Bug 30002 – [GStreamer] MediaPlayerPrivate::cancelLoad() can be implemented by setting state to NULL

• Component: Media
• Status: RESOLVED FIXED

[Sebastian Dröge (slomo)]

Hi,
MediaPlayerPrivate::cancelLoad() can be implemented by setting the state of playbin2 to NULL. This can be called at any time and will stop everything.

[Philippe Normand]

Created attachment 41160 [details]
proposed patch

[Gustavo Noronha (kov)]

Comment on attachment 41160 [details]
proposed patch

>  void MediaPlayerPrivate::cancelLoad()
>  {
> -    notImplemented();
> +    if (m_networkState < MediaPlayer::Loading || m_networkState == MediaPlayer::Loaded)
> +        return;
> +
> +    if (m_playBin)
> +        gst_element_set_state(m_playBin, GST_STATE_NULL);
>  }

Both Mac and Win call updateStates() here after doing their media library magics; do you know if there is a reason why we don't need it?

[Philippe Normand]

(In reply to comment #2)
> (From update of attachment 41160 [details])
> >  void MediaPlayerPrivate::cancelLoad()
> >  {
> > -    notImplemented();
> > +    if (m_networkState < MediaPlayer::Loading || m_networkState == MediaPlayer::Loaded)
> > +        return;
> > +
> > +    if (m_playBin)
> > +        gst_element_set_state(m_playBin, GST_STATE_NULL);
> >  }
> 
> Both Mac and Win call updateStates() here after doing their media library
> magics; do you know if there is a reason why we don't need it?

Hmm right. updateStates() is called when we receive the STATE_CHANGE message but we don't handle STATE_NULL there. Will send a new patch, thanks for spotting that ;)

[Gustavo Noronha (kov)]

Comment on attachment 41160 [details]
proposed patch

>  void MediaPlayerPrivate::cancelLoad()
>  {
> -    notImplemented();
> +    if (m_networkState < MediaPlayer::Loading || m_networkState == MediaPlayer::Loaded)
> +        return;
> +
> +    if (m_playBin)
> +        gst_element_set_state(m_playBin, GST_STATE_NULL);
>  }

According to further investigation by Philippe, updateStates is always called on element state transitions, so it is being done here.

[WebKit Commit Bot]

Comment on attachment 41160 [details]
proposed patch

Clearing flags on attachment: 41160

Committed r49624: <http://trac.webkit.org/changeset/49624>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.