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