Make android.media.AudioFormat parcelable

Bug 22876530

Change-Id: If027715aad32ce8796a7e223ba51c301a3dd1192
diff --git a/api/current.txt b/api/current.txt
index 1022ee1..530828a 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -19706,12 +19706,14 @@
     field public static final int TYPE_WIRED_HEADSET = 3; // 0x3
   }
 
-  public class AudioFormat {
+  public class AudioFormat implements android.os.Parcelable {
+    method public int describeContents();
     method public int getChannelCount();
     method public int getChannelIndexMask();
     method public int getChannelMask();
     method public int getEncoding();
     method public int getSampleRate();
+    method public void writeToParcel(android.os.Parcel, int);
     field public static final deprecated int CHANNEL_CONFIGURATION_DEFAULT = 1; // 0x1
     field public static final deprecated int CHANNEL_CONFIGURATION_INVALID = 0; // 0x0
     field public static final deprecated int CHANNEL_CONFIGURATION_MONO = 2; // 0x2
@@ -19753,6 +19755,7 @@
     field public static final int CHANNEL_OUT_SIDE_RIGHT = 4096; // 0x1000
     field public static final int CHANNEL_OUT_STEREO = 12; // 0xc
     field public static final int CHANNEL_OUT_SURROUND = 1052; // 0x41c
+    field public static final android.os.Parcelable.Creator<android.media.AudioFormat> CREATOR;
     field public static final int ENCODING_AC3 = 5; // 0x5
     field public static final int ENCODING_DEFAULT = 1; // 0x1
     field public static final int ENCODING_DTS = 7; // 0x7
diff --git a/api/removed.txt b/api/removed.txt
index 0bf6594..3fe97b7 100644
--- a/api/removed.txt
+++ b/api/removed.txt
@@ -35,7 +35,7 @@
 
 package android.media {
 
-  public class AudioFormat {
+  public class AudioFormat implements android.os.Parcelable {
     ctor public AudioFormat();
   }
 
diff --git a/api/system-current.txt b/api/system-current.txt
index 0ed1ecb..d705834 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -21194,12 +21194,14 @@
     field public static final android.os.Parcelable.Creator<android.media.AudioFocusInfo> CREATOR;
   }
 
-  public class AudioFormat {
+  public class AudioFormat implements android.os.Parcelable {
+    method public int describeContents();
     method public int getChannelCount();
     method public int getChannelIndexMask();
     method public int getChannelMask();
     method public int getEncoding();
     method public int getSampleRate();
+    method public void writeToParcel(android.os.Parcel, int);
     field public static final deprecated int CHANNEL_CONFIGURATION_DEFAULT = 1; // 0x1
     field public static final deprecated int CHANNEL_CONFIGURATION_INVALID = 0; // 0x0
     field public static final deprecated int CHANNEL_CONFIGURATION_MONO = 2; // 0x2
@@ -21241,6 +21243,7 @@
     field public static final int CHANNEL_OUT_SIDE_RIGHT = 4096; // 0x1000
     field public static final int CHANNEL_OUT_STEREO = 12; // 0xc
     field public static final int CHANNEL_OUT_SURROUND = 1052; // 0x41c
+    field public static final android.os.Parcelable.Creator<android.media.AudioFormat> CREATOR;
     field public static final int ENCODING_AC3 = 5; // 0x5
     field public static final int ENCODING_DEFAULT = 1; // 0x1
     field public static final int ENCODING_DTS = 7; // 0x7
diff --git a/api/system-removed.txt b/api/system-removed.txt
index 27de913..aa4750a 100644
--- a/api/system-removed.txt
+++ b/api/system-removed.txt
@@ -26,7 +26,7 @@
 
 package android.media {
 
-  public class AudioFormat {
+  public class AudioFormat implements android.os.Parcelable {
     ctor public AudioFormat();
   }
 
diff --git a/api/test-current.txt b/api/test-current.txt
index e7f86aa..c10ffa7 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -19715,12 +19715,14 @@
     field public static final int TYPE_WIRED_HEADSET = 3; // 0x3
   }
 
-  public class AudioFormat {
+  public class AudioFormat implements android.os.Parcelable {
+    method public int describeContents();
     method public int getChannelCount();
     method public int getChannelIndexMask();
     method public int getChannelMask();
     method public int getEncoding();
     method public int getSampleRate();
+    method public void writeToParcel(android.os.Parcel, int);
     field public static final deprecated int CHANNEL_CONFIGURATION_DEFAULT = 1; // 0x1
     field public static final deprecated int CHANNEL_CONFIGURATION_INVALID = 0; // 0x0
     field public static final deprecated int CHANNEL_CONFIGURATION_MONO = 2; // 0x2
@@ -19762,6 +19764,7 @@
     field public static final int CHANNEL_OUT_SIDE_RIGHT = 4096; // 0x1000
     field public static final int CHANNEL_OUT_STEREO = 12; // 0xc
     field public static final int CHANNEL_OUT_SURROUND = 1052; // 0x41c
+    field public static final android.os.Parcelable.Creator<android.media.AudioFormat> CREATOR;
     field public static final int ENCODING_AC3 = 5; // 0x5
     field public static final int ENCODING_DEFAULT = 1; // 0x1
     field public static final int ENCODING_DTS = 7; // 0x7
diff --git a/api/test-removed.txt b/api/test-removed.txt
index 0bf6594..3fe97b7 100644
--- a/api/test-removed.txt
+++ b/api/test-removed.txt
@@ -35,7 +35,7 @@
 
 package android.media {
 
-  public class AudioFormat {
+  public class AudioFormat implements android.os.Parcelable {
     ctor public AudioFormat();
   }
 
diff --git a/media/java/android/media/AudioFormat.aidl b/media/java/android/media/AudioFormat.aidl
new file mode 100644
index 0000000..8613f55
--- /dev/null
+++ b/media/java/android/media/AudioFormat.aidl
@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.media;
+
+parcelable AudioFormat;
diff --git a/media/java/android/media/AudioFormat.java b/media/java/android/media/AudioFormat.java
index 000a56d..22f4f04 100644
--- a/media/java/android/media/AudioFormat.java
+++ b/media/java/android/media/AudioFormat.java
@@ -18,10 +18,13 @@
 
 import android.annotation.IntDef;
 import android.annotation.NonNull;
+import android.os.Parcel;
+import android.os.Parcelable;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.util.Arrays;
+import java.util.Objects;
 
 /**
  * The {@link AudioFormat} class is used to access a number of audio format and
@@ -209,7 +212,7 @@
  * AudioTrack.getPlaybackHeadPosition()}),
  * depending on the context where audio frame is used.
  */
-public class AudioFormat {
+public class AudioFormat implements Parcelable {
 
     //---------------------------------------------------------
     // Constants
@@ -874,6 +877,44 @@
     }
 
     @Override
+    public int hashCode() {
+        return Objects.hash(mPropertySetMask, mSampleRate, mEncoding, mChannelMask,
+                mChannelIndexMask);
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeInt(mPropertySetMask);
+        dest.writeInt(mEncoding);
+        dest.writeInt(mSampleRate);
+        dest.writeInt(mChannelMask);
+        dest.writeInt(mChannelIndexMask);
+    }
+
+    private AudioFormat(Parcel in) {
+        mPropertySetMask = in.readInt();
+        mEncoding = in.readInt();
+        mSampleRate = in.readInt();
+        mChannelMask = in.readInt();
+        mChannelIndexMask = in.readInt();
+    }
+
+    public static final Parcelable.Creator<AudioFormat> CREATOR =
+            new Parcelable.Creator<AudioFormat>() {
+        public AudioFormat createFromParcel(Parcel p) {
+            return new AudioFormat(p);
+        }
+        public AudioFormat[] newArray(int size) {
+            return new AudioFormat[size];
+        }
+    };
+
+    @Override
     public String toString () {
         return new String("AudioFormat:"
                 + " props=" + mPropertySetMask