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Kevin Rocardd4de2882018-02-28 14:33:38 -08001/*
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
29using ::android::hardware::Return;
30using ::android::hidl::allocator::V1_0::IAllocator;
31
32namespace android {
Kevin Rocard070e7512018-05-22 09:29:13 -070033namespace CPP_VERSION {
Kevin Rocardd4de2882018-02-28 14:33:38 -080034
35// static
36uint64_t EffectBufferHalHidl::makeUniqueId() {
37 static std::atomic<uint64_t> counter{1};
38 return counter++;
39}
40
41status_t EffectBufferHalHidl::allocate(
42 size_t size, sp<EffectBufferHalInterface>* buffer) {
43 return mirror(nullptr, size, buffer);
44}
45
46status_t EffectBufferHalHidl::mirror(
47 void* external, size_t size, sp<EffectBufferHalInterface>* buffer) {
48 sp<EffectBufferHalInterface> tempBuffer = new EffectBufferHalHidl(size);
49 status_t result = static_cast<EffectBufferHalHidl*>(tempBuffer.get())->init();
50 if (result == OK) {
51 tempBuffer->setExternalData(external);
52 *buffer = tempBuffer;
53 }
54 return result;
55}
56
57EffectBufferHalHidl::EffectBufferHalHidl(size_t size)
58 : mBufferSize(size), mFrameCountChanged(false),
59 mExternalData(nullptr), mAudioBuffer{0, {nullptr}} {
60 mHidlBuffer.id = makeUniqueId();
61 mHidlBuffer.frameCount = 0;
62}
63
64EffectBufferHalHidl::~EffectBufferHalHidl() {
65}
66
67status_t EffectBufferHalHidl::init() {
68 sp<IAllocator> ashmem = IAllocator::getService("ashmem");
69 if (ashmem == 0) {
70 ALOGE("Failed to retrieve ashmem allocator service");
71 return NO_INIT;
72 }
73 status_t retval = NO_MEMORY;
74 Return<void> result = ashmem->allocate(
75 mBufferSize,
76 [&](bool success, const hidl_memory& memory) {
77 if (success) {
78 mHidlBuffer.data = memory;
79 retval = OK;
80 }
81 });
82 if (result.isOk() && retval == OK) {
83 mMemory = hardware::mapMemory(mHidlBuffer.data);
84 if (mMemory != 0) {
85 mMemory->update();
86 mAudioBuffer.raw = static_cast<void*>(mMemory->getPointer());
87 memset(mAudioBuffer.raw, 0, mMemory->getSize());
88 mMemory->commit();
89 } else {
90 ALOGE("Failed to map allocated ashmem");
91 retval = NO_MEMORY;
92 }
93 } else {
94 ALOGE("Failed to allocate %d bytes from ashmem", (int)mBufferSize);
95 }
96 return result.isOk() ? retval : FAILED_TRANSACTION;
97}
98
99audio_buffer_t* EffectBufferHalHidl::audioBuffer() {
100 return &mAudioBuffer;
101}
102
103void* EffectBufferHalHidl::externalData() const {
104 return mExternalData;
105}
106
107void EffectBufferHalHidl::setFrameCount(size_t frameCount) {
108 mHidlBuffer.frameCount = frameCount;
109 mAudioBuffer.frameCount = frameCount;
110 mFrameCountChanged = true;
111}
112
113bool EffectBufferHalHidl::checkFrameCountChange() {
114 bool result = mFrameCountChanged;
115 mFrameCountChanged = false;
116 return result;
117}
118
119void EffectBufferHalHidl::setExternalData(void* external) {
120 mExternalData = external;
121}
122
123void EffectBufferHalHidl::update() {
124 update(mBufferSize);
125}
126
127void EffectBufferHalHidl::commit() {
128 commit(mBufferSize);
129}
130
131void EffectBufferHalHidl::update(size_t size) {
132 if (mExternalData == nullptr) return;
133 mMemory->update();
134 if (size > mBufferSize) size = mBufferSize;
135 memcpy(mAudioBuffer.raw, mExternalData, size);
136 mMemory->commit();
137}
138
139void EffectBufferHalHidl::commit(size_t size) {
140 if (mExternalData == nullptr) return;
141 if (size > mBufferSize) size = mBufferSize;
142 memcpy(mExternalData, mAudioBuffer.raw, size);
143}
144
Kevin Rocard070e7512018-05-22 09:29:13 -0700145} // namespace CPP_VERSION
Kevin Rocardd4de2882018-02-28 14:33:38 -0800146} // namespace android