1 /*
2 * Copyright 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 #define LOG_TAG "SharedRegionParcelable"
18 //#define LOG_NDEBUG 0
19 #include <utils/Log.h>
20
21 #include <stdint.h>
22
23 #include <sys/mman.h>
24 #include <binder/Parcelable.h>
25
26 #include <aaudio/AAudio.h>
27 #include <utility/AAudioUtilities.h>
28
29 #include "binding/SharedMemoryParcelable.h"
30 #include "binding/SharedRegionParcelable.h"
31
32 using android::status_t;
33
34 using namespace aaudio;
35
SharedRegionParcelable(const SharedRegion & parcelable)36 SharedRegionParcelable::SharedRegionParcelable(const SharedRegion& parcelable)
37 : mSharedMemoryIndex(parcelable.sharedMemoryIndex),
38 mOffsetInBytes(parcelable.offsetInBytes),
39 mSizeInBytes(parcelable.sizeInBytes) {}
40
parcelable() const41 SharedRegion SharedRegionParcelable::parcelable() const {
42 SharedRegion result;
43 result.sharedMemoryIndex = mSharedMemoryIndex;
44 result.offsetInBytes = mOffsetInBytes;
45 result.sizeInBytes = mSizeInBytes;
46 return result;
47 }
48
setup(MemoryInfoTuple memoryInfoTuple)49 void SharedRegionParcelable::setup(MemoryInfoTuple memoryInfoTuple) {
50 mSharedMemoryIndex = std::get<MEMORY_INDEX>(memoryInfoTuple);
51 mOffsetInBytes = std::get<OFFSET>(memoryInfoTuple);
52 mSizeInBytes = std::get<SIZE>(memoryInfoTuple);
53 }
54
getMemoryInfo(const std::map<int32_t,int32_t> * memoryIndexMap) const55 SharedRegionParcelable::MemoryInfoTuple SharedRegionParcelable::getMemoryInfo(
56 const std::map<int32_t, int32_t>* memoryIndexMap) const {
57 return {memoryIndexMap == nullptr ? mSharedMemoryIndex : memoryIndexMap->at(mSharedMemoryIndex),
58 mOffsetInBytes,
59 mSizeInBytes};
60 }
61
resolve(SharedMemoryParcelable * memoryParcels,void ** regionAddressPtr)62 aaudio_result_t SharedRegionParcelable::resolve(SharedMemoryParcelable *memoryParcels,
63 void **regionAddressPtr) {
64 if (mSizeInBytes == 0) {
65 *regionAddressPtr = nullptr;
66 return AAUDIO_OK;
67 }
68 if (mSharedMemoryIndex < 0) {
69 ALOGE("invalid mSharedMemoryIndex = %d", mSharedMemoryIndex);
70 return AAUDIO_ERROR_INTERNAL;
71 }
72 SharedMemoryParcelable *memoryParcel = &memoryParcels[mSharedMemoryIndex];
73 return memoryParcel->resolve(mOffsetInBytes, mSizeInBytes, regionAddressPtr);
74 }
75
validate() const76 aaudio_result_t SharedRegionParcelable::validate() const {
77 if (mSizeInBytes < 0 || mSizeInBytes >= MAX_MMAP_SIZE_BYTES) {
78 ALOGE("invalid mSizeInBytes = %d", mSizeInBytes);
79 return AAUDIO_ERROR_OUT_OF_RANGE;
80 }
81 if (mSizeInBytes > 0) {
82 if (mOffsetInBytes < 0 || mOffsetInBytes >= MAX_MMAP_OFFSET_BYTES) {
83 ALOGE("invalid mOffsetInBytes = %d", mOffsetInBytes);
84 return AAUDIO_ERROR_OUT_OF_RANGE;
85 }
86 if (mSharedMemoryIndex < 0 || mSharedMemoryIndex >= MAX_SHARED_MEMORIES) {
87 ALOGE("invalid mSharedMemoryIndex = %d", mSharedMemoryIndex);
88 return AAUDIO_ERROR_INTERNAL;
89 }
90 }
91 return AAUDIO_OK;
92 }
93
dump()94 void SharedRegionParcelable::dump() {
95 ALOGD("mSizeInBytes = %d -----", mSizeInBytes);
96 if (mSizeInBytes > 0) {
97 ALOGD("mSharedMemoryIndex = %d", mSharedMemoryIndex);
98 ALOGD("mOffsetInBytes = %d", mOffsetInBytes);
99 }
100 }
101