--- /dev/null
+/*
+ * 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) */
+
+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");
+ 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);
+
+ while ((opt = getopt(ac, av, "fcdpvhuaslVFC:")) != EOF) switch (opt) {
+
+ 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;
+
+ 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);
+}
projects / lcr.git / blobdiff