Glenn Kasten 01aaf2c401 Simplify range check for audio_mode_t
AudioSystem::setMode previously allowed negative modes, but these were
then rejected by AudioFlinger.

Now negative modes (including AUDIO_MODE_INVALID and AUDIO_MODE_CURRENT)
are explicitly disallowed.

Change-Id: I0bac8fea737c8eb1f5b6afbb893e48739f88d745
2012-01-10 15:42:32 -08:00
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