sd.c 13.1 KB
Newer Older
1 2 3
/*****************************************************************************
 * sd.c: Services discovery related functions
 *****************************************************************************
4
 * Copyright (C) 2007-2008 the VideoLAN team
5 6 7
 * $Id$
 *
 * Authors: Antoine Cellerier <dionoea at videolan tod org>
8
 *          Fabio Ritrovato <sephiroth87 at videolan dot org>
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
#ifndef  _GNU_SOURCE
#   define  _GNU_SOURCE
#endif

32 33 34 35
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

36
#include <vlc_common.h>
37 38
#include <vlc_services_discovery.h>
#include <vlc_playlist.h>
39
#include <vlc_charset.h>
40
#include <vlc_md5.h>
41

42 43
#include "../vlc.h"
#include "../libs.h"
44

45

46
/*** Input item ***/
47

48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83
#define vlclua_item_luareg( a ) \
{ "set_" # a, vlclua_item_set_ ## a },

#define vlclua_item_meta( lowercase, normal ) \
static int vlclua_item_set_ ## lowercase ( lua_State *L )\
{\
    services_discovery_t *p_sd = (services_discovery_t *)vlclua_get_this( L );\
    input_item_t **pp_node = (input_item_t **)luaL_checkudata( L, 1, "input_item_t" );\
    if( *pp_node )\
    {\
        if( lua_isstring( L, -1 ) )\
        {\
            input_item_Set ## normal ( *pp_node, lua_tostring( L, -1 ) );\
        } else\
            msg_Err( p_sd, "Error parsing set_ " # lowercase " arguments" );\
    }\
    return 1;\
}

vlclua_item_meta(title, Title)
vlclua_item_meta(artist, Artist)
vlclua_item_meta(genre, Genre)
vlclua_item_meta(copyright, Copyright)
vlclua_item_meta(album, Album)
vlclua_item_meta(tracknum, TrackNum)
vlclua_item_meta(description, Description)
vlclua_item_meta(rating, Rating)
vlclua_item_meta(date, Date)
vlclua_item_meta(setting, Setting)
vlclua_item_meta(url, URL)
vlclua_item_meta(language, Language)
vlclua_item_meta(nowplaying, NowPlaying)
vlclua_item_meta(publisher, Publisher)
vlclua_item_meta(encodedby, EncodedBy)
vlclua_item_meta(arturl, ArtworkURL)
vlclua_item_meta(trackid, TrackID)
84
vlclua_item_meta(tracktotal, TrackTotal)
85 86 87 88 89
vlclua_item_meta(director, Director)
vlclua_item_meta(season, Season)
vlclua_item_meta(episode, Episode)
vlclua_item_meta(showname, ShowName)
vlclua_item_meta(actors, Actors)
90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108

static const luaL_Reg vlclua_item_reg[] = {
    vlclua_item_luareg(title)
    vlclua_item_luareg(artist)
    vlclua_item_luareg(genre)
    vlclua_item_luareg(copyright)
    vlclua_item_luareg(album)
    vlclua_item_luareg(tracknum)
    vlclua_item_luareg(description)
    vlclua_item_luareg(rating)
    vlclua_item_luareg(date)
    vlclua_item_luareg(setting)
    vlclua_item_luareg(url)
    vlclua_item_luareg(language)
    vlclua_item_luareg(nowplaying)
    vlclua_item_luareg(publisher)
    vlclua_item_luareg(encodedby)
    vlclua_item_luareg(arturl)
    vlclua_item_luareg(trackid)
109
    vlclua_item_luareg(tracktotal)
110 111 112 113 114
    vlclua_item_luareg(director)
    vlclua_item_luareg(season)
    vlclua_item_luareg(episode)
    vlclua_item_luareg(showname)
    vlclua_item_luareg(actors)
115 116 117
    { NULL, NULL }
};

118 119 120 121 122 123 124 125
static input_item_t *vlclua_sd_create_item( services_discovery_t *p_sd,
                                            lua_State *L )
{
    if( !lua_istable( L, -1 ) )
    {
        msg_Err( p_sd, "Error: argument must be table" );
        return NULL;
    }
126

127 128 129
    lua_getfield( L, -1, "path" );
    if( !lua_isstring( L, -1 ) )
    {
130
        msg_Err( p_sd, "Error: \"%s\" parameter is required", "path" );
131 132
        return NULL;
    }
133

134 135 136 137 138 139 140 141 142
    const char *psz_path = lua_tostring( L, -1 );

    lua_getfield( L, -2, "title" );

    const char *psz_title = luaL_checkstring( L, -1 )
       ? luaL_checkstring( L, -1 )
       : psz_path;

    input_item_t *p_input = input_item_New( psz_path, psz_title );
143 144
    lua_pop( L, 2 );

145 146 147 148 149 150 151 152
    if( unlikely(p_input == NULL) )
        return NULL;

    /* The table must be at the top of the stack when calling
     * vlclua_read_options() */
    char **ppsz_options = NULL;
    int i_options = 0;

153
    lua_pushvalue( L, -1 );
154
    vlclua_read_options( p_sd, L, &i_options, &ppsz_options );
155
    lua_pop( L, 1 );
156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177

    input_item_AddOptions( p_input, i_options, (const char **)ppsz_options,
                           VLC_INPUT_OPTION_TRUSTED );
    while( i_options > 0 )
        free( ppsz_options[--i_options] );
    free( ppsz_options );

    vlclua_read_meta_data( p_sd, L, p_input );
    /* This one is to be tested... */
    vlclua_read_custom_meta_data( p_sd, L, p_input );
    /* The duration is given in seconds, convert to microseconds */

    lua_getfield( L, -1, "duration" );
    if( lua_isnumber( L, -1 ) )
        input_item_SetDuration( p_input, (lua_tonumber( L, -1 )*1e6) );
    else if( !lua_isnil( L, -1 ) )
        msg_Warn( p_sd, "Item duration should be a number (in seconds)." );
    lua_pop( L, 1 );

    /* string to build the input item uid */
    lua_getfield( L, -1, "uiddata" );
    if( lua_isstring( L, -1 ) )
178
    {
179 180
        char *s = strdup( luaL_checkstring( L, -1 ) );
        if ( s )
181
        {
182 183 184 185 186 187 188 189 190 191 192 193
            struct md5_s md5;
            InitMD5( &md5 );
            AddMD5( &md5, s, strlen( s ) );
            EndMD5( &md5 );
            free( s );
            s = psz_md5_hash( &md5 );
            if ( s )
                 input_item_AddInfo( p_input, "uid", "md5", "%s", s );
            free( s );
        }
    }
    lua_pop( L, 1 );
194

195 196
    input_item_t **udata = lua_newuserdata( L, sizeof( input_item_t * ) );
    *udata = p_input;
197

198 199 200 201 202 203 204 205 206
    if( luaL_newmetatable( L, "input_item_t" ) )
    {
        lua_newtable( L );
        luaL_register( L, NULL, vlclua_item_reg );
        lua_setfield( L, -2, "__index" );
        lua_pushliteral( L, "none of your business" );
        lua_setfield( L, -2, "__metatable" );
    }
    lua_setmetatable( L, -2 );
207

208 209
    return p_input;
}
210 211


212 213 214 215 216 217 218 219 220 221 222 223 224 225 226
/*** Input item tree node ***/

static int vlclua_node_add_subitem( lua_State *L )
{
    services_discovery_t *p_sd = (services_discovery_t *)vlclua_get_this( L );

    input_item_t **pp_node = (input_item_t **)luaL_checkudata( L, 1, "node" );
    if( *pp_node == NULL )
        return 1;

    input_item_t *p_input = vlclua_sd_create_item( p_sd, L );
    if( p_input != NULL )
    {
        input_item_PostSubItem( *pp_node, p_input );
        input_item_Release( p_input );
227
    }
228 229
    return 1;
}
230

231 232
static const luaL_Reg vlclua_node_reg[];

233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282
static input_item_t *vlclua_sd_create_node( services_discovery_t *p_sd,
                                            lua_State *L )
{
    if( !lua_istable( L, -1 ) )
    {
        msg_Err( p_sd, "Error: argument must be table" );
        return NULL;
    }

    lua_getfield( L, -1, "title" );
    if( !lua_isstring( L, -1 ) )
    {
        msg_Err( p_sd, "Error: \"%s\" parameter is required", "title" );
        return NULL;
    }

    const char *psz_name = lua_tostring( L, -1 );
    input_item_t *p_input = input_item_NewExt( "vlc://nop", psz_name, -1,
                                               ITEM_TYPE_NODE,
                                               ITEM_NET_UNKNOWN );
    lua_pop( L, 1 );

    if( unlikely(p_input == NULL) )
        return NULL;

    lua_getfield( L, -1, "arturl" );
    if( lua_isstring( L, -1 ) && strcmp( lua_tostring( L, -1 ), "" ) )
    {
        char *psz_value = strdup( lua_tostring( L, -1 ) );
        EnsureUTF8( psz_value );
        msg_Dbg( p_sd, "ArtURL: %s", psz_value );
        /* TODO: ask for art download if not local file */
        input_item_SetArtURL( p_input, psz_value );
        free( psz_value );
    }
    lua_pop( L, 1 );

    input_item_t **udata = lua_newuserdata( L, sizeof( input_item_t * ) );
    *udata = p_input;
    if( luaL_newmetatable( L, "node" ) )
    {
        lua_newtable( L );
        luaL_register( L, NULL, vlclua_node_reg );
        lua_setfield( L, -2, "__index" );
    }
    lua_setmetatable( L, -2 );

    return p_input;
}

283
static int vlclua_node_add_subnode( lua_State *L )
284 285
{
    services_discovery_t *p_sd = (services_discovery_t *)vlclua_get_this( L );
286

287
    input_item_t **pp_node = (input_item_t **)luaL_checkudata( L, 1, "node" );
288 289 290 291 292 293 294
    if( *pp_node == NULL )
        return 1;

    input_item_t *p_input = vlclua_sd_create_node( p_sd, L );
    if( p_input != NULL )
        input_item_PostSubItem( *pp_node, p_input );

295 296 297
    return 1;
}

298 299 300 301 302 303 304 305 306
static const luaL_Reg vlclua_node_reg[] = {
    { "add_subitem", vlclua_node_add_subitem },
    { "add_subnode", vlclua_node_add_subnode },
    { NULL, NULL }
};


/*** Services discovery instance ***/

307 308
static int vlclua_sd_add_common( services_discovery_t *p_sd, lua_State *L,
                                 input_item_t *p_input )
309
{
310 311
    if( p_input == NULL )
        return 1;
312

313 314 315
    lua_getfield( L, -2, "category" );
    if( lua_isstring( L, -1 ) )
        services_discovery_AddItem( p_sd, p_input, luaL_checkstring( L, -1 ) );
316
    else
317 318 319 320
        services_discovery_AddItem( p_sd, p_input, NULL );
    lua_pop( L, 1 );

    input_item_Release( p_input );
321 322 323
    return 1;
}

324 325 326 327 328 329 330 331
static int vlclua_sd_add_item( lua_State *L )
{
    services_discovery_t *p_sd = (services_discovery_t *)vlclua_get_this( L );
    input_item_t *p_input = vlclua_sd_create_item( p_sd, L );

    return vlclua_sd_add_common( p_sd, L, p_input );
}

332 333 334
static int vlclua_sd_add_node( lua_State *L )
{
    services_discovery_t *p_sd = (services_discovery_t *)vlclua_get_this( L );
335 336 337
    input_item_t *p_input = vlclua_sd_create_node( p_sd, L );

    return vlclua_sd_add_common( p_sd, L, p_input );
338 339
}

340 341 342
static int vlclua_sd_remove_item( lua_State *L )
{
    services_discovery_t *p_sd = (services_discovery_t *)vlclua_get_this( L );
343
    if( !lua_isnil( L, 1 ) )
344
    {
345
        input_item_t **pp_input = luaL_checkudata( L, 1, "input_item_t" );
346 347
        if( *pp_input )
            services_discovery_RemoveItem( p_sd, *pp_input );
348 349
        /* Make sure we won't try to remove it again */
        *pp_input = NULL;
350 351 352 353
    }
    return 1;
}

354 355 356 357 358 359 360 361 362 363 364 365 366 367
static int vlclua_sd_remove_node( lua_State *L )
{
    services_discovery_t *p_sd = (services_discovery_t *)vlclua_get_this( L );
    if( !lua_isnil( L, 1 ) )
    {
        input_item_t **pp_input = luaL_checkudata( L, 1, "node" );
        if( *pp_input )
            services_discovery_RemoveItem( p_sd, *pp_input );
        /* Make sure we won't try to remove it again */
        *pp_input = NULL;
    }
    return 1;
}

368 369 370 371 372 373 374
static const luaL_Reg vlclua_sd_sd_reg[] = {
    { "add_item", vlclua_sd_add_item },
    { "add_node", vlclua_sd_add_node },
    { "remove_item", vlclua_sd_remove_item },
    { "remove_node", vlclua_sd_remove_node },
    { NULL, NULL }
};
375

376
void luaopen_sd_sd( lua_State *L )
377
{
378 379 380 381
    lua_newtable( L );
    luaL_register( L, NULL, vlclua_sd_sd_reg );
    lua_setfield( L, -2, "sd" );
}
382 383


384
/*** SD management (for user interfaces) ***/
385

386 387 388 389 390 391 392
static int vlclua_sd_get_services_names( lua_State *L )
{
    playlist_t *p_playlist = vlclua_get_playlist_internal( L );
    char **ppsz_longnames;
    char **ppsz_names = vlc_sd_GetNames( p_playlist, &ppsz_longnames, NULL );
    if( !ppsz_names )
        return 0;
393

394 395 396 397 398 399 400 401 402 403
    char **ppsz_longname = ppsz_longnames;
    char **ppsz_name = ppsz_names;
    lua_settop( L, 0 );
    lua_newtable( L );
    for( ; *ppsz_name; ppsz_name++,ppsz_longname++ )
    {
        lua_pushstring( L, *ppsz_longname );
        lua_setfield( L, -2, *ppsz_name );
        free( *ppsz_name );
        free( *ppsz_longname );
404
    }
405 406
    free( ppsz_names );
    free( ppsz_longnames );
407 408 409
    return 1;
}

410
static int vlclua_sd_add( lua_State *L )
411
{
412 413 414 415
    const char *psz_sd = luaL_checkstring( L, 1 );
    playlist_t *p_playlist = vlclua_get_playlist_internal( L );
    int i_ret = playlist_ServicesDiscoveryAdd( p_playlist, psz_sd );
    return vlclua_push_ret( L, i_ret );
416 417
}

418 419 420 421 422 423 424
static int vlclua_sd_remove( lua_State *L )
{
    const char *psz_sd = luaL_checkstring( L, 1 );
    playlist_t *p_playlist = vlclua_get_playlist_internal( L );
    int i_ret = playlist_ServicesDiscoveryRemove( p_playlist, psz_sd );
    return vlclua_push_ret( L, i_ret );
}
425

426
static int vlclua_sd_is_loaded( lua_State *L )
427
{
428 429 430 431
    const char *psz_sd = luaL_checkstring( L, 1 );
    playlist_t *p_playlist = vlclua_get_playlist_internal( L );
    lua_pushboolean( L, playlist_IsServicesDiscoveryLoaded( p_playlist, psz_sd ));
    return 1;
432 433 434 435 436 437 438 439 440 441 442
}

static const luaL_Reg vlclua_sd_intf_reg[] = {
    { "get_services_names", vlclua_sd_get_services_names },
    { "add", vlclua_sd_add },
    { "remove", vlclua_sd_remove },
    { "is_loaded", vlclua_sd_is_loaded },
    { NULL, NULL }
};

void luaopen_sd_intf( lua_State *L )
443 444
{
    lua_newtable( L );
445
    luaL_register( L, NULL, vlclua_sd_intf_reg );
446 447
    lua_setfield( L, -2, "sd" );
}