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         events.unhook_manager();
 499         libvlc_media_player_release( libvlc_media_player );
 500     }
 501     if( libvlc_media_list )
 502         libvlc_media_list_release( libvlc_media_list );
 503     if( libvlc_instance )
 504         libvlc_release(libvlc_instance);
 505 }
 506
 507 /*****************************************************************************
 508  * VlcPlugin playlist replacement methods
 509  *****************************************************************************/
 510 void VlcPlugin::set_player_window()
 511 {
 512 #ifdef XP_UNIX
 513     libvlc_media_player_set_xwindow(libvlc_media_player,
 514                                     (uint32_t)getVideoWindow());
 515 #endif
 516 #ifdef XP_MACOSX
 517     // XXX FIXME insert appropriate call here
 518 #endif
 519 #ifdef XP_WIN
 520     libvlc_media_player_set_hwnd(libvlc_media_player,
 521                                  getWindow().window);
 522 #endif
 523 }
 524
 525 int VlcPlugin::playlist_add( const char *mrl )
 526 {
 527     int item = -1;
 528     libvlc_media_t *p_m = libvlc_media_new_location(libvlc_instance,mrl);
 529     if( !p_m )
 530         return -1;
 531     assert( libvlc_media_list );
 532     libvlc_media_list_lock(libvlc_media_list);
 533     if( !libvlc_media_list_add_media(libvlc_media_list,p_m) )
 534         item = libvlc_media_list_count(libvlc_media_list)-1;
 535     libvlc_media_list_unlock(libvlc_media_list);
 536
 537     libvlc_media_release(p_m);
 538
 539     return item;
 540 }
 541
 542 int VlcPlugin::playlist_add_extended_untrusted( const char *mrl, const char *name,
 543                     int optc, const char **optv )
 544 {
 545     libvlc_media_t *p_m;
 546     int item = -1;
 547
 548     assert( libvlc_media_list );
 549
 550     p_m = libvlc_media_new_location(libvlc_instance, mrl);
 551     if( !p_m )
 552         return -1;
 553
 554     for( int i = 0; i < optc; ++i )
 555         libvlc_media_add_option_flag(p_m, optv[i], libvlc_media_option_unique);
 556
 557     libvlc_media_list_lock(libvlc_media_list);
 558     if( !libvlc_media_list_add_media(libvlc_media_list,p_m) )
 559         item = libvlc_media_list_count(libvlc_media_list)-1;
 560     libvlc_media_list_unlock(libvlc_media_list);
 561     libvlc_media_release(p_m);
 562
 563     return item;
 564 }
 565
 566 bool VlcPlugin::playlist_select( int idx )
 567 {
 568     libvlc_media_t *p_m = NULL;
 569
 570     assert( libvlc_media_list );
 571
 572     libvlc_media_list_lock(libvlc_media_list);
 573
 574     int count = libvlc_media_list_count(libvlc_media_list);
 575     if( idx<0||idx>=count )
 576         goto bad_unlock;
 577
 578     playlist_index = idx;
 579
 580     p_m = libvlc_media_list_item_at_index(libvlc_media_list,playlist_index);
 581     libvlc_media_list_unlock(libvlc_media_list);
 582
 583     if( !p_m )
 584         return false;
 585
 586     if( libvlc_media_player )
 587     {
 588         if( playlist_isplaying() )
 589             playlist_stop();
 590         events.unhook_manager();
 591         libvlc_media_player_release( libvlc_media_player );
 592         libvlc_media_player = NULL;
 593     }
 594
 595     libvlc_media_player = libvlc_media_player_new_from_media(p_m);
 596     if( libvlc_media_player )
 597     {
 598         set_player_window();
 599         events.hook_manager(
 600                       libvlc_media_player_event_manager(libvlc_media_player),
 601                       event_callback, this);
 602     }
 603
 604     libvlc_media_release( p_m );
 605     return true;
 606
 607 bad_unlock:
 608     libvlc_media_list_unlock(libvlc_media_list);
 609     return false;
 610 }
 611
 612 int VlcPlugin::playlist_delete_item( int idx )
 613 {
 614     if( !libvlc_media_list )
 615         return -1;
 616     libvlc_media_list_lock(libvlc_media_list);
 617     int ret = libvlc_media_list_remove_index(libvlc_media_list,idx);
 618     libvlc_media_list_unlock(libvlc_media_list);
 619     return ret;
 620 }
 621
 622 void VlcPlugin::playlist_clear()
 623 {
 624     if( libvlc_media_list )
 625         libvlc_media_list_release(libvlc_media_list);
 626     libvlc_media_list = libvlc_media_list_new(getVLC());
 627 }
 628
 629 int VlcPlugin::playlist_count()
 630 {
 631     int items_count = 0;
 632     if( !libvlc_media_list )
 633         return items_count;
 634     libvlc_media_list_lock(libvlc_media_list);
 635     items_count = libvlc_media_list_count(libvlc_media_list);
 636     libvlc_media_list_unlock(libvlc_media_list);
 637     return items_count;
 638 }
 639
 640 void VlcPlugin::toggle_fullscreen()
 641 {
 642     if( playlist_isplaying() )
 643         libvlc_toggle_fullscreen(libvlc_media_player);
 644 }
 645
 646 void VlcPlugin::set_fullscreen( int yes )
 647 {
 648     if( playlist_isplaying() )
 649         libvlc_set_fullscreen(libvlc_media_player,yes);
 650 }
 651
 652 int  VlcPlugin::get_fullscreen()
 653 {
 654     int r = 0;
 655     if( playlist_isplaying() )
 656         r = libvlc_get_fullscreen(libvlc_media_player);
 657     return r;
 658 }
 659
 660 bool  VlcPlugin::player_has_vout()
 661 {
 662     bool r = false;
 663     if( playlist_isplaying() )
 664         r = libvlc_media_player_has_vout(libvlc_media_player);
 665     return r;
 666 }
 667
 668 /*****************************************************************************
 669  * VlcPlugin methods
 670  *****************************************************************************/
 671
 672 char *VlcPlugin::getAbsoluteURL(const char *url)
 673 {
 674     if( NULL != url )
 675     {
 676         // check whether URL is already absolute
 677         const char *end=strchr(url, ':');
 678         if( (NULL != end) && (end != url) )
 679         {
 680             // validate protocol header
 681             const char *start = url;
 682             char c = *start;
 683             if( isalpha(c) )
 684             {
 685                 ++start;
 686                 while( start != end )
 687                 {
 688                     c  = *start;
 689                     if( ! (isalnum(c)
 690                        || ('-' == c)
 691                        || ('+' == c)
 692                        || ('.' == c)
 693                        || ('/' == c)) ) /* VLC uses / to allow user to specify a demuxer */
 694                         // not valid protocol header, assume relative URL
 695                         goto relativeurl;
 696                     ++start;
 697                 }
 698                 /* we have a protocol header, therefore URL is absolute */
 699                 return strdup(url);
 700             }
 701             // not a valid protocol header, assume relative URL
 702         }
 703
 704 relativeurl:
 705
 706         if( psz_baseURL )
 707         {
 708             size_t baseLen = strlen(psz_baseURL);
 709             char *href = (char *) malloc(baseLen+strlen(url)+1);
 710             if( href )
 711             {
 712                 /* prepend base URL */
 713                 memcpy(href, psz_baseURL, baseLen+1);
 714
 715                 /*
 716                 ** relative url could be empty,
 717                 ** in which case return base URL
 718                 */
 719                 if( '\0' == *url )
 720                     return href;
 721
 722                 /*
 723                 ** locate pathname part of base URL
 724                 */
 725
 726                 /* skip over protocol part  */
 727                 char *pathstart = strchr(href, ':');
 728                 char *pathend = href+baseLen;
 729                 if( pathstart )
 730                 {
 731                     if( '/' == *(++pathstart) )
 732                     {
 733                         if( '/' == *(++pathstart) )
 734                         {
 735                             ++pathstart;
 736                         }
 737                     }
 738                     /* skip over host part */
 739                     pathstart = strchr(pathstart, '/');
 740                     if( ! pathstart )
 741                     {
 742                         // no path, add a / past end of url (over '\0')
 743                         pathstart = pathend;
 744                         *pathstart = '/';
 745                     }
 746                 }
 747                 else
 748                 {
 749                     /* baseURL is just a UNIX path */
 750                     if( '/' != *href )
 751                     {
 752                         /* baseURL is not an absolute path */
 753                         free(href);
 754                         return NULL;
 755                     }
 756                     pathstart = href;
 757                 }
 758
 759                 /* relative URL made of an absolute path ? */
 760                 if( '/' == *url )
 761                 {
 762                     /* replace path completely */
 763                     strcpy(pathstart, url);
 764                     return href;
 765                 }
 766
 767                 /* find last path component and replace it */
 768                 while( '/' != *pathend)
 769                     --pathend;
 770
 771                 /*
 772                 ** if relative url path starts with one or more '../',
 773                 ** factor them out of href so that we return a
 774                 ** normalized URL
 775                 */
 776                 while( pathend != pathstart )
 777                 {
 778                     const char *p = url;
 779                     if( '.' != *p )
 780                         break;
 781                     ++p;
 782                     if( '\0' == *p  )
 783                     {
 784                         /* relative url is just '.' */
 785                         url = p;
 786                         break;
 787                     }
 788                     if( '/' == *p  )
 789                     {
 790                         /* relative url starts with './' */
 791                         url = ++p;
 792                         continue;
 793                     }
 794                     if( '.' != *p )
 795                         break;
 796                     ++p;
 797                     if( '\0' == *p )
 798                     {
 799                         /* relative url is '..' */
 800                     }
 801                     else
 802                     {
 803                         if( '/' != *p )
 804                             break;
 805                         /* relative url starts with '../' */
 806                         ++p;
 807                     }
 808                     url = p;
 809                     do
 810                     {
 811                         --pathend;
 812                     }
 813                     while( '/' != *pathend );
 814                 }
 815                 /* skip over '/' separator */
 816                 ++pathend;
 817                 /* concatenate remaining base URL and relative URL */
 818                 strcpy(pathend, url);
 819             }
 820             return href;
 821         }
 822     }
 823     return NULL;
 824 }
 825
 826 #if defined(XP_UNIX)
 827 int  VlcPlugin::setSize(unsigned width, unsigned height)
 828 {
 829     int diff = (width != i_width) || (height != i_height);
 830
 831     i_width = width;
 832     i_height = height;
 833
 834     /* return size */
 835     return diff;
 836 }
 837
 838 #define BTN_SPACE ((unsigned int)4)
 839 void VlcPlugin::showToolbar()
 840 {
 841     const NPWindow& window = getWindow();
 842     Window control = getControlWindow();
 843     Window video = getVideoWindow();
 844     Display *p_display = ((NPSetWindowCallbackStruct *)window.ws_info)->display;
 845     unsigned int i_height = 0, i_width = BTN_SPACE;
 846
 847     /* load icons */
 848     if( !p_btnPlay )
 849         XpmReadFileToImage( p_display, DATA_PATH "/mozilla/play.xpm",
 850                             &p_btnPlay, NULL, NULL);
 851     if( p_btnPlay )
 852     {
 853         i_height = __MAX( i_height, p_btnPlay->height );
 854     }
 855     if( !p_btnPause )
 856         XpmReadFileToImage( p_display, DATA_PATH "/mozilla/pause.xpm",
 857                             &p_btnPause, NULL, NULL);
 858     if( p_btnPause )
 859     {
 860         i_height = __MAX( i_height, p_btnPause->height );
 861     }
 862     i_width += __MAX( p_btnPause->width, p_btnPlay->width );
 863
 864     if( !p_btnStop )
 865         XpmReadFileToImage( p_display, DATA_PATH "/mozilla/stop.xpm",
 866                             &p_btnStop, NULL, NULL );
 867     if( p_btnStop )
 868     {
 869         i_height = __MAX( i_height, p_btnStop->height );
 870         i_width += BTN_SPACE + p_btnStop->width;
 871     }
 872     if( !p_timeline )
 873         XpmReadFileToImage( p_display, DATA_PATH "/mozilla/time_line.xpm",
 874                             &p_timeline, NULL, NULL);
 875     if( p_timeline )
 876     {
 877         i_height = __MAX( i_height, p_timeline->height );
 878         i_width += BTN_SPACE + p_timeline->width;
 879     }
 880     if( !p_btnTime )
 881         XpmReadFileToImage( p_display, DATA_PATH "/mozilla/time_icon.xpm",
 882                             &p_btnTime, NULL, NULL);
 883     if( p_btnTime )
 884     {
 885         i_height = __MAX( i_height, p_btnTime->height );
 886         i_width += BTN_SPACE + p_btnTime->width;
 887     }
 888     if( !p_btnFullscreen )
 889         XpmReadFileToImage( p_display, DATA_PATH "/mozilla/fullscreen.xpm",
 890                             &p_btnFullscreen, NULL, NULL);
 891     if( p_btnFullscreen )
 892     {
 893         i_height = __MAX( i_height, p_btnFullscreen->height );
 894         i_width += BTN_SPACE + p_btnFullscreen->width;
 895     }
 896     if( !p_btnMute )
 897         XpmReadFileToImage( p_display, DATA_PATH "/mozilla/volume_max.xpm",
 898                             &p_btnMute, NULL, NULL);
 899     if( p_btnMute )
 900     {
 901         i_height = __MAX( i_height, p_btnMute->height );
 902     }
 903     if( !p_btnUnmute )
 904         XpmReadFileToImage( p_display, DATA_PATH "/mozilla/volume_mute.xpm",
 905                             &p_btnUnmute, NULL, NULL);
 906     if( p_btnUnmute )
 907     {
 908         i_height = __MAX( i_height, p_btnUnmute->height );
 909     }
 910     i_width += BTN_SPACE + __MAX( p_btnUnmute->width, p_btnMute->width );
 911
 912     setToolbarSize( i_width, i_height );
 913
 914     if( !p_btnPlay || !p_btnPause || !p_btnStop || !p_timeline ||
 915         !p_btnTime || !p_btnFullscreen || !p_btnMute || !p_btnUnmute )
 916         fprintf(stderr, "Error: some button images not found in %s\n", DATA_PATH );
 917
 918     /* reset panels position and size */
 919     /* XXX  use i_width */
 920     XResizeWindow( p_display, video, window.width, window.height - i_height);
 921     XMoveWindow( p_display, control, 0, window.height - i_height );
 922     XResizeWindow( p_display, control, window.width, i_height -1);
 923
 924     b_toolbar = 1; /* says toolbar is now shown */
 925     redrawToolbar();
 926 }
 927
 928 void VlcPlugin::hideToolbar()
 929 {
 930     const NPWindow& window = getWindow();
 931     Display *p_display = ((NPSetWindowCallbackStruct *)window.ws_info)->display;
 932     Window control = getControlWindow();
 933     Window video = getVideoWindow();
 934
 935     i_tb_width = i_tb_height = 0;
 936
 937     if( p_btnPlay )  XDestroyImage( p_btnPlay );
 938     if( p_btnPause ) XDestroyImage( p_btnPause );
 939     if( p_btnStop )  XDestroyImage( p_btnStop );
 940     if( p_timeline ) XDestroyImage( p_timeline );
 941     if( p_btnTime )  XDestroyImage( p_btnTime );
 942     if( p_btnFullscreen ) XDestroyImage( p_btnFullscreen );
 943     if( p_btnMute )  XDestroyImage( p_btnMute );
 944     if( p_btnUnmute ) XDestroyImage( p_btnUnmute );
 945
 946     p_btnPlay = NULL;
 947     p_btnPause = NULL;
 948     p_btnStop = NULL;
 949     p_timeline = NULL;
 950     p_btnTime = NULL;
 951     p_btnFullscreen = NULL;
 952     p_btnMute = NULL;
 953     p_btnUnmute = NULL;
 954
 955     /* reset panels position and size */
 956     /* XXX  use i_width */
 957     XResizeWindow( p_display, video, window.width, window.height );
 958     XMoveWindow( p_display, control, 0, window.height-1 );
 959     XResizeWindow( p_display, control, window.width, 1 );
 960
 961     b_toolbar = 0; /* says toolbar is now hidden */
 962     redrawToolbar();
 963 }
 964
 965 void VlcPlugin::redrawToolbar()
 966 {
 967     int is_playing = 0;
 968     bool b_mute = false;
 969     unsigned int dst_x, dst_y;
 970     GC gc;
 971     XGCValues gcv;
 972     unsigned int i_tb_width, i_tb_height;
 973
 974     /* This method does nothing if toolbar is hidden. */
 975     if( !b_toolbar || !libvlc_media_player )
 976         return;
 977
 978     const NPWindow& window = getWindow();
 979     Window control = getControlWindow();
 980     Display *p_display = ((NPSetWindowCallbackStruct *)window.ws_info)->display;
 981
 982     getToolbarSize( &i_tb_width, &i_tb_height );
 983
 984     /* get mute info */
 985     b_mute = libvlc_audio_get_mute( libvlc_media_player );
 986
 987     gcv.foreground = BlackPixel( p_display, 0 );
 988     gc = XCreateGC( p_display, control, GCForeground, &gcv );
 989
 990     XFillRectangle( p_display, control, gc,
 991                     0, 0, window.width, i_tb_height );
 992     gcv.foreground = WhitePixel( p_display, 0 );
 993     XChangeGC( p_display, gc, GCForeground, &gcv );
 994
 995     /* position icons */
 996     dst_x = BTN_SPACE;
 997     dst_y = i_tb_height >> 1; /* baseline = vertical middle */
 998
 999     if( p_btnPause && (is_playing == 1) )
1000     {
1001         XPutImage( p_display, control, gc, p_btnPause, 0, 0, dst_x,
1002                    dst_y - (p_btnPause->height >> 1),
1003                    p_btnPause->width, p_btnPause->height );
1004         dst_x += BTN_SPACE + p_btnPause->width;
1005     }
1006     else if( p_btnPlay )
1007     {
1008         XPutImage( p_display, control, gc, p_btnPlay, 0, 0, dst_x,
1009                    dst_y - (p_btnPlay->height >> 1),
1010                    p_btnPlay->width, p_btnPlay->height );
1011         dst_x += BTN_SPACE + p_btnPlay->width;
1012     }
1013
1014     if( p_btnStop )
1015         XPutImage( p_display, control, gc, p_btnStop, 0, 0, dst_x,
1016                    dst_y - (p_btnStop->height >> 1),
1017                    p_btnStop->width, p_btnStop->height );
1018
1019     dst_x += BTN_SPACE + ( p_btnStop ? p_btnStop->width : 0 );
1020
1021     if( p_btnFullscreen )
1022         XPutImage( p_display, control, gc, p_btnFullscreen, 0, 0, dst_x,
1023                    dst_y - (p_btnFullscreen->height >> 1),
1024                    p_btnFullscreen->width, p_btnFullscreen->height );
1025
1026     dst_x += BTN_SPACE + ( p_btnFullscreen ? p_btnFullscreen->width : 0 );
1027
1028     if( p_btnUnmute && b_mute )
1029     {
1030         XPutImage( p_display, control, gc, p_btnUnmute, 0, 0, dst_x,
1031                    dst_y - (p_btnUnmute->height >> 1),
1032                    p_btnUnmute->width, p_btnUnmute->height );
1033
1034         dst_x += BTN_SPACE + ( p_btnUnmute ? p_btnUnmute->width : 0 );
1035     }
1036     else if( p_btnMute )
1037     {
1038         XPutImage( p_display, control, gc, p_btnMute, 0, 0, dst_x,
1039                    dst_y - (p_btnMute->height >> 1),
1040                    p_btnMute->width, p_btnMute->height );
1041
1042         dst_x += BTN_SPACE + ( p_btnMute ? p_btnMute->width : 0 );
1043     }
1044
1045     if( p_timeline )
1046         XPutImage( p_display, control, gc, p_timeline, 0, 0, dst_x,
1047                    dst_y - (p_timeline->height >> 1),
1048                    (window.width-(dst_x+BTN_SPACE)), p_timeline->height );
1049
1050     /* get movie position in % */
1051     if( playlist_isplaying() )
1052     {
1053         i_last_position = (int)((window.width-(dst_x+BTN_SPACE))*
1054                    libvlc_media_player_get_position(libvlc_media_player));
1055     }
1056
1057     if( p_btnTime )
1058         XPutImage( p_display, control, gc, p_btnTime,
1059                    0, 0, (dst_x+i_last_position),
1060                    dst_y - (p_btnTime->height >> 1),
1061                    p_btnTime->width, p_btnTime->height );
1062
1063     XFreeGC( p_display, gc );
1064 }
1065
1066 vlc_toolbar_clicked_t VlcPlugin::getToolbarButtonClicked( int i_xpos, int i_ypos )
1067 {
1068     unsigned int i_dest = BTN_SPACE;
1069     int is_playing = 0;
1070     bool b_mute = false;
1071
1072 #ifndef NDEBUG
1073     fprintf( stderr, "ToolbarButtonClicked:: "
1074                      "trying to match (%d,%d) (%d,%d)\n",
1075              i_xpos, i_ypos, i_tb_height, i_tb_width );
1076 #endif
1077     if( i_ypos >= i_tb_width )
1078         return clicked_Unknown;
1079
1080     /* Note: the order of testing is dependend on the original
1081      * drawing positions of the icon buttons. Buttons are tested
1082      * left to right.
1083      */
1084
1085     /* get isplaying */
1086     is_playing = playlist_isplaying();
1087
1088     /* get mute info */
1089     if( libvlc_media_player )
1090         b_mute = libvlc_audio_get_mute( libvlc_media_player );
1091
1092     /* is Pause of Play button clicked */
1093     if( (is_playing != 1) &&
1094         (i_xpos >= (BTN_SPACE>>1)) &&
1095         (i_xpos <= i_dest + p_btnPlay->width + (BTN_SPACE>>1)) )
1096         return clicked_Play;
1097     else if( (i_xpos >= (BTN_SPACE>>1))  &&
1098              (i_xpos <= i_dest + p_btnPause->width) )
1099         return clicked_Pause;
1100
1101     /* is Stop button clicked */
1102     if( is_playing != 1 )
1103         i_dest += (p_btnPlay->width + (BTN_SPACE>>1));
1104     else
1105         i_dest += (p_btnPause->width + (BTN_SPACE>>1));
1106
1107     if( (i_xpos >= i_dest) &&
1108         (i_xpos <= i_dest + p_btnStop->width + (BTN_SPACE>>1)) )
1109         return clicked_Stop;
1110
1111     /* is Fullscreen button clicked */
1112     i_dest += (p_btnStop->width + (BTN_SPACE>>1));
1113     if( (i_xpos >= i_dest) &&
1114         (i_xpos <= i_dest + p_btnFullscreen->width + (BTN_SPACE>>1)) )
1115         return clicked_Fullscreen;
1116
1117     /* is Mute or Unmute button clicked */
1118     i_dest += (p_btnFullscreen->width + (BTN_SPACE>>1));
1119     if( !b_mute && (i_xpos >= i_dest) &&
1120         (i_xpos <= i_dest + p_btnMute->width + (BTN_SPACE>>1)) )
1121         return clicked_Mute;
1122     else if( (i_xpos >= i_dest) &&
1123              (i_xpos <= i_dest + p_btnUnmute->width + (BTN_SPACE>>1)) )
1124         return clicked_Unmute;
1125
1126     /* is timeline clicked */
1127     if( !b_mute )
1128         i_dest += (p_btnMute->width + (BTN_SPACE>>1));
1129     else
1130         i_dest += (p_btnUnmute->width + (BTN_SPACE>>1));
1131     if( (i_xpos >= i_dest) &&
1132         (i_xpos <= i_dest + p_timeline->width + (BTN_SPACE>>1)) )
1133         return clicked_timeline;
1134
1135     /* is time button clicked */
1136     i_dest += (p_timeline->width + (BTN_SPACE>>1));
1137     if( (i_xpos >= i_dest) &&
1138         (i_xpos <= i_dest + p_btnTime->width + (BTN_SPACE>>1)) )
1139         return clicked_Time;
1140
1141     return clicked_Unknown;
1142 }
1143 #undef BTN_SPACE
1144 #endif
1145
1146 // Verifies the version of the NPAPI.
1147 // The eventListeners use a NPAPI function available
1148 // since Gecko 1.9.
1149 bool VlcPlugin::canUseEventListener()
1150 {
1151     int plugin_major, plugin_minor;
1152     int browser_major, browser_minor;
1153
1154     NPN_Version(&plugin_major, &plugin_minor,
1155                 &browser_major, &browser_minor);
1156
1157     if (browser_minor >= 19 || browser_major > 0)
1158         return true;
1159     return false;
1160 }