src/msw/mediactrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/mediactrl.cpp
   3 // Purpose:     wxMediaCtrl MSW
   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 //---------------------------------------------------------------------------
  13 //      Pre-wx includes
  14 //---------------------------------------------------------------------------
  15
  16 //#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  17 //#pragma implementation "moviectrl.h"
  18 //#endif
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24 #pragma hdrstop
  25 #endif
  26
  27 #include "wx/mediactrl.h"
  28
  29 #if wxUSE_MEDIACTRL
  30
  31 //###########################################################################
  32 //  DECLARATIONS
  33 //###########################################################################
  34
  35 IMPLEMENT_CLASS(wxMediaCtrl, wxControl);
  36 IMPLEMENT_DYNAMIC_CLASS(wxMediaEvent, wxEvent);
  37 DEFINE_EVENT_TYPE(wxEVT_MEDIA_FINISHED);
  38
  39 //---------------------------------------------------------------------------
  40 //  wxMediaCtrlImpl
  41 //---------------------------------------------------------------------------
  42
  43 class wxMediaCtrlImpl
  44 {
  45 public:
  46     wxMediaCtrlImpl() : m_bLoaded(false)
  47     {                                                                   }
  48
  49     virtual ~wxMediaCtrlImpl()
  50     {                               }
  51
  52     virtual bool Create(wxMediaCtrl* WXUNUSED(ctrl))
  53     {   return false;               }
  54
  55     virtual bool Play() { return false; }
  56     virtual bool Pause() { return false; }
  57     virtual bool Stop() { return false; }
  58
  59     virtual bool Load(const wxString&) { return false; }
  60     virtual bool Load(const wxURI&) { return false; }
  61
  62     virtual wxMediaState GetState() { return wxMEDIASTATE_STOPPED; }
  63
  64     virtual bool SetPosition(long) { return 0; }
  65     virtual long GetPosition() { return 0; }
  66     virtual long GetDuration() { return 0; }
  67
  68     virtual void DoMoveWindow(int, int, int, int) {  }
  69     virtual wxSize DoGetBestSize() const { return wxSize(0,0); }
  70
  71     virtual double GetPlaybackRate() { return 0; }
  72     virtual bool SetPlaybackRate(double) { return false; }
  73
  74     virtual bool MSWWindowProc(WXUINT, WXWPARAM, WXLPARAM) { return false; }
  75
  76     bool IsLoaded()
  77     {   return m_bLoaded;   }
  78
  79     bool m_bLoaded;
  80 };
  81
  82 //---------------------------------------------------------------------------
  83 //  wxDXMediaCtrlImpl
  84 //---------------------------------------------------------------------------
  85
  86 #if wxUSE_DIRECTSHOW
  87
  88 #include <dshow.h>
  89
  90 #define WM_GRAPHNOTIFY  WM_USER+13
  91
  92 #ifdef __WXDEBUG__
  93 #define wxDSVERIFY(x) wxASSERT( SUCCEEDED ((x)) )
  94 #else
  95 #define wxDSVERIFY(x) (x)
  96 #endif
  97
  98 class wxDXMediaCtrlImpl : public wxMediaCtrlImpl
  99 {
 100 public:
 101     wxDXMediaCtrlImpl();
 102
 103     virtual ~wxDXMediaCtrlImpl();
 104
 105     virtual bool Create(wxMediaCtrl* ctrl);
 106
 107     virtual bool Play();
 108     virtual bool Pause();
 109     virtual bool Stop();
 110
 111     virtual bool Load(const wxString& fileName);
 112     virtual bool Load(const wxURI& location);
 113
 114     virtual wxMediaState GetState();
 115
 116     virtual bool SetPosition(long where);
 117     virtual long GetPosition();
 118     virtual long GetDuration();
 119
 120     virtual void DoMoveWindow(int x, int y, int w, int h);
 121     wxSize DoGetBestSize() const;
 122
 123     virtual double GetPlaybackRate();
 124     virtual bool SetPlaybackRate(double);
 125
 126     void Cleanup();
 127
 128     bool m_bVideo;
 129
 130     bool MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
 131
 132     wxMediaCtrl* m_ctrl;
 133
 134     IGraphBuilder* m_pGB;
 135     IMediaControl* m_pMC;
 136     IMediaEventEx* m_pME;
 137     IVideoWindow* m_pVW;
 138     IBasicAudio* m_pBA;
 139     IBasicVideo* m_pBV;
 140     IMediaSeeking* m_pMS;
 141
 142     wxSize m_bestSize;
 143 };
 144
 145 #endif //wxUSE_DIRECTSHOW
 146
 147 //---------------------------------------------------------------------------
 148 //  wxWMMEMediaCtrlImpl
 149 //---------------------------------------------------------------------------
 150
 151 #include <mmsystem.h>
 152
 153 class wxWMMEMediaCtrlImpl : public wxMediaCtrlImpl
 154 {
 155 public:
 156
 157     wxWMMEMediaCtrlImpl();
 158     ~wxWMMEMediaCtrlImpl();
 159
 160     virtual bool Create(wxMediaCtrl* ctrl);
 161
 162     virtual bool Play();
 163     virtual bool Pause();
 164     virtual bool Stop();
 165
 166     virtual bool Load(const wxString& fileName);
 167     virtual bool Load(const wxURI& location);
 168
 169     virtual wxMediaState GetState();
 170
 171     virtual bool SetPosition(long where);
 172     virtual long GetPosition();
 173     virtual long GetDuration();
 174
 175     virtual void DoMoveWindow(int x, int y, int w, int h);
 176     wxSize DoGetBestSize() const;
 177
 178     virtual double GetPlaybackRate();
 179     virtual bool SetPlaybackRate(double);
 180
 181     bool MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
 182
 183     MCIDEVICEID m_hDev;
 184     wxMediaCtrl* m_ctrl;
 185     bool m_bVideo;
 186 };
 187
 188 //###########################################################################
 189 //
 190 //  IMPLEMENTATION
 191 //
 192 //###########################################################################
 193
 194 //---------------------------------------------------------------------------
 195 //
 196 //  wxMediaCtrl
 197 //
 198 //---------------------------------------------------------------------------
 199
 200 bool wxMediaCtrl::Create(wxWindow* parent, wxWindowID id, const wxString& fileName,
 201                          const wxPoint& pos, const wxSize& size,
 202                          long style, long WXUNUSED(driver), const wxString& name)
 203 {
 204     //base create
 205     if ( !wxControl::Create(parent, id, pos, size, (style | wxNO_BORDER) | wxCLIP_CHILDREN,
 206                             wxDefaultValidator, name) )
 207         return false;
 208
 209     //Set our background color to black by default
 210     SetBackgroundColour(*wxBLACK);
 211
 212 #if wxUSE_DIRECTSHOW
 213     m_imp = new wxDXMediaCtrlImpl;
 214     if(!m_imp->Create(this))
 215     {
 216         delete m_imp;
 217 #endif
 218         m_imp = new wxWMMEMediaCtrlImpl;
 219         if(!m_imp->Create(this))
 220         {
 221             delete m_imp;
 222             m_imp = NULL;
 223             return false;
 224         }
 225 #if wxUSE_DIRECTSHOW
 226     }
 227 #endif
 228
 229     if(!fileName.empty())
 230     {
 231         if (!Load(fileName))
 232             return false;
 233     }
 234
 235     return true;
 236 }
 237
 238 bool wxMediaCtrl::Create(wxWindow* parent, wxWindowID id, const wxURI& location,
 239                          const wxPoint& pos, const wxSize& size,
 240                          long style, long WXUNUSED(driver), const wxString& name)
 241 {
 242     //base create
 243     if ( !wxControl::Create(parent, id, pos, size, (style | wxNO_BORDER) | wxCLIP_CHILDREN,
 244                             wxDefaultValidator, name) )
 245         return false;
 246
 247     //Set our background color to black by default
 248     SetBackgroundColour(*wxBLACK);
 249
 250 #if wxUSE_DIRECTSHOW
 251     m_imp = new wxDXMediaCtrlImpl;
 252     if(!m_imp->Create(this))
 253     {
 254         delete m_imp;
 255 #endif
 256         m_imp = new wxWMMEMediaCtrlImpl;
 257         if(!m_imp->Create(this))
 258         {
 259             delete m_imp;
 260             m_imp = NULL;
 261             return false;
 262         }
 263 #if wxUSE_DIRECTSHOW
 264     }
 265 #endif
 266
 267     if (!Load(location))
 268         return false;
 269
 270     return true;
 271 }
 272
 273 bool wxMediaCtrl::Load(const wxString& fileName)
 274 {
 275     if(m_imp)
 276         return m_imp->Load(fileName);
 277     return false;
 278 }
 279
 280 bool wxMediaCtrl::Load(const wxURI& location)
 281 {
 282     if(m_imp)
 283         return m_imp->Load(location);
 284     return false;
 285 }
 286
 287 bool wxMediaCtrl::Play()
 288 {
 289     if(m_imp && m_imp->IsLoaded())
 290         return m_imp->Play();
 291     return false;
 292 }
 293
 294 bool wxMediaCtrl::Pause()
 295 {
 296     if(m_imp && m_imp->IsLoaded())
 297         return m_imp->Pause();
 298     return false;
 299 }
 300
 301 bool wxMediaCtrl::Stop()
 302 {
 303     if(m_imp && m_imp->IsLoaded())
 304         return m_imp->Stop();
 305     return false;
 306 }
 307
 308 double wxMediaCtrl::GetPlaybackRate()
 309 {
 310     if(m_imp && m_imp->IsLoaded())
 311         return m_imp->GetPlaybackRate();
 312     return 0;
 313 }
 314
 315 bool wxMediaCtrl::SetPlaybackRate(double dRate)
 316 {
 317     if(m_imp && m_imp->IsLoaded())
 318         return m_imp->SetPlaybackRate(dRate);
 319     return false;
 320 }
 321
 322 bool wxMediaCtrl::SetPosition(long where)
 323 {
 324     if(m_imp && m_imp->IsLoaded())
 325         return m_imp->SetPosition(where);
 326     return false;
 327 }
 328
 329 long wxMediaCtrl::GetPosition()
 330 {
 331     if(m_imp && m_imp->IsLoaded())
 332         return m_imp->GetPosition();
 333     return 0;
 334 }
 335
 336 long wxMediaCtrl::GetDuration()
 337 {
 338     if(m_imp && m_imp->IsLoaded())
 339         return m_imp->GetDuration();
 340     return 0;
 341 }
 342
 343 wxMediaState wxMediaCtrl::GetState()
 344 {
 345     if(m_imp && m_imp->IsLoaded())
 346         return m_imp->GetState();
 347     return wxMEDIASTATE_STOPPED;
 348 }
 349
 350 WXLRESULT wxMediaCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 351 {
 352     if(m_imp && m_imp->IsLoaded() && m_imp->MSWWindowProc(nMsg, wParam, lParam) )
 353            return wxControl::MSWDefWindowProc(nMsg, wParam, lParam);
 354     //pass the event to our parent
 355     return wxControl::MSWWindowProc(nMsg, wParam, lParam);
 356 }
 357
 358 wxSize wxMediaCtrl::DoGetBestSize() const
 359 {
 360     if(m_imp && m_imp->IsLoaded())
 361         return m_imp->DoGetBestSize();
 362     return wxSize(0,0);
 363 }
 364
 365 void wxMediaCtrl::DoMoveWindow(int x, int y, int w, int h)
 366 {
 367     wxControl::DoMoveWindow(x,y,w,h);
 368
 369     if(m_imp && m_imp->IsLoaded())
 370         m_imp->DoMoveWindow(x, y, w, h);
 371 }
 372
 373 wxMediaCtrl::~wxMediaCtrl()
 374 {
 375     if (m_imp)
 376         delete m_imp;
 377 }
 378
 379
 380 //---------------------------------------------------------------------------
 381 //
 382 //  wxDXMediaCtrlImpl
 383 //
 384 //---------------------------------------------------------------------------
 385
 386 #if wxUSE_DIRECTSHOW
 387
 388 wxDXMediaCtrlImpl::wxDXMediaCtrlImpl() : m_pGB(NULL)
 389 {
 390 }
 391
 392 bool wxDXMediaCtrlImpl::Create(wxMediaCtrl* ctrl)
 393 {
 394     //create our filter graph
 395    HRESULT hr = CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER,
 396                       IID_IGraphBuilder, (void**)&m_pGB);
 397
 398    //directshow not installed?
 399     if ( FAILED(hr) )
 400         return false;
 401
 402     m_ctrl = ctrl;
 403
 404     return true;
 405 }
 406
 407 #define SAFE_RELEASE(x) { if (x) x->Release(); x = NULL; }
 408
 409 bool wxDXMediaCtrlImpl::Load(const wxString& fileName)
 410 {
 411     if(m_bLoaded)
 412         Cleanup();
 413
 414     SAFE_RELEASE(m_pGB);
 415
 416     CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER,
 417                       IID_IGraphBuilder, (void**)&m_pGB);
 418
 419     //load the graph & render
 420     if( FAILED(m_pGB->RenderFile(fileName.wc_str(wxConvLocal), NULL)) )
 421         return false;
 422
 423     //get the interfaces, all of them
 424     wxDSVERIFY( m_pGB->QueryInterface(IID_IMediaControl, (void**)&m_pMC) );
 425     wxDSVERIFY( m_pGB->QueryInterface(IID_IMediaEventEx, (void**)&m_pME) );
 426     wxDSVERIFY( m_pGB->QueryInterface(IID_IMediaSeeking, (void**)&m_pMS) );
 427     wxDSVERIFY( m_pGB->QueryInterface(IID_IVideoWindow, (void**)&m_pVW) );
 428     wxDSVERIFY( m_pGB->QueryInterface(IID_IBasicAudio, (void**)&m_pBA) );
 429     wxDSVERIFY( m_pGB->QueryInterface(IID_IBasicVideo, (void**)&m_pBV) );
 430
 431     //long lVolume;
 432     //pBA->get_Volume(&lVolume);
 433     //E_NOTIMPL
 434
 435     //get the _actual_ size of the movie & remember it
 436     long nX, nY, nSX, nSY;
 437     if (FAILED(m_pVW->GetWindowPosition(&nX,&nY,&nSX,&nSY)))
 438     {
 439         m_bVideo = false;
 440
 441         nSX = nSY = 0;
 442     }
 443     else
 444     {
 445         m_bVideo = true;
 446     }
 447
 448     m_bestSize.x = nSX;
 449     m_bestSize.y = nSY;
 450
 451     if (m_bVideo)
 452     {
 453         wxDSVERIFY( m_pVW->put_Owner((OAHWND)m_ctrl->GetHandle()) );
 454         wxDSVERIFY( m_pVW->put_WindowStyle(WS_CHILD | WS_CLIPSIBLINGS) );
 455         wxDSVERIFY( m_pVW->put_Visible(OATRUE) ); //OATRUE == -1
 456     }
 457
 458     //make it so that wxEVT_MOVIE_FINISHED works
 459     wxDSVERIFY( m_pME->SetNotifyWindow((OAHWND)m_ctrl->GetHandle(), WM_GRAPHNOTIFY, 0) );
 460
 461     //set the time format
 462     wxDSVERIFY( m_pMS->SetTimeFormat(&TIME_FORMAT_MEDIA_TIME) );
 463
 464     //so that DoGetBestSize will work :)
 465     m_bLoaded = true;
 466
 467     //work around refresh issues
 468     m_ctrl->InvalidateBestSize();
 469     m_ctrl->GetParent()->Layout();
 470     m_ctrl->GetParent()->Refresh();
 471     m_ctrl->GetParent()->Update();
 472
 473     return true;
 474 }
 475
 476 bool wxDXMediaCtrlImpl::Load(const wxURI& location)
 477 {
 478     return Load(location.BuildUnescapedURI());
 479 }
 480
 481 bool wxDXMediaCtrlImpl::Play()
 482 {
 483     return SUCCEEDED( m_pMC->Run() );
 484 }
 485
 486 bool wxDXMediaCtrlImpl::Pause()
 487 {
 488     return SUCCEEDED( m_pMC->Pause() );
 489 }
 490
 491 bool wxDXMediaCtrlImpl::Stop()
 492 {
 493     bool bOK = SUCCEEDED( m_pMC->Stop() );
 494
 495     //We don't care if it can't get to the beginning in directshow -
 496     //it could be a non-seeking filter (wince midi) in which case playing
 497     //starts all over again
 498     SetPosition(0);
 499     return bOK;
 500 }
 501
 502 bool wxDXMediaCtrlImpl::SetPosition(long where)
 503 {
 504     //DS uses 100 nanos - so we need a 10 mult
 505     LONGLONG pos = ((LONGLONG)where) * 10000;
 506
 507     return SUCCEEDED( m_pMS->SetPositions(
 508                                 &pos,
 509                                 AM_SEEKING_AbsolutePositioning,
 510                                 NULL,
 511                                 AM_SEEKING_NoPositioning
 512                                     ) );
 513 }
 514
 515 long wxDXMediaCtrlImpl::GetPosition()
 516 {
 517     LONGLONG outCur, outStop;
 518     wxDSVERIFY( m_pMS->GetPositions(&outCur, &outStop) );
 519
 520     //h,m,s,milli - outdur is in 100 nanos
 521     return outCur/10000;
 522 }
 523
 524 long wxDXMediaCtrlImpl::GetDuration()
 525 {
 526     LONGLONG outDuration;
 527     wxDSVERIFY( m_pMS->GetDuration(&outDuration) );
 528
 529     //h,m,s,milli - outdur is in 100 nanos
 530     return outDuration/10000;
 531 }
 532
 533 wxMediaState wxDXMediaCtrlImpl::GetState()
 534 {
 535     //TODO: MS recommends against INFINITE here - do it in stages
 536     HRESULT hr;
 537     OAFilterState theState;
 538     hr = m_pMC->GetState(INFINITE, &theState);
 539
 540     wxASSERT( SUCCEEDED(hr) );
 541
 542     //MSW state is the same as ours
 543     //State_Stopped   = 0,
 544     //State_Paused    = State_Stopped + 1,
 545     //State_Running   = State_Paused + 1
 546
 547     return (wxMediaState) theState;
 548 }
 549
 550 double wxDXMediaCtrlImpl::GetPlaybackRate()
 551 {
 552     double dRate;
 553     wxDSVERIFY( m_pMS->GetRate(&dRate) );
 554     return dRate;
 555 }
 556
 557 bool wxDXMediaCtrlImpl::SetPlaybackRate(double dRate)
 558 {
 559     return SUCCEEDED( m_pMS->SetRate(dRate) );
 560 }
 561
 562 bool wxDXMediaCtrlImpl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 563 {
 564     if (nMsg == WM_GRAPHNOTIFY)
 565     {
 566         LONG evCode, evParam1, evParam2;
 567         HRESULT hr=S_OK;
 568
 569         // Process all queued events
 570         while(SUCCEEDED(m_pME->GetEvent(&evCode, (LONG_PTR *) &evParam1,
 571                                        (LONG_PTR *) &evParam2, 0)
 572                        )
 573              )
 574         {
 575             // Free memory associated with callback, since we're not using it
 576             hr = m_pME->FreeEventParams(evCode, evParam1, evParam2);
 577
 578             // If this is the end of the clip, notify handler
 579             if(EC_COMPLETE == evCode)
 580             {
 581                 //Interestingly enough, DirectShow does not actually stop
 582                 //the filters - even when it reaches the end!
 583 #ifdef __WXDEBUG__
 584                 wxASSERT( Stop() );
 585 #else
 586                 Stop();
 587 #endif
 588
 589                 wxMediaEvent theEvent(wxEVT_MEDIA_FINISHED, m_ctrl->GetId());
 590                 m_ctrl->GetParent()->ProcessEvent(theEvent);
 591             }
 592         }
 593         return true;
 594     }
 595     return false;
 596 }
 597
 598 void wxDXMediaCtrlImpl::Cleanup()
 599 {
 600     // Hide then disown the window
 601     if(m_pVW)
 602     {
 603         m_pVW->put_Visible(OAFALSE); //OSFALSE == 0
 604         m_pVW->put_Owner(NULL);
 605     }
 606
 607     // Release and zero DirectShow interfaces
 608     SAFE_RELEASE(m_pME);
 609     SAFE_RELEASE(m_pMS);
 610     SAFE_RELEASE(m_pMC);
 611     SAFE_RELEASE(m_pBA);
 612     SAFE_RELEASE(m_pBV);
 613     SAFE_RELEASE(m_pVW);
 614 }
 615
 616 wxDXMediaCtrlImpl::~wxDXMediaCtrlImpl()
 617 {
 618     if (m_bLoaded)
 619         Cleanup();
 620
 621     SAFE_RELEASE(m_pGB);
 622 }
 623
 624 wxSize wxDXMediaCtrlImpl::DoGetBestSize() const
 625 {
 626     return m_bestSize;
 627 }
 628
 629 void wxDXMediaCtrlImpl::DoMoveWindow(int x, int y, int w, int h)
 630 {
 631     if(m_bLoaded && m_bVideo)
 632     {
 633         wxDSVERIFY( m_pVW->SetWindowPosition(0, 0, w, h) );
 634     }
 635 }
 636
 637 #endif //wxUSE_DIRECTSHOW
 638
 639 //---------------------------------------------------------------------------
 640 //
 641 //  wxWMMEMediaCtrlImpl
 642 //
 643 //---------------------------------------------------------------------------
 644
 645 //
 646 // Cruft to simulate digitalv.h
 647 //
 648
 649 typedef struct {
 650     DWORD_PTR   dwCallback;
 651 #ifdef MCI_USE_OFFEXT
 652     POINT   ptOffset;
 653     POINT   ptExtent;
 654 #else
 655     RECT    rc;
 656 #endif
 657 } MCI_DGV_RECT_PARMS;
 658
 659 typedef struct {
 660     DWORD_PTR   dwCallback;
 661     HWND    hWnd;
 662 #ifndef _WIN32
 663     WORD    wReserved1;
 664 #endif
 665     UINT    nCmdShow;
 666 #ifndef _WIN32
 667     WORD    wReserved2;
 668 #endif
 669     LPSTR   lpstrText;
 670 } MCI_DGV_WINDOW_PARMSA;
 671
 672 typedef struct {
 673     DWORD_PTR   dwCallback;
 674     HWND    hWnd;
 675 #ifndef _WIN32
 676     WORD    wReserved1;
 677 #endif
 678     UINT    nCmdShow;
 679 #ifndef _WIN32
 680     WORD    wReserved2;
 681 #endif
 682     LPWSTR  lpstrText;
 683 } MCI_DGV_WINDOW_PARMSW;
 684 #ifdef UNICODE
 685 typedef MCI_DGV_WINDOW_PARMSW MCI_DGV_WINDOW_PARMS;
 686 #else
 687 typedef MCI_DGV_WINDOW_PARMSA MCI_DGV_WINDOW_PARMS;
 688 #endif // UNICODE
 689
 690 wxWMMEMediaCtrlImpl::wxWMMEMediaCtrlImpl() : m_bVideo(false)
 691 {
 692 /*        TCHAR sz[5000];
 693          mciGetErrorString(nError, sz, 5000);
 694             wxMessageBox(wxString::Format(_T("Error:%s"), sz));
 695   */
 696 }
 697
 698 wxWMMEMediaCtrlImpl::~wxWMMEMediaCtrlImpl()
 699 {
 700     mciSendCommand(m_hDev, MCI_CLOSE, 0, 0);
 701 }
 702
 703 bool wxWMMEMediaCtrlImpl::Create(wxMediaCtrl* ctrl)
 704 {
 705     m_ctrl = ctrl;
 706     return true;
 707 }
 708
 709 bool wxWMMEMediaCtrlImpl::Load(const wxString& fileName)
 710 {
 711     if(m_bLoaded)
 712         mciSendCommand(m_hDev, MCI_CLOSE, 0, 0);
 713
 714     MCI_OPEN_PARMS openParms;
 715     MCI_SET_PARMS setParms;
 716
 717     openParms.lpstrElementName = (wxChar*) fileName.c_str();
 718
 719     //Here's where the trick lies - if you don't specify MCI_OPEN_TYPE,
 720     //then it actually automagically finds the device for you!
 721     if ( mciSendCommand(0, MCI_OPEN,
 722          MCI_OPEN_ELEMENT,
 723         (DWORD)(LPVOID)&openParms) != 0)
 724     return false;
 725
 726     m_hDev = openParms.wDeviceID;
 727
 728     setParms.dwCallback = 0;
 729     setParms.dwTimeFormat = MCI_FORMAT_MILLISECONDS;
 730
 731     if (mciSendCommand(m_hDev, MCI_SET, MCI_SET_TIME_FORMAT,
 732                          (DWORD)(LPVOID)&setParms) != 0)
 733         return false;
 734
 735     MCI_DGV_WINDOW_PARMS windowParms;
 736
 737     windowParms.hWnd = (HWND)m_ctrl->GetHandle();
 738     m_bVideo = (mciSendCommand(m_hDev, MCI_WINDOW,
 739                          0x00010000L //MCI_DGV_WINDOW_HWND
 740                          ,
 741                          (DWORD)(LPVOID)&windowParms) == 0);
 742     m_bLoaded = true;
 743
 744     //work around refresh issues
 745     m_ctrl->InvalidateBestSize();
 746     m_ctrl->GetParent()->Layout();
 747     m_ctrl->GetParent()->Refresh();
 748     m_ctrl->GetParent()->Update();
 749
 750     return true;
 751 }
 752
 753 bool wxWMMEMediaCtrlImpl::Load(const wxURI& WXUNUSED(location))
 754 {
 755     return false;
 756 }
 757
 758 bool wxWMMEMediaCtrlImpl::Play()
 759 {
 760     //the directshow driver ("mpegvideo") will crash if we don't do a playParms here
 761     MCI_PLAY_PARMS playParms;
 762     playParms.dwCallback = (WORD)(HWND)m_ctrl->GetHWND();
 763     bool bOK = mciSendCommand(m_hDev, MCI_PLAY, MCI_NOTIFY, (DWORD)(LPVOID)&playParms) == 0;
 764     return (bOK) ;/*||
 765            (mciSendCommand(m_hDev, MCI_RESUME, 0, 0) == 0);*/
 766 }
 767
 768 bool wxWMMEMediaCtrlImpl::Pause()
 769 {
 770     return (mciSendCommand(m_hDev, MCI_PAUSE, MCI_WAIT, 0) == 0);
 771 }
 772
 773 bool wxWMMEMediaCtrlImpl::Stop()
 774 {
 775     return (mciSendCommand(m_hDev, MCI_STOP, MCI_WAIT, 0) == 0) &&
 776            (mciSendCommand(m_hDev, MCI_SEEK, MCI_SEEK_TO_START, 0) == 0);
 777 }
 778
 779
 780 wxMediaState wxWMMEMediaCtrlImpl::GetState()
 781 {
 782     MCI_STATUS_PARMS statusParms;
 783     statusParms.dwItem = MCI_STATUS_MODE;
 784     mciSendCommand(m_hDev, MCI_STATUS, MCI_STATUS_ITEM,
 785                          (DWORD)(LPVOID)&statusParms);
 786
 787     if(statusParms.dwReturn == MCI_MODE_PAUSE)
 788         return wxMEDIASTATE_PAUSED;
 789     else if(statusParms.dwReturn == MCI_MODE_PLAY)
 790         return wxMEDIASTATE_PLAYING;
 791     else
 792         return wxMEDIASTATE_STOPPED;
 793 }
 794
 795 bool wxWMMEMediaCtrlImpl::SetPosition(long where)
 796 {
 797     MCI_SEEK_PARMS seekParms;
 798     seekParms.dwCallback = 0;
 799     seekParms.dwTo = where;
 800
 801     bool bReplay = GetState() == wxMEDIASTATE_PLAYING;
 802
 803     if( mciSendCommand(m_hDev, MCI_SEEK, MCI_TO, (DWORD)(LPVOID)&seekParms) != 0)
 804         return false;
 805
 806     if (bReplay)
 807         return Play();
 808     else
 809         return true;
 810 }
 811
 812 long wxWMMEMediaCtrlImpl::GetPosition()
 813 {
 814     MCI_STATUS_PARMS statusParms;
 815
 816     statusParms.dwItem = MCI_STATUS_POSITION;
 817     if (mciSendCommand(m_hDev, MCI_STATUS, MCI_STATUS_ITEM,
 818         (DWORD)(LPSTR)&statusParms) != 0)
 819         return 0;
 820
 821     return statusParms.dwReturn;
 822 }
 823
 824 long wxWMMEMediaCtrlImpl::GetDuration()
 825 {
 826     MCI_STATUS_PARMS statusParms;
 827
 828     statusParms.dwItem = MCI_STATUS_LENGTH;
 829     if (mciSendCommand(m_hDev, MCI_STATUS, MCI_STATUS_ITEM,
 830         (DWORD)(LPSTR)&statusParms) != 0)
 831         return 0;
 832
 833     return statusParms.dwReturn;
 834 }
 835
 836 void wxWMMEMediaCtrlImpl::DoMoveWindow(int, int, int, int)
 837 {
 838 }
 839
 840 wxSize wxWMMEMediaCtrlImpl::DoGetBestSize() const
 841 {
 842     if(m_bVideo)
 843     {
 844         MCI_DGV_RECT_PARMS rect;
 845
 846         mciSendCommand(m_hDev, MCI_WHERE, 0x00020000L//MCI_DGV_WHERE_SOURCE
 847             ,
 848             (DWORD)(LPSTR)&rect);
 849         return wxSize(rect.rc.right, rect.rc.bottom);
 850     }
 851     return wxSize(0,0);
 852 }
 853
 854 double wxWMMEMediaCtrlImpl::GetPlaybackRate()
 855 {
 856     return 1.0;
 857 }
 858
 859 bool wxWMMEMediaCtrlImpl::SetPlaybackRate(double)
 860 {
 861     return false;
 862 }
 863
 864 bool wxWMMEMediaCtrlImpl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 865 {
 866     if(nMsg == MM_MCINOTIFY)
 867     {
 868         wxASSERT(lParam == (WXLPARAM) m_hDev);
 869         if(wParam == (WXWPARAM) MCI_NOTIFY_SUCCESSFUL && lParam == (WXLPARAM) m_hDev)
 870         {
 871 #ifdef __WXDEBUG__
 872             wxASSERT(mciSendCommand(m_hDev, MCI_SEEK, MCI_SEEK_TO_START, 0) == 0);
 873 #else
 874             mciSendCommand(m_hDev, MCI_SEEK, MCI_SEEK_TO_START, 0);
 875 #endif
 876
 877             wxMediaEvent theEvent(wxEVT_MEDIA_FINISHED, m_ctrl->GetId());
 878             m_ctrl->GetParent()->ProcessEvent(theEvent);
 879         }
 880         return true;
 881     }
 882     return false;
 883 }
 884
 885 #endif //wxUSE_MEDIACTRL
 886