2 * Copyright 1992 by Jutta Degener and Carsten Bormann, Technische
3 * Universitaet Berlin. See the accompanying file "COPYRIGHT" for
4 * details. THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
7 /* $Header: /tmp_amd/presto/export/kbs/jutta/src/gsm/RCS/toast.c,v 1.8 1996/07/02 10:41:04 jutta Exp $ */
11 /* toast -- lossy sound compression using the gsm library.
16 int f_decode = 0; /* decode rather than encode (-d) */
17 int f_cat = 0; /* write to stdout; implies -p (-c) */
18 int f_force = 0; /* don't ask about replacements (-f) */
19 int f_precious = 0; /* avoid deletion of original (-p) */
20 int f_fast = 0; /* use faster fpt algorithm (-F) */
21 int f_verbose = 0; /* debugging (-V) */
22 int f_ltp_cut = 0; /* LTP cut-off margin (-C) */
24 struct stat instat; /* stat (inname) */
27 char *inname, *outname;
30 * The function (*output)() writes a frame of 160 samples given as
31 * 160 signed 16 bit values (gsm_signals) to <out>.
32 * The function (*input)() reads one such frame from <in>.
33 * The function (*init_output)() begins output (e.g. writes a header).,
34 * The function (*init_input)() begins input (e.g. skips a header).
36 * There are different versions of input, output, init_input and init_output
37 * for different formats understood by toast; which ones are used
38 * depends on the command line arguments and, in their absence, the
39 * filename; the fallback is #defined in toast.h
41 * The specific implementations of input, output, init_input and init_output
42 * for a format `foo' live in toast_foo.c.
45 int (*output ) P((gsm_signal *)),
46 (*input ) P((gsm_signal *));
47 int (*init_input) P((void)),
48 (*init_output) P((void));
50 static int generic_init P0() { return 0; } /* NOP */
54 char * name, * longname, * suffix;
56 int (* init_input ) P((void)),
57 (* init_output) P((void));
59 int (* input ) P((gsm_signal * )),
60 (* output) P((gsm_signal * ));
64 "8 kHz, 8 bit u-law encoding with Sun audio header", ".au",
70 "u-law", "plain 8 kHz, 8 bit u-law encoding", ".u",
77 "A-law", "8 kHz, 8 bit A-law encoding", ".A",
85 "16 bit (13 significant) signed 8 kHz signal", ".l",
92 struct fmtdesc * alldescs[] = {
97 (struct fmtdesc *)NULL
100 #define DEFAULT_FORMAT f_ulaw /* default audio format, others */
101 /* are: f_alaw,f_audio,f_linear */
102 struct fmtdesc * f_format = 0;
105 * basename + suffix of a pathname
107 static char * endname P1((name), char * name)
110 char * s = strrchr(name, '/');
111 if (s && s[1]) name = s + 1;
118 * Try to figure out what we're supposed to do from the argv[0], if
119 * any, and set the parameters accordingly.
121 static void parse_argv0 P1((av0), char * av0 )
125 progname = av0 = endname(av0 ? av0 : "toast");
127 /* If the name starts with `un', we want to decode, not code.
128 * If the name ends in `cat', we want to write to stdout,
129 * and decode as well.
132 if (!strncmp(av0, "un", 2)) f_decode = 1;
133 if ( (l = strlen(av0)) >= 3 /* strlen("cat") */
134 && !strcmp( av0 + l - 3, "cat" )) f_cat = f_decode = 1;
139 * Check whether the name (possibly generated by appending
140 * .gsm to something else) is short enough for this system.
142 static int length_okay P1((name), char * name)
144 long max_filename_length = 0;
147 /* If our _pathname_ is too long, we'll usually not be
148 * able to open the file at all -- don't worry about that.
150 * But if the _filename_ is too long, there is danger of
151 * silent truncation on some systems, which results
152 * in the target replacing the source!
159 max_filename_length = NAME_MAX;
167 if ((s = end) > name) {
168 if (s > name + 1) s--;
174 max_filename_length = pathconf(s > name ? name : ".",
176 if (max_filename_length == -1 && errno) {
177 perror( s > name ? name : "." );
179 "%s: cannot get dynamic filename length limit for %s.\n",
180 progname, s > name ? name : ".");
183 if (s > name) *s = tmp;
185 #endif /* USE_PATHCONF */
186 #endif /* _PC_NAME_MAX */
187 #endif /* !NAME_MAX */
189 if (max_filename_length > 0 && strlen(end) > max_filename_length) {
191 "%s: filename \"%s\" is too long (maximum is %ld)\n",
192 progname, endname(name), max_filename_length );
200 * Return a pointer the suffix of a string, if any.
201 * A suffix alone has no suffix, an empty suffix can not be had.
203 static char * suffix P2((name, suf), char *name, char * suf)
205 size_t nlen = strlen(name);
206 size_t slen = strlen(suf);
208 if (!slen || nlen <= slen) return (char *)0;
210 return memcmp(name, suf, slen) ? (char *)0 : name;
214 static void catch_signals P1((fun), SIGHANDLER_T (*fun) ())
217 signal( SIGHUP, fun );
220 signal( SIGINT, fun );
223 signal( SIGPIPE, fun );
226 signal( SIGTERM, fun );
229 signal( SIGXFSZ, fun );
233 static SIGHANDLER_T onintr P0()
235 char * tmp = outname;
237 #ifdef HAS_SYSV_SIGNALS
238 catch_signals( SIG_IGN );
242 if (tmp) (void)unlink(tmp);
248 * Allocate some memory and complain if it fails.
250 static char * emalloc P1((len), size_t len)
253 if (!(s = malloc(len))) {
254 fprintf(stderr, "%s: failed to malloc %d bytes -- abort\n",
262 static char* normalname P3((name, want, cut), char *name, char *want,char *cut)
270 maxlen = strlen(name) + 1 + strlen(want) + strlen(cut);
271 p = strcpy(emalloc(maxlen), name);
273 if (s = suffix(p, cut)) strcpy(s, want);
274 else if (*want && !suffix(p, want)) strcat(p, want);
280 * Generate a `plain' (non-encoded) name from a given name.
282 static char * plainname P1((name), char *name)
284 return normalname(name, "", SUFFIX_TOASTED );
288 * Generate a `code' name from a given name.
290 static char * codename P1((name), char *name)
292 return normalname( name, SUFFIX_TOASTED, "" );
296 * If we're supposed to ask (fileno (stderr) is a tty, and f_force not
297 * set), ask the user whether to overwrite a file or not.
299 static int ok_to_replace P1(( name ), char * name)
303 if (f_force) return 1; /* YES, do replace */
304 if (!isatty(fileno(stderr))) return 0; /* NO, don't replace */
307 "%s already exists; do you wish to overwrite %s (y or n)? ",
311 for (c = reply = getchar(); c != '\n' && c != EOF; c = getchar()) ;
312 if (reply == 'y') return 1;
314 fprintf(stderr, "\tnot overwritten\n");
318 static void update_mode P0()
320 if (!instat.st_nlink) return; /* couldn't stat in */
323 if (fchmod(fileno(out), instat.st_mode & 07777)) {
325 fprintf(stderr, "%s: could not change file mode of \"%s\"\n",
330 if (outname && chmod(outname, instat.st_mode & 07777)) {
332 fprintf(stderr, "%s: could not change file mode of \"%s\"\n",
335 #endif /* HAS_CHMOD */
336 #endif /* HAS_FCHMOD */
339 static void update_own P0()
341 if (!instat.st_nlink) return; /* couldn't stat in */
343 (void)fchown(fileno(out), instat.st_uid, instat.st_gid);
346 (void)chown(outname, instat.st_uid, instat.st_gid);
347 #endif /* HAS_CHOWN */
348 #endif /* HAS_FCHOWN */
351 static void update_times P0()
353 if (!instat.st_nlink) return; /* couldn't stat in */
357 struct timeval tv[2];
359 tv[0].tv_sec = instat.st_atime;
360 tv[1].tv_sec = instat.st_mtime;
361 tv[0].tv_usec = tv[1].tv_usec = 0;
362 (void) utimes(outname, tv);
372 ut.actime = instat.st_atime;
373 ut.modtime = instat.st_mtime;
375 # ifdef HAS_UTIMEUSEC
376 ut.acusec = instat.st_ausec;
377 ut.modusec = instat.st_musec;
378 # endif /* HAS_UTIMEUSEC */
380 (void) utime(outname, &ut);
386 ut[0] = instat.st_atime;
387 ut[1] = instat.st_mtime;
389 (void) utime(outname, ut);
393 #endif /* HAS_UTIME */
394 #endif /* HAS_UTIMES */
398 static int okay_as_input P3((name,f,st), char* name, FILE* f, struct stat * st)
401 if (fstat(fileno(f), st) < 0)
403 if (stat(name, st) < 0)
407 fprintf(stderr, "%s: cannot stat \"%s\"\n", progname, name);
411 if (!S_ISREG(st->st_mode)) {
413 "%s: \"%s\" is not a regular file -- unchanged.\n",
417 if (st->st_nlink > 1 && !f_cat && !f_precious) {
419 "%s: \"%s\" has %s other link%s -- unchanged.\n",
420 progname,name,st->st_nlink - 1,"s" + (st->st_nlink<=2));
426 static void prepare_io P1(( desc), struct fmtdesc * desc)
428 output = desc->output;
431 init_input = desc->init_input;
432 init_output = desc->init_output;
435 static struct fmtdesc * grok_format P1((name), char * name)
443 for (f = alldescs; *f; f++) {
446 && suffix(c, (*f)->suffix)) {
455 return (struct fmtdesc *)0;
458 static int open_input P2((name, st), char * name, struct stat * st)
460 struct fmtdesc * f = f_format;
462 st->st_nlink = 0; /* indicates `undefined' value */
464 inname = (char *)NULL;
471 if (f_decode) inname = codename(name);
473 if (!f_cat && suffix(name, SUFFIX_TOASTED)) {
475 "%s: %s already has \"%s\" suffix -- unchanged.\n",
476 progname, name, SUFFIX_TOASTED );
479 inname = strcpy(emalloc(strlen(name)+1), name);
481 if (!(in = fopen(inname, READ))) {
482 perror(inname); /* not guaranteed to be valid here */
483 fprintf(stderr, "%s: cannot open \"%s\" for reading\n",
487 if (!okay_as_input(inname, in, st)) return 0;
488 if (!f) f = grok_format(inname);
490 prepare_io( f ? f : & DEFAULT_FORMAT );
494 static int open_output P1((name), char *name)
496 if (!name || f_cat) {
498 outname = (char *)NULL;
507 o = (*(f_decode ? plainname : codename))(name);
508 if (!length_okay(o)) return 0;
509 if ((outfd = open(o, O_WRITE_EXCL, 0666)) >= 0)
510 out = fdopen(outfd, WRITE);
511 else if (errno != EEXIST) out = (FILE *)NULL;
512 else if (ok_to_replace(o)) out = fopen(o, WRITE);
518 "%s: can't open \"%s\" for writing\n",
520 if (outfd >= 0) (void)close(outfd);
529 static int process_encode P0()
537 if (!(r = gsm_create())) {
541 (void)gsm_option(r, GSM_OPT_FAST, &f_fast);
542 (void)gsm_option(r, GSM_OPT_VERBOSE, &f_verbose);
543 (void)gsm_option(r, GSM_OPT_LTP_CUT, &f_ltp_cut);
545 while ((cc = (*input)(s)) > 0) {
546 if (cc < sizeof(s) / sizeof(*s))
547 memset((char *)(s+cc), 0, sizeof(s)-(cc * sizeof(*s)));
549 if (fwrite((char *)d, sizeof(d), 1, out) != 1) {
550 perror(outname ? outname : "stdout");
551 fprintf(stderr, "%s: error writing to %s\n",
552 progname, outname ? outname : "stdout");
558 perror(inname ? inname : "stdin");
559 fprintf(stderr, "%s: error reading from %s\n",
560 progname, inname ? inname : "stdin");
569 static int process_decode P0()
577 if (!(r = gsm_create())) { /* malloc failed */
581 (void)gsm_option(r, GSM_OPT_FAST, &f_fast);
582 (void)gsm_option(r, GSM_OPT_VERBOSE, &f_verbose);
584 while ((cc = fread(s, 1, sizeof(s), in)) > 0) {
586 if (cc != sizeof(s)) {
587 if (cc >= 0) fprintf(stderr,
588 "%s: incomplete frame (%d byte%s missing) from %s\n",
589 progname, sizeof(s) - cc,
590 "s" + (sizeof(s) - cc == 1),
591 inname ? inname : "stdin" );
596 if (gsm_decode(r, s, d)) {
597 fprintf(stderr, "%s: bad frame in %s\n",
598 progname, inname ? inname : "stdin");
604 if ((*output)(d) < 0) {
606 fprintf(stderr, "%s: error writing to %s\n",
614 perror(inname ? inname : "stdin" );
615 fprintf(stderr, "%s: error reading from %s\n", progname,
616 inname ? inname : "stdin");
625 static int process P1((name), char * name)
635 if (!open_input(name, &instat) || !open_output(name))
638 if ((*(f_decode ? init_output : init_input))()) {
639 fprintf(stderr, "%s: error %s %s\n",
641 f_decode ? "writing header to" : "reading header from",
642 f_decode ? (outname ? outname : "stdout")
643 : (inname ? inname : "stdin"));
647 if ((*(f_decode ? process_decode : process_encode))())
650 if (fflush(out) < 0 || ferror(out)) {
651 perror(outname ? outname : "stdout");
652 fprintf(stderr, "%s: error writing \"%s\"\n", progname,
653 outname ? outname:"stdout");
663 if (fclose(out) < 0) {
665 fprintf(stderr, "%s: error writing \"%s\"\n",
669 if (outname != name) free(outname);
674 (void)fclose(in), in = (FILE *)0;
675 if (!f_cat && !f_precious) {
676 if (unlink(inname) < 0) {
679 "%s: source \"%s\" not deleted.\n",
684 if (inname != name) free(inname);
690 * Error handling and cleanup.
693 if (out && out != stdout) {
694 (void)fclose(out), out = (FILE *)0;
695 if (unlink(outname) < 0 && errno != ENOENT && errno != EINTR) {
697 fprintf(stderr, "%s: could not unlink \"%s\"\n",
701 if (in && in != stdin) (void)fclose(in), in = (FILE *)0;
703 if (inname && inname != name) free(inname);
704 if (outname && outname != name) free(outname);
709 static void version P0()
711 printf( "%s 1.0, version %s\n",
713 "$Id: toast.c,v 1.8 1996/07/02 10:41:04 jutta Exp $" );
716 static void help P0()
718 printf("Usage: %s [-fcpdhvaulsFC] [files...]\n", progname);
721 printf(" -f force Replace existing files without asking\n");
722 printf(" -c cat Write to stdout, do not remove source files\n");
723 printf(" -d decode Decode data (default is encode)\n");
724 printf(" -p precious Do not delete the source\n");
727 printf(" -u u-law Force 8 kHz/8 bit u-law in/output format\n");
728 printf(" -s sun .au Force Sun .au u-law in/output format\n");
729 printf(" -a A-law Force 8 kHz/8 bit A-law in/output format\n");
730 printf(" -l linear Force 16 bit linear in/output format\n");
733 printf(" -F fast Sacrifice conformance to performance\n");
734 printf(" -C cutoff Ignore most samples during LTP\n");
735 printf(" -v version Show version information\n");
736 printf(" -h help Print this text\n");
741 static void set_format P1((f), struct fmtdesc * f)
743 if (f_format && f_format != f) {
745 "%s: only one of -[uals] is possible (%s -h for help)\n",
753 int main P2((ac, av), int ac, char **av)
757 extern char * optarg;
761 while ((opt = getopt(ac, av, "fcdpvhuaslVFC:")) != EOF) switch (opt) {
763 case 'd': f_decode = 1; break;
764 case 'f': f_force = 1; break;
765 case 'c': f_cat = 1; break;
766 case 'p': f_precious = 1; break;
767 case 'F': f_fast = 1; break;
768 case 'C': f_ltp_cut = 100; break;
770 case 'V': f_verbose = 1; break; /* undocumented */
773 case 'u': set_format( &f_ulaw ); break;
774 case 'l': set_format( &f_linear ); break;
775 case 'a': set_format( &f_alaw ); break;
776 case 's': set_format( &f_audio ); break;
778 case 'v': version(); exit(0);
779 case 'h': help(); exit(0);
784 "Usage: %s [-fcpdhvuaslFC] [files...] (-h for help)\n",
794 catch_signals(onintr);
796 if (ac <= 0) process( (char *)0 );
797 else while (ac--) process( *av++ );