src/common/mediactrlcmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/mediactrl.cpp
   3 // Purpose:     wxMediaCtrl common code
   4 // Author:      Ryan Norton <wxprojects@comcast.net>
   5 // Modified by:
   6 // Created:     11/07/04
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Ryan Norton
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // TODO: Platform specific backend defaults?
  13
  14 //===========================================================================
  15 // Declarations
  16 //===========================================================================
  17
  18 //---------------------------------------------------------------------------
  19 // Includes
  20 //---------------------------------------------------------------------------
  21
  22 #include "wx/wxprec.h"
  23
  24 #ifdef __BORLANDC__
  25     #pragma hdrstop
  26 #endif
  27
  28 #if wxUSE_MEDIACTRL
  29
  30 #ifndef WX_PRECOMP
  31     #include "wx/hash.h"
  32     #include "wx/log.h"
  33 #endif
  34
  35 #include "wx/mediactrl.h"
  36
  37 //===========================================================================
  38 //
  39 // Implementation
  40 //
  41 //===========================================================================
  42
  43 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  44 // RTTI and Event implementations
  45 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  46
  47 IMPLEMENT_CLASS(wxMediaCtrl, wxControl)
  48 wxDEFINE_EVENT( wxEVT_MEDIA_STATECHANGED, wxMediaEvent );
  49 wxDEFINE_EVENT( wxEVT_MEDIA_PLAY, wxMediaEvent );
  50 wxDEFINE_EVENT( wxEVT_MEDIA_PAUSE, wxMediaEvent );
  51 IMPLEMENT_CLASS(wxMediaBackend, wxObject)
  52 IMPLEMENT_DYNAMIC_CLASS(wxMediaEvent, wxEvent)
  53 wxDEFINE_EVENT( wxEVT_MEDIA_FINISHED, wxMediaEvent );
  54 wxDEFINE_EVENT( wxEVT_MEDIA_LOADED, wxMediaEvent );
  55 wxDEFINE_EVENT( wxEVT_MEDIA_STOP, wxMediaEvent );
  56
  57 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  58 //
  59 //  wxMediaCtrl
  60 //
  61 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  62
  63 //---------------------------------------------------------------------------
  64 // wxMediaBackend Destructor
  65 //
  66 // This is here because the DARWIN gcc compiler badly screwed up and
  67 // needs the destructor implementation in the source
  68 //---------------------------------------------------------------------------
  69 wxMediaBackend::~wxMediaBackend()
  70 {
  71 }
  72
  73 //---------------------------------------------------------------------------
  74 // wxMediaCtrl::Create (file version)
  75 // wxMediaCtrl::Create (URL version)
  76 //
  77 // Searches for a backend that is installed on the system (backends
  78 // starting with lower characters in the alphabet are given priority),
  79 // and creates the control from it
  80 //
  81 // This searches by searching the global RTTI hashtable, class by class,
  82 // attempting to call CreateControl on each one found that is a derivative
  83 // of wxMediaBackend - if it succeeded Create returns true, otherwise
  84 // it keeps iterating through the hashmap.
  85 //---------------------------------------------------------------------------
  86 bool wxMediaCtrl::Create(wxWindow* parent, wxWindowID id,
  87                 const wxString& fileName,
  88                 const wxPoint& pos,
  89                 const wxSize& size,
  90                 long style,
  91                 const wxString& szBackend,
  92                 const wxValidator& validator,
  93                 const wxString& name)
  94 {
  95     if(!szBackend.empty())
  96     {
  97         wxClassInfo* pClassInfo = wxClassInfo::FindClass(szBackend);
  98
  99         if(!pClassInfo || !DoCreate(pClassInfo, parent, id,
 100                                     pos, size, style, validator, name))
 101         {
 102             m_imp = NULL;
 103             return false;
 104         }
 105
 106         if (!fileName.empty())
 107         {
 108             if (!Load(fileName))
 109             {
 110                 delete m_imp;
 111                 m_imp = NULL;
 112                 return false;
 113             }
 114         }
 115
 116         SetInitialSize(size);
 117         return true;
 118     }
 119     else
 120     {
 121         wxClassInfo::const_iterator it = wxClassInfo::begin_classinfo();
 122
 123         const wxClassInfo* classInfo;
 124
 125         while((classInfo = NextBackend(&it)) != NULL)
 126         {
 127             wxLogMessage( classInfo->GetClassName() );
 128             if(!DoCreate(classInfo, parent, id,
 129                          pos, size, style, validator, name))
 130                 continue;
 131
 132             if (!fileName.empty())
 133             {
 134                 if (Load(fileName))
 135                 {
 136                     SetInitialSize(size);
 137                     return true;
 138                 }
 139                 else
 140                     delete m_imp;
 141             }
 142             else
 143             {
 144                 SetInitialSize(size);
 145                 return true;
 146             }
 147         }
 148
 149         m_imp = NULL;
 150         return false;
 151     }
 152 }
 153
 154 bool wxMediaCtrl::Create(wxWindow* parent, wxWindowID id,
 155                          const wxURI& location,
 156                          const wxPoint& pos,
 157                          const wxSize& size,
 158                          long style,
 159                          const wxString& szBackend,
 160                          const wxValidator& validator,
 161                          const wxString& name)
 162 {
 163     if(!szBackend.empty())
 164     {
 165         wxClassInfo* pClassInfo = wxClassInfo::FindClass(szBackend);
 166         if(!pClassInfo || !DoCreate(pClassInfo, parent, id,
 167                                     pos, size, style, validator, name))
 168         {
 169             m_imp = NULL;
 170             return false;
 171         }
 172
 173         if (!Load(location))
 174         {
 175             delete m_imp;
 176             m_imp = NULL;
 177             return false;
 178         }
 179
 180         SetInitialSize(size);
 181         return true;
 182     }
 183     else
 184     {
 185         wxClassInfo::const_iterator it  = wxClassInfo::begin_classinfo();
 186
 187         const wxClassInfo* classInfo;
 188
 189         while((classInfo = NextBackend(&it)) != NULL)
 190         {
 191             if(!DoCreate(classInfo, parent, id,
 192                          pos, size, style, validator, name))
 193                 continue;
 194
 195             if (Load(location))
 196             {
 197                 SetInitialSize(size);
 198                 return true;
 199             }
 200             else
 201                 delete m_imp;
 202         }
 203
 204         m_imp = NULL;
 205         return false;
 206     }
 207 }
 208
 209 //---------------------------------------------------------------------------
 210 // wxMediaCtrl::DoCreate
 211 //
 212 // Attempts to create the control from a backend
 213 //---------------------------------------------------------------------------
 214 bool wxMediaCtrl::DoCreate(const wxClassInfo* classInfo,
 215                             wxWindow* parent, wxWindowID id,
 216                             const wxPoint& pos,
 217                             const wxSize& size,
 218                             long style,
 219                             const wxValidator& validator,
 220                             const wxString& name)
 221 {
 222     m_imp = (wxMediaBackend*)classInfo->CreateObject();
 223
 224     if( m_imp->CreateControl(this, parent, id, pos, size,
 225                              style, validator, name) )
 226     {
 227         return true;
 228     }
 229
 230     delete m_imp;
 231     return false;
 232 }
 233
 234 //---------------------------------------------------------------------------
 235 // wxMediaCtrl::NextBackend (static)
 236 //
 237 //
 238 // Search through the RTTI hashmap one at a
 239 // time, attempting to create each derivative
 240 // of wxMediaBackend
 241 //
 242 //
 243 // STL isn't compatible with and will have a compilation error
 244 // on a wxNode, however, wxHashTable::compatibility_iterator is
 245 // incompatible with the old 2.4 stable version - but since
 246 // we're in 2.5+ only we don't need to worry about the new version
 247 //---------------------------------------------------------------------------
 248 const wxClassInfo* wxMediaCtrl::NextBackend(wxClassInfo::const_iterator* it)
 249 {
 250     for ( wxClassInfo::const_iterator end = wxClassInfo::end_classinfo();
 251           *it != end; ++(*it) )
 252     {
 253         const wxClassInfo* classInfo = **it;
 254         if ( classInfo->IsKindOf(CLASSINFO(wxMediaBackend)) &&
 255              classInfo != CLASSINFO(wxMediaBackend) )
 256         {
 257             ++(*it);
 258             return classInfo;
 259         }
 260     }
 261
 262     //
 263     // Nope - couldn't successfully find one... fail
 264     //
 265     return NULL;
 266 }
 267
 268
 269 //---------------------------------------------------------------------------
 270 // wxMediaCtrl Destructor
 271 //
 272 // Free up the backend if it exists
 273 //---------------------------------------------------------------------------
 274 wxMediaCtrl::~wxMediaCtrl()
 275 {
 276     if (m_imp)
 277         delete m_imp;
 278 }
 279
 280 //---------------------------------------------------------------------------
 281 // wxMediaCtrl::Load (file version)
 282 // wxMediaCtrl::Load (URL version)
 283 // wxMediaCtrl::Load (URL & Proxy version)
 284 // wxMediaCtrl::Load (wxInputStream version)
 285 //
 286 // Here we call load of the backend - keeping
 287 // track of whether it was successful or not - which
 288 // will determine which later method calls work
 289 //---------------------------------------------------------------------------
 290 bool wxMediaCtrl::Load(const wxString& fileName)
 291 {
 292     if(m_imp)
 293         return (m_bLoaded = m_imp->Load(fileName));
 294     return false;
 295 }
 296
 297 bool wxMediaCtrl::Load(const wxURI& location)
 298 {
 299     if(m_imp)
 300         return (m_bLoaded = m_imp->Load(location));
 301     return false;
 302 }
 303
 304 bool wxMediaCtrl::Load(const wxURI& location, const wxURI& proxy)
 305 {
 306     if(m_imp)
 307         return (m_bLoaded = m_imp->Load(location, proxy));
 308     return false;
 309 }
 310
 311 //---------------------------------------------------------------------------
 312 // wxMediaCtrl::Play
 313 // wxMediaCtrl::Pause
 314 // wxMediaCtrl::Stop
 315 // wxMediaCtrl::GetPlaybackRate
 316 // wxMediaCtrl::SetPlaybackRate
 317 // wxMediaCtrl::Seek --> SetPosition
 318 // wxMediaCtrl::Tell --> GetPosition
 319 // wxMediaCtrl::Length --> GetDuration
 320 // wxMediaCtrl::GetState
 321 // wxMediaCtrl::DoGetBestSize
 322 // wxMediaCtrl::SetVolume
 323 // wxMediaCtrl::GetVolume
 324 // wxMediaCtrl::ShowInterface
 325 // wxMediaCtrl::GetDownloadProgress
 326 // wxMediaCtrl::GetDownloadTotal
 327 //
 328 // 1) Check to see whether the backend exists and is loading
 329 // 2) Call the backend's version of the method, returning success
 330 //    if the backend's version succeeds
 331 //---------------------------------------------------------------------------
 332 bool wxMediaCtrl::Play()
 333 {
 334     if(m_imp && m_bLoaded)
 335         return m_imp->Play();
 336     return 0;
 337 }
 338
 339 bool wxMediaCtrl::Pause()
 340 {
 341     if(m_imp && m_bLoaded)
 342         return m_imp->Pause();
 343     return 0;
 344 }
 345
 346 bool wxMediaCtrl::Stop()
 347 {
 348     if(m_imp && m_bLoaded)
 349         return m_imp->Stop();
 350     return 0;
 351 }
 352
 353 double wxMediaCtrl::GetPlaybackRate()
 354 {
 355     if(m_imp && m_bLoaded)
 356         return m_imp->GetPlaybackRate();
 357     return 0;
 358 }
 359
 360 bool wxMediaCtrl::SetPlaybackRate(double dRate)
 361 {
 362     if(m_imp && m_bLoaded)
 363         return m_imp->SetPlaybackRate(dRate);
 364     return false;
 365 }
 366
 367 wxFileOffset wxMediaCtrl::Seek(wxFileOffset where, wxSeekMode mode)
 368 {
 369     wxFileOffset offset;
 370
 371     switch (mode)
 372     {
 373     case wxFromStart:
 374         offset = where;
 375         break;
 376     case wxFromEnd:
 377         offset = Length() - where;
 378         break;
 379 //    case wxFromCurrent:
 380     default:
 381         offset = Tell() + where;
 382         break;
 383     }
 384
 385     if(m_imp && m_bLoaded && m_imp->SetPosition(offset))
 386         return offset;
 387     return wxInvalidOffset;
 388 }
 389
 390 wxFileOffset wxMediaCtrl::Tell()
 391 {
 392     if(m_imp && m_bLoaded)
 393         return (wxFileOffset) m_imp->GetPosition().ToLong();
 394     return wxInvalidOffset;
 395 }
 396
 397 wxFileOffset wxMediaCtrl::Length()
 398 {
 399     if(m_imp && m_bLoaded)
 400         return (wxFileOffset) m_imp->GetDuration().ToLong();
 401     return wxInvalidOffset;
 402 }
 403
 404 wxMediaState wxMediaCtrl::GetState()
 405 {
 406     if(m_imp && m_bLoaded)
 407         return m_imp->GetState();
 408     return wxMEDIASTATE_STOPPED;
 409 }
 410
 411 wxSize wxMediaCtrl::DoGetBestSize() const
 412 {
 413     if(m_imp)
 414         return m_imp->GetVideoSize();
 415     return wxSize(0,0);
 416 }
 417
 418 double wxMediaCtrl::GetVolume()
 419 {
 420     if(m_imp && m_bLoaded)
 421         return m_imp->GetVolume();
 422     return 0.0;
 423 }
 424
 425 bool wxMediaCtrl::SetVolume(double dVolume)
 426 {
 427     if(m_imp && m_bLoaded)
 428         return m_imp->SetVolume(dVolume);
 429     return false;
 430 }
 431
 432 bool wxMediaCtrl::ShowPlayerControls(wxMediaCtrlPlayerControls flags)
 433 {
 434     if(m_imp)
 435         return m_imp->ShowPlayerControls(flags);
 436     return false;
 437 }
 438
 439 wxFileOffset wxMediaCtrl::GetDownloadProgress()
 440 {
 441     if(m_imp && m_bLoaded)
 442         return (wxFileOffset) m_imp->GetDownloadProgress().ToLong();
 443     return wxInvalidOffset;
 444 }
 445
 446 wxFileOffset wxMediaCtrl::GetDownloadTotal()
 447 {
 448     if(m_imp && m_bLoaded)
 449         return (wxFileOffset) m_imp->GetDownloadTotal().ToLong();
 450     return wxInvalidOffset;
 451 }
 452
 453 //---------------------------------------------------------------------------
 454 // wxMediaCtrl::DoMoveWindow
 455 //
 456 // 1) Call parent's version so that our control's window moves where
 457 //    it's supposed to
 458 // 2) If the backend exists and is loaded, move the video
 459 //    of the media to where our control's window is now located
 460 //---------------------------------------------------------------------------
 461 void wxMediaCtrl::DoMoveWindow(int x, int y, int w, int h)
 462 {
 463     wxControl::DoMoveWindow(x,y,w,h);
 464
 465     if(m_imp)
 466         m_imp->Move(x, y, w, h);
 467 }
 468
 469 //---------------------------------------------------------------------------
 470 // wxMediaCtrl::MacVisibilityChanged
 471 //---------------------------------------------------------------------------
 472 #ifdef __WXOSX_CARBON__
 473 void wxMediaCtrl::MacVisibilityChanged()
 474 {
 475     wxControl::MacVisibilityChanged();
 476
 477     if(m_imp)
 478         m_imp->MacVisibilityChanged();
 479 }
 480 #endif
 481
 482 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 483 //
 484 //  wxMediaBackendCommonBase
 485 //
 486 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 487
 488 void wxMediaBackendCommonBase::NotifyMovieSizeChanged()
 489 {
 490     // our best size changed after opening a new file
 491     m_ctrl->InvalidateBestSize();
 492     m_ctrl->SetSize(m_ctrl->GetSize());
 493
 494     // if the parent of the control has a sizer ask it to refresh our size
 495     wxWindow * const parent = m_ctrl->GetParent();
 496     if ( parent->GetSizer() )
 497     {
 498         m_ctrl->GetParent()->Layout();
 499         m_ctrl->GetParent()->Refresh();
 500         m_ctrl->GetParent()->Update();
 501     }
 502 }
 503
 504 void wxMediaBackendCommonBase::NotifyMovieLoaded()
 505 {
 506     NotifyMovieSizeChanged();
 507
 508     // notify about movie being fully loaded
 509     QueueEvent(wxEVT_MEDIA_LOADED);
 510 }
 511
 512 bool wxMediaBackendCommonBase::SendStopEvent()
 513 {
 514     wxMediaEvent theEvent(wxEVT_MEDIA_STOP, m_ctrl->GetId());
 515
 516     return !m_ctrl->GetEventHandler()->ProcessEvent(theEvent) || theEvent.IsAllowed();
 517 }
 518
 519 void wxMediaBackendCommonBase::QueueEvent(wxEventType evtType)
 520 {
 521     wxMediaEvent theEvent(evtType, m_ctrl->GetId());
 522     m_ctrl->GetEventHandler()->AddPendingEvent(theEvent);
 523 }
 524
 525 void wxMediaBackendCommonBase::QueuePlayEvent()
 526 {
 527     QueueEvent(wxEVT_MEDIA_STATECHANGED);
 528     QueueEvent(wxEVT_MEDIA_PLAY);
 529 }
 530
 531 void wxMediaBackendCommonBase::QueuePauseEvent()
 532 {
 533     QueueEvent(wxEVT_MEDIA_STATECHANGED);
 534     QueueEvent(wxEVT_MEDIA_PAUSE);
 535 }
 536
 537 void wxMediaBackendCommonBase::QueueStopEvent()
 538 {
 539     QueueEvent(wxEVT_MEDIA_STATECHANGED);
 540     QueueEvent(wxEVT_MEDIA_STOP);
 541 }
 542
 543
 544 //
 545 // Force link default backends in -
 546 // see http://wiki.wxwidgets.org/wiki.pl?RTTI
 547 //
 548 #include "wx/html/forcelnk.h"
 549
 550 #ifdef __WXMSW__ // MSW has huge backends so we do it seperately
 551 FORCE_LINK(wxmediabackend_am)
 552 FORCE_LINK(wxmediabackend_wmp10)
 553 #elif !defined(__WXOSX_COCOA__)
 554 FORCE_LINK(basewxmediabackends)
 555 #endif
 556
 557 #endif //wxUSE_MEDIACTRL