/usr/include/rem/rem_auresamp.h is in librem-dev 0.4.7-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | /**
* @file rem_auresamp.h Audio Resampling
*
* Copyright (C) 2010 Creytiv.com
*/
/**
* Defines the audio resampler handler
*
* @param outv Output samples
* @param inv Input samples
* @param inc Number of input samples
* @param ratio Resample ratio
*/
typedef void (auresamp_h)(int16_t *outv, const int16_t *inv,
size_t inc, unsigned ratio);
/** Defines the resampler state */
struct auresamp {
struct fir fir; /**< FIR filter state */
auresamp_h *resample; /**< Resample handler */
const int16_t *tapv; /**< FIR filter taps */
size_t tapc; /**< FIR filter tap count */
uint32_t orate, irate; /**< Input/output sample rate */
unsigned och, ich; /**< Input/output channel count */
unsigned ratio; /**< Resample ratio */
bool up; /**< Up/down sample flag */
};
void auresamp_init(struct auresamp *rs);
int auresamp_setup(struct auresamp *rs, uint32_t irate, unsigned ich,
uint32_t orate, unsigned och);
int auresamp(struct auresamp *rs, int16_t *outv, size_t *outc,
const int16_t *inv, size_t inc);
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