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| Copyright (c) 2006-2011, Skype Limited. All rights reserved. |
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| modification, are permitted provided that the following conditions |
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| permission. |
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| ***********************************************************************/ |
| |
| #ifndef SILK_FIX_RESAMPLER_ROM_H |
| #define SILK_FIX_RESAMPLER_ROM_H |
| |
| #ifdef __cplusplus |
| extern "C" |
| { |
| #endif |
| |
| #include "typedef.h" |
| #include "resampler_structs.h" |
| |
| #define RESAMPLER_DOWN_ORDER_FIR0 18 |
| #define RESAMPLER_DOWN_ORDER_FIR1 24 |
| #define RESAMPLER_DOWN_ORDER_FIR2 36 |
| #define RESAMPLER_ORDER_FIR_12 8 |
| |
| /* Tables for 2x downsampler */ |
| static const opus_int16 silk_resampler_down2_0 = 9872; |
| static const opus_int16 silk_resampler_down2_1 = 39809 - 65536; |
| |
| /* Tables for 2x upsampler, high quality */ |
| static const opus_int16 silk_resampler_up2_hq_0[ 3 ] = { 1746, 14986, 39083 - 65536 }; |
| static const opus_int16 silk_resampler_up2_hq_1[ 3 ] = { 6854, 25769, 55542 - 65536 }; |
| |
| /* Tables with IIR and FIR coefficients for fractional downsamplers */ |
| extern const opus_int16 silk_Resampler_3_4_COEFS[ 2 + 3 * RESAMPLER_DOWN_ORDER_FIR0 / 2 ]; |
| extern const opus_int16 silk_Resampler_2_3_COEFS[ 2 + 2 * RESAMPLER_DOWN_ORDER_FIR0 / 2 ]; |
| extern const opus_int16 silk_Resampler_1_2_COEFS[ 2 + RESAMPLER_DOWN_ORDER_FIR1 / 2 ]; |
| extern const opus_int16 silk_Resampler_1_3_COEFS[ 2 + RESAMPLER_DOWN_ORDER_FIR2 / 2 ]; |
| extern const opus_int16 silk_Resampler_1_4_COEFS[ 2 + RESAMPLER_DOWN_ORDER_FIR2 / 2 ]; |
| extern const opus_int16 silk_Resampler_1_6_COEFS[ 2 + RESAMPLER_DOWN_ORDER_FIR2 / 2 ]; |
| extern const opus_int16 silk_Resampler_2_3_COEFS_LQ[ 2 + 2 * 2 ]; |
| |
| /* Table with interplation fractions of 1/24, 3/24, ..., 23/24 */ |
| extern const opus_int16 silk_resampler_frac_FIR_12[ 12 ][ RESAMPLER_ORDER_FIR_12 / 2 ]; |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* SILK_FIX_RESAMPLER_ROM_H */ |
