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comparison efrtest/etsi-enc.c @ 114:ff0372186b59

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gsmefr-etsi-enc test program written
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 29 Nov 2022 20:31:11 +0000
parents
children a13b1605142b
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113:269d341db403 114:ff0372186b59
1 /*
2 * gsmefr-etsi-enc is a test program for our EFR encoder: it reads raw
3 * 16-bit PCM (matching ETSI's *.inp) as input and writes ETSI's *.cod
4 * format as output, allowing our decoder to be tested with ETSI's
5 * official test sequences.
6 *
7 * ETSI input and output files are read and written in LE byte order,
8 * matching the official test sequences in ts_100725v050200p0.zip.
9 */
10
11 #include <stdio.h>
12 #include <stdint.h>
13 #include <stdlib.h>
14 #include <string.h>
15 #include <strings.h>
16 #include "../libgsmefr/gsm_efr.h"
17
18 static int
19 read_input(inf, pcm, filename_for_errs)
20 FILE *inf;
21 int16_t *pcm;
22 char *filename_for_errs;
23 {
24 uint8_t file_bytes[320], *sp;
25 int cc;
26 unsigned n;
27
28 cc = fread(file_bytes, 2, 160, inf);
29 if (cc == 0)
30 return 0;
31 if (cc != 160) {
32 fprintf(stderr, "error: short read from %s\n",
33 filename_for_errs);
34 exit(1);
35 }
36 sp = file_bytes;
37 for (n = 0; n < 160; n++) {
38 pcm[n] = sp[0] | (sp[1] << 8);
39 sp += 2;
40 }
41 return 1;
42 }
43
44 static void
45 frame2bits(frame, bits)
46 uint8_t *frame, *bits;
47 {
48 unsigned nb, byte, mask, bit;
49
50 for (nb = 0; nb < EFR_RTP_FRAME_LEN; nb++) {
51 byte = *frame++;
52 for (mask = 0x80; mask; mask >>= 1) {
53 if (byte & mask)
54 bit = 1;
55 else
56 bit = 0;
57 *bits++ = bit;
58 }
59 }
60 }
61
62 static void
63 emit_output(outf, bits, nbits)
64 FILE *outf;
65 uint8_t *bits;
66 unsigned nbits;
67 {
68 unsigned n;
69
70 for (n = 0; n < nbits; n++) {
71 putc(bits[n], outf);
72 putc(0, outf);
73 }
74 }
75
76 main(argc, argv)
77 char **argv;
78 {
79 char *infname, *outfname;
80 FILE *inf, *outf;
81 struct EFR_encoder_state *state;
82 int16_t pcm[160];
83 uint8_t frame[EFR_RTP_FRAME_LEN], bits[250];
84 int dtx, rc, sp, vad;
85
86 if (argc == 3 && argv[1][0] != '-') {
87 dtx = 0;
88 infname = argv[1];
89 outfname = argv[2];
90 } else if (argc == 4 && !strcmp(argv[1], "-d")) {
91 dtx = 1;
92 infname = argv[2];
93 outfname = argv[3];
94 } else {
95 fprintf(stderr, "usage: %s [-d] input.inp output.cod\n",
96 argv[0]);
97 exit(1);
98 }
99 inf = fopen(infname, "r");
100 if (!inf) {
101 perror(infname);
102 exit(1);
103 }
104 outf = fopen(outfname, "w");
105 if (!outf) {
106 perror(outfname);
107 exit(1);
108 }
109 state = EFR_encoder_create(dtx);
110 if (!state) {
111 perror("EFR_encoder_create()");
112 exit(1);
113 }
114 for (;;) {
115 rc = read_input(inf, pcm, argv[1]);
116 if (!rc)
117 break;
118 EFR_encode_frame(state, pcm, frame, &sp, &vad);
119 frame2bits(frame, bits);
120 bits[248] = vad;
121 bits[249] = sp;
122 emit_output(outf, bits + 4, 246);
123 }
124 fclose(outf);
125 exit(0);
126 }