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1 /***********************************************************************
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2 Copyright (c) 2006-2011, Skype Limited. All rights reserved.
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3 Redistribution and use in source and binary forms, with or without
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4 modification, are permitted provided that the following conditions
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5 are met:
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6 - Redistributions of source code must retain the above copyright notice,
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7 this list of conditions and the following disclaimer.
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8 - Redistributions in binary form must reproduce the above copyright
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9 notice, this list of conditions and the following disclaimer in the
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10 documentation and/or other materials provided with the distribution.
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11 - Neither the name of Internet Society, IETF or IETF Trust, nor the
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12 names of specific contributors, may be used to endorse or promote
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13 products derived from this software without specific prior written
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14 permission.
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15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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16 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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17 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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18 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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19 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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20 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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21 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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22 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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23 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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24 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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25 POSSIBILITY OF SUCH DAMAGE.
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26 ***********************************************************************/
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27
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28 #ifndef SILK_PE_DEFINES_H
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29 #define SILK_PE_DEFINES_H
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30
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31 #include "SigProc_FIX.h"
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32
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33 /********************************************************/
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34 /* Definitions for pitch estimator */
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35 /********************************************************/
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36
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37 #define PE_MAX_FS_KHZ 16 /* Maximum sampling frequency used */
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38
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39 #define PE_MAX_NB_SUBFR 4
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40 #define PE_SUBFR_LENGTH_MS 5 /* 5 ms */
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41
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42 #define PE_LTP_MEM_LENGTH_MS ( 4 * PE_SUBFR_LENGTH_MS )
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43
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44 #define PE_MAX_FRAME_LENGTH_MS ( PE_LTP_MEM_LENGTH_MS + PE_MAX_NB_SUBFR * PE_SUBFR_LENGTH_MS )
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45 #define PE_MAX_FRAME_LENGTH ( PE_MAX_FRAME_LENGTH_MS * PE_MAX_FS_KHZ )
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46 #define PE_MAX_FRAME_LENGTH_ST_1 ( PE_MAX_FRAME_LENGTH >> 2 )
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47 #define PE_MAX_FRAME_LENGTH_ST_2 ( PE_MAX_FRAME_LENGTH >> 1 )
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48
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49 #define PE_MAX_LAG_MS 18 /* 18 ms -> 56 Hz */
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50 #define PE_MIN_LAG_MS 2 /* 2 ms -> 500 Hz */
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51 #define PE_MAX_LAG ( PE_MAX_LAG_MS * PE_MAX_FS_KHZ )
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52 #define PE_MIN_LAG ( PE_MIN_LAG_MS * PE_MAX_FS_KHZ )
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53
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54 #define PE_D_SRCH_LENGTH 24
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55
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56 #define PE_NB_STAGE3_LAGS 5
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57
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58 #define PE_NB_CBKS_STAGE2 3
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59 #define PE_NB_CBKS_STAGE2_EXT 11
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60
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61 #define PE_NB_CBKS_STAGE3_MAX 34
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62 #define PE_NB_CBKS_STAGE3_MID 24
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63 #define PE_NB_CBKS_STAGE3_MIN 16
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64
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65 #define PE_NB_CBKS_STAGE3_10MS 12
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66 #define PE_NB_CBKS_STAGE2_10MS 3
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67
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68 #define PE_SHORTLAG_BIAS 0.2f /* for logarithmic weighting */
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69 #define PE_PREVLAG_BIAS 0.2f /* for logarithmic weighting */
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70 #define PE_FLATCONTOUR_BIAS 0.05f
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71
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72 #define SILK_PE_MIN_COMPLEX 0
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73 #define SILK_PE_MID_COMPLEX 1
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74 #define SILK_PE_MAX_COMPLEX 2
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75
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76 /* Tables for 20 ms frames */
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77 extern const opus_int8 silk_CB_lags_stage2[ PE_MAX_NB_SUBFR ][ PE_NB_CBKS_STAGE2_EXT ];
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78 extern const opus_int8 silk_CB_lags_stage3[ PE_MAX_NB_SUBFR ][ PE_NB_CBKS_STAGE3_MAX ];
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79 extern const opus_int8 silk_Lag_range_stage3[ SILK_PE_MAX_COMPLEX + 1 ] [ PE_MAX_NB_SUBFR ][ 2 ];
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80 extern const opus_int8 silk_nb_cbk_searchs_stage3[ SILK_PE_MAX_COMPLEX + 1 ];
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81
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82 /* Tables for 10 ms frames */
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83 extern const opus_int8 silk_CB_lags_stage2_10_ms[ PE_MAX_NB_SUBFR >> 1][ 3 ];
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84 extern const opus_int8 silk_CB_lags_stage3_10_ms[ PE_MAX_NB_SUBFR >> 1 ][ 12 ];
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85 extern const opus_int8 silk_Lag_range_stage3_10_ms[ PE_MAX_NB_SUBFR >> 1 ][ 2 ];
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86
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87 #endif
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88
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