87 lines
3 KiB
C++
Vendored
87 lines
3 KiB
C++
Vendored
/*
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* Copyright (C) 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_OBOE_FLOW_GRAPH_H
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#define OBOE_OBOE_FLOW_GRAPH_H
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#include <memory>
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#include <stdint.h>
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#include <sys/types.h>
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#include "oboe_flowgraph_ChannelCountConverter_android.h"
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#include "oboe_flowgraph_MonoToMultiConverter_android.h"
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#include "oboe_flowgraph_MultiToMonoConverter_android.h"
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#include "oboe_flowgraph_SampleRateConverter_android.h"
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#include "oboe_oboe_Definitions_android.h"
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#include "oboe_common_AudioSourceCaller_android.h"
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#include "oboe_common_FixedBlockWriter_android.h"
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namespace oboe {
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class AudioStream;
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class AudioSourceCaller;
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/**
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* Convert PCM channels, format and sample rate for optimal latency.
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*/
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class DataConversionFlowGraph : public FixedBlockProcessor {
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public:
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DataConversionFlowGraph()
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: mBlockWriter(*this) {}
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void setSource(const void *buffer, int32_t numFrames);
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/** Connect several modules together to convert from source to sink.
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* This should only be called once for each instance.
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*
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* @param sourceFormat
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* @param sourceChannelCount
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* @param sinkFormat
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* @param sinkChannelCount
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* @return
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*/
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oboe::Result configure(oboe::AudioStream *sourceStream, oboe::AudioStream *sinkStream);
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int32_t read(void *buffer, int32_t numFrames, int64_t timeoutNanos);
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int32_t write(void *buffer, int32_t numFrames);
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int32_t onProcessFixedBlock(uint8_t *buffer, int32_t numBytes) override;
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DataCallbackResult getDataCallbackResult() {
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return mCallbackResult;
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}
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private:
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std::unique_ptr<flowgraph::FlowGraphSourceBuffered> mSource;
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std::unique_ptr<AudioSourceCaller> mSourceCaller;
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std::unique_ptr<flowgraph::MonoToMultiConverter> mMonoToMultiConverter;
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std::unique_ptr<flowgraph::MultiToMonoConverter> mMultiToMonoConverter;
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std::unique_ptr<flowgraph::ChannelCountConverter> mChannelCountConverter;
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std::unique_ptr<resampler::MultiChannelResampler> mResampler;
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std::unique_ptr<flowgraph::SampleRateConverter> mRateConverter;
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std::unique_ptr<flowgraph::FlowGraphSink> mSink;
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FixedBlockWriter mBlockWriter;
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DataCallbackResult mCallbackResult = DataCallbackResult::Continue;
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AudioStream *mFilterStream = nullptr;
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std::unique_ptr<uint8_t[]> mAppBuffer;
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};
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}
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#endif //OBOE_OBOE_FLOW_GRAPH_H
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