131 lines
3.4 KiB
C++
131 lines
3.4 KiB
C++
/*
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* Copyright (C) 2022 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 <algorithm>
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#include <cstdint>
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#include <cstring>
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#include <sys/mman.h>
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#define LOG_TAG "EffectBufferHalAidl"
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//#define LOG_NDEBUG 0
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#include <cutils/ashmem.h>
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#include <utils/Log.h>
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#include "EffectBufferHalAidl.h"
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using ndk::ScopedFileDescriptor;
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namespace android {
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namespace effect {
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// static
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status_t EffectBufferHalAidl::allocate(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 EffectBufferHalAidl::mirror(void* external, size_t size,
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sp<EffectBufferHalInterface>* buffer) {
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sp<EffectBufferHalAidl> tempBuffer = new EffectBufferHalAidl(size);
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status_t status = tempBuffer.get()->init();
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if (status != OK) {
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ALOGE("%s init failed %d", __func__, status);
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return status;
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}
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tempBuffer->setExternalData(external);
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*buffer = tempBuffer;
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return OK;
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}
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EffectBufferHalAidl::EffectBufferHalAidl(size_t size)
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: mBufferSize(size),
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mFrameCountChanged(false),
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mExternalData(nullptr),
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mAudioBuffer{0, {nullptr}} {
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}
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EffectBufferHalAidl::~EffectBufferHalAidl() {
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}
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status_t EffectBufferHalAidl::init() {
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int fd = ashmem_create_region("audioEffectAidl", mBufferSize);
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if (fd < 0) {
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ALOGE("%s create ashmem failed %d", __func__, fd);
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return fd;
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}
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ScopedFileDescriptor tempFd(fd);
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mAudioBuffer.raw = mmap(nullptr /* address */, mBufferSize /* length */, PROT_READ | PROT_WRITE,
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MAP_SHARED, fd, 0 /* offset */);
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if (mAudioBuffer.raw == MAP_FAILED) {
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ALOGE("mmap failed for fd %d", fd);
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mAudioBuffer.raw = nullptr;
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return INVALID_OPERATION;
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}
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mMemory = {std::move(tempFd), static_cast<int64_t>(mBufferSize)};
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return OK;
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}
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audio_buffer_t* EffectBufferHalAidl::audioBuffer() {
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return &mAudioBuffer;
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}
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void* EffectBufferHalAidl::externalData() const {
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return mExternalData;
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}
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void EffectBufferHalAidl::setFrameCount(size_t frameCount) {
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mAudioBuffer.frameCount = frameCount;
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mFrameCountChanged = true;
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}
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bool EffectBufferHalAidl::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 EffectBufferHalAidl::setExternalData(void* external) {
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mExternalData = external;
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}
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void EffectBufferHalAidl::update() {
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update(mBufferSize);
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}
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void EffectBufferHalAidl::commit() {
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commit(mBufferSize);
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}
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void EffectBufferHalAidl::copy(void* dst, const void* src, size_t n) const {
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if (!dst || !src) {
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return;
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}
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std::memcpy(dst, src, std::min(n, mBufferSize));
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}
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void EffectBufferHalAidl::update(size_t n) {
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copy(mAudioBuffer.raw, mExternalData, n);
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}
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void EffectBufferHalAidl::commit(size_t n) {
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copy(mExternalData, mAudioBuffer.raw, n);
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}
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} // namespace effect
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} // namespace android
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