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check/states/sinks.c: Added some more checks. Specifically the case where NO_PREROLL elements are in the pipeline.

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Original commit message from CVS:
* check/states/sinks.c: (GST_START_TEST), (gst_object_suite):
Added some more checks. Specifically the case where NO_PREROLL
elements are in the pipeline.

* gst/base/gstbasesink.c: (gst_base_sink_commit_state),
(gst_base_sink_handle_object), (gst_base_sink_do_sync),
(gst_base_sink_get_position):
Post READY->PAUSED state change messages too.
Fix bug where VOID was posted as pending state...

* gst/gstbin.c: (gst_bin_recalc_state):
use _element_continue_state() to continue the state change.

* gst/gstelement.c: (gst_element_continue_state),
(gst_element_commit_state), (gst_element_set_state_func),
(gst_element_change_state), (gst_element_change_state_func):
Lots of state change cleanups, assign the STATE_RETURN in
a new continue_state() function that also propagates the
last return value from a state change to the app.
Update some debug statements with proper category.
This commit is contained in:
Wim Taymans 2005-11-03 17:12:00 +00:00
parent c4abf79f02
commit 43fe0b06e9
7 changed files with 321 additions and 58 deletions
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23
ChangeLog
View file

@ -1,3 +1,26 @@
2005-11-03 Wim Taymans <wim@fluendo.com>
* check/states/sinks.c: (GST_START_TEST), (gst_object_suite):
Added some more checks. Specifically the case where NO_PREROLL
elements are in the pipeline.
* gst/base/gstbasesink.c: (gst_base_sink_commit_state),
(gst_base_sink_handle_object), (gst_base_sink_do_sync),
(gst_base_sink_get_position):
Post READY->PAUSED state change messages too.
Fix bug where VOID was posted as pending state...
* gst/gstbin.c: (gst_bin_recalc_state):
use _element_continue_state() to continue the state change.
* gst/gstelement.c: (gst_element_continue_state),
(gst_element_commit_state), (gst_element_set_state_func),
(gst_element_change_state), (gst_element_change_state_func):
Lots of state change cleanups, assign the STATE_RETURN in
a new continue_state() function that also propagates the
last return value from a state change to the app.
Update some debug statements with proper category.
2005-11-03 Wim Taymans <wim@fluendo.com>
* docs/design/part-events.txt:

115
check/states/sinks.c
View file

@ -181,8 +181,11 @@ GST_START_TEST (test_livesrc_remove)
}
GST_END_TEST
/* a sink should go ASYNC to PAUSE. PAUSE does not complete
* since we have a live source. */
/* the sink should go ASYNC to PAUSE. The live source should go
* NO_PREROLL to PAUSE. the pipeline returns NO_PREROLL. An
* attempt to go to PLAYING will return ASYNC. polling state
* completion should return SUCCESS when the sink is gone to
* PLAYING. */
GST_START_TEST (test_livesrc_sink)
{
GstElement *sink, *src, *pipeline;
@ -208,6 +211,10 @@ GST_START_TEST (test_livesrc_sink)
fail_unless (ret == GST_STATE_CHANGE_NO_PREROLL,
"no no_preroll state return");
ret = gst_element_set_state (pipeline, GST_STATE_PAUSED);
fail_unless (ret == GST_STATE_CHANGE_NO_PREROLL,
"no no_preroll state return the second time");
ret = gst_element_get_state (src, &current, &pending, GST_CLOCK_TIME_NONE);
fail_unless (ret == GST_STATE_CHANGE_NO_PREROLL, "not paused");
fail_unless (current == GST_STATE_PAUSED, "not paused");
@ -236,6 +243,108 @@ GST_START_TEST (test_livesrc_sink)
GST_END_TEST;
/* The sink should go ASYNC to PLAYING. The source should go
* to PLAYING with SUCCESS. The pipeline returns ASYNC. */
GST_START_TEST (test_livesrc2_sink)
{
GstElement *sink, *src, *pipeline;
GstStateChangeReturn ret;
GstState current, pending;
GstPad *srcpad, *sinkpad;
pipeline = gst_pipeline_new ("pipeline");
src = gst_element_factory_make ("fakesrc", "src");
g_object_set (G_OBJECT (src), "is-live", TRUE, NULL);
sink = gst_element_factory_make ("fakesink", "sink");
gst_bin_add (GST_BIN (pipeline), src);
gst_bin_add (GST_BIN (pipeline), sink);
srcpad = gst_element_get_pad (src, "src");
sinkpad = gst_element_get_pad (sink, "sink");
gst_pad_link (srcpad, sinkpad);
gst_object_unref (srcpad);
gst_object_unref (sinkpad);
ret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
fail_unless (ret == GST_STATE_CHANGE_ASYNC, "no async state return");
ret = gst_element_get_state (src, &current, &pending, GST_CLOCK_TIME_NONE);
fail_unless (ret == GST_STATE_CHANGE_SUCCESS, "not playing");
fail_unless (current == GST_STATE_PLAYING, "not playing");
fail_unless (pending == GST_STATE_VOID_PENDING, "not playing");
ret =
gst_element_get_state (pipeline, &current, &pending, GST_CLOCK_TIME_NONE);
fail_unless (ret == GST_STATE_CHANGE_SUCCESS, "not playing");
fail_unless (current == GST_STATE_PLAYING, "not playing");
fail_unless (pending == GST_STATE_VOID_PENDING, "not playing");
/* and back down */
ret = gst_element_set_state (pipeline, GST_STATE_PAUSED);
fail_unless (ret == GST_STATE_CHANGE_NO_PREROLL,
"no no_preroll state return");
ret = gst_element_get_state (src, &current, &pending, GST_CLOCK_TIME_NONE);
fail_unless (ret == GST_STATE_CHANGE_NO_PREROLL, "not no_preroll");
fail_unless (current == GST_STATE_PAUSED, "not paused");
fail_unless (pending == GST_STATE_VOID_PENDING, "not paused");
/* sink state is not known.. it might be prerolled or not */
/* and to READY */
ret = gst_element_set_state (pipeline, GST_STATE_READY);
fail_unless (ret == GST_STATE_CHANGE_SUCCESS, "no success state return");
ret = gst_element_get_state (src, &current, &pending, GST_CLOCK_TIME_NONE);
fail_unless (ret == GST_STATE_CHANGE_SUCCESS, "not success");
fail_unless (current == GST_STATE_READY, "not ready");
fail_unless (pending == GST_STATE_VOID_PENDING, "not ready");
ret = gst_element_get_state (sink, &current, &pending, GST_CLOCK_TIME_NONE);
fail_unless (ret == GST_STATE_CHANGE_SUCCESS, "not success");
fail_unless (current == GST_STATE_READY, "not ready");
fail_unless (pending == GST_STATE_VOID_PENDING, "not ready");
}
GST_END_TEST;
GST_START_TEST (test_livesrc3_sink)
{
GstElement *sink, *src, *pipeline;
GstStateChangeReturn ret;
GstState current, pending;
GstPad *srcpad, *sinkpad;
pipeline = gst_pipeline_new ("pipeline");
src = gst_element_factory_make ("fakesrc", "src");
g_object_set (G_OBJECT (src), "is-live", TRUE, NULL);
sink = gst_element_factory_make ("fakesink", "sink");
gst_bin_add (GST_BIN (pipeline), src);
gst_bin_add (GST_BIN (pipeline), sink);
srcpad = gst_element_get_pad (src, "src");
sinkpad = gst_element_get_pad (sink, "sink");
gst_pad_link (srcpad, sinkpad);
gst_object_unref (srcpad);
gst_object_unref (sinkpad);
ret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
fail_unless (ret == GST_STATE_CHANGE_ASYNC, "no async state return");
ret =
gst_element_get_state (pipeline, &current, &pending, GST_CLOCK_TIME_NONE);
fail_unless (ret == GST_STATE_CHANGE_SUCCESS, "not playing");
fail_unless (current == GST_STATE_PLAYING, "not playing");
fail_unless (pending == GST_STATE_VOID_PENDING, "not playing");
/* and back down */
ret = gst_element_set_state (pipeline, GST_STATE_NULL);
fail_unless (ret == GST_STATE_CHANGE_SUCCESS, "no success state return");
}
GST_END_TEST;
/* test: try changing state of sinks */
Suite *
@ -250,6 +359,8 @@ gst_object_suite (void)
tcase_add_test (tc_chain, test_src_sink);
tcase_add_test (tc_chain, test_livesrc_remove);
tcase_add_test (tc_chain, test_livesrc_sink);
tcase_add_test (tc_chain, test_livesrc2_sink);
tcase_add_test (tc_chain, test_livesrc3_sink);
return s;
}

5
gst/base/gstbasesink.c
View file

@ -462,6 +462,9 @@ gst_base_sink_commit_state (GstBaseSink * basesink)
case GST_STATE_PLAYING:
basesink->need_preroll = FALSE;
post_playing = TRUE;
/* post PAUSED too when we were READY */
if (current == GST_STATE_READY)
post_paused = TRUE;
break;
case GST_STATE_PAUSED:
basesink->need_preroll = TRUE;
@ -478,8 +481,6 @@ gst_base_sink_commit_state (GstBaseSink * basesink)
GST_STATE_NEXT (basesink) = GST_STATE_VOID_PENDING;
GST_STATE_PENDING (basesink) = GST_STATE_VOID_PENDING;
GST_STATE_RETURN (basesink) = GST_STATE_CHANGE_SUCCESS;
pending = GST_STATE_VOID_PENDING;
}
GST_UNLOCK (basesink);

9
gst/gstbin.c
View file

@ -1093,6 +1093,10 @@ gst_bin_get_state_func (GstElement * element, GstState * state,
return ret;
}
/* FIXME, defined in gstelement.c but not yet in the header */
GstStateChangeReturn
gst_element_continue_state (GstElement * element, GstStateChangeReturn ret);
static void
gst_bin_recalc_state (GstBin * bin, gboolean force)
{
@ -1209,7 +1213,7 @@ done:
switch (ret) {
case GST_STATE_CHANGE_SUCCESS:
case GST_STATE_CHANGE_NO_PREROLL:
gst_element_commit_state (GST_ELEMENT_CAST (bin));
ret = gst_element_continue_state (GST_ELEMENT_CAST (bin), ret);
break;
case GST_STATE_CHANGE_ASYNC:
gst_element_lost_state (GST_ELEMENT_CAST (bin));
@ -1221,8 +1225,7 @@ done:
goto unknown_state;
}
GST_CAT_INFO_OBJECT (GST_CAT_STATES, bin, "return now %d",
GST_STATE_RETURN (bin));
GST_CAT_INFO_OBJECT (GST_CAT_STATES, bin, "bin RETURN is now %d", ret);
return;

107
gst/gstelement.c
View file

@ -1811,40 +1811,19 @@ nothing_aborted:
}
}
/**
* gst_element_commit_state:
* @element: a #GstElement to commit the state of.
*
* Commit the state change of the element. This function is used
* by elements that do asynchronous state changes.
* The core will normally call this method automatically when an
* element returned SUCCESS from the state change function.
* Elements that return ASYNC from the change_state function should
* eventually call this method from the streaming thread to signal
* successfull state change completion.
*
* If after calling this method the element still has not reached
* the pending state, the next state change is performed.
*
* This function can only be called with the STATE_LOCK held.
*
* Returns: The result of the commit state change.
*
* MT safe.
*/
/* FIXME, this function is to be put in the .h file,
* gst_element_commit_state() should go away. */
GstStateChangeReturn
gst_element_commit_state (GstElement * element)
gst_element_continue_state (GstElement * element, GstStateChangeReturn ret)
{
GstState pending;
GstStateChangeReturn ret;
GstState old_state, old_next;
GstState current, next;
GstMessage *message;
GstStateChange transition;
g_return_val_if_fail (GST_IS_ELEMENT (element), GST_STATE_CHANGE_FAILURE);
GST_LOCK (element);
GST_STATE_RETURN (element) = ret;
pending = GST_STATE_PENDING (element);
/* check if there is something to commit */
@ -1888,17 +1867,16 @@ gst_element_commit_state (GstElement * element)
nothing_pending:
{
GST_DEBUG_OBJECT (element, "nothing pending");
GST_CAT_INFO_OBJECT (GST_CAT_STATES, element, "nothing pending");
GST_UNLOCK (element);
return GST_STATE_CHANGE_SUCCESS;
return ret;
}
complete:
{
GST_STATE_PENDING (element) = GST_STATE_VOID_PENDING;
GST_STATE_NEXT (element) = GST_STATE_VOID_PENDING;
ret = GST_STATE_RETURN (element) = GST_STATE_CHANGE_SUCCESS;
GST_DEBUG_OBJECT (element, "completed state change");
GST_CAT_INFO_OBJECT (GST_CAT_STATES, element, "completed state change");
GST_UNLOCK (element);
message = gst_message_new_state_changed (GST_OBJECT (element),
@ -1911,6 +1889,35 @@ complete:
}
}
/**
* gst_element_commit_state:
* @element: a #GstElement to commit the state of.
*
* Commit the state change of the element. This function is used
* by elements that do asynchronous state changes.
* The core will normally call this method automatically when an
* element returned SUCCESS from the state change function.
* Elements that return ASYNC from the change_state function should
* eventually call this method from the streaming thread to signal
* successfull state change completion.
*
* If after calling this method the element still has not reached
* the pending state, the next state change is performed.
*
* This function can only be called with the STATE_LOCK held.
*
* Returns: The result of the commit state change.
*
* MT safe.
*/
GstStateChangeReturn
gst_element_commit_state (GstElement * element)
{
g_return_val_if_fail (GST_IS_ELEMENT (element), GST_STATE_CHANGE_FAILURE);
return gst_element_continue_state (element, GST_STATE_CHANGE_SUCCESS);
}
/**
* gst_element_lost_state:
* @element: a #GstElement the state is lost of
@ -2085,14 +2092,15 @@ gst_element_set_state_func (GstElement * element, GstState state)
GST_STATE_UNLOCK (element);
GST_DEBUG_OBJECT (element, "returned %d", ret);
GST_CAT_DEBUG_OBJECT (GST_CAT_STATES, element, "returned %d", ret);
return ret;
was_busy:
{
GST_STATE_RETURN (element) = GST_STATE_CHANGE_ASYNC;
GST_DEBUG_OBJECT (element, "element was busy with async state change");
GST_CAT_DEBUG_OBJECT (GST_CAT_STATES, element,
"element was busy with async state change");
GST_UNLOCK (element);
GST_STATE_UNLOCK (element);
@ -2136,7 +2144,7 @@ gst_element_change_state (GstElement * element, GstStateChange transition)
/* if we go upwards, we give the app a change to wait for
* completion */
if (current < next)
goto exit;
goto async;
/* else we just continue the state change downwards */
GST_CAT_INFO_OBJECT (GST_CAT_STATES, element,
@ -2144,50 +2152,51 @@ gst_element_change_state (GstElement * element, GstStateChange transition)
gst_element_state_get_name (current),
gst_element_state_get_name (next));
GST_LOCK (element);
GST_STATE_RETURN (element) = GST_STATE_CHANGE_SUCCESS;
GST_UNLOCK (element);
ret = gst_element_commit_state (element);
ret = gst_element_continue_state (element, GST_STATE_CHANGE_SUCCESS);
break;
case GST_STATE_CHANGE_SUCCESS:
GST_CAT_DEBUG_OBJECT (GST_CAT_STATES, element,
"element changed state SUCCESS");
/* we can commit the state now which will proceeed to
* the next state */
ret = gst_element_commit_state (element);
ret = gst_element_continue_state (element, ret);
break;
case GST_STATE_CHANGE_NO_PREROLL:
GST_CAT_DEBUG_OBJECT (GST_CAT_STATES, element,
"element changed state NO_PREROLL");
/* we can commit the state now which will proceeed to
* the next state */
gst_element_commit_state (element);
ret = GST_STATE_CHANGE_NO_PREROLL;
ret = gst_element_continue_state (element, ret);
break;
default:
ret = GST_STATE_CHANGE_FAILURE;
goto invalid_return;
}
exit:
GST_CAT_LOG_OBJECT (GST_CAT_STATES, element, "exit state change %d", ret);
return ret;
async:
GST_LOCK (element);
GST_STATE_RETURN (element) = ret;
GST_CAT_LOG_OBJECT (GST_CAT_STATES, element, "exit async state change %d",
ret);
GST_UNLOCK (element);
GST_CAT_LOG_OBJECT (GST_CAT_STATES, element, "exit state change %d", ret);
return ret;
/* ERROR */
invalid_return:
{
GST_LOCK (element);
/* somebody added a GST_STATE_ and forgot to do stuff here ! */
g_critical ("%s: unknown return value %d from a state change function",
GST_ELEMENT_NAME (element), ret);
ret = GST_STATE_CHANGE_FAILURE;
GST_STATE_RETURN (element) = ret;
GST_UNLOCK (element);
/* somebody added a GST_STATE_ and forgot to do stuff here ! */
g_critical ("unknown return value %d from a state change function", ret);
return ret;
}
}
@ -2328,10 +2337,14 @@ gst_element_change_state_func (GstElement * element, GstStateChange transition)
was_ok:
{
GST_LOCK (element);
result = GST_STATE_RETURN (element);
GST_CAT_DEBUG_OBJECT (GST_CAT_STATES, element,
"element is already in the %s state",
gst_element_state_get_name (state));
return GST_STATE_RETURN (element);
GST_UNLOCK (element);
return result;
}
}

5
libs/gst/base/gstbasesink.c
View file

@ -462,6 +462,9 @@ gst_base_sink_commit_state (GstBaseSink * basesink)
case GST_STATE_PLAYING:
basesink->need_preroll = FALSE;
post_playing = TRUE;
/* post PAUSED too when we were READY */
if (current == GST_STATE_READY)
post_paused = TRUE;
break;
case GST_STATE_PAUSED:
basesink->need_preroll = TRUE;
@ -478,8 +481,6 @@ gst_base_sink_commit_state (GstBaseSink * basesink)
GST_STATE_NEXT (basesink) = GST_STATE_VOID_PENDING;
GST_STATE_PENDING (basesink) = GST_STATE_VOID_PENDING;
GST_STATE_RETURN (basesink) = GST_STATE_CHANGE_SUCCESS;
pending = GST_STATE_VOID_PENDING;
}
GST_UNLOCK (basesink);

115
tests/check/generic/sinks.c
View file

@ -181,8 +181,11 @@ GST_START_TEST (test_livesrc_remove)
}
GST_END_TEST
/* a sink should go ASYNC to PAUSE. PAUSE does not complete
* since we have a live source. */
/* the sink should go ASYNC to PAUSE. The live source should go
* NO_PREROLL to PAUSE. the pipeline returns NO_PREROLL. An
* attempt to go to PLAYING will return ASYNC. polling state
* completion should return SUCCESS when the sink is gone to
* PLAYING. */
GST_START_TEST (test_livesrc_sink)
{
GstElement *sink, *src, *pipeline;
@ -208,6 +211,10 @@ GST_START_TEST (test_livesrc_sink)
fail_unless (ret == GST_STATE_CHANGE_NO_PREROLL,
"no no_preroll state return");
ret = gst_element_set_state (pipeline, GST_STATE_PAUSED);
fail_unless (ret == GST_STATE_CHANGE_NO_PREROLL,
"no no_preroll state return the second time");
ret = gst_element_get_state (src, &current, &pending, GST_CLOCK_TIME_NONE);
fail_unless (ret == GST_STATE_CHANGE_NO_PREROLL, "not paused");
fail_unless (current == GST_STATE_PAUSED, "not paused");
@ -236,6 +243,108 @@ GST_START_TEST (test_livesrc_sink)
GST_END_TEST;
/* The sink should go ASYNC to PLAYING. The source should go
* to PLAYING with SUCCESS. The pipeline returns ASYNC. */
GST_START_TEST (test_livesrc2_sink)
{
GstElement *sink, *src, *pipeline;
GstStateChangeReturn ret;
GstState current, pending;
GstPad *srcpad, *sinkpad;
pipeline = gst_pipeline_new ("pipeline");
src = gst_element_factory_make ("fakesrc", "src");
g_object_set (G_OBJECT (src), "is-live", TRUE, NULL);
sink = gst_element_factory_make ("fakesink", "sink");
gst_bin_add (GST_BIN (pipeline), src);
gst_bin_add (GST_BIN (pipeline), sink);
srcpad = gst_element_get_pad (src, "src");
sinkpad = gst_element_get_pad (sink, "sink");
gst_pad_link (srcpad, sinkpad);
gst_object_unref (srcpad);
gst_object_unref (sinkpad);
ret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
fail_unless (ret == GST_STATE_CHANGE_ASYNC, "no async state return");
ret = gst_element_get_state (src, &current, &pending, GST_CLOCK_TIME_NONE);
fail_unless (ret == GST_STATE_CHANGE_SUCCESS, "not playing");
fail_unless (current == GST_STATE_PLAYING, "not playing");
fail_unless (pending == GST_STATE_VOID_PENDING, "not playing");
ret =
gst_element_get_state (pipeline, &current, &pending, GST_CLOCK_TIME_NONE);
fail_unless (ret == GST_STATE_CHANGE_SUCCESS, "not playing");
fail_unless (current == GST_STATE_PLAYING, "not playing");
fail_unless (pending == GST_STATE_VOID_PENDING, "not playing");
/* and back down */
ret = gst_element_set_state (pipeline, GST_STATE_PAUSED);
fail_unless (ret == GST_STATE_CHANGE_NO_PREROLL,
"no no_preroll state return");
ret = gst_element_get_state (src, &current, &pending, GST_CLOCK_TIME_NONE);
fail_unless (ret == GST_STATE_CHANGE_NO_PREROLL, "not no_preroll");
fail_unless (current == GST_STATE_PAUSED, "not paused");
fail_unless (pending == GST_STATE_VOID_PENDING, "not paused");
/* sink state is not known.. it might be prerolled or not */
/* and to READY */
ret = gst_element_set_state (pipeline, GST_STATE_READY);
fail_unless (ret == GST_STATE_CHANGE_SUCCESS, "no success state return");
ret = gst_element_get_state (src, &current, &pending, GST_CLOCK_TIME_NONE);
fail_unless (ret == GST_STATE_CHANGE_SUCCESS, "not success");
fail_unless (current == GST_STATE_READY, "not ready");
fail_unless (pending == GST_STATE_VOID_PENDING, "not ready");
ret = gst_element_get_state (sink, &current, &pending, GST_CLOCK_TIME_NONE);
fail_unless (ret == GST_STATE_CHANGE_SUCCESS, "not success");
fail_unless (current == GST_STATE_READY, "not ready");
fail_unless (pending == GST_STATE_VOID_PENDING, "not ready");
}
GST_END_TEST;
GST_START_TEST (test_livesrc3_sink)
{
GstElement *sink, *src, *pipeline;
GstStateChangeReturn ret;
GstState current, pending;
GstPad *srcpad, *sinkpad;
pipeline = gst_pipeline_new ("pipeline");
src = gst_element_factory_make ("fakesrc", "src");
g_object_set (G_OBJECT (src), "is-live", TRUE, NULL);
sink = gst_element_factory_make ("fakesink", "sink");
gst_bin_add (GST_BIN (pipeline), src);
gst_bin_add (GST_BIN (pipeline), sink);
srcpad = gst_element_get_pad (src, "src");
sinkpad = gst_element_get_pad (sink, "sink");
gst_pad_link (srcpad, sinkpad);
gst_object_unref (srcpad);
gst_object_unref (sinkpad);
ret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
fail_unless (ret == GST_STATE_CHANGE_ASYNC, "no async state return");
ret =
gst_element_get_state (pipeline, &current, &pending, GST_CLOCK_TIME_NONE);
fail_unless (ret == GST_STATE_CHANGE_SUCCESS, "not playing");
fail_unless (current == GST_STATE_PLAYING, "not playing");
fail_unless (pending == GST_STATE_VOID_PENDING, "not playing");
/* and back down */
ret = gst_element_set_state (pipeline, GST_STATE_NULL);
fail_unless (ret == GST_STATE_CHANGE_SUCCESS, "no success state return");
}
GST_END_TEST;
/* test: try changing state of sinks */
Suite *
@ -250,6 +359,8 @@ gst_object_suite (void)
tcase_add_test (tc_chain, test_src_sink);
tcase_add_test (tc_chain, test_livesrc_remove);
tcase_add_test (tc_chain, test_livesrc_sink);
tcase_add_test (tc_chain, test_livesrc2_sink);
tcase_add_test (tc_chain, test_livesrc3_sink);
return s;
}