item-ext.c

video linux conference

    }
    if( p_playlist->pp_all_items[i]->input.i_id == i_id )
    {
        return p_playlist->pp_all_items[i];
    }
    return NULL;
}

playlist_item_t *playlist_LockItemGetById( playlist_t *p_playlist, int i_id)
{
    playlist_item_t *p_ret;
    vlc_mutex_lock( &p_playlist->object_lock );
    p_ret = playlist_ItemGetById( p_playlist, i_id );
    vlc_mutex_unlock( &p_playlist->object_lock );
    return p_ret;
}

/**
 * Search an item by its input_item_t
 *
 * \param p_playlist the playlist
 * \param p_item the input_item_t to find
 * \return the item, or NULL on failure
 */
playlist_item_t * playlist_ItemGetByInput( playlist_t * p_playlist ,
                                           input_item_t *p_item )
{
    int i;
    if( &p_playlist->status.p_item->input == p_item )
    {
        return p_playlist->status.p_item;
    }

    for( i =  0 ; i < p_playlist->i_size ; i++ )
    {
        if( &p_playlist->pp_items[i]->input == p_item )
        {
            return p_playlist->pp_items[i];
        }
    }
    return NULL;
}

playlist_item_t *playlist_LockItemGetByInput( playlist_t *p_playlist,
                                               input_item_t *p_item )
{
    playlist_item_t *p_ret;
    vlc_mutex_lock( &p_playlist->object_lock );
    p_ret = playlist_ItemGetByInput( p_playlist, p_item );
    vlc_mutex_unlock( &p_playlist->object_lock );
    return p_ret;
}


/***********************************************************************
 * Misc functions
 ***********************************************************************/

/**
 * Transform an item to a node
 *
 * This function must be entered without the playlist lock
 *
 * \param p_playlist the playlist object
 * \param p_item the item to transform
 * \return nothing
 */
int playlist_ItemToNode( playlist_t *p_playlist,playlist_item_t *p_item )
{
    int i = 0;
    if( p_item->i_children == -1 )
    {
        p_item->i_children = 0;
    }

    /* Remove it from the array of available items */
    for( i = 0 ; i < p_playlist->i_size ; i++ )
    {
        if( p_item == p_playlist->pp_items[i] )
        {
            REMOVE_ELEM( p_playlist->pp_items, p_playlist->i_size, i );
        }
    }
    var_SetInteger( p_playlist, "item-change", p_item->input.i_id );

    return VLC_SUCCESS;
}

int playlist_LockItemToNode( playlist_t *p_playlist, playlist_item_t *p_item )
{
    int i_ret;
    vlc_mutex_lock( &p_playlist->object_lock );
    i_ret = playlist_ItemToNode( p_playlist, p_item );
    vlc_mutex_unlock( &p_playlist->object_lock );
    return i_ret;
}

/**
 * Replaces an item with another one
 * This function must be entered without the playlist lock
 *
 * \see playlist_Replace
 */
int playlist_LockReplace( playlist_t *p_playlist,
                             playlist_item_t *p_olditem,
                             input_item_t *p_new )
{
    int i_ret;
    vlc_mutex_lock( &p_playlist->object_lock );
    i_ret = playlist_Replace( p_playlist, p_olditem, p_new );
    vlc_mutex_unlock( &p_playlist->object_lock );
    return i_ret;
}

/**
 * Replaces an item with another one
 * This function must be entered with the playlist lock:
 *
 * \param p_playlist the playlist
 * \param p_olditem the item to replace
 * \param p_new the new input_item
 * \return VLC_SUCCESS or an error
 */
int playlist_Replace( playlist_t *p_playlist, playlist_item_t *p_olditem,
                       input_item_t *p_new )
{
    int i;
    int j;

    if( p_olditem->i_children != -1 )
    {
        msg_Err( p_playlist, "playlist_Replace can only be used on leafs");
        return VLC_EGENERIC;
    }

    p_olditem->i_nb_played = 0;
    memcpy( &p_olditem->input, p_new, sizeof( input_item_t ) );

    p_olditem->i_nb_played = 0;

    for( i = 0 ; i< p_olditem->i_parents ; i++ )
    {
        playlist_item_t *p_parent = p_olditem->pp_parents[i]->p_parent;

        for( j = 0 ; j< p_parent->i_children ; i++ )
        {
            if( p_parent->pp_children[j] == p_olditem )
            {
                p_parent->i_serial++;
            }
        }
    }
    return VLC_SUCCESS;
}

/**
 * Deletes an item from a playlist.
 *
 * This function must be entered without the playlist lock
 *
 * \param p_playlist the playlist to remove from.
 * \param i_id the identifier of the item to delete
 * \return returns VLC_SUCCESS or an error
 */
int playlist_Delete( playlist_t * p_playlist, int i_id )
{
    int i, i_top, i_bottom;
    int i_pos;
    vlc_bool_t b_flag = VLC_FALSE;

    playlist_item_t *p_item = playlist_ItemGetById( p_playlist, i_id );

    if( p_item == NULL )
    {
        return VLC_EGENERIC;
    }
    if( p_item->i_children > -1 )
    {
        return playlist_NodeDelete( p_playlist, p_item, VLC_TRUE, VLC_FALSE );
    }

    var_SetInteger( p_playlist, "item-deleted", i_id );

    i_bottom = 0; i_top = p_playlist->i_all_size - 1;
    i = i_top / 2;
    while( p_playlist->pp_all_items[i]->input.i_id != i_id &&
           i_top > i_bottom )
    {
        if( p_playlist->pp_all_items[i]->input.i_id < i_id )
        {
            i_bottom = i + 1;
        }
        else
        {
            i_top = i - 1;
        }
        i = i_bottom + ( i_top - i_bottom ) / 2;
    }
    if( p_playlist->pp_all_items[i]->input.i_id == i_id )
    {
        REMOVE_ELEM( p_playlist->pp_all_items, p_playlist->i_all_size, i );
    }

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

    /* Get position and update index if needed */
    i_pos = playlist_GetPositionById( p_playlist, i_id );

    if( i_pos >= 0 && i_pos <= p_playlist->i_index )
    {
        p_playlist->i_index--;
    }

    msg_Dbg( p_playlist, "deleting playlist item `%s'",
                          p_item->input.psz_name );

    /* Remove the item from all its parent nodes */
    for ( i= 0 ; i < p_item->i_parents ; i++ )
    {
        playlist_NodeRemoveItem( p_playlist, p_item,
                                 p_item->pp_parents[i]->p_parent );
        if( p_item->pp_parents[i]->i_view == VIEW_ALL )
        {
            p_playlist->i_size--;
        }
    }

    /* TODO : Update views */

    if( b_flag == VLC_FALSE )
        playlist_ItemDelete( p_item );
    else
        p_item->i_flags |= PLAYLIST_REMOVE_FLAG;

    return VLC_SUCCESS;
}

int playlist_LockDelete( playlist_t * p_playlist, int i_id )
{
    int i_ret;
    vlc_mutex_lock( &p_playlist->object_lock );
    i_ret = playlist_Delete( p_playlist, i_id );
    vlc_mutex_unlock( &p_playlist->object_lock );
    return i_ret;
}

/**
 * Clear all playlist items
 *
 * \param p_playlist the playlist to be cleared.
 * \return returns 0
 */
int playlist_Clear( playlist_t * p_playlist )
{
    int i;
    for( i = p_playlist->i_size; i > 0 ; i-- )
    {
        playlist_Delete( p_playlist, p_playlist->pp_items[0]->input.i_id );
    }
    for( i = 0 ; i< p_playlist->i_views; i++ )
    {
        playlist_ViewEmpty( p_playlist, i, VLC_TRUE );
    }
    return VLC_SUCCESS;
}

int playlist_LockClear( playlist_t *p_playlist )
{
    int i_ret;
    vlc_mutex_lock( &p_playlist->object_lock );
    i_ret = playlist_Clear( p_playlist );
    vlc_mutex_unlock( &p_playlist->object_lock );
    return i_ret;
}


/**
 * Disables a playlist item
 *
 * \param p_playlist the playlist to disable from.
 * \param i_pos the position of the item to disable
 * \return returns 0
 */
int playlist_Disable( playlist_t * p_playlist, playlist_item_t *p_item )
{
    if( !p_item ) return VLC_EGENERIC;

    msg_Dbg( p_playlist, "disabling playlist item `%s'",
                   p_item->input.psz_name );

    if( p_item->i_flags & PLAYLIST_ENA_FLAG )
    {
        p_playlist->i_enabled--;
    }
    p_item->i_flags &= ~PLAYLIST_ENA_FLAG;

    var_SetInteger( p_playlist, "item-change", p_item->input.i_id );
    return VLC_SUCCESS;
}

/**
 * Enables a playlist item
 *
 * \param p_playlist the playlist to enable from.
 * \param i_pos the position of the item to enable
 * \return returns 0
 */
int playlist_Enable( playlist_t * p_playlist, playlist_item_t *p_item )
{
    if( !p_item ) return VLC_EGENERIC;

    msg_Dbg( p_playlist, "enabling playlist item `%s'",
                   p_item->input.psz_name );

    if( p_item->i_flags & ~PLAYLIST_ENA_FLAG )
    {
        p_playlist->i_enabled++;
    }
    p_item->i_flags |= PLAYLIST_ENA_FLAG;

    var_SetInteger( p_playlist, "item-change", p_item->input.i_id );
    return VLC_SUCCESS;
}

/**
 * Move an item in a playlist
 *
 * This function must be entered without the playlist lock
 *
 * Move the item in the playlist with position i_pos before the current item
 * at position i_newpos.
 * \param p_playlist the playlist to move items in
 * \param i_pos the position of the item to move
 * \param i_newpos the position of the item that will be behind the moved item
 *        after the move
 * \return returns VLC_SUCCESS
 */
int playlist_Move( playlist_t * p_playlist, int i_pos, int i_newpos )
{
    vlc_value_t val;
    vlc_mutex_lock( &p_playlist->object_lock );

    /* take into account that our own row disappears. */
    if( i_pos < i_newpos ) i_newpos--;

    if( i_pos >= 0 && i_newpos >=0 && i_pos <= p_playlist->i_size &&
        i_newpos <= p_playlist->i_size )
    {
        playlist_item_t * temp;

        msg_Dbg( p_playlist, "moving playlist item `%s' (%i -> %i)",
                 p_playlist->pp_items[i_pos]->input.psz_name, i_pos, i_newpos);

        if( i_pos == p_playlist->i_index )
        {
            p_playlist->i_index = i_newpos;
        }
        else if( i_pos > p_playlist->i_index &&
                 i_newpos <= p_playlist->i_index )
        {
            p_playlist->i_index++;
        }
        else if( i_pos < p_playlist->i_index &&
                 i_newpos >= p_playlist->i_index )
        {
            p_playlist->i_index--;
        }

        if ( i_pos < i_newpos )
        {
            temp = p_playlist->pp_items[i_pos];
            while ( i_pos < i_newpos )
            {
                p_playlist->pp_items[i_pos] = p_playlist->pp_items[i_pos+1];
                i_pos++;
            }
            p_playlist->pp_items[i_newpos] = temp;
        }
        else if ( i_pos > i_newpos )
        {
            temp = p_playlist->pp_items[i_pos];
            while ( i_pos > i_newpos )
            {
                p_playlist->pp_items[i_pos] = p_playlist->pp_items[i_pos-1];
                i_pos--;
            }
            p_playlist->pp_items[i_newpos] = temp;
        }
    }

    vlc_mutex_unlock( &p_playlist->object_lock );

    val.b_bool = VLC_TRUE;
    var_Set( p_playlist, "intf-change", val );

    return VLC_SUCCESS;
}

/**
 * Moves an item
 *
 * \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
 * \param i_view the view in which the move must be done or ALL_VIEWS
 * \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_view )
{
    int i;
    playlist_item_t *p_detach = NULL;
#if 0
    if( i_view == ALL_VIEWS )
    {
        for( i = 0 ; i < p_playlist->i_views; i++ )
        {
            playlist_TreeMove( p_playlist, p_item, p_node, i_newpos,
                               p_playlist->pp_views[i] );
        }
    }
#endif

    /* Find the parent */
    for( i = 0 ; i< p_item->i_parents; i++ )
    {
        if( p_item->pp_parents[i]->i_view == i_view )
        {
            p_detach = p_item->pp_parents[i]->p_parent;
            break;
        }
    }
    if( p_detach == NULL )
    {
        msg_Err( p_playlist, "item not found in view %i", i_view );
        return VLC_EGENERIC;
    }

    /* Detach from the parent */
//    playlist_NodeDetach( p_detach, p_item );

    /* Attach to new parent */

    return VLC_SUCCESS;
}