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
30struct AHardwareBuffer;
31struct ANativeWindowBuffer;
32
33namespace android {
34
35// whether this AHardwareBuffer format is valid
36bool AHardwareBuffer_isValidPixelFormat(uint32_t ahardwarebuffer_format);
37
38// convert AHardwareBuffer format to HAL format (note: this is a no-op)
39uint32_t AHardwareBuffer_convertFromPixelFormat(uint32_t format);
40
41// convert HAL format to AHardwareBuffer format (note: this is a no-op)
42uint32_t AHardwareBuffer_convertToPixelFormat(uint32_t format);
43
44// convert AHardwareBuffer usage bits to HAL usage bits (note: this is a no-op)
45uint64_t AHardwareBuffer_convertFromGrallocUsageBits(uint64_t usage);
46
47// convert HAL usage bits to AHardwareBuffer usage bits  (note: this is a no-op)
48uint64_t AHardwareBuffer_convertToGrallocUsageBits(uint64_t usage);
49
50class GraphicBuffer;
51const GraphicBuffer* AHardwareBuffer_to_GraphicBuffer(const AHardwareBuffer* buffer);
52GraphicBuffer* AHardwareBuffer_to_GraphicBuffer(AHardwareBuffer* buffer);
53
54const ANativeWindowBuffer* AHardwareBuffer_to_ANativeWindowBuffer(const AHardwareBuffer* buffer);
55ANativeWindowBuffer* AHardwareBuffer_to_ANativeWindowBuffer(AHardwareBuffer* buffer);
56
57AHardwareBuffer* AHardwareBuffer_from_GraphicBuffer(GraphicBuffer* buffer);
58} // namespace android
59
60#endif // ANDROID_PRIVATE_NATIVE_AHARDWARE_BUFFER_HELPERS_H
61