FreeCalypso > hg > freecalypso-tools
view tchtools/fc-fr2tch.c @ 995:74024eb17e04
fc-loadtool help: improve language regarding 16 MiB flash chips
In FC project history, 16 MiB flash originally meant Pirelli DP-L10.
Then we got FCDEV3B with the same flash (our own design), but now we are
discovering more Calypso devices that used such large flash, both late
Calypso era (Sony Ericsson K2x0) as well as much earlier ones (FIC FLUID
devices.txt file with 2004 dates, Leonardo+ rev 5). Hence we need to
migrate to more generic or neutral language in associated documentation,
without giving elevated status to specific examples that drove our
early project history.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sun, 03 Dec 2023 21:11:12 +0000 |
parents | 8ddb16a37273 |
children |
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/* * This utility converts a GSM 06.10 speech recording from the format that is * commonly accepted as standard in the Unix/Linux world (libgsm format) into * hex strings of TCH bits to be fed to the GSM 05.03 channel encoder by way * of a TI Calypso GSM device, a FreeCalypso GSM firmware version with the * TCH rerouting feature, and fc-shell's tch play command. */ #include <sys/types.h> #include <stdio.h> #include <stdlib.h> main(argc, argv) char **argv; { FILE *inf, *outf; u_char libgsm_bytes[33], tidsp_bytes[33]; int cc, i, gotsome = 0; if (argc != 3) { fprintf(stderr, "usage: %s infile outfile\n", argv[0]); exit(1); } inf = fopen(argv[1], "r"); if (!inf) { perror(argv[1]); exit(1); } outf = fopen(argv[2], "w"); if (!outf) { perror(argv[2]); exit(1); } for (;;) { cc = fread(libgsm_bytes, 1, 33, inf); if (cc < 33) break; if ((libgsm_bytes[0] & 0xF0) != 0xD0) { invalid: fprintf(stderr, "error: %s is not in libgsm format\n", argv[1]); exit(1); } gsm0610_libgsm_to_tidsp(libgsm_bytes, tidsp_bytes); for (i = 0; i < 33; i++) fprintf(outf, "%02X", tidsp_bytes[i]); putc('\n', outf); gotsome = 1; } fclose(outf); if (cc) { if (gotsome) fprintf(stderr, "warning: extra non-33 bytes at the end of %s\n", argv[1]); else goto invalid; } exit(0); }