Original commit message from CVS:
2005-06-30 Andy Wingo <wingo@pobox.com>
* gst/gstghostpad.c (gst_ghost_pad_do_activate_push): Proxy
activate_push down to the internal pad as well.
Original commit message from CVS:
Reviewed by: Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* gst/gsttaginterface.c:
Some documentation fixes (#307394 and #307397).
Original commit message from CVS:
Reviewed by: Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* gst/gstvalue.c: (gst_value_intersect_list):
Fix memleak (#309125).
Original commit message from CVS:
* docs/manual/advanced-dataaccess.xml:
Fix fakesrc example to compile; doesn't work, bug somewhere...?
* docs/manual/basics-pads.xml:
Add reference for filtered caps to above chapter.
Original commit message from CVS:
* gst/gstbin.c: (clear_queue), (remove_all_from_queue),
(gst_bin_change_state):
Lame attempt at making the state change function a bit
more readable.
Original commit message from CVS:
* docs/design/part-clocks.txt:
* docs/design/part-element-sink.txt:
* docs/design/part-events.txt:
* docs/design/part-preroll.txt:
* docs/design/part-states.txt:
Some more tweeks and additions to the docs.
Original commit message from CVS:
* gst/gstpad.c: (_gst_do_pass_data_accumulator),
(silly_return_true_function), (gst_pad_class_init),
(gst_pad_emit_have_data_signal), (gst_pad_chain), (gst_pad_push),
(gst_pad_get_range), (gst_pad_pull_range), (gst_pad_push_event),
(gst_pad_send_event):
Fix accumulator, add default value by using _emitv() instead
of _emit() for signal emission.
Original commit message from CVS:
* docs/manual/advanced-dataaccess.xml:
* examples/manual/Makefile.am:
Add probe example.
* gst/gstpad.c: (_gst_do_pass_data_accumulator):
Make work (??).
Original commit message from CVS:
* gst/elements/gstfilesink.c: (gst_filesink_render):
Simplify code so that we don't have to handle short
writes and return GST_FLOW_ERROR if an error occured.
Original commit message from CVS:
* gst/gstelementfactory.c:
* gst/gstutils.h:
* gst/gstutils.c:
Moved gst_element_factory_can_[sink|src]_caps() to gstutils and added
the definition to the header file.
Original commit message from CVS:
2005-06-29 Andy Wingo <wingo@pobox.com>
* docs/gst/Makefile.am (scan-build.stamp): Totally only check
plugins from the source directory.
Original commit message from CVS:
* check/Makefile.am:
* gst/gst.c: (add_path_func), (init_pre):
* gst/gstregistry.c: (gst_registry_add_path):
add A GST_PLUGIN_PATH_ONLY env var; if it is set, it will
only scan the GST_PLUGIN_PATH locations, and not add
system locations
Original commit message from CVS:
* docs/manual/advanced-autoplugging.xml:
* docs/manual/mime-world.fig:
Try to get autoplugging working, fix type detection. Fix text
in hello-world image.
Original commit message from CVS:
* gst/base/gstbasesink.c: (gst_base_sink_handle_object),
(gst_base_sink_change_state):
Small debug line.
* gst/gstclock.h:
map SIGNAL and BROADCAST to the right function.
* gst/gstobject.h:
Remove redundant braces.
* gst/gstpad.c: (gst_pad_set_caps):
Don't call setcaps function when reseting caps to NULL.
* gst/gstsystemclock.c: (gst_system_clock_dispose),
(gst_system_clock_async_thread), (gst_system_clock_id_wait_async),
(gst_system_clock_id_unschedule):
Use BROADCAST as this is what we do.
Original commit message from CVS:
* gst/base/gstbasesink.c: (gst_base_sink_handle_object):
We are actually prerolling before commiting the state
change.
Original commit message from CVS:
* docs/manual/advanced-clocks.xml:
* docs/manual/advanced-interfaces.xml:
* docs/manual/advanced-metadata.xml:
* docs/manual/advanced-position.xml:
* docs/manual/advanced-schedulers.xml:
* docs/manual/advanced-threads.xml:
* docs/manual/appendix-porting.xml:
* docs/manual/basics-bins.xml:
* docs/manual/basics-bus.xml:
* docs/manual/basics-elements.xml:
* docs/manual/basics-helloworld.xml:
* docs/manual/basics-pads.xml:
* docs/manual/highlevel-components.xml:
* docs/manual/manual.xml:
* docs/manual/thread.fig:
Update (until threads/scheduling) Application Development Manual;
remove GstThread, add GstBus, add simple porting checklist, add
documentation for tag writing, clocks, make all examples until this
part compile and run.
* examples/manual/Makefile.am:
Update from changes to Application Development Manual; add bus
example, remove thread example.
Original commit message from CVS:
* gst/gstbus.c: (gst_bus_post), (gst_bus_have_pending),
(gst_bus_set_flushing), (gst_bus_pop), (gst_bus_peek),
(gst_bus_source_dispatch):
Add debugging messages.
Make internal methods static.
Handle the case where the bus is flushed in the handler.
* gst/gstelement.c: (gst_element_get_bus):
Fix refcount in _get_bus();
* gst/gstpipeline.c: (gst_pipeline_change_state),
(gst_pipeline_get_clock_func):
Clock refcounting fixes.
Handle the case where preroll timed out more gracefully.
* gst/gstsystemclock.c: (gst_system_clock_dispose):
Clean up the internal thread in dispose. This is needed
for subclasses that actually get disposed.
* gst/schedulers/threadscheduler.c:
(gst_thread_scheduler_class_init), (gst_thread_scheduler_func),
(gst_thread_scheduler_dispose):
Free thread pool in dispose.
Original commit message from CVS:
2005-06-28 Andy Wingo <wingo@pobox.com>
* tests/network-clock-utils.scm (debug, print-event): New utils.
* tests/network-clock.scm (*debug*, *with-graph*): New parameters.
(*packet-loss*): Unified loss probability.
(network-time): Report out-of-band events.
* tests/plot-data: Add support for out-of-band events. Hack it
into this script instead of passing it down the pipe; should fix
this later.
Original commit message from CVS:
2005-06-28 Andy Wingo <wingo@pobox.com>
* tests/network-clock.scm (*timeout*, *send-loss*, *recv-loss*):
New parameters, simulate network packet loss.
* tests/network-clock-utils.scm: Initialize the RNG.
Original commit message from CVS:
* gst/base/gstbasesink.c: (gst_basesink_preroll_queue_flush),
(gst_basesink_event), (gst_basesink_deactivate):
Flushing the preroll queue always needs to unlock the waiters.
Original commit message from CVS:
* gst/gstpipeline.c: (gst_pipeline_send_event):
Wheen a seek was successful on a pipeline, set the stream_time to the
seek offset in order to have a synchronized stream_time.
Original commit message from CVS:
* gst/gstghostpad.c: (gst_proxy_pad_do_bufferalloc),
(gst_proxy_pad_do_getrange), (gst_proxy_pad_do_checkgetrange),
(gst_proxy_pad_do_getcaps), (gst_proxy_pad_do_acceptcaps),
(gst_proxy_pad_do_fixatecaps):
Call wrapper function instead of just calling the function
pointers. This takes care of any locking and whatmore.
Original commit message from CVS:
2005-06-28 Andy Wingo <wingo@pobox.com>
* *.c: Don't cast to GST_OBJECT when reffing or unreffing. Large
source-munging commit!!!
Original commit message from CVS:
2005-06-28 Andy Wingo <wingo@pobox.com>
* gst/gstobject.c (gst_object_unref, gst_object_ref)
(gst_object_sink): Take gpointer arguments, not GstObject --
avoids casts. Like GLib.
Original commit message from CVS:
2005-06-27 Andy Wingo <wingo@pobox.com>
* gst/base/gsttypefindhelper.c (gst_type_find_helper): Unref any
remaining buffer.
* gst/gsttrace.c (gst_alloc_trace_list_sorted): New helper,
returns a sorted copy of the trace list.
(gst_alloc_trace_print_live): New API, only prints traces with
live objects. Sort the list.
(gst_alloc_trace_print_all): Sort the list.
(gst_alloc_trace_print): Align columns.
* gst/elements/gstttypefindelement.c:
* gst/elements/gsttee.c:
* gst/base/gstbasesrc.c:
* gst/base/gstbasesink.c:
* gst/base/gstbasetransform.c:
* gst/gstqueue.c: Adapt for pad activation changes.
* gst/gstpipeline.c (gst_pipeline_init): Unref after parenting
sched.
(gst_pipeline_dispose): Drop ref on sched.
* gst/gstpad.c (gst_pad_init): Set the default activate func.
(gst_pad_activate_default): Push mode by default.
(pre_activate_switch, post_activate_switch): New stubs, things to
do before and after switching activation modes on pads.
(gst_pad_set_active): Take a boolean and not a mode, dispatch to
the pad's activate function to choose which mode to activate.
Shortcut on deactivation and call the right function directly.
(gst_pad_activate_pull): New API, (de)activates a pad in pull
mode.
(gst_pad_activate_push): New API, same for push mode.
(gst_pad_set_activate_function)
(gst_pad_set_activatepull_function)
(gst_pad_set_activatepush_function): Setters for new API.
* gst/gstminiobject.c (gst_mini_object_new, gst_mini_object_free):
Trace all miniobjects.
(gst_mini_object_make_writable): Unref the arg if we copy, like
gst_caps_make_writable.
* gst/gstmessage.c (_gst_message_initialize): No trace init.
* gst/gstghostpad.c (gst_proxy_pad_do_activate)
(gst_proxy_pad_do_activatepull, gst_proxy_pad_do_activatepush):
Adapt for new pad API.
* gst/gstevent.c (_gst_event_initialize): Don't initialize trace.
* gst/gstelement.h:
* gst/gstelement.c (gst_element_iterate_src_pads)
(gst_element_iterate_sink_pads): New API functions.
* gst/gstelement.c (iterator_fold_with_resync): New utility,
should fold into gstiterator.c in some form.
(gst_element_pads_activate): Simplified via use of fold and
delegation of decisions to gstpad->activate.
* gst/gstbus.c (gst_bus_source_finalize): Set the bus to NULL,
help in debugging.
* gst/gstbuffer.c (_gst_buffer_initialize): Ref the buffer type
class once in init, like gstmessage. Didn't run into this issue
but it seems correct. Don't initialize a trace, gstminiobject does
that.
* check/pipelines/simple_launch_lines.c (test_stop_from_app): New
test, runs fakesrc ! fakesink, stopping on ::handoff via a message
to the bus.
(assert_live_count): New util function, uses alloc traces to check
cleanup.
* check/gst/gstghostpad.c (test_ghost_pads): More refcount checks.
To be modified when unlink drops the internal pad.
Original commit message from CVS:
* gst/gstbin.c: (gst_bin_get_state), (gst_bin_iterate_state_order),
(gst_bin_change_state):
Cleanup the get_state() function a little, make sure it
iterates the same set of elements.
Added stub iterate_state_order().
Original commit message from CVS:
2005-06-27 Andy Wingo <wingo@pobox.com>
* docs/design/part-activation.txt: Notes on how activation should
work -- not quite implemented yet.
Original commit message from CVS:
* gst/base/gstbasesink.c: (gst_basesink_preroll_queue_empty),
(gst_basesink_handle_object), (gst_basesink_event),
(gst_basesink_do_sync), (gst_basesink_handle_event),
(gst_basesink_change_state):
* gst/gsttask.h:
Right, two problems here: ghostpads don't take locks and
glib _rec_mutex_lock_full() with depth==0 still locks.
Catch illegal locking and g_warn them.
Original commit message from CVS:
* gst/base/gstbasesink.c: (gst_basesink_set_property),
(gst_basesink_preroll_queue_empty),
(gst_basesink_preroll_queue_flush), (gst_basesink_handle_object),
(gst_basesink_event), (gst_basesink_do_sync),
(gst_basesink_handle_event), (gst_basesink_handle_buffer),
(gst_basesink_chain), (gst_basesink_loop), (gst_basesink_activate),
(gst_basesink_change_state):
Reworked the base sink, handle event and buffer serialisation
correctly and removed possible deadlock.
Handle EOS correctly.
Original commit message from CVS:
* gst/gstpipeline.c: (is_eos), (pipeline_bus_handler),
(gst_pipeline_change_state):
* tools/gst-launch.c: (check_intr), (event_loop), (main):
Allow elements to post EOS in the state change function.
Fix up -launch, make it exit the poll loop when the
pipeline actually changed state.
Fix up warning parsing in -launch.
Original commit message from CVS:
* gst/elements/gsttee.c: (gst_tee_chain), (gst_tee_loop),
(gst_tee_sink_activate):
Core takes STREAM_LOCK for us now.
Original commit message from CVS:
* gst/gstelement.c: (gst_element_get_state_func),
(gst_element_set_state):
* gst/gstelement.h:
* gst/gstmessage.c: (gst_message_parse_error),
(gst_message_parse_warning):
Keep track of current target state while performing a state
change so that subclasses can do something interesting.
Fix parsing of warning/error messages when GError is NULL.
Original commit message from CVS:
* gst/gstelement.c: (gst_element_get_state_func),
(gst_element_set_state), (gst_element_change_state):
When the state did not change, also report NO_PREROLL
when it matters.
Original commit message from CVS:
* gst/schedulers/threadscheduler.c:
(gst_thread_scheduler_task_start),
(gst_thread_scheduler_task_pause), (gst_thread_scheduler_func):
Ref the task before pushing it on the threadpool. This
makes sure that we have a ref when the threadfunction is
actually called.
Original commit message from CVS:
2005-06-23 Andy Wingo <wingo@pobox.com>
* gst/base/gstbasesrc.c (gst_basesrc_get_range): Check if the
offset is greater than the file's size.
Original commit message from CVS:
2005-06-23 Andy Wingo <wingo@pobox.com>
* gst/gstobject.h (GST_CLASS_LOCK, GST_CLASS_TRYLOCK)
(GST_CLASS_UNLOCK, GST_CLASS_GET_LOCK, GstObjectClass)
* gst/gstobject.c (gst_object_class_init): Make the class lock
recursive. Wim won't let me drop deep_notify. Decodebin works
again, whoopdy doo.
Original commit message from CVS:
2005-06-23 Andy Wingo <wingo@pobox.com>
* gst/gstghostpad.c (on_int_notify): Catches notify::caps on the
internal pad, and hacks accordingly. Doesn't do it on the target
pad because we change its caps. Probably catches all cases of
interest tho.
(gst_ghost_pad_set_property): Connect to notify::caps as
appropritate.
Original commit message from CVS:
2005-06-23 Andy Wingo <wingo@pobox.com>
* tests/network-clock.scm (plot-simulation): Pipe data to the
elite python skript.
* tests/network-clock-utils.scm (define-parameter): New macro,
defines a parameter that can be set via the command line.
(set-parameter!, parse-parameter-arguments): Command line args
parser.
* tests/plot-data: Simple matplotlib-based plotter, takes input on
stdin.
Original commit message from CVS:
2005-06-23 Jan Schmidt <thaytan@mad.scientist.com>
* gst/elements/gsttypefindelement.c:
(gst_type_find_element_handle_event):
Don't restart typefinding on a discont.
* gst/gstelement.c: (gst_element_set_state):
Debug spelling fix.
* gst/gstpad.c: (gst_pad_set_active), (gst_pad_send_event):
Allow changing mode of an active pad.
Debug output fixes.
* gst/registries/gstlibxmlregistry.c: (load_feature):
Don't cast a static pad template to a normal pad template.
Original commit message from CVS:
* check/gst/gstvalue.c: (START_TEST), (gst_value_suite):
* gst/gstvalue.c: (gst_value_deserialize_int_helper):
remove gst_strtoll completely, since it didn't actually do
anything more than what g_ascii_strtoull already does.
check for range errors when deserializing
do a cast for the unsigned cases; but further fixing needs
a decision on what the interpretation of "(int)" and
deserialization should be for values that fall outside the
type's boundaries (ie, refuse, or interpret as casting)
Original commit message from CVS:
Added support for live sources and other elements that
cannot do preroll.
Updated design docs, added live-source design doc.
Implemented live source functionality in basesrc
Fix error condition in _bin_get_state()
Implement live source handling in -launch.
Added check for live sources.
Fixed case in GstBin where elements were changed state
multiple times.
Original commit message from CVS:
2005-06-23 Andy Wingo <wingo@pobox.com>
* gst/gstpad.c (gst_pad_set_caps): Remove needless refs,
gst_caps_replace takes care of this for us.
Original commit message from CVS:
2005-06-23 Andy Wingo <wingo@pobox.com>
* gst/gstghostpad.c (gst_proxy_pad_do_setcaps): Call the full
gst_pad_set_caps on the target, not just its setcaps() function.
Original commit message from CVS:
2005-06-23 Andy Wingo <wingo@pobox.com>
* tests/network-clock.scm:
* tests/network-clock-utils.scm: A network clock simulator.
Something of an algorithmic testbed before doing something in C.
Original commit message from CVS:
* check/Makefile.am:
* check/gst/capslist.h:
copy over from 0.8, and add two with bitmasks specified with
(int) 0xFF...
* check/gst/gstcaps.c: (START_TEST), (gst_caps_suite):
add test to parse everything from capslist.h
* check/gst/gststructure.c: (START_TEST), (gst_value_suite),
(main):
add test for structure deserialization
* check/gst/gstvalue.c: (START_TEST), (gst_value_suite):
add tests for deserialization of strings to int types
* gst/gststructure.c: (gst_structure_nth_field_name):
* gst/gststructure.h:
add a way to get the name of a field referenced by index
* gst/gstvalue.c: (gst_value_deserialize_int_helper):
instead of checking if the resulting long long lies between
min and max, we check if the long long would fit into
a number of bytes for the final type.
This fixes cases where a string represents 2^32 - 1, which
when cast to int would be the (valid) -1, but is bigger than
G_MAXINT
Original commit message from CVS:
* check/gst/gstvalue.c: (START_TEST):
* gst/gstvalue.c: (gst_value_deserialize):
return long long, not int, so gint64 deserialization actually
works. Is there any flag that makes the compiler check this ?
Fixes#308559
Original commit message from CVS:
* check/gst/.cvsignore:
* check/gst/gstvalue.c: (START_TEST), (gst_value_suite):
add a test deserializing int64, and comment part out because
it fails, yay !
Original commit message from CVS:
* gst/gstpad.c:
Small doc updates.
* gst/gstvalue.c: (gst_value_compare_buffer),
(gst_value_serialize_buffer), (gst_value_deserialize_buffer),
(gst_value_compare_flags), (gst_value_serialize_flags),
(gst_value_deserialize_flags), (_gst_value_initialize):
Fix serialisation of buffers, they are not boxed types anymore
Original commit message from CVS:
2005-06-20 Andy Wingo <wingo@pobox.com>
* docs/random/wingo/porting-plugins-to-0.9: A pitiful document I
will be adding to later.
Original commit message from CVS:
2005-06-20 Andy Wingo <wingo@pobox.com>
* gst/gstsystemclock.c (gst_system_clock_init): Unlock the clock
if its socks fill with rocks.
(gst_system_clock_obtain): Set the name on object construction.
Avoid double-checked locking.
Original commit message from CVS:
* check/gstcheck.h:
add macros for checking refcounts on objects and caps
* check/gst/gstpad.c: (START_TEST), (gst_pad_suite):
add some more unit tests
* gst/gstpad.c: (gst_pad_link_check_compatible_unlocked),
(gst_pad_link_prepare), (gst_pad_link), (gst_pad_get_allowed_caps):
fix leaked refcounts (I hope :)) so unittest works
* gst/gstpad.h:
whitespace removal
Original commit message from CVS:
2005-06-17 Andy Wingo <wingo@pobox.com>
* gst/base/gstbasesink.c (gst_basesink_event): Only wait for the
clock and post an EOS message if we come out of finish_preroll in
the playing state.
Original commit message from CVS:
* gst/elements/gstcapsfilter.c: (gst_capsfilter_class_init),
(gst_capsfilter_set_property): Allow NULL as possible value
for filter_caps property, indicating GST_CAPS_ANY.
Original commit message from CVS:
2005-06-08 Andy Wingo <wingo@pobox.com>
* gst/gstutils.c: RPAD fixes all around.
(gst_element_link_pads): Refcounting fixes.
* tools/gst-inspect.c:
* tools/gst-xmlinspect.c:
* parse/grammar.y:
* gst/base/gsttypefindhelper.c:
* gst/base/gstbasesink.c:
* gst/gstqueue.c: RPAD fixes.
* gst/gstghostpad.h:
* gst/gstghostpad.c: New ghost pad implementation as full proxy
pads. The tricky thing is they provide both source and sink
interfaces, since they proxy the internal pad for the external
pad, and vice versa. Implement with lower-level ProxyPad objects,
with the interior proxy pad as a child of the exterior ghost pad.
Should write a doc on this.
* gst/gstpad.h: s/RPAD/PAD/, s/RealPad/Pad/.
(gst_pad_set_name, gst_pad_set_parent): Macros removed, use
gst_object API.
* gst/gstpad.c: Big changes. No more stub base GstPad, now all
pads are real pads. No ghost pads in this file. Not documenting
the myriad s/RPAD/PAD/ and REALIZE fixes.
(gst_pad_class_init): Add properties for "direction" and
"template". Both are construct-only, so they can't change during
the life of the pad. Fixes properly deriving from GstPad.
(gst_pad_custom_new, gst_pad_custom_new_from_template): Gone. For
derived objects, just set properties when creating the objects via
g_object_new.
(gst_pad_get_parent): Implement as a function, return NULL if the
parent is not an element.
(gst_pad_get_real_parent, gst_pad_add_ghost_pad)
(gst_pad_remove_ghost_pad, gst_pad_realize): Removed.
* gst/gstobject.c (gst_object_class_init): Make name a construct
property. Don't set it in the object init.
* gst/gstelement.c (gst_element_add_pad): Don't allow adding pads
with UNKNOWN direction.
(gst_element_add_ghost_pad): Remove non-orthogonal API. Replace
with gst_element_add_pad (e, gst_ghost_pad_new (name, pad)).
(gst_element_remove_pad): Remove ghost-pad special cases.
(gst_element_pads_activate): Remove rpad cruft.
* gst/gstbin.c (gst_bin_change_state): Use gst_pad_get_parent to
catch the pad's-parent-not-an-element case.
* gst/gst.h: Include gstghostpad.h.
* gst/gst.c (init_post): No more real, ghost pads.
* gst/Makefile.am: Add gstghostpad.[ch].
* check/Makefile.am:
* check/gst/gstbin.c:
* check/gst/gstghostpad.c (test_ghost_pads): Check that linking
into a bin creates ghost pads, and that the refcounts are right.
Partly moved from gstbin.c.
Original commit message from CVS:
* check/gst-libs/.cvsignore:
* check/gst/.cvsignore:
* check/pipelines/.cvsignore:
ignore more
* check/pipelines/cleanup.c: (setup_pipeline), (run_pipeline),
(START_TEST), (cleanup_suite), (main):
add some tests related to cleanup after running pipelines
Original commit message from CVS:
* gst/elements/gstcapsfilter.c: (gst_capsfilter_set_property):
Free existing caps if the capsfilter changes. Add a FIXME about
setting those caps on the pads.
* gst/gstutils.c: (gst_element_get_compatible_pad), (ghost_up):
Before adding a ghost pad to a parent bin, check that there isn't
already one for the element on the bin. Prevents infinite recursion
when using decodebin in parse pipelines. Andy says he'll rewrite the
way this works anyway, so ignore the hack.
Original commit message from CVS:
2005-06-02 Andy Wingo <wingo@pobox.com>
* gst/elements/gsttypefindelement.c (do_pull_typefind): Query the
file size, pass it on to the type find helper.
* gst/base/gstbasesrc.c (gst_basesrc_do_seek): Set the
segment_start and segment_end properly according to the seek
method. Segment_end is still a bit flaky because offset can be
negative for CUR and END cases, but it takes -1 as an "unset"
value.
Original commit message from CVS:
* gst/elements/gstidentity.c: (gst_identity_event),
(gst_identity_transform), (gst_identity_get_property):
Protect last_message property as it is accessed from
multiple threads.
Original commit message from CVS:
* gst/gstelement.c: (gst_element_init),
(gst_element_pads_activate), (gst_element_change_state):
Slicker pad activation code.
Original commit message from CVS:
* gst/Makefile.am:
* gst/gstelement.h:
* gst/gstelementfactory.h:
* gst/gsttypes.h:
Move elementfactory methods to separate .h file.
Original commit message from CVS:
* gst/gstbuffer.c: (gst_subbuffer_finalize),
(gst_buffer_create_sub), (gst_buffer_is_span_fast):
* gst/gstbuffer.h:
Avoid typechecking in places where not needed.
Added accessor for malloc_data.
Original commit message from CVS:
* gst/gstpad.c: (gst_real_pad_init), (gst_pad_set_active),
(gst_pad_link_prepare), (gst_pad_link), (gst_pad_accept_caps),
(gst_pad_configure_sink), (gst_pad_configure_src),
(gst_pad_alloc_buffer), (gst_pad_query), (gst_pad_send_event),
(gst_pad_start_task):
Propagate errors from _set_caps() in configure_src/sink
functions instead of returning TRUE.
FLUSH events can travel up and downstream
