src/common/mediactrlcmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/mediactrlcmn.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                 wxDELETE(m_imp);
 111                 return false;
 112             }
 113         }
 114
 115         SetInitialSize(size);
 116         return true;
 117     }
 118     else
 119     {
 120         wxClassInfo::const_iterator it = wxClassInfo::begin_classinfo();
 121
 122         const wxClassInfo* classInfo;
 123
 124         while((classInfo = NextBackend(&it)) != NULL)
 125         {
 126             if(!DoCreate(classInfo, parent, id,
 127                          pos, size, style, validator, name))
 128                 continue;
 129
 130             if (!fileName.empty())
 131             {
 132                 if (Load(fileName))
 133                 {
 134                     SetInitialSize(size);
 135                     return true;
 136                 }
 137                 else
 138                     delete m_imp;
 139             }
 140             else
 141             {
 142                 SetInitialSize(size);
 143                 return true;
 144             }
 145         }
 146
 147         m_imp = NULL;
 148         return false;
 149     }
 150 }
 151
 152 bool wxMediaCtrl::Create(wxWindow* parent, wxWindowID id,
 153                          const wxURI& location,
 154                          const wxPoint& pos,
 155                          const wxSize& size,
 156                          long style,
 157                          const wxString& szBackend,
 158                          const wxValidator& validator,
 159                          const wxString& name)
 160 {
 161     if(!szBackend.empty())
 162     {
 163         wxClassInfo* pClassInfo = wxClassInfo::FindClass(szBackend);
 164         if(!pClassInfo || !DoCreate(pClassInfo, parent, id,
 165                                     pos, size, style, validator, name))
 166         {
 167             m_imp = NULL;
 168             return false;
 169         }
 170
 171         if (!Load(location))
 172         {
 173             wxDELETE(m_imp);
 174             return false;
 175         }
 176
 177         SetInitialSize(size);
 178         return true;
 179     }
 180     else
 181     {
 182         wxClassInfo::const_iterator it  = wxClassInfo::begin_classinfo();
 183
 184         const wxClassInfo* classInfo;
 185
 186         while((classInfo = NextBackend(&it)) != NULL)
 187         {
 188             if(!DoCreate(classInfo, parent, id,
 189                          pos, size, style, validator, name))
 190                 continue;
 191
 192             if (Load(location))
 193             {
 194                 SetInitialSize(size);
 195                 return true;
 196             }
 197             else
 198                 delete m_imp;
 199         }
 200
 201         m_imp = NULL;
 202         return false;
 203     }
 204 }
 205
 206 //---------------------------------------------------------------------------
 207 // wxMediaCtrl::DoCreate
 208 //
 209 // Attempts to create the control from a backend
 210 //---------------------------------------------------------------------------
 211 bool wxMediaCtrl::DoCreate(const wxClassInfo* classInfo,
 212                             wxWindow* parent, wxWindowID id,
 213                             const wxPoint& pos,
 214                             const wxSize& size,
 215                             long style,
 216                             const wxValidator& validator,
 217                             const wxString& name)
 218 {
 219     m_imp = (wxMediaBackend*)classInfo->CreateObject();
 220
 221     if( m_imp->CreateControl(this, parent, id, pos, size,
 222                              style, validator, name) )
 223     {
 224         return true;
 225     }
 226
 227     delete m_imp;
 228     return false;
 229 }
 230
 231 //---------------------------------------------------------------------------
 232 // wxMediaCtrl::NextBackend (static)
 233 //
 234 //
 235 // Search through the RTTI hashmap one at a
 236 // time, attempting to create each derivative
 237 // of wxMediaBackend
 238 //
 239 //
 240 // STL isn't compatible with and will have a compilation error
 241 // on a wxNode, however, wxHashTable::compatibility_iterator is
 242 // incompatible with the old 2.4 stable version - but since
 243 // we're in 2.5+ only we don't need to worry about the new version
 244 //---------------------------------------------------------------------------
 245 const wxClassInfo* wxMediaCtrl::NextBackend(wxClassInfo::const_iterator* it)
 246 {
 247     for ( wxClassInfo::const_iterator end = wxClassInfo::end_classinfo();
 248           *it != end; ++(*it) )
 249     {
 250         const wxClassInfo* classInfo = **it;
 251         if ( classInfo->IsKindOf(CLASSINFO(wxMediaBackend)) &&
 252              classInfo != CLASSINFO(wxMediaBackend) )
 253         {
 254             ++(*it);
 255             return classInfo;
 256         }
 257     }
 258
 259     //
 260     // Nope - couldn't successfully find one... fail
 261     //
 262     return NULL;
 263 }
 264
 265
 266 //---------------------------------------------------------------------------
 267 // wxMediaCtrl Destructor
 268 //
 269 // Free up the backend if it exists
 270 //---------------------------------------------------------------------------
 271 wxMediaCtrl::~wxMediaCtrl()
 272 {
 273     if (m_imp)
 274         delete m_imp;
 275 }
 276
 277 //---------------------------------------------------------------------------
 278 // wxMediaCtrl::Load (file version)
 279 // wxMediaCtrl::Load (URL version)
 280 // wxMediaCtrl::Load (URL & Proxy version)
 281 // wxMediaCtrl::Load (wxInputStream version)
 282 //
 283 // Here we call load of the backend - keeping
 284 // track of whether it was successful or not - which
 285 // will determine which later method calls work
 286 //---------------------------------------------------------------------------
 287 bool wxMediaCtrl::Load(const wxString& fileName)
 288 {
 289     if(m_imp)
 290         return (m_bLoaded = m_imp->Load(fileName));
 291     return false;
 292 }
 293
 294 bool wxMediaCtrl::Load(const wxURI& location)
 295 {
 296     if(m_imp)
 297         return (m_bLoaded = m_imp->Load(location));
 298     return false;
 299 }
 300
 301 bool wxMediaCtrl::Load(const wxURI& location, const wxURI& proxy)
 302 {
 303     if(m_imp)
 304         return (m_bLoaded = m_imp->Load(location, proxy));
 305     return false;
 306 }
 307
 308 //---------------------------------------------------------------------------
 309 // wxMediaCtrl::Play
 310 // wxMediaCtrl::Pause
 311 // wxMediaCtrl::Stop
 312 // wxMediaCtrl::GetPlaybackRate
 313 // wxMediaCtrl::SetPlaybackRate
 314 // wxMediaCtrl::Seek --> SetPosition
 315 // wxMediaCtrl::Tell --> GetPosition
 316 // wxMediaCtrl::Length --> GetDuration
 317 // wxMediaCtrl::GetState
 318 // wxMediaCtrl::DoGetBestSize
 319 // wxMediaCtrl::SetVolume
 320 // wxMediaCtrl::GetVolume
 321 // wxMediaCtrl::ShowInterface
 322 // wxMediaCtrl::GetDownloadProgress
 323 // wxMediaCtrl::GetDownloadTotal
 324 //
 325 // 1) Check to see whether the backend exists and is loading
 326 // 2) Call the backend's version of the method, returning success
 327 //    if the backend's version succeeds
 328 //---------------------------------------------------------------------------
 329 bool wxMediaCtrl::Play()
 330 {
 331     if(m_imp && m_bLoaded)
 332         return m_imp->Play();
 333     return 0;
 334 }
 335
 336 bool wxMediaCtrl::Pause()
 337 {
 338     if(m_imp && m_bLoaded)
 339         return m_imp->Pause();
 340     return 0;
 341 }
 342
 343 bool wxMediaCtrl::Stop()
 344 {
 345     if(m_imp && m_bLoaded)
 346         return m_imp->Stop();
 347     return 0;
 348 }
 349
 350 double wxMediaCtrl::GetPlaybackRate()
 351 {
 352     if(m_imp && m_bLoaded)
 353         return m_imp->GetPlaybackRate();
 354     return 0;
 355 }
 356
 357 bool wxMediaCtrl::SetPlaybackRate(double dRate)
 358 {
 359     if(m_imp && m_bLoaded)
 360         return m_imp->SetPlaybackRate(dRate);
 361     return false;
 362 }
 363
 364 wxFileOffset wxMediaCtrl::Seek(wxFileOffset where, wxSeekMode mode)
 365 {
 366     wxFileOffset offset;
 367
 368     switch (mode)
 369     {
 370     case wxFromStart:
 371         offset = where;
 372         break;
 373     case wxFromEnd:
 374         offset = Length() - where;
 375         break;
 376 //    case wxFromCurrent:
 377     default:
 378         offset = Tell() + where;
 379         break;
 380     }
 381
 382     if(m_imp && m_bLoaded && m_imp->SetPosition(offset))
 383         return offset;
 384     return wxInvalidOffset;
 385 }
 386
 387 wxFileOffset wxMediaCtrl::Tell()
 388 {
 389     if(m_imp && m_bLoaded)
 390         return (wxFileOffset) m_imp->GetPosition().ToLong();
 391     return wxInvalidOffset;
 392 }
 393
 394 wxFileOffset wxMediaCtrl::Length()
 395 {
 396     if(m_imp && m_bLoaded)
 397         return (wxFileOffset) m_imp->GetDuration().ToLong();
 398     return wxInvalidOffset;
 399 }
 400
 401 wxMediaState wxMediaCtrl::GetState()
 402 {
 403     if(m_imp && m_bLoaded)
 404         return m_imp->GetState();
 405     return wxMEDIASTATE_STOPPED;
 406 }
 407
 408 wxSize wxMediaCtrl::DoGetBestSize() const
 409 {
 410     if(m_imp)
 411         return m_imp->GetVideoSize();
 412     return wxSize(0,0);
 413 }
 414
 415 double wxMediaCtrl::GetVolume()
 416 {
 417     if(m_imp && m_bLoaded)
 418         return m_imp->GetVolume();
 419     return 0.0;
 420 }
 421
 422 bool wxMediaCtrl::SetVolume(double dVolume)
 423 {
 424     if(m_imp && m_bLoaded)
 425         return m_imp->SetVolume(dVolume);
 426     return false;
 427 }
 428
 429 bool wxMediaCtrl::ShowPlayerControls(wxMediaCtrlPlayerControls flags)
 430 {
 431     if(m_imp)
 432         return m_imp->ShowPlayerControls(flags);
 433     return false;
 434 }
 435
 436 wxFileOffset wxMediaCtrl::GetDownloadProgress()
 437 {
 438     if(m_imp && m_bLoaded)
 439         return (wxFileOffset) m_imp->GetDownloadProgress().ToLong();
 440     return wxInvalidOffset;
 441 }
 442
 443 wxFileOffset wxMediaCtrl::GetDownloadTotal()
 444 {
 445     if(m_imp && m_bLoaded)
 446         return (wxFileOffset) m_imp->GetDownloadTotal().ToLong();
 447     return wxInvalidOffset;
 448 }
 449
 450 //---------------------------------------------------------------------------
 451 // wxMediaCtrl::DoMoveWindow
 452 //
 453 // 1) Call parent's version so that our control's window moves where
 454 //    it's supposed to
 455 // 2) If the backend exists and is loaded, move the video
 456 //    of the media to where our control's window is now located
 457 //---------------------------------------------------------------------------
 458 void wxMediaCtrl::DoMoveWindow(int x, int y, int w, int h)
 459 {
 460     wxControl::DoMoveWindow(x,y,w,h);
 461
 462     if(m_imp)
 463         m_imp->Move(x, y, w, h);
 464 }
 465
 466 //---------------------------------------------------------------------------
 467 // wxMediaCtrl::MacVisibilityChanged
 468 //---------------------------------------------------------------------------
 469 #ifdef __WXOSX_CARBON__
 470 void wxMediaCtrl::MacVisibilityChanged()
 471 {
 472     wxControl::MacVisibilityChanged();
 473
 474     if(m_imp)
 475         m_imp->MacVisibilityChanged();
 476 }
 477 #endif
 478
 479 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 480 //
 481 //  wxMediaBackendCommonBase
 482 //
 483 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 484
 485 void wxMediaBackendCommonBase::NotifyMovieSizeChanged()
 486 {
 487     // our best size changed after opening a new file
 488     m_ctrl->InvalidateBestSize();
 489     m_ctrl->SetSize(m_ctrl->GetSize());
 490
 491     // if the parent of the control has a sizer ask it to refresh our size
 492     wxWindow * const parent = m_ctrl->GetParent();
 493     if ( parent->GetSizer() )
 494     {
 495         m_ctrl->GetParent()->Layout();
 496         m_ctrl->GetParent()->Refresh();
 497         m_ctrl->GetParent()->Update();
 498     }
 499 }
 500
 501 void wxMediaBackendCommonBase::NotifyMovieLoaded()
 502 {
 503     NotifyMovieSizeChanged();
 504
 505     // notify about movie being fully loaded
 506     QueueEvent(wxEVT_MEDIA_LOADED);
 507 }
 508
 509 bool wxMediaBackendCommonBase::SendStopEvent()
 510 {
 511     wxMediaEvent theEvent(wxEVT_MEDIA_STOP, m_ctrl->GetId());
 512
 513     return !m_ctrl->GetEventHandler()->ProcessEvent(theEvent) || theEvent.IsAllowed();
 514 }
 515
 516 void wxMediaBackendCommonBase::QueueEvent(wxEventType evtType)
 517 {
 518     wxMediaEvent theEvent(evtType, m_ctrl->GetId());
 519     m_ctrl->GetEventHandler()->AddPendingEvent(theEvent);
 520 }
 521
 522 void wxMediaBackendCommonBase::QueuePlayEvent()
 523 {
 524     QueueEvent(wxEVT_MEDIA_STATECHANGED);
 525     QueueEvent(wxEVT_MEDIA_PLAY);
 526 }
 527
 528 void wxMediaBackendCommonBase::QueuePauseEvent()
 529 {
 530     QueueEvent(wxEVT_MEDIA_STATECHANGED);
 531     QueueEvent(wxEVT_MEDIA_PAUSE);
 532 }
 533
 534 void wxMediaBackendCommonBase::QueueStopEvent()
 535 {
 536     QueueEvent(wxEVT_MEDIA_STATECHANGED);
 537     QueueEvent(wxEVT_MEDIA_STOP);
 538 }
 539
 540
 541 //
 542 // Force link default backends in -
 543 // see http://wiki.wxwidgets.org/wiki.pl?RTTI
 544 //
 545 #include "wx/html/forcelnk.h"
 546
 547 #ifdef __WXMSW__ // MSW has huge backends so we do it seperately
 548 FORCE_LINK(wxmediabackend_am)
 549 FORCE_LINK(wxmediabackend_wmp10)
 550 #elif !defined(__WXOSX_COCOA__)
 551 FORCE_LINK(basewxmediabackends)
 552 #endif
 553
 554 #endif //wxUSE_MEDIACTRL