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annotate amrefr/decode-r.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 65d20172e92a
children
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1 /*
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2 * amrefr-decode-r is a counterpart to gsmefr-decode-r, implementing
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3 * "alternative EFR" by way of libtwamr. Unlike standard gsmefr-decode-r,
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4 * this version cannot handle SID frames in input: they are not explicitly
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5 * checked for, but an input containing SIDs will not be decoded correctly.
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6 */
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7
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8 #include <stdio.h>
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9 #include <stdint.h>
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10 #include <stdlib.h>
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11 #include "../libgsmefr/gsm_efr.h"
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12 #include "../libtwamr/tw_amr.h"
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13 #include "../libtest/binreader.h"
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14 #include "../libtest/robewrite.h"
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16 main(argc, argv)
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17 char **argv;
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18 {
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19 FILE *binf, *outf;
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20 struct amr_decoder_state *state;
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21 uint8_t frame[BINFILE_MAX_FRAME];
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22 struct amr_param_frame amr_frame;
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23 int16_t pcm[160];
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24 int rc, bfi;
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26 if (argc != 3) {
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27 fprintf(stderr, "usage: %s input.gsmx output.robe\n", argv[0]);
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28 exit(1);
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29 }
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30 binf = fopen(argv[1], "r");
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31 if (!binf) {
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32 perror(argv[1]);
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33 exit(1);
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34 }
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35 outf = fopen(argv[2], "w");
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36 if (!outf) {
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37 perror(argv[2]);
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38 exit(1);
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39 }
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40 state = amr_decoder_create();
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41 if (!state) {
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42 perror("amr_decoder_create()");
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43 exit(1);
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44 }
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45 amr_frame.mode = 0x87;
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46 for (;;) {
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47 rc = binfile_read_frame(binf, frame);
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48 if (rc < 0) {
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49 fprintf(stderr, "error: garbage in %s\n", argv[1]);
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50 exit(1);
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51 }
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52 if (!rc)
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53 break;
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54 if (frame[0] == 0xBF)
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55 bfi = 1;
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56 else if ((frame[0] & 0xF0) == 0xC0)
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57 bfi = 0;
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58 else {
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59 fprintf(stderr,
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60 "error: %s is not in EFR codec format\n",
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61 argv[1]);
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62 exit(1);
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63 }
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64 if (bfi)
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65 amr_frame.type = RX_NO_DATA;
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66 else {
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67 amr_frame.type = RX_SPEECH_GOOD;
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68 EFR_frame2params(frame, amr_frame.param);
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69 }
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70 amr_decode_frame(state, &amr_frame, pcm);
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71 write_pcm_to_robe(outf, pcm);
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72 }
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73 fclose(outf);
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74 exit(0);
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75 }