1 /*
2 * Copyright (C) 2022 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 #include "Utils.h"
18
19 #include <aidl/android/hardware/automotive/evs/BufferDesc.h>
20 #include <aidlcommonsupport/NativeHandle.h>
21 #include <android-base/logging.h>
22
23 namespace {
24
25 using aidl::android::hardware::automotive::evs::BufferDesc;
26 using aidl::android::hardware::common::NativeHandle;
27 using aidl::android::hardware::graphics::common::HardwareBuffer;
28
dupNativeHandle(const NativeHandle & handle)29 NativeHandle dupNativeHandle(const NativeHandle& handle) {
30 NativeHandle dup;
31
32 dup.fds = std::vector<::ndk::ScopedFileDescriptor>(handle.fds.size());
33 const size_t n = handle.fds.size();
34 for (size_t i = 0; i < n; ++i) {
35 dup.fds[i] = handle.fds[i].dup();
36 }
37 dup.ints = handle.ints;
38
39 return dup;
40 }
41
dupHardwareBuffer(const HardwareBuffer & buffer)42 HardwareBuffer dupHardwareBuffer(const HardwareBuffer& buffer) {
43 HardwareBuffer dup = {
44 .description = buffer.description,
45 .handle = dupNativeHandle(buffer.handle),
46 };
47
48 return dup;
49 }
50
51 } // namespace
52
dupBufferDesc(const BufferDesc & src)53 BufferDesc dupBufferDesc(const BufferDesc& src) {
54 BufferDesc dup = {
55 .buffer = dupHardwareBuffer(src.buffer),
56 .pixelSizeBytes = src.pixelSizeBytes,
57 .bufferId = src.bufferId,
58 .deviceId = src.deviceId,
59 .timestamp = src.timestamp,
60 .metadata = src.metadata,
61 };
62
63 return dup;
64 }
65
getNativeHandle(const BufferDesc & buffer)66 native_handle_t* getNativeHandle(const BufferDesc& buffer) {
67 native_handle_t* nativeHandle = android::makeFromAidl(buffer.buffer.handle);
68 if (nativeHandle == nullptr ||
69 !std::all_of(nativeHandle->data + 0, nativeHandle->data + nativeHandle->numFds,
70 [](int fd) { return fd >= 0; })) {
71 LOG(ERROR) << "Buffer " << buffer.bufferId << " contains an invalid native handle.";
72 free(nativeHandle);
73 return nullptr;
74 }
75
76 return nativeHandle;
77 }
78