From 1e73cdc45c32872f14810a5f8a7762c7dbe4fdcd Mon Sep 17 00:00:00 2001
From: Jakub Pawlowski <jpawlowski@google.com>
Date: Wed, 21 Feb 2018 11:53:14 -0800
Subject: [PATCH] Add Hearing Aid output device

This output is used to send audio to Hearring Aid device.

Bug: 69623109
Test: mm
Change-Id: I6ffdb0a404efb645592624612c7ebc187fb933a6
---
 api/current.txt                               |  1 +
 media/java/android/media/AudioDeviceInfo.java | 10 +++++++++-
 media/java/android/media/AudioSystem.java     |  5 +++++
 3 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/api/current.txt b/api/current.txt
index 2a01cb1409fa0..f28f8206dfeaa 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -21905,6 +21905,7 @@ package android.media {
     field public static final int TYPE_FM_TUNER = 16; // 0x10
     field public static final int TYPE_HDMI = 9; // 0x9
     field public static final int TYPE_HDMI_ARC = 10; // 0xa
+    field public static final int TYPE_HEARING_AID = 23; // 0x17
     field public static final int TYPE_IP = 20; // 0x14
     field public static final int TYPE_LINE_ANALOG = 5; // 0x5
     field public static final int TYPE_LINE_DIGITAL = 6; // 0x6
diff --git a/media/java/android/media/AudioDeviceInfo.java b/media/java/android/media/AudioDeviceInfo.java
index 3d879f5a46602..86dfc9c887236 100644
--- a/media/java/android/media/AudioDeviceInfo.java
+++ b/media/java/android/media/AudioDeviceInfo.java
@@ -123,6 +123,10 @@ public final class AudioDeviceInfo {
      * A device type describing a USB audio headset.
      */
     public static final int TYPE_USB_HEADSET       = 22;
+    /**
+     * A device type describing a Hearing Aid.
+     */
+    public static final int TYPE_HEARING_AID   = 23;
 
     /** @hide */
     @IntDef(flag = false, prefix = "TYPE", value = {
@@ -144,7 +148,8 @@ public final class AudioDeviceInfo {
             TYPE_FM,
             TYPE_AUX_LINE,
             TYPE_IP,
-            TYPE_BUS }
+            TYPE_BUS,
+            TYPE_HEARING_AID }
     )
     @Retention(RetentionPolicy.SOURCE)
     public @interface AudioDeviceTypeOut {}
@@ -171,6 +176,7 @@ public final class AudioDeviceInfo {
             case TYPE_AUX_LINE:
             case TYPE_IP:
             case TYPE_BUS:
+            case TYPE_HEARING_AID:
                 return true;
             default:
                 return false;
@@ -367,6 +373,7 @@ public final class AudioDeviceInfo {
         INT_TO_EXT_DEVICE_MAPPING.put(AudioSystem.DEVICE_OUT_AUX_LINE, TYPE_AUX_LINE);
         INT_TO_EXT_DEVICE_MAPPING.put(AudioSystem.DEVICE_OUT_IP, TYPE_IP);
         INT_TO_EXT_DEVICE_MAPPING.put(AudioSystem.DEVICE_OUT_BUS, TYPE_BUS);
+        INT_TO_EXT_DEVICE_MAPPING.put(AudioSystem.DEVICE_OUT_HEARING_AID, TYPE_HEARING_AID);
 
         INT_TO_EXT_DEVICE_MAPPING.put(AudioSystem.DEVICE_IN_BUILTIN_MIC, TYPE_BUILTIN_MIC);
         INT_TO_EXT_DEVICE_MAPPING.put(AudioSystem.DEVICE_IN_BLUETOOTH_SCO_HEADSET, TYPE_BLUETOOTH_SCO);
@@ -415,6 +422,7 @@ public final class AudioDeviceInfo {
         EXT_TO_INT_DEVICE_MAPPING.put(TYPE_AUX_LINE, AudioSystem.DEVICE_OUT_AUX_LINE);
         EXT_TO_INT_DEVICE_MAPPING.put(TYPE_IP, AudioSystem.DEVICE_OUT_IP);
         EXT_TO_INT_DEVICE_MAPPING.put(TYPE_BUS, AudioSystem.DEVICE_OUT_BUS);
+        EXT_TO_INT_DEVICE_MAPPING.put(TYPE_HEARING_AID, AudioSystem.DEVICE_OUT_HEARING_AID);
     }
 }
 
diff --git a/media/java/android/media/AudioSystem.java b/media/java/android/media/AudioSystem.java
index be9fcb8fae835..3885f90176559 100644
--- a/media/java/android/media/AudioSystem.java
+++ b/media/java/android/media/AudioSystem.java
@@ -401,6 +401,7 @@ public class AudioSystem
     public static final int DEVICE_OUT_BUS = 0x1000000;
     public static final int DEVICE_OUT_PROXY = 0x2000000;
     public static final int DEVICE_OUT_USB_HEADSET = 0x4000000;
+    public static final int DEVICE_OUT_HEARING_AID = 0x8000000;
 
     public static final int DEVICE_OUT_DEFAULT = DEVICE_BIT_DEFAULT;
 
@@ -431,6 +432,7 @@ public class AudioSystem
                                               DEVICE_OUT_BUS |
                                               DEVICE_OUT_PROXY |
                                               DEVICE_OUT_USB_HEADSET |
+                                              DEVICE_OUT_HEARING_AID |
                                               DEVICE_OUT_DEFAULT);
     public static final int DEVICE_OUT_ALL_A2DP = (DEVICE_OUT_BLUETOOTH_A2DP |
                                                    DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES |
@@ -546,6 +548,7 @@ public class AudioSystem
     public static final String DEVICE_OUT_BUS_NAME = "bus";
     public static final String DEVICE_OUT_PROXY_NAME = "proxy";
     public static final String DEVICE_OUT_USB_HEADSET_NAME = "usb_headset";
+    public static final String DEVICE_OUT_HEARING_AID_NAME = "hearing_aid_out";
 
     public static final String DEVICE_IN_COMMUNICATION_NAME = "communication";
     public static final String DEVICE_IN_AMBIENT_NAME = "ambient";
@@ -628,6 +631,8 @@ public class AudioSystem
             return DEVICE_OUT_PROXY_NAME;
         case DEVICE_OUT_USB_HEADSET:
             return DEVICE_OUT_USB_HEADSET_NAME;
+        case DEVICE_OUT_HEARING_AID:
+            return DEVICE_OUT_HEARING_AID_NAME;
         case DEVICE_OUT_DEFAULT:
         default:
             return Integer.toString(device);