GstFlagSet is a new type designed for negotiating sets
of boolean capabilities flags, consisting of a 32-bit
flags bitfield and 32-bit mask field. The mask field
indicates which of the flags bits an element needs to have
as specific values, and which it doesn't care about.
This allows efficient negotiation of arrays of boolean
capabilities.
The standard serialisation format is FLAGS:MASK, with
flags and mask fields expressed in hexadecimal, however
GstFlagSet has a gst_register_flagset() function, which
associates a new GstFlagSet derived type with an existing
GFlags gtype. When serializing a GstFlagSet with an
associated set of GFlags, it also serializes a human-readable
form of the flags for easier debugging.
It is possible to parse a GFlags style serialisation of a
flagset, without the hex portion on the front. ie,
+flag1/flag2/flag3+flag4, to indicate that
flag1 & flag4 must be set, and flag2/flag3 must be unset,
and any other flags are don't-care.
https://bugzilla.gnome.org/show_bug.cgi?id=746373
Original commit message from CVS:
* check/gst/capslist.h:
Comment test cases
* check/gst/gststructure.c: (GST_START_TEST),
(gst_structure_suite):
Test automatic value type detection in gst_structure_from_string.
* gst/gststructure.c: (gst_structure_parse_value):
Add fraction as a type we try and guess automatically in
caps/structure strings.
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:
patch by: Tim-Philipp Müller <tim at centricular dot net>
* gst/gststructure.c: (gst_structure_parse_field),
(gst_structure_from_string):
Forward-port a 0.8 patch to handle escaped spaces in structure string, so that gst_parse_launch() can deal with spaces in filtered link
caps (fixes#164479)
* check/gst/capslist.h:
* check/gst/gststructure.c: (GST_START_TEST):
add unit tests for this change
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
