ebiten/audio/internal/oboe/oboe_flowgraph_MonoToMultiConverter_android.cpp

44 lines
1.4 KiB
C++
Vendored

/*
* Copyright 2015 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 <unistd.h>
#include "oboe_flowgraph_FlowGraphNode_android.h"
#include "oboe_flowgraph_MonoToMultiConverter_android.h"
using namespace FLOWGRAPH_OUTER_NAMESPACE::flowgraph;
MonoToMultiConverter::MonoToMultiConverter(int32_t outputChannelCount)
: input(*this, 1)
, output(*this, outputChannelCount) {
}
MonoToMultiConverter::~MonoToMultiConverter() { }
int32_t MonoToMultiConverter::onProcess(int32_t numFrames) {
const float *inputBuffer = input.getBuffer();
float *outputBuffer = output.getBuffer();
int32_t channelCount = output.getSamplesPerFrame();
for (int i = 0; i < numFrames; i++) {
// read one, write many
float sample = *inputBuffer++;
for (int channel = 0; channel < channelCount; channel++) {
*outputBuffer++ = sample;
}
}
return numFrames;
}