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(int32_t sharedMemoryIndex,int32_t offsetInBytes,int32_t sizeInBytes)49 void SharedRegionParcelable::setup(int32_t sharedMemoryIndex,
50 int32_t offsetInBytes,
51 int32_t sizeInBytes) {
52 mSharedMemoryIndex = sharedMemoryIndex;
53 mOffsetInBytes = offsetInBytes;
54 mSizeInBytes = sizeInBytes;
55 }
56
resolve(SharedMemoryParcelable * memoryParcels,void ** regionAddressPtr)57 aaudio_result_t SharedRegionParcelable::resolve(SharedMemoryParcelable *memoryParcels,
58 void **regionAddressPtr) {
59 if (mSizeInBytes == 0) {
60 *regionAddressPtr = nullptr;
61 return AAUDIO_OK;
62 }
63 if (mSharedMemoryIndex < 0) {
64 ALOGE("invalid mSharedMemoryIndex = %d", mSharedMemoryIndex);
65 return AAUDIO_ERROR_INTERNAL;
66 }
67 SharedMemoryParcelable *memoryParcel = &memoryParcels[mSharedMemoryIndex];
68 return memoryParcel->resolve(mOffsetInBytes, mSizeInBytes, regionAddressPtr);
69 }
70
validate() const71 aaudio_result_t SharedRegionParcelable::validate() const {
72 if (mSizeInBytes < 0 || mSizeInBytes >= MAX_MMAP_SIZE_BYTES) {
73 ALOGE("invalid mSizeInBytes = %d", mSizeInBytes);
74 return AAUDIO_ERROR_OUT_OF_RANGE;
75 }
76 if (mSizeInBytes > 0) {
77 if (mOffsetInBytes < 0 || mOffsetInBytes >= MAX_MMAP_OFFSET_BYTES) {
78 ALOGE("invalid mOffsetInBytes = %d", mOffsetInBytes);
79 return AAUDIO_ERROR_OUT_OF_RANGE;
80 }
81 if (mSharedMemoryIndex < 0 || mSharedMemoryIndex >= MAX_SHARED_MEMORIES) {
82 ALOGE("invalid mSharedMemoryIndex = %d", mSharedMemoryIndex);
83 return AAUDIO_ERROR_INTERNAL;
84 }
85 }
86 return AAUDIO_OK;
87 }
88
dump()89 void SharedRegionParcelable::dump() {
90 ALOGD("mSizeInBytes = %d -----", mSizeInBytes);
91 if (mSizeInBytes > 0) {
92 ALOGD("mSharedMemoryIndex = %d", mSharedMemoryIndex);
93 ALOGD("mOffsetInBytes = %d", mOffsetInBytes);
94 }
95 }
96