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videoaggregator: Fix mixup of running times and segment positions

Browse source 
We have to queue buffers based on their running time, not based on
the segment position.

Also return running time from GstAggregator::get_next_time() instead of
a segment position, as required by the API.

Also only update the segment position after we pushed a buffer, otherwise
we're going to push down a segment event with the next position already.

https://bugzilla.gnome.org/show_bug.cgi?id=753196
This commit is contained in:
Sebastian Dröge 2015-09-11 12:22:51 +02:00
parent 336ca3207a
commit eb97bb0adb
1 changed files with 61 additions and 29 deletions
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90
gst-libs/gst/video/gstvideoaggregator.c
View file

@ -1063,15 +1063,16 @@ gst_videoaggregator_reset (GstVideoAggregator * vagg)
#define GST_FLOW_NEEDS_DATA GST_FLOW_CUSTOM_ERROR
static gint
gst_videoaggregator_fill_queues (GstVideoAggregator * vagg,
GstClockTime output_start_time, GstClockTime output_end_time)
GstClockTime output_start_running_time,
GstClockTime output_end_running_time)
{
GstAggregator *agg = GST_AGGREGATOR (vagg);
GList *l;
gboolean eos = TRUE;
gboolean need_more_data = FALSE;
/* get a set of buffers into pad->buffer that are within output_start_time
* and output_end_time taking into account finished and unresponsive pads */
/* get a set of buffers into pad->buffer that are within output_start_running_time
* and output_end_running_time taking into account finished and unresponsive pads */
GST_OBJECT_LOCK (vagg);
for (l = GST_ELEMENT (vagg)->sinkpads; l; l = l->next) {
@ -1112,20 +1113,20 @@ gst_videoaggregator_fill_queues (GstVideoAggregator * vagg,
start_time =
gst_segment_to_running_time (&segment, GST_FORMAT_TIME, start_time);
if (start_time >= output_end_time) {
if (start_time >= output_end_running_time) {
if (pad->buffer) {
GST_DEBUG_OBJECT (pad, "buffer duration is -1, start_time >= "
"output_end_time. Keeping previous buffer");
"output_end_running_time. Keeping previous buffer");
} else {
GST_DEBUG_OBJECT (pad, "buffer duration is -1, start_time >= "
"output_end_time. No previous buffer, need more data");
"output_end_running_time. No previous buffer, need more data");
need_more_data = TRUE;
}
gst_buffer_unref (buf);
continue;
} else if (start_time < output_start_time) {
} else if (start_time < output_start_running_time) {
GST_DEBUG_OBJECT (pad, "buffer duration is -1, start_time < "
"output_start_time. Discarding old buffer");
"output_start_running_time. Discarding old buffer");
gst_buffer_replace (&pad->buffer, buf);
pad->buffer_vinfo = *vinfo;
gst_buffer_unref (buf);
@ -1181,8 +1182,8 @@ gst_videoaggregator_fill_queues (GstVideoAggregator * vagg,
GST_TRACE_OBJECT (pad, "dealing with buffer %p start %" GST_TIME_FORMAT
" end %" GST_TIME_FORMAT " out start %" GST_TIME_FORMAT
" out end %" GST_TIME_FORMAT, buf, GST_TIME_ARGS (start_time),
GST_TIME_ARGS (end_time), GST_TIME_ARGS (output_start_time),
GST_TIME_ARGS (output_end_time));
GST_TIME_ARGS (end_time), GST_TIME_ARGS (output_start_running_time),
GST_TIME_ARGS (output_end_running_time));
if (pad->priv->end_time != -1 && pad->priv->end_time > end_time) {
GST_DEBUG_OBJECT (pad, "Buffer from the past, dropping");
@ -1191,7 +1192,8 @@ gst_videoaggregator_fill_queues (GstVideoAggregator * vagg,
continue;
}
if (end_time >= output_start_time && start_time < output_end_time) {
if (end_time >= output_start_running_time
&& start_time < output_end_running_time) {
GST_DEBUG_OBJECT (pad,
"Taking new buffer with start time %" GST_TIME_FORMAT,
GST_TIME_ARGS (start_time));
@ -1203,7 +1205,7 @@ gst_videoaggregator_fill_queues (GstVideoAggregator * vagg,
gst_buffer_unref (buf);
gst_aggregator_pad_drop_buffer (bpad);
eos = FALSE;
} else if (start_time >= output_end_time) {
} else if (start_time >= output_end_running_time) {
GST_DEBUG_OBJECT (pad, "Keeping buffer until %" GST_TIME_FORMAT,
GST_TIME_ARGS (start_time));
gst_buffer_unref (buf);
@ -1216,7 +1218,7 @@ gst_videoaggregator_fill_queues (GstVideoAggregator * vagg,
GST_DEBUG_OBJECT (pad,
"replacing old buffer with a newer buffer, start %" GST_TIME_FORMAT
" out end %" GST_TIME_FORMAT, GST_TIME_ARGS (start_time),
GST_TIME_ARGS (output_end_time));
GST_TIME_ARGS (output_end_running_time));
gst_buffer_unref (buf);
gst_aggregator_pad_drop_buffer (bpad);
@ -1231,7 +1233,7 @@ gst_videoaggregator_fill_queues (GstVideoAggregator * vagg,
}
if (pad->priv->end_time != -1) {
if (pad->priv->end_time <= output_start_time) {
if (pad->priv->end_time <= output_start_running_time) {
pad->priv->start_time = pad->priv->end_time = -1;
if (is_eos) {
GST_DEBUG ("I just need more data");
@ -1392,10 +1394,22 @@ gst_videoaggregator_do_qos (GstVideoAggregator * vagg, GstClockTime timestamp)
static GstClockTime
gst_videoaggregator_get_next_time (GstAggregator * agg)
{
if (agg->segment.position == -1)
return agg->segment.start;
GstClockTime next_time;
GST_OBJECT_LOCK (agg);
if (agg->segment.position == -1 || agg->segment.position < agg->segment.start)
next_time = agg->segment.start;
else
return agg->segment.position;
next_time = agg->segment.position;
if (agg->segment.stop != -1 && next_time > agg->segment.stop)
next_time = agg->segment.stop;
next_time =
gst_segment_to_running_time (&agg->segment, GST_FORMAT_TIME, next_time);
GST_OBJECT_UNLOCK (agg);
return next_time;
}
static GstFlowReturn
@ -1456,6 +1470,7 @@ gst_videoaggregator_aggregate (GstAggregator * agg, gboolean timeout)
{
GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg);
GstClockTime output_start_time, output_end_time;
GstClockTime output_start_running_time, output_end_running_time;
GstBuffer *outbuf = NULL;
GstFlowReturn flow_ret;
gint64 jitter;
@ -1469,31 +1484,42 @@ gst_videoaggregator_aggregate (GstAggregator * agg, gboolean timeout)
goto unlock_and_return;
}
output_start_time = gst_videoaggregator_get_next_time (agg);
output_start_time = agg->segment.position;
if (agg->segment.position == -1 || agg->segment.position < agg->segment.start)
output_start_time = agg->segment.start;
if (vagg->priv->nframes == 0) {
vagg->priv->ts_offset = output_start_time;
GST_DEBUG_OBJECT (vagg, "New ts offset %" GST_TIME_FORMAT,
GST_TIME_ARGS (output_start_time));
}
if (GST_VIDEO_INFO_FPS_N (&vagg->info) == 0)
if (GST_VIDEO_INFO_FPS_N (&vagg->info) == 0) {
output_end_time = -1;
else
} else {
output_end_time =
vagg->priv->ts_offset +
gst_util_uint64_scale_round (vagg->priv->nframes + 1,
GST_SECOND * GST_VIDEO_INFO_FPS_D (&vagg->info),
GST_VIDEO_INFO_FPS_N (&vagg->info));
}
if (agg->segment.stop != -1)
output_end_time = MIN (output_end_time, agg->segment.stop);
output_start_running_time =
gst_segment_to_running_time (&agg->segment, GST_FORMAT_TIME,
output_start_time);
output_end_running_time =
gst_segment_to_running_time (&agg->segment, GST_FORMAT_TIME,
output_end_time);
if (output_end_time == output_start_time) {
flow_ret = GST_FLOW_EOS;
} else {
flow_ret =
gst_videoaggregator_fill_queues (vagg, output_start_time,
output_end_time);
gst_videoaggregator_fill_queues (vagg, output_start_running_time,
output_end_running_time);
}
if (flow_ret == GST_FLOW_NEEDS_DATA && !timeout) {
@ -1509,8 +1535,12 @@ gst_videoaggregator_aggregate (GstAggregator * agg, gboolean timeout)
}
GST_DEBUG_OBJECT (vagg,
"Producing buffer for %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT,
GST_TIME_ARGS (output_start_time), GST_TIME_ARGS (output_end_time));
"Producing buffer for %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT
", running time start %" GST_TIME_FORMAT ", running time end %"
GST_TIME_FORMAT, GST_TIME_ARGS (output_start_time),
GST_TIME_ARGS (output_end_time),
GST_TIME_ARGS (output_start_running_time),
GST_TIME_ARGS (output_end_running_time));
jitter = gst_videoaggregator_do_qos (vagg, output_start_time);
if (jitter <= 0) {
@ -1526,8 +1556,7 @@ gst_videoaggregator_aggregate (GstAggregator * agg, gboolean timeout)
msg =
gst_message_new_qos (GST_OBJECT_CAST (vagg), vagg->priv->live,
gst_segment_to_running_time (&agg->segment, GST_FORMAT_TIME,
output_start_time), gst_segment_to_stream_time (&agg->segment,
output_start_running_time, gst_segment_to_stream_time (&agg->segment,
GST_FORMAT_TIME, output_start_time), output_start_time,
output_end_time - output_start_time);
gst_message_set_qos_values (msg, jitter, vagg->priv->proportion, 1000000);
@ -1538,9 +1567,6 @@ gst_videoaggregator_aggregate (GstAggregator * agg, gboolean timeout)
flow_ret = GST_FLOW_OK;
}
agg->segment.position = output_end_time;
vagg->priv->nframes++;
GST_VIDEO_AGGREGATOR_UNLOCK (vagg);
if (outbuf) {
GST_DEBUG_OBJECT (vagg,
@ -1550,6 +1576,12 @@ gst_videoaggregator_aggregate (GstAggregator * agg, gboolean timeout)
flow_ret = gst_aggregator_finish_buffer (agg, outbuf);
}
GST_VIDEO_AGGREGATOR_LOCK (vagg);
vagg->priv->nframes++;
agg->segment.position = output_end_time;
GST_VIDEO_AGGREGATOR_UNLOCK (vagg);
return flow_ret;
done: