The controller object was once copied from buzztards unit tests. Change
TestMonoSource to TestObj as it is not a full fledged element. Split the tests
into a core and library test suite.
Add a GstControlBinding class. This is a preparation for making the
controlsources generate double valued control curves and do the gparamspec
mapping in the control binding. Now the API in GstObject is again mostly
for convenience.
Move most of the code to a GstTimedValueControlSource. Split out the trigger
'interpolation mode' to a new control source class. Move tests and examples to
new api. Update docs.
Fixes#610338
Rename the last-buffer property to last-sample and make it return the new
GstSample type so that we can include caps and timing info in one nice bundle.
Make that implizit with attaching/detaching controlsources. This is a lot easier
and has less invalid state (controlled property without control source).
This make the controller even more lightweight (no extra object, no extra lock,
less indirections). For object that don't use the controller the only 'overhead'
is a 3 unused fields in the gst_object structure.
Make a new GstPadProbeInfo structure and pass this in the probe callback. This
allows us to add more things later and also allow the callback to replace or
modify the passed object.
Make a separate cookie to detect chancges in the list of probes and keeping
track of what hooks have been invoked yet.
Remove the requirement to have probes on srcpads in push mode and sinkpads in
pull mode.
Add some more debug.
Keep track of what callbacks got executed. If no callback is called and we are a
blocking pad, let the item pass. This allows you to block pads on selected
items only.
Explicitly have an UPSTREAM and DOWNSTREAM PadProbeType. This allows you to only
block the pad on upstream or downstream items.
Add convenience macros to only block on downstream/upstream items.
Better now than later in the cycle. These might come in handy:
sed -i -e 's/GstProbeReturn/GstPadProbeReturn/g' `git grep GstProbeReturn | sed -e 's/:.*//' | sort -u`
sed -i -e 's/GST_PROBE_/GST_PAD_PROBE_/g' `git grep GST_PROBE_ | sed -e 's/:.*//' | sort -u`
sed -i -e 's/GstProbeType/GstPadProbeType/g' `git grep GstProbeType | sed -e 's/:.*//' | sort -u`
There's no code that uses it other than multiqueue, so make it private
to multiqueue for now. That way we can also do optimisations that
require API/ABI breaks. If anyone ever wants to use it, we can still
make it public again.
Add an index to gst_buffer_take_memory() so that we can also insert memory at a
certain offset. This is mostly interesting to prepend a header memory block to
the buffer.
Keep track of installed number of probes to shortcut emission.
Allow NULL callbacks, this is useful for blocking probes.
Improve probe selection based on the mask, an empty mask for the data or the
scheduling flags equals that all probes match.
Add some more debug info.
Don't check the flushing flag in the probe callback handler, this needs to be
done before calling the handler.
Fix blocking probes.
Fix unit tests
Improve GstSegment, rename some fields. The idea is to have the GstSegment
structure represent the timing structure of the buffers as they are generated by
the source or demuxer element.
gst_segment_set_seek() -> gst_segment_do_seek()
Rename the NEWSEGMENT event to SEGMENT.
Make parsing of the SEGMENT event into a GstSegment structure.
Pass a GstSegment structure when making a new SEGMENT event. This allows us to
pass the timing info directly to the next element. No accumulation is needed in
the receiving element, all the info is inside the element.
Remove gst_segment_set_newsegment(): This function as used to accumulate
segments received from upstream, which is now not needed anymore because the
segment event contains the complete timing information.
This reverts commit 9ef1346b1f.
Way to much for one commit and I'm not sure we want to get rid of the pad caps
just like that. It's nice to have the buffer and its type in onw nice bundle
without having to drag the complete context with it.
Remove pad_alloc and all references. This can now be done more efficiently and
more flexible with the ALLOCATION query and the bufferpool objects. There is no
reverse negotiation yet but that will be done with an event later.
Avoid doing unnecessary pad-allocs when on passthrough mode.
If multiple basetransform elements are on a pipeline, they
would do a pad-alloc for each received buffer, each element
would do this, so we would have lots of pad allocs on the
pipeline for a single buffer being pushed through it.
This patch attempts to reduce this amount by avoiding
doing pad-allocs if the element has already done it
after the last pushed buffer. So it will only be allowed
to do a new pad-alloc after it has pushed a buffer, so we get
1x1 pad-alloc and buffer ratio
https://bugzilla.gnome.org/show_bug.cgi?id=642373
Add a function to retrieve a list of buffers containing the first N bytes from
the adapter. This can be done without a memcpy and should make it possible to
transfer the list to a GstBufferList later.
When basetransform received an unsupported caps on pad_alloc
it just returned not-negotiated. This patch makes it query
the allowed caps between his sinkpad and upstream's srcpad
to find a caps to suggest.
This happens when dinamically switching pipeline elements
and upstream pad_allocs with the previous caps that was
being used.
Fixes#614296
Add a new enable-last-buffer property. When false, it disables storing the last
received buffer in basesink::last-buffer. This can be useful in cases where
buffers need to be released asap.
API: GstBaseSink::enable-last-buffer
This changes some APIs in compatible ways:
- Some functions now take "const char *" arguments, not "char *"
- Some structs now have "conts char *" members, not "char *"
The changes may cause warnings when compiling with the right warning
flags. You've been warned.
Also adds -Wwrite-strings as a warning flag in configure.ac.
https://bugzilla.gnome.org/show_bug.cgi?id=611692
Adds that warning to configure.ac
Includes a tiny change of the GST_BOILERPLATE_FULL() macro:
The get_type() function is no longer declared before being defined.
https://bugzilla.gnome.org/show_bug.cgi?id=611692
Init variable to avoid compiler warning and make the build bot happy
(the compiler most likely complains about this because it doesn't know
here that fail_unless will abort/exit in the path where it fails).
Init variable to avoid compiler warning and make the build bot happy
(the compiler most likely complains about this because it doesn't know
here that fail_unless will abort/exit in the path where it fails).
Add a pattern scan function similar to the one recently added to
GstAdapter, and a unit test (based on the adapter one).
Fixes#585592.
API: add gst_byte_reader_masked_scan_uint32()
gst_adapter_masked_scan_uint32 could return values smaller than offset
if the first byte(s) of the mask are 0 and the pattern matches the
beginning of the adapter.
Added examples to documentation of gst_adapter_masked_scan_uint32().
Also added some more masked boundary tests.
Fixes#584118
Add a reasonably optimized new gst_adapter_masked_scan_uint32() function
to scan the adapter for a pattern after applying a mask.
Add some unit tests.
API: GstAdapter::gst_adapter_masked_scan_uint32()
Fixes#583187
When a are requested to take a buffer from the adapter that is exactly the
headbuffer, don't make a subbuffer of it but return that head buffer.
Add a unit-test for this new optimisation.
Original commit message from CVS:
* gst/gstbus.c: (gst_bus_dispose), (gst_bus_get_property),
(gst_bus_wakeup_main_context), (gst_bus_set_main_context),
(gst_bus_post), (gst_bus_source_prepare), (gst_bus_source_finalize),
(gst_bus_create_watch):
Make GstBusSource work with non-default main contexts (#562170).
* tests/check/gst/gstbus.c: (message_func_eos), (message_func_app),
(test_watch), (test_watch_with_custom_context), (gst_bus_suite):
Add test case for GstBusSource with a non-default main context.
* tests/check/libs/.cvsignore:
Ignore more.
Original commit message from CVS:
* tests/check/libs/controller.c: (GST_START_TEST):
This test should return TRUE now as syncing an uncontrolled
object will succeed now (there's nothing to sync).
Original commit message from CVS:
* tests/check/Makefile.am:
* tests/check/gst/gstabi.c:
* tests/check/gst/struct_sparc.h:
* tests/check/libs/libsabi.c:
* tests/check/libs/struct_sparc.h:
Add Sparc ABI checks
* tests/check/gst/gstvalue.c: (GST_START_TEST):
Cast signed integer to unsigned to avoid a compiler warning.
Original commit message from CVS:
* libs/gst/base/gstbasetransform.c:
(gst_base_transform_transform_caps),
(gst_base_transform_prepare_output_buffer),
(gst_base_transform_buffer_alloc), (gst_base_transform_suggest):
Don't overwrite the outsize when calculating the expected size of a new
buffer because we still need it in case we cannot process the new
buffer.
When converting the size of the new buffer to an upstream size, actually
use the expected size of the buffer, not some other random value.
Use an atomic int to signal that a new upstream caps suggestion is
available.
When we can convert the current buffer to a new format, check if the
buffer size is of the expected size and allocate a new buffer of the
expected size when this is not the case.
* tests/check/libs/transform1.c: (GST_START_TEST):
remove ifdeffed code from the unit test.
Original commit message from CVS:
* docs/design/part-block.txt:
Fix typo.
* docs/design/part-element-transform.txt:
Add notes about why transform needs to know input/output sizes.
Add some issues that need to be solved.
Add some more use cases.
* tests/check/libs/test_transform.c: (gst_test_trans_base_init),
(gst_test_trans_class_init), (result_sink_chain),
(result_buffer_alloc), (gst_test_trans_new), (gst_test_trans_free),
(gst_test_trans_push), (gst_test_trans_pop):
* tests/check/libs/transform1.c: (buffer_alloc_pt1),
(set_caps_pt1), (GST_START_TEST), (set_caps_pt2), (transform_ip_1),
(set_caps_1), (set_caps_ct1), (transform_ct1),
(transform_caps_ct1), (transform_size_ct1), (buffer_alloc_ct1),
(gst_basetransform_suite):
Add suport for different pad templates and buffer-alloc.
Add more checks for caps and buffer-alloc.
Add checks for proxy buffer alloc.
Add unit test for copy transform.
Original commit message from CVS:
* tests/check/Makefile.am:
* tests/check/libs/test_transform.c: (gst_test_trans_base_init),
(gst_test_trans_class_init), (gst_test_trans_init),
(gst_test_trans_set_data), (result_sink_chain),
(gst_test_trans_new), (gst_test_trans_free), (gst_test_trans_push),
(gst_test_trans_pop):
* tests/check/libs/transform1.c: (GST_START_TEST),
(transform_ip_1), (set_caps_1), (gst_basetransform_suite):
Add some test basetransform element and the beginnings of various
unit tests for it.
Original commit message from CVS:
* libs/gst/controller/gstinterpolation.c:
* libs/gst/controller/gstinterpolationcontrolsource.c:
* tests/check/libs/controller.c:
Rewrite handling of default values. Fix overflow with unsigned types
in linear interpolation. Remove now obsolete _first_value() function.
Add more tests. Fixes#538201.
Original commit message from CVS:
Patch by: Alexis Ballier <aballier at gentoo org>
* tests/check/gst/gstabi.c:
* tests/check/gst/struct_ppc64.h:
* tests/check/libs/libsabi.c:
* tests/check/libs/struct_ppc64.h:
Decide which header to include based on the userland ABI target
and not the kernel/cpu. Fix up structure sizes of ppc64 header
for 64-bit userland (#503590). Might need something similar for
x86 too.
Original commit message from CVS:
* tests/check/libs/controller.c:
* tests/check/libs/typefindhelper.c:
* tests/check/pipelines/parse-launch.c:
Don't use GST_PLUGIN_DEFINE_STATIC, it is not portable and is
going to be deprecated (see #498924).
Original commit message from CVS:
* libs/gst/base/gstbasesrc.c: (gst_base_src_send_event),
(gst_base_src_get_range), (gst_base_src_pad_get_range),
(gst_base_src_loop), (gst_base_src_set_flushing),
(gst_base_src_change_state):
Allow sending EOS to the source to make it send out an EOS event from
the streaming thread.
Update docs and deprecate the old NULL/READY shutdown method.
* tests/check/libs/basesrc.c: (GST_START_TEST),
(gst_basesrc_suite):
Add unit test for controlled shutdown.
Original commit message from CVS:
* tests/check/libs/controller.c: (GST_START_TEST):
Use fail_unless_equals_int(a, b) instead of
fail_unless_equals (a == b) to get better output on failures.
Original commit message from CVS:
reviewed by: Stefan Kost <ensonic@users.sf.net>
* libs/gst/controller/Makefile.am:
* libs/gst/controller/gstlfocontrolsource.c: (_calculate_pos),
(gst_lfo_waveform_get_type), (gst_lfo_control_source_reset),
(gst_lfo_control_source_new),
(gst_lfo_control_source_set_waveform),
(gst_lfo_control_source_bind), (gst_lfo_control_source_init),
(gst_lfo_control_source_finalize),
(gst_lfo_control_source_dispose),
(gst_lfo_control_source_set_property),
(gst_lfo_control_source_get_property),
(gst_lfo_control_source_class_init):
* libs/gst/controller/gstlfocontrolsource.h:
* libs/gst/controller/gstlfocontrolsourceprivate.h:
API: Add GstLFOControlSource, a control source that gives values
for specific timestamps based on several periodic waveforms.
Fixes#459717.
* tests/check/libs/controller.c: (GST_START_TEST),
(gst_controller_suite):
* docs/libs/gstreamer-libs-docs.sgml:
* docs/libs/gstreamer-libs-sections.txt:
* docs/libs/gstreamer-libs.types:
Add documentation and unit tests for GstLFOControlSource.
Original commit message from CVS:
Reviewed by: Stefan Kost <ensonic@users.sf.net>
* libs/gst/controller/Makefile.am:
* libs/gst/controller/gstcontroller.c:
(gst_controlled_property_add_interpolation_control_source),
(gst_controlled_property_new), (gst_controlled_property_free),
(gst_controller_find_controlled_property),
(gst_controller_new_valist), (gst_controller_new_list),
(gst_controller_new), (gst_controller_remove_properties_valist),
(gst_controller_remove_properties_list),
(gst_controller_remove_properties),
(gst_controller_set_property_disabled),
(gst_controller_set_disabled), (gst_controller_set_control_source),
(gst_controller_get_control_source), (gst_controller_get),
(gst_controller_sync_values), (gst_controller_get_value_array),
(_gst_controller_dispose), (gst_controller_get_type),
(gst_controlled_property_set_interpolation_mode),
(gst_controller_set), (gst_controller_set_from_list),
(gst_controller_unset), (gst_controller_unset_all),
(gst_controller_get_all), (gst_controller_set_interpolation_mode):
* libs/gst/controller/gstcontroller.h:
* libs/gst/controller/gstcontrollerprivate.h:
* libs/gst/controller/gstcontrolsource.c:
(gst_control_source_class_init), (gst_control_source_init),
(gst_control_source_get_value),
(gst_control_source_get_value_array), (gst_control_source_bind):
* libs/gst/controller/gstcontrolsource.h:
* libs/gst/controller/gsthelper.c: (gst_object_set_control_source),
(gst_object_get_control_source):
* libs/gst/controller/gstinterpolation.c:
(gst_interpolation_control_source_find_control_point_node),
(gst_interpolation_control_source_get_first_value),
(_interpolate_none_get), (interpolate_none_get),
(interpolate_none_get_boolean_value_array),
(interpolate_none_get_enum_value_array),
(interpolate_none_get_string_value_array),
(_interpolate_trigger_get), (interpolate_trigger_get),
(interpolate_trigger_get_boolean_value_array),
(interpolate_trigger_get_enum_value_array),
(interpolate_trigger_get_string_value_array):
* libs/gst/controller/gstinterpolationcontrolsource.c:
(gst_control_point_free), (gst_interpolation_control_source_reset),
(gst_interpolation_control_source_new),
(gst_interpolation_control_source_set_interpolation_mode),
(gst_interpolation_control_source_bind),
(gst_control_point_compare), (gst_control_point_find),
(gst_interpolation_control_source_set_internal),
(gst_interpolation_control_source_set),
(gst_interpolation_control_source_set_from_list),
(gst_interpolation_control_source_unset),
(gst_interpolation_control_source_unset_all),
(gst_interpolation_control_source_get_all),
(gst_interpolation_control_source_get_count),
(gst_interpolation_control_source_init),
(gst_interpolation_control_source_finalize),
(gst_interpolation_control_source_dispose),
(gst_interpolation_control_source_class_init):
* libs/gst/controller/gstinterpolationcontrolsource.h:
* libs/gst/controller/gstinterpolationcontrolsourceprivate.h:
API: Refactor GstController into the core controller which can take
a GstControlSource for providing actual values for timestamps.
Implement a interpolation control source and use this for backward
compatibility, deprecate a bunch of functions that are now handled
by GstControlSource or GstInterpolationControlSource.
Make it possible to disable the controller completely or only for
specific properties. Fixes#450711.
* docs/libs/gstreamer-libs-docs.sgml:
* docs/libs/gstreamer-libs-sections.txt:
* docs/libs/gstreamer-libs.types:
Add new functions and classes to the docs.
* tests/check/libs/controller.c: (GST_START_TEST),
(gst_controller_suite):
* tests/examples/controller/audio-example.c: (main):
Port unit test and example to the new API and add some new
unit tests.
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:
* 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/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:
* 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:
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:
* 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.
Original commit message from CVS:
2007-02-09 Andy Wingo <wingo@pobox.com>
* tests/check/Makefile.am (noinst_HEADERS):
* tests/check/libs/libsabi.c:
* tests/check/libs/struct_ppc32.h: Add ABI checks for PPC32.
* tests/check/gst/gstabi.c:
* tests/check/gst/struct_ppc32.h: Add ABI checks for PPC32.
Original commit message from CVS:
* tests/check/gst/gstabi.c:
* tests/check/gst/struct_hppa.h:
* tests/check/libs/libsabi.c:
* tests/check/libs/struct_hppa.h:
Add ABI structs for HPPA (see #393796).
Original commit message from CVS:
* Makefile.am:
* configure.ac:
* libs/gst/base/gstadapter.c: (gst_adapter_clear),
(gst_adapter_push), (gst_adapter_peek_into), (gst_adapter_peek),
(gst_adapter_flush), (gst_adapter_take), (gst_adapter_take_buffer):
* libs/gst/base/gstadapter.h:
* tests/check/libs/adapter.c: (create_and_fill_adapter),
(GST_START_TEST), (gst_adapter_suite):
* tests/examples/Makefile.am:
Do some optimisation work in GstAdapter to avoid copies in more cases.
It could still do slightly better by merging buffers when
gst_buffer_is_span_fast is true, but is already faster.
Also, avoid traversing a single-linked list to append each incoming
buffer inside the adapter.
Add simple test app that times the adapter behaviour in different
situations, and extend the unit test to check that bytes enter and
exit the adapter in their original order.
Original commit message from CVS:
* libs/gst/controller/gstcontroller.c: (gst_controller_new_list):
Fix refcounting here too, just like we did for _new_valist() a few
days ago (#357180) (thanks to René Stadler). Also remove all those
'Since: 0.9' from the gtk-doc blobs.
* tests/check/libs/controller.c: (controller_refcount_new_list),
(gst_controller_suite):
Unit test for the above.
Original commit message from CVS:
* tests/check/libs/controller.c: (GST_START_TEST),
(gst_controller_suite):
Add test for the previous fix; add some more tests
for correct refcounting behaviour; fix a few leaks
in test cases; call gst_controller_init() at start
of all tests.
Original commit message from CVS:
2006-08-11 Andy Wingo <wingo@pobox.com>
* configure.ac:
* libs/gst/dataprotocol/dataprotocol.c: (gst_dp_packetizer_new):
* tests/check/libs/gdp.c: (gst_dp_suite): GST_DISABLE_DEPRECATED
is only for users of API that don't want to see deprecated
functions in the headers; people that want to compile out
deprecated code should pass -DGST_REMOVE_DEPRECATED into the
CFLAGS. Fixes the build of multifdsink, or will soon..
Original commit message from CVS:
* libs/gst/controller/gstcontroller.h:
fix ABI size-correction
* tests/check/libs/gdp.c: (gst_dp_suite):
make tests that use deprecated API conditional
Original commit message from CVS:
* tests/check/libs/gdp.c: (gst_dp_suite):
Use the architecture information from config.h and not gcc macros
in order to properly disable a test that fails on PPC64.
Original commit message from CVS:
* libs/gst/dataprotocol/dataprotocol.c:
(gst_dp_header_from_buffer_any), (gst_dp_packet_from_caps_any),
(gst_dp_crc), (gst_dp_header_payload_length),
(gst_dp_header_payload_type), (gst_dp_packet_from_event),
(gst_dp_packet_from_event_1_0), (gst_dp_buffer_from_header),
(gst_dp_caps_from_packet), (gst_dp_event_from_packet_0_2),
(gst_dp_event_from_packet), (gst_dp_validate_header),
(gst_dp_validate_payload):
Make debug category static
Constify the crc table.
Do some more arg checking in public functions.
Fix some docs and do some small cleanups.
* tests/check/libs/gdp.c: (GST_START_TEST), (gst_dp_suite):
Add some more checks to see if GDP deals with bogus input.
