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FFmpeg/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/display.h"

  37. #include "libavutil/hash.h"

  38. #include "libavutil/opt.h"

  39. #include "libavutil/pixdesc.h"

  40. #include "libavutil/dict.h"

  41. #include "libavutil/intreadwrite.h"

  42. #include "libavutil/libm.h"

  43. #include "libavutil/parseutils.h"

  44. #include "libavutil/timecode.h"

  45. #include "libavutil/timestamp.h"

  46. #include "libavdevice/avdevice.h"

  47. #include "libswscale/swscale.h"

  48. #include "libswresample/swresample.h"

  49. #include "libpostproc/postprocess.h"

  50. #include "cmdutils.h"

  51. 

  52. typedef struct InputStream {

  53.     AVStream *st;

  54. } InputStream;

  55. 

  56. typedef struct InputFile {

  57.     AVFormatContext *fmt_ctx;

  58. 

  59.     InputStream *streams;

  60.     int       nb_streams;

  61. } InputFile;

  62. 

  63. const char program_name[] = "ffprobe";

  64. const int program_birth_year = 2007;

  65. 

  66. static int do_bitexact = 0;

  67. static int do_count_frames = 0;

  68. static int do_count_packets = 0;

  69. static int do_read_frames  = 0;

  70. static int do_read_packets = 0;

  71. static int do_show_chapters = 0;

  72. static int do_show_error   = 0;

  73. static int do_show_format  = 0;

  74. static int do_show_frames  = 0;

  75. static int do_show_packets = 0;

  76. static int do_show_programs = 0;

  77. static int do_show_streams = 0;

  78. static int do_show_stream_disposition = 0;

  79. static int do_show_data    = 0;

  80. static int do_show_program_version  = 0;

  81. static int do_show_library_versions = 0;

  82. static int do_show_pixel_formats = 0;

  83. static int do_show_pixel_format_flags = 0;

  84. static int do_show_pixel_format_components = 0;

  85. 

  86. static int do_show_chapter_tags = 0;

  87. static int do_show_format_tags = 0;

  88. static int do_show_frame_tags = 0;

  89. static int do_show_program_tags = 0;

  90. static int do_show_stream_tags = 0;

  91. static int do_show_packet_tags = 0;

  92. 

  93. static int show_value_unit              = 0;

  94. static int use_value_prefix             = 0;

  95. static int use_byte_value_binary_prefix = 0;

  96. static int use_value_sexagesimal_format = 0;

  97. static int show_private_data            = 1;

  98. 

  99. static char *print_format;

  100. static char *stream_specifier;

  101. static char *show_data_hash;

  102. 

  103. typedef struct ReadInterval {

  104.     int id;             ///< identifier

  105.     int64_t start, end; ///< start, end in second/AV_TIME_BASE units

  106.     int has_start, has_end;

  107.     int start_is_offset, end_is_offset;

  108.     int duration_frames;

  109. } ReadInterval;

  110. 

  111. static ReadInterval *read_intervals;

  112. static int read_intervals_nb = 0;

  113. 

  114. /* section structure definition */

  115. 

  116. #define SECTION_MAX_NB_CHILDREN 10

  117. 

  118. struct section {

  119.     int id;             ///< unique id identifying a section

  120.     const char *name;

  121. 

  122. #define SECTION_FLAG_IS_WRAPPER      1 ///< the section only contains other sections, but has no data at its own level

  123. #define SECTION_FLAG_IS_ARRAY        2 ///< the section contains an array of elements of the same type

  124. #define SECTION_FLAG_HAS_VARIABLE_FIELDS 4 ///< the section may contain a variable number of fields with variable keys.

  125.                                            ///  For these sections the element_name field is mandatory.

  126.     int flags;

  127.     int children_ids[SECTION_MAX_NB_CHILDREN+1]; ///< list of children section IDS, terminated by -1

  128.     const char *element_name; ///< name of the contained element, if provided

  129.     const char *unique_name;  ///< unique section name, in case the name is ambiguous

  130.     AVDictionary *entries_to_show;

  131.     int show_all_entries;

  132. };

  133. 

  134. typedef enum {

  135.     SECTION_ID_NONE = -1,

  136.     SECTION_ID_CHAPTER,

  137.     SECTION_ID_CHAPTER_TAGS,

  138.     SECTION_ID_CHAPTERS,

  139.     SECTION_ID_ERROR,

  140.     SECTION_ID_FORMAT,

  141.     SECTION_ID_FORMAT_TAGS,

  142.     SECTION_ID_FRAME,

  143.     SECTION_ID_FRAMES,

  144.     SECTION_ID_FRAME_TAGS,

  145.     SECTION_ID_FRAME_SIDE_DATA_LIST,

  146.     SECTION_ID_FRAME_SIDE_DATA,

  147.     SECTION_ID_LIBRARY_VERSION,

  148.     SECTION_ID_LIBRARY_VERSIONS,

  149.     SECTION_ID_PACKET,

  150.     SECTION_ID_PACKET_TAGS,

  151.     SECTION_ID_PACKETS,

  152.     SECTION_ID_PACKETS_AND_FRAMES,

  153.     SECTION_ID_PACKET_SIDE_DATA_LIST,

  154.     SECTION_ID_PACKET_SIDE_DATA,

  155.     SECTION_ID_PIXEL_FORMAT,

  156.     SECTION_ID_PIXEL_FORMAT_FLAGS,

  157.     SECTION_ID_PIXEL_FORMAT_COMPONENT,

  158.     SECTION_ID_PIXEL_FORMAT_COMPONENTS,

  159.     SECTION_ID_PIXEL_FORMATS,

  160.     SECTION_ID_PROGRAM_STREAM_DISPOSITION,

  161.     SECTION_ID_PROGRAM_STREAM_TAGS,

  162.     SECTION_ID_PROGRAM,

  163.     SECTION_ID_PROGRAM_STREAMS,

  164.     SECTION_ID_PROGRAM_STREAM,

  165.     SECTION_ID_PROGRAM_TAGS,

  166.     SECTION_ID_PROGRAM_VERSION,

  167.     SECTION_ID_PROGRAMS,

  168.     SECTION_ID_ROOT,

  169.     SECTION_ID_STREAM,

  170.     SECTION_ID_STREAM_DISPOSITION,

  171.     SECTION_ID_STREAMS,

  172.     SECTION_ID_STREAM_TAGS,

  173.     SECTION_ID_STREAM_SIDE_DATA_LIST,

  174.     SECTION_ID_STREAM_SIDE_DATA,

  175.     SECTION_ID_SUBTITLE,

  176. } SectionID;

  177. 

  178. static struct section sections[] = {

  179.     [SECTION_ID_CHAPTERS] =           { SECTION_ID_CHAPTERS, "chapters", SECTION_FLAG_IS_ARRAY, { SECTION_ID_CHAPTER, -1 } },

  180.     [SECTION_ID_CHAPTER] =            { SECTION_ID_CHAPTER, "chapter", 0, { SECTION_ID_CHAPTER_TAGS, -1 } },

  181.     [SECTION_ID_CHAPTER_TAGS] =       { SECTION_ID_CHAPTER_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "chapter_tags" },

  182.     [SECTION_ID_ERROR] =              { SECTION_ID_ERROR, "error", 0, { -1 } },

  183.     [SECTION_ID_FORMAT] =             { SECTION_ID_FORMAT, "format", 0, { SECTION_ID_FORMAT_TAGS, -1 } },

  184.     [SECTION_ID_FORMAT_TAGS] =        { SECTION_ID_FORMAT_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "format_tags" },

  185.     [SECTION_ID_FRAMES] =             { SECTION_ID_FRAMES, "frames", SECTION_FLAG_IS_ARRAY, { SECTION_ID_FRAME, SECTION_ID_SUBTITLE, -1 } },

  186.     [SECTION_ID_FRAME] =              { SECTION_ID_FRAME, "frame", 0, { SECTION_ID_FRAME_TAGS, SECTION_ID_FRAME_SIDE_DATA_LIST, -1 } },

  187.     [SECTION_ID_FRAME_TAGS] =         { SECTION_ID_FRAME_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "frame_tags" },

  188.     [SECTION_ID_FRAME_SIDE_DATA_LIST] ={ SECTION_ID_FRAME_SIDE_DATA_LIST, "side_data_list", SECTION_FLAG_IS_ARRAY, { SECTION_ID_FRAME_SIDE_DATA, -1 } },

  189.     [SECTION_ID_FRAME_SIDE_DATA] =     { SECTION_ID_FRAME_SIDE_DATA, "side_data", 0, { -1 } },

  190.     [SECTION_ID_LIBRARY_VERSIONS] =   { SECTION_ID_LIBRARY_VERSIONS, "library_versions", SECTION_FLAG_IS_ARRAY, { SECTION_ID_LIBRARY_VERSION, -1 } },

  191.     [SECTION_ID_LIBRARY_VERSION] =    { SECTION_ID_LIBRARY_VERSION, "library_version", 0, { -1 } },

  192.     [SECTION_ID_PACKETS] =            { SECTION_ID_PACKETS, "packets", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PACKET, -1} },

  193.     [SECTION_ID_PACKETS_AND_FRAMES] = { SECTION_ID_PACKETS_AND_FRAMES, "packets_and_frames", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PACKET, -1} },

  194.     [SECTION_ID_PACKET] =             { SECTION_ID_PACKET, "packet", 0, { SECTION_ID_PACKET_TAGS, SECTION_ID_PACKET_SIDE_DATA_LIST, -1 } },

  195.     [SECTION_ID_PACKET_TAGS] =        { SECTION_ID_PACKET_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "packet_tags" },

  196.     [SECTION_ID_PACKET_SIDE_DATA_LIST] ={ SECTION_ID_PACKET_SIDE_DATA_LIST, "side_data_list", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PACKET_SIDE_DATA, -1 } },

  197.     [SECTION_ID_PACKET_SIDE_DATA] =     { SECTION_ID_PACKET_SIDE_DATA, "side_data", 0, { -1 } },

  198.     [SECTION_ID_PIXEL_FORMATS] =      { SECTION_ID_PIXEL_FORMATS, "pixel_formats", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PIXEL_FORMAT, -1 } },

  199.     [SECTION_ID_PIXEL_FORMAT] =       { SECTION_ID_PIXEL_FORMAT, "pixel_format", 0, { SECTION_ID_PIXEL_FORMAT_FLAGS, SECTION_ID_PIXEL_FORMAT_COMPONENTS, -1 } },

  200.     [SECTION_ID_PIXEL_FORMAT_FLAGS] = { SECTION_ID_PIXEL_FORMAT_FLAGS, "flags", 0, { -1 }, .unique_name = "pixel_format_flags" },

  201.     [SECTION_ID_PIXEL_FORMAT_COMPONENTS] = { SECTION_ID_PIXEL_FORMAT_COMPONENTS, "components", SECTION_FLAG_IS_ARRAY, {SECTION_ID_PIXEL_FORMAT_COMPONENT, -1 }, .unique_name = "pixel_format_components" },

  202.     [SECTION_ID_PIXEL_FORMAT_COMPONENT]  = { SECTION_ID_PIXEL_FORMAT_COMPONENT, "component", 0, { -1 } },

  203.     [SECTION_ID_PROGRAM_STREAM_DISPOSITION] = { SECTION_ID_PROGRAM_STREAM_DISPOSITION, "disposition", 0, { -1 }, .unique_name = "program_stream_disposition" },

  204.     [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" },

  205.     [SECTION_ID_PROGRAM] =                    { SECTION_ID_PROGRAM, "program", 0, { SECTION_ID_PROGRAM_TAGS, SECTION_ID_PROGRAM_STREAMS, -1 } },

  206.     [SECTION_ID_PROGRAM_STREAMS] =            { SECTION_ID_PROGRAM_STREAMS, "streams", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PROGRAM_STREAM, -1 }, .unique_name = "program_streams" },

  207.     [SECTION_ID_PROGRAM_STREAM] =             { SECTION_ID_PROGRAM_STREAM, "stream", 0, { SECTION_ID_PROGRAM_STREAM_DISPOSITION, SECTION_ID_PROGRAM_STREAM_TAGS, -1 }, .unique_name = "program_stream" },

  208.     [SECTION_ID_PROGRAM_TAGS] =               { SECTION_ID_PROGRAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "program_tags" },

  209.     [SECTION_ID_PROGRAM_VERSION] =    { SECTION_ID_PROGRAM_VERSION, "program_version", 0, { -1 } },

  210.     [SECTION_ID_PROGRAMS] =                   { SECTION_ID_PROGRAMS, "programs", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PROGRAM, -1 } },

  211.     [SECTION_ID_ROOT] =               { SECTION_ID_ROOT, "root", SECTION_FLAG_IS_WRAPPER,

  212.                                         { SECTION_ID_CHAPTERS, SECTION_ID_FORMAT, SECTION_ID_FRAMES, SECTION_ID_PROGRAMS, SECTION_ID_STREAMS,

  213.                                           SECTION_ID_PACKETS, SECTION_ID_ERROR, SECTION_ID_PROGRAM_VERSION, SECTION_ID_LIBRARY_VERSIONS,

  214.                                           SECTION_ID_PIXEL_FORMATS, -1} },

  215.     [SECTION_ID_STREAMS] =            { SECTION_ID_STREAMS, "streams", SECTION_FLAG_IS_ARRAY, { SECTION_ID_STREAM, -1 } },

  216.     [SECTION_ID_STREAM] =             { SECTION_ID_STREAM, "stream", 0, { SECTION_ID_STREAM_DISPOSITION, SECTION_ID_STREAM_TAGS, SECTION_ID_STREAM_SIDE_DATA_LIST, -1 } },

  217.     [SECTION_ID_STREAM_DISPOSITION] = { SECTION_ID_STREAM_DISPOSITION, "disposition", 0, { -1 }, .unique_name = "stream_disposition" },

  218.     [SECTION_ID_STREAM_TAGS] =        { SECTION_ID_STREAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "stream_tags" },

  219.     [SECTION_ID_STREAM_SIDE_DATA_LIST] ={ SECTION_ID_STREAM_SIDE_DATA_LIST, "side_data_list", SECTION_FLAG_IS_ARRAY, { SECTION_ID_STREAM_SIDE_DATA, -1 } },

  220.     [SECTION_ID_STREAM_SIDE_DATA] =     { SECTION_ID_STREAM_SIDE_DATA, "side_data", 0, { -1 } },

  221.     [SECTION_ID_SUBTITLE] =           { SECTION_ID_SUBTITLE, "subtitle", 0, { -1 } },

  222. };

  223. 

  224. static const OptionDef *options;

  225. 

  226. /* FFprobe context */

  227. static const char *input_filename;

  228. static AVInputFormat *iformat = NULL;

  229. 

  230. static struct AVHashContext *hash;

  231. 

  232. static const struct {

  233.     double bin_val;

  234.     double dec_val;

  235.     const char *bin_str;

  236.     const char *dec_str;

  237. } si_prefixes[] = {

  238.     { 1.0, 1.0, "", "" },

  239.     { 1.024e3, 1e3, "Ki", "K" },

  240.     { 1.048576e6, 1e6, "Mi", "M" },

  241.     { 1.073741824e9, 1e9, "Gi", "G" },

  242.     { 1.099511627776e12, 1e12, "Ti", "T" },

  243.     { 1.125899906842624e15, 1e15, "Pi", "P" },

  244. };

  245. 

  246. static const char unit_second_str[]         = "s"    ;

  247. static const char unit_hertz_str[]          = "Hz"   ;

  248. static const char unit_byte_str[]           = "byte" ;

  249. static const char unit_bit_per_second_str[] = "bit/s";

  250. 

  251. static int nb_streams;

  252. static uint64_t *nb_streams_packets;

  253. static uint64_t *nb_streams_frames;

  254. static int *selected_streams;

  255. 

  256. static void ffprobe_cleanup(int ret)

  257. {

  258.     int i;

  259.     for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)

  260.         av_dict_free(&(sections[i].entries_to_show));

  261. }

  262. 

  263. struct unit_value {

  264.     union { double d; long long int i; } val;

  265.     const char *unit;

  266. };

  267. 

  268. static char *value_string(char *buf, int buf_size, struct unit_value uv)

  269. {

  270.     double vald;

  271.     long long int vali;

  272.     int show_float = 0;

  273. 

  274.     if (uv.unit == unit_second_str) {

  275.         vald = uv.val.d;

  276.         show_float = 1;

  277.     } else {

  278.         vald = vali = uv.val.i;

  279.     }

  280. 

  281.     if (uv.unit == unit_second_str && use_value_sexagesimal_format) {

  282.         double secs;

  283.         int hours, mins;

  284.         secs  = vald;

  285.         mins  = (int)secs / 60;

  286.         secs  = secs - mins * 60;

  287.         hours = mins / 60;

  288.         mins %= 60;

  289.         snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);

  290.     } else {

  291.         const char *prefix_string = "";

  292. 

  293.         if (use_value_prefix && vald > 1) {

  294.             long long int index;

  295. 

  296.             if (uv.unit == unit_byte_str && use_byte_value_binary_prefix) {

  297.                 index = (long long int) (log2(vald)) / 10;

  298.                 index = av_clip(index, 0, FF_ARRAY_ELEMS(si_prefixes) - 1);

  299.                 vald /= si_prefixes[index].bin_val;

  300.                 prefix_string = si_prefixes[index].bin_str;

  301.             } else {

  302.                 index = (long long int) (log10(vald)) / 3;

  303.                 index = av_clip(index, 0, FF_ARRAY_ELEMS(si_prefixes) - 1);

  304.                 vald /= si_prefixes[index].dec_val;

  305.                 prefix_string = si_prefixes[index].dec_str;

  306.             }

  307.             vali = vald;

  308.         }

  309. 

  310.         if (show_float || (use_value_prefix && vald != (long long int)vald))

  311.             snprintf(buf, buf_size, "%f", vald);

  312.         else

  313.             snprintf(buf, buf_size, "%lld", vali);

  314.         av_strlcatf(buf, buf_size, "%s%s%s", *prefix_string || show_value_unit ? " " : "",

  315.                  prefix_string, show_value_unit ? uv.unit : "");

  316.     }

  317. 

  318.     return buf;

  319. }

  320. 

  321. /* WRITERS API */

  322. 

  323. typedef struct WriterContext WriterContext;

  324. 

  325. #define WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS 1

  326. #define WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER 2

  327. 

  328. typedef enum {

  329.     WRITER_STRING_VALIDATION_FAIL,

  330.     WRITER_STRING_VALIDATION_REPLACE,

  331.     WRITER_STRING_VALIDATION_IGNORE,

  332.     WRITER_STRING_VALIDATION_NB

  333. } StringValidation;

  334. 

  335. typedef struct Writer {

  336.     const AVClass *priv_class;      ///< private class of the writer, if any

  337.     int priv_size;                  ///< private size for the writer context

  338.     const char *name;

  339. 

  340.     int  (*init)  (WriterContext *wctx);

  341.     void (*uninit)(WriterContext *wctx);

  342. 

  343.     void (*print_section_header)(WriterContext *wctx);

  344.     void (*print_section_footer)(WriterContext *wctx);

  345.     void (*print_integer)       (WriterContext *wctx, const char *, long long int);

  346.     void (*print_rational)      (WriterContext *wctx, AVRational *q, char *sep);

  347.     void (*print_string)        (WriterContext *wctx, const char *, const char *);

  348.     int flags;                  ///< a combination or WRITER_FLAG_*

  349. } Writer;

  350. 

  351. #define SECTION_MAX_NB_LEVELS 10

  352. 

  353. struct WriterContext {

  354.     const AVClass *class;           ///< class of the writer

  355.     const Writer *writer;           ///< the Writer of which this is an instance

  356.     char *name;                     ///< name of this writer instance

  357.     void *priv;                     ///< private data for use by the filter

  358. 

  359.     const struct section *sections; ///< array containing all sections

  360.     int nb_sections;                ///< number of sections

  361. 

  362.     int level;                      ///< current level, starting from 0

  363. 

  364.     /** number of the item printed in the given section, starting from 0 */

  365.     unsigned int nb_item[SECTION_MAX_NB_LEVELS];

  366. 

  367.     /** section per each level */

  368.     const struct section *section[SECTION_MAX_NB_LEVELS];

  369.     AVBPrint section_pbuf[SECTION_MAX_NB_LEVELS]; ///< generic print buffer dedicated to each section,

  370.                                                   ///  used by various writers

  371. 

  372.     unsigned int nb_section_packet; ///< number of the packet section in case we are in "packets_and_frames" section

  373.     unsigned int nb_section_frame;  ///< number of the frame  section in case we are in "packets_and_frames" section

  374.     unsigned int nb_section_packet_frame; ///< nb_section_packet or nb_section_frame according if is_packets_and_frames

  375. 

  376.     int string_validation;

  377.     char *string_validation_replacement;

  378.     unsigned int string_validation_utf8_flags;

  379. };

  380. 

  381. static const char *writer_get_name(void *p)

  382. {

  383.     WriterContext *wctx = p;

  384.     return wctx->writer->name;

  385. }

  386. 

  387. #define OFFSET(x) offsetof(WriterContext, x)

  388. 

  389. static const AVOption writer_options[] = {

  390.     { "string_validation", "set string validation mode",

  391.       OFFSET(string_validation), AV_OPT_TYPE_INT, {.i64=WRITER_STRING_VALIDATION_REPLACE}, 0, WRITER_STRING_VALIDATION_NB-1, .unit = "sv" },

  392.     { "sv", "set string validation mode",

  393.       OFFSET(string_validation), AV_OPT_TYPE_INT, {.i64=WRITER_STRING_VALIDATION_REPLACE}, 0, WRITER_STRING_VALIDATION_NB-1, .unit = "sv" },

  394.     { "ignore",  NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_IGNORE},  .unit = "sv" },

  395.     { "replace", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_REPLACE}, .unit = "sv" },

  396.     { "fail",    NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_FAIL},    .unit = "sv" },

  397.     { "string_validation_replacement", "set string validation replacement string", OFFSET(string_validation_replacement), AV_OPT_TYPE_STRING, {.str=""}},

  398.     { "svr", "set string validation replacement string", OFFSET(string_validation_replacement), AV_OPT_TYPE_STRING, {.str="\xEF\xBF\xBD"}},

  399.     { NULL }

  400. };

  401. 

  402. static void *writer_child_next(void *obj, void *prev)

  403. {

  404.     WriterContext *ctx = obj;

  405.     if (!prev && ctx->writer && ctx->writer->priv_class && ctx->priv)

  406.         return ctx->priv;

  407.     return NULL;

  408. }

  409. 

  410. static const AVClass writer_class = {

  411.     .class_name = "Writer",

  412.     .item_name  = writer_get_name,

  413.     .option     = writer_options,

  414.     .version    = LIBAVUTIL_VERSION_INT,

  415.     .child_next = writer_child_next,

  416. };

  417. 

  418. static void writer_close(WriterContext **wctx)

  419. {

  420.     int i;

  421. 

  422.     if (!*wctx)

  423.         return;

  424. 

  425.     if ((*wctx)->writer->uninit)

  426.         (*wctx)->writer->uninit(*wctx);

  427.     for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)

  428.         av_bprint_finalize(&(*wctx)->section_pbuf[i], NULL);

  429.     if ((*wctx)->writer->priv_class)

  430.         av_opt_free((*wctx)->priv);

  431.     av_freep(&((*wctx)->priv));

  432.     av_opt_free(*wctx);

  433.     av_freep(wctx);

  434. }

  435. 

  436. static void bprint_bytes(AVBPrint *bp, const uint8_t *ubuf, size_t ubuf_size)

  437. {

  438.     int i;

  439.     av_bprintf(bp, "0X");

  440.     for (i = 0; i < ubuf_size; i++)

  441.         av_bprintf(bp, "%02X", ubuf[i]);

  442. }

  443. 

  444. 

  445. static int writer_open(WriterContext **wctx, const Writer *writer, const char *args,

  446.                        const struct section *sections, int nb_sections)

  447. {

  448.     int i, ret = 0;

  449. 

  450.     if (!(*wctx = av_mallocz(sizeof(WriterContext)))) {

  451.         ret = AVERROR(ENOMEM);

  452.         goto fail;

  453.     }

  454. 

  455.     if (!((*wctx)->priv = av_mallocz(writer->priv_size))) {

  456.         ret = AVERROR(ENOMEM);

  457.         goto fail;

  458.     }

  459. 

  460.     (*wctx)->class = &writer_class;

  461.     (*wctx)->writer = writer;

  462.     (*wctx)->level = -1;

  463.     (*wctx)->sections = sections;

  464.     (*wctx)->nb_sections = nb_sections;

  465. 

  466.     av_opt_set_defaults(*wctx);

  467. 

  468.     if (writer->priv_class) {

  469.         void *priv_ctx = (*wctx)->priv;

  470.         *((const AVClass **)priv_ctx) = writer->priv_class;

  471.         av_opt_set_defaults(priv_ctx);

  472.     }

  473. 

  474.     /* convert options to dictionary */

  475.     if (args) {

  476.         AVDictionary *opts = NULL;

  477.         AVDictionaryEntry *opt = NULL;

  478. 

  479.         if ((ret = av_dict_parse_string(&opts, args, "=", ":", 0)) < 0) {

  480.             av_log(*wctx, AV_LOG_ERROR, "Failed to parse option string '%s' provided to writer context\n", args);

  481.             av_dict_free(&opts);

  482.             goto fail;

  483.         }

  484. 

  485.         while ((opt = av_dict_get(opts, "", opt, AV_DICT_IGNORE_SUFFIX))) {

  486.             if ((ret = av_opt_set(*wctx, opt->key, opt->value, AV_OPT_SEARCH_CHILDREN)) < 0) {

  487.                 av_log(*wctx, AV_LOG_ERROR, "Failed to set option '%s' with value '%s' provided to writer context\n",

  488.                        opt->key, opt->value);

  489.                 av_dict_free(&opts);

  490.                 goto fail;

  491.             }

  492.         }

  493. 

  494.         av_dict_free(&opts);

  495.     }

  496. 

  497.     /* validate replace string */

  498.     {

  499.         const uint8_t *p = (*wctx)->string_validation_replacement;

  500.         const uint8_t *endp = p + strlen(p);

  501.         while (*p) {

  502.             const uint8_t *p0 = p;

  503.             int32_t code;

  504.             ret = av_utf8_decode(&code, &p, endp, (*wctx)->string_validation_utf8_flags);

  505.             if (ret < 0) {

  506.                 AVBPrint bp;

  507.                 av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC);

  508.                 bprint_bytes(&bp, p0, p-p0),

  509.                     av_log(wctx, AV_LOG_ERROR,

  510.                            "Invalid UTF8 sequence %s found in string validation replace '%s'\n",

  511.                            bp.str, (*wctx)->string_validation_replacement);

  512.                 return ret;

  513.             }

  514.         }

  515.     }

  516. 

  517.     for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)

  518.         av_bprint_init(&(*wctx)->section_pbuf[i], 1, AV_BPRINT_SIZE_UNLIMITED);

  519. 

  520.     if ((*wctx)->writer->init)

  521.         ret = (*wctx)->writer->init(*wctx);

  522.     if (ret < 0)

  523.         goto fail;

  524. 

  525.     return 0;

  526. 

  527. fail:

  528.     writer_close(wctx);

  529.     return ret;

  530. }

  531. 

  532. static inline void writer_print_section_header(WriterContext *wctx,

  533.                                                int section_id)

  534. {

  535.     int parent_section_id;

  536.     wctx->level++;

  537.     av_assert0(wctx->level < SECTION_MAX_NB_LEVELS);

  538.     parent_section_id = wctx->level ?

  539.         (wctx->section[wctx->level-1])->id : SECTION_ID_NONE;

  540. 

  541.     wctx->nb_item[wctx->level] = 0;

  542.     wctx->section[wctx->level] = &wctx->sections[section_id];

  543. 

  544.     if (section_id == SECTION_ID_PACKETS_AND_FRAMES) {

  545.         wctx->nb_section_packet = wctx->nb_section_frame =

  546.         wctx->nb_section_packet_frame = 0;

  547.     } else if (parent_section_id == SECTION_ID_PACKETS_AND_FRAMES) {

  548.         wctx->nb_section_packet_frame = section_id == SECTION_ID_PACKET ?

  549.             wctx->nb_section_packet : wctx->nb_section_frame;

  550.     }

  551. 

  552.     if (wctx->writer->print_section_header)

  553.         wctx->writer->print_section_header(wctx);

  554. }

  555. 

  556. static inline void writer_print_section_footer(WriterContext *wctx)

  557. {

  558.     int section_id = wctx->section[wctx->level]->id;

  559.     int parent_section_id = wctx->level ?

  560.         wctx->section[wctx->level-1]->id : SECTION_ID_NONE;

  561. 

  562.     if (parent_section_id != SECTION_ID_NONE)

  563.         wctx->nb_item[wctx->level-1]++;

  564.     if (parent_section_id == SECTION_ID_PACKETS_AND_FRAMES) {

  565.         if (section_id == SECTION_ID_PACKET) wctx->nb_section_packet++;

  566.         else                                     wctx->nb_section_frame++;

  567.     }

  568.     if (wctx->writer->print_section_footer)

  569.         wctx->writer->print_section_footer(wctx);

  570.     wctx->level--;

  571. }

  572. 

  573. static inline void writer_print_integer(WriterContext *wctx,

  574.                                         const char *key, long long int val)

  575. {

  576.     const struct section *section = wctx->section[wctx->level];

  577. 

  578.     if (section->show_all_entries || av_dict_get(section->entries_to_show, key, NULL, 0)) {

  579.         wctx->writer->print_integer(wctx, key, val);

  580.         wctx->nb_item[wctx->level]++;

  581.     }

  582. }

  583. 

  584. static inline int validate_string(WriterContext *wctx, char **dstp, const char *src)

  585. {

  586.     const uint8_t *p, *endp;

  587.     AVBPrint dstbuf;

  588.     int invalid_chars_nb = 0, ret = 0;

  589. 

  590.     av_bprint_init(&dstbuf, 0, AV_BPRINT_SIZE_UNLIMITED);

  591. 

  592.     endp = src + strlen(src);

  593.     for (p = (uint8_t *)src; *p;) {

  594.         uint32_t code;

  595.         int invalid = 0;

  596.         const uint8_t *p0 = p;

  597. 

  598.         if (av_utf8_decode(&code, &p, endp, wctx->string_validation_utf8_flags) < 0) {

  599.             AVBPrint bp;

  600.             av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC);

  601.             bprint_bytes(&bp, p0, p-p0);

  602.             av_log(wctx, AV_LOG_DEBUG,

  603.                    "Invalid UTF-8 sequence %s found in string '%s'\n", bp.str, src);

  604.             invalid = 1;

  605.         }

  606. 

  607.         if (invalid) {

  608.             invalid_chars_nb++;

  609. 

  610.             switch (wctx->string_validation) {

  611.             case WRITER_STRING_VALIDATION_FAIL:

  612.                 av_log(wctx, AV_LOG_ERROR,

  613.                        "Invalid UTF-8 sequence found in string '%s'\n", src);

  614.                 ret = AVERROR_INVALIDDATA;

  615.                 goto end;

  616.                 break;

  617. 

  618.             case WRITER_STRING_VALIDATION_REPLACE:

  619.                 av_bprintf(&dstbuf, "%s", wctx->string_validation_replacement);

  620.                 break;

  621.             }

  622.         }

  623. 

  624.         if (!invalid || wctx->string_validation == WRITER_STRING_VALIDATION_IGNORE)

  625.             av_bprint_append_data(&dstbuf, p0, p-p0);

  626.     }

  627. 

  628.     if (invalid_chars_nb && wctx->string_validation == WRITER_STRING_VALIDATION_REPLACE) {

  629.         av_log(wctx, AV_LOG_WARNING,

  630.                "%d invalid UTF-8 sequence(s) found in string '%s', replaced with '%s'\n",

  631.                invalid_chars_nb, src, wctx->string_validation_replacement);

  632.     }

  633. 

  634. end:

  635.     av_bprint_finalize(&dstbuf, dstp);

  636.     return ret;

  637. }

  638. 

  639. #define PRINT_STRING_OPT      1

  640. #define PRINT_STRING_VALIDATE 2

  641. 

  642. static inline int writer_print_string(WriterContext *wctx,

  643.                                       const char *key, const char *val, int flags)

  644. {

  645.     const struct section *section = wctx->section[wctx->level];

  646.     int ret = 0;

  647. 

  648.     if ((flags & PRINT_STRING_OPT)

  649.         && !(wctx->writer->flags & WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS))

  650.         return 0;

  651. 

  652.     if (section->show_all_entries || av_dict_get(section->entries_to_show, key, NULL, 0)) {

  653.         if (flags & PRINT_STRING_VALIDATE) {

  654.             char *key1 = NULL, *val1 = NULL;

  655.             ret = validate_string(wctx, &key1, key);

  656.             if (ret < 0) goto end;

  657.             ret = validate_string(wctx, &val1, val);

  658.             if (ret < 0) goto end;

  659.             wctx->writer->print_string(wctx, key1, val1);

  660.         end:

  661.             if (ret < 0) {

  662.                 av_log(wctx, AV_LOG_ERROR,

  663.                        "Invalid key=value string combination %s=%s in section %s\n",

  664.                        key, val, section->unique_name);

  665.             }

  666.             av_free(key1);

  667.             av_free(val1);

  668.         } else {

  669.             wctx->writer->print_string(wctx, key, val);

  670.         }

  671. 

  672.         wctx->nb_item[wctx->level]++;

  673.     }

  674. 

  675.     return ret;

  676. }

  677. 

  678. static inline void writer_print_rational(WriterContext *wctx,

  679.                                          const char *key, AVRational q, char sep)

  680. {

  681.     AVBPrint buf;

  682.     av_bprint_init(&buf, 0, AV_BPRINT_SIZE_AUTOMATIC);

  683.     av_bprintf(&buf, "%d%c%d", q.num, sep, q.den);

  684.     writer_print_string(wctx, key, buf.str, 0);

  685. }

  686. 

  687. static void writer_print_time(WriterContext *wctx, const char *key,

  688.                               int64_t ts, const AVRational *time_base, int is_duration)

  689. {

  690.     char buf[128];

  691. 

  692.     if ((!is_duration && ts == AV_NOPTS_VALUE) || (is_duration && ts == 0)) {

  693.         writer_print_string(wctx, key, "N/A", PRINT_STRING_OPT);

  694.     } else {

  695.         double d = ts * av_q2d(*time_base);

  696.         struct unit_value uv;

  697.         uv.val.d = d;

  698.         uv.unit = unit_second_str;

  699.         value_string(buf, sizeof(buf), uv);

  700.         writer_print_string(wctx, key, buf, 0);

  701.     }

  702. }

  703. 

  704. static void writer_print_ts(WriterContext *wctx, const char *key, int64_t ts, int is_duration)

  705. {

  706.     if ((!is_duration && ts == AV_NOPTS_VALUE) || (is_duration && ts == 0)) {

  707.         writer_print_string(wctx, key, "N/A", PRINT_STRING_OPT);

  708.     } else {

  709.         writer_print_integer(wctx, key, ts);

  710.     }

  711. }

  712. 

  713. static void writer_print_data(WriterContext *wctx, const char *name,

  714.                               uint8_t *data, int size)

  715. {

  716.     AVBPrint bp;

  717.     int offset = 0, l, i;

  718. 

  719.     av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED);

  720.     av_bprintf(&bp, "\n");

  721.     while (size) {

  722.         av_bprintf(&bp, "%08x: ", offset);

  723.         l = FFMIN(size, 16);

  724.         for (i = 0; i < l; i++) {

  725.             av_bprintf(&bp, "%02x", data[i]);

  726.             if (i & 1)

  727.                 av_bprintf(&bp, " ");

  728.         }

  729.         av_bprint_chars(&bp, ' ', 41 - 2 * i - i / 2);

  730.         for (i = 0; i < l; i++)

  731.             av_bprint_chars(&bp, data[i] - 32U < 95 ? data[i] : '.', 1);

  732.         av_bprintf(&bp, "\n");

  733.         offset += l;

  734.         data   += l;

  735.         size   -= l;

  736.     }

  737.     writer_print_string(wctx, name, bp.str, 0);

  738.     av_bprint_finalize(&bp, NULL);

  739. }

  740. 

  741. static void writer_print_data_hash(WriterContext *wctx, const char *name,

  742.                                    uint8_t *data, int size)

  743. {

  744.     char *p, buf[AV_HASH_MAX_SIZE * 2 + 64] = { 0 };

  745. 

  746.     if (!hash)

  747.         return;

  748.     av_hash_init(hash);

  749.     av_hash_update(hash, data, size);

  750.     snprintf(buf, sizeof(buf), "%s:", av_hash_get_name(hash));

  751.     p = buf + strlen(buf);

  752.     av_hash_final_hex(hash, p, buf + sizeof(buf) - p);

  753.     writer_print_string(wctx, name, buf, 0);

  754. }

  755. 

  756. static void writer_print_integers(WriterContext *wctx, const char *name,

  757.                                   uint8_t *data, int size, const char *format,

  758.                                   int columns, int bytes, int offset_add)

  759. {

  760.     AVBPrint bp;

  761.     int offset = 0, l, i;

  762. 

  763.     av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED);

  764.     av_bprintf(&bp, "\n");

  765.     while (size) {

  766.         av_bprintf(&bp, "%08x: ", offset);

  767.         l = FFMIN(size, columns);

  768.         for (i = 0; i < l; i++) {

  769.             if      (bytes == 1) av_bprintf(&bp, format, *data);

  770.             else if (bytes == 2) av_bprintf(&bp, format, AV_RN16(data));

  771.             else if (bytes == 4) av_bprintf(&bp, format, AV_RN32(data));

  772.             data += bytes;

  773.             size --;

  774.         }

  775.         av_bprintf(&bp, "\n");

  776.         offset += offset_add;

  777.     }

  778.     writer_print_string(wctx, name, bp.str, 0);

  779.     av_bprint_finalize(&bp, NULL);

  780. }

  781. 

  782. #define MAX_REGISTERED_WRITERS_NB 64

  783. 

  784. static const Writer *registered_writers[MAX_REGISTERED_WRITERS_NB + 1];

  785. 

  786. static int writer_register(const Writer *writer)

  787. {

  788.     static int next_registered_writer_idx = 0;

  789. 

  790.     if (next_registered_writer_idx == MAX_REGISTERED_WRITERS_NB)

  791.         return AVERROR(ENOMEM);

  792. 

  793.     registered_writers[next_registered_writer_idx++] = writer;

  794.     return 0;

  795. }

  796. 

  797. static const Writer *writer_get_by_name(const char *name)

  798. {

  799.     int i;

  800. 

  801.     for (i = 0; registered_writers[i]; i++)

  802.         if (!strcmp(registered_writers[i]->name, name))

  803.             return registered_writers[i];

  804. 

  805.     return NULL;

  806. }

  807. 

  808. 

  809. /* WRITERS */

  810. 

  811. #define DEFINE_WRITER_CLASS(name)                   \

  812. static const char *name##_get_name(void *ctx)       \

  813. {                                                   \

  814.     return #name ;                                  \

  815. }                                                   \

  816. static const AVClass name##_class = {               \

  817.     .class_name = #name,                            \

  818.     .item_name  = name##_get_name,                  \

  819.     .option     = name##_options                    \

  820. }

  821. 

  822. /* Default output */

  823. 

  824. typedef struct DefaultContext {

  825.     const AVClass *class;

  826.     int nokey;

  827.     int noprint_wrappers;

  828.     int nested_section[SECTION_MAX_NB_LEVELS];

  829. } DefaultContext;

  830. 

  831. #undef OFFSET

  832. #define OFFSET(x) offsetof(DefaultContext, x)

  833. 

  834. static const AVOption default_options[] = {

  835.     { "noprint_wrappers", "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },

  836.     { "nw",               "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },

  837.     { "nokey",          "force no key printing",     OFFSET(nokey),          AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },

  838.     { "nk",             "force no key printing",     OFFSET(nokey),          AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },

  839.     {NULL},

  840. };

  841. 

  842. DEFINE_WRITER_CLASS(default);

  843. 

  844. /* lame uppercasing routine, assumes the string is lower case ASCII */

  845. static inline char *upcase_string(char *dst, size_t dst_size, const char *src)

  846. {

  847.     int i;

  848.     for (i = 0; src[i] && i < dst_size-1; i++)

  849.         dst[i] = av_toupper(src[i]);

  850.     dst[i] = 0;

  851.     return dst;

  852. }

  853. 

  854. static void default_print_section_header(WriterContext *wctx)

  855. {

  856.     DefaultContext *def = wctx->priv;

  857.     char buf[32];

  858.     const struct section *section = wctx->section[wctx->level];

  859.     const struct section *parent_section = wctx->level ?

  860.         wctx->section[wctx->level-1] : NULL;

  861. 

  862.     av_bprint_clear(&wctx->section_pbuf[wctx->level]);

  863.     if (parent_section &&

  864.         !(parent_section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY))) {

  865.         def->nested_section[wctx->level] = 1;

  866.         av_bprintf(&wctx->section_pbuf[wctx->level], "%s%s:",

  867.                    wctx->section_pbuf[wctx->level-1].str,

  868.                    upcase_string(buf, sizeof(buf),

  869.                                  av_x_if_null(section->element_name, section->name)));

  870.     }

  871. 

  872.     if (def->noprint_wrappers || def->nested_section[wctx->level])

  873.         return;

  874. 

  875.     if (!(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))

  876.         printf("[%s]\n", upcase_string(buf, sizeof(buf), section->name));

  877. }

  878. 

  879. static void default_print_section_footer(WriterContext *wctx)

  880. {

  881.     DefaultContext *def = wctx->priv;

  882.     const struct section *section = wctx->section[wctx->level];

  883.     char buf[32];

  884. 

  885.     if (def->noprint_wrappers || def->nested_section[wctx->level])

  886.         return;

  887. 

  888.     if (!(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))

  889.         printf("[/%s]\n", upcase_string(buf, sizeof(buf), section->name));

  890. }

  891. 

  892. static void default_print_str(WriterContext *wctx, const char *key, const char *value)

  893. {

  894.     DefaultContext *def = wctx->priv;

  895. 

  896.     if (!def->nokey)

  897.         printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);

  898.     printf("%s\n", value);

  899. }

  900. 

  901. static void default_print_int(WriterContext *wctx, const char *key, long long int value)

  902. {

  903.     DefaultContext *def = wctx->priv;

  904. 

  905.     if (!def->nokey)

  906.         printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);

  907.     printf("%lld\n", value);

  908. }

  909. 

  910. static const Writer default_writer = {

  911.     .name                  = "default",

  912.     .priv_size             = sizeof(DefaultContext),

  913.     .print_section_header  = default_print_section_header,

  914.     .print_section_footer  = default_print_section_footer,

  915.     .print_integer         = default_print_int,

  916.     .print_string          = default_print_str,

  917.     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,

  918.     .priv_class            = &default_class,

  919. };

  920. 

  921. /* Compact output */

  922. 

  923. /**

  924.  * Apply C-language-like string escaping.

  925.  */

  926. static const char *c_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)

  927. {

  928.     const char *p;

  929. 

  930.     for (p = src; *p; p++) {

  931.         switch (*p) {

  932.         case '\b': av_bprintf(dst, "%s", "\\b");  break;

  933.         case '\f': av_bprintf(dst, "%s", "\\f");  break;

  934.         case '\n': av_bprintf(dst, "%s", "\\n");  break;

  935.         case '\r': av_bprintf(dst, "%s", "\\r");  break;

  936.         case '\\': av_bprintf(dst, "%s", "\\\\"); break;

  937.         default:

  938.             if (*p == sep)

  939.                 av_bprint_chars(dst, '\\', 1);

  940.             av_bprint_chars(dst, *p, 1);

  941.         }

  942.     }

  943.     return dst->str;

  944. }

  945. 

  946. /**

  947.  * Quote fields containing special characters, check RFC4180.

  948.  */

  949. static const char *csv_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)

  950. {

  951.     char meta_chars[] = { sep, '"', '\n', '\r', '\0' };

  952.     int needs_quoting = !!src[strcspn(src, meta_chars)];

  953. 

  954.     if (needs_quoting)

  955.         av_bprint_chars(dst, '"', 1);

  956. 

  957.     for (; *src; src++) {

  958.         if (*src == '"')

  959.             av_bprint_chars(dst, '"', 1);

  960.         av_bprint_chars(dst, *src, 1);

  961.     }

  962.     if (needs_quoting)

  963.         av_bprint_chars(dst, '"', 1);

  964.     return dst->str;

  965. }

  966. 

  967. static const char *none_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)

  968. {

  969.     return src;

  970. }

  971. 

  972. typedef struct CompactContext {

  973.     const AVClass *class;

  974.     char *item_sep_str;

  975.     char item_sep;

  976.     int nokey;

  977.     int print_section;

  978.     char *escape_mode_str;

  979.     const char * (*escape_str)(AVBPrint *dst, const char *src, const char sep, void *log_ctx);

  980.     int nested_section[SECTION_MAX_NB_LEVELS];

  981.     int has_nested_elems[SECTION_MAX_NB_LEVELS];

  982.     int terminate_line[SECTION_MAX_NB_LEVELS];

  983. } CompactContext;

  984. 

  985. #undef OFFSET

  986. #define OFFSET(x) offsetof(CompactContext, x)

  987. 

  988. static const AVOption compact_options[]= {

  989.     {"item_sep", "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str="|"},  CHAR_MIN, CHAR_MAX },

  990.     {"s",        "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str="|"},  CHAR_MIN, CHAR_MAX },

  991.     {"nokey",    "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=0},    0,        1        },

  992.     {"nk",       "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=0},    0,        1        },

  993.     {"escape",   "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"},  CHAR_MIN, CHAR_MAX },

  994.     {"e",        "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"},  CHAR_MIN, CHAR_MAX },

  995.     {"print_section", "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },

  996.     {"p",             "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },

  997.     {NULL},

  998. };

  999. 

  1000. DEFINE_WRITER_CLASS(compact);

  1001. 

  1002. static av_cold int compact_init(WriterContext *wctx)

  1003. {

  1004.     CompactContext *compact = wctx->priv;

  1005. 

  1006.     if (strlen(compact->item_sep_str) != 1) {

  1007.         av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",

  1008.                compact->item_sep_str);

  1009.         return AVERROR(EINVAL);

  1010.     }

  1011.     compact->item_sep = compact->item_sep_str[0];

  1012. 

  1013.     if      (!strcmp(compact->escape_mode_str, "none")) compact->escape_str = none_escape_str;

  1014.     else if (!strcmp(compact->escape_mode_str, "c"   )) compact->escape_str = c_escape_str;

  1015.     else if (!strcmp(compact->escape_mode_str, "csv" )) compact->escape_str = csv_escape_str;

  1016.     else {

  1017.         av_log(wctx, AV_LOG_ERROR, "Unknown escape mode '%s'\n", compact->escape_mode_str);

  1018.         return AVERROR(EINVAL);

  1019.     }

  1020. 

  1021.     return 0;

  1022. }

  1023. 

  1024. static void compact_print_section_header(WriterContext *wctx)

  1025. {

  1026.     CompactContext *compact = wctx->priv;

  1027.     const struct section *section = wctx->section[wctx->level];

  1028.     const struct section *parent_section = wctx->level ?

  1029.         wctx->section[wctx->level-1] : NULL;

  1030.     compact->terminate_line[wctx->level] = 1;

  1031.     compact->has_nested_elems[wctx->level] = 0;

  1032. 

  1033.     av_bprint_clear(&wctx->section_pbuf[wctx->level]);

  1034.     if (!(section->flags & SECTION_FLAG_IS_ARRAY) && parent_section &&

  1035.         !(parent_section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY))) {

  1036.         compact->nested_section[wctx->level] = 1;

  1037.         compact->has_nested_elems[wctx->level-1] = 1;

  1038.         av_bprintf(&wctx->section_pbuf[wctx->level], "%s%s:",

  1039.                    wctx->section_pbuf[wctx->level-1].str,

  1040.                    (char *)av_x_if_null(section->element_name, section->name));

  1041.         wctx->nb_item[wctx->level] = wctx->nb_item[wctx->level-1];

  1042.     } else {

  1043.         if (parent_section && compact->has_nested_elems[wctx->level-1] &&

  1044.             (section->flags & SECTION_FLAG_IS_ARRAY)) {

  1045.             compact->terminate_line[wctx->level-1] = 0;

  1046.             printf("\n");

  1047.         }

  1048.         if (compact->print_section &&

  1049.             !(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))

  1050.             printf("%s%c", section->name, compact->item_sep);

  1051.     }

  1052. }

  1053. 

  1054. static void compact_print_section_footer(WriterContext *wctx)

  1055. {

  1056.     CompactContext *compact = wctx->priv;

  1057. 

  1058.     if (!compact->nested_section[wctx->level] &&

  1059.         compact->terminate_line[wctx->level] &&

  1060.         !(wctx->section[wctx->level]->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))

  1061.         printf("\n");

  1062. }

  1063. 

  1064. static void compact_print_str(WriterContext *wctx, const char *key, const char *value)

  1065. {

  1066.     CompactContext *compact = wctx->priv;

  1067.     AVBPrint buf;

  1068. 

  1069.     if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);

  1070.     if (!compact->nokey)

  1071.         printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);

  1072.     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1073.     printf("%s", compact->escape_str(&buf, value, compact->item_sep, wctx));

  1074.     av_bprint_finalize(&buf, NULL);

  1075. }

  1076. 

  1077. static void compact_print_int(WriterContext *wctx, const char *key, long long int value)

  1078. {

  1079.     CompactContext *compact = wctx->priv;

  1080. 

  1081.     if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);

  1082.     if (!compact->nokey)

  1083.         printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);

  1084.     printf("%lld", value);

  1085. }

  1086. 

  1087. static const Writer compact_writer = {

  1088.     .name                 = "compact",

  1089.     .priv_size            = sizeof(CompactContext),

  1090.     .init                 = compact_init,

  1091.     .print_section_header = compact_print_section_header,

  1092.     .print_section_footer = compact_print_section_footer,

  1093.     .print_integer        = compact_print_int,

  1094.     .print_string         = compact_print_str,

  1095.     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,

  1096.     .priv_class           = &compact_class,

  1097. };

  1098. 

  1099. /* CSV output */

  1100. 

  1101. #undef OFFSET

  1102. #define OFFSET(x) offsetof(CompactContext, x)

  1103. 

  1104. static const AVOption csv_options[] = {

  1105.     {"item_sep", "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str=","},  CHAR_MIN, CHAR_MAX },

  1106.     {"s",        "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str=","},  CHAR_MIN, CHAR_MAX },

  1107.     {"nokey",    "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },

  1108.     {"nk",       "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },

  1109.     {"escape",   "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="csv"}, CHAR_MIN, CHAR_MAX },

  1110.     {"e",        "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="csv"}, CHAR_MIN, CHAR_MAX },

  1111.     {"print_section", "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },

  1112.     {"p",             "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },

  1113.     {NULL},

  1114. };

  1115. 

  1116. DEFINE_WRITER_CLASS(csv);

  1117. 

  1118. static const Writer csv_writer = {

  1119.     .name                 = "csv",

  1120.     .priv_size            = sizeof(CompactContext),

  1121.     .init                 = compact_init,

  1122.     .print_section_header = compact_print_section_header,

  1123.     .print_section_footer = compact_print_section_footer,

  1124.     .print_integer        = compact_print_int,

  1125.     .print_string         = compact_print_str,

  1126.     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,

  1127.     .priv_class           = &csv_class,

  1128. };

  1129. 

  1130. /* Flat output */

  1131. 

  1132. typedef struct FlatContext {

  1133.     const AVClass *class;

  1134.     const char *sep_str;

  1135.     char sep;

  1136.     int hierarchical;

  1137. } FlatContext;

  1138. 

  1139. #undef OFFSET

  1140. #define OFFSET(x) offsetof(FlatContext, x)

  1141. 

  1142. static const AVOption flat_options[]= {

  1143.     {"sep_char", "set separator",    OFFSET(sep_str),    AV_OPT_TYPE_STRING, {.str="."},  CHAR_MIN, CHAR_MAX },

  1144.     {"s",        "set separator",    OFFSET(sep_str),    AV_OPT_TYPE_STRING, {.str="."},  CHAR_MIN, CHAR_MAX },

  1145.     {"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },

  1146.     {"h",            "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },

  1147.     {NULL},

  1148. };

  1149. 

  1150. DEFINE_WRITER_CLASS(flat);

  1151. 

  1152. static av_cold int flat_init(WriterContext *wctx)

  1153. {

  1154.     FlatContext *flat = wctx->priv;

  1155. 

  1156.     if (strlen(flat->sep_str) != 1) {

  1157.         av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",

  1158.                flat->sep_str);

  1159.         return AVERROR(EINVAL);

  1160.     }

  1161.     flat->sep = flat->sep_str[0];

  1162. 

  1163.     return 0;

  1164. }

  1165. 

  1166. static const char *flat_escape_key_str(AVBPrint *dst, const char *src, const char sep)

  1167. {

  1168.     const char *p;

  1169. 

  1170.     for (p = src; *p; p++) {

  1171.         if (!((*p >= '0' && *p <= '9') ||

  1172.               (*p >= 'a' && *p <= 'z') ||

  1173.               (*p >= 'A' && *p <= 'Z')))

  1174.             av_bprint_chars(dst, '_', 1);

  1175.         else

  1176.             av_bprint_chars(dst, *p, 1);

  1177.     }

  1178.     return dst->str;

  1179. }

  1180. 

  1181. static const char *flat_escape_value_str(AVBPrint *dst, const char *src)

  1182. {

  1183.     const char *p;

  1184. 

  1185.     for (p = src; *p; p++) {

  1186.         switch (*p) {

  1187.         case '\n': av_bprintf(dst, "%s", "\\n");  break;

  1188.         case '\r': av_bprintf(dst, "%s", "\\r");  break;

  1189.         case '\\': av_bprintf(dst, "%s", "\\\\"); break;

  1190.         case '"':  av_bprintf(dst, "%s", "\\\""); break;

  1191.         case '`':  av_bprintf(dst, "%s", "\\`");  break;

  1192.         case '$':  av_bprintf(dst, "%s", "\\$");  break;

  1193.         default:   av_bprint_chars(dst, *p, 1);   break;

  1194.         }

  1195.     }

  1196.     return dst->str;

  1197. }

  1198. 

  1199. static void flat_print_section_header(WriterContext *wctx)

  1200. {

  1201.     FlatContext *flat = wctx->priv;

  1202.     AVBPrint *buf = &wctx->section_pbuf[wctx->level];

  1203.     const struct section *section = wctx->section[wctx->level];

  1204.     const struct section *parent_section = wctx->level ?

  1205.         wctx->section[wctx->level-1] : NULL;

  1206. 

  1207.     /* build section header */

  1208.     av_bprint_clear(buf);

  1209.     if (!parent_section)

  1210.         return;

  1211.     av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);

  1212. 

  1213.     if (flat->hierarchical ||

  1214.         !(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER))) {

  1215.         av_bprintf(buf, "%s%s", wctx->section[wctx->level]->name, flat->sep_str);

  1216. 

  1217.         if (parent_section->flags & SECTION_FLAG_IS_ARRAY) {

  1218.             int n = parent_section->id == SECTION_ID_PACKETS_AND_FRAMES ?

  1219.                 wctx->nb_section_packet_frame : wctx->nb_item[wctx->level-1];

  1220.             av_bprintf(buf, "%d%s", n, flat->sep_str);

  1221.         }

  1222.     }

  1223. }

  1224. 

  1225. static void flat_print_int(WriterContext *wctx, const char *key, long long int value)

  1226. {

  1227.     printf("%s%s=%lld\n", wctx->section_pbuf[wctx->level].str, key, value);

  1228. }

  1229. 

  1230. static void flat_print_str(WriterContext *wctx, const char *key, const char *value)

  1231. {

  1232.     FlatContext *flat = wctx->priv;

  1233.     AVBPrint buf;

  1234. 

  1235.     printf("%s", wctx->section_pbuf[wctx->level].str);

  1236.     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1237.     printf("%s=", flat_escape_key_str(&buf, key, flat->sep));

  1238.     av_bprint_clear(&buf);

  1239.     printf("\"%s\"\n", flat_escape_value_str(&buf, value));

  1240.     av_bprint_finalize(&buf, NULL);

  1241. }

  1242. 

  1243. static const Writer flat_writer = {

  1244.     .name                  = "flat",

  1245.     .priv_size             = sizeof(FlatContext),

  1246.     .init                  = flat_init,

  1247.     .print_section_header  = flat_print_section_header,

  1248.     .print_integer         = flat_print_int,

  1249.     .print_string          = flat_print_str,

  1250.     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS|WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,

  1251.     .priv_class            = &flat_class,

  1252. };

  1253. 

  1254. /* INI format output */

  1255. 

  1256. typedef struct INIContext {

  1257.     const AVClass *class;

  1258.     int hierarchical;

  1259. } INIContext;

  1260. 

  1261. #undef OFFSET

  1262. #define OFFSET(x) offsetof(INIContext, x)

  1263. 

  1264. static const AVOption ini_options[] = {

  1265.     {"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },

  1266.     {"h",            "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },

  1267.     {NULL},

  1268. };

  1269. 

  1270. DEFINE_WRITER_CLASS(ini);

  1271. 

  1272. static char *ini_escape_str(AVBPrint *dst, const char *src)

  1273. {

  1274.     int i = 0;

  1275.     char c = 0;

  1276. 

  1277.     while (c = src[i++]) {

  1278.         switch (c) {

  1279.         case '\b': av_bprintf(dst, "%s", "\\b"); break;

  1280.         case '\f': av_bprintf(dst, "%s", "\\f"); break;

  1281.         case '\n': av_bprintf(dst, "%s", "\\n"); break;

  1282.         case '\r': av_bprintf(dst, "%s", "\\r"); break;

  1283.         case '\t': av_bprintf(dst, "%s", "\\t"); break;

  1284.         case '\\':

  1285.         case '#' :

  1286.         case '=' :

  1287.         case ':' : av_bprint_chars(dst, '\\', 1);

  1288.         default:

  1289.             if ((unsigned char)c < 32)

  1290.                 av_bprintf(dst, "\\x00%02x", c & 0xff);

  1291.             else

  1292.                 av_bprint_chars(dst, c, 1);

  1293.             break;

  1294.         }

  1295.     }

  1296.     return dst->str;

  1297. }

  1298. 

  1299. static void ini_print_section_header(WriterContext *wctx)

  1300. {

  1301.     INIContext *ini = wctx->priv;

  1302.     AVBPrint *buf = &wctx->section_pbuf[wctx->level];

  1303.     const struct section *section = wctx->section[wctx->level];

  1304.     const struct section *parent_section = wctx->level ?

  1305.         wctx->section[wctx->level-1] : NULL;

  1306. 

  1307.     av_bprint_clear(buf);

  1308.     if (!parent_section) {

  1309.         printf("# ffprobe output\n\n");

  1310.         return;

  1311.     }

  1312. 

  1313.     if (wctx->nb_item[wctx->level-1])

  1314.         printf("\n");

  1315. 

  1316.     av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);

  1317.     if (ini->hierarchical ||

  1318.         !(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER))) {

  1319.         av_bprintf(buf, "%s%s", buf->str[0] ? "." : "", wctx->section[wctx->level]->name);

  1320. 

  1321.         if (parent_section->flags & SECTION_FLAG_IS_ARRAY) {

  1322.             int n = parent_section->id == SECTION_ID_PACKETS_AND_FRAMES ?

  1323.                 wctx->nb_section_packet_frame : wctx->nb_item[wctx->level-1];

  1324.             av_bprintf(buf, ".%d", n);

  1325.         }

  1326.     }

  1327. 

  1328.     if (!(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER)))

  1329.         printf("[%s]\n", buf->str);

  1330. }

  1331. 

  1332. static void ini_print_str(WriterContext *wctx, const char *key, const char *value)

  1333. {

  1334.     AVBPrint buf;

  1335. 

  1336.     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1337.     printf("%s=", ini_escape_str(&buf, key));

  1338.     av_bprint_clear(&buf);

  1339.     printf("%s\n", ini_escape_str(&buf, value));

  1340.     av_bprint_finalize(&buf, NULL);

  1341. }

  1342. 

  1343. static void ini_print_int(WriterContext *wctx, const char *key, long long int value)

  1344. {

  1345.     printf("%s=%lld\n", key, value);

  1346. }

  1347. 

  1348. static const Writer ini_writer = {

  1349.     .name                  = "ini",

  1350.     .priv_size             = sizeof(INIContext),

  1351.     .print_section_header  = ini_print_section_header,

  1352.     .print_integer         = ini_print_int,

  1353.     .print_string          = ini_print_str,

  1354.     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS|WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,

  1355.     .priv_class            = &ini_class,

  1356. };

  1357. 

  1358. /* JSON output */

  1359. 

  1360. typedef struct JSONContext {

  1361.     const AVClass *class;

  1362.     int indent_level;

  1363.     int compact;

  1364.     const char *item_sep, *item_start_end;

  1365. } JSONContext;

  1366. 

  1367. #undef OFFSET

  1368. #define OFFSET(x) offsetof(JSONContext, x)

  1369. 

  1370. static const AVOption json_options[]= {

  1371.     { "compact", "enable compact output", OFFSET(compact), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },

  1372.     { "c",       "enable compact output", OFFSET(compact), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },

  1373.     { NULL }

  1374. };

  1375. 

  1376. DEFINE_WRITER_CLASS(json);

  1377. 

  1378. static av_cold int json_init(WriterContext *wctx)

  1379. {

  1380.     JSONContext *json = wctx->priv;

  1381. 

  1382.     json->item_sep       = json->compact ? ", " : ",\n";

  1383.     json->item_start_end = json->compact ? " "  : "\n";

  1384. 

  1385.     return 0;

  1386. }

  1387. 

  1388. static const char *json_escape_str(AVBPrint *dst, const char *src, void *log_ctx)

  1389. {

  1390.     static const char json_escape[] = {'"', '\\', '\b', '\f', '\n', '\r', '\t', 0};

  1391.     static const char json_subst[]  = {'"', '\\',  'b',  'f',  'n',  'r',  't', 0};

  1392.     const char *p;

  1393. 

  1394.     for (p = src; *p; p++) {

  1395.         char *s = strchr(json_escape, *p);

  1396.         if (s) {

  1397.             av_bprint_chars(dst, '\\', 1);

  1398.             av_bprint_chars(dst, json_subst[s - json_escape], 1);

  1399.         } else if ((unsigned char)*p < 32) {

  1400.             av_bprintf(dst, "\\u00%02x", *p & 0xff);

  1401.         } else {

  1402.             av_bprint_chars(dst, *p, 1);

  1403.         }

  1404.     }

  1405.     return dst->str;

  1406. }

  1407. 

  1408. #define JSON_INDENT() printf("%*c", json->indent_level * 4, ' ')

  1409. 

  1410. static void json_print_section_header(WriterContext *wctx)

  1411. {

  1412.     JSONContext *json = wctx->priv;

  1413.     AVBPrint buf;

  1414.     const struct section *section = wctx->section[wctx->level];

  1415.     const struct section *parent_section = wctx->level ?

  1416.         wctx->section[wctx->level-1] : NULL;

  1417. 

  1418.     if (wctx->level && wctx->nb_item[wctx->level-1])

  1419.         printf(",\n");

  1420. 

  1421.     if (section->flags & SECTION_FLAG_IS_WRAPPER) {

  1422.         printf("{\n");

  1423.         json->indent_level++;

  1424.     } else {

  1425.         av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1426.         json_escape_str(&buf, section->name, wctx);

  1427.         JSON_INDENT();

  1428. 

  1429.         json->indent_level++;

  1430.         if (section->flags & SECTION_FLAG_IS_ARRAY) {

  1431.             printf("\"%s\": [\n", buf.str);

  1432.         } else if (parent_section && !(parent_section->flags & SECTION_FLAG_IS_ARRAY)) {

  1433.             printf("\"%s\": {%s", buf.str, json->item_start_end);

  1434.         } else {

  1435.             printf("{%s", json->item_start_end);

  1436. 

  1437.             /* this is required so the parser can distinguish between packets and frames */

  1438.             if (parent_section && parent_section->id == SECTION_ID_PACKETS_AND_FRAMES) {

  1439.                 if (!json->compact)

  1440.                     JSON_INDENT();

  1441.                 printf("\"type\": \"%s\"%s", section->name, json->item_sep);

  1442.             }

  1443.         }

  1444.         av_bprint_finalize(&buf, NULL);

  1445.     }

  1446. }

  1447. 

  1448. static void json_print_section_footer(WriterContext *wctx)

  1449. {

  1450.     JSONContext *json = wctx->priv;

  1451.     const struct section *section = wctx->section[wctx->level];

  1452. 

  1453.     if (wctx->level == 0) {

  1454.         json->indent_level--;

  1455.         printf("\n}\n");

  1456.     } else if (section->flags & SECTION_FLAG_IS_ARRAY) {

  1457.         printf("\n");

  1458.         json->indent_level--;

  1459.         JSON_INDENT();

  1460.         printf("]");

  1461.     } else {

  1462.         printf("%s", json->item_start_end);

  1463.         json->indent_level--;

  1464.         if (!json->compact)

  1465.             JSON_INDENT();

  1466.         printf("}");

  1467.     }

  1468. }

  1469. 

  1470. static inline void json_print_item_str(WriterContext *wctx,

  1471.                                        const char *key, const char *value)

  1472. {

  1473.     AVBPrint buf;

  1474. 

  1475.     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1476.     printf("\"%s\":", json_escape_str(&buf, key,   wctx));

  1477.     av_bprint_clear(&buf);

  1478.     printf(" \"%s\"", json_escape_str(&buf, value, wctx));

  1479.     av_bprint_finalize(&buf, NULL);

  1480. }

  1481. 

  1482. static void json_print_str(WriterContext *wctx, const char *key, const char *value)

  1483. {

  1484.     JSONContext *json = wctx->priv;

  1485. 

  1486.     if (wctx->nb_item[wctx->level])

  1487.         printf("%s", json->item_sep);

  1488.     if (!json->compact)

  1489.         JSON_INDENT();

  1490.     json_print_item_str(wctx, key, value);

  1491. }

  1492. 

  1493. static void json_print_int(WriterContext *wctx, const char *key, long long int value)

  1494. {

  1495.     JSONContext *json = wctx->priv;

  1496.     AVBPrint buf;

  1497. 

  1498.     if (wctx->nb_item[wctx->level])

  1499.         printf("%s", json->item_sep);

  1500.     if (!json->compact)

  1501.         JSON_INDENT();

  1502. 

  1503.     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1504.     printf("\"%s\": %lld", json_escape_str(&buf, key, wctx), value);

  1505.     av_bprint_finalize(&buf, NULL);

  1506. }

  1507. 

  1508. static const Writer json_writer = {

  1509.     .name                 = "json",

  1510.     .priv_size            = sizeof(JSONContext),

  1511.     .init                 = json_init,

  1512.     .print_section_header = json_print_section_header,

  1513.     .print_section_footer = json_print_section_footer,

  1514.     .print_integer        = json_print_int,

  1515.     .print_string         = json_print_str,

  1516.     .flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,

  1517.     .priv_class           = &json_class,

  1518. };

  1519. 

  1520. /* XML output */

  1521. 

  1522. typedef struct XMLContext {

  1523.     const AVClass *class;

  1524.     int within_tag;

  1525.     int indent_level;

  1526.     int fully_qualified;

  1527.     int xsd_strict;

  1528. } XMLContext;

  1529. 

  1530. #undef OFFSET

  1531. #define OFFSET(x) offsetof(XMLContext, x)

  1532. 

  1533. static const AVOption xml_options[] = {

  1534.     {"fully_qualified", "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },

  1535.     {"q",               "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },

  1536.     {"xsd_strict",      "ensure that the output is XSD compliant",         OFFSET(xsd_strict),      AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },

  1537.     {"x",               "ensure that the output is XSD compliant",         OFFSET(xsd_strict),      AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },

  1538.     {NULL},

  1539. };

  1540. 

  1541. DEFINE_WRITER_CLASS(xml);

  1542. 

  1543. static av_cold int xml_init(WriterContext *wctx)

  1544. {

  1545.     XMLContext *xml = wctx->priv;

  1546. 

  1547.     if (xml->xsd_strict) {

  1548.         xml->fully_qualified = 1;

  1549. #define CHECK_COMPLIANCE(opt, opt_name)                                 \

  1550.         if (opt) {                                                      \

  1551.             av_log(wctx, AV_LOG_ERROR,                                  \

  1552.                    "XSD-compliant output selected but option '%s' was selected, XML output may be non-compliant.\n" \

  1553.                    "You need to disable such option with '-no%s'\n", opt_name, opt_name); \

  1554.             return AVERROR(EINVAL);                                     \

  1555.         }

  1556.         CHECK_COMPLIANCE(show_private_data, "private");

  1557.         CHECK_COMPLIANCE(show_value_unit,   "unit");

  1558.         CHECK_COMPLIANCE(use_value_prefix,  "prefix");

  1559. 

  1560.         if (do_show_frames && do_show_packets) {

  1561.             av_log(wctx, AV_LOG_ERROR,

  1562.                    "Interleaved frames and packets are not allowed in XSD. "

  1563.                    "Select only one between the -show_frames and the -show_packets options.\n");

  1564.             return AVERROR(EINVAL);

  1565.         }

  1566.     }

  1567. 

  1568.     return 0;

  1569. }

  1570. 

  1571. static const char *xml_escape_str(AVBPrint *dst, const char *src, void *log_ctx)

  1572. {

  1573.     const char *p;

  1574. 

  1575.     for (p = src; *p; p++) {

  1576.         switch (*p) {

  1577.         case '&' : av_bprintf(dst, "%s", "&amp;");  break;

  1578.         case '<' : av_bprintf(dst, "%s", "&lt;");   break;

  1579.         case '>' : av_bprintf(dst, "%s", "&gt;");   break;

  1580.         case '"' : av_bprintf(dst, "%s", "&quot;"); break;

  1581.         case '\'': av_bprintf(dst, "%s", "&apos;"); break;

  1582.         default: av_bprint_chars(dst, *p, 1);

  1583.         }

  1584.     }

  1585. 

  1586.     return dst->str;

  1587. }

  1588. 

  1589. #define XML_INDENT() printf("%*c", xml->indent_level * 4, ' ')

  1590. 

  1591. static void xml_print_section_header(WriterContext *wctx)

  1592. {

  1593.     XMLContext *xml = wctx->priv;

  1594.     const struct section *section = wctx->section[wctx->level];

  1595.     const struct section *parent_section = wctx->level ?

  1596.         wctx->section[wctx->level-1] : NULL;

  1597. 

  1598.     if (wctx->level == 0) {

  1599.         const char *qual = " xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' "

  1600.             "xmlns:ffprobe='http://www.ffmpeg.org/schema/ffprobe' "

  1601.             "xsi:schemaLocation='http://www.ffmpeg.org/schema/ffprobe ffprobe.xsd'";

  1602. 

  1603.         printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");

  1604.         printf("<%sffprobe%s>\n",

  1605.                xml->fully_qualified ? "ffprobe:" : "",

  1606.                xml->fully_qualified ? qual : "");

  1607.         return;

  1608.     }

  1609. 

  1610.     if (xml->within_tag) {

  1611.         xml->within_tag = 0;

  1612.         printf(">\n");

  1613.     }

  1614.     if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {

  1615.         xml->indent_level++;

  1616.     } else {

  1617.         if (parent_section && (parent_section->flags & SECTION_FLAG_IS_WRAPPER) &&

  1618.             wctx->level && wctx->nb_item[wctx->level-1])

  1619.             printf("\n");

  1620.         xml->indent_level++;

  1621. 

  1622.         if (section->flags & SECTION_FLAG_IS_ARRAY) {

  1623.             XML_INDENT(); printf("<%s>\n", section->name);

  1624.         } else {

  1625.             XML_INDENT(); printf("<%s ", section->name);

  1626.             xml->within_tag = 1;

  1627.         }

  1628.     }

  1629. }

  1630. 

  1631. static void xml_print_section_footer(WriterContext *wctx)

  1632. {

  1633.     XMLContext *xml = wctx->priv;

  1634.     const struct section *section = wctx->section[wctx->level];

  1635. 

  1636.     if (wctx->level == 0) {

  1637.         printf("</%sffprobe>\n", xml->fully_qualified ? "ffprobe:" : "");

  1638.     } else if (xml->within_tag) {

  1639.         xml->within_tag = 0;

  1640.         printf("/>\n");

  1641.         xml->indent_level--;

  1642.     } else if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {

  1643.         xml->indent_level--;

  1644.     } else {

  1645.         XML_INDENT(); printf("</%s>\n", section->name);

  1646.         xml->indent_level--;

  1647.     }

  1648. }

  1649. 

  1650. static void xml_print_str(WriterContext *wctx, const char *key, const char *value)

  1651. {

  1652.     AVBPrint buf;

  1653.     XMLContext *xml = wctx->priv;

  1654.     const struct section *section = wctx->section[wctx->level];

  1655. 

  1656.     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1657. 

  1658.     if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {

  1659.         XML_INDENT();

  1660.         printf("<%s key=\"%s\"",

  1661.                section->element_name, xml_escape_str(&buf, key, wctx));

  1662.         av_bprint_clear(&buf);

  1663.         printf(" value=\"%s\"/>\n", xml_escape_str(&buf, value, wctx));

  1664.     } else {

  1665.         if (wctx->nb_item[wctx->level])

  1666.             printf(" ");

  1667.         printf("%s=\"%s\"", key, xml_escape_str(&buf, value, wctx));

  1668.     }

  1669. 

  1670.     av_bprint_finalize(&buf, NULL);

  1671. }

  1672. 

  1673. static void xml_print_int(WriterContext *wctx, const char *key, long long int value)

  1674. {

  1675.     if (wctx->nb_item[wctx->level])

  1676.         printf(" ");

  1677.     printf("%s=\"%lld\"", key, value);

  1678. }

  1679. 

  1680. static Writer xml_writer = {

  1681.     .name                 = "xml",

  1682.     .priv_size            = sizeof(XMLContext),

  1683.     .init                 = xml_init,

  1684.     .print_section_header = xml_print_section_header,

  1685.     .print_section_footer = xml_print_section_footer,

  1686.     .print_integer        = xml_print_int,

  1687.     .print_string         = xml_print_str,

  1688.     .flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,

  1689.     .priv_class           = &xml_class,

  1690. };

  1691. 

  1692. static void writer_register_all(void)

  1693. {

  1694.     static int initialized;

  1695. 

  1696.     if (initialized)

  1697.         return;

  1698.     initialized = 1;

  1699. 

  1700.     writer_register(&default_writer);

  1701.     writer_register(&compact_writer);

  1702.     writer_register(&csv_writer);

  1703.     writer_register(&flat_writer);

  1704.     writer_register(&ini_writer);

  1705.     writer_register(&json_writer);

  1706.     writer_register(&xml_writer);

  1707. }

  1708. 

  1709. #define print_fmt(k, f, ...) do {              \

  1710.     av_bprint_clear(&pbuf);                    \

  1711.     av_bprintf(&pbuf, f, __VA_ARGS__);         \

  1712.     writer_print_string(w, k, pbuf.str, 0);    \

  1713. } while (0)

  1714. 

  1715. #define print_int(k, v)         writer_print_integer(w, k, v)

  1716. #define print_q(k, v, s)        writer_print_rational(w, k, v, s)

  1717. #define print_str(k, v)         writer_print_string(w, k, v, 0)

  1718. #define print_str_opt(k, v)     writer_print_string(w, k, v, PRINT_STRING_OPT)

  1719. #define print_str_validate(k, v) writer_print_string(w, k, v, PRINT_STRING_VALIDATE)

  1720. #define print_time(k, v, tb)    writer_print_time(w, k, v, tb, 0)

  1721. #define print_ts(k, v)          writer_print_ts(w, k, v, 0)

  1722. #define print_duration_time(k, v, tb) writer_print_time(w, k, v, tb, 1)

  1723. #define print_duration_ts(k, v)       writer_print_ts(w, k, v, 1)

  1724. #define print_val(k, v, u) do {                                     \

  1725.     struct unit_value uv;                                           \

  1726.     uv.val.i = v;                                                   \

  1727.     uv.unit = u;                                                    \

  1728.     writer_print_string(w, k, value_string(val_str, sizeof(val_str), uv), 0); \

  1729. } while (0)

  1730. 

  1731. #define print_section_header(s) writer_print_section_header(w, s)

  1732. #define print_section_footer(s) writer_print_section_footer(w, s)

  1733. 

  1734. #define REALLOCZ_ARRAY_STREAM(ptr, cur_n, new_n)                        \

  1735. {                                                                       \

  1736.     ret = av_reallocp_array(&(ptr), (new_n), sizeof(*(ptr)));           \

  1737.     if (ret < 0)                                                        \

  1738.         goto end;                                                       \

  1739.     memset( (ptr) + (cur_n), 0, ((new_n) - (cur_n)) * sizeof(*(ptr)) ); \

  1740. }

  1741. 

  1742. static inline int show_tags(WriterContext *w, AVDictionary *tags, int section_id)

  1743. {

  1744.     AVDictionaryEntry *tag = NULL;

  1745.     int ret = 0;

  1746. 

  1747.     if (!tags)

  1748.         return 0;

  1749.     writer_print_section_header(w, section_id);

  1750. 

  1751.     while ((tag = av_dict_get(tags, "", tag, AV_DICT_IGNORE_SUFFIX))) {

  1752.         if ((ret = print_str_validate(tag->key, tag->value)) < 0)

  1753.             break;

  1754.     }

  1755.     writer_print_section_footer(w);

  1756. 

  1757.     return ret;

  1758. }

  1759. 

  1760. static void show_packet(WriterContext *w, AVFormatContext *fmt_ctx, AVPacket *pkt, int packet_idx)

  1761. {

  1762.     char val_str[128];

  1763.     AVStream *st = fmt_ctx->streams[pkt->stream_index];

  1764.     AVBPrint pbuf;

  1765.     const char *s;

  1766. 

  1767.     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1768. 

  1769.     writer_print_section_header(w, SECTION_ID_PACKET);

  1770. 

  1771.     s = av_get_media_type_string(st->codec->codec_type);

  1772.     if (s) print_str    ("codec_type", s);

  1773.     else   print_str_opt("codec_type", "unknown");

  1774.     print_int("stream_index",     pkt->stream_index);

  1775.     print_ts  ("pts",             pkt->pts);

  1776.     print_time("pts_time",        pkt->pts, &st->time_base);

  1777.     print_ts  ("dts",             pkt->dts);

  1778.     print_time("dts_time",        pkt->dts, &st->time_base);

  1779.     print_duration_ts("duration",        pkt->duration);

  1780.     print_duration_time("duration_time", pkt->duration, &st->time_base);

  1781.     print_duration_ts("convergence_duration", pkt->convergence_duration);

  1782.     print_duration_time("convergence_duration_time", pkt->convergence_duration, &st->time_base);

  1783.     print_val("size",             pkt->size, unit_byte_str);

  1784.     if (pkt->pos != -1) print_fmt    ("pos", "%"PRId64, pkt->pos);

  1785.     else                print_str_opt("pos", "N/A");

  1786.     print_fmt("flags", "%c",      pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_');

  1787. 

  1788.     if (pkt->side_data_elems) {

  1789.         int i;

  1790.         int size;

  1791.         const uint8_t *side_metadata;

  1792. 

  1793.         side_metadata = av_packet_get_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA, &size);

  1794.         if (side_metadata && size && do_show_packet_tags) {

  1795.             AVDictionary *dict = NULL;

  1796.             if (av_packet_unpack_dictionary(side_metadata, size, &dict) >= 0)

  1797.                 show_tags(w, dict, SECTION_ID_PACKET_TAGS);

  1798.             av_dict_free(&dict);

  1799.         }

  1800.         writer_print_section_header(w, SECTION_ID_PACKET_SIDE_DATA_LIST);

  1801.         for (i = 0; i < pkt->side_data_elems; i++) {

  1802.             AVPacketSideData *sd = &pkt->side_data[i];

  1803.             const char *name = av_packet_side_data_name(sd->type);

  1804.             writer_print_section_header(w, SECTION_ID_PACKET_SIDE_DATA);

  1805.             print_str("side_data_type", name ? name : "unknown");

  1806.             print_int("side_data_size", sd->size);

  1807.             if (sd->type == AV_PKT_DATA_DISPLAYMATRIX && sd->size >= 9*4) {

  1808.                 writer_print_integers(w, "displaymatrix", sd->data, 9, " %11d", 3, 4, 1);

  1809.                 print_int("rotation", av_display_rotation_get((int32_t *)sd->data));

  1810.             }

  1811.             writer_print_section_footer(w);

  1812.         }

  1813.         writer_print_section_footer(w);

  1814.     }

  1815. 

  1816.     if (do_show_data)

  1817.         writer_print_data(w, "data", pkt->data, pkt->size);

  1818.     writer_print_data_hash(w, "data_hash", pkt->data, pkt->size);

  1819.     writer_print_section_footer(w);

  1820. 

  1821.     av_bprint_finalize(&pbuf, NULL);

  1822.     fflush(stdout);

  1823. }

  1824. 

  1825. static void show_subtitle(WriterContext *w, AVSubtitle *sub, AVStream *stream,

  1826.                           AVFormatContext *fmt_ctx)

  1827. {

  1828.     AVBPrint pbuf;

  1829. 

  1830.     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1831. 

  1832.     writer_print_section_header(w, SECTION_ID_SUBTITLE);

  1833. 

  1834.     print_str ("media_type",         "subtitle");

  1835.     print_ts  ("pts",                 sub->pts);

  1836.     print_time("pts_time",            sub->pts, &AV_TIME_BASE_Q);

  1837.     print_int ("format",              sub->format);

  1838.     print_int ("start_display_time",  sub->start_display_time);

  1839.     print_int ("end_display_time",    sub->end_display_time);

  1840.     print_int ("num_rects",           sub->num_rects);

  1841. 

  1842.     writer_print_section_footer(w);

  1843. 

  1844.     av_bprint_finalize(&pbuf, NULL);

  1845.     fflush(stdout);

  1846. }

  1847. 

  1848. static void show_frame(WriterContext *w, AVFrame *frame, AVStream *stream,

  1849.                        AVFormatContext *fmt_ctx)

  1850. {

  1851.     AVBPrint pbuf;

  1852.     char val_str[128];

  1853.     const char *s;

  1854.     int i;

  1855. 

  1856.     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1857. 

  1858.     writer_print_section_header(w, SECTION_ID_FRAME);

  1859. 

  1860.     s = av_get_media_type_string(stream->codec->codec_type);

  1861.     if (s) print_str    ("media_type", s);

  1862.     else   print_str_opt("media_type", "unknown");

  1863.     print_int("stream_index",           stream->index);

  1864.     print_int("key_frame",              frame->key_frame);

  1865.     print_ts  ("pkt_pts",               frame->pkt_pts);

  1866.     print_time("pkt_pts_time",          frame->pkt_pts, &stream->time_base);

  1867.     print_ts  ("pkt_dts",               frame->pkt_dts);

  1868.     print_time("pkt_dts_time",          frame->pkt_dts, &stream->time_base);

  1869.     print_ts  ("best_effort_timestamp", av_frame_get_best_effort_timestamp(frame));

  1870.     print_time("best_effort_timestamp_time", av_frame_get_best_effort_timestamp(frame), &stream->time_base);

  1871.     print_duration_ts  ("pkt_duration",      av_frame_get_pkt_duration(frame));

  1872.     print_duration_time("pkt_duration_time", av_frame_get_pkt_duration(frame), &stream->time_base);

  1873.     if (av_frame_get_pkt_pos (frame) != -1) print_fmt    ("pkt_pos", "%"PRId64, av_frame_get_pkt_pos(frame));

  1874.     else                      print_str_opt("pkt_pos", "N/A");

  1875.     if (av_frame_get_pkt_size(frame) != -1) print_val    ("pkt_size", av_frame_get_pkt_size(frame), unit_byte_str);

  1876.     else                       print_str_opt("pkt_size", "N/A");

  1877. 

  1878.     switch (stream->codec->codec_type) {

  1879.         AVRational sar;

  1880. 

  1881.     case AVMEDIA_TYPE_VIDEO:

  1882.         print_int("width",                  frame->width);

  1883.         print_int("height",                 frame->height);

  1884.         s = av_get_pix_fmt_name(frame->format);

  1885.         if (s) print_str    ("pix_fmt", s);

  1886.         else   print_str_opt("pix_fmt", "unknown");

  1887.         sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, frame);

  1888.         if (sar.num) {

  1889.             print_q("sample_aspect_ratio", sar, ':');

  1890.         } else {

  1891.             print_str_opt("sample_aspect_ratio", "N/A");

  1892.         }

  1893.         print_fmt("pict_type",              "%c", av_get_picture_type_char(frame->pict_type));

  1894.         print_int("coded_picture_number",   frame->coded_picture_number);

  1895.         print_int("display_picture_number", frame->display_picture_number);

  1896.         print_int("interlaced_frame",       frame->interlaced_frame);

  1897.         print_int("top_field_first",        frame->top_field_first);

  1898.         print_int("repeat_pict",            frame->repeat_pict);

  1899.         break;

  1900. 

  1901.     case AVMEDIA_TYPE_AUDIO:

  1902.         s = av_get_sample_fmt_name(frame->format);

  1903.         if (s) print_str    ("sample_fmt", s);

  1904.         else   print_str_opt("sample_fmt", "unknown");

  1905.         print_int("nb_samples",         frame->nb_samples);

  1906.         print_int("channels", av_frame_get_channels(frame));

  1907.         if (av_frame_get_channel_layout(frame)) {

  1908.             av_bprint_clear(&pbuf);

  1909.             av_bprint_channel_layout(&pbuf, av_frame_get_channels(frame),

  1910.                                      av_frame_get_channel_layout(frame));

  1911.             print_str    ("channel_layout", pbuf.str);

  1912.         } else

  1913.             print_str_opt("channel_layout", "unknown");

  1914.         break;

  1915.     }

  1916.     if (do_show_frame_tags)

  1917.         show_tags(w, av_frame_get_metadata(frame), SECTION_ID_FRAME_TAGS);

  1918.     if (frame->nb_side_data) {

  1919.         writer_print_section_header(w, SECTION_ID_FRAME_SIDE_DATA_LIST);

  1920.         for (i = 0; i < frame->nb_side_data; i++) {

  1921.             AVFrameSideData *sd = frame->side_data[i];

  1922.             const char *name;

  1923. 

  1924.             writer_print_section_header(w, SECTION_ID_FRAME_SIDE_DATA);

  1925.             name = av_frame_side_data_name(sd->type);

  1926.             print_str("side_data_type", name ? name : "unknown");

  1927.             print_int("side_data_size", sd->size);

  1928.             if (sd->type == AV_FRAME_DATA_DISPLAYMATRIX && sd->size >= 9*4) {

  1929.                 writer_print_integers(w, "displaymatrix", sd->data, 9, " %11d", 3, 4, 1);

  1930.                 print_int("rotation", av_display_rotation_get((int32_t *)sd->data));

  1931.             } else if (sd->type == AV_FRAME_DATA_GOP_TIMECODE && sd->size >= 8) {

  1932.                 char tcbuf[AV_TIMECODE_STR_SIZE];

  1933.                 av_timecode_make_mpeg_tc_string(tcbuf, *(int64_t *)(sd->data));

  1934.                 print_str("timecode", tcbuf);

  1935.             }

  1936.             writer_print_section_footer(w);

  1937.         }

  1938.         writer_print_section_footer(w);

  1939.     }

  1940. 

  1941.     writer_print_section_footer(w);

  1942. 

  1943.     av_bprint_finalize(&pbuf, NULL);

  1944.     fflush(stdout);

  1945. }

  1946. 

  1947. static av_always_inline int process_frame(WriterContext *w,

  1948.                                           AVFormatContext *fmt_ctx,

  1949.                                           AVFrame *frame, AVPacket *pkt)

  1950. {

  1951.     AVCodecContext *dec_ctx = fmt_ctx->streams[pkt->stream_index]->codec;

  1952.     AVSubtitle sub;

  1953.     int ret = 0, got_frame = 0;

  1954. 

  1955.     if (dec_ctx->codec) {

  1956.         switch (dec_ctx->codec_type) {

  1957.         case AVMEDIA_TYPE_VIDEO:

  1958.             ret = avcodec_decode_video2(dec_ctx, frame, &got_frame, pkt);

  1959.             break;

  1960. 

  1961.         case AVMEDIA_TYPE_AUDIO:

  1962.             ret = avcodec_decode_audio4(dec_ctx, frame, &got_frame, pkt);

  1963.             break;

  1964. 

  1965.         case AVMEDIA_TYPE_SUBTITLE:

  1966.             ret = avcodec_decode_subtitle2(dec_ctx, &sub, &got_frame, pkt);

  1967.             break;

  1968.         }

  1969.     }

  1970. 

  1971.     if (ret < 0)

  1972.         return ret;

  1973.     ret = FFMIN(ret, pkt->size); /* guard against bogus return values */

  1974.     pkt->data += ret;

  1975.     pkt->size -= ret;

  1976.     if (got_frame) {

  1977.         int is_sub = (dec_ctx->codec_type == AVMEDIA_TYPE_SUBTITLE);

  1978.         nb_streams_frames[pkt->stream_index]++;

  1979.         if (do_show_frames)

  1980.             if (is_sub)

  1981.                 show_subtitle(w, &sub, fmt_ctx->streams[pkt->stream_index], fmt_ctx);

  1982.             else

  1983.                 show_frame(w, frame, fmt_ctx->streams[pkt->stream_index], fmt_ctx);

  1984.         if (is_sub)

  1985.             avsubtitle_free(&sub);

  1986.     }

  1987.     return got_frame;

  1988. }

  1989. 

  1990. static void log_read_interval(const ReadInterval *interval, void *log_ctx, int log_level)

  1991. {

  1992.     av_log(log_ctx, log_level, "id:%d", interval->id);

  1993. 

  1994.     if (interval->has_start) {

  1995.         av_log(log_ctx, log_level, " start:%s%s", interval->start_is_offset ? "+" : "",

  1996.                av_ts2timestr(interval->start, &AV_TIME_BASE_Q));

  1997.     } else {

  1998.         av_log(log_ctx, log_level, " start:N/A");

  1999.     }

  2000. 

  2001.     if (interval->has_end) {

  2002.         av_log(log_ctx, log_level, " end:%s", interval->end_is_offset ? "+" : "");

  2003.         if (interval->duration_frames)

  2004.             av_log(log_ctx, log_level, "#%"PRId64, interval->end);

  2005.         else

  2006.             av_log(log_ctx, log_level, "%s", av_ts2timestr(interval->end, &AV_TIME_BASE_Q));

  2007.     } else {

  2008.         av_log(log_ctx, log_level, " end:N/A");

  2009.     }

  2010. 

  2011.     av_log(log_ctx, log_level, "\n");

  2012. }

  2013. 

  2014. static int read_interval_packets(WriterContext *w, AVFormatContext *fmt_ctx,

  2015.                                  const ReadInterval *interval, int64_t *cur_ts)

  2016. {

  2017.     AVPacket pkt, pkt1;

  2018.     AVFrame *frame = NULL;

  2019.     int ret = 0, i = 0, frame_count = 0;

  2020.     int64_t start = -INT64_MAX, end = interval->end;

  2021.     int has_start = 0, has_end = interval->has_end && !interval->end_is_offset;

  2022. 

  2023.     av_init_packet(&pkt);

  2024. 

  2025.     av_log(NULL, AV_LOG_VERBOSE, "Processing read interval ");

  2026.     log_read_interval(interval, NULL, AV_LOG_VERBOSE);

  2027. 

  2028.     if (interval->has_start) {

  2029.         int64_t target;

  2030.         if (interval->start_is_offset) {

  2031.             if (*cur_ts == AV_NOPTS_VALUE) {

  2032.                 av_log(NULL, AV_LOG_ERROR,

  2033.                        "Could not seek to relative position since current "

  2034.                        "timestamp is not defined\n");

  2035.                 ret = AVERROR(EINVAL);

  2036.                 goto end;

  2037.             }

  2038.             target = *cur_ts + interval->start;

  2039.         } else {

  2040.             target = interval->start;

  2041.         }

  2042. 

  2043.         av_log(NULL, AV_LOG_VERBOSE, "Seeking to read interval start point %s\n",

  2044.                av_ts2timestr(target, &AV_TIME_BASE_Q));

  2045.         if ((ret = avformat_seek_file(fmt_ctx, -1, -INT64_MAX, target, INT64_MAX, 0)) < 0) {

  2046.             av_log(NULL, AV_LOG_ERROR, "Could not seek to position %"PRId64": %s\n",

  2047.                    interval->start, av_err2str(ret));

  2048.             goto end;

  2049.         }

  2050.     }

  2051. 

  2052.     frame = av_frame_alloc();

  2053.     if (!frame) {

  2054.         ret = AVERROR(ENOMEM);

  2055.         goto end;

  2056.     }

  2057.     while (!av_read_frame(fmt_ctx, &pkt)) {

  2058.         if (fmt_ctx->nb_streams > nb_streams) {

  2059.             REALLOCZ_ARRAY_STREAM(nb_streams_frames,  nb_streams, fmt_ctx->nb_streams);

  2060.             REALLOCZ_ARRAY_STREAM(nb_streams_packets, nb_streams, fmt_ctx->nb_streams);

  2061.             REALLOCZ_ARRAY_STREAM(selected_streams,   nb_streams, fmt_ctx->nb_streams);

  2062.             nb_streams = fmt_ctx->nb_streams;

  2063.         }

  2064.         if (selected_streams[pkt.stream_index]) {

  2065.             AVRational tb = fmt_ctx->streams[pkt.stream_index]->time_base;

  2066. 

  2067.             if (pkt.pts != AV_NOPTS_VALUE)

  2068.                 *cur_ts = av_rescale_q(pkt.pts, tb, AV_TIME_BASE_Q);

  2069. 

  2070.             if (!has_start && *cur_ts != AV_NOPTS_VALUE) {

  2071.                 start = *cur_ts;

  2072.                 has_start = 1;

  2073.             }

  2074. 

  2075.             if (has_start && !has_end && interval->end_is_offset) {

  2076.                 end = start + interval->end;

  2077.                 has_end = 1;

  2078.             }

  2079. 

  2080.             if (interval->end_is_offset && interval->duration_frames) {

  2081.                 if (frame_count >= interval->end)

  2082.                     break;

  2083.             } else if (has_end && *cur_ts != AV_NOPTS_VALUE && *cur_ts >= end) {

  2084.                 break;

  2085.             }

  2086. 

  2087.             frame_count++;

  2088.             if (do_read_packets) {

  2089.                 if (do_show_packets)

  2090.                     show_packet(w, fmt_ctx, &pkt, i++);

  2091.                 nb_streams_packets[pkt.stream_index]++;

  2092.             }

  2093.             if (do_read_frames) {

  2094.                 pkt1 = pkt;

  2095.                 while (pkt1.size && process_frame(w, fmt_ctx, frame, &pkt1) > 0);

  2096.             }

  2097.         }

  2098.         av_packet_unref(&pkt);

  2099.     }

  2100.     av_init_packet(&pkt);

  2101.     pkt.data = NULL;

  2102.     pkt.size = 0;

  2103.     //Flush remaining frames that are cached in the decoder

  2104.     for (i = 0; i < fmt_ctx->nb_streams; i++) {

  2105.         pkt.stream_index = i;

  2106.         if (do_read_frames)

  2107.             while (process_frame(w, fmt_ctx, frame, &pkt) > 0);

  2108.     }

  2109. 

  2110. end:

  2111.     av_frame_free(&frame);

  2112.     if (ret < 0) {

  2113.         av_log(NULL, AV_LOG_ERROR, "Could not read packets in interval ");

  2114.         log_read_interval(interval, NULL, AV_LOG_ERROR);

  2115.     }

  2116.     return ret;

  2117. }

  2118. 

  2119. static int read_packets(WriterContext *w, InputFile *ifile)

  2120. {

  2121.     AVFormatContext *fmt_ctx = ifile->fmt_ctx;

  2122.     int i, ret = 0;

  2123.     int64_t cur_ts = fmt_ctx->start_time;

  2124. 

  2125.     if (read_intervals_nb == 0) {

  2126.         ReadInterval interval = (ReadInterval) { .has_start = 0, .has_end = 0 };

  2127.         ret = read_interval_packets(w, fmt_ctx, &interval, &cur_ts);

  2128.     } else {

  2129.         for (i = 0; i < read_intervals_nb; i++) {

  2130.             ret = read_interval_packets(w, fmt_ctx, &read_intervals[i], &cur_ts);

  2131.             if (ret < 0)

  2132.                 break;

  2133.         }

  2134.     }

  2135. 

  2136.     return ret;

  2137. }

  2138. 

  2139. static int show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_idx, int in_program)

  2140. {

  2141.     AVStream *stream = fmt_ctx->streams[stream_idx];

  2142.     AVCodecContext *dec_ctx;

  2143.     char val_str[128];

  2144.     const char *s;

  2145.     AVRational sar, dar;

  2146.     AVBPrint pbuf;

  2147.     const AVCodecDescriptor *cd;

  2148.     int ret = 0;

  2149.     const char *profile = NULL;

  2150. 

  2151.     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);

  2152. 

  2153.     writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM : SECTION_ID_STREAM);

  2154. 

  2155.     print_int("index", stream->index);

  2156. 

  2157.     dec_ctx = stream->codec;

  2158.     if (cd = avcodec_descriptor_get(stream->codec->codec_id)) {

  2159.         print_str("codec_name", cd->name);

  2160.         if (!do_bitexact) {

  2161.             print_str("codec_long_name",

  2162.                       cd->long_name ? cd->long_name : "unknown");

  2163.         }

  2164.     } else {

  2165.         print_str_opt("codec_name", "unknown");

  2166.         if (!do_bitexact) {

  2167.             print_str_opt("codec_long_name", "unknown");

  2168.         }

  2169.     }

  2170. 

  2171.     if (!do_bitexact && (profile = avcodec_profile_name(dec_ctx->codec_id, dec_ctx->profile)))

  2172.         print_str("profile", profile);

  2173.     else {

  2174.         if (dec_ctx->profile != FF_PROFILE_UNKNOWN) {

  2175.             char profile_num[12];

  2176.             snprintf(profile_num, sizeof(profile_num), "%d", dec_ctx->profile);

  2177.             print_str("profile", profile_num);

  2178.         } else

  2179.             print_str_opt("profile", "unknown");

  2180.     }

  2181. 

  2182.     s = av_get_media_type_string(dec_ctx->codec_type);

  2183.     if (s) print_str    ("codec_type", s);

  2184.     else   print_str_opt("codec_type", "unknown");

  2185.     print_q("codec_time_base", dec_ctx->time_base, '/');

  2186. 

  2187.     /* print AVI/FourCC tag */

  2188.     av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);

  2189.     print_str("codec_tag_string",    val_str);

  2190.     print_fmt("codec_tag", "0x%04x", dec_ctx->codec_tag);

  2191. 

  2192.     switch (dec_ctx->codec_type) {

  2193.     case AVMEDIA_TYPE_VIDEO:

  2194.         print_int("width",        dec_ctx->width);

  2195.         print_int("height",       dec_ctx->height);

  2196.         print_int("coded_width",  dec_ctx->coded_width);

  2197.         print_int("coded_height", dec_ctx->coded_height);

  2198.         print_int("has_b_frames", dec_ctx->has_b_frames);

  2199.         sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, NULL);

  2200.         if (sar.den) {

  2201.             print_q("sample_aspect_ratio", sar, ':');

  2202.             av_reduce(&dar.num, &dar.den,

  2203.                       dec_ctx->width  * sar.num,

  2204.                       dec_ctx->height * sar.den,

  2205.                       1024*1024);

  2206.             print_q("display_aspect_ratio", dar, ':');

  2207.         } else {

  2208.             print_str_opt("sample_aspect_ratio", "N/A");

  2209.             print_str_opt("display_aspect_ratio", "N/A");

  2210.         }

  2211.         s = av_get_pix_fmt_name(dec_ctx->pix_fmt);

  2212.         if (s) print_str    ("pix_fmt", s);

  2213.         else   print_str_opt("pix_fmt", "unknown");

  2214.         print_int("level",   dec_ctx->level);

  2215.         if (dec_ctx->color_range != AVCOL_RANGE_UNSPECIFIED)

  2216.             print_str    ("color_range", av_color_range_name(dec_ctx->color_range));

  2217.         else

  2218.             print_str_opt("color_range", "N/A");

  2219. 

  2220.         s = av_get_colorspace_name(dec_ctx->colorspace);

  2221.         if (s) print_str    ("color_space", s);

  2222.         else   print_str_opt("color_space", "unknown");

  2223. 

  2224.         if (dec_ctx->color_trc != AVCOL_TRC_UNSPECIFIED)

  2225.             print_str("color_transfer", av_color_transfer_name(dec_ctx->color_trc));

  2226.         else

  2227.             print_str_opt("color_transfer", av_color_transfer_name(dec_ctx->color_trc));

  2228. 

  2229.         if (dec_ctx->color_primaries != AVCOL_PRI_UNSPECIFIED)

  2230.             print_str("color_primaries", av_color_primaries_name(dec_ctx->color_primaries));

  2231.         else

  2232.             print_str_opt("color_primaries", av_color_primaries_name(dec_ctx->color_primaries));

  2233. 

  2234.         if (dec_ctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)

  2235.             print_str("chroma_location", av_chroma_location_name(dec_ctx->chroma_sample_location));

  2236.         else

  2237.             print_str_opt("chroma_location", av_chroma_location_name(dec_ctx->chroma_sample_location));

  2238. 

  2239. #if FF_API_PRIVATE_OPT

  2240.         if (dec_ctx->timecode_frame_start >= 0) {

  2241.             char tcbuf[AV_TIMECODE_STR_SIZE];

  2242.             av_timecode_make_mpeg_tc_string(tcbuf, dec_ctx->timecode_frame_start);

  2243.             print_str("timecode", tcbuf);

  2244.         } else {

  2245.             print_str_opt("timecode", "N/A");

  2246.         }

  2247. #endif

  2248.         print_int("refs", dec_ctx->refs);

  2249.         break;

  2250. 

  2251.     case AVMEDIA_TYPE_AUDIO:

  2252.         s = av_get_sample_fmt_name(dec_ctx->sample_fmt);

  2253.         if (s) print_str    ("sample_fmt", s);

  2254.         else   print_str_opt("sample_fmt", "unknown");

  2255.         print_val("sample_rate",     dec_ctx->sample_rate, unit_hertz_str);

  2256.         print_int("channels",        dec_ctx->channels);

  2257. 

  2258.         if (dec_ctx->channel_layout) {

  2259.             av_bprint_clear(&pbuf);

  2260.             av_bprint_channel_layout(&pbuf, dec_ctx->channels, dec_ctx->channel_layout);

  2261.             print_str    ("channel_layout", pbuf.str);

  2262.         } else {

  2263.             print_str_opt("channel_layout", "unknown");

  2264.         }

  2265. 

  2266.         print_int("bits_per_sample", av_get_bits_per_sample(dec_ctx->codec_id));

  2267.         break;

  2268. 

  2269.     case AVMEDIA_TYPE_SUBTITLE:

  2270.         if (dec_ctx->width)

  2271.             print_int("width",       dec_ctx->width);

  2272.         else

  2273.             print_str_opt("width",   "N/A");

  2274.         if (dec_ctx->height)

  2275.             print_int("height",      dec_ctx->height);

  2276.         else

  2277.             print_str_opt("height",  "N/A");

  2278.         break;

  2279.     }

  2280. 

  2281.     if (dec_ctx->codec && dec_ctx->codec->priv_class && show_private_data) {

  2282.         const AVOption *opt = NULL;

  2283.         while (opt = av_opt_next(dec_ctx->priv_data,opt)) {

  2284.             uint8_t *str;

  2285.             if (opt->flags) continue;

  2286.             if (av_opt_get(dec_ctx->priv_data, opt->name, 0, &str) >= 0) {

  2287.                 print_str(opt->name, str);

  2288.                 av_free(str);

  2289.             }

  2290.         }

  2291.     }

  2292. 

  2293.     if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS) print_fmt    ("id", "0x%x", stream->id);

  2294.     else                                          print_str_opt("id", "N/A");

  2295.     print_q("r_frame_rate",   stream->r_frame_rate,   '/');

  2296.     print_q("avg_frame_rate", stream->avg_frame_rate, '/');

  2297.     print_q("time_base",      stream->time_base,      '/');

  2298.     print_ts  ("start_pts",   stream->start_time);

  2299.     print_time("start_time",  stream->start_time, &stream->time_base);

  2300.     print_ts  ("duration_ts", stream->duration);

  2301.     print_time("duration",    stream->duration, &stream->time_base);

  2302.     if (dec_ctx->bit_rate > 0) print_val    ("bit_rate", dec_ctx->bit_rate, unit_bit_per_second_str);

  2303.     else                       print_str_opt("bit_rate", "N/A");

  2304.     if (dec_ctx->rc_max_rate > 0) print_val ("max_bit_rate", dec_ctx->rc_max_rate, unit_bit_per_second_str);

  2305.     else                       print_str_opt("max_bit_rate", "N/A");

  2306.     if (dec_ctx->bits_per_raw_sample > 0) print_fmt("bits_per_raw_sample", "%d", dec_ctx->bits_per_raw_sample);

  2307.     else                       print_str_opt("bits_per_raw_sample", "N/A");

  2308.     if (stream->nb_frames) print_fmt    ("nb_frames", "%"PRId64, stream->nb_frames);

  2309.     else                   print_str_opt("nb_frames", "N/A");

  2310.     if (nb_streams_frames[stream_idx])  print_fmt    ("nb_read_frames", "%"PRIu64, nb_streams_frames[stream_idx]);

  2311.     else                                print_str_opt("nb_read_frames", "N/A");

  2312.     if (nb_streams_packets[stream_idx]) print_fmt    ("nb_read_packets", "%"PRIu64, nb_streams_packets[stream_idx]);

  2313.     else                                print_str_opt("nb_read_packets", "N/A");

  2314.     if (do_show_data)

  2315.         writer_print_data(w, "extradata", dec_ctx->extradata,

  2316.                                           dec_ctx->extradata_size);

  2317.     writer_print_data_hash(w, "extradata_hash", dec_ctx->extradata,

  2318.                                                 dec_ctx->extradata_size);

  2319. 

  2320.     /* Print disposition information */

  2321. #define PRINT_DISPOSITION(flagname, name) do {                                \

  2322.         print_int(name, !!(stream->disposition & AV_DISPOSITION_##flagname)); \

  2323.     } while (0)

  2324. 

  2325.     if (do_show_stream_disposition) {

  2326.     writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM_DISPOSITION : SECTION_ID_STREAM_DISPOSITION);

  2327.     PRINT_DISPOSITION(DEFAULT,          "default");

  2328.     PRINT_DISPOSITION(DUB,              "dub");

  2329.     PRINT_DISPOSITION(ORIGINAL,         "original");

  2330.     PRINT_DISPOSITION(COMMENT,          "comment");

  2331.     PRINT_DISPOSITION(LYRICS,           "lyrics");

  2332.     PRINT_DISPOSITION(KARAOKE,          "karaoke");

  2333.     PRINT_DISPOSITION(FORCED,           "forced");

  2334.     PRINT_DISPOSITION(HEARING_IMPAIRED, "hearing_impaired");

  2335.     PRINT_DISPOSITION(VISUAL_IMPAIRED,  "visual_impaired");

  2336.     PRINT_DISPOSITION(CLEAN_EFFECTS,    "clean_effects");

  2337.     PRINT_DISPOSITION(ATTACHED_PIC,     "attached_pic");

  2338.     writer_print_section_footer(w);

  2339.     }

  2340. 

  2341.     if (do_show_stream_tags)

  2342.         ret = show_tags(w, stream->metadata, in_program ? SECTION_ID_PROGRAM_STREAM_TAGS : SECTION_ID_STREAM_TAGS);

  2343. 

  2344.     if (stream->nb_side_data) {

  2345.         int i;

  2346.         writer_print_section_header(w, SECTION_ID_STREAM_SIDE_DATA_LIST);

  2347.         for (i = 0; i < stream->nb_side_data; i++) {

  2348.             AVPacketSideData *sd = &stream->side_data[i];

  2349.             const char *name = av_packet_side_data_name(sd->type);

  2350. 

  2351.             writer_print_section_header(w, SECTION_ID_STREAM_SIDE_DATA);

  2352.             print_str("side_data_type", name ? name : "unknown");

  2353.             print_int("side_data_size", sd->size);

  2354.             if (sd->type == AV_PKT_DATA_DISPLAYMATRIX && sd->size >= 9*4) {

  2355.                 writer_print_integers(w, "displaymatrix", sd->data, 9, " %11d", 3, 4, 1);

  2356.                 print_int("rotation", av_display_rotation_get((int32_t *)sd->data));

  2357.             }

  2358.             writer_print_section_footer(w);

  2359.         }

  2360.         writer_print_section_footer(w);

  2361.     }

  2362. 

  2363.     writer_print_section_footer(w);

  2364.     av_bprint_finalize(&pbuf, NULL);

  2365.     fflush(stdout);

  2366. 

  2367.     return ret;

  2368. }

  2369. 

  2370. static int show_streams(WriterContext *w, InputFile *ifile)

  2371. {

  2372.     AVFormatContext *fmt_ctx = ifile->fmt_ctx;

  2373.     int i, ret = 0;

  2374. 

  2375.     writer_print_section_header(w, SECTION_ID_STREAMS);

  2376.     for (i = 0; i < fmt_ctx->nb_streams; i++)

  2377.         if (selected_streams[i]) {

  2378.             ret = show_stream(w, fmt_ctx, i, 0);

  2379.             if (ret < 0)

  2380.                 break;

  2381.         }

  2382.     writer_print_section_footer(w);

  2383. 

  2384.     return ret;

  2385. }

  2386. 

  2387. static int show_program(WriterContext *w, AVFormatContext *fmt_ctx, AVProgram *program)

  2388. {

  2389.     int i, ret = 0;

  2390. 

  2391.     writer_print_section_header(w, SECTION_ID_PROGRAM);

  2392.     print_int("program_id", program->id);

  2393.     print_int("program_num", program->program_num);

  2394.     print_int("nb_streams", program->nb_stream_indexes);

  2395.     print_int("pmt_pid", program->pmt_pid);

  2396.     print_int("pcr_pid", program->pcr_pid);

  2397.     print_ts("start_pts", program->start_time);

  2398.     print_time("start_time", program->start_time, &AV_TIME_BASE_Q);

  2399.     print_ts("end_pts", program->end_time);

  2400.     print_time("end_time", program->end_time, &AV_TIME_BASE_Q);

  2401.     if (do_show_program_tags)

  2402.         ret = show_tags(w, program->metadata, SECTION_ID_PROGRAM_TAGS);

  2403.     if (ret < 0)

  2404.         goto end;

  2405. 

  2406.     writer_print_section_header(w, SECTION_ID_PROGRAM_STREAMS);

  2407.     for (i = 0; i < program->nb_stream_indexes; i++) {

  2408.         if (selected_streams[program->stream_index[i]]) {

  2409.             ret = show_stream(w, fmt_ctx, program->stream_index[i], 1);

  2410.             if (ret < 0)

  2411.                 break;

  2412.         }

  2413.     }

  2414.     writer_print_section_footer(w);

  2415. 

  2416. end:

  2417.     writer_print_section_footer(w);

  2418.     return ret;

  2419. }

  2420. 

  2421. static int show_programs(WriterContext *w, InputFile *ifile)

  2422. {

  2423.     AVFormatContext *fmt_ctx = ifile->fmt_ctx;

  2424.     int i, ret = 0;

  2425. 

  2426.     writer_print_section_header(w, SECTION_ID_PROGRAMS);

  2427.     for (i = 0; i < fmt_ctx->nb_programs; i++) {

  2428.         AVProgram *program = fmt_ctx->programs[i];

  2429.         if (!program)

  2430.             continue;

  2431.         ret = show_program(w, fmt_ctx, program);

  2432.         if (ret < 0)

  2433.             break;

  2434.     }

  2435.     writer_print_section_footer(w);

  2436.     return ret;

  2437. }

  2438. 

  2439. static int show_chapters(WriterContext *w, InputFile *ifile)

  2440. {

  2441.     AVFormatContext *fmt_ctx = ifile->fmt_ctx;

  2442.     int i, ret = 0;

  2443. 

  2444.     writer_print_section_header(w, SECTION_ID_CHAPTERS);

  2445.     for (i = 0; i < fmt_ctx->nb_chapters; i++) {

  2446.         AVChapter *chapter = fmt_ctx->chapters[i];

  2447. 

  2448.         writer_print_section_header(w, SECTION_ID_CHAPTER);

  2449.         print_int("id", chapter->id);

  2450.         print_q  ("time_base", chapter->time_base, '/');

  2451.         print_int("start", chapter->start);

  2452.         print_time("start_time", chapter->start, &chapter->time_base);

  2453.         print_int("end", chapter->end);

  2454.         print_time("end_time", chapter->end, &chapter->time_base);

  2455.         if (do_show_chapter_tags)

  2456.             ret = show_tags(w, chapter->metadata, SECTION_ID_CHAPTER_TAGS);

  2457.         writer_print_section_footer(w);

  2458.     }

  2459.     writer_print_section_footer(w);

  2460. 

  2461.     return ret;

  2462. }

  2463. 

  2464. static int show_format(WriterContext *w, InputFile *ifile)

  2465. {

  2466.     AVFormatContext *fmt_ctx = ifile->fmt_ctx;

  2467.     char val_str[128];

  2468.     int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;

  2469.     int ret = 0;

  2470. 

  2471.     writer_print_section_header(w, SECTION_ID_FORMAT);

  2472.     print_str_validate("filename", fmt_ctx->filename);

  2473.     print_int("nb_streams",       fmt_ctx->nb_streams);

  2474.     print_int("nb_programs",      fmt_ctx->nb_programs);

  2475.     print_str("format_name",      fmt_ctx->iformat->name);

  2476.     if (!do_bitexact) {

  2477.         if (fmt_ctx->iformat->long_name) print_str    ("format_long_name", fmt_ctx->iformat->long_name);

  2478.         else                             print_str_opt("format_long_name", "unknown");

  2479.     }

  2480.     print_time("start_time",      fmt_ctx->start_time, &AV_TIME_BASE_Q);

  2481.     print_time("duration",        fmt_ctx->duration,   &AV_TIME_BASE_Q);

  2482.     if (size >= 0) print_val    ("size", size, unit_byte_str);

  2483.     else           print_str_opt("size", "N/A");

  2484.     if (fmt_ctx->bit_rate > 0) print_val    ("bit_rate", fmt_ctx->bit_rate, unit_bit_per_second_str);

  2485.     else                       print_str_opt("bit_rate", "N/A");

  2486.     print_int("probe_score", av_format_get_probe_score(fmt_ctx));

  2487.     if (do_show_format_tags)

  2488.         ret = show_tags(w, fmt_ctx->metadata, SECTION_ID_FORMAT_TAGS);

  2489. 

  2490.     writer_print_section_footer(w);

  2491.     fflush(stdout);

  2492.     return ret;

  2493. }

  2494. 

  2495. static void show_error(WriterContext *w, int err)

  2496. {

  2497.     char errbuf[128];

  2498.     const char *errbuf_ptr = errbuf;

  2499. 

  2500.     if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)

  2501.         errbuf_ptr = strerror(AVUNERROR(err));

  2502. 

  2503.     writer_print_section_header(w, SECTION_ID_ERROR);

  2504.     print_int("code", err);

  2505.     print_str("string", errbuf_ptr);

  2506.     writer_print_section_footer(w);

  2507. }

  2508. 

  2509. static int open_input_file(InputFile *ifile, const char *filename)

  2510. {

  2511.     int err, i, orig_nb_streams;

  2512.     AVFormatContext *fmt_ctx = NULL;

  2513.     AVDictionaryEntry *t;

  2514.     AVDictionary **opts;

  2515.     int scan_all_pmts_set = 0;

  2516. 

  2517.     if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {

  2518.         av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);

  2519.         scan_all_pmts_set = 1;

  2520.     }

  2521.     if ((err = avformat_open_input(&fmt_ctx, filename,

  2522.                                    iformat, &format_opts)) < 0) {

  2523.         print_error(filename, err);

  2524.         return err;

  2525.     }

  2526.     ifile->fmt_ctx = fmt_ctx;

  2527.     if (scan_all_pmts_set)

  2528.         av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);

  2529.     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {

  2530.         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);

  2531.         return AVERROR_OPTION_NOT_FOUND;

  2532.     }

  2533. 

  2534.     /* fill the streams in the format context */

  2535.     opts = setup_find_stream_info_opts(fmt_ctx, codec_opts);

  2536.     orig_nb_streams = fmt_ctx->nb_streams;

  2537. 

  2538.     err = avformat_find_stream_info(fmt_ctx, opts);

  2539. 

  2540.     for (i = 0; i < orig_nb_streams; i++)

  2541.         av_dict_free(&opts[i]);

  2542.     av_freep(&opts);

  2543. 

  2544.     if (err < 0) {

  2545.         print_error(filename, err);

  2546.         return err;

  2547.     }

  2548. 

  2549.     av_dump_format(fmt_ctx, 0, filename, 0);

  2550. 

  2551.     ifile->streams = av_mallocz_array(fmt_ctx->nb_streams,

  2552.                                       sizeof(*ifile->streams));

  2553.     if (!ifile->streams)

  2554.         exit(1);

  2555.     ifile->nb_streams = fmt_ctx->nb_streams;

  2556. 

  2557.     /* bind a decoder to each input stream */

  2558.     for (i = 0; i < fmt_ctx->nb_streams; i++) {

  2559.         InputStream *ist = &ifile->streams[i];

  2560.         AVStream *stream = fmt_ctx->streams[i];

  2561.         AVCodec *codec;

  2562. 

  2563.         ist->st = stream;

  2564. 

  2565.         if (stream->codec->codec_id == AV_CODEC_ID_PROBE) {

  2566.             av_log(NULL, AV_LOG_WARNING,

  2567.                    "Failed to probe codec for input stream %d\n",

  2568.                     stream->index);

  2569.         } else if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {

  2570.             av_log(NULL, AV_LOG_WARNING,

  2571.                     "Unsupported codec with id %d for input stream %d\n",

  2572.                     stream->codec->codec_id, stream->index);

  2573.         } else {

  2574.             AVDictionary *opts = filter_codec_opts(codec_opts, stream->codec->codec_id,

  2575.                                                    fmt_ctx, stream, codec);

  2576.             if (avcodec_open2(stream->codec, codec, &opts) < 0) {

  2577.                 av_log(NULL, AV_LOG_WARNING, "Could not open codec for input stream %d\n",

  2578.                        stream->index);

  2579.             }

  2580.             if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {

  2581.                 av_log(NULL, AV_LOG_ERROR, "Option %s for input stream %d not found\n",

  2582.                        t->key, stream->index);

  2583.                 return AVERROR_OPTION_NOT_FOUND;

  2584.             }

  2585.         }

  2586.     }

  2587. 

  2588.     ifile->fmt_ctx = fmt_ctx;

  2589.     return 0;

  2590. }

  2591. 

  2592. static void close_input_file(InputFile *ifile)

  2593. {

  2594.     int i;

  2595.     AVFormatContext *fmt_ctx = ifile->fmt_ctx;

  2596. 

  2597.     /* close decoder for each stream */

  2598.     for (i = 0; i < fmt_ctx->nb_streams; i++)

  2599.         if (fmt_ctx->streams[i]->codec->codec_id != AV_CODEC_ID_NONE)

  2600.             avcodec_close(fmt_ctx->streams[i]->codec);

  2601. 

  2602.     av_freep(&ifile->streams);

  2603.     ifile->nb_streams = 0;

  2604. 

  2605.     avformat_close_input(&ifile->fmt_ctx);

  2606. }

  2607. 

  2608. static int probe_file(WriterContext *wctx, const char *filename)

  2609. {

  2610.     InputFile ifile = { 0 };

  2611.     int ret, i;

  2612.     int section_id;

  2613. 

  2614.     do_read_frames = do_show_frames || do_count_frames;

  2615.     do_read_packets = do_show_packets || do_count_packets;

  2616. 

  2617.     ret = open_input_file(&ifile, filename);

  2618.     if (ret < 0)

  2619.         goto end;

  2620. 

  2621. #define CHECK_END if (ret < 0) goto end

  2622. 

  2623.     nb_streams = ifile.fmt_ctx->nb_streams;

  2624.     REALLOCZ_ARRAY_STREAM(nb_streams_frames,0,ifile.fmt_ctx->nb_streams);

  2625.     REALLOCZ_ARRAY_STREAM(nb_streams_packets,0,ifile.fmt_ctx->nb_streams);

  2626.     REALLOCZ_ARRAY_STREAM(selected_streams,0,ifile.fmt_ctx->nb_streams);

  2627. 

  2628.     for (i = 0; i < ifile.fmt_ctx->nb_streams; i++) {

  2629.         if (stream_specifier) {

  2630.             ret = avformat_match_stream_specifier(ifile.fmt_ctx,

  2631.                                                   ifile.fmt_ctx->streams[i],

  2632.                                                   stream_specifier);

  2633.             CHECK_END;

  2634.             else

  2635.                 selected_streams[i] = ret;

  2636.             ret = 0;

  2637.         } else {

  2638.             selected_streams[i] = 1;

  2639.         }

  2640.     }

  2641. 

  2642.     if (do_read_frames || do_read_packets) {

  2643.         if (do_show_frames && do_show_packets &&

  2644.             wctx->writer->flags & WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER)

  2645.             section_id = SECTION_ID_PACKETS_AND_FRAMES;

  2646.         else if (do_show_packets && !do_show_frames)

  2647.             section_id = SECTION_ID_PACKETS;

  2648.         else // (!do_show_packets && do_show_frames)

  2649.             section_id = SECTION_ID_FRAMES;

  2650.         if (do_show_frames || do_show_packets)

  2651.             writer_print_section_header(wctx, section_id);

  2652.         ret = read_packets(wctx, &ifile);

  2653.         if (do_show_frames || do_show_packets)

  2654.             writer_print_section_footer(wctx);

  2655.         CHECK_END;

  2656.     }

  2657. 

  2658.     if (do_show_programs) {

  2659.         ret = show_programs(wctx, &ifile);

  2660.         CHECK_END;

  2661.     }

  2662. 

  2663.     if (do_show_streams) {

  2664.         ret = show_streams(wctx, &ifile);

  2665.         CHECK_END;

  2666.     }

  2667.     if (do_show_chapters) {

  2668.         ret = show_chapters(wctx, &ifile);

  2669.         CHECK_END;

  2670.     }

  2671.     if (do_show_format) {

  2672.         ret = show_format(wctx, &ifile);

  2673.         CHECK_END;

  2674.     }

  2675. 

  2676. end:

  2677.     if (ifile.fmt_ctx)

  2678.         close_input_file(&ifile);

  2679.     av_freep(&nb_streams_frames);

  2680.     av_freep(&nb_streams_packets);

  2681.     av_freep(&selected_streams);

  2682. 

  2683.     return ret;

  2684. }

  2685. 

  2686. static void show_usage(void)

  2687. {

  2688.     av_log(NULL, AV_LOG_INFO, "Simple multimedia streams analyzer\n");

  2689.     av_log(NULL, AV_LOG_INFO, "usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);

  2690.     av_log(NULL, AV_LOG_INFO, "\n");

  2691. }

  2692. 

  2693. static void ffprobe_show_program_version(WriterContext *w)

  2694. {

  2695.     AVBPrint pbuf;

  2696.     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);

  2697. 

  2698.     writer_print_section_header(w, SECTION_ID_PROGRAM_VERSION);

  2699.     print_str("version", FFMPEG_VERSION);

  2700.     print_fmt("copyright", "Copyright (c) %d-%d the FFmpeg developers",

  2701.               program_birth_year, CONFIG_THIS_YEAR);

  2702.     print_str("compiler_ident", CC_IDENT);

  2703.     print_str("configuration", FFMPEG_CONFIGURATION);

  2704.     writer_print_section_footer(w);

  2705. 

  2706.     av_bprint_finalize(&pbuf, NULL);

  2707. }

  2708. 

  2709. #define SHOW_LIB_VERSION(libname, LIBNAME)                              \

  2710.     do {                                                                \

  2711.         if (CONFIG_##LIBNAME) {                                         \

  2712.             unsigned int version = libname##_version();                 \

  2713.             writer_print_section_header(w, SECTION_ID_LIBRARY_VERSION); \

  2714.             print_str("name",    "lib" #libname);                       \

  2715.             print_int("major",   LIB##LIBNAME##_VERSION_MAJOR);         \

  2716.             print_int("minor",   LIB##LIBNAME##_VERSION_MINOR);         \

  2717.             print_int("micro",   LIB##LIBNAME##_VERSION_MICRO);         \

  2718.             print_int("version", version);                              \

  2719.             print_str("ident",   LIB##LIBNAME##_IDENT);                 \

  2720.             writer_print_section_footer(w);                             \

  2721.         }                                                               \

  2722.     } while (0)

  2723. 

  2724. static void ffprobe_show_library_versions(WriterContext *w)

  2725. {

  2726.     writer_print_section_header(w, SECTION_ID_LIBRARY_VERSIONS);

  2727.     SHOW_LIB_VERSION(avutil,     AVUTIL);

  2728.     SHOW_LIB_VERSION(avcodec,    AVCODEC);

  2729.     SHOW_LIB_VERSION(avformat,   AVFORMAT);

  2730.     SHOW_LIB_VERSION(avdevice,   AVDEVICE);

  2731.     SHOW_LIB_VERSION(avfilter,   AVFILTER);

  2732.     SHOW_LIB_VERSION(swscale,    SWSCALE);

  2733.     SHOW_LIB_VERSION(swresample, SWRESAMPLE);

  2734.     SHOW_LIB_VERSION(postproc,   POSTPROC);

  2735.     writer_print_section_footer(w);

  2736. }

  2737. 

  2738. #define PRINT_PIX_FMT_FLAG(flagname, name)                                \

  2739.     do {                                                                  \

  2740.         print_int(name, !!(pixdesc->flags & AV_PIX_FMT_FLAG_##flagname)); \

  2741.     } while (0)

  2742. 

  2743. static void ffprobe_show_pixel_formats(WriterContext *w)

  2744. {

  2745.     const AVPixFmtDescriptor *pixdesc = NULL;

  2746.     int i, n;

  2747. 

  2748.     writer_print_section_header(w, SECTION_ID_PIXEL_FORMATS);

  2749.     while (pixdesc = av_pix_fmt_desc_next(pixdesc)) {

  2750.         writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT);

  2751.         print_str("name", pixdesc->name);

  2752.         print_int("nb_components", pixdesc->nb_components);

  2753.         if ((pixdesc->nb_components >= 3) && !(pixdesc->flags & AV_PIX_FMT_FLAG_RGB)) {

  2754.             print_int    ("log2_chroma_w", pixdesc->log2_chroma_w);

  2755.             print_int    ("log2_chroma_h", pixdesc->log2_chroma_h);

  2756.         } else {

  2757.             print_str_opt("log2_chroma_w", "N/A");

  2758.             print_str_opt("log2_chroma_h", "N/A");

  2759.         }

  2760.         n = av_get_bits_per_pixel(pixdesc);

  2761.         if (n) print_int    ("bits_per_pixel", n);

  2762.         else   print_str_opt("bits_per_pixel", "N/A");

  2763.         if (do_show_pixel_format_flags) {

  2764.             writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_FLAGS);

  2765.             PRINT_PIX_FMT_FLAG(BE,        "big_endian");

  2766.             PRINT_PIX_FMT_FLAG(PAL,       "palette");

  2767.             PRINT_PIX_FMT_FLAG(BITSTREAM, "bitstream");

  2768.             PRINT_PIX_FMT_FLAG(HWACCEL,   "hwaccel");

  2769.             PRINT_PIX_FMT_FLAG(PLANAR,    "planar");

  2770.             PRINT_PIX_FMT_FLAG(RGB,       "rgb");

  2771.             PRINT_PIX_FMT_FLAG(PSEUDOPAL, "pseudopal");

  2772.             PRINT_PIX_FMT_FLAG(ALPHA,     "alpha");

  2773.             writer_print_section_footer(w);

  2774.         }

  2775.         if (do_show_pixel_format_components && (pixdesc->nb_components > 0)) {

  2776.             writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_COMPONENTS);

  2777.             for (i = 0; i < pixdesc->nb_components; i++) {

  2778.                 writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_COMPONENT);

  2779.                 print_int("index", i + 1);

  2780.                 print_int("bit_depth", pixdesc->comp[i].depth);

  2781.                 writer_print_section_footer(w);

  2782.             }

  2783.             writer_print_section_footer(w);

  2784.         }

  2785.         writer_print_section_footer(w);

  2786.     }

  2787.     writer_print_section_footer(w);

  2788. }

  2789. 

  2790. static int opt_format(void *optctx, const char *opt, const char *arg)

  2791. {

  2792.     iformat = av_find_input_format(arg);

  2793.     if (!iformat) {

  2794.         av_log(NULL, AV_LOG_ERROR, "Unknown input format: %s\n", arg);

  2795.         return AVERROR(EINVAL);

  2796.     }

  2797.     return 0;

  2798. }

  2799. 

  2800. static inline void mark_section_show_entries(SectionID section_id,

  2801.                                              int show_all_entries, AVDictionary *entries)

  2802. {

  2803.     struct section *section = &sections[section_id];

  2804. 

  2805.     section->show_all_entries = show_all_entries;

  2806.     if (show_all_entries) {

  2807.         SectionID *id;

  2808.         for (id = section->children_ids; *id != -1; id++)

  2809.             mark_section_show_entries(*id, show_all_entries, entries);

  2810.     } else {

  2811.         av_dict_copy(&section->entries_to_show, entries, 0);

  2812.     }

  2813. }

  2814. 

  2815. static int match_section(const char *section_name,

  2816.                          int show_all_entries, AVDictionary *entries)

  2817. {

  2818.     int i, ret = 0;

  2819. 

  2820.     for (i = 0; i < FF_ARRAY_ELEMS(sections); i++) {

  2821.         const struct section *section = &sections[i];

  2822.         if (!strcmp(section_name, section->name) ||

  2823.             (section->unique_name && !strcmp(section_name, section->unique_name))) {

  2824.             av_log(NULL, AV_LOG_DEBUG,

  2825.                    "'%s' matches section with unique name '%s'\n", section_name,

  2826.                    (char *)av_x_if_null(section->unique_name, section->name));

  2827.             ret++;

  2828.             mark_section_show_entries(section->id, show_all_entries, entries);

  2829.         }

  2830.     }

  2831.     return ret;

  2832. }

  2833. 

  2834. static int opt_show_entries(void *optctx, const char *opt, const char *arg)

  2835. {

  2836.     const char *p = arg;

  2837.     int ret = 0;

  2838. 

  2839.     while (*p) {

  2840.         AVDictionary *entries = NULL;

  2841.         char *section_name = av_get_token(&p, "=:");

  2842.         int show_all_entries = 0;

  2843. 

  2844.         if (!section_name) {

  2845.             av_log(NULL, AV_LOG_ERROR,

  2846.                    "Missing section name for option '%s'\n", opt);

  2847.             return AVERROR(EINVAL);

  2848.         }

  2849. 

  2850.         if (*p == '=') {

  2851.             p++;

  2852.             while (*p && *p != ':') {

  2853.                 char *entry = av_get_token(&p, ",:");

  2854.                 if (!entry)

  2855.                     break;

  2856.                 av_log(NULL, AV_LOG_VERBOSE,

  2857.                        "Adding '%s' to the entries to show in section '%s'\n",

  2858.                        entry, section_name);

  2859.                 av_dict_set(&entries, entry, "", AV_DICT_DONT_STRDUP_KEY);

  2860.                 if (*p == ',')

  2861.                     p++;

  2862.             }

  2863.         } else {

  2864.             show_all_entries = 1;

  2865.         }

  2866. 

  2867.         ret = match_section(section_name, show_all_entries, entries);

  2868.         if (ret == 0) {

  2869.             av_log(NULL, AV_LOG_ERROR, "No match for section '%s'\n", section_name);

  2870.             ret = AVERROR(EINVAL);

  2871.         }

  2872.         av_dict_free(&entries);

  2873.         av_free(section_name);

  2874. 

  2875.         if (ret <= 0)

  2876.             break;

  2877.         if (*p)

  2878.             p++;

  2879.     }

  2880. 

  2881.     return ret;

  2882. }

  2883. 

  2884. static int opt_show_format_entry(void *optctx, const char *opt, const char *arg)

  2885. {

  2886.     char *buf = av_asprintf("format=%s", arg);

  2887.     int ret;

  2888. 

  2889.     if (!buf)

  2890.         return AVERROR(ENOMEM);

  2891. 

  2892.     av_log(NULL, AV_LOG_WARNING,

  2893.            "Option '%s' is deprecated, use '-show_entries format=%s' instead\n",

  2894.            opt, arg);

  2895.     ret = opt_show_entries(optctx, opt, buf);

  2896.     av_free(buf);

  2897.     return ret;

  2898. }

  2899. 

  2900. static void opt_input_file(void *optctx, const char *arg)

  2901. {

  2902.     if (input_filename) {

  2903.         av_log(NULL, AV_LOG_ERROR,

  2904.                 "Argument '%s' provided as input filename, but '%s' was already specified.\n",

  2905.                 arg, input_filename);

  2906.         exit_program(1);

  2907.     }

  2908.     if (!strcmp(arg, "-"))

  2909.         arg = "pipe:";

  2910.     input_filename = arg;

  2911. }

  2912. 

  2913. static int opt_input_file_i(void *optctx, const char *opt, const char *arg)

  2914. {

  2915.     opt_input_file(optctx, arg);

  2916.     return 0;

  2917. }

  2918. 

  2919. void show_help_default(const char *opt, const char *arg)

  2920. {

  2921.     av_log_set_callback(log_callback_help);

  2922.     show_usage();

  2923.     show_help_options(options, "Main options:", 0, 0, 0);

  2924.     printf("\n");

  2925. 

  2926.     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);

  2927. }

  2928. 

  2929. /**

  2930.  * Parse interval specification, according to the format:

  2931.  * INTERVAL ::= [START|+START_OFFSET][%[END|+END_OFFSET]]

  2932.  * INTERVALS ::= INTERVAL[,INTERVALS]

  2933. */

  2934. static int parse_read_interval(const char *interval_spec,

  2935.                                ReadInterval *interval)

  2936. {

  2937.     int ret = 0;

  2938.     char *next, *p, *spec = av_strdup(interval_spec);

  2939.     if (!spec)

  2940.         return AVERROR(ENOMEM);

  2941. 

  2942.     if (!*spec) {

  2943.         av_log(NULL, AV_LOG_ERROR, "Invalid empty interval specification\n");

  2944.         ret = AVERROR(EINVAL);

  2945.         goto end;

  2946.     }

  2947. 

  2948.     p = spec;

  2949.     next = strchr(spec, '%');

  2950.     if (next)

  2951.         *next++ = 0;

  2952. 

  2953.     /* parse first part */

  2954.     if (*p) {

  2955.         interval->has_start = 1;

  2956. 

  2957.         if (*p == '+') {

  2958.             interval->start_is_offset = 1;

  2959.             p++;

  2960.         } else {

  2961.             interval->start_is_offset = 0;

  2962.         }

  2963. 

  2964.         ret = av_parse_time(&interval->start, p, 1);

  2965.         if (ret < 0) {

  2966.             av_log(NULL, AV_LOG_ERROR, "Invalid interval start specification '%s'\n", p);

  2967.             goto end;

  2968.         }

  2969.     } else {

  2970.         interval->has_start = 0;

  2971.     }

  2972. 

  2973.     /* parse second part */

  2974.     p = next;

  2975.     if (p && *p) {

  2976.         int64_t us;

  2977.         interval->has_end = 1;

  2978. 

  2979.         if (*p == '+') {

  2980.             interval->end_is_offset = 1;

  2981.             p++;

  2982.         } else {

  2983.             interval->end_is_offset = 0;

  2984.         }

  2985. 

  2986.         if (interval->end_is_offset && *p == '#') {

  2987.             long long int lli;

  2988.             char *tail;

  2989.             interval->duration_frames = 1;

  2990.             p++;

  2991.             lli = strtoll(p, &tail, 10);

  2992.             if (*tail || lli < 0) {

  2993.                 av_log(NULL, AV_LOG_ERROR,

  2994.                        "Invalid or negative value '%s' for duration number of frames\n", p);

  2995.                 goto end;

  2996.             }

  2997.             interval->end = lli;

  2998.         } else {

  2999.             ret = av_parse_time(&us, p, 1);

  3000.             if (ret < 0) {

  3001.                 av_log(NULL, AV_LOG_ERROR, "Invalid interval end/duration specification '%s'\n", p);

  3002.                 goto end;

  3003.             }

  3004.             interval->end = us;

  3005.         }

  3006.     } else {

  3007.         interval->has_end = 0;

  3008.     }

  3009. 

  3010. end:

  3011.     av_free(spec);

  3012.     return ret;

  3013. }

  3014. 

  3015. static int parse_read_intervals(const char *intervals_spec)

  3016. {

  3017.     int ret, n, i;

  3018.     char *p, *spec = av_strdup(intervals_spec);

  3019.     if (!spec)

  3020.         return AVERROR(ENOMEM);

  3021. 

  3022.     /* preparse specification, get number of intervals */

  3023.     for (n = 0, p = spec; *p; p++)

  3024.         if (*p == ',')

  3025.             n++;

  3026.     n++;

  3027. 

  3028.     read_intervals = av_malloc_array(n, sizeof(*read_intervals));

  3029.     if (!read_intervals) {

  3030.         ret = AVERROR(ENOMEM);

  3031.         goto end;

  3032.     }

  3033.     read_intervals_nb = n;

  3034. 

  3035.     /* parse intervals */

  3036.     p = spec;

  3037.     for (i = 0; p; i++) {

  3038.         char *next;

  3039. 

  3040.         av_assert0(i < read_intervals_nb);

  3041.         next = strchr(p, ',');

  3042.         if (next)

  3043.             *next++ = 0;

  3044. 

  3045.         read_intervals[i].id = i;

  3046.         ret = parse_read_interval(p, &read_intervals[i]);

  3047.         if (ret < 0) {

  3048.             av_log(NULL, AV_LOG_ERROR, "Error parsing read interval #%d '%s'\n",

  3049.                    i, p);

  3050.             goto end;

  3051.         }

  3052.         av_log(NULL, AV_LOG_VERBOSE, "Parsed log interval ");

  3053.         log_read_interval(&read_intervals[i], NULL, AV_LOG_VERBOSE);

  3054.         p = next;

  3055.     }

  3056.     av_assert0(i == read_intervals_nb);

  3057. 

  3058. end:

  3059.     av_free(spec);

  3060.     return ret;

  3061. }

  3062. 

  3063. static int opt_read_intervals(void *optctx, const char *opt, const char *arg)

  3064. {

  3065.     return parse_read_intervals(arg);

  3066. }

  3067. 

  3068. static int opt_pretty(void *optctx, const char *opt, const char *arg)

  3069. {

  3070.     show_value_unit              = 1;

  3071.     use_value_prefix             = 1;

  3072.     use_byte_value_binary_prefix = 1;

  3073.     use_value_sexagesimal_format = 1;

  3074.     return 0;

  3075. }

  3076. 

  3077. static void print_section(SectionID id, int level)

  3078. {

  3079.     const SectionID *pid;

  3080.     const struct section *section = &sections[id];

  3081.     printf("%c%c%c",

  3082.            section->flags & SECTION_FLAG_IS_WRAPPER           ? 'W' : '.',

  3083.            section->flags & SECTION_FLAG_IS_ARRAY             ? 'A' : '.',

  3084.            section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS  ? 'V' : '.');

  3085.     printf("%*c  %s", level * 4, ' ', section->name);

  3086.     if (section->unique_name)

  3087.         printf("/%s", section->unique_name);

  3088.     printf("\n");

  3089. 

  3090.     for (pid = section->children_ids; *pid != -1; pid++)

  3091.         print_section(*pid, level+1);

  3092. }

  3093. 

  3094. static int opt_sections(void *optctx, const char *opt, const char *arg)

  3095. {

  3096.     printf("Sections:\n"

  3097.            "W.. = Section is a wrapper (contains other sections, no local entries)\n"

  3098.            ".A. = Section contains an array of elements of the same type\n"

  3099.            "..V = Section may contain a variable number of fields with variable keys\n"

  3100.            "FLAGS NAME/UNIQUE_NAME\n"

  3101.            "---\n");

  3102.     print_section(SECTION_ID_ROOT, 0);

  3103.     return 0;

  3104. }

  3105. 

  3106. static int opt_show_versions(const char *opt, const char *arg)

  3107. {

  3108.     mark_section_show_entries(SECTION_ID_PROGRAM_VERSION, 1, NULL);

  3109.     mark_section_show_entries(SECTION_ID_LIBRARY_VERSION, 1, NULL);

  3110.     return 0;

  3111. }

  3112. 

  3113. #define DEFINE_OPT_SHOW_SECTION(section, target_section_id)             \

  3114.     static int opt_show_##section(const char *opt, const char *arg)     \

  3115.     {                                                                   \

  3116.         mark_section_show_entries(SECTION_ID_##target_section_id, 1, NULL); \

  3117.         return 0;                                                       \

  3118.     }

  3119. 

  3120. DEFINE_OPT_SHOW_SECTION(chapters,         CHAPTERS)

  3121. DEFINE_OPT_SHOW_SECTION(error,            ERROR)

  3122. DEFINE_OPT_SHOW_SECTION(format,           FORMAT)

  3123. DEFINE_OPT_SHOW_SECTION(frames,           FRAMES)

  3124. DEFINE_OPT_SHOW_SECTION(library_versions, LIBRARY_VERSIONS)

  3125. DEFINE_OPT_SHOW_SECTION(packets,          PACKETS)

  3126. DEFINE_OPT_SHOW_SECTION(pixel_formats,    PIXEL_FORMATS)

  3127. DEFINE_OPT_SHOW_SECTION(program_version,  PROGRAM_VERSION)

  3128. DEFINE_OPT_SHOW_SECTION(streams,          STREAMS)

  3129. DEFINE_OPT_SHOW_SECTION(programs,         PROGRAMS)

  3130. 

  3131. static const OptionDef real_options[] = {

  3132. #include "cmdutils_common_opts.h"

  3133.     { "f", HAS_ARG, {.func_arg = opt_format}, "force format", "format" },

  3134.     { "unit", OPT_BOOL, {&show_value_unit}, "show unit of the displayed values" },

  3135.     { "prefix", OPT_BOOL, {&use_value_prefix}, "use SI prefixes for the displayed values" },

  3136.     { "byte_binary_prefix", OPT_BOOL, {&use_byte_value_binary_prefix},

  3137.       "use binary prefixes for byte units" },

  3138.     { "sexagesimal", OPT_BOOL,  {&use_value_sexagesimal_format},

  3139.       "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },

  3140.     { "pretty", 0, {.func_arg = opt_pretty},

  3141.       "prettify the format of displayed values, make it more human readable" },

  3142.     { "print_format", OPT_STRING | HAS_ARG, {(void*)&print_format},

  3143.       "set the output printing format (available formats are: default, compact, csv, flat, ini, json, xml)", "format" },

  3144.     { "of", OPT_STRING | HAS_ARG, {(void*)&print_format}, "alias for -print_format", "format" },

  3145.     { "select_streams", OPT_STRING | HAS_ARG, {(void*)&stream_specifier}, "select the specified streams", "stream_specifier" },

  3146.     { "sections", OPT_EXIT, {.func_arg = opt_sections}, "print sections structure and section information, and exit" },

  3147.     { "show_data",    OPT_BOOL, {(void*)&do_show_data}, "show packets data" },

  3148.     { "show_data_hash", OPT_STRING | HAS_ARG, {(void*)&show_data_hash}, "show packets data hash" },

  3149.     { "show_error",   0, {(void*)&opt_show_error},  "show probing error" },

  3150.     { "show_format",  0, {(void*)&opt_show_format}, "show format/container info" },

  3151.     { "show_frames",  0, {(void*)&opt_show_frames}, "show frames info" },

  3152.     { "show_format_entry", HAS_ARG, {.func_arg = opt_show_format_entry},

  3153.       "show a particular entry from the format/container info", "entry" },

  3154.     { "show_entries", HAS_ARG, {.func_arg = opt_show_entries},

  3155.       "show a set of specified entries", "entry_list" },

  3156.     { "show_packets", 0, {(void*)&opt_show_packets}, "show packets info" },

  3157.     { "show_programs", 0, {(void*)&opt_show_programs}, "show programs info" },

  3158.     { "show_streams", 0, {(void*)&opt_show_streams}, "show streams info" },

  3159.     { "show_chapters", 0, {(void*)&opt_show_chapters}, "show chapters info" },

  3160.     { "count_frames", OPT_BOOL, {(void*)&do_count_frames}, "count the number of frames per stream" },

  3161.     { "count_packets", OPT_BOOL, {(void*)&do_count_packets}, "count the number of packets per stream" },

  3162.     { "show_program_version",  0, {(void*)&opt_show_program_version},  "show ffprobe version" },

  3163.     { "show_library_versions", 0, {(void*)&opt_show_library_versions}, "show library versions" },

  3164.     { "show_versions",         0, {(void*)&opt_show_versions}, "show program and library versions" },

  3165.     { "show_pixel_formats", 0, {(void*)&opt_show_pixel_formats}, "show pixel format descriptions" },

  3166.     { "show_private_data", OPT_BOOL, {(void*)&show_private_data}, "show private data" },

  3167.     { "private",           OPT_BOOL, {(void*)&show_private_data}, "same as show_private_data" },

  3168.     { "bitexact", OPT_BOOL, {&do_bitexact}, "force bitexact output" },

  3169.     { "read_intervals", HAS_ARG, {.func_arg = opt_read_intervals}, "set read intervals", "read_intervals" },

  3170.     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {.func_arg = opt_default}, "generic catch all option", "" },

  3171.     { "i", HAS_ARG, {.func_arg = opt_input_file_i}, "read specified file", "input_file"},

  3172.     { NULL, },

  3173. };

  3174. 

  3175. static inline int check_section_show_entries(int section_id)

  3176. {

  3177.     int *id;

  3178.     struct section *section = &sections[section_id];

  3179.     if (sections[section_id].show_all_entries || sections[section_id].entries_to_show)

  3180.         return 1;

  3181.     for (id = section->children_ids; *id != -1; id++)

  3182.         if (check_section_show_entries(*id))

  3183.             return 1;

  3184.     return 0;

  3185. }

  3186. 

  3187. #define SET_DO_SHOW(id, varname) do {                                   \

  3188.         if (check_section_show_entries(SECTION_ID_##id))                \

  3189.             do_show_##varname = 1;                                      \

  3190.     } while (0)

  3191. 

  3192. int main(int argc, char **argv)

  3193. {

  3194.     const Writer *w;

  3195.     WriterContext *wctx;

  3196.     char *buf;

  3197.     char *w_name = NULL, *w_args = NULL;

  3198.     int ret, i;

  3199. 

  3200.     av_log_set_flags(AV_LOG_SKIP_REPEATED);

  3201.     register_exit(ffprobe_cleanup);

  3202. 

  3203.     options = real_options;

  3204.     parse_loglevel(argc, argv, options);

  3205.     av_register_all();

  3206.     avformat_network_init();

  3207.     init_opts();

  3208. #if CONFIG_AVDEVICE

  3209.     avdevice_register_all();

  3210. #endif

  3211. 

  3212.     show_banner(argc, argv, options);

  3213.     parse_options(NULL, argc, argv, options, opt_input_file);

  3214. 

  3215.     /* mark things to show, based on -show_entries */

  3216.     SET_DO_SHOW(CHAPTERS, chapters);

  3217.     SET_DO_SHOW(ERROR, error);

  3218.     SET_DO_SHOW(FORMAT, format);

  3219.     SET_DO_SHOW(FRAMES, frames);

  3220.     SET_DO_SHOW(LIBRARY_VERSIONS, library_versions);

  3221.     SET_DO_SHOW(PACKETS, packets);

  3222.     SET_DO_SHOW(PIXEL_FORMATS, pixel_formats);

  3223.     SET_DO_SHOW(PIXEL_FORMAT_FLAGS, pixel_format_flags);

  3224.     SET_DO_SHOW(PIXEL_FORMAT_COMPONENTS, pixel_format_components);

  3225.     SET_DO_SHOW(PROGRAM_VERSION, program_version);

  3226.     SET_DO_SHOW(PROGRAMS, programs);

  3227.     SET_DO_SHOW(STREAMS, streams);

  3228.     SET_DO_SHOW(STREAM_DISPOSITION, stream_disposition);

  3229.     SET_DO_SHOW(PROGRAM_STREAM_DISPOSITION, stream_disposition);

  3230. 

  3231.     SET_DO_SHOW(CHAPTER_TAGS, chapter_tags);

  3232.     SET_DO_SHOW(FORMAT_TAGS, format_tags);

  3233.     SET_DO_SHOW(FRAME_TAGS, frame_tags);

  3234.     SET_DO_SHOW(PROGRAM_TAGS, program_tags);

  3235.     SET_DO_SHOW(STREAM_TAGS, stream_tags);

  3236.     SET_DO_SHOW(PACKET_TAGS, packet_tags);

  3237. 

  3238.     if (do_bitexact && (do_show_program_version || do_show_library_versions)) {

  3239.         av_log(NULL, AV_LOG_ERROR,

  3240.                "-bitexact and -show_program_version or -show_library_versions "

  3241.                "options are incompatible\n");

  3242.         ret = AVERROR(EINVAL);

  3243.         goto end;

  3244.     }

  3245. 

  3246.     writer_register_all();

  3247. 

  3248.     if (!print_format)

  3249.         print_format = av_strdup("default");

  3250.     if (!print_format) {

  3251.         ret = AVERROR(ENOMEM);

  3252.         goto end;

  3253.     }

  3254.     w_name = av_strtok(print_format, "=", &buf);

  3255.     w_args = buf;

  3256. 

  3257.     if (show_data_hash) {

  3258.         if ((ret = av_hash_alloc(&hash, show_data_hash)) < 0) {

  3259.             if (ret == AVERROR(EINVAL)) {

  3260.                 const char *n;

  3261.                 av_log(NULL, AV_LOG_ERROR,

  3262.                        "Unknown hash algorithm '%s'\nKnown algorithms:",

  3263.                        show_data_hash);

  3264.                 for (i = 0; (n = av_hash_names(i)); i++)

  3265.                     av_log(NULL, AV_LOG_ERROR, " %s", n);

  3266.                 av_log(NULL, AV_LOG_ERROR, "\n");

  3267.             }

  3268.             goto end;

  3269.         }

  3270.     }

  3271. 

  3272.     w = writer_get_by_name(w_name);

  3273.     if (!w) {

  3274.         av_log(NULL, AV_LOG_ERROR, "Unknown output format with name '%s'\n", w_name);

  3275.         ret = AVERROR(EINVAL);

  3276.         goto end;

  3277.     }

  3278. 

  3279.     if ((ret = writer_open(&wctx, w, w_args,

  3280.                            sections, FF_ARRAY_ELEMS(sections))) >= 0) {

  3281.         if (w == &xml_writer)

  3282.             wctx->string_validation_utf8_flags |= AV_UTF8_FLAG_EXCLUDE_XML_INVALID_CONTROL_CODES;

  3283. 

  3284.         writer_print_section_header(wctx, SECTION_ID_ROOT);

  3285. 

  3286.         if (do_show_program_version)

  3287.             ffprobe_show_program_version(wctx);

  3288.         if (do_show_library_versions)

  3289.             ffprobe_show_library_versions(wctx);

  3290.         if (do_show_pixel_formats)

  3291.             ffprobe_show_pixel_formats(wctx);

  3292. 

  3293.         if (!input_filename &&

  3294.             ((do_show_format || do_show_programs || do_show_streams || do_show_chapters || do_show_packets || do_show_error) ||

  3295.              (!do_show_program_version && !do_show_library_versions && !do_show_pixel_formats))) {

  3296.             show_usage();

  3297.             av_log(NULL, AV_LOG_ERROR, "You have to specify one input file.\n");

  3298.             av_log(NULL, AV_LOG_ERROR, "Use -h to get full help or, even better, run 'man %s'.\n", program_name);

  3299.             ret = AVERROR(EINVAL);

  3300.         } else if (input_filename) {

  3301.             ret = probe_file(wctx, input_filename);

  3302.             if (ret < 0 && do_show_error)

  3303.                 show_error(wctx, ret);

  3304.         }

  3305. 

  3306.         writer_print_section_footer(wctx);

  3307.         writer_close(&wctx);

  3308.     }

  3309. 

  3310. end:

  3311.     av_freep(&print_format);

  3312.     av_freep(&read_intervals);

  3313.     av_hash_freep(&hash);

  3314. 

  3315.     uninit_opts();

  3316.     for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)

  3317.         av_dict_free(&(sections[i].entries_to_show));

  3318. 

  3319.     avformat_network_deinit();

  3320. 

  3321.     return ret < 0;

  3322. }