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 <stdint.h>
24 #include <stdlib.h>
25 #include <errno.h>
26 #include <math.h>
27
28 /* Include only the enabled headers since some compilers (namely, Sun
29 Studio) will not omit unused inline functions and create undefined
30 references to libraries that are not being built. */
31
32 #include "config.h"
33 #include "compat/va_copy.h"
34 #include "libavformat/avformat.h"
35 #include "libavfilter/avfilter.h"
36 #include "libavdevice/avdevice.h"
37 #include "libavresample/avresample.h"
38 #include "libswscale/swscale.h"
39 #include "libswresample/swresample.h"
40 #include "libpostproc/postprocess.h"
41 #include "libavutil/attributes.h"
42 #include "libavutil/avassert.h"
43 #include "libavutil/avstring.h"
44 #include "libavutil/bprint.h"
45 #include "libavutil/display.h"
46 #include "libavutil/mathematics.h"
47 #include "libavutil/imgutils.h"
48 #include "libavutil/libm.h"
49 #include "libavutil/parseutils.h"
50 #include "libavutil/pixdesc.h"
51 #include "libavutil/eval.h"
52 #include "libavutil/dict.h"
53 #include "libavutil/opt.h"
54 #include "libavutil/cpu.h"
55 #include "libavutil/ffversion.h"
56 #include "libavutil/version.h"
57 #include "cmdutils.h"
58 #if HAVE_SYS_RESOURCE_H
59 #include <sys/time.h>
60 #include <sys/resource.h>
61 #endif
62 #ifdef _WIN32
63 #include <windows.h>
64 #endif
65
66 static int init_report(const char *env);
67
68 AVDictionary *sws_dict;
69 AVDictionary *swr_opts;
70 AVDictionary *format_opts, *codec_opts, *resample_opts;
71
72 static FILE *report_file;
73 static int report_file_level = AV_LOG_DEBUG;
74 int hide_banner = 0;
75
76 enum show_muxdemuxers {
77 SHOW_DEFAULT,
78 SHOW_DEMUXERS,
79 SHOW_MUXERS,
80 };
81
init_opts(void)82 void init_opts(void)
83 {
84 av_dict_set(&sws_dict, "flags", "bicubic", 0);
85 }
86
uninit_opts(void)87 void uninit_opts(void)
88 {
89 av_dict_free(&swr_opts);
90 av_dict_free(&sws_dict);
91 av_dict_free(&format_opts);
92 av_dict_free(&codec_opts);
93 av_dict_free(&resample_opts);
94 }
95
log_callback_help(void * ptr,int level,const char * fmt,va_list vl)96 void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
97 {
98 vfprintf(stdout, fmt, vl);
99 }
100
log_callback_report(void * ptr,int level,const char * fmt,va_list vl)101 static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
102 {
103 va_list vl2;
104 char line[1024];
105 static int print_prefix = 1;
106
107 va_copy(vl2, vl);
108 av_log_default_callback(ptr, level, fmt, vl);
109 av_log_format_line(ptr, level, fmt, vl2, line, sizeof(line), &print_prefix);
110 va_end(vl2);
111 if (report_file_level >= level) {
112 fputs(line, report_file);
113 fflush(report_file);
114 }
115 }
116
init_dynload(void)117 void init_dynload(void)
118 {
119 #if HAVE_SETDLLDIRECTORY && defined(_WIN32)
120 /* Calling SetDllDirectory with the empty string (but not NULL) removes the
121 * current working directory from the DLL search path as a security pre-caution. */
122 SetDllDirectory("");
123 #endif
124 }
125
126 static void (*program_exit)(int ret);
127
register_exit(void (* cb)(int ret))128 void register_exit(void (*cb)(int ret))
129 {
130 program_exit = cb;
131 }
132
exit_program(int ret)133 void exit_program(int ret)
134 {
135 if (program_exit)
136 program_exit(ret);
137
138 exit(ret);
139 }
140
parse_number_or_die(const char * context,const char * numstr,int type,double min,double max)141 double parse_number_or_die(const char *context, const char *numstr, int type,
142 double min, double max)
143 {
144 char *tail;
145 const char *error;
146 double d = av_strtod(numstr, &tail);
147 if (*tail)
148 error = "Expected number for %s but found: %s\n";
149 else if (d < min || d > max)
150 error = "The value for %s was %s which is not within %f - %f\n";
151 else if (type == OPT_INT64 && (int64_t)d != d)
152 error = "Expected int64 for %s but found %s\n";
153 else if (type == OPT_INT && (int)d != d)
154 error = "Expected int for %s but found %s\n";
155 else
156 return d;
157 av_log(NULL, AV_LOG_FATAL, error, context, numstr, min, max);
158 exit_program(1);
159 return 0;
160 }
161
parse_time_or_die(const char * context,const char * timestr,int is_duration)162 int64_t parse_time_or_die(const char *context, const char *timestr,
163 int is_duration)
164 {
165 int64_t us;
166 if (av_parse_time(&us, timestr, is_duration) < 0) {
167 av_log(NULL, AV_LOG_FATAL, "Invalid %s specification for %s: %s\n",
168 is_duration ? "duration" : "date", context, timestr);
169 exit_program(1);
170 }
171 return us;
172 }
173
show_help_options(const OptionDef * options,const char * msg,int req_flags,int rej_flags,int alt_flags)174 void show_help_options(const OptionDef *options, const char *msg, int req_flags,
175 int rej_flags, int alt_flags)
176 {
177 const OptionDef *po;
178 int first;
179
180 first = 1;
181 for (po = options; po->name; po++) {
182 char buf[128];
183
184 if (((po->flags & req_flags) != req_flags) ||
185 (alt_flags && !(po->flags & alt_flags)) ||
186 (po->flags & rej_flags))
187 continue;
188
189 if (first) {
190 printf("%s\n", msg);
191 first = 0;
192 }
193 av_strlcpy(buf, po->name, sizeof(buf));
194 if (po->argname) {
195 av_strlcat(buf, " ", sizeof(buf));
196 av_strlcat(buf, po->argname, sizeof(buf));
197 }
198 printf("-%-17s %s\n", buf, po->help);
199 }
200 printf("\n");
201 }
202
show_help_children(const AVClass * class,int flags)203 void show_help_children(const AVClass *class, int flags)
204 {
205 void *iter = NULL;
206 const AVClass *child;
207 if (class->option) {
208 av_opt_show2(&class, NULL, flags, 0);
209 printf("\n");
210 }
211
212 while (child = av_opt_child_class_iterate(class, &iter))
213 show_help_children(child, flags);
214 }
215
find_option(const OptionDef * po,const char * name)216 static const OptionDef *find_option(const OptionDef *po, const char *name)
217 {
218 while (po->name) {
219 const char *end;
220 if (av_strstart(name, po->name, &end) && (!*end || *end == ':'))
221 break;
222 po++;
223 }
224 return po;
225 }
226
227 /* _WIN32 means using the windows libc - cygwin doesn't define that
228 * by default. HAVE_COMMANDLINETOARGVW is true on cygwin, while
229 * it doesn't provide the actual command line via GetCommandLineW(). */
230 #if HAVE_COMMANDLINETOARGVW && defined(_WIN32)
231 #include <shellapi.h>
232 /* Will be leaked on exit */
233 static char** win32_argv_utf8 = NULL;
234 static int win32_argc = 0;
235
236 /**
237 * Prepare command line arguments for executable.
238 * For Windows - perform wide-char to UTF-8 conversion.
239 * Input arguments should be main() function arguments.
240 * @param argc_ptr Arguments number (including executable)
241 * @param argv_ptr Arguments list.
242 */
prepare_app_arguments(int * argc_ptr,char *** argv_ptr)243 static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
244 {
245 char *argstr_flat;
246 wchar_t **argv_w;
247 int i, buffsize = 0, offset = 0;
248
249 if (win32_argv_utf8) {
250 *argc_ptr = win32_argc;
251 *argv_ptr = win32_argv_utf8;
252 return;
253 }
254
255 win32_argc = 0;
256 argv_w = CommandLineToArgvW(GetCommandLineW(), &win32_argc);
257 if (win32_argc <= 0 || !argv_w)
258 return;
259
260 /* determine the UTF-8 buffer size (including NULL-termination symbols) */
261 for (i = 0; i < win32_argc; i++)
262 buffsize += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
263 NULL, 0, NULL, NULL);
264
265 win32_argv_utf8 = av_mallocz(sizeof(char *) * (win32_argc + 1) + buffsize);
266 argstr_flat = (char *)win32_argv_utf8 + sizeof(char *) * (win32_argc + 1);
267 if (!win32_argv_utf8) {
268 LocalFree(argv_w);
269 return;
270 }
271
272 for (i = 0; i < win32_argc; i++) {
273 win32_argv_utf8[i] = &argstr_flat[offset];
274 offset += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
275 &argstr_flat[offset],
276 buffsize - offset, NULL, NULL);
277 }
278 win32_argv_utf8[i] = NULL;
279 LocalFree(argv_w);
280
281 *argc_ptr = win32_argc;
282 *argv_ptr = win32_argv_utf8;
283 }
284 #else
prepare_app_arguments(int * argc_ptr,char *** argv_ptr)285 static inline void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
286 {
287 /* nothing to do */
288 }
289 #endif /* HAVE_COMMANDLINETOARGVW */
290
write_option(void * optctx,const OptionDef * po,const char * opt,const char * arg)291 static int write_option(void *optctx, const OptionDef *po, const char *opt,
292 const char *arg)
293 {
294 /* new-style options contain an offset into optctx, old-style address of
295 * a global var*/
296 void *dst = po->flags & (OPT_OFFSET | OPT_SPEC) ?
297 (uint8_t *)optctx + po->u.off : po->u.dst_ptr;
298 int *dstcount;
299
300 if (po->flags & OPT_SPEC) {
301 SpecifierOpt **so = dst;
302 char *p = strchr(opt, ':');
303 char *str;
304
305 dstcount = (int *)(so + 1);
306 *so = grow_array(*so, sizeof(**so), dstcount, *dstcount + 1);
307 str = av_strdup(p ? p + 1 : "");
308 if (!str)
309 return AVERROR(ENOMEM);
310 (*so)[*dstcount - 1].specifier = str;
311 dst = &(*so)[*dstcount - 1].u;
312 }
313
314 if (po->flags & OPT_STRING) {
315 char *str;
316 str = av_strdup(arg);
317 av_freep(dst);
318 if (!str)
319 return AVERROR(ENOMEM);
320 *(char **)dst = str;
321 } else if (po->flags & OPT_BOOL || po->flags & OPT_INT) {
322 *(int *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
323 } else if (po->flags & OPT_INT64) {
324 *(int64_t *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
325 } else if (po->flags & OPT_TIME) {
326 *(int64_t *)dst = parse_time_or_die(opt, arg, 1);
327 } else if (po->flags & OPT_FLOAT) {
328 *(float *)dst = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
329 } else if (po->flags & OPT_DOUBLE) {
330 *(double *)dst = parse_number_or_die(opt, arg, OPT_DOUBLE, -INFINITY, INFINITY);
331 } else if (po->u.func_arg) {
332 int ret = po->u.func_arg(optctx, opt, arg);
333 if (ret < 0) {
334 av_log(NULL, AV_LOG_ERROR,
335 "Failed to set value '%s' for option '%s': %s\n",
336 arg, opt, av_err2str(ret));
337 return ret;
338 }
339 }
340 if (po->flags & OPT_EXIT)
341 exit_program(0);
342
343 return 0;
344 }
345
parse_option(void * optctx,const char * opt,const char * arg,const OptionDef * options)346 int parse_option(void *optctx, const char *opt, const char *arg,
347 const OptionDef *options)
348 {
349 const OptionDef *po;
350 int ret;
351
352 po = find_option(options, opt);
353 if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
354 /* handle 'no' bool option */
355 po = find_option(options, opt + 2);
356 if ((po->name && (po->flags & OPT_BOOL)))
357 arg = "0";
358 } else if (po->flags & OPT_BOOL)
359 arg = "1";
360
361 if (!po->name)
362 po = find_option(options, "default");
363 if (!po->name) {
364 av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt);
365 return AVERROR(EINVAL);
366 }
367 if (po->flags & HAS_ARG && !arg) {
368 av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'\n", opt);
369 return AVERROR(EINVAL);
370 }
371
372 ret = write_option(optctx, po, opt, arg);
373 if (ret < 0)
374 return ret;
375
376 return !!(po->flags & HAS_ARG);
377 }
378
parse_options(void * optctx,int argc,char ** argv,const OptionDef * options,void (* parse_arg_function)(void *,const char *))379 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
380 void (*parse_arg_function)(void *, const char*))
381 {
382 const char *opt;
383 int optindex, handleoptions = 1, ret;
384
385 /* perform system-dependent conversions for arguments list */
386 prepare_app_arguments(&argc, &argv);
387
388 /* parse options */
389 optindex = 1;
390 while (optindex < argc) {
391 opt = argv[optindex++];
392
393 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
394 if (opt[1] == '-' && opt[2] == '\0') {
395 handleoptions = 0;
396 continue;
397 }
398 opt++;
399
400 if ((ret = parse_option(optctx, opt, argv[optindex], options)) < 0)
401 exit_program(1);
402 optindex += ret;
403 } else {
404 if (parse_arg_function)
405 parse_arg_function(optctx, opt);
406 }
407 }
408 }
409
parse_optgroup(void * optctx,OptionGroup * g)410 int parse_optgroup(void *optctx, OptionGroup *g)
411 {
412 int i, ret;
413
414 av_log(NULL, AV_LOG_DEBUG, "Parsing a group of options: %s %s.\n",
415 g->group_def->name, g->arg);
416
417 for (i = 0; i < g->nb_opts; i++) {
418 Option *o = &g->opts[i];
419
420 if (g->group_def->flags &&
421 !(g->group_def->flags & o->opt->flags)) {
422 av_log(NULL, AV_LOG_ERROR, "Option %s (%s) cannot be applied to "
423 "%s %s -- you are trying to apply an input option to an "
424 "output file or vice versa. Move this option before the "
425 "file it belongs to.\n", o->key, o->opt->help,
426 g->group_def->name, g->arg);
427 return AVERROR(EINVAL);
428 }
429
430 av_log(NULL, AV_LOG_DEBUG, "Applying option %s (%s) with argument %s.\n",
431 o->key, o->opt->help, o->val);
432
433 ret = write_option(optctx, o->opt, o->key, o->val);
434 if (ret < 0)
435 return ret;
436 }
437
438 av_log(NULL, AV_LOG_DEBUG, "Successfully parsed a group of options.\n");
439
440 return 0;
441 }
442
locate_option(int argc,char ** argv,const OptionDef * options,const char * optname)443 int locate_option(int argc, char **argv, const OptionDef *options,
444 const char *optname)
445 {
446 const OptionDef *po;
447 int i;
448
449 for (i = 1; i < argc; i++) {
450 const char *cur_opt = argv[i];
451
452 if (*cur_opt++ != '-')
453 continue;
454
455 po = find_option(options, cur_opt);
456 if (!po->name && cur_opt[0] == 'n' && cur_opt[1] == 'o')
457 po = find_option(options, cur_opt + 2);
458
459 if ((!po->name && !strcmp(cur_opt, optname)) ||
460 (po->name && !strcmp(optname, po->name)))
461 return i;
462
463 if (!po->name || po->flags & HAS_ARG)
464 i++;
465 }
466 return 0;
467 }
468
dump_argument(const char * a)469 static void dump_argument(const char *a)
470 {
471 const unsigned char *p;
472
473 for (p = a; *p; p++)
474 if (!((*p >= '+' && *p <= ':') || (*p >= '@' && *p <= 'Z') ||
475 *p == '_' || (*p >= 'a' && *p <= 'z')))
476 break;
477 if (!*p) {
478 fputs(a, report_file);
479 return;
480 }
481 fputc('"', report_file);
482 for (p = a; *p; p++) {
483 if (*p == '\\' || *p == '"' || *p == '$' || *p == '`')
484 fprintf(report_file, "\\%c", *p);
485 else if (*p < ' ' || *p > '~')
486 fprintf(report_file, "\\x%02x", *p);
487 else
488 fputc(*p, report_file);
489 }
490 fputc('"', report_file);
491 }
492
check_options(const OptionDef * po)493 static void check_options(const OptionDef *po)
494 {
495 while (po->name) {
496 if (po->flags & OPT_PERFILE)
497 av_assert0(po->flags & (OPT_INPUT | OPT_OUTPUT));
498 po++;
499 }
500 }
501
parse_loglevel(int argc,char ** argv,const OptionDef * options)502 void parse_loglevel(int argc, char **argv, const OptionDef *options)
503 {
504 int idx = locate_option(argc, argv, options, "loglevel");
505 const char *env;
506
507 check_options(options);
508
509 if (!idx)
510 idx = locate_option(argc, argv, options, "v");
511 if (idx && argv[idx + 1])
512 opt_loglevel(NULL, "loglevel", argv[idx + 1]);
513 idx = locate_option(argc, argv, options, "report");
514 if ((env = getenv("FFREPORT")) || idx) {
515 init_report(env);
516 if (report_file) {
517 int i;
518 fprintf(report_file, "Command line:\n");
519 for (i = 0; i < argc; i++) {
520 dump_argument(argv[i]);
521 fputc(i < argc - 1 ? ' ' : '\n', report_file);
522 }
523 fflush(report_file);
524 }
525 }
526 idx = locate_option(argc, argv, options, "hide_banner");
527 if (idx)
528 hide_banner = 1;
529 }
530
opt_find(void * obj,const char * name,const char * unit,int opt_flags,int search_flags)531 static const AVOption *opt_find(void *obj, const char *name, const char *unit,
532 int opt_flags, int search_flags)
533 {
534 const AVOption *o = av_opt_find(obj, name, unit, opt_flags, search_flags);
535 if(o && !o->flags)
536 return NULL;
537 return o;
538 }
539
540 #define FLAGS (o->type == AV_OPT_TYPE_FLAGS && (arg[0]=='-' || arg[0]=='+')) ? AV_DICT_APPEND : 0
opt_default(void * optctx,const char * opt,const char * arg)541 int opt_default(void *optctx, const char *opt, const char *arg)
542 {
543 const AVOption *o;
544 int consumed = 0;
545 char opt_stripped[128];
546 const char *p;
547 const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class();
548 #if CONFIG_AVRESAMPLE
549 const AVClass *rc = avresample_get_class();
550 #endif
551 #if CONFIG_SWSCALE
552 const AVClass *sc = sws_get_class();
553 #endif
554 #if CONFIG_SWRESAMPLE
555 const AVClass *swr_class = swr_get_class();
556 #endif
557
558 if (!strcmp(opt, "debug") || !strcmp(opt, "fdebug"))
559 av_log_set_level(AV_LOG_DEBUG);
560
561 if (!(p = strchr(opt, ':')))
562 p = opt + strlen(opt);
563 av_strlcpy(opt_stripped, opt, FFMIN(sizeof(opt_stripped), p - opt + 1));
564
565 if ((o = opt_find(&cc, opt_stripped, NULL, 0,
566 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)) ||
567 ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') &&
568 (o = opt_find(&cc, opt + 1, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ)))) {
569 av_dict_set(&codec_opts, opt, arg, FLAGS);
570 consumed = 1;
571 }
572 if ((o = opt_find(&fc, opt, NULL, 0,
573 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
574 av_dict_set(&format_opts, opt, arg, FLAGS);
575 if (consumed)
576 av_log(NULL, AV_LOG_VERBOSE, "Routing option %s to both codec and muxer layer\n", opt);
577 consumed = 1;
578 }
579 #if CONFIG_SWSCALE
580 if (!consumed && (o = opt_find(&sc, opt, NULL, 0,
581 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
582 struct SwsContext *sws = sws_alloc_context();
583 int ret = av_opt_set(sws, opt, arg, 0);
584 sws_freeContext(sws);
585 if (!strcmp(opt, "srcw") || !strcmp(opt, "srch") ||
586 !strcmp(opt, "dstw") || !strcmp(opt, "dsth") ||
587 !strcmp(opt, "src_format") || !strcmp(opt, "dst_format")) {
588 av_log(NULL, AV_LOG_ERROR, "Directly using swscale dimensions/format options is not supported, please use the -s or -pix_fmt options\n");
589 return AVERROR(EINVAL);
590 }
591 if (ret < 0) {
592 av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
593 return ret;
594 }
595
596 av_dict_set(&sws_dict, opt, arg, FLAGS);
597
598 consumed = 1;
599 }
600 #else
601 if (!consumed && !strcmp(opt, "sws_flags")) {
602 av_log(NULL, AV_LOG_WARNING, "Ignoring %s %s, due to disabled swscale\n", opt, arg);
603 consumed = 1;
604 }
605 #endif
606 #if CONFIG_SWRESAMPLE
607 if (!consumed && (o=opt_find(&swr_class, opt, NULL, 0,
608 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
609 struct SwrContext *swr = swr_alloc();
610 int ret = av_opt_set(swr, opt, arg, 0);
611 swr_free(&swr);
612 if (ret < 0) {
613 av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
614 return ret;
615 }
616 av_dict_set(&swr_opts, opt, arg, FLAGS);
617 consumed = 1;
618 }
619 #endif
620 #if CONFIG_AVRESAMPLE
621 if ((o=opt_find(&rc, opt, NULL, 0,
622 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
623 av_dict_set(&resample_opts, opt, arg, FLAGS);
624 consumed = 1;
625 }
626 #endif
627
628 if (consumed)
629 return 0;
630 return AVERROR_OPTION_NOT_FOUND;
631 }
632
633 /*
634 * Check whether given option is a group separator.
635 *
636 * @return index of the group definition that matched or -1 if none
637 */
match_group_separator(const OptionGroupDef * groups,int nb_groups,const char * opt)638 static int match_group_separator(const OptionGroupDef *groups, int nb_groups,
639 const char *opt)
640 {
641 int i;
642
643 for (i = 0; i < nb_groups; i++) {
644 const OptionGroupDef *p = &groups[i];
645 if (p->sep && !strcmp(p->sep, opt))
646 return i;
647 }
648
649 return -1;
650 }
651
652 /*
653 * Finish parsing an option group.
654 *
655 * @param group_idx which group definition should this group belong to
656 * @param arg argument of the group delimiting option
657 */
finish_group(OptionParseContext * octx,int group_idx,const char * arg)658 static void finish_group(OptionParseContext *octx, int group_idx,
659 const char *arg)
660 {
661 OptionGroupList *l = &octx->groups[group_idx];
662 OptionGroup *g;
663
664 GROW_ARRAY(l->groups, l->nb_groups);
665 g = &l->groups[l->nb_groups - 1];
666
667 *g = octx->cur_group;
668 g->arg = arg;
669 g->group_def = l->group_def;
670 g->sws_dict = sws_dict;
671 g->swr_opts = swr_opts;
672 g->codec_opts = codec_opts;
673 g->format_opts = format_opts;
674 g->resample_opts = resample_opts;
675
676 codec_opts = NULL;
677 format_opts = NULL;
678 resample_opts = NULL;
679 sws_dict = NULL;
680 swr_opts = NULL;
681 init_opts();
682
683 memset(&octx->cur_group, 0, sizeof(octx->cur_group));
684 }
685
686 /*
687 * Add an option instance to currently parsed group.
688 */
add_opt(OptionParseContext * octx,const OptionDef * opt,const char * key,const char * val)689 static void add_opt(OptionParseContext *octx, const OptionDef *opt,
690 const char *key, const char *val)
691 {
692 int global = !(opt->flags & (OPT_PERFILE | OPT_SPEC | OPT_OFFSET));
693 OptionGroup *g = global ? &octx->global_opts : &octx->cur_group;
694
695 GROW_ARRAY(g->opts, g->nb_opts);
696 g->opts[g->nb_opts - 1].opt = opt;
697 g->opts[g->nb_opts - 1].key = key;
698 g->opts[g->nb_opts - 1].val = val;
699 }
700
init_parse_context(OptionParseContext * octx,const OptionGroupDef * groups,int nb_groups)701 static void init_parse_context(OptionParseContext *octx,
702 const OptionGroupDef *groups, int nb_groups)
703 {
704 static const OptionGroupDef global_group = { "global" };
705 int i;
706
707 memset(octx, 0, sizeof(*octx));
708
709 octx->nb_groups = nb_groups;
710 octx->groups = av_mallocz_array(octx->nb_groups, sizeof(*octx->groups));
711 if (!octx->groups)
712 exit_program(1);
713
714 for (i = 0; i < octx->nb_groups; i++)
715 octx->groups[i].group_def = &groups[i];
716
717 octx->global_opts.group_def = &global_group;
718 octx->global_opts.arg = "";
719
720 init_opts();
721 }
722
uninit_parse_context(OptionParseContext * octx)723 void uninit_parse_context(OptionParseContext *octx)
724 {
725 int i, j;
726
727 for (i = 0; i < octx->nb_groups; i++) {
728 OptionGroupList *l = &octx->groups[i];
729
730 for (j = 0; j < l->nb_groups; j++) {
731 av_freep(&l->groups[j].opts);
732 av_dict_free(&l->groups[j].codec_opts);
733 av_dict_free(&l->groups[j].format_opts);
734 av_dict_free(&l->groups[j].resample_opts);
735
736 av_dict_free(&l->groups[j].sws_dict);
737 av_dict_free(&l->groups[j].swr_opts);
738 }
739 av_freep(&l->groups);
740 }
741 av_freep(&octx->groups);
742
743 av_freep(&octx->cur_group.opts);
744 av_freep(&octx->global_opts.opts);
745
746 uninit_opts();
747 }
748
split_commandline(OptionParseContext * octx,int argc,char * argv[],const OptionDef * options,const OptionGroupDef * groups,int nb_groups)749 int split_commandline(OptionParseContext *octx, int argc, char *argv[],
750 const OptionDef *options,
751 const OptionGroupDef *groups, int nb_groups)
752 {
753 int optindex = 1;
754 int dashdash = -2;
755
756 /* perform system-dependent conversions for arguments list */
757 prepare_app_arguments(&argc, &argv);
758
759 init_parse_context(octx, groups, nb_groups);
760 av_log(NULL, AV_LOG_DEBUG, "Splitting the commandline.\n");
761
762 while (optindex < argc) {
763 const char *opt = argv[optindex++], *arg;
764 const OptionDef *po;
765 int ret;
766
767 av_log(NULL, AV_LOG_DEBUG, "Reading option '%s' ...", opt);
768
769 if (opt[0] == '-' && opt[1] == '-' && !opt[2]) {
770 dashdash = optindex;
771 continue;
772 }
773 /* unnamed group separators, e.g. output filename */
774 if (opt[0] != '-' || !opt[1] || dashdash+1 == optindex) {
775 finish_group(octx, 0, opt);
776 av_log(NULL, AV_LOG_DEBUG, " matched as %s.\n", groups[0].name);
777 continue;
778 }
779 opt++;
780
781 #define GET_ARG(arg) \
782 do { \
783 arg = argv[optindex++]; \
784 if (!arg) { \
785 av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'.\n", opt);\
786 return AVERROR(EINVAL); \
787 } \
788 } while (0)
789
790 /* named group separators, e.g. -i */
791 if ((ret = match_group_separator(groups, nb_groups, opt)) >= 0) {
792 GET_ARG(arg);
793 finish_group(octx, ret, arg);
794 av_log(NULL, AV_LOG_DEBUG, " matched as %s with argument '%s'.\n",
795 groups[ret].name, arg);
796 continue;
797 }
798
799 /* normal options */
800 po = find_option(options, opt);
801 if (po->name) {
802 if (po->flags & OPT_EXIT) {
803 /* optional argument, e.g. -h */
804 arg = argv[optindex++];
805 } else if (po->flags & HAS_ARG) {
806 GET_ARG(arg);
807 } else {
808 arg = "1";
809 }
810
811 add_opt(octx, po, opt, arg);
812 av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
813 "argument '%s'.\n", po->name, po->help, arg);
814 continue;
815 }
816
817 /* AVOptions */
818 if (argv[optindex]) {
819 ret = opt_default(NULL, opt, argv[optindex]);
820 if (ret >= 0) {
821 av_log(NULL, AV_LOG_DEBUG, " matched as AVOption '%s' with "
822 "argument '%s'.\n", opt, argv[optindex]);
823 optindex++;
824 continue;
825 } else if (ret != AVERROR_OPTION_NOT_FOUND) {
826 av_log(NULL, AV_LOG_ERROR, "Error parsing option '%s' "
827 "with argument '%s'.\n", opt, argv[optindex]);
828 return ret;
829 }
830 }
831
832 /* boolean -nofoo options */
833 if (opt[0] == 'n' && opt[1] == 'o' &&
834 (po = find_option(options, opt + 2)) &&
835 po->name && po->flags & OPT_BOOL) {
836 add_opt(octx, po, opt, "0");
837 av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
838 "argument 0.\n", po->name, po->help);
839 continue;
840 }
841
842 av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'.\n", opt);
843 return AVERROR_OPTION_NOT_FOUND;
844 }
845
846 if (octx->cur_group.nb_opts || codec_opts || format_opts || resample_opts)
847 av_log(NULL, AV_LOG_WARNING, "Trailing option(s) found in the "
848 "command: may be ignored.\n");
849
850 av_log(NULL, AV_LOG_DEBUG, "Finished splitting the commandline.\n");
851
852 return 0;
853 }
854
opt_cpuflags(void * optctx,const char * opt,const char * arg)855 int opt_cpuflags(void *optctx, const char *opt, const char *arg)
856 {
857 int ret;
858 unsigned flags = av_get_cpu_flags();
859
860 if ((ret = av_parse_cpu_caps(&flags, arg)) < 0)
861 return ret;
862
863 av_force_cpu_flags(flags);
864 return 0;
865 }
866
opt_loglevel(void * optctx,const char * opt,const char * arg)867 int opt_loglevel(void *optctx, const char *opt, const char *arg)
868 {
869 const struct { const char *name; int level; } log_levels[] = {
870 { "quiet" , AV_LOG_QUIET },
871 { "panic" , AV_LOG_PANIC },
872 { "fatal" , AV_LOG_FATAL },
873 { "error" , AV_LOG_ERROR },
874 { "warning", AV_LOG_WARNING },
875 { "info" , AV_LOG_INFO },
876 { "verbose", AV_LOG_VERBOSE },
877 { "debug" , AV_LOG_DEBUG },
878 { "trace" , AV_LOG_TRACE },
879 };
880 const char *token;
881 char *tail;
882 int flags = av_log_get_flags();
883 int level = av_log_get_level();
884 int cmd, i = 0;
885
886 av_assert0(arg);
887 while (*arg) {
888 token = arg;
889 if (*token == '+' || *token == '-') {
890 cmd = *token++;
891 } else {
892 cmd = 0;
893 }
894 if (!i && !cmd) {
895 flags = 0; /* missing relative prefix, build absolute value */
896 }
897 if (!strncmp(token, "repeat", 6)) {
898 if (cmd == '-') {
899 flags |= AV_LOG_SKIP_REPEATED;
900 } else {
901 flags &= ~AV_LOG_SKIP_REPEATED;
902 }
903 arg = token + 6;
904 } else if (!strncmp(token, "level", 5)) {
905 if (cmd == '-') {
906 flags &= ~AV_LOG_PRINT_LEVEL;
907 } else {
908 flags |= AV_LOG_PRINT_LEVEL;
909 }
910 arg = token + 5;
911 } else {
912 break;
913 }
914 i++;
915 }
916 if (!*arg) {
917 goto end;
918 } else if (*arg == '+') {
919 arg++;
920 } else if (!i) {
921 flags = av_log_get_flags(); /* level value without prefix, reset flags */
922 }
923
924 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
925 if (!strcmp(log_levels[i].name, arg)) {
926 level = log_levels[i].level;
927 goto end;
928 }
929 }
930
931 level = strtol(arg, &tail, 10);
932 if (*tail) {
933 av_log(NULL, AV_LOG_FATAL, "Invalid loglevel \"%s\". "
934 "Possible levels are numbers or:\n", arg);
935 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
936 av_log(NULL, AV_LOG_FATAL, "\"%s\"\n", log_levels[i].name);
937 exit_program(1);
938 }
939
940 end:
941 av_log_set_flags(flags);
942 av_log_set_level(level);
943 return 0;
944 }
945
expand_filename_template(AVBPrint * bp,const char * template,struct tm * tm)946 static void expand_filename_template(AVBPrint *bp, const char *template,
947 struct tm *tm)
948 {
949 int c;
950
951 while ((c = *(template++))) {
952 if (c == '%') {
953 if (!(c = *(template++)))
954 break;
955 switch (c) {
956 case 'p':
957 av_bprintf(bp, "%s", program_name);
958 break;
959 case 't':
960 av_bprintf(bp, "%04d%02d%02d-%02d%02d%02d",
961 tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
962 tm->tm_hour, tm->tm_min, tm->tm_sec);
963 break;
964 case '%':
965 av_bprint_chars(bp, c, 1);
966 break;
967 }
968 } else {
969 av_bprint_chars(bp, c, 1);
970 }
971 }
972 }
973
init_report(const char * env)974 static int init_report(const char *env)
975 {
976 char *filename_template = NULL;
977 char *key, *val;
978 int ret, count = 0;
979 int prog_loglevel, envlevel = 0;
980 time_t now;
981 struct tm *tm;
982 AVBPrint filename;
983
984 if (report_file) /* already opened */
985 return 0;
986 time(&now);
987 tm = localtime(&now);
988
989 while (env && *env) {
990 if ((ret = av_opt_get_key_value(&env, "=", ":", 0, &key, &val)) < 0) {
991 if (count)
992 av_log(NULL, AV_LOG_ERROR,
993 "Failed to parse FFREPORT environment variable: %s\n",
994 av_err2str(ret));
995 break;
996 }
997 if (*env)
998 env++;
999 count++;
1000 if (!strcmp(key, "file")) {
1001 av_free(filename_template);
1002 filename_template = val;
1003 val = NULL;
1004 } else if (!strcmp(key, "level")) {
1005 char *tail;
1006 report_file_level = strtol(val, &tail, 10);
1007 if (*tail) {
1008 av_log(NULL, AV_LOG_FATAL, "Invalid report file level\n");
1009 exit_program(1);
1010 }
1011 envlevel = 1;
1012 } else {
1013 av_log(NULL, AV_LOG_ERROR, "Unknown key '%s' in FFREPORT\n", key);
1014 }
1015 av_free(val);
1016 av_free(key);
1017 }
1018
1019 av_bprint_init(&filename, 0, AV_BPRINT_SIZE_AUTOMATIC);
1020 expand_filename_template(&filename,
1021 av_x_if_null(filename_template, "%p-%t.log"), tm);
1022 av_free(filename_template);
1023 if (!av_bprint_is_complete(&filename)) {
1024 av_log(NULL, AV_LOG_ERROR, "Out of memory building report file name\n");
1025 return AVERROR(ENOMEM);
1026 }
1027
1028 prog_loglevel = av_log_get_level();
1029 if (!envlevel)
1030 report_file_level = FFMAX(report_file_level, prog_loglevel);
1031
1032 report_file = fopen(filename.str, "w");
1033 if (!report_file) {
1034 int ret = AVERROR(errno);
1035 av_log(NULL, AV_LOG_ERROR, "Failed to open report \"%s\": %s\n",
1036 filename.str, strerror(errno));
1037 return ret;
1038 }
1039 av_log_set_callback(log_callback_report);
1040 av_log(NULL, AV_LOG_INFO,
1041 "%s started on %04d-%02d-%02d at %02d:%02d:%02d\n"
1042 "Report written to \"%s\"\n"
1043 "Log level: %d\n",
1044 program_name,
1045 tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
1046 tm->tm_hour, tm->tm_min, tm->tm_sec,
1047 filename.str, report_file_level);
1048 av_bprint_finalize(&filename, NULL);
1049 return 0;
1050 }
1051
opt_report(void * optctx,const char * opt,const char * arg)1052 int opt_report(void *optctx, const char *opt, const char *arg)
1053 {
1054 return init_report(NULL);
1055 }
1056
opt_max_alloc(void * optctx,const char * opt,const char * arg)1057 int opt_max_alloc(void *optctx, const char *opt, const char *arg)
1058 {
1059 char *tail;
1060 size_t max;
1061
1062 max = strtol(arg, &tail, 10);
1063 if (*tail) {
1064 av_log(NULL, AV_LOG_FATAL, "Invalid max_alloc \"%s\".\n", arg);
1065 exit_program(1);
1066 }
1067 av_max_alloc(max);
1068 return 0;
1069 }
1070
opt_timelimit(void * optctx,const char * opt,const char * arg)1071 int opt_timelimit(void *optctx, const char *opt, const char *arg)
1072 {
1073 #if HAVE_SETRLIMIT
1074 int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
1075 struct rlimit rl = { lim, lim + 1 };
1076 if (setrlimit(RLIMIT_CPU, &rl))
1077 perror("setrlimit");
1078 #else
1079 av_log(NULL, AV_LOG_WARNING, "-%s not implemented on this OS\n", opt);
1080 #endif
1081 return 0;
1082 }
1083
print_error(const char * filename,int err)1084 void print_error(const char *filename, int err)
1085 {
1086 char errbuf[128];
1087 const char *errbuf_ptr = errbuf;
1088
1089 if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
1090 errbuf_ptr = strerror(AVUNERROR(err));
1091 av_log(NULL, AV_LOG_ERROR, "%s: %s\n", filename, errbuf_ptr);
1092 }
1093
1094 static int warned_cfg = 0;
1095
1096 #define INDENT 1
1097 #define SHOW_VERSION 2
1098 #define SHOW_CONFIG 4
1099 #define SHOW_COPYRIGHT 8
1100
1101 #define PRINT_LIB_INFO(libname, LIBNAME, flags, level) \
1102 if (CONFIG_##LIBNAME) { \
1103 const char *indent = flags & INDENT? " " : ""; \
1104 if (flags & SHOW_VERSION) { \
1105 unsigned int version = libname##_version(); \
1106 av_log(NULL, level, \
1107 "%slib%-11s %2d.%3d.%3d / %2d.%3d.%3d\n", \
1108 indent, #libname, \
1109 LIB##LIBNAME##_VERSION_MAJOR, \
1110 LIB##LIBNAME##_VERSION_MINOR, \
1111 LIB##LIBNAME##_VERSION_MICRO, \
1112 AV_VERSION_MAJOR(version), AV_VERSION_MINOR(version),\
1113 AV_VERSION_MICRO(version)); \
1114 } \
1115 if (flags & SHOW_CONFIG) { \
1116 const char *cfg = libname##_configuration(); \
1117 if (strcmp(FFMPEG_CONFIGURATION, cfg)) { \
1118 if (!warned_cfg) { \
1119 av_log(NULL, level, \
1120 "%sWARNING: library configuration mismatch\n", \
1121 indent); \
1122 warned_cfg = 1; \
1123 } \
1124 av_log(NULL, level, "%s%-11s configuration: %s\n", \
1125 indent, #libname, cfg); \
1126 } \
1127 } \
1128 } \
1129
print_all_libs_info(int flags,int level)1130 static void print_all_libs_info(int flags, int level)
1131 {
1132 PRINT_LIB_INFO(avutil, AVUTIL, flags, level);
1133 PRINT_LIB_INFO(avcodec, AVCODEC, flags, level);
1134 PRINT_LIB_INFO(avformat, AVFORMAT, flags, level);
1135 PRINT_LIB_INFO(avdevice, AVDEVICE, flags, level);
1136 PRINT_LIB_INFO(avfilter, AVFILTER, flags, level);
1137 PRINT_LIB_INFO(avresample, AVRESAMPLE, flags, level);
1138 PRINT_LIB_INFO(swscale, SWSCALE, flags, level);
1139 PRINT_LIB_INFO(swresample, SWRESAMPLE, flags, level);
1140 PRINT_LIB_INFO(postproc, POSTPROC, flags, level);
1141 }
1142
print_program_info(int flags,int level)1143 static void print_program_info(int flags, int level)
1144 {
1145 const char *indent = flags & INDENT? " " : "";
1146
1147 av_log(NULL, level, "%s version " FFMPEG_VERSION, program_name);
1148 if (flags & SHOW_COPYRIGHT)
1149 av_log(NULL, level, " Copyright (c) %d-%d the FFmpeg developers",
1150 program_birth_year, CONFIG_THIS_YEAR);
1151 av_log(NULL, level, "\n");
1152 av_log(NULL, level, "%sbuilt with %s\n", indent, CC_IDENT);
1153
1154 av_log(NULL, level, "%sconfiguration: " FFMPEG_CONFIGURATION "\n", indent);
1155 }
1156
print_buildconf(int flags,int level)1157 static void print_buildconf(int flags, int level)
1158 {
1159 const char *indent = flags & INDENT ? " " : "";
1160 char str[] = { FFMPEG_CONFIGURATION };
1161 char *conflist, *remove_tilde, *splitconf;
1162
1163 // Change all the ' --' strings to '~--' so that
1164 // they can be identified as tokens.
1165 while ((conflist = strstr(str, " --")) != NULL) {
1166 conflist[0] = '~';
1167 }
1168
1169 // Compensate for the weirdness this would cause
1170 // when passing 'pkg-config --static'.
1171 while ((remove_tilde = strstr(str, "pkg-config~")) != NULL) {
1172 remove_tilde[sizeof("pkg-config~") - 2] = ' ';
1173 }
1174
1175 splitconf = strtok(str, "~");
1176 av_log(NULL, level, "\n%sconfiguration:\n", indent);
1177 while (splitconf != NULL) {
1178 av_log(NULL, level, "%s%s%s\n", indent, indent, splitconf);
1179 splitconf = strtok(NULL, "~");
1180 }
1181 }
1182
show_banner(int argc,char ** argv,const OptionDef * options)1183 void show_banner(int argc, char **argv, const OptionDef *options)
1184 {
1185 int idx = locate_option(argc, argv, options, "version");
1186 if (hide_banner || idx)
1187 return;
1188
1189 print_program_info (INDENT|SHOW_COPYRIGHT, AV_LOG_INFO);
1190 print_all_libs_info(INDENT|SHOW_CONFIG, AV_LOG_INFO);
1191 print_all_libs_info(INDENT|SHOW_VERSION, AV_LOG_INFO);
1192 }
1193
show_version(void * optctx,const char * opt,const char * arg)1194 int show_version(void *optctx, const char *opt, const char *arg)
1195 {
1196 av_log_set_callback(log_callback_help);
1197 print_program_info (SHOW_COPYRIGHT, AV_LOG_INFO);
1198 print_all_libs_info(SHOW_VERSION, AV_LOG_INFO);
1199
1200 return 0;
1201 }
1202
show_buildconf(void * optctx,const char * opt,const char * arg)1203 int show_buildconf(void *optctx, const char *opt, const char *arg)
1204 {
1205 av_log_set_callback(log_callback_help);
1206 print_buildconf (INDENT|0, AV_LOG_INFO);
1207
1208 return 0;
1209 }
1210
show_license(void * optctx,const char * opt,const char * arg)1211 int show_license(void *optctx, const char *opt, const char *arg)
1212 {
1213 #if CONFIG_NONFREE
1214 printf(
1215 "This version of %s has nonfree parts compiled in.\n"
1216 "Therefore it is not legally redistributable.\n",
1217 program_name );
1218 #elif CONFIG_GPLV3
1219 printf(
1220 "%s is free software; you can redistribute it and/or modify\n"
1221 "it under the terms of the GNU General Public License as published by\n"
1222 "the Free Software Foundation; either version 3 of the License, or\n"
1223 "(at your option) any later version.\n"
1224 "\n"
1225 "%s is distributed in the hope that it will be useful,\n"
1226 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1227 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1228 "GNU General Public License for more details.\n"
1229 "\n"
1230 "You should have received a copy of the GNU General Public License\n"
1231 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1232 program_name, program_name, program_name );
1233 #elif CONFIG_GPL
1234 printf(
1235 "%s is free software; you can redistribute it and/or modify\n"
1236 "it under the terms of the GNU General Public License as published by\n"
1237 "the Free Software Foundation; either version 2 of the License, or\n"
1238 "(at your option) any later version.\n"
1239 "\n"
1240 "%s is distributed in the hope that it will be useful,\n"
1241 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1242 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1243 "GNU General Public License for more details.\n"
1244 "\n"
1245 "You should have received a copy of the GNU General Public License\n"
1246 "along with %s; if not, write to the Free Software\n"
1247 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1248 program_name, program_name, program_name );
1249 #elif CONFIG_LGPLV3
1250 printf(
1251 "%s is free software; you can redistribute it and/or modify\n"
1252 "it under the terms of the GNU Lesser General Public License as published by\n"
1253 "the Free Software Foundation; either version 3 of the License, or\n"
1254 "(at your option) any later version.\n"
1255 "\n"
1256 "%s is distributed in the hope that it will be useful,\n"
1257 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1258 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1259 "GNU Lesser General Public License for more details.\n"
1260 "\n"
1261 "You should have received a copy of the GNU Lesser General Public License\n"
1262 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1263 program_name, program_name, program_name );
1264 #else
1265 printf(
1266 "%s is free software; you can redistribute it and/or\n"
1267 "modify it under the terms of the GNU Lesser General Public\n"
1268 "License as published by the Free Software Foundation; either\n"
1269 "version 2.1 of the License, or (at your option) any later version.\n"
1270 "\n"
1271 "%s is distributed in the hope that it will be useful,\n"
1272 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1273 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
1274 "Lesser General Public License for more details.\n"
1275 "\n"
1276 "You should have received a copy of the GNU Lesser General Public\n"
1277 "License along with %s; if not, write to the Free Software\n"
1278 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1279 program_name, program_name, program_name );
1280 #endif
1281
1282 return 0;
1283 }
1284
is_device(const AVClass * avclass)1285 static int is_device(const AVClass *avclass)
1286 {
1287 if (!avclass)
1288 return 0;
1289 return AV_IS_INPUT_DEVICE(avclass->category) || AV_IS_OUTPUT_DEVICE(avclass->category);
1290 }
1291
show_formats_devices(void * optctx,const char * opt,const char * arg,int device_only,int muxdemuxers)1292 static int show_formats_devices(void *optctx, const char *opt, const char *arg, int device_only, int muxdemuxers)
1293 {
1294 void *ifmt_opaque = NULL;
1295 const AVInputFormat *ifmt = NULL;
1296 void *ofmt_opaque = NULL;
1297 const AVOutputFormat *ofmt = NULL;
1298 const char *last_name;
1299 int is_dev;
1300
1301 printf("%s\n"
1302 " D. = Demuxing supported\n"
1303 " .E = Muxing supported\n"
1304 " --\n", device_only ? "Devices:" : "File formats:");
1305 last_name = "000";
1306 for (;;) {
1307 int decode = 0;
1308 int encode = 0;
1309 const char *name = NULL;
1310 const char *long_name = NULL;
1311
1312 if (muxdemuxers !=SHOW_DEMUXERS) {
1313 ofmt_opaque = NULL;
1314 while ((ofmt = av_muxer_iterate(&ofmt_opaque))) {
1315 is_dev = is_device(ofmt->priv_class);
1316 if (!is_dev && device_only)
1317 continue;
1318 if ((!name || strcmp(ofmt->name, name) < 0) &&
1319 strcmp(ofmt->name, last_name) > 0) {
1320 name = ofmt->name;
1321 long_name = ofmt->long_name;
1322 encode = 1;
1323 }
1324 }
1325 }
1326 if (muxdemuxers != SHOW_MUXERS) {
1327 ifmt_opaque = NULL;
1328 while ((ifmt = av_demuxer_iterate(&ifmt_opaque))) {
1329 is_dev = is_device(ifmt->priv_class);
1330 if (!is_dev && device_only)
1331 continue;
1332 if ((!name || strcmp(ifmt->name, name) < 0) &&
1333 strcmp(ifmt->name, last_name) > 0) {
1334 name = ifmt->name;
1335 long_name = ifmt->long_name;
1336 encode = 0;
1337 }
1338 if (name && strcmp(ifmt->name, name) == 0)
1339 decode = 1;
1340 }
1341 }
1342 if (!name)
1343 break;
1344 last_name = name;
1345
1346 printf(" %s%s %-15s %s\n",
1347 decode ? "D" : " ",
1348 encode ? "E" : " ",
1349 name,
1350 long_name ? long_name:" ");
1351 }
1352 return 0;
1353 }
1354
show_formats(void * optctx,const char * opt,const char * arg)1355 int show_formats(void *optctx, const char *opt, const char *arg)
1356 {
1357 return show_formats_devices(optctx, opt, arg, 0, SHOW_DEFAULT);
1358 }
1359
show_muxers(void * optctx,const char * opt,const char * arg)1360 int show_muxers(void *optctx, const char *opt, const char *arg)
1361 {
1362 return show_formats_devices(optctx, opt, arg, 0, SHOW_MUXERS);
1363 }
1364
show_demuxers(void * optctx,const char * opt,const char * arg)1365 int show_demuxers(void *optctx, const char *opt, const char *arg)
1366 {
1367 return show_formats_devices(optctx, opt, arg, 0, SHOW_DEMUXERS);
1368 }
1369
show_devices(void * optctx,const char * opt,const char * arg)1370 int show_devices(void *optctx, const char *opt, const char *arg)
1371 {
1372 return show_formats_devices(optctx, opt, arg, 1, SHOW_DEFAULT);
1373 }
1374
1375 #define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name) \
1376 if (codec->field) { \
1377 const type *p = codec->field; \
1378 \
1379 printf(" Supported " list_name ":"); \
1380 while (*p != term) { \
1381 get_name(*p); \
1382 printf(" %s", name); \
1383 p++; \
1384 } \
1385 printf("\n"); \
1386 } \
1387
print_codec(const AVCodec * c)1388 static void print_codec(const AVCodec *c)
1389 {
1390 int encoder = av_codec_is_encoder(c);
1391
1392 printf("%s %s [%s]:\n", encoder ? "Encoder" : "Decoder", c->name,
1393 c->long_name ? c->long_name : "");
1394
1395 printf(" General capabilities: ");
1396 if (c->capabilities & AV_CODEC_CAP_DRAW_HORIZ_BAND)
1397 printf("horizband ");
1398 if (c->capabilities & AV_CODEC_CAP_DR1)
1399 printf("dr1 ");
1400 if (c->capabilities & AV_CODEC_CAP_TRUNCATED)
1401 printf("trunc ");
1402 if (c->capabilities & AV_CODEC_CAP_DELAY)
1403 printf("delay ");
1404 if (c->capabilities & AV_CODEC_CAP_SMALL_LAST_FRAME)
1405 printf("small ");
1406 if (c->capabilities & AV_CODEC_CAP_SUBFRAMES)
1407 printf("subframes ");
1408 if (c->capabilities & AV_CODEC_CAP_EXPERIMENTAL)
1409 printf("exp ");
1410 if (c->capabilities & AV_CODEC_CAP_CHANNEL_CONF)
1411 printf("chconf ");
1412 if (c->capabilities & AV_CODEC_CAP_PARAM_CHANGE)
1413 printf("paramchange ");
1414 if (c->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)
1415 printf("variable ");
1416 if (c->capabilities & (AV_CODEC_CAP_FRAME_THREADS |
1417 AV_CODEC_CAP_SLICE_THREADS |
1418 AV_CODEC_CAP_OTHER_THREADS))
1419 printf("threads ");
1420 if (c->capabilities & AV_CODEC_CAP_AVOID_PROBING)
1421 printf("avoidprobe ");
1422 if (c->capabilities & AV_CODEC_CAP_HARDWARE)
1423 printf("hardware ");
1424 if (c->capabilities & AV_CODEC_CAP_HYBRID)
1425 printf("hybrid ");
1426 if (!c->capabilities)
1427 printf("none");
1428 printf("\n");
1429
1430 if (c->type == AVMEDIA_TYPE_VIDEO ||
1431 c->type == AVMEDIA_TYPE_AUDIO) {
1432 printf(" Threading capabilities: ");
1433 switch (c->capabilities & (AV_CODEC_CAP_FRAME_THREADS |
1434 AV_CODEC_CAP_SLICE_THREADS |
1435 AV_CODEC_CAP_OTHER_THREADS)) {
1436 case AV_CODEC_CAP_FRAME_THREADS |
1437 AV_CODEC_CAP_SLICE_THREADS: printf("frame and slice"); break;
1438 case AV_CODEC_CAP_FRAME_THREADS: printf("frame"); break;
1439 case AV_CODEC_CAP_SLICE_THREADS: printf("slice"); break;
1440 case AV_CODEC_CAP_OTHER_THREADS: printf("other"); break;
1441 default: printf("none"); break;
1442 }
1443 printf("\n");
1444 }
1445
1446 if (avcodec_get_hw_config(c, 0)) {
1447 printf(" Supported hardware devices: ");
1448 for (int i = 0;; i++) {
1449 const AVCodecHWConfig *config = avcodec_get_hw_config(c, i);
1450 if (!config)
1451 break;
1452 printf("%s ", av_hwdevice_get_type_name(config->device_type));
1453 }
1454 printf("\n");
1455 }
1456
1457 if (c->supported_framerates) {
1458 const AVRational *fps = c->supported_framerates;
1459
1460 printf(" Supported framerates:");
1461 while (fps->num) {
1462 printf(" %d/%d", fps->num, fps->den);
1463 fps++;
1464 }
1465 printf("\n");
1466 }
1467 PRINT_CODEC_SUPPORTED(c, pix_fmts, enum AVPixelFormat, "pixel formats",
1468 AV_PIX_FMT_NONE, GET_PIX_FMT_NAME);
1469 PRINT_CODEC_SUPPORTED(c, supported_samplerates, int, "sample rates", 0,
1470 GET_SAMPLE_RATE_NAME);
1471 PRINT_CODEC_SUPPORTED(c, sample_fmts, enum AVSampleFormat, "sample formats",
1472 AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME);
1473 PRINT_CODEC_SUPPORTED(c, channel_layouts, uint64_t, "channel layouts",
1474 0, GET_CH_LAYOUT_DESC);
1475
1476 if (c->priv_class) {
1477 show_help_children(c->priv_class,
1478 AV_OPT_FLAG_ENCODING_PARAM |
1479 AV_OPT_FLAG_DECODING_PARAM);
1480 }
1481 }
1482
get_media_type_char(enum AVMediaType type)1483 static char get_media_type_char(enum AVMediaType type)
1484 {
1485 switch (type) {
1486 case AVMEDIA_TYPE_VIDEO: return 'V';
1487 case AVMEDIA_TYPE_AUDIO: return 'A';
1488 case AVMEDIA_TYPE_DATA: return 'D';
1489 case AVMEDIA_TYPE_SUBTITLE: return 'S';
1490 case AVMEDIA_TYPE_ATTACHMENT:return 'T';
1491 default: return '?';
1492 }
1493 }
1494
next_codec_for_id(enum AVCodecID id,void ** iter,int encoder)1495 static const AVCodec *next_codec_for_id(enum AVCodecID id, void **iter,
1496 int encoder)
1497 {
1498 const AVCodec *c;
1499 while ((c = av_codec_iterate(iter))) {
1500 if (c->id == id &&
1501 (encoder ? av_codec_is_encoder(c) : av_codec_is_decoder(c)))
1502 return c;
1503 }
1504 return NULL;
1505 }
1506
compare_codec_desc(const void * a,const void * b)1507 static int compare_codec_desc(const void *a, const void *b)
1508 {
1509 const AVCodecDescriptor * const *da = a;
1510 const AVCodecDescriptor * const *db = b;
1511
1512 return (*da)->type != (*db)->type ? FFDIFFSIGN((*da)->type, (*db)->type) :
1513 strcmp((*da)->name, (*db)->name);
1514 }
1515
get_codecs_sorted(const AVCodecDescriptor *** rcodecs)1516 static unsigned get_codecs_sorted(const AVCodecDescriptor ***rcodecs)
1517 {
1518 const AVCodecDescriptor *desc = NULL;
1519 const AVCodecDescriptor **codecs;
1520 unsigned nb_codecs = 0, i = 0;
1521
1522 while ((desc = avcodec_descriptor_next(desc)))
1523 nb_codecs++;
1524 if (!(codecs = av_calloc(nb_codecs, sizeof(*codecs)))) {
1525 av_log(NULL, AV_LOG_ERROR, "Out of memory\n");
1526 exit_program(1);
1527 }
1528 desc = NULL;
1529 while ((desc = avcodec_descriptor_next(desc)))
1530 codecs[i++] = desc;
1531 av_assert0(i == nb_codecs);
1532 qsort(codecs, nb_codecs, sizeof(*codecs), compare_codec_desc);
1533 *rcodecs = codecs;
1534 return nb_codecs;
1535 }
1536
print_codecs_for_id(enum AVCodecID id,int encoder)1537 static void print_codecs_for_id(enum AVCodecID id, int encoder)
1538 {
1539 void *iter = NULL;
1540 const AVCodec *codec;
1541
1542 printf(" (%s: ", encoder ? "encoders" : "decoders");
1543
1544 while ((codec = next_codec_for_id(id, &iter, encoder)))
1545 printf("%s ", codec->name);
1546
1547 printf(")");
1548 }
1549
show_codecs(void * optctx,const char * opt,const char * arg)1550 int show_codecs(void *optctx, const char *opt, const char *arg)
1551 {
1552 const AVCodecDescriptor **codecs;
1553 unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1554
1555 printf("Codecs:\n"
1556 " D..... = Decoding supported\n"
1557 " .E.... = Encoding supported\n"
1558 " ..V... = Video codec\n"
1559 " ..A... = Audio codec\n"
1560 " ..S... = Subtitle codec\n"
1561 " ...I.. = Intra frame-only codec\n"
1562 " ....L. = Lossy compression\n"
1563 " .....S = Lossless compression\n"
1564 " -------\n");
1565 for (i = 0; i < nb_codecs; i++) {
1566 const AVCodecDescriptor *desc = codecs[i];
1567 const AVCodec *codec;
1568 void *iter = NULL;
1569
1570 if (strstr(desc->name, "_deprecated"))
1571 continue;
1572
1573 printf(" ");
1574 printf(avcodec_find_decoder(desc->id) ? "D" : ".");
1575 printf(avcodec_find_encoder(desc->id) ? "E" : ".");
1576
1577 printf("%c", get_media_type_char(desc->type));
1578 printf((desc->props & AV_CODEC_PROP_INTRA_ONLY) ? "I" : ".");
1579 printf((desc->props & AV_CODEC_PROP_LOSSY) ? "L" : ".");
1580 printf((desc->props & AV_CODEC_PROP_LOSSLESS) ? "S" : ".");
1581
1582 printf(" %-20s %s", desc->name, desc->long_name ? desc->long_name : "");
1583
1584 /* print decoders/encoders when there's more than one or their
1585 * names are different from codec name */
1586 while ((codec = next_codec_for_id(desc->id, &iter, 0))) {
1587 if (strcmp(codec->name, desc->name)) {
1588 print_codecs_for_id(desc->id, 0);
1589 break;
1590 }
1591 }
1592 iter = NULL;
1593 while ((codec = next_codec_for_id(desc->id, &iter, 1))) {
1594 if (strcmp(codec->name, desc->name)) {
1595 print_codecs_for_id(desc->id, 1);
1596 break;
1597 }
1598 }
1599
1600 printf("\n");
1601 }
1602 av_free(codecs);
1603 return 0;
1604 }
1605
print_codecs(int encoder)1606 static void print_codecs(int encoder)
1607 {
1608 const AVCodecDescriptor **codecs;
1609 unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1610
1611 printf("%s:\n"
1612 " V..... = Video\n"
1613 " A..... = Audio\n"
1614 " S..... = Subtitle\n"
1615 " .F.... = Frame-level multithreading\n"
1616 " ..S... = Slice-level multithreading\n"
1617 " ...X.. = Codec is experimental\n"
1618 " ....B. = Supports draw_horiz_band\n"
1619 " .....D = Supports direct rendering method 1\n"
1620 " ------\n",
1621 encoder ? "Encoders" : "Decoders");
1622 for (i = 0; i < nb_codecs; i++) {
1623 const AVCodecDescriptor *desc = codecs[i];
1624 const AVCodec *codec;
1625 void *iter = NULL;
1626
1627 while ((codec = next_codec_for_id(desc->id, &iter, encoder))) {
1628 printf(" %c", get_media_type_char(desc->type));
1629 printf((codec->capabilities & AV_CODEC_CAP_FRAME_THREADS) ? "F" : ".");
1630 printf((codec->capabilities & AV_CODEC_CAP_SLICE_THREADS) ? "S" : ".");
1631 printf((codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) ? "X" : ".");
1632 printf((codec->capabilities & AV_CODEC_CAP_DRAW_HORIZ_BAND)?"B" : ".");
1633 printf((codec->capabilities & AV_CODEC_CAP_DR1) ? "D" : ".");
1634
1635 printf(" %-20s %s", codec->name, codec->long_name ? codec->long_name : "");
1636 if (strcmp(codec->name, desc->name))
1637 printf(" (codec %s)", desc->name);
1638
1639 printf("\n");
1640 }
1641 }
1642 av_free(codecs);
1643 }
1644
show_decoders(void * optctx,const char * opt,const char * arg)1645 int show_decoders(void *optctx, const char *opt, const char *arg)
1646 {
1647 print_codecs(0);
1648 return 0;
1649 }
1650
show_encoders(void * optctx,const char * opt,const char * arg)1651 int show_encoders(void *optctx, const char *opt, const char *arg)
1652 {
1653 print_codecs(1);
1654 return 0;
1655 }
1656
show_bsfs(void * optctx,const char * opt,const char * arg)1657 int show_bsfs(void *optctx, const char *opt, const char *arg)
1658 {
1659 const AVBitStreamFilter *bsf = NULL;
1660 void *opaque = NULL;
1661
1662 printf("Bitstream filters:\n");
1663 while ((bsf = av_bsf_iterate(&opaque)))
1664 printf("%s\n", bsf->name);
1665 printf("\n");
1666 return 0;
1667 }
1668
show_protocols(void * optctx,const char * opt,const char * arg)1669 int show_protocols(void *optctx, const char *opt, const char *arg)
1670 {
1671 void *opaque = NULL;
1672 const char *name;
1673
1674 printf("Supported file protocols:\n"
1675 "Input:\n");
1676 while ((name = avio_enum_protocols(&opaque, 0)))
1677 printf(" %s\n", name);
1678 printf("Output:\n");
1679 while ((name = avio_enum_protocols(&opaque, 1)))
1680 printf(" %s\n", name);
1681 return 0;
1682 }
1683
show_filters(void * optctx,const char * opt,const char * arg)1684 int show_filters(void *optctx, const char *opt, const char *arg)
1685 {
1686 #if CONFIG_AVFILTER
1687 const AVFilter *filter = NULL;
1688 char descr[64], *descr_cur;
1689 void *opaque = NULL;
1690 int i, j;
1691 const AVFilterPad *pad;
1692
1693 printf("Filters:\n"
1694 " T.. = Timeline support\n"
1695 " .S. = Slice threading\n"
1696 " ..C = Command support\n"
1697 " A = Audio input/output\n"
1698 " V = Video input/output\n"
1699 " N = Dynamic number and/or type of input/output\n"
1700 " | = Source or sink filter\n");
1701 while ((filter = av_filter_iterate(&opaque))) {
1702 descr_cur = descr;
1703 for (i = 0; i < 2; i++) {
1704 if (i) {
1705 *(descr_cur++) = '-';
1706 *(descr_cur++) = '>';
1707 }
1708 pad = i ? filter->outputs : filter->inputs;
1709 for (j = 0; pad && avfilter_pad_get_name(pad, j); j++) {
1710 if (descr_cur >= descr + sizeof(descr) - 4)
1711 break;
1712 *(descr_cur++) = get_media_type_char(avfilter_pad_get_type(pad, j));
1713 }
1714 if (!j)
1715 *(descr_cur++) = ((!i && (filter->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)) ||
1716 ( i && (filter->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS))) ? 'N' : '|';
1717 }
1718 *descr_cur = 0;
1719 printf(" %c%c%c %-17s %-10s %s\n",
1720 filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE ? 'T' : '.',
1721 filter->flags & AVFILTER_FLAG_SLICE_THREADS ? 'S' : '.',
1722 filter->process_command ? 'C' : '.',
1723 filter->name, descr, filter->description);
1724 }
1725 #else
1726 printf("No filters available: libavfilter disabled\n");
1727 #endif
1728 return 0;
1729 }
1730
show_colors(void * optctx,const char * opt,const char * arg)1731 int show_colors(void *optctx, const char *opt, const char *arg)
1732 {
1733 const char *name;
1734 const uint8_t *rgb;
1735 int i;
1736
1737 printf("%-32s #RRGGBB\n", "name");
1738
1739 for (i = 0; name = av_get_known_color_name(i, &rgb); i++)
1740 printf("%-32s #%02x%02x%02x\n", name, rgb[0], rgb[1], rgb[2]);
1741
1742 return 0;
1743 }
1744
show_pix_fmts(void * optctx,const char * opt,const char * arg)1745 int show_pix_fmts(void *optctx, const char *opt, const char *arg)
1746 {
1747 const AVPixFmtDescriptor *pix_desc = NULL;
1748
1749 printf("Pixel formats:\n"
1750 "I.... = Supported Input format for conversion\n"
1751 ".O... = Supported Output format for conversion\n"
1752 "..H.. = Hardware accelerated format\n"
1753 "...P. = Paletted format\n"
1754 "....B = Bitstream format\n"
1755 "FLAGS NAME NB_COMPONENTS BITS_PER_PIXEL\n"
1756 "-----\n");
1757
1758 #if !CONFIG_SWSCALE
1759 # define sws_isSupportedInput(x) 0
1760 # define sws_isSupportedOutput(x) 0
1761 #endif
1762
1763 while ((pix_desc = av_pix_fmt_desc_next(pix_desc))) {
1764 enum AVPixelFormat av_unused pix_fmt = av_pix_fmt_desc_get_id(pix_desc);
1765 printf("%c%c%c%c%c %-16s %d %2d\n",
1766 sws_isSupportedInput (pix_fmt) ? 'I' : '.',
1767 sws_isSupportedOutput(pix_fmt) ? 'O' : '.',
1768 pix_desc->flags & AV_PIX_FMT_FLAG_HWACCEL ? 'H' : '.',
1769 pix_desc->flags & AV_PIX_FMT_FLAG_PAL ? 'P' : '.',
1770 pix_desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ? 'B' : '.',
1771 pix_desc->name,
1772 pix_desc->nb_components,
1773 av_get_bits_per_pixel(pix_desc));
1774 }
1775 return 0;
1776 }
1777
show_layouts(void * optctx,const char * opt,const char * arg)1778 int show_layouts(void *optctx, const char *opt, const char *arg)
1779 {
1780 int i = 0;
1781 uint64_t layout, j;
1782 const char *name, *descr;
1783
1784 printf("Individual channels:\n"
1785 "NAME DESCRIPTION\n");
1786 for (i = 0; i < 63; i++) {
1787 name = av_get_channel_name((uint64_t)1 << i);
1788 if (!name)
1789 continue;
1790 descr = av_get_channel_description((uint64_t)1 << i);
1791 printf("%-14s %s\n", name, descr);
1792 }
1793 printf("\nStandard channel layouts:\n"
1794 "NAME DECOMPOSITION\n");
1795 for (i = 0; !av_get_standard_channel_layout(i, &layout, &name); i++) {
1796 if (name) {
1797 printf("%-14s ", name);
1798 for (j = 1; j; j <<= 1)
1799 if ((layout & j))
1800 printf("%s%s", (layout & (j - 1)) ? "+" : "", av_get_channel_name(j));
1801 printf("\n");
1802 }
1803 }
1804 return 0;
1805 }
1806
show_sample_fmts(void * optctx,const char * opt,const char * arg)1807 int show_sample_fmts(void *optctx, const char *opt, const char *arg)
1808 {
1809 int i;
1810 char fmt_str[128];
1811 for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
1812 printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
1813 return 0;
1814 }
1815
show_help_codec(const char * name,int encoder)1816 static void show_help_codec(const char *name, int encoder)
1817 {
1818 const AVCodecDescriptor *desc;
1819 const AVCodec *codec;
1820
1821 if (!name) {
1822 av_log(NULL, AV_LOG_ERROR, "No codec name specified.\n");
1823 return;
1824 }
1825
1826 codec = encoder ? avcodec_find_encoder_by_name(name) :
1827 avcodec_find_decoder_by_name(name);
1828
1829 if (codec)
1830 print_codec(codec);
1831 else if ((desc = avcodec_descriptor_get_by_name(name))) {
1832 void *iter = NULL;
1833 int printed = 0;
1834
1835 while ((codec = next_codec_for_id(desc->id, &iter, encoder))) {
1836 printed = 1;
1837 print_codec(codec);
1838 }
1839
1840 if (!printed) {
1841 av_log(NULL, AV_LOG_ERROR, "Codec '%s' is known to FFmpeg, "
1842 "but no %s for it are available. FFmpeg might need to be "
1843 "recompiled with additional external libraries.\n",
1844 name, encoder ? "encoders" : "decoders");
1845 }
1846 } else {
1847 av_log(NULL, AV_LOG_ERROR, "Codec '%s' is not recognized by FFmpeg.\n",
1848 name);
1849 }
1850 }
1851
show_help_demuxer(const char * name)1852 static void show_help_demuxer(const char *name)
1853 {
1854 const AVInputFormat *fmt = av_find_input_format(name);
1855
1856 if (!fmt) {
1857 av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1858 return;
1859 }
1860
1861 printf("Demuxer %s [%s]:\n", fmt->name, fmt->long_name);
1862
1863 if (fmt->extensions)
1864 printf(" Common extensions: %s.\n", fmt->extensions);
1865
1866 if (fmt->priv_class)
1867 show_help_children(fmt->priv_class, AV_OPT_FLAG_DECODING_PARAM);
1868 }
1869
show_help_protocol(const char * name)1870 static void show_help_protocol(const char *name)
1871 {
1872 const AVClass *proto_class;
1873
1874 if (!name) {
1875 av_log(NULL, AV_LOG_ERROR, "No protocol name specified.\n");
1876 return;
1877 }
1878
1879 proto_class = avio_protocol_get_class(name);
1880 if (!proto_class) {
1881 av_log(NULL, AV_LOG_ERROR, "Unknown protocol '%s'.\n", name);
1882 return;
1883 }
1884
1885 show_help_children(proto_class, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_ENCODING_PARAM);
1886 }
1887
show_help_muxer(const char * name)1888 static void show_help_muxer(const char *name)
1889 {
1890 const AVCodecDescriptor *desc;
1891 const AVOutputFormat *fmt = av_guess_format(name, NULL, NULL);
1892
1893 if (!fmt) {
1894 av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1895 return;
1896 }
1897
1898 printf("Muxer %s [%s]:\n", fmt->name, fmt->long_name);
1899
1900 if (fmt->extensions)
1901 printf(" Common extensions: %s.\n", fmt->extensions);
1902 if (fmt->mime_type)
1903 printf(" Mime type: %s.\n", fmt->mime_type);
1904 if (fmt->video_codec != AV_CODEC_ID_NONE &&
1905 (desc = avcodec_descriptor_get(fmt->video_codec))) {
1906 printf(" Default video codec: %s.\n", desc->name);
1907 }
1908 if (fmt->audio_codec != AV_CODEC_ID_NONE &&
1909 (desc = avcodec_descriptor_get(fmt->audio_codec))) {
1910 printf(" Default audio codec: %s.\n", desc->name);
1911 }
1912 if (fmt->subtitle_codec != AV_CODEC_ID_NONE &&
1913 (desc = avcodec_descriptor_get(fmt->subtitle_codec))) {
1914 printf(" Default subtitle codec: %s.\n", desc->name);
1915 }
1916
1917 if (fmt->priv_class)
1918 show_help_children(fmt->priv_class, AV_OPT_FLAG_ENCODING_PARAM);
1919 }
1920
1921 #if CONFIG_AVFILTER
show_help_filter(const char * name)1922 static void show_help_filter(const char *name)
1923 {
1924 #if CONFIG_AVFILTER
1925 const AVFilter *f = avfilter_get_by_name(name);
1926 int i, count;
1927
1928 if (!name) {
1929 av_log(NULL, AV_LOG_ERROR, "No filter name specified.\n");
1930 return;
1931 } else if (!f) {
1932 av_log(NULL, AV_LOG_ERROR, "Unknown filter '%s'.\n", name);
1933 return;
1934 }
1935
1936 printf("Filter %s\n", f->name);
1937 if (f->description)
1938 printf(" %s\n", f->description);
1939
1940 if (f->flags & AVFILTER_FLAG_SLICE_THREADS)
1941 printf(" slice threading supported\n");
1942
1943 printf(" Inputs:\n");
1944 count = avfilter_pad_count(f->inputs);
1945 for (i = 0; i < count; i++) {
1946 printf(" #%d: %s (%s)\n", i, avfilter_pad_get_name(f->inputs, i),
1947 media_type_string(avfilter_pad_get_type(f->inputs, i)));
1948 }
1949 if (f->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)
1950 printf(" dynamic (depending on the options)\n");
1951 else if (!count)
1952 printf(" none (source filter)\n");
1953
1954 printf(" Outputs:\n");
1955 count = avfilter_pad_count(f->outputs);
1956 for (i = 0; i < count; i++) {
1957 printf(" #%d: %s (%s)\n", i, avfilter_pad_get_name(f->outputs, i),
1958 media_type_string(avfilter_pad_get_type(f->outputs, i)));
1959 }
1960 if (f->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS)
1961 printf(" dynamic (depending on the options)\n");
1962 else if (!count)
1963 printf(" none (sink filter)\n");
1964
1965 if (f->priv_class)
1966 show_help_children(f->priv_class, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM |
1967 AV_OPT_FLAG_AUDIO_PARAM);
1968 if (f->flags & AVFILTER_FLAG_SUPPORT_TIMELINE)
1969 printf("This filter has support for timeline through the 'enable' option.\n");
1970 #else
1971 av_log(NULL, AV_LOG_ERROR, "Build without libavfilter; "
1972 "can not to satisfy request\n");
1973 #endif
1974 }
1975 #endif
1976
show_help_bsf(const char * name)1977 static void show_help_bsf(const char *name)
1978 {
1979 const AVBitStreamFilter *bsf = av_bsf_get_by_name(name);
1980
1981 if (!name) {
1982 av_log(NULL, AV_LOG_ERROR, "No bitstream filter name specified.\n");
1983 return;
1984 } else if (!bsf) {
1985 av_log(NULL, AV_LOG_ERROR, "Unknown bit stream filter '%s'.\n", name);
1986 return;
1987 }
1988
1989 printf("Bit stream filter %s\n", bsf->name);
1990 PRINT_CODEC_SUPPORTED(bsf, codec_ids, enum AVCodecID, "codecs",
1991 AV_CODEC_ID_NONE, GET_CODEC_NAME);
1992 if (bsf->priv_class)
1993 show_help_children(bsf->priv_class, AV_OPT_FLAG_BSF_PARAM);
1994 }
1995
show_help(void * optctx,const char * opt,const char * arg)1996 int show_help(void *optctx, const char *opt, const char *arg)
1997 {
1998 char *topic, *par;
1999 av_log_set_callback(log_callback_help);
2000
2001 topic = av_strdup(arg ? arg : "");
2002 if (!topic)
2003 return AVERROR(ENOMEM);
2004 par = strchr(topic, '=');
2005 if (par)
2006 *par++ = 0;
2007
2008 if (!*topic) {
2009 show_help_default(topic, par);
2010 } else if (!strcmp(topic, "decoder")) {
2011 show_help_codec(par, 0);
2012 } else if (!strcmp(topic, "encoder")) {
2013 show_help_codec(par, 1);
2014 } else if (!strcmp(topic, "demuxer")) {
2015 show_help_demuxer(par);
2016 } else if (!strcmp(topic, "muxer")) {
2017 show_help_muxer(par);
2018 } else if (!strcmp(topic, "protocol")) {
2019 show_help_protocol(par);
2020 #if CONFIG_AVFILTER
2021 } else if (!strcmp(topic, "filter")) {
2022 show_help_filter(par);
2023 #endif
2024 } else if (!strcmp(topic, "bsf")) {
2025 show_help_bsf(par);
2026 } else {
2027 show_help_default(topic, par);
2028 }
2029
2030 av_freep(&topic);
2031 return 0;
2032 }
2033
read_yesno(void)2034 int read_yesno(void)
2035 {
2036 int c = getchar();
2037 int yesno = (av_toupper(c) == 'Y');
2038
2039 while (c != '\n' && c != EOF)
2040 c = getchar();
2041
2042 return yesno;
2043 }
2044
get_preset_file(char * filename,size_t filename_size,const char * preset_name,int is_path,const char * codec_name)2045 FILE *get_preset_file(char *filename, size_t filename_size,
2046 const char *preset_name, int is_path,
2047 const char *codec_name)
2048 {
2049 FILE *f = NULL;
2050 int i;
2051 const char *base[3] = { getenv("FFMPEG_DATADIR"),
2052 getenv("HOME"),
2053 FFMPEG_DATADIR, };
2054
2055 if (is_path) {
2056 av_strlcpy(filename, preset_name, filename_size);
2057 f = fopen(filename, "r");
2058 } else {
2059 #if HAVE_GETMODULEHANDLE && defined(_WIN32)
2060 char datadir[MAX_PATH], *ls;
2061 base[2] = NULL;
2062
2063 if (GetModuleFileNameA(GetModuleHandleA(NULL), datadir, sizeof(datadir) - 1))
2064 {
2065 for (ls = datadir; ls < datadir + strlen(datadir); ls++)
2066 if (*ls == '\\') *ls = '/';
2067
2068 if (ls = strrchr(datadir, '/'))
2069 {
2070 *ls = 0;
2071 strncat(datadir, "/ffpresets", sizeof(datadir) - 1 - strlen(datadir));
2072 base[2] = datadir;
2073 }
2074 }
2075 #endif
2076 for (i = 0; i < 3 && !f; i++) {
2077 if (!base[i])
2078 continue;
2079 snprintf(filename, filename_size, "%s%s/%s.ffpreset", base[i],
2080 i != 1 ? "" : "/.ffmpeg", preset_name);
2081 f = fopen(filename, "r");
2082 if (!f && codec_name) {
2083 snprintf(filename, filename_size,
2084 "%s%s/%s-%s.ffpreset",
2085 base[i], i != 1 ? "" : "/.ffmpeg", codec_name,
2086 preset_name);
2087 f = fopen(filename, "r");
2088 }
2089 }
2090 }
2091
2092 return f;
2093 }
2094
check_stream_specifier(AVFormatContext * s,AVStream * st,const char * spec)2095 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
2096 {
2097 int ret = avformat_match_stream_specifier(s, st, spec);
2098 if (ret < 0)
2099 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
2100 return ret;
2101 }
2102
filter_codec_opts(AVDictionary * opts,enum AVCodecID codec_id,AVFormatContext * s,AVStream * st,const AVCodec * codec)2103 AVDictionary *filter_codec_opts(AVDictionary *opts, enum AVCodecID codec_id,
2104 AVFormatContext *s, AVStream *st, const AVCodec *codec)
2105 {
2106 AVDictionary *ret = NULL;
2107 AVDictionaryEntry *t = NULL;
2108 int flags = s->oformat ? AV_OPT_FLAG_ENCODING_PARAM
2109 : AV_OPT_FLAG_DECODING_PARAM;
2110 char prefix = 0;
2111 const AVClass *cc = avcodec_get_class();
2112
2113 if (!codec)
2114 codec = s->oformat ? avcodec_find_encoder(codec_id)
2115 : avcodec_find_decoder(codec_id);
2116
2117 switch (st->codecpar->codec_type) {
2118 case AVMEDIA_TYPE_VIDEO:
2119 prefix = 'v';
2120 flags |= AV_OPT_FLAG_VIDEO_PARAM;
2121 break;
2122 case AVMEDIA_TYPE_AUDIO:
2123 prefix = 'a';
2124 flags |= AV_OPT_FLAG_AUDIO_PARAM;
2125 break;
2126 case AVMEDIA_TYPE_SUBTITLE:
2127 prefix = 's';
2128 flags |= AV_OPT_FLAG_SUBTITLE_PARAM;
2129 break;
2130 }
2131
2132 while (t = av_dict_get(opts, "", t, AV_DICT_IGNORE_SUFFIX)) {
2133 const AVClass *priv_class;
2134 char *p = strchr(t->key, ':');
2135
2136 /* check stream specification in opt name */
2137 if (p)
2138 switch (check_stream_specifier(s, st, p + 1)) {
2139 case 1: *p = 0; break;
2140 case 0: continue;
2141 default: exit_program(1);
2142 }
2143
2144 if (av_opt_find(&cc, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ) ||
2145 !codec ||
2146 ((priv_class = codec->priv_class) &&
2147 av_opt_find(&priv_class, t->key, NULL, flags,
2148 AV_OPT_SEARCH_FAKE_OBJ)))
2149 av_dict_set(&ret, t->key, t->value, 0);
2150 else if (t->key[0] == prefix &&
2151 av_opt_find(&cc, t->key + 1, NULL, flags,
2152 AV_OPT_SEARCH_FAKE_OBJ))
2153 av_dict_set(&ret, t->key + 1, t->value, 0);
2154
2155 if (p)
2156 *p = ':';
2157 }
2158 return ret;
2159 }
2160
setup_find_stream_info_opts(AVFormatContext * s,AVDictionary * codec_opts)2161 AVDictionary **setup_find_stream_info_opts(AVFormatContext *s,
2162 AVDictionary *codec_opts)
2163 {
2164 int i;
2165 AVDictionary **opts;
2166
2167 if (!s->nb_streams)
2168 return NULL;
2169 opts = av_mallocz_array(s->nb_streams, sizeof(*opts));
2170 if (!opts) {
2171 av_log(NULL, AV_LOG_ERROR,
2172 "Could not alloc memory for stream options.\n");
2173 return NULL;
2174 }
2175 for (i = 0; i < s->nb_streams; i++)
2176 opts[i] = filter_codec_opts(codec_opts, s->streams[i]->codecpar->codec_id,
2177 s, s->streams[i], NULL);
2178 return opts;
2179 }
2180
grow_array(void * array,int elem_size,int * size,int new_size)2181 void *grow_array(void *array, int elem_size, int *size, int new_size)
2182 {
2183 if (new_size >= INT_MAX / elem_size) {
2184 av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
2185 exit_program(1);
2186 }
2187 if (*size < new_size) {
2188 uint8_t *tmp = av_realloc_array(array, new_size, elem_size);
2189 if (!tmp) {
2190 av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
2191 exit_program(1);
2192 }
2193 memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
2194 *size = new_size;
2195 return tmp;
2196 }
2197 return array;
2198 }
2199
get_rotation(AVStream * st)2200 double get_rotation(AVStream *st)
2201 {
2202 uint8_t* displaymatrix = av_stream_get_side_data(st,
2203 AV_PKT_DATA_DISPLAYMATRIX, NULL);
2204 double theta = 0;
2205 if (displaymatrix)
2206 theta = -av_display_rotation_get((int32_t*) displaymatrix);
2207
2208 theta -= 360*floor(theta/360 + 0.9/360);
2209
2210 if (fabs(theta - 90*round(theta/90)) > 2)
2211 av_log(NULL, AV_LOG_WARNING, "Odd rotation angle.\n"
2212 "If you want to help, upload a sample "
2213 "of this file to https://streams.videolan.org/upload/ "
2214 "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)");
2215
2216 return theta;
2217 }
2218
2219 #if CONFIG_AVDEVICE
print_device_sources(AVInputFormat * fmt,AVDictionary * opts)2220 static int print_device_sources(AVInputFormat *fmt, AVDictionary *opts)
2221 {
2222 int ret, i;
2223 AVDeviceInfoList *device_list = NULL;
2224
2225 if (!fmt || !fmt->priv_class || !AV_IS_INPUT_DEVICE(fmt->priv_class->category))
2226 return AVERROR(EINVAL);
2227
2228 printf("Auto-detected sources for %s:\n", fmt->name);
2229 if (!fmt->get_device_list) {
2230 ret = AVERROR(ENOSYS);
2231 printf("Cannot list sources. Not implemented.\n");
2232 goto fail;
2233 }
2234
2235 if ((ret = avdevice_list_input_sources(fmt, NULL, opts, &device_list)) < 0) {
2236 printf("Cannot list sources.\n");
2237 goto fail;
2238 }
2239
2240 for (i = 0; i < device_list->nb_devices; i++) {
2241 printf("%s %s [%s]\n", device_list->default_device == i ? "*" : " ",
2242 device_list->devices[i]->device_name, device_list->devices[i]->device_description);
2243 }
2244
2245 fail:
2246 avdevice_free_list_devices(&device_list);
2247 return ret;
2248 }
2249
print_device_sinks(AVOutputFormat * fmt,AVDictionary * opts)2250 static int print_device_sinks(AVOutputFormat *fmt, AVDictionary *opts)
2251 {
2252 int ret, i;
2253 AVDeviceInfoList *device_list = NULL;
2254
2255 if (!fmt || !fmt->priv_class || !AV_IS_OUTPUT_DEVICE(fmt->priv_class->category))
2256 return AVERROR(EINVAL);
2257
2258 printf("Auto-detected sinks for %s:\n", fmt->name);
2259 if (!fmt->get_device_list) {
2260 ret = AVERROR(ENOSYS);
2261 printf("Cannot list sinks. Not implemented.\n");
2262 goto fail;
2263 }
2264
2265 if ((ret = avdevice_list_output_sinks(fmt, NULL, opts, &device_list)) < 0) {
2266 printf("Cannot list sinks.\n");
2267 goto fail;
2268 }
2269
2270 for (i = 0; i < device_list->nb_devices; i++) {
2271 printf("%s %s [%s]\n", device_list->default_device == i ? "*" : " ",
2272 device_list->devices[i]->device_name, device_list->devices[i]->device_description);
2273 }
2274
2275 fail:
2276 avdevice_free_list_devices(&device_list);
2277 return ret;
2278 }
2279
show_sinks_sources_parse_arg(const char * arg,char ** dev,AVDictionary ** opts)2280 static int show_sinks_sources_parse_arg(const char *arg, char **dev, AVDictionary **opts)
2281 {
2282 int ret;
2283 if (arg) {
2284 char *opts_str = NULL;
2285 av_assert0(dev && opts);
2286 *dev = av_strdup(arg);
2287 if (!*dev)
2288 return AVERROR(ENOMEM);
2289 if ((opts_str = strchr(*dev, ','))) {
2290 *(opts_str++) = '\0';
2291 if (opts_str[0] && ((ret = av_dict_parse_string(opts, opts_str, "=", ":", 0)) < 0)) {
2292 av_freep(dev);
2293 return ret;
2294 }
2295 }
2296 } else
2297 printf("\nDevice name is not provided.\n"
2298 "You can pass devicename[,opt1=val1[,opt2=val2...]] as an argument.\n\n");
2299 return 0;
2300 }
2301
show_sources(void * optctx,const char * opt,const char * arg)2302 int show_sources(void *optctx, const char *opt, const char *arg)
2303 {
2304 AVInputFormat *fmt = NULL;
2305 char *dev = NULL;
2306 AVDictionary *opts = NULL;
2307 int ret = 0;
2308 int error_level = av_log_get_level();
2309
2310 av_log_set_level(AV_LOG_WARNING);
2311
2312 if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0)
2313 goto fail;
2314
2315 do {
2316 fmt = av_input_audio_device_next(fmt);
2317 if (fmt) {
2318 if (!strcmp(fmt->name, "lavfi"))
2319 continue; //it's pointless to probe lavfi
2320 if (dev && !av_match_name(dev, fmt->name))
2321 continue;
2322 print_device_sources(fmt, opts);
2323 }
2324 } while (fmt);
2325 do {
2326 fmt = av_input_video_device_next(fmt);
2327 if (fmt) {
2328 if (dev && !av_match_name(dev, fmt->name))
2329 continue;
2330 print_device_sources(fmt, opts);
2331 }
2332 } while (fmt);
2333 fail:
2334 av_dict_free(&opts);
2335 av_free(dev);
2336 av_log_set_level(error_level);
2337 return ret;
2338 }
2339
show_sinks(void * optctx,const char * opt,const char * arg)2340 int show_sinks(void *optctx, const char *opt, const char *arg)
2341 {
2342 AVOutputFormat *fmt = NULL;
2343 char *dev = NULL;
2344 AVDictionary *opts = NULL;
2345 int ret = 0;
2346 int error_level = av_log_get_level();
2347
2348 av_log_set_level(AV_LOG_WARNING);
2349
2350 if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0)
2351 goto fail;
2352
2353 do {
2354 fmt = av_output_audio_device_next(fmt);
2355 if (fmt) {
2356 if (dev && !av_match_name(dev, fmt->name))
2357 continue;
2358 print_device_sinks(fmt, opts);
2359 }
2360 } while (fmt);
2361 do {
2362 fmt = av_output_video_device_next(fmt);
2363 if (fmt) {
2364 if (dev && !av_match_name(dev, fmt->name))
2365 continue;
2366 print_device_sinks(fmt, opts);
2367 }
2368 } while (fmt);
2369 fail:
2370 av_dict_free(&opts);
2371 av_free(dev);
2372 av_log_set_level(error_level);
2373 return ret;
2374 }
2375
2376 #endif
2377