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/*
* Copyright 2025 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 "SinkMemoryDirect.h"
#include "common/OboeDebug.h"
SinkMemoryDirect::SinkMemoryDirect(int channelCount, int bytesPerFrame) :
oboe::flowgraph::FlowGraphSink(channelCount), mBytesPerFrame(bytesPerFrame) {
}
void SinkMemoryDirect::setupMemoryBuffer(std::unique_ptr<uint8_t[]>& buffer, int length) {
mBuffer = std::make_unique<uint8_t[]>(length);
memcpy(mBuffer.get(), buffer.get(), length);
mBufferLength = length;
mCurPosition = 0;
}
void SinkMemoryDirect::reset() {
oboe::flowgraph::FlowGraphNode::reset();
mCurPosition = 0;
}
int32_t SinkMemoryDirect::read(void *data, int32_t numFrames) {
auto uint8Data = static_cast<uint8_t*>(data);
int bytesLeft = numFrames * mBytesPerFrame;
while (bytesLeft > 0) {
int bytesToCopy = std::min(bytesLeft, mBufferLength - mCurPosition);
memcpy(uint8Data, mBuffer.get() + mCurPosition, bytesToCopy);
mCurPosition += bytesToCopy;
if (mCurPosition >= mBufferLength) {
mCurPosition = 0;
}
bytesLeft -= bytesToCopy;
uint8Data += bytesToCopy;
}
return numFrames;
}
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