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- /*
- * Copyright 1992 by Jutta Degener and Carsten Bormann, Technische
- * Universitaet Berlin. See the accompanying file "COPYRIGHT" for
- * details. THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
- */
-
- /* $Header: /tmp_amd/presto/export/kbs/jutta/src/gsm/RCS/toast.c,v 1.8 1996/07/02 10:41:04 jutta Exp $ */
-
- #include "toast.h"
-
- /* toast -- lossy sound compression using the gsm library.
- */
-
- char * progname;
-
- int f_decode = 0; /* decode rather than encode (-d) */
- int f_cat = 0; /* write to stdout; implies -p (-c) */
- int f_force = 0; /* don't ask about replacements (-f) */
- int f_precious = 0; /* avoid deletion of original (-p) */
- int f_fast = 0; /* use faster fpt algorithm (-F) */
- int f_verbose = 0; /* debugging (-V) */
- int f_ltp_cut = 0; /* LTP cut-off margin (-C) */
-
- #ifdef AMIGA
- int amigalinear=0;
- #endif
-
- struct stat instat; /* stat (inname) */
-
- FILE *in, *out;
- char *inname, *outname;
-
- /*
- * The function (*output)() writes a frame of 160 samples given as
- * 160 signed 16 bit values (gsm_signals) to <out>.
- * The function (*input)() reads one such frame from <in>.
- * The function (*init_output)() begins output (e.g. writes a header).,
- * The function (*init_input)() begins input (e.g. skips a header).
- *
- * There are different versions of input, output, init_input and init_output
- * for different formats understood by toast; which ones are used
- * depends on the command line arguments and, in their absence, the
- * filename; the fallback is #defined in toast.h
- *
- * The specific implementations of input, output, init_input and init_output
- * for a format `foo' live in toast_foo.c.
- */
-
- int (*output ) P((gsm_signal *)),
- (*input ) P((gsm_signal *));
- int (*init_input) P((void)),
- (*init_output) P((void));
-
- static int generic_init P0() { return 0; } /* NOP */
-
- struct fmtdesc {
-
- char * name, * longname, * suffix;
-
- int (* init_input ) P((void)),
- (* init_output) P((void));
-
- int (* input ) P((gsm_signal * )),
- (* output) P((gsm_signal * ));
-
- } f_audio = {
- "audio",
- "8 kHz, 8 bit u-law encoding with Sun audio header", ".au",
- audio_init_input,
- audio_init_output,
- ulaw_input,
- ulaw_output
- }, f_ulaw = {
- "u-law", "plain 8 kHz, 8 bit u-law encoding", ".u",
- generic_init,
- generic_init,
- ulaw_input,
- ulaw_output
-
- }, f_alaw = {
- "A-law", "8 kHz, 8 bit A-law encoding", ".A",
- generic_init,
- generic_init,
- alaw_input,
- alaw_output
-
- }, f_linear = {
- "linear",
- "16 bit (13 significant) signed 8 kHz signal", ".l",
- generic_init,
- generic_init,
- linear_input,
- linear_output
- };
-
- struct fmtdesc * alldescs[] = {
- &f_audio,
- &f_alaw,
- &f_ulaw,
- &f_linear,
- (struct fmtdesc *)NULL
- };
-
- #define DEFAULT_FORMAT f_ulaw /* default audio format, others */
- /* are: f_alaw,f_audio,f_linear */
- struct fmtdesc * f_format = 0;
-
- /*
- * basename + suffix of a pathname
- */
- static char * endname P1((name), char * name)
- {
- if (name) {
- char * s = strrchr(name, '/');
- if (s && s[1]) name = s + 1;
- }
- return name;
-
- }
-
- /*
- * Try to figure out what we're supposed to do from the argv[0], if
- * any, and set the parameters accordingly.
- */
- static void parse_argv0 P1((av0), char * av0 )
- {
- int l;
-
- progname = av0 = endname(av0 ? av0 : "toast");
-
- /* If the name starts with `un', we want to decode, not code.
- * If the name ends in `cat', we want to write to stdout,
- * and decode as well.
- */
-
- if (!strncmp(av0, "un", 2)) f_decode = 1;
- if ( (l = strlen(av0)) >= 3 /* strlen("cat") */
- && !strcmp( av0 + l - 3, "cat" )) f_cat = f_decode = 1;
- }
-
-
- /*
- * Check whether the name (possibly generated by appending
- * .gsm to something else) is short enough for this system.
- */
- static int length_okay P1((name), char * name)
- {
- long max_filename_length = 0;
- char * end;
-
- /* If our _pathname_ is too long, we'll usually not be
- * able to open the file at all -- don't worry about that.
- *
- * But if the _filename_ is too long, there is danger of
- * silent truncation on some systems, which results
- * in the target replacing the source!
- */
-
- if (!name) return 0;
- end = endname(name);
-
- #ifdef NAME_MAX
- max_filename_length = NAME_MAX;
- #else
- #ifdef _PC_NAME_MAX
- #ifdef USE_PATHCONF
- { char * s, tmp;
-
- /* s = dirname(name)
- */
- if ((s = end) > name) {
- if (s > name + 1) s--;
- tmp = s;
- *s = 0;
- }
-
- errno = 0;
- max_filename_length = pathconf(s > name ? name : ".",
- _PC_NAME_MAX);
- if (max_filename_length == -1 && errno) {
- perror( s > name ? name : "." );
- fprintf(stderr,
- "%s: cannot get dynamic filename length limit for %s.\n",
- progname, s > name ? name : ".");
- return 0;
- }
- if (s > name) *s = tmp;
- }
- #endif /* USE_PATHCONF */
- #endif /* _PC_NAME_MAX */
- #endif /* !NAME_MAX */
-
- if (max_filename_length > 0 && strlen(end) > max_filename_length) {
- fprintf(stderr,
- "%s: filename \"%s\" is too long (maximum is %ld)\n",
- progname, endname(name), max_filename_length );
- return 0;
- }
-
- return 1;
- }
-
- /*
- * Return a pointer the suffix of a string, if any.
- * A suffix alone has no suffix, an empty suffix can not be had.
- */
- static char * suffix P2((name, suf), char *name, char * suf)
- {
- size_t nlen = strlen(name);
- size_t slen = strlen(suf);
-
- if (!slen || nlen <= slen) return (char *)0;
- name += nlen - slen;
- return memcmp(name, suf, slen) ? (char *)0 : name;
- }
-
-
- static void catch_signals P1((fun), SIGHANDLER_T (*fun) ())
- {
- #ifdef SIGHUP
- signal( SIGHUP, fun );
- #endif
- #ifdef SIGINT
- signal( SIGINT, fun );
- #endif
- #ifdef SIGPIPE
- signal( SIGPIPE, fun );
- #endif
- #ifdef SIGTERM
- signal( SIGTERM, fun );
- #endif
- #ifdef SIGXFSZ
- signal( SIGXFSZ, fun );
- #endif
- }
-
- static SIGHANDLER_T onintr P0()
- {
- char * tmp = outname;
-
- #ifdef HAS_SYSV_SIGNALS
- catch_signals( SIG_IGN );
- #endif
-
- outname = (char *)0;
- if (tmp) (void)unlink(tmp);
-
- exit(1);
- }
-
- /*
- * Allocate some memory and complain if it fails.
- */
- static char * emalloc P1((len), size_t len)
- {
- char * s;
- if (!(s = malloc(len))) {
- fprintf(stderr, "%s: failed to malloc %d bytes -- abort\n",
- progname, len);
- onintr();
- exit(1);
- }
- return s;
- }
-
- static char* normalname P3((name, want, cut), char *name, char *want,char *cut)
- {
- size_t maxlen;
- char * s, * p;
-
- p = (char *)0;
- if (!name) return p;
-
- maxlen = strlen(name) + 1 + strlen(want) + strlen(cut);
- p = strcpy(emalloc(maxlen), name);
-
- if (s = suffix(p, cut)) strcpy(s, want);
- else if (*want && !suffix(p, want)) strcat(p, want);
-
- return p;
- }
-
- /*
- * Generate a `plain' (non-encoded) name from a given name.
- */
- static char * plainname P1((name), char *name)
- {
- return normalname(name, "", SUFFIX_TOASTED );
- }
-
- /*
- * Generate a `code' name from a given name.
- */
- static char * codename P1((name), char *name)
- {
- return normalname( name, SUFFIX_TOASTED, "" );
- }
-
- /*
- * If we're supposed to ask (fileno (stderr) is a tty, and f_force not
- * set), ask the user whether to overwrite a file or not.
- */
- static int ok_to_replace P1(( name ), char * name)
- {
- int reply, c;
-
- if (f_force) return 1; /* YES, do replace */
- if (!isatty(fileno(stderr))) return 0; /* NO, don't replace */
-
- fprintf(stderr,
- "%s already exists; do you wish to overwrite %s (y or n)? ",
- name, name);
- fflush(stderr);
-
- for (c = reply = getchar(); c != '\n' && c != EOF; c = getchar()) ;
- if (reply == 'y') return 1;
-
- fprintf(stderr, "\tnot overwritten\n");
- return 0;
- }
-
- static void update_mode P0()
- {
- if (!instat.st_nlink) return; /* couldn't stat in */
-
- #ifdef HAS_FCHMOD
- if (fchmod(fileno(out), instat.st_mode & 07777)) {
- perror(outname);
- fprintf(stderr, "%s: could not change file mode of \"%s\"\n",
- progname, outname);
- }
- #else
- #ifdef HAS_CHMOD
- if (outname && chmod(outname, instat.st_mode & 07777)) {
- perror(outname);
- fprintf(stderr, "%s: could not change file mode of \"%s\"\n",
- progname, outname);
- }
- #endif /* HAS_CHMOD */
- #endif /* HAS_FCHMOD */
- }
-
- static void update_own P0()
- {
- if (!instat.st_nlink) return; /* couldn't stat in */
- #ifdef HAS_FCHOWN
- (void)fchown(fileno(out), instat.st_uid, instat.st_gid);
- #else
- #ifdef HAS_CHOWN
- (void)chown(outname, instat.st_uid, instat.st_gid);
- #endif /* HAS_CHOWN */
- #endif /* HAS_FCHOWN */
- }
-
- static void update_times P0()
- {
- if (!instat.st_nlink) return; /* couldn't stat in */
-
- #ifdef HAS_UTIMES
- if (outname) {
- struct timeval tv[2];
-
- tv[0].tv_sec = instat.st_atime;
- tv[1].tv_sec = instat.st_mtime;
- tv[0].tv_usec = tv[1].tv_usec = 0;
- (void) utimes(outname, tv);
- }
- #else
- #ifdef HAS_UTIME
-
- if (outname) {
-
- #ifdef HAS_UTIMBUF
- struct utimbuf ut;
-
- ut.actime = instat.st_atime;
- ut.modtime = instat.st_mtime;
-
- # ifdef HAS_UTIMEUSEC
- ut.acusec = instat.st_ausec;
- ut.modusec = instat.st_musec;
- # endif /* HAS_UTIMEUSEC */
-
- (void) utime(outname, &ut);
-
- #else /* UTIMBUF */
-
- time_t ut[2];
-
- ut[0] = instat.st_atime;
- ut[1] = instat.st_mtime;
-
- (void) utime(outname, ut);
-
- #endif /* UTIMBUF */
- }
- #endif /* HAS_UTIME */
- #endif /* HAS_UTIMES */
- }
-
-
- static int okay_as_input P3((name,f,st), char* name, FILE* f, struct stat * st)
- {
- # ifdef HAS_FSTAT
- if (fstat(fileno(f), st) < 0)
- # else
- if (stat(name, st) < 0)
- # endif
- {
- perror(name);
- fprintf(stderr, "%s: cannot stat \"%s\"\n", progname, name);
- return 0;
- }
-
- if (!S_ISREG(st->st_mode)) {
- fprintf(stderr,
- "%s: \"%s\" is not a regular file -- unchanged.\n",
- progname, name);
- return 0;
- }
- if (st->st_nlink > 1 && !f_cat && !f_precious) {
- fprintf(stderr,
- "%s: \"%s\" has %s other link%s -- unchanged.\n",
- progname,name,st->st_nlink - 1,"s" + (st->st_nlink<=2));
- return 0;
- }
- return 1;
- }
-
- static void prepare_io P1(( desc), struct fmtdesc * desc)
- {
- output = desc->output;
- input = desc->input;
-
- init_input = desc->init_input;
- init_output = desc->init_output;
- }
-
- static struct fmtdesc * grok_format P1((name), char * name)
- {
- char * c;
- struct fmtdesc ** f;
-
- if (name) {
- c = plainname(name);
-
- for (f = alldescs; *f; f++) {
- if ( (*f)->suffix
- && *(*f)->suffix
- && suffix(c, (*f)->suffix)) {
-
- free(c);
- return *f;
- }
- }
-
- free(c);
- }
- return (struct fmtdesc *)0;
- }
-
- static int open_input P2((name, st), char * name, struct stat * st)
- {
- struct fmtdesc * f = f_format;
-
- st->st_nlink = 0; /* indicates `undefined' value */
- if (!name) {
- inname = (char *)NULL;
- in = stdin;
- #ifdef HAS__FSETMODE
- _fsetmode(in, "b");
- #endif
- }
- else {
- if (f_decode) inname = codename(name);
- else {
- if (!f_cat && suffix(name, SUFFIX_TOASTED)) {
- fprintf(stderr,
- "%s: %s already has \"%s\" suffix -- unchanged.\n",
- progname, name, SUFFIX_TOASTED );
- return 0;
- }
- inname = strcpy(emalloc(strlen(name)+1), name);
- }
- if (!(in = fopen(inname, READ))) {
- perror(inname); /* not guaranteed to be valid here */
- fprintf(stderr, "%s: cannot open \"%s\" for reading\n",
- progname, inname);
- return 0;
- }
- if (!okay_as_input(inname, in, st)) return 0;
- if (!f) f = grok_format(inname);
- }
- prepare_io( f ? f : & DEFAULT_FORMAT );
- return 1;
- }
-
- static int open_output P1((name), char *name)
- {
- if (!name || f_cat) {
- out = stdout;
- outname = (char *)NULL;
- #ifdef HAS__FSETMODE
- _fsetmode(out, "b");
- #endif
- }
- else {
- int outfd = -1;
- char * o;
-
- o = (*(f_decode ? plainname : codename))(name);
- if (!length_okay(o)) return 0;
- if ((outfd = open(o, O_WRITE_EXCL, 0666)) >= 0)
- out = fdopen(outfd, WRITE);
- else if (errno != EEXIST) out = (FILE *)NULL;
- else if (ok_to_replace(o)) out = fopen(o, WRITE);
- else return 0;
-
- if (!out) {
- perror(o);
- fprintf(stderr,
- "%s: can't open \"%s\" for writing\n",
- progname, o);
- if (outfd >= 0) (void)close(outfd);
- return 0;
- }
-
- outname = o;
- }
- return 1;
- }
-
- static int process_encode P0()
- {
- gsm r;
- gsm_signal s[ 160 ];
- gsm_frame d;
-
- int cc;
-
- if (!(r = gsm_create())) {
- perror(progname);
- return -1;
- }
- (void)gsm_option(r, GSM_OPT_FAST, &f_fast);
- (void)gsm_option(r, GSM_OPT_VERBOSE, &f_verbose);
- (void)gsm_option(r, GSM_OPT_LTP_CUT, &f_ltp_cut);
-
- while ((cc = (*input)(s)) > 0) {
- if (cc < sizeof(s) / sizeof(*s))
- memset((char *)(s+cc), 0, sizeof(s)-(cc * sizeof(*s)));
- gsm_encode(r, s, d);
- if (fwrite((char *)d, sizeof(d), 1, out) != 1) {
- perror(outname ? outname : "stdout");
- fprintf(stderr, "%s: error writing to %s\n",
- progname, outname ? outname : "stdout");
- gsm_destroy(r);
- return -1;
- }
- }
- if (cc < 0) {
- perror(inname ? inname : "stdin");
- fprintf(stderr, "%s: error reading from %s\n",
- progname, inname ? inname : "stdin");
- gsm_destroy(r);
- return -1;
- }
- gsm_destroy(r);
-
- return 0;
- }
-
- static int process_decode P0()
- {
- gsm r;
- gsm_frame s;
- gsm_signal d[ 160 ];
-
- int cc;
-
- if (!(r = gsm_create())) { /* malloc failed */
- perror(progname);
- return -1;
- }
- (void)gsm_option(r, GSM_OPT_FAST, &f_fast);
- (void)gsm_option(r, GSM_OPT_VERBOSE, &f_verbose);
-
- while ((cc = fread(s, 1, sizeof(s), in)) > 0) {
-
- if (cc != sizeof(s)) {
- if (cc >= 0) fprintf(stderr,
- "%s: incomplete frame (%d byte%s missing) from %s\n",
- progname, sizeof(s) - cc,
- "s" + (sizeof(s) - cc == 1),
- inname ? inname : "stdin" );
- gsm_destroy(r);
- errno = 0;
- return -1;
- }
- if (gsm_decode(r, s, d)) {
- fprintf(stderr, "%s: bad frame in %s\n",
- progname, inname ? inname : "stdin");
- gsm_destroy(r);
- errno = 0;
- return -1;
- }
-
- if ((*output)(d) < 0) {
- perror(outname);
- fprintf(stderr, "%s: error writing to %s\n",
- progname, outname);
- gsm_destroy(r);
- return -1;
- }
- }
-
- if (cc < 0) {
- perror(inname ? inname : "stdin" );
- fprintf(stderr, "%s: error reading from %s\n", progname,
- inname ? inname : "stdin");
- gsm_destroy(r);
- return -1;
- }
-
- gsm_destroy(r);
- return 0;
- }
-
- static int process P1((name), char * name)
- {
- int step = 0;
-
- out = (FILE *)0;
- in = (FILE *)0;
-
- outname = (char *)0;
- inname = (char *)0;
-
- if (!open_input(name, &instat) || !open_output(name))
- goto err;
-
- if ((*(f_decode ? init_output : init_input))()) {
- fprintf(stderr, "%s: error %s %s\n",
- progname,
- f_decode ? "writing header to" : "reading header from",
- f_decode ? (outname ? outname : "stdout")
- : (inname ? inname : "stdin"));
- goto err;
- }
-
- if ((*(f_decode ? process_decode : process_encode))())
- goto err;
-
- if (fflush(out) < 0 || ferror(out)) {
- perror(outname ? outname : "stdout");
- fprintf(stderr, "%s: error writing \"%s\"\n", progname,
- outname ? outname:"stdout");
- goto err;
- }
-
- if (out != stdout) {
-
- update_times();
- update_mode ();
- update_own ();
-
- if (fclose(out) < 0) {
- perror(outname);
- fprintf(stderr, "%s: error writing \"%s\"\n",
- progname, outname);
- goto err;
- }
- if (outname != name) free(outname);
- outname = (char *)0;
- }
- out = (FILE *)0;
- if (in != stdin) {
- (void)fclose(in), in = (FILE *)0;
- if (!f_cat && !f_precious) {
- if (unlink(inname) < 0) {
- perror(inname);
- fprintf(stderr,
- "%s: source \"%s\" not deleted.\n",
- progname, inname);
- }
- goto err;
- }
- if (inname != name) free(inname);
- inname = (char *)0;
- }
- return 0;
-
- /*
- * Error handling and cleanup.
- */
- err:
- if (out && out != stdout) {
- (void)fclose(out), out = (FILE *)0;
- if (unlink(outname) < 0 && errno != ENOENT && errno != EINTR) {
- perror(outname);
- fprintf(stderr, "%s: could not unlink \"%s\"\n",
- progname, outname);
- }
- }
- if (in && in != stdin) (void)fclose(in), in = (FILE *)0;
-
- if (inname && inname != name) free(inname);
- if (outname && outname != name) free(outname);
-
- return -1;
- }
-
- static void version P0()
- {
- printf( "%s 1.0, version %s\n",
- progname,
- "$Id: toast.c,v 1.8 1996/07/02 10:41:04 jutta Exp $" );
- }
-
- static void help P0()
- {
- printf("Usage: %s [-fcpdhvaulsFC] [files...]\n", progname);
- printf("\n");
-
- printf(" -f force Replace existing files without asking\n");
- printf(" -c cat Write to stdout, do not remove source files\n");
- printf(" -d decode Decode data (default is encode)\n");
- printf(" -p precious Do not delete the source\n");
- printf("\n");
-
- printf(" -u u-law Force 8 kHz/8 bit u-law in/output format\n");
- printf(" -s sun .au Force Sun .au u-law in/output format\n");
- printf(" -a A-law Force 8 kHz/8 bit A-law in/output format\n");
- printf(" -l linear Force 16 bit linear in/output format\n");
- #ifdef AMIGA
- printf(" -e 8bit lin Force 8 bit linear output (amiga)\n");
- #endif
- printf("\n");
-
- printf(" -F fast Sacrifice conformance to performance\n");
- printf(" -C cutoff Ignore most samples during LTP\n");
- printf(" -v version Show version information\n");
- printf(" -h help Print this text\n");
- printf("\n");
- }
-
-
- static void set_format P1((f), struct fmtdesc * f)
- {
- if (f_format && f_format != f) {
- fprintf( stderr,
- "%s: only one of -[uals] is possible (%s -h for help)\n",
- progname, progname);
- exit(1);
- }
-
- f_format = f;
- }
-
- int main P2((ac, av), int ac, char **av)
- {
- int opt;
- extern int optind;
- extern char * optarg;
-
- parse_argv0(*av);
-
- #ifdef AMIGA
- while ((opt = getopt(ac, av, "fcdpvhuasleVFC:")) != EOF) switch (opt) {
- #else
- while ((opt = getopt(ac, av, "fcdpvhuaslVFC:")) != EOF) switch (opt) {
- #endif
- case 'd': f_decode = 1; break;
- case 'f': f_force = 1; break;
- case 'c': f_cat = 1; break;
- case 'p': f_precious = 1; break;
- case 'F': f_fast = 1; break;
- case 'C': f_ltp_cut = 100; break;
- #ifndef NDEBUG
- case 'V': f_verbose = 1; break; /* undocumented */
- #endif
-
- case 'u': set_format( &f_ulaw ); break;
- case 'l': set_format( &f_linear ); break;
- case 'a': set_format( &f_alaw ); break;
- case 's': set_format( &f_audio ); break;
- #ifdef AMIGA
- case 'e': /* dodgy 8 bit linear output. piggy backed on alaw */
- amigalinear=1;
- break;
- #endif
-
-
- case 'v': version(); exit(0);
- case 'h': help(); exit(0);
-
- default:
- usage:
- fprintf(stderr,
- "Usage: %s [-fcpdhvuaslFC] [files...] (-h for help)\n",
- progname);
- exit(1);
- }
-
- f_precious |= f_cat;
-
- av += optind;
- ac -= optind;
-
- catch_signals(onintr);
-
- if (ac <= 0) process( (char *)0 );
- else while (ac--) process( *av++ );
-
- exit(0);
- }
-