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resampler_rom.h
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27 
28 #ifndef SILK_FIX_RESAMPLER_ROM_H
29 #define SILK_FIX_RESAMPLER_ROM_H
30 
31 #ifdef __cplusplus
32 extern "C"
33 {
34 #endif
35 
36 #include "typedef.h"
37 #include "resampler_structs.h"
38 
39 #define RESAMPLER_DOWN_ORDER_FIR0 18
40 #define RESAMPLER_DOWN_ORDER_FIR1 24
41 #define RESAMPLER_DOWN_ORDER_FIR2 36
42 #define RESAMPLER_ORDER_FIR_12 8
43 
44 /* Tables for 2x downsampler */
45 static const opus_int16 silk_resampler_down2_0 = 9872;
46 static const opus_int16 silk_resampler_down2_1 = 39809 - 65536;
47 
48 /* Tables for 2x upsampler, high quality */
49 static const opus_int16 silk_resampler_up2_hq_0[ 3 ] = { 1746, 14986, 39083 - 65536 };
50 static const opus_int16 silk_resampler_up2_hq_1[ 3 ] = { 6854, 25769, 55542 - 65536 };
51 
52 /* Tables with IIR and FIR coefficients for fractional downsamplers */
53 extern const opus_int16 silk_Resampler_3_4_COEFS[ 2 + 3 * RESAMPLER_DOWN_ORDER_FIR0 / 2 ];
54 extern const opus_int16 silk_Resampler_2_3_COEFS[ 2 + 2 * RESAMPLER_DOWN_ORDER_FIR0 / 2 ];
55 extern const opus_int16 silk_Resampler_1_2_COEFS[ 2 + RESAMPLER_DOWN_ORDER_FIR1 / 2 ];
56 extern const opus_int16 silk_Resampler_1_3_COEFS[ 2 + RESAMPLER_DOWN_ORDER_FIR2 / 2 ];
57 extern const opus_int16 silk_Resampler_1_4_COEFS[ 2 + RESAMPLER_DOWN_ORDER_FIR2 / 2 ];
58 extern const opus_int16 silk_Resampler_1_6_COEFS[ 2 + RESAMPLER_DOWN_ORDER_FIR2 / 2 ];
59 extern const opus_int16 silk_Resampler_2_3_COEFS_LQ[ 2 + 2 * 2 ];
60 
61 /* Table with interplation fractions of 1/24, 3/24, ..., 23/24 */
62 extern const opus_int16 silk_resampler_frac_FIR_12[ 12 ][ RESAMPLER_ORDER_FIR_12 / 2 ];
63 
64 #ifdef __cplusplus
65 }
66 #endif
67 
68 #endif /* SILK_FIX_RESAMPLER_ROM_H */
opus_int16
short opus_int16
Definition: opus_types.h:144
silk_Resampler_1_6_COEFS
const opus_int16 silk_Resampler_1_6_COEFS[2+RESAMPLER_DOWN_ORDER_FIR2/2]
Definition: resampler_rom.c:71
silk_Resampler_1_4_COEFS
const opus_int16 silk_Resampler_1_4_COEFS[2+RESAMPLER_DOWN_ORDER_FIR2/2]
Definition: resampler_rom.c:66
silk_Resampler_2_3_COEFS_LQ
const opus_int16 silk_Resampler_2_3_COEFS_LQ[2+2 *2]
Definition: resampler_rom.c:76
silk_Resampler_2_3_COEFS
const opus_int16 silk_Resampler_2_3_COEFS[2+2 *RESAMPLER_DOWN_ORDER_FIR0/2]
Definition: resampler_rom.c:50
RESAMPLER_DOWN_ORDER_FIR1
#define RESAMPLER_DOWN_ORDER_FIR1
Definition: resampler_rom.h:40
silk_Resampler_1_2_COEFS
const opus_int16 silk_Resampler_1_2_COEFS[2+RESAMPLER_DOWN_ORDER_FIR1/2]
Definition: resampler_rom.c:56
silk_resampler_frac_FIR_12
const opus_int16 silk_resampler_frac_FIR_12[12][RESAMPLER_ORDER_FIR_12/2]
Definition: resampler_rom.c:83
resampler_structs.h
silk_Resampler_1_3_COEFS
const opus_int16 silk_Resampler_1_3_COEFS[2+RESAMPLER_DOWN_ORDER_FIR2/2]
Definition: resampler_rom.c:61
RESAMPLER_DOWN_ORDER_FIR0
#define RESAMPLER_DOWN_ORDER_FIR0
Definition: resampler_rom.h:39
silk_Resampler_3_4_COEFS
const opus_int16 silk_Resampler_3_4_COEFS[2+3 *RESAMPLER_DOWN_ORDER_FIR0/2]
Definition: resampler_rom.c:43
RESAMPLER_ORDER_FIR_12
#define RESAMPLER_ORDER_FIR_12
Definition: resampler_rom.h:42
RESAMPLER_DOWN_ORDER_FIR2
#define RESAMPLER_DOWN_ORDER_FIR2
Definition: resampler_rom.h:41
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