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/*
* Copyright (C) 2022 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.
*/
#define ATRACE_TAG ATRACE_TAG_AUDIO
#define LOG_TAG "AHAL_DownmixImpl"
#include <android-base/logging.h>
#include <system/audio_effects/effect_uuid.h>
#include <utils/Trace.h>
#include "EffectDownmix.h"
using aidl::android::hardware::audio::effect::Descriptor;
using aidl::android::hardware::audio::effect::DownmixImpl;
using aidl::android::hardware::audio::effect::getEffectImplUuidDownmix;
using aidl::android::hardware::audio::effect::getEffectTypeUuidDownmix;
using aidl::android::hardware::audio::effect::IEffect;
using aidl::android::media::audio::common::AudioUuid;
extern "C" binder_exception_t createEffect(const AudioUuid* in_impl_uuid,
std::shared_ptr<IEffect>* instanceSpp) {
if (!in_impl_uuid || *in_impl_uuid != getEffectImplUuidDownmix()) {
LOG(ERROR) << __func__ << "uuid not supported";
return EX_ILLEGAL_ARGUMENT;
}
if (instanceSpp) {
*instanceSpp = ndk::SharedRefBase::make<DownmixImpl>();
return EX_NONE;
} else {
LOG(ERROR) << __func__ << " invalid input parameter!";
return EX_ILLEGAL_ARGUMENT;
}
}
extern "C" binder_exception_t queryEffect(const AudioUuid* in_impl_uuid, Descriptor* _aidl_return) {
if (!in_impl_uuid || *in_impl_uuid != getEffectImplUuidDownmix()) {
LOG(ERROR) << __func__ << "uuid not supported";
return EX_ILLEGAL_ARGUMENT;
}
*_aidl_return = DownmixImpl::kDescriptor;
return EX_NONE;
}
namespace aidl::android::hardware::audio::effect {
const std::string DownmixImpl::kEffectName = "Multichannel Downmix To Stereo";
const Descriptor DownmixImpl::kDescriptor = {
.common = {.id = {.type = getEffectTypeUuidDownmix(),
.uuid = getEffectImplUuidDownmix(),
.proxy = std::nullopt},
.flags = {.type = Flags::Type::INSERT, .insert = Flags::Insert::FIRST},
.name = DownmixImpl::kEffectName,
.implementor = "The Android Open Source Project"}};
ndk::ScopedAStatus DownmixImpl::getDescriptor(Descriptor* _aidl_return) {
RETURN_IF(!_aidl_return, EX_ILLEGAL_ARGUMENT, "Parameter:nullptr");
*_aidl_return = kDescriptor;
return ndk::ScopedAStatus::ok();
}
ndk::ScopedAStatus DownmixImpl::commandImpl(CommandId command) {
RETURN_IF(!mContext, EX_NULL_POINTER, "nullContext");
switch (command) {
case CommandId::START:
mContext->enable();
break;
case CommandId::STOP:
mContext->disable();
break;
case CommandId::RESET:
mContext->reset();
break;
default:
LOG(ERROR) << __func__ << " commandId " << toString(command) << " not supported";
return ndk::ScopedAStatus::fromExceptionCodeWithMessage(EX_ILLEGAL_ARGUMENT,
"commandIdNotSupported");
}
return ndk::ScopedAStatus::ok();
}
ndk::ScopedAStatus DownmixImpl::setParameterSpecific(const Parameter::Specific& specific) {
RETURN_IF(Parameter::Specific::downmix != specific.getTag(), EX_ILLEGAL_ARGUMENT,
"EffectNotSupported");
RETURN_IF(!mContext, EX_NULL_POINTER, "nullContext");
auto& dmParam = specific.get<Parameter::Specific::downmix>();
auto tag = dmParam.getTag();
switch (tag) {
case Downmix::type: {
RETURN_IF(mContext->setDmType(dmParam.get<Downmix::type>()) != RetCode::SUCCESS,
EX_ILLEGAL_ARGUMENT, "setTypeFailed");
return ndk::ScopedAStatus::ok();
}
default: {
LOG(ERROR) << __func__ << " unsupported tag: " << toString(tag);
return ndk::ScopedAStatus::fromExceptionCodeWithMessage(EX_ILLEGAL_ARGUMENT,
"DownmixTagNotSupported");
}
}
}
ndk::ScopedAStatus DownmixImpl::getParameterSpecific(const Parameter::Id& id,
Parameter::Specific* specific) {
RETURN_IF(!specific, EX_NULL_POINTER, "nullPtr");
auto tag = id.getTag();
RETURN_IF(Parameter::Id::downmixTag != tag, EX_ILLEGAL_ARGUMENT, "wrongIdTag");
auto dmId = id.get<Parameter::Id::downmixTag>();
auto dmIdTag = dmId.getTag();
switch (dmIdTag) {
case Downmix::Id::commonTag:
return getParameterDownmix(dmId.get<Downmix::Id::commonTag>(), specific);
default:
LOG(ERROR) << __func__ << " unsupported tag: " << toString(dmIdTag);
return ndk::ScopedAStatus::fromExceptionCodeWithMessage(EX_ILLEGAL_ARGUMENT,
"DownmixTagNotSupported");
}
}
ndk::ScopedAStatus DownmixImpl::getParameterDownmix(const Downmix::Tag& tag,
Parameter::Specific* specific) {
RETURN_IF(!mContext, EX_NULL_POINTER, "nullContext");
Downmix dmParam;
switch (tag) {
case Downmix::type: {
dmParam.set<Downmix::type>(mContext->getDmType());
break;
}
default: {
LOG(ERROR) << __func__ << " unsupported tag: " << toString(tag);
return ndk::ScopedAStatus::fromExceptionCodeWithMessage(EX_ILLEGAL_ARGUMENT,
"DownmixTagNotSupported");
}
}
specific->set<Parameter::Specific::downmix>(dmParam);
return ndk::ScopedAStatus::ok();
}
std::shared_ptr<EffectContext> DownmixImpl::createContext(const Parameter::Common& common) {
if (mContext) {
LOG(DEBUG) << __func__ << " context already exist";
return mContext;
}
if (!DownmixContext::validateCommonConfig(common)) return nullptr;
mContext = std::make_shared<DownmixContext>(1 /* statusFmqDepth */, common);
return mContext;
}
RetCode DownmixImpl::releaseContext() {
if (mContext) {
mContext.reset();
}
return RetCode::SUCCESS;
}
void DownmixImpl::process() {
ATRACE_NAME("Downmix::process");
/**
* wait for the EventFlag without lock, it's ok because the mEfGroup pointer will not change
* in the life cycle of workerThread (threadLoop).
*/
uint32_t efState = 0;
if (!mEventFlag || ::android::OK != mEventFlag->wait(kEventFlagNotEmpty, &efState)) {
LOG(ERROR) << getEffectName() << __func__ << ": StatusEventFlag invalid";
}
{
std::lock_guard lg(mImplMutex);
RETURN_VALUE_IF(!mImplContext, void(), "nullContext");
auto statusMQ = mImplContext->getStatusFmq();
auto inputMQ = mImplContext->getInputDataFmq();
auto outputMQ = mImplContext->getOutputDataFmq();
auto buffer = mImplContext->getWorkBuffer();
if (!inputMQ || !outputMQ) {
return;
}
const auto availableToRead = inputMQ->availableToRead();
const auto availableToWrite = outputMQ->availableToWrite() *
mImplContext->getInputFrameSize() /
mImplContext->getOutputFrameSize();
assert(mImplContext->getWorkBufferSize() >=
std::max(availableToRead(), availableToWrite));
auto processSamples = std::min(availableToRead, availableToWrite);
if (processSamples) {
inputMQ->read(buffer, processSamples);
IEffect::Status status = effectProcessImpl(buffer, buffer, processSamples);
outputMQ->write(buffer, status.fmqProduced);
statusMQ->writeBlocking(&status, 1);
}
}
}
// Processing method running in EffectWorker thread.
IEffect::Status DownmixImpl::effectProcessImpl(float* in, float* out, int sampleToProcess) {
if (!mContext) {
LOG(ERROR) << __func__ << " nullContext";
return {EX_NULL_POINTER, 0, 0};
}
return mContext->downmixProcess(in, out, sampleToProcess);
}
} // namespace aidl::android::hardware::audio::effect
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