GstAudio.AudioFilter is a GstBase.BaseTransform -derived base class for simple audio
filters, ie. those that output the same format that they get as input.
GstAudio.AudioFilter will parse the input format for you (with error checking)
before calling your setup function. Also, elements deriving from
GstAudio.AudioFilter may use GstAudio.AudioFilterClass.add_pad_templates() from
their class_init function to easily configure the set of caps/formats that
the element is able to handle.
Derived classes should override the GstAudio.AudioFilter.do_setup() and
GstBase.BaseTransform.do_transform_ip() and/or
GstBase.BaseTransform.do_transform()
virtual functions in their class_init function.
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classmethod
add_pad_templates(allowed_caps)
| Parameters: | allowed_caps (Gst.Caps) – what formats the filter can handle, as Gst.Caps |
|---|
Convenience function to add pad templates to this element class, with
allowed_caps as the caps that can be handled.
This function is usually used from within a GObject.Object class_init function.
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do_setup(info) virtual
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