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gst/gstsegment.c: Added some more docs.

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Original commit message from CVS:
* gst/gstsegment.c:
Added some more docs.
* libs/gst/base/gstbasesink.c: (gst_base_sink_perform_qos),
(gst_base_sink_reset_qos):
Calculate more accurate rate values.
This commit is contained in:
Wim Taymans 2006-04-10 10:46:44 +00:00
parent 78ee95a508
commit c2d86926f5
3 changed files with 41 additions and 20 deletions
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9
ChangeLog
View file

@ -1,3 +1,12 @@
2006-04-10 Wim Taymans <wim@fluendo.com>
* gst/gstsegment.c:
Added some more docs.
* libs/gst/base/gstbasesink.c: (gst_base_sink_perform_qos),
(gst_base_sink_reset_qos):
Calculate more accurate rate values.
2006-04-09 Sebastien Moutte <sebastien@moutte.net>
* gst/gst_private.h:

8
gst/gstsegment.c
View file

@ -412,14 +412,18 @@ gst_segment_set_newsegment (GstSegment * segment, gboolean update, gdouble rate,
* @position: the position in the segment
*
* Translate @position to stream time using the currently configured
* segment.
* segment. The @position value must be between @segment start and
* stop value.
*
* This function is typically used by elements that need to operate on
* the stream time of the buffers it receives, such as effect plugins.
* In those use cases, @position is typically the buffer timestamp that
* one wants to convert to the stream time.
* The stream time is always between 0 and the total duration of the
* media stream.
*
* Returns: the position in stream_time.
* Returns: the position in stream_time or -1 when an invalid position
* was given.
*/
gint64
gst_segment_to_stream_time (GstSegment * segment, GstFormat format,

30
libs/gst/base/gstbasesink.c
View file

@ -1215,11 +1215,15 @@ gst_base_sink_perform_qos (GstBaseSink * sink, gboolean dropped)
/* if we have the time when the last buffer left us, calculate
* processing time */
if (priv->last_left != -1 && entered > priv->last_left) {
if (priv->last_left != -1) {
if (entered > priv->last_left) {
pt = entered - priv->last_left;
} else {
pt = 0;
}
} else {
pt = priv->avg_pt;
}
GST_CAT_DEBUG_OBJECT (GST_CAT_QOS, sink, "start: %" GST_TIME_FORMAT
", entered %" GST_TIME_FORMAT ", left %" GST_TIME_FORMAT ", pt: %"
@ -1233,9 +1237,6 @@ gst_base_sink_perform_qos (GstBaseSink * sink, gboolean dropped)
GST_TIME_ARGS (priv->avg_duration), GST_TIME_ARGS (priv->avg_pt),
priv->avg_rate);
/* record when this buffer will leave us */
priv->last_left = left;
/* collect running averages. for first observations, we copy the
* values */
if (priv->avg_duration == -1)
@ -1253,12 +1254,18 @@ gst_base_sink_perform_qos (GstBaseSink * sink, gboolean dropped)
gst_guint64_to_gdouble (priv->avg_pt) /
gst_guint64_to_gdouble (priv->avg_duration);
else
rate = 1.0;
rate = 0.0;
if (priv->last_left != -1) {
if (dropped || priv->avg_rate < 0.0) {
priv->avg_rate = rate;
} else {
if (rate > 1.0)
priv->avg_rate = UPDATE_RUNNING_AVG_N (priv->avg_rate, rate);
else
priv->avg_rate = UPDATE_RUNNING_AVG_P (priv->avg_rate, rate);
}
}
GST_CAT_DEBUG_OBJECT (GST_CAT_QOS, sink,
"updated: avg_duration: %" GST_TIME_FORMAT ", avg_pt: %" GST_TIME_FORMAT
@ -1266,13 +1273,14 @@ gst_base_sink_perform_qos (GstBaseSink * sink, gboolean dropped)
GST_TIME_ARGS (priv->avg_pt), priv->avg_rate);
if (dropped) {
priv->avg_rate = 2.0;
}
/* always send QoS events */
/* if we have a valid rate, start sending QoS messages */
if (priv->avg_rate >= 0.0) {
gst_base_sink_send_qos (sink, priv->avg_rate, priv->current_rstart,
priv->current_jitter);
}
/* record when this buffer will leave us */
priv->last_left = left;
}
/* reset all qos measuring */
@ -1287,7 +1295,7 @@ gst_base_sink_reset_qos (GstBaseSink * sink)
priv->last_left = -1;
priv->avg_duration = -1;
priv->avg_pt = -1;
priv->avg_rate = 1.0;
priv->avg_rate = -1.0;
priv->avg_render = -1;
priv->rendered = 0;
priv->dropped = 0;