audio/7.1/IDevice.hal

/*
 * Copyright (C) 2022 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.audio@7.1;

import android.hardware.audio.common@7.0;
import @7.0::AudioInOutFlag;
import @7.0::IDevice;
import @7.0::Result;
import IStreamIn;
import IStreamOut;

interface IDevice extends @7.0::IDevice {
    /**
     * This method creates and opens the audio hardware output stream.
     * If the stream can not be opened with the proposed audio config,
     * HAL must provide suggested values for the audio config.
     *
     * Note: INVALID_ARGUMENTS is returned both in the case when the
     * HAL can not use the provided config and in the case when
     * the value of any argument is invalid. In the latter case the
     * HAL must provide a default initialized suggested config.
     *
     * @param ioHandle handle assigned by AudioFlinger.
     * @param device device type and (if needed) address.
     * @param config stream configuration.
     * @param flags additional flags.
     * @param sourceMetadata Description of the audio that will be played.
                             May be used by implementations to configure hardware effects.
     * @return retval operation completion status.
     * @return outStream created output stream.
     * @return suggestedConfig in the case of rejection of the proposed config,
     *                         a config suggested by the HAL.
     */
    openOutputStream_7_1(
            AudioIoHandle ioHandle,
            DeviceAddress device,
            AudioConfig config,
            vec<AudioInOutFlag> flags,
            SourceMetadata sourceMetadata) generates (
                    Result retval,
                    IStreamOut outStream,
                    AudioConfig suggestedConfig);

    /**
     * This method creates and opens the audio hardware input stream.
     * If the stream can not be opened with the proposed audio config,
     * HAL must provide suggested values for the audio config.
     *
     * Note: INVALID_ARGUMENTS is returned both in the case when the
     * HAL can not use the provided config and in the case when
     * the value of any argument is invalid. In the latter case the
     * HAL must provide a default initialized suggested config.
     *
     * @param ioHandle handle assigned by AudioFlinger.
     * @param device device type and (if needed) address.
     * @param config stream configuration.
     * @param flags additional flags.
     * @param sinkMetadata Description of the audio that is suggested by the client.
     *                     May be used by implementations to configure processing effects.
     * @return retval operation completion status.
     * @return inStream in case of success, created input stream.
     * @return suggestedConfig in the case of rejection of the proposed config,
     *                         a config suggested by the HAL.
     */
    openInputStream_7_1(
            AudioIoHandle ioHandle,
            DeviceAddress device,
            AudioConfig config,
            vec<AudioInOutFlag> flags,
            SinkMetadata sinkMetadata) generates (
                    Result retval,
                    IStreamIn inStream,
                    AudioConfig suggestedConfig);
};