1 /* 2 * Copyright (C) 2018 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 package android.frameworks.bufferhub@1.0; 17 18 import android.hardware.graphics.common@1.2::HardwareBufferDescription; 19 import IBufferClient; 20 21 interface IBufferHub { 22 /** 23 * Allocates a new buffer. 24 * 25 * @param description The desired buffer parameters for the new buffer. 26 * @param userMetadataSize The size of the user defined metadata in bytes. 27 * @return status The result of this operation. NO_ERROR on success, 28 * error code on failure. 29 * @return bufferClient An bufferClient interface associated with 30 * the buffer just allocated. 31 * @return bufferTraits the struct containing the information of the buffer. 32 */ 33 allocateBuffer(HardwareBufferDescription description, 34 uint32_t userMetadataSize) 35 generates (BufferHubStatus status, 36 IBufferClient bufferClient, 37 BufferTraits bufferTraits); 38 39 /** 40 * Fetches a bufferClient interface from a provided handle. 41 * 42 * @param nativeHandle Handle received from allocateBuffer. 43 * @return status The result of this operation. NO_ERROR on success, 44 * error code on failure. 45 * @return bufferClient An bufferClient interface associated with 46 * the nativeHandle passed in. 47 * @return bufferTraits the struct containing the information of the buffer. 48 */ 49 importBuffer(handle nativeHandle) 50 generates (BufferHubStatus status, 51 IBufferClient bufferClient, 52 BufferTraits bufferTraits); 53 }; 54
