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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <locale.h>
#include <signal.h>
#include <unistd.h>
#include "vt.h"
#include "misc.h"
#include "fdset.h"
#include "vbi.h"
#include "lang.h"
#include "dllist.h"
#include "export.h"
static volatile int timed_out = 0;
static char *channel;
char *outfile = "";
u_int16_t sid;
struct req
{
struct dl_node node[1];
char *name; // file name
char *pgno_str; // the pgno as given on the cmdline
int pgno, subno; // decoded pgno
struct export *export; // export data
struct vt_page vtp[1]; // the capture page data
};
static void usage(FILE *fp, int exitval)
{
fprintf(fp, "\nUsage: %s [options] ppp.ss...\n", prgname);
fprintf(fp,
"\n"
" Valid options:\t\tDefault:\n"
" -cs -charset\t\tlatin-1\n"
" <latin-1/2/koi8-r/iso8859-7>\n"
" -f -format <fmt,options>\tascii\n"
" -f help -format help\n"
" -h -help\n"
" -n -name <filename>\t\tttext-%%s.%%e\n"
" -s -sid <sid>\t\t(none;dvb only)\n"
" -to -timeout <secs>\t\t(none)\n"
" -t -ttpid <ttpid>\t\t(none;dvb only)\n"
" -v -vbi <vbidev>\t\t/dev/vbi\n"
" \t\t/dev/vbi0\n"
" \t\t/dev/video0\n"
" \t\t/dev/dvb/adapter0/demux0\n"
"\n"
" ppp.ss stands for a page number and an\n"
" optional subpage number (ie 123.4).\n"
);
exit(exitval);
}
static void exp_help(FILE *fp)
{
struct export_module **ep;
char **cp, c;
fprintf(fp,
"\nSyntax: -format Name[,Options]\n"
"\n"
" Name\tExt.\tOptions\n"
" --------------------------------\n"
);
for (ep = modules; *ep; ep++)
{
fprintf(fp, " %-7s\t.%-4s", (*ep)->fmt_name, (*ep)->extension);
for (c = '\t', cp = (*ep)->options; cp && *cp; cp++, c = ',')
fprintf(fp, "%c%s", c, *cp);
fprintf(fp, "\n");
}
fprintf(fp,
"\n"
"Common options: reveal,hide\n"
"Example: -format ansi,reveal,bg=none\n"
"\n"
);
exit(0);
}
static int arg_pgno(char *p, int *subno)
{
char *end;
int pgno;
*subno = ANY_SUB;
if (*p)
{
pgno = strtol(p, &end, 16);
if ((*end == ':' || *end == '/' || *end == '.') && end[1])
*subno = strtol(end + 1, &end, 16);
if (*end == 0)
if (pgno >= 0x100 && pgno <= 0x899)
if (*subno == ANY_SUB || (*subno >= 0x00 && *subno <= 0x3f7f))
return pgno;
}
fatal("%s: invalid page number", p);
}
static int option(int argc, char **argv, int *ind, char **arg)
{
static struct { char *nam, *altnam; int arg; } opts[] = {
{ "-charset", "-cs", 1 },
{ "-format", "-f", 1 },
{ "-help", "-h", 0 },
{ "-name", "-n", 1 },
{ "-sid", "-s", 1 },
{ "-timeout", "-to", 1 },
{ "-ttpid", "-t", 1 },
{ "-vbi", "-v", 1 },
};
int i;
if (*ind >= argc)
return 0;
*arg = argv[(*ind)++];
for (i = 0; i < NELEM(opts); ++i)
if (streq(*arg, opts[i].nam) || streq(*arg, opts[i].altnam))
{
if (opts[i].arg)
if (*ind < argc)
*arg = argv[(*ind)++];
else
fatal("option %s requires an argument", *arg);
return i+1;
}
if (**arg == '-')
{
fatal("%s: invalid option", *arg);
usage(stderr, 2);
}
return -1;
}
static void event(struct dl_head *reqs, struct vt_event *ev)
{
struct req *req, *nxt;
switch (ev->type)
{
case EV_PAGE: // new page
{
struct vt_page *vtp = ev->p1;
for (req = PTR reqs->first; nxt = PTR req->node->next; req = nxt)
if (req->pgno == vtp->pgno)
if (req->subno == ANY_SUB || req->subno == vtp->subno)
{
*req->vtp = *vtp;
dl_insert_last(reqs + 1, dl_remove(req->node));
}
}
}
}
int main(int argc, char **argv)
{
char *vbi_name = NULL;
int timeout = 0;
char *fname = "ttext-%s.%e";
char *out_fmt = "ascii";
struct export *fmt = 0;
int opt, ind;
char *arg;
struct vbi *vbi;
struct req *req;
struct dl_head reqs[2]; // simple linear lists of requests & captures
int ttpid = -1;
setlocale (LC_CTYPE, "");
setprgname(argv[0]);
fdset_init(fds);
dl_init(reqs); // the requests
dl_init(reqs+1); // the captured pages
ind = 1;
while (opt = option(argc, argv, &ind, &arg))
switch (opt)
{
case 1: // charset
if (streq(arg, "latin-1") || streq(arg, "1"))
latin1 = 1;
else if (streq(arg, "latin-2") || streq(arg, "2"))
latin1 = 0;
else if (streq(arg, "koi8-r") || streq(arg, "koi"))
latin1 = KOI8;
else if (streq(arg, "iso8859-7") || streq(arg, "el"))
latin1 = GREEK;
else
fatal("bad charset (not latin-1/2/koi8-r/iso8859-7)");
break;
case 2: // format
if (streq(arg, "help") || streq(arg, "?") || streq(arg, "list"))
exp_help(stdout);
out_fmt = arg;
fmt = 0;
break;
case 3: // help
usage(stdout, 0);
break;
case 4: // name
fname = arg;
break;
case 5: // timeout
timeout = strtol(arg, 0, 10);
if (timeout < 1 || timeout > 999999)
fatal("bad timeout value", timeout);
break;
case 6: // service id
sid = strtoul(arg, NULL, 0);
break;
case 7: // teletext pid
ttpid = strtoul(arg, NULL, 0);
break;
case 8: // vbi
vbi_name = arg;
break;
case -1: // non-option arg
if (not fmt)
fmt = export_open(out_fmt);
if (not fmt)
fatal("%s", export_errstr());
if (not(req = malloc(sizeof(*req))))
out_of_mem(sizeof(*req));
req->name = fname;
req->pgno_str = arg;
req->pgno = arg_pgno(arg, &req->subno);
req->export = fmt;
dl_insert_last(reqs, req->node);
break;
}
if (dl_empty(reqs))
fatal("no pages requested");
// setup device
if (not(vbi = vbi_open(vbi_name, 0, channel, outfile, sid, ttpid)))
fatal("cannot open %s", vbi_name);
vbi_add_handler(vbi, event, reqs); // register event handler
if (timeout)
alarm(timeout);
// capture pages (moves requests from reqs[0] to reqs[1])
while (not dl_empty(reqs) && not timed_out)
if (fdset_select(fds, 30000) == 0) // 30sec select time out
{
error("no signal.");
break;
}
alarm(0);
vbi_del_handler(vbi, event, reqs);
vbi_close(vbi);
if (not dl_empty(reqs))
error("capture aborted. Some pages are missing.");
for (req = PTR reqs[1].first; req->node->next; req = PTR req->node->next)
{
fname = export_mkname(req->export, req->name, req->vtp, req->pgno_str);
if (not fname || export(req->export, req->vtp, fname))
error("error saving page %s: %s", req->pgno_str, export_errstr());
if (fname)
free(fname);
}
exit(dl_empty(reqs) ? 0 : 1);
}
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