dsp_sub.h

It is source code for Melp2.4kps vocoder using dsp tms320vc55x of ti

/*************************************************************************
*
* The following code was hand optimized for the Texas Instuments
* TMS320C5x DSP by DSPCon, Inc.  For information, please contact DSPCon
* at:
* 
*                       DSPCon, Inc.
*                       380 Foothill Road
*                       Bridgewater, New Jersey 08807
*                       [phone]
*                       [e-mail]
*                       www.dspcon.com
*
*************************************************************************/


/*

  dsp_sub.h: include file

*/

#ifndef _dsp_sub_h
#define _dsp_sub_h_

/* External function definitions */
void envelope(Shortword input[], Shortword prev_in, Shortword output[],
	      Shortword npts);
void fill(Shortword output[], Shortword fillval, Shortword npts);
void interp_array(Shortword prev[],Shortword curr[],Shortword out[],
		  Shortword ifact,Shortword size);
Shortword median(Shortword input[], Shortword npts);
void pack_code(Shortword code,UShortword **p_ch_beg,Shortword *p_ch_bit,
	       Shortword numbits,Shortword wsize);
Shortword peakiness(Shortword input[], Shortword npts);
void quant_u(Shortword *p_data, Shortword *p_index, Shortword qmin,
	     Shortword qmax, Shortword nlev, Shortword nlev_q,
	     Shortword double_flag, Shortword scale);
void quant_u_dec(Shortword index, Shortword *p_data, Shortword qmin,
		 Shortword qmax, Shortword nlev_q, Shortword scale);
void rand_num(Shortword output[], Shortword amplitude, Shortword npts);
Shortword unpack_code(UShortword **p_ch_beg, Shortword *p_ch_bit,
		      Shortword *p_code, Shortword numbits, Shortword wsize,
		      UShortword erase_mask);
void window(Shortword input[], Shortword win_cof[],
	    Shortword output[], Shortword npts);
void window_Q(Shortword input[], Shortword win_cof[],
	      Shortword output[], Shortword npts);

void zerflt(Shortword input[], Shortword coeff[], Shortword output[],
	    Shortword order, Shortword npts);

void zerflt_Q(Shortword input[], Shortword coeff[], Shortword output[],
	      Shortword order, Shortword npts, Shortword Q_coeff);

void iir_2nd_d(Shortword input[],Shortword den[],Shortword num[],
	       Shortword output[],Shortword delin[],Shortword delout_hi[],
	       Shortword delout_lo[],Shortword npts);
void iir_2nd_s(Shortword input[],Shortword den[],Shortword num[],
	       Shortword output[],Shortword delin[],Shortword delout[],
	       Shortword npts);

#endif