The Tor Browser: media/libopus/silk/pitch_est

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

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     2 Copyright (c) 2006-2011, Skype Limited. All rights reserved.

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    10 documentation and/or other materials provided with the distribution.

    11 - Neither the name of Internet Society, IETF or IETF Trust, nor the

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    14 permission.

    15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

    16 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

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    18 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE

    19 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

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    24 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

    25 POSSIBILITY OF SUCH DAMAGE.

    26 ***********************************************************************/

    28 #ifndef SILK_PE_DEFINES_H

    29 #define SILK_PE_DEFINES_H

    31 #include "SigProc_FIX.h"

    33 /********************************************************/

    34 /* Definitions for pitch estimator                      */

    35 /********************************************************/

    37 #define PE_MAX_FS_KHZ               16 /* Maximum sampling frequency used */

    39 #define PE_MAX_NB_SUBFR             4

    40 #define PE_SUBFR_LENGTH_MS          5   /* 5 ms */

    42 #define PE_LTP_MEM_LENGTH_MS        ( 4 * PE_SUBFR_LENGTH_MS )

    44 #define PE_MAX_FRAME_LENGTH_MS      ( PE_LTP_MEM_LENGTH_MS + PE_MAX_NB_SUBFR * PE_SUBFR_LENGTH_MS )

    45 #define PE_MAX_FRAME_LENGTH         ( PE_MAX_FRAME_LENGTH_MS * PE_MAX_FS_KHZ )

    46 #define PE_MAX_FRAME_LENGTH_ST_1    ( PE_MAX_FRAME_LENGTH >> 2 )

    47 #define PE_MAX_FRAME_LENGTH_ST_2    ( PE_MAX_FRAME_LENGTH >> 1 )

    49 #define PE_MAX_LAG_MS               18           /* 18 ms -> 56 Hz */

    50 #define PE_MIN_LAG_MS               2            /* 2 ms -> 500 Hz */

    51 #define PE_MAX_LAG                  ( PE_MAX_LAG_MS * PE_MAX_FS_KHZ )

    52 #define PE_MIN_LAG                  ( PE_MIN_LAG_MS * PE_MAX_FS_KHZ )

    54 #define PE_D_SRCH_LENGTH            24

    56 #define PE_NB_STAGE3_LAGS           5

    58 #define PE_NB_CBKS_STAGE2           3

    59 #define PE_NB_CBKS_STAGE2_EXT       11

    61 #define PE_NB_CBKS_STAGE3_MAX       34

    62 #define PE_NB_CBKS_STAGE3_MID       24

    63 #define PE_NB_CBKS_STAGE3_MIN       16

    65 #define PE_NB_CBKS_STAGE3_10MS      12

    66 #define PE_NB_CBKS_STAGE2_10MS      3

    68 #define PE_SHORTLAG_BIAS            0.2f    /* for logarithmic weighting    */

    69 #define PE_PREVLAG_BIAS             0.2f    /* for logarithmic weighting    */

    70 #define PE_FLATCONTOUR_BIAS         0.05f

    72 #define SILK_PE_MIN_COMPLEX         0

    73 #define SILK_PE_MID_COMPLEX         1

    74 #define SILK_PE_MAX_COMPLEX         2

    76 /* Tables for 20 ms frames */

    77 extern const opus_int8 silk_CB_lags_stage2[ PE_MAX_NB_SUBFR ][ PE_NB_CBKS_STAGE2_EXT ];

    78 extern const opus_int8 silk_CB_lags_stage3[ PE_MAX_NB_SUBFR ][ PE_NB_CBKS_STAGE3_MAX ];

    79 extern const opus_int8 silk_Lag_range_stage3[ SILK_PE_MAX_COMPLEX + 1 ] [ PE_MAX_NB_SUBFR ][ 2 ];

    80 extern const opus_int8 silk_nb_cbk_searchs_stage3[ SILK_PE_MAX_COMPLEX + 1 ];

    82 /* Tables for 10 ms frames */

    83 extern const opus_int8 silk_CB_lags_stage2_10_ms[ PE_MAX_NB_SUBFR >> 1][ 3 ];

    84 extern const opus_int8 silk_CB_lags_stage3_10_ms[ PE_MAX_NB_SUBFR >> 1 ][ 12 ];

    85 extern const opus_int8 silk_Lag_range_stage3_10_ms[ PE_MAX_NB_SUBFR >> 1 ][ 2 ];

    87 #endif

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