cmdutils.c

   1 /*
   2  * Various utilities for command line tools
   3  * Copyright (c) 2000-2003 Fabrice Bellard
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #include <string.h>
  23 #include <stdlib.h>
  24 #include <errno.h>
  25
  26 #include "avformat.h"
  27 #include "cmdutils.h"
  28 #include "avstring.h"
  29 #include "version.h"
  30 #include "config.h"
  31
  32 #undef exit
  33
  34 void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
  35 {
  36     const OptionDef *po;
  37     int first;
  38
  39     first = 1;
  40     for(po = options; po->name != NULL; po++) {
  41         char buf[64];
  42         if ((po->flags & mask) == value) {
  43             if (first) {
  44                 printf("%s", msg);
  45                 first = 0;
  46             }
  47             av_strlcpy(buf, po->name, sizeof(buf));
  48             if (po->flags & HAS_ARG) {
  49                 av_strlcat(buf, " ", sizeof(buf));
  50                 av_strlcat(buf, po->argname, sizeof(buf));
  51             }
  52             printf("-%-17s  %s\n", buf, po->help);
  53         }
  54     }
  55 }
  56
  57 static const OptionDef* find_option(const OptionDef *po, const char *name){
  58     while (po->name != NULL) {
  59         if (!strcmp(name, po->name))
  60             break;
  61         po++;
  62     }
  63     return po;
  64 }
  65
  66 void parse_options(int argc, char **argv, const OptionDef *options,
  67                    void (* parse_arg_function)(const char*))
  68 {
  69     const char *opt, *arg;
  70     int optindex, handleoptions=1;
  71     const OptionDef *po;
  72
  73     /* parse options */
  74     optindex = 1;
  75     while (optindex < argc) {
  76         opt = argv[optindex++];
  77
  78         if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
  79           if (opt[1] == '-' && opt[2] == '\0') {
  80             handleoptions = 0;
  81             continue;
  82           }
  83             po= find_option(options, opt + 1);
  84             if (!po->name)
  85                 po= find_option(options, "default");
  86             if (!po->name) {
  87 unknown_opt:
  88                 fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
  89                 exit(1);
  90             }
  91             arg = NULL;
  92             if (po->flags & HAS_ARG) {
  93                 arg = argv[optindex++];
  94                 if (!arg) {
  95                     fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);
  96                     exit(1);
  97                 }
  98             }
  99             if (po->flags & OPT_STRING) {
 100                 char *str;
 101                 str = av_strdup(arg);
 102                 *po->u.str_arg = str;
 103             } else if (po->flags & OPT_BOOL) {
 104                 *po->u.int_arg = 1;
 105             } else if (po->flags & OPT_INT) {
 106                 *po->u.int_arg = atoi(arg);
 107             } else if (po->flags & OPT_INT64) {
 108                 *po->u.int64_arg = strtoll(arg, (char **)NULL, 10);
 109             } else if (po->flags & OPT_FLOAT) {
 110                 *po->u.float_arg = atof(arg);
 111             } else if (po->flags & OPT_FUNC2) {
 112                 if(po->u.func2_arg(opt+1, arg)<0)
 113                     goto unknown_opt;
 114             } else {
 115                 po->u.func_arg(arg);
 116             }
 117         } else {
 118             if (parse_arg_function)
 119                 parse_arg_function(opt);
 120         }
 121     }
 122 }
 123
 124 void print_error(const char *filename, int err)
 125 {
 126     switch(err) {
 127     case AVERROR_NUMEXPECTED:
 128         fprintf(stderr, "%s: Incorrect image filename syntax.\n"
 129                 "Use '%%d' to specify the image number:\n"
 130                 "  for img1.jpg, img2.jpg, ..., use 'img%%d.jpg';\n"
 131                 "  for img001.jpg, img002.jpg, ..., use 'img%%03d.jpg'.\n",
 132                 filename);
 133         break;
 134     case AVERROR_INVALIDDATA:
 135         fprintf(stderr, "%s: Error while parsing header\n", filename);
 136         break;
 137     case AVERROR_NOFMT:
 138         fprintf(stderr, "%s: Unknown format\n", filename);
 139         break;
 140     case AVERROR(EIO):
 141         fprintf(stderr, "%s: I/O error occured\n"
 142                 "Usually that means that input file is truncated and/or corrupted.\n",
 143                 filename);
 144         break;
 145     case AVERROR(ENOMEM):
 146         fprintf(stderr, "%s: memory allocation error occured\n", filename);
 147         break;
 148     case AVERROR(ENOENT):
 149         fprintf(stderr, "%s: no such file or directory\n", filename);
 150         break;
 151     default:
 152         fprintf(stderr, "%s: Error while opening file\n", filename);
 153         break;
 154     }
 155 }
 156
 157 void show_banner(const char *program_name, int program_birth_year)
 158 {
 159     fprintf(stderr, "%s version " FFMPEG_VERSION ", Copyright (c) %d-2008 Fabrice Bellard, et al.\n",
 160             program_name, program_birth_year);
 161     fprintf(stderr, "  configuration: " FFMPEG_CONFIGURATION "\n");
 162     fprintf(stderr, "  libavutil version: " AV_STRINGIFY(LIBAVUTIL_VERSION) "\n");
 163     fprintf(stderr, "  libavcodec version: " AV_STRINGIFY(LIBAVCODEC_VERSION) "\n");
 164     fprintf(stderr, "  libavformat version: " AV_STRINGIFY(LIBAVFORMAT_VERSION) "\n");
 165     fprintf(stderr, "  built on " __DATE__ " " __TIME__);
 166 #ifdef __GNUC__
 167     fprintf(stderr, ", gcc: " __VERSION__ "\n");
 168 #else
 169     fprintf(stderr, ", using a non-gcc compiler\n");
 170 #endif
 171 }
 172
 173 void show_version(const char *program_name) {
 174      /* TODO: add function interface to avutil and avformat */
 175     printf("%s " FFMPEG_VERSION "\n", program_name);
 176     printf("libavutil   %d\n"
 177            "libavcodec  %d\n"
 178            "libavformat %d\n",
 179            LIBAVUTIL_BUILD, avcodec_build(), LIBAVFORMAT_BUILD);
 180 }
 181
 182 void show_license(void)
 183 {
 184 #ifdef CONFIG_GPL
 185     printf(
 186     "FFmpeg is free software; you can redistribute it and/or modify\n"
 187     "it under the terms of the GNU General Public License as published by\n"
 188     "the Free Software Foundation; either version 2 of the License, or\n"
 189     "(at your option) any later version.\n"
 190     "\n"
 191     "FFmpeg is distributed in the hope that it will be useful,\n"
 192     "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
 193     "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
 194     "GNU General Public License for more details.\n"
 195     "\n"
 196     "You should have received a copy of the GNU General Public License\n"
 197     "along with FFmpeg; if not, write to the Free Software\n"
 198     "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
 199     );
 200 #else
 201     printf(
 202     "FFmpeg is free software; you can redistribute it and/or\n"
 203     "modify it under the terms of the GNU Lesser General Public\n"
 204     "License as published by the Free Software Foundation; either\n"
 205     "version 2.1 of the License, or (at your option) any later version.\n"
 206     "\n"
 207     "FFmpeg is distributed in the hope that it will be useful,\n"
 208     "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
 209     "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n"
 210     "Lesser General Public License for more details.\n"
 211     "\n"
 212     "You should have received a copy of the GNU Lesser General Public\n"
 213     "License along with FFmpeg; if not, write to the Free Software\n"
 214     "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
 215     );
 216 #endif
 217 }