ref: 79f303909a7e14d743f2c3e4670a936525bfed0c
dir: /silk/SKP_Silk_resampler_structs.h/
/*********************************************************************** Copyright (c) 2006-2011, Skype Limited. All rights reserved. Redistribution and use in source and binary forms, with or without modification, (subject to the limitations in the disclaimer below) are permitted provided that the following conditions are met: - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. - Neither the name of Skype Limited, nor the names of specific contributors, may be used to endorse or promote products derived from this software without specific prior written permission. NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ***********************************************************************/ /* * * File Name: SKP_Silk_resampler_structs.h * * * * Description: Structs for IIR/FIR resamplers * * * * Copyright 2010 (c), Skype Limited * * All rights reserved. * * * * */ #ifndef SKP_Silk_RESAMPLER_STRUCTS_H #define SKP_Silk_RESAMPLER_STRUCTS_H #ifdef __cplusplus extern "C" { #endif /* Flag to enable support for input/output sampling rates above 48 kHz. Turn off for embedded devices */ #define RESAMPLER_SUPPORT_ABOVE_48KHZ 1 #define SKP_Silk_RESAMPLER_MAX_FIR_ORDER 16 #define SKP_Silk_RESAMPLER_MAX_IIR_ORDER 6 typedef struct _SKP_Silk_resampler_state_struct{ SKP_int32 sIIR[ SKP_Silk_RESAMPLER_MAX_IIR_ORDER ]; /* this must be the first element of this struct */ SKP_int32 sFIR[ SKP_Silk_RESAMPLER_MAX_FIR_ORDER ]; SKP_int32 sDown2[ 2 ]; void (*resampler_function)( void *, SKP_int16 *, const SKP_int16 *, SKP_int32 ); void (*up2_function)( SKP_int32 *, SKP_int16 *, const SKP_int16 *, SKP_int32 ); SKP_int32 batchSize; SKP_int32 invRatio_Q16; SKP_int32 FIR_Fracs; SKP_int32 input2x; const SKP_int16 *Coefs; #if RESAMPLER_SUPPORT_ABOVE_48KHZ SKP_int32 sDownPre[ 2 ]; SKP_int32 sUpPost[ 2 ]; void (*down_pre_function)( SKP_int32 *, SKP_int16 *, const SKP_int16 *, SKP_int32 ); void (*up_post_function)( SKP_int32 *, SKP_int16 *, const SKP_int16 *, SKP_int32 ); SKP_int32 batchSizePrePost; SKP_int32 ratio_Q16; SKP_int32 nPreDownsamplers; SKP_int32 nPostUpsamplers; #endif SKP_int32 magic_number; } SKP_Silk_resampler_state_struct; #ifdef __cplusplus } #endif #endif // SKP_Silk_RESAMPLER_STRUCTS_H