FreeCalypso > hg > sipout-test-utils
view tone-detect/g711-tone-detect.c @ 9:ff535725e01f
g711-tone-detect program written
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Thu, 07 Mar 2024 00:05:44 -0800 |
parents | |
children |
line wrap: on
line source
/* * This program reads a G.711 sample stream recording (typically extracted * from an RTP stream pcap with rtp-g711-extr by the same author) and feeds * it to SpanDSP modem connection tone detector. */ #include <stdio.h> #include <stdint.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <spandsp.h> #include "../include/pstn_defs.h" static char *data_filename; static int use_alaw, tone_type_sought; static g711_state_t *g711_dec_state; static modem_connect_tones_rx_state_t *tones_rx_state; static unsigned frame_count; static void report_func(void *user_data, int code, int level, int delay) { printf("@%u.%03us: %s\n", frame_count / 50, (frame_count % 50) * 20, modem_connect_tone_to_str(code)); } main(argc, argv) char **argv; { FILE *inf; uint8_t g711_buf[FRAME_20MS]; int16_t linear[FRAME_20MS]; int cc; switch (argc) { case 3: data_filename = argv[1]; tone_type_sought = atoi(argv[2]); break; case 4: data_filename = argv[1]; if (strcmp(argv[2], "alaw")) goto usage; use_alaw = 1; tone_type_sought = atoi(argv[3]); break; default: usage: fprintf(stderr, "usage: %s data-filename [alaw] tone-type-code\n", argv[0]); exit(1); } inf = fopen(data_filename, "r"); if (!inf) { perror(data_filename); exit(1); } g711_dec_state = g711_init(NULL, use_alaw ? G711_ALAW : G711_ULAW); if (!g711_dec_state) { fprintf(stderr, "error: g711_init() failed!\n"); exit(1); } tones_rx_state = modem_connect_tones_rx_init(NULL, tone_type_sought, report_func, NULL); if (!tones_rx_state) { fprintf(stderr, "error: modem_connect_tones_rx_init() failed!\n"); exit(1); } for (frame_count = 0; ; frame_count++) { cc = fread(g711_buf, 1, FRAME_20MS, inf); if (cc == 0) break; g711_decode(g711_dec_state, linear, g711_buf, cc); modem_connect_tones_rx(tones_rx_state, linear, cc); } exit(0); }