ref: d099f132fc916d16c1097e7521a069a7bf6838c1
dir: /silk/silk_resampler_rom.h/
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#ifndef _SILK_FIX_RESAMPLER_ROM_H_
#define _SILK_FIX_RESAMPLER_ROM_H_
#ifdef __cplusplus
extern "C"
{
#endif
#include "silk_typedef.h"
#include "silk_resampler_structs.h"
#define RESAMPLER_DOWN_ORDER_FIR 16
#define RESAMPLER_ORDER_FIR_144 6
/* Tables for 2x downsampler. Values above 32767 intentionally wrap to a negative value. */
extern const opus_int16 silk_resampler_down2_0;
extern const opus_int16 silk_resampler_down2_1;
/* Tables for 2x upsampler, low quality. Values above 32767 intentionally wrap to a negative value. */
extern const opus_int16 silk_resampler_up2_lq_0;
extern const opus_int16 silk_resampler_up2_lq_1;
/* Tables for 2x upsampler, high quality. Values above 32767 intentionally wrap to a negative value. */
extern const opus_int16 silk_resampler_up2_hq_0[ 2 ];
extern const opus_int16 silk_resampler_up2_hq_1[ 2 ];
extern const opus_int16 silk_resampler_up2_hq_notch[ 4 ];
/* Tables with IIR and FIR coefficients for fractional downsamplers */
extern const opus_int16 silk_Resampler_3_4_COEFS[ 2 + 3 * RESAMPLER_DOWN_ORDER_FIR / 2 ];
extern const opus_int16 silk_Resampler_2_3_COEFS[ 2 + 2 * RESAMPLER_DOWN_ORDER_FIR / 2 ];
extern const opus_int16 silk_Resampler_1_2_COEFS[ 2 + RESAMPLER_DOWN_ORDER_FIR / 2 ];
extern const opus_int16 silk_Resampler_3_8_COEFS[ 2 + 3 * RESAMPLER_DOWN_ORDER_FIR / 2 ];
extern const opus_int16 silk_Resampler_1_3_COEFS[ 2 + RESAMPLER_DOWN_ORDER_FIR / 2 ];
extern const opus_int16 silk_Resampler_2_3_COEFS_LQ[ 2 + 2 * 2 ];
extern const opus_int16 silk_Resampler_1_3_COEFS_LQ[ 2 + 3 ];
/* Tables with coefficients for 4th order ARMA filter */
extern const opus_int16 silk_Resampler_320_441_ARMA4_COEFS[ 7 ];
extern const opus_int16 silk_Resampler_240_441_ARMA4_COEFS[ 7 ];
extern const opus_int16 silk_Resampler_160_441_ARMA4_COEFS[ 7 ];
extern const opus_int16 silk_Resampler_120_441_ARMA4_COEFS[ 7 ];
extern const opus_int16 silk_Resampler_80_441_ARMA4_COEFS[ 7 ];
/* Table with interplation fractions of 1/288 : 2/288 : 287/288 (432 Words) */
extern const opus_int16 silk_resampler_frac_FIR_144[ 144 ][ RESAMPLER_ORDER_FIR_144 / 2 ];
#ifdef __cplusplus
}
#endif
#endif /* _SILK_FIX_RESAMPLER_ROM_H_*/