Original commit message from CVS:
* ext/ladspa/gstsignalprocessor.c:
(gst_signal_processor_add_pad_from_template),
(gst_signal_processor_init), (gst_signal_processor_setcaps),
(gst_signal_processor_process), (gst_signal_processor_pen_buffer),
(gst_signal_processor_do_pulls), (gst_signal_processor_getrange),
(gst_signal_processor_sink_activate_push),
(gst_signal_processor_src_activate_pull),
(gst_signal_processor_change_state):
Add debugs logs here and there, add more error handling, add some
FIXME comments, filed #349189