1 /* 2 * Copyright (C) 2016 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 17 package android.hardware.automotive.evs@1.0; 18 19 20 /** 21 * Implemented on client side to receive asynchronous video frame deliveries. 22 */ 23 interface IEvsCameraStream { 24 25 /** 26 * Receives calls from the HAL each time a video frame is ready for inspection. 27 * Buffer handles received by this method must be returned via calls to 28 * IEvsCamera::doneWithFrame(). When the video stream is stopped via a call 29 * to IEvsCamera::stopVideoStream(), this callback may continue to happen for 30 * some time as the pipeline drains. Each frame must still be returned. 31 * When the last frame in the stream has been delivered, a NULL bufferHandle 32 * must be delivered, signifying the end of the stream. No further frame 33 * deliveries may happen thereafter. 34 */ 35 oneway deliverFrame(BufferDesc buffer); 36 }; 37
