Add hidl 2.2 for LE audio support

// This file is autogenerated by hidl-gen -Landroidbp.

package {

    // See: http://go/android-license-faq

    // A large-scale-change added 'default_applicable_licenses' to import

    // all of the 'license_kinds' from "hardware_interfaces_license"

    // to get the below license kinds:

    //   SPDX-license-identifier-Apache-2.0

    default_applicable_licenses: ["hardware_interfaces_license"],

}

hidl_interface {

    name: "android.hardware.bluetooth.audio@2.2",

    root: "android.hardware",

    srcs: [

        "types.hal",

        "IBluetoothAudioProvider.hal",

        "IBluetoothAudioProvidersFactory.hal",

    ],

    interfaces: [

        "android.hardware.audio.common@5.0",

        "android.hardware.bluetooth.audio@2.0",

        "android.hardware.bluetooth.audio@2.1",

        "android.hidl.base@1.0",

        "android.hidl.safe_union@1.0",

    ],

    apex_available: [

        "//apex_available:platform",

        "com.android.bluetooth.updatable",

    ],

    gen_java: false,

}

/*

 * 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);

};

/*

 * 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::IBluetoothAudioProvidersFactory;

/**

 * This factory allows a HAL implementation to be split into multiple

 * independent providers.

 *

 * When the Bluetooth stack is ready to create an audio session, it must first

 * obtain the IBluetoothAudioProvider for that session type by calling

 * openProvider().

 *

 * 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 IBluetoothAudioProvidersFactory extends @2.1::IBluetoothAudioProvidersFactory {

};

/*

 * 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::Lc3Parameters;

import @2.1::PcmParameters;

import @2.0::CodecConfiguration;

enum LeAudioMode : uint8_t {

    UNKNOWN = 0x00,

    UNICAST = 0x01,

    BROADCAST = 0x02,

};

struct UnicastStreamMap {

    /* The connection handle used for a unicast or a broadcast group. */

    uint16_t streamHandle;

    /* Audio channel allocation is  a bit field, each enabled bit means that given audio direction,

     * i.e. "left", or "right" is used. Ordering of audio channels comes from the least significant

     * bit to the most significant bit. */

    uint32_t audioChannelAllocation;

};

struct BroadcastStreamMap {

    /* The connection handle used for a unicast or a broadcast group. */

    uint16_t streamHandle;

    /* Audio channel allocation is  a bit field, each enabled bit means that given audio direction,

     * i.e. "left", or "right" is used. Ordering of audio channels comes from the least significant

     * bit to the most significant bit. */

    uint32_t audioChannelAllocation;

    Lc3Parameters lc3Config;

};

struct UnicastConfig {

    vec<UnicastStreamMap> streamMap;

    uint32_t peerDelay;

    Lc3Parameters lc3Config;

};

struct BroadcastConfig {

    vec<BroadcastStreamMap> streamMap;

};

struct LeAudioConfiguration {

    /* The mode of the LE audio */

    LeAudioMode mode;

    safe_union CodecConfig {

        UnicastConfig unicastConfig;

        BroadcastConfig broadcastConfig;

    } config;

};

/** Used to configure either a Hardware or Software Encoding session based on session type */

safe_union AudioConfiguration {

    PcmParameters pcmConfig;

    CodecConfiguration CodecConfig;

    LeAudioConfiguration leAudioCofiguration;

};

    </hal>

    <hal format="hidl" optional="true">

        <name>android.hardware.bluetooth.audio</name>

        <version>2.0-1</version>

        <version>2.0-2</version>

        <interface>

            <name>IBluetoothAudioProvidersFactory</name>

            <instance>default</instance>