src/common/mediactrlcmn.cpp

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