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

   1 /*****************************************************************************
   2  * vlcplugin.cpp: a VLC plugin for Mozilla
   3  *****************************************************************************
   4  * Copyright (C) 2002-2005 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *          Damien Fouilleul <damienf.fouilleul@laposte.net>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28 #include "config.h"
  29
  30 #ifdef HAVE_MOZILLA_CONFIG_H
  31 #   include <mozilla-config.h>
  32 #endif
  33
  34 #include "vlcplugin.h"
  35 #include "control/npovlc.h"
  36 #include "control/npolibvlc.h"
  37
  38 #include <ctype.h>
  39
  40 /*****************************************************************************
  41  * VlcPlugin constructor and destructor
  42  *****************************************************************************/
  43 VlcPlugin::VlcPlugin( NPP instance, uint16 mode ) :
  44     i_npmode(mode),
  45     b_stream(0),
  46     b_autoplay(1),
  47     psz_target(NULL),
  48     libvlc_instance(NULL),
  49     libvlc_log(NULL),
  50     p_scriptClass(NULL),
  51     p_browser(instance),
  52     psz_baseURL(NULL)
  53 #if XP_WIN
  54     ,pf_wndproc(NULL)
  55 #endif
  56 #if XP_UNIX
  57     ,i_width((unsigned)-1)
  58     ,i_height((unsigned)-1)
  59 #endif
  60 {
  61     memset(&npwindow, 0, sizeof(NPWindow));
  62 }
  63
  64 static bool boolValue(const char *value) {
  65     return ( !strcmp(value, "1") ||
  66              !strcasecmp(value, "true") ||
  67              !strcasecmp(value, "yes") );
  68 }
  69
  70 NPError VlcPlugin::init(int argc, char* const argn[], char* const argv[])
  71 {
  72     /* prepare VLC command line */
  73     char *ppsz_argv[32];
  74     int ppsz_argc = 0;
  75
  76     /* locate VLC module path */
  77 #ifdef XP_MACOSX
  78     ppsz_argv[ppsz_argc++] = "--plugin-path";
  79     ppsz_argv[ppsz_argc++] = "/Library/Internet Plug-Ins/VLC Plugin.plugin/"
  80                              "Contents/MacOS/modules";
  81 #elif defined(XP_WIN)
  82     HKEY h_key;
  83     DWORD i_type, i_data = MAX_PATH + 1;
  84     char p_data[MAX_PATH + 1];
  85     if( RegOpenKeyEx( HKEY_LOCAL_MACHINE, "Software\\VideoLAN\\VLC",
  86                       0, KEY_READ, &h_key ) == ERROR_SUCCESS )
  87     {
  88          if( RegQueryValueEx( h_key, "InstallDir", 0, &i_type,
  89                               (LPBYTE)p_data, &i_data ) == ERROR_SUCCESS )
  90          {
  91              if( i_type == REG_SZ )
  92              {
  93                  strcat( p_data, "\\plugins" );
  94                  ppsz_argv[ppsz_argc++] = "--plugin-path";
  95                  ppsz_argv[ppsz_argc++] = p_data;
  96              }
  97          }
  98          RegCloseKey( h_key );
  99     }
 100     ppsz_argv[ppsz_argc++] = "--no-one-instance";
 101
 102 #endif /* XP_MACOSX */
 103
 104     /* common settings */
 105     ppsz_argv[ppsz_argc++] = "-vv";
 106     ppsz_argv[ppsz_argc++] = "--no-stats";
 107     ppsz_argv[ppsz_argc++] = "--no-media-library";
 108     ppsz_argv[ppsz_argc++] = "--intf";
 109     ppsz_argv[ppsz_argc++] = "dummy";
 110
 111     const char *progid = NULL;
 112
 113     /* parse plugin arguments */
 114     for( int i = 0; i < argc ; i++ )
 115     {
 116         fprintf(stderr, "argn=%s, argv=%s\n", argn[i], argv[i]);
 117
 118         if( !strcmp( argn[i], "target" )
 119          || !strcmp( argn[i], "mrl")
 120          || !strcmp( argn[i], "filename")
 121          || !strcmp( argn[i], "src") )
 122         {
 123             psz_target = argv[i];
 124         }
 125         else if( !strcmp( argn[i], "autoplay")
 126               || !strcmp( argn[i], "autostart") )
 127         {
 128             b_autoplay = boolValue(argv[i]);
 129         }
 130         else if( !strcmp( argn[i], "fullscreen" ) )
 131         {
 132             if( boolValue(argv[i]) )
 133             {
 134                 ppsz_argv[ppsz_argc++] = "--fullscreen";
 135             }
 136             else
 137             {
 138                 ppsz_argv[ppsz_argc++] = "--no-fullscreen";
 139             }
 140         }
 141         else if( !strcmp( argn[i], "mute" ) )
 142         {
 143             if( boolValue(argv[i]) )
 144             {
 145                 ppsz_argv[ppsz_argc++] = "--volume";
 146                 ppsz_argv[ppsz_argc++] = "0";
 147             }
 148         }
 149         else if( !strcmp( argn[i], "loop")
 150               || !strcmp( argn[i], "autoloop") )
 151         {
 152             if( boolValue(argv[i]) )
 153             {
 154                 ppsz_argv[ppsz_argc++] = "--loop";
 155             }
 156             else {
 157                 ppsz_argv[ppsz_argc++] = "--no-loop";
 158             }
 159         }
 160         else if( !strcmp( argn[i], "version")
 161               || !strcmp( argn[i], "progid") )
 162         {
 163             progid = argv[i];
 164         }
 165     }
 166
 167     libvlc_instance = libvlc_new(ppsz_argc, ppsz_argv, NULL);
 168     if( ! libvlc_instance )
 169     {
 170         return NPERR_GENERIC_ERROR;
 171     }
 172
 173     /*
 174     ** fetch plugin base URL, which is the URL of the page containing the plugin
 175     ** this URL is used for making absolute URL from relative URL that may be
 176     ** passed as an MRL argument
 177     */
 178     NPObject *plugin;
 179
 180     if( NPERR_NO_ERROR == NPN_GetValue(p_browser, NPNVWindowNPObject, &plugin) )
 181     {
 182         /*
 183         ** is there a better way to get that info ?
 184         */
 185         static const char docLocHref[] = "document.location.href";
 186         NPString script;
 187         NPVariant result;
 188
 189         script.utf8characters = docLocHref;
 190         script.utf8length = sizeof(docLocHref)-1;
 191
 192         if( NPN_Evaluate(p_browser, plugin, &script, &result) )
 193         {
 194             if( NPVARIANT_IS_STRING(result) )
 195             {
 196                 NPString &location = NPVARIANT_TO_STRING(result);
 197
 198                 psz_baseURL = new char[location.utf8length+1];
 199                 if( psz_baseURL )
 200                 {
 201                     strncpy(psz_baseURL, location.utf8characters, location.utf8length);
 202                     psz_baseURL[location.utf8length] = '\0';
 203                 }
 204             }
 205             NPN_ReleaseVariantValue(&result);
 206         }
 207         NPN_ReleaseObject(plugin);
 208     }
 209
 210     if( psz_target )
 211     {
 212         // get absolute URL from src
 213         char *psz_absurl = getAbsoluteURL(psz_target);
 214         psz_target = psz_absurl ? psz_absurl : strdup(psz_target);
 215     }
 216
 217     /* assign plugin script root class */
 218     if( (NULL != progid) && (!strcmp(progid, "VideoLAN.VLCPlugin.2")) )
 219     {
 220         /* new APIs */
 221         p_scriptClass = RuntimeNPClass<LibvlcRootNPObject>::getClass();
 222     }
 223     else
 224     {
 225         /* legacy APIs */
 226         p_scriptClass = RuntimeNPClass<VlcNPObject>::getClass();
 227     }
 228
 229     return NPERR_NO_ERROR;
 230 }
 231
 232 #if 0
 233 #ifdef XP_WIN
 234 /* This is really ugly but there is a deadlock when stopping a stream
 235  * (in VLC_CleanUp()) because the video output is a child of the drawable but
 236  * is in a different thread. */
 237 static void HackStopVout( VlcPlugin* p_plugin )
 238 {
 239     MSG msg;
 240     HWND hwnd;
 241     vlc_value_t value;
 242
 243     int i_vlc = libvlc_get_vlc_id(p_plugin->libvlc_instance);
 244     VLC_VariableGet( i_vlc, "drawable", &value );
 245
 246     hwnd = FindWindowEx( (HWND)value.i_int, 0, 0, 0 );
 247     if( !hwnd ) return;
 248
 249     PostMessage( hwnd, WM_CLOSE, 0, 0 );
 250
 251     do
 252     {
 253         while( PeekMessage( &msg, (HWND)value.i_int, 0, 0, PM_REMOVE ) )
 254         {
 255             TranslateMessage(&msg);
 256             DispatchMessage(&msg);
 257         }
 258         if( FindWindowEx( (HWND)value.i_int, 0, 0, 0 ) ) Sleep( 10 );
 259     }
 260     while( (hwnd = FindWindowEx( (HWND)value.i_int, 0, 0, 0 )) );
 261 }
 262 #endif /* XP_WIN */
 263 #endif
 264
 265 VlcPlugin::~VlcPlugin()
 266 {
 267     delete psz_baseURL;
 268     delete psz_target;
 269     if( libvlc_log )
 270         libvlc_log_close(libvlc_log, NULL);
 271     if( libvlc_instance )
 272         libvlc_release(libvlc_instance);
 273 }
 274
 275 /*****************************************************************************
 276  * VlcPlugin methods
 277  *****************************************************************************/
 278
 279 char *VlcPlugin::getAbsoluteURL(const char *url)
 280 {
 281     if( NULL != url )
 282     {
 283         // check whether URL is already absolute
 284         const char *end=strchr(url, ':');
 285         if( (NULL != end) && (end != url) )
 286         {
 287             // validate protocol header
 288             const char *start = url;
 289             char c = *start;
 290             if( isalpha(c) )
 291             {
 292                 ++start;
 293                 while( start != end )
 294                 {
 295                     c  = *start;
 296                     if( ! (isalnum(c)
 297                        || ('-' == c)
 298                        || ('+' == c)
 299                        || ('.' == c)
 300                        || ('/' == c)) ) /* VLC uses / to allow user to specify a demuxer */
 301                         // not valid protocol header, assume relative URL
 302                         goto relativeurl;
 303                     ++start;
 304                 }
 305                 /* we have a protocol header, therefore URL is absolute */
 306                 return strdup(url);
 307             }
 308             // not a valid protocol header, assume relative URL
 309         }
 310
 311 relativeurl:
 312
 313         if( psz_baseURL )
 314         {
 315             size_t baseLen = strlen(psz_baseURL);
 316             char *href = new char[baseLen+strlen(url)+1];
 317             if( href )
 318             {
 319                 /* prepend base URL */
 320                 strcpy(href, psz_baseURL);
 321
 322                 /*
 323                 ** relative url could be empty,
 324                 ** in which case return base URL
 325                 */
 326                 if( '\0' == *url )
 327                     return href;
 328
 329                 /*
 330                 ** locate pathname part of base URL
 331                 */
 332
 333                 /* skip over protocol part  */
 334                 char *pathstart = strchr(href, ':');
 335                 char *pathend;
 336                 if( pathstart )
 337                 {
 338                     if( '/' == *(++pathstart) )
 339                     {
 340                         if( '/' == *(++pathstart) )
 341                         {
 342                             ++pathstart;
 343                         }
 344                     }
 345                     /* skip over host part */
 346                     pathstart = strchr(pathstart, '/');
 347                     pathend = href+baseLen;
 348                     if( ! pathstart )
 349                     {
 350                         // no path, add a / past end of url (over '\0')
 351                         pathstart = pathend;
 352                         *pathstart = '/';
 353                     }
 354                 }
 355                 else
 356                 {
 357                     /* baseURL is just a UNIX path */
 358                     if( '/' != *href )
 359                     {
 360                         /* baseURL is not an absolute path */
 361                         return NULL;
 362                     }
 363                     pathstart = href;
 364                     pathend = href+baseLen;
 365                 }
 366
 367                 /* relative URL made of an absolute path ? */
 368                 if( '/' == *url )
 369                 {
 370                     /* replace path completely */
 371                     strcpy(pathstart, url);
 372                     return href;
 373                 }
 374
 375                 /* find last path component and replace it */
 376                 while( '/' != *pathend)
 377                     --pathend;
 378
 379                 /*
 380                 ** if relative url path starts with one or more '../',
 381                 ** factor them out of href so that we return a
 382                 ** normalized URL
 383                 */
 384                 while( pathend != pathstart )
 385                 {
 386                     const char *p = url;
 387                     if( '.' != *p )
 388                         break;
 389                     ++p;
 390                     if( '\0' == *p  )
 391                     {
 392                         /* relative url is just '.' */
 393                         url = p;
 394                         break;
 395                     }
 396                     if( '/' == *p  )
 397                     {
 398                         /* relative url starts with './' */
 399                         url = ++p;
 400                         continue;
 401                     }
 402                     if( '.' != *p )
 403                         break;
 404                     ++p;
 405                     if( '\0' == *p )
 406                     {
 407                         /* relative url is '..' */
 408                     }
 409                     else
 410                     {
 411                         if( '/' != *p )
 412                             break;
 413                         /* relative url starts with '../' */
 414                         ++p;
 415                     }
 416                     url = p;
 417                     do
 418                     {
 419                         --pathend;
 420                     }
 421                     while( '/' != *pathend );
 422                 }
 423                 /* skip over '/' separator */
 424                 ++pathend;
 425                 /* concatenate remaining base URL and relative URL */
 426                 strcpy(pathend, url);
 427             }
 428             return href;
 429         }
 430     }
 431     return NULL;
 432 }
 433
 434 #if XP_UNIX
 435 int  VlcPlugin::setSize(unsigned width, unsigned height)
 436 {
 437     int diff = (width != i_width) || (height != i_height);
 438
 439     i_width = width;
 440     i_height = height;
 441
 442     /* return size */
 443     return diff;
 444 }
 445 #endif
 446