git.sesse.net Git - vlc/blob - projects/mozilla/vlcplugin.cpp

   1 /*****************************************************************************
   2  * vlcplugin.cpp: a VLC plugin for Mozilla
   3  *****************************************************************************
   4  * Copyright (C) 2002-2010 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *          Damien Fouilleul <damienf.fouilleul@laposte.net>
   9  *          Jean-Paul Saman <jpsaman@videolan.org>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  24  *****************************************************************************/
  25
  26 /*****************************************************************************
  27  * Preamble
  28  *****************************************************************************/
  29 #include "config.h"
  30
  31 #ifdef HAVE_MOZILLA_CONFIG_H
  32 #   include <mozilla-config.h>
  33 #endif
  34
  35 #include "vlcplugin.h"
  36 #include "control/npolibvlc.h"
  37
  38 #include <ctype.h>
  39 #if defined(XP_UNIX)
  40 #   include <pthread.h>
  41 #elif defined(XP_WIN)
  42     /* windows headers */
  43 #   include <winbase.h>
  44 #else
  45 #warning "locking not implemented for this platform"
  46 #endif
  47
  48 #include <stdio.h>
  49
  50 /*****************************************************************************
  51  * utilitiy functions
  52  *****************************************************************************/
  53 static void plugin_lock_init(plugin_lock_t *lock)
  54 {
  55     assert(lock);
  56
  57 #if defined(XP_UNIX)
  58     pthread_mutex_init(&lock->mutex, NULL);
  59 #elif defined(XP_WIN)
  60     InitializeCriticalSection(&lock->cs);
  61 #else
  62 #warning "locking not implemented in this platform"
  63 #endif
  64 }
  65
  66 static void plugin_lock_destroy(plugin_lock_t *lock)
  67 {
  68     assert(lock);
  69
  70 #if defined(XP_UNIX)
  71     pthread_mutex_destroy(&lock->mutex);
  72 #elif defined(XP_WIN)
  73     DeleteCriticalSection(&lock->cs);
  74 #else
  75 #warning "locking not implemented in this platform"
  76 #endif
  77 }
  78
  79 static void plugin_lock(plugin_lock_t *lock)
  80 {
  81     assert(lock);
  82
  83 #if defined(XP_UNIX)
  84     pthread_mutex_lock(&lock->mutex);
  85 #elif defined(XP_WIN)
  86     EnterCriticalSection(&lock->cs);
  87 #else
  88 #warning "locking not implemented in this platform"
  89 #endif
  90 }
  91
  92 static void plugin_unlock(plugin_lock_t *lock)
  93 {
  94     assert(lock);
  95
  96 #if defined(XP_UNIX)
  97     pthread_mutex_unlock(&lock->mutex);
  98 #elif defined(XP_WIN)
  99     LeaveCriticalSection(&lock->cs);
 100 #else
 101 #warning "locking not implemented in this platform"
 102 #endif
 103 }
 104
 105 /*****************************************************************************
 106  * VlcPlugin constructor and destructor
 107  *****************************************************************************/
 108 VlcPlugin::VlcPlugin( NPP instance, uint16 mode ) :
 109     i_npmode(mode),
 110     b_stream(0),
 111     b_autoplay(1),
 112     b_toolbar(0),
 113     psz_text(NULL),
 114     psz_target(NULL),
 115     playlist_index(-1),
 116     libvlc_instance(NULL),
 117     libvlc_media_list(NULL),
 118     libvlc_media_player(NULL),
 119     p_scriptClass(NULL),
 120     p_browser(instance),
 121     psz_baseURL(NULL)
 122 #if defined(XP_WIN)
 123     ,pf_wndproc(NULL)
 124 #endif
 125 #if defined(XP_UNIX)
 126     ,i_width((unsigned)-1)
 127     ,i_height((unsigned)-1)
 128     ,i_tb_width(0)
 129     ,i_tb_height(0)
 130     ,i_last_position(0)
 131     ,p_btnPlay(NULL)
 132     ,p_btnPause(NULL)
 133     ,p_btnStop(NULL)
 134     ,p_btnMute(NULL)
 135     ,p_btnUnmute(NULL)
 136     ,p_btnFullscreen(NULL)
 137     ,p_btnTime(NULL)
 138     ,p_timeline(NULL)
 139 #endif
 140 {
 141     memset(&npwindow, 0, sizeof(NPWindow));
 142 #if defined(XP_UNIX)
 143     memset(&npvideo, 0, sizeof(Window));
 144     memset(&npcontrol, 0, sizeof(Window));
 145 #endif
 146 }
 147
 148 static bool boolValue(const char *value) {
 149     return ( !strcmp(value, "1") ||
 150              !strcasecmp(value, "true") ||
 151              !strcasecmp(value, "yes") );
 152 }
 153
 154 bool EventObj::init()
 155 {
 156     plugin_lock_init(&lock);
 157     return true;
 158 }
 159
 160 EventObj::~EventObj()
 161 {
 162     plugin_lock_destroy(&lock);
 163 }
 164
 165 void EventObj::deliver(NPP browser)
 166 {
 167     NPVariant result;
 168     NPVariant params[1];
 169
 170     plugin_lock(&lock);
 171
 172     for( ev_l::iterator i=_elist.begin();i!=_elist.end();++i )
 173     {
 174         libvlc_event_type_t event = *i;
 175         STRINGZ_TO_NPVARIANT(libvlc_event_type_name(event), params[0]);
 176
 177         // Invalid events aren't supposed to be queued up.
 178         // if( !have_event(event) ) continue;
 179
 180         for( lr_l::iterator j=_llist.begin();j!=_llist.end();++j )
 181         {
 182             if (j->get(event))
 183             {
 184                 NPN_InvokeDefault(browser, j->listener(), params, 1, &result);
 185                 NPN_ReleaseVariantValue(&result);
 186             }
 187         }
 188     }
 189     _elist.clear();
 190
 191     plugin_unlock(&lock);
 192 }
 193
 194 void VlcPlugin::eventAsync(void *param)
 195 {
 196     VlcPlugin *plugin = (VlcPlugin*)param;
 197     plugin->events.deliver(plugin->getBrowser());
 198 }
 199
 200 void EventObj::callback(const libvlc_event_t* event)
 201 {
 202     plugin_lock(&lock);
 203
 204     if( have_event(event->type) )
 205         _elist.push_back(event->type);
 206
 207     plugin_unlock(&lock);
 208 }
 209
 210 void VlcPlugin::event_callback(const libvlc_event_t* event, void *param)
 211 {
 212     VlcPlugin *plugin = (VlcPlugin*)param;
 213 #if defined(XP_UNIX)
 214     plugin->events.callback(event);
 215     NPN_PluginThreadAsyncCall(plugin->getBrowser(), eventAsync, plugin);
 216 #else
 217 #warning NPN_PluginThreadAsyncCall not implemented yet.
 218     printf("No NPN_PluginThreadAsyncCall(), doing nothing.");
 219 #endif
 220 }
 221
 222 inline EventObj::event_t EventObj::find_event(const char *s) const
 223 {
 224     event_t i;
 225     for(i=0;i<maxbit();++i)
 226         if(!strcmp(s,libvlc_event_type_name(i)))
 227             break;
 228     return i;
 229 }
 230
 231 bool EventObj::insert(const NPString &s, NPObject *l, bool b)
 232 {
 233     event_t e = find_event(s.utf8characters);
 234     if( e>=maxbit() )
 235         return false;
 236
 237     if( !have_event(e) && !ask_for_event(e) )
 238         return false;
 239
 240     lr_l::iterator i;
 241     for(i=_llist.begin();i!=_llist.end();++i)
 242         if(i->listener()==l && i->bubble()==b)
 243             break;
 244
 245     if( i == _llist.end() ) {
 246         _llist.push_back(Listener(e,l,b));
 247     } else {
 248         if( i->get(e) )
 249             return false;
 250         i->get(e);
 251     }
 252     return true;
 253 }
 254
 255
 256 bool EventObj::remove(const NPString &s, NPObject *l, bool b)
 257 {
 258     event_t e = find_event(s.utf8characters);
 259     if( e>=maxbit() || !get(e) )
 260         return false;
 261
 262     bool any=false;
 263     for(lr_l::iterator i=_llist.begin();i!=_llist.end();)
 264     {
 265         if(i->listener()!=l || i->bubble()!=b)
 266             any|=i->get(e);
 267         else
 268         {
 269             i->reset(e);
 270             if(i->empty())
 271             {
 272                 i=_llist.erase(i);
 273                 continue;
 274             }
 275         }
 276         ++i;
 277     }
 278     if(!any)
 279         unask_for_event(e);
 280
 281     return true;
 282 }
 283
 284
 285 void EventObj::hook_manager(libvlc_event_manager_t *em,
 286                             libvlc_callback_t cb, void *udata)
 287 {
 288     _em = em; _cb = cb; _ud = udata;
 289     if( !_em )
 290         return;
 291     for(size_t i=0;i<maxbit();++i)
 292         if(get(i))
 293             libvlc_event_attach(_em, i, _cb, _ud);
 294 }
 295
 296 void EventObj::unhook_manager()
 297 {
 298     if( !_em )
 299     return;
 300     for(size_t i=0;i<maxbit();++i)
 301         if(get(i))
 302             libvlc_event_detach(_em, i, _cb, _ud);
 303 }
 304
 305
 306 bool EventObj::ask_for_event(event_t e)
 307 {
 308     return _em?0==libvlc_event_attach(_em, e, _cb, _ud):false;
 309 }
 310
 311
 312 void EventObj::unask_for_event(event_t e)
 313 {
 314     if(_em) libvlc_event_detach(_em, e, _cb, _ud);
 315 }
 316
 317
 318 NPError VlcPlugin::init(int argc, char* const argn[], char* const argv[])
 319 {
 320     /* prepare VLC command line */
 321     const char *ppsz_argv[32];
 322     int ppsz_argc = 0;
 323
 324 #ifndef NDEBUG
 325     ppsz_argv[ppsz_argc++] = "--no-plugins-cache";
 326 #endif
 327
 328     /* locate VLC module path */
 329 #ifdef XP_MACOSX
 330     ppsz_argv[ppsz_argc++] = "--plugin-path=/Library/Internet\\ Plug-Ins/VLC\\ Plugin.plugin/Contents/MacOS/modules";
 331     ppsz_argv[ppsz_argc++] = "--vout=minimal_macosx";
 332 #elif defined(XP_WIN)
 333     HKEY h_key;
 334     DWORD i_type, i_data = MAX_PATH + 1;
 335     char p_data[MAX_PATH + 1];
 336     if( RegOpenKeyEx( HKEY_LOCAL_MACHINE, "Software\\VideoLAN\\VLC",
 337                       0, KEY_READ, &h_key ) == ERROR_SUCCESS )
 338     {
 339          if( RegQueryValueEx( h_key, "InstallDir", 0, &i_type,
 340                               (LPBYTE)p_data, &i_data ) == ERROR_SUCCESS )
 341          {
 342              if( i_type == REG_SZ )
 343              {
 344                  strcat( p_data, "\\plugins" );
 345                  ppsz_argv[ppsz_argc++] = "--plugin-path";
 346                  ppsz_argv[ppsz_argc++] = p_data;
 347              }
 348          }
 349          RegCloseKey( h_key );
 350     }
 351     ppsz_argv[ppsz_argc++] = "--no-one-instance";
 352
 353 #endif /* XP_MACOSX */
 354
 355     /* common settings */
 356     ppsz_argv[ppsz_argc++] = "-vv";
 357     ppsz_argv[ppsz_argc++] = "--no-stats";
 358     ppsz_argv[ppsz_argc++] = "--no-media-library";
 359     ppsz_argv[ppsz_argc++] = "--intf=dummy";
 360     ppsz_argv[ppsz_argc++] = "--no-video-title-show";
 361
 362     const char *progid = NULL;
 363
 364     /* parse plugin arguments */
 365     for( int i = 0; (i < argc) && (ppsz_argc < 32); i++ )
 366     {
 367        /* fprintf(stderr, "argn=%s, argv=%s\n", argn[i], argv[i]); */
 368
 369         if( !strcmp( argn[i], "target" )
 370          || !strcmp( argn[i], "mrl")
 371          || !strcmp( argn[i], "filename")
 372          || !strcmp( argn[i], "src") )
 373         {
 374             psz_target = argv[i];
 375         }
 376         else if( !strcmp( argn[i], "text" ) )
 377         {
 378             free( psz_text );
 379             psz_text = strdup( argv[i] );
 380         }
 381         else if( !strcmp( argn[i], "autoplay")
 382               || !strcmp( argn[i], "autostart") )
 383         {
 384             b_autoplay = boolValue(argv[i]);
 385         }
 386         else if( !strcmp( argn[i], "fullscreen" ) )
 387         {
 388             if( boolValue(argv[i]) )
 389             {
 390                 ppsz_argv[ppsz_argc++] = "--fullscreen";
 391             }
 392             else
 393             {
 394                 ppsz_argv[ppsz_argc++] = "--no-fullscreen";
 395             }
 396         }
 397         else if( !strcmp( argn[i], "mute" ) )
 398         {
 399             if( boolValue(argv[i]) )
 400             {
 401                 ppsz_argv[ppsz_argc++] = "--volume=0";
 402             }
 403         }
 404         else if( !strcmp( argn[i], "loop")
 405               || !strcmp( argn[i], "autoloop") )
 406         {
 407             if( boolValue(argv[i]) )
 408             {
 409                 ppsz_argv[ppsz_argc++] = "--loop";
 410             }
 411             else
 412             {
 413                 ppsz_argv[ppsz_argc++] = "--no-loop";
 414             }
 415         }
 416         else if( !strcmp( argn[i], "version")
 417               || !strcmp( argn[i], "progid") )
 418         {
 419             progid = argv[i];
 420         }
 421         else if( !strcmp( argn[i], "toolbar" ) )
 422         {
 423 /* FIXME: Remove this when toolbar functionality has been implemented on
 424  * MacOS X and Win32 for Firefox/Mozilla/Safari. */
 425 #ifdef XP_UNIX
 426             b_toolbar = boolValue(argv[i]);
 427 #endif
 428         }
 429     }
 430
 431     libvlc_instance = libvlc_new(ppsz_argc, ppsz_argv);
 432     if( !libvlc_instance )
 433         return NPERR_GENERIC_ERROR;
 434     libvlc_media_list = libvlc_media_list_new(libvlc_instance);
 435
 436     /*
 437     ** fetch plugin base URL, which is the URL of the page containing the plugin
 438     ** this URL is used for making absolute URL from relative URL that may be
 439     ** passed as an MRL argument
 440     */
 441     NPObject *plugin = NULL;
 442
 443     if( NPERR_NO_ERROR == NPN_GetValue(p_browser, NPNVWindowNPObject, &plugin) )
 444     {
 445         /*
 446         ** is there a better way to get that info ?
 447         */
 448         static const char docLocHref[] = "document.location.href";
 449         NPString script;
 450         NPVariant result;
 451
 452         script.UTF8Characters = docLocHref;
 453         script.UTF8Length = sizeof(docLocHref)-1;
 454
 455         if( NPN_Evaluate(p_browser, plugin, &script, &result) )
 456         {
 457             if( NPVARIANT_IS_STRING(result) )
 458             {
 459                 NPString &location = NPVARIANT_TO_STRING(result);
 460
 461                 psz_baseURL = (char *) malloc(location.UTF8Length+1);
 462                 if( psz_baseURL )
 463                 {
 464                     strncpy(psz_baseURL, location.UTF8Characters, location.UTF8Length);
 465                     psz_baseURL[location.UTF8Length] = '\0';
 466                 }
 467             }
 468             NPN_ReleaseVariantValue(&result);
 469         }
 470         NPN_ReleaseObject(plugin);
 471     }
 472
 473     if( psz_target )
 474     {
 475         // get absolute URL from src
 476         char *psz_absurl = getAbsoluteURL(psz_target);
 477         psz_target = psz_absurl ? psz_absurl : strdup(psz_target);
 478     }
 479
 480     /* assign plugin script root class */
 481     /* new APIs */
 482     p_scriptClass = RuntimeNPClass<LibvlcRootNPObject>::getClass();
 483
 484     if( !events.init() )
 485         return NPERR_GENERIC_ERROR;
 486
 487     return NPERR_NO_ERROR;
 488 }
 489
 490 VlcPlugin::~VlcPlugin()
 491 {
 492     free(psz_baseURL);
 493     free(psz_target);
 494     free(psz_text);
 495
 496     if( libvlc_media_player )
 497     {
 498         if( playlist_isplaying() )
 499             playlist_stop();
 500         events.unhook_manager();
 501         libvlc_media_player_release( libvlc_media_player );
 502     }
 503     if( libvlc_media_list )
 504         libvlc_media_list_release( libvlc_media_list );
 505     if( libvlc_instance )
 506         libvlc_release(libvlc_instance);
 507 }
 508
 509 /*****************************************************************************
 510  * VlcPlugin playlist replacement methods
 511  *****************************************************************************/
 512 void VlcPlugin::set_player_window()
 513 {
 514 #ifdef XP_UNIX
 515     libvlc_media_player_set_xwindow(libvlc_media_player,
 516                                     (uint32_t)getVideoWindow());
 517 #endif
 518 #ifdef XP_MACOSX
 519     // XXX FIXME insert appropriate call here
 520 #endif
 521 #ifdef XP_WIN
 522     libvlc_media_player_set_hwnd(libvlc_media_player,
 523                                  getWindow().window);
 524 #endif
 525 }
 526
 527 int VlcPlugin::playlist_add( const char *mrl )
 528 {
 529     int item = -1;
 530     libvlc_media_t *p_m = libvlc_media_new_location(libvlc_instance,mrl);
 531     if( !p_m )
 532         return -1;
 533     assert( libvlc_media_list );
 534     libvlc_media_list_lock(libvlc_media_list);
 535     if( !libvlc_media_list_add_media(libvlc_media_list,p_m) )
 536         item = libvlc_media_list_count(libvlc_media_list)-1;
 537     libvlc_media_list_unlock(libvlc_media_list);
 538
 539     libvlc_media_release(p_m);
 540
 541     return item;
 542 }
 543
 544 int VlcPlugin::playlist_add_extended_untrusted( const char *mrl, const char *name,
 545                     int optc, const char **optv )
 546 {
 547     libvlc_media_t *p_m;
 548     int item = -1;
 549
 550     assert( libvlc_media_list );
 551
 552     p_m = libvlc_media_new_location(libvlc_instance, mrl);
 553     if( !p_m )
 554         return -1;
 555
 556     for( int i = 0; i < optc; ++i )
 557         libvlc_media_add_option_flag(p_m, optv[i], libvlc_media_option_unique);
 558
 559     libvlc_media_list_lock(libvlc_media_list);
 560     if( !libvlc_media_list_add_media(libvlc_media_list,p_m) )
 561         item = libvlc_media_list_count(libvlc_media_list)-1;
 562     libvlc_media_list_unlock(libvlc_media_list);
 563     libvlc_media_release(p_m);
 564
 565     return item;
 566 }
 567
 568 bool VlcPlugin::playlist_select( int idx )
 569 {
 570     libvlc_media_t *p_m = NULL;
 571
 572     assert( libvlc_media_list );
 573
 574     libvlc_media_list_lock(libvlc_media_list);
 575
 576     int count = libvlc_media_list_count(libvlc_media_list);
 577     if( idx<0||idx>=count )
 578         goto bad_unlock;
 579
 580     playlist_index = idx;
 581
 582     p_m = libvlc_media_list_item_at_index(libvlc_media_list,playlist_index);
 583     libvlc_media_list_unlock(libvlc_media_list);
 584
 585     if( !p_m )
 586         return false;
 587
 588     if( libvlc_media_player )
 589     {
 590         if( playlist_isplaying() )
 591             playlist_stop();
 592         events.unhook_manager();
 593         libvlc_media_player_release( libvlc_media_player );
 594         libvlc_media_player = NULL;
 595     }
 596
 597     libvlc_media_player = libvlc_media_player_new_from_media(p_m);
 598     if( libvlc_media_player )
 599     {
 600         set_player_window();
 601         events.hook_manager(
 602                       libvlc_media_player_event_manager(libvlc_media_player),
 603                       event_callback, this);
 604     }
 605
 606     libvlc_media_release( p_m );
 607     return true;
 608
 609 bad_unlock:
 610     libvlc_media_list_unlock(libvlc_media_list);
 611     return false;
 612 }
 613
 614 int VlcPlugin::playlist_delete_item( int idx )
 615 {
 616     if( !libvlc_media_list )
 617         return -1;
 618     libvlc_media_list_lock(libvlc_media_list);
 619     int ret = libvlc_media_list_remove_index(libvlc_media_list,idx);
 620     libvlc_media_list_unlock(libvlc_media_list);
 621     return ret;
 622 }
 623
 624 void VlcPlugin::playlist_clear()
 625 {
 626     if( libvlc_media_list )
 627         libvlc_media_list_release(libvlc_media_list);
 628     libvlc_media_list = libvlc_media_list_new(getVLC());
 629 }
 630
 631 int VlcPlugin::playlist_count()
 632 {
 633     int items_count = 0;
 634     if( !libvlc_media_list )
 635         return items_count;
 636     libvlc_media_list_lock(libvlc_media_list);
 637     items_count = libvlc_media_list_count(libvlc_media_list);
 638     libvlc_media_list_unlock(libvlc_media_list);
 639     return items_count;
 640 }
 641
 642 void VlcPlugin::toggle_fullscreen()
 643 {
 644     if( playlist_isplaying() )
 645         libvlc_toggle_fullscreen(libvlc_media_player);
 646 }
 647
 648 void VlcPlugin::set_fullscreen( int yes )
 649 {
 650     if( playlist_isplaying() )
 651         libvlc_set_fullscreen(libvlc_media_player,yes);
 652 }
 653
 654 int  VlcPlugin::get_fullscreen()
 655 {
 656     int r = 0;
 657     if( playlist_isplaying() )
 658         r = libvlc_get_fullscreen(libvlc_media_player);
 659     return r;
 660 }
 661
 662 bool  VlcPlugin::player_has_vout()
 663 {
 664     bool r = false;
 665     if( playlist_isplaying() )
 666         r = libvlc_media_player_has_vout(libvlc_media_player);
 667     return r;
 668 }
 669
 670 /*****************************************************************************
 671  * VlcPlugin methods
 672  *****************************************************************************/
 673
 674 char *VlcPlugin::getAbsoluteURL(const char *url)
 675 {
 676     if( NULL != url )
 677     {
 678         // check whether URL is already absolute
 679         const char *end=strchr(url, ':');
 680         if( (NULL != end) && (end != url) )
 681         {
 682             // validate protocol header
 683             const char *start = url;
 684             char c = *start;
 685             if( isalpha(c) )
 686             {
 687                 ++start;
 688                 while( start != end )
 689                 {
 690                     c  = *start;
 691                     if( ! (isalnum(c)
 692                        || ('-' == c)
 693                        || ('+' == c)
 694                        || ('.' == c)
 695                        || ('/' == c)) ) /* VLC uses / to allow user to specify a demuxer */
 696                         // not valid protocol header, assume relative URL
 697                         goto relativeurl;
 698                     ++start;
 699                 }
 700                 /* we have a protocol header, therefore URL is absolute */
 701                 return strdup(url);
 702             }
 703             // not a valid protocol header, assume relative URL
 704         }
 705
 706 relativeurl:
 707
 708         if( psz_baseURL )
 709         {
 710             size_t baseLen = strlen(psz_baseURL);
 711             char *href = (char *) malloc(baseLen+strlen(url)+1);
 712             if( href )
 713             {
 714                 /* prepend base URL */
 715                 memcpy(href, psz_baseURL, baseLen+1);
 716
 717                 /*
 718                 ** relative url could be empty,
 719                 ** in which case return base URL
 720                 */
 721                 if( '\0' == *url )
 722                     return href;
 723
 724                 /*
 725                 ** locate pathname part of base URL
 726                 */
 727
 728                 /* skip over protocol part  */
 729                 char *pathstart = strchr(href, ':');
 730                 char *pathend = href+baseLen;
 731                 if( pathstart )
 732                 {
 733                     if( '/' == *(++pathstart) )
 734                     {
 735                         if( '/' == *(++pathstart) )
 736                         {
 737                             ++pathstart;
 738                         }
 739                     }
 740                     /* skip over host part */
 741                     pathstart = strchr(pathstart, '/');
 742                     if( ! pathstart )
 743                     {
 744                         // no path, add a / past end of url (over '\0')
 745                         pathstart = pathend;
 746                         *pathstart = '/';
 747                     }
 748                 }
 749                 else
 750                 {
 751                     /* baseURL is just a UNIX path */
 752                     if( '/' != *href )
 753                     {
 754                         /* baseURL is not an absolute path */
 755                         free(href);
 756                         return NULL;
 757                     }
 758                     pathstart = href;
 759                 }
 760
 761                 /* relative URL made of an absolute path ? */
 762                 if( '/' == *url )
 763                 {
 764                     /* replace path completely */
 765                     strcpy(pathstart, url);
 766                     return href;
 767                 }
 768
 769                 /* find last path component and replace it */
 770                 while( '/' != *pathend)
 771                     --pathend;
 772
 773                 /*
 774                 ** if relative url path starts with one or more '../',
 775                 ** factor them out of href so that we return a
 776                 ** normalized URL
 777                 */
 778                 while( pathend != pathstart )
 779                 {
 780                     const char *p = url;
 781                     if( '.' != *p )
 782                         break;
 783                     ++p;
 784                     if( '\0' == *p  )
 785                     {
 786                         /* relative url is just '.' */
 787                         url = p;
 788                         break;
 789                     }
 790                     if( '/' == *p  )
 791                     {
 792                         /* relative url starts with './' */
 793                         url = ++p;
 794                         continue;
 795                     }
 796                     if( '.' != *p )
 797                         break;
 798                     ++p;
 799                     if( '\0' == *p )
 800                     {
 801                         /* relative url is '..' */
 802                     }
 803                     else
 804                     {
 805                         if( '/' != *p )
 806                             break;
 807                         /* relative url starts with '../' */
 808                         ++p;
 809                     }
 810                     url = p;
 811                     do
 812                     {
 813                         --pathend;
 814                     }
 815                     while( '/' != *pathend );
 816                 }
 817                 /* skip over '/' separator */
 818                 ++pathend;
 819                 /* concatenate remaining base URL and relative URL */
 820                 strcpy(pathend, url);
 821             }
 822             return href;
 823         }
 824     }
 825     return NULL;
 826 }
 827
 828 #if defined(XP_UNIX)
 829 int  VlcPlugin::setSize(unsigned width, unsigned height)
 830 {
 831     int diff = (width != i_width) || (height != i_height);
 832
 833     i_width = width;
 834     i_height = height;
 835
 836     /* return size */
 837     return diff;
 838 }
 839
 840 #define BTN_SPACE ((unsigned int)4)
 841 void VlcPlugin::showToolbar()
 842 {
 843     const NPWindow& window = getWindow();
 844     Window control = getControlWindow();
 845     Window video = getVideoWindow();
 846     Display *p_display = ((NPSetWindowCallbackStruct *)window.ws_info)->display;
 847     unsigned int i_height = 0, i_width = BTN_SPACE;
 848
 849     /* load icons */
 850     if( !p_btnPlay )
 851         XpmReadFileToImage( p_display, DATA_PATH "/mozilla/play.xpm",
 852                             &p_btnPlay, NULL, NULL);
 853     if( p_btnPlay )
 854     {
 855         i_height = __MAX( i_height, p_btnPlay->height );
 856     }
 857     if( !p_btnPause )
 858         XpmReadFileToImage( p_display, DATA_PATH "/mozilla/pause.xpm",
 859                             &p_btnPause, NULL, NULL);
 860     if( p_btnPause )
 861     {
 862         i_height = __MAX( i_height, p_btnPause->height );
 863     }
 864     i_width += __MAX( p_btnPause->width, p_btnPlay->width );
 865
 866     if( !p_btnStop )
 867         XpmReadFileToImage( p_display, DATA_PATH "/mozilla/stop.xpm",
 868                             &p_btnStop, NULL, NULL );
 869     if( p_btnStop )
 870     {
 871         i_height = __MAX( i_height, p_btnStop->height );
 872         i_width += BTN_SPACE + p_btnStop->width;
 873     }
 874     if( !p_timeline )
 875         XpmReadFileToImage( p_display, DATA_PATH "/mozilla/time_line.xpm",
 876                             &p_timeline, NULL, NULL);
 877     if( p_timeline )
 878     {
 879         i_height = __MAX( i_height, p_timeline->height );
 880         i_width += BTN_SPACE + p_timeline->width;
 881     }
 882     if( !p_btnTime )
 883         XpmReadFileToImage( p_display, DATA_PATH "/mozilla/time_icon.xpm",
 884                             &p_btnTime, NULL, NULL);
 885     if( p_btnTime )
 886     {
 887         i_height = __MAX( i_height, p_btnTime->height );
 888         i_width += BTN_SPACE + p_btnTime->width;
 889     }
 890     if( !p_btnFullscreen )
 891         XpmReadFileToImage( p_display, DATA_PATH "/mozilla/fullscreen.xpm",
 892                             &p_btnFullscreen, NULL, NULL);
 893     if( p_btnFullscreen )
 894     {
 895         i_height = __MAX( i_height, p_btnFullscreen->height );
 896         i_width += BTN_SPACE + p_btnFullscreen->width;
 897     }
 898     if( !p_btnMute )
 899         XpmReadFileToImage( p_display, DATA_PATH "/mozilla/volume_max.xpm",
 900                             &p_btnMute, NULL, NULL);
 901     if( p_btnMute )
 902     {
 903         i_height = __MAX( i_height, p_btnMute->height );
 904     }
 905     if( !p_btnUnmute )
 906         XpmReadFileToImage( p_display, DATA_PATH "/mozilla/volume_mute.xpm",
 907                             &p_btnUnmute, NULL, NULL);
 908     if( p_btnUnmute )
 909     {
 910         i_height = __MAX( i_height, p_btnUnmute->height );
 911     }
 912     i_width += BTN_SPACE + __MAX( p_btnUnmute->width, p_btnMute->width );
 913
 914     setToolbarSize( i_width, i_height );
 915
 916     if( !p_btnPlay || !p_btnPause || !p_btnStop || !p_timeline ||
 917         !p_btnTime || !p_btnFullscreen || !p_btnMute || !p_btnUnmute )
 918         fprintf(stderr, "Error: some button images not found in %s\n", DATA_PATH );
 919
 920     /* reset panels position and size */
 921     /* XXX  use i_width */
 922     XResizeWindow( p_display, video, window.width, window.height - i_height);
 923     XMoveWindow( p_display, control, 0, window.height - i_height );
 924     XResizeWindow( p_display, control, window.width, i_height -1);
 925
 926     b_toolbar = 1; /* says toolbar is now shown */
 927     redrawToolbar();
 928 }
 929
 930 void VlcPlugin::hideToolbar()
 931 {
 932     const NPWindow& window = getWindow();
 933     Display *p_display = ((NPSetWindowCallbackStruct *)window.ws_info)->display;
 934     Window control = getControlWindow();
 935     Window video = getVideoWindow();
 936
 937     i_tb_width = i_tb_height = 0;
 938
 939     if( p_btnPlay )  XDestroyImage( p_btnPlay );
 940     if( p_btnPause ) XDestroyImage( p_btnPause );
 941     if( p_btnStop )  XDestroyImage( p_btnStop );
 942     if( p_timeline ) XDestroyImage( p_timeline );
 943     if( p_btnTime )  XDestroyImage( p_btnTime );
 944     if( p_btnFullscreen ) XDestroyImage( p_btnFullscreen );
 945     if( p_btnMute )  XDestroyImage( p_btnMute );
 946     if( p_btnUnmute ) XDestroyImage( p_btnUnmute );
 947
 948     p_btnPlay = NULL;
 949     p_btnPause = NULL;
 950     p_btnStop = NULL;
 951     p_timeline = NULL;
 952     p_btnTime = NULL;
 953     p_btnFullscreen = NULL;
 954     p_btnMute = NULL;
 955     p_btnUnmute = NULL;
 956
 957     /* reset panels position and size */
 958     /* XXX  use i_width */
 959     XResizeWindow( p_display, video, window.width, window.height );
 960     XMoveWindow( p_display, control, 0, window.height-1 );
 961     XResizeWindow( p_display, control, window.width, 1 );
 962
 963     b_toolbar = 0; /* says toolbar is now hidden */
 964     redrawToolbar();
 965 }
 966
 967 void VlcPlugin::redrawToolbar()
 968 {
 969     int is_playing = 0;
 970     bool b_mute = false;
 971     unsigned int dst_x, dst_y;
 972     GC gc;
 973     XGCValues gcv;
 974     unsigned int i_tb_width, i_tb_height;
 975
 976     /* This method does nothing if toolbar is hidden. */
 977     if( !b_toolbar || !libvlc_media_player )
 978         return;
 979
 980     const NPWindow& window = getWindow();
 981     Window control = getControlWindow();
 982     Display *p_display = ((NPSetWindowCallbackStruct *)window.ws_info)->display;
 983
 984     getToolbarSize( &i_tb_width, &i_tb_height );
 985
 986     /* get mute info */
 987     b_mute = libvlc_audio_get_mute( libvlc_media_player );
 988
 989     gcv.foreground = BlackPixel( p_display, 0 );
 990     gc = XCreateGC( p_display, control, GCForeground, &gcv );
 991
 992     XFillRectangle( p_display, control, gc,
 993                     0, 0, window.width, i_tb_height );
 994     gcv.foreground = WhitePixel( p_display, 0 );
 995     XChangeGC( p_display, gc, GCForeground, &gcv );
 996
 997     /* position icons */
 998     dst_x = BTN_SPACE;
 999     dst_y = i_tb_height >> 1; /* baseline = vertical middle */
1000
1001     if( p_btnPause && (is_playing == 1) )
1002     {
1003         XPutImage( p_display, control, gc, p_btnPause, 0, 0, dst_x,
1004                    dst_y - (p_btnPause->height >> 1),
1005                    p_btnPause->width, p_btnPause->height );
1006         dst_x += BTN_SPACE + p_btnPause->width;
1007     }
1008     else if( p_btnPlay )
1009     {
1010         XPutImage( p_display, control, gc, p_btnPlay, 0, 0, dst_x,
1011                    dst_y - (p_btnPlay->height >> 1),
1012                    p_btnPlay->width, p_btnPlay->height );
1013         dst_x += BTN_SPACE + p_btnPlay->width;
1014     }
1015
1016     if( p_btnStop )
1017         XPutImage( p_display, control, gc, p_btnStop, 0, 0, dst_x,
1018                    dst_y - (p_btnStop->height >> 1),
1019                    p_btnStop->width, p_btnStop->height );
1020
1021     dst_x += BTN_SPACE + ( p_btnStop ? p_btnStop->width : 0 );
1022
1023     if( p_btnFullscreen )
1024         XPutImage( p_display, control, gc, p_btnFullscreen, 0, 0, dst_x,
1025                    dst_y - (p_btnFullscreen->height >> 1),
1026                    p_btnFullscreen->width, p_btnFullscreen->height );
1027
1028     dst_x += BTN_SPACE + ( p_btnFullscreen ? p_btnFullscreen->width : 0 );
1029
1030     if( p_btnUnmute && b_mute )
1031     {
1032         XPutImage( p_display, control, gc, p_btnUnmute, 0, 0, dst_x,
1033                    dst_y - (p_btnUnmute->height >> 1),
1034                    p_btnUnmute->width, p_btnUnmute->height );
1035
1036         dst_x += BTN_SPACE + ( p_btnUnmute ? p_btnUnmute->width : 0 );
1037     }
1038     else if( p_btnMute )
1039     {
1040         XPutImage( p_display, control, gc, p_btnMute, 0, 0, dst_x,
1041                    dst_y - (p_btnMute->height >> 1),
1042                    p_btnMute->width, p_btnMute->height );
1043
1044         dst_x += BTN_SPACE + ( p_btnMute ? p_btnMute->width : 0 );
1045     }
1046
1047     if( p_timeline )
1048         XPutImage( p_display, control, gc, p_timeline, 0, 0, dst_x,
1049                    dst_y - (p_timeline->height >> 1),
1050                    (window.width-(dst_x+BTN_SPACE)), p_timeline->height );
1051
1052     /* get movie position in % */
1053     if( playlist_isplaying() )
1054     {
1055         i_last_position = (int)((window.width-(dst_x+BTN_SPACE))*
1056                    libvlc_media_player_get_position(libvlc_media_player));
1057     }
1058
1059     if( p_btnTime )
1060         XPutImage( p_display, control, gc, p_btnTime,
1061                    0, 0, (dst_x+i_last_position),
1062                    dst_y - (p_btnTime->height >> 1),
1063                    p_btnTime->width, p_btnTime->height );
1064
1065     XFreeGC( p_display, gc );
1066 }
1067
1068 vlc_toolbar_clicked_t VlcPlugin::getToolbarButtonClicked( int i_xpos, int i_ypos )
1069 {
1070     unsigned int i_dest = BTN_SPACE;
1071     int is_playing = 0;
1072     bool b_mute = false;
1073
1074 #ifndef NDEBUG
1075     fprintf( stderr, "ToolbarButtonClicked:: "
1076                      "trying to match (%d,%d) (%d,%d)\n",
1077              i_xpos, i_ypos, i_tb_height, i_tb_width );
1078 #endif
1079     if( i_ypos >= i_tb_width )
1080         return clicked_Unknown;
1081
1082     /* Note: the order of testing is dependend on the original
1083      * drawing positions of the icon buttons. Buttons are tested
1084      * left to right.
1085      */
1086
1087     /* get isplaying */
1088     is_playing = playlist_isplaying();
1089
1090     /* get mute info */
1091     if( libvlc_media_player )
1092         b_mute = libvlc_audio_get_mute( libvlc_media_player );
1093
1094     /* is Pause of Play button clicked */
1095     if( (is_playing != 1) &&
1096         (i_xpos >= (BTN_SPACE>>1)) &&
1097         (i_xpos <= i_dest + p_btnPlay->width + (BTN_SPACE>>1)) )
1098         return clicked_Play;
1099     else if( (i_xpos >= (BTN_SPACE>>1))  &&
1100              (i_xpos <= i_dest + p_btnPause->width) )
1101         return clicked_Pause;
1102
1103     /* is Stop button clicked */
1104     if( is_playing != 1 )
1105         i_dest += (p_btnPlay->width + (BTN_SPACE>>1));
1106     else
1107         i_dest += (p_btnPause->width + (BTN_SPACE>>1));
1108
1109     if( (i_xpos >= i_dest) &&
1110         (i_xpos <= i_dest + p_btnStop->width + (BTN_SPACE>>1)) )
1111         return clicked_Stop;
1112
1113     /* is Fullscreen button clicked */
1114     i_dest += (p_btnStop->width + (BTN_SPACE>>1));
1115     if( (i_xpos >= i_dest) &&
1116         (i_xpos <= i_dest + p_btnFullscreen->width + (BTN_SPACE>>1)) )
1117         return clicked_Fullscreen;
1118
1119     /* is Mute or Unmute button clicked */
1120     i_dest += (p_btnFullscreen->width + (BTN_SPACE>>1));
1121     if( !b_mute && (i_xpos >= i_dest) &&
1122         (i_xpos <= i_dest + p_btnMute->width + (BTN_SPACE>>1)) )
1123         return clicked_Mute;
1124     else if( (i_xpos >= i_dest) &&
1125              (i_xpos <= i_dest + p_btnUnmute->width + (BTN_SPACE>>1)) )
1126         return clicked_Unmute;
1127
1128     /* is timeline clicked */
1129     if( !b_mute )
1130         i_dest += (p_btnMute->width + (BTN_SPACE>>1));
1131     else
1132         i_dest += (p_btnUnmute->width + (BTN_SPACE>>1));
1133     if( (i_xpos >= i_dest) &&
1134         (i_xpos <= i_dest + p_timeline->width + (BTN_SPACE>>1)) )
1135         return clicked_timeline;
1136
1137     /* is time button clicked */
1138     i_dest += (p_timeline->width + (BTN_SPACE>>1));
1139     if( (i_xpos >= i_dest) &&
1140         (i_xpos <= i_dest + p_btnTime->width + (BTN_SPACE>>1)) )
1141         return clicked_Time;
1142
1143     return clicked_Unknown;
1144 }
1145 #undef BTN_SPACE
1146 #endif
1147
1148 // Verifies the version of the NPAPI.
1149 // The eventListeners use a NPAPI function available
1150 // since Gecko 1.9.
1151 bool VlcPlugin::canUseEventListener()
1152 {
1153     int plugin_major, plugin_minor;
1154     int browser_major, browser_minor;
1155
1156     NPN_Version(&plugin_major, &plugin_minor,
1157                 &browser_major, &browser_minor);
1158
1159     if (browser_minor >= 19 || browser_major > 0)
1160         return true;
1161     return false;
1162 }