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/*
* 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 {
namespace effect {
namespace CPP_VERSION {
// static
uint64_t EffectBufferHalHidl::makeUniqueId() {
static std::atomic<uint64_t> counter{1};
return counter++;
}
status_t EffectBufferHalHidl::allocate(
size_t size, sp<EffectBufferHalInterface>* buffer) {
return mirror(nullptr, size, buffer);
}
status_t EffectBufferHalHidl::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 effect
} // namespace CPP_VERSION
} // namespace android
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