lavf: make avio_read_partial() public

Main use-case is proxying avio through a foreign I/O layer and a custom
AVIO context, without losing latency and performance characteristics.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Merged from Libav commit 173b56218f.
This commit is contained in:
wm4 2017-08-17 15:01:44 +02:00
parent 877076ffa1
commit 5d76674756
7 changed files with 16 additions and 12 deletions