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 FFmpeg has nonfree parts compiled in.\n"
 234     "Therefore it is not legally redistributable.\n"
 235     );
 236 #elif CONFIG_GPL
 237     printf(
 238     "FFmpeg is free software; you can redistribute it and/or modify\n"
 239     "it under the terms of the GNU General Public License as published by\n"
 240     "the Free Software Foundation; either version 2 of the License, or\n"
 241     "(at your option) any later version.\n"
 242     "\n"
 243     "FFmpeg is distributed in the hope that it will be useful,\n"
 244     "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
 245     "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
 246     "GNU General Public License for more details.\n"
 247     "\n"
 248     "You should have received a copy of the GNU General Public License\n"
 249     "along with FFmpeg; if not, write to the Free Software\n"
 250     "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
 251     );
 252 #else
 253     printf(
 254     "FFmpeg is free software; you can redistribute it and/or\n"
 255     "modify it under the terms of the GNU Lesser General Public\n"
 256     "License as published by the Free Software Foundation; either\n"
 257     "version 2.1 of the License, or (at your option) any later version.\n"
 258     "\n"
 259     "FFmpeg is distributed in the hope that it will be useful,\n"
 260     "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
 261     "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n"
 262     "Lesser General Public License for more details.\n"
 263     "\n"
 264     "You should have received a copy of the GNU Lesser General Public\n"
 265     "License along with FFmpeg; if not, write to the Free Software\n"
 266     "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n"
 267     );
 268 #endif
 269 }
 270
 271 void show_formats(void)
 272 {
 273     AVInputFormat *ifmt=NULL;
 274     AVOutputFormat *ofmt=NULL;
 275     URLProtocol *up=NULL;
 276     AVCodec *p=NULL, *p2;
 277     AVBitStreamFilter *bsf=NULL;
 278     const char *last_name;
 279
 280     printf("File formats:\n");
 281     last_name= "000";
 282     for(;;){
 283         int decode=0;
 284         int encode=0;
 285         const char *name=NULL;
 286         const char *long_name=NULL;
 287
 288         while((ofmt= av_oformat_next(ofmt))) {
 289             if((name == NULL || strcmp(ofmt->name, name)<0) &&
 290                 strcmp(ofmt->name, last_name)>0){
 291                 name= ofmt->name;
 292                 long_name= ofmt->long_name;
 293                 encode=1;
 294             }
 295         }
 296         while((ifmt= av_iformat_next(ifmt))) {
 297             if((name == NULL || strcmp(ifmt->name, name)<0) &&
 298                 strcmp(ifmt->name, last_name)>0){
 299                 name= ifmt->name;
 300                 long_name= ifmt->long_name;
 301                 encode=0;
 302             }
 303             if(name && strcmp(ifmt->name, name)==0)
 304                 decode=1;
 305         }
 306         if(name==NULL)
 307             break;
 308         last_name= name;
 309
 310         printf(
 311             " %s%s %-15s %s\n",
 312             decode ? "D":" ",
 313             encode ? "E":" ",
 314             name,
 315             long_name ? long_name:" ");
 316     }
 317     printf("\n");
 318
 319     printf("Codecs:\n");
 320     last_name= "000";
 321     for(;;){
 322         int decode=0;
 323         int encode=0;
 324         int cap=0;
 325         const char *type_str;
 326
 327         p2=NULL;
 328         while((p= av_codec_next(p))) {
 329             if((p2==NULL || strcmp(p->name, p2->name)<0) &&
 330                 strcmp(p->name, last_name)>0){
 331                 p2= p;
 332                 decode= encode= cap=0;
 333             }
 334             if(p2 && strcmp(p->name, p2->name)==0){
 335                 if(p->decode) decode=1;
 336                 if(p->encode) encode=1;
 337                 cap |= p->capabilities;
 338             }
 339         }
 340         if(p2==NULL)
 341             break;
 342         last_name= p2->name;
 343
 344         switch(p2->type) {
 345         case CODEC_TYPE_VIDEO:
 346             type_str = "V";
 347             break;
 348         case CODEC_TYPE_AUDIO:
 349             type_str = "A";
 350             break;
 351         case CODEC_TYPE_SUBTITLE:
 352             type_str = "S";
 353             break;
 354         default:
 355             type_str = "?";
 356             break;
 357         }
 358         printf(
 359             " %s%s%s%s%s%s %-15s %s",
 360             decode ? "D": (/*p2->decoder ? "d":*/" "),
 361             encode ? "E":" ",
 362             type_str,
 363             cap & CODEC_CAP_DRAW_HORIZ_BAND ? "S":" ",
 364             cap & CODEC_CAP_DR1 ? "D":" ",
 365             cap & CODEC_CAP_TRUNCATED ? "T":" ",
 366             p2->name,
 367             p2->long_name ? p2->long_name : "");
 368        /* if(p2->decoder && decode==0)
 369             printf(" use %s for decoding", p2->decoder->name);*/
 370         printf("\n");
 371     }
 372     printf("\n");
 373
 374     printf("Bitstream filters:\n");
 375     while((bsf = av_bitstream_filter_next(bsf)))
 376         printf(" %s", bsf->name);
 377     printf("\n");
 378
 379     printf("Supported file protocols:\n");
 380     while((up = av_protocol_next(up)))
 381         printf(" %s:", up->name);
 382     printf("\n");
 383
 384     printf("Frame size, frame rate abbreviations:\n ntsc pal qntsc qpal sntsc spal film ntsc-film sqcif qcif cif 4cif\n");
 385     printf("\n");
 386     printf(
 387 "Note, the names of encoders and decoders do not always match, so there are\n"
 388 "several cases where the above table shows encoder only or decoder only entries\n"
 389 "even though both encoding and decoding are supported. For example, the h263\n"
 390 "decoder corresponds to the h263 and h263p encoders, for file formats it is even\n"
 391 "worse.\n");
 392 }