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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_RESAMPLER_STRUCTS_H
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29 #define SILK_RESAMPLER_STRUCTS_H
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30
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31 #ifdef __cplusplus
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32 extern "C" {
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33 #endif
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34
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35 #define SILK_RESAMPLER_MAX_FIR_ORDER 36
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36 #define SILK_RESAMPLER_MAX_IIR_ORDER 6
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37
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38 typedef struct _silk_resampler_state_struct{
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39 opus_int32 sIIR[ SILK_RESAMPLER_MAX_IIR_ORDER ]; /* this must be the first element of this struct */
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40 union{
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41 opus_int32 i32[ SILK_RESAMPLER_MAX_FIR_ORDER ];
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42 opus_int16 i16[ SILK_RESAMPLER_MAX_FIR_ORDER ];
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43 } sFIR;
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44 opus_int16 delayBuf[ 48 ];
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45 opus_int resampler_function;
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46 opus_int batchSize;
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47 opus_int32 invRatio_Q16;
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48 opus_int FIR_Order;
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49 opus_int FIR_Fracs;
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50 opus_int Fs_in_kHz;
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51 opus_int Fs_out_kHz;
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52 opus_int inputDelay;
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53 const opus_int16 *Coefs;
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54 } silk_resampler_state_struct;
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55
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56 #ifdef __cplusplus
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57 }
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58 #endif
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59 #endif /* SILK_RESAMPLER_STRUCTS_H */
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60
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