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Diffstat (limited to 'src/opus-1.0.2/silk/float/SigProc_FLP.h')
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1 files changed, 0 insertions, 203 deletions
diff --git a/src/opus-1.0.2/silk/float/SigProc_FLP.h b/src/opus-1.0.2/silk/float/SigProc_FLP.h deleted file mode 100644 index 036b46da..00000000 --- a/src/opus-1.0.2/silk/float/SigProc_FLP.h +++ /dev/null @@ -1,203 +0,0 @@ -/*********************************************************************** -Copyright (c) 2006-2011, Skype Limited. All rights reserved. -Redistribution and use in source and binary forms, with or without -modification, 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 Internet Society, IETF or IETF Trust, nor the -names of specific contributors, may be used to endorse or promote -products derived from this software without specific prior written -permission. -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. -***********************************************************************/ - -#ifndef SILK_SIGPROC_FLP_H -#define SILK_SIGPROC_FLP_H - -#include "SigProc_FIX.h" -#include "float_cast.h" -#include <math.h> - -#ifdef __cplusplus -extern "C" -{ -#endif - -/********************************************************************/ -/* SIGNAL PROCESSING FUNCTIONS */ -/********************************************************************/ - -/* Chirp (bw expand) LP AR filter */ -void silk_bwexpander_FLP( - silk_float *ar, /* I/O AR filter to be expanded (without leading 1) */ - const opus_int d, /* I length of ar */ - const silk_float chirp /* I chirp factor (typically in range (0..1) ) */ -); - -/* compute inverse of LPC prediction gain, and */ -/* test if LPC coefficients are stable (all poles within unit circle) */ -/* this code is based on silk_FLP_a2k() */ -silk_float silk_LPC_inverse_pred_gain_FLP( /* O return inverse prediction gain, energy domain */ - const silk_float *A, /* I prediction coefficients [order] */ - opus_int32 order /* I prediction order */ -); - -silk_float silk_schur_FLP( /* O returns residual energy */ - silk_float refl_coef[], /* O reflection coefficients (length order) */ - const silk_float auto_corr[], /* I autocorrelation sequence (length order+1) */ - opus_int order /* I order */ -); - -void silk_k2a_FLP( - silk_float *A, /* O prediction coefficients [order] */ - const silk_float *rc, /* I reflection coefficients [order] */ - opus_int32 order /* I prediction order */ -); - -/* Solve the normal equations using the Levinson-Durbin recursion */ -silk_float silk_levinsondurbin_FLP( /* O prediction error energy */ - silk_float A[], /* O prediction coefficients [order] */ - const silk_float corr[], /* I input auto-correlations [order + 1] */ - const opus_int order /* I prediction order */ -); - -/* compute autocorrelation */ -void silk_autocorrelation_FLP( - silk_float *results, /* O result (length correlationCount) */ - const silk_float *inputData, /* I input data to correlate */ - opus_int inputDataSize, /* I length of input */ - opus_int correlationCount /* I number of correlation taps to compute */ -); - -opus_int silk_pitch_analysis_core_FLP( /* O Voicing estimate: 0 voiced, 1 unvoiced */ - const silk_float *frame, /* I Signal of length PE_FRAME_LENGTH_MS*Fs_kHz */ - opus_int *pitch_out, /* O Pitch lag values [nb_subfr] */ - opus_int16 *lagIndex, /* O Lag Index */ - opus_int8 *contourIndex, /* O Pitch contour Index */ - silk_float *LTPCorr, /* I/O Normalized correlation; input: value from previous frame */ - opus_int prevLag, /* I Last lag of previous frame; set to zero is unvoiced */ - const silk_float search_thres1, /* I First stage threshold for lag candidates 0 - 1 */ - const silk_float search_thres2, /* I Final threshold for lag candidates 0 - 1 */ - const opus_int Fs_kHz, /* I sample frequency (kHz) */ - const opus_int complexity, /* I Complexity setting, 0-2, where 2 is highest */ - const opus_int nb_subfr /* I Number of 5 ms subframes */ -); - -void silk_insertion_sort_decreasing_FLP( - silk_float *a, /* I/O Unsorted / Sorted vector */ - opus_int *idx, /* O Index vector for the sorted elements */ - const opus_int L, /* I Vector length */ - const opus_int K /* I Number of correctly sorted positions */ -); - -/* Compute reflection coefficients from input signal */ -silk_float silk_burg_modified_FLP( /* O returns residual energy */ - silk_float A[], /* O prediction coefficients (length order) */ - const silk_float x[], /* I input signal, length: nb_subfr*(D+L_sub) */ - const silk_float minInvGain, /* I minimum inverse prediction gain */ - const opus_int subfr_length, /* I input signal subframe length (incl. D preceding samples) */ - const opus_int nb_subfr, /* I number of subframes stacked in x */ - const opus_int D /* I order */ -); - -/* multiply a vector by a constant */ -void silk_scale_vector_FLP( - silk_float *data1, - silk_float gain, - opus_int dataSize -); - -/* copy and multiply a vector by a constant */ -void silk_scale_copy_vector_FLP( - silk_float *data_out, - const silk_float *data_in, - silk_float gain, - opus_int dataSize -); - -/* inner product of two silk_float arrays, with result as double */ -double silk_inner_product_FLP( - const silk_float *data1, - const silk_float *data2, - opus_int dataSize -); - -/* sum of squares of a silk_float array, with result as double */ -double silk_energy_FLP( - const silk_float *data, - opus_int dataSize -); - -/********************************************************************/ -/* MACROS */ -/********************************************************************/ - -#define PI (3.1415926536f) - -#define silk_min_float( a, b ) (((a) < (b)) ? (a) : (b)) -#define silk_max_float( a, b ) (((a) > (b)) ? (a) : (b)) -#define silk_abs_float( a ) ((silk_float)fabs(a)) - -/* sigmoid function */ -static inline silk_float silk_sigmoid( silk_float x ) -{ - return (silk_float)(1.0 / (1.0 + exp(-x))); -} - -/* floating-point to integer conversion (rounding) */ -static inline opus_int32 silk_float2int( silk_float x ) -{ - return (opus_int32)float2int( x ); -} - -/* floating-point to integer conversion (rounding) */ -static inline void silk_float2short_array( - opus_int16 *out, - const silk_float *in, - opus_int32 length -) -{ - opus_int32 k; - for( k = length - 1; k >= 0; k-- ) { - out[k] = silk_SAT16( (opus_int32)float2int( in[k] ) ); - } -} - -/* integer to floating-point conversion */ -static inline void silk_short2float_array( - silk_float *out, - const opus_int16 *in, - opus_int32 length -) -{ - opus_int32 k; - for( k = length - 1; k >= 0; k-- ) { - out[k] = (silk_float)in[k]; - } -} - -/* using log2() helps the fixed-point conversion */ -static inline silk_float silk_log2( double x ) -{ - return ( silk_float )( 3.32192809488736 * log10( x ) ); -} - -#ifdef __cplusplus -} -#endif - -#endif /* SILK_SIGPROC_FLP_H */ |