git.sesse.net Git - vlc/blob - 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] = { "vlc" };
  74     int ppsz_argc = 1;
  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 #if 0
 103     ppsz_argv[0] = "C:\\Cygwin\\home\\damienf\\vlc-trunk\\vlc";
 104 #endif
 105
 106 #endif /* XP_MACOSX */
 107
 108     /* common settings */
 109     ppsz_argv[ppsz_argc++] = "-vv";
 110     ppsz_argv[ppsz_argc++] = "--no-stats";
 111     ppsz_argv[ppsz_argc++] = "--no-media-library";
 112     ppsz_argv[ppsz_argc++] = "--intf";
 113     ppsz_argv[ppsz_argc++] = "dummy";
 114
 115     const char *progid = NULL;
 116
 117     /* parse plugin arguments */
 118     for( int i = 0; i < argc ; i++ )
 119     {
 120         fprintf(stderr, "argn=%s, argv=%s\n", argn[i], argv[i]);
 121
 122         if( !strcmp( argn[i], "target" )
 123          || !strcmp( argn[i], "mrl")
 124          || !strcmp( argn[i], "filename")
 125          || !strcmp( argn[i], "src") )
 126         {
 127             psz_target = argv[i];
 128         }
 129         else if( !strcmp( argn[i], "autoplay")
 130               || !strcmp( argn[i], "autostart") )
 131         {
 132             b_autoplay = boolValue(argv[i]);
 133         }
 134         else if( !strcmp( argn[i], "fullscreen" ) )
 135         {
 136             if( boolValue(argv[i]) )
 137             {
 138                 ppsz_argv[ppsz_argc++] = "--fullscreen";
 139             }
 140             else
 141             {
 142                 ppsz_argv[ppsz_argc++] = "--no-fullscreen";
 143             }
 144         }
 145         else if( !strcmp( argn[i], "mute" ) )
 146         {
 147             if( boolValue(argv[i]) )
 148             {
 149                 ppsz_argv[ppsz_argc++] = "--volume";
 150                 ppsz_argv[ppsz_argc++] = "0";
 151             }
 152         }
 153         else if( !strcmp( argn[i], "loop")
 154               || !strcmp( argn[i], "autoloop") )
 155         {
 156             if( boolValue(argv[i]) )
 157             {
 158                 ppsz_argv[ppsz_argc++] = "--loop";
 159             }
 160             else {
 161                 ppsz_argv[ppsz_argc++] = "--no-loop";
 162             }
 163         }
 164         else if( !strcmp( argn[i], "version")
 165               || !strcmp( argn[i], "progid") )
 166         {
 167             progid = argv[i];
 168         }
 169     }
 170
 171     libvlc_instance = libvlc_new(ppsz_argc, ppsz_argv, NULL);
 172     if( ! libvlc_instance )
 173     {
 174         return NPERR_GENERIC_ERROR;
 175     }
 176
 177     /*
 178     ** fetch plugin base URL, which is the URL of the page containing the plugin
 179     ** this URL is used for making absolute URL from relative URL that may be
 180     ** passed as an MRL argument
 181     */
 182     NPObject *plugin;
 183
 184     if( NPERR_NO_ERROR == NPN_GetValue(p_browser, NPNVWindowNPObject, &plugin) )
 185     {
 186         /*
 187         ** is there a better way to get that info ?
 188         */
 189         static const char docLocHref[] = "document.location.href";
 190         NPString script;
 191         NPVariant result;
 192
 193         script.utf8characters = docLocHref;
 194         script.utf8length = sizeof(docLocHref)-1;
 195
 196         if( NPN_Evaluate(p_browser, plugin, &script, &result) )
 197         {
 198             if( NPVARIANT_IS_STRING(result) )
 199             {
 200                 NPString &location = NPVARIANT_TO_STRING(result);
 201
 202                 psz_baseURL = new char[location.utf8length+1];
 203                 if( psz_baseURL )
 204                 {
 205                     strncpy(psz_baseURL, location.utf8characters, location.utf8length);
 206                     psz_baseURL[location.utf8length] = '\0';
 207                 }
 208             }
 209             NPN_ReleaseVariantValue(&result);
 210         }
 211         NPN_ReleaseObject(plugin);
 212     }
 213
 214     if( psz_target )
 215     {
 216         // get absolute URL from src
 217         char *psz_absurl = getAbsoluteURL(psz_target);
 218         psz_target = psz_absurl ? psz_absurl : strdup(psz_target);
 219     }
 220
 221     /* assign plugin script root class */
 222     if( (NULL != progid) && (!strcmp(progid, "VideoLAN.VLCPlugin.2")) )
 223     {
 224         /* new APIs */
 225         p_scriptClass = RuntimeNPClass<LibvlcRootNPObject>::getClass();
 226     }
 227     else
 228     {
 229         /* legacy APIs */
 230         p_scriptClass = RuntimeNPClass<VlcNPObject>::getClass();
 231     }
 232
 233     return NPERR_NO_ERROR;
 234 }
 235
 236 #if 0
 237 #ifdef XP_WIN
 238 /* This is really ugly but there is a deadlock when stopping a stream
 239  * (in VLC_CleanUp()) because the video output is a child of the drawable but
 240  * is in a different thread. */
 241 static void HackStopVout( VlcPlugin* p_plugin )
 242 {
 243     MSG msg;
 244     HWND hwnd;
 245     vlc_value_t value;
 246
 247     int i_vlc = libvlc_get_vlc_id(p_plugin->libvlc_instance);
 248     VLC_VariableGet( i_vlc, "drawable", &value );
 249
 250     hwnd = FindWindowEx( (HWND)value.i_int, 0, 0, 0 );
 251     if( !hwnd ) return;
 252
 253     PostMessage( hwnd, WM_CLOSE, 0, 0 );
 254
 255     do
 256     {
 257         while( PeekMessage( &msg, (HWND)value.i_int, 0, 0, PM_REMOVE ) )
 258         {
 259             TranslateMessage(&msg);
 260             DispatchMessage(&msg);
 261         }
 262         if( FindWindowEx( (HWND)value.i_int, 0, 0, 0 ) ) Sleep( 10 );
 263     }
 264     while( (hwnd = FindWindowEx( (HWND)value.i_int, 0, 0, 0 )) );
 265 }
 266 #endif /* XP_WIN */
 267 #endif
 268
 269 VlcPlugin::~VlcPlugin()
 270 {
 271     delete psz_baseURL;
 272     delete psz_target;
 273     if( libvlc_log )
 274         libvlc_log_close(libvlc_log, NULL);
 275     if( libvlc_instance )
 276         libvlc_destroy(libvlc_instance, NULL );
 277 }
 278
 279 /*****************************************************************************
 280  * VlcPlugin methods
 281  *****************************************************************************/
 282
 283 char *VlcPlugin::getAbsoluteURL(const char *url)
 284 {
 285     if( NULL != url )
 286     {
 287         // check whether URL is already absolute
 288         const char *end=strchr(url, ':');
 289         if( (NULL != end) && (end != url) )
 290         {
 291             // validate protocol header
 292             const char *start = url;
 293             while( start != end ) {
 294                 char c = tolower(*start);
 295                 if( (c < 'a') || (c > 'z') )
 296                     // not valid protocol header, assume relative URL
 297                     goto relativeurl;
 298                 ++start;
 299             }
 300             /* we have a protocol header, therefore URL is absolute */
 301             return strdup(url);
 302         }
 303
 304 relativeurl:
 305
 306         if( psz_baseURL )
 307         {
 308             size_t baseLen = strlen(psz_baseURL);
 309             char *href = new char[baseLen+strlen(url)+1];
 310             if( href )
 311             {
 312                 /* prepend base URL */
 313                 strcpy(href, psz_baseURL);
 314
 315                 /*
 316                 ** relative url could be empty,
 317                 ** in which case return base URL
 318                 */
 319                 if( '\0' == *url )
 320                     return href;
 321
 322                 /*
 323                 ** locate pathname part of base URL
 324                 */
 325
 326                 /* skip over protocol part  */
 327                 char *pathstart = strchr(href, ':');
 328                 char *pathend;
 329                 if( pathstart )
 330                 {
 331                     if( '/' == *(++pathstart) )
 332                     {
 333                         if( '/' == *(++pathstart) )
 334                         {
 335                             ++pathstart;
 336                         }
 337                     }
 338                     /* skip over host part */
 339                     pathstart = strchr(pathstart, '/');
 340                     pathend = href+baseLen;
 341                     if( ! pathstart )
 342                     {
 343                         // no path, add a / past end of url (over '\0')
 344                         pathstart = pathend;
 345                         *pathstart = '/';
 346                     }
 347                 }
 348                 else
 349                 {
 350                     /* baseURL is just a UNIX path */
 351                     if( '/' != *href )
 352                     {
 353                         /* baseURL is not an absolute path */
 354                         return NULL;
 355                     }
 356                     pathstart = href;
 357                     pathend = href+baseLen;
 358                 }
 359
 360                 /* relative URL made of an absolute path ? */
 361                 if( '/' == *url )
 362                 {
 363                     /* replace path completely */
 364                     strcpy(pathstart, url);
 365                     return href;
 366                 }
 367
 368                 /* find last path component and replace it */
 369                 while( '/' != *pathend)
 370                     --pathend;
 371
 372                 /*
 373                 ** if relative url path starts with one or more '../',
 374                 ** factor them out of href so that we return a
 375                 ** normalized URL
 376                 */
 377                 while( pathend != pathstart )
 378                 {
 379                     const char *p = url;
 380                     if( '.' != *p )
 381                         break;
 382                     ++p;
 383                     if( '\0' == *p  )
 384                     {
 385                         /* relative url is just '.' */
 386                         url = p;
 387                         break;
 388                     }
 389                     if( '/' == *p  )
 390                     {
 391                         /* relative url starts with './' */
 392                         url = ++p;
 393                         continue;
 394                     }
 395                     if( '.' != *p )
 396                         break;
 397                     ++p;
 398                     if( '\0' == *p )
 399                     {
 400                         /* relative url is '..' */
 401                     }
 402                     else
 403                     {
 404                         if( '/' != *p )
 405                             break;
 406                         /* relative url starts with '../' */
 407                         ++p;
 408                     }
 409                     url = p;
 410                     do
 411                     {
 412                         --pathend;
 413                     }
 414                     while( '/' != *pathend );
 415                 }
 416                 /* skip over '/' separator */
 417                 ++pathend;
 418                 /* concatenate remaining base URL and relative URL */
 419                 strcpy(pathend, url);
 420             }
 421             return href;
 422         }
 423     }
 424     return NULL;
 425 }
 426
 427 #if XP_UNIX
 428 int  VlcPlugin::setSize(unsigned width, unsigned height)
 429 {
 430     int diff = (width != i_width) || (height != i_height);
 431
 432     i_width = width;
 433     i_height = height;
 434
 435     /* return size */
 436     return diff;
 437 }
 438 #endif
 439