vlc.c

VLC Player Source Code

    }                                                           \
    lua_pop( L, 1 ); /* pop a */
    TRY_META( "title", Title );
    TRY_META( "artist", Artist );
    TRY_META( "genre", Genre );
    TRY_META( "copyright", Copyright );
    TRY_META( "album", Album );
    TRY_META( "tracknum", TrackNum );
    TRY_META( "description", Description );
    TRY_META( "rating", Rating );
    TRY_META( "date", Date );
    TRY_META( "setting", Setting );
    TRY_META( "url", URL );
    TRY_META( "language", Language );
    TRY_META( "nowplaying", NowPlaying );
    TRY_META( "publisher", Publisher );
    TRY_META( "encodedby", EncodedBy );
    TRY_META( "arturl", ArtURL );
    TRY_META( "trackid", TrackID );
}

void __vlclua_read_custom_meta_data( vlc_object_t *p_this, lua_State *L,
                                     input_item_t *p_input )
{
    /* ... item */
    lua_getfield( L, -1, "meta" );
    /* ... item meta */
    if( lua_istable( L, -1 ) )
    {
        lua_pushnil( L );
        /* ... item meta nil */
        while( lua_next( L, -2 ) )
        {
            /* ... item meta key value */
            if( !lua_isstring( L, -2 ) )
            {
                msg_Warn( p_this, "Custom meta data category name must be "
                                   "a string" );
            }
            else if( !lua_istable( L, -1 ) )
            {
                msg_Warn( p_this, "Custom meta data category contents "
                                   "must be a table" );
            }
            else
            {
                const char *psz_meta_category = lua_tostring( L, -2 );
                msg_Dbg( p_this, "Found custom meta data category: %s",
                         psz_meta_category );
                lua_pushnil( L );
                /* ... item meta key value nil */
                while( lua_next( L, -2 ) )
                {
                    /* ... item meta key value key2 value2 */
                    if( !lua_isstring( L, -2 ) )
                    {
                        msg_Warn( p_this, "Custom meta category item name "
                                           "must be a string." );
                    }
                    else if( !lua_isstring( L, -1 ) )
                    {
                        msg_Warn( p_this, "Custom meta category item value "
                                           "must be a string." );
                    }
                    else
                    {
                        const char *psz_meta_name =
                            lua_tostring( L, -2 );
                        const char *psz_meta_value =
                            lua_tostring( L, -1 );
                        msg_Dbg( p_this, "Custom meta %s, %s: %s",
                                 psz_meta_category, psz_meta_name,
                                 psz_meta_value );
                        input_item_AddInfo( p_input, psz_meta_category,
                                           psz_meta_name, psz_meta_value );
                    }
                    lua_pop( L, 1 ); /* pop item */
                    /* ... item meta key value key2 */
                }
                /* ... item meta key value */
            }
            lua_pop( L, 1 ); /* pop category */
            /* ... item meta key */
        }
        /* ... item meta */
    }
    lua_pop( L, 1 ); /* pop "meta" */
    /* ... item -> back to original stack */
}

/*****************************************************************************
 * Playlist utilities
 ****************************************************************************/
/**
 * Playlist item table should be on top of the stack when this is called
 */
void __vlclua_read_options( vlc_object_t *p_this, lua_State *L,
                            int *pi_options, char ***pppsz_options )
{
    lua_getfield( L, -1, "options" );
    if( lua_istable( L, -1 ) )
    {
        lua_pushnil( L );
        while( lua_next( L, -2 ) )
        {
            if( lua_isstring( L, -1 ) )
            {
                char *psz_option = strdup( lua_tostring( L, -1 ) );
                msg_Dbg( p_this, "Option: %s", psz_option );
                INSERT_ELEM( *pppsz_options, *pi_options, *pi_options,
                             psz_option );
            }
            else
            {
                msg_Warn( p_this, "Option should be a string" );
            }
            lua_pop( L, 1 ); /* pop option */
        }
    }
    lua_pop( L, 1 ); /* pop "options" */
}

int __vlclua_playlist_add_internal( vlc_object_t *p_this, lua_State *L,
                                    playlist_t *p_playlist,
                                    input_item_t *p_parent, bool b_play )
{
    int i_count = 0;

    assert( p_parent || p_playlist );

    /* playlist */
    if( lua_istable( L, -1 ) )
    {
        lua_pushnil( L );
        /* playlist nil */
        while( lua_next( L, -2 ) )
        {
            /* playlist key item */
            /* <Parse playlist item> */
            if( lua_istable( L, -1 ) )
            {
                lua_getfield( L, -1, "path" );
                /* playlist key item path */
                if( lua_isstring( L, -1 ) )
                {
                    const char   *psz_path     = NULL;
                    const char   *psz_name     = NULL;
                    char        **ppsz_options = NULL;
                    int           i_options    = 0;
                    mtime_t       i_duration   = -1;
                    input_item_t *p_input;

                    /* Read path and name */
                    psz_path = lua_tostring( L, -1 );
                    msg_Dbg( p_this, "Path: %s", psz_path );
                    lua_getfield( L, -2, "name" );
                    /* playlist key item path name */
                    if( lua_isstring( L, -1 ) )
                    {
                        psz_name = lua_tostring( L, -1 );
                        msg_Dbg( p_this, "Name: %s", psz_name );
                    }
                    else
                    {
                        if( !lua_isnil( L, -1 ) )
                            msg_Warn( p_this, "Playlist item name should be a string." );
                        psz_name = psz_path;
                    }

                    /* Read duration */
                    lua_getfield( L, -3, "duration" );
                    /* playlist key item path name duration */
                    if( lua_isnumber( L, -1 ) )
                    {
                        i_duration = (mtime_t)(lua_tonumber( L, -1 )*1e6);
                    }
                    else if( !lua_isnil( L, -1 ) )
                    {
                        msg_Warn( p_this, "Playlist item duration should be a number (in seconds)." );
                    }
                    lua_pop( L, 1 ); /* pop "duration" */

                    /* playlist key item path name */

                    /* Read options: item must be on top of stack */
                    lua_pushvalue( L, -3 );
                    /* playlist key item path name item */
                    vlclua_read_options( p_this, L, &i_options, &ppsz_options );

                    /* Create input item */
                    p_input = input_item_NewExt( p_playlist, psz_path,
                                                psz_name, i_options,
                                                (const char **)ppsz_options,
                                                i_duration );
                    lua_pop( L, 3 ); /* pop "path name item" */
                    /* playlist key item */

                    /* Read meta data: item must be on top of stack */
                    vlclua_read_meta_data( p_this, L, p_input );

                    /* Read custom meta data: item must be on top of stack*/
                    vlclua_read_custom_meta_data( p_this, L, p_input );

                    /* Append item to playlist */
                    if( p_parent ) /* Add to node */
                        input_item_AddSubItem( p_parent, p_input );
                    else /* Play or Enqueue (preparse) */
                        /* FIXME: playlist_AddInput() can fail */
                        playlist_AddInput( p_playlist, p_input,
                               PLAYLIST_APPEND | 
                               ( b_play ? PLAYLIST_GO : PLAYLIST_PREPARSE ),
                               PLAYLIST_END, true, false );
                    i_count ++; /* increment counter */
                    vlc_gc_decref( p_input );
                    while( i_options > 0 )
                        free( ppsz_options[--i_options] );
                    free( ppsz_options );
                }
                else
                {
                    lua_pop( L, 1 ); /* pop "path" */
                    msg_Warn( p_this,
                             "Playlist item's path should be a string" );
                }
                /* playlist key item */
            }
            else
            {
                msg_Warn( p_this, "Playlist item should be a table" );
            }
            /* <Parse playlist item> */
            lua_pop( L, 1 ); /* pop the value, keep the key for
                              * the next lua_next() call */
            /* playlist key */
        }
        /* playlist */
    }
    else
    {
        msg_Warn( p_this, "Playlist should be a table." );
    }
    return i_count;
}