1/* 2 * Copyright (C) 2019 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.hardware.automotive.evs@1.1; 18 19import @1.0::IEvsCameraStream; 20import @1.1::BufferDesc; 21import @1.1::EvsEventDesc; 22 23/** 24 * Implemented on client side to receive asynchronous streaming event deliveries. 25 */ 26interface IEvsCameraStream extends @1.0::IEvsCameraStream { 27 28 /** 29 * Receives calls from the HAL each time video frames is ready for inspection. 30 * Buffer handles received by this method must be returned via calls to 31 * IEvsCamera::doneWithFrame_1_1(). When the video stream is stopped via a call 32 * to IEvsCamera::stopVideoStream(), this callback may continue to happen for 33 * some time as the pipeline drains. Each frame must still be returned. 34 * When the last frame in the stream has been delivered, STREAM_STOPPED 35 * event must be delivered. No further frame deliveries may happen 36 * thereafter. 37 * 38 * A camera device will deliver the same number of frames as number of 39 * backing physical camera devices; it means, a physical camera device 40 * sends always a single frame and a logical camera device sends multiple 41 * frames as many as number of backing physical camera devices. 42 * 43 * @param buffer Buffer descriptors of delivered image frames. 44 */ 45 oneway deliverFrame_1_1(vec<BufferDesc> buffer); 46 47 /** 48 * Receives calls from the HAL each time an event happens. 49 * 50 * @param event EVS event with possible event information. 51 */ 52 oneway notify(EvsEventDesc event); 53}; 54