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 #include <atomic>
18
19 #define LOG_TAG "EffectBufferHalHidl"
20 //#define LOG_NDEBUG 0
21
22 #include <android/hidl/allocator/1.0/IAllocator.h>
23 #include <hidlmemory/mapping.h>
24 #include <utils/Log.h>
25
26 #include "ConversionHelperHidl.h"
27 #include "EffectBufferHalHidl.h"
28
29 using ::android::hardware::Return;
30 using ::android::hidl::allocator::V1_0::IAllocator;
31
32 namespace android {
33 namespace effect {
34 namespace CPP_VERSION {
35
36 // static
makeUniqueId()37 uint64_t EffectBufferHalHidl::makeUniqueId() {
38 static std::atomic<uint64_t> counter{1};
39 return counter++;
40 }
41
allocate(size_t size,sp<EffectBufferHalInterface> * buffer)42 status_t EffectBufferHalHidl::allocate(
43 size_t size, sp<EffectBufferHalInterface>* buffer) {
44 return mirror(nullptr, size, buffer);
45 }
46
mirror(void * external,size_t size,sp<EffectBufferHalInterface> * buffer)47 status_t EffectBufferHalHidl::mirror(
48 void* external, size_t size, sp<EffectBufferHalInterface>* buffer) {
49 sp<EffectBufferHalInterface> tempBuffer = new EffectBufferHalHidl(size);
50 status_t result = static_cast<EffectBufferHalHidl*>(tempBuffer.get())->init();
51 if (result == OK) {
52 tempBuffer->setExternalData(external);
53 *buffer = tempBuffer;
54 }
55 return result;
56 }
57
EffectBufferHalHidl(size_t size)58 EffectBufferHalHidl::EffectBufferHalHidl(size_t size)
59 : mBufferSize(size), mFrameCountChanged(false),
60 mExternalData(nullptr), mAudioBuffer{0, {nullptr}} {
61 mHidlBuffer.id = makeUniqueId();
62 mHidlBuffer.frameCount = 0;
63 }
64
~EffectBufferHalHidl()65 EffectBufferHalHidl::~EffectBufferHalHidl() {
66 }
67
init()68 status_t EffectBufferHalHidl::init() {
69 sp<IAllocator> ashmem = IAllocator::getService("ashmem");
70 if (ashmem == 0) {
71 ALOGE("Failed to retrieve ashmem allocator service");
72 return NO_INIT;
73 }
74 status_t retval = NO_MEMORY;
75 Return<void> result = ashmem->allocate(
76 mBufferSize,
77 [&](bool success, const hidl_memory& memory) {
78 if (success) {
79 mHidlBuffer.data = memory;
80 retval = OK;
81 }
82 });
83 if (result.isOk() && retval == OK) {
84 mMemory = hardware::mapMemory(mHidlBuffer.data);
85 if (mMemory != 0) {
86 mMemory->update();
87 mAudioBuffer.raw = static_cast<void*>(mMemory->getPointer());
88 memset(mAudioBuffer.raw, 0, mMemory->getSize());
89 mMemory->commit();
90 } else {
91 ALOGE("Failed to map allocated ashmem");
92 retval = NO_MEMORY;
93 }
94 } else {
95 ALOGE("Failed to allocate %d bytes from ashmem", (int)mBufferSize);
96 }
97 return result.isOk() ? retval : FAILED_TRANSACTION;
98 }
99
audioBuffer()100 audio_buffer_t* EffectBufferHalHidl::audioBuffer() {
101 return &mAudioBuffer;
102 }
103
externalData() const104 void* EffectBufferHalHidl::externalData() const {
105 return mExternalData;
106 }
107
setFrameCount(size_t frameCount)108 void EffectBufferHalHidl::setFrameCount(size_t frameCount) {
109 mHidlBuffer.frameCount = frameCount;
110 mAudioBuffer.frameCount = frameCount;
111 mFrameCountChanged = true;
112 }
113
checkFrameCountChange()114 bool EffectBufferHalHidl::checkFrameCountChange() {
115 bool result = mFrameCountChanged;
116 mFrameCountChanged = false;
117 return result;
118 }
119
setExternalData(void * external)120 void EffectBufferHalHidl::setExternalData(void* external) {
121 mExternalData = external;
122 }
123
update()124 void EffectBufferHalHidl::update() {
125 update(mBufferSize);
126 }
127
commit()128 void EffectBufferHalHidl::commit() {
129 commit(mBufferSize);
130 }
131
update(size_t size)132 void EffectBufferHalHidl::update(size_t size) {
133 if (mExternalData == nullptr) return;
134 mMemory->update();
135 if (size > mBufferSize) size = mBufferSize;
136 memcpy(mAudioBuffer.raw, mExternalData, size);
137 mMemory->commit();
138 }
139
commit(size_t size)140 void EffectBufferHalHidl::commit(size_t size) {
141 if (mExternalData == nullptr) return;
142 if (size > mBufferSize) size = mBufferSize;
143 memcpy(mExternalData, mAudioBuffer.raw, size);
144 }
145
146 } // namespace effect
147 } // namespace CPP_VERSION
148 } // namespace android
149