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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. const char program_name[] = "ffprobe";

  53. const int program_birth_year = 2007;

  54. 

  55. static int do_bitexact = 0;

  56. static int do_count_frames = 0;

  57. static int do_count_packets = 0;

  58. static int do_read_frames  = 0;

  59. static int do_read_packets = 0;

  60. static int do_show_chapters = 0;

  61. static int do_show_error   = 0;

  62. static int do_show_format  = 0;

  63. static int do_show_frames  = 0;

  64. static int do_show_packets = 0;

  65. static int do_show_programs = 0;

  66. static int do_show_streams = 0;

  67. static int do_show_stream_disposition = 0;

  68. static int do_show_data    = 0;

  69. static int do_show_program_version  = 0;

  70. static int do_show_library_versions = 0;

  71. static int do_show_pixel_formats = 0;

  72. static int do_show_pixel_format_flags = 0;

  73. static int do_show_pixel_format_components = 0;

  74. 

  75. static int do_show_chapter_tags = 0;

  76. static int do_show_format_tags = 0;

  77. static int do_show_frame_tags = 0;

  78. static int do_show_program_tags = 0;

  79. static int do_show_stream_tags = 0;

  80. static int do_show_packet_tags = 0;

  81. 

  82. static int show_value_unit              = 0;

  83. static int use_value_prefix             = 0;

  84. static int use_byte_value_binary_prefix = 0;

  85. static int use_value_sexagesimal_format = 0;

  86. static int show_private_data            = 1;

  87. 

  88. static char *print_format;

  89. static char *stream_specifier;

  90. static char *show_data_hash;

  91. 

  92. typedef struct ReadInterval {

  93.     int id;             ///< identifier

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

  95.     int has_start, has_end;

  96.     int start_is_offset, end_is_offset;

  97.     int duration_frames;

  98. } ReadInterval;

  99. 

  100. static ReadInterval *read_intervals;

  101. static int read_intervals_nb = 0;

  102. 

  103. /* section structure definition */

  104. 

  105. #define SECTION_MAX_NB_CHILDREN 10

  106. 

  107. struct section {

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

  109.     const char *name;

  110. 

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

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

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

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

  115.     int flags;

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

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

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

  119.     AVDictionary *entries_to_show;

  120.     int show_all_entries;

  121. };

  122. 

  123. typedef enum {

  124.     SECTION_ID_NONE = -1,

  125.     SECTION_ID_CHAPTER,

  126.     SECTION_ID_CHAPTER_TAGS,

  127.     SECTION_ID_CHAPTERS,

  128.     SECTION_ID_ERROR,

  129.     SECTION_ID_FORMAT,

  130.     SECTION_ID_FORMAT_TAGS,

  131.     SECTION_ID_FRAME,

  132.     SECTION_ID_FRAMES,

  133.     SECTION_ID_FRAME_TAGS,

  134.     SECTION_ID_FRAME_SIDE_DATA_LIST,

  135.     SECTION_ID_FRAME_SIDE_DATA,

  136.     SECTION_ID_LIBRARY_VERSION,

  137.     SECTION_ID_LIBRARY_VERSIONS,

  138.     SECTION_ID_PACKET,

  139.     SECTION_ID_PACKET_TAGS,

  140.     SECTION_ID_PACKETS,

  141.     SECTION_ID_PACKETS_AND_FRAMES,

  142.     SECTION_ID_PACKET_SIDE_DATA_LIST,

  143.     SECTION_ID_PACKET_SIDE_DATA,

  144.     SECTION_ID_PIXEL_FORMAT,

  145.     SECTION_ID_PIXEL_FORMAT_FLAGS,

  146.     SECTION_ID_PIXEL_FORMAT_COMPONENT,

  147.     SECTION_ID_PIXEL_FORMAT_COMPONENTS,

  148.     SECTION_ID_PIXEL_FORMATS,

  149.     SECTION_ID_PROGRAM_STREAM_DISPOSITION,

  150.     SECTION_ID_PROGRAM_STREAM_TAGS,

  151.     SECTION_ID_PROGRAM,

  152.     SECTION_ID_PROGRAM_STREAMS,

  153.     SECTION_ID_PROGRAM_STREAM,

  154.     SECTION_ID_PROGRAM_TAGS,

  155.     SECTION_ID_PROGRAM_VERSION,

  156.     SECTION_ID_PROGRAMS,

  157.     SECTION_ID_ROOT,

  158.     SECTION_ID_STREAM,

  159.     SECTION_ID_STREAM_DISPOSITION,

  160.     SECTION_ID_STREAMS,

  161.     SECTION_ID_STREAM_TAGS,

  162.     SECTION_ID_STREAM_SIDE_DATA_LIST,

  163.     SECTION_ID_STREAM_SIDE_DATA,

  164.     SECTION_ID_SUBTITLE,

  165. } SectionID;

  166. 

  167. static struct section sections[] = {

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

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

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

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

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

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

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

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

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

  177.     [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 } },

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

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

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

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

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

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

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

  185.     [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 } },

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

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

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

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

  190.     [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" },

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

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

  193.     [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" },

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

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

  196.     [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" },

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

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

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

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

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

  202.                                           SECTION_ID_PACKETS, SECTION_ID_ERROR, SECTION_ID_PROGRAM_VERSION, SECTION_ID_LIBRARY_VERSIONS,

  203.                                           SECTION_ID_PIXEL_FORMATS, -1} },

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

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

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

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

  208.     [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 } },

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

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

  211. };

  212. 

  213. static const OptionDef *options;

  214. 

  215. /* FFprobe context */

  216. static const char *input_filename;

  217. static AVInputFormat *iformat = NULL;

  218. 

  219. static struct AVHashContext *hash;

  220. 

  221. static const struct {

  222.     double bin_val;

  223.     double dec_val;

  224.     const char *bin_str;

  225.     const char *dec_str;

  226. } si_prefixes[] = {

  227.     { 1.0, 1.0, "", "" },

  228.     { 1.024e3, 1e3, "Ki", "K" },

  229.     { 1.048576e6, 1e6, "Mi", "M" },

  230.     { 1.073741824e9, 1e9, "Gi", "G" },

  231.     { 1.099511627776e12, 1e12, "Ti", "T" },

  232.     { 1.125899906842624e15, 1e15, "Pi", "P" },

  233. };

  234. 

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

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

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

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

  239. 

  240. static int nb_streams;

  241. static uint64_t *nb_streams_packets;

  242. static uint64_t *nb_streams_frames;

  243. static int *selected_streams;

  244. 

  245. static void ffprobe_cleanup(int ret)

  246. {

  247.     int i;

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

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

  250. }

  251. 

  252. struct unit_value {

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

  254.     const char *unit;

  255. };

  256. 

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

  258. {

  259.     double vald;

  260.     long long int vali;

  261.     int show_float = 0;

  262. 

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

  264.         vald = uv.val.d;

  265.         show_float = 1;

  266.     } else {

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

  268.     }

  269. 

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

  271.         double secs;

  272.         int hours, mins;

  273.         secs  = vald;

  274.         mins  = (int)secs / 60;

  275.         secs  = secs - mins * 60;

  276.         hours = mins / 60;

  277.         mins %= 60;

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

  279.     } else {

  280.         const char *prefix_string = "";

  281. 

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

  283.             long long int index;

  284. 

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

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

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

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

  289.                 prefix_string = si_prefixes[index].bin_str;

  290.             } else {

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

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

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

  294.                 prefix_string = si_prefixes[index].dec_str;

  295.             }

  296.             vali = vald;

  297.         }

  298. 

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

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

  301.         else

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

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

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

  305.     }

  306. 

  307.     return buf;

  308. }

  309. 

  310. /* WRITERS API */

  311. 

  312. typedef struct WriterContext WriterContext;

  313. 

  314. #define WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS 1

  315. #define WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER 2

  316. 

  317. typedef enum {

  318.     WRITER_STRING_VALIDATION_FAIL,

  319.     WRITER_STRING_VALIDATION_REPLACE,

  320.     WRITER_STRING_VALIDATION_IGNORE,

  321.     WRITER_STRING_VALIDATION_NB

  322. } StringValidation;

  323. 

  324. typedef struct Writer {

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

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

  327.     const char *name;

  328. 

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

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

  331. 

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

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

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

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

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

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

  338. } Writer;

  339. 

  340. #define SECTION_MAX_NB_LEVELS 10

  341. 

  342. struct WriterContext {

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

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

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

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

  347. 

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

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

  350. 

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

  352. 

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

  354.     unsigned int nb_item[SECTION_MAX_NB_LEVELS];

  355. 

  356.     /** section per each level */

  357.     const struct section *section[SECTION_MAX_NB_LEVELS];

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

  359.                                                   ///  used by various writers

  360. 

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

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

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

  364. 

  365.     int string_validation;

  366.     char *string_validation_replacement;

  367.     unsigned int string_validation_utf8_flags;

  368. };

  369. 

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

  371. {

  372.     WriterContext *wctx = p;

  373.     return wctx->writer->name;

  374. }

  375. 

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

  377. 

  378. static const AVOption writer_options[] = {

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

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

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

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

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

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

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

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

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

  388.     { NULL }

  389. };

  390. 

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

  392. {

  393.     WriterContext *ctx = obj;

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

  395.         return ctx->priv;

  396.     return NULL;

  397. }

  398. 

  399. static const AVClass writer_class = {

  400.     .class_name = "Writer",

  401.     .item_name  = writer_get_name,

  402.     .option     = writer_options,

  403.     .version    = LIBAVUTIL_VERSION_INT,

  404.     .child_next = writer_child_next,

  405. };

  406. 

  407. static void writer_close(WriterContext **wctx)

  408. {

  409.     int i;

  410. 

  411.     if (!*wctx)

  412.         return;

  413. 

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

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

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

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

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

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

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

  421.     av_opt_free(*wctx);

  422.     av_freep(wctx);

  423. }

  424. 

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

  426. {

  427.     int i;

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

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

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

  431. }

  432. 

  433. 

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

  435.                        const struct section *sections, int nb_sections)

  436. {

  437.     int i, ret = 0;

  438. 

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

  440.         ret = AVERROR(ENOMEM);

  441.         goto fail;

  442.     }

  443. 

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

  445.         ret = AVERROR(ENOMEM);

  446.         goto fail;

  447.     }

  448. 

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

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

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

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

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

  454. 

  455.     av_opt_set_defaults(*wctx);

  456. 

  457.     if (writer->priv_class) {

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

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

  460.         av_opt_set_defaults(priv_ctx);

  461.     }

  462. 

  463.     /* convert options to dictionary */

  464.     if (args) {

  465.         AVDictionary *opts = NULL;

  466.         AVDictionaryEntry *opt = NULL;

  467. 

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

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

  470.             av_dict_free(&opts);

  471.             goto fail;

  472.         }

  473. 

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

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

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

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

  478.                 av_dict_free(&opts);

  479.                 goto fail;

  480.             }

  481.         }

  482. 

  483.         av_dict_free(&opts);

  484.     }

  485. 

  486.     /* validate replace string */

  487.     {

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

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

  490.         while (*p) {

  491.             const uint8_t *p0 = p;

  492.             int32_t code;

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

  494.             if (ret < 0) {

  495.                 AVBPrint bp;

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

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

  498.                     av_log(wctx, AV_LOG_ERROR,

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

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

  501.                 return ret;

  502.             }

  503.         }

  504.     }

  505. 

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

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

  508. 

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

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

  511.     if (ret < 0)

  512.         goto fail;

  513. 

  514.     return 0;

  515. 

  516. fail:

  517.     writer_close(wctx);

  518.     return ret;

  519. }

  520. 

  521. static inline void writer_print_section_header(WriterContext *wctx,

  522.                                                int section_id)

  523. {

  524.     int parent_section_id;

  525.     wctx->level++;

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

  527.     parent_section_id = wctx->level ?

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

  529. 

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

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

  532. 

  533.     if (section_id == SECTION_ID_PACKETS_AND_FRAMES) {

  534.         wctx->nb_section_packet = wctx->nb_section_frame =

  535.         wctx->nb_section_packet_frame = 0;

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

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

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

  539.     }

  540. 

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

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

  543. }

  544. 

  545. static inline void writer_print_section_footer(WriterContext *wctx)

  546. {

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

  548.     int parent_section_id = wctx->level ?

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

  550. 

  551.     if (parent_section_id != SECTION_ID_NONE)

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

  553.     if (parent_section_id == SECTION_ID_PACKETS_AND_FRAMES) {

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

  555.         else                                     wctx->nb_section_frame++;

  556.     }

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

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

  559.     wctx->level--;

  560. }

  561. 

  562. static inline void writer_print_integer(WriterContext *wctx,

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

  564. {

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

  566. 

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

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

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

  570.     }

  571. }

  572. 

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

  574. {

  575.     const uint8_t *p, *endp;

  576.     AVBPrint dstbuf;

  577.     int invalid_chars_nb = 0, ret = 0;

  578. 

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

  580. 

  581.     endp = src + strlen(src);

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

  583.         uint32_t code;

  584.         int invalid = 0;

  585.         const uint8_t *p0 = p;

  586. 

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

  588.             AVBPrint bp;

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

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

  591.             av_log(wctx, AV_LOG_DEBUG,

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

  593.             invalid = 1;

  594.         }

  595. 

  596.         if (invalid) {

  597.             invalid_chars_nb++;

  598. 

  599.             switch (wctx->string_validation) {

  600.             case WRITER_STRING_VALIDATION_FAIL:

  601.                 av_log(wctx, AV_LOG_ERROR,

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

  603.                 ret = AVERROR_INVALIDDATA;

  604.                 goto end;

  605.                 break;

  606. 

  607.             case WRITER_STRING_VALIDATION_REPLACE:

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

  609.                 break;

  610.             }

  611.         }

  612. 

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

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

  615.     }

  616. 

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

  618.         av_log(wctx, AV_LOG_WARNING,

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

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

  621.     }

  622. 

  623. end:

  624.     av_bprint_finalize(&dstbuf, dstp);

  625.     return ret;

  626. }

  627. 

  628. #define PRINT_STRING_OPT      1

  629. #define PRINT_STRING_VALIDATE 2

  630. 

  631. static inline int writer_print_string(WriterContext *wctx,

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

  633. {

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

  635.     int ret = 0;

  636. 

  637.     if ((flags & PRINT_STRING_OPT)

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

  639.         return 0;

  640. 

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

  642.         if (flags & PRINT_STRING_VALIDATE) {

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

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

  645.             if (ret < 0) goto end;

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

  647.             if (ret < 0) goto end;

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

  649.         end:

  650.             if (ret < 0) {

  651.                 av_log(wctx, AV_LOG_ERROR,

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

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

  654.             }

  655.             av_free(key1);

  656.             av_free(val1);

  657.         } else {

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

  659.         }

  660. 

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

  662.     }

  663. 

  664.     return ret;

  665. }

  666. 

  667. static inline void writer_print_rational(WriterContext *wctx,

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

  669. {

  670.     AVBPrint buf;

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

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

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

  674. }

  675. 

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

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

  678. {

  679.     char buf[128];

  680. 

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

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

  683.     } else {

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

  685.         struct unit_value uv;

  686.         uv.val.d = d;

  687.         uv.unit = unit_second_str;

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

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

  690.     }

  691. }

  692. 

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

  694. {

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

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

  697.     } else {

  698.         writer_print_integer(wctx, key, ts);

  699.     }

  700. }

  701. 

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

  703.                               uint8_t *data, int size)

  704. {

  705.     AVBPrint bp;

  706.     int offset = 0, l, i;

  707. 

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

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

  710.     while (size) {

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

  712.         l = FFMIN(size, 16);

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

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

  715.             if (i & 1)

  716.                 av_bprintf(&bp, " ");

  717.         }

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

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

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

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

  722.         offset += l;

  723.         data   += l;

  724.         size   -= l;

  725.     }

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

  727.     av_bprint_finalize(&bp, NULL);

  728. }

  729. 

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

  731.                                    uint8_t *data, int size)

  732. {

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

  734. 

  735.     if (!hash)

  736.         return;

  737.     av_hash_init(hash);

  738.     av_hash_update(hash, data, size);

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

  740.     p = buf + strlen(buf);

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

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

  743. }

  744. 

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

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

  747.                                   int columns, int bytes, int offset_add)

  748. {

  749.     AVBPrint bp;

  750.     int offset = 0, l, i;

  751. 

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

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

  754.     while (size) {

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

  756.         l = FFMIN(size, columns);

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

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

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

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

  761.             data += bytes;

  762.             size --;

  763.         }

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

  765.         offset += offset_add;

  766.     }

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

  768.     av_bprint_finalize(&bp, NULL);

  769. }

  770. 

  771. #define MAX_REGISTERED_WRITERS_NB 64

  772. 

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

  774. 

  775. static int writer_register(const Writer *writer)

  776. {

  777.     static int next_registered_writer_idx = 0;

  778. 

  779.     if (next_registered_writer_idx == MAX_REGISTERED_WRITERS_NB)

  780.         return AVERROR(ENOMEM);

  781. 

  782.     registered_writers[next_registered_writer_idx++] = writer;

  783.     return 0;

  784. }

  785. 

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

  787. {

  788.     int i;

  789. 

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

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

  792.             return registered_writers[i];

  793. 

  794.     return NULL;

  795. }

  796. 

  797. 

  798. /* WRITERS */

  799. 

  800. #define DEFINE_WRITER_CLASS(name)                   \

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

  802. {                                                   \

  803.     return #name ;                                  \

  804. }                                                   \

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

  806.     .class_name = #name,                            \

  807.     .item_name  = name##_get_name,                  \

  808.     .option     = name##_options                    \

  809. }

  810. 

  811. /* Default output */

  812. 

  813. typedef struct DefaultContext {

  814.     const AVClass *class;

  815.     int nokey;

  816.     int noprint_wrappers;

  817.     int nested_section[SECTION_MAX_NB_LEVELS];

  818. } DefaultContext;

  819. 

  820. #undef OFFSET

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

  822. 

  823. static const AVOption default_options[] = {

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

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

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

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

  828.     {NULL},

  829. };

  830. 

  831. DEFINE_WRITER_CLASS(default);

  832. 

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

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

  835. {

  836.     int i;

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

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

  839.     dst[i] = 0;

  840.     return dst;

  841. }

  842. 

  843. static void default_print_section_header(WriterContext *wctx)

  844. {

  845.     DefaultContext *def = wctx->priv;

  846.     char buf[32];

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

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

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

  850. 

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

  852.     if (parent_section &&

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

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

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

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

  857.                    upcase_string(buf, sizeof(buf),

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

  859.     }

  860. 

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

  862.         return;

  863. 

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

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

  866. }

  867. 

  868. static void default_print_section_footer(WriterContext *wctx)

  869. {

  870.     DefaultContext *def = wctx->priv;

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

  872.     char buf[32];

  873. 

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

  875.         return;

  876. 

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

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

  879. }

  880. 

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

  882. {

  883.     DefaultContext *def = wctx->priv;

  884. 

  885.     if (!def->nokey)

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

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

  888. }

  889. 

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

  891. {

  892.     DefaultContext *def = wctx->priv;

  893. 

  894.     if (!def->nokey)

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

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

  897. }

  898. 

  899. static const Writer default_writer = {

  900.     .name                  = "default",

  901.     .priv_size             = sizeof(DefaultContext),

  902.     .print_section_header  = default_print_section_header,

  903.     .print_section_footer  = default_print_section_footer,

  904.     .print_integer         = default_print_int,

  905.     .print_string          = default_print_str,

  906.     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,

  907.     .priv_class            = &default_class,

  908. };

  909. 

  910. /* Compact output */

  911. 

  912. /**

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

  914.  */

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

  916. {

  917.     const char *p;

  918. 

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

  920.         switch (*p) {

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

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

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

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

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

  926.         default:

  927.             if (*p == sep)

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

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

  930.         }

  931.     }

  932.     return dst->str;

  933. }

  934. 

  935. /**

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

  937.  */

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

  939. {

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

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

  942. 

  943.     if (needs_quoting)

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

  945. 

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

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

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

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

  950.     }

  951.     if (needs_quoting)

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

  953.     return dst->str;

  954. }

  955. 

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

  957. {

  958.     return src;

  959. }

  960. 

  961. typedef struct CompactContext {

  962.     const AVClass *class;

  963.     char *item_sep_str;

  964.     char item_sep;

  965.     int nokey;

  966.     int print_section;

  967.     char *escape_mode_str;

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

  969.     int nested_section[SECTION_MAX_NB_LEVELS];

  970.     int has_nested_elems[SECTION_MAX_NB_LEVELS];

  971.     int terminate_line[SECTION_MAX_NB_LEVELS];

  972. } CompactContext;

  973. 

  974. #undef OFFSET

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

  976. 

  977. static const AVOption compact_options[]= {

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

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

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

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

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

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

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

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

  986.     {NULL},

  987. };

  988. 

  989. DEFINE_WRITER_CLASS(compact);

  990. 

  991. static av_cold int compact_init(WriterContext *wctx)

  992. {

  993.     CompactContext *compact = wctx->priv;

  994. 

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

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

  997.                compact->item_sep_str);

  998.         return AVERROR(EINVAL);

  999.     }

  1000.     compact->item_sep = compact->item_sep_str[0];

  1001. 

  1002.     if      (!strcmp(compact->escape_mode_str, "none")) compact->escape_str = none_escape_str;

  1003.     else if (!strcmp(compact->escape_mode_str, "c"   )) compact->escape_str = c_escape_str;

  1004.     else if (!strcmp(compact->escape_mode_str, "csv" )) compact->escape_str = csv_escape_str;

  1005.     else {

  1006.         av_log(wctx, AV_LOG_ERROR, "Unknown escape mode '%s'\n", compact->escape_mode_str);

  1007.         return AVERROR(EINVAL);

  1008.     }

  1009. 

  1010.     return 0;

  1011. }

  1012. 

  1013. static void compact_print_section_header(WriterContext *wctx)

  1014. {

  1015.     CompactContext *compact = wctx->priv;

  1016.     const struct section *section = wctx->section[wctx->level];

  1017.     const struct section *parent_section = wctx->level ?

  1018.         wctx->section[wctx->level-1] : NULL;

  1019.     compact->terminate_line[wctx->level] = 1;

  1020.     compact->has_nested_elems[wctx->level] = 0;

  1021. 

  1022.     av_bprint_clear(&wctx->section_pbuf[wctx->level]);

  1023.     if (!(section->flags & SECTION_FLAG_IS_ARRAY) && parent_section &&

  1024.         !(parent_section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY))) {

  1025.         compact->nested_section[wctx->level] = 1;

  1026.         compact->has_nested_elems[wctx->level-1] = 1;

  1027.         av_bprintf(&wctx->section_pbuf[wctx->level], "%s%s:",

  1028.                    wctx->section_pbuf[wctx->level-1].str,

  1029.                    (char *)av_x_if_null(section->element_name, section->name));

  1030.         wctx->nb_item[wctx->level] = wctx->nb_item[wctx->level-1];

  1031.     } else {

  1032.         if (parent_section && compact->has_nested_elems[wctx->level-1] &&

  1033.             (section->flags & SECTION_FLAG_IS_ARRAY)) {

  1034.             compact->terminate_line[wctx->level-1] = 0;

  1035.             printf("\n");

  1036.         }

  1037.         if (compact->print_section &&

  1038.             !(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))

  1039.             printf("%s%c", section->name, compact->item_sep);

  1040.     }

  1041. }

  1042. 

  1043. static void compact_print_section_footer(WriterContext *wctx)

  1044. {

  1045.     CompactContext *compact = wctx->priv;

  1046. 

  1047.     if (!compact->nested_section[wctx->level] &&

  1048.         compact->terminate_line[wctx->level] &&

  1049.         !(wctx->section[wctx->level]->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))

  1050.         printf("\n");

  1051. }

  1052. 

  1053. static void compact_print_str(WriterContext *wctx, const char *key, const char *value)

  1054. {

  1055.     CompactContext *compact = wctx->priv;

  1056.     AVBPrint buf;

  1057. 

  1058.     if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);

  1059.     if (!compact->nokey)

  1060.         printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);

  1061.     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1062.     printf("%s", compact->escape_str(&buf, value, compact->item_sep, wctx));

  1063.     av_bprint_finalize(&buf, NULL);

  1064. }

  1065. 

  1066. static void compact_print_int(WriterContext *wctx, const char *key, long long int value)

  1067. {

  1068.     CompactContext *compact = wctx->priv;

  1069. 

  1070.     if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);

  1071.     if (!compact->nokey)

  1072.         printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);

  1073.     printf("%lld", value);

  1074. }

  1075. 

  1076. static const Writer compact_writer = {

  1077.     .name                 = "compact",

  1078.     .priv_size            = sizeof(CompactContext),

  1079.     .init                 = compact_init,

  1080.     .print_section_header = compact_print_section_header,

  1081.     .print_section_footer = compact_print_section_footer,

  1082.     .print_integer        = compact_print_int,

  1083.     .print_string         = compact_print_str,

  1084.     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,

  1085.     .priv_class           = &compact_class,

  1086. };

  1087. 

  1088. /* CSV output */

  1089. 

  1090. #undef OFFSET

  1091. #define OFFSET(x) offsetof(CompactContext, x)

  1092. 

  1093. static const AVOption csv_options[] = {

  1094.     {"item_sep", "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str=","},  CHAR_MIN, CHAR_MAX },

  1095.     {"s",        "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str=","},  CHAR_MIN, CHAR_MAX },

  1096.     {"nokey",    "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },

  1097.     {"nk",       "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },

  1098.     {"escape",   "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="csv"}, CHAR_MIN, CHAR_MAX },

  1099.     {"e",        "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="csv"}, CHAR_MIN, CHAR_MAX },

  1100.     {"print_section", "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },

  1101.     {"p",             "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },

  1102.     {NULL},

  1103. };

  1104. 

  1105. DEFINE_WRITER_CLASS(csv);

  1106. 

  1107. static const Writer csv_writer = {

  1108.     .name                 = "csv",

  1109.     .priv_size            = sizeof(CompactContext),

  1110.     .init                 = compact_init,

  1111.     .print_section_header = compact_print_section_header,

  1112.     .print_section_footer = compact_print_section_footer,

  1113.     .print_integer        = compact_print_int,

  1114.     .print_string         = compact_print_str,

  1115.     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,

  1116.     .priv_class           = &csv_class,

  1117. };

  1118. 

  1119. /* Flat output */

  1120. 

  1121. typedef struct FlatContext {

  1122.     const AVClass *class;

  1123.     const char *sep_str;

  1124.     char sep;

  1125.     int hierarchical;

  1126. } FlatContext;

  1127. 

  1128. #undef OFFSET

  1129. #define OFFSET(x) offsetof(FlatContext, x)

  1130. 

  1131. static const AVOption flat_options[]= {

  1132.     {"sep_char", "set separator",    OFFSET(sep_str),    AV_OPT_TYPE_STRING, {.str="."},  CHAR_MIN, CHAR_MAX },

  1133.     {"s",        "set separator",    OFFSET(sep_str),    AV_OPT_TYPE_STRING, {.str="."},  CHAR_MIN, CHAR_MAX },

  1134.     {"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },

  1135.     {"h",            "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },

  1136.     {NULL},

  1137. };

  1138. 

  1139. DEFINE_WRITER_CLASS(flat);

  1140. 

  1141. static av_cold int flat_init(WriterContext *wctx)

  1142. {

  1143.     FlatContext *flat = wctx->priv;

  1144. 

  1145.     if (strlen(flat->sep_str) != 1) {

  1146.         av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",

  1147.                flat->sep_str);

  1148.         return AVERROR(EINVAL);

  1149.     }

  1150.     flat->sep = flat->sep_str[0];

  1151. 

  1152.     return 0;

  1153. }

  1154. 

  1155. static const char *flat_escape_key_str(AVBPrint *dst, const char *src, const char sep)

  1156. {

  1157.     const char *p;

  1158. 

  1159.     for (p = src; *p; p++) {

  1160.         if (!((*p >= '0' && *p <= '9') ||

  1161.               (*p >= 'a' && *p <= 'z') ||

  1162.               (*p >= 'A' && *p <= 'Z')))

  1163.             av_bprint_chars(dst, '_', 1);

  1164.         else

  1165.             av_bprint_chars(dst, *p, 1);

  1166.     }

  1167.     return dst->str;

  1168. }

  1169. 

  1170. static const char *flat_escape_value_str(AVBPrint *dst, const char *src)

  1171. {

  1172.     const char *p;

  1173. 

  1174.     for (p = src; *p; p++) {

  1175.         switch (*p) {

  1176.         case '\n': av_bprintf(dst, "%s", "\\n");  break;

  1177.         case '\r': av_bprintf(dst, "%s", "\\r");  break;

  1178.         case '\\': av_bprintf(dst, "%s", "\\\\"); break;

  1179.         case '"':  av_bprintf(dst, "%s", "\\\""); break;

  1180.         case '`':  av_bprintf(dst, "%s", "\\`");  break;

  1181.         case '$':  av_bprintf(dst, "%s", "\\$");  break;

  1182.         default:   av_bprint_chars(dst, *p, 1);   break;

  1183.         }

  1184.     }

  1185.     return dst->str;

  1186. }

  1187. 

  1188. static void flat_print_section_header(WriterContext *wctx)

  1189. {

  1190.     FlatContext *flat = wctx->priv;

  1191.     AVBPrint *buf = &wctx->section_pbuf[wctx->level];

  1192.     const struct section *section = wctx->section[wctx->level];

  1193.     const struct section *parent_section = wctx->level ?

  1194.         wctx->section[wctx->level-1] : NULL;

  1195. 

  1196.     /* build section header */

  1197.     av_bprint_clear(buf);

  1198.     if (!parent_section)

  1199.         return;

  1200.     av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);

  1201. 

  1202.     if (flat->hierarchical ||

  1203.         !(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER))) {

  1204.         av_bprintf(buf, "%s%s", wctx->section[wctx->level]->name, flat->sep_str);

  1205. 

  1206.         if (parent_section->flags & SECTION_FLAG_IS_ARRAY) {

  1207.             int n = parent_section->id == SECTION_ID_PACKETS_AND_FRAMES ?

  1208.                 wctx->nb_section_packet_frame : wctx->nb_item[wctx->level-1];

  1209.             av_bprintf(buf, "%d%s", n, flat->sep_str);

  1210.         }

  1211.     }

  1212. }

  1213. 

  1214. static void flat_print_int(WriterContext *wctx, const char *key, long long int value)

  1215. {

  1216.     printf("%s%s=%lld\n", wctx->section_pbuf[wctx->level].str, key, value);

  1217. }

  1218. 

  1219. static void flat_print_str(WriterContext *wctx, const char *key, const char *value)

  1220. {

  1221.     FlatContext *flat = wctx->priv;

  1222.     AVBPrint buf;

  1223. 

  1224.     printf("%s", wctx->section_pbuf[wctx->level].str);

  1225.     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1226.     printf("%s=", flat_escape_key_str(&buf, key, flat->sep));

  1227.     av_bprint_clear(&buf);

  1228.     printf("\"%s\"\n", flat_escape_value_str(&buf, value));

  1229.     av_bprint_finalize(&buf, NULL);

  1230. }

  1231. 

  1232. static const Writer flat_writer = {

  1233.     .name                  = "flat",

  1234.     .priv_size             = sizeof(FlatContext),

  1235.     .init                  = flat_init,

  1236.     .print_section_header  = flat_print_section_header,

  1237.     .print_integer         = flat_print_int,

  1238.     .print_string          = flat_print_str,

  1239.     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS|WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,

  1240.     .priv_class            = &flat_class,

  1241. };

  1242. 

  1243. /* INI format output */

  1244. 

  1245. typedef struct INIContext {

  1246.     const AVClass *class;

  1247.     int hierarchical;

  1248. } INIContext;

  1249. 

  1250. #undef OFFSET

  1251. #define OFFSET(x) offsetof(INIContext, x)

  1252. 

  1253. static const AVOption ini_options[] = {

  1254.     {"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },

  1255.     {"h",            "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },

  1256.     {NULL},

  1257. };

  1258. 

  1259. DEFINE_WRITER_CLASS(ini);

  1260. 

  1261. static char *ini_escape_str(AVBPrint *dst, const char *src)

  1262. {

  1263.     int i = 0;

  1264.     char c = 0;

  1265. 

  1266.     while (c = src[i++]) {

  1267.         switch (c) {

  1268.         case '\b': av_bprintf(dst, "%s", "\\b"); break;

  1269.         case '\f': av_bprintf(dst, "%s", "\\f"); break;

  1270.         case '\n': av_bprintf(dst, "%s", "\\n"); break;

  1271.         case '\r': av_bprintf(dst, "%s", "\\r"); break;

  1272.         case '\t': av_bprintf(dst, "%s", "\\t"); break;

  1273.         case '\\':

  1274.         case '#' :

  1275.         case '=' :

  1276.         case ':' : av_bprint_chars(dst, '\\', 1);

  1277.         default:

  1278.             if ((unsigned char)c < 32)

  1279.                 av_bprintf(dst, "\\x00%02x", c & 0xff);

  1280.             else

  1281.                 av_bprint_chars(dst, c, 1);

  1282.             break;

  1283.         }

  1284.     }

  1285.     return dst->str;

  1286. }

  1287. 

  1288. static void ini_print_section_header(WriterContext *wctx)

  1289. {

  1290.     INIContext *ini = wctx->priv;

  1291.     AVBPrint *buf = &wctx->section_pbuf[wctx->level];

  1292.     const struct section *section = wctx->section[wctx->level];

  1293.     const struct section *parent_section = wctx->level ?

  1294.         wctx->section[wctx->level-1] : NULL;

  1295. 

  1296.     av_bprint_clear(buf);

  1297.     if (!parent_section) {

  1298.         printf("# ffprobe output\n\n");

  1299.         return;

  1300.     }

  1301. 

  1302.     if (wctx->nb_item[wctx->level-1])

  1303.         printf("\n");

  1304. 

  1305.     av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);

  1306.     if (ini->hierarchical ||

  1307.         !(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER))) {

  1308.         av_bprintf(buf, "%s%s", buf->str[0] ? "." : "", wctx->section[wctx->level]->name);

  1309. 

  1310.         if (parent_section->flags & SECTION_FLAG_IS_ARRAY) {

  1311.             int n = parent_section->id == SECTION_ID_PACKETS_AND_FRAMES ?

  1312.                 wctx->nb_section_packet_frame : wctx->nb_item[wctx->level-1];

  1313.             av_bprintf(buf, ".%d", n);

  1314.         }

  1315.     }

  1316. 

  1317.     if (!(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER)))

  1318.         printf("[%s]\n", buf->str);

  1319. }

  1320. 

  1321. static void ini_print_str(WriterContext *wctx, const char *key, const char *value)

  1322. {

  1323.     AVBPrint buf;

  1324. 

  1325.     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1326.     printf("%s=", ini_escape_str(&buf, key));

  1327.     av_bprint_clear(&buf);

  1328.     printf("%s\n", ini_escape_str(&buf, value));

  1329.     av_bprint_finalize(&buf, NULL);

  1330. }

  1331. 

  1332. static void ini_print_int(WriterContext *wctx, const char *key, long long int value)

  1333. {

  1334.     printf("%s=%lld\n", key, value);

  1335. }

  1336. 

  1337. static const Writer ini_writer = {

  1338.     .name                  = "ini",

  1339.     .priv_size             = sizeof(INIContext),

  1340.     .print_section_header  = ini_print_section_header,

  1341.     .print_integer         = ini_print_int,

  1342.     .print_string          = ini_print_str,

  1343.     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS|WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,

  1344.     .priv_class            = &ini_class,

  1345. };

  1346. 

  1347. /* JSON output */

  1348. 

  1349. typedef struct JSONContext {

  1350.     const AVClass *class;

  1351.     int indent_level;

  1352.     int compact;

  1353.     const char *item_sep, *item_start_end;

  1354. } JSONContext;

  1355. 

  1356. #undef OFFSET

  1357. #define OFFSET(x) offsetof(JSONContext, x)

  1358. 

  1359. static const AVOption json_options[]= {

  1360.     { "compact", "enable compact output", OFFSET(compact), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },

  1361.     { "c",       "enable compact output", OFFSET(compact), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },

  1362.     { NULL }

  1363. };

  1364. 

  1365. DEFINE_WRITER_CLASS(json);

  1366. 

  1367. static av_cold int json_init(WriterContext *wctx)

  1368. {

  1369.     JSONContext *json = wctx->priv;

  1370. 

  1371.     json->item_sep       = json->compact ? ", " : ",\n";

  1372.     json->item_start_end = json->compact ? " "  : "\n";

  1373. 

  1374.     return 0;

  1375. }

  1376. 

  1377. static const char *json_escape_str(AVBPrint *dst, const char *src, void *log_ctx)

  1378. {

  1379.     static const char json_escape[] = {'"', '\\', '\b', '\f', '\n', '\r', '\t', 0};

  1380.     static const char json_subst[]  = {'"', '\\',  'b',  'f',  'n',  'r',  't', 0};

  1381.     const char *p;

  1382. 

  1383.     for (p = src; *p; p++) {

  1384.         char *s = strchr(json_escape, *p);

  1385.         if (s) {

  1386.             av_bprint_chars(dst, '\\', 1);

  1387.             av_bprint_chars(dst, json_subst[s - json_escape], 1);

  1388.         } else if ((unsigned char)*p < 32) {

  1389.             av_bprintf(dst, "\\u00%02x", *p & 0xff);

  1390.         } else {

  1391.             av_bprint_chars(dst, *p, 1);

  1392.         }

  1393.     }

  1394.     return dst->str;

  1395. }

  1396. 

  1397. #define JSON_INDENT() printf("%*c", json->indent_level * 4, ' ')

  1398. 

  1399. static void json_print_section_header(WriterContext *wctx)

  1400. {

  1401.     JSONContext *json = wctx->priv;

  1402.     AVBPrint buf;

  1403.     const struct section *section = wctx->section[wctx->level];

  1404.     const struct section *parent_section = wctx->level ?

  1405.         wctx->section[wctx->level-1] : NULL;

  1406. 

  1407.     if (wctx->level && wctx->nb_item[wctx->level-1])

  1408.         printf(",\n");

  1409. 

  1410.     if (section->flags & SECTION_FLAG_IS_WRAPPER) {

  1411.         printf("{\n");

  1412.         json->indent_level++;

  1413.     } else {

  1414.         av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1415.         json_escape_str(&buf, section->name, wctx);

  1416.         JSON_INDENT();

  1417. 

  1418.         json->indent_level++;

  1419.         if (section->flags & SECTION_FLAG_IS_ARRAY) {

  1420.             printf("\"%s\": [\n", buf.str);

  1421.         } else if (parent_section && !(parent_section->flags & SECTION_FLAG_IS_ARRAY)) {

  1422.             printf("\"%s\": {%s", buf.str, json->item_start_end);

  1423.         } else {

  1424.             printf("{%s", json->item_start_end);

  1425. 

  1426.             /* this is required so the parser can distinguish between packets and frames */

  1427.             if (parent_section && parent_section->id == SECTION_ID_PACKETS_AND_FRAMES) {

  1428.                 if (!json->compact)

  1429.                     JSON_INDENT();

  1430.                 printf("\"type\": \"%s\"%s", section->name, json->item_sep);

  1431.             }

  1432.         }

  1433.         av_bprint_finalize(&buf, NULL);

  1434.     }

  1435. }

  1436. 

  1437. static void json_print_section_footer(WriterContext *wctx)

  1438. {

  1439.     JSONContext *json = wctx->priv;

  1440.     const struct section *section = wctx->section[wctx->level];

  1441. 

  1442.     if (wctx->level == 0) {

  1443.         json->indent_level--;

  1444.         printf("\n}\n");

  1445.     } else if (section->flags & SECTION_FLAG_IS_ARRAY) {

  1446.         printf("\n");

  1447.         json->indent_level--;

  1448.         JSON_INDENT();

  1449.         printf("]");

  1450.     } else {

  1451.         printf("%s", json->item_start_end);

  1452.         json->indent_level--;

  1453.         if (!json->compact)

  1454.             JSON_INDENT();

  1455.         printf("}");

  1456.     }

  1457. }

  1458. 

  1459. static inline void json_print_item_str(WriterContext *wctx,

  1460.                                        const char *key, const char *value)

  1461. {

  1462.     AVBPrint buf;

  1463. 

  1464.     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1465.     printf("\"%s\":", json_escape_str(&buf, key,   wctx));

  1466.     av_bprint_clear(&buf);

  1467.     printf(" \"%s\"", json_escape_str(&buf, value, wctx));

  1468.     av_bprint_finalize(&buf, NULL);

  1469. }

  1470. 

  1471. static void json_print_str(WriterContext *wctx, const char *key, const char *value)

  1472. {

  1473.     JSONContext *json = wctx->priv;

  1474. 

  1475.     if (wctx->nb_item[wctx->level])

  1476.         printf("%s", json->item_sep);

  1477.     if (!json->compact)

  1478.         JSON_INDENT();

  1479.     json_print_item_str(wctx, key, value);

  1480. }

  1481. 

  1482. static void json_print_int(WriterContext *wctx, const char *key, long long int value)

  1483. {

  1484.     JSONContext *json = wctx->priv;

  1485.     AVBPrint buf;

  1486. 

  1487.     if (wctx->nb_item[wctx->level])

  1488.         printf("%s", json->item_sep);

  1489.     if (!json->compact)

  1490.         JSON_INDENT();

  1491. 

  1492.     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1493.     printf("\"%s\": %lld", json_escape_str(&buf, key, wctx), value);

  1494.     av_bprint_finalize(&buf, NULL);

  1495. }

  1496. 

  1497. static const Writer json_writer = {

  1498.     .name                 = "json",

  1499.     .priv_size            = sizeof(JSONContext),

  1500.     .init                 = json_init,

  1501.     .print_section_header = json_print_section_header,

  1502.     .print_section_footer = json_print_section_footer,

  1503.     .print_integer        = json_print_int,

  1504.     .print_string         = json_print_str,

  1505.     .flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,

  1506.     .priv_class           = &json_class,

  1507. };

  1508. 

  1509. /* XML output */

  1510. 

  1511. typedef struct XMLContext {

  1512.     const AVClass *class;

  1513.     int within_tag;

  1514.     int indent_level;

  1515.     int fully_qualified;

  1516.     int xsd_strict;

  1517. } XMLContext;

  1518. 

  1519. #undef OFFSET

  1520. #define OFFSET(x) offsetof(XMLContext, x)

  1521. 

  1522. static const AVOption xml_options[] = {

  1523.     {"fully_qualified", "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },

  1524.     {"q",               "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },

  1525.     {"xsd_strict",      "ensure that the output is XSD compliant",         OFFSET(xsd_strict),      AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },

  1526.     {"x",               "ensure that the output is XSD compliant",         OFFSET(xsd_strict),      AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },

  1527.     {NULL},

  1528. };

  1529. 

  1530. DEFINE_WRITER_CLASS(xml);

  1531. 

  1532. static av_cold int xml_init(WriterContext *wctx)

  1533. {

  1534.     XMLContext *xml = wctx->priv;

  1535. 

  1536.     if (xml->xsd_strict) {

  1537.         xml->fully_qualified = 1;

  1538. #define CHECK_COMPLIANCE(opt, opt_name)                                 \

  1539.         if (opt) {                                                      \

  1540.             av_log(wctx, AV_LOG_ERROR,                                  \

  1541.                    "XSD-compliant output selected but option '%s' was selected, XML output may be non-compliant.\n" \

  1542.                    "You need to disable such option with '-no%s'\n", opt_name, opt_name); \

  1543.             return AVERROR(EINVAL);                                     \

  1544.         }

  1545.         CHECK_COMPLIANCE(show_private_data, "private");

  1546.         CHECK_COMPLIANCE(show_value_unit,   "unit");

  1547.         CHECK_COMPLIANCE(use_value_prefix,  "prefix");

  1548. 

  1549.         if (do_show_frames && do_show_packets) {

  1550.             av_log(wctx, AV_LOG_ERROR,

  1551.                    "Interleaved frames and packets are not allowed in XSD. "

  1552.                    "Select only one between the -show_frames and the -show_packets options.\n");

  1553.             return AVERROR(EINVAL);

  1554.         }

  1555.     }

  1556. 

  1557.     return 0;

  1558. }

  1559. 

  1560. static const char *xml_escape_str(AVBPrint *dst, const char *src, void *log_ctx)

  1561. {

  1562.     const char *p;

  1563. 

  1564.     for (p = src; *p; p++) {

  1565.         switch (*p) {

  1566.         case '&' : av_bprintf(dst, "%s", "&amp;");  break;

  1567.         case '<' : av_bprintf(dst, "%s", "&lt;");   break;

  1568.         case '>' : av_bprintf(dst, "%s", "&gt;");   break;

  1569.         case '"' : av_bprintf(dst, "%s", "&quot;"); break;

  1570.         case '\'': av_bprintf(dst, "%s", "&apos;"); break;

  1571.         default: av_bprint_chars(dst, *p, 1);

  1572.         }

  1573.     }

  1574. 

  1575.     return dst->str;

  1576. }

  1577. 

  1578. #define XML_INDENT() printf("%*c", xml->indent_level * 4, ' ')

  1579. 

  1580. static void xml_print_section_header(WriterContext *wctx)

  1581. {

  1582.     XMLContext *xml = wctx->priv;

  1583.     const struct section *section = wctx->section[wctx->level];

  1584.     const struct section *parent_section = wctx->level ?

  1585.         wctx->section[wctx->level-1] : NULL;

  1586. 

  1587.     if (wctx->level == 0) {

  1588.         const char *qual = " xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' "

  1589.             "xmlns:ffprobe='http://www.ffmpeg.org/schema/ffprobe' "

  1590.             "xsi:schemaLocation='http://www.ffmpeg.org/schema/ffprobe ffprobe.xsd'";

  1591. 

  1592.         printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");

  1593.         printf("<%sffprobe%s>\n",

  1594.                xml->fully_qualified ? "ffprobe:" : "",

  1595.                xml->fully_qualified ? qual : "");

  1596.         return;

  1597.     }

  1598. 

  1599.     if (xml->within_tag) {

  1600.         xml->within_tag = 0;

  1601.         printf(">\n");

  1602.     }

  1603.     if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {

  1604.         xml->indent_level++;

  1605.     } else {

  1606.         if (parent_section && (parent_section->flags & SECTION_FLAG_IS_WRAPPER) &&

  1607.             wctx->level && wctx->nb_item[wctx->level-1])

  1608.             printf("\n");

  1609.         xml->indent_level++;

  1610. 

  1611.         if (section->flags & SECTION_FLAG_IS_ARRAY) {

  1612.             XML_INDENT(); printf("<%s>\n", section->name);

  1613.         } else {

  1614.             XML_INDENT(); printf("<%s ", section->name);

  1615.             xml->within_tag = 1;

  1616.         }

  1617.     }

  1618. }

  1619. 

  1620. static void xml_print_section_footer(WriterContext *wctx)

  1621. {

  1622.     XMLContext *xml = wctx->priv;

  1623.     const struct section *section = wctx->section[wctx->level];

  1624. 

  1625.     if (wctx->level == 0) {

  1626.         printf("</%sffprobe>\n", xml->fully_qualified ? "ffprobe:" : "");

  1627.     } else if (xml->within_tag) {

  1628.         xml->within_tag = 0;

  1629.         printf("/>\n");

  1630.         xml->indent_level--;

  1631.     } else if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {

  1632.         xml->indent_level--;

  1633.     } else {

  1634.         XML_INDENT(); printf("</%s>\n", section->name);

  1635.         xml->indent_level--;

  1636.     }

  1637. }

  1638. 

  1639. static void xml_print_str(WriterContext *wctx, const char *key, const char *value)

  1640. {

  1641.     AVBPrint buf;

  1642.     XMLContext *xml = wctx->priv;

  1643.     const struct section *section = wctx->section[wctx->level];

  1644. 

  1645.     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1646. 

  1647.     if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {

  1648.         XML_INDENT();

  1649.         printf("<%s key=\"%s\"",

  1650.                section->element_name, xml_escape_str(&buf, key, wctx));

  1651.         av_bprint_clear(&buf);

  1652.         printf(" value=\"%s\"/>\n", xml_escape_str(&buf, value, wctx));

  1653.     } else {

  1654.         if (wctx->nb_item[wctx->level])

  1655.             printf(" ");

  1656.         printf("%s=\"%s\"", key, xml_escape_str(&buf, value, wctx));

  1657.     }

  1658. 

  1659.     av_bprint_finalize(&buf, NULL);

  1660. }

  1661. 

  1662. static void xml_print_int(WriterContext *wctx, const char *key, long long int value)

  1663. {

  1664.     if (wctx->nb_item[wctx->level])

  1665.         printf(" ");

  1666.     printf("%s=\"%lld\"", key, value);

  1667. }

  1668. 

  1669. static Writer xml_writer = {

  1670.     .name                 = "xml",

  1671.     .priv_size            = sizeof(XMLContext),

  1672.     .init                 = xml_init,

  1673.     .print_section_header = xml_print_section_header,

  1674.     .print_section_footer = xml_print_section_footer,

  1675.     .print_integer        = xml_print_int,

  1676.     .print_string         = xml_print_str,

  1677.     .flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,

  1678.     .priv_class           = &xml_class,

  1679. };

  1680. 

  1681. static void writer_register_all(void)

  1682. {

  1683.     static int initialized;

  1684. 

  1685.     if (initialized)

  1686.         return;

  1687.     initialized = 1;

  1688. 

  1689.     writer_register(&default_writer);

  1690.     writer_register(&compact_writer);

  1691.     writer_register(&csv_writer);

  1692.     writer_register(&flat_writer);

  1693.     writer_register(&ini_writer);

  1694.     writer_register(&json_writer);

  1695.     writer_register(&xml_writer);

  1696. }

  1697. 

  1698. #define print_fmt(k, f, ...) do {              \

  1699.     av_bprint_clear(&pbuf);                    \

  1700.     av_bprintf(&pbuf, f, __VA_ARGS__);         \

  1701.     writer_print_string(w, k, pbuf.str, 0);    \

  1702. } while (0)

  1703. 

  1704. #define print_int(k, v)         writer_print_integer(w, k, v)

  1705. #define print_q(k, v, s)        writer_print_rational(w, k, v, s)

  1706. #define print_str(k, v)         writer_print_string(w, k, v, 0)

  1707. #define print_str_opt(k, v)     writer_print_string(w, k, v, PRINT_STRING_OPT)

  1708. #define print_str_validate(k, v) writer_print_string(w, k, v, PRINT_STRING_VALIDATE)

  1709. #define print_time(k, v, tb)    writer_print_time(w, k, v, tb, 0)

  1710. #define print_ts(k, v)          writer_print_ts(w, k, v, 0)

  1711. #define print_duration_time(k, v, tb) writer_print_time(w, k, v, tb, 1)

  1712. #define print_duration_ts(k, v)       writer_print_ts(w, k, v, 1)

  1713. #define print_val(k, v, u) do {                                     \

  1714.     struct unit_value uv;                                           \

  1715.     uv.val.i = v;                                                   \

  1716.     uv.unit = u;                                                    \

  1717.     writer_print_string(w, k, value_string(val_str, sizeof(val_str), uv), 0); \

  1718. } while (0)

  1719. 

  1720. #define print_section_header(s) writer_print_section_header(w, s)

  1721. #define print_section_footer(s) writer_print_section_footer(w, s)

  1722. 

  1723. #define REALLOCZ_ARRAY_STREAM(ptr, cur_n, new_n)                        \

  1724. {                                                                       \

  1725.     ret = av_reallocp_array(&(ptr), (new_n), sizeof(*(ptr)));           \

  1726.     if (ret < 0)                                                        \

  1727.         goto end;                                                       \

  1728.     memset( (ptr) + (cur_n), 0, ((new_n) - (cur_n)) * sizeof(*(ptr)) ); \

  1729. }

  1730. 

  1731. static inline int show_tags(WriterContext *w, AVDictionary *tags, int section_id)

  1732. {

  1733.     AVDictionaryEntry *tag = NULL;

  1734.     int ret = 0;

  1735. 

  1736.     if (!tags)

  1737.         return 0;

  1738.     writer_print_section_header(w, section_id);

  1739. 

  1740.     while ((tag = av_dict_get(tags, "", tag, AV_DICT_IGNORE_SUFFIX))) {

  1741.         if ((ret = print_str_validate(tag->key, tag->value)) < 0)

  1742.             break;

  1743.     }

  1744.     writer_print_section_footer(w);

  1745. 

  1746.     return ret;

  1747. }

  1748. 

  1749. static void show_packet(WriterContext *w, AVFormatContext *fmt_ctx, AVPacket *pkt, int packet_idx)

  1750. {

  1751.     char val_str[128];

  1752.     AVStream *st = fmt_ctx->streams[pkt->stream_index];

  1753.     AVBPrint pbuf;

  1754.     const char *s;

  1755. 

  1756.     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1757. 

  1758.     writer_print_section_header(w, SECTION_ID_PACKET);

  1759. 

  1760.     s = av_get_media_type_string(st->codec->codec_type);

  1761.     if (s) print_str    ("codec_type", s);

  1762.     else   print_str_opt("codec_type", "unknown");

  1763.     print_int("stream_index",     pkt->stream_index);

  1764.     print_ts  ("pts",             pkt->pts);

  1765.     print_time("pts_time",        pkt->pts, &st->time_base);

  1766.     print_ts  ("dts",             pkt->dts);

  1767.     print_time("dts_time",        pkt->dts, &st->time_base);

  1768.     print_duration_ts("duration",        pkt->duration);

  1769.     print_duration_time("duration_time", pkt->duration, &st->time_base);

  1770.     print_duration_ts("convergence_duration", pkt->convergence_duration);

  1771.     print_duration_time("convergence_duration_time", pkt->convergence_duration, &st->time_base);

  1772.     print_val("size",             pkt->size, unit_byte_str);

  1773.     if (pkt->pos != -1) print_fmt    ("pos", "%"PRId64, pkt->pos);

  1774.     else                print_str_opt("pos", "N/A");

  1775.     print_fmt("flags", "%c",      pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_');

  1776. 

  1777.     if (pkt->side_data_elems) {

  1778.         int i;

  1779.         int size;

  1780.         const uint8_t *side_metadata;

  1781. 

  1782.         side_metadata = av_packet_get_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA, &size);

  1783.         if (side_metadata && size && do_show_packet_tags) {

  1784.             AVDictionary *dict = NULL;

  1785.             if (av_packet_unpack_dictionary(side_metadata, size, &dict) >= 0)

  1786.                 show_tags(w, dict, SECTION_ID_PACKET_TAGS);

  1787.             av_dict_free(&dict);

  1788.         }

  1789.         writer_print_section_header(w, SECTION_ID_PACKET_SIDE_DATA_LIST);

  1790.         for (i = 0; i < pkt->side_data_elems; i++) {

  1791.             AVPacketSideData *sd = &pkt->side_data[i];

  1792.             const char *name = av_packet_side_data_name(sd->type);

  1793.             writer_print_section_header(w, SECTION_ID_PACKET_SIDE_DATA);

  1794.             print_str("side_data_type", name ? name : "unknown");

  1795.             print_int("side_data_size", sd->size);

  1796.             if (sd->type == AV_PKT_DATA_DISPLAYMATRIX && sd->size >= 9*4) {

  1797.                 writer_print_integers(w, "displaymatrix", sd->data, 9, " %11d", 3, 4, 1);

  1798.                 print_int("rotation", av_display_rotation_get((int32_t *)sd->data));

  1799.             }

  1800.             writer_print_section_footer(w);

  1801.         }

  1802.         writer_print_section_footer(w);

  1803.     }

  1804. 

  1805.     if (do_show_data)

  1806.         writer_print_data(w, "data", pkt->data, pkt->size);

  1807.     writer_print_data_hash(w, "data_hash", pkt->data, pkt->size);

  1808.     writer_print_section_footer(w);

  1809. 

  1810.     av_bprint_finalize(&pbuf, NULL);

  1811.     fflush(stdout);

  1812. }

  1813. 

  1814. static void show_subtitle(WriterContext *w, AVSubtitle *sub, AVStream *stream,

  1815.                           AVFormatContext *fmt_ctx)

  1816. {

  1817.     AVBPrint pbuf;

  1818. 

  1819.     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1820. 

  1821.     writer_print_section_header(w, SECTION_ID_SUBTITLE);

  1822. 

  1823.     print_str ("media_type",         "subtitle");

  1824.     print_ts  ("pts",                 sub->pts);

  1825.     print_time("pts_time",            sub->pts, &AV_TIME_BASE_Q);

  1826.     print_int ("format",              sub->format);

  1827.     print_int ("start_display_time",  sub->start_display_time);

  1828.     print_int ("end_display_time",    sub->end_display_time);

  1829.     print_int ("num_rects",           sub->num_rects);

  1830. 

  1831.     writer_print_section_footer(w);

  1832. 

  1833.     av_bprint_finalize(&pbuf, NULL);

  1834.     fflush(stdout);

  1835. }

  1836. 

  1837. static void show_frame(WriterContext *w, AVFrame *frame, AVStream *stream,

  1838.                        AVFormatContext *fmt_ctx)

  1839. {

  1840.     AVBPrint pbuf;

  1841.     char val_str[128];

  1842.     const char *s;

  1843.     int i;

  1844. 

  1845.     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);

  1846. 

  1847.     writer_print_section_header(w, SECTION_ID_FRAME);

  1848. 

  1849.     s = av_get_media_type_string(stream->codec->codec_type);

  1850.     if (s) print_str    ("media_type", s);

  1851.     else   print_str_opt("media_type", "unknown");

  1852.     print_int("stream_index",           stream->index);

  1853.     print_int("key_frame",              frame->key_frame);

  1854.     print_ts  ("pkt_pts",               frame->pkt_pts);

  1855.     print_time("pkt_pts_time",          frame->pkt_pts, &stream->time_base);

  1856.     print_ts  ("pkt_dts",               frame->pkt_dts);

  1857.     print_time("pkt_dts_time",          frame->pkt_dts, &stream->time_base);

  1858.     print_ts  ("best_effort_timestamp", av_frame_get_best_effort_timestamp(frame));

  1859.     print_time("best_effort_timestamp_time", av_frame_get_best_effort_timestamp(frame), &stream->time_base);

  1860.     print_duration_ts  ("pkt_duration",      av_frame_get_pkt_duration(frame));

  1861.     print_duration_time("pkt_duration_time", av_frame_get_pkt_duration(frame), &stream->time_base);

  1862.     if (av_frame_get_pkt_pos (frame) != -1) print_fmt    ("pkt_pos", "%"PRId64, av_frame_get_pkt_pos(frame));

  1863.     else                      print_str_opt("pkt_pos", "N/A");

  1864.     if (av_frame_get_pkt_size(frame) != -1) print_val    ("pkt_size", av_frame_get_pkt_size(frame), unit_byte_str);

  1865.     else                       print_str_opt("pkt_size", "N/A");

  1866. 

  1867.     switch (stream->codec->codec_type) {

  1868.         AVRational sar;

  1869. 

  1870.     case AVMEDIA_TYPE_VIDEO:

  1871.         print_int("width",                  frame->width);

  1872.         print_int("height",                 frame->height);

  1873.         s = av_get_pix_fmt_name(frame->format);

  1874.         if (s) print_str    ("pix_fmt", s);

  1875.         else   print_str_opt("pix_fmt", "unknown");

  1876.         sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, frame);

  1877.         if (sar.num) {

  1878.             print_q("sample_aspect_ratio", sar, ':');

  1879.         } else {

  1880.             print_str_opt("sample_aspect_ratio", "N/A");

  1881.         }

  1882.         print_fmt("pict_type",              "%c", av_get_picture_type_char(frame->pict_type));

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

  1884.         print_int("display_picture_number", frame->display_picture_number);

  1885.         print_int("interlaced_frame",       frame->interlaced_frame);

  1886.         print_int("top_field_first",        frame->top_field_first);

  1887.         print_int("repeat_pict",            frame->repeat_pict);

  1888.         break;

  1889. 

  1890.     case AVMEDIA_TYPE_AUDIO:

  1891.         s = av_get_sample_fmt_name(frame->format);

  1892.         if (s) print_str    ("sample_fmt", s);

  1893.         else   print_str_opt("sample_fmt", "unknown");

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

  1895.         print_int("channels", av_frame_get_channels(frame));

  1896.         if (av_frame_get_channel_layout(frame)) {

  1897.             av_bprint_clear(&pbuf);

  1898.             av_bprint_channel_layout(&pbuf, av_frame_get_channels(frame),

  1899.                                      av_frame_get_channel_layout(frame));

  1900.             print_str    ("channel_layout", pbuf.str);

  1901.         } else

  1902.             print_str_opt("channel_layout", "unknown");

  1903.         break;

  1904.     }

  1905.     if (do_show_frame_tags)

  1906.         show_tags(w, av_frame_get_metadata(frame), SECTION_ID_FRAME_TAGS);

  1907.     if (frame->nb_side_data) {

  1908.         writer_print_section_header(w, SECTION_ID_FRAME_SIDE_DATA_LIST);

  1909.         for (i = 0; i < frame->nb_side_data; i++) {

  1910.             AVFrameSideData *sd = frame->side_data[i];

  1911.             const char *name;

  1912. 

  1913.             writer_print_section_header(w, SECTION_ID_FRAME_SIDE_DATA);

  1914.             name = av_frame_side_data_name(sd->type);

  1915.             print_str("side_data_type", name ? name : "unknown");

  1916.             print_int("side_data_size", sd->size);

  1917.             if (sd->type == AV_FRAME_DATA_DISPLAYMATRIX && sd->size >= 9*4) {

  1918.                 writer_print_integers(w, "displaymatrix", sd->data, 9, " %11d", 3, 4, 1);

  1919.                 print_int("rotation", av_display_rotation_get((int32_t *)sd->data));

  1920.             }

  1921.             writer_print_section_footer(w);

  1922.         }

  1923.         writer_print_section_footer(w);

  1924.     }

  1925. 

  1926.     writer_print_section_footer(w);

  1927. 

  1928.     av_bprint_finalize(&pbuf, NULL);

  1929.     fflush(stdout);

  1930. }

  1931. 

  1932. static av_always_inline int process_frame(WriterContext *w,

  1933.                                           AVFormatContext *fmt_ctx,

  1934.                                           AVFrame *frame, AVPacket *pkt)

  1935. {

  1936.     AVCodecContext *dec_ctx = fmt_ctx->streams[pkt->stream_index]->codec;

  1937.     AVSubtitle sub;

  1938.     int ret = 0, got_frame = 0;

  1939. 

  1940.     if (dec_ctx->codec) {

  1941.         switch (dec_ctx->codec_type) {

  1942.         case AVMEDIA_TYPE_VIDEO:

  1943.             ret = avcodec_decode_video2(dec_ctx, frame, &got_frame, pkt);

  1944.             break;

  1945. 

  1946.         case AVMEDIA_TYPE_AUDIO:

  1947.             ret = avcodec_decode_audio4(dec_ctx, frame, &got_frame, pkt);

  1948.             break;

  1949. 

  1950.         case AVMEDIA_TYPE_SUBTITLE:

  1951.             ret = avcodec_decode_subtitle2(dec_ctx, &sub, &got_frame, pkt);

  1952.             break;

  1953.         }

  1954.     }

  1955. 

  1956.     if (ret < 0)

  1957.         return ret;

  1958.     ret = FFMIN(ret, pkt->size); /* guard against bogus return values */

  1959.     pkt->data += ret;

  1960.     pkt->size -= ret;

  1961.     if (got_frame) {

  1962.         int is_sub = (dec_ctx->codec_type == AVMEDIA_TYPE_SUBTITLE);

  1963.         nb_streams_frames[pkt->stream_index]++;

  1964.         if (do_show_frames)

  1965.             if (is_sub)

  1966.                 show_subtitle(w, &sub, fmt_ctx->streams[pkt->stream_index], fmt_ctx);

  1967.             else

  1968.                 show_frame(w, frame, fmt_ctx->streams[pkt->stream_index], fmt_ctx);

  1969.         if (is_sub)

  1970.             avsubtitle_free(&sub);

  1971.     }

  1972.     return got_frame;

  1973. }

  1974. 

  1975. static void log_read_interval(const ReadInterval *interval, void *log_ctx, int log_level)

  1976. {

  1977.     av_log(log_ctx, log_level, "id:%d", interval->id);

  1978. 

  1979.     if (interval->has_start) {

  1980.         av_log(log_ctx, log_level, " start:%s%s", interval->start_is_offset ? "+" : "",

  1981.                av_ts2timestr(interval->start, &AV_TIME_BASE_Q));

  1982.     } else {

  1983.         av_log(log_ctx, log_level, " start:N/A");

  1984.     }

  1985. 

  1986.     if (interval->has_end) {

  1987.         av_log(log_ctx, log_level, " end:%s", interval->end_is_offset ? "+" : "");

  1988.         if (interval->duration_frames)

  1989.             av_log(log_ctx, log_level, "#%"PRId64, interval->end);

  1990.         else

  1991.             av_log(log_ctx, log_level, "%s", av_ts2timestr(interval->end, &AV_TIME_BASE_Q));

  1992.     } else {

  1993.         av_log(log_ctx, log_level, " end:N/A");

  1994.     }

  1995. 

  1996.     av_log(log_ctx, log_level, "\n");

  1997. }

  1998. 

  1999. static int read_interval_packets(WriterContext *w, AVFormatContext *fmt_ctx,

  2000.                                  const ReadInterval *interval, int64_t *cur_ts)

  2001. {

  2002.     AVPacket pkt, pkt1;

  2003.     AVFrame *frame = NULL;

  2004.     int ret = 0, i = 0, frame_count = 0;

  2005.     int64_t start = -INT64_MAX, end = interval->end;

  2006.     int has_start = 0, has_end = interval->has_end && !interval->end_is_offset;

  2007. 

  2008.     av_init_packet(&pkt);

  2009. 

  2010.     av_log(NULL, AV_LOG_VERBOSE, "Processing read interval ");

  2011.     log_read_interval(interval, NULL, AV_LOG_VERBOSE);

  2012. 

  2013.     if (interval->has_start) {

  2014.         int64_t target;

  2015.         if (interval->start_is_offset) {

  2016.             if (*cur_ts == AV_NOPTS_VALUE) {

  2017.                 av_log(NULL, AV_LOG_ERROR,

  2018.                        "Could not seek to relative position since current "

  2019.                        "timestamp is not defined\n");

  2020.                 ret = AVERROR(EINVAL);

  2021.                 goto end;

  2022.             }

  2023.             target = *cur_ts + interval->start;

  2024.         } else {

  2025.             target = interval->start;

  2026.         }

  2027. 

  2028.         av_log(NULL, AV_LOG_VERBOSE, "Seeking to read interval start point %s\n",

  2029.                av_ts2timestr(target, &AV_TIME_BASE_Q));

  2030.         if ((ret = avformat_seek_file(fmt_ctx, -1, -INT64_MAX, target, INT64_MAX, 0)) < 0) {

  2031.             av_log(NULL, AV_LOG_ERROR, "Could not seek to position %"PRId64": %s\n",

  2032.                    interval->start, av_err2str(ret));

  2033.             goto end;

  2034.         }

  2035.     }

  2036. 

  2037.     frame = av_frame_alloc();

  2038.     if (!frame) {

  2039.         ret = AVERROR(ENOMEM);

  2040.         goto end;

  2041.     }

  2042.     while (!av_read_frame(fmt_ctx, &pkt)) {

  2043.         if (fmt_ctx->nb_streams > nb_streams) {

  2044.             REALLOCZ_ARRAY_STREAM(nb_streams_frames,  nb_streams, fmt_ctx->nb_streams);

  2045.             REALLOCZ_ARRAY_STREAM(nb_streams_packets, nb_streams, fmt_ctx->nb_streams);

  2046.             REALLOCZ_ARRAY_STREAM(selected_streams,   nb_streams, fmt_ctx->nb_streams);

  2047.             nb_streams = fmt_ctx->nb_streams;

  2048.         }

  2049.         if (selected_streams[pkt.stream_index]) {

  2050.             AVRational tb = fmt_ctx->streams[pkt.stream_index]->time_base;

  2051. 

  2052.             if (pkt.pts != AV_NOPTS_VALUE)

  2053.                 *cur_ts = av_rescale_q(pkt.pts, tb, AV_TIME_BASE_Q);

  2054. 

  2055.             if (!has_start && *cur_ts != AV_NOPTS_VALUE) {

  2056.                 start = *cur_ts;

  2057.                 has_start = 1;

  2058.             }

  2059. 

  2060.             if (has_start && !has_end && interval->end_is_offset) {

  2061.                 end = start + interval->end;

  2062.                 has_end = 1;

  2063.             }

  2064. 

  2065.             if (interval->end_is_offset && interval->duration_frames) {

  2066.                 if (frame_count >= interval->end)

  2067.                     break;

  2068.             } else if (has_end && *cur_ts != AV_NOPTS_VALUE && *cur_ts >= end) {

  2069.                 break;

  2070.             }

  2071. 

  2072.             frame_count++;

  2073.             if (do_read_packets) {

  2074.                 if (do_show_packets)

  2075.                     show_packet(w, fmt_ctx, &pkt, i++);

  2076.                 nb_streams_packets[pkt.stream_index]++;

  2077.             }

  2078.             if (do_read_frames) {

  2079.                 pkt1 = pkt;

  2080.                 while (pkt1.size && process_frame(w, fmt_ctx, frame, &pkt1) > 0);

  2081.             }

  2082.         }

  2083.         av_packet_unref(&pkt);

  2084.     }

  2085.     av_init_packet(&pkt);

  2086.     pkt.data = NULL;

  2087.     pkt.size = 0;

  2088.     //Flush remaining frames that are cached in the decoder

  2089.     for (i = 0; i < fmt_ctx->nb_streams; i++) {

  2090.         pkt.stream_index = i;

  2091.         if (do_read_frames)

  2092.             while (process_frame(w, fmt_ctx, frame, &pkt) > 0);

  2093.     }

  2094. 

  2095. end:

  2096.     av_frame_free(&frame);

  2097.     if (ret < 0) {

  2098.         av_log(NULL, AV_LOG_ERROR, "Could not read packets in interval ");

  2099.         log_read_interval(interval, NULL, AV_LOG_ERROR);

  2100.     }

  2101.     return ret;

  2102. }

  2103. 

  2104. static int read_packets(WriterContext *w, AVFormatContext *fmt_ctx)

  2105. {

  2106.     int i, ret = 0;

  2107.     int64_t cur_ts = fmt_ctx->start_time;

  2108. 

  2109.     if (read_intervals_nb == 0) {

  2110.         ReadInterval interval = (ReadInterval) { .has_start = 0, .has_end = 0 };

  2111.         ret = read_interval_packets(w, fmt_ctx, &interval, &cur_ts);

  2112.     } else {

  2113.         for (i = 0; i < read_intervals_nb; i++) {

  2114.             ret = read_interval_packets(w, fmt_ctx, &read_intervals[i], &cur_ts);

  2115.             if (ret < 0)

  2116.                 break;

  2117.         }

  2118.     }

  2119. 

  2120.     return ret;

  2121. }

  2122. 

  2123. static int show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_idx, int in_program)

  2124. {

  2125.     AVStream *stream = fmt_ctx->streams[stream_idx];

  2126.     AVCodecContext *dec_ctx;

  2127.     const AVCodec *dec;

  2128.     char val_str[128];

  2129.     const char *s;

  2130.     AVRational sar, dar;

  2131.     AVBPrint pbuf;

  2132.     const AVCodecDescriptor *cd;

  2133.     int ret = 0;

  2134. 

  2135.     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);

  2136. 

  2137.     writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM : SECTION_ID_STREAM);

  2138. 

  2139.     print_int("index", stream->index);

  2140. 

  2141.     if ((dec_ctx = stream->codec)) {

  2142.         const char *profile = NULL;

  2143.         dec = dec_ctx->codec;

  2144.         if (dec) {

  2145.             print_str("codec_name", dec->name);

  2146.             if (!do_bitexact) {

  2147.                 if (dec->long_name) print_str    ("codec_long_name", dec->long_name);

  2148.                 else                print_str_opt("codec_long_name", "unknown");

  2149.             }

  2150.         } else if ((cd = avcodec_descriptor_get(stream->codec->codec_id))) {

  2151.             print_str_opt("codec_name", cd->name);

  2152.             if (!do_bitexact) {

  2153.                 print_str_opt("codec_long_name",

  2154.                               cd->long_name ? cd->long_name : "unknown");

  2155.             }

  2156.         } else {

  2157.             print_str_opt("codec_name", "unknown");

  2158.             if (!do_bitexact) {

  2159.                 print_str_opt("codec_long_name", "unknown");

  2160.             }

  2161.         }

  2162. 

  2163.         if (!do_bitexact && dec && (profile = av_get_profile_name(dec, dec_ctx->profile)))

  2164.             print_str("profile", profile);

  2165.         else {

  2166.             if (dec_ctx->profile != FF_PROFILE_UNKNOWN) {

  2167.                 char profile_num[12];

  2168.                 snprintf(profile_num, sizeof(profile_num), "%d", dec_ctx->profile);

  2169.                 print_str("profile", profile_num);

  2170.             } else

  2171.                 print_str_opt("profile", "unknown");

  2172.         }

  2173. 

  2174.         s = av_get_media_type_string(dec_ctx->codec_type);

  2175.         if (s) print_str    ("codec_type", s);

  2176.         else   print_str_opt("codec_type", "unknown");

  2177.         print_q("codec_time_base", dec_ctx->time_base, '/');

  2178. 

  2179.         /* print AVI/FourCC tag */

  2180.         av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);

  2181.         print_str("codec_tag_string",    val_str);

  2182.         print_fmt("codec_tag", "0x%04x", dec_ctx->codec_tag);

  2183. 

  2184.         switch (dec_ctx->codec_type) {

  2185.         case AVMEDIA_TYPE_VIDEO:

  2186.             print_int("width",        dec_ctx->width);

  2187.             print_int("height",       dec_ctx->height);

  2188.             print_int("coded_width",  dec_ctx->coded_width);

  2189.             print_int("coded_height", dec_ctx->coded_height);

  2190.             print_int("has_b_frames", dec_ctx->has_b_frames);

  2191.             sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, NULL);

  2192.             if (sar.den) {

  2193.                 print_q("sample_aspect_ratio", sar, ':');

  2194.                 av_reduce(&dar.num, &dar.den,

  2195.                           dec_ctx->width  * sar.num,

  2196.                           dec_ctx->height * sar.den,

  2197.                           1024*1024);

  2198.                 print_q("display_aspect_ratio", dar, ':');

  2199.             } else {

  2200.                 print_str_opt("sample_aspect_ratio", "N/A");

  2201.                 print_str_opt("display_aspect_ratio", "N/A");

  2202.             }

  2203.             s = av_get_pix_fmt_name(dec_ctx->pix_fmt);

  2204.             if (s) print_str    ("pix_fmt", s);

  2205.             else   print_str_opt("pix_fmt", "unknown");

  2206.             print_int("level",   dec_ctx->level);

  2207.             if (dec_ctx->color_range != AVCOL_RANGE_UNSPECIFIED)

  2208.                 print_str    ("color_range", av_color_range_name(dec_ctx->color_range));

  2209.             else

  2210.                 print_str_opt("color_range", "N/A");

  2211.             s = av_get_colorspace_name(dec_ctx->colorspace);

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

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

  2214. 

  2215.             if (dec_ctx->color_trc != AVCOL_TRC_UNSPECIFIED)

  2216.                 print_str("color_transfer", av_color_transfer_name(dec_ctx->color_trc));

  2217.             else

  2218.                 print_str_opt("color_transfer", av_color_transfer_name(dec_ctx->color_trc));

  2219. 

  2220.             if (dec_ctx->color_primaries != AVCOL_PRI_UNSPECIFIED)

  2221.                 print_str("color_primaries", av_color_primaries_name(dec_ctx->color_primaries));

  2222.             else

  2223.                 print_str_opt("color_primaries", av_color_primaries_name(dec_ctx->color_primaries));

  2224. 

  2225.             if (dec_ctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)

  2226.                 print_str("chroma_location", av_chroma_location_name(dec_ctx->chroma_sample_location));

  2227.             else

  2228.                 print_str_opt("chroma_location", av_chroma_location_name(dec_ctx->chroma_sample_location));

  2229. 

  2230.             if (dec_ctx->timecode_frame_start >= 0) {

  2231.                 char tcbuf[AV_TIMECODE_STR_SIZE];

  2232.                 av_timecode_make_mpeg_tc_string(tcbuf, dec_ctx->timecode_frame_start);

  2233.                 print_str("timecode", tcbuf);

  2234.             } else {

  2235.                 print_str_opt("timecode", "N/A");

  2236.             }

  2237.             print_int("refs", dec_ctx->refs);

  2238.             break;

  2239. 

  2240.         case AVMEDIA_TYPE_AUDIO:

  2241.             s = av_get_sample_fmt_name(dec_ctx->sample_fmt);

  2242.             if (s) print_str    ("sample_fmt", s);

  2243.             else   print_str_opt("sample_fmt", "unknown");

  2244.             print_val("sample_rate",     dec_ctx->sample_rate, unit_hertz_str);

  2245.             print_int("channels",        dec_ctx->channels);

  2246. 

  2247.             if (dec_ctx->channel_layout) {

  2248.                 av_bprint_clear(&pbuf);

  2249.                 av_bprint_channel_layout(&pbuf, dec_ctx->channels, dec_ctx->channel_layout);

  2250.                 print_str    ("channel_layout", pbuf.str);

  2251.             } else {

  2252.                 print_str_opt("channel_layout", "unknown");

  2253.             }

  2254. 

  2255.             print_int("bits_per_sample", av_get_bits_per_sample(dec_ctx->codec_id));

  2256.             break;

  2257. 

  2258.         case AVMEDIA_TYPE_SUBTITLE:

  2259.             if (dec_ctx->width)

  2260.                 print_int("width",       dec_ctx->width);

  2261.             else

  2262.                 print_str_opt("width",   "N/A");

  2263.             if (dec_ctx->height)

  2264.                 print_int("height",      dec_ctx->height);

  2265.             else

  2266.                 print_str_opt("height",  "N/A");

  2267.             break;

  2268.         }

  2269.     } else {

  2270.         print_str_opt("codec_type", "unknown");

  2271.     }

  2272.     if (dec_ctx->codec && dec_ctx->codec->priv_class && show_private_data) {

  2273.         const AVOption *opt = NULL;

  2274.         while (opt = av_opt_next(dec_ctx->priv_data,opt)) {

  2275.             uint8_t *str;

  2276.             if (opt->flags) continue;

  2277.             if (av_opt_get(dec_ctx->priv_data, opt->name, 0, &str) >= 0) {

  2278.                 print_str(opt->name, str);

  2279.                 av_free(str);

  2280.             }

  2281.         }

  2282.     }

  2283. 

  2284.     if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS) print_fmt    ("id", "0x%x", stream->id);

  2285.     else                                          print_str_opt("id", "N/A");

  2286.     print_q("r_frame_rate",   stream->r_frame_rate,   '/');

  2287.     print_q("avg_frame_rate", stream->avg_frame_rate, '/');

  2288.     print_q("time_base",      stream->time_base,      '/');

  2289.     print_ts  ("start_pts",   stream->start_time);

  2290.     print_time("start_time",  stream->start_time, &stream->time_base);

  2291.     print_ts  ("duration_ts", stream->duration);

  2292.     print_time("duration",    stream->duration, &stream->time_base);

  2293.     if (dec_ctx->bit_rate > 0) print_val    ("bit_rate", dec_ctx->bit_rate, unit_bit_per_second_str);

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

  2295.     if (dec_ctx->rc_max_rate > 0) print_val ("max_bit_rate", dec_ctx->rc_max_rate, unit_bit_per_second_str);

  2296.     else                       print_str_opt("max_bit_rate", "N/A");

  2297.     if (dec_ctx->bits_per_raw_sample > 0) print_fmt("bits_per_raw_sample", "%d", dec_ctx->bits_per_raw_sample);

  2298.     else                       print_str_opt("bits_per_raw_sample", "N/A");

  2299.     if (stream->nb_frames) print_fmt    ("nb_frames", "%"PRId64, stream->nb_frames);

  2300.     else                   print_str_opt("nb_frames", "N/A");

  2301.     if (nb_streams_frames[stream_idx])  print_fmt    ("nb_read_frames", "%"PRIu64, nb_streams_frames[stream_idx]);

  2302.     else                                print_str_opt("nb_read_frames", "N/A");

  2303.     if (nb_streams_packets[stream_idx]) print_fmt    ("nb_read_packets", "%"PRIu64, nb_streams_packets[stream_idx]);

  2304.     else                                print_str_opt("nb_read_packets", "N/A");

  2305.     if (do_show_data)

  2306.         writer_print_data(w, "extradata", dec_ctx->extradata,

  2307.                                           dec_ctx->extradata_size);

  2308.     writer_print_data_hash(w, "extradata_hash", dec_ctx->extradata,

  2309.                                                 dec_ctx->extradata_size);

  2310. 

  2311.     /* Print disposition information */

  2312. #define PRINT_DISPOSITION(flagname, name) do {                                \

  2313.         print_int(name, !!(stream->disposition & AV_DISPOSITION_##flagname)); \

  2314.     } while (0)

  2315. 

  2316.     if (do_show_stream_disposition) {

  2317.     writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM_DISPOSITION : SECTION_ID_STREAM_DISPOSITION);

  2318.     PRINT_DISPOSITION(DEFAULT,          "default");

  2319.     PRINT_DISPOSITION(DUB,              "dub");

  2320.     PRINT_DISPOSITION(ORIGINAL,         "original");

  2321.     PRINT_DISPOSITION(COMMENT,          "comment");

  2322.     PRINT_DISPOSITION(LYRICS,           "lyrics");

  2323.     PRINT_DISPOSITION(KARAOKE,          "karaoke");

  2324.     PRINT_DISPOSITION(FORCED,           "forced");

  2325.     PRINT_DISPOSITION(HEARING_IMPAIRED, "hearing_impaired");

  2326.     PRINT_DISPOSITION(VISUAL_IMPAIRED,  "visual_impaired");

  2327.     PRINT_DISPOSITION(CLEAN_EFFECTS,    "clean_effects");

  2328.     PRINT_DISPOSITION(ATTACHED_PIC,     "attached_pic");

  2329.     writer_print_section_footer(w);

  2330.     }

  2331. 

  2332.     if (do_show_stream_tags)

  2333.         ret = show_tags(w, stream->metadata, in_program ? SECTION_ID_PROGRAM_STREAM_TAGS : SECTION_ID_STREAM_TAGS);

  2334. 

  2335.     if (stream->nb_side_data) {

  2336.         int i;

  2337.         writer_print_section_header(w, SECTION_ID_STREAM_SIDE_DATA_LIST);

  2338.         for (i = 0; i < stream->nb_side_data; i++) {

  2339.             AVPacketSideData *sd = &stream->side_data[i];

  2340.             const char *name = av_packet_side_data_name(sd->type);

  2341. 

  2342.             writer_print_section_header(w, SECTION_ID_STREAM_SIDE_DATA);

  2343.             print_str("side_data_type", name ? name : "unknown");

  2344.             print_int("side_data_size", sd->size);

  2345.             if (sd->type == AV_PKT_DATA_DISPLAYMATRIX && sd->size >= 9*4) {

  2346.                 writer_print_integers(w, "displaymatrix", sd->data, 9, " %11d", 3, 4, 1);

  2347.                 print_int("rotation", av_display_rotation_get((int32_t *)sd->data));

  2348.             }

  2349.             writer_print_section_footer(w);

  2350.         }

  2351.         writer_print_section_footer(w);

  2352.     }

  2353. 

  2354.     writer_print_section_footer(w);

  2355.     av_bprint_finalize(&pbuf, NULL);

  2356.     fflush(stdout);

  2357. 

  2358.     return ret;

  2359. }

  2360. 

  2361. static int show_streams(WriterContext *w, AVFormatContext *fmt_ctx)

  2362. {

  2363.     int i, ret = 0;

  2364. 

  2365.     writer_print_section_header(w, SECTION_ID_STREAMS);

  2366.     for (i = 0; i < fmt_ctx->nb_streams; i++)

  2367.         if (selected_streams[i]) {

  2368.             ret = show_stream(w, fmt_ctx, i, 0);

  2369.             if (ret < 0)

  2370.                 break;

  2371.         }

  2372.     writer_print_section_footer(w);

  2373. 

  2374.     return ret;

  2375. }

  2376. 

  2377. static int show_program(WriterContext *w, AVFormatContext *fmt_ctx, AVProgram *program)

  2378. {

  2379.     int i, ret = 0;

  2380. 

  2381.     writer_print_section_header(w, SECTION_ID_PROGRAM);

  2382.     print_int("program_id", program->id);

  2383.     print_int("program_num", program->program_num);

  2384.     print_int("nb_streams", program->nb_stream_indexes);

  2385.     print_int("pmt_pid", program->pmt_pid);

  2386.     print_int("pcr_pid", program->pcr_pid);

  2387.     print_ts("start_pts", program->start_time);

  2388.     print_time("start_time", program->start_time, &AV_TIME_BASE_Q);

  2389.     print_ts("end_pts", program->end_time);

  2390.     print_time("end_time", program->end_time, &AV_TIME_BASE_Q);

  2391.     if (do_show_program_tags)

  2392.         ret = show_tags(w, program->metadata, SECTION_ID_PROGRAM_TAGS);

  2393.     if (ret < 0)

  2394.         goto end;

  2395. 

  2396.     writer_print_section_header(w, SECTION_ID_PROGRAM_STREAMS);

  2397.     for (i = 0; i < program->nb_stream_indexes; i++) {

  2398.         if (selected_streams[program->stream_index[i]]) {

  2399.             ret = show_stream(w, fmt_ctx, program->stream_index[i], 1);

  2400.             if (ret < 0)

  2401.                 break;

  2402.         }

  2403.     }

  2404.     writer_print_section_footer(w);

  2405. 

  2406. end:

  2407.     writer_print_section_footer(w);

  2408.     return ret;

  2409. }

  2410. 

  2411. static int show_programs(WriterContext *w, AVFormatContext *fmt_ctx)

  2412. {

  2413.     int i, ret = 0;

  2414. 

  2415.     writer_print_section_header(w, SECTION_ID_PROGRAMS);

  2416.     for (i = 0; i < fmt_ctx->nb_programs; i++) {

  2417.         AVProgram *program = fmt_ctx->programs[i];

  2418.         if (!program)

  2419.             continue;

  2420.         ret = show_program(w, fmt_ctx, program);

  2421.         if (ret < 0)

  2422.             break;

  2423.     }

  2424.     writer_print_section_footer(w);

  2425.     return ret;

  2426. }

  2427. 

  2428. static int show_chapters(WriterContext *w, AVFormatContext *fmt_ctx)

  2429. {

  2430.     int i, ret = 0;

  2431. 

  2432.     writer_print_section_header(w, SECTION_ID_CHAPTERS);

  2433.     for (i = 0; i < fmt_ctx->nb_chapters; i++) {

  2434.         AVChapter *chapter = fmt_ctx->chapters[i];

  2435. 

  2436.         writer_print_section_header(w, SECTION_ID_CHAPTER);

  2437.         print_int("id", chapter->id);

  2438.         print_q  ("time_base", chapter->time_base, '/');

  2439.         print_int("start", chapter->start);

  2440.         print_time("start_time", chapter->start, &chapter->time_base);

  2441.         print_int("end", chapter->end);

  2442.         print_time("end_time", chapter->end, &chapter->time_base);

  2443.         if (do_show_chapter_tags)

  2444.             ret = show_tags(w, chapter->metadata, SECTION_ID_CHAPTER_TAGS);

  2445.         writer_print_section_footer(w);

  2446.     }

  2447.     writer_print_section_footer(w);

  2448. 

  2449.     return ret;

  2450. }

  2451. 

  2452. static int show_format(WriterContext *w, AVFormatContext *fmt_ctx)

  2453. {

  2454.     char val_str[128];

  2455.     int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;

  2456.     int ret = 0;

  2457. 

  2458.     writer_print_section_header(w, SECTION_ID_FORMAT);

  2459.     print_str_validate("filename", fmt_ctx->filename);

  2460.     print_int("nb_streams",       fmt_ctx->nb_streams);

  2461.     print_int("nb_programs",      fmt_ctx->nb_programs);

  2462.     print_str("format_name",      fmt_ctx->iformat->name);

  2463.     if (!do_bitexact) {

  2464.         if (fmt_ctx->iformat->long_name) print_str    ("format_long_name", fmt_ctx->iformat->long_name);

  2465.         else                             print_str_opt("format_long_name", "unknown");

  2466.     }

  2467.     print_time("start_time",      fmt_ctx->start_time, &AV_TIME_BASE_Q);

  2468.     print_time("duration",        fmt_ctx->duration,   &AV_TIME_BASE_Q);

  2469.     if (size >= 0) print_val    ("size", size, unit_byte_str);

  2470.     else           print_str_opt("size", "N/A");

  2471.     if (fmt_ctx->bit_rate > 0) print_val    ("bit_rate", fmt_ctx->bit_rate, unit_bit_per_second_str);

  2472.     else                       print_str_opt("bit_rate", "N/A");

  2473.     print_int("probe_score", av_format_get_probe_score(fmt_ctx));

  2474.     if (do_show_format_tags)

  2475.         ret = show_tags(w, fmt_ctx->metadata, SECTION_ID_FORMAT_TAGS);

  2476. 

  2477.     writer_print_section_footer(w);

  2478.     fflush(stdout);

  2479.     return ret;

  2480. }

  2481. 

  2482. static void show_error(WriterContext *w, int err)

  2483. {

  2484.     char errbuf[128];

  2485.     const char *errbuf_ptr = errbuf;

  2486. 

  2487.     if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)

  2488.         errbuf_ptr = strerror(AVUNERROR(err));

  2489. 

  2490.     writer_print_section_header(w, SECTION_ID_ERROR);

  2491.     print_int("code", err);

  2492.     print_str("string", errbuf_ptr);

  2493.     writer_print_section_footer(w);

  2494. }

  2495. 

  2496. static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)

  2497. {

  2498.     int err, i, orig_nb_streams;

  2499.     AVFormatContext *fmt_ctx = NULL;

  2500.     AVDictionaryEntry *t;

  2501.     AVDictionary **opts;

  2502.     int scan_all_pmts_set = 0;

  2503. 

  2504.     if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {

  2505.         av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);

  2506.         scan_all_pmts_set = 1;

  2507.     }

  2508.     if ((err = avformat_open_input(&fmt_ctx, filename,

  2509.                                    iformat, &format_opts)) < 0) {

  2510.         print_error(filename, err);

  2511.         return err;

  2512.     }

  2513.     *fmt_ctx_ptr = fmt_ctx;

  2514.     if (scan_all_pmts_set)

  2515.         av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);

  2516.     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {

  2517.         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);

  2518.         return AVERROR_OPTION_NOT_FOUND;

  2519.     }

  2520. 

  2521.     /* fill the streams in the format context */

  2522.     opts = setup_find_stream_info_opts(fmt_ctx, codec_opts);

  2523.     orig_nb_streams = fmt_ctx->nb_streams;

  2524. 

  2525.     err = avformat_find_stream_info(fmt_ctx, opts);

  2526. 

  2527.     for (i = 0; i < orig_nb_streams; i++)

  2528.         av_dict_free(&opts[i]);

  2529.     av_freep(&opts);

  2530. 

  2531.     if (err < 0) {

  2532.         print_error(filename, err);

  2533.         return err;

  2534.     }

  2535. 

  2536.     av_dump_format(fmt_ctx, 0, filename, 0);

  2537. 

  2538.     /* bind a decoder to each input stream */

  2539.     for (i = 0; i < fmt_ctx->nb_streams; i++) {

  2540.         AVStream *stream = fmt_ctx->streams[i];

  2541.         AVCodec *codec;

  2542. 

  2543.         if (stream->codec->codec_id == AV_CODEC_ID_PROBE) {

  2544.             av_log(NULL, AV_LOG_WARNING,

  2545.                    "Failed to probe codec for input stream %d\n",

  2546.                     stream->index);

  2547.         } else if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {

  2548.             av_log(NULL, AV_LOG_WARNING,

  2549.                     "Unsupported codec with id %d for input stream %d\n",

  2550.                     stream->codec->codec_id, stream->index);

  2551.         } else {

  2552.             AVDictionary *opts = filter_codec_opts(codec_opts, stream->codec->codec_id,

  2553.                                                    fmt_ctx, stream, codec);

  2554.             if (avcodec_open2(stream->codec, codec, &opts) < 0) {

  2555.                 av_log(NULL, AV_LOG_WARNING, "Could not open codec for input stream %d\n",

  2556.                        stream->index);

  2557.             }

  2558.             if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {

  2559.                 av_log(NULL, AV_LOG_ERROR, "Option %s for input stream %d not found\n",

  2560.                        t->key, stream->index);

  2561.                 return AVERROR_OPTION_NOT_FOUND;

  2562.             }

  2563.         }

  2564.     }

  2565. 

  2566.     *fmt_ctx_ptr = fmt_ctx;

  2567.     return 0;

  2568. }

  2569. 

  2570. static void close_input_file(AVFormatContext **ctx_ptr)

  2571. {

  2572.     int i;

  2573.     AVFormatContext *fmt_ctx = *ctx_ptr;

  2574. 

  2575.     /* close decoder for each stream */

  2576.     for (i = 0; i < fmt_ctx->nb_streams; i++)

  2577.         if (fmt_ctx->streams[i]->codec->codec_id != AV_CODEC_ID_NONE)

  2578.             avcodec_close(fmt_ctx->streams[i]->codec);

  2579. 

  2580.     avformat_close_input(ctx_ptr);

  2581. }

  2582. 

  2583. static int probe_file(WriterContext *wctx, const char *filename)

  2584. {

  2585.     AVFormatContext *fmt_ctx = NULL;

  2586.     int ret, i;

  2587.     int section_id;

  2588. 

  2589.     do_read_frames = do_show_frames || do_count_frames;

  2590.     do_read_packets = do_show_packets || do_count_packets;

  2591. 

  2592.     ret = open_input_file(&fmt_ctx, filename);

  2593.     if (ret < 0)

  2594.         goto end;

  2595. 

  2596. #define CHECK_END if (ret < 0) goto end

  2597. 

  2598.     nb_streams = fmt_ctx->nb_streams;

  2599.     REALLOCZ_ARRAY_STREAM(nb_streams_frames,0,fmt_ctx->nb_streams);

  2600.     REALLOCZ_ARRAY_STREAM(nb_streams_packets,0,fmt_ctx->nb_streams);

  2601.     REALLOCZ_ARRAY_STREAM(selected_streams,0,fmt_ctx->nb_streams);

  2602. 

  2603.     for (i = 0; i < fmt_ctx->nb_streams; i++) {

  2604.         if (stream_specifier) {

  2605.             ret = avformat_match_stream_specifier(fmt_ctx,

  2606.                                                   fmt_ctx->streams[i],

  2607.                                                   stream_specifier);

  2608.             CHECK_END;

  2609.             else

  2610.                 selected_streams[i] = ret;

  2611.             ret = 0;

  2612.         } else {

  2613.             selected_streams[i] = 1;

  2614.         }

  2615.     }

  2616. 

  2617.     if (do_read_frames || do_read_packets) {

  2618.         if (do_show_frames && do_show_packets &&

  2619.             wctx->writer->flags & WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER)

  2620.             section_id = SECTION_ID_PACKETS_AND_FRAMES;

  2621.         else if (do_show_packets && !do_show_frames)

  2622.             section_id = SECTION_ID_PACKETS;

  2623.         else // (!do_show_packets && do_show_frames)

  2624.             section_id = SECTION_ID_FRAMES;

  2625.         if (do_show_frames || do_show_packets)

  2626.             writer_print_section_header(wctx, section_id);

  2627.         ret = read_packets(wctx, fmt_ctx);

  2628.         if (do_show_frames || do_show_packets)

  2629.             writer_print_section_footer(wctx);

  2630.         CHECK_END;

  2631.     }

  2632. 

  2633.     if (do_show_programs) {

  2634.         ret = show_programs(wctx, fmt_ctx);

  2635.         CHECK_END;

  2636.     }

  2637. 

  2638.     if (do_show_streams) {

  2639.         ret = show_streams(wctx, fmt_ctx);

  2640.         CHECK_END;

  2641.     }

  2642.     if (do_show_chapters) {

  2643.         ret = show_chapters(wctx, fmt_ctx);

  2644.         CHECK_END;

  2645.     }

  2646.     if (do_show_format) {

  2647.         ret = show_format(wctx, fmt_ctx);

  2648.         CHECK_END;

  2649.     }

  2650. 

  2651. end:

  2652.     if (fmt_ctx)

  2653.         close_input_file(&fmt_ctx);

  2654.     av_freep(&nb_streams_frames);

  2655.     av_freep(&nb_streams_packets);

  2656.     av_freep(&selected_streams);

  2657. 

  2658.     return ret;

  2659. }

  2660. 

  2661. static void show_usage(void)

  2662. {

  2663.     av_log(NULL, AV_LOG_INFO, "Simple multimedia streams analyzer\n");

  2664.     av_log(NULL, AV_LOG_INFO, "usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);

  2665.     av_log(NULL, AV_LOG_INFO, "\n");

  2666. }

  2667. 

  2668. static void ffprobe_show_program_version(WriterContext *w)

  2669. {

  2670.     AVBPrint pbuf;

  2671.     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);

  2672. 

  2673.     writer_print_section_header(w, SECTION_ID_PROGRAM_VERSION);

  2674.     print_str("version", FFMPEG_VERSION);

  2675.     print_fmt("copyright", "Copyright (c) %d-%d the FFmpeg developers",

  2676.               program_birth_year, CONFIG_THIS_YEAR);

  2677.     print_str("compiler_ident", CC_IDENT);

  2678.     print_str("configuration", FFMPEG_CONFIGURATION);

  2679.     writer_print_section_footer(w);

  2680. 

  2681.     av_bprint_finalize(&pbuf, NULL);

  2682. }

  2683. 

  2684. #define SHOW_LIB_VERSION(libname, LIBNAME)                              \

  2685.     do {                                                                \

  2686.         if (CONFIG_##LIBNAME) {                                         \

  2687.             unsigned int version = libname##_version();                 \

  2688.             writer_print_section_header(w, SECTION_ID_LIBRARY_VERSION); \

  2689.             print_str("name",    "lib" #libname);                       \

  2690.             print_int("major",   LIB##LIBNAME##_VERSION_MAJOR);         \

  2691.             print_int("minor",   LIB##LIBNAME##_VERSION_MINOR);         \

  2692.             print_int("micro",   LIB##LIBNAME##_VERSION_MICRO);         \

  2693.             print_int("version", version);                              \

  2694.             print_str("ident",   LIB##LIBNAME##_IDENT);                 \

  2695.             writer_print_section_footer(w);                             \

  2696.         }                                                               \

  2697.     } while (0)

  2698. 

  2699. static void ffprobe_show_library_versions(WriterContext *w)

  2700. {

  2701.     writer_print_section_header(w, SECTION_ID_LIBRARY_VERSIONS);

  2702.     SHOW_LIB_VERSION(avutil,     AVUTIL);

  2703.     SHOW_LIB_VERSION(avcodec,    AVCODEC);

  2704.     SHOW_LIB_VERSION(avformat,   AVFORMAT);

  2705.     SHOW_LIB_VERSION(avdevice,   AVDEVICE);

  2706.     SHOW_LIB_VERSION(avfilter,   AVFILTER);

  2707.     SHOW_LIB_VERSION(swscale,    SWSCALE);

  2708.     SHOW_LIB_VERSION(swresample, SWRESAMPLE);

  2709.     SHOW_LIB_VERSION(postproc,   POSTPROC);

  2710.     writer_print_section_footer(w);

  2711. }

  2712. 

  2713. #define PRINT_PIX_FMT_FLAG(flagname, name)                                \

  2714.     do {                                                                  \

  2715.         print_int(name, !!(pixdesc->flags & AV_PIX_FMT_FLAG_##flagname)); \

  2716.     } while (0)

  2717. 

  2718. static void ffprobe_show_pixel_formats(WriterContext *w)

  2719. {

  2720.     const AVPixFmtDescriptor *pixdesc = NULL;

  2721.     int i, n;

  2722. 

  2723.     writer_print_section_header(w, SECTION_ID_PIXEL_FORMATS);

  2724.     while (pixdesc = av_pix_fmt_desc_next(pixdesc)) {

  2725.         writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT);

  2726.         print_str("name", pixdesc->name);

  2727.         print_int("nb_components", pixdesc->nb_components);

  2728.         if ((pixdesc->nb_components >= 3) && !(pixdesc->flags & AV_PIX_FMT_FLAG_RGB)) {

  2729.             print_int    ("log2_chroma_w", pixdesc->log2_chroma_w);

  2730.             print_int    ("log2_chroma_h", pixdesc->log2_chroma_h);

  2731.         } else {

  2732.             print_str_opt("log2_chroma_w", "N/A");

  2733.             print_str_opt("log2_chroma_h", "N/A");

  2734.         }

  2735.         n = av_get_bits_per_pixel(pixdesc);

  2736.         if (n) print_int    ("bits_per_pixel", n);

  2737.         else   print_str_opt("bits_per_pixel", "N/A");

  2738.         if (do_show_pixel_format_flags) {

  2739.             writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_FLAGS);

  2740.             PRINT_PIX_FMT_FLAG(BE,        "big_endian");

  2741.             PRINT_PIX_FMT_FLAG(PAL,       "palette");

  2742.             PRINT_PIX_FMT_FLAG(BITSTREAM, "bitstream");

  2743.             PRINT_PIX_FMT_FLAG(HWACCEL,   "hwaccel");

  2744.             PRINT_PIX_FMT_FLAG(PLANAR,    "planar");

  2745.             PRINT_PIX_FMT_FLAG(RGB,       "rgb");

  2746.             PRINT_PIX_FMT_FLAG(PSEUDOPAL, "pseudopal");

  2747.             PRINT_PIX_FMT_FLAG(ALPHA,     "alpha");

  2748.             writer_print_section_footer(w);

  2749.         }

  2750.         if (do_show_pixel_format_components && (pixdesc->nb_components > 0)) {

  2751.             writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_COMPONENTS);

  2752.             for (i = 0; i < pixdesc->nb_components; i++) {

  2753.                 writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_COMPONENT);

  2754.                 print_int("index", i + 1);

  2755.                 print_int("bit_depth", pixdesc->comp[i].depth);

  2756.                 writer_print_section_footer(w);

  2757.             }

  2758.             writer_print_section_footer(w);

  2759.         }

  2760.         writer_print_section_footer(w);

  2761.     }

  2762.     writer_print_section_footer(w);

  2763. }

  2764. 

  2765. static int opt_format(void *optctx, const char *opt, const char *arg)

  2766. {

  2767.     iformat = av_find_input_format(arg);

  2768.     if (!iformat) {

  2769.         av_log(NULL, AV_LOG_ERROR, "Unknown input format: %s\n", arg);

  2770.         return AVERROR(EINVAL);

  2771.     }

  2772.     return 0;

  2773. }

  2774. 

  2775. static inline void mark_section_show_entries(SectionID section_id,

  2776.                                              int show_all_entries, AVDictionary *entries)

  2777. {

  2778.     struct section *section = &sections[section_id];

  2779. 

  2780.     section->show_all_entries = show_all_entries;

  2781.     if (show_all_entries) {

  2782.         SectionID *id;

  2783.         for (id = section->children_ids; *id != -1; id++)

  2784.             mark_section_show_entries(*id, show_all_entries, entries);

  2785.     } else {

  2786.         av_dict_copy(&section->entries_to_show, entries, 0);

  2787.     }

  2788. }

  2789. 

  2790. static int match_section(const char *section_name,

  2791.                          int show_all_entries, AVDictionary *entries)

  2792. {

  2793.     int i, ret = 0;

  2794. 

  2795.     for (i = 0; i < FF_ARRAY_ELEMS(sections); i++) {

  2796.         const struct section *section = &sections[i];

  2797.         if (!strcmp(section_name, section->name) ||

  2798.             (section->unique_name && !strcmp(section_name, section->unique_name))) {

  2799.             av_log(NULL, AV_LOG_DEBUG,

  2800.                    "'%s' matches section with unique name '%s'\n", section_name,

  2801.                    (char *)av_x_if_null(section->unique_name, section->name));

  2802.             ret++;

  2803.             mark_section_show_entries(section->id, show_all_entries, entries);

  2804.         }

  2805.     }

  2806.     return ret;

  2807. }

  2808. 

  2809. static int opt_show_entries(void *optctx, const char *opt, const char *arg)

  2810. {

  2811.     const char *p = arg;

  2812.     int ret = 0;

  2813. 

  2814.     while (*p) {

  2815.         AVDictionary *entries = NULL;

  2816.         char *section_name = av_get_token(&p, "=:");

  2817.         int show_all_entries = 0;

  2818. 

  2819.         if (!section_name) {

  2820.             av_log(NULL, AV_LOG_ERROR,

  2821.                    "Missing section name for option '%s'\n", opt);

  2822.             return AVERROR(EINVAL);

  2823.         }

  2824. 

  2825.         if (*p == '=') {

  2826.             p++;

  2827.             while (*p && *p != ':') {

  2828.                 char *entry = av_get_token(&p, ",:");

  2829.                 if (!entry)

  2830.                     break;

  2831.                 av_log(NULL, AV_LOG_VERBOSE,

  2832.                        "Adding '%s' to the entries to show in section '%s'\n",

  2833.                        entry, section_name);

  2834.                 av_dict_set(&entries, entry, "", AV_DICT_DONT_STRDUP_KEY);

  2835.                 if (*p == ',')

  2836.                     p++;

  2837.             }

  2838.         } else {

  2839.             show_all_entries = 1;

  2840.         }

  2841. 

  2842.         ret = match_section(section_name, show_all_entries, entries);

  2843.         if (ret == 0) {

  2844.             av_log(NULL, AV_LOG_ERROR, "No match for section '%s'\n", section_name);

  2845.             ret = AVERROR(EINVAL);

  2846.         }

  2847.         av_dict_free(&entries);

  2848.         av_free(section_name);

  2849. 

  2850.         if (ret <= 0)

  2851.             break;

  2852.         if (*p)

  2853.             p++;

  2854.     }

  2855. 

  2856.     return ret;

  2857. }

  2858. 

  2859. static int opt_show_format_entry(void *optctx, const char *opt, const char *arg)

  2860. {

  2861.     char *buf = av_asprintf("format=%s", arg);

  2862.     int ret;

  2863. 

  2864.     if (!buf)

  2865.         return AVERROR(ENOMEM);

  2866. 

  2867.     av_log(NULL, AV_LOG_WARNING,

  2868.            "Option '%s' is deprecated, use '-show_entries format=%s' instead\n",

  2869.            opt, arg);

  2870.     ret = opt_show_entries(optctx, opt, buf);

  2871.     av_free(buf);

  2872.     return ret;

  2873. }

  2874. 

  2875. static void opt_input_file(void *optctx, const char *arg)

  2876. {

  2877.     if (input_filename) {

  2878.         av_log(NULL, AV_LOG_ERROR,

  2879.                 "Argument '%s' provided as input filename, but '%s' was already specified.\n",

  2880.                 arg, input_filename);

  2881.         exit_program(1);

  2882.     }

  2883.     if (!strcmp(arg, "-"))

  2884.         arg = "pipe:";

  2885.     input_filename = arg;

  2886. }

  2887. 

  2888. static int opt_input_file_i(void *optctx, const char *opt, const char *arg)

  2889. {

  2890.     opt_input_file(optctx, arg);

  2891.     return 0;

  2892. }

  2893. 

  2894. void show_help_default(const char *opt, const char *arg)

  2895. {

  2896.     av_log_set_callback(log_callback_help);

  2897.     show_usage();

  2898.     show_help_options(options, "Main options:", 0, 0, 0);

  2899.     printf("\n");

  2900. 

  2901.     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);

  2902. }

  2903. 

  2904. /**

  2905.  * Parse interval specification, according to the format:

  2906.  * INTERVAL ::= [START|+START_OFFSET][%[END|+END_OFFSET]]

  2907.  * INTERVALS ::= INTERVAL[,INTERVALS]

  2908. */

  2909. static int parse_read_interval(const char *interval_spec,

  2910.                                ReadInterval *interval)

  2911. {

  2912.     int ret = 0;

  2913.     char *next, *p, *spec = av_strdup(interval_spec);

  2914.     if (!spec)

  2915.         return AVERROR(ENOMEM);

  2916. 

  2917.     if (!*spec) {

  2918.         av_log(NULL, AV_LOG_ERROR, "Invalid empty interval specification\n");

  2919.         ret = AVERROR(EINVAL);

  2920.         goto end;

  2921.     }

  2922. 

  2923.     p = spec;

  2924.     next = strchr(spec, '%');

  2925.     if (next)

  2926.         *next++ = 0;

  2927. 

  2928.     /* parse first part */

  2929.     if (*p) {

  2930.         interval->has_start = 1;

  2931. 

  2932.         if (*p == '+') {

  2933.             interval->start_is_offset = 1;

  2934.             p++;

  2935.         } else {

  2936.             interval->start_is_offset = 0;

  2937.         }

  2938. 

  2939.         ret = av_parse_time(&interval->start, p, 1);

  2940.         if (ret < 0) {

  2941.             av_log(NULL, AV_LOG_ERROR, "Invalid interval start specification '%s'\n", p);

  2942.             goto end;

  2943.         }

  2944.     } else {

  2945.         interval->has_start = 0;

  2946.     }

  2947. 

  2948.     /* parse second part */

  2949.     p = next;

  2950.     if (p && *p) {

  2951.         int64_t us;

  2952.         interval->has_end = 1;

  2953. 

  2954.         if (*p == '+') {

  2955.             interval->end_is_offset = 1;

  2956.             p++;

  2957.         } else {

  2958.             interval->end_is_offset = 0;

  2959.         }

  2960. 

  2961.         if (interval->end_is_offset && *p == '#') {

  2962.             long long int lli;

  2963.             char *tail;

  2964.             interval->duration_frames = 1;

  2965.             p++;

  2966.             lli = strtoll(p, &tail, 10);

  2967.             if (*tail || lli < 0) {

  2968.                 av_log(NULL, AV_LOG_ERROR,

  2969.                        "Invalid or negative value '%s' for duration number of frames\n", p);

  2970.                 goto end;

  2971.             }

  2972.             interval->end = lli;

  2973.         } else {

  2974.             ret = av_parse_time(&us, p, 1);

  2975.             if (ret < 0) {

  2976.                 av_log(NULL, AV_LOG_ERROR, "Invalid interval end/duration specification '%s'\n", p);

  2977.                 goto end;

  2978.             }

  2979.             interval->end = us;

  2980.         }

  2981.     } else {

  2982.         interval->has_end = 0;

  2983.     }

  2984. 

  2985. end:

  2986.     av_free(spec);

  2987.     return ret;

  2988. }

  2989. 

  2990. static int parse_read_intervals(const char *intervals_spec)

  2991. {

  2992.     int ret, n, i;

  2993.     char *p, *spec = av_strdup(intervals_spec);

  2994.     if (!spec)

  2995.         return AVERROR(ENOMEM);

  2996. 

  2997.     /* preparse specification, get number of intervals */

  2998.     for (n = 0, p = spec; *p; p++)

  2999.         if (*p == ',')

  3000.             n++;

  3001.     n++;

  3002. 

  3003.     read_intervals = av_malloc_array(n, sizeof(*read_intervals));

  3004.     if (!read_intervals) {

  3005.         ret = AVERROR(ENOMEM);

  3006.         goto end;

  3007.     }

  3008.     read_intervals_nb = n;

  3009. 

  3010.     /* parse intervals */

  3011.     p = spec;

  3012.     for (i = 0; p; i++) {

  3013.         char *next;

  3014. 

  3015.         av_assert0(i < read_intervals_nb);

  3016.         next = strchr(p, ',');

  3017.         if (next)

  3018.             *next++ = 0;

  3019. 

  3020.         read_intervals[i].id = i;

  3021.         ret = parse_read_interval(p, &read_intervals[i]);

  3022.         if (ret < 0) {

  3023.             av_log(NULL, AV_LOG_ERROR, "Error parsing read interval #%d '%s'\n",

  3024.                    i, p);

  3025.             goto end;

  3026.         }

  3027.         av_log(NULL, AV_LOG_VERBOSE, "Parsed log interval ");

  3028.         log_read_interval(&read_intervals[i], NULL, AV_LOG_VERBOSE);

  3029.         p = next;

  3030.     }

  3031.     av_assert0(i == read_intervals_nb);

  3032. 

  3033. end:

  3034.     av_free(spec);

  3035.     return ret;

  3036. }

  3037. 

  3038. static int opt_read_intervals(void *optctx, const char *opt, const char *arg)

  3039. {

  3040.     return parse_read_intervals(arg);

  3041. }

  3042. 

  3043. static int opt_pretty(void *optctx, const char *opt, const char *arg)

  3044. {

  3045.     show_value_unit              = 1;

  3046.     use_value_prefix             = 1;

  3047.     use_byte_value_binary_prefix = 1;

  3048.     use_value_sexagesimal_format = 1;

  3049.     return 0;

  3050. }

  3051. 

  3052. static void print_section(SectionID id, int level)

  3053. {

  3054.     const SectionID *pid;

  3055.     const struct section *section = &sections[id];

  3056.     printf("%c%c%c",

  3057.            section->flags & SECTION_FLAG_IS_WRAPPER           ? 'W' : '.',

  3058.            section->flags & SECTION_FLAG_IS_ARRAY             ? 'A' : '.',

  3059.            section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS  ? 'V' : '.');

  3060.     printf("%*c  %s", level * 4, ' ', section->name);

  3061.     if (section->unique_name)

  3062.         printf("/%s", section->unique_name);

  3063.     printf("\n");

  3064. 

  3065.     for (pid = section->children_ids; *pid != -1; pid++)

  3066.         print_section(*pid, level+1);

  3067. }

  3068. 

  3069. static int opt_sections(void *optctx, const char *opt, const char *arg)

  3070. {

  3071.     printf("Sections:\n"

  3072.            "W.. = Section is a wrapper (contains other sections, no local entries)\n"

  3073.            ".A. = Section contains an array of elements of the same type\n"

  3074.            "..V = Section may contain a variable number of fields with variable keys\n"

  3075.            "FLAGS NAME/UNIQUE_NAME\n"

  3076.            "---\n");

  3077.     print_section(SECTION_ID_ROOT, 0);

  3078.     return 0;

  3079. }

  3080. 

  3081. static int opt_show_versions(const char *opt, const char *arg)

  3082. {

  3083.     mark_section_show_entries(SECTION_ID_PROGRAM_VERSION, 1, NULL);

  3084.     mark_section_show_entries(SECTION_ID_LIBRARY_VERSION, 1, NULL);

  3085.     return 0;

  3086. }

  3087. 

  3088. #define DEFINE_OPT_SHOW_SECTION(section, target_section_id)             \

  3089.     static int opt_show_##section(const char *opt, const char *arg)     \

  3090.     {                                                                   \

  3091.         mark_section_show_entries(SECTION_ID_##target_section_id, 1, NULL); \

  3092.         return 0;                                                       \

  3093.     }

  3094. 

  3095. DEFINE_OPT_SHOW_SECTION(chapters,         CHAPTERS)

  3096. DEFINE_OPT_SHOW_SECTION(error,            ERROR)

  3097. DEFINE_OPT_SHOW_SECTION(format,           FORMAT)

  3098. DEFINE_OPT_SHOW_SECTION(frames,           FRAMES)

  3099. DEFINE_OPT_SHOW_SECTION(library_versions, LIBRARY_VERSIONS)

  3100. DEFINE_OPT_SHOW_SECTION(packets,          PACKETS)

  3101. DEFINE_OPT_SHOW_SECTION(pixel_formats,    PIXEL_FORMATS)

  3102. DEFINE_OPT_SHOW_SECTION(program_version,  PROGRAM_VERSION)

  3103. DEFINE_OPT_SHOW_SECTION(streams,          STREAMS)

  3104. DEFINE_OPT_SHOW_SECTION(programs,         PROGRAMS)

  3105. 

  3106. static const OptionDef real_options[] = {

  3107. #include "cmdutils_common_opts.h"

  3108.     { "f", HAS_ARG, {.func_arg = opt_format}, "force format", "format" },

  3109.     { "unit", OPT_BOOL, {&show_value_unit}, "show unit of the displayed values" },

  3110.     { "prefix", OPT_BOOL, {&use_value_prefix}, "use SI prefixes for the displayed values" },

  3111.     { "byte_binary_prefix", OPT_BOOL, {&use_byte_value_binary_prefix},

  3112.       "use binary prefixes for byte units" },

  3113.     { "sexagesimal", OPT_BOOL,  {&use_value_sexagesimal_format},

  3114.       "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },

  3115.     { "pretty", 0, {.func_arg = opt_pretty},

  3116.       "prettify the format of displayed values, make it more human readable" },

  3117.     { "print_format", OPT_STRING | HAS_ARG, {(void*)&print_format},

  3118.       "set the output printing format (available formats are: default, compact, csv, flat, ini, json, xml)", "format" },

  3119.     { "of", OPT_STRING | HAS_ARG, {(void*)&print_format}, "alias for -print_format", "format" },

  3120.     { "select_streams", OPT_STRING | HAS_ARG, {(void*)&stream_specifier}, "select the specified streams", "stream_specifier" },

  3121.     { "sections", OPT_EXIT, {.func_arg = opt_sections}, "print sections structure and section information, and exit" },

  3122.     { "show_data",    OPT_BOOL, {(void*)&do_show_data}, "show packets data" },

  3123.     { "show_data_hash", OPT_STRING | HAS_ARG, {(void*)&show_data_hash}, "show packets data hash" },

  3124.     { "show_error",   0, {(void*)&opt_show_error},  "show probing error" },

  3125.     { "show_format",  0, {(void*)&opt_show_format}, "show format/container info" },

  3126.     { "show_frames",  0, {(void*)&opt_show_frames}, "show frames info" },

  3127.     { "show_format_entry", HAS_ARG, {.func_arg = opt_show_format_entry},

  3128.       "show a particular entry from the format/container info", "entry" },

  3129.     { "show_entries", HAS_ARG, {.func_arg = opt_show_entries},

  3130.       "show a set of specified entries", "entry_list" },

  3131.     { "show_packets", 0, {(void*)&opt_show_packets}, "show packets info" },

  3132.     { "show_programs", 0, {(void*)&opt_show_programs}, "show programs info" },

  3133.     { "show_streams", 0, {(void*)&opt_show_streams}, "show streams info" },

  3134.     { "show_chapters", 0, {(void*)&opt_show_chapters}, "show chapters info" },

  3135.     { "count_frames", OPT_BOOL, {(void*)&do_count_frames}, "count the number of frames per stream" },

  3136.     { "count_packets", OPT_BOOL, {(void*)&do_count_packets}, "count the number of packets per stream" },

  3137.     { "show_program_version",  0, {(void*)&opt_show_program_version},  "show ffprobe version" },

  3138.     { "show_library_versions", 0, {(void*)&opt_show_library_versions}, "show library versions" },

  3139.     { "show_versions",         0, {(void*)&opt_show_versions}, "show program and library versions" },

  3140.     { "show_pixel_formats", 0, {(void*)&opt_show_pixel_formats}, "show pixel format descriptions" },

  3141.     { "show_private_data", OPT_BOOL, {(void*)&show_private_data}, "show private data" },

  3142.     { "private",           OPT_BOOL, {(void*)&show_private_data}, "same as show_private_data" },

  3143.     { "bitexact", OPT_BOOL, {&do_bitexact}, "force bitexact output" },

  3144.     { "read_intervals", HAS_ARG, {.func_arg = opt_read_intervals}, "set read intervals", "read_intervals" },

  3145.     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {.func_arg = opt_default}, "generic catch all option", "" },

  3146.     { "i", HAS_ARG, {.func_arg = opt_input_file_i}, "read specified file", "input_file"},

  3147.     { NULL, },

  3148. };

  3149. 

  3150. static inline int check_section_show_entries(int section_id)

  3151. {

  3152.     int *id;

  3153.     struct section *section = &sections[section_id];

  3154.     if (sections[section_id].show_all_entries || sections[section_id].entries_to_show)

  3155.         return 1;

  3156.     for (id = section->children_ids; *id != -1; id++)

  3157.         if (check_section_show_entries(*id))

  3158.             return 1;

  3159.     return 0;

  3160. }

  3161. 

  3162. #define SET_DO_SHOW(id, varname) do {                                   \

  3163.         if (check_section_show_entries(SECTION_ID_##id))                \

  3164.             do_show_##varname = 1;                                      \

  3165.     } while (0)

  3166. 

  3167. int main(int argc, char **argv)

  3168. {

  3169.     const Writer *w;

  3170.     WriterContext *wctx;

  3171.     char *buf;

  3172.     char *w_name = NULL, *w_args = NULL;

  3173.     int ret, i;

  3174. 

  3175.     av_log_set_flags(AV_LOG_SKIP_REPEATED);

  3176.     register_exit(ffprobe_cleanup);

  3177. 

  3178.     options = real_options;

  3179.     parse_loglevel(argc, argv, options);

  3180.     av_register_all();

  3181.     avformat_network_init();

  3182.     init_opts();

  3183. #if CONFIG_AVDEVICE

  3184.     avdevice_register_all();

  3185. #endif

  3186. 

  3187.     show_banner(argc, argv, options);

  3188.     parse_options(NULL, argc, argv, options, opt_input_file);

  3189. 

  3190.     /* mark things to show, based on -show_entries */

  3191.     SET_DO_SHOW(CHAPTERS, chapters);

  3192.     SET_DO_SHOW(ERROR, error);

  3193.     SET_DO_SHOW(FORMAT, format);

  3194.     SET_DO_SHOW(FRAMES, frames);

  3195.     SET_DO_SHOW(LIBRARY_VERSIONS, library_versions);

  3196.     SET_DO_SHOW(PACKETS, packets);

  3197.     SET_DO_SHOW(PIXEL_FORMATS, pixel_formats);

  3198.     SET_DO_SHOW(PIXEL_FORMAT_FLAGS, pixel_format_flags);

  3199.     SET_DO_SHOW(PIXEL_FORMAT_COMPONENTS, pixel_format_components);

  3200.     SET_DO_SHOW(PROGRAM_VERSION, program_version);

  3201.     SET_DO_SHOW(PROGRAMS, programs);

  3202.     SET_DO_SHOW(STREAMS, streams);

  3203.     SET_DO_SHOW(STREAM_DISPOSITION, stream_disposition);

  3204.     SET_DO_SHOW(PROGRAM_STREAM_DISPOSITION, stream_disposition);

  3205. 

  3206.     SET_DO_SHOW(CHAPTER_TAGS, chapter_tags);

  3207.     SET_DO_SHOW(FORMAT_TAGS, format_tags);

  3208.     SET_DO_SHOW(FRAME_TAGS, frame_tags);

  3209.     SET_DO_SHOW(PROGRAM_TAGS, program_tags);

  3210.     SET_DO_SHOW(STREAM_TAGS, stream_tags);

  3211.     SET_DO_SHOW(PACKET_TAGS, packet_tags);

  3212. 

  3213.     if (do_bitexact && (do_show_program_version || do_show_library_versions)) {

  3214.         av_log(NULL, AV_LOG_ERROR,

  3215.                "-bitexact and -show_program_version or -show_library_versions "

  3216.                "options are incompatible\n");

  3217.         ret = AVERROR(EINVAL);

  3218.         goto end;

  3219.     }

  3220. 

  3221.     writer_register_all();

  3222. 

  3223.     if (!print_format)

  3224.         print_format = av_strdup("default");

  3225.     if (!print_format) {

  3226.         ret = AVERROR(ENOMEM);

  3227.         goto end;

  3228.     }

  3229.     w_name = av_strtok(print_format, "=", &buf);

  3230.     w_args = buf;

  3231. 

  3232.     if (show_data_hash) {

  3233.         if ((ret = av_hash_alloc(&hash, show_data_hash)) < 0) {

  3234.             if (ret == AVERROR(EINVAL)) {

  3235.                 const char *n;

  3236.                 av_log(NULL, AV_LOG_ERROR,

  3237.                        "Unknown hash algorithm '%s'\nKnown algorithms:",

  3238.                        show_data_hash);

  3239.                 for (i = 0; (n = av_hash_names(i)); i++)

  3240.                     av_log(NULL, AV_LOG_ERROR, " %s", n);

  3241.                 av_log(NULL, AV_LOG_ERROR, "\n");

  3242.             }

  3243.             goto end;

  3244.         }

  3245.     }

  3246. 

  3247.     w = writer_get_by_name(w_name);

  3248.     if (!w) {

  3249.         av_log(NULL, AV_LOG_ERROR, "Unknown output format with name '%s'\n", w_name);

  3250.         ret = AVERROR(EINVAL);

  3251.         goto end;

  3252.     }

  3253. 

  3254.     if ((ret = writer_open(&wctx, w, w_args,

  3255.                            sections, FF_ARRAY_ELEMS(sections))) >= 0) {

  3256.         if (w == &xml_writer)

  3257.             wctx->string_validation_utf8_flags |= AV_UTF8_FLAG_EXCLUDE_XML_INVALID_CONTROL_CODES;

  3258. 

  3259.         writer_print_section_header(wctx, SECTION_ID_ROOT);

  3260. 

  3261.         if (do_show_program_version)

  3262.             ffprobe_show_program_version(wctx);

  3263.         if (do_show_library_versions)

  3264.             ffprobe_show_library_versions(wctx);

  3265.         if (do_show_pixel_formats)

  3266.             ffprobe_show_pixel_formats(wctx);

  3267. 

  3268.         if (!input_filename &&

  3269.             ((do_show_format || do_show_programs || do_show_streams || do_show_chapters || do_show_packets || do_show_error) ||

  3270.              (!do_show_program_version && !do_show_library_versions && !do_show_pixel_formats))) {

  3271.             show_usage();

  3272.             av_log(NULL, AV_LOG_ERROR, "You have to specify one input file.\n");

  3273.             av_log(NULL, AV_LOG_ERROR, "Use -h to get full help or, even better, run 'man %s'.\n", program_name);

  3274.             ret = AVERROR(EINVAL);

  3275.         } else if (input_filename) {

  3276.             ret = probe_file(wctx, input_filename);

  3277.             if (ret < 0 && do_show_error)

  3278.                 show_error(wctx, ret);

  3279.         }

  3280. 

  3281.         writer_print_section_footer(wctx);

  3282.         writer_close(&wctx);

  3283.     }

  3284. 

  3285. end:

  3286.     av_freep(&print_format);

  3287.     av_freep(&read_intervals);

  3288.     av_hash_freep(&hash);

  3289. 

  3290.     uninit_opts();

  3291.     for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)

  3292.         av_dict_free(&(sections[i].entries_to_show));

  3293. 

  3294.     avformat_network_deinit();

  3295. 

  3296.     return ret < 0;

  3297. }