contrib/samples/mmedia/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.h"
  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" wxWidgets 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(__WXX11__) || defined(__WXMOTIF__) || defined(__WXMAC__)
  41     #include "mondrian.xpm"
  42 #endif
  43
  44 // include multimedia classes
  45 #include "wx/mmedia/sndbase.h"
  46 #ifdef __WIN32__
  47     #include "wx/mmedia/sndwin.h"
  48 #endif
  49 #ifdef __UNIX__
  50     #include "wx/mmedia/sndoss.h"
  51     #include "wx/mmedia/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 wxWidgets 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 wxWidgets
 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(_T("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();
 173
 174     m_caps = TestMultimediaCaps();
 175
 176     if (!m_caps) {
 177       wxMessageBox(_T("Your system has no multimedia capabilities. We are exiting now."), _T("Major error !"), wxOK | wxICON_ERROR, NULL);
 178       return false;
 179     }
 180
 181     wxString msg;
 182     msg.Printf(_T("Detected : %s%s%s"), (m_caps & MM_SOUND_OSS) ? _T("OSS ") : _T(""),
 183                                 (m_caps & MM_SOUND_ESD) ? _T("ESD ") : _T(""),
 184                                 (m_caps & MM_SOUND_WIN) ? _T("WIN") : _T(""));
 185
 186     wxMessageBox(msg, _T("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 __WIN32__
 202     // We test the Windows sound support.
 203
 204     dev = new wxSoundStreamWin();
 205     if (dev->GetError() == wxSOUND_NOERROR)
 206         caps |= MM_SOUND_WIN;
 207     delete dev;
 208
 209 #elif defined __UNIX__
 210     // We now test the ESD support
 211
 212     dev = new wxSoundStreamESD();
 213     if (dev->GetError() == wxSOUND_NOERROR)
 214         caps |= MM_SOUND_ESD;
 215     delete dev;
 216
 217     // We test the OSS (Open Sound System) support.
 218     // WARNING: There is a conflict between ESD and ALSA. We may be interrested
 219     // in disabling the auto detection of OSS is ESD has been detected.
 220 #if 1
 221     if (!(caps & MM_SOUND_ESD)) {
 222 #endif
 223
 224     dev = new wxSoundStreamOSS();
 225     if (dev->GetError() == wxSOUND_NOERROR)
 226         caps |= MM_SOUND_OSS;
 227     delete dev;
 228 #if 1
 229     }
 230 #endif
 231
 232 #endif
 233
 234     return caps;
 235 }
 236
 237 // ----------------------------------------------------------------------------
 238 // main frame
 239 // ----------------------------------------------------------------------------
 240
 241 // frame constructor
 242 MMBoardFrame::MMBoardFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 243        : wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size)
 244 {
 245 #ifdef __WXMAC__
 246     // we need this in order to allow the about menu relocation, since ABOUT is
 247     // not the default id of the about menu
 248     wxApp::s_macAboutMenuItemId = MMBoard_About;
 249 #endif
 250
 251     // set the frame icon
 252     SetIcon(wxICON(mondrian));
 253
 254     // create a menu bar
 255     wxMenu *menuFile = new wxMenu(wxEmptyString, wxMENU_TEAROFF);
 256
 257     // the "About" item should be in the help menu
 258     wxMenu *helpMenu = new wxMenu;
 259     helpMenu->Append(MMBoard_About, wxT("&About...\tCtrl-A"), wxT("Show about dialog"));
 260
 261     menuFile->Append(MMBoard_Open, wxT("&Open\tAlt-O"), wxT("Open file"));
 262     menuFile->AppendSeparator();
 263     menuFile->Append(MMBoard_Quit, wxT("E&xit\tAlt-X"), wxT("Quit this program"));
 264
 265     // now append the freshly created menu to the menu bar...
 266     wxMenuBar *menuBar = new wxMenuBar();
 267     menuBar->Append(menuFile, wxT("&File"));
 268     menuBar->Append(helpMenu, wxT("&Help"));
 269
 270     // ... and attach this menu bar to the frame
 271     SetMenuBar(menuBar);
 272
 273 #if wxUSE_STATUSBAR
 274     // create a status bar just for fun (by default with 1 pane only)
 275     CreateStatusBar(3);
 276     SetStatusText(wxT("Welcome to wxWidgets!"));
 277 #endif // wxUSE_STATUSBAR
 278
 279     // Misc variables
 280     m_opened_file = NULL;
 281
 282     m_panel = new wxPanel(this, wxID_ANY);
 283
 284     // Initialize main slider
 285     m_positionSlider = new wxSlider( m_panel, MMBoard_PositionSlider, 0, 0, 60,
 286                      wxDefaultPosition, wxSize(300, wxDefaultCoord),
 287                      wxSL_HORIZONTAL | wxSL_AUTOTICKS);
 288     m_positionSlider->SetPageSize(60);  // 60 secs
 289     m_positionSlider->Disable();
 290
 291     // Initialize info panel
 292     wxPanel *infoPanel = new wxPanel( m_panel, wxID_ANY);
 293     infoPanel->SetBackgroundColour(*wxBLACK);
 294     infoPanel->SetForegroundColour(*wxWHITE);
 295
 296     wxBoxSizer *infoSizer = new wxBoxSizer(wxVERTICAL);
 297
 298     m_fileType = new wxStaticText(infoPanel, wxID_ANY, wxEmptyString);
 299 #if wxUSE_STATLINE
 300     wxStaticLine *line = new wxStaticLine(infoPanel, wxID_ANY);
 301 #endif // wxUSE_STATLINE
 302     m_infoText = new wxStaticText(infoPanel, wxID_ANY, wxEmptyString);
 303
 304     UpdateInfoText();
 305
 306     infoSizer->Add(m_fileType, 0, wxGROW | wxALL, 1);
 307 #if wxUSE_STATLINE
 308     infoSizer->Add(line, 0, wxGROW | wxCENTRE, 20);
 309 #endif // wxUSE_STATLINE
 310     infoSizer->Add(m_infoText, 0, wxGROW | wxALL, 1);
 311
 312     infoPanel->SetSizer(infoSizer);
 313
 314     // Bitmap button panel
 315     wxBoxSizer *buttonSizer = new wxBoxSizer(wxHORIZONTAL);
 316
 317     wxBitmap play_bmp(play_back_xpm);
 318     wxBitmap stop_bmp(stop_back_xpm);
 319     wxBitmap eject_bmp(eject_xpm);
 320     wxBitmap pause_bmp(pause_xpm);
 321
 322     m_playButton = new wxBitmapButton(m_panel, MMBoard_PlayButton, play_bmp);
 323     m_playButton->Disable();
 324     m_pauseButton = new wxBitmapButton(m_panel, MMBoard_PauseButton, pause_bmp);
 325     m_pauseButton->Disable();
 326     m_stopButton = new wxBitmapButton(m_panel, MMBoard_StopButton, stop_bmp);
 327     m_stopButton->Disable();
 328     m_ejectButton = new wxBitmapButton(m_panel, MMBoard_EjectButton, eject_bmp);
 329     m_ejectButton->Disable();
 330
 331     buttonSizer->Add(m_playButton, 0, wxALL, 2);
 332     buttonSizer->Add(m_pauseButton, 0, wxALL, 2);
 333     buttonSizer->Add(m_stopButton, 0, wxALL, 2);
 334     buttonSizer->Add(m_ejectButton, 0, wxALL, 2);
 335
 336     // Top sizer
 337     m_sizer = new wxBoxSizer(wxVERTICAL);
 338 #if wxUSE_STATLINE
 339     m_sizer->Add(new wxStaticLine(m_panel, wxID_ANY), 0, wxGROW | wxCENTRE, 0);
 340 #endif // wxUSE_STATLINE
 341     m_sizer->Add(m_positionSlider, 0, wxCENTRE | wxGROW | wxALL, 2);
 342 #if wxUSE_STATLINE
 343     m_sizer->Add(new wxStaticLine(m_panel, wxID_ANY), 0, wxGROW | wxCENTRE, 0);
 344 #endif // wxUSE_STATLINE
 345     m_sizer->Add(buttonSizer, 0, wxALL, 0);
 346 #if wxUSE_STATLINE
 347     m_sizer->Add(new wxStaticLine(m_panel, wxID_ANY), 0, wxGROW | wxCENTRE, 0);
 348 #endif // wxUSE_STATLINE
 349     m_sizer->Add(infoPanel, 1, wxCENTRE | wxGROW, 0);
 350
 351     m_panel->SetSizer(m_sizer);
 352     m_sizer->Fit(this);
 353     m_sizer->SetSizeHints(this);
 354
 355     // Timer
 356     m_refreshTimer = new wxTimer(this, MMBoard_RefreshInfo);
 357
 358     // Video window
 359     m_video_window = NULL;
 360
 361     // Multimedia file
 362     m_opened_file = NULL;
 363 }
 364
 365 MMBoardFrame::~MMBoardFrame()
 366 {
 367     if (m_opened_file)
 368         delete m_opened_file;
 369
 370     delete m_refreshTimer;
 371 }
 372
 373 void MMBoardFrame::OpenVideoWindow()
 374 {
 375   if (m_video_window)
 376     return;
 377
 378   m_video_window = new wxWindow(m_panel, wxID_ANY, wxDefaultPosition, wxSize(200, 200));
 379   m_video_window->SetBackgroundColour(*wxBLACK);
 380   m_sizer->Prepend(m_video_window, 2, wxGROW | wxSHRINK | wxCENTRE, 1);
 381
 382   m_sizer->Fit(this);
 383 }
 384
 385 void MMBoardFrame::CloseVideoWindow()
 386 {
 387     if (!m_video_window)
 388         return;
 389
 390     m_sizer->Detach( m_video_window );
 391     delete m_video_window;
 392     m_video_window = NULL;
 393
 394     m_sizer->Fit(this);
 395 }
 396
 397 // event handlers
 398
 399 void MMBoardFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 400 {
 401     // true is to force the frame to close
 402     Close(true);
 403 }
 404
 405 void MMBoardFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 406 {
 407     wxString msg;
 408     msg.Printf( wxT("wxWidgets Multimedia board v1.0a, wxMMedia v2.0a:\n")
 409                 wxT("an example of the capabilities of the wxWidgets multimedia classes.\n")
 410         wxT("Copyright 1999, 2000, Guilhem Lavaux.\n"));
 411
 412     wxMessageBox(msg, _T("About MMBoard"), wxOK | wxICON_INFORMATION, this);
 413 }
 414
 415 void MMBoardFrame::OnOpen(wxCommandEvent& WXUNUSED(event))
 416 {
 417     wxString selected_file;
 418
 419     if (m_opened_file) {
 420         if (!m_opened_file->IsStopped()) {
 421             wxCommandEvent event2;
 422             OnStop(event2);
 423         }
 424         delete m_opened_file;
 425     }
 426
 427     // select a file to be opened
 428 #if wxUSE_FILEDLG
 429     selected_file = wxLoadFileSelector(_T("multimedia"), _T("*"), NULL, this);
 430 #endif // wxUSE_FILEDLG
 431     if (selected_file.empty())
 432         return;
 433
 434     m_opened_file = MMBoardManager::Open(selected_file);
 435
 436     // Change the range values of the slider.
 437     MMBoardTime length;
 438
 439     length = m_opened_file->GetLength();
 440     m_positionSlider->SetRange(0, length.hours * 3600 + length.minutes * 60 + length.seconds);
 441
 442     // Update misc info
 443     UpdateMMedInfo();
 444
 445 #if wxUSE_STATUSBAR
 446     SetStatusText(selected_file, 2);
 447 #endif // wxUSE_STATUSBAR
 448
 449     // Update info text
 450     UpdateInfoText();
 451
 452     // Enable a few buttons
 453     m_playButton->Enable();
 454     m_ejectButton->Enable();
 455     m_positionSlider->Enable();
 456
 457     if (m_opened_file->NeedWindow()) {
 458         OpenVideoWindow();
 459         m_opened_file->SetWindow(m_video_window);
 460     } else
 461         CloseVideoWindow();
 462 }
 463
 464 void MMBoardFrame::UpdateInfoText()
 465 {
 466     wxString infotext1, infotext2;
 467
 468     if (m_opened_file) {
 469         infotext1 = wxT("File type:\n\t");
 470         infotext1 += m_opened_file->GetStringType() + wxT("\n");
 471
 472         infotext2 = wxT("File informations:\n\n");
 473         infotext2 += m_opened_file->GetStringInformation();
 474     } else {
 475         infotext1 = wxT("File type: \n\tNo file opened");
 476         infotext2 = wxT("File informations:\nNo information\n\n\n\n\n");
 477     }
 478
 479     m_fileType->SetLabel(infotext1);
 480     m_infoText->SetLabel(infotext2);
 481 }
 482
 483 void MMBoardFrame::UpdateMMedInfo()
 484 {
 485     MMBoardTime current, length;
 486
 487     if (m_opened_file) {
 488         current = m_opened_file->GetPosition();
 489         length  = m_opened_file->GetLength();
 490     } else {
 491         current.hours = current.minutes = current.seconds = 0;
 492         length = current;
 493     }
 494
 495 #if wxUSE_STATUSBAR
 496     // We refresh the status bar
 497     wxString temp_string;
 498     temp_string.Printf(wxT("%02d:%02d / %02d:%02d"), current.hours * 60 + current.minutes,
 499                        current.seconds, length.hours * 60 + length.minutes, length.seconds);
 500     SetStatusText(temp_string, 1);
 501 #else
 502     wxUnusedVar(length);
 503 #endif // wxUSE_STATUSBAR
 504
 505     // We set the slider position
 506     m_positionSlider->SetValue(current.hours * 3600 + current.minutes * 60 + current.seconds);
 507 }
 508
 509 // ----------------------------------------------------------------------------
 510 // Playing management, refreshers, ...
 511
 512 void MMBoardFrame::OnRefreshInfo(wxEvent& WXUNUSED(event))
 513 {
 514     UpdateMMedInfo();
 515
 516     if (m_opened_file->IsStopped())
 517     {
 518         m_refreshTimer->Stop();
 519         m_playButton->Enable();
 520         m_stopButton->Disable();
 521         m_pauseButton->Disable();
 522     }
 523 }
 524
 525 void MMBoardFrame::OnPlay(wxCommandEvent& WXUNUSED(event))
 526 {
 527     m_stopButton->Enable();
 528     m_pauseButton->Enable();
 529     m_playButton->Disable();
 530
 531     if (m_opened_file->IsPaused())
 532     {
 533         m_opened_file->Resume();
 534         return;
 535     }
 536
 537     m_refreshTimer->Start(1000, false);
 538
 539     m_opened_file->Play();
 540
 541     m_stopButton->Enable();
 542     m_pauseButton->Enable();
 543     m_playButton->Disable();
 544 }
 545
 546 void MMBoardFrame::OnStop(wxCommandEvent& WXUNUSED(event))
 547 {
 548     m_opened_file->Stop();
 549     m_refreshTimer->Stop();
 550
 551     m_stopButton->Disable();
 552     m_playButton->Enable();
 553
 554     UpdateMMedInfo();
 555 }
 556
 557 void MMBoardFrame::OnPause(wxCommandEvent& WXUNUSED(event))
 558 {
 559     m_opened_file->Pause();
 560
 561     m_playButton->Enable();
 562     m_pauseButton->Disable();
 563 }
 564
 565 void MMBoardFrame::OnEject(wxCommandEvent& WXUNUSED(event))
 566 {
 567     m_opened_file->Stop();
 568
 569     delete m_opened_file;
 570     m_opened_file = NULL;
 571
 572     m_playButton->Disable();
 573     m_pauseButton->Disable();
 574     m_stopButton->Disable();
 575     m_ejectButton->Disable();
 576     m_positionSlider->Disable();
 577
 578     UpdateInfoText();
 579     UpdateMMedInfo();
 580 }
 581
 582 void MMBoardFrame::OnSetPosition(wxCommandEvent& WXUNUSED(event))
 583 {
 584     wxUint32 itime;
 585     MMBoardTime btime;
 586
 587     itime = m_positionSlider->GetValue();
 588     btime.seconds = itime % 60;
 589     btime.minutes = (itime / 60) % 60;
 590     btime.hours = itime / 3600;
 591     m_opened_file->SetPosition(btime);
 592
 593     UpdateMMedInfo();
 594 }