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annotate amrefr/tseq-enc.c @ 585:3c6bf0d26ee7 default tip

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TW-TS-005 reader: fix maximum line length bug TW-TS-005 section 4.1 states: The maximum allowed length of each line is 80 characters, not including the OS-specific newline encoding. The implementation of this line length limit in the TW-TS-005 hex file reader function in the present suite was wrong, such that lines of the full maximum length could not be read. Fix it. Note that this bug affects comment lines too, not just actual RTP payloads. Neither Annex A nor Annex B features an RTP payload format that goes to the maximum of 40 bytes, but if a comment line goes to the maximum allowed length of 80 characters not including the terminating newline, the bug will be triggered, necessitating the present fix.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 25 Feb 2025 07:49:28 +0000
parents 026bdc1f0dda
children
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1 /*
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2 * amrefr-tseq-enc is a test program for our libtwamr-based "alternative EFR"
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3 * encoder: it functions just like gsmefr-etsi-enc, but uses libtwamr as
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4 * the encoder engine instead of libgsmefr. Libgsmefr functions are still
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5 * used for frame packing, but not for actual encoding. Note that there is
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6 * no -d option in this version, and no DTX encoding support: a DTX-capable
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7 * AMR-EFR hybrid is a beast that is currently outside our capabilities.
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8 *
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9 * The byte order is LE by default or BE with -b option. Practical testing
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10 * will always require some manual byte-swap conversion: t??_efr.cod files
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11 * in amr122_efr.zip are shipped in BE, but the corresponding t??.inp files
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12 * in the 06.74 package are LE.
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13 */
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15 #include <stdio.h>
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16 #include <stdint.h>
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17 #include <stdlib.h>
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18 #include <string.h>
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19 #include <strings.h>
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20 #include <unistd.h>
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21 #include "../libgsmefr/gsm_efr.h"
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22 #include "../libtwamr/tw_amr.h"
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24 main(argc, argv)
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25 char **argv;
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26 {
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27 char *infname, *outfname;
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28 FILE *inf, *outf;
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29 struct amr_encoder_state *state;
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30 int16_t pcm[160];
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31 struct amr_param_frame amr_frame;
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32 uint8_t efr_frame[EFR_RTP_FRAME_LEN], bits[250];
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33 int opt, rc, big_endian = 0;
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34 extern int optind;
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35
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36 while ((opt = getopt(argc, argv, "b")) != EOF) {
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37 switch (opt) {
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38 case 'b':
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39 big_endian = 1;
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40 continue;
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41 default:
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42 usage:
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43 fprintf(stderr, "usage: %s [-b] input.inp output.cod\n",
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44 argv[0]);
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45 exit(1);
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46 }
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47 }
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48 if (argc != optind + 2)
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49 goto usage;
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50 infname = argv[optind];
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51 outfname = argv[optind+1];
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52
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53 inf = fopen(infname, "r");
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54 if (!inf) {
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55 perror(infname);
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56 exit(1);
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57 }
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58 outf = fopen(outfname, "w");
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59 if (!outf) {
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60 perror(outfname);
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61 exit(1);
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62 }
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63 state = amr_encoder_create(0, 0);
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64 if (!state) {
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65 perror("amr_encoder_create()");
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66 exit(1);
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67 }
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68 for (;;) {
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69 rc = read_input(inf, pcm, infname, big_endian);
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70 if (!rc)
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71 break;
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72 amr_encode_frame(state, MR122, pcm, &amr_frame);
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73 amr_dhf_subst_efr2(&amr_frame, pcm);
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74 EFR_params2frame(amr_frame.param, efr_frame);
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75 frame2bits(efr_frame, bits);
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76 bits[248] = 1;
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77 bits[249] = 1;
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78 emit_output(outf, bits + 4, 246, big_endian);
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79 }
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80 fclose(outf);
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81 exit(0);
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82 }