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 #include <math.h>
  26
  27 #include "config.h"
  28 #include "libavformat/avformat.h"
  29 #include "libavfilter/avfilter.h"
  30 #include "libavdevice/avdevice.h"
  31 #include "libavutil/avstring.h"
  32 #include "cmdutils.h"
  33 #include "version.h"
  34 #ifdef CONFIG_NETWORK
  35 #include "libavformat/network.h"
  36 #endif
  37
  38 #undef exit
  39
  40
  41 double parse_number_or_die(const char *context, const char *numstr, int type, double min, double max)
  42 {
  43     char *tail;
  44     const char *error;
  45     double d = strtod(numstr, &tail);
  46     if (*tail)
  47         error= "Expected number for %s but found: %s\n";
  48     else if (d < min || d > max)
  49         error= "The value for %s was %s which is not within %f - %f\n";
  50     else if(type == OPT_INT64 && (int64_t)d != d)
  51         error= "Expected int64 for %s but found %s\n";
  52     else
  53         return d;
  54     fprintf(stderr, error, context, numstr, min, max);
  55     exit(1);
  56 }
  57
  58 int64_t parse_time_or_die(const char *context, const char *timestr, int is_duration)
  59 {
  60     int64_t us = parse_date(timestr, is_duration);
  61     if (us == INT64_MIN) {
  62         fprintf(stderr, "Invalid %s specification for %s: %s\n",
  63                 is_duration ? "duration" : "date", context, timestr);
  64         exit(1);
  65     }
  66     return us;
  67 }
  68
  69 void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
  70 {
  71     const OptionDef *po;
  72     int first;
  73
  74     first = 1;
  75     for(po = options; po->name != NULL; po++) {
  76         char buf[64];
  77         if ((po->flags & mask) == value) {
  78             if (first) {
  79                 printf("%s", msg);
  80                 first = 0;
  81             }
  82             av_strlcpy(buf, po->name, sizeof(buf));
  83             if (po->flags & HAS_ARG) {
  84                 av_strlcat(buf, " ", sizeof(buf));
  85                 av_strlcat(buf, po->argname, sizeof(buf));
  86             }
  87             printf("-%-17s  %s\n", buf, po->help);
  88         }
  89     }
  90 }
  91
  92 static const OptionDef* find_option(const OptionDef *po, const char *name){
  93     while (po->name != NULL) {
  94         if (!strcmp(name, po->name))
  95             break;
  96         po++;
  97     }
  98     return po;
  99 }
 100
 101 void parse_options(int argc, char **argv, const OptionDef *options,
 102                    void (* parse_arg_function)(const char*))
 103 {
 104     const char *opt, *arg;
 105     int optindex, handleoptions=1;
 106     const OptionDef *po;
 107
 108     /* parse options */
 109     optindex = 1;
 110     while (optindex < argc) {
 111         opt = argv[optindex++];
 112
 113         if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
 114           if (opt[1] == '-' && opt[2] == '\0') {
 115             handleoptions = 0;
 116             continue;
 117           }
 118             po= find_option(options, opt + 1);
 119             if (!po->name)
 120                 po= find_option(options, "default");
 121             if (!po->name) {
 122 unknown_opt:
 123                 fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
 124                 exit(1);
 125             }
 126             arg = NULL;
 127             if (po->flags & HAS_ARG) {
 128                 arg = argv[optindex++];
 129                 if (!arg) {
 130                     fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);
 131                     exit(1);
 132                 }
 133             }
 134             if (po->flags & OPT_STRING) {
 135                 char *str;
 136                 str = av_strdup(arg);
 137                 *po->u.str_arg = str;
 138             } else if (po->flags & OPT_BOOL) {
 139                 *po->u.int_arg = 1;
 140             } else if (po->flags & OPT_INT) {
 141                 *po->u.int_arg = parse_number_or_die(opt+1, arg, OPT_INT64, INT_MIN, INT_MAX);
 142             } else if (po->flags & OPT_INT64) {
 143                 *po->u.int64_arg = parse_number_or_die(opt+1, arg, OPT_INT64, INT64_MIN, INT64_MAX);
 144             } else if (po->flags & OPT_FLOAT) {
 145                 *po->u.float_arg = parse_number_or_die(opt+1, arg, OPT_FLOAT, -1.0/0.0, 1.0/0.0);
 146             } else if (po->flags & OPT_FUNC2) {
 147                 if(po->u.func2_arg(opt+1, arg)<0)
 148                     goto unknown_opt;
 149             } else {
 150                 po->u.func_arg(arg);
 151             }
 152             if(po->flags & OPT_EXIT)
 153                 exit(0);
 154         } else {
 155             if (parse_arg_function)
 156                 parse_arg_function(opt);
 157         }
 158     }
 159 }
 160
 161 void print_error(const char *filename, int err)
 162 {
 163     switch(err) {
 164     case AVERROR_NUMEXPECTED:
 165         fprintf(stderr, "%s: Incorrect image filename syntax.\n"
 166                 "Use '%%d' to specify the image number:\n"
 167                 "  for img1.jpg, img2.jpg, ..., use 'img%%d.jpg';\n"
 168                 "  for img001.jpg, img002.jpg, ..., use 'img%%03d.jpg'.\n",
 169                 filename);
 170         break;
 171     case AVERROR_INVALIDDATA:
 172         fprintf(stderr, "%s: Error while parsing header\n", filename);
 173         break;
 174     case AVERROR_NOFMT:
 175         fprintf(stderr, "%s: Unknown format\n", filename);
 176         break;
 177     case AVERROR(EIO):
 178         fprintf(stderr, "%s: I/O error occurred\n"
 179                 "Usually that means that input file is truncated and/or corrupted.\n",
 180                 filename);
 181         break;
 182     case AVERROR(ENOMEM):
 183         fprintf(stderr, "%s: memory allocation error occurred\n", filename);
 184         break;
 185     case AVERROR(ENOENT):
 186         fprintf(stderr, "%s: no such file or directory\n", filename);
 187         break;
 188 #ifdef CONFIG_NETWORK
 189     case AVERROR(FF_NETERROR(EPROTONOSUPPORT)):
 190         fprintf(stderr, "%s: Unsupported network protocol\n", filename);
 191         break;
 192 #endif
 193     default:
 194         fprintf(stderr, "%s: Error while opening file\n", filename);
 195         break;
 196     }
 197 }
 198
 199 void show_banner(void)
 200 {
 201     fprintf(stderr, "%s version " FFMPEG_VERSION ", Copyright (c) %d-2008 Fabrice Bellard, et al.\n",
 202             program_name, program_birth_year);
 203     fprintf(stderr, "  configuration: " FFMPEG_CONFIGURATION "\n");
 204     fprintf(stderr, "  libavutil version: " AV_STRINGIFY(LIBAVUTIL_VERSION) "\n");
 205     fprintf(stderr, "  libavcodec version: " AV_STRINGIFY(LIBAVCODEC_VERSION) "\n");
 206     fprintf(stderr, "  libavformat version: " AV_STRINGIFY(LIBAVFORMAT_VERSION) "\n");
 207     fprintf(stderr, "  libavdevice version: " AV_STRINGIFY(LIBAVDEVICE_VERSION) "\n");
 208 #if ENABLE_AVFILTER
 209     fprintf(stderr, "  libavfilter version: " AV_STRINGIFY(LIBAVFILTER_VERSION) "\n");
 210 #endif
 211     fprintf(stderr, "  built on " __DATE__ " " __TIME__);
 212 #ifdef __GNUC__
 213     fprintf(stderr, ", gcc: " __VERSION__ "\n");
 214 #else
 215     fprintf(stderr, ", using a non-gcc compiler\n");
 216 #endif
 217 }
 218
 219 void show_version(void) {
 220      /* TODO: add function interface to avutil and avformat avdevice*/
 221     printf("%s " FFMPEG_VERSION "\n", program_name);
 222     printf("libavutil   %d\n"
 223            "libavcodec  %d\n"
 224            "libavformat %d\n"
 225            "libavdevice %d\n",
 226            LIBAVUTIL_BUILD, avcodec_build(), LIBAVFORMAT_BUILD, LIBAVDEVICE_BUILD);
 227 }
 228
 229 void show_license(void)
 230 {
 231 #ifdef CONFIG_NONFREE
 232     printf(
 233     "This version of %s has nonfree parts compiled in.\n"
 234     "Therefore it is not legally redistributable.\n",
 235     program_name
 236     );
 237 #elif CONFIG_GPL
 238     printf(
 239     "%s is free software; you can redistribute it and/or modify\n"
 240     "it under the terms of the GNU General Public License as published by\n"
 241     "the Free Software Foundation; either version 2 of the License, or\n"
 242     "(at your option) any later version.\n"
 243     "\n"
 244     "%s is distributed in the hope that it will be useful,\n"
 245     "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
 246     "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
 247     "GNU General Public License for more details.\n"
 248     "\n"
 249     "You should have received a copy of the GNU General Public License\n"
 250     "along with %s; if not, write to the Free Software\n"
 251     "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
 252     program_name, program_name, program_name
 253     );
 254 #else
 255     printf(
 256     "%s is free software; you can redistribute it and/or\n"
 257     "modify it under the terms of the GNU Lesser General Public\n"
 258     "License as published by the Free Software Foundation; either\n"
 259     "version 2.1 of the License, or (at your option) any later version.\n"
 260     "\n"
 261     "%s is distributed in the hope that it will be useful,\n"
 262     "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
 263     "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n"
 264     "Lesser General Public License for more details.\n"
 265     "\n"
 266     "You should have received a copy of the GNU Lesser General Public\n"
 267     "License along with %s; if not, write to the Free Software\n"
 268     "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
 269     program_name, program_name, program_name
 270     );
 271 #endif
 272 }
 273
 274 void show_formats(void)
 275 {
 276     AVInputFormat *ifmt=NULL;
 277     AVOutputFormat *ofmt=NULL;
 278     URLProtocol *up=NULL;
 279     AVCodec *p=NULL, *p2;
 280     AVBitStreamFilter *bsf=NULL;
 281     const char *last_name;
 282
 283     printf("File formats:\n");
 284     last_name= "000";
 285     for(;;){
 286         int decode=0;
 287         int encode=0;
 288         const char *name=NULL;
 289         const char *long_name=NULL;
 290
 291         while((ofmt= av_oformat_next(ofmt))) {
 292             if((name == NULL || strcmp(ofmt->name, name)<0) &&
 293                 strcmp(ofmt->name, last_name)>0){
 294                 name= ofmt->name;
 295                 long_name= ofmt->long_name;
 296                 encode=1;
 297             }
 298         }
 299         while((ifmt= av_iformat_next(ifmt))) {
 300             if((name == NULL || strcmp(ifmt->name, name)<0) &&
 301                 strcmp(ifmt->name, last_name)>0){
 302                 name= ifmt->name;
 303                 long_name= ifmt->long_name;
 304                 encode=0;
 305             }
 306             if(name && strcmp(ifmt->name, name)==0)
 307                 decode=1;
 308         }
 309         if(name==NULL)
 310             break;
 311         last_name= name;
 312
 313         printf(
 314             " %s%s %-15s %s\n",
 315             decode ? "D":" ",
 316             encode ? "E":" ",
 317             name,
 318             long_name ? long_name:" ");
 319     }
 320     printf("\n");
 321
 322     printf("Codecs:\n");
 323     last_name= "000";
 324     for(;;){
 325         int decode=0;
 326         int encode=0;
 327         int cap=0;
 328         const char *type_str;
 329
 330         p2=NULL;
 331         while((p= av_codec_next(p))) {
 332             if((p2==NULL || strcmp(p->name, p2->name)<0) &&
 333                 strcmp(p->name, last_name)>0){
 334                 p2= p;
 335                 decode= encode= cap=0;
 336             }
 337             if(p2 && strcmp(p->name, p2->name)==0){
 338                 if(p->decode) decode=1;
 339                 if(p->encode) encode=1;
 340                 cap |= p->capabilities;
 341             }
 342         }
 343         if(p2==NULL)
 344             break;
 345         last_name= p2->name;
 346
 347         switch(p2->type) {
 348         case CODEC_TYPE_VIDEO:
 349             type_str = "V";
 350             break;
 351         case CODEC_TYPE_AUDIO:
 352             type_str = "A";
 353             break;
 354         case CODEC_TYPE_SUBTITLE:
 355             type_str = "S";
 356             break;
 357         default:
 358             type_str = "?";
 359             break;
 360         }
 361         printf(
 362             " %s%s%s%s%s%s %-15s %s",
 363             decode ? "D": (/*p2->decoder ? "d":*/" "),
 364             encode ? "E":" ",
 365             type_str,
 366             cap & CODEC_CAP_DRAW_HORIZ_BAND ? "S":" ",
 367             cap & CODEC_CAP_DR1 ? "D":" ",
 368             cap & CODEC_CAP_TRUNCATED ? "T":" ",
 369             p2->name,
 370             p2->long_name ? p2->long_name : "");
 371        /* if(p2->decoder && decode==0)
 372             printf(" use %s for decoding", p2->decoder->name);*/
 373         printf("\n");
 374     }
 375     printf("\n");
 376
 377     printf("Bitstream filters:\n");
 378     while((bsf = av_bitstream_filter_next(bsf)))
 379         printf(" %s", bsf->name);
 380     printf("\n");
 381
 382     printf("Supported file protocols:\n");
 383     while((up = av_protocol_next(up)))
 384         printf(" %s:", up->name);
 385     printf("\n");
 386
 387     printf("Frame size, frame rate abbreviations:\n ntsc pal qntsc qpal sntsc spal film ntsc-film sqcif qcif cif 4cif\n");
 388     printf("\n");
 389     printf(
 390 "Note, the names of encoders and decoders do not always match, so there are\n"
 391 "several cases where the above table shows encoder only or decoder only entries\n"
 392 "even though both encoding and decoding are supported. For example, the h263\n"
 393 "decoder corresponds to the h263 and h263p encoders, for file formats it is even\n"
 394 "worse.\n");
 395 }