多媒体编程

开发平台：
Visual C++

Systray.cpp：源码内容
							/* 
 *	Copyright (C) 2003-2005 Gabest
 *	http://www.gabest.org
 *
 *  This Program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *   
 *  This Program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *  GNU General Public License for more details.
 *   
 *  You should have received a copy of the GNU General Public License
 *  along with GNU Make; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 
 *  http://www.gnu.org/copyleft/gpl.html
 *
 */
#include "stdafx.h"
#include "resource.h"
#include "DirectVobSubFilter.h"
#include "......DSUtilDSUtil.h"
// hWnd == INVALID_HANDLE_VALUE - get name, hWnd != INVALID_HANDLE_VALUE - show ppage
static TCHAR* CallPPage(IFilterGraph* pGraph, int idx, HWND hWnd);
static HHOOK g_hHook = (HHOOK)INVALID_HANDLE_VALUE;
static UINT WM_DVSPREVSUB = RegisterWindowMessage(TEXT("WM_DVSPREVSUB"));
static UINT WM_DVSNEXTSUB = RegisterWindowMessage(TEXT("WM_DVSNEXTSUB"));
static UINT WM_DVSHIDESUB = RegisterWindowMessage(TEXT("WM_DVSHIDESUB"));
static UINT WM_DVSSHOWSUB = RegisterWindowMessage(TEXT("WM_DVSSHOWSUB"));
static UINT WM_DVSSHOWHIDESUB = RegisterWindowMessage(TEXT("WM_DVSSHOWHIDESUB"));
static UINT s_uTaskbarRestart = RegisterWindowMessage(TEXT("TaskbarCreated"));
static UINT WM_NOTIFYICON = RegisterWindowMessage(TEXT("MYWM_NOTIFYICON"));
LRESULT CALLBACK HookProc(UINT code, WPARAM wParam, LPARAM lParam)
{
	MSG* msg = (MSG*)lParam;
	if(msg->message == WM_KEYDOWN)
	{
		switch(msg->wParam)
		{
		case VK_F13: PostMessage(HWND_BROADCAST, WM_DVSPREVSUB, 0, 0); break;
		case VK_F14: PostMessage(HWND_BROADCAST, WM_DVSNEXTSUB, 0, 0); break;
		case VK_F15: PostMessage(HWND_BROADCAST, WM_DVSHIDESUB, 0, 0); break;
		case VK_F16: PostMessage(HWND_BROADCAST, WM_DVSSHOWSUB, 0, 0); break;
		case VK_F17: PostMessage(HWND_BROADCAST, WM_DVSSHOWHIDESUB, 0, 0); break;
		default: break;
		}
	}
	// Always call next hook in chain 
	return CallNextHookEx(g_hHook, code,  wParam, lParam);
} 
class CSystrayWindow : public CWnd
{
	SystrayIconData* m_tbid;
	void StepSub(int dir)
	{
		int iSelected, nLangs;
		if(FAILED(m_tbid->dvs->get_LanguageCount(&nLangs))) return;
		if(FAILED(m_tbid->dvs->get_SelectedLanguage(&iSelected))) return;
        if(nLangs > 0) m_tbid->dvs->put_SelectedLanguage((iSelected+dir+nLangs)%nLangs);
	}
	void ShowSub(bool fShow)
	{
		m_tbid->dvs->put_HideSubtitles(!fShow);
	}
	void ToggleSub()
	{
		bool fShow;
		if(FAILED(m_tbid->dvs->get_HideSubtitles(&fShow))) return;
		m_tbid->dvs->put_HideSubtitles(!fShow);
	}
public:
	CSystrayWindow(SystrayIconData* tbid) : m_tbid(tbid) {}
protected:
	DECLARE_MESSAGE_MAP()
public:
	afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);
	afx_msg void OnClose();
	afx_msg void OnDestroy();
	afx_msg void OnTimer(UINT nIDEvent);
	afx_msg LRESULT OnDVSPrevSub(WPARAM, LPARAM);
	afx_msg LRESULT OnDVSNextSub(WPARAM, LPARAM);
	afx_msg LRESULT OnDVSHideSub(WPARAM, LPARAM);
	afx_msg LRESULT OnDVSShowSub(WPARAM, LPARAM);
	afx_msg LRESULT OnDVSShowHideSub(WPARAM, LPARAM);
	afx_msg LRESULT OnTaskBarRestart(WPARAM, LPARAM);
	afx_msg LRESULT OnNotifyIcon(WPARAM, LPARAM);
};
BEGIN_MESSAGE_MAP(CSystrayWindow, CWnd)
	ON_WM_CREATE()
	ON_WM_CLOSE()
	ON_WM_DESTROY()
	ON_WM_TIMER()
	ON_REGISTERED_MESSAGE(WM_DVSPREVSUB, OnDVSPrevSub)
	ON_REGISTERED_MESSAGE(WM_DVSNEXTSUB, OnDVSNextSub)
	ON_REGISTERED_MESSAGE(WM_DVSHIDESUB, OnDVSHideSub)
	ON_REGISTERED_MESSAGE(WM_DVSSHOWSUB, OnDVSShowSub)
	ON_REGISTERED_MESSAGE(WM_DVSSHOWHIDESUB, OnDVSShowHideSub)
	ON_REGISTERED_MESSAGE(s_uTaskbarRestart, OnTaskBarRestart)
	ON_REGISTERED_MESSAGE(WM_NOTIFYICON, OnNotifyIcon)
END_MESSAGE_MAP()
int CSystrayWindow::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
	if(CWnd::OnCreate(lpCreateStruct) == -1)
		return -1;
	if(g_hHook == INVALID_HANDLE_VALUE)
	{
		AFX_MANAGE_STATE(AfxGetStaticModuleState());
//		g_hHook = SetWindowsHookEx(WH_GETMESSAGE, (HOOKPROC)HookProc, AfxGetInstanceHandle(), 0);
	}
	SetTimer(1, 5000, NULL);
	PostMessage(s_uTaskbarRestart);
	return 0;
}
void CSystrayWindow::OnClose()
{
	DestroyWindow();
}
void CSystrayWindow::OnDestroy()
{
	NOTIFYICONDATA tnid; 
	tnid.cbSize = sizeof(NOTIFYICONDATA); 
	tnid.hWnd = m_hWnd;
	tnid.uID = IDI_ICON1; 
	Shell_NotifyIcon(NIM_DELETE, &tnid); 
	if(g_hHook != INVALID_HANDLE_VALUE)
	{
		UnhookWindowsHookEx(g_hHook);
		g_hHook = (HHOOK)INVALID_HANDLE_VALUE;
	}
	PostQuitMessage(0); 
}
void CSystrayWindow::OnTimer(UINT nIDEvent)
{
	if(nIDEvent == 1)
	{
		UINT fScreenSaver = 0;
		if(SystemParametersInfo(SPI_GETSCREENSAVEACTIVE, 0, (PVOID)&fScreenSaver, 0))
		{
			SystemParametersInfo(SPI_SETSCREENSAVEACTIVE, 0, 0, SPIF_SENDWININICHANGE); // this might not be needed at all...
			SystemParametersInfo(SPI_SETSCREENSAVEACTIVE, fScreenSaver, 0, SPIF_SENDWININICHANGE);
		}
	}
	CWnd::OnTimer(nIDEvent);
}
LRESULT CSystrayWindow::OnDVSPrevSub(WPARAM, LPARAM)
	{StepSub(-1); return 0;}
LRESULT CSystrayWindow::OnDVSNextSub(WPARAM, LPARAM)
	{StepSub(+1); return 0;}
LRESULT CSystrayWindow::OnDVSHideSub(WPARAM, LPARAM)
	{ShowSub(false); return 0;}
LRESULT CSystrayWindow::OnDVSShowSub(WPARAM, LPARAM)
	{ShowSub(true); return 0;}
LRESULT CSystrayWindow::OnDVSShowHideSub(WPARAM, LPARAM)
	{ToggleSub(); return 0;}
LRESULT CSystrayWindow::OnTaskBarRestart(WPARAM, LPARAM)
{
	AFX_MANAGE_STATE(AfxGetStaticModuleState());
	if(m_tbid->fShowIcon)
	{
		NOTIFYICONDATA tnid; 
		tnid.cbSize = sizeof(NOTIFYICONDATA); 
		tnid.hWnd = m_hWnd; 
		tnid.uID = IDI_ICON1; 
		tnid.hIcon = (HICON)LoadIcon(AfxGetResourceHandle(), MAKEINTRESOURCE(IDI_ICON1));
//		tnid.hIcon = (HICON)LoadImage(AfxGetResourceHandle(), MAKEINTRESOURCE(IDI_ICON1), IMAGE_ICON, 0, 0, LR_LOADTRANSPARENT);
		tnid.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP; 
		tnid.uCallbackMessage = WM_NOTIFYICON; 
		lstrcpyn(tnid.szTip, TEXT("DirectVobSub"), sizeof(tnid.szTip)); 
		BOOL res = Shell_NotifyIcon(NIM_ADD, &tnid); 
		if(tnid.hIcon) DestroyIcon(tnid.hIcon); 
		return res?0:-1;
	}
	return 0;
}
LRESULT CSystrayWindow::OnNotifyIcon(WPARAM wParam, LPARAM lParam)
{
    if((UINT)wParam != IDI_ICON1)
		return -1;
	HWND hWnd = m_hWnd;
	
	switch((UINT)lParam)
	{
		case WM_LBUTTONDBLCLK:
		{
			// IMPORTANT: we must not hold the graph at the same time as showing the property page 
			// or else when closing the app the graph doesn't get released and dvobsub's JoinFilterGraph
			// is never called to close us down.
			CComPtr<IBaseFilter> pBF2;
			BeginEnumFilters(m_tbid->graph, pEF, pBF)
			{
				if(!CComQIPtr<IDirectVobSub>(pBF))
					continue;
				if(CComQIPtr<IVideoWindow> pVW = m_tbid->graph) 
				{
					HWND hwnd;
					if(SUCCEEDED(pVW->get_Owner((OAHWND*)&hwnd))
					|| SUCCEEDED(pVW->get_MessageDrain((OAHWND*)&hwnd)))
						hWnd = hwnd;
				}
				pBF2 = pBF;
				break;
			}
			EndEnumFilters
			if(pBF2)
				ShowPPage(pBF2, hWnd);
		}
		break;
		case WM_RBUTTONDOWN:
		{
			POINT p;
			GetCursorPos(&p);
			CInterfaceArray<IAMStreamSelect> pStreams;
			CStringArray names;
			BeginEnumFilters(m_tbid->graph, pEF, pBF)
			{
				CString name = GetFilterName(pBF);
				if(name.IsEmpty()) continue;
				if(CComQIPtr<IAMStreamSelect> pSS = pBF)
				{
					pStreams.Add(pSS);
					names.Add(name);
				}
			}
			EndEnumFilters
			CMenu popup;
			popup.CreatePopupMenu();
			for(int j = 0; j < pStreams.GetCount(); j++)
			{
				bool fMMSwitcher = !names[j].Compare(_T("Morgan Stream Switcher"));
				DWORD cStreams = 0;
				pStreams[j]->Count(&cStreams);
				DWORD flags, group, prevgroup = -1;
				
				for(UINT i = 0; i < cStreams; i++)
				{
					WCHAR* pName = NULL;
					if(S_OK == pStreams[j]->Info(i, 0, &flags, 0, &group, &pName, 0, 0))
					{
						if(prevgroup != group && i > 1) 
						{
							if(fMMSwitcher) {cStreams = i; break;}
							popup.AppendMenu(MF_SEPARATOR);
						}
						prevgroup = group;
						if(pName)
						{
							popup.AppendMenu(MF_ENABLED|MF_STRING|(flags?MF_CHECKED:MF_UNCHECKED), (1<<15)|(j<<8)|(i), CString(pName));
							CoTaskMemFree(pName);
						}
					}
				}
				if(cStreams > 0) popup.AppendMenu(MF_SEPARATOR);
			}
			int i;
			TCHAR* str;
			for(i = 0; str = CallPPage(m_tbid->graph, i, (HWND)INVALID_HANDLE_VALUE); i++)
			{
				if(_tcsncmp(str, _T("DivX MPEG"), 9) || m_tbid->fRunOnce) // divx3's ppage will crash if the graph hasn't been run at least once yet
					popup.AppendMenu(MF_ENABLED|MF_STRING|MF_UNCHECKED, (1<<14)|(i), str);
				delete [] str;
			}
			SetForegroundWindow();
			UINT id = popup.TrackPopupMenu(TPM_LEFTBUTTON|TPM_RETURNCMD, p.x, p.y, CWnd::FromHandle(hWnd), 0);
			PostMessage(WM_NULL);
			if(id & (1<<15)) 
			{
				pStreams[(id>>8)&0x3f]->Enable(id&0xff, AMSTREAMSELECTENABLE_ENABLE);
			}
			else if(id & (1<<14))
			{
				if(CComQIPtr<IVideoWindow> pVW = m_tbid->graph)
				{
					HWND hwnd;
					if(SUCCEEDED(pVW->get_Owner((OAHWND*)&hwnd))
					|| SUCCEEDED(pVW->get_MessageDrain((OAHWND*)&hwnd)))
						hWnd = hwnd;
				}
				CallPPage(m_tbid->graph, id&0xff, hWnd);
			}
		}
		break; 
		default: 
			break; 
	}
	return 0;
}
//
DWORD CALLBACK SystrayThreadProc(void* pParam)
{
	AFX_MANAGE_STATE(AfxGetStaticModuleState());
	CSystrayWindow wnd((SystrayIconData*)pParam);
	if(!wnd.CreateEx(0, AfxRegisterWndClass(0), _T("DVSWND"), WS_OVERLAPPED, CRect(0, 0, 0, 0), NULL, 0, NULL))
		return -1;
	((SystrayIconData*)pParam)->hSystrayWnd = wnd.m_hWnd;
	MSG msg;
	while(GetMessage(&msg, NULL/*wnd.m_hWnd*/, 0, 0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	return 0;
}
// TODO: replace this function
// hWnd == INVALID_HANDLE_VALUE - get name, hWnd != INVALID_HANDLE_VALUE - show ppage
static TCHAR* CallPPage(IFilterGraph* pGraph, int idx, HWND hWnd)
{
	int i = 0;
	bool fFound = false;
	WCHAR* wstr = NULL;
	CComPtr<IBaseFilter> pFilter;
	CAUUID caGUID;
	caGUID.pElems = NULL;
	BeginEnumFilters(pGraph, pEF, pBF)
	{
		CComQIPtr<ISpecifyPropertyPages> pSPS = pBF;
		if(!pSPS) continue;
		if(i == idx)
		{ 
			pFilter = pBF;
			pSPS->GetPages(&caGUID);
			wstr = _wcsdup(CStringW(GetFilterName(pBF))); // double char-wchar conversion happens in the non-unicode build, but anyway... :)
			break;
		}
		i++;
	}
	EndEnumFilters
	TCHAR* ret = NULL;
	if(pFilter)
	{
		if(hWnd != INVALID_HANDLE_VALUE)
		{
			ShowPPage(pFilter, hWnd);
		}
		else
		{
			if(ret = new TCHAR[wcslen(wstr)+1])
				_tcscpy(ret, CString(wstr));
		}
	}
	if(caGUID.pElems) CoTaskMemFree(caGUID.pElems);
	if(wstr) free(wstr);
	return(ret);
}

						