item.c

VLC Player Source Code

        PL_UNLOCK_IF( !b_locked );
        return p_item_in_category;
    }
    else
    {
        ChangeToNode( p_playlist, p_item );
        PL_UNLOCK_IF( !b_locked );
        return p_item;
    }
}

/**
 * Find an item within a root, given its input id.
 *
 * \param p_playlist the playlist object
 * \param i_input_id id of the input
 * \param p_root root playlist item
 * \param b_items_only TRUE if we want the item himself
 * \return the first found item, or NULL if not found
 */
playlist_item_t *playlist_ItemFindFromInputAndRoot( playlist_t *p_playlist,
                                                    int i_input_id,
                                                    playlist_item_t *p_root,
                                                    bool b_items_only )
{
    int i;
    for( i = 0 ; i< p_root->i_children ; i++ )
    {
        if( ( b_items_only ? p_root->pp_children[i]->i_children == -1 : 1 ) &&
            p_root->pp_children[i]->p_input->i_id == i_input_id )
        {
            return p_root->pp_children[i];
        }
        else if( p_root->pp_children[i]->i_children >= 0 )
        {
            playlist_item_t *p_search =
                 playlist_ItemFindFromInputAndRoot( p_playlist, i_input_id,
                                                    p_root->pp_children[i],
                                                    b_items_only );
            if( p_search ) return p_search;
        }
    }
    return NULL;
}


static int TreeMove( playlist_t *p_playlist, playlist_item_t *p_item,
                     playlist_item_t *p_node, int i_newpos )
{
    int j;
    playlist_item_t *p_detach = p_item->p_parent;
    (void)p_playlist;

    if( p_node->i_children == -1 ) return VLC_EGENERIC;

    for( j = 0; j < p_detach->i_children; j++ )
    {
         if( p_detach->pp_children[j] == p_item ) break;
    }
    REMOVE_ELEM( p_detach->pp_children, p_detach->i_children, j );

    /* If j < i_newpos, we are moving the element from the top to the
     * down of the playlist. So when removing the element we change have
     * to change the position as we loose one element
     */
    if( j < i_newpos )
        i_newpos--;

    /* Attach to new parent */
    INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
    p_item->p_parent = p_node;

    return VLC_SUCCESS;
}

/**
 * Moves an item
 *
 * This function must be entered with the playlist lock
 *
 * \param p_playlist the playlist
 * \param p_item the item to move
 * \param p_node the new parent of the item
 * \param i_newpos the new position under this new parent
 * \return VLC_SUCCESS or an error
 */
int playlist_TreeMove( playlist_t * p_playlist, playlist_item_t *p_item,
                       playlist_item_t *p_node, int i_newpos )
{
    int i_ret;
    PL_ASSERT_LOCKED;

    /* Drop on a top level node. Move in the two trees */
    if( p_node->p_parent == p_playlist->p_root_category ||
        p_node->p_parent == p_playlist->p_root_onelevel )
    {
        /* Fixme: avoid useless lookups but we need some clean helpers */
        {
            /* Fixme: if we try to move a node on a top-level node, it will
             * fail because the node doesn't exist in onelevel and we will
             * do some shit in onelevel. We should recursively move all items
             * within the node */
            playlist_item_t *p_node_onelevel;
            playlist_item_t *p_item_onelevel;
            p_node_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
                                                p_node->p_input->i_id,
                                                p_playlist->p_root_onelevel,
                                                false );
            p_item_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
                                                p_item->p_input->i_id,
                                                p_playlist->p_root_onelevel,
                                                false );
            if( p_node_onelevel && p_item_onelevel )
                TreeMove( p_playlist, p_item_onelevel, p_node_onelevel, i_newpos );
        }
        {
            playlist_item_t *p_node_category;
            playlist_item_t *p_item_category;
            p_node_category = playlist_ItemFindFromInputAndRoot( p_playlist,
                                                p_node->p_input->i_id,
                                                p_playlist->p_root_category,
                                                false );
            p_item_category = playlist_ItemFindFromInputAndRoot( p_playlist,
                                                p_item->p_input->i_id,
                                                p_playlist->p_root_category,
                                                false );
            if( p_node_category && p_item_category )
                TreeMove( p_playlist, p_item_category, p_node_category, 0 );
        }
        i_ret = VLC_SUCCESS;
    }
    else
        i_ret = TreeMove( p_playlist, p_item, p_node, i_newpos );
    p_playlist->b_reset_currently_playing = true;
    vlc_object_signal_unlocked( p_playlist );
    return i_ret;
}

/**
 * Send a notification that an item has been added to a node
 *
 * \param p_playlist the playlist object
 * \param i_item_id id of the item added
 * \param i_node_id id of the node in wich the item was added
 * \param b_signal TRUE if the function must send a signal
 * \return nothing
 */
void playlist_SendAddNotify( playlist_t *p_playlist, int i_item_id,
                             int i_node_id, bool b_signal )
{
    vlc_value_t val;
    PL_ASSERT_LOCKED;

    playlist_add_t *p_add = (playlist_add_t *)malloc( sizeof( playlist_add_t) );
    if( !p_add )
        return;

    p_add->i_item = i_item_id;
    p_add->i_node = i_node_id;
    val.p_address = p_add;
    p_playlist->b_reset_currently_playing = true;
    if( b_signal )
        vlc_object_signal_unlocked( p_playlist );

    var_Set( p_playlist, "item-append", val );
    free( p_add );
}

/*****************************************************************************
 * Playlist item accessors
 *****************************************************************************/

/**
 * Set the name of a playlist item
 *
 * \param p_item the item
 * \param psz_name the name
 * \return VLC_SUCCESS or VLC_EGENERIC
 */
int playlist_ItemSetName( playlist_item_t *p_item, const char *psz_name )
{
    if( psz_name && p_item )
    {
        input_item_SetName( p_item->p_input, psz_name );
        return VLC_SUCCESS;
    }
    return VLC_EGENERIC;
}

/***************************************************************************
 * The following functions are local
 ***************************************************************************/

/* Enqueue an item for preparsing, and play it, if needed */
static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
                           playlist_item_t *p_item_cat,
                           playlist_item_t *p_item_one )
{
    PL_ASSERT_LOCKED;
    if( (i_mode & PLAYLIST_GO ) )
    {
        playlist_item_t *p_parent = p_item_one;
        playlist_item_t *p_toplay = NULL;
        while( p_parent )
        {
            if( p_parent == p_playlist->p_root_category )
            {
                p_toplay = p_item_cat; break;
            }
            else if( p_parent == p_playlist->p_root_onelevel )
            {
                p_toplay = p_item_one; break;
            }
            p_parent = p_parent->p_parent;
        }
        assert( p_toplay );
        p_playlist->request.b_request = true;
        p_playlist->request.i_skip = 0;
        p_playlist->request.p_item = p_toplay;
        if( p_playlist->p_input )
            input_StopThread( p_playlist->p_input );
        p_playlist->request.i_status = PLAYLIST_RUNNING;
        vlc_object_signal_unlocked( p_playlist );
    }
    /* Preparse if PREPARSE or SPREPARSE & not enough meta */
    char *psz_artist = input_item_GetArtist( p_item_cat->p_input );
    char *psz_album = input_item_GetAlbum( p_item_cat->p_input );
    if( p_playlist->b_auto_preparse &&
          (i_mode & PLAYLIST_PREPARSE ||
          ( i_mode & PLAYLIST_SPREPARSE &&
            ( EMPTY_STR( psz_artist ) || ( EMPTY_STR( psz_album ) ) )
          ) ) )
        playlist_PreparseEnqueue( p_playlist, p_item_cat->p_input );
    /* If we already have it, signal it */
    else if( !EMPTY_STR( psz_artist ) && !EMPTY_STR( psz_album ) )
        input_item_SetPreparsed( p_item_cat->p_input, true );
    free( psz_artist );
    free( psz_album );
}

/* Add the playlist item to the requested node and fire a notification */
static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
                     playlist_item_t *p_node, int i_mode, int i_pos )
{
    PL_ASSERT_LOCKED;
    ARRAY_APPEND(p_playlist->items, p_item);
    ARRAY_APPEND(p_playlist->all_items, p_item);

    if( i_pos == PLAYLIST_END )
        playlist_NodeAppend( p_playlist, p_item, p_node );
    else
        playlist_NodeInsert( p_playlist, p_item, p_node, i_pos );

    if( !p_playlist->b_doing_ml )
        playlist_SendAddNotify( p_playlist, p_item->i_id, p_node->i_id,
                                 !( i_mode & PLAYLIST_NO_REBUILD ) );
}

/* Actually convert an item to a node */
static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item )
{
    int i;
    if( p_item->i_children == -1 )
        p_item->i_children = 0;

    /* Remove it from the array of available items */
    ARRAY_BSEARCH( p_playlist->items,->i_id, int, p_item->i_id, i );
    if( i != -1 )
        ARRAY_REMOVE( p_playlist->items, i );
}

/* Do the actual removal */
static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
                        bool b_stop )
{
    int i;
    int i_id = p_item->i_id;
    PL_ASSERT_LOCKED;

    if( p_item->i_children > -1 )
    {
        return playlist_NodeDelete( p_playlist, p_item, true, false );
    }
    p_playlist->b_reset_currently_playing = true;
    var_SetInteger( p_playlist, "item-deleted", i_id );

    /* Remove the item from the bank */
    ARRAY_BSEARCH( p_playlist->all_items,->i_id, int, i_id, i );
    if( i != -1 )
        ARRAY_REMOVE( p_playlist->all_items, i );

    ARRAY_BSEARCH( p_playlist->items,->i_id, int, i_id, i );
    if( i != -1 )
        ARRAY_REMOVE( p_playlist->items, i );

    /* Check if it is the current item */
    if( get_current_status_item( p_playlist ) == p_item )
    {
        /* Hack we don't call playlist_Control for lock reasons */
        if( b_stop )
        {
            p_playlist->request.i_status = PLAYLIST_STOPPED;
            p_playlist->request.b_request = true;
            p_playlist->request.p_item = NULL;
            msg_Info( p_playlist, "stopping playback" );
            vlc_object_signal_unlocked( VLC_OBJECT(p_playlist) );
        }
    }

    PL_DEBUG( "deleting item `%s'", p_item->p_input->psz_name );

    /* Remove the item from its parent */
    playlist_NodeRemoveItem( p_playlist, p_item, p_item->p_parent );

    playlist_ItemRelease( p_item );

    return VLC_SUCCESS;
}