FreeCalypso > hg > gsm-codec-lib
comparison miscutil/amr2efr.c @ 105:ecfbced76fea
gsm-amr2efr: add -w option to simulate common wrong implementation
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 27 Nov 2022 05:59:10 +0000 |
parents | dd88f9312170 |
children | 41f1ae68d253 |
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104:7f43089e9a7a | 105:ecfbced76fea |
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16 static const char amr_file_hdr[] = "#!AMR\n"; | 16 static const char amr_file_hdr[] = "#!AMR\n"; |
17 | 17 |
18 main(argc, argv) | 18 main(argc, argv) |
19 char **argv; | 19 char **argv; |
20 { | 20 { |
21 char *infname, *outfname; | |
21 FILE *inf, *outf; | 22 FILE *inf, *outf; |
22 int hdrb; | 23 int wrong_flag, hdrb; |
23 uint8_t frm_in[31], frm_out[31]; | 24 uint8_t frm_in[31], frm_out[31]; |
24 unsigned bit_a, bit_n; | 25 unsigned bit_a, bit_n; |
25 | 26 |
26 if (argc != 3) { | 27 if (argc == 3 && argv[1][0] != '-') { |
27 fprintf(stderr, "usage: %s input.amr output.gsmx\n", argv[0]); | 28 wrong_flag = 0; |
29 infname = argv[1]; | |
30 outfname = argv[2]; | |
31 } else if (argc == 4 && !strcmp(argv[1], "-w")) { | |
32 wrong_flag = 1; | |
33 infname = argv[2]; | |
34 outfname = argv[3]; | |
35 } else { | |
36 fprintf(stderr, "usage: %s [-w] input.amr output.gsmx\n", | |
37 argv[0]); | |
28 exit(1); | 38 exit(1); |
29 } | 39 } |
30 inf = fopen(argv[1], "r"); | 40 inf = fopen(infname, "r"); |
31 if (!inf) { | 41 if (!inf) { |
32 perror(argv[1]); | 42 perror(infname); |
33 exit(1); | 43 exit(1); |
34 } | 44 } |
35 if (fread(frm_in, 1, 6, inf) != 6 || bcmp(frm_in, amr_file_hdr, 6)) { | 45 if (fread(frm_in, 1, 6, inf) != 6 || bcmp(frm_in, amr_file_hdr, 6)) { |
36 fprintf(stderr, "error: %s is not in AMR format\n", argv[1]); | 46 fprintf(stderr, "error: %s is not in AMR format\n", infname); |
37 exit(1); | 47 exit(1); |
38 } | 48 } |
39 outf = fopen(argv[2], "w"); | 49 outf = fopen(outfname, "w"); |
40 if (!outf) { | 50 if (!outf) { |
41 perror(argv[2]); | 51 perror(outfname); |
42 exit(1); | 52 exit(1); |
43 } | 53 } |
44 for (;;) { | 54 for (;;) { |
45 hdrb = getc(inf); | 55 hdrb = getc(inf); |
46 if (hdrb < 0) | 56 if (hdrb < 0) |
47 break; | 57 break; |
48 if ((hdrb & 0x78) != 0x38) { | 58 if ((hdrb & 0x78) != 0x38) { |
49 fprintf(stderr, "error: unexpected content in %s\n", | 59 fprintf(stderr, "error: unexpected content in %s\n", |
50 argv[1]); | 60 infname); |
51 exit(1); | 61 exit(1); |
52 } | 62 } |
53 if (fread(frm_in, 1, 31, inf) != 31) { | 63 if (fread(frm_in, 1, 31, inf) != 31) { |
54 fprintf(stderr, "error: short read from %s\n", argv[1]); | 64 fprintf(stderr, "error: short read from %s\n", infname); |
55 exit(1); | 65 exit(1); |
56 } | 66 } |
57 bzero(frm_out, 31); | 67 bzero(frm_out, 31); |
58 frm_out[0] = 0xC0; | 68 frm_out[0] = 0xC0; |
59 for (bit_a = 0; bit_a < 244; bit_a++) { | 69 for (bit_a = 0; bit_a < 244; bit_a++) { |
60 bit_n = amr_122_bit_order[bit_a]; | 70 if (wrong_flag) |
71 bit_n = bit_a; | |
72 else | |
73 bit_n = amr_122_bit_order[bit_a]; | |
61 msb_set_bit(frm_out, 4 + bit_n, | 74 msb_set_bit(frm_out, 4 + bit_n, |
62 msb_get_bit(frm_in, bit_a)); | 75 msb_get_bit(frm_in, bit_a)); |
63 } | 76 } |
64 fwrite(frm_out, 1, 31, outf); | 77 fwrite(frm_out, 1, 31, outf); |
65 } | 78 } |