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videolevels: implement intervals with continuous auto adjust

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This commit is contained in:
Joshua M. Doe 2010-04-14 07:41:13 -04:00
parent 9257139bca
commit 841b5c3f34
2 changed files with 17 additions and 12 deletions
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27
gst/gstvideolevels.c
View File

@ -228,16 +228,16 @@ gst_videolevels_class_init (GstVideoLevelsClass * object)
/* Install GObject properties */
g_object_class_install_property (obj_class, PROP_LOWIN,
g_param_spec_double ("low_in", "Lower Input Level", "Lower Input Level",
0.0, G_MAXUINT16, DEFAULT_PROP_LOWIN, G_PARAM_READWRITE));
G_MINDOUBLE, G_MAXDOUBLE, DEFAULT_PROP_LOWIN, G_PARAM_READWRITE));
g_object_class_install_property (obj_class, PROP_HIGHIN,
g_param_spec_double ("upper_in", "Upper Input Level", "Upper Input Level",
0.0, G_MAXUINT16, DEFAULT_PROP_HIGHIN, G_PARAM_READWRITE));
G_MINDOUBLE, G_MAXDOUBLE, DEFAULT_PROP_HIGHIN, G_PARAM_READWRITE));
g_object_class_install_property (obj_class, PROP_LOWOUT,
g_param_spec_double ("low_out", "Lower Output Level", "Lower Output Level",
0.0, G_MAXUINT16, DEFAULT_PROP_LOWOUT, G_PARAM_READWRITE));
G_MINDOUBLE, G_MAXDOUBLE, DEFAULT_PROP_LOWOUT, G_PARAM_READWRITE));
g_object_class_install_property (obj_class, PROP_HIGHOUT,
g_param_spec_double ("upper_out", "Upper Output Level", "Upper Output Level",
0.0, G_MAXUINT16, DEFAULT_PROP_HIGHOUT, G_PARAM_READWRITE));
G_MINDOUBLE, G_MAXDOUBLE, DEFAULT_PROP_HIGHOUT, G_PARAM_READWRITE));
g_object_class_install_property (obj_class, PROP_AUTO,
g_param_spec_int ("auto", "Auto Adjust", "Auto adjust contrast (0): off, (1): single-shot, (2): continuous",
0, 2, DEFAULT_PROP_AUTO, G_PARAM_READWRITE));
@ -311,6 +311,7 @@ gst_videolevels_set_property (GObject * object, guint prop_id,
break;
case PROP_INTERVAL:
videolevels->interval = g_value_get_uint64 (value);
videolevels->last_auto_timestamp = 0;
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@ -555,13 +556,10 @@ gst_videolevels_transform (GstBaseTransform * base, GstBuffer * inbuf,
gpointer input;
gpointer output;
gboolean ret;
guint64 elapsed;
/*
* We need to lock our videolevels params to prevent changing
* caps in the middle of a transformation (nice way to get
* segfaults)
*/
GST_OBJECT_LOCK (videolevels);
/* We need to lock our videolevels params to prevent segfaults */
GST_BASE_TRANSFORM_LOCK (videolevels);
input = GST_BUFFER_DATA (inbuf);
output = GST_BUFFER_DATA (outbuf);
@ -571,12 +569,16 @@ gst_videolevels_transform (GstBaseTransform * base, GstBuffer * inbuf,
videolevels->auto_adjust = 0;
}
else if (videolevels->auto_adjust == 2) {
gst_videolevels_auto_adjust (videolevels, input);
elapsed = GST_BUFFER_TIMESTAMP (inbuf) - videolevels->last_auto_timestamp;
if (elapsed >= videolevels->interval) {
gst_videolevels_auto_adjust (videolevels, input);
videolevels->last_auto_timestamp = GST_BUFFER_TIMESTAMP (inbuf);
}
}
ret = gst_videolevels_do_levels (videolevels, input, output);
GST_OBJECT_UNLOCK (videolevels);
GST_BASE_TRANSFORM_UNLOCK (videolevels);
if (ret)
return GST_FLOW_OK;
@ -626,6 +628,7 @@ static void gst_videolevels_reset(GstVideoLevels* videolevels)
videolevels->auto_adjust = DEFAULT_PROP_AUTO;
videolevels->interval = DEFAULT_PROP_INTERVAL;
videolevels->last_auto_timestamp = 0;
videolevels->lower_pix_sat = 0.01f;
videolevels->upper_pix_sat = 0.01f;

2
gst/gstvideolevels.h
View File

@ -75,6 +75,8 @@ struct _GstVideoLevels
gfloat upper_pix_sat;
gint nbins;
gint * histogram;
guint64 last_auto_timestamp;
};
struct _GstVideoLevelsClass