Original commit message from CVS:
2007-06-19 Andy Wingo <wingo@pobox.com>
* tests/check/pipelines/simple-launch-lines.c
(test_state_change_returns): Enable pull-mode tests now that
basesink has been fixed.
* libs/gst/base/gstbasesink.c (gst_base_sink_needs_preroll):
Changed from gst_base_sink_is_prerolled, reversing the sense of
the return value. Returns FALSE also if the sink is in pull mode,
in which case it needs no preroll.
(gst_base_sink_query, gst_base_sink_change_state): Update for
needs_preroll change.
(gst_base_sink_change_state): Add a case for READY_TO_PAUSED after
chaining up, in which we return SUCCESS directly if we activated
in pull mode instead of ASYNC. Involves countering an async_start
message sent before chaining up; not sure if this is correct, in
an ideal world we only send async-start when activating in push
mode.
Original commit message from CVS:
2007-06-19 Andy Wingo <wingo@pobox.com>
* tests/check/pipelines/simple-launch-lines.c
(test_state_change_returns): New test, partially disabled until
basesink is fixed.
Original commit message from CVS:
* gst/gstbin.c: (gst_bin_add_func), (gst_bin_remove_func),
(gst_bin_change_state_func), (bin_push_state_continue),
(bin_handle_async_start), (bin_handle_async_done),
(gst_bin_handle_message_func):
Move the common code for posting state-change messages into
one function.
Broadcast the state signal after we posted the messages.
Mark the bin as busy when it's doing a state-change.
Make sure async-start/done messages don't interfere with the bin's
state when it's busy.
After the state change, let the bin check which elements completed the
state change while it was busy so that it can update its state.
Original commit message from CVS:
* plugins/elements/gstmultiqueue.c: (apply_buffer),
(gst_single_queue_push_one), (gst_multi_queue_chain),
(gst_multi_queue_sink_event):
Make sure we don't reference the buffer/event after we have given away
ownership in the queue.
Original commit message from CVS:
* plugins/elements/gstmultiqueue.c: (gst_single_queue_flush),
(gst_multi_queue_chain), (gst_multi_queue_sink_event):
Update queue state _after_ adding the item in the queue because else we
could end up being full without the element added yet.
Original commit message from CVS:
* gst/gstbin.c: (gst_bin_init), (gst_bin_add_func),
(gst_bin_remove_func), (gst_bin_get_state_func),
(gst_bin_element_set_state), (gst_bin_continue_func),
(bin_push_state_continue), (bin_handle_async_start),
(bin_handle_async_done), (gst_bin_handle_message_func):
* gst/gstbin.h:
Immediatly commit the toplevel bin state when receiving an async-done
message. This enables us to avoid spawning a thread to commit the state
in some common cases and it also avoids some races.
Avoid spawning a state thread when adding/removing async elements to a
toplevel bin. Instead we immediatly update the bin state.
Get rid of iterating all the children when getting the state in the bin
because it is now always up-to-date.
Fix bug where locked elements would always return _SUCCESS even it they
returned NO_PREROLL before being locked.
Fix the order of the state_change, async-start/done messages that was
sometimes incorrect.
Mark the state_dirty field as deprecated, we don't need it anymore as we
are always up-to-date.
* gst/gstelement.c: (gst_element_get_state_func),
(gst_element_continue_state):
Small debug inprovements.
Return the previous element state return when nothing is pending instead
of blindly returning SUCCESS.
* tests/check/generic/sinks.c: (GST_START_TEST), (pad_blocked_cb),
(gst_sinks_suite):
Add a whole bunch of new testcases.
Original commit message from CVS:
* plugins/elements/gstmultiqueue.c: (gst_multi_queue_item_destroy),
(gst_multi_queue_item_new):
Don't use GSlice because we don't depend on >= 2.10 yet.
Original commit message from CVS:
* libs/gst/base/gstdataqueue.c: (gst_data_queue_cleanup),
(gst_data_queue_finalize), (gst_data_queue_locked_is_empty),
(gst_data_queue_set_flushing), (gst_data_queue_push),
(gst_data_queue_pop), (gst_data_queue_drop_head),
(gst_data_queue_limits_changed), (gst_data_queue_get_level):
* libs/gst/base/gstdataqueue.h:
Various cleanups.
Added methods to get the current levels and to inform the queue that the
'full' limits changed.
* plugins/elements/gstmultiqueue.c: (gst_multi_queue_init),
(gst_multi_queue_finalize), (gst_multi_queue_set_property),
(gst_single_queue_flush), (update_time_level), (apply_segment),
(apply_buffer), (gst_single_queue_push_one),
(gst_multi_queue_item_steal_object),
(gst_multi_queue_item_destroy), (gst_multi_queue_item_new),
(gst_multi_queue_loop), (gst_multi_queue_chain),
(gst_multi_queue_sink_activate_push), (gst_multi_queue_sink_event),
(gst_multi_queue_getcaps), (gst_multi_queue_src_activate_push),
(gst_multi_queue_src_query), (single_queue_overrun_cb),
(single_queue_underrun_cb), (single_queue_check_full),
(gst_single_queue_new):
Keep track of time in the queue by measuring the difference between
running_time on input and output. This gives more accurate results and
can compensate for segments correctly.
Make a queue by default only 5 buffers deep. We will now increase the
buffer size depending on the filledness of the other queues.
Factor out commong flush code.
Make sure we don't add additional refcounts to buffers when we can avoid
it.
Propagate GstFlowReturn differently.
Use GSlice for intermediate GstMultiQueueItems.
Keep track of EOS.
Resize queues on over and underruns based on filled level of other
queues.
When checking if the queue is filled, prefer to measure in time if we
can and fall back to bytes when no time is known.
* plugins/elements/gstqueue.c:
Fix return value.
Original commit message from CVS:
* libs/gst/base/gstbasetransform.c:
(gst_base_transform_sink_event):
Work around the brokenness of the event vmethod in basetransform. Prefer
to return TRUE when the subclass returned FALSE (meaning don't forward
the event).
* libs/gst/base/gstbasetransform.h:
Clarify the docs.
Original commit message from CVS:
* libs/gst/controller/gstcontroller.c:
(gst_controlled_property_set_interpolation_mode):
Fix wrong getter for enums in controller.
Original commit message from CVS:
* libs/gst/check/gstcheck.c: (gst_check_init):
Intercept criticals and warnings in the Gst-Phonon log domain, so
ASSERT_CRITICAL() etc. can be used in gst-phonon's unit tests as
well.
Original commit message from CVS:
* gst/gstparamspecs.c: (_gst_param_fraction_validate):
Since this file doesn't include "gst.h" it will not go through the
macros that disable GST_LOG if debugging was disabled.
Original commit message from CVS:
* libs/gst/check/Makefile.am:
* libs/gst/check/gstcheck.h:
* pkgconfig/gstreamer-check-uninstalled.pc.in:
* pkgconfig/gstreamer-check.pc.in:
Ugly 'fix' for the controller unit test on the p5 bot: in
fail_unless_equals_float() check whether the values are 'almost
equal' by allowing a small absolute error, which should be good
enough for our use cases (normal numbers and values close to 0).
Proper fixage left to floating point arithmetic aficionados.
Original commit message from CVS:
* libs/gst/base/gstbasesink.c: (gst_base_sink_reset_qos),
(gst_base_sink_render_object), (gst_base_sink_get_position):
Add two breaks thats where missing.
Original commit message from CVS:
* docs/libs/gstreamer-libs-sections.txt:
* libs/gst/check/gstcheck.h:
API: add fail_unless_equals_float() and assert_equals_float().
Add documentation for some of the macros.
* tests/check/libs/controller.c: (GST_START_TEST):
Use newly-added asserts.
Original commit message from CVS:
* gst/gstpad.c: (gst_pad_alloc_buffer_full), (gst_pad_push):
Show the caps change in the log to help spotting the case of not
exactly matching caps.
Original commit message from CVS:
* docs/plugins/Makefile.am:
* docs/plugins/gstreamer-plugins-docs.sgml:
* docs/plugins/gstreamer-plugins-sections.txt:
Pull fdsink into the docs too.
Original commit message from CVS:
* libs/gst/controller/gstinterpolation.c:
Actually use the new functions with min/max checks for the trigger and
none interpolation modes for get() and get_value_array() instead of
just the latter.
Original commit message from CVS:
* libs/gst/controller/gstcontroller.c:
(gst_controlled_property_free):
Unset the minimum and maximum GValues when freeing the corresponding
GstControllerProperty struct.
Original commit message from CVS:
* libs/gst/controller/gstcontroller.c:
(gst_controlled_property_new):
* libs/gst/controller/gstcontrollerprivate.h:
* libs/gst/controller/gstinterpolation.c:
(gst_controlled_property_find_control_point_node),
(interpolate_none_get), (interpolate_none_get_enum_value_array),
(interpolate_none_get_string_value_array),
(interpolate_trigger_get),
(interpolate_trigger_get_enum_value_array),
(interpolate_trigger_get_string_value_array):
Protect against values larger or smaller than the minimum or maximum
allowed value for the property when using values that can be compared.
Optimize trigger interpolator a bit by taking the last requested value
into account instead of always looping through the complete list.
Fix coding style a bit, everywhere else we use "return foo" instead
of "return (foo)".
* tests/check/libs/controller.c: (GST_START_TEST),
(gst_controller_suite):
Add unit test for the protection against too large or too small
values.
Original commit message from CVS:
* libs/gst/controller/gstinterpolation.c: (DEFINE_CUBIC_GET):
Use gst_util_guint64_to_gdouble for conversions.
* win32/common/libgstreamer.def:
Add new exported functions.
Original commit message from CVS:
* gst/gstbin.c: (find_message), (bin_replace_message), (is_eos),
(gst_bin_remove_func), (gst_bin_element_set_state),
(bin_handle_async_start), (bin_handle_async_done),
(gst_bin_handle_message_func):
Add helper function to find messages.
Generate the async-done messages together with the state change
messages.
Small cleanups in handling toplevel bins.
Original commit message from CVS:
* libs/gst/base/gstdataqueue.c:
* libs/gst/base/gstdataqueue.h:
* plugins/elements/gstmultiqueue.c: (gst_single_queue_push_one),
(gst_multi_queue_item_new), (gst_multi_queue_chain),
(gst_multi_queue_sink_event):
* tests/check/elements/multiqueue.c: (multiqueue_suite):
Fix multiqueue leaking buffers and events when downstream or the
queue are flushing. Make refcounting assumptions explicit and
document them (shouldn't break existing code that uses it other than
maybe leak miniobjects, but that already happens anyway). Add unit
test for the most common flushing case. Fixes#423700.
Original commit message from CVS:
* libs/gst/controller/gstcontroller.c:
Clarify docs: The get_all, get_value_array(s) functions
don't modify the GObject properties.
Original commit message from CVS:
* libs/gst/controller/gstcontroller.c:
(gst_controlled_property_set_interpolation_mode),
(gst_controlled_property_prepend_default),
(gst_controlled_property_new), (gst_controller_set_unlocked),
(gst_controller_set), (gst_controller_set_from_list),
(gst_controller_unset), (gst_controller_unset_all):
* libs/gst/controller/gstcontrollerprivate.h:
* libs/gst/controller/gstinterpolation.c:
Factor out the 'set' logic into gst_controller_set_unlocked for the
gst_controller_set and gst_controller_set_from_list functions.
To make life of the interpolators easier always add a control point
at timestamp zero with the default value.
In the linear interpolator make things more obvious by better variable
naming (slope).
Implement cubic interpolation mode (by using a natural cubic spline)
and map the quadratic interpolation mode to this too (as quadratic
doesn't make much sense, see discussion on the list).
* tests/check/libs/controller.c: (GST_START_TEST),
(gst_controller_suite):
Add unit test for the cubic interpolation mode and check everywhere
if the interpolation mode could be set as expected.
Original commit message from CVS:
* gst/gstparamspecs.c: (gst_param_spec_fraction_get_type):
Don't use GLib-2.10 functions, we still depend on
GLib-how-old-is-it-again-2.8.
Original commit message from CVS:
* gst/gstobject.c: (gst_object_class_init):
Fix signal signature.
* gst/gstsegment.c:
Add small clarification in the api docs.
* plugins/elements/gstfilesrc.c: (gst_file_src_set_location):
States are protected with object lock.
Original commit message from CVS:
* gst/gstbin.c: (bin_handle_async_done):
Make sure that the child bin stops after completing the async state
change so that the parent can continue the state change to PLAYING.
Fixes#441159.
Original commit message from CVS:
* libs/gst/base/gstcollectpads.c: (gst_collect_pads_finalize),
(unref_data), (gst_collect_pads_remove_pad),
(gst_collect_pads_check_pads):
Use additional refcounting to avoid crashes when dynamically adding and
removing pads. Fixes#420206.
Original commit message from CVS:
* tools/gst-launch.c: (event_loop):
When buffering goes from a two digit to a single digit number, make sure
to remove the old second digit by writing a blank over it.
Original commit message from CVS:
* tests/check/gst/gstbin.c: (GST_START_TEST):
Allow refcount of 3 and 4 because some state thread might still be busy
with it.
Original commit message from CVS:
* plugins/elements/Makefile.am:
* plugins/elements/gstmultiqueue.h:
* plugins/elements/gstqueue.h:
These are not installed headers, no need for padding.
Original commit message from CVS:
* gst/gstbin.c: (gst_bin_class_init), (gst_bin_get_state_func),
(gst_bin_continue_func):
Enable latency for next release.
Restore STATE_LOCK around recalc_state that was left out during the
rewrite and could result in racy behaviour when _get_state and
recalc_state are run concurrently. See #440463.
Original commit message from CVS:
* tests/check/gst/gstsystemclock.c: (store_callback),
(GST_START_TEST):
Improve test_async_order to also work when both timers are already
expired when we get scheduled to check it.
Original commit message from CVS:
* gst/gstbin.c: (gst_bin_init), (gst_bin_dispose),
(gst_bin_set_property), (gst_bin_get_property),
(gst_bin_remove_func), (gst_bin_handle_message_func):
* gst/gstbin.h:
'private' is a c++ keyword, let's not use that in header files,
otherwise c++ compilers will throw a tantrum.
Original commit message from CVS:
* plugins/elements/gstelements.c:
* plugins/elements/gstfilesink.c: (gst_file_sink_do_seek),
(gst_file_sink_get_current_offset):
* plugins/indexers/gstindexers.c: (plugin_init):
Use #ifdef for HAVE_XYZ for consistency.
* tests/check/Makefile.am:
* tests/check/elements/.cvsignore:
* tests/check/elements/filesink.c: (setup_filesink),
(cleanup_filesink), (GST_START_TEST), (filesink_suite):
Add some unit tests for filesink.
Original commit message from CVS:
Patch by: Mark Nauwelaerts <manauw at skynet be>
* plugins/elements/gstfilesink.c: (gst_file_sink_open_file),
(gst_file_sink_query), (gst_file_sink_do_seek),
(gst_file_sink_get_current_offset), (gst_file_sink_render):
* plugins/elements/gstfilesink.h:
Fix position reporting; rename data_written member to current_pos to
reflect its real meaning (fixes#412648).
Original commit message from CVS:
* docs/gst/gstreamer-sections.txt:
* gst/gstbin.c: (gst_bin_class_init), (gst_bin_init),
(gst_bin_dispose), (gst_bin_set_property), (gst_bin_get_property),
(gst_bin_remove_func), (gst_bin_handle_message_func):
* gst/gstbin.h:
Add a property for bins that handle the state change of their childs.
Fixes#435880
Original commit message from CVS:
* libs/gst/controller/gstinterpolation.c:
Use an array of the correct type when using _get_value_array with
linear interpolation.
Original commit message from CVS:
* libs/gst/controller/gstinterpolation.c:
(interpolate_trigger_get_enum_value_array),
(interpolate_trigger_get_string_value_array):
Add support for retrieving value arrays when using the trigger
interpolation mode.
Original commit message from CVS:
* libs/gst/controller/gstcontroller.c:
(gst_controller_get_value_array):
* libs/gst/controller/gstcontroller.h:
Clarify the docs of gst_controller_get_value_array(): The array where
the values should be written to must be allocated as there seems to be
no way to get the size of a random GType. This doesn't change any
behaviour. Also fix some typos all over the place and remove an unused,
commented function that is not necessary as g_object_set() could be
used instead.
* tests/check/libs/controller.c: (GST_START_TEST),
(gst_controller_suite):
Add unit test for gst_controller_get_value_array().
Original commit message from CVS:
* tests/check/gst/gstbuffer.c: (GST_START_TEST):
Disable part of the gst_buffer_try_new_and_alloc test, because
it can happily succeed on 64-bit systems where there's more address
space available.
Original commit message from CVS:
* tests/check/gst/gstpad.c: (GST_START_TEST), (gst_pad_suite):
Add unit test for the improved caps checking from bug #421543.
Original commit message from CVS:
* gst/gstpad.c: (gst_pad_get_caps_unlocked),
(gst_pad_acceptcaps_default), (gst_pad_configure_sink),
(gst_pad_configure_src):
Added simple version of improved caps checking. It was previously
assumed that a setcaps function would check the validity of the caps but
people prefer us to check caps against the template automatically.
Fixes#421543.
Original commit message from CVS:
* plugins/elements/gstqueue.c: (gst_queue_loop):
Hello, I am Mr Taymans' personal debugger. Today I will introduce a fix
for the subtle art of warning a potentially blocking thread that it
should check the source pad return value, and relay the information
upstream.
Original commit message from CVS:
reviewed by: Stefan Kost <ensonic@users.sf.net>
* libs/gst/controller/gstcontroller.c:
(gst_controller_suggest_next_sync), (gst_controller_sync_values),
(_gst_controller_get_property), (_gst_controller_set_property),
(_gst_controller_init), (_gst_controller_class_init):
* libs/gst/controller/gstcontroller.h:
* libs/gst/controller/gsthelper.c: (gst_object_suggest_next_sync),
(gst_object_get_control_rate), (gst_object_set_control_rate):
API: gst_controller_suggest_next_sync(), gst_object_suggest_next_sync()
Add API that provides sync suggestion timestamps for elements that
call gst_object_sync_values() from which those elements can subdivide
their processing loop to get the best results for the controlled
properties. For now it just suggests last_sync + control_rate as
new timestamp but this will be improved in the future.
While doing that change the control-rate property to a GstClockTime
from guint and change it's meaning from samples to nanoseconds as
the GstController doesn't know anything about sampling rate. Strictly
speaking this breaks ABI but as the control-rate property didn't do
anything in the past and as such couldn't be used this should be no
problem.
Original commit message from CVS:
reviewed by: Stefan Kost <ensonic@users.sf.net>
* libs/gst/controller/gstcontroller.c: (gst_controller_unset),
(gst_controller_unset_all):
* libs/gst/controller/gstcontrollerprivate.h:
* libs/gst/controller/gstinterpolation.c:
(gst_controlled_property_find_control_point_node):
Save last synced value from the list to continue searching from there
in future syncs. This speeds everything up a bit.
Original commit message from CVS:
reviewed by: Stefan Kost <ensonic@users.sf.net>
* libs/gst/controller/gstcontroller.c: (gst_control_point_compare),
(gst_control_point_find), (gst_controlled_property_new),
(gst_control_point_free), (gst_controlled_property_free),
(gst_controller_set), (gst_controller_set_from_list),
(gst_controller_unset), (gst_controller_unset_all),
(gst_controller_sync_values):
* libs/gst/controller/gstcontroller.h:
* libs/gst/controller/gstcontrollerprivate.h:
* libs/gst/controller/gstinterpolation.c:
(gst_controlled_property_find_control_point_node),
(interpolate_none_get), (interpolate_trigger_get):
Add a new private GstControlPoint struct which "inherits" from
GstTimedValue to allow different interpolators to store internal
values next to each control point. From the outside everything is
still a GstControlPoint so we don't loose binary compatibility.
Also fixup all the GValue handling to not leak GValues or list nodes.
* tests/check/libs/controller.c: (GST_START_TEST):
Free the list nodes and GValues in the controller_misc test.
Original commit message from CVS:
* gst/gstplugin.c: (gst_plugin_load_file):
If we fail to load a plugin because of unresolved symbols or missing
libraries and spew a warning to stderr, we may just as well mention
which plugin it was that failed to load.
Original commit message from CVS:
* docs/Makefile.am: the gtk-doc makefile snippet correctly
handles the case when ENABLE_GTK_DOC is false, and installs
the prebuilt documentation. So gtk-doc subdirs are
unconditionally enabled. Fixes: #349099.
Original commit message from CVS:
* gst/gstplugin.c: gst_plugin_register_func() doesn't actually
do anything with the passed "module" parameter, so remove it.
Allows removal of additional vestigal code.
Original commit message from CVS:
* gst/gstplugin.c:
Using sigaction should depend on HAVE_SIGACTION, not HAVE_WIN32.
Switch to using g_stat() because it's more portable.
Original commit message from CVS:
* gst/gst.c:
Add GST_DISABLE_OPTION_PARSING, in order to disable option
parsing for embedded systems.
* gst/gstelementfactory.c:
Allow gst_element_register() to be called with plugin==NULL.
Did nobody notice that static elements were broken?
Original commit message from CVS:
* tools/gst-launch.c: (event_loop):
Give more interesting info when buffering starts and stops.
Fix case where buffering starts but we fail to update the buffering flag
because the target state is not PLAYING.
Original commit message from CVS:
* plugins/elements/gstqueue.c: (gst_queue_init),
(gst_queue_finalize), (update_time_level), (apply_segment),
(apply_buffer), (gst_queue_locked_flush),
(gst_queue_locked_enqueue), (gst_queue_locked_dequeue),
(gst_queue_handle_sink_event), (gst_queue_chain),
(gst_queue_push_one), (gst_queue_loop):
* plugins/elements/gstqueue.h:
Refactor an cleanup queue a bit.
Do better time level calculations that also work when the srcpad is not
yet running.
Remove some unneeded debug lines.
* tests/check/elements/queue.c: (GST_START_TEST), (queue_suite):
Added testcase for time level measurement.
Try to make some stuff more racefree.
Original commit message from CVS:
Patch by: Jeroen Wouters <woutersj at gmail com>
* gst/gsturi.c: (gst_uri_get_protocol), (search_by_entry):
Treat protocol strings in a case-insensitive way (#437563).
Original commit message from CVS:
* gst/gstplugin.c: (gst_plugin_load_file):
* gst/gstregistry.c: (gst_registry_scan_path_level):
Don't print a g_warning for any failure to load a shared object.
Instead, push this down into gstplugin.c, and warn _only_ if we
failed to open the module (i.e. failure to link).
Avoids warnings on normal, working, non-plugin .so files.
Original commit message from CVS:
* gst/gstplugin.c (gst_plugin_load_file):
* gst/gstregistry.c (GST_CAT_DEFAULT,
gst_registry_lookup_feature_locked, gst_registry_scan_path_level):
Print a g_warning if there was an error when loading a plugins during
registry scan. The shuld help beginners starting with gst-plugin
template.
Original commit message from CVS:
* plugins/elements/gstqueue.c: (gst_queue_class_init),
(update_time_level), (gst_queue_locked_flush),
(gst_queue_handle_sink_event), (gst_queue_chain),
(gst_queue_push_one), (gst_queue_loop):
* plugins/elements/gstqueue.h:
Be smarter when calculating the current amount of data in the queue by
measuring the difference between start and end timestamps (in running
time) inside the queue. Fixes#432876.
API: GstQueue::pushing to notify elements that we are pushing data again
since the running signal is rather broken for this purpose.
Original commit message from CVS:
* plugins/elements/gstqueue.c (_do_init, gst_queue_signals,
gst_queue_base_init, gst_queue_init):
use GST_BOILERPLATE
Original commit message from CVS:
* win32/common/libgstreamer.def:
Add new exported functions.
* win32/vs6/grammar.dsp:
Use grammar pre-generated files.
Original commit message from CVS:
Based on patch by: Peter Kjellerstedt <pkj at axis com>
* gst/Makefile.am:
* gst/gstparse.c: (gst_parse_launchv), (gst_parse_launch):
* gst/gstparse.h:
* gst/gstutils.c: (gst_parse_bin_from_description):
* gst/gstutils.h:
Maintain API and ABI when --disable-parse is used. Now that
we have an appropriate error code, we can just return NULL and the
appropriate error when gst_parse_launch() is used despite it having
been disabled (#342564).
* tests/check/Makefile.am:
* tests/check/pipelines/.cvsignore:
* tests/check/pipelines/parse-disabled.c:
Make sure these functions exist and return NULL plus a GError when
--disable-parse is used.
Original commit message from CVS:
* tests/benchmarks/complexity.c: (main):
* tests/benchmarks/mass-elements.c: (main):
Set a good example and don't leak messages.
Original commit message from CVS:
* libs/gst/controller/gstcontroller.c:
(gst_controlled_property_set_interpolation_mode):
* libs/gst/controller/gstinterpolation.c:
Don't crash if someone tries to set an interpolation mode that
is invalid or that isn't supported yet. Fixes#422295.
* tests/check/libs/controller.c: (GST_START_TEST),
(gst_controller_suite):
Add a test case for the above.
