Preprocessing in Hangout

[Hongyan]

HI, THere:

 

Recently we found out by default, all of preprocessing effects are commets out in audio_effects.conf:

 

# Default pre-processing library. Add to audio_effect.conf "libraries" section if
# audio HAL implements support for default software audio pre-processing effects
#
#  pre_processing {
#    path /system/lib/soundfx/libaudiopreprocessing.so
#  }

 

As a result, below error happens during one Hangout call:

This is normal because the library is not configred.

But we tested and found out Hangout removed the Near-end echo obviously, do you know how it's done? Is't possible Hangout enabled the preprocessing by another way, how we can turn if off?

We want to load vendor's preprocessing instead.

05-06 12:05:58.013  8298 11748 E AudioEffect: set(): AudioFlinger could not create effect, status: -22

05-06 12:05:58.013  8298 11748 E AudioEffects-JNI: AudioEffect initCheck failed -4

05-06 12:05:58.013  8298 11748 E AudioEffect-JAVA: Error code -4 when initializing AudioEffect.

05-06 12:05:58.013  8298 11748 W NoiseSuppressor: not implemented on this device null

05-06 12:05:58.013  2525  3065 W AudioFlinger: createEffect() effect not found

05-06 12:05:58.013  8298 11748 E AudioEffect: set(): AudioFlinger could not create effect, status: -22

05-06 12:05:58.013  8298 11748 E AudioEffects-JNI: AudioEffect initCheck failed -4

05-06 12:05:58.013  8298 11748 E AudioEffect-JAVA: Error code -4 when initializing AudioEffect.

05-06 12:05:58.013  8298 11748 W AcousticEchoCanceler: not implemented on this devicenull

05-06 12:05:58.013  2525  3064 W AudioFlinger: createEffect() effect not found

05-06 12:05:58.013  8298 11748 E AudioEffect: set(): AudioFlinger could not create effect, status: -22

05-06 12:05:58.013  8298 11748 E AudioEffects-JNI: AudioEffect initCheck failed -4

05-06 12:05:58.013  8298 11748 E AudioEffect-JAVA: Error code -4 when initializing AudioEffect.