utils/wxMMedia2/board/mmboard.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        mmboard.cpp
   3 // Purpose:     Multimedia Library sample
   4 // Author:      Guilhem Lavaux (created from minimal by J. Smart)
   5 // Modified by:
   6 // Created:     13/02/2000
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Guilhem Lavaux
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19 #ifdef __GNUG__
  20     #pragma implementation "mmboard.cpp"
  21 #endif
  22
  23 // For compilers that support precompilation, includes "wx/wx.h".
  24 #include "wx/wxprec.h"
  25
  26 #ifdef __BORLANDC__
  27     #pragma hdrstop
  28 #endif
  29
  30 // for all others, include the necessary headers (this file is usually all you
  31 // need because it includes almost all "standard" wxWindows headers
  32 #ifndef WX_PRECOMP
  33     #include "wx/wx.h"
  34 #endif
  35
  36 // ----------------------------------------------------------------------------
  37 // ressources
  38 // ----------------------------------------------------------------------------
  39 // the application icon
  40 #if defined(__WXGTK__) || defined(__WXMOTIF__)
  41     #include "mondrian.xpm"
  42 #endif
  43
  44 // include multimedia classes
  45 #include "sndbase.h"
  46 #ifdef __WIN32__
  47     #include "sndwin.h"
  48 #endif
  49 #ifdef __UNIX__
  50     #include "sndoss.h"
  51     #include "sndesd.h"
  52 #endif
  53
  54 #include "wx/statline.h"
  55 #include "wx/stattext.h"
  56
  57 // include personnal classes
  58 #include "mmboard.h"
  59 #include "mmbman.h"
  60
  61 #include "play.xpm"
  62 #include "stop.xpm"
  63 #include "eject.xpm"
  64 #include "pause.xpm"
  65
  66 // ----------------------------------------------------------------------------
  67 // private classes
  68 // ----------------------------------------------------------------------------
  69
  70 // Main Multimedia Board frame
  71 class MMBoardFrame : public wxFrame
  72 {
  73 public:
  74     // ctor(s)
  75     MMBoardFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
  76     // dtor
  77     ~MMBoardFrame();
  78
  79     // event handlers
  80     void OnQuit(wxCommandEvent& event);
  81     void OnAbout(wxCommandEvent& event);
  82     void OnOpen(wxCommandEvent& event);
  83     void OnPlay(wxCommandEvent& event);
  84     void OnStop(wxCommandEvent& event);
  85     void OnPause(wxCommandEvent& event);
  86     void OnEject(wxCommandEvent& event);
  87     void OnRefreshInfo(wxEvent& event);
  88     void OnSetPosition(wxCommandEvent& event);
  89
  90     void OpenVideoWindow();
  91     void CloseVideoWindow();
  92
  93 private:
  94     // any class wishing to process wxWindows events must use this macro
  95     DECLARE_EVENT_TABLE()
  96
  97 private:
  98     void UpdateMMedInfo();
  99     void UpdateInfoText();
 100
 101     MMBoardFile *m_opened_file;
 102
 103     wxSlider *m_positionSlider;
 104     wxBitmapButton *m_playButton, *m_pauseButton, *m_stopButton, *m_ejectButton;
 105     wxStaticText *m_fileType, *m_infoText;
 106     wxWindow *m_video_window;
 107
 108     wxPanel *m_panel;
 109     wxSizer *m_sizer;
 110
 111     wxTimer *m_refreshTimer;
 112 };
 113
 114 // ----------------------------------------------------------------------------
 115 // constants
 116 // ----------------------------------------------------------------------------
 117
 118 // IDs for the controls and the menu commands
 119 enum
 120 {
 121     // menu items
 122     MMBoard_Quit = 1,
 123     MMBoard_Open,
 124     MMBoard_About,
 125     MMBoard_PositionSlider,
 126     MMBoard_PlayButton,
 127     MMBoard_PauseButton,
 128     MMBoard_ResumeButton,
 129     MMBoard_StopButton,
 130     MMBoard_EjectButton,
 131     MMBoard_RefreshInfo
 132 };
 133
 134 // ----------------------------------------------------------------------------
 135 // event tables and other macros for wxWindows
 136 // ----------------------------------------------------------------------------
 137
 138 BEGIN_EVENT_TABLE(MMBoardFrame, wxFrame)
 139   EVT_MENU(MMBoard_Quit,  MMBoardFrame::OnQuit)
 140   EVT_MENU(MMBoard_About, MMBoardFrame::OnAbout)
 141   EVT_MENU(MMBoard_Open, MMBoardFrame::OnOpen)
 142   EVT_BUTTON(MMBoard_PlayButton, MMBoardFrame::OnPlay)
 143   EVT_BUTTON(MMBoard_StopButton, MMBoardFrame::OnStop)
 144   EVT_BUTTON(MMBoard_PauseButton, MMBoardFrame::OnPause)
 145   EVT_BUTTON(MMBoard_EjectButton, MMBoardFrame::OnEject)
 146   EVT_SLIDER(MMBoard_PositionSlider, MMBoardFrame::OnSetPosition)
 147   EVT_CUSTOM(wxEVT_TIMER, MMBoard_RefreshInfo, MMBoardFrame::OnRefreshInfo)
 148 END_EVENT_TABLE()
 149
 150 // ---------------------------------------------------------------------------
 151 // Main board application launcher
 152 // ---------------------------------------------------------------------------
 153
 154 IMPLEMENT_APP(MMBoardApp)
 155
 156 // ============================================================================
 157 // implementation
 158 // ============================================================================
 159
 160 // ----------------------------------------------------------------------------
 161 // the application class
 162 // ----------------------------------------------------------------------------
 163
 164 bool MMBoardApp::OnInit()
 165 {
 166     // create the main application window
 167     MMBoardFrame *frame = new MMBoardFrame("Multimedia Board",
 168                                  wxPoint(50, 50), wxSize(450, 340));
 169
 170     // and show it (the frames, unlike simple controls, are not shown when
 171     // created initially)
 172     frame->Show(TRUE);
 173
 174     m_caps = TestMultimediaCaps();
 175
 176     if (!m_caps) {
 177       wxMessageBox("Your system has no multimedia capabilities. We are exiting now.", "Major error !", wxOK | wxICON_ERROR, NULL);
 178       return FALSE;
 179     }
 180
 181     wxString msg;
 182     msg.Printf("Detected : %s%s%s", (m_caps & MM_SOUND_OSS) ? "OSS " : "",
 183                                     (m_caps & MM_SOUND_ESD) ? "ESD " : "",
 184                                     (m_caps & MM_SOUND_WIN) ? "WIN" : "");
 185
 186     wxMessageBox(msg, "Good !", wxOK | wxICON_INFORMATION, NULL);
 187
 188     // success: wxApp::OnRun() will be called which will enter the main message
 189     // loop and the application will run. If we returned FALSE here, the
 190     // application would exit immediately.
 191     return TRUE;
 192 }
 193
 194 wxUint8 MMBoardApp::TestMultimediaCaps()
 195 {
 196     wxSoundStream *dev;
 197     wxUint8 caps;
 198
 199     caps = 0;
 200
 201 #ifdef __UNIX__
 202     // We now test the ESD support
 203
 204     dev = new wxSoundStreamESD();
 205     if (dev->GetError() == wxSOUND_NOERROR)
 206         caps |= MM_SOUND_ESD;
 207     delete dev;
 208
 209     // We test the OSS (Open Sound System) support.
 210     // WARNING: There is a conflict between ESD and ALSA
 211
 212     dev = new wxSoundStreamOSS();
 213     if (dev->GetError() == wxSOUND_NOERROR)
 214         caps |= MM_SOUND_OSS;
 215     delete dev;
 216 #endif
 217
 218 #ifdef __WIN32__
 219     // We test the Windows sound support.
 220
 221     dev = new wxSoundStreamWin();
 222     if (dev->GetError() == wxSOUND_NOERR)
 223         caps |= MM_SOUND_WIN;
 224     delete dev;
 225 #endif
 226
 227     return caps;
 228 }
 229
 230 // ----------------------------------------------------------------------------
 231 // main frame
 232 // ----------------------------------------------------------------------------
 233
 234 // frame constructor
 235 MMBoardFrame::MMBoardFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 236        : wxFrame((wxFrame *)NULL, -1, title, pos, size)
 237 {
 238 #ifdef __WXMAC__
 239     // we need this in order to allow the about menu relocation, since ABOUT is
 240     // not the default id of the about menu
 241     wxApp::s_macAboutMenuItemId = MMBoard_About;
 242 #endif
 243
 244     // set the frame icon
 245     SetIcon(wxICON(mondrian));
 246
 247     // create a menu bar
 248     wxMenu *menuFile = new wxMenu(wxT(""), wxMENU_TEAROFF);
 249
 250     // the "About" item should be in the help menu
 251     wxMenu *helpMenu = new wxMenu;
 252     helpMenu->Append(MMBoard_About, wxT("&About...\tCtrl-A"), wxT("Show about dialog"));
 253
 254     menuFile->Append(MMBoard_Open, wxT("&Open\tAlt-O"), wxT("Open file"));
 255     menuFile->AppendSeparator();
 256     menuFile->Append(MMBoard_Quit, wxT("E&xit\tAlt-X"), wxT("Quit this program"));
 257
 258     // now append the freshly created menu to the menu bar...
 259     wxMenuBar *menuBar = new wxMenuBar();
 260     menuBar->Append(menuFile, wxT("&File"));
 261     menuBar->Append(helpMenu, wxT("&Help"));
 262
 263     // ... and attach this menu bar to the frame
 264     SetMenuBar(menuBar);
 265
 266 #if wxUSE_STATUSBAR
 267     // create a status bar just for fun (by default with 1 pane only)
 268     CreateStatusBar(3);
 269     SetStatusText(wxT("Welcome to wxWindows!"));
 270 #endif // wxUSE_STATUSBAR
 271
 272     // Misc variables
 273     m_opened_file = NULL;
 274
 275     m_panel = new wxPanel(this, -1);
 276
 277     // Initialize main slider
 278     m_positionSlider = new wxSlider( m_panel, MMBoard_PositionSlider, 0, 0, 60,
 279                                      wxDefaultPosition, wxSize(300, -1),
 280                                      wxSL_HORIZONTAL | wxSL_AUTOTICKS);
 281     m_positionSlider->SetPageSize(60);  // 60 secs
 282     m_positionSlider->Enable(FALSE);
 283
 284     // Initialize info panel
 285     wxPanel *infoPanel = new wxPanel( m_panel, -1);
 286     infoPanel->SetBackgroundColour(*wxBLACK);
 287     infoPanel->SetForegroundColour(*wxWHITE);
 288
 289     wxBoxSizer *infoSizer = new wxBoxSizer(wxVERTICAL);
 290
 291     m_fileType = new wxStaticText(infoPanel, -1, wxT(""));
 292     wxStaticLine *line = new wxStaticLine(infoPanel, -1);
 293     m_infoText = new wxStaticText(infoPanel, -1, "");
 294
 295     UpdateInfoText();
 296
 297     infoSizer->Add(m_fileType, 0, wxGROW | wxALL, 1);
 298     infoSizer->Add(line, 0, wxGROW | wxCENTRE, 20);
 299     infoSizer->Add(m_infoText, 0, wxGROW | wxALL, 1);
 300
 301     infoPanel->SetSizer(infoSizer);
 302     infoPanel->SetAutoLayout(TRUE);
 303
 304     // Bitmap button panel
 305     wxBoxSizer *buttonSizer = new wxBoxSizer(wxHORIZONTAL);
 306
 307     wxBitmap *play_bmp = new wxBitmap(play_back_xpm);
 308     wxBitmap *stop_bmp = new wxBitmap(stop_back_xpm);
 309     wxBitmap *eject_bmp = new wxBitmap(eject_xpm);
 310     wxBitmap *pause_bmp = new wxBitmap(pause_xpm);
 311
 312     m_playButton = new wxBitmapButton(m_panel, MMBoard_PlayButton, *play_bmp);
 313     m_playButton->Enable(FALSE);
 314     m_pauseButton = new wxBitmapButton(m_panel, MMBoard_PauseButton, *pause_bmp);
 315     m_pauseButton->Enable(FALSE);
 316     m_stopButton = new wxBitmapButton(m_panel, MMBoard_StopButton, *stop_bmp);
 317     m_stopButton->Enable(FALSE);
 318     m_ejectButton = new wxBitmapButton(m_panel, MMBoard_EjectButton, *eject_bmp);
 319     m_ejectButton->Enable(FALSE);
 320
 321     buttonSizer->Add(m_playButton, 0, wxALL, 2);
 322     buttonSizer->Add(m_pauseButton, 0, wxALL, 2);
 323     buttonSizer->Add(m_stopButton, 0, wxALL, 2);
 324     buttonSizer->Add(m_ejectButton, 0, wxALL, 2);
 325
 326     // Top sizer
 327     m_sizer = new wxBoxSizer(wxVERTICAL);
 328     m_sizer->Add(new wxStaticLine(m_panel, -1), 0, wxGROW | wxCENTRE, 0);
 329     m_sizer->Add(m_positionSlider, 0, wxCENTRE | wxGROW | wxALL, 2);
 330     m_sizer->Add(new wxStaticLine(m_panel, -1), 0, wxGROW | wxCENTRE, 0);
 331     m_sizer->Add(buttonSizer, 0, wxALL, 0);
 332     m_sizer->Add(new wxStaticLine(m_panel, -1), 0, wxGROW | wxCENTRE, 0);
 333     m_sizer->Add(infoPanel, 1, wxCENTRE | wxGROW, 0);
 334
 335     m_panel->SetSizer(m_sizer);
 336     m_panel->SetAutoLayout(TRUE);
 337     m_sizer->Fit(this);
 338     m_sizer->SetSizeHints(this);
 339
 340     // Timer
 341     m_refreshTimer = new wxTimer(this, MMBoard_RefreshInfo);
 342
 343     // Video window
 344     m_video_window = NULL;
 345
 346     // Multimedia file
 347     m_opened_file = NULL;
 348 }
 349
 350 MMBoardFrame::~MMBoardFrame()
 351 {
 352     if (m_opened_file)
 353         delete m_opened_file;
 354
 355     delete m_refreshTimer;
 356 }
 357
 358 void MMBoardFrame::OpenVideoWindow()
 359 {
 360   if (m_video_window)
 361     return;
 362
 363   m_video_window = new wxWindow(m_panel, -1, wxDefaultPosition, wxSize(200, 200));
 364   m_video_window->SetBackgroundColour(*wxBLACK);
 365   m_sizer->Prepend(m_video_window, 2, wxGROW | wxSHRINK | wxCENTRE, 1);
 366
 367   m_sizer->Fit(this);
 368 }
 369
 370 void MMBoardFrame::CloseVideoWindow()
 371 {
 372     if (!m_video_window)
 373         return;
 374
 375     m_sizer->Remove(m_video_window);
 376     delete m_video_window;
 377     m_video_window = NULL;
 378
 379     m_sizer->Fit(this);
 380 }
 381
 382 // event handlers
 383
 384 void MMBoardFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 385 {
 386     // TRUE is to force the frame to close
 387     Close(TRUE);
 388 }
 389
 390 void MMBoardFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 391 {
 392     wxString msg;
 393     msg.Printf( wxT("wxWindows Multimedia board v1.0a, wxMMedia v2.0a:\n")
 394                 wxT("an example of the capabilities of the wxWindows multimedia classes.\n")
 395                 wxT("Copyright 1999, 2000, Guilhem Lavaux.\n"));
 396
 397     wxMessageBox(msg, "About MMBoard", wxOK | wxICON_INFORMATION, this);
 398 }
 399
 400 void MMBoardFrame::OnOpen(wxCommandEvent& WXUNUSED(event))
 401 {
 402     wxString selected_file;
 403
 404     if (m_opened_file) {
 405         if (!m_opened_file->IsStopped()) {
 406             wxCommandEvent event2;
 407             OnStop(event2);
 408         }
 409         delete m_opened_file;
 410     }
 411
 412     // select a file to be opened
 413     selected_file = wxLoadFileSelector("multimedia", "*", NULL, this);
 414     if (selected_file.IsNull())
 415         return;
 416
 417     m_opened_file = MMBoardManager::Open(selected_file);
 418
 419     // Change the range values of the slider.
 420     MMBoardTime length;
 421
 422     length = m_opened_file->GetLength();
 423     m_positionSlider->SetRange(0, length.hours * 3600 + length.minutes * 60 + length.seconds);
 424
 425     // Update misc info
 426     UpdateMMedInfo();
 427
 428     SetStatusText(selected_file, 2);
 429
 430     // Update info text
 431     UpdateInfoText();
 432
 433     // Enable a few buttons
 434     m_playButton->Enable(TRUE);
 435     m_ejectButton->Enable(TRUE);
 436     m_positionSlider->Enable(TRUE);
 437
 438     if (m_opened_file->NeedWindow()) {
 439         OpenVideoWindow();
 440         m_opened_file->SetWindow(m_video_window);
 441     } else
 442         CloseVideoWindow();
 443 }
 444
 445 void MMBoardFrame::UpdateInfoText()
 446 {
 447     wxString infotext1, infotext2;
 448
 449     if (m_opened_file) {
 450         infotext1 = wxT("File type:\n\t");
 451         infotext1 += m_opened_file->GetStringType() + wxT("\n");
 452
 453         infotext2 = wxT("File informations:\n\n");
 454         infotext2 += m_opened_file->GetStringInformation();
 455     } else {
 456         infotext1 = wxT("File type: \n\tNo file opened");
 457         infotext2 = wxT("File informations:\nNo information\n\n\n\n\n");
 458     }
 459
 460     m_fileType->SetLabel(infotext1);
 461     m_infoText->SetLabel(infotext2);
 462 }
 463
 464 void MMBoardFrame::UpdateMMedInfo()
 465 {
 466     wxString temp_string;
 467     MMBoardTime current, length;
 468
 469     if (m_opened_file) {
 470         current = m_opened_file->GetPosition();
 471         length  = m_opened_file->GetLength();
 472     } else {
 473         current.hours = current.minutes = current.seconds = 0;
 474         length = current;
 475     }
 476
 477     // We refresh the status bar
 478     temp_string.Printf(wxT("%02d:%02d / %02d:%02d"), current.hours * 60 + current.minutes,
 479                        current.seconds, length.hours * 60 + length.minutes, length.seconds);
 480     SetStatusText(temp_string, 1);
 481
 482     // We set the slider position
 483     m_positionSlider->SetValue(current.hours * 3600 + current.minutes * 60 + current.seconds);
 484 }
 485
 486 // ----------------------------------------------------------------------------
 487 // Playing management, refreshers, ...
 488
 489 void MMBoardFrame::OnRefreshInfo(wxEvent& WXUNUSED(event))
 490 {
 491     UpdateMMedInfo();
 492
 493     if (m_opened_file->IsStopped()) {
 494         m_refreshTimer->Stop();
 495         m_playButton->Enable(TRUE);
 496         m_stopButton->Enable(FALSE);
 497         m_pauseButton->Enable(FALSE);
 498     }
 499 }
 500
 501 void MMBoardFrame::OnPlay(wxCommandEvent& WXUNUSED(event))
 502 {
 503     m_stopButton->Enable(TRUE);
 504     m_pauseButton->Enable(TRUE);
 505     m_playButton->Enable(FALSE);
 506
 507     if (m_opened_file->IsPaused()) {
 508         m_opened_file->Resume();
 509         return;
 510     }
 511
 512     m_refreshTimer->Start(1000, FALSE);
 513
 514     m_opened_file->Play();
 515
 516     m_stopButton->Enable(TRUE);
 517     m_pauseButton->Enable(TRUE);
 518     m_playButton->Enable(FALSE);
 519 }
 520
 521 void MMBoardFrame::OnStop(wxCommandEvent& WXUNUSED(event))
 522 {
 523     m_opened_file->Stop();
 524     m_refreshTimer->Stop();
 525
 526     m_stopButton->Enable(FALSE);
 527     m_playButton->Enable(TRUE);
 528
 529     UpdateMMedInfo();
 530 }
 531
 532 void MMBoardFrame::OnPause(wxCommandEvent& WXUNUSED(event))
 533 {
 534     m_opened_file->Pause();
 535
 536     m_playButton->Enable(TRUE);
 537     m_pauseButton->Enable(FALSE);
 538 }
 539
 540 void MMBoardFrame::OnEject(wxCommandEvent& WXUNUSED(event))
 541 {
 542     m_opened_file->Stop();
 543
 544     delete m_opened_file;
 545     m_opened_file = NULL;
 546
 547     m_playButton->Enable(FALSE);
 548     m_pauseButton->Enable(FALSE);
 549     m_stopButton->Enable(FALSE);
 550     m_ejectButton->Enable(FALSE);
 551     m_positionSlider->Enable(FALSE);
 552
 553     UpdateInfoText();
 554     UpdateMMedInfo();
 555 }
 556
 557 void MMBoardFrame::OnSetPosition(wxCommandEvent& WXUNUSED(event))
 558 {
 559     wxUint32 itime;
 560     MMBoardTime btime;
 561
 562     itime = m_positionSlider->GetValue();
 563     btime.seconds = itime % 60;
 564     btime.minutes = (itime / 60) % 60;
 565     btime.hours = itime / 3600;
 566     m_opened_file->SetPosition(btime);
 567
 568     UpdateMMedInfo();
 569 }
 570