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track: Make it possible to disable the mixing feature

Browse source 
API:
  ges_track_set_mixing
  ges_track_get_mixing
This commit is contained in:
Mathieu Duponchelle 2013-06-26 23:23:59 +02:00 committed by Thibault Saunier
parent 4addde8d74
commit cc09d03253
2 changed files with 72 additions and 3 deletions
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67
ges/ges-track.c
View file

@ -67,6 +67,9 @@ struct _GESTrackPrivate
gboolean updating;
gboolean mixing;
GstElement *mixing_operation;
/* Virtual method to create GstElement that fill gaps */
GESCreateElementForGapFunc create_element_for_gaps;
};
@ -451,11 +454,16 @@ ges_track_constructed (GObject * object)
}
g_object_set (gnlobject, "expandable", TRUE, NULL);
if (self->priv->mixing) {
if (!gst_bin_add (GST_BIN (self->priv->composition), gnlobject)) {
GST_WARNING_OBJECT (self, "Could not add the mixer to our composition");
return;
}
}
self->priv->mixing_operation = gst_object_ref (gnlobject);
} else {
GST_INFO_OBJECT (self, "No way to create a main mixer");
}
@ -562,6 +570,7 @@ ges_track_init (GESTrack * self)
g_hash_table_new (g_direct_hash, g_direct_equal);
self->priv->create_element_for_gaps = NULL;
self->priv->gaps = NULL;
self->priv->mixing = TRUE;
g_signal_connect (G_OBJECT (self->priv->composition), "notify::duration",
G_CALLBACK (composition_duration_cb), self);
@ -665,6 +674,48 @@ ges_track_set_caps (GESTrack * track, const GstCaps * caps)
/* FIXME : update all trackelements ? */
}
/**
* ges_track_set_mixing:
* @track: a #GESTrack
* @mixing: TRUE if the track should be mixing, FALSE otherwise.
*
* Sets if the #GESTrack should be mixing.
*/
void
ges_track_set_mixing (GESTrack * track, gboolean mixing)
{
g_return_if_fail (GES_IS_TRACK (track));
if (!track->priv->mixing_operation) {
GST_DEBUG_OBJECT (track, "Track will be set to mixing = %d", mixing);
track->priv->mixing = mixing;
return;
}
if (mixing == track->priv->mixing) {
GST_DEBUG_OBJECT (track, "Mixing is already set to the same value");
}
if (mixing) {
if (!gst_bin_add (GST_BIN (track->priv->composition),
track->priv->mixing_operation)) {
GST_WARNING_OBJECT (track, "Could not add the mixer to our composition");
return;
}
} else {
if (!gst_bin_remove (GST_BIN (track->priv->composition),
track->priv->mixing_operation)) {
GST_WARNING_OBJECT (track,
"Could not remove the mixer from our composition");
return;
}
}
track->priv->mixing = mixing;
GST_DEBUG_OBJECT (track, "The track has been set to mixing = %d", mixing);
}
/**
* ges_track_add_element:
* @track: a #GESTrack
@ -826,6 +877,22 @@ ges_track_get_timeline (GESTrack * track)
return track->priv->timeline;
}
/**
* ges_track_get_mixing:
* @track: a #GESTrack
*
* Gets if the underlying #GnlComposition contains an expandable mixer.
*
* Returns: #True if there is a mixer, #False otherwise.
*/
gboolean
ges_track_get_mixing (GESTrack * track)
{
g_return_val_if_fail (GES_IS_TRACK (track), FALSE);
return track->priv->mixing;
}
/**
* ges_track_commit:
* @track: a #GESTrack

2
ges/ges-track.h
View file

@ -90,6 +90,8 @@ void ges_track_set_timeline (GESTrack *track, G
gboolean ges_track_add_element (GESTrack *track, GESTrackElement *object);
gboolean ges_track_remove_element (GESTrack *track, GESTrackElement *object);
void ges_track_set_create_element_for_gap_func (GESTrack *track, GESCreateElementForGapFunc func);
void ges_track_set_mixing (GESTrack *track, gboolean mixing);
gboolean ges_track_get_mixing (GESTrack *track);
/* standard methods */
GType ges_track_get_type (void);