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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_PLC_H
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29 #define SILK_PLC_H
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30
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31 #include "main.h"
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32
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33 #define BWE_COEF 0.99
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34 #define V_PITCH_GAIN_START_MIN_Q14 11469 /* 0.7 in Q14 */
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35 #define V_PITCH_GAIN_START_MAX_Q14 15565 /* 0.95 in Q14 */
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36 #define MAX_PITCH_LAG_MS 18
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37 #define RAND_BUF_SIZE 128
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38 #define RAND_BUF_MASK ( RAND_BUF_SIZE - 1 )
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39 #define LOG2_INV_LPC_GAIN_HIGH_THRES 3 /* 2^3 = 8 dB LPC gain */
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40 #define LOG2_INV_LPC_GAIN_LOW_THRES 8 /* 2^8 = 24 dB LPC gain */
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41 #define PITCH_DRIFT_FAC_Q16 655 /* 0.01 in Q16 */
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42
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43 void silk_PLC_Reset(
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44 silk_decoder_state *psDec /* I/O Decoder state */
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45 );
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46
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47 void silk_PLC(
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48 silk_decoder_state *psDec, /* I/O Decoder state */
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49 silk_decoder_control *psDecCtrl, /* I/O Decoder control */
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50 opus_int16 frame[], /* I/O signal */
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51 opus_int lost, /* I Loss flag */
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52 int arch /* I Run-time architecture */
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53 );
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54
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55 void silk_PLC_glue_frames(
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56 silk_decoder_state *psDec, /* I/O decoder state */
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57 opus_int16 frame[], /* I/O signal */
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58 opus_int length /* I length of signal */
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59 );
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60
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61 #endif
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62
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