1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/libopus/silk/pitch_est_defines.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,88 @@
1.4 +/***********************************************************************
1.5 +Copyright (c) 2006-2011, Skype Limited. All rights reserved.
1.6 +Redistribution and use in source and binary forms, with or without
1.7 +modification, are permitted provided that the following conditions
1.8 +are met:
1.9 +- Redistributions of source code must retain the above copyright notice,
1.10 +this list of conditions and the following disclaimer.
1.11 +- Redistributions in binary form must reproduce the above copyright
1.12 +notice, this list of conditions and the following disclaimer in the
1.13 +documentation and/or other materials provided with the distribution.
1.14 +- Neither the name of Internet Society, IETF or IETF Trust, nor the
1.15 +names of specific contributors, may be used to endorse or promote
1.16 +products derived from this software without specific prior written
1.17 +permission.
1.18 +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
1.19 +AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.20 +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1.21 +ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
1.22 +LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
1.23 +CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
1.24 +SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
1.25 +INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
1.26 +CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
1.27 +ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1.28 +POSSIBILITY OF SUCH DAMAGE.
1.29 +***********************************************************************/
1.30 +
1.31 +#ifndef SILK_PE_DEFINES_H
1.32 +#define SILK_PE_DEFINES_H
1.33 +
1.34 +#include "SigProc_FIX.h"
1.35 +
1.36 +/********************************************************/
1.37 +/* Definitions for pitch estimator */
1.38 +/********************************************************/
1.39 +
1.40 +#define PE_MAX_FS_KHZ 16 /* Maximum sampling frequency used */
1.41 +
1.42 +#define PE_MAX_NB_SUBFR 4
1.43 +#define PE_SUBFR_LENGTH_MS 5 /* 5 ms */
1.44 +
1.45 +#define PE_LTP_MEM_LENGTH_MS ( 4 * PE_SUBFR_LENGTH_MS )
1.46 +
1.47 +#define PE_MAX_FRAME_LENGTH_MS ( PE_LTP_MEM_LENGTH_MS + PE_MAX_NB_SUBFR * PE_SUBFR_LENGTH_MS )
1.48 +#define PE_MAX_FRAME_LENGTH ( PE_MAX_FRAME_LENGTH_MS * PE_MAX_FS_KHZ )
1.49 +#define PE_MAX_FRAME_LENGTH_ST_1 ( PE_MAX_FRAME_LENGTH >> 2 )
1.50 +#define PE_MAX_FRAME_LENGTH_ST_2 ( PE_MAX_FRAME_LENGTH >> 1 )
1.51 +
1.52 +#define PE_MAX_LAG_MS 18 /* 18 ms -> 56 Hz */
1.53 +#define PE_MIN_LAG_MS 2 /* 2 ms -> 500 Hz */
1.54 +#define PE_MAX_LAG ( PE_MAX_LAG_MS * PE_MAX_FS_KHZ )
1.55 +#define PE_MIN_LAG ( PE_MIN_LAG_MS * PE_MAX_FS_KHZ )
1.56 +
1.57 +#define PE_D_SRCH_LENGTH 24
1.58 +
1.59 +#define PE_NB_STAGE3_LAGS 5
1.60 +
1.61 +#define PE_NB_CBKS_STAGE2 3
1.62 +#define PE_NB_CBKS_STAGE2_EXT 11
1.63 +
1.64 +#define PE_NB_CBKS_STAGE3_MAX 34
1.65 +#define PE_NB_CBKS_STAGE3_MID 24
1.66 +#define PE_NB_CBKS_STAGE3_MIN 16
1.67 +
1.68 +#define PE_NB_CBKS_STAGE3_10MS 12
1.69 +#define PE_NB_CBKS_STAGE2_10MS 3
1.70 +
1.71 +#define PE_SHORTLAG_BIAS 0.2f /* for logarithmic weighting */
1.72 +#define PE_PREVLAG_BIAS 0.2f /* for logarithmic weighting */
1.73 +#define PE_FLATCONTOUR_BIAS 0.05f
1.74 +
1.75 +#define SILK_PE_MIN_COMPLEX 0
1.76 +#define SILK_PE_MID_COMPLEX 1
1.77 +#define SILK_PE_MAX_COMPLEX 2
1.78 +
1.79 +/* Tables for 20 ms frames */
1.80 +extern const opus_int8 silk_CB_lags_stage2[ PE_MAX_NB_SUBFR ][ PE_NB_CBKS_STAGE2_EXT ];
1.81 +extern const opus_int8 silk_CB_lags_stage3[ PE_MAX_NB_SUBFR ][ PE_NB_CBKS_STAGE3_MAX ];
1.82 +extern const opus_int8 silk_Lag_range_stage3[ SILK_PE_MAX_COMPLEX + 1 ] [ PE_MAX_NB_SUBFR ][ 2 ];
1.83 +extern const opus_int8 silk_nb_cbk_searchs_stage3[ SILK_PE_MAX_COMPLEX + 1 ];
1.84 +
1.85 +/* Tables for 10 ms frames */
1.86 +extern const opus_int8 silk_CB_lags_stage2_10_ms[ PE_MAX_NB_SUBFR >> 1][ 3 ];
1.87 +extern const opus_int8 silk_CB_lags_stage3_10_ms[ PE_MAX_NB_SUBFR >> 1 ][ 12 ];
1.88 +extern const opus_int8 silk_Lag_range_stage3_10_ms[ PE_MAX_NB_SUBFR >> 1 ][ 2 ];
1.89 +
1.90 +#endif
1.91 +
