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.graphics.allocator@2.0; 18 19 import android.hardware.graphics.mapper@2.0; 20 21 interface IAllocator { 22 /** 23 * Retrieves implementation-defined debug information, which will be 24 * displayed during, for example, `dumpsys SurfaceFlinger`. 25 * 26 * @return debugInfo is a string of debug information. 27 */ 28 @entry 29 @exit 30 @callflow(next="*") 31 dumpDebugInfo() generates (string debugInfo); 32 33 /** 34 * Allocates buffers with the properties specified by the descriptor. 35 * 36 * @param descriptor specifies the properties of the buffers to allocate. 37 * @param count is the number of buffers to allocate. 38 * @return error is NONE upon success. Otherwise, 39 * BAD_DESCRIPTOR when the descriptor is invalid. 40 * NO_RESOURCES when the allocation cannot be fulfilled at this 41 * time. 42 * UNSUPPORTED when any of the property encoded in the descriptor 43 * is not supported. 44 * @return stride is the number of pixels between two consecutive rows of 45 * the buffers, when the concept of consecutive rows is defined. 46 * Otherwise, it has no meaning. 47 * @return buffers is an array of raw handles to the newly allocated 48 * buffers. 49 */ 50 @entry 51 @exit 52 @callflow(next="*") 53 allocate(BufferDescriptor descriptor, uint32_t count) 54 generates (Error error, 55 uint32_t stride, 56 vec<handle> buffers); 57 }; 58
