You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
56 lines
1.6 KiB
56 lines
1.6 KiB
/*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef AAUDIO_AAUDIO_MIXER_H
|
|
#define AAUDIO_AAUDIO_MIXER_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <aaudio/AAudio.h>
|
|
#include <fifo/FifoBuffer.h>
|
|
|
|
class AAudioMixer {
|
|
public:
|
|
AAudioMixer() {}
|
|
|
|
void allocate(int32_t samplesPerFrame, int32_t framesPerBurst);
|
|
|
|
void clear();
|
|
|
|
/**
|
|
* Mix from this FIFO
|
|
* @param streamIndex for marking stream variables in systrace
|
|
* @param fifo to read from
|
|
* @param allowUnderflow if true then allow mixer to advance read index past the write index
|
|
* @return frames read from this stream
|
|
*/
|
|
int32_t mix(int streamIndex, std::shared_ptr<android::FifoBuffer> fifo, bool allowUnderflow);
|
|
|
|
float *getOutputBuffer();
|
|
|
|
int32_t getFramesPerBurst() const { return mFramesPerBurst; }
|
|
|
|
private:
|
|
void mixPart(float *destination, float *source, int32_t numFrames);
|
|
|
|
std::unique_ptr<float[]> mOutputBuffer;
|
|
int32_t mSamplesPerFrame = 0;
|
|
int32_t mFramesPerBurst = 0;
|
|
int32_t mBufferSizeInBytes = 0;
|
|
};
|
|
|
|
#endif //AAUDIO_AAUDIO_MIXER_H
|