FreeCalypso > hg > gsm-codec-lib
view libgsmefr/d_homing.c @ 282:9ee8ad3d4d30
frtest: rm gsmfr-hand-test and gsmfr-max-out utils
These hack programs were never properly documented and were written
only as part of a debug chase, in pursuit of a bug that ultimately
turned out to be in our then-hacky patch to osmo-bts-sysmo,
before beginning of proper patches in Osmocom. These hack programs
need to be dropped from the present sw package because they depend
on old libgsm, and we are eliminating that dependency.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Sun, 14 Apr 2024 05:44:47 +0000 |
| parents | eefef9f6d533 |
| children |
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/************************************************************************** * * File Name: d_homing.c * * Purpose: * This file contains the following functions: * * decoder_homing_frame_test() checks if a frame of input speech * parameters matches the Decoder Homing * Frame pattern. * * decoder_reset() called by reset_dec() to reset all of * the state variables for the decoder * * reset_dec() calls functions to reset the state * variables for the decoder, and for * the receive DTX and Comfort Noise. * **************************************************************************/ #include "gsm_efr.h" #include "typedef.h" #include "namespace.h" #include "cnst.h" #include "dtx.h" #include "codec.h" #include "memops.h" #include "dec_state.h" #include "d_homing.h" #include "q_plsf5_tab.h" #define PRM_NO 57 /*************************************************************************** * * FUNCTION NAME: decoder_homing_frame_test * * PURPOSE: * Checks if a frame of input speech parameters matches the Decoder * Homing Frame pattern, which is: * * parameter decimal value hexidecimal value * --------- ------------- ----------------- * LPC 1 4 0x0004 * LPC 2 47 0x002F * LPC 3 180 0x00B4 * LPC 4 144 0x0090 * LPC 5 62 0x003E * LTP-LAG 1 342 0x0156 * LTP-GAIN 1 11 0x000B * PULSE1_1 0 0x0000 * PULSE1_2 1 0x0001 * PULSE1_3 15 0x000F * PULSE1_4 1 0x0001 * PULSE1_5 13 0x000D * PULSE1_6 0 0x0000 * PULSE1_7 3 0x0003 * PULSE1_8 0 0x0000 * PULSE1_9 3 0x0003 * PULSE1_10 0 0x0000 * FCB-GAIN 1 3 0x0003 * LTP-LAG 2 54 0x0036 * LTP-GAIN 2 1 0x0001 * PULSE2_1 8 0x0008 * PULSE2_2 8 0x0008 * PULSE2_3 5 0x0005 * PULSE2_4 8 0x0008 * PULSE2_5 1 0x0001 * PULSE2_6 0 0x0000 * PULSE2_7 0 0x0000 * PULSE2_8 1 0x0001 * PULSE2_9 1 0x0001 * PULSE2_10 0 0x0000 * FCB-GAIN 2 0 0x0000 * LTP-LAG 3 342 0x0156 * LTP-GAIN 3 0 0x0000 * PULSE3_1 0 0x0000 * PULSE3_2 0 0x0000 * PULSE3_3 0 0x0000 * PULSE3_4 0 0x0000 * PULSE3_5 0 0x0000 * PULSE3_6 0 0x0000 * PULSE3_7 0 0x0000 * PULSE3_8 0 0x0000 * PULSE3_9 0 0x0000 * PULSE3_10 0 0x0000 * FCB-GAIN 3 0 0x0000 * LTP-LAG 4 54 0x0036 * LTP-GAIN 4 11 0x000B * PULSE4_1 0 0x0000 * PULSE4_2 0 0x0000 * PULSE4_3 0 0x0000 * PULSE4_4 0 0x0000 * PULSE4_5 0 0x0000 * PULSE4_6 0 0x0000 * PULSE4_7 0 0x0000 * PULSE4_8 0 0x0000 * PULSE4_9 0 0x0000 * PULSE4_10 0 0x0000 * FCB-GAIN 4 0 0x0000 * * INPUT: * parm[] one frame of speech parameters in parallel format * * nbr_of_params * the number of consecutive parameters in parm[] to match * * OUTPUT: * None * * RETURN: * 0 input frame does not match the Decoder Homing Frame pattern. * 1 input frame matches the Decoder Homing Frame pattern. * **************************************************************************/ Word16 decoder_homing_frame_test (const Word16 parm[], Word16 nbr_of_params) { static const Word16 dhf_mask[PRM_NO] = { 0x0004, /* LPC 1 */ 0x002f, /* LPC 2 */ 0x00b4, /* LPC 3 */ 0x0090, /* LPC 4 */ 0x003e, /* LPC 5 */ 0x0156, /* LTP-LAG 1 */ 0x000b, /* LTP-GAIN 1 */ 0x0000, /* PULSE 1_1 */ 0x0001, /* PULSE 1_2 */ 0x000f, /* PULSE 1_3 */ 0x0001, /* PULSE 1_4 */ 0x000d, /* PULSE 1_5 */ 0x0000, /* PULSE 1_6 */ 0x0003, /* PULSE 1_7 */ 0x0000, /* PULSE 1_8 */ 0x0003, /* PULSE 1_9 */ 0x0000, /* PULSE 1_10 */ 0x0003, /* FCB-GAIN 1 */ 0x0036, /* LTP-LAG 2 */ 0x0001, /* LTP-GAIN 2 */ 0x0008, /* PULSE 2_1 */ 0x0008, /* PULSE 2_2 */ 0x0005, /* PULSE 2_3 */ 0x0008, /* PULSE 2_4 */ 0x0001, /* PULSE 2_5 */ 0x0000, /* PULSE 2_6 */ 0x0000, /* PULSE 2_7 */ 0x0001, /* PULSE 2_8 */ 0x0001, /* PULSE 2_9 */ 0x0000, /* PULSE 2_10 */ 0x0000, /* FCB-GAIN 2 */ 0x0156, /* LTP-LAG 3 */ 0x0000, /* LTP-GAIN 3 */ 0x0000, /* PULSE 3_1 */ 0x0000, /* PULSE 3_2 */ 0x0000, /* PULSE 3_3 */ 0x0000, /* PULSE 3_4 */ 0x0000, /* PULSE 3_5 */ 0x0000, /* PULSE 3_6 */ 0x0000, /* PULSE 3_7 */ 0x0000, /* PULSE 3_8 */ 0x0000, /* PULSE 3_9 */ 0x0000, /* PULSE 3_10 */ 0x0000, /* FCB-GAIN 3 */ 0x0036, /* LTP-LAG 4 */ 0x000b, /* LTP-GAIN 4 */ 0x0000, /* PULSE 4_1 */ 0x0000, /* PULSE 4_2 */ 0x0000, /* PULSE 4_3 */ 0x0000, /* PULSE 4_4 */ 0x0000, /* PULSE 4_5 */ 0x0000, /* PULSE 4_6 */ 0x0000, /* PULSE 4_7 */ 0x0000, /* PULSE 4_8 */ 0x0000, /* PULSE 4_9 */ 0x0000, /* PULSE 4_10 */ 0x0000 /* FCB-GAIN 4 */ }; Word16 i, j; for (i = 0; i < nbr_of_params; i++) { j = parm[i] ^ dhf_mask[i]; if (j) break; } return !j; } /*************************************************************************** * * FUNCTION NAME: decoder_reset * * PURPOSE: * resets all of the state variables for the decoder * * INPUT: * None * * OUTPUT: * None * * RETURN: * None * **************************************************************************/ void decoder_reset (struct EFR_decoder_state *st) { Word16 i; /* reset all the decoder state variables */ /* ------------------------------------- */ /* Variable in decoder.c: */ Set_zero (st->synth_buf, M); /* Variables in dec_12k2.c: */ Init_Decoder_12k2 (st); /* Variable in agc.c: */ st->past_gain = 4096; /* Variables in d_gains.c: */ for (i = 0; i < 5; i++) { st->pbuf[i] = 410; /* Error concealment */ st->gbuf[i] = 1; /* Error concealment */ } st->past_gain_pit = 0; /* Error concealment */ st->prev_gp = 4096; /* Error concealment */ st->past_gain_code = 0; /* Error concealment */ st->prev_gc = 1; /* Error concealment */ st->gcode0_CN = 0; /* CNI */ st->gain_code_old_CN = 0; /* CNI */ st->gain_code_new_CN = 0; /* CNI */ st->gain_code_muting_CN = 0; /* CNI */ for (i = 0; i < 4; i++) { st->past_qua_en[i] = -2381; /* past quantized energies */ } st->pred[0] = 44; /* MA prediction coeff */ st->pred[1] = 37; /* MA prediction coeff */ st->pred[2] = 22; /* MA prediction coeff */ st->pred[3] = 12; /* MA prediction coeff */ /* Variables in d_plsf_5.c: */ for (i = 0; i < M; i++) { st->past_r2_q[i] = 0; /* Past quantized prediction error */ st->past_lsf_q[i] = mean_lsf[i]; /* Past dequantized lsfs */ st->lsf_p_CN[i] = mean_lsf[i]; /* CNI */ st->lsf_new_CN[i] = mean_lsf[i]; /* CNI */ st->lsf_old_CN[i] = mean_lsf[i]; /* CNI */ } /* Variable in dec_lag6.c: */ st->old_T0 = 40; /* Old integer lag */ /* Variable in preemph.c: */ st->mem_pre = 0; /* Filter memory */ /* Variables in pstfilt2.c: */ Init_Post_Filter (st); return; } /*************************************************************************** * * FUNCTION NAME: reset_dec * * PURPOSE: * resets all of the state variables for the decoder, and for the * receive DTX and Comfort Noise. * * INPUT: * None * * OUTPUT: * None * * RETURN: * None * **************************************************************************/ void EFR_decoder_reset (struct EFR_decoder_state *st) { st->reset_flag_old = 1; decoder_reset (st); /* reset all the state variables in the speech decoder*/ reset_rx_dtx (st); /* reset all the receive DTX and CN state variables */ /* Themyscira libgsmefr addition for no-data BFI handling */ st->L_pn_seed_nodata = PN_INITIAL_SEED; return; }