Re #1182:
 * support for format modification after creating video port (currently for renderer with active role only).
 * support for format modification after opening SDL renderer.



git-svn-id: https://svn.pjsip.org/repos/pjproject/branches/projects/2.0-dev@3431 74dad513-b988-da41-8d7b-12977e46ad98
8 files changed