commit 3807dd82ab48f9f85da6df225709877778b2f3f8
author Adrian Grange <agrange@google.com> Wed Feb 18 09:40:34 2015 -0800
committer Adrian Grange <agrange@google.com> Wed Mar 04 07:58:32 2015 -0800
tree d9ba57adb6b0e500e6966d0dd6f4fba1a4957047
parent 87d1a488ede4d3fa71f374c781520f2784ca3dfb

Make encoder buffer allocation dynamic

Frame buffers are now allocated dynamically on-demand.

Entries in the reference frame map, cm->ref_frame_map,
may now be set to -1 (INVALID_IDX) to indicate that
there is not a valid reference buffer in that "slot".

All slots in the reference frame map are now initialized
to the empty state (-1) and each buffer is initialized
to have a reference count of 0.

Change-Id: Id1afe98de98db4ae8b2dfefed7889c3b28c68582