Creates a new #GstByteWriter instance with the given initial data size.
Free-function: gst_byte_writer_free
Initial size of data
If %TRUE the data can't be reallocated
a new #GstByteWriter instance
ConstructionException GTK+ fails to create the object.
See Implementation
Creates a new #GstByteWriter instance with the given initial data size.
Free-function: gst_byte_writer_free