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 29using ::android::hardware::Return; 30using ::android::hidl::allocator::V1_0::IAllocator; 31 32namespace android { 33 34// static 35uint64_t EffectBufferHalHidl::makeUniqueId() { 36 static std::atomic<uint64_t> counter{1}; 37 return counter++; 38} 39 40// static 41status_t EffectBufferHalInterface::allocate( 42 size_t size, sp<EffectBufferHalInterface>* buffer) { 43 return mirror(nullptr, size, buffer); 44} 45 46// static 47status_t EffectBufferHalInterface::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 58EffectBufferHalHidl::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 65EffectBufferHalHidl::~EffectBufferHalHidl() { 66} 67 68status_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 100audio_buffer_t* EffectBufferHalHidl::audioBuffer() { 101 return &mAudioBuffer; 102} 103 104void* EffectBufferHalHidl::externalData() const { 105 return mExternalData; 106} 107 108void EffectBufferHalHidl::setFrameCount(size_t frameCount) { 109 mHidlBuffer.frameCount = frameCount; 110 mAudioBuffer.frameCount = frameCount; 111 mFrameCountChanged = true; 112} 113 114bool EffectBufferHalHidl::checkFrameCountChange() { 115 bool result = mFrameCountChanged; 116 mFrameCountChanged = false; 117 return result; 118} 119 120void EffectBufferHalHidl::setExternalData(void* external) { 121 mExternalData = external; 122} 123 124void EffectBufferHalHidl::update() { 125 update(mBufferSize); 126} 127 128void EffectBufferHalHidl::commit() { 129 commit(mBufferSize); 130} 131 132void 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 140void 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 android 147