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comparison efrtest/etsi-dec.c @ 145:8ed838709897

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efrtest: ETSI bit reading factored out of gsmefr-etsi-dec
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 14 Dec 2022 08:02:00 +0000
parents e5ee684c6d29
children da17c7f02c6c
comparison
equal deleted inserted replaced
144:30c7bc064218 145:8ed838709897
12 #include <stdint.h> 12 #include <stdint.h>
13 #include <stdlib.h> 13 #include <stdlib.h>
14 #include <string.h> 14 #include <string.h>
15 #include <strings.h> 15 #include <strings.h>
16 #include "../libgsmefr/gsm_efr.h" 16 #include "../libgsmefr/gsm_efr.h"
17 17 #include "etsi.h"
18 #define ETSI_DEC_NWORDS 247
19
20 static int
21 read_input(inf, bitvec, filename_for_errs)
22 FILE *inf;
23 uint8_t *bitvec;
24 char *filename_for_errs;
25 {
26 uint8_t file_bytes[ETSI_DEC_NWORDS * 2], *sp;
27 int cc;
28 unsigned n;
29
30 cc = fread(file_bytes, 2, ETSI_DEC_NWORDS, inf);
31 if (cc == 0)
32 return 0;
33 if (cc != ETSI_DEC_NWORDS) {
34 fprintf(stderr, "error: short read from %s\n",
35 filename_for_errs);
36 exit(1);
37 }
38 sp = file_bytes;
39 for (n = 0; n < ETSI_DEC_NWORDS; n++) {
40 if (sp[1]) {
41 fprintf(stderr,
42 "error in %s: non-zero in what should be LE upper byte\n",
43 filename_for_errs);
44 exit(1);
45 }
46 bitvec[n] = sp[0];
47 sp += 2;
48 }
49 return 1;
50 }
51
52 static void
53 bits2frame(input_bits, frame, filename_for_errs, frame_no)
54 uint8_t *input_bits, *frame;
55 char *filename_for_errs;
56 unsigned frame_no;
57 {
58 uint8_t bits[248], *sp, *dp;
59 unsigned nb, byte, mask;
60
61 bits[0] = 1;
62 bits[1] = 1;
63 bits[2] = 0;
64 bits[3] = 0;
65 bcopy(input_bits, bits + 4, 244);
66 sp = bits;
67 dp = frame;
68 for (nb = 0; nb < EFR_RTP_FRAME_LEN; nb++) {
69 byte = 0;
70 for (mask = 0x80; mask; mask >>= 1) {
71 if (*sp > 1) {
72 fprintf(stderr,
73 "error in %s frame #%u: data bit > 1\n",
74 filename_for_errs, frame_no);
75 exit(1);
76 }
77 if (*sp)
78 byte |= mask;
79 sp++;
80 }
81 *dp++ = byte;
82 }
83 }
84 18
85 static void 19 static void
86 write_pcm_le(outf, pcm) 20 write_pcm_le(outf, pcm)
87 FILE *outf; 21 FILE *outf;
88 int16_t *pcm; 22 int16_t *pcm;
128 if (!state) { 62 if (!state) {
129 perror("EFR_decoder_create()"); 63 perror("EFR_decoder_create()");
130 exit(1); 64 exit(1);
131 } 65 }
132 for (frame_no = 0; ; frame_no++) { 66 for (frame_no = 0; ; frame_no++) {
133 rc = read_input(inf, input_bits, argv[1]); 67 rc = read_etsi_bits(inf, 0, input_bits, ETSI_DEC_NWORDS,
68 argv[1]);
134 if (!rc) 69 if (!rc)
135 break; 70 break;
136 if (input_bits[0] > 1) { 71 if (input_bits[0] > 1) {
137 fprintf(stderr, "error in %s frame #%u: BFI > 1\n", 72 fprintf(stderr, "error in %s frame #%u: BFI > 1\n",
138 argv[1], frame_no); 73 argv[1], frame_no);