lavfi/af_pan: fix sign handling in channel coefficient parser
authorMichael Roitzsch <reactorcontrol@icloud.com>
Sat, 18 Nov 2017 12:33:08 +0000 (13:33 +0100)
committerTobias Rapp <t.rapp@noa-archive.com>
Tue, 21 Nov 2017 13:04:10 +0000 (14:04 +0100)
commit752659ff1e0f6d9de93321f8b7e7c4ff741d0c8e
treef8d22788d2fd0edd1a33d874edb2b55fc8bc3d02
parent67c079383538e61deabd3fc0f504a12bfa0c6925
lavfi/af_pan: fix sign handling in channel coefficient parser

When a channel formula ends with a subtraction, the next formula will
otherwise have its first coefficient negated.

(cherry picked from commit 4f4e19914ddca5096bf7639c7c99a9045e436e8b)
libavfilter/af_pan.c