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1 /*********************************************************************** | 1 /*********************************************************************** |
2 Copyright (c) 2006-2011, Skype Limited. All rights reserved. | 2 Copyright (c) 2006-2011, Skype Limited. All rights reserved. |
3 Redistribution and use in source and binary forms, with or without | 3 Redistribution and use in source and binary forms, with or without |
4 modification, are permitted provided that the following conditions | 4 modification, are permitted provided that the following conditions |
5 are met: | 5 are met: |
6 - Redistributions of source code must retain the above copyright notice, | 6 - Redistributions of source code must retain the above copyright notice, |
7 this list of conditions and the following disclaimer. | 7 this list of conditions and the following disclaimer. |
8 - Redistributions in binary form must reproduce the above copyright | 8 - Redistributions in binary form must reproduce the above copyright |
9 notice, this list of conditions and the following disclaimer in the | 9 notice, this list of conditions and the following disclaimer in the |
10 documentation and/or other materials provided with the distribution. | 10 documentation and/or other materials provided with the distribution. |
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35 | 35 |
36 #include "typedef.h" | 36 #include "typedef.h" |
37 #include "resampler_structs.h" | 37 #include "resampler_structs.h" |
38 | 38 |
39 #define RESAMPLER_DOWN_ORDER_FIR0 18 | 39 #define RESAMPLER_DOWN_ORDER_FIR0 18 |
40 #define RESAMPLER_DOWN_ORDER_FIR1 24 | 40 #define RESAMPLER_DOWN_ORDER_FIR1 24 |
41 #define RESAMPLER_DOWN_ORDER_FIR2 36 | 41 #define RESAMPLER_DOWN_ORDER_FIR2 36 |
42 #define RESAMPLER_ORDER_FIR_12 8 | 42 #define RESAMPLER_ORDER_FIR_12 8 |
43 | 43 |
44 /* Tables for 2x downsampler */ | 44 /* Tables for 2x downsampler */ |
45 extern const opus_int16 silk_resampler_down2_0; | 45 static const opus_int16 silk_resampler_down2_0 = 9872; |
46 extern const opus_int16 silk_resampler_down2_1; | 46 static const opus_int16 silk_resampler_down2_1 = 39809 - 65536; |
47 | 47 |
48 /* Tables for 2x upsampler, high quality */ | 48 /* Tables for 2x upsampler, high quality */ |
49 extern const opus_int16 silk_resampler_up2_hq_0[ 3 ]; | 49 static const opus_int16 silk_resampler_up2_hq_0[ 3 ] = { 1746, 14986, 39083 - 65
536 }; |
50 extern const opus_int16 silk_resampler_up2_hq_1[ 3 ]; | 50 static const opus_int16 silk_resampler_up2_hq_1[ 3 ] = { 6854, 25769, 55542 - 65
536 }; |
51 | 51 |
52 /* Tables with IIR and FIR coefficients for fractional downsamplers */ | 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_F
IR0 / 2 ]; | 53 extern const opus_int16 silk_Resampler_3_4_COEFS[ 2 + 3 * RESAMPLER_DOWN_ORDER_F
IR0 / 2 ]; |
54 extern const opus_int16 silk_Resampler_2_3_COEFS[ 2 + 2 * RESAMPLER_DOWN_ORDER_F
IR0 / 2 ]; | 54 extern const opus_int16 silk_Resampler_2_3_COEFS[ 2 + 2 * RESAMPLER_DOWN_ORDER_F
IR0 / 2 ]; |
55 extern const opus_int16 silk_Resampler_1_2_COEFS[ 2 + RESAMPLER_DOWN_ORDER_F
IR1 / 2 ]; | 55 extern const opus_int16 silk_Resampler_1_2_COEFS[ 2 + RESAMPLER_DOWN_ORDER_F
IR1 / 2 ]; |
56 extern const opus_int16 silk_Resampler_1_3_COEFS[ 2 + RESAMPLER_DOWN_ORDER_F
IR2 / 2 ]; | 56 extern const opus_int16 silk_Resampler_1_3_COEFS[ 2 + RESAMPLER_DOWN_ORDER_F
IR2 / 2 ]; |
57 extern const opus_int16 silk_Resampler_1_4_COEFS[ 2 + RESAMPLER_DOWN_ORDER_F
IR2 / 2 ]; | 57 extern const opus_int16 silk_Resampler_1_4_COEFS[ 2 + RESAMPLER_DOWN_ORDER_F
IR2 / 2 ]; |
58 extern const opus_int16 silk_Resampler_1_6_COEFS[ 2 + RESAMPLER_DOWN_ORDER_F
IR2 / 2 ]; | 58 extern const opus_int16 silk_Resampler_1_6_COEFS[ 2 + RESAMPLER_DOWN_ORDER_F
IR2 / 2 ]; |
59 extern const opus_int16 silk_Resampler_2_3_COEFS_LQ[ 2 + 2 * 2 ]; | 59 extern const opus_int16 silk_Resampler_2_3_COEFS_LQ[ 2 + 2 * 2 ]; |
60 | 60 |
61 /* Table with interplation fractions of 1/24, 3/24, ..., 23/24 */ | 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 ]; | 62 extern const opus_int16 silk_resampler_frac_FIR_12[ 12 ][ RESAMPLER_ORDER_FIR_12
/ 2 ]; |
63 | 63 |
64 #ifdef __cplusplus | 64 #ifdef __cplusplus |
65 } | 65 } |
66 #endif | 66 #endif |
67 | 67 |
68 #endif /* SILK_FIX_RESAMPLER_ROM_H */ | 68 #endif /* SILK_FIX_RESAMPLER_ROM_H */ |
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