| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <atomic> |
| |
| #define LOG_TAG "EffectBufferHalHidl" |
| //#define LOG_NDEBUG 0 |
| |
| #include <android/hidl/allocator/1.0/IAllocator.h> |
| #include <hidlmemory/mapping.h> |
| #include <utils/Log.h> |
| |
| #include "ConversionHelperHidl.h" |
| #include "EffectBufferHalHidl.h" |
| |
| using ::android::hardware::Return; |
| using ::android::hidl::allocator::V1_0::IAllocator; |
| |
| namespace android { |
| |
| // static |
| uint64_t EffectBufferHalHidl::makeUniqueId() { |
| static std::atomic<uint64_t> counter{1}; |
| return counter++; |
| } |
| |
| // static |
| status_t EffectBufferHalInterface::allocate( |
| size_t size, sp<EffectBufferHalInterface>* buffer) { |
| return mirror(nullptr, size, buffer); |
| } |
| |
| // static |
| status_t EffectBufferHalInterface::mirror( |
| void* external, size_t size, sp<EffectBufferHalInterface>* buffer) { |
| sp<EffectBufferHalInterface> tempBuffer = new EffectBufferHalHidl(size); |
| status_t result = static_cast<EffectBufferHalHidl*>(tempBuffer.get())->init(); |
| if (result == OK) { |
| tempBuffer->setExternalData(external); |
| *buffer = tempBuffer; |
| } |
| return result; |
| } |
| |
| EffectBufferHalHidl::EffectBufferHalHidl(size_t size) |
| : mBufferSize(size), mFrameCountChanged(false), |
| mExternalData(nullptr), mAudioBuffer{0, {nullptr}} { |
| mHidlBuffer.id = makeUniqueId(); |
| mHidlBuffer.frameCount = 0; |
| } |
| |
| EffectBufferHalHidl::~EffectBufferHalHidl() { |
| } |
| |
| status_t EffectBufferHalHidl::init() { |
| sp<IAllocator> ashmem = IAllocator::getService("ashmem"); |
| if (ashmem == 0) { |
| ALOGE("Failed to retrieve ashmem allocator service"); |
| return NO_INIT; |
| } |
| status_t retval = NO_MEMORY; |
| Return<void> result = ashmem->allocate( |
| mBufferSize, |
| [&](bool success, const hidl_memory& memory) { |
| if (success) { |
| mHidlBuffer.data = memory; |
| retval = OK; |
| } |
| }); |
| if (result.isOk() && retval == OK) { |
| mMemory = hardware::mapMemory(mHidlBuffer.data); |
| if (mMemory != 0) { |
| mMemory->update(); |
| mAudioBuffer.raw = static_cast<void*>(mMemory->getPointer()); |
| memset(mAudioBuffer.raw, 0, mMemory->getSize()); |
| mMemory->commit(); |
| } else { |
| ALOGE("Failed to map allocated ashmem"); |
| retval = NO_MEMORY; |
| } |
| } else { |
| ALOGE("Failed to allocate %d bytes from ashmem", (int)mBufferSize); |
| } |
| return result.isOk() ? retval : FAILED_TRANSACTION; |
| } |
| |
| audio_buffer_t* EffectBufferHalHidl::audioBuffer() { |
| return &mAudioBuffer; |
| } |
| |
| void* EffectBufferHalHidl::externalData() const { |
| return mExternalData; |
| } |
| |
| void EffectBufferHalHidl::setFrameCount(size_t frameCount) { |
| mHidlBuffer.frameCount = frameCount; |
| mAudioBuffer.frameCount = frameCount; |
| mFrameCountChanged = true; |
| } |
| |
| bool EffectBufferHalHidl::checkFrameCountChange() { |
| bool result = mFrameCountChanged; |
| mFrameCountChanged = false; |
| return result; |
| } |
| |
| void EffectBufferHalHidl::setExternalData(void* external) { |
| mExternalData = external; |
| } |
| |
| void EffectBufferHalHidl::update() { |
| update(mBufferSize); |
| } |
| |
| void EffectBufferHalHidl::commit() { |
| commit(mBufferSize); |
| } |
| |
| void EffectBufferHalHidl::update(size_t size) { |
| if (mExternalData == nullptr) return; |
| mMemory->update(); |
| if (size > mBufferSize) size = mBufferSize; |
| memcpy(mAudioBuffer.raw, mExternalData, size); |
| mMemory->commit(); |
| } |
| |
| void EffectBufferHalHidl::commit(size_t size) { |
| if (mExternalData == nullptr) return; |
| if (size > mBufferSize) size = mBufferSize; |
| memcpy(mExternalData, mAudioBuffer.raw, size); |
| } |
| |
| } // namespace android |