Original commit message from CVS:
* gst/playback/Makefile.am:
* gst/playback/gstdecodebin2.c: (gst_decode_bin_get_type),
(_gst_boolean_accumulator), (gst_decode_bin_class_init),
(gst_decode_bin_factory_filter), (compare_ranks), (print_feature),
(gst_decode_bin_init), (gst_decode_bin_dispose),
(gst_decode_bin_finalize), (gst_decode_bin_set_property),
(gst_decode_bin_get_property), (gst_decode_bin_set_caps),
(gst_decode_bin_get_caps), (gst_decode_bin_autoplug_continue),
(gst_decode_bin_autoplug_sort), (analyze_new_pad), (connect_pad),
(connect_element), (expose_pad), (type_found),
(pad_added_group_cb), (pad_removed_group_cb),
(no_more_pads_group_cb), (pad_added_cb), (pad_removed_cb),
(no_more_pads_cb), (find_compatibles), (is_demuxer_element),
(are_raw_caps), (multi_queue_overrun_cb),
(multi_queue_underrun_cb), (gst_decode_group_new),
(get_current_group), (group_demuxer_event_probe),
(gst_decode_group_control_demuxer_pad),
(gst_decode_group_control_source_pad),
(gst_decode_group_check_if_blocked),
(gst_decode_group_check_if_drained), (gst_decode_group_expose),
(gst_decode_group_hide), (gst_decode_group_free),
(gst_decode_group_set_complete), (source_pad_blocked_cb),
(source_pad_event_probe), (gst_decode_pad_new), (add_fakesink),
(remove_fakesink), (find_sink_pad), (gst_decode_bin_change_state),
(plugin_init):
New decodebin2 element.
Closes #370092
* gst/playback/gstplay-marshal.list:
Added marshallers for new signals in decodebin2
* gst/playback/gstplaybasebin.c: (setup_subtitle), (make_decoder):
Use decodebin2 if *and only if* the USE_DECODEBIN2 environment variable
is set.