FreeCalypso > hg > gsm-codec-lib
annotate amrefr/decode-r.c @ 465:026bdc1f0dda
amrefr-tseq-enc: use the new DHF xform that matches T-Mobile
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 12 May 2024 21:43:35 +0000 |
parents | 65d20172e92a |
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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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15 |
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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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25 |
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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 } |