modify some right menu ui
add double speak
add reset volume value
commit prepare to support mpeg4 encoder
add mpeg4 decoder and play normal
modify popu menu positon
modify show real image zone when blank area is big.
add spit mpeg and jpeg headers.
add jpeg cache queue
insert jpeg after mpeg4
resolve occour exception sometimes when exit
add video choise on time
popu add all timestemp by order
add cache mpeg4 image
add mpeg play thread
split play mepg4 stream from main thread
remove mpeg4 decoder  from main
detach jpeg decoder from main thread
detach amr decoder from main thread
remove amr decoder from main thread