/*
|
* 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, (int)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)) != 0) 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 %d other link%s -- unchanged.\n",
|
progname, name, (int)(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, (int)(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)
|
{
|
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;
|
|
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:
|
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);
|
}
|
