/* * madplay - MPEG audio decoder and player * Copyright (C) 2000-2004 Robert Leslie * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA * * $Id: madplay.c,v 1.85 2004/02/17 02:26:43 rob Exp $ */# ifdef HAVE_CONFIG_H#  include "config.h"# endif# include "global.h"/* include this first to avoid conflicts with MinGW __argc et al. */# include "getopt.h"# include <locale.h># include <stdio.h># include <stdarg.h># include <stdlib.h># include <string.h># ifdef HAVE_ASSERT_H#  include <assert.h># endif# ifdef HAVE_UNISTD_H#  include <unistd.h># endif# ifdef HAVE_FCNTL_H#  include <fcntl.h># endif# include <ctype.h>//# include <mad.h># include "mad.h"# include "gettext.h"# include "audio.h"# include "player.h"# define FADE_DEFAULT	"0:05"# if defined(EXPERIMENTAL)static int external_mix;static int experimental;# endifstaticstruct option const options[] = {  { "adjust-volume",	required_argument,	0,		 'A' },  { "amplify",		required_argument,	0,		 'a' },  { "ancillary-output",	required_argument,	0,		-'a' },  { "attenuate",	required_argument,	0,		 'a' },  { "bit-depth",	required_argument,	0,		 'b' },  { "display-time",	required_argument,	0,		-'t' },  { "downsample",	no_argument,		0,		-'d' },  { "fade-in",		optional_argument,	0,		-'i' },  { "help",		no_argument,		0,		 'h' },  { "ignore-crc",	no_argument,		0,		 'i' },  { "left",		no_argument,		0,		 '1' },  { "license",		no_argument,		0,		-'l' },  { "mono",		no_argument,		0,		 'm' },  { "no-dither",	no_argument,		0,		 'd' },  { "output",		required_argument,	0,		 'o' },  { "pre-amp",		required_argument,	0,		 'a' },  { "quiet",		no_argument,		0,		 'q' },  { "repeat",		optional_argument,	0,		 'r' },  { "replay-gain",	optional_argument,	0,		 'G' },  { "right",		no_argument,		0,		 '2' },  { "sample-rate",	required_argument,	0,		 'R' },  { "show-tags-only",	no_argument,		0,		 'T' },  { "shuffle",		no_argument,		0,		 'z' },  { "start",		required_argument,	0,		 's' },  { "stereo",		no_argument,		0,		 'S' },  { "time",		required_argument,	0,		 't' },  { "verbose",		no_argument,		0,		 'v' },  { "version",		no_argument,		0,		 'V' },  { "very-quiet",	no_argument,		0,		 'Q' },# if defined(USE_TTY)  { "tty-control",	no_argument,		0,		-'c' },  { "no-tty-control",	no_argument,		0,		-'C' },# endif# if 0  { "cross-fade",	no_argument,		0,		 'x' },  { "fade-out",		optional_argument,	0,		-'o' },  { "gap",		required_argument,	0,		 'g' },# endif# if defined(EXPERIMENTAL)  { "external-mix",	no_argument,		&external_mix,	  1  },  { "experimental",	no_argument,		&experimental,	  1  },# endif  { 0 }};char const *argv0;# define EPUTS(str)	fputs(str, stream)# undef EPUTS/* * NAME:	verror() * DESCRIPTION:	print error message with program title prefix */staticvoid verror(char const *message, va_list args){  fprintf(stderr, "%s: ", argv0);  vfprintf(stderr, message, args);  fputc('\n', stderr);}/* * NAME:	warn() * DESCRIPTION:	print warning message */staticvoid warn(char const *message, ...){  va_list args;  va_start(args, message);  verror(message, args);  va_end(args);}/* * NAME:	get_options() * DESCRIPTION:	parse command-line options or die */staticvoid get_options(int argc, char *argv[], struct player *player){  int opt, index;  int ttyset = 0, preamp = 0;  while ((opt = getopt_long(argc, argv,			    "vqQ"		/* verbosity options */			    "i"			/* decoding options */			    "o:b:R:da:A:G::"	/* audio output options */# if 0			    "g:x"# endif			    "12mS"		/* channel selection options */			    "s:t:zr::"		/* playback options */			    "TVh",		/* miscellaneous options */			    options, &index)) != -1) {    switch (opt) {     case 'o':      player->output.path = optarg;      player->output.command = audio_output(&player->output.path);      if (!ttyset)	player->options &= ~PLAYER_OPTION_TTYCONTROL;      break;    default:      assert(!"option handler");    }  }  if (optind == argc) {    exit(2);  }}/* * NAME:	main() * DESCRIPTION:	program entry point */int main(int argc, char *argv[]){  struct player player;  int result = 0;  argv0 = argv[0];
  /* ensure binary standard I/O */# if defined(_WIN32)  _setmode(_fileno(stdin),  _O_BINARY);  _setmode(_fileno(stdout), _O_BINARY);# endif
  /* internationalization support */# if defined(ENABLE_NLS)  setlocale(LC_ALL, "");  bindtextdomain(PACKAGE, LOCALEDIR);  textdomain(PACKAGE);# endif  /* initialize and get options */  player_init(&player);  get_options(argc, argv, &player);  /* main processing */  if (player.options & PLAYER_OPTION_CROSSFADE) {    if (!(player.options & PLAYER_OPTION_GAP))      warn(_("cross-fade ignored without gap"));    else if (mad_timer_sign(player.gap) >= 0)      warn(_("cross-fade ignored without negative gap"));  }  if (player.output.replay_gain & RGAIN_ENABLED) {    if (player.options & PLAYER_OPTION_IGNOREVOLADJ)      warn(_("volume adjustment ignored with Replay Gain enabled"));    else      player.options |= PLAYER_OPTION_IGNOREVOLADJ;  }  if ((player.options & PLAYER_OPTION_SHOWTAGSONLY) &&      player.repeat != 1) {    warn(_("ignoring repeat"));    player.repeat = 1;  }  /* make stop time absolute */  if (player.options & PLAYER_OPTION_TIMED)    mad_timer_add(&player.global_stop, player.global_start);  /* get default audio output module */  if (player.output.command == 0 &&      !(player.options & PLAYER_OPTION_SHOWTAGSONLY))    player.output.command = audio_output(0);# if defined(EXPERIMENTAL)  if (external_mix) {    player.options |= PLAYER_OPTION_EXTERNALMIX;    player.output.command = 0;  }  if (experimental)    player.options |= PLAYER_OPTION_EXPERIMENTAL;# endif  /* run the player */  if (player_run(&player, argc - optind, (char const **) &argv[optind]) == -1)    result = 4;  /* finish up */  player_finish(&player); //無返回值一個操作  return result;}