ref: 9edde42690a11afea6681275411d2c5f16484ea4
dir: /silk/SKP_Silk_resampler_structs.h/
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/* *
* 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