Difference between revisions of "LibVLC Media List Management"

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Line 16: Line 16:
 
  void setup_media_list( libvlc_instance_t * p_vlc, libvlc_drawable_t window )
 
  void setup_media_list( libvlc_instance_t * p_vlc, libvlc_drawable_t window )
 
  {
 
  {
    libvlc_exception_t e;
+
 
     libvlc_media_list_t * p_ml;
+
     libvlc_media_list_t *ml;
     libvlc_media_list_player_t * p_mlp;
+
     libvlc_media_list_player_t *mlp;
     libvlc_media_player_t * p_mp;
+
     libvlc_media_player_t *mp;
     libvlc_media_descriptor_t * p_md1, *p_md2;
+
     libvlc_media_descriptor_t *md1, *md2;
 
    
 
    
     libvlc_exception_init( &e );
+
     ml = libvlc_media_list_new(vlc);
 
 
    p_ml = libvlc_media_list_new( p_vlc, &e );
 
    quit_on_exception( &e );
 
 
      
 
      
     p_md1  = libvlc_media_descriptor_new( p_vlc, "http://mycool.com/movie1.avi", &e );
+
     md1 = libvlc_media_new(vlc, "http://mycool.com/movie1.avi");
     quit_on_exception( &e );
+
     md2 = libvlc_media_new(vlc, "http://mycool.com/movie2.avi");
 
 
    p_md2  = libvlc_media_descriptor_new( p_vlc, "http://mycool.com/movie2.avi", &e );
 
    quit_on_exception( &e );
 
 
 
    libvlc_media_list_add( p_ml, p_md1, &e );
 
    quit_on_exception( &e );
 
 
    
 
    
     libvlc_media_list_add( p_ml, p_md2, &e );
+
     libvlc_media_list_add(ml, md1);
     quit_on_exception( &e );
+
     libvlc_media_list_add(ml, md2);
 
    
 
    
     libvlc_media_descriptor_release( p_md1 );
+
     libvlc_media_release(md1);
     libvlc_media_descriptor_release( p_md2 );
+
     libvlc_media_release(md2);
 
    
 
    
     p_mlp = libvlc_media_list_player_new( p_vlc, &e );
+
     p_mlp = libvlc_media_list_player_new(vlc);
    quit_on_exception( &e );
 
 
    
 
    
     p_mp = libvlc_media_player_new( p_vlc, &e );
+
     p_mp = libvlc_media_player_new(vlc);
    quit_on_exception( &e );
 
 
    
 
    
 
     /* Use our media list */
 
     /* Use our media list */
     libvlc_media_list_player_set_media_list( p_mlp, p_ml, &e );
+
     libvlc_media_list_player_set_media_list(mlp, ml);
    quit_on_exception( &e );
+
 
 
 
 
     /* Use a given media player */
 
     /* Use a given media player */
     libvlc_media_list_player_set_media_player( p_mlp, p_mp, &e );
+
     libvlc_media_list_player_set_media_player(mlp, p_mp);
    quit_on_exception( &e );
 
 
    
 
    
 
     /* Get our media instance to use our window */
 
     /* Get our media instance to use our window */
     libvlc_media_player_set_drawable( p_mlp, window, &e );
+
     libvlc_media_player_set_drawable(mlp, window);
    quit_on_exception( &e );
 
 
    
 
    
 
     /* Play */
 
     /* Play */
     libvlc_media_list_player_play( p_mlp, &e );
+
     libvlc_media_list_player_play(mlp);
    quit_on_exception( &e );
 
 
    
 
    
 
     /* Let it play forever */
 
     /* Let it play forever */
 
     while(1) sleep(300);
 
     while(1) sleep(300);
 
  }
 
  }

Revision as of 05:53, 14 December 2010

Global Description of the available objects

The atomic item that represent a media that you can play is a libvlc_media in LibVLC.

A media_list is an object that contains several libvlc_media. You can add items to that media_list.

You can play a media_list using a media_list_player.

A media descriptor can contain a media list

A playlist downloaded from Google video has a corresponding libvlc_media. This libvlc_media has several subitems. You can access them through libvlc_media_subitems() which returns a media_list.


This explains how a media_list can be hierarchical. To browse it you'll use libvlc_media_list_hierarchy_view(). To view the all the item without hierarchy use libvlc_media_list_flat_view().

Sample Code

void setup_media_list( libvlc_instance_t * p_vlc, libvlc_drawable_t window )
{
    libvlc_media_list_t *ml;
    libvlc_media_list_player_t *mlp;
    libvlc_media_player_t *mp;
    libvlc_media_descriptor_t *md1, *md2;
 
    ml = libvlc_media_list_new(vlc);
   
    md1 = libvlc_media_new(vlc, "http://mycool.com/movie1.avi");
    md2 = libvlc_media_new(vlc, "http://mycool.com/movie2.avi");
 
    libvlc_media_list_add(ml, md1);
    libvlc_media_list_add(ml, md2);
 
    libvlc_media_release(md1);
    libvlc_media_release(md2);
 
    p_mlp = libvlc_media_list_player_new(vlc);
 
    p_mp = libvlc_media_player_new(vlc);
 
    /* Use our media list */
    libvlc_media_list_player_set_media_list(mlp, ml);
    /* Use a given media player */
    libvlc_media_list_player_set_media_player(mlp, p_mp);
 
    /* Get our media instance to use our window */
    libvlc_media_player_set_drawable(mlp, window);
 
    /* Play */
    libvlc_media_list_player_play(mlp);
 
    /* Let it play forever */
    while(1) sleep(300);
}