Original commit message from CVS:
* gst/gstvalue.c: (gst_value_deserialize_fraction):
Handle NULL input and output pointers silently as a failed conversion,
rather than g_warnings.
Original commit message from CVS:
* gst/gstvalue.c: (gst_value_serialize_flags):
fix a leak if no flags are set
* tests/check/gst/gstvalue.c: (GST_START_TEST):
fix leak in tests
Original commit message from CVS:
* gst/gstevent.c: (_gst_event_initialize):
* gst/gstformat.c: (_gst_format_initialize):
make sure some essential types used by events are registered
as part of gst_init()
* gst/gstvalue.c: (gst_value_serialize_flags):
if no flags are set, serialize them to a value that represents NONE
so that deserializing them works
* tests/check/gst/gstvalue.c: (GST_START_TEST), (gst_value_suite):
add tests for serialization and deserialization of flags
Original commit message from CVS:
* gst/gstvalue.c: (gst_value_serialize_flags):
Avoid NULL dereference when trying to serialize flags containing
invalid values.
Original commit message from CVS:
* gst/gstvalue.c: (gst_value_serialize_buffer),
(gst_value_deserialize_buffer):
Don't try to serialize a GValue with a NULL buffer.
Fixes#339821.
* tests/check/gst/gstvalue.c: (GST_START_TEST), (gst_value_suite):
Added check for serialisation of NULL buffers.
Original commit message from CVS:
* gst/gstvalue.c:
Document thread-unsafety of gst_value_register_foo_func()
when used at the same time as gst_value_foo() (#322628).
Original commit message from CVS:
* gst/gstbin.c: (gst_bin_get_type), (gst_bin_handle_message_func):
Help the compiler a bit with type registration.
Use existing forward cod path instead of duplicating it when
handling a message.
* gst/gstbus.c: (gst_bus_get_type):
* gst/gstcaps.c: (gst_caps_get_type), (gst_static_caps_get_type):
* gst/gstchildproxy.c: (gst_child_proxy_get_type):
* gst/gstclock.c: (gst_clock_get_type):
* gst/gstelement.c: (gst_element_get_type),
* gst/gstelementfactory.c: (gst_element_factory_get_type):
* gst/gstindexfactory.c: (gst_index_factory_get_type):
* gst/gstminiobject.c: (gst_mini_object_get_type):
* gst/gstpad.c: (gst_pad_get_type):
* gst/gstsegment.c: (gst_segment_get_type):
* gst/gststructure.c: (gst_structure_get_type):
* gst/gstsystemclock.c: (gst_system_clock_get_type):
* gst/gsttask.c: (gst_task_get_type), (gst_task_join):
* gst/gstvalue.c:
Help compiler with type registration.
* plugins/elements/gstqueue.c: (gst_queue_handle_sink_event):
Small doc update.
Original commit message from CVS:
* gst/gstvalue.c: (gst_value_transform_double_fraction):
floor is not needed, F is always positive; this obviates the
need for adding -lm when building without libxml
Original commit message from CVS:
add some explicit casts
update dsp files; also installs the debug build in \gstreamer\debug to separate it from the non-debug build
Original commit message from CVS:
* gst/gstvalue.c:
Improve documentation for gst_value_union().
* gst/gstvalue.h:
Change return value for union, intersect and subtract functions
from gint to gboolean.
Original commit message from CVS:
* docs/gst/gstreamer-sections.txt:
Update for new API and API changes.
* gst/gstobject.h:
Documentation fix: GST_TRYLOCK -> GST_OBJECT_TRYLOCK
* gst/gstvalue.c:
Documentation typo fix.
* gst/net/gstnettimepacket.c:
Documentation fixes for arguments.
Original commit message from CVS:
* gst/gstvalue.c: (gst_value_collect_fraction_range):
If needed, allocate storage in the destination value during
collection.
Original commit message from CVS:
* check/gst/gstcaps.c: (GST_START_TEST):
Extend caps string tests to check that a caps to string
conversion is reversible and produces the same caps.
* gst/gststructure.c: (gst_structure_value_get_generic_type):
Output "fraction" as the generic type fraction range, so caps
serialisation and deserialisation works.
* check/gst/capslist.h:
* gst/gstvalue.c: (gst_value_deserialize_fraction):
Support 'MIN' and 'MAX' for deserialising fractions.
Original commit message from CVS:
* check/gst/capslist.h:
* check/gst/gstcaps.c: (GST_START_TEST):
* check/gst/gstvalue.c: (GST_START_TEST), (gst_value_suite):
* gst/gststructure.c: (gst_structure_parse_range),
(gst_structure_fixate_field_nearest_fraction):
* gst/gststructure.h:
* gst/gstvalue.c: (gst_value_init_fraction_range),
(gst_value_free_fraction_range), (gst_value_copy_fraction_range),
(gst_value_collect_fraction_range),
(gst_value_lcopy_fraction_range), (gst_value_set_fraction_range),
(gst_value_set_fraction_range_full),
(gst_value_get_fraction_range_min),
(gst_value_get_fraction_range_max),
(gst_value_serialize_fraction_range),
(gst_value_transform_fraction_range_string),
(gst_value_compare_fraction_range),
(gst_value_deserialize_fraction_range),
(gst_value_intersect_fraction_fraction_range),
(gst_value_intersect_fraction_range_fraction_range),
(gst_value_subtract_fraction_fraction_range),
(gst_value_subtract_fraction_range_fraction),
(gst_value_subtract_fraction_range_fraction_range),
(gst_value_collect_fraction), (gst_value_fraction_multiply),
(gst_value_fraction_subtract), (gst_value_deserialize_fraction),
(gst_value_transform_string_fraction), (_gst_value_initialize):
* gst/gstvalue.h:
Implement fraction ranges and extend GstFraction to support
arithmetic subtraction, as well as deserialization from integer
strings such as "100"
Add a testsuite as for int and double range set operations
Original commit message from CVS:
2005-11-21 Andy Wingo <wingo@pobox.com>
* gst/gst.h: Include glib-compat.h.
* gst/glib-compat.h: Add G_GNUC_NULL_TERMINATED.
* gst/glib-compat.c: Include the public and the private header.
* gst/glib-compat-private.h: Copied here from glib-compat.h.
* gst/gstvalue.c:
* gst/gstpad.c:
* gst/gstregistryxml.c: s/glib-compat/glib-compat-private/.
Original commit message from CVS:
2005-11-21 Julien MOUTTE <julien@moutte.net>
* gst/gstvalue.c: (gst_value_intersect_array): Fix wrong
function calls for arrays.
Original commit message from CVS:
* gst/gstvalue.c: (gst_value_transform_fourcc_string),
(gst_value_serialize_fourcc):
* gst/gstvalue.h:
Drop leading '%' from GST_FOURCC_FORMAT, thus making it
consistent with our other format defines (#320324).
Original commit message from CVS:
* gst/gstvalue.c: (gst_value_is_fixed):
Revert previous commit. Value lists are by definition
not fixed, as they are a list of possible values.
Original commit message from CVS:
* check/gst/gstvalue.c: (GST_START_TEST), (gst_value_suite):
Add a deserialisation test for fractions
* examples/metadata/read-metadata.c: (message_loop),
(make_pipeline), (main):
Fix up metadata reading sample.
* gst/base/gstbasesink.c: (gst_base_sink_do_sync):
Debug format fix
* gst/base/gstbasesrc.c: (gst_base_src_default_negotiate):
Don't try and fixate empty caps
* gst/gst_private.h:
Wrap in G_BEGIN_DECLS/G_END_DECLS
* gst/gstvalue.c: (gst_value_collect_fraction),
(gst_value_set_fraction), (gst_value_get_fraction_denominator),
(gst_value_transform_string_fraction),
(gst_value_compare_fraction):
Add some extra guards to ensure that we don't end up
with an invalid denominator of 0 in a gstfraction and
that fractions always get reduced.
Original commit message from CVS:
2005-11-19 Andy Wingo <wingo@pobox.com>
* check/gst/gstvalue.c (test_string): Add test for bug #165650.
* gst/gstvalue.c (gst_string_wrap): Trying to serialize a NULL
string should produce an error, given the lack of a way to
represent NULL strings. Fixes#165650.
Original commit message from CVS:
2005-11-19 Andy Wingo <wingo@pobox.com>
* gst/gstvalue.h:
* gst/gstvalue.c (gst_value_array_append_value)
(gst_value_array_prepend_value, gst_value_array_get_size)
(gst_value_array_get_value): New API, copied from
gst_value_list_*, only operates on arrays.
(gst_value_list_append_value, gst_value_list_prepend_value)
(gst_value_list_concat, gst_value_list_get_size)
(gst_value_list_get_value): Only operate on lists. Fixes#156633.
* gst/gstvalue.c (gst_value_init_list_or_array): Renamed from
init_list, because it works on both.
(copy_garray_of_gstvalue): Renamed from gst_value_list_copy_array.
(gst_value_copy_list_or_array): Renamed from copy_list.
(gst_value_free_list_or_array): Renamed from free_list.
(gst_value_collect_list_or_array): Renamed from collect_list.
(gst_value_lcopy_list_or_array): Renamed from lcopy_list.
(gst_value_list_or_array_peek_pointer): Renamed from
list_peek_pointer.
(_gst_value_array_value_table, _gst_value_list_value_table):
Update value table functions.
(gst_value_compare_list_or_array): Renamed from compare_list.
Original commit message from CVS:
* docs/gst/gstreamer-sections.txt:
* gst/gstvalue.c: (gst_date_get_type), (_gst_value_initialize):
* gst/gstvalue.h:
give each value a _get_type, removes the DATA exports
Original commit message from CVS:
* gst/glib-compat.c: (gst_flags_get_first_value):
* gst/glib-compat.h:
* gst/gstvalue.c: (gst_value_deserialize_int_helper),
(gst_value_compare_double), (gst_value_serialize_flags):
GLib 2.6 g_flags_get_first_value has a bug that triggers an
infinite loop
Original commit message from CVS:
* gst/gstcaps.c:
* gst/gstevent.c:
doc updates
* gst/gstvalue.c: (gst_value_deserialize_int_helper):
don't use long long, it's not portable. Replacing with
gint64 seems to work; let's hope no skeletons fall out of the closet.
Original commit message from CVS:
2005-09-26 Andy Wingo <wingo@pobox.com>
* configure.ac:
* tests/Makefile.am:
* tests/memchunk: Remove memchunk benchmark stuff, this is taken
over by GLib bug 118439.
* gst/base/gstbasesink.c (gst_base_sink_wait): Factor out the wait
routines to a function.
* docs/libs/gstreamer-libs-sections.txt: I am a good person today.
* libs/gst/controller/gsthelper.c:
* libs/gst/controller/gstcontroller.h (gst_controller_sync_values)
(gst_object_sync_values): Renamed from sink_values. Ugh.
* libs/gst/controller/gsthelper.c: Update for __gst_controller_key.
* libs/gst/controller/gstcontroller.c (__gst_controller_key):
Renamed from controller_key, as it is exported.
* gst/gstvalue.c (_gst_value_initialize): Fake out the compiler.
Original commit message from CVS:
* docs/gst/gstreamer-sections.txt:
* gst/gststructure.c: (gst_structure_set_valist),
(gst_structure_get_date):
* gst/gststructure.h:
* gst/gstvalue.c: (gst_value_set_date), (gst_value_get_date),
(gst_date_copy), (gst_value_compare_date),
(gst_value_serialize_date), (gst_value_deserialize_date),
(gst_value_transform_date_string),
(gst_value_transform_string_date), (_gst_value_initialize):
* gst/gstvalue.h:
Add GST_TYPE_DATE, a boxed type that wraps GDate, and the usual
bunch of utility functions along with a hack that checks that
developers don't accidentally use G_TYPE_DATE where GST_TYPE_DATE
is required. Part of the grand scheme in #170777.
Original commit message from CVS:
* docs/gst/tmpl/.cvsignore:
* docs/gst/tmpl/gstvalue.sgml:
* gst/gstvalue.c:
* gst/gstvalue.h:
inlied another one and added some obvious docs
Original commit message from CVS:
* check/Makefile.am:
add two more tests for valgrinding
* check/gst/gstvalue.c: (GST_START_TEST):
test refcount of deserialized buffer, found a leak
* docs/gst/gstreamer-docs.sgml:
* docs/gst/gstreamer-sections.txt:
* docs/gst/gstreamer.types:
* docs/gst/tmpl/gstminiobject.sgml:
add miniobject to docs
* gst/gstminiobject.c:
add some docs
* gst/gstvalue.c: (gst_value_deserialize_buffer),
(gst_string_unwrap):
fix a hard-to-find invalid write for one of the tests
fix a leak for deserialized buffers
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:
* 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:
* 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:
* 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:
* gst/gstpad.c: Remove handling of filtered caps. Fix/merge
functions that handle filtered links.
* gst/gstpad.h: Remove 'appfilter' field and prototypes of
removed functions.
* gst/gstutils.c: Fix/remove utility functions that handle
filtered caps.
* gst/gstutils.h:
* gst/gstvalue.c: Add serialization/deserialization of caps
* gst/parse/grammar.y: Ignore filtered caps when linking. This
requires fixing so that the filter caps notation creates
a capsfilter element and sets the filter_caps property. I
think everyone probably wants to keep the shorthand notation.
* docs/gst/tmpl/gstelement.sgml: updates for API changes.
* docs/gst/tmpl/gstpad.sgml:
* gst/elements/gstelements.c: Register capsfilter element.
* gst/Makefile.am: fix spacing
* docs/random/ds/0.9-suggested-changes: random
Original commit message from CVS:
First THREADED backport attempt, focusing on adding locks and
making sure the API is threadsafe. Needs more work. More docs
follow this week.
Original commit message from CVS:
Reviewed by: Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* gst/gstvalue.c: (gst_string_wrap):
Allow NULL-strings as argument (#165365).
Original commit message from CVS:
* gst/gstvalue.c: (gst_value_deserialize_string):
use deprecated g_value_set_string_take_ownership to keep compatible
with glib 2.2
Original commit message from CVS:
* gst/gstvalue.c: (gst_value_deserialize_string):
revert last patch, only dom a g_utf8_validate now before accepting
the string - caps parsing strips " from strings so we can't rely on
them
* testsuite/caps/value_serialize.c: (test_string_deserialization):
disable a test that tested the above and comment it
Original commit message from CVS:
* gst/gstvalue.c: (gst_value_deserialize_string):
check that a simple string that gets deserialized does not contain
invalid characters
* testsuite/caps/value_serialize.c: (test_string_deserialization):
remove a test that tested a wring behaviour
Original commit message from CVS:
* gst/gstcaps.c: (gst_caps_is_fixed_foreach):
* gst/gstpad.c: (_gst_pad_default_fixate_value),
(_gst_pad_default_fixate_foreach):
* gst/gstvalue.c: (gst_type_is_fixed), (gst_value_is_fixed):
* gst/gstvalue.h:
Deprecate _type_is_fixed, use _value_is_fixed instead, since
in some cases (arrays), the fixedness depends on the content.
* gst/gstqueue.c: (gst_queue_handle_src_query):
Check for availability before doing something.
Original commit message from CVS:
* gst/gstelement.c: (gst_element_negotiate_pads):
simplify
* gst/gstvalue.c: (gst_string_wrap), (gst_string_unwrap),
(gst_value_serialize_string), (gst_value_deserialize_string):
add unwrapping of previously wrapped strings. Fix bug in wrapping
while at it.
* testsuite/caps/value_serialize.c: (test1),
(test_string_serialization), (test_string_deserialization), (main):
add tests for string (de)serialization
Original commit message from CVS:
* docs/random/ds/0.9-suggested-changes:
Make note about renaming fixed-list to array.
* gst/gstvalue.c: (gst_value_intersect_fixed_list),
(_gst_value_initialize):
Add array intersections.
* testsuite/caps/intersect2.c: (main):
Add test for array intersections.
Original commit message from CVS:
* gst/gstvalue.c: (gst_greatest_common_divisor):
use ints and return ints, fractions only use ints, too, so this
avoids accidently casting multiplications to unsigned
(gst_value_lcopy_fraction): it's ints, not uint32
(gst_value_set_fraction): disallow minint, multiplying and negation
are broken with it
(gst_value_fraction_multiply): fix to make large numbers work and get
rid of the assumption that the multiplication of two ints fits an
int64 - dunno if that's true for all systems
* testsuite/caps/Makefile.am:
* testsuite/caps/fraction-multiply-and-zero.c:
(check_multiplication), (check_equal), (zero_test), (main):
add tests for all the stuff above
* testsuite/caps/value_compare.c: (test1):
fix comment
* tests/.cvsignore:
* testsuite/caps/.cvsignore:
* testsuite/debug/.cvsignore:
* testsuite/dlopen/.cvsignore:
* testsuite/states/.cvsignore:
get up to date
Original commit message from CVS:
compatibility fixes for Solaris 8/gcc 2.95
* configure.ac:
include libintl libs in LDFLAGS
* gstvalue.c (gst_value_deserialize_buffer):
cast isxdigit stuff to int to silence compiler warning
Original commit message from CVS:
* configure.ac:
* gst/gstvalue.c: (gst_value_compare_enum),
(gst_value_serialize_enum), (gst_value_deserialize_enum),
(gst_value_can_compare), (gst_value_compare):
* testsuite/Makefile.am:
Fix enum serialization, deserialization, comparison in caps, add
a test to ensure that this continues working in the future.
Original commit message from CVS:
* gst/gstvalue.c: (gst_value_set_int_range):
test that start is smaller then end
* libs/gst/bytestream/Makefile.am:
* libs/gst/bytestream/filepad.c:
* libs/gst/bytestream/filepad.h:
add GstFilePad - a pad that behaves like a FILE*
* testsuite/bytestream/.cvsignore:
* testsuite/bytestream/Makefile.am:
* testsuite/bytestream/filepadsink.c:
test for the GstFilePad
Original commit message from CVS:
* gst/gstcaps.c: (gst_caps_structure_simplify):
don't print error messages when there is no error
* gst/gstvalue.c: (gst_value_compare_int_range):
compare the second value, too
* testsuite/caps/Makefile.am:
* testsuite/caps/random.c: (assert_on_error), (main):
add tests to make sure the two things above are checked for
Original commit message from CVS:
* gst/gstvalue.c: (gst_value_deserialize_int_helper):
fix int variable deserialization and add a helper so we can actually
debug this.
Original commit message from CVS:
* gst/gstvalue.c: (gst_strtoll), (CREATE_SERIALIZATION),
(CREATE_USERIALIZATION), (_gst_value_initialize),
(gst_value_compare_float), (gst_value_serialize_float),
(gst_value_deserialize_float), (gst_value_compare_enum),
(gst_value_serialize_enum), (gst_value_deserialize_enum):
add serialization and comparison functions for long, int64, enum and
float values
* gst/gstvalue.c: (gst_value_serialize), (gst_value_deserialize):
use best serialization function in type hierarchy instead of only a
matching one. This is required for enums to work.
* gst/parse/grammar.y:
use gst_caps_deserialize
* testsuite/parse/Makefile.am:
parse1 now works
* testsuite/parse/parse1.c: (main):
remove aggregator check, aggregator is broken, this test works now
but fails because of bug #138012
* testsuite/parse/parse2.c: (main):
s/xvideosink/xvimagesink - this test looks a lot like we should
disable it
Original commit message from CVS:
* docs/gst/tmpl/gstcaps.sgml:
* docs/gst/tmpl/gstfilesrc.sgml:
* docs/gst/tmpl/gststructure.sgml:
* docs/gst/tmpl/gstvalue.sgml:
update for recent API changes
* gst/gstcaps.c: (gst_caps_do_simplify):
fix to stop trying with a freed structure
* gst/gstpad.c: (gst_pad_link_fixate):
simplify caps
* gst/gstpad.c: (gst_pad_template_get_caps_by_name):
remove C++ comment
* gst/gstpad.h:
deprecate gst_pad_template_get_caps_by_name, it doesn't work anyway
* gst/gststructure.c: (gst_structure_value_get_generic_type),
(gst_structure_to_string):
keep the correct type when using lists of ranges
* gst/gstvalue.c: (gst_value_list_prepend_value),
(gst_value_list_append_value):
copy the value before adding to the list (d'oh)
* gst/gstvalue.c: (gst_value_subtract_int_range_int),
(gst_value_subtract_int_range_int_range):
handle overflows correctly
* gst/gstvalue.c: (gst_value_subtract_from_list):
fix memleak
* testsuite/caps/caps.h:
add a caps that caused segfaults
Original commit message from CVS:
* gst/gstcaps.c: (gst_caps_is_fixed_foreach):
* gst/gstpad.c: (_gst_pad_default_fixate_foreach):
* gst/gstvalue.c: (gst_value_serialize_buffer),
(gst_value_deserialize_buffer), (gst_type_is_fixed),
(_gst_value_initialize): Create a new function gst_type_is_fixed()
to indicate types that are fixed wrt caps or not. Switching to
this function fixes (bug #140298).
* gst/gstvalue.h:
Original commit message from CVS:
* gst/gstvalue.c: (gst_value_serialize_buffer),
(gst_value_deserialize_buffer), (_gst_value_initialize):
Register these types as fundamental types. (bug #140015)
Original commit message from CVS:
* gst/gstbuffer.c: (_gst_buffer_initialize), (gst_buffer_get_type),
(gst_buffer_free_chunk): Added gst_buffer_get_type() and changed
to using it.
* gst/gstbuffer.h: Changed GST_BUFFER_TYPE to gst_buffer_get_type()
* gst/gstcaps.c: (gst_caps_is_fixed_foreach): Buffer is a fixed type
* gst/gstpad.c: (_gst_pad_default_fixate_foreach): same
* gst/gststructure.c: (gst_structure_set_valist),
(gst_structure_from_abbr), (gst_structure_to_abbr): Add vararg
support for buffers.
* gst/gsttag.c: (gst_tag_register): Constify a prototype that was
intended to be const.
* gst/gsttag.h: same
* gst/gstvalue.c: (gst_value_serialize_buffer),
(gst_value_deserialize_buffer), (_gst_value_initialize): Add code
to (de)serialize buffers.
* testsuite/caps/Makefile.am: Add a bit of buffer testing
* testsuite/caps/string-conversions.c: (main):
* testsuite/caps/value_serialize.c: add new test
Original commit message from CVS:
* gst/gstvalue.c: (gst_value_union_int_int_range),
(gst_value_union_int_range_int_range), (gst_value_can_union),
(gst_value_union), (_gst_value_initialize): Add some union
implementations. We didn't have any previously.
* testsuite/caps/Makefile.am:
* testsuite/caps/audioscale.c: (gst_audioscale_expand_value),
(gst_audioscale_getcaps), (test_caps), (main): A little test
that is the same as the caps manipulation in audioscale.
