1 /*********************************************************************** 2 Copyright (c) 2006-2011, Skype Limited. All rights reserved. 3 Redistribution and use in source and binary forms, with or without 4 modification, are permitted provided that the following conditions 5 are met: 6 - Redistributions of source code must retain the above copyright notice, 7 this list of conditions and the following disclaimer. 8 - Redistributions in binary form must reproduce the above copyright 9 notice, this list of conditions and the following disclaimer in the 10 documentation and/or other materials provided with the distribution. 11 - Neither the name of Internet Society, IETF or IETF Trust, nor the 12 names of specific contributors, may be used to endorse or promote 13 products derived from this software without specific prior written 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 17 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 19 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 POSSIBILITY OF SUCH DAMAGE. 26 ***********************************************************************/ 27 28 #ifndef SILK_RESAMPLER_STRUCTS_H 29 #define SILK_RESAMPLER_STRUCTS_H 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 #define SILK_RESAMPLER_MAX_FIR_ORDER 36 36 #define SILK_RESAMPLER_MAX_IIR_ORDER 6 37 38 typedef struct _silk_resampler_state_struct{ 39 opus_int32 sIIR[ SILK_RESAMPLER_MAX_IIR_ORDER ]; /* this must be the first element of this struct */ 40 union{ 41 opus_int32 i32[ SILK_RESAMPLER_MAX_FIR_ORDER ]; 42 opus_int16 i16[ SILK_RESAMPLER_MAX_FIR_ORDER ]; 43 } sFIR; 44 opus_int16 delayBuf[ 48 ]; 45 opus_int resampler_function; 46 opus_int batchSize; 47 opus_int32 invRatio_Q16; 48 opus_int FIR_Order; 49 opus_int FIR_Fracs; 50 opus_int Fs_in_kHz; 51 opus_int Fs_out_kHz; 52 opus_int inputDelay; 53 const opus_int16 *Coefs; 54 } silk_resampler_state_struct; 55 56 #ifdef __cplusplus 57 } 58 #endif 59 #endif /* SILK_RESAMPLER_STRUCTS_H */ 60 61