FreeCalypso > hg > gsm-codec-lib

comparison efrtest/etsi-enc.c @ 433:51678b070c7a

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
efrtest: split etsi-enc.c for code reuse
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 08 May 2024 01:13:50 +0000
parents d4f47d0962e7
children
comparison
equal deleted inserted replaced
432:d4f47d0962e7 433:51678b070c7a
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 <unistd.h> 16 #include <unistd.h>
17 #include "../libgsmefr/gsm_efr.h" 17 #include "../libgsmefr/gsm_efr.h"
18
19 static int
20 read_input(inf, pcm, filename_for_errs, big_endian)
21 FILE *inf;
22 int16_t *pcm;
23 char *filename_for_errs;
24 {
25 uint8_t file_bytes[320], *sp;
26 int cc;
27 unsigned n;
28
29 cc = fread(file_bytes, 2, 160, inf);
30 if (cc == 0)
31 return 0;
32 if (cc != 160) {
33 fprintf(stderr, "error: short read from %s\n",
34 filename_for_errs);
35 exit(1);
36 }
37 sp = file_bytes;
38 for (n = 0; n < 160; n++) {
39 if (big_endian)
40 pcm[n] = (sp[0] << 8) | sp[1];
41 else
42 pcm[n] = sp[0] | (sp[1] << 8);
43 sp += 2;
44 }
45 return 1;
46 }
47
48 static void
49 frame2bits(frame, bits)
50 uint8_t *frame, *bits;
51 {
52 unsigned nb, byte, mask, bit;
53
54 for (nb = 0; nb < EFR_RTP_FRAME_LEN; nb++) {
55 byte = *frame++;
56 for (mask = 0x80; mask; mask >>= 1) {
57 if (byte & mask)
58 bit = 1;
59 else
60 bit = 0;
61 *bits++ = bit;
62 }
63 }
64 }
65
66 static void
67 emit_output(outf, bits, nbits, big_endian)
68 FILE *outf;
69 uint8_t *bits;
70 unsigned nbits;
71 {
72 unsigned n;
73
74 for (n = 0; n < nbits; n++) {
75 if (big_endian) {
76 putc(0, outf);
77 putc(bits[n], outf);
78 } else {
79 putc(bits[n], outf);
80 putc(0, outf);
81 }
82 }
83 }
84 18
85 main(argc, argv) 19 main(argc, argv)
86 char **argv; 20 char **argv;
87 { 21 {
88 char *infname, *outfname; 22 char *infname, *outfname;