vorbisdec: reject channel mapping with less than two channels
authorAndreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Sun, 3 Jan 2016 18:20:54 +0000 (19:20 +0100)
committerAndreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Thu, 28 Jan 2016 01:15:49 +0000 (02:15 +0100)
commit7b6f04850610cbf6ef3a282423a89098ae02a57e
tree57041c880503ddb7c4ab2e5189e0bf7ff14289c3
parent33ad09205a9f41b0ab7ec6cc628ee08e40d906be
vorbisdec: reject channel mapping with less than two channels

It causes the angle channel number to equal the magnitude channel
number, which makes the stream undecodable according to the
specification.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
(cherry picked from commit b4b13848dec5420fa5dd9e1a7d4dfae5de1932d5)
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
libavcodec/vorbisdec.c