35 lines
857 B
C
35 lines
857 B
C
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#ifndef LIPSYNC_SAMPLERATECONVERTER_H
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#define LIPSYNC_SAMPLERATECONVERTER_H
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#include <memory>
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#include <vector>
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#include "AudioStream.h"
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class SampleRateConverter : public AudioStream {
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public:
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SampleRateConverter(std::unique_ptr<AudioStream> inputStream, int outputFrameRate);
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virtual int getFrameRate() override;
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virtual int getFrameCount() override;
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virtual int getChannelCount() override;
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virtual bool getNextSample(float &sample) override;
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private:
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// The stream we're reading from
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std::unique_ptr<AudioStream> inputStream;
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// input frame rate / output frame rate
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double downscalingFactor;
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int outputFrameRate;
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int outputFrameCount;
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float lastInputSample;
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int lastInputSampleIndex;
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int nextOutputSampleIndex;
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float mean(double start, double end);
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float getInputSample(int sampleIndex);
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};
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#endif //LIPSYNC_SAMPLERATECONVERTER_H
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