate and check it against bounds if (GET_WM_COMMAND_CMD(wParam, lParam) == EN_KILLFOCUS) { long l, new_l; GetDlgItemText(hDlg, IDD_FrameRateData, achBuffer, sizeof(achBuffer)); new_l = l = StringRateToMicroSec(achBuffer); // note that the MAX rate is SMALL! hence min if (l == 0) { new_l = DEF_CAPTURE_RATE; } else if (l < MAX_CAPTURE_RATE) { new_l = MAX_CAPTURE_RATE; } else if (l > MIN_CAPTURE_RATE) { new_l = MIN_CAPTURE_RATE; } if (l != new_l) { MicroSecToStringRate(achBuffer, new_l); SetDlgItemText(hDlg, IDD_FrameRateData, achBuffer); } } break; case IDD_SecondsData: { long l, new_l; // get requested time limit and check validity GetDlgItemText(hDlg, IDD_SecondsData, achBuffer, sizeof(achBuffer)); new_l = l = atol(achBuffer); if (l < 1) { new_l = 1; } else if (l > 9999) { new_l = 9999; } else { // make sure there are no non-digit chars // atol() will ignore trailing non-digit characters int c = 0; while (achBuffer[c]) { if (IsCharAlpha(achBuffer[c]) || !IsCharAlphaNumeric(achBuffer[c])) { // string contains non-digit chars - reset new_l = 1; break; } c++; } } if (new_l != l) { wsprintf(achBuffer, "%ld", new_l); SetDlgItemText(hDlg, IDD_SecondsData, achBuffer); // select the changed text so that if you delete the // '1' and then insert '10' you get 10 not 110 SendDlgItemMessage(hDlg, IDD_SecondsData, EM_SETSEL, 0, -1); } break; } // show audio format setup dialog case IDD_AudioConfig: // rather than duplicate lots of code from the // main vidcap winproc, lets just ask it to show the dlg... SendMessage(ghWndMain, WM_COMMAND, GET_WM_COMMAND_MPS(IDM_O_AUDIOFORMAT, NULL, 0)); break; // show MCI step control dialog case IDD_MCISetup: DoDialog(hDlg, IDD_MCISETUP, MCISetupProc, 0); break; // show video format setup dialog case IDD_VideoConfig: // rather than duplicate lots of code from the // main vidcap winproc, lets just ask it to show the dlg... SendMessage(ghWndMain, WM_COMMAND, GET_WM_COMMAND_MPS(IDM_O_VIDEOFORMAT, NULL, 0)); break; // show the compressor selector dialog case IDD_CompConfig: capDlgVideoCompression(ghWndCap); break; case IDOK : { gCapParms.fCaptureAudio = IsDlgButtonChecked(hDlg, IDD_CapAudioFlag) ; gCapParms.fMCIControl = IsDlgButtonChecked(hDlg, IDD_MCIControlFlag); gCapParms.fLimitEnabled = IsDlgButtonChecked(hDlg, IDD_TimeLimitFlag) ; gCapParms.fUsingDOSMemory = IsDlgButtonChecked(hDlg, IDD_CaptureToDisk); GetDlgItemText(hDlg, IDD_FrameRateData, achBuffer, sizeof(achBuffer)); gCapParms.dwRequestMicroSecPerFrame = StringRateToMicroSec(achBuffer); if (gCapParms.dwRequestMicroSecPerFrame == 0) { gCapParms.dwRequestMicroSecPerFrame = DEF_CAPTURE_RATE; } GetDlgItemText(hDlg, IDD_SecondsData, achBuffer, sizeof(achBuffer)); if (gCapParms.fLimitEnabled) { gCapParms.wTimeLimit = (UINT) atol(achBuffer); } EndDialog(hDlg, TRUE) ; return TRUE ; } case IDCANCEL : EndDialog(hDlg, FALSE) ; return TRUE ; } break ; case WM_VSCROLL: // message from one of the arrow spinbuttons { UINT id; id = GetDlgCtrlID(GET_WM_COMMAND_HWND(wParam, lParam)); if (id == IDD_FrameRateArrow) { // format n.nnn MilliSecVarArrowEditChange( GetDlgItem(hDlg, IDD_FrameRateData), GET_WM_VSCROLL_CODE(wParam, lParam), 1, 100, 1); } else { // simple integer format ArrowEditChange( GetDlgItem(hDlg, IDD_SecondsData), GET_WM_VSCROLL_CODE(wParam, lParam), 1, 30000); } break; } } return FALSE ; } /* * preferences dialog - sets global options about background colour, * presence of toolbar, status bar etc */ int FAR PASCAL PrefsDlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam) { DWORD indexsz; switch(message) { case WM_INITDIALOG: CheckDlgButton(hDlg, IDD_PrefsStatus, gbStatusBar); CheckDlgButton(hDlg, IDD_PrefsToolbar, gbToolBar); CheckDlgButton(hDlg, IDD_PrefsCentre, gbCentre); CheckRadioButton(hDlg, IDD_PrefsDefBackground, IDD_PrefsBlack, gBackColour); CheckRadioButton(hDlg, IDD_PrefsSmallIndex, IDD_PrefsBigIndex, (gCapParms.dwIndexSize == CAP_LARGE_INDEX) ? IDD_PrefsBigIndex : IDD_PrefsSmallIndex); return(TRUE); case WM_COMMAND: switch(GET_WM_COMMAND_ID(wParam, lParam)) { case IDCANCEL: EndDialog(hDlg, FALSE); return(TRUE); case IDOK: gbStatusBar = IsDlgButtonChecked(hDlg, IDD_PrefsStatus); gbToolBar = IsDlgButtonChecked(hDlg, IDD_PrefsToolbar); gbCentre = IsDlgButtonChecked(hDlg, IDD_PrefsCentre); if (IsDlgButtonChecked(hDlg, IDD_PrefsDefBackground)) { gBackColour = IDD_PrefsDefBackground; } else if (IsDlgButtonChecked(hDlg, IDD_PrefsLtGrey)) { gBackColour = IDD_PrefsLtGrey; } else if (IsDlgButtonChecked(hDlg, IDD_PrefsDkGrey)) { gBackColour = IDD_PrefsDkGrey; } else { gBackColour = IDD_PrefsBlack; } if (IsDlgButtonChecked(hDlg, IDD_PrefsSmallIndex)) { indexsz = CAP_SMALL_INDEX; } else { indexsz = CAP_LARGE_INDEX; } if (indexsz != gCapParms.dwIndexSize) { gCapParms.dwIndexSize = indexsz; capCaptureSetSetup(ghWndCap, &gCapParms, sizeof(gCapParms)); } EndDialog(hDlg, TRUE); return(TRUE); } break; } return FALSE; } int FAR PASCAL NoHardwareDlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam) { static HBRUSH hbr; switch(message) { case WM_INITDIALOG: // lParam contains the argument to DialogBoxParam which is the // reason text SetDlgItemText(hDlg, IDD_FailReason, (LPSTR) lParam); hbr = CreateSolidBrush(GetSysColor(COLOR_WINDOW)); return TRUE; case WM_DESTROY: DeleteObject(hbr); #ifdef _WIN32 case WM_CTLCOLORSTATIC: #else case WM_CTLCOLOR: #endif if (GET_WM_CTLCOLOR_HWND(wParam, lParam, message) == GetDlgItem(hDlg, IDD_FailReason)) { HDC hdc; hdc = GET_WM_CTLCOLOR_HDC(wParam, lParam, message); SetTextColor(hdc, RGB(0xff, 0, 0)); SetBkColor(hdc, GetSysColor(COLOR_WINDOW)); // in order to ensure that the text colour we have chosen for // this control is used, we need to actually return a brush. // for win31, we also need to align the brush #ifndef _WIN32 { POINT pt; pt.x = 0; pt.y = 0; ClientToScreen(hDlg, &pt); UnrealizeObject(hbr); SetBrushOrg(hdc, pt.x, pt.y); } #endif return((int) hbr); } break; case WM_COMMAND: switch(GET_WM_COMMAND_ID(wParam, lParam)) { case IDOK: EndDialog(hDlg, TRUE); return(TRUE); case IDCANCEL: EndDialog(hDlg, FALSE); return(TRUE); } break; } return(FALSE); } //capture selected single frames long FAR PASCAL CapFramesProc(HWND hDlg, UINT Message, WPARAM wParam, LPARAM lParam) { char ach[MAX_PATH*2]; char achName[MAX_PATH]; static BOOL bFirst; static int iFrames; switch(Message) { case WM_INITDIALOG: // write out the prompt message including the capture file name capFileGetCaptureFile(ghWndCap, achName, sizeof(achName)); wsprintf(ach, tmpString(IDS_PROMPT_CAPFRAMES), achName); SetDlgItemText(hDlg, IDD_CapMessage, ach); bFirst = TRUE; //move dialog so it doesn't obscure the capture window SmartWindowPosition(hDlg, ghWndCap); return(TRUE); case WM_COMMAND: switch(GET_WM_COMMAND_ID(wParam, lParam)) { case IDCANCEL: if (!bFirst) { capCaptureSingleFrameClose(ghWndCap); EndDialog(hDlg, TRUE); } else { EndDialog(hDlg, FALSE); } return(TRUE); case IDOK: if (bFirst) { bFirst = FALSE; iFrames = 0; capCaptureSingleFrameOpen(ghWndCap); SetDlgItemText(hDlg, IDCANCEL, tmpString(IDS_CAP_CLOSE)); } capCaptureSingleFrame(ghWndCap); iFrames++; wsprintf(ach, tmpString(IDS_STATUS_NUMFRAMES), iFrames); SetDlgItemText(hDlg, IDD_CapNumFrames, ach); return(TRUE); } break; } return(FALSE); } // enumerate all the MCI devices of a particular type and add them and // their descriptions to a combo box list. // void AddMCIDeviceNames(UINT wDeviceType, HWND hwndCB) { int nIndex; MCI_OPEN_PARMS mciOp; MCI_INFO_PARMS mciIp; MCI_SYSINFO_PARMS mciSIP; MCI_GENERIC_PARMS mciGp; char buf[MAXPNAMELEN + 128]; // Contains eg. Name\t\tVideodisc1 char buf2 [64]; int maxdevs; DWORD dwRet; // To get the user readable names of the devices, we // must open all appropriate devices, and then get info. // MCI Open structure mciOp.dwCallback = 0; mciOp.lpstrElementName = NULL; mciOp.lpstrAlias = NULL; // MCI Info structure mciIp.dwCallback = 0; mciIp.lpstrReturn = (LPSTR) buf; mciIp.dwRetSize = MAXPNAMELEN - 1; // MCI SysInfo structure mciSIP.dwCallback = 0; mciSIP.lpstrReturn = (LPSTR) buf2; mciSIP.dwRetSize = sizeof (buf2); mciSIP.wDeviceType = wDeviceType; // MCI Generic structure mciGp.dwCallback = 0; // Load the combobox with the product info name, followed by // a comma, then a space, and then the mci device name. This allows a // single alphabetized list to be kept. // eg. // Pioneer Laserdisc, videodisc1 maxdevs = CountMCIDevices((UINT)mciSIP.wDeviceType); for (nIndex = 0; nIndex < maxdevs; nIndex++) { // Get the system name eg. Videodisc1 mciSIP.dwNumber = nIndex + 1; dwRet = mciSendCommand (0, MCI_SYSINFO, MCI_SYSINFO_NAME, (DWORD) (LPVOID) &mciSIP); mciOp.lpstrDeviceType = (LPSTR) MAKELONG (wDeviceType, nIndex); if (!(dwRet = mciSendCommand(0, MCI_OPEN, MCI_WAIT | MCI_OPEN_TYPE | MCI_OPEN_TYPE_ID | MCI_OPEN_SHAREABLE, (DWORD) (LPVOID) &mciOp))) { if (!(dwRet = mciSendCommand (mciOp.wDeviceID, MCI_INFO, MCI_WAIT | MCI_INFO_PRODUCT, (DWORD) (LPVOID) &mciIp))) { lstrcat (buf, ", "); // append the delimiter lstrcat (buf, buf2); // append the system name // Whew, finally put it in the listbox SendMessage( hwndCB, CB_ADDSTRING, 0, (LONG)(LPSTR) buf); } //endif got INFO // Close it now mciSendCommand (mciOp.wDeviceID, MCI_CLOSE, MCI_WAIT, (DWORD) (LPVOID) &mciGp); } // endif OPEN } // endif for all devices of this type } // // dialog proc to select MCI device and parameters, including start, // stop times. BOOL FAR PASCAL MCISetupProc(HWND hwnd, unsigned msg, UINT wParam, LONG lParam) { HWND hwndCB; DWORD dw; char buf[MAXPNAMELEN]; BOOL f; int j; static int nLastCBIndex = 0; static DWORD tdwMCIStartTime; static DWORD tdwMCIStopTime; switch (msg) { case WM_INITDIALOG: CheckRadioButton(hwnd, IDD_MCI_PLAY, IDD_MCI_STEP, gCapParms.fStepMCIDevice ? IDD_MCI_STEP : IDD_MCI_PLAY ); // enable averaging options only in step mode EnableWindow (GetDlgItem (hwnd, IDD_MCI_AVERAGE_2X), gCapParms.fStepMCIDevice); EnableWindow (GetDlgItem (hwnd, IDD_MCI_AVERAGE_FR), gCapParms.fStepMCIDevice); SetDlgItemInt(hwnd, IDD_MCI_AVERAGE_FR, gCapParms.wStepCaptureAverageFrames, FALSE); CheckDlgButton (hwnd, IDD_MCI_AVERAGE_2X, gCapParms.fStepCaptureAt2x); // save current dialog time settings tdwMCIStartTime = gCapParms.dwMCIStartTime; tdwMCIStopTime = gCapParms.dwMCIStopTime; TimeMSToHMSString (gCapParms.dwMCIStartTime, buf); SetDlgItemText (hwnd, IDD_MCI_STARTTIME, buf); TimeMSToHMSString (gCapParms.dwMCIStopTime, buf); SetDlgItemText (hwnd, IDD_MCI_STOPTIME, buf); // fill combo box with list of MCI devices hwndCB = GetDlgItem( hwnd, IDD_MCI_SOURCE ); AddMCIDeviceNames(MCI_DEVTYPE_VIDEODISC, hwndCB); AddMCIDeviceNames(MCI_DEVTYPE_VCR, hwndCB); // set the selection to whatever he chose last time through this dlg // default is the first entry. SendMessage( hwndCB, CB_SETCURSEL, nLastCBIndex, 0L); break; case WM_COMMAND: switch (GET_WM_COMMAND_ID(wParam, lParam)) { case IDOK: // i think the point of this is to ensure that // the KILLFOCUS processing for the edit boxes has been done // and thus the temp times are the same as the dialog text SetFocus(GET_WM_COMMAND_HWND(wParam, lParam)); MCIGetDeviceNameAndIndex (hwnd, &nLastCBIndex, gachMCIDeviceName); capSetMCIDeviceName(ghWndCap, gachMCIDeviceName) ; gCapParms.fStepMCIDevice = IsDlgButtonChecked (hwnd, IDD_MCI_STEP); // pick up the temp times - these were set on KILLFOCUS msgs // (when we did validation and string->dword conversion gCapParms.dwMCIStartTime = tdwMCIStartTime; gCapParms.dwMCIStopTime = tdwMCIStopTime; gCapParms.fStepCaptureAt2x = IsDlgButtonChecked (hwnd, IDD_MCI_AVERAGE_2X); gCapParms.wStepCaptureAverageFrames = GetDlgItemInt (hwnd, IDD_MCI_AVERAGE_FR, NULL, FALSE); EndDialog(hwnd, TRUE); break; case IDCANCEL: EndDialog(hwnd, 0); break; case IDD_MCI_STEP: case IDD_MCI_PLAY: //averaging only enabled in play mode f = IsDlgButtonChecked (hwnd, IDD_MCI_STEP); EnableWindow (GetDlgItem (hwnd, IDD_MCI_AVERAGE_2X), f); EnableWindow (GetDlgItem (hwnd, IDD_MCI_AVERAGE_FR), f); break; case IDD_MCI_AVERAGE_FR: // validate the count of frames to average 1..100 if (GET_WM_COMMAND_CMD(wParam, lParam) == EN_KILLFOCUS) { j = GetDlgItemInt(hwnd, GET_WM_COMMAND_ID(wParam, lParam), NULL, FALSE); // Limit frames to average between 1 and 100 if (j < 1 || j > 100) { SetDlgItemInt (hwnd, GET_WM_COMMAND_ID(wParam, lParam), 1, FALSE); } } break; case IDD_MCI_STARTSET: case IDD_MCI_STOPSET: // set the start or stop time to be the time // on the device right now. // MCI devices could yield and cause us to re-enter - the // simplest answer seems to be to disable the dialog EnableWindow(hwnd, FALSE); MCIGetDeviceNameAndIndex (hwnd, &nLastCBIndex, buf); if (MCIDeviceOpen (buf)) { if (GET_WM_COMMAND_ID(wParam, lParam) == IDD_MCI_STARTSET) { if (MCIDeviceGetPosition (&tdwMCIStartTime)) { TimeMSToHMSString (tdwMCIStartTime, buf); SetDlgItemText (hwnd, IDD_MCI_STARTTIME, buf); } else { MessageBoxID(IDS_MCI_CONTROL_ERROR, MB_OK|MB_ICONEXCLAMATION); } } else { if (MCIDeviceGetPosition (&tdwMCIStopTime)) { TimeMSToHMSString (tdwMCIStopTime, buf); SetDlgItemText (hwnd, IDD_MCI_STOPTIME, buf); } else { MessageBoxID(IDS_MCI_CONTROL_ERROR, MB_OK|MB_ICONEXCLAMATION); } } MCIDeviceClose (); } else { // cant open device MessageBoxID(IDS_MCI_CONTROL_ERROR, MB_OK|MB_ICONEXCLAMATION); } EnableWindow(hwnd, TRUE); break; case IDD_MCI_STARTTIME: case IDD_MCI_STOPTIME: if (GET_WM_COMMAND_CMD (wParam, lParam) == EN_KILLFOCUS) { GetDlgItemText (hwnd, GET_WM_COMMAND_ID(wParam, lParam), buf, sizeof (buf)); if ((dw = TimeHMSStringToMS (buf)) == -1) { // Error in string, reset MessageBeep (0); if (GET_WM_COMMAND_ID(wParam, lParam) == IDD_MCI_STARTTIME) dw = tdwMCIStartTime; else dw = tdwMCIStopTime; } if (GET_WM_COMMAND_ID(wParam, lParam) == IDD_MCI_STARTTIME) { tdwMCIStartTime = dw; TimeMSToHMSString (tdwMCIStartTime, buf); SetDlgItemText (hwnd, IDD_MCI_STARTTIME, buf); } else { tdwMCIStopTime = dw; TimeMSToHMSString (tdwMCIStopTime, buf); SetDlgItemText (hwnd, IDD_MCI_STOPTIME, buf); } } break; } break; } return FALSE; }