media_list_player.c

VLC Player Source Code

/*
 * Public libvlc functions
 */

/**************************************************************************
 *         new (Public)
 **************************************************************************/
libvlc_media_list_player_t *
libvlc_media_list_player_new( libvlc_instance_t * p_instance,
                              libvlc_exception_t * p_e )
{
    (void)p_e;
    libvlc_media_list_player_t * p_mlp;
    p_mlp = malloc(sizeof(libvlc_media_list_player_t));
    if( !p_mlp )
        return NULL;

    p_mlp->current_playing_item_path = NULL;
    p_mlp->p_mi = NULL;
    p_mlp->p_mlist = NULL;
    vlc_mutex_init( &p_mlp->object_lock );
    p_mlp->p_event_manager = libvlc_event_manager_new( p_mlp,
                                                       p_instance,
                                                       p_e );
    libvlc_event_manager_register_event_type( p_mlp->p_event_manager,
            libvlc_MediaListPlayerNextItemSet, p_e );

    return p_mlp;
}

/**************************************************************************
 *         release (Public)
 **************************************************************************/
void libvlc_media_list_player_release( libvlc_media_list_player_t * p_mlp )
{
    free(p_mlp);
}

/**************************************************************************
 *        set_media_player (Public)
 **************************************************************************/
void libvlc_media_list_player_set_media_player(
                                     libvlc_media_list_player_t * p_mlp,
                                     libvlc_media_player_t * p_mi,
                                     libvlc_exception_t * p_e )
{
    VLC_UNUSED(p_e);

    vlc_mutex_lock( &p_mlp->object_lock );

    if( p_mlp->p_mi )
    {
        uninstall_media_player_observer( p_mlp );
        libvlc_media_player_release( p_mlp->p_mi );
    }
    libvlc_media_player_retain( p_mi );
    p_mlp->p_mi = p_mi;

    install_media_player_observer( p_mlp );

    vlc_mutex_unlock( &p_mlp->object_lock );
}

/**************************************************************************
 *       set_media_list (Public)
 **************************************************************************/
void libvlc_media_list_player_set_media_list(
                                     libvlc_media_list_player_t * p_mlp,
                                     libvlc_media_list_t * p_mlist,
                                     libvlc_exception_t * p_e )
{
    vlc_mutex_lock( &p_mlp->object_lock );

    if( libvlc_media_list_player_is_playing( p_mlp, p_e ) )
    {
        libvlc_media_player_stop( p_mlp->p_mi, p_e );
        /* Don't bother if there was an error. */
        libvlc_exception_clear( p_e );
    }

    if( p_mlp->p_mlist )
    {
        uninstall_playlist_observer( p_mlp );
        libvlc_media_list_release( p_mlp->p_mlist );
    }
    libvlc_media_list_retain( p_mlist );
    p_mlp->p_mlist = p_mlist;
 
    install_playlist_observer( p_mlp );

    vlc_mutex_unlock( &p_mlp->object_lock );
}

/**************************************************************************
 *        Play (Public)
 **************************************************************************/
void libvlc_media_list_player_play( libvlc_media_list_player_t * p_mlp,
                                  libvlc_exception_t * p_e )
{
    if( !p_mlp->current_playing_item_path )
    {
        libvlc_media_list_player_next( p_mlp, p_e );
        return; /* Will set to play */
    }

    libvlc_media_player_play( p_mlp->p_mi, p_e );
}


/**************************************************************************
 *        Pause (Public)
 **************************************************************************/
void libvlc_media_list_player_pause( libvlc_media_list_player_t * p_mlp,
                                     libvlc_exception_t * p_e )
{
    if( !p_mlp->p_mi )
        return;
    libvlc_media_player_pause( p_mlp->p_mi, p_e );
}

/**************************************************************************
 *        is_playing (Public)
 **************************************************************************/
int
libvlc_media_list_player_is_playing( libvlc_media_list_player_t * p_mlp,
                                     libvlc_exception_t * p_e )
{
    libvlc_state_t state = libvlc_media_player_get_state( p_mlp->p_mi, p_e );
    return (state == libvlc_Opening) || (state == libvlc_Buffering) ||
           (state == libvlc_Forward) || (state == libvlc_Backward) ||
           (state == libvlc_Playing);
}

/**************************************************************************
 *        State (Public)
 **************************************************************************/
libvlc_state_t
libvlc_media_list_player_get_state( libvlc_media_list_player_t * p_mlp,
                                    libvlc_exception_t * p_e )
{
    if( !p_mlp->p_mi )
        return libvlc_Ended;
    return libvlc_media_player_get_state( p_mlp->p_mi, p_e );
}

/**************************************************************************
 *        Play item at index (Public)
 **************************************************************************/
void libvlc_media_list_player_play_item_at_index(
                        libvlc_media_list_player_t * p_mlp,
                        int i_index,
                        libvlc_exception_t * p_e )
{
    set_current_playing_item( p_mlp, libvlc_media_list_path_with_root_index(i_index), p_e );

    if( libvlc_exception_raised( p_e ) )
        return;

    /* Send the next item event */
    libvlc_event_t event;
    event.type = libvlc_MediaListPlayerNextItemSet;
    libvlc_event_send( p_mlp->p_event_manager, &event );

    libvlc_media_player_play( p_mlp->p_mi, p_e );
}

/**************************************************************************
 *        Play item (Public)
 **************************************************************************/
void libvlc_media_list_player_play_item(
                        libvlc_media_list_player_t * p_mlp,
                        libvlc_media_t * p_md,
                        libvlc_exception_t * p_e )
{
    libvlc_media_list_path_t path = libvlc_media_list_path_of_item( p_mlp->p_mlist, p_md );
    if( !path )
    {
        libvlc_exception_raise( p_e, "No such item in media list" );
        return;
    }
    set_current_playing_item( p_mlp, path, p_e );

    if( libvlc_exception_raised( p_e ) )
        return;

    libvlc_media_player_play( p_mlp->p_mi, p_e );
}

/**************************************************************************
 *       Stop (Public)
 **************************************************************************/
void libvlc_media_list_player_stop( libvlc_media_list_player_t * p_mlp,
                                    libvlc_exception_t * p_e )
{
    if ( p_mlp->p_mi )
    {
        /* We are not interested in getting media stop event now */
        uninstall_media_player_observer( p_mlp );
        libvlc_media_player_stop( p_mlp->p_mi, p_e );
        install_media_player_observer( p_mlp );
    }

    vlc_mutex_lock( &p_mlp->object_lock );
    free( p_mlp->current_playing_item_path );
    p_mlp->current_playing_item_path = NULL;
    vlc_mutex_unlock( &p_mlp->object_lock );
}

/**************************************************************************
 *       Next (Public)
 **************************************************************************/
void libvlc_media_list_player_next( libvlc_media_list_player_t * p_mlp,
                                    libvlc_exception_t * p_e )
{
    libvlc_media_list_path_t path;

    if (! p_mlp->p_mlist )
    {
        libvlc_exception_raise( p_e, "No more element to play" );
        return;
    }

    libvlc_media_list_lock( p_mlp->p_mlist );

    path = get_next_path( p_mlp );

    if( !path )
    {
        libvlc_media_list_unlock( p_mlp->p_mlist );
        libvlc_exception_raise( p_e, "No more element to play" );
        libvlc_media_list_player_stop( p_mlp, p_e );
        return;
    }

    set_current_playing_item( p_mlp, path, p_e );

    libvlc_media_player_play( p_mlp->p_mi, p_e );

    libvlc_media_list_unlock( p_mlp->p_mlist );

    /* Send the next item event */
    libvlc_event_t event;
    event.type = libvlc_MediaListPlayerNextItemSet;
    libvlc_event_send( p_mlp->p_event_manager, &event);
}