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ffprobe.c
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1 /*
2  * Copyright (c) 2007-2010 Stefano Sabatini
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 /**
22  * @file
23  * simple media prober based on the FFmpeg libraries
24  */
25 
26 #include "config.h"
27 #include "libavutil/ffversion.h"
28 
29 #include <string.h>
30 
31 #include "libavformat/avformat.h"
32 #include "libavcodec/avcodec.h"
33 #include "libavutil/avassert.h"
34 #include "libavutil/avstring.h"
35 #include "libavutil/bprint.h"
36 #include "libavutil/hash.h"
37 #include "libavutil/opt.h"
38 #include "libavutil/pixdesc.h"
39 #include "libavutil/dict.h"
40 #include "libavutil/libm.h"
41 #include "libavutil/parseutils.h"
42 #include "libavutil/timecode.h"
43 #include "libavutil/timestamp.h"
44 #include "libavdevice/avdevice.h"
45 #include "libswscale/swscale.h"
48 #include "cmdutils.h"
49 
50 const char program_name[] = "ffprobe";
51 const int program_birth_year = 2007;
52 
53 static int do_bitexact = 0;
54 static int do_count_frames = 0;
55 static int do_count_packets = 0;
56 static int do_read_frames = 0;
57 static int do_read_packets = 0;
58 static int do_show_chapters = 0;
59 static int do_show_error = 0;
60 static int do_show_format = 0;
61 static int do_show_frames = 0;
62 static int do_show_packets = 0;
63 static int do_show_programs = 0;
64 static int do_show_streams = 0;
66 static int do_show_data = 0;
67 static int do_show_program_version = 0;
68 static int do_show_library_versions = 0;
69 
70 static int do_show_chapter_tags = 0;
71 static int do_show_format_tags = 0;
72 static int do_show_frame_tags = 0;
73 static int do_show_program_tags = 0;
74 static int do_show_stream_tags = 0;
75 
76 static int show_value_unit = 0;
77 static int use_value_prefix = 0;
80 static int show_private_data = 1;
81 
82 static char *print_format;
83 static char *stream_specifier;
84 static char *show_data_hash;
85 
86 typedef struct {
87  int id; ///< identifier
88  int64_t start, end; ///< start, end in second/AV_TIME_BASE units
89  int has_start, has_end;
90  int start_is_offset, end_is_offset;
92 } ReadInterval;
93 
95 static int read_intervals_nb = 0;
96 
97 /* section structure definition */
98 
99 #define SECTION_MAX_NB_CHILDREN 10
100 
101 struct section {
102  int id; ///< unique id identifying a section
103  const char *name;
104 
105 #define SECTION_FLAG_IS_WRAPPER 1 ///< the section only contains other sections, but has no data at its own level
106 #define SECTION_FLAG_IS_ARRAY 2 ///< the section contains an array of elements of the same type
107 #define SECTION_FLAG_HAS_VARIABLE_FIELDS 4 ///< the section may contain a variable number of fields with variable keys.
108  /// For these sections the element_name field is mandatory.
109  int flags;
110  int children_ids[SECTION_MAX_NB_CHILDREN+1]; ///< list of children section IDS, terminated by -1
111  const char *element_name; ///< name of the contained element, if provided
112  const char *unique_name; ///< unique section name, in case the name is ambiguous
115 };
116 
117 typedef enum {
149 } SectionID;
150 
151 static struct section sections[] = {
153  [SECTION_ID_CHAPTER] = { SECTION_ID_CHAPTER, "chapter", 0, { SECTION_ID_CHAPTER_TAGS, -1 } },
154  [SECTION_ID_CHAPTER_TAGS] = { SECTION_ID_CHAPTER_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "chapter_tags" },
155  [SECTION_ID_ERROR] = { SECTION_ID_ERROR, "error", 0, { -1 } },
156  [SECTION_ID_FORMAT] = { SECTION_ID_FORMAT, "format", 0, { SECTION_ID_FORMAT_TAGS, -1 } },
157  [SECTION_ID_FORMAT_TAGS] = { SECTION_ID_FORMAT_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "format_tags" },
160  [SECTION_ID_FRAME_TAGS] = { SECTION_ID_FRAME_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "frame_tags" },
162  [SECTION_ID_FRAME_SIDE_DATA] = { SECTION_ID_FRAME_SIDE_DATA, "side_data", 0, { -1 } },
164  [SECTION_ID_LIBRARY_VERSION] = { SECTION_ID_LIBRARY_VERSION, "library_version", 0, { -1 } },
167  [SECTION_ID_PACKET] = { SECTION_ID_PACKET, "packet", 0, { -1 } },
168  [SECTION_ID_PROGRAM_STREAM_DISPOSITION] = { SECTION_ID_PROGRAM_STREAM_DISPOSITION, "disposition", 0, { -1 }, .unique_name = "program_stream_disposition" },
169  [SECTION_ID_PROGRAM_STREAM_TAGS] = { SECTION_ID_PROGRAM_STREAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "program_stream_tags" },
171  [SECTION_ID_PROGRAM_STREAMS] = { SECTION_ID_PROGRAM_STREAMS, "streams", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PROGRAM_STREAM, -1 }, .unique_name = "program_streams" },
173  [SECTION_ID_PROGRAM_TAGS] = { SECTION_ID_PROGRAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "program_tags" },
174  [SECTION_ID_PROGRAM_VERSION] = { SECTION_ID_PROGRAM_VERSION, "program_version", 0, { -1 } },
181  [SECTION_ID_STREAM_DISPOSITION] = { SECTION_ID_STREAM_DISPOSITION, "disposition", 0, { -1 }, .unique_name = "stream_disposition" },
182  [SECTION_ID_STREAM_TAGS] = { SECTION_ID_STREAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "stream_tags" },
183  [SECTION_ID_SUBTITLE] = { SECTION_ID_SUBTITLE, "subtitle", 0, { -1 } },
184 };
185 
186 static const OptionDef *options;
187 
188 /* FFprobe context */
189 static const char *input_filename;
190 static AVInputFormat *iformat = NULL;
191 
192 static struct AVHashContext *hash;
193 
194 static const char *const binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
195 static const char *const decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P" };
196 
197 static const char unit_second_str[] = "s" ;
198 static const char unit_hertz_str[] = "Hz" ;
199 static const char unit_byte_str[] = "byte" ;
200 static const char unit_bit_per_second_str[] = "bit/s";
201 
202 static int nb_streams;
203 static uint64_t *nb_streams_packets;
204 static uint64_t *nb_streams_frames;
205 static int *selected_streams;
206 
207 static void ffprobe_cleanup(int ret)
208 {
209  int i;
210  for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)
211  av_dict_free(&(sections[i].entries_to_show));
212 }
213 
214 struct unit_value {
215  union { double d; long long int i; } val;
216  const char *unit;
217 };
218 
219 static char *value_string(char *buf, int buf_size, struct unit_value uv)
220 {
221  double vald;
222  long long int vali;
223  int show_float = 0;
224 
225  if (uv.unit == unit_second_str) {
226  vald = uv.val.d;
227  show_float = 1;
228  } else {
229  vald = vali = uv.val.i;
230  }
231 
233  double secs;
234  int hours, mins;
235  secs = vald;
236  mins = (int)secs / 60;
237  secs = secs - mins * 60;
238  hours = mins / 60;
239  mins %= 60;
240  snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
241  } else {
242  const char *prefix_string = "";
243 
244  if (use_value_prefix && vald > 1) {
245  long long int index;
246 
248  index = (long long int) (log2(vald)) / 10;
249  index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) - 1);
250  vald /= exp2(index * 10);
251  prefix_string = binary_unit_prefixes[index];
252  } else {
253  index = (long long int) (log10(vald)) / 3;
254  index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) - 1);
255  vald /= pow(10, index * 3);
256  prefix_string = decimal_unit_prefixes[index];
257  }
258  vali = vald;
259  }
260 
261  if (show_float || (use_value_prefix && vald != (long long int)vald))
262  snprintf(buf, buf_size, "%f", vald);
263  else
264  snprintf(buf, buf_size, "%lld", vali);
265  av_strlcatf(buf, buf_size, "%s%s%s", *prefix_string || show_value_unit ? " " : "",
266  prefix_string, show_value_unit ? uv.unit : "");
267  }
268 
269  return buf;
270 }
271 
272 /* WRITERS API */
273 
274 typedef struct WriterContext WriterContext;
275 
276 #define WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS 1
277 #define WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER 2
278 
279 typedef enum {
285 
286 typedef struct Writer {
287  const AVClass *priv_class; ///< private class of the writer, if any
288  int priv_size; ///< private size for the writer context
289  const char *name;
290 
291  int (*init) (WriterContext *wctx);
293 
296  void (*print_integer) (WriterContext *wctx, const char *, long long int);
297  void (*print_rational) (WriterContext *wctx, AVRational *q, char *sep);
298  void (*print_string) (WriterContext *wctx, const char *, const char *);
299  int flags; ///< a combination or WRITER_FLAG_*
300 } Writer;
301 
302 #define SECTION_MAX_NB_LEVELS 10
303 
305  const AVClass *class; ///< class of the writer
306  const Writer *writer; ///< the Writer of which this is an instance
307  char *name; ///< name of this writer instance
308  void *priv; ///< private data for use by the filter
309 
310  const struct section *sections; ///< array containing all sections
311  int nb_sections; ///< number of sections
312 
313  int level; ///< current level, starting from 0
314 
315  /** number of the item printed in the given section, starting from 0 */
317 
318  /** section per each level */
320  AVBPrint section_pbuf[SECTION_MAX_NB_LEVELS]; ///< generic print buffer dedicated to each section,
321  /// used by various writers
322 
323  unsigned int nb_section_packet; ///< number of the packet section in case we are in "packets_and_frames" section
324  unsigned int nb_section_frame; ///< number of the frame section in case we are in "packets_and_frames" section
325  unsigned int nb_section_packet_frame; ///< nb_section_packet or nb_section_frame according if is_packets_and_frames
326 
330 };
331 
332 static const char *writer_get_name(void *p)
333 {
334  WriterContext *wctx = p;
335  return wctx->writer->name;
336 }
337 
338 #define OFFSET(x) offsetof(WriterContext, x)
339 
340 static const AVOption writer_options[] = {
341  { "string_validation", "set string validation mode",
342  OFFSET(string_validation), AV_OPT_TYPE_INT, {.i64=WRITER_STRING_VALIDATION_REPLACE}, 0, WRITER_STRING_VALIDATION_NB-1, .unit = "sv" },
343  { "sv", "set string validation mode",
344  OFFSET(string_validation), AV_OPT_TYPE_INT, {.i64=WRITER_STRING_VALIDATION_REPLACE}, 0, WRITER_STRING_VALIDATION_NB-1, .unit = "sv" },
345  { "ignore", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_IGNORE}, .unit = "sv" },
346  { "replace", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_REPLACE}, .unit = "sv" },
347  { "fail", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_FAIL}, .unit = "sv" },
348  { "string_validation_replacement", "set string validation replacement string", OFFSET(string_validation_replacement), AV_OPT_TYPE_STRING, {.str=""}},
349  { "svr", "set string validation replacement string", OFFSET(string_validation_replacement), AV_OPT_TYPE_STRING, {.str="\xEF\xBF\xBD"}},
350  { NULL }
351 };
352 
353 static void *writer_child_next(void *obj, void *prev)
354 {
355  WriterContext *ctx = obj;
356  if (!prev && ctx->writer && ctx->writer->priv_class && ctx->priv)
357  return ctx->priv;
358  return NULL;
359 }
360 
361 static const AVClass writer_class = {
362  .class_name = "Writer",
363  .item_name = writer_get_name,
364  .option = writer_options,
365  .version = LIBAVUTIL_VERSION_INT,
366  .child_next = writer_child_next,
367 };
368 
369 static void writer_close(WriterContext **wctx)
370 {
371  int i;
372 
373  if (!*wctx)
374  return;
375 
376  if ((*wctx)->writer->uninit)
377  (*wctx)->writer->uninit(*wctx);
378  for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
379  av_bprint_finalize(&(*wctx)->section_pbuf[i], NULL);
380  if ((*wctx)->writer->priv_class)
381  av_opt_free((*wctx)->priv);
382  av_freep(&((*wctx)->priv));
383  av_opt_free(*wctx);
384  av_freep(wctx);
385 }
386 
387 static void bprint_bytes(AVBPrint *bp, const uint8_t *ubuf, size_t ubuf_size)
388 {
389  int i;
390  av_bprintf(bp, "0X");
391  for (i = 0; i < ubuf_size; i++)
392  av_bprintf(bp, "%02X", ubuf[i]);
393 }
394 
395 
396 static int writer_open(WriterContext **wctx, const Writer *writer, const char *args,
397  const struct section *sections, int nb_sections)
398 {
399  int i, ret = 0;
400 
401  if (!(*wctx = av_mallocz(sizeof(WriterContext)))) {
402  ret = AVERROR(ENOMEM);
403  goto fail;
404  }
405 
406  if (!((*wctx)->priv = av_mallocz(writer->priv_size))) {
407  ret = AVERROR(ENOMEM);
408  goto fail;
409  }
410 
411  (*wctx)->class = &writer_class;
412  (*wctx)->writer = writer;
413  (*wctx)->level = -1;
414  (*wctx)->sections = sections;
415  (*wctx)->nb_sections = nb_sections;
416 
417  av_opt_set_defaults(*wctx);
418 
419  if (writer->priv_class) {
420  void *priv_ctx = (*wctx)->priv;
421  *((const AVClass **)priv_ctx) = writer->priv_class;
422  av_opt_set_defaults(priv_ctx);
423  }
424 
425  /* convert options to dictionary */
426  if (args) {
427  AVDictionary *opts = NULL;
428  AVDictionaryEntry *opt = NULL;
429 
430  if ((ret = av_dict_parse_string(&opts, args, "=", ":", 0)) < 0) {
431  av_log(*wctx, AV_LOG_ERROR, "Failed to parse option string '%s' provided to writer context\n", args);
432  av_dict_free(&opts);
433  goto fail;
434  }
435 
436  while ((opt = av_dict_get(opts, "", opt, AV_DICT_IGNORE_SUFFIX))) {
437  if ((ret = av_opt_set(*wctx, opt->key, opt->value, AV_OPT_SEARCH_CHILDREN)) < 0) {
438  av_log(*wctx, AV_LOG_ERROR, "Failed to set option '%s' with value '%s' provided to writer context\n",
439  opt->key, opt->value);
440  av_dict_free(&opts);
441  goto fail;
442  }
443  }
444 
445  av_dict_free(&opts);
446  }
447 
448  /* validate replace string */
449  {
450  const uint8_t *p = (*wctx)->string_validation_replacement;
451  const uint8_t *endp = p + strlen(p);
452  while (*p) {
453  const uint8_t *p0 = p;
454  int32_t code;
455  ret = av_utf8_decode(&code, &p, endp, (*wctx)->string_validation_utf8_flags);
456  if (ret < 0) {
457  AVBPrint bp;
459  bprint_bytes(&bp, p0, p-p0),
460  av_log(wctx, AV_LOG_ERROR,
461  "Invalid UTF8 sequence %s found in string validation replace '%s'\n",
462  bp.str, (*wctx)->string_validation_replacement);
463  return ret;
464  }
465  }
466  }
467 
468  for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
469  av_bprint_init(&(*wctx)->section_pbuf[i], 1, AV_BPRINT_SIZE_UNLIMITED);
470 
471  if ((*wctx)->writer->init)
472  ret = (*wctx)->writer->init(*wctx);
473  if (ret < 0)
474  goto fail;
475 
476  return 0;
477 
478 fail:
479  writer_close(wctx);
480  return ret;
481 }
482 
484  int section_id)
485 {
486  int parent_section_id;
487  wctx->level++;
489  parent_section_id = wctx->level ?
490  (wctx->section[wctx->level-1])->id : SECTION_ID_NONE;
491 
492  wctx->nb_item[wctx->level] = 0;
493  wctx->section[wctx->level] = &wctx->sections[section_id];
494 
495  if (section_id == SECTION_ID_PACKETS_AND_FRAMES) {
496  wctx->nb_section_packet = wctx->nb_section_frame =
497  wctx->nb_section_packet_frame = 0;
498  } else if (parent_section_id == SECTION_ID_PACKETS_AND_FRAMES) {
499  wctx->nb_section_packet_frame = section_id == SECTION_ID_PACKET ?
500  wctx->nb_section_packet : wctx->nb_section_frame;
501  }
502 
503  if (wctx->writer->print_section_header)
504  wctx->writer->print_section_header(wctx);
505 }
506 
508 {
509  int section_id = wctx->section[wctx->level]->id;
510  int parent_section_id = wctx->level ?
511  wctx->section[wctx->level-1]->id : SECTION_ID_NONE;
512 
513  if (parent_section_id != SECTION_ID_NONE)
514  wctx->nb_item[wctx->level-1]++;
515  if (parent_section_id == SECTION_ID_PACKETS_AND_FRAMES) {
516  if (section_id == SECTION_ID_PACKET) wctx->nb_section_packet++;
517  else wctx->nb_section_frame++;
518  }
519  if (wctx->writer->print_section_footer)
520  wctx->writer->print_section_footer(wctx);
521  wctx->level--;
522 }
523 
524 static inline void writer_print_integer(WriterContext *wctx,
525  const char *key, long long int val)
526 {
527  const struct section *section = wctx->section[wctx->level];
528 
529  if (section->show_all_entries || av_dict_get(section->entries_to_show, key, NULL, 0)) {
530  wctx->writer->print_integer(wctx, key, val);
531  wctx->nb_item[wctx->level]++;
532  }
533 }
534 
535 static inline int validate_string(WriterContext *wctx, char **dstp, const char *src)
536 {
537  const uint8_t *p, *endp;
538  AVBPrint dstbuf;
539  int invalid_chars_nb = 0, ret = 0;
540 
542 
543  endp = src + strlen(src);
544  for (p = (uint8_t *)src; *p;) {
545  uint32_t code;
546  int invalid = 0;
547  const uint8_t *p0 = p;
548 
549  if (av_utf8_decode(&code, &p, endp, wctx->string_validation_utf8_flags) < 0) {
550  AVBPrint bp;
552  bprint_bytes(&bp, p0, p-p0);
553  av_log(wctx, AV_LOG_DEBUG,
554  "Invalid UTF-8 sequence %s found in string '%s'\n", bp.str, src);
555  invalid = 1;
556  }
557 
558  if (invalid) {
559  invalid_chars_nb++;
560 
561  switch (wctx->string_validation) {
563  av_log(wctx, AV_LOG_ERROR,
564  "Invalid UTF-8 sequence found in string '%s'\n", src);
566  goto end;
567  break;
568 
570  av_bprintf(&dstbuf, "%s", wctx->string_validation_replacement);
571  break;
572  }
573  }
574 
575  if (!invalid || wctx->string_validation == WRITER_STRING_VALIDATION_IGNORE)
576  av_bprint_append_data(&dstbuf, p0, p-p0);
577  }
578 
579  if (invalid_chars_nb && wctx->string_validation == WRITER_STRING_VALIDATION_REPLACE) {
580  av_log(wctx, AV_LOG_WARNING,
581  "%d invalid UTF-8 sequence(s) found in string '%s', replaced with '%s'\n",
582  invalid_chars_nb, src, wctx->string_validation_replacement);
583  }
584 
585 end:
586  av_bprint_finalize(&dstbuf, dstp);
587  return ret;
588 }
589 
590 #define PRINT_STRING_OPT 1
591 #define PRINT_STRING_VALIDATE 2
592 
593 static inline int writer_print_string(WriterContext *wctx,
594  const char *key, const char *val, int flags)
595 {
596  const struct section *section = wctx->section[wctx->level];
597  int ret = 0;
598 
599  if ((flags & PRINT_STRING_OPT)
601  return 0;
602 
603  if (section->show_all_entries || av_dict_get(section->entries_to_show, key, NULL, 0)) {
604  if (flags & PRINT_STRING_VALIDATE) {
605  char *key1 = NULL, *val1 = NULL;
606  ret = validate_string(wctx, &key1, key);
607  if (ret < 0) goto end;
608  ret = validate_string(wctx, &val1, val);
609  if (ret < 0) goto end;
610  wctx->writer->print_string(wctx, key1, val1);
611  end:
612  if (ret < 0) {
613  av_log(wctx, AV_LOG_ERROR,
614  "Invalid key=value string combination %s=%s in section %s\n",
615  key, val, section->unique_name);
616  }
617  av_free(key1);
618  av_free(val1);
619  } else {
620  wctx->writer->print_string(wctx, key, val);
621  }
622 
623  wctx->nb_item[wctx->level]++;
624  }
625 
626  return ret;
627 }
628 
629 static inline void writer_print_rational(WriterContext *wctx,
630  const char *key, AVRational q, char sep)
631 {
632  AVBPrint buf;
634  av_bprintf(&buf, "%d%c%d", q.num, sep, q.den);
635  writer_print_string(wctx, key, buf.str, 0);
636 }
637 
638 static void writer_print_time(WriterContext *wctx, const char *key,
639  int64_t ts, const AVRational *time_base, int is_duration)
640 {
641  char buf[128];
642 
643  if ((!is_duration && ts == AV_NOPTS_VALUE) || (is_duration && ts == 0)) {
644  writer_print_string(wctx, key, "N/A", PRINT_STRING_OPT);
645  } else {
646  double d = ts * av_q2d(*time_base);
647  struct unit_value uv;
648  uv.val.d = d;
649  uv.unit = unit_second_str;
650  value_string(buf, sizeof(buf), uv);
651  writer_print_string(wctx, key, buf, 0);
652  }
653 }
654 
655 static void writer_print_ts(WriterContext *wctx, const char *key, int64_t ts, int is_duration)
656 {
657  if ((!is_duration && ts == AV_NOPTS_VALUE) || (is_duration && ts == 0)) {
658  writer_print_string(wctx, key, "N/A", PRINT_STRING_OPT);
659  } else {
660  writer_print_integer(wctx, key, ts);
661  }
662 }
663 
664 static void writer_print_data(WriterContext *wctx, const char *name,
665  uint8_t *data, int size)
666 {
667  AVBPrint bp;
668  int offset = 0, l, i;
669 
671  av_bprintf(&bp, "\n");
672  while (size) {
673  av_bprintf(&bp, "%08x: ", offset);
674  l = FFMIN(size, 16);
675  for (i = 0; i < l; i++) {
676  av_bprintf(&bp, "%02x", data[i]);
677  if (i & 1)
678  av_bprintf(&bp, " ");
679  }
680  av_bprint_chars(&bp, ' ', 41 - 2 * i - i / 2);
681  for (i = 0; i < l; i++)
682  av_bprint_chars(&bp, data[i] - 32U < 95 ? data[i] : '.', 1);
683  av_bprintf(&bp, "\n");
684  offset += l;
685  data += l;
686  size -= l;
687  }
688  writer_print_string(wctx, name, bp.str, 0);
689  av_bprint_finalize(&bp, NULL);
690 }
691 
692 static void writer_print_data_hash(WriterContext *wctx, const char *name,
693  uint8_t *data, int size)
694 {
695  char *p, buf[AV_HASH_MAX_SIZE * 2 + 64] = { 0 };
696 
697  if (!hash)
698  return;
699  av_hash_init(hash);
700  av_hash_update(hash, data, size);
701  snprintf(buf, sizeof(buf), "%s:", av_hash_get_name(hash));
702  p = buf + strlen(buf);
703  av_hash_final_hex(hash, p, buf + sizeof(buf) - p);
704  writer_print_string(wctx, name, buf, 0);
705 }
706 
707 #define MAX_REGISTERED_WRITERS_NB 64
708 
710 
711 static int writer_register(const Writer *writer)
712 {
713  static int next_registered_writer_idx = 0;
714 
715  if (next_registered_writer_idx == MAX_REGISTERED_WRITERS_NB)
716  return AVERROR(ENOMEM);
717 
718  registered_writers[next_registered_writer_idx++] = writer;
719  return 0;
720 }
721 
722 static const Writer *writer_get_by_name(const char *name)
723 {
724  int i;
725 
726  for (i = 0; registered_writers[i]; i++)
727  if (!strcmp(registered_writers[i]->name, name))
728  return registered_writers[i];
729 
730  return NULL;
731 }
732 
733 
734 /* WRITERS */
735 
736 #define DEFINE_WRITER_CLASS(name) \
737 static const char *name##_get_name(void *ctx) \
738 { \
739  return #name ; \
740 } \
741 static const AVClass name##_class = { \
742  .class_name = #name, \
743  .item_name = name##_get_name, \
744  .option = name##_options \
745 }
746 
747 /* Default output */
748 
749 typedef struct DefaultContext {
750  const AVClass *class;
751  int nokey;
755 
756 #undef OFFSET
757 #define OFFSET(x) offsetof(DefaultContext, x)
758 
759 static const AVOption default_options[] = {
760  { "noprint_wrappers", "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
761  { "nw", "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
762  { "nokey", "force no key printing", OFFSET(nokey), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
763  { "nk", "force no key printing", OFFSET(nokey), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
764  {NULL},
765 };
766 
767 DEFINE_WRITER_CLASS(default);
768 
769 /* lame uppercasing routine, assumes the string is lower case ASCII */
770 static inline char *upcase_string(char *dst, size_t dst_size, const char *src)
771 {
772  int i;
773  for (i = 0; src[i] && i < dst_size-1; i++)
774  dst[i] = av_toupper(src[i]);
775  dst[i] = 0;
776  return dst;
777 }
778 
780 {
781  DefaultContext *def = wctx->priv;
782  char buf[32];
783  const struct section *section = wctx->section[wctx->level];
784  const struct section *parent_section = wctx->level ?
785  wctx->section[wctx->level-1] : NULL;
786 
787  av_bprint_clear(&wctx->section_pbuf[wctx->level]);
788  if (parent_section &&
789  !(parent_section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY))) {
790  def->nested_section[wctx->level] = 1;
791  av_bprintf(&wctx->section_pbuf[wctx->level], "%s%s:",
792  wctx->section_pbuf[wctx->level-1].str,
793  upcase_string(buf, sizeof(buf),
794  av_x_if_null(section->element_name, section->name)));
795  }
796 
797  if (def->noprint_wrappers || def->nested_section[wctx->level])
798  return;
799 
801  printf("[%s]\n", upcase_string(buf, sizeof(buf), section->name));
802 }
803 
805 {
806  DefaultContext *def = wctx->priv;
807  const struct section *section = wctx->section[wctx->level];
808  char buf[32];
809 
810  if (def->noprint_wrappers || def->nested_section[wctx->level])
811  return;
812 
814  printf("[/%s]\n", upcase_string(buf, sizeof(buf), section->name));
815 }
816 
817 static void default_print_str(WriterContext *wctx, const char *key, const char *value)
818 {
819  DefaultContext *def = wctx->priv;
820 
821  if (!def->nokey)
822  printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
823  printf("%s\n", value);
824 }
825 
826 static void default_print_int(WriterContext *wctx, const char *key, long long int value)
827 {
828  DefaultContext *def = wctx->priv;
829 
830  if (!def->nokey)
831  printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
832  printf("%lld\n", value);
833 }
834 
835 static const Writer default_writer = {
836  .name = "default",
837  .priv_size = sizeof(DefaultContext),
840  .print_integer = default_print_int,
841  .print_string = default_print_str,
843  .priv_class = &default_class,
844 };
845 
846 /* Compact output */
847 
848 /**
849  * Apply C-language-like string escaping.
850  */
851 static const char *c_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
852 {
853  const char *p;
854 
855  for (p = src; *p; p++) {
856  switch (*p) {
857  case '\b': av_bprintf(dst, "%s", "\\b"); break;
858  case '\f': av_bprintf(dst, "%s", "\\f"); break;
859  case '\n': av_bprintf(dst, "%s", "\\n"); break;
860  case '\r': av_bprintf(dst, "%s", "\\r"); break;
861  case '\\': av_bprintf(dst, "%s", "\\\\"); break;
862  default:
863  if (*p == sep)
864  av_bprint_chars(dst, '\\', 1);
865  av_bprint_chars(dst, *p, 1);
866  }
867  }
868  return dst->str;
869 }
870 
871 /**
872  * Quote fields containing special characters, check RFC4180.
873  */
874 static const char *csv_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
875 {
876  char meta_chars[] = { sep, '"', '\n', '\r', '\0' };
877  int needs_quoting = !!src[strcspn(src, meta_chars)];
878 
879  if (needs_quoting)
880  av_bprint_chars(dst, '"', 1);
881 
882  for (; *src; src++) {
883  if (*src == '"')
884  av_bprint_chars(dst, '"', 1);
885  av_bprint_chars(dst, *src, 1);
886  }
887  if (needs_quoting)
888  av_bprint_chars(dst, '"', 1);
889  return dst->str;
890 }
891 
892 static const char *none_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
893 {
894  return src;
895 }
896 
897 typedef struct CompactContext {
898  const AVClass *class;
900  char item_sep;
901  int nokey;
904  const char * (*escape_str)(AVBPrint *dst, const char *src, const char sep, void *log_ctx);
909 
910 #undef OFFSET
911 #define OFFSET(x) offsetof(CompactContext, x)
912 
913 static const AVOption compact_options[]= {
914  {"item_sep", "set item separator", OFFSET(item_sep_str), AV_OPT_TYPE_STRING, {.str="|"}, CHAR_MIN, CHAR_MAX },
915  {"s", "set item separator", OFFSET(item_sep_str), AV_OPT_TYPE_STRING, {.str="|"}, CHAR_MIN, CHAR_MAX },
916  {"nokey", "force no key printing", OFFSET(nokey), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
917  {"nk", "force no key printing", OFFSET(nokey), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
918  {"escape", "set escape mode", OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"}, CHAR_MIN, CHAR_MAX },
919  {"e", "set escape mode", OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"}, CHAR_MIN, CHAR_MAX },
920  {"print_section", "print section name", OFFSET(print_section), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
921  {"p", "print section name", OFFSET(print_section), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
922  {NULL},
923 };
924 
925 DEFINE_WRITER_CLASS(compact);
926 
928 {
929  CompactContext *compact = wctx->priv;
930 
931  if (strlen(compact->item_sep_str) != 1) {
932  av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
933  compact->item_sep_str);
934  return AVERROR(EINVAL);
935  }
936  compact->item_sep = compact->item_sep_str[0];
937 
938  if (!strcmp(compact->escape_mode_str, "none")) compact->escape_str = none_escape_str;
939  else if (!strcmp(compact->escape_mode_str, "c" )) compact->escape_str = c_escape_str;
940  else if (!strcmp(compact->escape_mode_str, "csv" )) compact->escape_str = csv_escape_str;
941  else {
942  av_log(wctx, AV_LOG_ERROR, "Unknown escape mode '%s'\n", compact->escape_mode_str);
943  return AVERROR(EINVAL);
944  }
945 
946  return 0;
947 }
948 
950 {
951  CompactContext *compact = wctx->priv;
952  const struct section *section = wctx->section[wctx->level];
953  const struct section *parent_section = wctx->level ?
954  wctx->section[wctx->level-1] : NULL;
955  compact->terminate_line[wctx->level] = 1;
956  compact->has_nested_elems[wctx->level] = 0;
957 
958  av_bprint_clear(&wctx->section_pbuf[wctx->level]);
959  if (!(section->flags & SECTION_FLAG_IS_ARRAY) && parent_section &&
960  !(parent_section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY))) {
961  compact->nested_section[wctx->level] = 1;
962  compact->has_nested_elems[wctx->level-1] = 1;
963  av_bprintf(&wctx->section_pbuf[wctx->level], "%s%s:",
964  wctx->section_pbuf[wctx->level-1].str,
965  (char *)av_x_if_null(section->element_name, section->name));
966  wctx->nb_item[wctx->level] = wctx->nb_item[wctx->level-1];
967  } else {
968  if (parent_section && compact->has_nested_elems[wctx->level-1] &&
969  (section->flags & SECTION_FLAG_IS_ARRAY)) {
970  compact->terminate_line[wctx->level-1] = 0;
971  printf("\n");
972  }
973  if (compact->print_section &&
975  printf("%s%c", section->name, compact->item_sep);
976  }
977 }
978 
980 {
981  CompactContext *compact = wctx->priv;
982 
983  if (!compact->nested_section[wctx->level] &&
984  compact->terminate_line[wctx->level] &&
986  printf("\n");
987 }
988 
989 static void compact_print_str(WriterContext *wctx, const char *key, const char *value)
990 {
991  CompactContext *compact = wctx->priv;
992  AVBPrint buf;
993 
994  if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);
995  if (!compact->nokey)
996  printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
998  printf("%s", compact->escape_str(&buf, value, compact->item_sep, wctx));
999  av_bprint_finalize(&buf, NULL);
1000 }
1001 
1002 static void compact_print_int(WriterContext *wctx, const char *key, long long int value)
1003 {
1004  CompactContext *compact = wctx->priv;
1005 
1006  if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);
1007  if (!compact->nokey)
1008  printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
1009  printf("%lld", value);
1010 }
1011 
1012 static const Writer compact_writer = {
1013  .name = "compact",
1014  .priv_size = sizeof(CompactContext),
1015  .init = compact_init,
1018  .print_integer = compact_print_int,
1019  .print_string = compact_print_str,
1021  .priv_class = &compact_class,
1022 };
1023 
1024 /* CSV output */
1025 
1026 #undef OFFSET
1027 #define OFFSET(x) offsetof(CompactContext, x)
1028 
1029 static const AVOption csv_options[] = {
1030  {"item_sep", "set item separator", OFFSET(item_sep_str), AV_OPT_TYPE_STRING, {.str=","}, CHAR_MIN, CHAR_MAX },
1031  {"s", "set item separator", OFFSET(item_sep_str), AV_OPT_TYPE_STRING, {.str=","}, CHAR_MIN, CHAR_MAX },
1032  {"nokey", "force no key printing", OFFSET(nokey), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
1033  {"nk", "force no key printing", OFFSET(nokey), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
1034  {"escape", "set escape mode", OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="csv"}, CHAR_MIN, CHAR_MAX },
1035  {"e", "set escape mode", OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="csv"}, CHAR_MIN, CHAR_MAX },
1036  {"print_section", "print section name", OFFSET(print_section), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
1037  {"p", "print section name", OFFSET(print_section), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
1038  {NULL},
1039 };
1040 
1041 DEFINE_WRITER_CLASS(csv);
1042 
1043 static const Writer csv_writer = {
1044  .name = "csv",
1045  .priv_size = sizeof(CompactContext),
1046  .init = compact_init,
1049  .print_integer = compact_print_int,
1050  .print_string = compact_print_str,
1052  .priv_class = &csv_class,
1053 };
1054 
1055 /* Flat output */
1056 
1057 typedef struct FlatContext {
1058  const AVClass *class;
1059  const char *sep_str;
1060  char sep;
1062 } FlatContext;
1063 
1064 #undef OFFSET
1065 #define OFFSET(x) offsetof(FlatContext, x)
1066 
1067 static const AVOption flat_options[]= {
1068  {"sep_char", "set separator", OFFSET(sep_str), AV_OPT_TYPE_STRING, {.str="."}, CHAR_MIN, CHAR_MAX },
1069  {"s", "set separator", OFFSET(sep_str), AV_OPT_TYPE_STRING, {.str="."}, CHAR_MIN, CHAR_MAX },
1070  {"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
1071  {"h", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
1072  {NULL},
1073 };
1074 
1075 DEFINE_WRITER_CLASS(flat);
1076 
1078 {
1079  FlatContext *flat = wctx->priv;
1080 
1081  if (strlen(flat->sep_str) != 1) {
1082  av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
1083  flat->sep_str);
1084  return AVERROR(EINVAL);
1085  }
1086  flat->sep = flat->sep_str[0];
1087 
1088  return 0;
1089 }
1090 
1091 static const char *flat_escape_key_str(AVBPrint *dst, const char *src, const char sep)
1092 {
1093  const char *p;
1094 
1095  for (p = src; *p; p++) {
1096  if (!((*p >= '0' && *p <= '9') ||
1097  (*p >= 'a' && *p <= 'z') ||
1098  (*p >= 'A' && *p <= 'Z')))
1099  av_bprint_chars(dst, '_', 1);
1100  else
1101  av_bprint_chars(dst, *p, 1);
1102  }
1103  return dst->str;
1104 }
1105 
1106 static const char *flat_escape_value_str(AVBPrint *dst, const char *src)
1107 {
1108  const char *p;
1109 
1110  for (p = src; *p; p++) {
1111  switch (*p) {
1112  case '\n': av_bprintf(dst, "%s", "\\n"); break;
1113  case '\r': av_bprintf(dst, "%s", "\\r"); break;
1114  case '\\': av_bprintf(dst, "%s", "\\\\"); break;
1115  case '"': av_bprintf(dst, "%s", "\\\""); break;
1116  case '`': av_bprintf(dst, "%s", "\\`"); break;
1117  case '$': av_bprintf(dst, "%s", "\\$"); break;
1118  default: av_bprint_chars(dst, *p, 1); break;
1119  }
1120  }
1121  return dst->str;
1122 }
1123 
1125 {
1126  FlatContext *flat = wctx->priv;
1127  AVBPrint *buf = &wctx->section_pbuf[wctx->level];
1128  const struct section *section = wctx->section[wctx->level];
1129  const struct section *parent_section = wctx->level ?
1130  wctx->section[wctx->level-1] : NULL;
1131 
1132  /* build section header */
1133  av_bprint_clear(buf);
1134  if (!parent_section)
1135  return;
1136  av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);
1137 
1138  if (flat->hierarchical ||
1140  av_bprintf(buf, "%s%s", wctx->section[wctx->level]->name, flat->sep_str);
1141 
1142  if (parent_section->flags & SECTION_FLAG_IS_ARRAY) {
1143  int n = parent_section->id == SECTION_ID_PACKETS_AND_FRAMES ?
1144  wctx->nb_section_packet_frame : wctx->nb_item[wctx->level-1];
1145  av_bprintf(buf, "%d%s", n, flat->sep_str);
1146  }
1147  }
1148 }
1149 
1150 static void flat_print_int(WriterContext *wctx, const char *key, long long int value)
1151 {
1152  printf("%s%s=%lld\n", wctx->section_pbuf[wctx->level].str, key, value);
1153 }
1154 
1155 static void flat_print_str(WriterContext *wctx, const char *key, const char *value)
1156 {
1157  FlatContext *flat = wctx->priv;
1158  AVBPrint buf;
1159 
1160  printf("%s", wctx->section_pbuf[wctx->level].str);
1162  printf("%s=", flat_escape_key_str(&buf, key, flat->sep));
1163  av_bprint_clear(&buf);
1164  printf("\"%s\"\n", flat_escape_value_str(&buf, value));
1165  av_bprint_finalize(&buf, NULL);
1166 }
1167 
1168 static const Writer flat_writer = {
1169  .name = "flat",
1170  .priv_size = sizeof(FlatContext),
1171  .init = flat_init,
1173  .print_integer = flat_print_int,
1174  .print_string = flat_print_str,
1176  .priv_class = &flat_class,
1177 };
1178 
1179 /* INI format output */
1180 
1181 typedef struct {
1182  const AVClass *class;
1184 } INIContext;
1185 
1186 #undef OFFSET
1187 #define OFFSET(x) offsetof(INIContext, x)
1188 
1189 static const AVOption ini_options[] = {
1190  {"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
1191  {"h", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
1192  {NULL},
1193 };
1194 
1195 DEFINE_WRITER_CLASS(ini);
1196 
1197 static char *ini_escape_str(AVBPrint *dst, const char *src)
1198 {
1199  int i = 0;
1200  char c = 0;
1201 
1202  while (c = src[i++]) {
1203  switch (c) {
1204  case '\b': av_bprintf(dst, "%s", "\\b"); break;
1205  case '\f': av_bprintf(dst, "%s", "\\f"); break;
1206  case '\n': av_bprintf(dst, "%s", "\\n"); break;
1207  case '\r': av_bprintf(dst, "%s", "\\r"); break;
1208  case '\t': av_bprintf(dst, "%s", "\\t"); break;
1209  case '\\':
1210  case '#' :
1211  case '=' :
1212  case ':' : av_bprint_chars(dst, '\\', 1);
1213  default:
1214  if ((unsigned char)c < 32)
1215  av_bprintf(dst, "\\x00%02x", c & 0xff);
1216  else
1217  av_bprint_chars(dst, c, 1);
1218  break;
1219  }
1220  }
1221  return dst->str;
1222 }
1223 
1225 {
1226  INIContext *ini = wctx->priv;
1227  AVBPrint *buf = &wctx->section_pbuf[wctx->level];
1228  const struct section *section = wctx->section[wctx->level];
1229  const struct section *parent_section = wctx->level ?
1230  wctx->section[wctx->level-1] : NULL;
1231 
1232  av_bprint_clear(buf);
1233  if (!parent_section) {
1234  printf("# ffprobe output\n\n");
1235  return;
1236  }
1237 
1238  if (wctx->nb_item[wctx->level-1])
1239  printf("\n");
1240 
1241  av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);
1242  if (ini->hierarchical ||
1244  av_bprintf(buf, "%s%s", buf->str[0] ? "." : "", wctx->section[wctx->level]->name);
1245 
1246  if (parent_section->flags & SECTION_FLAG_IS_ARRAY) {
1247  int n = parent_section->id == SECTION_ID_PACKETS_AND_FRAMES ?
1248  wctx->nb_section_packet_frame : wctx->nb_item[wctx->level-1];
1249  av_bprintf(buf, ".%d", n);
1250  }
1251  }
1252 
1254  printf("[%s]\n", buf->str);
1255 }
1256 
1257 static void ini_print_str(WriterContext *wctx, const char *key, const char *value)
1258 {
1259  AVBPrint buf;
1260 
1262  printf("%s=", ini_escape_str(&buf, key));
1263  av_bprint_clear(&buf);
1264  printf("%s\n", ini_escape_str(&buf, value));
1265  av_bprint_finalize(&buf, NULL);
1266 }
1267 
1268 static void ini_print_int(WriterContext *wctx, const char *key, long long int value)
1269 {
1270  printf("%s=%lld\n", key, value);
1271 }
1272 
1273 static const Writer ini_writer = {
1274  .name = "ini",
1275  .priv_size = sizeof(INIContext),
1277  .print_integer = ini_print_int,
1278  .print_string = ini_print_str,
1280  .priv_class = &ini_class,
1281 };
1282 
1283 /* JSON output */
1284 
1285 typedef struct {
1286  const AVClass *class;
1288  int compact;
1289  const char *item_sep, *item_start_end;
1290 } JSONContext;
1291 
1292 #undef OFFSET
1293 #define OFFSET(x) offsetof(JSONContext, x)
1294 
1295 static const AVOption json_options[]= {
1296  { "compact", "enable compact output", OFFSET(compact), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
1297  { "c", "enable compact output", OFFSET(compact), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
1298  { NULL }
1299 };
1300 
1301 DEFINE_WRITER_CLASS(json);
1302 
1304 {
1305  JSONContext *json = wctx->priv;
1306 
1307  json->item_sep = json->compact ? ", " : ",\n";
1308  json->item_start_end = json->compact ? " " : "\n";
1309 
1310  return 0;
1311 }
1312 
1313 static const char *json_escape_str(AVBPrint *dst, const char *src, void *log_ctx)
1314 {
1315  static const char json_escape[] = {'"', '\\', '\b', '\f', '\n', '\r', '\t', 0};
1316  static const char json_subst[] = {'"', '\\', 'b', 'f', 'n', 'r', 't', 0};
1317  const char *p;
1318 
1319  for (p = src; *p; p++) {
1320  char *s = strchr(json_escape, *p);
1321  if (s) {
1322  av_bprint_chars(dst, '\\', 1);
1323  av_bprint_chars(dst, json_subst[s - json_escape], 1);
1324  } else if ((unsigned char)*p < 32) {
1325  av_bprintf(dst, "\\u00%02x", *p & 0xff);
1326  } else {
1327  av_bprint_chars(dst, *p, 1);
1328  }
1329  }
1330  return dst->str;
1331 }
1332 
1333 #define JSON_INDENT() printf("%*c", json->indent_level * 4, ' ')
1334 
1336 {
1337  JSONContext *json = wctx->priv;
1338  AVBPrint buf;
1339  const struct section *section = wctx->section[wctx->level];
1340  const struct section *parent_section = wctx->level ?
1341  wctx->section[wctx->level-1] : NULL;
1342 
1343  if (wctx->level && wctx->nb_item[wctx->level-1])
1344  printf(",\n");
1345 
1346  if (section->flags & SECTION_FLAG_IS_WRAPPER) {
1347  printf("{\n");
1348  json->indent_level++;
1349  } else {
1351  json_escape_str(&buf, section->name, wctx);
1352  JSON_INDENT();
1353 
1354  json->indent_level++;
1355  if (section->flags & SECTION_FLAG_IS_ARRAY) {
1356  printf("\"%s\": [\n", buf.str);
1357  } else if (parent_section && !(parent_section->flags & SECTION_FLAG_IS_ARRAY)) {
1358  printf("\"%s\": {%s", buf.str, json->item_start_end);
1359  } else {
1360  printf("{%s", json->item_start_end);
1361 
1362  /* this is required so the parser can distinguish between packets and frames */
1363  if (parent_section && parent_section->id == SECTION_ID_PACKETS_AND_FRAMES) {
1364  if (!json->compact)
1365  JSON_INDENT();
1366  printf("\"type\": \"%s\"%s", section->name, json->item_sep);
1367  }
1368  }
1369  av_bprint_finalize(&buf, NULL);
1370  }
1371 }
1372 
1374 {
1375  JSONContext *json = wctx->priv;
1376  const struct section *section = wctx->section[wctx->level];
1377 
1378  if (wctx->level == 0) {
1379  json->indent_level--;
1380  printf("\n}\n");
1381  } else if (section->flags & SECTION_FLAG_IS_ARRAY) {
1382  printf("\n");
1383  json->indent_level--;
1384  JSON_INDENT();
1385  printf("]");
1386  } else {
1387  printf("%s", json->item_start_end);
1388  json->indent_level--;
1389  if (!json->compact)
1390  JSON_INDENT();
1391  printf("}");
1392  }
1393 }
1394 
1395 static inline void json_print_item_str(WriterContext *wctx,
1396  const char *key, const char *value)
1397 {
1398  AVBPrint buf;
1399 
1401  printf("\"%s\":", json_escape_str(&buf, key, wctx));
1402  av_bprint_clear(&buf);
1403  printf(" \"%s\"", json_escape_str(&buf, value, wctx));
1404  av_bprint_finalize(&buf, NULL);
1405 }
1406 
1407 static void json_print_str(WriterContext *wctx, const char *key, const char *value)
1408 {
1409  JSONContext *json = wctx->priv;
1410 
1411  if (wctx->nb_item[wctx->level])
1412  printf("%s", json->item_sep);
1413  if (!json->compact)
1414  JSON_INDENT();
1415  json_print_item_str(wctx, key, value);
1416 }
1417 
1418 static void json_print_int(WriterContext *wctx, const char *key, long long int value)
1419 {
1420  JSONContext *json = wctx->priv;
1421  AVBPrint buf;
1422 
1423  if (wctx->nb_item[wctx->level])
1424  printf("%s", json->item_sep);
1425  if (!json->compact)
1426  JSON_INDENT();
1427 
1429  printf("\"%s\": %lld", json_escape_str(&buf, key, wctx), value);
1430  av_bprint_finalize(&buf, NULL);
1431 }
1432 
1433 static const Writer json_writer = {
1434  .name = "json",
1435  .priv_size = sizeof(JSONContext),
1436  .init = json_init,
1439  .print_integer = json_print_int,
1440  .print_string = json_print_str,
1442  .priv_class = &json_class,
1443 };
1444 
1445 /* XML output */
1446 
1447 typedef struct {
1448  const AVClass *class;
1453 } XMLContext;
1454 
1455 #undef OFFSET
1456 #define OFFSET(x) offsetof(XMLContext, x)
1457 
1458 static const AVOption xml_options[] = {
1459  {"fully_qualified", "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
1460  {"q", "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
1461  {"xsd_strict", "ensure that the output is XSD compliant", OFFSET(xsd_strict), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
1462  {"x", "ensure that the output is XSD compliant", OFFSET(xsd_strict), AV_OPT_TYPE_INT, {.i64=0}, 0, 1 },
1463  {NULL},
1464 };
1465 
1466 DEFINE_WRITER_CLASS(xml);
1467 
1468 static av_cold int xml_init(WriterContext *wctx)
1469 {
1470  XMLContext *xml = wctx->priv;
1471 
1472  if (xml->xsd_strict) {
1473  xml->fully_qualified = 1;
1474 #define CHECK_COMPLIANCE(opt, opt_name) \
1475  if (opt) { \
1476  av_log(wctx, AV_LOG_ERROR, \
1477  "XSD-compliant output selected but option '%s' was selected, XML output may be non-compliant.\n" \
1478  "You need to disable such option with '-no%s'\n", opt_name, opt_name); \
1479  return AVERROR(EINVAL); \
1480  }
1481  CHECK_COMPLIANCE(show_private_data, "private");
1484 
1486  av_log(wctx, AV_LOG_ERROR,
1487  "Interleaved frames and packets are not allowed in XSD. "
1488  "Select only one between the -show_frames and the -show_packets options.\n");
1489  return AVERROR(EINVAL);
1490  }
1491  }
1492 
1493  return 0;
1494 }
1495 
1496 static const char *xml_escape_str(AVBPrint *dst, const char *src, void *log_ctx)
1497 {
1498  const char *p;
1499 
1500  for (p = src; *p; p++) {
1501  switch (*p) {
1502  case '&' : av_bprintf(dst, "%s", "&amp;"); break;
1503  case '<' : av_bprintf(dst, "%s", "&lt;"); break;
1504  case '>' : av_bprintf(dst, "%s", "&gt;"); break;
1505  case '"' : av_bprintf(dst, "%s", "&quot;"); break;
1506  case '\'': av_bprintf(dst, "%s", "&apos;"); break;
1507  default: av_bprint_chars(dst, *p, 1);
1508  }
1509  }
1510 
1511  return dst->str;
1512 }
1513 
1514 #define XML_INDENT() printf("%*c", xml->indent_level * 4, ' ')
1515 
1517 {
1518  XMLContext *xml = wctx->priv;
1519  const struct section *section = wctx->section[wctx->level];
1520  const struct section *parent_section = wctx->level ?
1521  wctx->section[wctx->level-1] : NULL;
1522 
1523  if (wctx->level == 0) {
1524  const char *qual = " xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' "
1525  "xmlns:ffprobe='http://www.ffmpeg.org/schema/ffprobe' "
1526  "xsi:schemaLocation='http://www.ffmpeg.org/schema/ffprobe ffprobe.xsd'";
1527 
1528  printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
1529  printf("<%sffprobe%s>\n",
1530  xml->fully_qualified ? "ffprobe:" : "",
1531  xml->fully_qualified ? qual : "");
1532  return;
1533  }
1534 
1535  if (xml->within_tag) {
1536  xml->within_tag = 0;
1537  printf(">\n");
1538  }
1539  if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {
1540  xml->indent_level++;
1541  } else {
1542  if (parent_section && (parent_section->flags & SECTION_FLAG_IS_WRAPPER) &&
1543  wctx->level && wctx->nb_item[wctx->level-1])
1544  printf("\n");
1545  xml->indent_level++;
1546 
1547  if (section->flags & SECTION_FLAG_IS_ARRAY) {
1548  XML_INDENT(); printf("<%s>\n", section->name);
1549  } else {
1550  XML_INDENT(); printf("<%s ", section->name);
1551  xml->within_tag = 1;
1552  }
1553  }
1554 }
1555 
1557 {
1558  XMLContext *xml = wctx->priv;
1559  const struct section *section = wctx->section[wctx->level];
1560 
1561  if (wctx->level == 0) {
1562  printf("</%sffprobe>\n", xml->fully_qualified ? "ffprobe:" : "");
1563  } else if (xml->within_tag) {
1564  xml->within_tag = 0;
1565  printf("/>\n");
1566  xml->indent_level--;
1567  } else if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {
1568  xml->indent_level--;
1569  } else {
1570  XML_INDENT(); printf("</%s>\n", section->name);
1571  xml->indent_level--;
1572  }
1573 }
1574 
1575 static void xml_print_str(WriterContext *wctx, const char *key, const char *value)
1576 {
1577  AVBPrint buf;
1578  XMLContext *xml = wctx->priv;
1579  const struct section *section = wctx->section[wctx->level];
1580 
1582 
1583  if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {
1584  XML_INDENT();
1585  printf("<%s key=\"%s\"",
1586  section->element_name, xml_escape_str(&buf, key, wctx));
1587  av_bprint_clear(&buf);
1588  printf(" value=\"%s\"/>\n", xml_escape_str(&buf, value, wctx));
1589  } else {
1590  if (wctx->nb_item[wctx->level])
1591  printf(" ");
1592  printf("%s=\"%s\"", key, xml_escape_str(&buf, value, wctx));
1593  }
1594 
1595  av_bprint_finalize(&buf, NULL);
1596 }
1597 
1598 static void xml_print_int(WriterContext *wctx, const char *key, long long int value)
1599 {
1600  if (wctx->nb_item[wctx->level])
1601  printf(" ");
1602  printf("%s=\"%lld\"", key, value);
1603 }
1604 
1605 static Writer xml_writer = {
1606  .name = "xml",
1607  .priv_size = sizeof(XMLContext),
1608  .init = xml_init,
1611  .print_integer = xml_print_int,
1612  .print_string = xml_print_str,
1614  .priv_class = &xml_class,
1615 };
1616 
1617 static void writer_register_all(void)
1618 {
1619  static int initialized;
1620 
1621  if (initialized)
1622  return;
1623  initialized = 1;
1624 
1625  writer_register(&default_writer);
1626  writer_register(&compact_writer);
1627  writer_register(&csv_writer);
1628  writer_register(&flat_writer);
1629  writer_register(&ini_writer);
1630  writer_register(&json_writer);
1631  writer_register(&xml_writer);
1632 }
1633 
1634 #define print_fmt(k, f, ...) do { \
1635  av_bprint_clear(&pbuf); \
1636  av_bprintf(&pbuf, f, __VA_ARGS__); \
1637  writer_print_string(w, k, pbuf.str, 0); \
1638 } while (0)
1639 
1640 #define print_int(k, v) writer_print_integer(w, k, v)
1641 #define print_q(k, v, s) writer_print_rational(w, k, v, s)
1642 #define print_str(k, v) writer_print_string(w, k, v, 0)
1643 #define print_str_opt(k, v) writer_print_string(w, k, v, PRINT_STRING_OPT)
1644 #define print_str_validate(k, v) writer_print_string(w, k, v, PRINT_STRING_VALIDATE)
1645 #define print_time(k, v, tb) writer_print_time(w, k, v, tb, 0)
1646 #define print_ts(k, v) writer_print_ts(w, k, v, 0)
1647 #define print_duration_time(k, v, tb) writer_print_time(w, k, v, tb, 1)
1648 #define print_duration_ts(k, v) writer_print_ts(w, k, v, 1)
1649 #define print_val(k, v, u) do { \
1650  struct unit_value uv; \
1651  uv.val.i = v; \
1652  uv.unit = u; \
1653  writer_print_string(w, k, value_string(val_str, sizeof(val_str), uv), 0); \
1654 } while (0)
1655 
1656 #define print_section_header(s) writer_print_section_header(w, s)
1657 #define print_section_footer(s) writer_print_section_footer(w, s)
1658 
1659 #define REALLOCZ_ARRAY_STREAM(ptr, cur_n, new_n) \
1660 { \
1661  ret = av_reallocp_array(&(ptr), (new_n), sizeof(*(ptr))); \
1662  if (ret < 0) \
1663  goto end; \
1664  memset( (ptr) + (cur_n), 0, ((new_n) - (cur_n)) * sizeof(*(ptr)) ); \
1665 }
1666 
1667 static inline int show_tags(WriterContext *w, AVDictionary *tags, int section_id)
1668 {
1669  AVDictionaryEntry *tag = NULL;
1670  int ret = 0;
1671 
1672  if (!tags)
1673  return 0;
1674  writer_print_section_header(w, section_id);
1675 
1676  while ((tag = av_dict_get(tags, "", tag, AV_DICT_IGNORE_SUFFIX))) {
1677  if ((ret = print_str_validate(tag->key, tag->value)) < 0)
1678  break;
1679  }
1681 
1682  return ret;
1683 }
1684 
1685 static void show_packet(WriterContext *w, AVFormatContext *fmt_ctx, AVPacket *pkt, int packet_idx)
1686 {
1687  char val_str[128];
1688  AVStream *st = fmt_ctx->streams[pkt->stream_index];
1689  AVBPrint pbuf;
1690  const char *s;
1691 
1693 
1695 
1697  if (s) print_str ("codec_type", s);
1698  else print_str_opt("codec_type", "unknown");
1699  print_int("stream_index", pkt->stream_index);
1700  print_ts ("pts", pkt->pts);
1701  print_time("pts_time", pkt->pts, &st->time_base);
1702  print_ts ("dts", pkt->dts);
1703  print_time("dts_time", pkt->dts, &st->time_base);
1704  print_duration_ts("duration", pkt->duration);
1705  print_duration_time("duration_time", pkt->duration, &st->time_base);
1706  print_duration_ts("convergence_duration", pkt->convergence_duration);
1707  print_duration_time("convergence_duration_time", pkt->convergence_duration, &st->time_base);
1708  print_val("size", pkt->size, unit_byte_str);
1709  if (pkt->pos != -1) print_fmt ("pos", "%"PRId64, pkt->pos);
1710  else print_str_opt("pos", "N/A");
1711  print_fmt("flags", "%c", pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_');
1712  if (do_show_data)
1713  writer_print_data(w, "data", pkt->data, pkt->size);
1714  writer_print_data_hash(w, "data_hash", pkt->data, pkt->size);
1716 
1717  av_bprint_finalize(&pbuf, NULL);
1718  fflush(stdout);
1719 }
1720 
1721 static void show_subtitle(WriterContext *w, AVSubtitle *sub, AVStream *stream,
1723 {
1724  AVBPrint pbuf;
1725 
1727 
1729 
1730  print_str ("media_type", "subtitle");
1731  print_ts ("pts", sub->pts);
1732  print_time("pts_time", sub->pts, &AV_TIME_BASE_Q);
1733  print_int ("format", sub->format);
1734  print_int ("start_display_time", sub->start_display_time);
1735  print_int ("end_display_time", sub->end_display_time);
1736  print_int ("num_rects", sub->num_rects);
1737 
1739 
1740  av_bprint_finalize(&pbuf, NULL);
1741  fflush(stdout);
1742 }
1743 
1744 static void show_frame(WriterContext *w, AVFrame *frame, AVStream *stream,
1746 {
1747  AVBPrint pbuf;
1748  const char *s;
1749  int i;
1750 
1752 
1754 
1756  if (s) print_str ("media_type", s);
1757  else print_str_opt("media_type", "unknown");
1758  print_int("key_frame", frame->key_frame);
1759  print_ts ("pkt_pts", frame->pkt_pts);
1760  print_time("pkt_pts_time", frame->pkt_pts, &stream->time_base);
1761  print_ts ("pkt_dts", frame->pkt_dts);
1762  print_time("pkt_dts_time", frame->pkt_dts, &stream->time_base);
1763  print_ts ("best_effort_timestamp", av_frame_get_best_effort_timestamp(frame));
1764  print_time("best_effort_timestamp_time", av_frame_get_best_effort_timestamp(frame), &stream->time_base);
1765  print_duration_ts ("pkt_duration", av_frame_get_pkt_duration(frame));
1766  print_duration_time("pkt_duration_time", av_frame_get_pkt_duration(frame), &stream->time_base);
1767  if (av_frame_get_pkt_pos (frame) != -1) print_fmt ("pkt_pos", "%"PRId64, av_frame_get_pkt_pos(frame));
1768  else print_str_opt("pkt_pos", "N/A");
1769  if (av_frame_get_pkt_size(frame) != -1) print_fmt ("pkt_size", "%d", av_frame_get_pkt_size(frame));
1770  else print_str_opt("pkt_size", "N/A");
1771 
1772  switch (stream->codec->codec_type) {
1773  AVRational sar;
1774 
1775  case AVMEDIA_TYPE_VIDEO:
1776  print_int("width", frame->width);
1777  print_int("height", frame->height);
1778  s = av_get_pix_fmt_name(frame->format);
1779  if (s) print_str ("pix_fmt", s);
1780  else print_str_opt("pix_fmt", "unknown");
1781  sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, frame);
1782  if (sar.num) {
1783  print_q("sample_aspect_ratio", sar, ':');
1784  } else {
1785  print_str_opt("sample_aspect_ratio", "N/A");
1786  }
1787  print_fmt("pict_type", "%c", av_get_picture_type_char(frame->pict_type));
1788  print_int("coded_picture_number", frame->coded_picture_number);
1789  print_int("display_picture_number", frame->display_picture_number);
1790  print_int("interlaced_frame", frame->interlaced_frame);
1791  print_int("top_field_first", frame->top_field_first);
1792  print_int("repeat_pict", frame->repeat_pict);
1793  break;
1794 
1795  case AVMEDIA_TYPE_AUDIO:
1796  s = av_get_sample_fmt_name(frame->format);
1797  if (s) print_str ("sample_fmt", s);
1798  else print_str_opt("sample_fmt", "unknown");
1799  print_int("nb_samples", frame->nb_samples);
1800  print_int("channels", av_frame_get_channels(frame));
1801  if (av_frame_get_channel_layout(frame)) {
1802  av_bprint_clear(&pbuf);
1805  print_str ("channel_layout", pbuf.str);
1806  } else
1807  print_str_opt("channel_layout", "unknown");
1808  break;
1809  }
1810  if (do_show_frame_tags)
1812  if (frame->nb_side_data) {
1814  for (i = 0; i < frame->nb_side_data; i++) {
1815  AVFrameSideData *sd = frame->side_data[i];
1816  const char *name;
1817 
1819  name = av_frame_side_data_name(sd->type);
1820  print_str("side_data_type", name ? name : "unknown");
1821  print_int("side_data_size", sd->size);
1823  }
1825  }
1826 
1828 
1829  av_bprint_finalize(&pbuf, NULL);
1830  fflush(stdout);
1831 }
1832 
1836 {
1837  AVCodecContext *dec_ctx = fmt_ctx->streams[pkt->stream_index]->codec;
1838  AVSubtitle sub;
1839  int ret = 0, got_frame = 0;
1840 
1841  if (dec_ctx->codec) {
1842  switch (dec_ctx->codec_type) {
1843  case AVMEDIA_TYPE_VIDEO:
1844  ret = avcodec_decode_video2(dec_ctx, frame, &got_frame, pkt);
1845  break;
1846 
1847  case AVMEDIA_TYPE_AUDIO:
1848  ret = avcodec_decode_audio4(dec_ctx, frame, &got_frame, pkt);
1849  break;
1850 
1851  case AVMEDIA_TYPE_SUBTITLE:
1852  ret = avcodec_decode_subtitle2(dec_ctx, &sub, &got_frame, pkt);
1853  break;
1854  }
1855  }
1856 
1857  if (ret < 0)
1858  return ret;
1859  ret = FFMIN(ret, pkt->size); /* guard against bogus return values */
1860  pkt->data += ret;
1861  pkt->size -= ret;
1862  if (got_frame) {
1863  int is_sub = (dec_ctx->codec_type == AVMEDIA_TYPE_SUBTITLE);
1865  if (do_show_frames)
1866  if (is_sub)
1867  show_subtitle(w, &sub, fmt_ctx->streams[pkt->stream_index], fmt_ctx);
1868  else
1869  show_frame(w, frame, fmt_ctx->streams[pkt->stream_index], fmt_ctx);
1870  if (is_sub)
1871  avsubtitle_free(&sub);
1872  }
1873  return got_frame;
1874 }
1875 
1876 static void log_read_interval(const ReadInterval *interval, void *log_ctx, int log_level)
1877 {
1878  av_log(log_ctx, log_level, "id:%d", interval->id);
1879 
1880  if (interval->has_start) {
1881  av_log(log_ctx, log_level, " start:%s%s", interval->start_is_offset ? "+" : "",
1882  av_ts2timestr(interval->start, &AV_TIME_BASE_Q));
1883  } else {
1884  av_log(log_ctx, log_level, " start:N/A");
1885  }
1886 
1887  if (interval->has_end) {
1888  av_log(log_ctx, log_level, " end:%s", interval->end_is_offset ? "+" : "");
1889  if (interval->duration_frames)
1890  av_log(log_ctx, log_level, "#%"PRId64, interval->end);
1891  else
1892  av_log(log_ctx, log_level, "%s", av_ts2timestr(interval->end, &AV_TIME_BASE_Q));
1893  } else {
1894  av_log(log_ctx, log_level, " end:N/A");
1895  }
1896 
1897  av_log(log_ctx, log_level, "\n");
1898 }
1899 
1901  const ReadInterval *interval, int64_t *cur_ts)
1902 {
1903  AVPacket pkt, pkt1;
1904  AVFrame *frame = NULL;
1905  int ret = 0, i = 0, frame_count = 0;
1906  int64_t start = -INT64_MAX, end = interval->end;
1907  int has_start = 0, has_end = interval->has_end && !interval->end_is_offset;
1908 
1909  av_init_packet(&pkt);
1910 
1911  av_log(NULL, AV_LOG_VERBOSE, "Processing read interval ");
1912  log_read_interval(interval, NULL, AV_LOG_VERBOSE);
1913 
1914  if (interval->has_start) {
1915  int64_t target;
1916  if (interval->start_is_offset) {
1917  if (*cur_ts == AV_NOPTS_VALUE) {
1918  av_log(NULL, AV_LOG_ERROR,
1919  "Could not seek to relative position since current "
1920  "timestamp is not defined\n");
1921  ret = AVERROR(EINVAL);
1922  goto end;
1923  }
1924  target = *cur_ts + interval->start;
1925  } else {
1926  target = interval->start;
1927  }
1928 
1929  av_log(NULL, AV_LOG_VERBOSE, "Seeking to read interval start point %s\n",
1930  av_ts2timestr(target, &AV_TIME_BASE_Q));
1931  if ((ret = avformat_seek_file(fmt_ctx, -1, -INT64_MAX, target, INT64_MAX, 0)) < 0) {
1932  av_log(NULL, AV_LOG_ERROR, "Could not seek to position %"PRId64": %s\n",
1933  interval->start, av_err2str(ret));
1934  goto end;
1935  }
1936  }
1937 
1938  frame = av_frame_alloc();
1939  if (!frame) {
1940  ret = AVERROR(ENOMEM);
1941  goto end;
1942  }
1943  while (!av_read_frame(fmt_ctx, &pkt)) {
1944  if (fmt_ctx->nb_streams > nb_streams) {
1948  nb_streams = fmt_ctx->nb_streams;
1949  }
1950  if (selected_streams[pkt.stream_index]) {
1951  AVRational tb = fmt_ctx->streams[pkt.stream_index]->time_base;
1952 
1953  if (pkt.pts != AV_NOPTS_VALUE)
1954  *cur_ts = av_rescale_q(pkt.pts, tb, AV_TIME_BASE_Q);
1955 
1956  if (!has_start && *cur_ts != AV_NOPTS_VALUE) {
1957  start = *cur_ts;
1958  has_start = 1;
1959  }
1960 
1961  if (has_start && !has_end && interval->end_is_offset) {
1962  end = start + interval->end;
1963  has_end = 1;
1964  }
1965 
1966  if (interval->end_is_offset && interval->duration_frames) {
1967  if (frame_count >= interval->end)
1968  break;
1969  } else if (has_end && *cur_ts != AV_NOPTS_VALUE && *cur_ts >= end) {
1970  break;
1971  }
1972 
1973  frame_count++;
1974  if (do_read_packets) {
1975  if (do_show_packets)
1976  show_packet(w, fmt_ctx, &pkt, i++);
1978  }
1979  if (do_read_frames) {
1980  pkt1 = pkt;
1981  while (pkt1.size && process_frame(w, fmt_ctx, frame, &pkt1) > 0);
1982  }
1983  }
1984  av_free_packet(&pkt);
1985  }
1986  av_init_packet(&pkt);
1987  pkt.data = NULL;
1988  pkt.size = 0;
1989  //Flush remaining frames that are cached in the decoder
1990  for (i = 0; i < fmt_ctx->nb_streams; i++) {
1991  pkt.stream_index = i;
1992  if (do_read_frames)
1993  while (process_frame(w, fmt_ctx, frame, &pkt) > 0);
1994  }
1995 
1996 end:
1997  av_frame_free(&frame);
1998  if (ret < 0) {
1999  av_log(NULL, AV_LOG_ERROR, "Could not read packets in interval ");
2000  log_read_interval(interval, NULL, AV_LOG_ERROR);
2001  }
2002  return ret;
2003 }
2004 
2006 {
2007  int i, ret = 0;
2008  int64_t cur_ts = fmt_ctx->start_time;
2009 
2010  if (read_intervals_nb == 0) {
2011  ReadInterval interval = (ReadInterval) { .has_start = 0, .has_end = 0 };
2012  ret = read_interval_packets(w, fmt_ctx, &interval, &cur_ts);
2013  } else {
2014  for (i = 0; i < read_intervals_nb; i++) {
2015  ret = read_interval_packets(w, fmt_ctx, &read_intervals[i], &cur_ts);
2016  if (ret < 0)
2017  break;
2018  }
2019  }
2020 
2021  return ret;
2022 }
2023 
2024 static int show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_idx, int in_program)
2025 {
2026  AVStream *stream = fmt_ctx->streams[stream_idx];
2028  const AVCodec *dec;
2029  char val_str[128];
2030  const char *s;
2031  AVRational sar, dar;
2032  AVBPrint pbuf;
2033  const AVCodecDescriptor *cd;
2034  int ret = 0;
2035 
2037 
2039 
2040  print_int("index", stream->index);
2041 
2042  if ((dec_ctx = stream->codec)) {
2043  const char *profile = NULL;
2044  dec = dec_ctx->codec;
2045  if (dec) {
2046  print_str("codec_name", dec->name);
2047  if (!do_bitexact) {
2048  if (dec->long_name) print_str ("codec_long_name", dec->long_name);
2049  else print_str_opt("codec_long_name", "unknown");
2050  }
2051  } else if ((cd = avcodec_descriptor_get(stream->codec->codec_id))) {
2052  print_str_opt("codec_name", cd->name);
2053  if (!do_bitexact) {
2054  print_str_opt("codec_long_name",
2055  cd->long_name ? cd->long_name : "unknown");
2056  }
2057  } else {
2058  print_str_opt("codec_name", "unknown");
2059  if (!do_bitexact) {
2060  print_str_opt("codec_long_name", "unknown");
2061  }
2062  }
2063 
2064  if (dec && (profile = av_get_profile_name(dec, dec_ctx->profile)))
2065  print_str("profile", profile);
2066  else
2067  print_str_opt("profile", "unknown");
2068 
2069  s = av_get_media_type_string(dec_ctx->codec_type);
2070  if (s) print_str ("codec_type", s);
2071  else print_str_opt("codec_type", "unknown");
2072  print_q("codec_time_base", dec_ctx->time_base, '/');
2073 
2074  /* print AVI/FourCC tag */
2075  av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
2076  print_str("codec_tag_string", val_str);
2077  print_fmt("codec_tag", "0x%04x", dec_ctx->codec_tag);
2078 
2079  switch (dec_ctx->codec_type) {
2080  case AVMEDIA_TYPE_VIDEO:
2081  print_int("width", dec_ctx->width);
2082  print_int("height", dec_ctx->height);
2083  print_int("has_b_frames", dec_ctx->has_b_frames);
2084  sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, NULL);
2085  if (sar.den) {
2086  print_q("sample_aspect_ratio", sar, ':');
2087  av_reduce(&dar.num, &dar.den,
2088  dec_ctx->width * sar.num,
2089  dec_ctx->height * sar.den,
2090  1024*1024);
2091  print_q("display_aspect_ratio", dar, ':');
2092  } else {
2093  print_str_opt("sample_aspect_ratio", "N/A");
2094  print_str_opt("display_aspect_ratio", "N/A");
2095  }
2096  s = av_get_pix_fmt_name(dec_ctx->pix_fmt);
2097  if (s) print_str ("pix_fmt", s);
2098  else print_str_opt("pix_fmt", "unknown");
2099  print_int("level", dec_ctx->level);
2100  if (dec_ctx->color_range != AVCOL_RANGE_UNSPECIFIED)
2101  print_str ("color_range", dec_ctx->color_range == AVCOL_RANGE_MPEG ? "tv": "pc");
2102  else
2103  print_str_opt("color_range", "N/A");
2104  s = av_get_colorspace_name(dec_ctx->colorspace);
2105  if (s) print_str ("color_space", s);
2106  else print_str_opt("color_space", "unknown");
2107  if (dec_ctx->timecode_frame_start >= 0) {
2108  char tcbuf[AV_TIMECODE_STR_SIZE];
2110  print_str("timecode", tcbuf);
2111  } else {
2112  print_str_opt("timecode", "N/A");
2113  }
2114  break;
2115 
2116  case AVMEDIA_TYPE_AUDIO:
2117  s = av_get_sample_fmt_name(dec_ctx->sample_fmt);
2118  if (s) print_str ("sample_fmt", s);
2119  else print_str_opt("sample_fmt", "unknown");
2120  print_val("sample_rate", dec_ctx->sample_rate, unit_hertz_str);
2121  print_int("channels", dec_ctx->channels);
2122 
2123  if (dec_ctx->channel_layout) {
2124  av_bprint_clear(&pbuf);
2125  av_bprint_channel_layout(&pbuf, dec_ctx->channels, dec_ctx->channel_layout);
2126  print_str ("channel_layout", pbuf.str);
2127  } else {
2128  print_str_opt("channel_layout", "unknown");
2129  }
2130 
2131  print_int("bits_per_sample", av_get_bits_per_sample(dec_ctx->codec_id));
2132  break;
2133 
2134  case AVMEDIA_TYPE_SUBTITLE:
2135  if (dec_ctx->width)
2136  print_int("width", dec_ctx->width);
2137  else
2138  print_str_opt("width", "N/A");
2139  if (dec_ctx->height)
2140  print_int("height", dec_ctx->height);
2141  else
2142  print_str_opt("height", "N/A");
2143  break;
2144  }
2145  } else {
2146  print_str_opt("codec_type", "unknown");
2147  }
2148  if (dec_ctx->codec && dec_ctx->codec->priv_class && show_private_data) {
2149  const AVOption *opt = NULL;
2150  while (opt = av_opt_next(dec_ctx->priv_data,opt)) {
2151  uint8_t *str;
2152  if (opt->flags) continue;
2153  if (av_opt_get(dec_ctx->priv_data, opt->name, 0, &str) >= 0) {
2154  print_str(opt->name, str);
2155  av_free(str);
2156  }
2157  }
2158  }
2159 
2160  if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS) print_fmt ("id", "0x%x", stream->id);
2161  else print_str_opt("id", "N/A");
2162  print_q("r_frame_rate", stream->r_frame_rate, '/');
2163  print_q("avg_frame_rate", stream->avg_frame_rate, '/');
2164  print_q("time_base", stream->time_base, '/');
2165  print_ts ("start_pts", stream->start_time);
2166  print_time("start_time", stream->start_time, &stream->time_base);
2167  print_ts ("duration_ts", stream->duration);
2168  print_time("duration", stream->duration, &stream->time_base);
2169  if (dec_ctx->bit_rate > 0) print_val ("bit_rate", dec_ctx->bit_rate, unit_bit_per_second_str);
2170  else print_str_opt("bit_rate", "N/A");
2171  if (dec_ctx->rc_max_rate > 0) print_val ("max_bit_rate", dec_ctx->rc_max_rate, unit_bit_per_second_str);
2172  else print_str_opt("max_bit_rate", "N/A");
2173  if (stream->nb_frames) print_fmt ("nb_frames", "%"PRId64, stream->nb_frames);
2174  else print_str_opt("nb_frames", "N/A");
2175  if (nb_streams_frames[stream_idx]) print_fmt ("nb_read_frames", "%"PRIu64, nb_streams_frames[stream_idx]);
2176  else print_str_opt("nb_read_frames", "N/A");
2177  if (nb_streams_packets[stream_idx]) print_fmt ("nb_read_packets", "%"PRIu64, nb_streams_packets[stream_idx]);
2178  else print_str_opt("nb_read_packets", "N/A");
2179  if (do_show_data)
2180  writer_print_data(w, "extradata", dec_ctx->extradata,
2181  dec_ctx->extradata_size);
2182  writer_print_data_hash(w, "extradata_hash", dec_ctx->extradata,
2183  dec_ctx->extradata_size);
2184 
2185  /* Print disposition information */
2186 #define PRINT_DISPOSITION(flagname, name) do { \
2187  print_int(name, !!(stream->disposition & AV_DISPOSITION_##flagname)); \
2188  } while (0)
2189 
2192  PRINT_DISPOSITION(DEFAULT, "default");
2193  PRINT_DISPOSITION(DUB, "dub");
2194  PRINT_DISPOSITION(ORIGINAL, "original");
2195  PRINT_DISPOSITION(COMMENT, "comment");
2196  PRINT_DISPOSITION(LYRICS, "lyrics");
2197  PRINT_DISPOSITION(KARAOKE, "karaoke");
2198  PRINT_DISPOSITION(FORCED, "forced");
2199  PRINT_DISPOSITION(HEARING_IMPAIRED, "hearing_impaired");
2200  PRINT_DISPOSITION(VISUAL_IMPAIRED, "visual_impaired");
2201  PRINT_DISPOSITION(CLEAN_EFFECTS, "clean_effects");
2202  PRINT_DISPOSITION(ATTACHED_PIC, "attached_pic");
2204  }
2205 
2206  if (do_show_stream_tags)
2207  ret = show_tags(w, stream->metadata, in_program ? SECTION_ID_PROGRAM_STREAM_TAGS : SECTION_ID_STREAM_TAGS);
2208 
2210  av_bprint_finalize(&pbuf, NULL);
2211  fflush(stdout);
2212 
2213  return ret;
2214 }
2215 
2217 {
2218  int i, ret = 0;
2219 
2221  for (i = 0; i < fmt_ctx->nb_streams; i++)
2222  if (selected_streams[i]) {
2223  ret = show_stream(w, fmt_ctx, i, 0);
2224  if (ret < 0)
2225  break;
2226  }
2228 
2229  return ret;
2230 }
2231 
2233 {
2234  int i, ret = 0;
2235 
2237  print_int("program_id", program->id);
2238  print_int("program_num", program->program_num);
2239  print_int("nb_streams", program->nb_stream_indexes);
2240  print_int("pmt_pid", program->pmt_pid);
2241  print_int("pcr_pid", program->pcr_pid);
2242  print_ts("start_pts", program->start_time);
2243  print_time("start_time", program->start_time, &AV_TIME_BASE_Q);
2244  print_ts("end_pts", program->end_time);
2245  print_time("end_time", program->end_time, &AV_TIME_BASE_Q);
2247  ret = show_tags(w, program->metadata, SECTION_ID_PROGRAM_TAGS);
2248  if (ret < 0)
2249  goto end;
2250 
2252  for (i = 0; i < program->nb_stream_indexes; i++) {
2253  if (selected_streams[program->stream_index[i]]) {
2254  ret = show_stream(w, fmt_ctx, program->stream_index[i], 1);
2255  if (ret < 0)
2256  break;
2257  }
2258  }
2260 
2261 end:
2263  return ret;
2264 }
2265 
2267 {
2268  int i, ret = 0;
2269 
2271  for (i = 0; i < fmt_ctx->nb_programs; i++) {
2272  AVProgram *program = fmt_ctx->programs[i];
2273  if (!program)
2274  continue;
2275  ret = show_program(w, fmt_ctx, program);
2276  if (ret < 0)
2277  break;
2278  }
2280  return ret;
2281 }
2282 
2284 {
2285  int i, ret = 0;
2286 
2288  for (i = 0; i < fmt_ctx->nb_chapters; i++) {
2289  AVChapter *chapter = fmt_ctx->chapters[i];
2290 
2292  print_int("id", chapter->id);
2293  print_q ("time_base", chapter->time_base, '/');
2294  print_int("start", chapter->start);
2295  print_time("start_time", chapter->start, &chapter->time_base);
2296  print_int("end", chapter->end);
2297  print_time("end_time", chapter->end, &chapter->time_base);
2299  ret = show_tags(w, chapter->metadata, SECTION_ID_CHAPTER_TAGS);
2301  }
2303 
2304  return ret;
2305 }
2306 
2308 {
2309  char val_str[128];
2310  int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;
2311  int ret = 0;
2312 
2314  print_str_validate("filename", fmt_ctx->filename);
2315  print_int("nb_streams", fmt_ctx->nb_streams);
2316  print_int("nb_programs", fmt_ctx->nb_programs);
2317  print_str("format_name", fmt_ctx->iformat->name);
2318  if (!do_bitexact) {
2319  if (fmt_ctx->iformat->long_name) print_str ("format_long_name", fmt_ctx->iformat->long_name);
2320  else print_str_opt("format_long_name", "unknown");
2321  }
2322  print_time("start_time", fmt_ctx->start_time, &AV_TIME_BASE_Q);
2323  print_time("duration", fmt_ctx->duration, &AV_TIME_BASE_Q);
2324  if (size >= 0) print_val ("size", size, unit_byte_str);
2325  else print_str_opt("size", "N/A");
2326  if (fmt_ctx->bit_rate > 0) print_val ("bit_rate", fmt_ctx->bit_rate, unit_bit_per_second_str);
2327  else print_str_opt("bit_rate", "N/A");
2328  print_int("probe_score", av_format_get_probe_score(fmt_ctx));
2329  if (do_show_format_tags)
2330  ret = show_tags(w, fmt_ctx->metadata, SECTION_ID_FORMAT_TAGS);
2331 
2333  fflush(stdout);
2334  return ret;
2335 }
2336 
2337 static void show_error(WriterContext *w, int err)
2338 {
2339  char errbuf[128];
2340  const char *errbuf_ptr = errbuf;
2341 
2342  if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
2343  errbuf_ptr = strerror(AVUNERROR(err));
2344 
2346  print_int("code", err);
2347  print_str("string", errbuf_ptr);
2349 }
2350 
2351 static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
2352 {
2353  int err, i, orig_nb_streams;
2354  AVFormatContext *fmt_ctx = NULL;
2355  AVDictionaryEntry *t;
2356  AVDictionary **opts;
2357 
2358  if ((err = avformat_open_input(&fmt_ctx, filename,
2359  iformat, &format_opts)) < 0) {
2360  print_error(filename, err);
2361  return err;
2362  }
2363  if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2364  av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2365  return AVERROR_OPTION_NOT_FOUND;
2366  }
2367 
2368  /* fill the streams in the format context */
2369  opts = setup_find_stream_info_opts(fmt_ctx, codec_opts);
2370  orig_nb_streams = fmt_ctx->nb_streams;
2371 
2372  if ((err = avformat_find_stream_info(fmt_ctx, opts)) < 0) {
2373  print_error(filename, err);
2374  return err;
2375  }
2376  for (i = 0; i < orig_nb_streams; i++)
2377  av_dict_free(&opts[i]);
2378  av_freep(&opts);
2379 
2380  av_dump_format(fmt_ctx, 0, filename, 0);
2381 
2382  /* bind a decoder to each input stream */
2383  for (i = 0; i < fmt_ctx->nb_streams; i++) {
2384  AVStream *stream = fmt_ctx->streams[i];
2385  AVCodec *codec;
2386 
2387  if (stream->codec->codec_id == AV_CODEC_ID_PROBE) {
2388  av_log(NULL, AV_LOG_WARNING,
2389  "Failed to probe codec for input stream %d\n",
2390  stream->index);
2391  } else if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
2392  av_log(NULL, AV_LOG_WARNING,
2393  "Unsupported codec with id %d for input stream %d\n",
2394  stream->codec->codec_id, stream->index);
2395  } else {
2397  fmt_ctx, stream, codec);
2398  if (avcodec_open2(stream->codec, codec, &opts) < 0) {
2399  av_log(NULL, AV_LOG_WARNING, "Could not open codec for input stream %d\n",
2400  stream->index);
2401  }
2402  if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2403  av_log(NULL, AV_LOG_ERROR, "Option %s for input stream %d not found\n",
2404  t->key, stream->index);
2405  return AVERROR_OPTION_NOT_FOUND;
2406  }
2407  }
2408  }
2409 
2410  *fmt_ctx_ptr = fmt_ctx;
2411  return 0;
2412 }
2413 
2414 static void close_input_file(AVFormatContext **ctx_ptr)
2415 {
2416  int i;
2417  AVFormatContext *fmt_ctx = *ctx_ptr;
2418 
2419  /* close decoder for each stream */
2420  for (i = 0; i < fmt_ctx->nb_streams; i++)
2421  if (fmt_ctx->streams[i]->codec->codec_id != AV_CODEC_ID_NONE)
2422  avcodec_close(fmt_ctx->streams[i]->codec);
2423 
2424  avformat_close_input(ctx_ptr);
2425 }
2426 
2427 static int probe_file(WriterContext *wctx, const char *filename)
2428 {
2430  int ret, i;
2431  int section_id;
2432 
2435 
2436  ret = open_input_file(&fmt_ctx, filename);
2437  if (ret < 0)
2438  return ret;
2439 
2440 #define CHECK_END if (ret < 0) goto end
2441 
2442  nb_streams = fmt_ctx->nb_streams;
2446 
2447  for (i = 0; i < fmt_ctx->nb_streams; i++) {
2448  if (stream_specifier) {
2449  ret = avformat_match_stream_specifier(fmt_ctx,
2450  fmt_ctx->streams[i],
2452  CHECK_END;
2453  else
2454  selected_streams[i] = ret;
2455  ret = 0;
2456  } else {
2457  selected_streams[i] = 1;
2458  }
2459  }
2460 
2464  section_id = SECTION_ID_PACKETS_AND_FRAMES;
2465  else if (do_show_packets && !do_show_frames)
2466  section_id = SECTION_ID_PACKETS;
2467  else // (!do_show_packets && do_show_frames)
2468  section_id = SECTION_ID_FRAMES;
2470  writer_print_section_header(wctx, section_id);
2471  ret = read_packets(wctx, fmt_ctx);
2474  CHECK_END;
2475  }
2476 
2477  if (do_show_programs) {
2478  ret = show_programs(wctx, fmt_ctx);
2479  CHECK_END;
2480  }
2481 
2482  if (do_show_streams) {
2483  ret = show_streams(wctx, fmt_ctx);
2484  CHECK_END;
2485  }
2486  if (do_show_chapters) {
2487  ret = show_chapters(wctx, fmt_ctx);
2488  CHECK_END;
2489  }
2490  if (do_show_format) {
2491  ret = show_format(wctx, fmt_ctx);
2492  CHECK_END;
2493  }
2494 
2495 end:
2496  close_input_file(&fmt_ctx);
2500 
2501  return ret;
2502 }
2503 
2504 static void show_usage(void)
2505 {
2506  av_log(NULL, AV_LOG_INFO, "Simple multimedia streams analyzer\n");
2507  av_log(NULL, AV_LOG_INFO, "usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);
2508  av_log(NULL, AV_LOG_INFO, "\n");
2509 }
2510 
2512 {
2513  AVBPrint pbuf;
2515 
2517  print_str("version", FFMPEG_VERSION);
2518  print_fmt("copyright", "Copyright (c) %d-%d the FFmpeg developers",
2519  program_birth_year, CONFIG_THIS_YEAR);
2520  print_str("build_date", __DATE__);
2521  print_str("build_time", __TIME__);
2522  print_str("compiler_ident", CC_IDENT);
2523  print_str("configuration", FFMPEG_CONFIGURATION);
2525 
2526  av_bprint_finalize(&pbuf, NULL);
2527 }
2528 
2529 #define SHOW_LIB_VERSION(libname, LIBNAME) \
2530  do { \
2531  if (CONFIG_##LIBNAME) { \
2532  unsigned int version = libname##_version(); \
2533  writer_print_section_header(w, SECTION_ID_LIBRARY_VERSION); \
2534  print_str("name", "lib" #libname); \
2535  print_int("major", LIB##LIBNAME##_VERSION_MAJOR); \
2536  print_int("minor", LIB##LIBNAME##_VERSION_MINOR); \
2537  print_int("micro", LIB##LIBNAME##_VERSION_MICRO); \
2538  print_int("version", version); \
2539  print_str("ident", LIB##LIBNAME##_IDENT); \
2540  writer_print_section_footer(w); \
2541  } \
2542  } while (0)
2543 
2545 {
2547  SHOW_LIB_VERSION(avutil, AVUTIL);
2548  SHOW_LIB_VERSION(avcodec, AVCODEC);
2549  SHOW_LIB_VERSION(avformat, AVFORMAT);
2550  SHOW_LIB_VERSION(avdevice, AVDEVICE);
2551  SHOW_LIB_VERSION(avfilter, AVFILTER);
2552  SHOW_LIB_VERSION(swscale, SWSCALE);
2553  SHOW_LIB_VERSION(swresample, SWRESAMPLE);
2554  SHOW_LIB_VERSION(postproc, POSTPROC);
2556 }
2557 
2558 static int opt_format(void *optctx, const char *opt, const char *arg)
2559 {
2560  iformat = av_find_input_format(arg);
2561  if (!iformat) {
2562  av_log(NULL, AV_LOG_ERROR, "Unknown input format: %s\n", arg);
2563  return AVERROR(EINVAL);
2564  }
2565  return 0;
2566 }
2567 
2568 static inline void mark_section_show_entries(SectionID section_id,
2569  int show_all_entries, AVDictionary *entries)
2570 {
2571  struct section *section = &sections[section_id];
2572 
2574  if (show_all_entries) {
2575  SectionID *id;
2576  for (id = section->children_ids; *id != -1; id++)
2577  mark_section_show_entries(*id, show_all_entries, entries);
2578  } else {
2579  av_dict_copy(&section->entries_to_show, entries, 0);
2580  }
2581 }
2582 
2583 static int match_section(const char *section_name,
2584  int show_all_entries, AVDictionary *entries)
2585 {
2586  int i, ret = 0;
2587 
2588  for (i = 0; i < FF_ARRAY_ELEMS(sections); i++) {
2589  const struct section *section = &sections[i];
2590  if (!strcmp(section_name, section->name) ||
2591  (section->unique_name && !strcmp(section_name, section->unique_name))) {
2592  av_log(NULL, AV_LOG_DEBUG,
2593  "'%s' matches section with unique name '%s'\n", section_name,
2594  (char *)av_x_if_null(section->unique_name, section->name));
2595  ret++;
2596  mark_section_show_entries(section->id, show_all_entries, entries);
2597  }
2598  }
2599  return ret;
2600 }
2601 
2602 static int opt_show_entries(void *optctx, const char *opt, const char *arg)
2603 {
2604  const char *p = arg;
2605  int ret = 0;
2606 
2607  while (*p) {
2608  AVDictionary *entries = NULL;
2609  char *section_name = av_get_token(&p, "=:");
2610  int show_all_entries = 0;
2611 
2612  if (!section_name) {
2613  av_log(NULL, AV_LOG_ERROR,
2614  "Missing section name for option '%s'\n", opt);
2615  return AVERROR(EINVAL);
2616  }
2617 
2618  if (*p == '=') {
2619  p++;
2620  while (*p && *p != ':') {
2621  char *entry = av_get_token(&p, ",:");
2622  if (!entry)
2623  break;
2624  av_log(NULL, AV_LOG_VERBOSE,
2625  "Adding '%s' to the entries to show in section '%s'\n",
2626  entry, section_name);
2627  av_dict_set(&entries, entry, "", AV_DICT_DONT_STRDUP_KEY);
2628  if (*p == ',')
2629  p++;
2630  }
2631  } else {
2632  show_all_entries = 1;
2633  }
2634 
2635  ret = match_section(section_name, show_all_entries, entries);
2636  if (ret == 0) {
2637  av_log(NULL, AV_LOG_ERROR, "No match for section '%s'\n", section_name);
2638  ret = AVERROR(EINVAL);
2639  }
2640  av_dict_free(&entries);
2641  av_free(section_name);
2642 
2643  if (ret <= 0)
2644  break;
2645  if (*p)
2646  p++;
2647  }
2648 
2649  return ret;
2650 }
2651 
2652 static int opt_show_format_entry(void *optctx, const char *opt, const char *arg)
2653 {
2654  char *buf = av_asprintf("format=%s", arg);
2655  int ret;
2656 
2657  av_log(NULL, AV_LOG_WARNING,
2658  "Option '%s' is deprecated, use '-show_entries format=%s' instead\n",
2659  opt, arg);
2660  ret = opt_show_entries(optctx, opt, buf);
2661  av_free(buf);
2662  return ret;
2663 }
2664 
2665 static void opt_input_file(void *optctx, const char *arg)
2666 {
2667  if (input_filename) {
2668  av_log(NULL, AV_LOG_ERROR,
2669  "Argument '%s' provided as input filename, but '%s' was already specified.\n",
2670  arg, input_filename);
2671  exit_program(1);
2672  }
2673  if (!strcmp(arg, "-"))
2674  arg = "pipe:";
2675  input_filename = arg;
2676 }
2677 
2678 static int opt_input_file_i(void *optctx, const char *opt, const char *arg)
2679 {
2680  opt_input_file(optctx, arg);
2681  return 0;
2682 }
2683 
2684 void show_help_default(const char *opt, const char *arg)
2685 {
2687  show_usage();
2688  show_help_options(options, "Main options:", 0, 0, 0);
2689  printf("\n");
2690 
2692 }
2693 
2694 /**
2695  * Parse interval specification, according to the format:
2696  * INTERVAL ::= [START|+START_OFFSET][%[END|+END_OFFSET]]
2697  * INTERVALS ::= INTERVAL[,INTERVALS]
2698 */
2699 static int parse_read_interval(const char *interval_spec,
2700  ReadInterval *interval)
2701 {
2702  int ret = 0;
2703  char *next, *p, *spec = av_strdup(interval_spec);
2704  if (!spec)
2705  return AVERROR(ENOMEM);
2706 
2707  if (!*spec) {
2708  av_log(NULL, AV_LOG_ERROR, "Invalid empty interval specification\n");
2709  ret = AVERROR(EINVAL);
2710  goto end;
2711  }
2712 
2713  p = spec;
2714  next = strchr(spec, '%');
2715  if (next)
2716  *next++ = 0;
2717 
2718  /* parse first part */
2719  if (*p) {
2720  interval->has_start = 1;
2721 
2722  if (*p == '+') {
2723  interval->start_is_offset = 1;
2724  p++;
2725  } else {
2726  interval->start_is_offset = 0;
2727  }
2728 
2729  ret = av_parse_time(&interval->start, p, 1);
2730  if (ret < 0) {
2731  av_log(NULL, AV_LOG_ERROR, "Invalid interval start specification '%s'\n", p);
2732  goto end;
2733  }
2734  } else {
2735  interval->has_start = 0;
2736  }
2737 
2738  /* parse second part */
2739  p = next;
2740  if (p && *p) {
2741  int64_t us;
2742  interval->has_end = 1;
2743 
2744  if (*p == '+') {
2745  interval->end_is_offset = 1;
2746  p++;
2747  } else {
2748  interval->end_is_offset = 0;
2749  }
2750 
2751  if (interval->end_is_offset && *p == '#') {
2752  long long int lli;
2753  char *tail;
2754  interval->duration_frames = 1;
2755  p++;
2756  lli = strtoll(p, &tail, 10);
2757  if (*tail || lli < 0) {
2758  av_log(NULL, AV_LOG_ERROR,
2759  "Invalid or negative value '%s' for duration number of frames\n", p);
2760  goto end;
2761  }
2762  interval->end = lli;
2763  } else {
2764  ret = av_parse_time(&us, p, 1);
2765  if (ret < 0) {
2766  av_log(NULL, AV_LOG_ERROR, "Invalid interval end/duration specification '%s'\n", p);
2767  goto end;
2768  }
2769  interval->end = us;
2770  }
2771  } else {
2772  interval->has_end = 0;
2773  }
2774 
2775 end:
2776  av_free(spec);
2777  return ret;
2778 }
2779 
2780 static int parse_read_intervals(const char *intervals_spec)
2781 {
2782  int ret, n, i;
2783  char *p, *spec = av_strdup(intervals_spec);
2784  if (!spec)
2785  return AVERROR(ENOMEM);
2786 
2787  /* preparse specification, get number of intervals */
2788  for (n = 0, p = spec; *p; p++)
2789  if (*p == ',')
2790  n++;
2791  n++;
2792 
2793  read_intervals = av_malloc_array(n, sizeof(*read_intervals));
2794  if (!read_intervals) {
2795  ret = AVERROR(ENOMEM);
2796  goto end;
2797  }
2798  read_intervals_nb = n;
2799 
2800  /* parse intervals */
2801  p = spec;
2802  for (i = 0; p; i++) {
2803  char *next;
2804 
2806  next = strchr(p, ',');
2807  if (next)
2808  *next++ = 0;
2809 
2810  read_intervals[i].id = i;
2811  ret = parse_read_interval(p, &read_intervals[i]);
2812  if (ret < 0) {
2813  av_log(NULL, AV_LOG_ERROR, "Error parsing read interval #%d '%s'\n",
2814  i, p);
2815  goto end;
2816  }
2817  av_log(NULL, AV_LOG_VERBOSE, "Parsed log interval ");
2818  log_read_interval(&read_intervals[i], NULL, AV_LOG_VERBOSE);
2819  p = next;
2820  }
2822 
2823 end:
2824  av_free(spec);
2825  return ret;
2826 }
2827 
2828 static int opt_read_intervals(void *optctx, const char *opt, const char *arg)
2829 {
2830  return parse_read_intervals(arg);
2831 }
2832 
2833 static int opt_pretty(void *optctx, const char *opt, const char *arg)
2834 {
2835  show_value_unit = 1;
2836  use_value_prefix = 1;
2839  return 0;
2840 }
2841 
2842 static void print_section(SectionID id, int level)
2843 {
2844  const SectionID *pid;
2845  const struct section *section = &sections[id];
2846  printf("%c%c%c",
2847  section->flags & SECTION_FLAG_IS_WRAPPER ? 'W' : '.',
2848  section->flags & SECTION_FLAG_IS_ARRAY ? 'A' : '.',
2849  section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS ? 'V' : '.');
2850  printf("%*c %s", level * 4, ' ', section->name);
2851  if (section->unique_name)
2852  printf("/%s", section->unique_name);
2853  printf("\n");
2854 
2855  for (pid = section->children_ids; *pid != -1; pid++)
2856  print_section(*pid, level+1);
2857 }
2858 
2859 static int opt_sections(void *optctx, const char *opt, const char *arg)
2860 {
2861  printf("Sections:\n"
2862  "W.. = Section is a wrapper (contains other sections, no local entries)\n"
2863  ".A. = Section contains an array of elements of the same type\n"
2864  "..V = Section may contain a variable number of fields with variable keys\n"
2865  "FLAGS NAME/UNIQUE_NAME\n"
2866  "---\n");
2868  return 0;
2869 }
2870 
2871 static int opt_show_versions(const char *opt, const char *arg)
2872 {
2875  return 0;
2876 }
2877 
2878 #define DEFINE_OPT_SHOW_SECTION(section, target_section_id) \
2879  static int opt_show_##section(const char *opt, const char *arg) \
2880  { \
2881  mark_section_show_entries(SECTION_ID_##target_section_id, 1, NULL); \
2882  return 0; \
2883  }
2884 
2885 DEFINE_OPT_SHOW_SECTION(chapters, CHAPTERS);
2886 DEFINE_OPT_SHOW_SECTION(error, ERROR);
2887 DEFINE_OPT_SHOW_SECTION(format, FORMAT);
2888 DEFINE_OPT_SHOW_SECTION(frames, FRAMES);
2889 DEFINE_OPT_SHOW_SECTION(library_versions, LIBRARY_VERSIONS);
2890 DEFINE_OPT_SHOW_SECTION(packets, PACKETS);
2891 DEFINE_OPT_SHOW_SECTION(program_version, PROGRAM_VERSION);
2892 DEFINE_OPT_SHOW_SECTION(streams, STREAMS);
2893 DEFINE_OPT_SHOW_SECTION(programs, PROGRAMS);
2894 
2895 static const OptionDef real_options[] = {
2896 #include "cmdutils_common_opts.h"
2897  { "f", HAS_ARG, {.func_arg = opt_format}, "force format", "format" },
2898  { "unit", OPT_BOOL, {&show_value_unit}, "show unit of the displayed values" },
2899  { "prefix", OPT_BOOL, {&use_value_prefix}, "use SI prefixes for the displayed values" },
2900  { "byte_binary_prefix", OPT_BOOL, {&use_byte_value_binary_prefix},
2901  "use binary prefixes for byte units" },
2902  { "sexagesimal", OPT_BOOL, {&use_value_sexagesimal_format},
2903  "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
2904  { "pretty", 0, {.func_arg = opt_pretty},
2905  "prettify the format of displayed values, make it more human readable" },
2906  { "print_format", OPT_STRING | HAS_ARG, {(void*)&print_format},
2907  "set the output printing format (available formats are: default, compact, csv, flat, ini, json, xml)", "format" },
2908  { "of", OPT_STRING | HAS_ARG, {(void*)&print_format}, "alias for -print_format", "format" },
2909  { "select_streams", OPT_STRING | HAS_ARG, {(void*)&stream_specifier}, "select the specified streams", "stream_specifier" },
2910  { "sections", OPT_EXIT, {.func_arg = opt_sections}, "print sections structure and section information, and exit" },
2911  { "show_data", OPT_BOOL, {(void*)&do_show_data}, "show packets data" },
2912  { "show_data_hash", OPT_STRING | HAS_ARG, {(void*)&show_data_hash}, "show packets data hash" },
2913  { "show_error", 0, {(void*)&opt_show_error}, "show probing error" },
2914  { "show_format", 0, {(void*)&opt_show_format}, "show format/container info" },
2915  { "show_frames", 0, {(void*)&opt_show_frames}, "show frames info" },
2916  { "show_format_entry", HAS_ARG, {.func_arg = opt_show_format_entry},
2917  "show a particular entry from the format/container info", "entry" },
2918  { "show_entries", HAS_ARG, {.func_arg = opt_show_entries},
2919  "show a set of specified entries", "entry_list" },
2920  { "show_packets", 0, {(void*)&opt_show_packets}, "show packets info" },
2921  { "show_programs", 0, {(void*)&opt_show_programs}, "show programs info" },
2922  { "show_streams", 0, {(void*)&opt_show_streams}, "show streams info" },
2923  { "show_chapters", 0, {(void*)&opt_show_chapters}, "show chapters info" },
2924  { "count_frames", OPT_BOOL, {(void*)&do_count_frames}, "count the number of frames per stream" },
2925  { "count_packets", OPT_BOOL, {(void*)&do_count_packets}, "count the number of packets per stream" },
2926  { "show_program_version", 0, {(void*)&opt_show_program_version}, "show ffprobe version" },
2927  { "show_library_versions", 0, {(void*)&opt_show_library_versions}, "show library versions" },
2928  { "show_versions", 0, {(void*)&opt_show_versions}, "show program and library versions" },
2929  { "show_private_data", OPT_BOOL, {(void*)&show_private_data}, "show private data" },
2930  { "private", OPT_BOOL, {(void*)&show_private_data}, "same as show_private_data" },
2931  { "bitexact", OPT_BOOL, {&do_bitexact}, "force bitexact output" },
2932  { "read_intervals", HAS_ARG, {.func_arg = opt_read_intervals}, "set read intervals", "read_intervals" },
2933  { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {.func_arg = opt_default}, "generic catch all option", "" },
2934  { "i", HAS_ARG, {.func_arg = opt_input_file_i}, "read specified file", "input_file"},
2935  { NULL, },
2936 };
2937 
2938 static inline int check_section_show_entries(int section_id)
2939 {
2940  int *id;
2941  struct section *section = &sections[section_id];
2942  if (sections[section_id].show_all_entries || sections[section_id].entries_to_show)
2943  return 1;
2944  for (id = section->children_ids; *id != -1; id++)
2945  if (check_section_show_entries(*id))
2946  return 1;
2947  return 0;
2948 }
2949 
2950 #define SET_DO_SHOW(id, varname) do { \
2951  if (check_section_show_entries(SECTION_ID_##id)) \
2952  do_show_##varname = 1; \
2953  } while (0)
2954 
2955 int main(int argc, char **argv)
2956 {
2957  const Writer *w;
2958  WriterContext *wctx;
2959  char *buf;
2960  char *w_name = NULL, *w_args = NULL;
2961  int ret, i;
2962 
2965 
2966  options = real_options;
2967  parse_loglevel(argc, argv, options);
2968  av_register_all();
2970  init_opts();
2971 #if CONFIG_AVDEVICE
2973 #endif
2974 
2975  show_banner(argc, argv, options);
2976  parse_options(NULL, argc, argv, options, opt_input_file);
2977 
2978  /* mark things to show, based on -show_entries */
2979  SET_DO_SHOW(CHAPTERS, chapters);
2980  SET_DO_SHOW(ERROR, error);
2981  SET_DO_SHOW(FORMAT, format);
2982  SET_DO_SHOW(FRAMES, frames);
2983  SET_DO_SHOW(LIBRARY_VERSIONS, library_versions);
2984  SET_DO_SHOW(PACKETS, packets);
2985  SET_DO_SHOW(PROGRAM_VERSION, program_version);
2986  SET_DO_SHOW(PROGRAMS, programs);
2987  SET_DO_SHOW(STREAMS, streams);
2988  SET_DO_SHOW(STREAM_DISPOSITION, stream_disposition);
2989  SET_DO_SHOW(PROGRAM_STREAM_DISPOSITION, stream_disposition);
2990 
2991  SET_DO_SHOW(CHAPTER_TAGS, chapter_tags);
2992  SET_DO_SHOW(FORMAT_TAGS, format_tags);
2993  SET_DO_SHOW(FRAME_TAGS, frame_tags);
2994  SET_DO_SHOW(PROGRAM_TAGS, program_tags);
2995  SET_DO_SHOW(STREAM_TAGS, stream_tags);
2996 
2998  av_log(NULL, AV_LOG_ERROR,
2999  "-bitexact and -show_program_version or -show_library_versions "
3000  "options are incompatible\n");
3001  ret = AVERROR(EINVAL);
3002  goto end;
3003  }
3004 
3006 
3007  if (!print_format)
3008  print_format = av_strdup("default");
3009  if (!print_format) {
3010  ret = AVERROR(ENOMEM);
3011  goto end;
3012  }
3013  w_name = av_strtok(print_format, "=", &buf);
3014  w_args = buf;
3015 
3016  if (show_data_hash) {
3017  if ((ret = av_hash_alloc(&hash, show_data_hash)) < 0) {
3018  if (ret == AVERROR(EINVAL)) {
3019  const char *n;
3020  av_log(NULL, AV_LOG_ERROR,
3021  "Unknown hash algorithm '%s'\nKnown algorithms:",
3022  show_data_hash);
3023  for (i = 0; (n = av_hash_names(i)); i++)
3024  av_log(NULL, AV_LOG_ERROR, " %s", n);
3025  av_log(NULL, AV_LOG_ERROR, "\n");
3026  }
3027  goto end;
3028  }
3029  }
3030 
3031  w = writer_get_by_name(w_name);
3032  if (!w) {
3033  av_log(NULL, AV_LOG_ERROR, "Unknown output format with name '%s'\n", w_name);
3034  ret = AVERROR(EINVAL);
3035  goto end;
3036  }
3037 
3038  if ((ret = writer_open(&wctx, w, w_args,
3039  sections, FF_ARRAY_ELEMS(sections))) >= 0) {
3040  if (w == &xml_writer)
3042 
3044 
3049 
3050  if (!input_filename &&
3053  show_usage();
3054  av_log(NULL, AV_LOG_ERROR, "You have to specify one input file.\n");
3055  av_log(NULL, AV_LOG_ERROR, "Use -h to get full help or, even better, run 'man %s'.\n", program_name);
3056  ret = AVERROR(EINVAL);
3057  } else if (input_filename) {
3058  ret = probe_file(wctx, input_filename);
3059  if (ret < 0 && do_show_error)
3060  show_error(wctx, ret);
3061  }
3062 
3064  writer_close(&wctx);
3065  }
3066 
3067 end:
3069  av_freep(&read_intervals);
3070  av_hash_freep(&hash);
3071 
3072  uninit_opts();
3073  for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)
3074  av_dict_free(&(sections[i].entries_to_show));
3075 
3077 
3078  return ret < 0;
3079 }