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libs/gst/base/gstbasesink.c: Don't try to report a 0 position when we don't know, return -1 and FALSE instead. This m...

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Original commit message from CVS:
* libs/gst/base/gstbasesink.c: (gst_base_sink_get_sync_times),
(gst_base_sink_do_sync), (gst_base_sink_preroll_object),
(gst_base_sink_event), (gst_base_sink_get_position_last),
(gst_base_sink_get_position_paused), (gst_base_sink_get_position),
(gst_base_sink_change_state):
Don't try to report a 0 position when we don't know, return -1 and FALSE
instead. This mostly happens when we are prerolling.
Make sure we can report the right position before we post the ASYNC_DONE
message so that a message handler can query position without races.
* tests/check/generic/sinks.c: (send_eos), (GST_START_TEST),
(async_done_handoff), (async_done_func), (send_buffer),
(async_done_eos_func), (gst_sinks_suite):
Add two tests for the above.
This commit is contained in:
Wim Taymans 2007-11-06 10:33:22 +00:00
parent 2c86c99241
commit 9e50fa303e
3 changed files with 334 additions and 32 deletions
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17
ChangeLog
View file

@ -1,3 +1,20 @@
2007-11-06 Wim Taymans <wim.taymans@gmail.com>
* libs/gst/base/gstbasesink.c: (gst_base_sink_get_sync_times),
(gst_base_sink_do_sync), (gst_base_sink_preroll_object),
(gst_base_sink_event), (gst_base_sink_get_position_last),
(gst_base_sink_get_position_paused), (gst_base_sink_get_position),
(gst_base_sink_change_state):
Don't try to report a 0 position when we don't know, return -1 and FALSE
instead. This mostly happens when we are prerolling.
Make sure we can report the right position before we post the ASYNC_DONE
message so that a message handler can query position without races.
* tests/check/generic/sinks.c: (send_eos), (GST_START_TEST),
(async_done_handoff), (async_done_func), (send_buffer),
(async_done_eos_func), (gst_sinks_suite):
Add two tests for the above.
2007-11-06 Wim Taymans <wim.taymans@gmail.com>
* MAINTAINERS:

84
libs/gst/base/gstbasesink.c
View file

@ -1274,7 +1274,8 @@ async_failed:
static gboolean
gst_base_sink_get_sync_times (GstBaseSink * basesink, GstMiniObject * obj,
GstClockTime * rsstart, GstClockTime * rsstop,
GstClockTime * rrstart, GstClockTime * rrstop, gboolean * do_sync)
GstClockTime * rrstart, GstClockTime * rrstop, gboolean * do_sync,
GstSegment * segment)
{
GstBaseSinkClass *bclass;
GstBuffer *buffer;
@ -1283,7 +1284,9 @@ gst_base_sink_get_sync_times (GstBaseSink * basesink, GstMiniObject * obj,
gint64 rstart, rstop; /* clipped timestamps converted to running time */
GstClockTime sstart, sstop; /* clipped timestamps converted to stream time */
GstFormat format;
GstSegment *segment;
GstBaseSinkPrivate *priv;
priv = basesink->priv;
/* start with nothing */
start = stop = sstart = sstop = rstart = rstop = -1;
@ -1294,8 +1297,8 @@ gst_base_sink_get_sync_times (GstBaseSink * basesink, GstMiniObject * obj,
switch (GST_EVENT_TYPE (event)) {
/* EOS event needs syncing */
case GST_EVENT_EOS:
sstart = sstop = basesink->priv->current_sstop;
rstart = rstop = basesink->priv->eos_rtime;
sstart = sstop = priv->current_sstop;
rstart = rstop = priv->eos_rtime;
*do_sync = rstart != -1;
GST_DEBUG_OBJECT (basesink, "sync times for EOS %" GST_TIME_FORMAT,
GST_TIME_ARGS (rstart));
@ -1332,7 +1335,6 @@ gst_base_sink_get_sync_times (GstBaseSink * basesink, GstMiniObject * obj,
GST_TIME_ARGS (stop), *do_sync);
/* collect segment and format for code clarity */
segment = &basesink->segment;
format = segment->format;
/* no timestamp clipping if we did not * get a TIME segment format */
@ -1605,17 +1607,20 @@ gst_base_sink_do_sync (GstBaseSink * basesink, GstPad * pad,
GstClockTimeDiff jitter;
gboolean syncable;
GstClockReturn status = GST_CLOCK_OK;
GstClockTime sstart, sstop, rstart, rstop;
GstClockTime rstart, rstop, sstart, sstop;
gboolean do_sync;
GstBaseSinkPrivate *priv;
priv = basesink->priv;
sstart = sstop = rstart = rstop = -1;
do_sync = TRUE;
basesink->priv->current_rstart = -1;
priv->current_rstart = -1;
/* update timing information for this object */
/* get timing information for this object against the render segment */
syncable = gst_base_sink_get_sync_times (basesink, obj,
&sstart, &sstop, &rstart, &rstop, &do_sync);
&sstart, &sstop, &rstart, &rstop, &do_sync, &basesink->segment);
/* a syncable object needs to participate in preroll and
* clocking. All buffers and EOS are syncable. */
@ -1623,17 +1628,10 @@ gst_base_sink_do_sync (GstBaseSink * basesink, GstPad * pad,
goto not_syncable;
/* store timing info for current object */
basesink->priv->current_rstart = rstart;
basesink->priv->current_rstop = (rstop != -1 ? rstop : rstart);
priv->current_rstart = rstart;
priv->current_rstop = (rstop != -1 ? rstop : rstart);
/* save sync time for eos when the previous object needed sync */
basesink->priv->eos_rtime = (do_sync ? basesink->priv->current_rstop : -1);
/* lock because we read this when answering the POSITION
* query. */
GST_OBJECT_LOCK (basesink);
basesink->priv->current_sstart = sstart;
basesink->priv->current_sstop = (sstop != -1 ? sstop : sstart);
GST_OBJECT_UNLOCK (basesink);
priv->eos_rtime = (do_sync ? priv->current_rstop : -1);
again:
/* first do preroll, this makes sure we commit our state
@ -1658,6 +1656,13 @@ again:
}
}
/* After rendering we store the position of the last buffer so that we can use
* it to report the position. We need to take the lock here. */
GST_OBJECT_LOCK (basesink);
priv->current_sstart = sstart;
priv->current_sstop = (sstop != -1 ? sstop : sstart);
GST_OBJECT_UNLOCK (basesink);
if (!do_sync)
goto done;
@ -1687,7 +1692,7 @@ again:
}
/* successful syncing done, record observation */
basesink->priv->current_jitter = jitter;
priv->current_jitter = jitter;
/* check if the object should be dropped */
*late = gst_base_sink_is_too_late (basesink, obj, rstart, rstop,
@ -2111,11 +2116,13 @@ gst_base_sink_preroll_object (GstBaseSink * basesink, GstPad * pad,
if (G_LIKELY (GST_IS_BUFFER (obj))) {
GstBaseSinkClass *bclass;
GstBuffer *buf;
GstClockTime timestamp;
buf = GST_BUFFER_CAST (obj);
timestamp = GST_BUFFER_TIMESTAMP (buf);
GST_DEBUG_OBJECT (basesink, "preroll buffer %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
GST_TIME_ARGS (timestamp));
gst_base_sink_set_last_buffer (basesink, buf);
@ -2394,6 +2401,7 @@ gst_base_sink_event (GstPad * pad, GstEvent * event)
gst_segment_init (basesink->abidata.ABI.clip_segment,
GST_FORMAT_UNDEFINED);
basesink->have_newsegment = FALSE;
/* for position reporting */
GST_OBJECT_LOCK (basesink);
basesink->priv->current_sstart = -1;
@ -2965,16 +2973,19 @@ gst_base_sink_get_position_last (GstBaseSink * basesink, gint64 * cur)
{
/* return last observed stream time */
*cur = basesink->priv->current_sstop;
GST_DEBUG_OBJECT (basesink, "POSITION: %" GST_TIME_FORMAT,
GST_TIME_ARGS (*cur));
return TRUE;
}
/* get the position when we are PAUSED */
/* FIXME, not entirely correct if we have preroll_queue_len > 1 and
* there are multiple segments in the queue since we calculate on the
* total segments, not the first one. */
/* get the position when we are PAUSED, this is the stream time of the buffer
* that prerolled. If no buffer is prerolled (we are still flushing), this
* value will be -1. */
static gboolean
gst_base_sink_get_position_paused (GstBaseSink * basesink, gint64 * cur)
{
gboolean res;
*cur = basesink->priv->current_sstart;
if (*cur != -1)
@ -2982,7 +2993,11 @@ gst_base_sink_get_position_paused (GstBaseSink * basesink, gint64 * cur)
else
*cur = basesink->abidata.ABI.clip_segment->time;
return TRUE;
res = (*cur != -1);
GST_DEBUG_OBJECT (basesink, "POSITION: %" GST_TIME_FORMAT,
GST_TIME_ARGS (*cur));
return res;
}
static gboolean
@ -3094,12 +3109,14 @@ done:
/* special cases */
in_eos:
{
GST_DEBUG_OBJECT (basesink, "position in EOS");
res = gst_base_sink_get_position_last (basesink, cur);
GST_OBJECT_UNLOCK (basesink);
goto done;
}
in_pause:
{
GST_DEBUG_OBJECT (basesink, "position in PAUSED");
res = gst_base_sink_get_position_paused (basesink, cur);
GST_OBJECT_UNLOCK (basesink);
goto done;
@ -3107,8 +3124,9 @@ in_pause:
wrong_state:
{
/* in NULL or READY we always return 0 */
res = TRUE;
*cur = 0;
GST_DEBUG_OBJECT (basesink, "position in wrong state, return -1");
res = FALSE;
*cur = -1;
GST_OBJECT_UNLOCK (basesink);
goto done;
}
@ -3118,6 +3136,8 @@ no_sync:
* that upstream can answer */
if ((*cur = basesink->priv->current_sstart) != -1)
res = TRUE;
GST_DEBUG_OBJECT (basesink, "no sync, res %d, POSITION %" GST_TIME_FORMAT,
res, GST_TIME_ARGS (*cur));
GST_OBJECT_UNLOCK (basesink);
return res;
}
@ -3218,8 +3238,8 @@ gst_base_sink_change_state (GstElement * element, GstStateChange transition)
basesink->have_preroll = FALSE;
basesink->need_preroll = TRUE;
basesink->playing_async = TRUE;
priv->current_sstart = 0;
priv->current_sstop = 0;
priv->current_sstart = -1;
priv->current_sstop = -1;
priv->eos_rtime = -1;
priv->latency = 0;
basesink->eos = FALSE;
@ -3362,8 +3382,8 @@ gst_base_sink_change_state (GstElement * element, GstStateChange transition)
} else {
GST_DEBUG_OBJECT (basesink, "PAUSED to READY, don't need_preroll");
}
priv->current_sstart = 0;
priv->current_sstop = 0;
priv->current_sstart = -1;
priv->current_sstop = -1;
priv->have_latency = FALSE;
gst_base_sink_set_last_buffer (basesink, NULL);
GST_PAD_PREROLL_UNLOCK (basesink->sinkpad);

265
tests/check/generic/sinks.c
View file

@ -975,6 +975,269 @@ GST_START_TEST (test_fake_eos)
GST_END_TEST;
/* this variable is updated in the same thread, first it is set by the
* handoff-preroll signal, then it is checked when the ASYNC_DONE is posted on
* the bus */
static gboolean have_preroll = FALSE;
static void
async_done_handoff (GstElement * element, GstBuffer * buf, GstPad * pad,
GstElement * sink)
{
GST_DEBUG ("we have the preroll buffer");
have_preroll = TRUE;
}
/* when we get the ASYNC_DONE, query the position */
static GstBusSyncReply
async_done_func (GstBus * bus, GstMessage * msg, GstElement * sink)
{
if (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_ASYNC_DONE) {
GstFormat format;
gint64 position;
GST_DEBUG ("we have ASYNC_DONE now");
fail_unless (have_preroll == TRUE, "no preroll buffer received");
/* get the position now */
format = GST_FORMAT_TIME;
gst_element_query_position (sink, &format, &position);
GST_DEBUG ("we have position %" GST_TIME_FORMAT, GST_TIME_ARGS (position));
fail_unless (position == 10 * GST_SECOND, "position is wrong");
}
/* we can drop the message, nothing is listening for it. */
return GST_BUS_DROP;
}
static void
send_buffer (GstPad * sinkpad)
{
GstBuffer *buffer;
GstStateChangeReturn ret;
/* push a second buffer */
GST_DEBUG ("pushing last buffer");
buffer = gst_buffer_new_and_alloc (10);
GST_BUFFER_TIMESTAMP (buffer) = 200 * GST_SECOND;
GST_BUFFER_DURATION (buffer) = 100 * GST_SECOND;
/* this function will initially block */
ret = gst_pad_chain (sinkpad, buffer);
fail_unless (ret == GST_FLOW_OK, "no OK flow return");
}
/* when we get the ASYNC_DONE message from a sink, we want the sink to be able
* to report the duration and position. The sink should also have called the
* render method. */
GST_START_TEST (test_async_done)
{
GstElement *sink;
GstBuffer *buffer;
GstEvent *event;
GstStateChangeReturn ret;
GstPad *sinkpad;
GstFlowReturn res;
GstBus *bus;
GThread *thread;
GstFormat format;
gint64 position;
gboolean qret;
sink = gst_element_factory_make ("fakesink", "sink");
g_object_set (G_OBJECT (sink), "sync", TRUE, NULL);
g_object_set (G_OBJECT (sink), "preroll-queue-len", 2, NULL);
g_object_set (G_OBJECT (sink), "signal-handoffs", TRUE, NULL);
g_signal_connect (sink, "preroll-handoff", (GCallback) async_done_handoff,
sink);
sinkpad = gst_element_get_pad (sink, "sink");
ret = gst_element_set_state (sink, GST_STATE_PAUSED);
fail_unless (ret == GST_STATE_CHANGE_ASYNC, "no ASYNC state return");
/* set bus on element synchronously listen for ASYNC_DONE */
bus = gst_bus_new ();
gst_element_set_bus (sink, bus);
gst_bus_set_sync_handler (bus, (GstBusSyncHandler) async_done_func, sink);
/* make newsegment, this sets the position to 10sec when the buffer prerolls */
GST_DEBUG ("sending segment");
event =
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, 0, -1,
10 * GST_SECOND);
res = gst_pad_send_event (sinkpad, event);
/* We have not yet received any buffers so we are still in the READY state,
* the position is therefore still not queryable. */
format = GST_FORMAT_TIME;
position = -1;
qret = gst_element_query_position (sink, &format, &position);
fail_unless (qret == FALSE, "position wrong");
fail_unless (position == -1, "position is wrong");
/* Since we are paused and the preroll queue has a length of 2, this function
* will return immediatly, the preroll handoff will be called and the stream
* position should now be 10 seconds. */
GST_DEBUG ("pushing first buffer");
buffer = gst_buffer_new_and_alloc (10);
GST_BUFFER_TIMESTAMP (buffer) = 1 * GST_SECOND;
GST_BUFFER_DURATION (buffer) = 100 * GST_SECOND;
res = gst_pad_chain (sinkpad, buffer);
fail_unless (res == GST_FLOW_OK, "no OK flow return");
/* scond buffer, will not block either but position should still be 10
* seconds */
GST_DEBUG ("pushing second buffer");
buffer = gst_buffer_new_and_alloc (10);
GST_BUFFER_TIMESTAMP (buffer) = 100 * GST_SECOND;
GST_BUFFER_DURATION (buffer) = 100 * GST_SECOND;
res = gst_pad_chain (sinkpad, buffer);
fail_unless (res == GST_FLOW_OK, "no OK flow return");
/* check if position is still 10 seconds */
format = GST_FORMAT_TIME;
gst_element_query_position (sink, &format, &position);
GST_DEBUG ("first buffer position %" GST_TIME_FORMAT,
GST_TIME_ARGS (position));
fail_unless (position == 10 * GST_SECOND, "position is wrong");
/* last buffer, blocks because preroll queue is filled. Start the push in a
* new thread so that we can check the position */
GST_DEBUG ("starting thread");
thread = g_thread_create ((GThreadFunc) send_buffer, sinkpad, TRUE, NULL);
fail_if (thread == NULL, "no thread");
GST_DEBUG ("waiting 1 second");
g_usleep (G_USEC_PER_SEC);
GST_DEBUG ("waiting done");
/* check if position is still 10 seconds. This is racy because the above
* thread might not yet have started the push, because of the above sleep,
* this is very unlikely, though. */
format = GST_FORMAT_TIME;
gst_element_query_position (sink, &format, &position);
GST_DEBUG ("second buffer position %" GST_TIME_FORMAT,
GST_TIME_ARGS (position));
fail_unless (position == 10 * GST_SECOND, "position is wrong");
/* now we go to playing. This should unlock and stop the above thread. */
GST_DEBUG ("going to PLAYING");
ret = gst_element_set_state (sink, GST_STATE_PLAYING);
/* join the thread. At this point we know the sink processed the last buffer
* and the position should now be 210 seconds; the time of the last buffer we
* pushed */
GST_DEBUG ("joining thread");
g_thread_join (thread);
format = GST_FORMAT_TIME;
gst_element_query_position (sink, &format, &position);
GST_DEBUG ("last buffer position %" GST_TIME_FORMAT,
GST_TIME_ARGS (position));
fail_unless (position == 210 * GST_SECOND, "position is wrong");
gst_object_unref (sinkpad);
gst_element_set_state (sink, GST_STATE_NULL);
gst_object_unref (sink);
gst_object_unref (bus);
}
GST_END_TEST;
/* when we get the ASYNC_DONE, query the position */
static GstBusSyncReply
async_done_eos_func (GstBus * bus, GstMessage * msg, GstElement * sink)
{
if (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_ASYNC_DONE) {
GstFormat format;
gint64 position;
GST_DEBUG ("we have ASYNC_DONE now");
/* get the position now */
format = GST_FORMAT_TIME;
gst_element_query_position (sink, &format, &position);
GST_DEBUG ("we have position %" GST_TIME_FORMAT, GST_TIME_ARGS (position));
fail_unless (position == 10 * GST_SECOND, "position is wrong");
}
/* we can drop the message, nothing is listening for it. */
return GST_BUS_DROP;
}
/* when we get the ASYNC_DONE message from a sink, we want the sink to be able
* to report the duration and position. The sink should also have called the
* render method. */
GST_START_TEST (test_async_done_eos)
{
GstElement *sink;
GstEvent *event;
GstStateChangeReturn ret;
GstPad *sinkpad;
gboolean res;
GstBus *bus;
GstFormat format;
gint64 position;
gboolean qret;
sink = gst_element_factory_make ("fakesink", "sink");
g_object_set (G_OBJECT (sink), "sync", TRUE, NULL);
g_object_set (G_OBJECT (sink), "preroll-queue-len", 1, NULL);
sinkpad = gst_element_get_pad (sink, "sink");
ret = gst_element_set_state (sink, GST_STATE_PAUSED);
fail_unless (ret == GST_STATE_CHANGE_ASYNC, "no ASYNC state return");
/* set bus on element synchronously listen for ASYNC_DONE */
bus = gst_bus_new ();
gst_element_set_bus (sink, bus);
gst_bus_set_sync_handler (bus, (GstBusSyncHandler) async_done_eos_func, sink);
/* make newsegment, this sets the position to 10sec when the buffer prerolls */
GST_DEBUG ("sending segment");
event =
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, 0, -1,
10 * GST_SECOND);
res = gst_pad_send_event (sinkpad, event);
/* We have not yet received any buffers so we are still in the READY state,
* the position is therefore still not queryable. */
format = GST_FORMAT_TIME;
position = -1;
qret = gst_element_query_position (sink, &format, &position);
fail_unless (qret == FALSE, "position wrong");
fail_unless (position == -1, "position is wrong");
/* Since we are paused and the preroll queue has a length of 1, this function
* will return immediatly. The EOS will complete the preroll and the
* position should now be 10 seconds. */
GST_DEBUG ("pushing EOS");
event = gst_event_new_eos ();
res = gst_pad_send_event (sinkpad, event);
fail_unless (res == TRUE, "no TRUE return");
/* check if position is still 10 seconds */
format = GST_FORMAT_TIME;
gst_element_query_position (sink, &format, &position);
GST_DEBUG ("EOS position %" GST_TIME_FORMAT, GST_TIME_ARGS (position));
fail_unless (position == 10 * GST_SECOND, "position is wrong");
gst_object_unref (sinkpad);
gst_element_set_state (sink, GST_STATE_NULL);
gst_object_unref (sink);
gst_object_unref (bus);
}
GST_END_TEST;
/* test: try changing state of sinks */
Suite *
gst_sinks_suite (void)
@ -1002,6 +1265,8 @@ gst_sinks_suite (void)
tcase_add_test (tc_chain, test_add_live2);
tcase_add_test (tc_chain, test_bin_live);
tcase_add_test (tc_chain, test_fake_eos);
tcase_add_test (tc_chain, test_async_done);
tcase_add_test (tc_chain, test_async_done_eos);
return s;
}