The internal proxy pad target is simply a cache of the internal proxy pad
peer. This patch uses the well implement GstPad peer handling to obtain the
target. This fixes issues with target not being set in both direction when
two ghostpads are linked together (empty bin).
https://bugzilla.gnome.org/show_bug.cgi?id=658517
This allows to get the internal pad of ghostpads and
proxypads without using gst_pad_iterate_internal_links()
and is much more convenient.
The internal pad of a ghostpad is the pad of the opposite direction
that is used to link to the ghostpad target.
When the target pad disappears (because it was explicitly unlinked or the
element was removed/unreffed) make sure we receive a notify with the unlink
function on the proxy pad and clear the target. We use a simple flag to not do
this and cause deadlocks when the target was changed explicitly using the
ghostpad functions.
Update the unit test because we now unref the target sooner (and correctly).
Original commit message from CVS:
* gst/gstghostpad.c:
* tests/check/gst/gstghostpad.c:
Don't forward gst_pad_set_caps() on a source ghostpad to its target.
That would cause the ghostpad to emit notify::caps two times (fist
from gst_pad_set_caps() and after from on_src_target_notify()).
Original commit message from CVS:
* tests/check/gst/gstghostpad.c: (ghost_notify_caps),
(GST_START_TEST):
Add some more unit-tests for the ghostpad notify signal, one of which
currently fails.
Original commit message from CVS:
* gst/gstghostpad.c:
* tests/check/gst/gstghostpad.c:
In a source ghostpad, when caps are changed in the target pad, the
change needs to be reflected in the ghostpad.
Fixes#564863.
Original commit message from CVS:
* gst/gstutils.c: (gst_element_get_compatible_pad):
* tests/check/gst/gstghostpad.c: (GST_START_TEST):
* tests/check/gst/gstpad.c: (name_is_valid), (GST_START_TEST):
Fix all leaks due to the bug in gst_pad_template_new() by which it does
not steal the refcount of the given caps as stated.
REVERT THIS COMMIT ONCE FIXED !
REVERT THIS COMMIT ONCE FIXED !
REVERT THIS COMMIT ONCE FIXED !
REVERT THIS COMMIT ONCE FIXED !
REVERT THIS COMMIT ONCE FIXED !
REVERT THIS COMMIT ONCE FIXED !
Original commit message from CVS:
* tests/check/gst/gstghostpad.c: (GST_START_TEST):
Fix some memory leaks and uses of object instances that we don't
actually own.
Original commit message from CVS:
* gst/gstbin.c: (is_eos), (gst_bin_add_func),
(bin_handle_async_start), (gst_bin_handle_message_func):
Improve debugging.
When adding elements, insert messages into the bus of the newly added
element and make sure the element is the source of the message. This
allows the parent bin to intercept the message and do the
right thing. It also avoids us posting ASYNC_START and CLOCK_PROVIDE
messages to the app (which is not allowed).
Update some docs.
* tests/check/gst/gstghostpad.c: (GST_START_TEST):
Fix testsuite so that is does not work around messages that should not
have been posted in the first place.
Original commit message from CVS:
* docs/design/part-gstghostpad.txt:
Update ascii art in documentation.
* gst/gstghostpad.c: (gst_proxy_pad_do_internal_link),
(gst_proxy_pad_set_target_unlocked), (gst_proxy_pad_init),
(gst_ghost_pad_parent_set), (gst_ghost_pad_parent_unset),
(gst_ghost_pad_internal_do_activate_push),
(gst_ghost_pad_internal_do_activate_pull),
(gst_ghost_pad_do_activate_push), (gst_ghost_pad_do_activate_pull),
(gst_ghost_pad_do_link), (gst_ghost_pad_do_unlink),
(gst_ghost_pad_dispose), (gst_ghost_pad_new_full),
(gst_ghost_pad_set_target):
Small cleanups and leak fixes.
Remove some checks now that the internal pad is never NULL.
Fix the case where linking pads without a target would create nasty
criticals. Fixes#341029.
Don't assign a GstPadLinkReturn to a gboolean and mess up the return
value of _set_target().
* tests/check/gst/gstghostpad.c: (GST_START_TEST),
(gst_ghost_pad_suite):
Some more tests for creating and linking untargeted ghostpads.
Original commit message from CVS:
* docs/gst/gstreamer-sections.txt:
* gst/gstghostpad.c: (gst_proxy_pad_do_getcaps),
(gst_proxy_pad_do_setcaps), (gst_proxy_pad_set_target_unlocked),
(gst_proxy_pad_dispose), (gst_ghost_pad_new_full),
(gst_ghost_pad_new_no_target), (gst_ghost_pad_new),
(gst_ghost_pad_new_from_template),
(gst_ghost_pad_new_no_target_from_template):
* gst/gstghostpad.h:
Refactored *_new() functions.
Templates are now used as a g_object_new() parameter.
Use template in _do_getcaps() if we don't have a target.
Small documentation cleanups.
Added two new constructors:
gst_ghost_pad_new_from_template()
gst_ghost_pad_new_no_target_from_template()
* tests/check/gst/gstghostpad.c: (GST_START_TEST),
(gst_ghost_pad_suite):
Added tests for new ghostpad instanciation functions.
API additions: gst_ghost_pad_new_from_template,
gst_ghost_pad_new_no_target_from_template
Original commit message from CVS:
* gst/gstbin.c: (activate_pads),
(iterator_activate_fold_with_resync), (gst_bin_src_pads_activate),
(gst_bin_change_state_func):
(de)activate src pads before calling state_change on the childs.
This is to avoid the case where a src ghostpad is blocked (holding the
stream lock), which would block the deactivation of the ghostpad's
target pad.
* gst/gstghostpad.c: (gst_proxy_pad_do_query_type),
(gst_proxy_pad_do_event), (gst_proxy_pad_do_query),
(gst_proxy_pad_do_internal_link), (gst_proxy_pad_do_bufferalloc),
(gst_proxy_pad_do_chain), (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),
(gst_proxy_pad_do_setcaps), (gst_proxy_pad_set_target_unlocked),
(gst_proxy_pad_set_target), (gst_proxy_pad_get_internal),
(gst_proxy_pad_dispose), (gst_proxy_pad_init),
(gst_ghost_pad_parent_set), (gst_ghost_pad_parent_unset),
(gst_ghost_pad_class_init),
(gst_ghost_pad_internal_do_activate_push),
(gst_ghost_pad_internal_do_activate_pull),
(gst_ghost_pad_do_activate_push), (gst_ghost_pad_do_activate_pull),
(gst_ghost_pad_do_link), (gst_ghost_pad_do_unlink),
(gst_ghost_pad_dispose), (gst_ghost_pad_new_no_target),
(gst_ghost_pad_new), (gst_ghost_pad_set_target):
GhostPads now create their internal GstProxyPad at creation (and not
when they're linked, as it was being done previously).
The internal and target pads are linked straight away.
The data will also travel through the other pad in order to make
pad blocking and probes non-hackish (the probe/block now really happens
on the GhostPad and not on the target).
* gst/gstpad.c: (gst_pad_set_blocked_async),
(gst_pad_link_prepare), (gst_pad_push_event):
Remove previous ghostpad cruft.
* gst/gstutils.c: (gst_pad_add_data_probe),
(gst_pad_add_event_probe), (gst_pad_add_buffer_probe),
(gst_pad_remove_data_probe), (gst_pad_remove_event_probe),
(gst_pad_remove_buffer_probe):
Remove previous ghost pad cruft.
Added more detailed debug statements.
* tests/check/gst/gstghostpad.c: (GST_START_TEST):
Fix the testsuite for refcounting changes.
The comments about who has references were correct, but the refcount
being checked wasn't the same (!?!).
Original commit message from CVS:
* tests/check/gst/gstghostpad.c: (block_callback),
(GST_START_TEST), (gst_ghost_pad_suite):
Added some more ghostpad tests, mainly blocking
and probes.
Original commit message from CVS:
2006-04-29 Thomas Vander Stichele <thomas at apestaart dot org>
* tests/check/gst/gstghostpad.c: (GST_START_TEST):
add more asserts on refcounts
do more cleanup at end of tests
fix test leaks showing in FC5
Original commit message from CVS:
* tests/check/gst/gstghostpad.c: (GST_START_TEST):
Unref a pad we reffed.
* tests/check/gst/gstutils.c: (GST_START_TEST):
Unref bins
Original commit message from CVS:
* gst/gstutils.c: (gst_element_unlink_pads):
Don't leak pad references.
* tests/check/elements/fakesink.c: (GST_START_TEST):
* tests/check/generic/sinks.c: (GST_START_TEST):
* tests/check/generic/states.c: (GST_START_TEST):
* tests/check/gst/gstbin.c: (GST_START_TEST):
* tests/check/gst/gstcaps.c: (GST_START_TEST):
* tests/check/gst/gstelement.c: (GST_START_TEST):
* tests/check/gst/gstghostpad.c: (GST_START_TEST):
* tests/check/gst/gstiterator.c: (GST_START_TEST):
* tests/check/gst/gstvalue.c: (GST_START_TEST):
Fix a bunch of leaks. Make generic/sinks.c
use a bit less cpu by slowing the buffer rate
between fakesrc and fakesink.
Original commit message from CVS:
2005-11-22 Andy Wingo <wingo@pobox.com>
* gst/gstevent.h (gst_event_new_new_segment)
(gst_event_parse_new_segment, gst_event_new_buffer_size)
(gst_event_parse_buffer_size, gst_ghost_pad_new_no_target):
Renamed from *_newsegment, *_buffersize, *_notarget.
* scripts/update-funcnames: New script, performs the changes
listed above.
Original commit message from CVS:
2005-11-21 Andy Wingo <wingo@pobox.com>
* *.h:
* *.c: Ran scripts/update-macros. Oh yes.
* gst/gstobject.h (GST_OBJECT_GET_LOCK, GST_OBJECT_LOCK)
(GST_OBJECT_TRYLOCK, GST_OBJECT_UNLOCK): Renamed from
GST_GET_LOCK, etc.
* scripts/update-macros: New script. Run it on your files to
change GST_LOCK to GST_OBJECT_LOCK, and the same for UNLOCK as
well.
Original commit message from CVS:
* check/gst/gstghostpad.c: (GST_START_TEST), (gst_ghost_pad_suite):
Added check for bug #317341
* gst/gstbuffer.c:
* gst/gstbuffer.h:
Some more spiffifying.
* gst/gstghostpad.c: (gst_ghost_pad_do_link):
Call peer linkfunction if we are a source pad. Totally fixes
#317341
* gst/gstpad.c:
Update docs, source pads should call the peer linkfunction
so they can atomically perform the pad link.
Original commit message from CVS:
* check/gst/gstbin.c: (GST_START_TEST):
* check/gst/gstghostpad.c: (GST_START_TEST):
* check/pipelines/cleanup.c: (GST_START_TEST):
wait on thread to die so we can check refcount correctly
Original commit message from CVS:
2005-10-10 Andy Wingo <wingo@pobox.com>
* check/gst/gstghostpad.c (test_ghost_pads): Merge from the state
change patch.
Original commit message from CVS:
2005-09-02 Andy Wingo <wingo@pobox.com>
* gst/gstelement.h (GstState): Renamed from GstElementState,
changed to be a normal enum instead of flags.
(GstStateChangeReturn): Renamed from GstElementStateReturn, names
munged to be GST_STATE_CHANGE_*.
(GST_STATE_CHANGE): Renamed from GST_STATE_TRANSITION, updated to
work with the new state representation.
(GstStateChange): New enumeration of possible state transitions.
Replaces GST_STATE_FOO_TO_BAR with GST_STATE_CHANGE_FOO_TO_BAR.
(GstElementClass::change_state): Pass the GstStateChange along as
an argument. Helps language bindings, so they don't have to use
tricky lock-needing macros like GST_STATE_CHANGE ().
* scripts/update-states (file): New script. Run it on a file to
update it for state naming and API changes. Updates files in
place.
* All files updated for the new API.
Original commit message from CVS:
* check/gst/gstghostpad.c: (GST_START_TEST), (gst_ghost_pad_suite):
Added test for removing an element with ghostpad from a bin.
Fixed test as current implementation does the right thing.
* gst/gstghostpad.c: (gst_proxy_pad_class_init),
(gst_proxy_pad_do_query_type), (gst_proxy_pad_do_event),
(gst_proxy_pad_do_query), (gst_proxy_pad_do_internal_link),
(gst_proxy_pad_do_bufferalloc), (gst_proxy_pad_do_activate),
(gst_proxy_pad_do_activatepull), (gst_proxy_pad_do_activatepush),
(gst_proxy_pad_do_chain), (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),
(gst_proxy_pad_do_setcaps), (gst_proxy_pad_set_target),
(gst_proxy_pad_get_target), (gst_proxy_pad_init),
(gst_proxy_pad_dispose), (gst_proxy_pad_finalize),
(gst_ghost_pad_class_init), (gst_ghost_pad_do_activate_push),
(gst_ghost_pad_do_link), (gst_ghost_pad_do_unlink),
(gst_ghost_pad_set_internal), (gst_ghost_pad_dispose),
(gst_ghost_pad_new_notarget), (gst_ghost_pad_new),
(gst_ghost_pad_get_target), (gst_ghost_pad_set_target):
* gst/gstghostpad.h:
Clean up ghostpads, remove properties for internal stuff.
Make threadsafe.
Fix refcounting.
Prepare for switching targets, not all use cases work yet.
Original commit message from CVS:
* check/gst/gstghostpad.c: (GST_START_TEST), (gst_ghost_pad_suite):
Added some more tests for wrong hierarchy
* docs/design/part-overview.txt:
Some updates.
* gst/gstbin.c: (gst_bin_remove_func), (gst_bin_dispose):
Cleanups.
* gst/gstelement.c: (gst_element_remove_pad), (gst_element_seek),
(gst_element_dispose):
Some more cleanups.
* gst/gstpad.c: (gst_pad_link_check_compatible_unlocked),
(gst_pad_link_check_hierarchy), (gst_pad_link_prepare),
(gst_pad_get_caps_unlocked), (gst_pad_accept_caps),
(gst_pad_set_caps), (gst_pad_send_event):
Check for correct hierarchy when linking pads. Moving to
strict requirement for ghostpads when linking elements in
different bins.
* gst/gstpad.h:
Clean ups. Added WRONG_HIERARCHY return value.
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:
2005-06-27 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:
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.
