Media Player Classic - HC 源代码分析 4：核心类（CMainFrame）（3）

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Media Player Classic - HC 源代码分析系列文章列表：

Media Player Classic - HC 源代码分析 1：整体结构

Media Player Classic - HC 源代码分析 2：核心类（CMainFrame）（1）

Media Player Classic - HC 源代码分析 3：核心类（CMainFrame）（2）

Media Player Classic - HC 源代码分析 4：核心类（CMainFrame）（3）

Media Player Classic - HC 源代码分析 5：关于对话框（CAboutDlg）

Media Player Classic - HC 源代码分析 6：MediaInfo选项卡（CPPageFileMediaInfo）

Media Player Classic - HC 源代码分析 7：详细信息选项卡（CPPageFileInfoDetails）

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此前已经写了2篇文章介绍Media Player Classic - HC （mpc-hc）源代码中的核心类 CMainFrame：

Media Player Classic - HC 源代码分析 2：核心类（CMainFrame）（1）

Media Player Classic - HC 源代码分析 3：核心类（CMainFrame）（2）

此前的文章一直都是围绕着OpenMedia()以及其调用的函数进行分析的。研究的都是和文件打开有关系的功能。在这里再介绍一些其它函数。

在mpc-hc开始运行的时候，会调用OnCreate()：

<span style="font-family:Arial;font-size:12px;">//刚打开的时候加载
int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{if (__super::OnCreate(lpCreateStruct) == -1) {return -1;}//加载菜单m_popup.LoadMenu(IDR_POPUP);m_popupmain.LoadMenu(IDR_POPUPMAIN);// create a view to occupy the client area of the frame// 创建视频画面部分？if (!m_wndView.Create(nullptr, nullptr, AFX_WS_DEFAULT_VIEW,CRect(0, 0, 0, 0), this, AFX_IDW_PANE_FIRST, nullptr)) {TRACE(_T("Failed to create view window\n"));return -1;}// Should never be RTLedm_wndView.ModifyStyleEx(WS_EX_LAYOUTRTL, WS_EX_NOINHERITLAYOUT);// static bars//各种状态栏BOOL bResult = m_wndStatusBar.Create(this);if (bResult) {bResult = m_wndStatsBar.Create(this);}if (bResult) {bResult = m_wndInfoBar.Create(this);}if (bResult) {bResult = m_wndToolBar.Create(this);}if (bResult) {bResult = m_wndSeekBar.Create(this);}if (!bResult) {TRACE(_T("Failed to create all control bars\n"));return -1;      // fail to create}// 各种Barm_pFullscreenWnd = DEBUG_NEW CFullscreenWnd(this);m_bars.AddTail(&m_wndSeekBar);m_bars.AddTail(&m_wndToolBar);m_bars.AddTail(&m_wndInfoBar);m_bars.AddTail(&m_wndStatsBar);m_bars.AddTail(&m_wndStatusBar);m_wndSeekBar.Enable(false);// dockable bars// 可停靠的EnableDocking(CBRS_ALIGN_ANY);m_dockingbars.RemoveAll();m_wndSubresyncBar.Create(this, AFX_IDW_DOCKBAR_TOP, &m_csSubLock);m_wndSubresyncBar.SetBarStyle(m_wndSubresyncBar.GetBarStyle() | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC);m_wndSubresyncBar.EnableDocking(CBRS_ALIGN_ANY);m_wndSubresyncBar.SetHeight(200);m_dockingbars.AddTail(&m_wndSubresyncBar);m_wndPlaylistBar.Create(this, AFX_IDW_DOCKBAR_BOTTOM);m_wndPlaylistBar.SetBarStyle(m_wndPlaylistBar.GetBarStyle() | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC);m_wndPlaylistBar.EnableDocking(CBRS_ALIGN_ANY);m_wndPlaylistBar.SetHeight(100);m_dockingbars.AddTail(&m_wndPlaylistBar);m_wndPlaylistBar.LoadPlaylist(GetRecentFile());m_wndEditListEditor.Create(this, AFX_IDW_DOCKBAR_RIGHT);m_wndEditListEditor.SetBarStyle(m_wndEditListEditor.GetBarStyle() | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC);m_wndEditListEditor.EnableDocking(CBRS_ALIGN_ANY);m_dockingbars.AddTail(&m_wndEditListEditor);m_wndEditListEditor.SetHeight(100);m_wndCaptureBar.Create(this, AFX_IDW_DOCKBAR_LEFT);m_wndCaptureBar.SetBarStyle(m_wndCaptureBar.GetBarStyle() | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC);m_wndCaptureBar.EnableDocking(CBRS_ALIGN_LEFT | CBRS_ALIGN_RIGHT);m_dockingbars.AddTail(&m_wndCaptureBar);m_wndNavigationBar.Create(this, AFX_IDW_DOCKBAR_LEFT);m_wndNavigationBar.SetBarStyle(m_wndNavigationBar.GetBarStyle() | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC);m_wndNavigationBar.EnableDocking(CBRS_ALIGN_LEFT | CBRS_ALIGN_RIGHT);m_dockingbars.AddTail(&m_wndNavigationBar);m_wndShaderEditorBar.Create(this, AFX_IDW_DOCKBAR_TOP);m_wndShaderEditorBar.SetBarStyle(m_wndShaderEditorBar.GetBarStyle() | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC);m_wndShaderEditorBar.EnableDocking(CBRS_ALIGN_ANY);m_dockingbars.AddTail(&m_wndShaderEditorBar);// Hide all dockable bars by defaultPOSITION pos = m_dockingbars.GetHeadPosition();while (pos) {m_dockingbars.GetNext(pos)->ShowWindow(SW_HIDE);}m_fileDropTarget.Register(this);const CAppSettings& s = AfxGetAppSettings();// Load the controlsm_nCS = s.nCS;ShowControls(m_nCS);//是否在最前？SetAlwaysOnTop(s.iOnTop);//显示系统托盘图标ShowTrayIcon(s.fTrayIcon);//焦点SetFocus();//创建CGraphThread类的线程m_pGraphThread = (CGraphThread*)AfxBeginThread(RUNTIME_CLASS(CGraphThread));//设置。。if (m_pGraphThread) {m_pGraphThread->SetMainFrame(this);}if (s.nCmdlnWebServerPort != 0) {if (s.nCmdlnWebServerPort > 0) {StartWebServer(s.nCmdlnWebServerPort);} else if (s.fEnableWebServer) {StartWebServer(s.nWebServerPort);}}// Casimir666 : reload Shaders{CString strList = s.strShaderList;CString strRes;int curPos = 0;strRes = strList.Tokenize(_T("|"), curPos);while (!strRes.IsEmpty()) {m_shaderlabels.AddTail(strRes);strRes = strList.Tokenize(_T("|"), curPos);}}{CString strList = s.strShaderListScreenSpace;CString strRes;int curPos = 0;strRes = strList.Tokenize(_T("|"), curPos);while (!strRes.IsEmpty()) {m_shaderlabelsScreenSpace.AddTail(strRes);strRes = strList.Tokenize(_T("|"), curPos);}}m_bToggleShader = s.fToggleShader;m_bToggleShaderScreenSpace = s.fToggleShaderScreenSpace;//标题m_strTitle.LoadString(IDR_MAINFRAME);#ifdef MPCHC_LITEm_strTitle += _T(" Lite");
#endif//设置窗口标题SetWindowText(m_strTitle);m_Lcd.SetMediaTitle(LPCTSTR(m_strTitle));WTSRegisterSessionNotification();if (s.bNotifySkype) {m_pSkypeMoodMsgHandler.Attach(DEBUG_NEW SkypeMoodMsgHandler());m_pSkypeMoodMsgHandler->Connect(m_hWnd);}return 0;
}</span>

在mpc-hc关闭的时候，会调用OnDestroy()：

<span style="font-family:Arial;font-size:12px;">//关闭的时候加载
void CMainFrame::OnDestroy()
{WTSUnRegisterSessionNotification();//关闭系统托盘图标ShowTrayIcon(false);m_fileDropTarget.Revoke();//线程还在运行的话if (m_pGraphThread) {CAMMsgEvent e;//退出m_pGraphThread->PostThreadMessage(CGraphThread::TM_EXIT, 0, (LPARAM)&e);if (!e.Wait(5000)) {TRACE(_T("ERROR: Must call TerminateThread() on CMainFrame::m_pGraphThread->m_hThread\n"));TerminateThread(m_pGraphThread->m_hThread, (DWORD) - 1);}}if (m_pFullscreenWnd) {if (m_pFullscreenWnd->IsWindow()) {m_pFullscreenWnd->DestroyWindow();}delete m_pFullscreenWnd;}__super::OnDestroy();
}</span>

在关闭一个媒体的时候，会调用OnClose()：

//关闭的时候加载
void CMainFrame::OnClose()
{//获取设置CAppSettings& s = AfxGetAppSettings();// Casimir666 : save shaders list{POSITION pos;CString strList = "";pos = m_shaderlabels.GetHeadPosition();while (pos) {strList += m_shaderlabels.GetAt(pos) + "|";m_dockingbars.GetNext(pos);}s.strShaderList = strList;}{POSITION pos;CString  strList = "";pos = m_shaderlabelsScreenSpace.GetHeadPosition();while (pos) {strList += m_shaderlabelsScreenSpace.GetAt(pos) + "|";m_dockingbars.GetNext(pos);}s.strShaderListScreenSpace = strList;}s.fToggleShader = m_bToggleShader;s.fToggleShaderScreenSpace = m_bToggleShaderScreenSpace;s.dZoomX = m_ZoomX;s.dZoomY = m_ZoomY;//存储播放列表m_wndPlaylistBar.SavePlaylist();//存储控制条SaveControlBars();ShowWindow(SW_HIDE);//关闭媒体（非private）CloseMedia();s.WinLircClient.DisConnect();s.UIceClient.DisConnect();SendAPICommand(CMD_DISCONNECT, L"\0");  // according to CMD_NOTIFYENDOFSTREAM (ctrl+f it here), you're not supposed to send NULL here//调用父类onclose__super::OnClose();
}

同时还有一个定时器函数OnTimer()。根据不同的nIDEvent做不同的处理操作。

//定时刷新的操作
void CMainFrame::OnTimer(UINT_PTR nIDEvent)
{switch (nIDEvent) {//当前播放到的位置case TIMER_STREAMPOSPOLLER:if (m_iMediaLoadState == MLS_LOADED) {REFERENCE_TIME rtNow = 0, rtDur = 0;//播放方式是文件的时候（还可以是DVD或者摄像头）if (GetPlaybackMode() == PM_FILE) {//当前位置m_pMS->GetCurrentPosition(&rtNow);//时常m_pMS->GetDuration(&rtDur);// Casimir666 : autosave subtitle sync after playif ((m_nCurSubtitle >= 0) && (m_rtCurSubPos != rtNow)) {if (m_lSubtitleShift != 0) {if (m_wndSubresyncBar.SaveToDisk()) {m_OSD.DisplayMessage(OSD_TOPLEFT, ResStr(IDS_AG_SUBTITLES_SAVED), 500);} else {m_OSD.DisplayMessage(OSD_TOPLEFT, ResStr(IDS_MAINFRM_4));}}m_nCurSubtitle   = -1;m_lSubtitleShift = 0;}if (!m_fEndOfStream) {CAppSettings& s = AfxGetAppSettings();if (m_bRememberFilePos) {FILE_POSITION* filePosition = s.filePositions.GetLatestEntry();if (filePosition) {filePosition->llPosition = rtNow;LARGE_INTEGER time;QueryPerformanceCounter(&time);LARGE_INTEGER freq;QueryPerformanceFrequency(&freq);if ((time.QuadPart - m_liLastSaveTime.QuadPart) >= 30 * freq.QuadPart) { // save every half of minutem_liLastSaveTime = time;s.filePositions.SaveLatestEntry();}}}}if (m_rtDurationOverride >= 0) {rtDur = m_rtDurationOverride;}//设置滑动条控件的参数（位置等。。。）g_bNoDuration = rtDur <= 0;m_wndSeekBar.Enable(rtDur > 0);m_wndSeekBar.SetRange(0, rtDur);m_wndSeekBar.SetPos(rtNow);m_OSD.SetRange(0, rtDur);m_OSD.SetPos(rtNow);m_Lcd.SetMediaRange(0, rtDur);m_Lcd.SetMediaPos(rtNow);} else if (GetPlaybackMode() == PM_CAPTURE) {//如果是摄像头的话，就没有时长信息了m_pMS->GetCurrentPosition(&rtNow);if (m_fCapturing && m_wndCaptureBar.m_capdlg.m_pMux) {CComQIPtr<IMediaSeeking> pMuxMS = m_wndCaptureBar.m_capdlg.m_pMux;if (!pMuxMS || FAILED(pMuxMS->GetCurrentPosition(&rtNow))) {rtNow = 0;}}if (m_rtDurationOverride >= 0) {rtDur = m_rtDurationOverride;}g_bNoDuration = rtDur <= 0;m_wndSeekBar.Enable(false);m_wndSeekBar.SetRange(0, rtDur);m_wndSeekBar.SetPos(rtNow);m_OSD.SetRange(0, rtDur);m_OSD.SetPos(rtNow);m_Lcd.SetMediaRange(0, rtDur);m_Lcd.SetMediaPos(rtNow);}if (m_pCAP && GetPlaybackMode() != PM_FILE) {g_bExternalSubtitleTime = true;if (m_pDVDI) {DVD_PLAYBACK_LOCATION2 Location;if (m_pDVDI->GetCurrentLocation(&Location) == S_OK) {double fps = Location.TimeCodeFlags == DVD_TC_FLAG_25fps ? 25.0: Location.TimeCodeFlags == DVD_TC_FLAG_30fps ? 30.0: Location.TimeCodeFlags == DVD_TC_FLAG_DropFrame ? 29.97: 25.0;REFERENCE_TIME rtTimeCode = HMSF2RT(Location.TimeCode, fps);m_pCAP->SetTime(rtTimeCode);} else {m_pCAP->SetTime(/*rtNow*/m_wndSeekBar.GetPos());}} else {// Set rtNow to support DVB subtitlem_pCAP->SetTime(rtNow);}} else {g_bExternalSubtitleTime = false;}}break;case TIMER_STREAMPOSPOLLER2:if (m_iMediaLoadState == MLS_LOADED) {__int64 start, stop, pos;m_wndSeekBar.GetRange(start, stop);pos = m_wndSeekBar.GetPosReal();GUID tf;m_pMS->GetTimeFormat(&tf);if (GetPlaybackMode() == PM_CAPTURE && !m_fCapturing) {CString str = ResStr(IDS_CAPTURE_LIVE);long lChannel = 0, lVivSub = 0, lAudSub = 0;if (m_pAMTuner&& m_wndCaptureBar.m_capdlg.IsTunerActive()&& SUCCEEDED(m_pAMTuner->get_Channel(&lChannel, &lVivSub, &lAudSub))) {CString ch;ch.Format(_T(" (ch%d)"), lChannel);str += ch;}m_wndStatusBar.SetStatusTimer(str);} else {m_wndStatusBar.SetStatusTimer(pos, stop, !!m_wndSubresyncBar.IsWindowVisible(), &tf);if (m_bRemainingTime) {m_OSD.DisplayMessage(OSD_TOPLEFT, m_wndStatusBar.GetStatusTimer());}}m_wndSubresyncBar.SetTime(pos);if (m_pCAP && GetMediaState() == State_Paused) {m_pCAP->Paint(false);}}break;case TIMER_FULLSCREENCONTROLBARHIDER: {CPoint p;GetCursorPos(&p);CRect r;GetWindowRect(r);bool fCursorOutside = !r.PtInRect(p);CWnd* pWnd = WindowFromPoint(p);if (pWnd && (m_wndView == *pWnd || m_wndView.IsChild(pWnd) || fCursorOutside)) {if (AfxGetAppSettings().nShowBarsWhenFullScreenTimeOut >= 0) {ShowControls(CS_NONE);}}}break;case TIMER_FULLSCREENMOUSEHIDER: {CPoint p;GetCursorPos(&p);CRect r;GetWindowRect(r);bool fCursorOutside = !r.PtInRect(p);CWnd* pWnd = WindowFromPoint(p);if (IsD3DFullScreenMode()) {if (pWnd && !m_bInOptions && *pWnd == *m_pFullscreenWnd) {m_pFullscreenWnd->ShowCursor(false);}KillTimer(TIMER_FULLSCREENMOUSEHIDER);} else {if (pWnd && !m_bInOptions && (m_wndView == *pWnd || m_wndView.IsChild(pWnd) || fCursorOutside)) {m_fHideCursor = true;SetCursor(nullptr);}}}break;//统计量case TIMER_STATS: {//接收端质量信息：抖动，抖动，视音频同步情况等。。。if (m_pQP) {CString rate;rate.Format(_T("%.2f"), m_dSpeedRate);rate = _T("(") + rate + _T("x)");//信息CString info;int val = 0;//平均帧率m_pQP->get_AvgFrameRate(&val); // We hang here due to a lock that never gets released.info.Format(_T("%d.%02d %s"), val / 100, val % 100, rate);m_wndStatsBar.SetLine(ResStr(IDS_AG_FRAMERATE), info);int avg, dev;//抖动m_pQP->get_AvgSyncOffset(&avg);m_pQP->get_DevSyncOffset(&dev);info.Format(ResStr(IDS_STATSBAR_SYNC_OFFSET_FORMAT), avg, dev);m_wndStatsBar.SetLine(ResStr(IDS_STATSBAR_SYNC_OFFSET), info);//掉帧int drawn, dropped;m_pQP->get_FramesDrawn(&drawn);m_pQP->get_FramesDroppedInRenderer(&dropped);info.Format(IDS_MAINFRM_6, drawn, dropped);m_wndStatsBar.SetLine(ResStr(IDS_AG_FRAMES), info);//抖动m_pQP->get_Jitter(&val);info.Format(_T("%d ms"), val);m_wndStatsBar.SetLine(ResStr(IDS_STATSBAR_JITTER), info);}//缓存信息if (m_pBI) {CAtlList<CString> sl;//获取数量for (int i = 0, j = m_pBI->GetCount(); i < j; i++) {int samples, size;//获取缓存状态if (S_OK == m_pBI->GetStatus(i, samples, size)) {CString str;str.Format(_T("[%d]: %03d/%d KB"), i, samples, size / 1024);sl.AddTail(str);}}if (!sl.IsEmpty()) {CString str;str.Format(_T("%s (p%u)"), Implode(sl, ' '), m_pBI->GetPriority());m_wndStatsBar.SetLine(ResStr(IDS_AG_BUFFERS), str);}}//比特率信息CInterfaceList<IBitRateInfo> pBRIs;BeginEnumFilters(m_pGB, pEF, pBF) {BeginEnumPins(pBF, pEP, pPin) {if (CComQIPtr<IBitRateInfo> pBRI = pPin) {pBRIs.AddTail(pBRI);}}EndEnumPins;if (!pBRIs.IsEmpty()) {CAtlList<CString> sl;POSITION pos = pBRIs.GetHeadPosition();for (int i = 0; pos; i++) {//比特率接口IBitRateInfo* pBRI = pBRIs.GetNext(pos);//当前比特率DWORD cur = pBRI->GetCurrentBitRate() / 1000;//平均比特率DWORD avg = pBRI->GetAverageBitRate() / 1000;if (avg == 0) {continue;}//添加到字符串CString str;if (cur != avg) {str.Format(_T("[%d]: %u/%u Kb/s"), i, avg, cur);} else {str.Format(_T("[%d]: %u Kb/s"), i, avg);}//加入sl.AddTail(str);}if (!sl.IsEmpty()) {m_wndStatsBar.SetLine(ResStr(IDS_STATSBAR_BITRATE), Implode(sl, ' ') + ResStr(IDS_STATSBAR_BITRATE_AVG_CUR));}break;}}EndEnumFilters;if (GetPlaybackMode() == PM_DVD) { // we also use this timer to update the info panel for DVD playbackULONG ulAvailable, ulCurrent;// LocationCString Location('-');DVD_PLAYBACK_LOCATION2 loc;ULONG ulNumOfVolumes, ulVolume;DVD_DISC_SIDE Side;ULONG ulNumOfTitles;ULONG ulNumOfChapters;if (SUCCEEDED(m_pDVDI->GetCurrentLocation(&loc))&& SUCCEEDED(m_pDVDI->GetNumberOfChapters(loc.TitleNum, &ulNumOfChapters))&& SUCCEEDED(m_pDVDI->GetDVDVolumeInfo(&ulNumOfVolumes, &ulVolume, &Side, &ulNumOfTitles))) {Location.Format(IDS_MAINFRM_9,ulVolume, ulNumOfVolumes,loc.TitleNum, ulNumOfTitles,loc.ChapterNum, ulNumOfChapters);ULONG tsec = (loc.TimeCode.bHours * 3600)+ (loc.TimeCode.bMinutes * 60)+ (loc.TimeCode.bSeconds);/* This might not always work, such as on resume */if (loc.ChapterNum != m_lCurrentChapter) {m_lCurrentChapter = loc.ChapterNum;m_lChapterStartTime = tsec;} else {/* If a resume point was used, and the user chapter jumps,then it might do some funky time jumping.  Try to 'fix' thechapter start time if this happens */if (m_lChapterStartTime > tsec) {m_lChapterStartTime = tsec;}}}m_wndInfoBar.SetLine(ResStr(IDS_INFOBAR_LOCATION), Location);// VideoCString Video('-');DVD_VideoAttributes VATR;if (SUCCEEDED(m_pDVDI->GetCurrentAngle(&ulAvailable, &ulCurrent))&& SUCCEEDED(m_pDVDI->GetCurrentVideoAttributes(&VATR))) {Video.Format(IDS_MAINFRM_10,ulCurrent, ulAvailable,VATR.ulSourceResolutionX, VATR.ulSourceResolutionY, VATR.ulFrameRate,VATR.ulAspectX, VATR.ulAspectY);}m_wndInfoBar.SetLine(ResStr(IDS_INFOBAR_VIDEO), Video);// AudioCString Audio('-');DVD_AudioAttributes AATR;if (SUCCEEDED(m_pDVDI->GetCurrentAudio(&ulAvailable, &ulCurrent))&& SUCCEEDED(m_pDVDI->GetAudioAttributes(ulCurrent, &AATR))) {CString lang;if (AATR.Language) {int len = GetLocaleInfo(AATR.Language, LOCALE_SENGLANGUAGE, lang.GetBuffer(64), 64);lang.ReleaseBufferSetLength(max(len - 1, 0));} else {lang.Format(IDS_AG_UNKNOWN, ulCurrent + 1);}switch (AATR.LanguageExtension) {case DVD_AUD_EXT_NotSpecified:default:break;case DVD_AUD_EXT_Captions:lang += _T(" (Captions)");break;case DVD_AUD_EXT_VisuallyImpaired:lang += _T(" (Visually Impaired)");break;case DVD_AUD_EXT_DirectorComments1:lang += _T(" (Director Comments 1)");break;case DVD_AUD_EXT_DirectorComments2:lang += _T(" (Director Comments 2)");break;}CString format = GetDVDAudioFormatName(AATR);Audio.Format(IDS_MAINFRM_11,lang,format,AATR.dwFrequency,AATR.bQuantization,AATR.bNumberOfChannels,(AATR.bNumberOfChannels > 1 ? ResStr(IDS_MAINFRM_13) : ResStr(IDS_MAINFRM_12)));m_wndStatusBar.SetStatusBitmap(AATR.bNumberOfChannels == 1 ? IDB_AUDIOTYPE_MONO: AATR.bNumberOfChannels >= 2 ? IDB_AUDIOTYPE_STEREO: IDB_AUDIOTYPE_NOAUDIO);}m_wndInfoBar.SetLine(ResStr(IDS_INFOBAR_AUDIO), Audio);// SubtitlesCString Subtitles('-');BOOL bIsDisabled;DVD_SubpictureAttributes SATR;if (SUCCEEDED(m_pDVDI->GetCurrentSubpicture(&ulAvailable, &ulCurrent, &bIsDisabled))&& SUCCEEDED(m_pDVDI->GetSubpictureAttributes(ulCurrent, &SATR))) {CString lang;int len = GetLocaleInfo(SATR.Language, LOCALE_SENGLANGUAGE, lang.GetBuffer(64), 64);lang.ReleaseBufferSetLength(max(len - 1, 0));switch (SATR.LanguageExtension) {case DVD_SP_EXT_NotSpecified:default:break;case DVD_SP_EXT_Caption_Normal:lang += _T("");break;case DVD_SP_EXT_Caption_Big:lang += _T(" (Big)");break;case DVD_SP_EXT_Caption_Children:lang += _T(" (Children)");break;case DVD_SP_EXT_CC_Normal:lang += _T(" (CC)");break;case DVD_SP_EXT_CC_Big:lang += _T(" (CC Big)");break;case DVD_SP_EXT_CC_Children:lang += _T(" (CC Children)");break;case DVD_SP_EXT_Forced:lang += _T(" (Forced)");break;case DVD_SP_EXT_DirectorComments_Normal:lang += _T(" (Director Comments)");break;case DVD_SP_EXT_DirectorComments_Big:lang += _T(" (Director Comments, Big)");break;case DVD_SP_EXT_DirectorComments_Children:lang += _T(" (Director Comments, Children)");break;}if (bIsDisabled) {lang = _T("-");}Subtitles.Format(_T("%s"),lang);}m_wndInfoBar.SetLine(ResStr(IDS_INFOBAR_SUBTITLES), Subtitles);} else if (GetPlaybackMode() == PM_CAPTURE && AfxGetAppSettings().iDefaultCaptureDevice == 1) {CComQIPtr<IBDATuner> pTun = m_pGB;BOOLEAN bPresent;BOOLEAN bLocked;LONG lDbStrength;LONG lPercentQuality;CString Signal;if (SUCCEEDED(pTun->GetStats(bPresent, bLocked, lDbStrength, lPercentQuality)) && bPresent) {Signal.Format(ResStr(IDS_STATSBAR_SIGNAL_FORMAT), (int)lDbStrength, lPercentQuality);m_wndStatsBar.SetLine(ResStr(IDS_STATSBAR_SIGNAL), Signal);}} else if (GetPlaybackMode() == PM_FILE) {UpdateChapterInInfoBar();}if (GetMediaState() == State_Running && !m_fAudioOnly) {BOOL fActive = FALSE;if (SystemParametersInfo(SPI_GETSCREENSAVEACTIVE, 0,       &fActive, 0)) {SystemParametersInfo(SPI_SETSCREENSAVEACTIVE, FALSE,   nullptr,     SPIF_SENDWININICHANGE); // this might not be needed at all...SystemParametersInfo(SPI_SETSCREENSAVEACTIVE, fActive, nullptr,     SPIF_SENDWININICHANGE);}fActive = FALSE;if (SystemParametersInfo(SPI_GETPOWEROFFACTIVE, 0,       &fActive, 0)) {SystemParametersInfo(SPI_SETPOWEROFFACTIVE, FALSE,   nullptr,     SPIF_SENDWININICHANGE); // this might not be needed at all...SystemParametersInfo(SPI_SETPOWEROFFACTIVE, fActive, nullptr,     SPIF_SENDWININICHANGE);}// prevent screensaver activate, monitor sleep/turn off after playbackSetThreadExecutionState(ES_SYSTEM_REQUIRED | ES_DISPLAY_REQUIRED);}}break;case TIMER_STATUSERASER: {KillTimer(TIMER_STATUSERASER);m_playingmsg.Empty();}break;case TIMER_DVBINFO_UPDATER:KillTimer(TIMER_DVBINFO_UPDATER);ShowCurrentChannelInfo(false, false);break;}__super::OnTimer(nIDEvent);
}

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===================================================== Media Player Classic - HC 源代码分析系列文章列表: Media P ...
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前面有两篇文章分析了Media Player Classic - HC(mpc-hc)的源代码中的核心类 CMainFrame: Media Player Classic - HC 源代码分析 2:核 ...
Media Player Classic - HC 源代码分析 9：CFGManager类详细分析（CFGManager）
上一篇文章分析了Media Player Classic - HC(mpc-hc)的源代码中的CFGManager类的RenderFile函数: Media Player Classic - HC 源 ...
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前面有两篇文章讲解了PIN连接过程中需要做2件事情: 媒体类型的协商分配器的协商推模式和拉模式关于媒体类型的协商调用的接口都一样,主要的区别还是在分配器的协商. 前面讲解的分配器的协商过程是推模式 ...

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