Add hidl 2.2 for LE audio support
1. Add mode and difference config type for the unicast/broadcast
2. Support multiple audio configuration with broadcast
3. Add the streamMap for unicast/broadcast
Bug: 201292721
Bug: 150670922
Bug: 197297498
Test: m android.hardware.bluetooth.audio@2.2
Change-Id: Ib95850a7e56e9a03c5b400acdaf0625f0aa8726f
diff --git a/bluetooth/audio/2.2/IBluetoothAudioProvider.hal b/bluetooth/audio/2.2/IBluetoothAudioProvider.hal
new file mode 100644
index 0000000..ad8c839
--- /dev/null
+++ b/bluetooth/audio/2.2/IBluetoothAudioProvider.hal
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2021 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.hardware.bluetooth.audio@2.2;
+
+import @2.1::IBluetoothAudioProvider;
+import @2.0::IBluetoothAudioPort;
+import @2.0::Status;
+
+/**
+ * HAL interface from the Bluetooth stack to the Audio HAL
+ *
+ * The Bluetooth stack calls methods in this interface to start and end audio
+ * sessions and sends callback events to the Audio HAL.
+ *
+ * Note: For HIDL APIs with a "generates" statement, the callback parameter used
+ * for return value must be invoked synchronously before the API call returns.
+ */
+interface IBluetoothAudioProvider extends @2.1::IBluetoothAudioProvider {
+
+ /**
+ * This method indicates that the Bluetooth stack is ready to stream audio.
+ * It registers an instance of IBluetoothAudioPort with and provides the
+ * current negotiated codec to the Audio HAL. After this method is called,
+ * the Audio HAL can invoke IBluetoothAudioPort.startStream().
+ *
+ * Note: endSession() must be called to unregister this IBluetoothAudioPort
+ *
+ * @param hostIf An instance of IBluetoothAudioPort for stream control
+ * @param audioConfig The audio configuration negotiated with the remote
+ * device. The PCM parameters are set if software based encoding,
+ * otherwise the correct codec configuration is used for hardware
+ * encoding.
+ *
+ * @return status One of the following
+ * SUCCESS if this IBluetoothAudioPort was successfully registered with
+ * the Audio HAL
+ * UNSUPPORTED_CODEC_CONFIGURATION if the Audio HAL cannot register this
+ * IBluetoothAudioPort with the given codec configuration
+ * FAILURE if the Audio HAL cannot register this IBluetoothAudioPort for
+ * any other reason
+ * @return dataMQ The fast message queue for audio data from/to this
+ * provider. Audio data will be in PCM format as specified by the
+ * audioConfig.pcmConfig parameter. Invalid if streaming is offloaded
+ * from/to hardware or on failure.
+ */
+ startSession_2_2(IBluetoothAudioPort hostIf, AudioConfiguration audioConfig)
+ generates (Status status, fmq_sync<uint8_t> dataMQ);
+};