1*a58d3d2aSXin Li /*********************************************************************** 2*a58d3d2aSXin Li Copyright (c) 2006-2011, Skype Limited. All rights reserved. 3*a58d3d2aSXin Li Redistribution and use in source and binary forms, with or without 4*a58d3d2aSXin Li modification, are permitted provided that the following conditions 5*a58d3d2aSXin Li are met: 6*a58d3d2aSXin Li - Redistributions of source code must retain the above copyright notice, 7*a58d3d2aSXin Li this list of conditions and the following disclaimer. 8*a58d3d2aSXin Li - Redistributions in binary form must reproduce the above copyright 9*a58d3d2aSXin Li notice, this list of conditions and the following disclaimer in the 10*a58d3d2aSXin Li documentation and/or other materials provided with the distribution. 11*a58d3d2aSXin Li - Neither the name of Internet Society, IETF or IETF Trust, nor the 12*a58d3d2aSXin Li names of specific contributors, may be used to endorse or promote 13*a58d3d2aSXin Li products derived from this software without specific prior written 14*a58d3d2aSXin Li permission. 15*a58d3d2aSXin Li THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 16*a58d3d2aSXin Li AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17*a58d3d2aSXin Li IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18*a58d3d2aSXin Li ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 19*a58d3d2aSXin Li LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20*a58d3d2aSXin Li CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21*a58d3d2aSXin Li SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22*a58d3d2aSXin Li INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23*a58d3d2aSXin Li CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24*a58d3d2aSXin Li ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25*a58d3d2aSXin Li POSSIBILITY OF SUCH DAMAGE. 26*a58d3d2aSXin Li ***********************************************************************/ 27*a58d3d2aSXin Li 28*a58d3d2aSXin Li #ifndef SILK_RESAMPLER_STRUCTS_H 29*a58d3d2aSXin Li #define SILK_RESAMPLER_STRUCTS_H 30*a58d3d2aSXin Li 31*a58d3d2aSXin Li #ifdef __cplusplus 32*a58d3d2aSXin Li extern "C" { 33*a58d3d2aSXin Li #endif 34*a58d3d2aSXin Li 35*a58d3d2aSXin Li #define SILK_RESAMPLER_MAX_FIR_ORDER 36 36*a58d3d2aSXin Li #define SILK_RESAMPLER_MAX_IIR_ORDER 6 37*a58d3d2aSXin Li 38*a58d3d2aSXin Li typedef struct _silk_resampler_state_struct{ 39*a58d3d2aSXin Li opus_int32 sIIR[ SILK_RESAMPLER_MAX_IIR_ORDER ]; /* this must be the first element of this struct */ 40*a58d3d2aSXin Li union{ 41*a58d3d2aSXin Li opus_int32 i32[ SILK_RESAMPLER_MAX_FIR_ORDER ]; 42*a58d3d2aSXin Li opus_int16 i16[ SILK_RESAMPLER_MAX_FIR_ORDER ]; 43*a58d3d2aSXin Li } sFIR; 44*a58d3d2aSXin Li opus_int16 delayBuf[ 48 ]; 45*a58d3d2aSXin Li opus_int resampler_function; 46*a58d3d2aSXin Li opus_int batchSize; 47*a58d3d2aSXin Li opus_int32 invRatio_Q16; 48*a58d3d2aSXin Li opus_int FIR_Order; 49*a58d3d2aSXin Li opus_int FIR_Fracs; 50*a58d3d2aSXin Li opus_int Fs_in_kHz; 51*a58d3d2aSXin Li opus_int Fs_out_kHz; 52*a58d3d2aSXin Li opus_int inputDelay; 53*a58d3d2aSXin Li const opus_int16 *Coefs; 54*a58d3d2aSXin Li } silk_resampler_state_struct; 55*a58d3d2aSXin Li 56*a58d3d2aSXin Li #ifdef __cplusplus 57*a58d3d2aSXin Li } 58*a58d3d2aSXin Li #endif 59*a58d3d2aSXin Li #endif /* SILK_RESAMPLER_STRUCTS_H */ 60*a58d3d2aSXin Li 61