FreeCalypso > hg > gsm-codec-lib
view libgsmefr/d_homing.c @ 216:9d59df9b0e4e
amrconv: new program amr-ietf2cod
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 21 Apr 2023 21:28:02 +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; }