libvisual-devel

[Libvisual-devel] New song event

[Eelco S. <ee...@sc...>]

Hi,

I just started playing around with libvisual in an attempt to get the hang of 
it. So far there's been one thing I haven't gotten to work; detectig a new 
song.
To spot a new song I figured that the events function would be the best place 
for this. Check the event queue and see if there's a VISUAL_EVENT_NEWSONG 
type in the queue. However, nothing happens (tested it with amarok and xmms), 
there is no event indicating a new song started playing. What could be the 
problem? Is this a libvisual problem or isn't it implemented in the player(s)?
I've pasted the events function below for reference.

Kind regards,
Eelco Schijf

Btw, as you can see there's also the VISUAL_EVENT_RESIZE event, which works 
fine.

int liquidmp3_events (VisPluginData *plugin, VisEventQueue *events)
{
 VisEvent ev;
 VisSongInfo *songinfo;
 
 // retrieve songinfo
 songinfo = visual_plugin_actor_get_songinfo( VISUAL_PLUGIN_ACTOR 
(visual_plugin_get_specific(plugin)) );

 while (visual_event_queue_poll (events, &ev)) {
  switch (ev.type) {
   case VISUAL_EVENT_RESIZE:
    liquidmp3_dimension (plugin, ev.resize.video,
      ev.resize.width, ev.resize.height);
    break;
    
   case VISUAL_EVENT_NEWSONG:
    printf( New song detected (%s)", songinfo->song );
    break;
   
   default: // to avoid warnings
    break;
  }
 }

 return 0;
}

Re: [Libvisual-devel] New song event

[Dennis S. <sy...@yo...>]

On Sun, 2005-02-27 at 18:01 +0100, Eelco Schijf wrote:
> Hi,
> 
> I just started playing around with libvisual in an attempt to get the hang of 
> it. So far there's been one thing I haven't gotten to work; detectig a new 
> song.
> To spot a new song I figured that the events function would be the best place 
> for this. Check the event queue and see if there's a VISUAL_EVENT_NEWSONG 
> type in the queue. However, nothing happens (tested it with amarok and xmms), 
> there is no event indicating a new song started playing. What could be the 
> problem? Is this a libvisual problem or isn't it implemented in the player(s)?
> I've pasted the events function below for reference.

Amarok does not support this but beep-media-player and xmms should work
fine.

> Btw, as you can see there's also the VISUAL_EVENT_RESIZE event, which works 
> fine.
> 
> int liquidmp3_events (VisPluginData *plugin, VisEventQueue *events)
> {
>  VisEvent ev;
>  VisSongInfo *songinfo;
>  
>  // retrieve songinfo
>  songinfo = visual_plugin_actor_get_songinfo( VISUAL_PLUGIN_ACTOR 
> (visual_plugin_get_specific(plugin)) );
> 
>  while (visual_event_queue_poll (events, &ev)) {
>   switch (ev.type) {
>    case VISUAL_EVENT_RESIZE:
>     liquidmp3_dimension (plugin, ev.resize.video,
>       ev.resize.width, ev.resize.height);
>     break;
>     
>    case VISUAL_EVENT_NEWSONG:
>     printf( New song detected (%s)", songinfo->song );
>     break;
>    
>    default: // to avoid warnings
>     break;
>   }
>  }
> 
>  return 0;
> }
> 

This should actually work, tho I advice you to retrieve the VisSongInfo 
from the VisEvent.

struct _VisEventNewSong {
        VisObject        object;        /**< The VisObject data. */
        VisEventType     type;          /**< Event type of the event
being emitted. */
        VisSongInfo     *songinfo;      /**< Pointer to the VisSongInfo
structure containing all the information about
                                         * the new song. */
};

so that would end up in being "event.newsong.songinfo;".

Tho this does not explain why it's not detecting new songs, could
you send me your code so I can have a try with it :)

Good luck,
Dennis