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>
Wed, 22 Nov 2017 09:42:07 +0000 (10:42 +0100)
commitca47e9ffdc656f31d5a79df74ec7a78fc4a938ee
tree8f6c21a514dfd11bd1cbe25189670aab58569644
parenta7aac19933a91e22d77b0b4dd4ecd61edf52d43f
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