klte-common: Use low latency as primary audio output

* What Qualcomm was trying to fix was a real problem, it just created
  even more problems which are incredibly difficult to solve such as
  underruns and even broken apps (Loop reader, etc). Do it Google's
  way and forget it- it's a non-issue with offloading anyway.

Change-Id: I0e9194c85606745e801630e64e8e5d0c8b8dc022

BoardConfigCommon.mk

@@ -38,6 +38,7 @@ BOARD_HAVE_NEW_QCOM_CSDCLIENT := true
 AUDIO_FEATURE_DISABLED_ANC_HEADSET := true
 AUDIO_FEATURE_DISABLED_FM := true
 AUDIO_FEATURE_DISABLED_MULTI_VOICE_SESSIONS := true
+AUDIO_FEATURE_LOW_LATENCY_PRIMARY := true
 
 # Bluetooth
 BOARD_BLUEDROID_VENDOR_CONF := $(LOCAL_PATH)/bluetooth/vnd_klte.txt

audio/audio_policy.conf

@@ -50,12 +50,12 @@ audio_hw_modules {
         devices AUDIO_DEVICE_OUT_SPEAKER|AUDIO_DEVICE_OUT_EARPIECE|AUDIO_DEVICE_OUT_WIRED_HEADSET|AUDIO_DEVICE_OUT_WIRED_HEADPHONE|AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET|AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET|AUDIO_DEVICE_OUT_ALL_SCO
         flags AUDIO_OUTPUT_FLAG_DIRECT|AUDIO_OUTPUT_FLAG_VOIP_RX
       }
-      low_latency {
-        sampling_rates 44100|48000
+      deep_buffer {
+        sampling_rates 8000|11025|12000|16000|22050|24000|32000|44100|48000
         channel_masks AUDIO_CHANNEL_OUT_STEREO
         formats AUDIO_FORMAT_PCM_16_BIT
         devices AUDIO_DEVICE_OUT_EARPIECE|AUDIO_DEVICE_OUT_SPEAKER|AUDIO_DEVICE_OUT_WIRED_HEADSET|AUDIO_DEVICE_OUT_WIRED_HEADPHONE|AUDIO_DEVICE_OUT_ALL_SCO|AUDIO_DEVICE_OUT_AUX_DIGITAL|AUDIO_DEVICE_OUT_PROXY|AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET|AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET
-        flags AUDIO_OUTPUT_FLAG_FAST
+        flags AUDIO_OUTPUT_FLAG_DEEP_BUFFER
       }
     }
     inputs {