decoder: no parser stream mode interface improve . [1/1]

decoder: no parser stream mode interface improve . [1/1]

PD#SWPL-37019

Problem:
demux first packet data is not start from
stream buf start addr;
tsplayer do not need 2nd filed offset.

Solution:
1.correct decode start wp rp at first packet;
2.set 2nd field offset invalid for tsplayer pts lookup.

Verify:
ah212

Change-Id: Ib9abc1066252da76d5951144af29eb83947c81ba
Signed-off-by: shihong.zheng <shihong.zheng@amlogic.com>