DynamicCamera: Add new hidl interface ICameraInjectionSession for injection camera

        "types.hal",

        "ICameraDevice.hal",

        "ICameraDeviceSession.hal",

        "ICameraInjectionSession.hal",

    ],

    interfaces: [

        "android.hardware.camera.common@1.0",

/*

 * Copyright (C) 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.camera.device@3.7;

import android.hardware.camera.common@1.0::Status;

import @3.2::BufferCache;

import @3.2::CameraMetadata;

import @3.5::StreamConfiguration;

import @3.6::HalStreamConfiguration;

import @3.7::ICameraDeviceSession;

/**

 * Injection Camera device active session interface.

 *

 * When an external camera is injected to replace the internal camera session, the

 * injection session will be established in camera framework, and then

 * configureInjectionStreams() will be called to ask the external camera to

 * configure itself to match the stream configuration of the internal camera.

 *

 * Camera framework is responsible to close the injection session once the client

 * switch back to internal camera streaming.

 *

 * If the external camera cannot support the configuration ILLEGAL_ARGUMENT will

 * be returned.

 */

interface ICameraInjectionSession extends @3.7::ICameraDeviceSession {

    /**

     * configureInjectionStreams:

     *

     * Identical to @3.7::ICameraDeviceSession.configureStreams_3_7, except that:

     *

     * @param requestedConfiguration

     *     The current stream configuration of the internal camera session and

     *     the injection camera must follow the configuration without overriding

     *     any part of it.

     * @param characteristics

     *     The characteristics of internal camera contains a list of keys so that

     *     the stream continuity can be maintained after the external camera is

     *     injected.

     *

     * @return status Status code for the operation, one of:

     *     OK:

     *         On successful stream configuration.

     *     INTERNAL_ERROR:

     *         If there has been a fatal error and the device is no longer

     *         operational. Only close() can be called successfully by the

     *         framework after this error is returned.

     *     ILLEGAL_ARGUMENT:

     *         If the requested stream configuration is invalid. Some examples

     *         of invalid stream configurations include:

     *           - Not including any OUTPUT streams

     *           - Including streams with unsupported formats, or an unsupported

     *             size for that format.

     *           - Including too many output streams of a certain format.

     *           - Unsupported rotation configuration

     *           - Stream sizes/formats don't satisfy the

     *             StreamConfigurationMode requirements

     *             for non-NORMAL mode, or the requested operation_mode is not

     *             supported by the HAL.

     *           - Unsupported usage flag

     *         The camera service cannot filter out all possible illegal stream

     *         configurations, since some devices may support more simultaneous

     *         streams or larger stream resolutions than the minimum required

     *         for a given camera device hardware level. The HAL must return an

     *         ILLEGAL_ARGUMENT for any unsupported stream set, and then be

     *         ready to accept a future valid stream configuration in a later

     *         configureInjectionStreams call.

     */

    configureInjectionStreams(StreamConfiguration requestedConfiguration,

            CameraMetadata characteristics) generates (Status status);

};