libgsmhr1 RxFE: store CN R0+LPC separately from speech In the original GSM 06.06 code the ECU for speech mode is entirely separate from the CN generator, maintaining separate state. (The main intertie between them is the speech vs CN state variable, distinguishing between speech and CN BFIs, in addition to the CN-specific function of distinguishing between initial and update SIDs.) In the present RxFE implementation I initially thought that we could use the same saved_frame buffer for both ECU and CN, overwriting just the first 4 params (R0 and LPC) when a valid SID comes in. However, I now realize it was a bad idea: the original code has a corner case (long sequence of speech-mode BFIs to put the ECU in state 6, then SID and CN-mode BFIs, then a good speech frame) that would be broken by that buffer reuse approach. We could eliminate this corner case by resetting the ECU state when passing through a CN insertion period, but doing so would needlessly increase the behavioral diffs between GSM 06.06 and our version. Solution: use a separate CN-specific buffer for CN R0+LPC parameters, and match the behavior of GSM 06.06 code in this regard.

/*
 * In ETSI EFR code there was only q_plsf_5.tab that was problematically
 * multi-included in many source files; in the AMR version there is also
 * q_plsf_3.tab with a similar situation.  Handle it similarly.
 */

#ifndef	q_plsf3_tab_h
#define	q_plsf3_tab_h

#include "typedef.h"

#define PAST_RQ_INIT_SIZE 8

extern const Word16 past_rq_init[80];
extern const Word16 mean_lsf3[10];
extern const Word16 pred_fac[10];

#define DICO31_SIZE  256
#define DICO32_SIZE  512
#define DICO33_SIZE  512

extern const Word16 dico1_lsf3[];
extern const Word16 dico2_lsf3[];
extern const Word16 dico3_lsf3[];

#define MR515_3_SIZE  128

extern const Word16 mr515_3_lsf[];

#define MR795_1_SIZE  512

extern const Word16 mr795_1_lsf[];

#endif