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/*
* cmdline.c -- parse transcode command line
* Written by Andrew Church <achurch@achurch.org>
*
* This file is part of transcode, a video stream processing tool.
* transcode is free software, distributable under the terms of the GNU
* General Public License (version 2 or later). See the file COPYING
* for details.
*/
#include "transcode.h"
#include "decoder.h"
#include "probe.h"
#include "libtc/libtc.h"
#include "libtc/cfgfile.h"
#include "libtc/ratiocodes.h"
#include "libtc/tccodecs.h"
#include "libtc/xio.h"
#include "cmdline.h"
#include <ctype.h>
#ifdef HAVE_GETOPT_LONG_ONLY
#include <getopt.h>
#else
#include "libtc/getopt.h"
#endif
/* Global variables from transcode.c that should eventually go away. */
int core_mode=TC_MODE_DEFAULT;
char *im_aud_mod = NULL, *im_vid_mod = NULL;
char *ex_aud_mod = NULL, *ex_vid_mod = NULL, *ex_mplex_mod = NULL;
char *plugins_string = NULL;
char
*nav_seek_file=NULL, *socket_file=NULL,
*chbase=NULL, //*dirbase=NULL,
base[TC_BUF_MIN];
int psu_frame_threshold=12; //psu with less/equal frames are skipped.
int
no_vin_codec=1, no_ain_codec=1,
no_v_out_codec=1, no_a_out_codec=1;
int
frame_a=TC_FRAME_FIRST, // defaults to all frames
frame_b=TC_FRAME_LAST,
splitavi_frames=0,
psu_mode=TC_FALSE;
int preset_flag=0, auto_probe=1, seek_range=1;
int no_audio_adjust=TC_FALSE, no_split=TC_FALSE;
char *fc_ttime_string = NULL;
int sync_seconds=0;
pid_t writepid = 0;
/*************************************************************************/
/* Utility routines used by option processing. */
/**
* print_option_help: Print a help line for a given option.
*
* Parameters:
* name: Option name (long name).
* shortopt: Character used for the short form of the option, 0 if none.
* argname: String describing the option's argument, NULL if none.
* helptext: Help text for the option. May include newlines (\n).
* optwidth: Number of columns to use for the long name and argument.
* Return value:
* None.
*/
#define MAX_LINELEN 79 /* Maximum line length */
#define MAX_OPTWIDTH 35 /* Maximum space to allocate to options */
static void print_option_help(const char *name, char shortopt,
const char *argname, const char *helptext,
int optwidth)
{
int helpmax;
char optbuf[MAX_LINELEN+1];
const char *s;
if (optwidth > MAX_OPTWIDTH)
optwidth = MAX_OPTWIDTH;
snprintf(optbuf, sizeof(optbuf), "--%s%s%s",
name,
argname ? " " : "",
argname ? argname : "");
printf(" %c%c%c%-*s ",
shortopt ? '-' : ' ',
shortopt ? shortopt : ' ',
shortopt ? '/' : ' ',
optwidth, optbuf);
if (strlen(optbuf) > optwidth) {
/* If the option overflowed the given width, skip to the next line */
printf("\n%-*s", 5 + optwidth + 2, "");
}
/* Break help text into lines at whitespace or \n */
helpmax = MAX_LINELEN - 5 - optwidth - 2;
s = helptext;
s += strspn(s, " \t");
do {
const char *t, *next;
t = s + helpmax;
if (t > s + strlen(s))
t = s + strlen(s);
if (t > s + strcspn(s, "\n"))
t = s + strcspn(s, "\n");
/* Don't try to break text with no whitespace */
if (s + strcspn(s, " \t") < t) {
while (t > s+1 && *t && !isspace(*t))
t--;
}
if (*t == '\n') {
/* Preserve whitespace after a newline */
next = t + 1;
} else {
next = t + strspn(t, " \t\n");
}
/* Only print indent if there's more text */
printf("%.*s\n%-*s",
(int)(t-s), s,
*next ? optwidth+7+3 : 0, "");
s = next;
/* Indent subsequent lines 3 spaces (the +3 above is also for this) */
helpmax = 79 - 5 - optwidth - 2 - 3;
} while (*s);
}
/*************************************************************************/
/* The actual option definitions are located in cmdline_def.h using macros;
* see that file for details. */
enum {
DUMMY = 0x100,
#define TC_OPTIONS_TO_ENUM
#include "cmdline_def.h"
#undef TC_OPTIONS_TO_ENUM
};
static struct option tc_options[] = {
#define TC_OPTIONS_TO_STRUCT_OPTION
#include "cmdline_def.h"
#undef TC_OPTIONS_TO_STRUCT_OPTION
};
/**
* usage: Print a command-line help message.
*
* Parameters:
* None.
* Return value:
* None.
*/
static void usage(void)
{
int optwidth = 0;
#define TC_OPTIONS_TO_OPTWIDTH optwidth
#include "cmdline_def.h"
#undef TC_OPTIONS_TO_OPTWIDTH
version();
printf("\n");
printf("Usage: transcode [options...]\n");
printf("\n");
printf("Options:\n");
#define TC_OPTIONS_TO_HELP optwidth
#include "cmdline_def.h"
#undef TC_OPTIONS_TO_HELP
printf("\n");
printf("use tcmodinfo to discover module properties and configurable options.\n");
}
/**
* parse_cmdline: Parse all options on the transcode command line, storing
* appropriate values in the global "vob" data structure.
*
* Parameters:
* argc: Command line argument count.
* argv: Command line argument vector.
* vob: Global data structure.
* Return value:
* Nonzero on success, zero on error.
*/
int parse_cmdline(int argc, char **argv, vob_t *vob)
{
const char *shortopts;
int option;
#define TC_OPTIONS_TO_SHORTOPTS shortopts
#include "cmdline_def.h"
#undef TC_OPTIONS_TO_SHORTOPTS
while (-1 != (option = getopt_long_only(argc, argv, shortopts,
tc_options, NULL))
) {
switch (option) {
#define TC_OPTIONS_TO_CODE
#include "cmdline_def.h"
#undef TC_OPTIONS_TO_CODE
default:
short_usage: /* error-handling label */
fprintf(stderr, "'transcode -h | more' shows a list of available"
" command line options.\n");
return 0;
}
}
if (optind == 1)
goto short_usage;
#ifndef __APPLE__
if (optind < argc) {
int n;
tc_warn("unused command line argument detected (%d/%d)", optind, argc);
for (n = optind; n < argc; n++)
tc_warn("argc[%d]=%s (unused)", n, argv[n]);
}
#endif
return 1;
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/
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