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 /*****************************************************************************
  39  * VlcPlugin constructor and destructor
  40  *****************************************************************************/
  41 VlcPlugin::VlcPlugin( NPP instance, uint16 mode ) :
  42     i_npmode(mode),
  43     b_stream(0),
  44     b_autoplay(0),
  45     psz_target(NULL),
  46     libvlc_instance(NULL),
  47     scriptClass(NULL),
  48     p_browser(instance),
  49     psz_baseURL(NULL)
  50 #if XP_WIN
  51     ,pf_wndproc(NULL)
  52 #endif
  53 #if XP_UNIX
  54     ,i_width((unsigned)-1)
  55     ,i_height((unsigned)-1)
  56 #endif
  57 {
  58     memset(&npwindow, 0, sizeof(NPWindow));
  59 }
  60
  61 static int boolValue(const char *value) {
  62     return ( !strcmp(value, "1") ||
  63              !strcasecmp(value, "true") ||
  64              !strcasecmp(value, "yes") );
  65 }
  66
  67 NPError VlcPlugin::init(int argc, char* const argn[], char* const argv[])
  68 {
  69     /* prepare VLC command line */
  70     char *ppsz_argv[32] =
  71     {
  72         "vlc",
  73         "-vv",
  74         "--no-stats",
  75         "--no-media-library",
  76         "--intf", "dummy",
  77     };
  78     int ppsz_argc = 6;
  79
  80     /* locate VLC module path */
  81 #ifdef XP_MACOSX
  82     ppsz_argv[ppsz_argc++] = "--plugin-path";
  83     ppsz_argv[ppsz_argc++] = "/Library/Internet Plug-Ins/VLC Plugin.plugin/"
  84                              "Contents/MacOS/modules";
  85 #elif defined(XP_WIN)
  86     HKEY h_key;
  87     DWORD i_type, i_data = MAX_PATH + 1;
  88     char p_data[MAX_PATH + 1];
  89     if( RegOpenKeyEx( HKEY_LOCAL_MACHINE, "Software\\VideoLAN\\VLC",
  90                       0, KEY_READ, &h_key ) == ERROR_SUCCESS )
  91     {
  92          if( RegQueryValueEx( h_key, "InstallDir", 0, &i_type,
  93                               (LPBYTE)p_data, &i_data ) == ERROR_SUCCESS )
  94          {
  95              if( i_type == REG_SZ )
  96              {
  97                  strcat( p_data, "\\vlc" );
  98                  ppsz_argv[0] = p_data;
  99              }
 100          }
 101          RegCloseKey( h_key );
 102     }
 103     ppsz_argv[ppsz_argc++] = "--no-one-instance";
 104 #if 0
 105     ppsz_argv[ppsz_argc++] = "--fast-mutex";
 106     ppsz_argv[ppsz_argc++] = "--win9x-cv-method=1";
 107 #endif
 108
 109 #endif /* XP_MACOSX */
 110
 111     const char *version = 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         {
 162             version = argv[i];
 163         }
 164     }
 165
 166     libvlc_instance = libvlc_new(ppsz_argc, ppsz_argv, NULL);
 167     if( ! libvlc_instance )
 168     {
 169         return NPERR_GENERIC_ERROR;
 170     }
 171
 172     /*
 173     ** fetch plugin base URL, which is the URL of the page containing the plugin
 174     ** this URL is used for making absolute URL from relative URL that may be
 175     ** passed as an MRL argument
 176     */
 177     NPObject *plugin;
 178
 179     if( NPERR_NO_ERROR == NPN_GetValue(p_browser, NPNVWindowNPObject, &plugin) )
 180     {
 181         /*
 182         ** is there a better way to get that info ?
 183         */
 184         static const char docLocHref[] = "document.location.href";
 185         NPString script;
 186         NPVariant result;
 187
 188         script.utf8characters = docLocHref;
 189         script.utf8length = sizeof(docLocHref)-1;
 190
 191         if( NPN_Evaluate(p_browser, plugin, &script, &result) )
 192         {
 193             if( NPVARIANT_IS_STRING(result) )
 194             {
 195                 NPString &location = NPVARIANT_TO_STRING(result);
 196
 197                 psz_baseURL = new char[location.utf8length+1];
 198                 if( psz_baseURL )
 199                 {
 200                     strncpy(psz_baseURL, location.utf8characters, location.utf8length);
 201                     psz_baseURL[location.utf8length] = '\0';
 202                 }
 203             }
 204             NPN_ReleaseVariantValue(&result);
 205         }
 206         NPN_ReleaseObject(plugin);
 207     }
 208
 209     if( psz_target )
 210     {
 211         // get absolute URL from src
 212         psz_target = getAbsoluteURL(psz_target);
 213     }
 214
 215     /* assign plugin script root class */
 216     if( (NULL != version) && (!strcmp(version, "VideoLAN.VLCPlugin.2")) )
 217     {
 218         /* new APIs */
 219         scriptClass = RuntimeNPClass<LibvlcRootNPObject>::getClass();
 220     }
 221     else
 222     {
 223         /* legacy APIs */
 224         scriptClass = RuntimeNPClass<VlcNPObject>::getClass();
 225     }
 226
 227     return NPERR_NO_ERROR;
 228 }
 229
 230 #if 0
 231 #ifdef XP_WIN
 232 /* This is really ugly but there is a deadlock when stopping a stream
 233  * (in VLC_CleanUp()) because the video output is a child of the drawable but
 234  * is in a different thread. */
 235 static void HackStopVout( VlcPlugin* p_plugin )
 236 {
 237     MSG msg;
 238     HWND hwnd;
 239     vlc_value_t value;
 240
 241     int i_vlc = libvlc_get_vlc_id(p_plugin->libvlc_instance);
 242     VLC_VariableGet( i_vlc, "drawable", &value );
 243
 244     hwnd = FindWindowEx( (HWND)value.i_int, 0, 0, 0 );
 245     if( !hwnd ) return;
 246
 247     PostMessage( hwnd, WM_CLOSE, 0, 0 );
 248
 249     do
 250     {
 251         while( PeekMessage( &msg, (HWND)value.i_int, 0, 0, PM_REMOVE ) )
 252         {
 253             TranslateMessage(&msg);
 254             DispatchMessage(&msg);
 255         }
 256         if( FindWindowEx( (HWND)value.i_int, 0, 0, 0 ) ) Sleep( 10 );
 257     }
 258     while( (hwnd = FindWindowEx( (HWND)value.i_int, 0, 0, 0 )) );
 259 }
 260 #endif /* XP_WIN */
 261 #endif
 262
 263 VlcPlugin::~VlcPlugin()
 264 {
 265     delete psz_baseURL;
 266     delete psz_target;
 267     if( libvlc_instance )
 268         libvlc_destroy(libvlc_instance);
 269 }
 270
 271 /*****************************************************************************
 272  * VlcPlugin methods
 273  *****************************************************************************/
 274
 275 char *VlcPlugin::getAbsoluteURL(const char *url)
 276 {
 277     if( NULL != url )
 278     {
 279         // check whether URL is already absolute
 280         const char *end=strchr(url, ':');
 281         if( (NULL != end) && (end != url) )
 282         {
 283             // validate protocol header
 284             const char *start = url;
 285             while( start != end ) {
 286                 char c = *start | 0x20;
 287                 if( (c < 'a') || (c > 'z') )
 288                     // not valid protocol header, assume relative URL
 289                     break;
 290                 ++start;
 291             }
 292             /* we have a protocol header, therefore URL is absolute */
 293             return strdup(url);
 294         }
 295
 296         if( psz_baseURL )
 297         {
 298             size_t baseLen = strlen(psz_baseURL);
 299             char *href = new char[baseLen+strlen(url)];
 300             if( href )
 301             {
 302                 /* prepend base URL */
 303                 strcpy(href, psz_baseURL);
 304
 305                 /*
 306                 ** relative url could be empty,
 307                 ** in which case return base URL
 308                 */
 309                 if( '\0' == *url )
 310                     return href;
 311
 312                 /*
 313                 ** locate pathname part of base URL
 314                 */
 315
 316                 /* skip over protocol part  */
 317                 char *pathstart = strchr(href, ':');
 318                 char *pathend;
 319                 if( '/' == *(++pathstart) )
 320                 {
 321                     if( '/' == *(++pathstart) )
 322                     {
 323                         ++pathstart;
 324                     }
 325                 }
 326                 /* skip over host part */
 327                 pathstart = strchr(pathstart, '/');
 328                 pathend = href+baseLen;
 329                 if( ! pathstart )
 330                 {
 331                     // no path, add a / past end of url (over '\0')
 332                     pathstart = pathend;
 333                     *pathstart = '/';
 334                 }
 335
 336                 /* relative URL made of an absolute path ? */
 337                 if( '/' == *url )
 338                 {
 339                     /* replace path completely */
 340                     strcpy(pathstart, url);
 341                     return href;
 342                 }
 343
 344                 /* find last path component and replace it */
 345                 while( '/' != *pathend) --pathend;
 346
 347                 /*
 348                 ** if relative url path starts with one or more '../',
 349                 ** factor them out of href so that we return a
 350                 ** normalized URL
 351                 */
 352                 while( pathend != pathstart )
 353                 {
 354                     const char *p = url;
 355                     if( '.' != *p )
 356                         break;
 357                     ++p;
 358                     if( '.' != *p )
 359                         break;
 360                     ++p;
 361                     if( '/' != *p )
 362                         break;
 363                     ++p;
 364                     url = p;
 365                     while( '/' != *pathend ) --pathend;
 366                 }
 367                 /* concatenate remaining base URL and relative URL */
 368                 strcpy(pathend+1, url);
 369             }
 370             return href;
 371         }
 372     }
 373     return NULL;
 374 }
 375
 376 #if XP_UNIX
 377 int  VlcPlugin::setSize(unsigned width, unsigned height)
 378 {
 379     int diff = (width != i_width) || (height != i_height);
 380
 381     i_width = width;
 382     i_height = height;
 383
 384     /* return size */
 385     return diff;
 386 }
 387 #endif
 388