From a971fd80d699f624ba8f7df10747ce87180ab31e Mon Sep 17 00:00:00 2001
From: liufeigit <woaicplusplus@gmail.com>
Date: Fri, 17 Jun 2016 12:44:53 +0800
Subject: [PATCH] Update voice_processing_audio_unit.mm

kAudioOutputUnitProperty_SetInputCallback for kAudioUnitScope_Global  bus is 0
---
 webrtc/modules/audio_device/ios/voice_processing_audio_unit.mm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/webrtc/modules/audio_device/ios/voice_processing_audio_unit.mm b/webrtc/modules/audio_device/ios/voice_processing_audio_unit.mm
index a9d599a0c4..3bb4daabe8 100644
--- a/webrtc/modules/audio_device/ios/voice_processing_audio_unit.mm
+++ b/webrtc/modules/audio_device/ios/voice_processing_audio_unit.mm
@@ -155,7 +155,7 @@ static void LogStreamDescription(AudioStreamBasicDescription description) {
   input_callback.inputProcRefCon = this;
   result = AudioUnitSetProperty(vpio_unit_,
                                 kAudioOutputUnitProperty_SetInputCallback,
-                                kAudioUnitScope_Global, kInputBus,
+                                kAudioUnitScope_Global, kOutputBus, // kAudioUnitScope_Global only one bus == 0 
                                 &input_callback, sizeof(input_callback));
   if (result != noErr) {
     DisposeAudioUnit();