Bluetooth: A2DP offload HIDL

Interface for Bluetooth A2DP offload feature.

Bug: 72242910
Test: Manual; TestTracker/148125
Change-Id: I3649800dfe3e1a2d66b76859be87e01ee58d2de0
(cherry picked from commit 4e95d81ef048bfdc33cee7cf8bdbe66603b30f96)

1 files changed, 74 insertions, 0 deletions

diff --git a/bluetooth/a2dp/1.0/default/BluetoothAudioOffload.cpp b/bluetooth/a2dp/1.0/default/BluetoothAudioOffload.cpp
new file mode 100644
index 00000000..2a66abe6
--- /dev/null
+++ b/bluetooth/a2dp/1.0/default/BluetoothAudioOffload.cpp
@@ -0,0 +1,74 @@
+/*
+ * 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.
+ */
+
+#include "BluetoothAudioOffload.h"
+
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace a2dp {
+namespace V1_0 {
+namespace implementation {
+
+IBluetoothAudioOffload* HIDL_FETCH_IBluetoothAudioOffload(const char* /* name */) {
+    return new BluetoothAudioOffload();
+}
+
+// Methods from ::android::hardware::bluetooth::a2dp::V1_0::IBluetoothAudioOffload follow.
+Return<::android::hardware::bluetooth::a2dp::V1_0::Status> BluetoothAudioOffload::startSession(
+    const sp<::android::hardware::bluetooth::a2dp::V1_0::IBluetoothAudioHost>& hostIf __unused,
+    const ::android::hardware::bluetooth::a2dp::V1_0::CodecConfiguration& codecConfig __unused) {
+    /**
+     * Initialize the audio platform if codecConfiguration is supported.
+     * Save the the IBluetoothAudioHost interface, so that it can be used
+     * later to send stream control commands to the HAL client, based on
+     * interaction with Audio framework.
+     */
+    return ::android::hardware::bluetooth::a2dp::V1_0::Status::FAILURE;
+}
+
+Return<void> BluetoothAudioOffload::streamStarted(
+    ::android::hardware::bluetooth::a2dp::V1_0::Status status __unused) {
+    /**
+     * Streaming on control path has started,
+     * HAL server should start the streaming on data path.
+     */
+    return Void();
+}
+
+Return<void> BluetoothAudioOffload::streamSuspended(
+    ::android::hardware::bluetooth::a2dp::V1_0::Status status __unused) {
+    /**
+     * Streaming on control path has suspend,
+     * HAL server should suspend the streaming on data path.
+     */
+    return Void();
+}
+
+Return<void> BluetoothAudioOffload::endSession() {
+    /**
+     * Cleanup the audio platform as remote A2DP Sink device is no
+     * longer active
+     */
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace a2dp
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android