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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 #ifdef HAVE_CONFIG_H
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29 #include "config.h"
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30 #endif
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31 #ifdef FIXED_POINT
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32 #include "main_FIX.h"
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33 #else
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34 #include "main_FLP.h"
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35 #endif
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36 #include "tuning_parameters.h"
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37 #include "cpu_support.h"
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38
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39 /*********************************/
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40 /* Initialize Silk Encoder state */
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41 /*********************************/
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42 opus_int silk_init_encoder(
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43 silk_encoder_state_Fxx *psEnc, /* I/O Pointer to Silk FIX encoder state */
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44 int arch /* I Run-time architecture */
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45 )
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46 {
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47 opus_int ret = 0;
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48
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49 /* Clear the entire encoder state */
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50 silk_memset( psEnc, 0, sizeof( silk_encoder_state_Fxx ) );
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51
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52 psEnc->sCmn.arch = arch;
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53
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54 psEnc->sCmn.variable_HP_smth1_Q15 = silk_LSHIFT( silk_lin2log( SILK_FIX_CONST( VARIABLE_HP_MIN_CUTOFF_HZ, 16 ) ) - ( 16 << 7 ), 8 );
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55 psEnc->sCmn.variable_HP_smth2_Q15 = psEnc->sCmn.variable_HP_smth1_Q15;
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56
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57 /* Used to deactivate LSF interpolation, pitch prediction */
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58 psEnc->sCmn.first_frame_after_reset = 1;
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59
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60 /* Initialize Silk VAD */
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61 ret += silk_VAD_Init( &psEnc->sCmn.sVAD );
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62
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63 return ret;
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64 }
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