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     i_control_height(45),
  48     psz_target(NULL),
  49     libvlc_instance(NULL),
  50     libvlc_log(NULL),
  51     p_scriptClass(NULL),
  52     p_browser(instance),
  53     psz_baseURL(NULL)
  54 #if XP_WIN
  55     ,pf_wndproc(NULL)
  56 #endif
  57 #if XP_UNIX
  58     ,i_width((unsigned)-1)
  59     ,i_height((unsigned)-1)
  60 #endif
  61 {
  62     memset(&npwindow, 0, sizeof(NPWindow));
  63 }
  64
  65 static bool boolValue(const char *value) {
  66     return ( !strcmp(value, "1") ||
  67              !strcasecmp(value, "true") ||
  68              !strcasecmp(value, "yes") );
  69 }
  70
  71 NPError VlcPlugin::init(int argc, char* const argn[], char* const argv[])
  72 {
  73     /* prepare VLC command line */
  74     char *ppsz_argv[32];
  75     int ppsz_argc = 0;
  76
  77     /* locate VLC module path */
  78 #ifdef XP_MACOSX
  79     ppsz_argv[ppsz_argc++] = "--plugin-path";
  80     ppsz_argv[ppsz_argc++] = "/Library/Internet Plug-Ins/VLC Plugin.plugin/"
  81                              "Contents/MacOS/modules";
  82 #elif defined(XP_WIN)
  83     HKEY h_key;
  84     DWORD i_type, i_data = MAX_PATH + 1;
  85     char p_data[MAX_PATH + 1];
  86     if( RegOpenKeyEx( HKEY_LOCAL_MACHINE, "Software\\VideoLAN\\VLC",
  87                       0, KEY_READ, &h_key ) == ERROR_SUCCESS )
  88     {
  89          if( RegQueryValueEx( h_key, "InstallDir", 0, &i_type,
  90                               (LPBYTE)p_data, &i_data ) == ERROR_SUCCESS )
  91          {
  92              if( i_type == REG_SZ )
  93              {
  94                  strcat( p_data, "\\plugins" );
  95                  ppsz_argv[ppsz_argc++] = "--plugin-path";
  96                  ppsz_argv[ppsz_argc++] = p_data;
  97              }
  98          }
  99          RegCloseKey( h_key );
 100     }
 101     ppsz_argv[ppsz_argc++] = "--no-one-instance";
 102
 103 #endif /* XP_MACOSX */
 104
 105     /* common settings */
 106     ppsz_argv[ppsz_argc++] = "-vv";
 107     ppsz_argv[ppsz_argc++] = "--no-stats";
 108     ppsz_argv[ppsz_argc++] = "--no-media-library";
 109     ppsz_argv[ppsz_argc++] = "--intf";
 110     ppsz_argv[ppsz_argc++] = "dummy";
 111
 112     const char *progid = NULL;
 113
 114     /* parse plugin arguments */
 115     for( int i = 0; i < argc ; i++ )
 116     {
 117         fprintf(stderr, "argn=%s, argv=%s\n", argn[i], argv[i]);
 118
 119         if( !strcmp( argn[i], "target" )
 120          || !strcmp( argn[i], "mrl")
 121          || !strcmp( argn[i], "filename")
 122          || !strcmp( argn[i], "src") )
 123         {
 124             psz_target = argv[i];
 125         }
 126         else if( !strcmp( argn[i], "autoplay")
 127               || !strcmp( argn[i], "autostart") )
 128         {
 129             b_autoplay = boolValue(argv[i]);
 130         }
 131         else if( !strcmp( argn[i], "fullscreen" ) )
 132         {
 133             if( boolValue(argv[i]) )
 134             {
 135                 ppsz_argv[ppsz_argc++] = "--fullscreen";
 136             }
 137             else
 138             {
 139                 ppsz_argv[ppsz_argc++] = "--no-fullscreen";
 140             }
 141         }
 142         else if( !strcmp( argn[i], "mute" ) )
 143         {
 144             if( boolValue(argv[i]) )
 145             {
 146                 ppsz_argv[ppsz_argc++] = "--volume";
 147                 ppsz_argv[ppsz_argc++] = "0";
 148             }
 149         }
 150         else if( !strcmp( argn[i], "loop")
 151               || !strcmp( argn[i], "autoloop") )
 152         {
 153             if( boolValue(argv[i]) )
 154             {
 155                 ppsz_argv[ppsz_argc++] = "--loop";
 156             }
 157             else {
 158                 ppsz_argv[ppsz_argc++] = "--no-loop";
 159             }
 160         }
 161         else if( !strcmp( argn[i], "version")
 162               || !strcmp( argn[i], "progid") )
 163         {
 164             progid = argv[i];
 165         }
 166     }
 167
 168     libvlc_instance = libvlc_new(ppsz_argc, ppsz_argv, NULL);
 169     if( ! libvlc_instance )
 170     {
 171         return NPERR_GENERIC_ERROR;
 172     }
 173
 174     /*
 175     ** fetch plugin base URL, which is the URL of the page containing the plugin
 176     ** this URL is used for making absolute URL from relative URL that may be
 177     ** passed as an MRL argument
 178     */
 179     NPObject *plugin;
 180
 181     if( NPERR_NO_ERROR == NPN_GetValue(p_browser, NPNVWindowNPObject, &plugin) )
 182     {
 183         /*
 184         ** is there a better way to get that info ?
 185         */
 186         static const char docLocHref[] = "document.location.href";
 187         NPString script;
 188         NPVariant result;
 189
 190         script.utf8characters = docLocHref;
 191         script.utf8length = sizeof(docLocHref)-1;
 192
 193         if( NPN_Evaluate(p_browser, plugin, &script, &result) )
 194         {
 195             if( NPVARIANT_IS_STRING(result) )
 196             {
 197                 NPString &location = NPVARIANT_TO_STRING(result);
 198
 199                 psz_baseURL = new char[location.utf8length+1];
 200                 if( psz_baseURL )
 201                 {
 202                     strncpy(psz_baseURL, location.utf8characters, location.utf8length);
 203                     psz_baseURL[location.utf8length] = '\0';
 204                 }
 205             }
 206             NPN_ReleaseVariantValue(&result);
 207         }
 208         NPN_ReleaseObject(plugin);
 209     }
 210
 211     if( psz_target )
 212     {
 213         // get absolute URL from src
 214         char *psz_absurl = getAbsoluteURL(psz_target);
 215         psz_target = psz_absurl ? psz_absurl : strdup(psz_target);
 216     }
 217
 218     /* assign plugin script root class */
 219     if( (NULL != progid) && (!strcmp(progid, "VideoLAN.VLCPlugin.2")) )
 220     {
 221         /* new APIs */
 222         p_scriptClass = RuntimeNPClass<LibvlcRootNPObject>::getClass();
 223     }
 224     else
 225     {
 226         /* legacy APIs */
 227         p_scriptClass = RuntimeNPClass<VlcNPObject>::getClass();
 228     }
 229
 230     return NPERR_NO_ERROR;
 231 }
 232
 233 #if 0
 234 #ifdef XP_WIN
 235 /* This is really ugly but there is a deadlock when stopping a stream
 236  * (in VLC_CleanUp()) because the video output is a child of the drawable but
 237  * is in a different thread. */
 238 static void HackStopVout( VlcPlugin* p_plugin )
 239 {
 240     MSG msg;
 241     HWND hwnd;
 242     vlc_value_t value;
 243
 244     int i_vlc = libvlc_get_vlc_id(p_plugin->libvlc_instance);
 245     VLC_VariableGet( i_vlc, "drawable", &value );
 246
 247     hwnd = FindWindowEx( (HWND)value.i_int, 0, 0, 0 );
 248     if( !hwnd ) return;
 249
 250     PostMessage( hwnd, WM_CLOSE, 0, 0 );
 251
 252     do
 253     {
 254         while( PeekMessage( &msg, (HWND)value.i_int, 0, 0, PM_REMOVE ) )
 255         {
 256             TranslateMessage(&msg);
 257             DispatchMessage(&msg);
 258         }
 259         if( FindWindowEx( (HWND)value.i_int, 0, 0, 0 ) ) Sleep( 10 );
 260     }
 261     while( (hwnd = FindWindowEx( (HWND)value.i_int, 0, 0, 0 )) );
 262 }
 263 #endif /* XP_WIN */
 264 #endif
 265
 266 VlcPlugin::~VlcPlugin()
 267 {
 268     delete psz_baseURL;
 269     delete psz_target;
 270     if( libvlc_log )
 271         libvlc_log_close(libvlc_log, NULL);
 272     if( libvlc_instance )
 273         libvlc_release(libvlc_instance);
 274 }
 275
 276 /*****************************************************************************
 277  * VlcPlugin methods
 278  *****************************************************************************/
 279
 280 char *VlcPlugin::getAbsoluteURL(const char *url)
 281 {
 282     if( NULL != url )
 283     {
 284         // check whether URL is already absolute
 285         const char *end=strchr(url, ':');
 286         if( (NULL != end) && (end != url) )
 287         {
 288             // validate protocol header
 289             const char *start = url;
 290             char c = *start;
 291             if( isalpha(c) )
 292             {
 293                 ++start;
 294                 while( start != end )
 295                 {
 296                     c  = *start;
 297                     if( ! (isalnum(c)
 298                        || ('-' == c)
 299                        || ('+' == c)
 300                        || ('.' == c)
 301                        || ('/' == c)) ) /* VLC uses / to allow user to specify a demuxer */
 302                         // not valid protocol header, assume relative URL
 303                         goto relativeurl;
 304                     ++start;
 305                 }
 306                 /* we have a protocol header, therefore URL is absolute */
 307                 return strdup(url);
 308             }
 309             // not a valid protocol header, assume relative URL
 310         }
 311
 312 relativeurl:
 313
 314         if( psz_baseURL )
 315         {
 316             size_t baseLen = strlen(psz_baseURL);
 317             char *href = new char[baseLen+strlen(url)+1];
 318             if( href )
 319             {
 320                 /* prepend base URL */
 321                 strcpy(href, psz_baseURL);
 322
 323                 /*
 324                 ** relative url could be empty,
 325                 ** in which case return base URL
 326                 */
 327                 if( '\0' == *url )
 328                     return href;
 329
 330                 /*
 331                 ** locate pathname part of base URL
 332                 */
 333
 334                 /* skip over protocol part  */
 335                 char *pathstart = strchr(href, ':');
 336                 char *pathend;
 337                 if( pathstart )
 338                 {
 339                     if( '/' == *(++pathstart) )
 340                     {
 341                         if( '/' == *(++pathstart) )
 342                         {
 343                             ++pathstart;
 344                         }
 345                     }
 346                     /* skip over host part */
 347                     pathstart = strchr(pathstart, '/');
 348                     pathend = href+baseLen;
 349                     if( ! pathstart )
 350                     {
 351                         // no path, add a / past end of url (over '\0')
 352                         pathstart = pathend;
 353                         *pathstart = '/';
 354                     }
 355                 }
 356                 else
 357                 {
 358                     /* baseURL is just a UNIX path */
 359                     if( '/' != *href )
 360                     {
 361                         /* baseURL is not an absolute path */
 362                         return NULL;
 363                     }
 364                     pathstart = href;
 365                     pathend = href+baseLen;
 366                 }
 367
 368                 /* relative URL made of an absolute path ? */
 369                 if( '/' == *url )
 370                 {
 371                     /* replace path completely */
 372                     strcpy(pathstart, url);
 373                     return href;
 374                 }
 375
 376                 /* find last path component and replace it */
 377                 while( '/' != *pathend)
 378                     --pathend;
 379
 380                 /*
 381                 ** if relative url path starts with one or more '../',
 382                 ** factor them out of href so that we return a
 383                 ** normalized URL
 384                 */
 385                 while( pathend != pathstart )
 386                 {
 387                     const char *p = url;
 388                     if( '.' != *p )
 389                         break;
 390                     ++p;
 391                     if( '\0' == *p  )
 392                     {
 393                         /* relative url is just '.' */
 394                         url = p;
 395                         break;
 396                     }
 397                     if( '/' == *p  )
 398                     {
 399                         /* relative url starts with './' */
 400                         url = ++p;
 401                         continue;
 402                     }
 403                     if( '.' != *p )
 404                         break;
 405                     ++p;
 406                     if( '\0' == *p )
 407                     {
 408                         /* relative url is '..' */
 409                     }
 410                     else
 411                     {
 412                         if( '/' != *p )
 413                             break;
 414                         /* relative url starts with '../' */
 415                         ++p;
 416                     }
 417                     url = p;
 418                     do
 419                     {
 420                         --pathend;
 421                     }
 422                     while( '/' != *pathend );
 423                 }
 424                 /* skip over '/' separator */
 425                 ++pathend;
 426                 /* concatenate remaining base URL and relative URL */
 427                 strcpy(pathend, url);
 428             }
 429             return href;
 430         }
 431     }
 432     return NULL;
 433 }
 434
 435 #if XP_UNIX
 436 int  VlcPlugin::setSize(unsigned width, unsigned height)
 437 {
 438     int diff = (width != i_width) || (height != i_height);
 439
 440     i_width = width;
 441     i_height = height;
 442
 443     /* return size */
 444     return diff;
 445 }
 446 #endif
 447