content: /*
   * Copyright (C) 2015 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.camera2.impl;
  
  /**
   * Internal interface for CameraDeviceImpl to CameraCaptureSessionImpl(s) communication
   */
  public interface CameraCaptureSessionCore {
  
      /**
       * Replace this session with another session.
       *
       * <p>This is an optimization to avoid unconfiguring and then immediately having to
       * reconfigure again.</p>
       *
       * <p>The semantics are identical to {@link #close}, except that unconfiguring will be skipped.
       * </p>
       *
       * <p>After this call completes, the session will not call any further methods on the camera
       * device.</p>
       *
       * @see CameraCaptureSession#close
       */
      void replaceSessionClose();
  
      /**
       *
       * Create an internal state callback, to be invoked on the mDeviceHandler
       *
       * <p>It has a few behaviors:
       * <ul>
       * <li>Convert device state changes into session state changes.
       * <li>Keep track of async tasks that the session began (idle, abort).
       * </ul>
       * </p>
       * */
      CameraDeviceImpl.StateCallbackKK getDeviceStateCallback();
  
      /**
       * Whether currently in mid-abort.
       *
       * <p>This is used by the implementation to set the capture failure
       * reason, in lieu of more accurate error codes from the camera service.
       * Unsynchronized to avoid deadlocks between simultaneous session->device,
       * device->session calls.</p>
       *
       */
      boolean isAborting();
  
  }
  