Bluetooth: A2DP offload HIDL

Interface for Bluetooth A2DP offload feature.

Bug: 72242910
Test: Manual; TestTracker/148125
Change-Id: I3649800dfe3e1a2d66b76859be87e01ee58d2de0
(cherry picked from commit 4e95d81ef048bfdc33cee7cf8bdbe66603b30f96)
diff --git a/bluetooth/a2dp/1.0/default/BluetoothAudioOffload.h b/bluetooth/a2dp/1.0/default/BluetoothAudioOffload.h
new file mode 100644
index 0000000..5d07b5b
--- /dev/null
+++ b/bluetooth/a2dp/1.0/default/BluetoothAudioOffload.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+#ifndef ANDROID_HARDWARE_BLUETOOTH_A2DP_V1_0_BLUETOOTHAUDIOOFFLOAD_H
+#define ANDROID_HARDWARE_BLUETOOTH_A2DP_V1_0_BLUETOOTHAUDIOOFFLOAD_H
+
+#include <android/hardware/bluetooth/a2dp/1.0/IBluetoothAudioOffload.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace a2dp {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_memory;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::sp;
+
+struct BluetoothAudioOffload : public IBluetoothAudioOffload {
+    BluetoothAudioOffload() {}
+    // Methods from ::android::hardware::bluetooth::a2dp::V1_0::IBluetoothAudioOffload follow.
+    Return<::android::hardware::bluetooth::a2dp::V1_0::Status> startSession(
+        const sp<::android::hardware::bluetooth::a2dp::V1_0::IBluetoothAudioHost>& hostIf,
+        const ::android::hardware::bluetooth::a2dp::V1_0::CodecConfiguration& codecConfig) override;
+    Return<void> streamStarted(::android::hardware::bluetooth::a2dp::V1_0::Status status) override;
+    Return<void> streamSuspended(
+        ::android::hardware::bluetooth::a2dp::V1_0::Status status) override;
+    Return<void> endSession() override;
+};
+
+extern "C" IBluetoothAudioOffload* HIDL_FETCH_IBluetoothAudioOffload(const char* name);
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace a2dp
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_BLUETOOTH_A2DP_V1_0_BLUETOOTHAUDIOOFFLOAD_H