ref: c81b510239e84617a64222eb5faaf070009f3109
dir: /silk/resampler_private.h/
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#ifndef SILK_RESAMPLER_H
#define SILK_RESAMPLER_H
#ifdef __cplusplus
extern "C" {
#endif
#include "SigProc_FIX.h"
#include "resampler_structs.h"
#include "resampler_rom.h"
/* Number of input samples to process in the inner loop */
#define RESAMPLER_MAX_BATCH_SIZE_IN 480
/* Description: Hybrid IIR/FIR polyphase implementation of resampling */
void silk_resampler_private_IIR_FIR(
void *SS, /* I/O Resampler state */
opus_int16 out[], /* O Output signal */
const opus_int16 in[], /* I Input signal */
opus_int32 inLen /* I Number of input samples */
);
/* Description: Hybrid IIR/FIR polyphase implementation of resampling */
void silk_resampler_private_down_FIR(
void *SS, /* I/O Resampler state */
opus_int16 out[], /* O Output signal */
const opus_int16 in[], /* I Input signal */
opus_int32 inLen /* I Number of input samples */
);
/* Upsample by a factor 2, high quality */
void silk_resampler_private_up2_HQ_wrapper(
void *SS, /* I/O Resampler state (unused) */
opus_int16 *out, /* O Output signal [ 2 * len ] */
const opus_int16 *in, /* I Input signal [ len ] */
opus_int32 len /* I Number of input samples */
);
/* Upsample by a factor 2, high quality */
void silk_resampler_private_up2_HQ(
opus_int32 *S, /* I/O Resampler state [ 6 ] */
opus_int16 *out, /* O Output signal [ 2 * len ] */
const opus_int16 *in, /* I Input signal [ len ] */
opus_int32 len /* I Number of input samples */
);
/* Second order AR filter */
void silk_resampler_private_AR2(
opus_int32 S[], /* I/O State vector [ 2 ] */
opus_int32 out_Q8[], /* O Output signal */
const opus_int16 in[], /* I Input signal */
const opus_int16 A_Q14[], /* I AR coefficients, Q14 */
opus_int32 len /* I Signal length */
);
#ifdef __cplusplus
}
#endif
#endif /* SILK_RESAMPLER_H*/