gsm-codec-lib: libgsmefr/cod

annotate libgsmefr/cod_12k2.c @ 176:9fb22fa4d373

doc/RTP-analysis: document rtp-g711-extr

author	Mychaela Falconia <falcon@freecalypso.org>
date	Tue, 27 Dec 2022 01:29:14 +0000
parents	d9ad0f5121e8
children

rev	line source
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	1 /***************************************************************************
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	2 *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	3 * FILE NAME: cod_12k2.c
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	4 *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	5 * FUNCTIONS DEFINED IN THIS FILE:
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	6 * Coder_12k2 and Init_Coder_12k2
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	7 *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	8 *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	9 * Init_Coder_12k2(void):
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	10 * Initialization of variables for the coder section.
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	11 *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	12 * Coder_12k2(Word16 ana[], Word16 synth[]):
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	13 * Speech encoder routine operating on a frame basis.
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	14 *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	15
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	16 ***************************************************************************/
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	17
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	18 #include "gsm_efr.h"
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	19 #include "typedef.h"
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	20 #include "namespace.h"
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	21 #include "basic_op.h"
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	22 #include "sig_proc.h"
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	23 #include "memops.h"
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	24 #include "no_count.h"
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	25 #include "codec.h"
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	26 #include "cnst.h"
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	27 #include "enc_state.h"
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	28
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	29 #include "window2.tab"
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	30
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	31 #include "vad.h"
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	32 #include "dtx.h"
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	33
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	34 /-----------------------------------------------------------
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	35 * Coder constant parameters (defined in "cnst.h") *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	36 -----------------------------------------------------------
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	37 * L_WINDOW : LPC analysis window size *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	38 * L_FRAME : Frame size *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	39 * L_FRAME_BY2 : Half the frame size *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	40 * L_SUBFR : Sub-frame size *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	41 * M : LPC order *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	42 * MP1 : LPC order+1 *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	43 * L_TOTAL : Total size of speech buffer *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	44 * PIT_MIN : Minimum pitch lag *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	45 * PIT_MAX : Maximum pitch lag *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	46 * L_INTERPOL : Length of filter for interpolation *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	47 -----------------------------------------------------------/
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	48
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	49 /* Spectral expansion factors */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	50
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	51 static const Word16 F_gamma1[M] =
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	52 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	53 29491, 26542, 23888, 21499, 19349,
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	54 17414, 15672, 14105, 12694, 11425
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	55 };
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	56 static const Word16 F_gamma2[M] =
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	57 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	58 19661, 11797, 7078, 4247, 2548,
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	59 1529, 917, 550, 330, 198
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	60 };
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	61
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	62 /***************************************************************************
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	63 * FUNCTION: Init_Coder_12k2
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	64 *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	65 * PURPOSE: Initialization of variables for the coder section.
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	66 *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	67 * DESCRIPTION:
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	68 * - initilize pointers to speech buffer
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	69 * - initialize static pointers
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	70 * - set static vectors to zero
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	71 *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	72 ***************************************************************************/
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	73
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	74 void Init_Coder_12k2 (struct EFR_encoder_state *st)
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	75 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	76 /* Static vectors to zero */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	77
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	78 Set_zero (st->old_speech, L_TOTAL);
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	79 Set_zero (st->old_exc, PIT_MAX + L_INTERPOL);
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	80 Set_zero (st->old_wsp, PIT_MAX);
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	81 Set_zero (st->mem_syn, M);
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	82 Set_zero (st->mem_w, M);
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	83 Set_zero (st->mem_w0, M);
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	84 Set_zero (st->mem_err, M);
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	85 Set_zero (st->ai_zero + MP1, L_SUBFR);
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	86 Set_zero (st->hvec, L_SUBFR); /* set to zero "h1[-L_SUBFR..-1]" */
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	87
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	88 /* Initialize lsp_old [] */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	89
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	90 st->lsp_old[0] = 30000;
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	91 st->lsp_old[1] = 26000;
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	92 st->lsp_old[2] = 21000;
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	93 st->lsp_old[3] = 15000;
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	94 st->lsp_old[4] = 8000;
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	95 st->lsp_old[5] = 0;
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	96 st->lsp_old[6] = -8000;
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	97 st->lsp_old[7] = -15000;
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	98 st->lsp_old[8] = -21000;
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	99 st->lsp_old[9] = -26000;
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	100
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	101 /* Initialize lsp_old_q[] */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	102
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	103 Copy (st->lsp_old, st->lsp_old_q, M);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	104
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	105 return;
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	106 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	107
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	108 /***************************************************************************
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	109 * FUNCTION: Coder_12k2
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	110 *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	111 * PURPOSE: Principle encoder routine.
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	112 *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	113 * DESCRIPTION: This function is called every 20 ms speech frame,
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	114 * operating on the newly read 160 speech samples. It performs the
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	115 * principle encoding functions to produce the set of encoded parameters
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	116 * which include the LSP, adaptive codebook, and fixed codebook
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	117 * quantization indices (addresses and gains).
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	118 *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	119 * INPUTS:
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	120 * No input arguments are passed to this function. However, before
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	121 * calling this function, 160 new speech data samples should be copied to
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	122 * the vector new_speech[]. This is a global pointer which is declared in
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	123 * this file (it points to the end of speech buffer minus 160).
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	124 *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	125 * OUTPUTS:
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	126 *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	127 * ana[]: vector of analysis parameters.
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	128 * synth[]: Local synthesis speech (for debugging purposes)
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	129 *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	130 ***************************************************************************/
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	131
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	132 void Coder_12k2 (
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	133 struct EFR_encoder_state *st,
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	134 Word16 ana[], /* output : Analysis parameters */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	135 Word16 synth[] /* output : Local synthesis */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	136 )
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	137 {
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	138 /* handy pointers that were static vars in the original code */
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	139 Word16 *speech = st->old_speech + L_TOTAL - L_FRAME;
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	140 Word16 *p_window = st->old_speech + L_TOTAL - L_WINDOW;
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	141 Word16 *wsp = st->old_wsp + PIT_MAX;
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	142 Word16 *exc = st->old_exc + PIT_MAX + L_INTERPOL;
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	143 Word16 *zero = st->ai_zero + MP1;
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	144 Word16 *h1 = st->hvec + L_SUBFR;
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	145 Word16 *error = st->mem_err + M;
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	146
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	147 /* LPC coefficients */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	148
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	149 Word16 r_l[MP1], r_h[MP1]; /* Autocorrelations lo and hi */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	150 Word16 A_t[(MP1) * 4]; /* A(z) unquantized for the 4 subframes */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	151 Word16 Aq_t[(MP1) * 4]; /* A(z) quantized for the 4 subframes */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	152 Word16 Ap1[MP1]; /* A(z) with spectral expansion */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	153 Word16 Ap2[MP1]; /* A(z) with spectral expansion */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	154 Word16 A, Aq; /* Pointer on A_t and Aq_t */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	155 Word16 lsp_new[M], lsp_new_q[M];/* LSPs at 4th subframe */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	156 Word16 lsp_mid[M], lsp_mid_q[M];/* LSPs at 2nd subframe */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	157
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	158 /* Other vectors */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	159
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	160 Word16 xn[L_SUBFR]; /* Target vector for pitch search */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	161 Word16 xn2[L_SUBFR]; /* Target vector for codebook search */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	162 Word16 res2[L_SUBFR]; /* Long term prediction residual */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	163 Word16 code[L_SUBFR]; /* Fixed codebook excitation */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	164 Word16 y1[L_SUBFR]; /* Filtered adaptive excitation */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	165 Word16 y2[L_SUBFR]; /* Filtered fixed codebook excitation */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	166
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	167 /* Scalars */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	168
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	169 Word16 i, j, k, i_subfr;
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	170 Word16 T_op, T0, T0_min, T0_max, T0_frac;
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	171 Word16 gain_pit, gain_code, pit_flag, pit_sharp;
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	172 Word16 temp;
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	173 Word32 L_temp;
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	174
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	175 Word16 scal_acf, VAD_flag, lags[2], rc[4];
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	176
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	177 /----------------------------------------------------------------------
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	178 * - Perform LPC analysis: (twice per frame) *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	179 * * autocorrelation + lag windowing *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	180 * * Levinson-Durbin algorithm to find a[] *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	181 * * convert a[] to lsp[] *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	182 * * quantize and code the LSPs *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	183 * * find the interpolated LSPs and convert to a[] for all *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	184 * subframes (both quantized and unquantized) *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	185 ----------------------------------------------------------------------/
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	186
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	187 /* LP analysis centered at 2nd subframe */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	188
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	189 scal_acf = Autocorr (p_window, M, r_h, r_l, window_160_80);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	190 /* Autocorrelations */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	191
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	192 Lag_window (M, r_h, r_l); /* Lag windowing */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	193
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	194 Levinson (st, r_h, r_l, &A_t[MP1], rc); /* Levinson-Durbin */
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	195
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	196 Az_lsp (&A_t[MP1], lsp_mid, st->lsp_old); /* From A(z) to lsp */
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	197
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	198 /* LP analysis centered at 4th subframe */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	199
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	200 /* Autocorrelations */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	201 scal_acf = Autocorr (p_window, M, r_h, r_l, window_232_8);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	202
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	203 Lag_window (M, r_h, r_l); /* Lag windowing */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	204
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	205 Levinson (st, r_h, r_l, &A_t[MP1 * 3], rc); /* Levinson-Durbin */
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	206
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	207 Az_lsp (&A_t[MP1 * 3], lsp_new, lsp_mid); /* From A(z) to lsp */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	208
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	209 if (st->dtx_mode)
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	210 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	211 /* DTX enabled, make voice activity decision */
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	212 VAD_flag = vad_computation (st, r_h, r_l, scal_acf, rc, st->ptch);
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	213 tx_dtx (st, VAD_flag); /* TX DTX handler */
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	214 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	215 else
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	216 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	217 /* DTX disabled, active speech in every frame */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	218 VAD_flag = 1;
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	219 st->txdtx_ctrl = TX_VAD_FLAG \| TX_SP_FLAG;
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	220 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	221
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	222 /* LSP quantization (lsp_mid[] and lsp_new[] jointly quantized) */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	223
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	224 Q_plsf_5 (st, lsp_mid, lsp_new, lsp_mid_q, lsp_new_q, ana, st->txdtx_ctrl);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	225
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	226 ana += 5;
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	227
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	228 /--------------------------------------------------------------------
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	229 * Find interpolated LPC parameters in all subframes (both quantized *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	230 * and unquantized). *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	231 * The interpolated parameters are in array A_t[] of size (M+1)4
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	232 * and the quantized interpolated parameters are in array Aq_t[] *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	233 --------------------------------------------------------------------/
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	234
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	235 Int_lpc2 (st->lsp_old, lsp_mid, lsp_new, A_t);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	236
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	237 if ((st->txdtx_ctrl & TX_SP_FLAG) != 0)
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	238 {
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	239 Int_lpc (st->lsp_old_q, lsp_mid_q, lsp_new_q, Aq_t);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	240
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	241 /* update the LSPs for the next frame */
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	242 Copy (lsp_new, st->lsp_old, M);
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	243 Copy (lsp_new_q, st->lsp_old_q, M);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	244 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	245 else
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	246 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	247 /* Use unquantized LPC parameters in case of no speech activity */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	248 for (i = 0; i < MP1; i++)
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	249 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	250 Aq_t[i] = A_t[i]; move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	251 Aq_t[i + MP1] = A_t[i + MP1]; move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	252 Aq_t[i + MP1 * 2] = A_t[i + MP1 * 2]; move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	253 Aq_t[i + MP1 * 3] = A_t[i + MP1 * 3]; move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	254 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	255
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	256 /* update the LSPs for the next frame */
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	257 Copy (lsp_new, st->lsp_old, M);
116 d9ad0f5121e8 libgsmefr/cod_12k2.c: bug in earlier Copy optimization Mychaela Falconia <falcon@freecalypso.org> parents: 58 diff changeset	258 Copy (lsp_new, st->lsp_old_q, M);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	259 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	260
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	261 /----------------------------------------------------------------------
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	262 * - Find the weighted input speech wsp[] for the whole speech frame *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	263 * - Find the open-loop pitch delay for first 2 subframes *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	264 * - Set the range for searching closed-loop pitch in 1st subframe *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	265 * - Find the open-loop pitch delay for last 2 subframes *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	266 ----------------------------------------------------------------------/
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	267
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	268 A = A_t; move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	269 for (i = 0; i < L_FRAME; i += L_SUBFR)
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	270 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	271 Weight_Ai (A, F_gamma1, Ap1);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	272
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	273 Weight_Ai (A, F_gamma2, Ap2);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	274
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	275 Residu (Ap1, &speech[i], &wsp[i], L_SUBFR);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	276
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	277 Syn_filt (Ap2, &wsp[i], &wsp[i], L_SUBFR, st->mem_w, 1);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	278
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	279 A += MP1; move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	280 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	281
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	282 /* Find open loop pitch lag for first two subframes */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	283
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	284 T_op = Pitch_ol (wsp, PIT_MIN, PIT_MAX, L_FRAME_BY2); move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	285
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	286 lags[0] = T_op; move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	287
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	288 if ((st->txdtx_ctrl & TX_SP_FLAG) != 0)
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	289 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	290 /* Range for closed loop pitch search in 1st subframe */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	291
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	292 T0_min = sub (T_op, 3);
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	293 if (T0_min < PIT_MIN)
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	294 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	295 T0_min = PIT_MIN; move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	296 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	297 T0_max = add (T0_min, 6);
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	298 if (T0_max > PIT_MAX)
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	299 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	300 T0_max = PIT_MAX; move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	301 T0_min = sub (T0_max, 6);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	302 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	303 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	304 /* Find open loop pitch lag for last two subframes */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	305
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	306 T_op = Pitch_ol (&wsp[L_FRAME_BY2], PIT_MIN, PIT_MAX, L_FRAME_BY2);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	307
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	308 if (st->dtx_mode)
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	309 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	310 lags[1] = T_op; move16 ();
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	311 periodicity_update (st, lags);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	312 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	313 /----------------------------------------------------------------------
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	314 * Loop for every subframe in the analysis frame *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	315 ----------------------------------------------------------------------
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	316 * To find the pitch and innovation parameters. The subframe size is *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	317 * L_SUBFR and the loop is repeated L_FRAME/L_SUBFR times. *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	318 * - find the weighted LPC coefficients *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	319 * - find the LPC residual signal res[] *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	320 * - compute the target signal for pitch search *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	321 * - compute impulse response of weighted synthesis filter (h1[]) *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	322 * - find the closed-loop pitch parameters *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	323 * - encode the pitch delay *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	324 * - update the impulse response h1[] by including pitch *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	325 * - find target vector for codebook search *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	326 * - codebook search *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	327 * - encode codebook address *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	328 * - VQ of pitch and codebook gains *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	329 * - find synthesis speech *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	330 * - update states of weighting filter *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	331 ----------------------------------------------------------------------/
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	332
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	333 /* pointer to interpolated LPC parameters */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	334 A = A_t; move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	335 /* pointer to interpolated quantized LPC parameters */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	336 Aq = Aq_t; move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	337
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	338 for (i_subfr = 0; i_subfr < L_FRAME; i_subfr += L_SUBFR)
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	339 {
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	340 if ((st->txdtx_ctrl & TX_SP_FLAG) != 0)
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	341 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	342
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	343 /---------------------------------------------------------------
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	344 * Find the weighted LPC coefficients for the weighting filter. *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	345 ---------------------------------------------------------------/
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	346
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	347 Weight_Ai (A, F_gamma1, Ap1);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	348
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	349 Weight_Ai (A, F_gamma2, Ap2);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	350
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	351 /---------------------------------------------------------------
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	352 * Compute impulse response, h1[], of weighted synthesis filter *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	353 ---------------------------------------------------------------/
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	354
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	355 Copy (Ap1, st->ai_zero, M+1);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	356
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	357 Syn_filt (Aq, st->ai_zero, h1, L_SUBFR, zero, 0);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	358
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	359 Syn_filt (Ap2, h1, h1, L_SUBFR, zero, 0);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	360
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	361 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	362 /---------------------------------------------------------------
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	363 * Find the target vector for pitch search: *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	364 ---------------------------------------------------------------/
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	365
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	366 Residu (Aq, &speech[i_subfr], res2, L_SUBFR); /* LPC residual */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	367
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	368 if ((st->txdtx_ctrl & TX_SP_FLAG) == 0)
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	369 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	370 /* Compute comfort noise excitation gain based on
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	371 LP residual energy */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	372
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	373 st->CN_excitation_gain = compute_CN_excitation_gain (res2);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	374 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	375 else
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	376 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	377 Copy (res2, &exc[i_subfr], L_SUBFR);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	378
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	379 Syn_filt (Aq, &exc[i_subfr], error, L_SUBFR, st->mem_err, 0);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	380
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	381 Residu (Ap1, error, xn, L_SUBFR);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	382
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	383 /* target signal xn[] */
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	384 Syn_filt (Ap2, xn, xn, L_SUBFR, st->mem_w0, 0);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	385
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	386 /--------------------------------------------------------------
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	387 * Closed-loop fractional pitch search *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	388 --------------------------------------------------------------/
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	389
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	390 /* flag for first and 3th subframe */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	391 pit_flag = i_subfr; move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	392 /* set t0_min and t0_max for 3th subf.*/
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	393 if (i_subfr == L_FRAME_BY2)
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	394 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	395 T0_min = sub (T_op, 3);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	396
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	397 if (T0_min < PIT_MIN)
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	398 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	399 T0_min = PIT_MIN; move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	400 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	401 T0_max = add (T0_min, 6);
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	402 if (T0_max > PIT_MAX)
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	403 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	404 T0_max = PIT_MAX; move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	405 T0_min = sub (T0_max, 6);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	406 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	407 pit_flag = 0; move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	408 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	409
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	410 T0 = Pitch_fr6 (&exc[i_subfr], xn, h1, L_SUBFR, T0_min, T0_max,
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	411 pit_flag, &T0_frac); move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	412
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	413 *ana = Enc_lag6 (T0, &T0_frac, &T0_min, &T0_max, PIT_MIN,
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	414 PIT_MAX, pit_flag);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	415 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	416 ana++;
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	417 /* Incrementation of ana is done here to work also
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	418 when no speech activity is present */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	419
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	420 if ((st->txdtx_ctrl & TX_SP_FLAG) != 0)
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	421 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	422
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	423 /---------------------------------------------------------------
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	424 * - find unity gain pitch excitation (adaptive codebook entry) *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	425 * with fractional interpolation. *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	426 * - find filtered pitch exc. y1[]=exc[] convolved with h1[] *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	427 * - compute pitch gain and limit between 0 and 1.2 *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	428 * - update target vector for codebook search *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	429 * - find LTP residual. *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	430 ---------------------------------------------------------------/
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	431
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	432 Pred_lt_6 (&exc[i_subfr], T0, T0_frac, L_SUBFR);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	433
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	434 Convolve (&exc[i_subfr], h1, y1, L_SUBFR);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	435
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	436 gain_pit = G_pitch (xn, y1, L_SUBFR); move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	437
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	438 *ana = q_gain_pitch (&gain_pit); move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	439
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	440 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	441 else
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	442 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	443 gain_pit = 0; move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	444 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	445
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	446 ana++; /* Incrementation of ana is done here to work
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	447 also when no speech activity is present */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	448
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	449 if ((st->txdtx_ctrl & TX_SP_FLAG) != 0)
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	450 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	451 /* xn2[i] = xn[i] - y1[i] * gain_pit */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	452 /* res2[i] -= exc[i+i_subfr] * gain_pit */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	453
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	454 for (i = 0; i < L_SUBFR; i++)
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	455 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	456 L_temp = L_mult (y1[i], gain_pit);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	457 L_temp = L_shl (L_temp, 3);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	458 xn2[i] = sub (xn[i], extract_h (L_temp)); move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	459
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	460 L_temp = L_mult (exc[i + i_subfr], gain_pit);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	461 L_temp = L_shl (L_temp, 3);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	462 res2[i] = sub (res2[i], extract_h (L_temp)); move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	463 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	464
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	465 /-------------------------------------------------------------
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	466 * - include pitch contribution into impulse resp. h1[] *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	467 -------------------------------------------------------------/
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	468
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	469 /* pit_sharp = gain_pit; */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	470 /* if (pit_sharp > 1.0) pit_sharp = 1.0; */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	471
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	472 pit_sharp = shl (gain_pit, 3);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	473
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	474 for (i = T0; i < L_SUBFR; i++)
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	475 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	476 temp = mult (h1[i - T0], pit_sharp);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	477 h1[i] = add (h1[i], temp); move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	478 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	479
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	480 /--------------------------------------------------------------
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	481 * - Innovative codebook search (find index and gain) *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	482 --------------------------------------------------------------/
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	483
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	484 code_10i40_35bits (xn2, res2, h1, code, y2, ana);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	485 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	486 else
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	487 {
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	488 build_CN_code (code, &st->L_pn_seed_tx);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	489 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	490 ana += 10; move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	491
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	492 if ((st->txdtx_ctrl & TX_SP_FLAG) != 0)
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	493 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	494
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	495 /-------------------------------------------------------
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	496 * - Add the pitch contribution to code[]. *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	497 -------------------------------------------------------/
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	498
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	499 for (i = T0; i < L_SUBFR; i++)
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	500 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	501 temp = mult (code[i - T0], pit_sharp);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	502 code[i] = add (code[i], temp); move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	503 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	504
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	505 /------------------------------------------------------
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	506 * - Quantization of fixed codebook gain. *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	507 ------------------------------------------------------/
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	508
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	509 gain_code = G_code (xn2, y2); move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	510 }
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	511 *ana++ = q_gain_code (st, code, L_SUBFR, &gain_code, st->txdtx_ctrl,
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	512 i_subfr);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	513
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	514 /------------------------------------------------------
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	515 * - Find the total excitation *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	516 * - find synthesis speech corresponding to exc[] *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	517 * - update filter memories for finding the target *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	518 * vector in the next subframe *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	519 * (update mem_err[] and mem_w0[]) *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	520 ------------------------------------------------------/
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	521
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	522 for (i = 0; i < L_SUBFR; i++)
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	523 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	524 /* exc[i] = gain_pitexc[i] + gain_codecode[i]; */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	525
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	526 L_temp = L_mult (exc[i + i_subfr], gain_pit);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	527 L_temp = L_mac (L_temp, code[i], gain_code);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	528 L_temp = L_shl (L_temp, 3);
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	529 exc[i + i_subfr] = round (L_temp); move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	530 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	531
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	532 Syn_filt (Aq, &exc[i_subfr], &synth[i_subfr], L_SUBFR, st->mem_syn, 1);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	533
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	534 if ((st->txdtx_ctrl & TX_SP_FLAG) != 0)
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	535 {
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	536
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	537 for (i = L_SUBFR - M, j = 0; i < L_SUBFR; i++, j++)
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	538 {
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	539 st->mem_err[j] = sub (speech[i_subfr + i], synth[i_subfr + i]);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	540 temp = extract_h (L_shl (L_mult (y1[i], gain_pit), 3));
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	541 k = extract_h (L_shl (L_mult (y2[i], gain_code), 5));
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	542 st->mem_w0[j] = sub (xn[i], add (temp, k));
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	543 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	544 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	545 else
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	546 {
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	547 Set_zero (st->mem_err, M);
d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	548 Set_zero (st->mem_w0, M);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	549 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	550
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	551 /* interpolated LPC parameters for next subframe */
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	552 A += MP1; move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	553 Aq += MP1; move16 ();
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	554 }
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	555
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	556 /--------------------------------------------------
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	557 * Update signal for next frame. *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	558 * -> shift to the left by L_FRAME: *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	559 * speech[], wsp[] and exc[] *
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	560 --------------------------------------------------/
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	561
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	562 Copy (&st->old_speech[L_FRAME], &st->old_speech[0], L_TOTAL - L_FRAME);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	563
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	564 Copy (&st->old_wsp[L_FRAME], &st->old_wsp[0], PIT_MAX);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	565
58 d285877fc4cc libgsmefr: cod_12k2.c compiles Mychaela Falconia <falcon@freecalypso.org> parents: 53 diff changeset	566 Copy (&st->old_exc[L_FRAME], &st->old_exc[0], PIT_MAX + L_INTERPOL);
53 49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	567
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	568 return;
49dd1ac8e75b libgsmefr: import most .c files from ETSI source Mychaela Falconia <falcon@freecalypso.org>* parents: diff changeset	569 }

FreeCalypso > hg > gsm-codec-lib

annotate libgsmefr/cod_12k2.c @ 176:9fb22fa4d373