commit 8c03e67b06c84e4a21edd62906b8a0d7e12eeff9
author David Lin <dtwlin@google.com> Mon Feb 06 20:31:38 2017 -0800
committer David Lin <dtwlin@google.com> Wed Mar 01 19:43:42 2017 -0800
tree 127a1c79ff20862a163f779749431f940ebbae24
parent 240fc43222070bc9e19d70f5a38407d424ea34c1

hal: add usb audio tunnel support

This patch imports the USB audio tunnel feature from QCOM software release
AU_LINUX_ANDROID_LA.UM.5.7.R1.07.00.00.253.

Bug: 33030406
Test: playback, record and path switching

Change-Id: I2479f984c0d72b2f4e9b6a7db22eb4616855b7e7
Signed-off-by: David Lin <dtwlin@google.com>

hal/Android.mk

diff --git a/hal/Android.mk b/hal/Android.mk
index c2801db..062e3d3 100644
--- a/hal/Android.mk
+++ b/hal/Android.mk
@@ -74,6 +74,11 @@
   LOCAL_SRC_FILES +=  $(AUDIO_PLATFORM)/hw_info.c
 endif
 
+ifeq ($(strip $(AUDIO_FEATURE_ENABLED_USB_TUNNEL)),true)
+    LOCAL_CFLAGS += -DUSB_TUNNEL_ENABLED
+    LOCAL_SRC_FILES += audio_extn/usb.c
+endif
+
 LOCAL_SHARED_LIBRARIES := \
 	liblog \
 	libcutils \