CyanogenMod/android_device_samsung_galaxys2-common — pull request #11 by pluginblank (2014-12-18 11:12:52+00:00)
Title: Edit AUDIO_CHANNEL_OUT_SURROUND with its value.

AUDIO_CHANNEL_OUT_SURROUND is not compiled in system/audio.h in the CM12 android_system_core branch. This is a workaround.