FreeCalypso > hg > gsm-codec-lib
annotate amrtest/decode-r.c @ 509:b7ddcb178ef6 default tip
add WIP:gsmhr note file
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 17 Aug 2024 23:11:51 +0000 |
parents | e2f824ffd08a |
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1 /* |
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2 * twamr-decode-r is a speech decoder utility going from *.amr input |
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3 * to "robe" (raw BE) output. |
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4 */ |
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5 |
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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 <string.h> |
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10 #include <strings.h> |
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11 #include "../libtwamr/tw_amr.h" |
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12 #include "../libtest/robewrite.h" |
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13 |
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14 main(argc, argv) |
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15 char **argv; |
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16 { |
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17 FILE *inf, *outf; |
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18 uint8_t frm_in[AMR_IETF_MAX_PL]; |
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19 struct amr_decoder_state *state; |
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20 struct amr_param_frame frame; |
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21 int16_t pcm[160]; |
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22 int rc; |
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23 |
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24 if (argc != 3) { |
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25 fprintf(stderr, "usage: %s input.amr output.robe\n", argv[0]); |
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26 exit(1); |
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27 } |
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28 inf = fopen(argv[1], "r"); |
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29 if (!inf) { |
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30 perror(argv[1]); |
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31 exit(1); |
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32 } |
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33 if (fread(frm_in, 1, AMR_IETF_HDR_LEN, inf) != AMR_IETF_HDR_LEN || |
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34 bcmp(frm_in, amr_file_header_magic, AMR_IETF_HDR_LEN)) { |
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35 fprintf(stderr, "error: %s is not in IETF AMR format\n", |
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36 argv[1]); |
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37 exit(1); |
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38 } |
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39 outf = fopen(argv[2], "w"); |
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40 if (!outf) { |
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41 perror(argv[2]); |
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42 exit(1); |
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43 } |
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44 state = amr_decoder_create(); |
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45 if (!state) { |
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46 perror("amr_decoder_create()"); |
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47 exit(1); |
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48 } |
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49 for (;;) { |
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50 rc = getc(inf); |
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51 if (rc < 0) |
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52 break; |
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53 frm_in[0] = rc; |
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54 rc = amr_ietf_grok_first_octet(frm_in[0]); |
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55 if (rc < 0) { |
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56 inv: fprintf(stderr, "error: %s contains invalid AMR data\n", |
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57 argv[1]); |
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58 exit(1); |
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59 } |
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60 if (rc && fread(frm_in+1, 1, rc, inf) != rc) |
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61 goto inv; |
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62 amr_frame_from_ietf(frm_in, &frame); |
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63 amr_decode_frame(state, &frame, pcm); |
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64 write_pcm_to_robe(outf, pcm); |
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65 } |
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66 fclose(outf); |
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67 exit(0); |
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68 } |