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52 lines
1.4 KiB
C++
Vendored
52 lines
1.4 KiB
C++
Vendored
/*
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* Copyright 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef OBOE_POLYPHASE_RESAMPLER_H
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#define OBOE_POLYPHASE_RESAMPLER_H
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#include <memory>
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#include <vector>
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#include <sys/types.h>
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#include <unistd.h>
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#include "oboe_flowgraph_resampler_MultiChannelResampler_android.h"
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namespace resampler {
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/**
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* Resampler that is optimized for a reduced ratio of sample rates.
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* All of the coefficients for each possible phase value are pre-calculated.
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*/
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class PolyphaseResampler : public MultiChannelResampler {
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public:
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/**
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*
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* @param builder containing lots of parameters
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*/
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explicit PolyphaseResampler(const MultiChannelResampler::Builder &builder);
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virtual ~PolyphaseResampler() = default;
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void readFrame(float *frame) override;
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protected:
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int32_t mCoefficientCursor = 0;
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};
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}
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#endif //OBOE_POLYPHASE_RESAMPLER_H
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