/**
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* @file rem_auresamp.h Audio Resampling
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*
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* Copyright (C) 2010 Creytiv.com
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*/
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/**
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* Defines the audio resampler handler
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*
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* @param outv Output samples
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* @param inv Input samples
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* @param inc Number of input samples
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* @param ratio Resample ratio
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*/
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typedef void (auresamp_h)(int16_t *outv, const int16_t *inv,
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size_t inc, unsigned ratio);
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/** Defines the resampler state */
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struct auresamp {
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struct fir fir; /**< FIR filter state */
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auresamp_h *resample; /**< Resample handler */
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const int16_t *tapv; /**< FIR filter taps */
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size_t tapc; /**< FIR filter tap count */
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uint32_t orate, irate; /**< Input/output sample rate */
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unsigned och, ich; /**< Input/output channel count */
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unsigned ratio; /**< Resample ratio */
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bool up; /**< Up/down sample flag */
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};
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void auresamp_init(struct auresamp *rs);
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int auresamp_setup(struct auresamp *rs, uint32_t irate, unsigned ich,
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uint32_t orate, unsigned och);
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int auresamp(struct auresamp *rs, int16_t *outv, size_t *outc,
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const int16_t *inv, size_t inc);
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