Is there an Android Java API for getting raw section and PES/ES data from an MP2TS?
MediaExtractor seems to be geared towards e.g. MP4 track/sample based formats and has no features for transport streams.
I can now definitively say that no such API exist - at least up to Android 7.
This is furthermore supported by the fact that Google's own Exoplayer implements transportstream parsing in software, to play HLS MPEG2-TS media:
Note that the MediaPlayer class may be able to play transport streams, but this is only required for HLS and RTP sources, according to the CDD: https://source.android.com/compatibility/7.1/android-7.1-cdd.pdf