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

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2020-09-26 03:20:57 -05:00
/******************************************************************************
Copyright (C) Microsoft Corporation 1985-1991. All rights reserved.
Title: window.c - Multimedia Systems Media Control Interface
driver for AVI.
*****************************************************************************/
#include "graphic.h"
#include "avitask.h" // for TASKIDLE
//#define IDM_CONFIG 0x100
//#define IDM_SKIPFRAMES 0x110
#define IDM_MUTE 0x120
#define IDM_STRETCH 0x130
#ifdef _WIN32
// Use a different class name on 32 bit systems to ease the 16/32
// coexistence problem. (We might want both classes defined at once.)
TCHAR szClassName[] = TEXT("AVIWnd32");
#else
char szClassName[] = "AVIWnd";
#endif
DWORD NEAR PASCAL GraphicStop (NPMCIGRAPHIC npMCI, DWORD dwFlags);
DWORD NEAR PASCAL GraphicPause (NPMCIGRAPHIC npMCI, DWORD dwFlags);
DWORD NEAR PASCAL GraphicPlay (NPMCIGRAPHIC npMCI, DWORD dwFlags,
LPMCI_ANIM_PLAY_PARMS lpPlay );
DWORD NEAR PASCAL GraphicSeek (NPMCIGRAPHIC npMCI, DWORD dwFlags,
LPMCI_SEEK_PARMS lpSeek);
BOOL NEAR PASCAL GraphicWindowInit (void)
{
WNDCLASS cls;
// define the class of window we want to register
cls.lpszClassName = szClassName;
cls.style = CS_GLOBALCLASS | CS_OWNDC;
cls.hCursor = LoadCursor (NULL, IDC_ARROW);
cls.hIcon = NULL;
cls.lpszMenuName = NULL;
////cls.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
cls.hbrBackground = GetStockObject(BLACK_BRUSH);
cls.hInstance = ghModule;
cls.lpfnWndProc = GraphicWndProc;
cls.cbClsExtra = 0;
cls.cbWndExtra = sizeof (NPMCIGRAPHIC);
return RegisterClass (&cls);
}
#ifdef _WIN32
/*
* de-register the class on unloading the dll so that we can
* successfully re-register the class next time we are loaded.
* note that nt only unregisters a class when the app exits.
*/
BOOL NEAR PASCAL GraphicWindowFree(void)
{
return(UnregisterClass(szClassName, ghModule));
}
/**************************************************************************
***************************************************************************/
//-----------------------------------------------------------------------
// this is the winproc thread's main function.
// we create the window and signal the event once initialization
// is complete. We then block either processing messages or waiting for
// hEventWinProcDie. When this is set, we clean up and exit
void aviWinProcTask(DWORD_PTR dwInst)
{
NPMCIGRAPHIC npMCI = (NPMCIGRAPHIC) dwInst;
HWND hWnd;
MSG msg;
// Create the default window - the caller may
// supply style and parent window.
#ifdef DEBUG
if (npMCI->hwndParent) {
if ( !IsWindow(npMCI->hwndParent)) {
//DebugBreak();
// This should have been trapped before getting here
}
}
#endif
if (npMCI->dwStyle != (DWORD) -1) {
// CW_USEDEFAULT can't be used with popups or children so
// if the user provides the style, default to full-screen.
hWnd =
// Note: The CreateWindow/Ex call is written this way as on Win32
// CreateWindow is a MACRO, and hence the call must be contained
// within the preprocessor block.
CreateWindowEx(
#ifdef BIDI
WS_EX_BIDI_SCROLL | WS_EX_BIDI_MENU |WS_EX_BIDI_NOICON,
#else
0,
#endif
szClassName,
FileName(npMCI->szFilename),
npMCI->dwStyle,
0, 0,
GetSystemMetrics (SM_CXSCREEN),
GetSystemMetrics (SM_CYSCREEN),
npMCI->hwndParent,
NULL, ghModule, (LPTSTR)npMCI);
} else {
npMCI->dwStyle = WS_CAPTION | WS_THICKFRAME | WS_MINIMIZEBOX |
WS_SYSMENU | WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
hWnd =
CreateWindowEx(
#ifdef BIDI
WS_EX_BIDI_SCROLL | WS_EX_BIDI_MENU |WS_EX_BIDI_NOICON,
#else
0,
#endif
szClassName,
FileName(npMCI->szFilename),
npMCI->dwStyle,
CW_USEDEFAULT, 0,
CW_USEDEFAULT, 0,
npMCI->hwndParent,
NULL, ghModule, (LPTSTR)npMCI);
}
npMCI->hwndDefault = hWnd;
npMCI->hwndPlayback = hWnd;
if (!hWnd) {
// fail to start up - just exit this function and the caller
// will detect thread exit
DPF(("CreateWindow failed, LastError=%d\n", GetLastError()));
npMCI->dwReturn = MCIERR_CREATEWINDOW;
return;
}
// window created ok - signal worker thread to continue
SetEvent(npMCI->hEventWinProcOK);
while (GetMessage(&msg, NULL, 0, 0)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
// WM_QUIT received - exit now
GdiFlush();
return;
}
//
// Pass request bit(s) to worker thread.
// Use WinProcRequestEx when the WinCrit critical section is already held
// and WINPROC_ACTIVE/INACTIVE is not being used
//
// Use WinProcRequest when the WinCrit critical section is required
//
void INLINE
WinProcRequestEx(NPMCIGRAPHIC npMCI, DWORD dwFlag)
{
DPF2(("WinProcRequestEx... request %8x", dwFlag));
npMCI->dwWinProcRequests |= dwFlag;
SetEvent(npMCI->heWinProcRequest);
DPF2(("!...Ex request %8x done\n", dwFlag));
}
void
WinProcRequest(NPMCIGRAPHIC npMCI, DWORD dwFlag)
{
DPF2(("WinProcRequest... request %8x", dwFlag));
EnterWinCrit(npMCI);
DPF2(("!... request %8x ...", dwFlag));
// If we are being made active or inactive, then ensure that only
// one of the WINPROC_ACTIVE/WINPROC_INACTIVE bits is switched on.
if (dwFlag & (WINPROC_ACTIVE | WINPROC_INACTIVE)) {
npMCI->dwWinProcRequests &= ~(WINPROC_ACTIVE | WINPROC_INACTIVE);
}
npMCI->dwWinProcRequests |= dwFlag;
SetEvent(npMCI->heWinProcRequest);
DPF2(("!... request %8x done\n", dwFlag));
LeaveWinCrit(npMCI);
}
#endif
DWORD FAR PASCAL GraphicConfig(NPMCIGRAPHIC npMCI, DWORD dwFlags);
#if 0
static void NEAR PASCAL Credits(HWND hwnd);
#endif
//
// Window proc is always run on the winproc thread. We hold
// a critical section during all paint/palette code to protect us
// against interaction with the worker thread. We do not hold this
// critical section for the whole winproc.
//
LRESULT FAR PASCAL _LOADDS GraphicWndProc (HWND hwnd, UINT wMsg, WPARAM wParam, LPARAM lParam)
{
PAINTSTRUCT ps;
NPMCIGRAPHIC npMCI;
HMENU hmenu;
HDC hdc;
RECT rc;
MINMAXINFO FAR * lpmmi;
TCHAR ach[80];
#ifndef _WIN32
npMCI = (NPMCIGRAPHIC)GetWindowWord (hwnd, 0);
#else
npMCI = (NPMCIGRAPHIC)GetWindowLongPtr (hwnd, 0);
if (npMCI) {
if (IsBadReadPtr(npMCI, sizeof(MCIGRAPHIC))
|| !IsTask(npMCI->hTask)) {
DPF2(("WndProc called with msg %04x after task npMCI=%08x is dead\n", wMsg, npMCI));
// if the device is in some sort of shutdown state, only the
// messages below are safe to process. Note: not processing
// AVIM_DESTROY can lead to deadlock.
switch (wMsg) {
case AVIM_DESTROY:
DestroyWindow(hwnd);
return 1L;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hwnd, wMsg, wParam, lParam);
}
}
Assert(wMsg != WM_CREATE);
} else {
// npMCI is NULL - only WM_CREATE can safely be processed
// I think we can also safely process AVIM_DESTROY and that
// will avoid a few potential hangs...
if ((wMsg != WM_CREATE) && (wMsg != AVIM_DESTROY)) {
return DefWindowProc(hwnd, wMsg, wParam, lParam);
}
}
#endif
switch (wMsg)
{
case WM_CREATE:
npMCI = (NPMCIGRAPHIC)(UINT_PTR)(DWORD_PTR)
((LPCREATESTRUCT)lParam)->lpCreateParams;
#ifdef _WIN32
SetWindowLongPtr (hwnd, 0, (UINT_PTR)npMCI);
#else
SetWindowWord (hwnd, 0, (WORD)npMCI);
#endif
hmenu = GetSystemMenu(hwnd, 0);
if (hmenu) {
/* Our system menu is too long--get rid of extra stuff. */
// DeleteMenu(hmenu, SC_RESTORE, MF_BYCOMMAND);
// DeleteMenu(hmenu, SC_MINIMIZE, MF_BYCOMMAND);
DeleteMenu(hmenu, SC_MAXIMIZE, MF_BYCOMMAND);
DeleteMenu(hmenu, SC_TASKLIST, MF_BYCOMMAND);
/* Add additional menu items to the end of the system menu */
// AppendMenu(hmenu, MF_SEPARATOR, 0, 0L);
#ifdef IDM_CONFIG
LoadString(ghModule, MCIAVI_MENU_CONFIG, ach, NUMELMS(ach));
AppendMenu(hmenu, MF_STRING, IDM_CONFIG, ach);
#endif
LoadString(ghModule, MCIAVI_MENU_STRETCH, ach, NUMELMS(ach));
AppendMenu(hmenu, MF_STRING, IDM_STRETCH, ach);
LoadString(ghModule, MCIAVI_MENU_MUTE, ach, NUMELMS(ach));
AppendMenu(hmenu, MF_STRING, IDM_MUTE, ach);
}
break;
case WM_INITMENU:
hmenu = GetSystemMenu(hwnd, 0);
if (hmenu) {
#ifdef IDM_SKIPFRAMES
CheckMenuItem(hmenu, IDM_SKIPFRAMES, MF_BYCOMMAND |
((npMCI->dwOptionFlags & MCIAVIO_SKIPFRAMES) ?
MF_CHECKED : MF_UNCHECKED));
#endif
CheckMenuItem(hmenu, IDM_STRETCH, MF_BYCOMMAND |
((npMCI->dwOptionFlags & MCIAVIO_STRETCHTOWINDOW) ?
MF_CHECKED : MF_UNCHECKED));
#ifdef IDM_CONFIG
/* If in configure box, disable menu item. */
EnableMenuItem(hmenu, IDM_CONFIG, MF_BYCOMMAND |
(npMCI->wMessageCurrent == 0 ?
MF_ENABLED : MF_GRAYED));
#endif
/* If in stupid mode, disable stretch menu item. */
EnableMenuItem(hmenu, IDM_STRETCH, MF_BYCOMMAND |
((!(npMCI->dwOptionFlags & MCIAVIO_STUPIDMODE)) ?
MF_ENABLED : MF_GRAYED));
EnableMenuItem(hmenu, IDM_MUTE, MF_BYCOMMAND |
(npMCI->nAudioStreams ?
MF_ENABLED : MF_GRAYED));
CheckMenuItem(hmenu, IDM_MUTE, MF_BYCOMMAND |
(!(npMCI->dwFlags & MCIAVI_PLAYAUDIO) ?
MF_CHECKED : MF_UNCHECKED));
}
break;
case WM_SYSCOMMAND:
switch (wParam & 0xfff0) {
case SC_KEYMENU:
case SC_MOUSEMENU:
gfEvilSysMenu++;
lParam = DefWindowProc(hwnd, wMsg, wParam, lParam);
gfEvilSysMenu--;
return lParam;
#ifdef IDM_SKIPFRAMES
case IDM_SKIPFRAMES:
EnterWinCrit(npMCI);
npMCI->dwOptionFlags ^= MCIAVIO_SKIPFRAMES;
LeaveWinCrit(npMCI);
break;
#endif
case IDM_STRETCH:
EnterWinCrit(npMCI);
npMCI->dwOptionFlags ^= MCIAVIO_STRETCHTOWINDOW;
if (!(npMCI->dwOptionFlags & MCIAVIO_STRETCHTOWINDOW)) {
SetWindowToDefaultSize(npMCI, FALSE);
}
Winproc_DestRect(npMCI, FALSE);
LeaveWinCrit(npMCI);
break;
case IDM_MUTE:
// just set request flag in npMCI
WinProcRequest(npMCI, WINPROC_MUTE);
break;
#ifdef IDM_CONFIG
case IDM_CONFIG:
npMCI->wMessageCurrent = MCI_CONFIGURE;
gfEvil++;
dwOptions = npMCI->dwOptions;
f = ConfigDialog(NULL, npMCI);
if (f) {
#ifdef DEBUG
//
// in DEBUG always reset the dest rect because the user may
// have played with the DEBUG DrawDib options and we will
// need to call DrawDibBegin() again.
//
if (TRUE)
#else
if ((npMCI->dwOptionFlags & (MCIAVIO_STUPIDMODE|MCIAVIO_ZOOMBY2
|MCIAVIO_WINDOWSIZEMASK))
!= (dwOptions & (MCIAVIO_STUPIDMODE|MCIAVIO_ZOOMBY2
|MCIAVIO_WINDOWSIZEMASK)) )
#endif
{
npMCI->lFrameDrawn =
(- (LONG) npMCI->wEarlyRecords) - 1;
//EnterWinCrit(npMCI);
SetWindowToDefaultSize(npMCI, FALSE);
Winproc_DestRect(npMCI, FALSE);
//LeaveWinCrit(npMCI);
}
} else {
npMCI->dwOptionFlags = dwOptions;
}
GraphicConfig(npMCI, 0L);
gfEvil--;
npMCI->wMessageCurrent = 0;
break;
#endif
}
break;
case WM_CLOSE:
// Hide default window
WinProcRequest(npMCI, WINPROC_STOP);
ShowWindow(hwnd, SW_HIDE);
return 0L;
// this stuff is here because of some bizarre inter-thread rules in nt
case AVIM_DESTROY:
DestroyWindow(hwnd);
return 1L;
case AVIM_SHOWSTAGE:
{
BOOL bIsVis;
// activate if not visible. force activation if requested
// (if palette changes)
if (wParam) {
bIsVis = FALSE;
} else {
bIsVis = IsWindowVisible(hwnd);
}
SetWindowPos(npMCI->hwndPlayback, HWND_TOP, 0, 0, 0, 0,
SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW |
(bIsVis ? SWP_NOACTIVATE : 0));
if (!bIsVis) {
SetForegroundWindow(hwnd);
}
}
return 1L;
case WM_DESTROY:
// The window may be destroyed 2 ways.
// a. the device is closed. In this case the animation is
// freed in DeviceClose which is called from GraphicClose
// and the animation ID is NULL by the time this window is
// destroyed.
// b. the window is closed. In this case, the animation is
// not closed and we should set the stage to NULL. A new
// default window will be created if needed.
EnterWinCrit(npMCI);
if (IsTask(npMCI->hTask)) {
WinProcRequestEx(npMCI, WINPROC_STOP);
}
if (npMCI->hwndPlayback == npMCI->hwndDefault)
npMCI->hwndPlayback = NULL;
npMCI->hwndDefault = NULL;
LeaveWinCrit(npMCI);
// winproc thread can now exit
PostQuitMessage(0);
break;
case WM_ERASEBKGND:
hdc = (HDC) wParam;
// We should not need any critical section as the system
// has given us a HDC as a message parameter.
Assert(hdc && (hdc != npMCI->hdc));
//EnterWinCrit(npMCI);
if (!(npMCI->dwFlags & MCIAVI_SHOWVIDEO)) {
FillRect(hdc, &npMCI->rcDest, GetStockObject(GRAY_BRUSH));
}
SaveDC(hdc);
ExcludeClipRect(hdc,
npMCI->rcDest.left, npMCI->rcDest.top,
npMCI->rcDest.right, npMCI->rcDest.bottom);
GetClientRect(hwnd, &rc);
FillRect(hdc, &rc, GetStockObject(BLACK_BRUSH));
RestoreDC(hdc, -1);
#if 0
/* Hack: if we're in a WAIT state, we won't get
** a WM_PAINT, so we need to invalidate the streams here
*/
GetClipBox(hdc, &rc);
StreamInvalidate(npMCI, &rc);
#endif
//LeaveWinCrit(npMCI);
return 0L;
case WM_PAINT:
// we always do this even if we leave it to the
// worker to paint, since otherwise we'll loop endlessly
// processing WM_PAINT
hdc = BeginPaint(hwnd, &ps);
rc = ps.rcPaint;
// if the worker thread is cueing, seeking or playing we don't
// actually want to paint (in case it is doing rle delta paints).
// now we've got the window critsec, it is safe to check
// the task state
if ((npMCI->wTaskState == TASKPLAYING) ||
(npMCI->wTaskState == TASKCUEING)) {
npMCI->dwFlags |= MCIAVI_NEEDUPDATE;
} else {
StreamInvalidate(npMCI, &rc);
// we don't need to pass rc in as we are clipped to this
// already and all they do is clip to it.
// don't paint if there is a 'pf' since we only ever
// reference this on the worker thread (OLE threading rules)
if (npMCI->pf) {
WinProcRequest(npMCI, WINPROC_UPDATE);
} else {
// note: TryStreamUpdate will get the HDC critical section
if (!TryStreamUpdate(npMCI, MCI_DGV_UPDATE_PAINT, hdc, NULL)) {
// requires full play - ask worker thread to do this
// to paint the frame at this point, we would have
// to call mciaviPlayFile. This can only be safely called
// on the worker thread. To avoid potential deadlock,
// this paint has to be done asynchronously from us, and
// also we lose the update rect information - the
// worker will paint the entire destination rect.
#if 0 // looks bad - don't bother
// paint gray first, in case the worker thread is busy
// or it fails
GetClientRect(hwnd, &rc);
FillRect(hdc, &rc, GetStockObject(DKGRAY_BRUSH));
#endif
WinProcRequest(npMCI, WINPROC_UPDATE);
} else {
// painted successfully on this thread
// if we are playing and so have an hdc then we need to
// reprepare the orig dc after switching back to it
if (npMCI->wTaskState == TASKPAUSED) {
EnterHDCCrit(npMCI);
// if a new command has arrived the state may have changed
// underneath us. If so, the dc may have been released. We
// only want to call PrepareDC if npMCI->hdc is non null.
if(npMCI->hdc) PrepareDC(npMCI);
LeaveHDCCrit(npMCI); // remember to release the critical section
}
}
}
}
EndPaint(hwnd, &ps);
return 0L; // we do NOT call DefWindowProc
case WM_PALETTECHANGED:
// We're not using the default window. We have no business here.
if (npMCI->hwndPlayback != hwnd)
break;
//
// someone has realized a palette - so we need to re-realize our
// palette (note that this will also cause drawdib to
// check for PAL_INDICES vs PAL_COLOURS.
//
if ((HWND) wParam != hwnd) {
WinProcRequest(npMCI, WINPROC_REALIZE);
// invalidate is done in InternalRealize
//InvalidateRect(hwnd, NULL, FALSE);
}
break;
case WM_QUERYNEWPALETTE:
{
#if 0
LONG lRet;
#endif
// We're not using the default window. We have no business here.
if (npMCI->hwndPlayback != hwnd)
break;
#if 0
// not true = internalrealize has always returned 0, so why do this
// on this thread?
EnterHDCCrit(npMCI);
// need to do this on winproc thread to get
// correct return value.
lRet = InternalRealize(npMCI);
LeaveHDCCrit(npMCI);
return(lRet);
#else
WinProcRequest(npMCI, WINPROC_REALIZE);
return 0;
#endif
}
case WM_WINDOWPOSCHANGED:
//EnterWinCrit(npMCI);
//CheckWindowMove grabs the critical section when it needs it
CheckWindowMove(npMCI, TRUE);
//LeaveWinCrit(npMCI);
break;
case WM_SIZE:
EnterWinCrit(npMCI);
Winproc_DestRect(npMCI, FALSE);
LeaveWinCrit(npMCI);
break;
case WM_QUERYENDSESSION:
WinProcRequest(npMCI, WINPROC_STOP);
break;
case WM_ENDSESSION:
if (wParam) {
DestroyWindow(hwnd); // we may not be able to destroy window?
}
break;
case WM_GETMINMAXINFO:
lpmmi = (MINMAXINFO FAR *)(lParam);
lpmmi->ptMinTrackSize.x = GetSystemMetrics(SM_CXSIZE) * 2;
break;
case WM_NCACTIVATE:
WinProcRequest(npMCI, wParam?WINPROC_ACTIVE : WINPROC_INACTIVE);
break;
#if 0
We should not need both ACTIVATE and NCACTIVATE - use the one that
arrives first (to give us a little more time and reduce the start up
latency)
case WM_ACTIVATE:
WinProcRequest(npMCI, wParam?WINPROC_ACTIVE : WINPROC_INACTIVE);
break;
#endif
#ifdef REMOTESTEAL
case WM_AUDIO_ON: // Someone has released the wave device
{
extern HWND hwndLostAudio;
//Assert(npMCI->dwFlags & MCIAVI_PLAYAUDIO);
//Assert(npMCI->dwFlags & MCIAVI_LOSTAUDIO);
//Assert(npMCI->hWave == NULL);
// Timing might be such that these assertions are invalid
// If we are not playing then we might be able to forward
// the message to another... OR, tell the one giving up the
// audio that it can be reclaimed because we no longer have
// a use for it.
if (npMCI->wTaskState != TASKPLAYING) {
if (!hwndLostAudio) {
hwndLostAudio = (HWND)wParam;
}
if (hwndLostAudio) {
DPF2(("Forwarding WM_AUDIO_ON message to %x...\n", hwndLostAudio));
if (IsWindow(hwndLostAudio)) {
PostMessage(hwndLostAudio, WM_AUDIO_ON, 0, 0);
}
hwndLostAudio = 0; // Prevent further messages
}
} else {
// we are playing
// Save the window handle of the window releasing the sound
DPF2(("Setting hwndLostAudio to %x (was %x)\n", wParam, hwndLostAudio));
hwndLostAudio = (HWND)wParam;
// if hwndLostAudio==0 then we do not return it to anyone
WinProcRequest(npMCI, WINPROC_SOUND);
}
return 0;
break;
}
case WM_AUDIO_OFF: // Someone wants our wave device
{
extern HWND hwndWantAudio;
//Assert(npMCI->dwFlags & MCIAVI_PLAYAUDIO);
//Assert(!(npMCI->dwFlags & MCIAVI_LOSTAUDIO));
//Assert(npMCI->hWave != NULL);
// Timing might be such that these assertions are invalid
SetNTFlags(npMCI, NTF_AUDIO_OFF);
// Save the window handle of the window which wants sound
DPF2(("WM_AUDIO_OFF... hwndWantAudio set to %x (was %x)\n", wParam, hwndWantAudio));
hwndWantAudio = (HWND)wParam;
// if hwndWantAudio==0 then we do not release the wave device
if (IsWindow(hwndWantAudio)) {
WinProcRequest(npMCI, WINPROC_SILENT);
} else {
DPF(("WM_AUDIO_OFF... but the target window is invalid\n"));
}
ResetNTFlags(npMCI, NTF_AUDIO_OFF);
return 0;
break;
}
#endif // REMOTESTEAL
#if 0
case WM_LBUTTONDOWN:
{
DWORD dw;
static DWORD dwLastClick;
static DWORD dwClicks = 0;
#define MAX_CLICKS 7
/* . = (0,300) - = (300,1000) word = (500,1500) */
/* AVI: .- ...- .. */
static DWORD adwClickHigh[MAX_CLICKS] =
{ 300, 1500, 300, 300, 300, 1500, 300 };
static DWORD adwClickLow[MAX_CLICKS] =
{ 0, 500, 0, 0, 0, 500, 0 };
dw = timeGetTime();
if (((dw - dwLastClick) > adwClickLow[dwClicks]) &&
((dw - dwLastClick) <= adwClickHigh[dwClicks]))
dwClicks++;
else
dwClicks = 0;
dwLastClick = dw;
if (dwClicks == MAX_CLICKS) {
WinProcRequest(npMCI, WINPROC_STOP);
Credits(hwnd);
dwClicks = 0;
}
}
#endif
} // switch(wMsg)
return DefWindowProc(hwnd, wMsg, wParam, lParam);
}
#if 0
static void NEAR PASCAL Credits(HWND hwnd)
{
/* Credits... */
RECT rc;
RECT rcUpdate;
HDC hdc;
MSG msg;
int dyLine;
int yLine;
TEXTMETRIC tm;
DWORD dwNextTime;
long lScroll;
DWORD rgb;
HANDLE hResInfo;
HANDLE hResData;
LPSTR pchSrc, pchDst;
char achLine[100];
int iEncrypt;
#define EOFCHAR '@' // end of credits file
/* load the credits */
if ((hResInfo = FindResource(ghModule, TEXT("MMS"), TEXT("MMSCR"))) == NULL)
return;
if ((hResData = LoadResource(ghModule, hResInfo)) == NULL)
return;
if ((pchSrc = LockResource(hResData)) == NULL)
return;
/* we want to get all mouse and keyboard events, to make
* sure we stop the animation when the user clicks or
* hits a key
*/
SetFocus(hwnd);
SetCapture(hwnd);
/* Scroll the credits up, one pixel at a time. pchSrc
* points to the encrypted data; achLine contains a decrypted
* line (null-terminated). dyLine is the height of each
* line (constant), and yLine is between 0 and dyLine,
* indicating how many pixels of the line have been scrolled
* in vertically from the bottom
*/
hdc = GetDC(hwnd);
SelectObject(hdc, GetStockObject(ANSI_VAR_FONT));
GetClientRect(hwnd, &rc);
SetTextAlign(hdc, TA_CENTER);
SetBkColor(hdc, RGB(0, 0, 0));
SetRect(&rcUpdate, 0, rc.bottom - 1, rc.right, rc.bottom);
GetTextMetrics(hdc, &tm);
if ((dyLine = tm.tmHeight + tm.tmExternalLeading) == 0)
dyLine = 1;
yLine = dyLine;
dwNextTime = GetCurrentTime(); // time to do the next scroll
lScroll = 0;
iEncrypt = 0;
while (TRUE) {
/* If the user clicks the mouse or hits a key, exit.
* However, ignore WM_LBUTTONUP because they will have
* to let go of the mouse after clicking the icon.
* Also, ignore mouse move messages.
*/
if (PeekMessage(&msg, hwnd, WM_KEYFIRST, WM_KEYLAST,
PM_NOREMOVE | PM_NOYIELD))
break; // exit on key hit
if (PeekMessage(&msg, hwnd, WM_MOUSEFIRST, WM_MOUSELAST,
PM_NOREMOVE | PM_NOYIELD)) {
if ((msg.message == WM_MOUSEMOVE) ||
(msg.message == WM_LBUTTONUP)) {
/* remove and ignore message */
PeekMessage(&msg, hwnd, msg.message,
msg.message,
PM_REMOVE | PM_NOYIELD);
}
else
break; // exit on click
}
/* scroll at a fixed no. of vertical pixels per sec. */
if (dwNextTime > GetCurrentTime())
continue;
dwNextTime += 50L; // millseconds per scroll
if (yLine == dyLine) {
/* decrypt a line and copy to achLine */
pchDst = achLine;
while (TRUE) {
*pchDst = (char) (*pchSrc++ ^
(128 | (iEncrypt++ & 127)));
if ((*pchDst == '\r') ||
(*pchDst == EOFCHAR))
break;
pchDst++;
}
if (*pchDst == EOFCHAR)
break; // no more lines
*pchDst = 0; // null-terminate
pchSrc++, iEncrypt++; // skip '\n'
yLine = 0;
}
/* scroll screen up one pixel */
BitBlt(hdc, 0, 0, rcUpdate.right, rcUpdate.top,
hdc, 0, 1, SRCCOPY);
/* vary the text colors through a "rainbow" */
switch ((int) (lScroll++ / 4) % 5/*num-of-cases*/) {
case 0: rgb = RGB(255, 0, 0); break;
case 1: rgb = RGB(255, 255, 0); break;
case 2: rgb = RGB( 0, 255, 0); break;
case 3: rgb = RGB( 0, 255, 255); break;
case 4: rgb = RGB(255, 0, 255); break;
}
SetTextColor(hdc, rgb);
/* fill in the bottom pixel */
SaveDC(hdc);
yLine++;
IntersectClipRect(hdc, rcUpdate.left, rcUpdate.top,
rcUpdate.right, rcUpdate.bottom);
#ifdef _WIN32
ExtTextOutA(hdc, rc.right / 2, rc.bottom - yLine,
ETO_OPAQUE, &rcUpdate,
achLine, lstrlenA(achLine), NULL);
#else
ExtTextOut(hdc, rc.right / 2, rc.bottom - yLine,
ETO_OPAQUE, &rcUpdate,
achLine, lstrlen(achLine), NULL);
#endif
RestoreDC(hdc, -1);
}
ReleaseDC(hwnd, hdc);
ReleaseCapture();
UnlockResource(hResData);
FreeResource(hResData);
InvalidateRect(hwnd, NULL, TRUE);
}
#endif
//
// Obey the registry default sizing of Zoom by 2 and Fixed screen %.
// Takes a Rect and either zooms it by 2 or replaces it with a constant size
// or leaves it alone.
//
void FAR PASCAL AlterRectUsingDefaults(NPMCIGRAPHIC npMCI, LPRECT lprc)
{
if (npMCI->dwOptionFlags & MCIAVIO_ZOOMBY2) {
SetRect(lprc, 0, 0, lprc->right*2, lprc->bottom*2);
} else {
if (npMCI->dwOptionFlags & MCIAVIO_WINDOWSIZEMASK) {
lprc->right = GetSystemMetrics (SM_CXSCREEN);
lprc->bottom = GetSystemMetrics (SM_CYSCREEN);
switch(npMCI->dwOptionFlags & MCIAVIO_WINDOWSIZEMASK)
{
case MCIAVIO_1QSCREENSIZE:
SetRect(lprc, 0, 0, lprc->right/4, lprc->bottom/4);
break;
case MCIAVIO_2QSCREENSIZE:
SetRect(lprc, 0, 0, lprc->right/2, lprc->bottom/2);
break;
case MCIAVIO_3QSCREENSIZE:
SetRect(lprc, 0, 0, lprc->right*3/4, lprc->bottom*3/4);
break;
case MCIAVIO_MAXWINDOWSIZE:
SetRect(lprc, 0, 0, lprc->right, lprc->bottom);
break;
}
}
}
}
// Set the size of the default window to be the rcMovie size (default
// destination size). Keep in mind a top level window might grow off screen,
// so adjust the position so that it remains on screen.
void FAR PASCAL SetWindowToDefaultSize(NPMCIGRAPHIC npMCI, BOOL fUseDefaultSizing)
{
RECT rc, rcW;
int xScreen, yScreen, x, y;
WINDOWPLACEMENT wp;
wp.length = sizeof(wp);
if (npMCI->hwndPlayback && npMCI->hwndPlayback == npMCI->hwndDefault) {
// Get the size of the movie, maybe alter it if the configure options
// tell us to play zoomed or fullscreen or something, and adjust for
// non-client area.
//
rc = npMCI->rcMovie;
if (fUseDefaultSizing)
AlterRectUsingDefaults(npMCI, &rc);
AdjustWindowRect(&rc, GetWindowLong(npMCI->hwndPlayback, GWL_STYLE), FALSE);
// For top-level windows, get the position where the playback window is
// (or will be) on the screen. Make it fit on the screen if possible.
// Dorking with the position of the default window if it's a
// child window is a bad idea. First of all, SetWindowPos is going to
// position it relative to its parent, and these calculations figure
// out where we want it in screen coordinates. Second of all, trying
// to move a child so that it's on screen when the parent could be
// offscreen itself or hiding the child window is just asking for
// trouble.
//
if (!(GetWindowLong(npMCI->hwndPlayback, GWL_STYLE) & WS_CHILD)) {
if (IsIconic(npMCI->hwndPlayback)) {
GetWindowPlacement(npMCI->hwndPlayback, &wp);
rcW = wp.rcNormalPosition;
} else {
GetWindowRect(npMCI->hwndPlayback, &rcW);
}
rcW.right = rcW.left + rc.right - rc.left;
rcW.bottom = rcW.top + rc.bottom - rc.top;
xScreen = GetSystemMetrics(SM_CXSCREEN);
yScreen = GetSystemMetrics(SM_CYSCREEN);
if (rcW.right > xScreen) {
x = min(rcW.left, rcW.right - xScreen);
rcW.left -= x;
rcW.right -= x;
}
if (rcW.bottom > yScreen) {
y = min(rcW.top, rcW.bottom - yScreen);
rcW.top -= y;
rcW.bottom -= y;
}
if (IsIconic(npMCI->hwndPlayback)) {
wp.rcNormalPosition = rcW;
SetWindowPlacement(npMCI->hwndPlayback, &wp);
} else {
SetWindowPos(npMCI->hwndPlayback, NULL, rcW.left, rcW.top,
rcW.right - rcW.left, rcW.bottom - rcW.top,
SWP_NOZORDER | SWP_NOACTIVATE);
}
// For a child window, we don't move it, we just size it.
//
} else {
if (IsIconic(npMCI->hwndPlayback)) {
GetWindowPlacement(npMCI->hwndPlayback, &wp);
wp.rcNormalPosition.right = wp.rcNormalPosition.left +
(rc.right - rc.left);
wp.rcNormalPosition.bottom = wp.rcNormalPosition.top +
(rc.bottom - rc.top);
SetWindowPlacement(npMCI->hwndPlayback, &wp);
} else {
SetWindowPos(npMCI->hwndPlayback, NULL, 0, 0,
rc.right - rc.left, rc.bottom - rc.top,
SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE);
}
}
}
}
void FAR PASCAL Winproc_DestRect(NPMCIGRAPHIC npMCI, BOOL fUseDefaultSizing)
{
RECT rc;
/* WM_SIZE messages (on NT at least) are sometimes sent
* during CreateWindow processing (eg if the initial window size
* is not CW_DEFAULT). Some fields in npMCI are only filled in
* after CreateWindow has returned. So there is a danger that at this
* point some fields are not valid.
*/
if (npMCI->hwndPlayback &&
npMCI->hwndPlayback == npMCI->hwndDefault &&
(npMCI->dwOptionFlags & MCIAVIO_STRETCHTOWINDOW)) {
GetClientRect(npMCI->hwndPlayback, &rc);
}
// Only allow ZOOMBY2 and fixed % defaults for our default playback window
else if (npMCI->streams > 0 && npMCI->hwndPlayback == npMCI->hwndDefault) {
rc = npMCI->rcMovie;
// Note: irrelevant on winproc thread
//if (fUseDefaultSizing)
// AlterRectUsingDefaults(npMCI, &rc);
}
else {
return;
}
if (!IsRectEmpty(&rc)) {
WinCritCheckIn(npMCI);
WinProcRequestEx(npMCI, WINPROC_RESETDEST); // faster form... we have the critical section
}
}
#ifdef _WIN32
#define DWORG POINT
#define GETDCORG(hdc, dwOrg) GetDCOrgEx(hdc, &dwOrg)
#else
#define DWORG DWORD
#define GETDCORG(hdc, dwOrg) dwOrg = GetDCOrg(hdc)
#endif
void CheckWindowMove(NPMCIGRAPHIC npMCI, BOOL fForce)
{
DWORG dwOrg;
UINT wRgn;
HDC hdc;
RECT rc;
BOOL fNull;
BOOL fGetDC;
if (!(npMCI->dwFlags & MCIAVI_WANTMOVE))
return;
if (!npMCI->hicDraw || !npMCI->hwndPlayback || npMCI->nVideoStreams == 0)
return;
Assert(IsWindow(npMCI->hwndPlayback));
Assert(npMCI->paStreamInfo);
Assert(npMCI->nVideoStreams > 0);
//
// when the screen is locked for update by a window move operation
// we dont want to turn off the video.
//
// we can tell if the screen is locked by checking a DC to the screen.
//
hdc = GetDC(NULL);
fNull = GetClipBox(hdc, &rc);
ReleaseDC(NULL, hdc);
if (NULLREGION == fNull)
{
npMCI->wRgnType = (UINT) -1;
return;
}
if (fForce)
npMCI->wRgnType = (UINT) -1;
// sync worker thread/winproc thread interaction
EnterHDCCrit(npMCI);
if (fGetDC = (npMCI->hdc == NULL)) {
hdc = GetDC (npMCI->hwndPlayback);
} else {
hdc = npMCI->hdc;
}
wRgn = GetClipBox(hdc, &rc);
GETDCORG(hdc, dwOrg);
if (fGetDC)
ReleaseDC(npMCI->hwndPlayback, hdc);
if (wRgn == npMCI->wRgnType &&
#ifdef _WIN32
dwOrg.x == npMCI->dwOrg.x &&
dwOrg.y == npMCI->dwOrg.y &&
#else
dwOrg == npMCI->dwOrg &&
#endif
EqualRect(&rc, &npMCI->rcClip)) {
LeaveHDCCrit(npMCI);
return;
}
npMCI->wRgnType = wRgn;
npMCI->dwOrg = dwOrg;
npMCI->rcClip = rc;
rc = npMCI->psiVideo->rcDest;
ClientToScreen(npMCI->hwndPlayback, (LPPOINT)&rc);
ClientToScreen(npMCI->hwndPlayback, (LPPOINT)&rc+1);
if (wRgn == NULLREGION)
SetRectEmpty(&rc);
DPF2(("Sending ICM_DRAW_WINDOW message Rgn=%d, Org=(%d,%d) [%d, %d, %d, %d]\n", wRgn, dwOrg, rc));
if (ICDrawWindow(npMCI->hicDraw, &rc) != ICERR_OK) {
DPF2(("Draw device does not want ICM_DRAW_WINDOW messages!\n"));
npMCI->dwFlags &= ~MCIAVI_WANTMOVE;
}
LeaveHDCCrit(npMCI);
}
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