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Do rate control, skip frames when too old.

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Original commit message from CVS:
Do rate control, skip frames when too old.
This commit is contained in:
Wim Taymans 2003-02-11 21:31:28 +00:00
parent 5e9794a11a
commit 244658dc96
2 changed files with 28 additions and 3 deletions
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28
gst/videotestsrc/gstvideotestsrc.c
View file

@ -90,6 +90,7 @@ GST_PAD_TEMPLATE_FACTORY (videotestsrc_src_template_factory,
static void gst_videotestsrc_class_init (GstVideotestsrcClass * klass); static void gst_videotestsrc_class_init (GstVideotestsrcClass * klass);
static void gst_videotestsrc_init (GstVideotestsrc * videotestsrc); static void gst_videotestsrc_init (GstVideotestsrc * videotestsrc);
static GstElementStateReturn gst_videotestsrc_change_state (GstElement * element); static GstElementStateReturn gst_videotestsrc_change_state (GstElement * element);
static void gst_videotestsrc_set_clock (GstElement *element, GstClock *clock);
static void gst_videotestsrc_set_property (GObject * object, guint prop_id, static void gst_videotestsrc_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec); const GValue * value, GParamSpec * pspec);
@ -160,6 +161,17 @@ gst_videotestsrc_class_init (GstVideotestsrcClass * klass)
gobject_class->get_property = gst_videotestsrc_get_property; gobject_class->get_property = gst_videotestsrc_get_property;
gstelement_class->change_state = gst_videotestsrc_change_state; gstelement_class->change_state = gst_videotestsrc_change_state;
gstelement_class->set_clock = gst_videotestsrc_set_clock;
}
static void
gst_videotestsrc_set_clock (GstElement *element, GstClock *clock)
{
GstVideotestsrc *v;
v = GST_VIDEOTESTSRC (element);
gst_object_replace ((GstObject **)&v->clock, (GstObject *)clock);
} }
static GstPadLinkReturn static GstPadLinkReturn
@ -302,6 +314,7 @@ gst_videotestsrc_get (GstPad * pad)
GstVideotestsrc *videotestsrc; GstVideotestsrc *videotestsrc;
gulong newsize; gulong newsize;
GstBuffer *buf; GstBuffer *buf;
GstClockTimeDiff jitter = 0;
GST_DEBUG (0, "gst_videotestsrc_get"); GST_DEBUG (0, "gst_videotestsrc_get");
@ -325,11 +338,22 @@ gst_videotestsrc_get (GstPad * pad)
} }
g_return_val_if_fail (GST_BUFFER_DATA (buf) != NULL, NULL); g_return_val_if_fail (GST_BUFFER_DATA (buf) != NULL, NULL);
videotestsrc->make_image (videotestsrc, (void *) GST_BUFFER_DATA (buf),
videotestsrc->width, videotestsrc->height);
do {
GstClockID id;
videotestsrc->timestamp += videotestsrc->interval; videotestsrc->timestamp += videotestsrc->interval;
GST_BUFFER_TIMESTAMP (buf) = videotestsrc->timestamp; GST_BUFFER_TIMESTAMP (buf) = videotestsrc->timestamp;
videotestsrc->make_image (videotestsrc, (void *) GST_BUFFER_DATA (buf), if (videotestsrc->clock) {
videotestsrc->width, videotestsrc->height); id = gst_clock_new_single_shot_id (videotestsrc->clock, GST_BUFFER_TIMESTAMP (buf));
gst_element_clock_wait (GST_ELEMENT (videotestsrc), id, &jitter);
gst_clock_id_free (id);
}
}
while (jitter > 100 * GST_MSECOND);
return buf; return buf;
} }

1
gst/videotestsrc/gstvideotestsrc.h
View file

@ -65,6 +65,7 @@ struct _GstVideotestsrc {
gint64 interval; gint64 interval;
gint bpp; gint bpp;
int rate; int rate;
GstClock *clock;
GstBufferPool *pool; GstBufferPool *pool;