cmdutils: add support for caller-provided option context.
[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 fprintf(stderr, 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 fprintf(stderr, "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 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
207 void (* parse_arg_function)(void *, const char*))
208 {
209 const char *opt, *arg;
210 int optindex, handleoptions=1;
211 const OptionDef *po;
212
213 /* perform system-dependent conversions for arguments list */
214 prepare_app_arguments(&argc, &argv);
215
216 /* parse options */
217 optindex = 1;
218 while (optindex < argc) {
219 void *dst;
220 opt = argv[optindex++];
221
222 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
223 int bool_val = 1;
224 if (opt[1] == '-' && opt[2] == '\0') {
225 handleoptions = 0;
226 continue;
227 }
228 opt++;
229 po= find_option(options, opt);
230 if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
231 /* handle 'no' bool option */
232 po = find_option(options, opt + 2);
233 if (!(po->name && (po->flags & OPT_BOOL)))
234 goto unknown_opt;
235 bool_val = 0;
236 }
237 if (!po->name)
238 po= find_option(options, "default");
239 if (!po->name) {
240 unknown_opt:
241 fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
242 exit_program(1);
243 }
244 arg = NULL;
245 if (po->flags & HAS_ARG) {
246 arg = argv[optindex++];
247 if (!arg) {
248 fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);
249 exit_program(1);
250 }
251 }
252 /* new-style options contain an offset into optctx, old-style address of
253 * a global var*/
254 dst = po->flags & OPT_OFFSET ? (uint8_t*)optctx + po->u.off : po->u.dst_ptr;
255 if (po->flags & OPT_STRING) {
256 char *str;
257 str = av_strdup(arg);
258 *(char**)dst = str;
259 } else if (po->flags & OPT_BOOL) {
260 *(int*)dst = bool_val;
261 } else if (po->flags & OPT_INT) {
262 *(int*)dst = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
263 } else if (po->flags & OPT_INT64) {
264 *(int64_t*)dst = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
265 } else if (po->flags & OPT_FLOAT) {
266 *(float*)dst = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
267 } else if (po->u.func_arg) {
268 int ret = po->flags & OPT_FUNC2 ? po->u.func2_arg(optctx, opt, arg) :
269 po->u.func_arg(opt, arg);
270 if (ret < 0) {
271 fprintf(stderr, "%s: failed to set value '%s' for option '%s'\n", argv[0], arg, opt);
272 exit_program(1);
273 }
274 }
275 if(po->flags & OPT_EXIT)
276 exit_program(0);
277 } else {
278 if (parse_arg_function)
279 parse_arg_function(optctx, opt);
280 }
281 }
282 }
283
284 #define FLAGS (o->type == FF_OPT_TYPE_FLAGS) ? AV_DICT_APPEND : 0
285 int opt_default(const char *opt, const char *arg)
286 {
287 const AVOption *o;
288 char opt_stripped[128];
289 const char *p;
290 const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class(), *sc = sws_get_class();
291
292 if (!(p = strchr(opt, ':')))
293 p = opt + strlen(opt);
294 av_strlcpy(opt_stripped, opt, FFMIN(sizeof(opt_stripped), p - opt + 1));
295
296 if ((o = av_opt_find(&cc, opt_stripped, NULL, 0, AV_OPT_SEARCH_CHILDREN|AV_OPT_SEARCH_FAKE_OBJ)) ||
297 ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') &&
298 (o = av_opt_find(&cc, opt+1, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ))))
299 av_dict_set(&codec_opts, opt, arg, FLAGS);
300 else if ((o = av_opt_find(&fc, opt, NULL, 0, AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)))
301 av_dict_set(&format_opts, opt, arg, FLAGS);
302 else if ((o = av_opt_find(&sc, opt, NULL, 0, AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
303 // XXX we only support sws_flags, not arbitrary sws options
304 int ret = av_set_string3(sws_opts, opt, arg, 1, NULL);
305 if (ret < 0) {
306 av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
307 return ret;
308 }
309 }
310
311 if (o)
312 return 0;
313 fprintf(stderr, "Unrecognized option '%s'\n", opt);
314 return AVERROR_OPTION_NOT_FOUND;
315 }
316
317 int opt_loglevel(const char *opt, const char *arg)
318 {
319 const struct { const char *name; int level; } log_levels[] = {
320 { "quiet" , AV_LOG_QUIET },
321 { "panic" , AV_LOG_PANIC },
322 { "fatal" , AV_LOG_FATAL },
323 { "error" , AV_LOG_ERROR },
324 { "warning", AV_LOG_WARNING },
325 { "info" , AV_LOG_INFO },
326 { "verbose", AV_LOG_VERBOSE },
327 { "debug" , AV_LOG_DEBUG },
328 };
329 char *tail;
330 int level;
331 int i;
332
333 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
334 if (!strcmp(log_levels[i].name, arg)) {
335 av_log_set_level(log_levels[i].level);
336 return 0;
337 }
338 }
339
340 level = strtol(arg, &tail, 10);
341 if (*tail) {
342 fprintf(stderr, "Invalid loglevel \"%s\". "
343 "Possible levels are numbers or:\n", arg);
344 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
345 fprintf(stderr, "\"%s\"\n", log_levels[i].name);
346 exit_program(1);
347 }
348 av_log_set_level(level);
349 return 0;
350 }
351
352 int opt_timelimit(const char *opt, const char *arg)
353 {
354 #if HAVE_SETRLIMIT
355 int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
356 struct rlimit rl = { lim, lim + 1 };
357 if (setrlimit(RLIMIT_CPU, &rl))
358 perror("setrlimit");
359 #else
360 fprintf(stderr, "Warning: -%s not implemented on this OS\n", opt);
361 #endif
362 return 0;
363 }
364
365 void print_error(const char *filename, int err)
366 {
367 char errbuf[128];
368 const char *errbuf_ptr = errbuf;
369
370 if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
371 errbuf_ptr = strerror(AVUNERROR(err));
372 fprintf(stderr, "%s: %s\n", filename, errbuf_ptr);
373 }
374
375 static int warned_cfg = 0;
376
377 #define INDENT 1
378 #define SHOW_VERSION 2
379 #define SHOW_CONFIG 4
380
381 #define PRINT_LIB_INFO(outstream,libname,LIBNAME,flags) \
382 if (CONFIG_##LIBNAME) { \
383 const char *indent = flags & INDENT? " " : ""; \
384 if (flags & SHOW_VERSION) { \
385 unsigned int version = libname##_version(); \
386 fprintf(outstream, "%slib%-9s %2d.%3d.%2d / %2d.%3d.%2d\n", \
387 indent, #libname, \
388 LIB##LIBNAME##_VERSION_MAJOR, \
389 LIB##LIBNAME##_VERSION_MINOR, \
390 LIB##LIBNAME##_VERSION_MICRO, \
391 version >> 16, version >> 8 & 0xff, version & 0xff); \
392 } \
393 if (flags & SHOW_CONFIG) { \
394 const char *cfg = libname##_configuration(); \
395 if (strcmp(LIBAV_CONFIGURATION, cfg)) { \
396 if (!warned_cfg) { \
397 fprintf(outstream, \
398 "%sWARNING: library configuration mismatch\n", \
399 indent); \
400 warned_cfg = 1; \
401 } \
402 fprintf(stderr, "%s%-11s configuration: %s\n", \
403 indent, #libname, cfg); \
404 } \
405 } \
406 } \
407
408 static void print_all_libs_info(FILE* outstream, int flags)
409 {
410 PRINT_LIB_INFO(outstream, avutil, AVUTIL, flags);
411 PRINT_LIB_INFO(outstream, avcodec, AVCODEC, flags);
412 PRINT_LIB_INFO(outstream, avformat, AVFORMAT, flags);
413 PRINT_LIB_INFO(outstream, avdevice, AVDEVICE, flags);
414 PRINT_LIB_INFO(outstream, avfilter, AVFILTER, flags);
415 PRINT_LIB_INFO(outstream, swscale, SWSCALE, flags);
416 PRINT_LIB_INFO(outstream, postproc, POSTPROC, flags);
417 }
418
419 void show_banner(void)
420 {
421 fprintf(stderr, "%s version " LIBAV_VERSION ", Copyright (c) %d-%d the Libav developers\n",
422 program_name, program_birth_year, this_year);
423 fprintf(stderr, " built on %s %s with %s %s\n",
424 __DATE__, __TIME__, CC_TYPE, CC_VERSION);
425 fprintf(stderr, " configuration: " LIBAV_CONFIGURATION "\n");
426 print_all_libs_info(stderr, INDENT|SHOW_CONFIG);
427 print_all_libs_info(stderr, INDENT|SHOW_VERSION);
428 }
429
430 void show_version(void) {
431 printf("%s " LIBAV_VERSION "\n", program_name);
432 print_all_libs_info(stdout, SHOW_VERSION);
433 }
434
435 void show_license(void)
436 {
437 printf(
438 #if CONFIG_NONFREE
439 "This version of %s has nonfree parts compiled in.\n"
440 "Therefore it is not legally redistributable.\n",
441 program_name
442 #elif CONFIG_GPLV3
443 "%s is free software; you can redistribute it and/or modify\n"
444 "it under the terms of the GNU General Public License as published by\n"
445 "the Free Software Foundation; either version 3 of the License, or\n"
446 "(at your option) any later version.\n"
447 "\n"
448 "%s is distributed in the hope that it will be useful,\n"
449 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
450 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
451 "GNU General Public License for more details.\n"
452 "\n"
453 "You should have received a copy of the GNU General Public License\n"
454 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
455 program_name, program_name, program_name
456 #elif CONFIG_GPL
457 "%s is free software; you can redistribute it and/or modify\n"
458 "it under the terms of the GNU General Public License as published by\n"
459 "the Free Software Foundation; either version 2 of the License, or\n"
460 "(at your option) any later version.\n"
461 "\n"
462 "%s is distributed in the hope that it will be useful,\n"
463 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
464 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
465 "GNU General Public License for more details.\n"
466 "\n"
467 "You should have received a copy of the GNU General Public License\n"
468 "along with %s; if not, write to the Free Software\n"
469 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
470 program_name, program_name, program_name
471 #elif CONFIG_LGPLV3
472 "%s is free software; you can redistribute it and/or modify\n"
473 "it under the terms of the GNU Lesser General Public License as published by\n"
474 "the Free Software Foundation; either version 3 of the License, or\n"
475 "(at your option) any later version.\n"
476 "\n"
477 "%s is distributed in the hope that it will be useful,\n"
478 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
479 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
480 "GNU Lesser General Public License for more details.\n"
481 "\n"
482 "You should have received a copy of the GNU Lesser General Public License\n"
483 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
484 program_name, program_name, program_name
485 #else
486 "%s is free software; you can redistribute it and/or\n"
487 "modify it under the terms of the GNU Lesser General Public\n"
488 "License as published by the Free Software Foundation; either\n"
489 "version 2.1 of the License, or (at your option) any later version.\n"
490 "\n"
491 "%s is distributed in the hope that it will be useful,\n"
492 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
493 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
494 "Lesser General Public License for more details.\n"
495 "\n"
496 "You should have received a copy of the GNU Lesser General Public\n"
497 "License along with %s; if not, write to the Free Software\n"
498 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
499 program_name, program_name, program_name
500 #endif
501 );
502 }
503
504 void show_formats(void)
505 {
506 AVInputFormat *ifmt=NULL;
507 AVOutputFormat *ofmt=NULL;
508 const char *last_name;
509
510 printf(
511 "File formats:\n"
512 " D. = Demuxing supported\n"
513 " .E = Muxing supported\n"
514 " --\n");
515 last_name= "000";
516 for(;;){
517 int decode=0;
518 int encode=0;
519 const char *name=NULL;
520 const char *long_name=NULL;
521
522 while((ofmt= av_oformat_next(ofmt))) {
523 if((name == NULL || strcmp(ofmt->name, name)<0) &&
524 strcmp(ofmt->name, last_name)>0){
525 name= ofmt->name;
526 long_name= ofmt->long_name;
527 encode=1;
528 }
529 }
530 while((ifmt= av_iformat_next(ifmt))) {
531 if((name == NULL || strcmp(ifmt->name, name)<0) &&
532 strcmp(ifmt->name, last_name)>0){
533 name= ifmt->name;
534 long_name= ifmt->long_name;
535 encode=0;
536 }
537 if(name && strcmp(ifmt->name, name)==0)
538 decode=1;
539 }
540 if(name==NULL)
541 break;
542 last_name= name;
543
544 printf(
545 " %s%s %-15s %s\n",
546 decode ? "D":" ",
547 encode ? "E":" ",
548 name,
549 long_name ? long_name:" ");
550 }
551 }
552
553 void show_codecs(void)
554 {
555 AVCodec *p=NULL, *p2;
556 const char *last_name;
557 printf(
558 "Codecs:\n"
559 " D..... = Decoding supported\n"
560 " .E.... = Encoding supported\n"
561 " ..V... = Video codec\n"
562 " ..A... = Audio codec\n"
563 " ..S... = Subtitle codec\n"
564 " ...S.. = Supports draw_horiz_band\n"
565 " ....D. = Supports direct rendering method 1\n"
566 " .....T = Supports weird frame truncation\n"
567 " ------\n");
568 last_name= "000";
569 for(;;){
570 int decode=0;
571 int encode=0;
572 int cap=0;
573 const char *type_str;
574
575 p2=NULL;
576 while((p= av_codec_next(p))) {
577 if((p2==NULL || strcmp(p->name, p2->name)<0) &&
578 strcmp(p->name, last_name)>0){
579 p2= p;
580 decode= encode= cap=0;
581 }
582 if(p2 && strcmp(p->name, p2->name)==0){
583 if(p->decode) decode=1;
584 if(p->encode) encode=1;
585 cap |= p->capabilities;
586 }
587 }
588 if(p2==NULL)
589 break;
590 last_name= p2->name;
591
592 switch(p2->type) {
593 case AVMEDIA_TYPE_VIDEO:
594 type_str = "V";
595 break;
596 case AVMEDIA_TYPE_AUDIO:
597 type_str = "A";
598 break;
599 case AVMEDIA_TYPE_SUBTITLE:
600 type_str = "S";
601 break;
602 default:
603 type_str = "?";
604 break;
605 }
606 printf(
607 " %s%s%s%s%s%s %-15s %s",
608 decode ? "D": (/*p2->decoder ? "d":*/" "),
609 encode ? "E":" ",
610 type_str,
611 cap & CODEC_CAP_DRAW_HORIZ_BAND ? "S":" ",
612 cap & CODEC_CAP_DR1 ? "D":" ",
613 cap & CODEC_CAP_TRUNCATED ? "T":" ",
614 p2->name,
615 p2->long_name ? p2->long_name : "");
616 /* if(p2->decoder && decode==0)
617 printf(" use %s for decoding", p2->decoder->name);*/
618 printf("\n");
619 }
620 printf("\n");
621 printf(
622 "Note, the names of encoders and decoders do not always match, so there are\n"
623 "several cases where the above table shows encoder only or decoder only entries\n"
624 "even though both encoding and decoding are supported. For example, the h263\n"
625 "decoder corresponds to the h263 and h263p encoders, for file formats it is even\n"
626 "worse.\n");
627 }
628
629 void show_bsfs(void)
630 {
631 AVBitStreamFilter *bsf=NULL;
632
633 printf("Bitstream filters:\n");
634 while((bsf = av_bitstream_filter_next(bsf)))
635 printf("%s\n", bsf->name);
636 printf("\n");
637 }
638
639 void show_protocols(void)
640 {
641 void *opaque = NULL;
642 const char *name;
643
644 printf("Supported file protocols:\n"
645 "Input:\n");
646 while ((name = avio_enum_protocols(&opaque, 0)))
647 printf("%s\n", name);
648 printf("Output:\n");
649 while ((name = avio_enum_protocols(&opaque, 1)))
650 printf("%s\n", name);
651 }
652
653 void show_filters(void)
654 {
655 AVFilter av_unused(**filter) = NULL;
656
657 printf("Filters:\n");
658 #if CONFIG_AVFILTER
659 while ((filter = av_filter_next(filter)) && *filter)
660 printf("%-16s %s\n", (*filter)->name, (*filter)->description);
661 #endif
662 }
663
664 void show_pix_fmts(void)
665 {
666 enum PixelFormat pix_fmt;
667
668 printf(
669 "Pixel formats:\n"
670 "I.... = Supported Input format for conversion\n"
671 ".O... = Supported Output format for conversion\n"
672 "..H.. = Hardware accelerated format\n"
673 "...P. = Paletted format\n"
674 "....B = Bitstream format\n"
675 "FLAGS NAME NB_COMPONENTS BITS_PER_PIXEL\n"
676 "-----\n");
677
678 #if !CONFIG_SWSCALE
679 # define sws_isSupportedInput(x) 0
680 # define sws_isSupportedOutput(x) 0
681 #endif
682
683 for (pix_fmt = 0; pix_fmt < PIX_FMT_NB; pix_fmt++) {
684 const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[pix_fmt];
685 printf("%c%c%c%c%c %-16s %d %2d\n",
686 sws_isSupportedInput (pix_fmt) ? 'I' : '.',
687 sws_isSupportedOutput(pix_fmt) ? 'O' : '.',
688 pix_desc->flags & PIX_FMT_HWACCEL ? 'H' : '.',
689 pix_desc->flags & PIX_FMT_PAL ? 'P' : '.',
690 pix_desc->flags & PIX_FMT_BITSTREAM ? 'B' : '.',
691 pix_desc->name,
692 pix_desc->nb_components,
693 av_get_bits_per_pixel(pix_desc));
694 }
695 }
696
697 int read_yesno(void)
698 {
699 int c = getchar();
700 int yesno = (toupper(c) == 'Y');
701
702 while (c != '\n' && c != EOF)
703 c = getchar();
704
705 return yesno;
706 }
707
708 int read_file(const char *filename, char **bufptr, size_t *size)
709 {
710 FILE *f = fopen(filename, "rb");
711
712 if (!f) {
713 fprintf(stderr, "Cannot read file '%s': %s\n", filename, strerror(errno));
714 return AVERROR(errno);
715 }
716 fseek(f, 0, SEEK_END);
717 *size = ftell(f);
718 fseek(f, 0, SEEK_SET);
719 *bufptr = av_malloc(*size + 1);
720 if (!*bufptr) {
721 fprintf(stderr, "Could not allocate file buffer\n");
722 fclose(f);
723 return AVERROR(ENOMEM);
724 }
725 fread(*bufptr, 1, *size, f);
726 (*bufptr)[*size++] = '\0';
727
728 fclose(f);
729 return 0;
730 }
731
732 void init_pts_correction(PtsCorrectionContext *ctx)
733 {
734 ctx->num_faulty_pts = ctx->num_faulty_dts = 0;
735 ctx->last_pts = ctx->last_dts = INT64_MIN;
736 }
737
738 int64_t guess_correct_pts(PtsCorrectionContext *ctx, int64_t reordered_pts, int64_t dts)
739 {
740 int64_t pts = AV_NOPTS_VALUE;
741
742 if (dts != AV_NOPTS_VALUE) {
743 ctx->num_faulty_dts += dts <= ctx->last_dts;
744 ctx->last_dts = dts;
745 }
746 if (reordered_pts != AV_NOPTS_VALUE) {
747 ctx->num_faulty_pts += reordered_pts <= ctx->last_pts;
748 ctx->last_pts = reordered_pts;
749 }
750 if ((ctx->num_faulty_pts<=ctx->num_faulty_dts || dts == AV_NOPTS_VALUE)
751 && reordered_pts != AV_NOPTS_VALUE)
752 pts = reordered_pts;
753 else
754 pts = dts;
755
756 return pts;
757 }
758
759 FILE *get_preset_file(char *filename, size_t filename_size,
760 const char *preset_name, int is_path, const char *codec_name)
761 {
762 FILE *f = NULL;
763 int i;
764 const char *base[3]= { getenv("AVCONV_DATADIR"),
765 getenv("HOME"),
766 AVCONV_DATADIR,
767 };
768
769 if (is_path) {
770 av_strlcpy(filename, preset_name, filename_size);
771 f = fopen(filename, "r");
772 } else {
773 for (i = 0; i < 3 && !f; i++) {
774 if (!base[i])
775 continue;
776 snprintf(filename, filename_size, "%s%s/%s.ffpreset", base[i], i != 1 ? "" : "/.avconv", preset_name);
777 f = fopen(filename, "r");
778 if (!f && codec_name) {
779 snprintf(filename, filename_size,
780 "%s%s/%s-%s.ffpreset", base[i], i != 1 ? "" : "/.avconv", codec_name, preset_name);
781 f = fopen(filename, "r");
782 }
783 }
784 }
785
786 return f;
787 }
788
789 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
790 {
791 if (*spec <= '9' && *spec >= '0') /* opt:index */
792 return strtol(spec, NULL, 0) == st->index;
793 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd') { /* opt:[vasd] */
794 enum AVMediaType type;
795
796 switch (*spec++) {
797 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
798 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
799 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
800 case 'd': type = AVMEDIA_TYPE_DATA; break;
801 }
802 if (type != st->codec->codec_type)
803 return 0;
804 if (*spec++ == ':') { /* possibly followed by :index */
805 int i, index = strtol(spec, NULL, 0);
806 for (i = 0; i < s->nb_streams; i++)
807 if (s->streams[i]->codec->codec_type == type && index-- == 0)
808 return i == st->index;
809 return 0;
810 }
811 return 1;
812 } else if (!*spec) /* empty specifier, matches everything */
813 return 1;
814
815 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
816 return AVERROR(EINVAL);
817 }
818
819 AVDictionary *filter_codec_opts(AVDictionary *opts, enum CodecID codec_id, AVFormatContext *s, AVStream *st)
820 {
821 AVDictionary *ret = NULL;
822 AVDictionaryEntry *t = NULL;
823 AVCodec *codec = s->oformat ? avcodec_find_encoder(codec_id) : avcodec_find_decoder(codec_id);
824 int flags = s->oformat ? AV_OPT_FLAG_ENCODING_PARAM : AV_OPT_FLAG_DECODING_PARAM;
825 char prefix = 0;
826 const AVClass *cc = avcodec_get_class();
827
828 if (!codec)
829 return NULL;
830
831 switch (codec->type) {
832 case AVMEDIA_TYPE_VIDEO: prefix = 'v'; flags |= AV_OPT_FLAG_VIDEO_PARAM; break;
833 case AVMEDIA_TYPE_AUDIO: prefix = 'a'; flags |= AV_OPT_FLAG_AUDIO_PARAM; break;
834 case AVMEDIA_TYPE_SUBTITLE: prefix = 's'; flags |= AV_OPT_FLAG_SUBTITLE_PARAM; break;
835 }
836
837 while (t = av_dict_get(opts, "", t, AV_DICT_IGNORE_SUFFIX)) {
838 char *p = strchr(t->key, ':');
839
840 /* check stream specification in opt name */
841 if (p)
842 switch (check_stream_specifier(s, st, p + 1)) {
843 case 1: *p = 0; break;
844 case 0: continue;
845 default: return NULL;
846 }
847
848 if (av_opt_find(&cc, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ) ||
849 (codec && codec->priv_class && av_opt_find(&codec->priv_class, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ)))
850 av_dict_set(&ret, t->key, t->value, 0);
851 else if (t->key[0] == prefix && av_opt_find(&cc, t->key+1, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ))
852 av_dict_set(&ret, t->key+1, t->value, 0);
853
854 if (p)
855 *p = ':';
856 }
857 return ret;
858 }
859
860 AVDictionary **setup_find_stream_info_opts(AVFormatContext *s, AVDictionary *codec_opts)
861 {
862 int i;
863 AVDictionary **opts;
864
865 if (!s->nb_streams)
866 return NULL;
867 opts = av_mallocz(s->nb_streams * sizeof(*opts));
868 if (!opts) {
869 av_log(NULL, AV_LOG_ERROR, "Could not alloc memory for stream options.\n");
870 return NULL;
871 }
872 for (i = 0; i < s->nb_streams; i++)
873 opts[i] = filter_codec_opts(codec_opts, s->streams[i]->codec->codec_id, s, s->streams[i]);
874 return opts;
875 }
876
877 #if CONFIG_AVFILTER
878
879 static int ffsink_init(AVFilterContext *ctx, const char *args, void *opaque)
880 {
881 FFSinkContext *priv = ctx->priv;
882
883 if (!opaque)
884 return AVERROR(EINVAL);
885 *priv = *(FFSinkContext *)opaque;
886
887 return 0;
888 }
889
890 static void null_end_frame(AVFilterLink *inlink) { }
891
892 static int ffsink_query_formats(AVFilterContext *ctx)
893 {
894 FFSinkContext *priv = ctx->priv;
895 enum PixelFormat pix_fmts[] = { priv->pix_fmt, PIX_FMT_NONE };
896
897 avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
898 return 0;
899 }
900
901 AVFilter ffsink = {
902 .name = "ffsink",
903 .priv_size = sizeof(FFSinkContext),
904 .init = ffsink_init,
905
906 .query_formats = ffsink_query_formats,
907
908 .inputs = (AVFilterPad[]) {{ .name = "default",
909 .type = AVMEDIA_TYPE_VIDEO,
910 .end_frame = null_end_frame,
911 .min_perms = AV_PERM_READ, },
912 { .name = NULL }},
913 .outputs = (AVFilterPad[]) {{ .name = NULL }},
914 };
915
916 int get_filtered_video_frame(AVFilterContext *ctx, AVFrame *frame,
917 AVFilterBufferRef **picref_ptr, AVRational *tb)
918 {
919 int ret;
920 AVFilterBufferRef *picref;
921
922 if ((ret = avfilter_request_frame(ctx->inputs[0])) < 0)
923 return ret;
924 if (!(picref = ctx->inputs[0]->cur_buf))
925 return AVERROR(ENOENT);
926 *picref_ptr = picref;
927 ctx->inputs[0]->cur_buf = NULL;
928 *tb = ctx->inputs[0]->time_base;
929
930 memcpy(frame->data, picref->data, sizeof(frame->data));
931 memcpy(frame->linesize, picref->linesize, sizeof(frame->linesize));
932 frame->interlaced_frame = picref->video->interlaced;
933 frame->top_field_first = picref->video->top_field_first;
934 frame->key_frame = picref->video->key_frame;
935 frame->pict_type = picref->video->pict_type;
936
937 return 1;
938 }
939
940 void *grow_array(void *array, int elem_size, int *size, int new_size)
941 {
942 if (new_size >= INT_MAX / elem_size) {
943 av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
944 exit_program(1);
945 }
946 if (*size < new_size) {
947 uint8_t *tmp = av_realloc(array, new_size*elem_size);
948 if (!tmp) {
949 av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
950 exit_program(1);
951 }
952 memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
953 *size = new_size;
954 return tmp;
955 }
956 return array;
957 }
958
959 #endif /* CONFIG_AVFILTER */