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annotate pcmu2efr/gen-amrefr.c @ 34:307fe06fabec

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dhf: generate EFR hex DHF in C form
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 14 May 2024 03:36:31 +0000
parents f4420403219a
children
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1 /*
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2 * The code in this module takes linear_input_array[] from gen160.c
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3 * and generates EFR-format frames by way of libtwamr encoder.
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4 */
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6 #include <stdio.h>
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7 #include <stdint.h>
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8 #include <stdlib.h>
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9 #include <gsm_efr.h>
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10 #include <tw_amr.h>
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12 extern uint16_t linear_input_array[480];
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14 uint8_t amr_efr[160][31];
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16 void
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17 generate_amr_efr(void)
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18 {
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19 struct amr_encoder_state *st;
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20 struct amr_param_frame amr_frame;
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21 unsigned m;
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23 st = amr_encoder_create(0, 0);
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24 if (!st) {
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25 fprintf(stderr, "error: amr_encoder_create() failed\n");
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26 exit(1);
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27 }
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28 for (m = 0; m < 160; m++) {
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29 amr_encoder_reset(st, 0, 0);
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30 amr_encode_frame(st, MR122,
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31 (const int16_t *) linear_input_array + 160 - m,
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32 &amr_frame);
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33 EFR_params2frame(amr_frame.param, amr_efr[m]);
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34 }
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35 free(st);
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36 }