src/cocoa/mediactrl.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/cocoa/mediactrl.cpp
   3 // Purpose:     Built-in Media Backends for Cocoa
   4 // Author:      Ryan Norton <wxprojects@comcast.net>
   5 // Modified by:
   6 // Created:     02/03/05
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2004-2005 Ryan Norton, (c) 2005 David Elliot
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 //===========================================================================
  13 //  DECLARATIONS
  14 //===========================================================================
  15
  16 //---------------------------------------------------------------------------
  17 // Pre-compiled header stuff
  18 //---------------------------------------------------------------------------
  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 //---------------------------------------------------------------------------
  28 // Compilation guard
  29 //---------------------------------------------------------------------------
  30 #if wxUSE_MEDIACTRL
  31
  32 #include "wx/mediactrl.h"
  33
  34 #ifndef WX_PRECOMP
  35     #include "wx/timer.h"
  36 #endif
  37
  38 //===========================================================================
  39 //  BACKEND DECLARATIONS
  40 //===========================================================================
  41
  42 //---------------------------------------------------------------------------
  43 //
  44 //  wxQTMediaBackend
  45 //
  46 //---------------------------------------------------------------------------
  47
  48 //---------------------------------------------------------------------------
  49 //  QT Includes
  50 //---------------------------------------------------------------------------
  51 #include <QuickTime/QuickTime.h>
  52
  53 #include "wx/cocoa/autorelease.h"
  54 #include "wx/cocoa/string.h"
  55
  56 #import <AppKit/NSMovie.h>
  57 #import <AppKit/NSMovieView.h>
  58
  59
  60 class WXDLLIMPEXP_MEDIA wxQTMediaBackend : public wxMediaBackend
  61 {
  62 public:
  63
  64     wxQTMediaBackend();
  65     ~wxQTMediaBackend();
  66
  67     virtual bool CreateControl(wxControl* ctrl, wxWindow* parent,
  68                                      wxWindowID id,
  69                                      const wxPoint& pos,
  70                                      const wxSize& size,
  71                                      long style,
  72                                      const wxValidator& validator,
  73                                      const wxString& name);
  74
  75     virtual bool Play();
  76     virtual bool Pause();
  77     virtual bool Stop();
  78
  79     virtual bool Load(const wxString& fileName);
  80     virtual bool Load(const wxURI& location);
  81
  82     virtual wxMediaState GetState();
  83
  84     virtual bool SetPosition(wxLongLong where);
  85     virtual wxLongLong GetPosition();
  86     virtual wxLongLong GetDuration();
  87
  88     virtual void Move(int x, int y, int w, int h);
  89     wxSize GetVideoSize() const;
  90
  91     virtual double GetPlaybackRate();
  92     virtual bool SetPlaybackRate(double dRate);
  93
  94     void Cleanup();
  95     void FinishLoad();
  96
  97     wxSize m_bestSize;              //Original movie size
  98     Movie m_movie;                  //QT Movie handle/instance
  99     NSMovieView* m_movieview;       //NSMovieView instance
 100     wxControl* m_ctrl;              //Parent control
 101     bool m_bVideo;                  //Whether or not we have video
 102     class _wxQTTimer* m_timer;      //Timer for streaming the movie
 103
 104     DECLARE_DYNAMIC_CLASS(wxQTMediaBackend);
 105 };
 106
 107
 108 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 109 //
 110 // wxQTMediaBackend
 111 //
 112 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 113
 114 IMPLEMENT_DYNAMIC_CLASS(wxQTMediaBackend, wxMediaBackend);
 115
 116 //Time between timer calls
 117 #define MOVIE_DELAY 100
 118
 119 // --------------------------------------------------------------------------
 120 //          wxQTTimer - Handle Asyncronous Playing
 121 // --------------------------------------------------------------------------
 122 class _wxQTTimer : public wxTimer
 123 {
 124 public:
 125     _wxQTTimer(Movie movie, wxQTMediaBackend* parent) :
 126         m_movie(movie), m_bPaused(false), m_parent(parent)
 127     {
 128     }
 129
 130     ~_wxQTTimer()
 131     {
 132     }
 133
 134     bool GetPaused() {return m_bPaused;}
 135     void SetPaused(bool bPaused) {m_bPaused = bPaused;}
 136
 137     //-----------------------------------------------------------------------
 138     // _wxQTTimer::Notify
 139     //
 140     // 1) Checks to see if the movie is done, and if not continues
 141     //    streaming the movie
 142     // 2) Sends the wxEVT_MEDIA_STOP event if we have reached the end of
 143     //    the movie.
 144     //-----------------------------------------------------------------------
 145     void Notify()
 146     {
 147         if (!m_bPaused)
 148         {
 149             if(!IsMovieDone(m_movie))
 150                 MoviesTask(m_movie, MOVIE_DELAY);
 151             else
 152             {
 153                 wxMediaEvent theEvent(wxEVT_MEDIA_STOP,
 154                                       m_parent->m_ctrl->GetId());
 155                 m_parent->m_ctrl->ProcessEvent(theEvent);
 156
 157                 if(theEvent.IsAllowed())
 158                 {
 159                     Stop();
 160                     m_parent->Stop();
 161                     wxASSERT(::GetMoviesError() == noErr);
 162
 163                     //send the event to our child
 164                     wxMediaEvent theEvent(wxEVT_MEDIA_FINISHED,
 165                                           m_parent->m_ctrl->GetId());
 166                     m_parent->m_ctrl->ProcessEvent(theEvent);
 167                 }
 168             }
 169         }
 170     }
 171
 172 protected:
 173     Movie m_movie;                  //Our movie instance
 174     bool m_bPaused;                 //Whether we are paused or not
 175     wxQTMediaBackend* m_parent;     //Backend pointer
 176 };
 177
 178 //---------------------------------------------------------------------------
 179 // wxQTMediaBackend Constructor
 180 //
 181 // Sets m_timer to NULL signifying we havn't loaded anything yet
 182 //---------------------------------------------------------------------------
 183 wxQTMediaBackend::wxQTMediaBackend() : m_timer(NULL)
 184 {
 185 }
 186
 187 //---------------------------------------------------------------------------
 188 // wxQTMediaBackend Destructor
 189 //
 190 // 1) Cleans up the QuickTime movie instance
 191 // 2) Decrements the QuickTime reference counter - if this reaches
 192 //    0, QuickTime shuts down
 193 // 3) Decrements the QuickTime Windows Media Layer reference counter -
 194 //    if this reaches 0, QuickTime shuts down the Windows Media Layer
 195 //---------------------------------------------------------------------------
 196 wxQTMediaBackend::~wxQTMediaBackend()
 197 {
 198     if(m_timer)
 199         Cleanup();
 200
 201     //Note that ExitMovies() is not necessary...
 202     ExitMovies();
 203 }
 204
 205 //---------------------------------------------------------------------------
 206 // wxQTMediaBackend::CreateControl
 207 //
 208 // 1) Intializes QuickTime
 209 // 2) Creates the control window
 210 //---------------------------------------------------------------------------
 211 bool wxQTMediaBackend::CreateControl(wxControl* inctrl, wxWindow* parent,
 212                                      wxWindowID wid,
 213                                      const wxPoint& pos,
 214                                      const wxSize& size,
 215                                      long style,
 216                                      const wxValidator& validator,
 217                                      const wxString& name)
 218 {
 219     EnterMovies();
 220
 221     wxMediaCtrl* ctrl = (wxMediaCtrl*) inctrl;
 222
 223     //Create the control base
 224     wxASSERT(ctrl->CreateBase(parent,wid,pos,size,style, validator, name));
 225
 226     //Create the NSMovieView
 227     ctrl->SetNSView(NULL);
 228     NSMovieView* theView = [[NSMovieView alloc] initWithFrame: ctrl->MakeDefaultNSRect(size)];
 229     ctrl->SetNSView(theView);
 230     [theView release];
 231
 232     if (parent)
 233     {
 234         parent->AddChild(ctrl);
 235         parent->CocoaAddChild(ctrl);
 236         ctrl->SetInitialFrameRect(pos,size);
 237     }
 238
 239     [theView showController:false adjustingSize:true];
 240     m_movieview = theView;
 241     m_ctrl = ctrl;
 242     return true;
 243 }
 244
 245 //---------------------------------------------------------------------------
 246 // wxQTMediaBackend::Load (file version)
 247 //
 248 // Calls the URI version
 249 //---------------------------------------------------------------------------
 250 bool wxQTMediaBackend::Load(const wxString& fileName)
 251 {
 252     return Load(
 253                 wxURI(
 254                     wxString( wxT("file://") ) + fileName
 255                      )
 256                );
 257 }
 258
 259 //---------------------------------------------------------------------------
 260 // wxQTMediaBackend::Load (URL Version)
 261 //
 262 // 1) Build an escaped URI from location
 263 // ...
 264 //---------------------------------------------------------------------------
 265 bool wxQTMediaBackend::Load(const wxURI& location)
 266 {
 267     if(m_timer)
 268         Cleanup();
 269
 270     wxString theURI = location.BuildURI();
 271
 272     [m_movieview setMovie:[[NSMovie alloc] initWithURL: [NSURL URLWithString: wxNSStringWithWxString(theURI)]
 273                                byReference: YES ] ];
 274
 275     m_movie = (Movie) [[m_movieview movie] QTMovie];
 276
 277     //preroll movie for streaming
 278     //TODO:Async this using threads?
 279     TimeValue timeNow;
 280     Fixed playRate;
 281     timeNow = GetMovieTime(m_movie, NULL);
 282     playRate = GetMoviePreferredRate(m_movie);
 283     PrePrerollMovie(m_movie, timeNow, playRate, NULL, NULL);
 284     PrerollMovie(m_movie, timeNow, playRate);
 285     SetMovieRate(m_movie, playRate);
 286
 287     FinishLoad();
 288
 289     return ::GetMoviesError() == noErr;
 290 }
 291
 292 //---------------------------------------------------------------------------
 293 // wxQTMediaBackend::FinishLoad
 294 //
 295 // 1) Create the movie timer
 296 // 2) Get real size of movie for GetBestSize/sizers
 297 // 3) See if there is video in the movie, and if so then either
 298 //    SetMovieGWorld if < 10.2 or use Native CreateMovieControl
 299 // 4) Set the movie time scale to something usable so that seeking
 300 //    etc.  will work correctly
 301 // 5) Refresh parent window
 302 //---------------------------------------------------------------------------
 303 void wxQTMediaBackend::FinishLoad()
 304 {
 305     m_timer = new _wxQTTimer(m_movie, (wxQTMediaBackend*) this);
 306     wxASSERT(m_timer);
 307
 308     //get the real size of the movie
 309     Rect outRect;
 310     ::GetMovieNaturalBoundsRect (m_movie, &outRect);
 311     wxASSERT(::GetMoviesError() == noErr);
 312
 313     m_bestSize.x = outRect.right - outRect.left;
 314     m_bestSize.y = outRect.bottom - outRect.top;
 315
 316     //we want millisecond precision
 317     ::SetMovieTimeScale(m_movie, 1000);
 318     wxASSERT(::GetMoviesError() == noErr);
 319
 320     //
 321     //Here, if the parent of the control has a sizer - we
 322     //tell it to recalculate the size of this control since
 323     //the user opened a separate media file
 324     //
 325     m_ctrl->InvalidateBestSize();
 326     m_ctrl->GetParent()->Layout();
 327     m_ctrl->GetParent()->Refresh();
 328     m_ctrl->GetParent()->Update();
 329 }
 330
 331 //---------------------------------------------------------------------------
 332 // wxQTMediaBackend::Play
 333 //
 334 // 1) Start the QT movie
 335 // 2) Start the movie loading timer
 336 //---------------------------------------------------------------------------
 337 bool wxQTMediaBackend::Play()
 338 {
 339     ::StartMovie(m_movie);
 340     m_timer->SetPaused(false);
 341     m_timer->Start(MOVIE_DELAY, wxTIMER_CONTINUOUS);
 342     return ::GetMoviesError() == noErr;
 343 }
 344
 345 //---------------------------------------------------------------------------
 346 // wxQTMediaBackend::Pause
 347 //
 348 // 1) Stop the movie
 349 // 2) Stop the movie timer
 350 //---------------------------------------------------------------------------
 351 bool wxQTMediaBackend::Pause()
 352 {
 353     ::StopMovie(m_movie);
 354     m_timer->SetPaused(true);
 355     m_timer->Stop();
 356     return ::GetMoviesError() == noErr;
 357 }
 358
 359 //---------------------------------------------------------------------------
 360 // wxQTMediaBackend::Stop
 361 //
 362 // 1) Stop the movie
 363 // 2) Stop the movie timer
 364 // 3) Seek to the beginning of the movie
 365 //---------------------------------------------------------------------------
 366 bool wxQTMediaBackend::Stop()
 367 {
 368     m_timer->SetPaused(false);
 369     m_timer->Stop();
 370
 371     ::StopMovie(m_movie);
 372     if(::GetMoviesError() != noErr)
 373         return false;
 374
 375     ::GoToBeginningOfMovie(m_movie);
 376     return ::GetMoviesError() == noErr;
 377 }
 378
 379 //---------------------------------------------------------------------------
 380 // wxQTMediaBackend::GetPlaybackRate
 381 //
 382 // 1) Get the movie playback rate from ::GetMovieRate
 383 //---------------------------------------------------------------------------
 384 double wxQTMediaBackend::GetPlaybackRate()
 385 {
 386     return ( ((double)::GetMovieRate(m_movie)) / 0x10000);
 387 }
 388
 389 //---------------------------------------------------------------------------
 390 // wxQTMediaBackend::SetPlaybackRate
 391 //
 392 // 1) Convert dRate to Fixed and Set the movie rate through SetMovieRate
 393 //---------------------------------------------------------------------------
 394 bool wxQTMediaBackend::SetPlaybackRate(double dRate)
 395 {
 396     ::SetMovieRate(m_movie, (Fixed) (dRate * 0x10000));
 397     return ::GetMoviesError() == noErr;
 398 }
 399
 400 //---------------------------------------------------------------------------
 401 // wxQTMediaBackend::SetPosition
 402 //
 403 // 1) Create a time record struct (TimeRecord) with appropriate values
 404 // 2) Pass struct to SetMovieTime
 405 //---------------------------------------------------------------------------
 406 bool wxQTMediaBackend::SetPosition(wxLongLong where)
 407 {
 408     TimeRecord theTimeRecord;
 409     memset(&theTimeRecord, 0, sizeof(TimeRecord));
 410     theTimeRecord.value.lo = where.GetValue();
 411     theTimeRecord.scale = ::GetMovieTimeScale(m_movie);
 412     theTimeRecord.base = ::GetMovieTimeBase(m_movie);
 413     ::SetMovieTime(m_movie, &theTimeRecord);
 414
 415     if (::GetMoviesError() != noErr)
 416         return false;
 417
 418     return true;
 419 }
 420
 421 //---------------------------------------------------------------------------
 422 // wxQTMediaBackend::GetPosition
 423 //
 424 // Calls GetMovieTime
 425 //---------------------------------------------------------------------------
 426 wxLongLong wxQTMediaBackend::GetPosition()
 427 {
 428     return ::GetMovieTime(m_movie, NULL);
 429 }
 430
 431 //---------------------------------------------------------------------------
 432 // wxQTMediaBackend::GetDuration
 433 //
 434 // Calls GetMovieDuration
 435 //---------------------------------------------------------------------------
 436 wxLongLong wxQTMediaBackend::GetDuration()
 437 {
 438     return ::GetMovieDuration(m_movie);
 439 }
 440
 441 //---------------------------------------------------------------------------
 442 // wxQTMediaBackend::GetState
 443 //
 444 // Determines the current state - the timer keeps track of whether or not
 445 // we are paused or stopped (if the timer is running we are playing)
 446 //---------------------------------------------------------------------------
 447 wxMediaState wxQTMediaBackend::GetState()
 448 {
 449     if ( !m_timer || (m_timer->IsRunning() == false &&
 450                       m_timer->GetPaused() == false) )
 451         return wxMEDIASTATE_STOPPED;
 452
 453     if( m_timer->IsRunning() == true )
 454         return wxMEDIASTATE_PLAYING;
 455     else
 456         return wxMEDIASTATE_PAUSED;
 457 }
 458
 459 //---------------------------------------------------------------------------
 460 // wxQTMediaBackend::Cleanup
 461 //
 462 // Diposes of the movie timer, Control if native, and stops and disposes
 463 // of the QT movie
 464 //---------------------------------------------------------------------------
 465 void wxQTMediaBackend::Cleanup()
 466 {
 467     delete m_timer;
 468     m_timer = NULL;
 469
 470     [[m_movieview movie] release];
 471     [m_movieview setMovie:NULL];
 472 }
 473
 474 //---------------------------------------------------------------------------
 475 // wxQTMediaBackend::GetVideoSize
 476 //
 477 // Returns the actual size of the QT movie
 478 //---------------------------------------------------------------------------
 479 wxSize wxQTMediaBackend::GetVideoSize() const
 480 {
 481     return m_bestSize;
 482 }
 483
 484 //---------------------------------------------------------------------------
 485 // wxQTMediaBackend::Move
 486 //
 487 // Nothin... cocoa takes care of this for us
 488 //---------------------------------------------------------------------------
 489 void wxQTMediaBackend::Move(int x, int y, int w, int h)
 490 {
 491 }
 492
 493
 494 //in source file that contains stuff you don't directly use
 495 #include "wx/html/forcelnk.h"
 496 FORCE_LINK_ME(basewxmediabackends);
 497
 498 #endif //wxUSE_MEDIACTRL