1 /* 2 * Copyright (C) 2017 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 #ifndef ANDROID_PRIVATE_NATIVE_AHARDWARE_BUFFER_HELPERS_H 18 #define ANDROID_PRIVATE_NATIVE_AHARDWARE_BUFFER_HELPERS_H 19 20 /* 21 * This file contains utility functions related to AHardwareBuffer, mostly to 22 * convert to/from HAL formats. 23 * 24 * These are PRIVATE methods, so this file can NEVER appear in a public NDK 25 * header. They are used by higher level libraries such as core/jni. 26 */ 27 28 #include <stdint.h> 29 30 struct AHardwareBuffer; 31 struct ANativeWindowBuffer; 32 33 namespace android { 34 35 // whether this AHardwareBuffer format is valid 36 bool AHardwareBuffer_isValidPixelFormat(uint32_t ahardwarebuffer_format); 37 38 // convert AHardwareBuffer format to HAL format (note: this is a no-op) 39 uint32_t AHardwareBuffer_convertFromPixelFormat(uint32_t format); 40 41 // convert HAL format to AHardwareBuffer format (note: this is a no-op) 42 uint32_t AHardwareBuffer_convertToPixelFormat(uint32_t format); 43 44 // convert AHardwareBuffer usage bits to HAL usage bits (note: this is a no-op) 45 uint64_t AHardwareBuffer_convertFromGrallocUsageBits(uint64_t usage); 46 47 // convert HAL usage bits to AHardwareBuffer usage bits (note: this is a no-op) 48 uint64_t AHardwareBuffer_convertToGrallocUsageBits(uint64_t usage); 49 50 class GraphicBuffer; 51 const GraphicBuffer* AHardwareBuffer_to_GraphicBuffer(const AHardwareBuffer* buffer); 52 GraphicBuffer* AHardwareBuffer_to_GraphicBuffer(AHardwareBuffer* buffer); 53 54 const ANativeWindowBuffer* AHardwareBuffer_to_ANativeWindowBuffer(const AHardwareBuffer* buffer); 55 ANativeWindowBuffer* AHardwareBuffer_to_ANativeWindowBuffer(AHardwareBuffer* buffer); 56 57 AHardwareBuffer* AHardwareBuffer_from_GraphicBuffer(GraphicBuffer* buffer); 58 } // namespace android 59 60 #endif // ANDROID_PRIVATE_NATIVE_AHARDWARE_BUFFER_HELPERS_H 61