This patch adds overrides to support IntRange, Int64Range, DoubleRange,
FractionRange, Array and List. For integer ranges, it maps this
to python 'range'. Gst.IntRange() and Gst.Int64Range() are simple cast
to let the underlying code know which GType to use. To set such range in
python you will do:
structure["range"] = Gst.IntRange(range(0,10,2)))
Same for the 64 bit variant. And when you do:
r = structure.get_value("range")
A range will be returned directly, without the wrapper. For DoubleRange
and FractionRange, there is no native support in python. So the usage
will be:
structure["range"] = Gst.DoubleRange(0,10.0)
structure["range"] =
Gst.FractionRange(Gst.Fraction(1/30), Gst.Fraction(1/5)
When getting this value, Gst.DoubleRange and Gst.FractionRange class are
returned. They both have start/stop members. The naming was taken from
range type.
For Array and List, both uses the native list type, though they can be
constructed from any python sequence. So again, the class is just like
a cast, to let it pick the right GType and python list are being
returned.
structure["list"] = Gst.ValueList([1,2,3,4])
structure["array"] = Gst.ValueArray([1,2,3,4)
Using string and tuple could also work. Since Gst.ValueList/Array are
sequence, you can convert one to the other with:
list = Gst.ValueList([1,2,3,4])
array = Gst.ValueArray (list)
https://bugzilla.gnome.org/show_bug.cgi?id=753754
PyMethodDef arrays are supposed to end with an entry full of NULL/0 values.
This is missing in gst-python in the file gstmodule.c.
This causes out of bounds memory reads which can be seen / tested by compiling
gst-python with address sanitizer (-fsanitize=address in CFLAGS/LDFLAGS).
https://bugzilla.gnome.org/show_bug.cgi?id=762766
Python2 core checks that the first argument of a method is of the type
of the object if it does not have any info about the method, so when
using Gst not initialized it raiser a TypeError and not a
Gst.NotInitialized as expected.
+ And fix a typo
Summary:
We know that the bindings will get an extra ref but we know that
it is not actually needed, so we are safe to decrease the refcount
by one in that particular context making sure we give PyGI its
ref back when we are done.
Reviewers: Mathieu_Du
Differential Revision: http://phabricator.freedesktop.org/D41https://bugzilla.gnome.org/show_bug.cgi?id=746329
The FSF has moved since these files were created. Update the address, in
order to keep packaging tools such as rpmlint quiet.
Signed-off-by: Simon Farnsworth <simon.farnsworth@onelan.co.uk>
https://bugzilla.gnome.org/show_bug.cgi?id=715182
