v1.3.0

decoder: join threads in flush mode

Test: mpeg2dec

v1.2.0

fix initialization of threads_active in decoder context

i4_threads_active in the decoder context was not initialized
correctly.

v1.1.0

Add LICENSE to fix lint warning

Bug: 266756673
Test: Review Presubmit lint warnings
Change-Id: I4a2c400738a6d0f9354e1203bd161706eafe023b