2c37880d74e2d8d70ded8e6a163d750315d671db
[libav.git] / cmdutils.c
1 /*
2 * Various utilities for command line tools
3 * Copyright (c) 2000-2003 Fabrice Bellard
4 *
5 * This file is part of Libav.
6 *
7 * Libav 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 * Libav 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 Libav; 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 only the enabled headers since some compilers (namely, Sun
28 Studio) will not omit unused inline functions and create undefined
29 references to libraries that are not being built. */
30
31 #include "config.h"
32 #include "libavformat/avformat.h"
33 #include "libavfilter/avfilter.h"
34 #include "libavdevice/avdevice.h"
35 #include "libswscale/swscale.h"
36 #include "libpostproc/postprocess.h"
37 #include "libavutil/avstring.h"
38 #include "libavutil/parseutils.h"
39 #include "libavutil/pixdesc.h"
40 #include "libavutil/eval.h"
41 #include "libavutil/dict.h"
42 #include "libavutil/opt.h"
43 #include "cmdutils.h"
44 #include "version.h"
45 #if CONFIG_NETWORK
46 #include "libavformat/network.h"
47 #endif
48 #if HAVE_SYS_RESOURCE_H
49 #include <sys/resource.h>
50 #endif
51
52 struct SwsContext *sws_opts;
53 AVDictionary *format_opts, *codec_opts;
54
55 static const int this_year = 2011;
56
57 void init_opts(void)
58 {
59 #if CONFIG_SWSCALE
60 sws_opts = sws_getContext(16, 16, 0, 16, 16, 0, SWS_BICUBIC, NULL, NULL, NULL);
61 #endif
62 }
63
64 void uninit_opts(void)
65 {
66 #if CONFIG_SWSCALE
67 sws_freeContext(sws_opts);
68 sws_opts = NULL;
69 #endif
70 av_dict_free(&format_opts);
71 av_dict_free(&codec_opts);
72 }
73
74 void log_callback_help(void* ptr, int level, const char* fmt, va_list vl)
75 {
76 vfprintf(stdout, fmt, vl);
77 }
78
79 double parse_number_or_die(const char *context, const char *numstr, int type, double min, double max)
80 {
81 char *tail;
82 const char *error;
83 double d = av_strtod(numstr, &tail);
84 if (*tail)
85 error= "Expected number for %s but found: %s\n";
86 else if (d < min || d > max)
87 error= "The value for %s was %s which is not within %f - %f\n";
88 else if(type == OPT_INT64 && (int64_t)d != d)
89 error= "Expected int64 for %s but found %s\n";
90 else if (type == OPT_INT && (int)d != d)
91 error= "Expected int for %s but found %s\n";
92 else
93 return d;
94 av_log(NULL, AV_LOG_FATAL, error, context, numstr, min, max);
95 exit_program(1);
96 return 0;
97 }
98
99 int64_t parse_time_or_die(const char *context, const char *timestr, int is_duration)
100 {
101 int64_t us;
102 if (av_parse_time(&us, timestr, is_duration) < 0) {
103 av_log(NULL, AV_LOG_FATAL, "Invalid %s specification for %s: %s\n",
104 is_duration ? "duration" : "date", context, timestr);
105 exit_program(1);
106 }
107 return us;
108 }
109
110 void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
111 {
112 const OptionDef *po;
113 int first;
114
115 first = 1;
116 for(po = options; po->name != NULL; po++) {
117 char buf[64];
118 if ((po->flags & mask) == value) {
119 if (first) {
120 printf("%s", msg);
121 first = 0;
122 }
123 av_strlcpy(buf, po->name, sizeof(buf));
124 if (po->flags & HAS_ARG) {
125 av_strlcat(buf, " ", sizeof(buf));
126 av_strlcat(buf, po->argname, sizeof(buf));
127 }
128 printf("-%-17s %s\n", buf, po->help);
129 }
130 }
131 }
132
133 static const OptionDef* find_option(const OptionDef *po, const char *name){
134 const char *p = strchr(name, ':');
135 int len = p ? p - name : strlen(name);
136
137 while (po->name != NULL) {
138 if (!strncmp(name, po->name, len) && strlen(po->name) == len)
139 break;
140 po++;
141 }
142 return po;
143 }
144
145 #if defined(_WIN32) && !defined(__MINGW32CE__)
146 #include <windows.h>
147 /* Will be leaked on exit */
148 static char** win32_argv_utf8 = NULL;
149 static int win32_argc = 0;
150
151 /**
152 * Prepare command line arguments for executable.
153 * For Windows - perform wide-char to UTF-8 conversion.
154 * Input arguments should be main() function arguments.
155 * @param argc_ptr Arguments number (including executable)
156 * @param argv_ptr Arguments list.
157 */
158 static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
159 {
160 char *argstr_flat;
161 wchar_t **argv_w;
162 int i, buffsize = 0, offset = 0;
163
164 if (win32_argv_utf8) {
165 *argc_ptr = win32_argc;
166 *argv_ptr = win32_argv_utf8;
167 return;
168 }
169
170 win32_argc = 0;
171 argv_w = CommandLineToArgvW(GetCommandLineW(), &win32_argc);
172 if (win32_argc <= 0 || !argv_w)
173 return;
174
175 /* determine the UTF-8 buffer size (including NULL-termination symbols) */
176 for (i = 0; i < win32_argc; i++)
177 buffsize += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
178 NULL, 0, NULL, NULL);
179
180 win32_argv_utf8 = av_mallocz(sizeof(char*) * (win32_argc + 1) + buffsize);
181 argstr_flat = (char*)win32_argv_utf8 + sizeof(char*) * (win32_argc + 1);
182 if (win32_argv_utf8 == NULL) {
183 LocalFree(argv_w);
184 return;
185 }
186
187 for (i = 0; i < win32_argc; i++) {
188 win32_argv_utf8[i] = &argstr_flat[offset];
189 offset += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
190 &argstr_flat[offset],
191 buffsize - offset, NULL, NULL);
192 }
193 win32_argv_utf8[i] = NULL;
194 LocalFree(argv_w);
195
196 *argc_ptr = win32_argc;
197 *argv_ptr = win32_argv_utf8;
198 }
199 #else
200 static inline void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
201 {
202 /* nothing to do */
203 }
204 #endif /* WIN32 && !__MINGW32CE__ */
205
206 int parse_option(void *optctx, const char *opt, const char *arg, const OptionDef *options)
207 {
208 const OptionDef *po;
209 int bool_val = 1;
210 int *dstcount;
211 void *dst;
212
213 po = find_option(options, opt);
214 if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
215 /* handle 'no' bool option */
216 po = find_option(options, opt + 2);
217 if (!(po->name && (po->flags & OPT_BOOL)))
218 goto unknown_opt;
219 bool_val = 0;
220 }
221 if (!po->name)
222 po = find_option(options, "default");
223 if (!po->name) {
224 unknown_opt:
225 av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt);
226 return AVERROR(EINVAL);
227 }
228 if (po->flags & HAS_ARG && !arg) {
229 av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'\n", opt);
230 return AVERROR(EINVAL);
231 }
232
233 /* new-style options contain an offset into optctx, old-style address of
234 * a global var*/
235 dst = po->flags & (OPT_OFFSET|OPT_SPEC) ? (uint8_t*)optctx + po->u.off : po->u.dst_ptr;
236
237 if (po->flags & OPT_SPEC) {
238 SpecifierOpt **so = dst;
239 char *p = strchr(opt, ':');
240
241 dstcount = (int*)(so + 1);
242 *so = grow_array(*so, sizeof(**so), dstcount, *dstcount + 1);
243 (*so)[*dstcount - 1].specifier = av_strdup(p ? p + 1 : "");
244 dst = &(*so)[*dstcount - 1].u;
245 }
246
247 if (po->flags & OPT_STRING) {
248 char *str;
249 str = av_strdup(arg);
250 *(char**)dst = str;
251 } else if (po->flags & OPT_BOOL) {
252 *(int*)dst = bool_val;
253 } else if (po->flags & OPT_INT) {
254 *(int*)dst = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
255 } else if (po->flags & OPT_INT64) {
256 *(int64_t*)dst = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
257 } else if (po->flags & OPT_TIME) {
258 *(int64_t*)dst = parse_time_or_die(opt, arg, 1);
259 } else if (po->flags & OPT_FLOAT) {
260 *(float*)dst = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
261 } else if (po->flags & OPT_DOUBLE) {
262 *(double*)dst = parse_number_or_die(opt, arg, OPT_DOUBLE, -INFINITY, INFINITY);
263 } else if (po->u.func_arg) {
264 int ret = po->flags & OPT_FUNC2 ? po->u.func2_arg(optctx, opt, arg) :
265 po->u.func_arg(opt, arg);
266 if (ret < 0) {
267 av_log(NULL, AV_LOG_ERROR, "Failed to set value '%s' for option '%s'\n", arg, opt);
268 return ret;
269 }
270 }
271 if (po->flags & OPT_EXIT)
272 exit_program(0);
273 return !!(po->flags & HAS_ARG);
274 }
275
276 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
277 void (* parse_arg_function)(void *, const char*))
278 {
279 const char *opt;
280 int optindex, handleoptions = 1, ret;
281
282 /* perform system-dependent conversions for arguments list */
283 prepare_app_arguments(&argc, &argv);
284
285 /* parse options */
286 optindex = 1;
287 while (optindex < argc) {
288 opt = argv[optindex++];
289
290 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
291 if (opt[1] == '-' && opt[2] == '\0') {
292 handleoptions = 0;
293 continue;
294 }
295 opt++;
296
297 if ((ret = parse_option(optctx, opt, argv[optindex], options)) < 0)
298 exit_program(1);
299 optindex += ret;
300 } else {
301 if (parse_arg_function)
302 parse_arg_function(optctx, opt);
303 }
304 }
305 }
306
307 /*
308 * Return index of option opt in argv or 0 if not found.
309 */
310 static int locate_option(int argc, char **argv, const OptionDef *options, const char *optname)
311 {
312 const OptionDef *po;
313 int i;
314
315 for (i = 1; i < argc; i++) {
316 const char *cur_opt = argv[i];
317
318 if (*cur_opt++ != '-')
319 continue;
320
321 po = find_option(options, cur_opt);
322 if (!po->name && cur_opt[0] == 'n' && cur_opt[1] == 'o')
323 po = find_option(options, cur_opt + 2);
324
325 if ((!po->name && !strcmp(cur_opt, optname)) ||
326 (po->name && !strcmp(optname, po->name)))
327 return i;
328
329 if (!po || po->flags & HAS_ARG)
330 i++;
331 }
332 return 0;
333 }
334
335 void parse_loglevel(int argc, char **argv, const OptionDef *options)
336 {
337 int idx = locate_option(argc, argv, options, "loglevel");
338 if (idx && argv[idx + 1])
339 opt_loglevel("loglevel", argv[idx + 1]);
340 }
341
342 #define FLAGS (o->type == FF_OPT_TYPE_FLAGS) ? AV_DICT_APPEND : 0
343 int opt_default(const char *opt, const char *arg)
344 {
345 const AVOption *o;
346 char opt_stripped[128];
347 const char *p;
348 const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class(), *sc = sws_get_class();
349
350 if (!(p = strchr(opt, ':')))
351 p = opt + strlen(opt);
352 av_strlcpy(opt_stripped, opt, FFMIN(sizeof(opt_stripped), p - opt + 1));
353
354 if ((o = av_opt_find(&cc, opt_stripped, NULL, 0, AV_OPT_SEARCH_CHILDREN|AV_OPT_SEARCH_FAKE_OBJ)) ||
355 ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') &&
356 (o = av_opt_find(&cc, opt+1, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ))))
357 av_dict_set(&codec_opts, opt, arg, FLAGS);
358 else if ((o = av_opt_find(&fc, opt, NULL, 0, AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)))
359 av_dict_set(&format_opts, opt, arg, FLAGS);
360 else if ((o = av_opt_find(&sc, opt, NULL, 0, AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
361 // XXX we only support sws_flags, not arbitrary sws options
362 int ret = av_set_string3(sws_opts, opt, arg, 1, NULL);
363 if (ret < 0) {
364 av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
365 return ret;
366 }
367 }
368
369 if (o)
370 return 0;
371 av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt);
372 return AVERROR_OPTION_NOT_FOUND;
373 }
374
375 int opt_loglevel(const char *opt, const char *arg)
376 {
377 const struct { const char *name; int level; } log_levels[] = {
378 { "quiet" , AV_LOG_QUIET },
379 { "panic" , AV_LOG_PANIC },
380 { "fatal" , AV_LOG_FATAL },
381 { "error" , AV_LOG_ERROR },
382 { "warning", AV_LOG_WARNING },
383 { "info" , AV_LOG_INFO },
384 { "verbose", AV_LOG_VERBOSE },
385 { "debug" , AV_LOG_DEBUG },
386 };
387 char *tail;
388 int level;
389 int i;
390
391 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
392 if (!strcmp(log_levels[i].name, arg)) {
393 av_log_set_level(log_levels[i].level);
394 return 0;
395 }
396 }
397
398 level = strtol(arg, &tail, 10);
399 if (*tail) {
400 av_log(NULL, AV_LOG_FATAL, "Invalid loglevel \"%s\". "
401 "Possible levels are numbers or:\n", arg);
402 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
403 av_log(NULL, AV_LOG_FATAL, "\"%s\"\n", log_levels[i].name);
404 exit_program(1);
405 }
406 av_log_set_level(level);
407 return 0;
408 }
409
410 int opt_timelimit(const char *opt, const char *arg)
411 {
412 #if HAVE_SETRLIMIT
413 int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
414 struct rlimit rl = { lim, lim + 1 };
415 if (setrlimit(RLIMIT_CPU, &rl))
416 perror("setrlimit");
417 #else
418 av_log(NULL, AV_LOG_WARNING, "-%s not implemented on this OS\n", opt);
419 #endif
420 return 0;
421 }
422
423 void print_error(const char *filename, int err)
424 {
425 char errbuf[128];
426 const char *errbuf_ptr = errbuf;
427
428 if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
429 errbuf_ptr = strerror(AVUNERROR(err));
430 av_log(NULL, AV_LOG_ERROR, "%s: %s\n", filename, errbuf_ptr);
431 }
432
433 static int warned_cfg = 0;
434
435 #define INDENT 1
436 #define SHOW_VERSION 2
437 #define SHOW_CONFIG 4
438
439 #define PRINT_LIB_INFO(libname, LIBNAME, flags, level) \
440 if (CONFIG_##LIBNAME) { \
441 const char *indent = flags & INDENT? " " : ""; \
442 if (flags & SHOW_VERSION) { \
443 unsigned int version = libname##_version(); \
444 av_log(NULL, level, "%slib%-9s %2d.%3d.%2d / %2d.%3d.%2d\n",\
445 indent, #libname, \
446 LIB##LIBNAME##_VERSION_MAJOR, \
447 LIB##LIBNAME##_VERSION_MINOR, \
448 LIB##LIBNAME##_VERSION_MICRO, \
449 version >> 16, version >> 8 & 0xff, version & 0xff); \
450 } \
451 if (flags & SHOW_CONFIG) { \
452 const char *cfg = libname##_configuration(); \
453 if (strcmp(LIBAV_CONFIGURATION, cfg)) { \
454 if (!warned_cfg) { \
455 av_log(NULL, level, \
456 "%sWARNING: library configuration mismatch\n", \
457 indent); \
458 warned_cfg = 1; \
459 } \
460 av_log(NULL, level, "%s%-11s configuration: %s\n", \
461 indent, #libname, cfg); \
462 } \
463 } \
464 } \
465
466 static void print_all_libs_info(int flags, int level)
467 {
468 PRINT_LIB_INFO(avutil, AVUTIL, flags, level);
469 PRINT_LIB_INFO(avcodec, AVCODEC, flags, level);
470 PRINT_LIB_INFO(avformat, AVFORMAT, flags, level);
471 PRINT_LIB_INFO(avdevice, AVDEVICE, flags, level);
472 PRINT_LIB_INFO(avfilter, AVFILTER, flags, level);
473 PRINT_LIB_INFO(swscale, SWSCALE, flags, level);
474 PRINT_LIB_INFO(postproc, POSTPROC, flags, level);
475 }
476
477 void show_banner(void)
478 {
479 av_log(NULL, AV_LOG_INFO, "%s version " LIBAV_VERSION ", Copyright (c) %d-%d the Libav developers\n",
480 program_name, program_birth_year, this_year);
481 av_log(NULL, AV_LOG_INFO, " built on %s %s with %s %s\n",
482 __DATE__, __TIME__, CC_TYPE, CC_VERSION);
483 av_log(NULL, AV_LOG_VERBOSE, " configuration: " LIBAV_CONFIGURATION "\n");
484 print_all_libs_info(INDENT|SHOW_CONFIG, AV_LOG_VERBOSE);
485 print_all_libs_info(INDENT|SHOW_VERSION, AV_LOG_VERBOSE);
486 }
487
488 void show_version(void) {
489 av_log_set_callback(log_callback_help);
490 printf("%s " LIBAV_VERSION "\n", program_name);
491 print_all_libs_info(SHOW_VERSION, AV_LOG_INFO);
492 }
493
494 void show_license(void)
495 {
496 printf(
497 #if CONFIG_NONFREE
498 "This version of %s has nonfree parts compiled in.\n"
499 "Therefore it is not legally redistributable.\n",
500 program_name
501 #elif CONFIG_GPLV3
502 "%s is free software; you can redistribute it and/or modify\n"
503 "it under the terms of the GNU General Public License as published by\n"
504 "the Free Software Foundation; either version 3 of the License, or\n"
505 "(at your option) any later version.\n"
506 "\n"
507 "%s is distributed in the hope that it will be useful,\n"
508 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
509 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
510 "GNU General Public License for more details.\n"
511 "\n"
512 "You should have received a copy of the GNU General Public License\n"
513 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
514 program_name, program_name, program_name
515 #elif CONFIG_GPL
516 "%s is free software; you can redistribute it and/or modify\n"
517 "it under the terms of the GNU General Public License as published by\n"
518 "the Free Software Foundation; either version 2 of the License, or\n"
519 "(at your option) any later version.\n"
520 "\n"
521 "%s is distributed in the hope that it will be useful,\n"
522 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
523 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
524 "GNU General Public License for more details.\n"
525 "\n"
526 "You should have received a copy of the GNU General Public License\n"
527 "along with %s; if not, write to the Free Software\n"
528 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
529 program_name, program_name, program_name
530 #elif CONFIG_LGPLV3
531 "%s is free software; you can redistribute it and/or modify\n"
532 "it under the terms of the GNU Lesser General Public License as published by\n"
533 "the Free Software Foundation; either version 3 of the License, or\n"
534 "(at your option) any later version.\n"
535 "\n"
536 "%s is distributed in the hope that it will be useful,\n"
537 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
538 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
539 "GNU Lesser General Public License for more details.\n"
540 "\n"
541 "You should have received a copy of the GNU Lesser General Public License\n"
542 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
543 program_name, program_name, program_name
544 #else
545 "%s is free software; you can redistribute it and/or\n"
546 "modify it under the terms of the GNU Lesser General Public\n"
547 "License as published by the Free Software Foundation; either\n"
548 "version 2.1 of the License, or (at your option) any later version.\n"
549 "\n"
550 "%s is distributed in the hope that it will be useful,\n"
551 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
552 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
553 "Lesser General Public License for more details.\n"
554 "\n"
555 "You should have received a copy of the GNU Lesser General Public\n"
556 "License along with %s; if not, write to the Free Software\n"
557 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
558 program_name, program_name, program_name
559 #endif
560 );
561 }
562
563 void show_formats(void)
564 {
565 AVInputFormat *ifmt=NULL;
566 AVOutputFormat *ofmt=NULL;
567 const char *last_name;
568
569 printf(
570 "File formats:\n"
571 " D. = Demuxing supported\n"
572 " .E = Muxing supported\n"
573 " --\n");
574 last_name= "000";
575 for(;;){
576 int decode=0;
577 int encode=0;
578 const char *name=NULL;
579 const char *long_name=NULL;
580
581 while((ofmt= av_oformat_next(ofmt))) {
582 if((name == NULL || strcmp(ofmt->name, name)<0) &&
583 strcmp(ofmt->name, last_name)>0){
584 name= ofmt->name;
585 long_name= ofmt->long_name;
586 encode=1;
587 }
588 }
589 while((ifmt= av_iformat_next(ifmt))) {
590 if((name == NULL || strcmp(ifmt->name, name)<0) &&
591 strcmp(ifmt->name, last_name)>0){
592 name= ifmt->name;
593 long_name= ifmt->long_name;
594 encode=0;
595 }
596 if(name && strcmp(ifmt->name, name)==0)
597 decode=1;
598 }
599 if(name==NULL)
600 break;
601 last_name= name;
602
603 printf(
604 " %s%s %-15s %s\n",
605 decode ? "D":" ",
606 encode ? "E":" ",
607 name,
608 long_name ? long_name:" ");
609 }
610 }
611
612 void show_codecs(void)
613 {
614 AVCodec *p=NULL, *p2;
615 const char *last_name;
616 printf(
617 "Codecs:\n"
618 " D..... = Decoding supported\n"
619 " .E.... = Encoding supported\n"
620 " ..V... = Video codec\n"
621 " ..A... = Audio codec\n"
622 " ..S... = Subtitle codec\n"
623 " ...S.. = Supports draw_horiz_band\n"
624 " ....D. = Supports direct rendering method 1\n"
625 " .....T = Supports weird frame truncation\n"
626 " ------\n");
627 last_name= "000";
628 for(;;){
629 int decode=0;
630 int encode=0;
631 int cap=0;
632 const char *type_str;
633
634 p2=NULL;
635 while((p= av_codec_next(p))) {
636 if((p2==NULL || strcmp(p->name, p2->name)<0) &&
637 strcmp(p->name, last_name)>0){
638 p2= p;
639 decode= encode= cap=0;
640 }
641 if(p2 && strcmp(p->name, p2->name)==0){
642 if(p->decode) decode=1;
643 if(p->encode) encode=1;
644 cap |= p->capabilities;
645 }
646 }
647 if(p2==NULL)
648 break;
649 last_name= p2->name;
650
651 switch(p2->type) {
652 case AVMEDIA_TYPE_VIDEO:
653 type_str = "V";
654 break;
655 case AVMEDIA_TYPE_AUDIO:
656 type_str = "A";
657 break;
658 case AVMEDIA_TYPE_SUBTITLE:
659 type_str = "S";
660 break;
661 default:
662 type_str = "?";
663 break;
664 }
665 printf(
666 " %s%s%s%s%s%s %-15s %s",
667 decode ? "D": (/*p2->decoder ? "d":*/" "),
668 encode ? "E":" ",
669 type_str,
670 cap & CODEC_CAP_DRAW_HORIZ_BAND ? "S":" ",
671 cap & CODEC_CAP_DR1 ? "D":" ",
672 cap & CODEC_CAP_TRUNCATED ? "T":" ",
673 p2->name,
674 p2->long_name ? p2->long_name : "");
675 /* if(p2->decoder && decode==0)
676 printf(" use %s for decoding", p2->decoder->name);*/
677 printf("\n");
678 }
679 printf("\n");
680 printf(
681 "Note, the names of encoders and decoders do not always match, so there are\n"
682 "several cases where the above table shows encoder only or decoder only entries\n"
683 "even though both encoding and decoding are supported. For example, the h263\n"
684 "decoder corresponds to the h263 and h263p encoders, for file formats it is even\n"
685 "worse.\n");
686 }
687
688 void show_bsfs(void)
689 {
690 AVBitStreamFilter *bsf=NULL;
691
692 printf("Bitstream filters:\n");
693 while((bsf = av_bitstream_filter_next(bsf)))
694 printf("%s\n", bsf->name);
695 printf("\n");
696 }
697
698 void show_protocols(void)
699 {
700 void *opaque = NULL;
701 const char *name;
702
703 printf("Supported file protocols:\n"
704 "Input:\n");
705 while ((name = avio_enum_protocols(&opaque, 0)))
706 printf("%s\n", name);
707 printf("Output:\n");
708 while ((name = avio_enum_protocols(&opaque, 1)))
709 printf("%s\n", name);
710 }
711
712 void show_filters(void)
713 {
714 AVFilter av_unused(**filter) = NULL;
715
716 printf("Filters:\n");
717 #if CONFIG_AVFILTER
718 while ((filter = av_filter_next(filter)) && *filter)
719 printf("%-16s %s\n", (*filter)->name, (*filter)->description);
720 #endif
721 }
722
723 void show_pix_fmts(void)
724 {
725 enum PixelFormat pix_fmt;
726
727 printf(
728 "Pixel formats:\n"
729 "I.... = Supported Input format for conversion\n"
730 ".O... = Supported Output format for conversion\n"
731 "..H.. = Hardware accelerated format\n"
732 "...P. = Paletted format\n"
733 "....B = Bitstream format\n"
734 "FLAGS NAME NB_COMPONENTS BITS_PER_PIXEL\n"
735 "-----\n");
736
737 #if !CONFIG_SWSCALE
738 # define sws_isSupportedInput(x) 0
739 # define sws_isSupportedOutput(x) 0
740 #endif
741
742 for (pix_fmt = 0; pix_fmt < PIX_FMT_NB; pix_fmt++) {
743 const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[pix_fmt];
744 printf("%c%c%c%c%c %-16s %d %2d\n",
745 sws_isSupportedInput (pix_fmt) ? 'I' : '.',
746 sws_isSupportedOutput(pix_fmt) ? 'O' : '.',
747 pix_desc->flags & PIX_FMT_HWACCEL ? 'H' : '.',
748 pix_desc->flags & PIX_FMT_PAL ? 'P' : '.',
749 pix_desc->flags & PIX_FMT_BITSTREAM ? 'B' : '.',
750 pix_desc->name,
751 pix_desc->nb_components,
752 av_get_bits_per_pixel(pix_desc));
753 }
754 }
755
756 int show_sample_fmts(const char *opt, const char *arg)
757 {
758 int i;
759 char fmt_str[128];
760 for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
761 printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
762 return 0;
763 }
764
765 int read_yesno(void)
766 {
767 int c = getchar();
768 int yesno = (toupper(c) == 'Y');
769
770 while (c != '\n' && c != EOF)
771 c = getchar();
772
773 return yesno;
774 }
775
776 int read_file(const char *filename, char **bufptr, size_t *size)
777 {
778 FILE *f = fopen(filename, "rb");
779
780 if (!f) {
781 av_log(NULL, AV_LOG_ERROR, "Cannot read file '%s': %s\n", filename, strerror(errno));
782 return AVERROR(errno);
783 }
784 fseek(f, 0, SEEK_END);
785 *size = ftell(f);
786 fseek(f, 0, SEEK_SET);
787 *bufptr = av_malloc(*size + 1);
788 if (!*bufptr) {
789 av_log(NULL, AV_LOG_ERROR, "Could not allocate file buffer\n");
790 fclose(f);
791 return AVERROR(ENOMEM);
792 }
793 fread(*bufptr, 1, *size, f);
794 (*bufptr)[*size++] = '\0';
795
796 fclose(f);
797 return 0;
798 }
799
800 void init_pts_correction(PtsCorrectionContext *ctx)
801 {
802 ctx->num_faulty_pts = ctx->num_faulty_dts = 0;
803 ctx->last_pts = ctx->last_dts = INT64_MIN;
804 }
805
806 int64_t guess_correct_pts(PtsCorrectionContext *ctx, int64_t reordered_pts, int64_t dts)
807 {
808 int64_t pts = AV_NOPTS_VALUE;
809
810 if (dts != AV_NOPTS_VALUE) {
811 ctx->num_faulty_dts += dts <= ctx->last_dts;
812 ctx->last_dts = dts;
813 }
814 if (reordered_pts != AV_NOPTS_VALUE) {
815 ctx->num_faulty_pts += reordered_pts <= ctx->last_pts;
816 ctx->last_pts = reordered_pts;
817 }
818 if ((ctx->num_faulty_pts<=ctx->num_faulty_dts || dts == AV_NOPTS_VALUE)
819 && reordered_pts != AV_NOPTS_VALUE)
820 pts = reordered_pts;
821 else
822 pts = dts;
823
824 return pts;
825 }
826
827 FILE *get_preset_file(char *filename, size_t filename_size,
828 const char *preset_name, int is_path, const char *codec_name)
829 {
830 FILE *f = NULL;
831 int i;
832 const char *base[3]= { getenv("AVCONV_DATADIR"),
833 getenv("HOME"),
834 AVCONV_DATADIR,
835 };
836
837 if (is_path) {
838 av_strlcpy(filename, preset_name, filename_size);
839 f = fopen(filename, "r");
840 } else {
841 for (i = 0; i < 3 && !f; i++) {
842 if (!base[i])
843 continue;
844 snprintf(filename, filename_size, "%s%s/%s.ffpreset", base[i], i != 1 ? "" : "/.avconv", preset_name);
845 f = fopen(filename, "r");
846 if (!f && codec_name) {
847 snprintf(filename, filename_size,
848 "%s%s/%s-%s.ffpreset", base[i], i != 1 ? "" : "/.avconv", codec_name, preset_name);
849 f = fopen(filename, "r");
850 }
851 }
852 }
853
854 return f;
855 }
856
857 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
858 {
859 if (*spec <= '9' && *spec >= '0') /* opt:index */
860 return strtol(spec, NULL, 0) == st->index;
861 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' || *spec == 't') { /* opt:[vasdt] */
862 enum AVMediaType type;
863
864 switch (*spec++) {
865 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
866 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
867 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
868 case 'd': type = AVMEDIA_TYPE_DATA; break;
869 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
870 }
871 if (type != st->codec->codec_type)
872 return 0;
873 if (*spec++ == ':') { /* possibly followed by :index */
874 int i, index = strtol(spec, NULL, 0);
875 for (i = 0; i < s->nb_streams; i++)
876 if (s->streams[i]->codec->codec_type == type && index-- == 0)
877 return i == st->index;
878 return 0;
879 }
880 return 1;
881 } else if (*spec == 'p' && *(spec + 1) == ':') {
882 int prog_id, i, j;
883 char *endptr;
884 spec += 2;
885 prog_id = strtol(spec, &endptr, 0);
886 for (i = 0; i < s->nb_programs; i++) {
887 if (s->programs[i]->id != prog_id)
888 continue;
889
890 if (*endptr++ == ':') {
891 int stream_idx = strtol(endptr, NULL, 0);
892 return (stream_idx >= 0 && stream_idx < s->programs[i]->nb_stream_indexes &&
893 st->index == s->programs[i]->stream_index[stream_idx]);
894 }
895
896 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
897 if (st->index == s->programs[i]->stream_index[j])
898 return 1;
899 }
900 return 0;
901 } else if (!*spec) /* empty specifier, matches everything */
902 return 1;
903
904 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
905 return AVERROR(EINVAL);
906 }
907
908 AVDictionary *filter_codec_opts(AVDictionary *opts, enum CodecID codec_id, AVFormatContext *s, AVStream *st)
909 {
910 AVDictionary *ret = NULL;
911 AVDictionaryEntry *t = NULL;
912 AVCodec *codec = s->oformat ? avcodec_find_encoder(codec_id) : avcodec_find_decoder(codec_id);
913 int flags = s->oformat ? AV_OPT_FLAG_ENCODING_PARAM : AV_OPT_FLAG_DECODING_PARAM;
914 char prefix = 0;
915 const AVClass *cc = avcodec_get_class();
916
917 if (!codec)
918 return NULL;
919
920 switch (codec->type) {
921 case AVMEDIA_TYPE_VIDEO: prefix = 'v'; flags |= AV_OPT_FLAG_VIDEO_PARAM; break;
922 case AVMEDIA_TYPE_AUDIO: prefix = 'a'; flags |= AV_OPT_FLAG_AUDIO_PARAM; break;
923 case AVMEDIA_TYPE_SUBTITLE: prefix = 's'; flags |= AV_OPT_FLAG_SUBTITLE_PARAM; break;
924 }
925
926 while (t = av_dict_get(opts, "", t, AV_DICT_IGNORE_SUFFIX)) {
927 char *p = strchr(t->key, ':');
928
929 /* check stream specification in opt name */
930 if (p)
931 switch (check_stream_specifier(s, st, p + 1)) {
932 case 1: *p = 0; break;
933 case 0: continue;
934 default: return NULL;
935 }
936
937 if (av_opt_find(&cc, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ) ||
938 (codec && codec->priv_class && av_opt_find(&codec->priv_class, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ)))
939 av_dict_set(&ret, t->key, t->value, 0);
940 else if (t->key[0] == prefix && av_opt_find(&cc, t->key+1, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ))
941 av_dict_set(&ret, t->key+1, t->value, 0);
942
943 if (p)
944 *p = ':';
945 }
946 return ret;
947 }
948
949 AVDictionary **setup_find_stream_info_opts(AVFormatContext *s, AVDictionary *codec_opts)
950 {
951 int i;
952 AVDictionary **opts;
953
954 if (!s->nb_streams)
955 return NULL;
956 opts = av_mallocz(s->nb_streams * sizeof(*opts));
957 if (!opts) {
958 av_log(NULL, AV_LOG_ERROR, "Could not alloc memory for stream options.\n");
959 return NULL;
960 }
961 for (i = 0; i < s->nb_streams; i++)
962 opts[i] = filter_codec_opts(codec_opts, s->streams[i]->codec->codec_id, s, s->streams[i]);
963 return opts;
964 }
965
966 #if CONFIG_AVFILTER
967
968 static int ffsink_init(AVFilterContext *ctx, const char *args, void *opaque)
969 {
970 FFSinkContext *priv = ctx->priv;
971
972 if (!opaque)
973 return AVERROR(EINVAL);
974 *priv = *(FFSinkContext *)opaque;
975
976 return 0;
977 }
978
979 static void null_end_frame(AVFilterLink *inlink) { }
980
981 static int ffsink_query_formats(AVFilterContext *ctx)
982 {
983 FFSinkContext *priv = ctx->priv;
984 enum PixelFormat pix_fmts[] = { priv->pix_fmt, PIX_FMT_NONE };
985
986 avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
987 return 0;
988 }
989
990 AVFilter ffsink = {
991 .name = "ffsink",
992 .priv_size = sizeof(FFSinkContext),
993 .init = ffsink_init,
994
995 .query_formats = ffsink_query_formats,
996
997 .inputs = (AVFilterPad[]) {{ .name = "default",
998 .type = AVMEDIA_TYPE_VIDEO,
999 .end_frame = null_end_frame,
1000 .min_perms = AV_PERM_READ, },
1001 { .name = NULL }},
1002 .outputs = (AVFilterPad[]) {{ .name = NULL }},
1003 };
1004
1005 int get_filtered_video_frame(AVFilterContext *ctx, AVFrame *frame,
1006 AVFilterBufferRef **picref_ptr, AVRational *tb)
1007 {
1008 int ret;
1009 AVFilterBufferRef *picref;
1010
1011 if ((ret = avfilter_request_frame(ctx->inputs[0])) < 0)
1012 return ret;
1013 if (!(picref = ctx->inputs[0]->cur_buf))
1014 return AVERROR(ENOENT);
1015 *picref_ptr = picref;
1016 ctx->inputs[0]->cur_buf = NULL;
1017 *tb = ctx->inputs[0]->time_base;
1018
1019 memcpy(frame->data, picref->data, sizeof(frame->data));
1020 memcpy(frame->linesize, picref->linesize, sizeof(frame->linesize));
1021 frame->interlaced_frame = picref->video->interlaced;
1022 frame->top_field_first = picref->video->top_field_first;
1023 frame->key_frame = picref->video->key_frame;
1024 frame->pict_type = picref->video->pict_type;
1025
1026 return 1;
1027 }
1028
1029 #endif /* CONFIG_AVFILTER */
1030
1031 void *grow_array(void *array, int elem_size, int *size, int new_size)
1032 {
1033 if (new_size >= INT_MAX / elem_size) {
1034 av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
1035 exit_program(1);
1036 }
1037 if (*size < new_size) {
1038 uint8_t *tmp = av_realloc(array, new_size*elem_size);
1039 if (!tmp) {
1040 av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
1041 exit_program(1);
1042 }
1043 memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
1044 *size = new_size;
1045 return tmp;
1046 }
1047 return array;
1048 }