git.sesse.net Git - ffmpeg/blob - ffprobe.c

   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/mastering_display_metadata.h"
  39 #include "libavutil/opt.h"
  40 #include "libavutil/pixdesc.h"
  41 #include "libavutil/spherical.h"
  42 #include "libavutil/stereo3d.h"
  43 #include "libavutil/dict.h"
  44 #include "libavutil/intreadwrite.h"
  45 #include "libavutil/libm.h"
  46 #include "libavutil/parseutils.h"
  47 #include "libavutil/timecode.h"
  48 #include "libavutil/timestamp.h"
  49 #include "libavdevice/avdevice.h"
  50 #include "libswscale/swscale.h"
  51 #include "libswresample/swresample.h"
  52 #include "libpostproc/postprocess.h"
  53 #include "cmdutils.h"
  54
  55 #include "libavutil/thread.h"
  56
  57 #if !HAVE_THREADS
  58 #  ifdef pthread_mutex_lock
  59 #    undef pthread_mutex_lock
  60 #  endif
  61 #  define pthread_mutex_lock(a) do{}while(0)
  62 #  ifdef pthread_mutex_unlock
  63 #    undef pthread_mutex_unlock
  64 #  endif
  65 #  define pthread_mutex_unlock(a) do{}while(0)
  66 #endif
  67
  68 typedef struct InputStream {
  69     AVStream *st;
  70
  71     AVCodecContext *dec_ctx;
  72 } InputStream;
  73
  74 typedef struct InputFile {
  75     AVFormatContext *fmt_ctx;
  76
  77     InputStream *streams;
  78     int       nb_streams;
  79 } InputFile;
  80
  81 const char program_name[] = "ffprobe";
  82 const int program_birth_year = 2007;
  83
  84 static int do_bitexact = 0;
  85 static int do_count_frames = 0;
  86 static int do_count_packets = 0;
  87 static int do_read_frames  = 0;
  88 static int do_read_packets = 0;
  89 static int do_show_chapters = 0;
  90 static int do_show_error   = 0;
  91 static int do_show_format  = 0;
  92 static int do_show_frames  = 0;
  93 static int do_show_packets = 0;
  94 static int do_show_programs = 0;
  95 static int do_show_streams = 0;
  96 static int do_show_stream_disposition = 0;
  97 static int do_show_data    = 0;
  98 static int do_show_program_version  = 0;
  99 static int do_show_library_versions = 0;
 100 static int do_show_pixel_formats = 0;
 101 static int do_show_pixel_format_flags = 0;
 102 static int do_show_pixel_format_components = 0;
 103 static int do_show_log = 0;
 104
 105 static int do_show_chapter_tags = 0;
 106 static int do_show_format_tags = 0;
 107 static int do_show_frame_tags = 0;
 108 static int do_show_program_tags = 0;
 109 static int do_show_stream_tags = 0;
 110 static int do_show_packet_tags = 0;
 111
 112 static int show_value_unit              = 0;
 113 static int use_value_prefix             = 0;
 114 static int use_byte_value_binary_prefix = 0;
 115 static int use_value_sexagesimal_format = 0;
 116 static int show_private_data            = 1;
 117
 118 static char *print_format;
 119 static char *stream_specifier;
 120 static char *show_data_hash;
 121
 122 typedef struct ReadInterval {
 123     int id;             ///< identifier
 124     int64_t start, end; ///< start, end in second/AV_TIME_BASE units
 125     int has_start, has_end;
 126     int start_is_offset, end_is_offset;
 127     int duration_frames;
 128 } ReadInterval;
 129
 130 static ReadInterval *read_intervals;
 131 static int read_intervals_nb = 0;
 132
 133 static int find_stream_info  = 1;
 134
 135 /* section structure definition */
 136
 137 #define SECTION_MAX_NB_CHILDREN 10
 138
 139 struct section {
 140     int id;             ///< unique id identifying a section
 141     const char *name;
 142
 143 #define SECTION_FLAG_IS_WRAPPER      1 ///< the section only contains other sections, but has no data at its own level
 144 #define SECTION_FLAG_IS_ARRAY        2 ///< the section contains an array of elements of the same type
 145 #define SECTION_FLAG_HAS_VARIABLE_FIELDS 4 ///< the section may contain a variable number of fields with variable keys.
 146                                            ///  For these sections the element_name field is mandatory.
 147     int flags;
 148     int children_ids[SECTION_MAX_NB_CHILDREN+1]; ///< list of children section IDS, terminated by -1
 149     const char *element_name; ///< name of the contained element, if provided
 150     const char *unique_name;  ///< unique section name, in case the name is ambiguous
 151     AVDictionary *entries_to_show;
 152     int show_all_entries;
 153 };
 154
 155 typedef enum {
 156     SECTION_ID_NONE = -1,
 157     SECTION_ID_CHAPTER,
 158     SECTION_ID_CHAPTER_TAGS,
 159     SECTION_ID_CHAPTERS,
 160     SECTION_ID_ERROR,
 161     SECTION_ID_FORMAT,
 162     SECTION_ID_FORMAT_TAGS,
 163     SECTION_ID_FRAME,
 164     SECTION_ID_FRAMES,
 165     SECTION_ID_FRAME_TAGS,
 166     SECTION_ID_FRAME_SIDE_DATA_LIST,
 167     SECTION_ID_FRAME_SIDE_DATA,
 168     SECTION_ID_FRAME_LOG,
 169     SECTION_ID_FRAME_LOGS,
 170     SECTION_ID_LIBRARY_VERSION,
 171     SECTION_ID_LIBRARY_VERSIONS,
 172     SECTION_ID_PACKET,
 173     SECTION_ID_PACKET_TAGS,
 174     SECTION_ID_PACKETS,
 175     SECTION_ID_PACKETS_AND_FRAMES,
 176     SECTION_ID_PACKET_SIDE_DATA_LIST,
 177     SECTION_ID_PACKET_SIDE_DATA,
 178     SECTION_ID_PIXEL_FORMAT,
 179     SECTION_ID_PIXEL_FORMAT_FLAGS,
 180     SECTION_ID_PIXEL_FORMAT_COMPONENT,
 181     SECTION_ID_PIXEL_FORMAT_COMPONENTS,
 182     SECTION_ID_PIXEL_FORMATS,
 183     SECTION_ID_PROGRAM_STREAM_DISPOSITION,
 184     SECTION_ID_PROGRAM_STREAM_TAGS,
 185     SECTION_ID_PROGRAM,
 186     SECTION_ID_PROGRAM_STREAMS,
 187     SECTION_ID_PROGRAM_STREAM,
 188     SECTION_ID_PROGRAM_TAGS,
 189     SECTION_ID_PROGRAM_VERSION,
 190     SECTION_ID_PROGRAMS,
 191     SECTION_ID_ROOT,
 192     SECTION_ID_STREAM,
 193     SECTION_ID_STREAM_DISPOSITION,
 194     SECTION_ID_STREAMS,
 195     SECTION_ID_STREAM_TAGS,
 196     SECTION_ID_STREAM_SIDE_DATA_LIST,
 197     SECTION_ID_STREAM_SIDE_DATA,
 198     SECTION_ID_SUBTITLE,
 199 } SectionID;
 200
 201 static struct section sections[] = {
 202     [SECTION_ID_CHAPTERS] =           { SECTION_ID_CHAPTERS, "chapters", SECTION_FLAG_IS_ARRAY, { SECTION_ID_CHAPTER, -1 } },
 203     [SECTION_ID_CHAPTER] =            { SECTION_ID_CHAPTER, "chapter", 0, { SECTION_ID_CHAPTER_TAGS, -1 } },
 204     [SECTION_ID_CHAPTER_TAGS] =       { SECTION_ID_CHAPTER_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "chapter_tags" },
 205     [SECTION_ID_ERROR] =              { SECTION_ID_ERROR, "error", 0, { -1 } },
 206     [SECTION_ID_FORMAT] =             { SECTION_ID_FORMAT, "format", 0, { SECTION_ID_FORMAT_TAGS, -1 } },
 207     [SECTION_ID_FORMAT_TAGS] =        { SECTION_ID_FORMAT_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "format_tags" },
 208     [SECTION_ID_FRAMES] =             { SECTION_ID_FRAMES, "frames", SECTION_FLAG_IS_ARRAY, { SECTION_ID_FRAME, SECTION_ID_SUBTITLE, -1 } },
 209     [SECTION_ID_FRAME] =              { SECTION_ID_FRAME, "frame", 0, { SECTION_ID_FRAME_TAGS, SECTION_ID_FRAME_SIDE_DATA_LIST, SECTION_ID_FRAME_LOGS, -1 } },
 210     [SECTION_ID_FRAME_TAGS] =         { SECTION_ID_FRAME_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "frame_tags" },
 211     [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 }, .element_name = "side_data", .unique_name = "frame_side_data_list" },
 212     [SECTION_ID_FRAME_SIDE_DATA] =     { SECTION_ID_FRAME_SIDE_DATA, "side_data", 0, { -1 } },
 213     [SECTION_ID_FRAME_LOGS] =         { SECTION_ID_FRAME_LOGS, "logs", SECTION_FLAG_IS_ARRAY, { SECTION_ID_FRAME_LOG, -1 } },
 214     [SECTION_ID_FRAME_LOG] =          { SECTION_ID_FRAME_LOG, "log", 0, { -1 },  },
 215     [SECTION_ID_LIBRARY_VERSIONS] =   { SECTION_ID_LIBRARY_VERSIONS, "library_versions", SECTION_FLAG_IS_ARRAY, { SECTION_ID_LIBRARY_VERSION, -1 } },
 216     [SECTION_ID_LIBRARY_VERSION] =    { SECTION_ID_LIBRARY_VERSION, "library_version", 0, { -1 } },
 217     [SECTION_ID_PACKETS] =            { SECTION_ID_PACKETS, "packets", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PACKET, -1} },
 218     [SECTION_ID_PACKETS_AND_FRAMES] = { SECTION_ID_PACKETS_AND_FRAMES, "packets_and_frames", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PACKET, -1} },
 219     [SECTION_ID_PACKET] =             { SECTION_ID_PACKET, "packet", 0, { SECTION_ID_PACKET_TAGS, SECTION_ID_PACKET_SIDE_DATA_LIST, -1 } },
 220     [SECTION_ID_PACKET_TAGS] =        { SECTION_ID_PACKET_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "packet_tags" },
 221     [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 }, .element_name = "side_data", .unique_name = "packet_side_data_list" },
 222     [SECTION_ID_PACKET_SIDE_DATA] =     { SECTION_ID_PACKET_SIDE_DATA, "side_data", 0, { -1 } },
 223     [SECTION_ID_PIXEL_FORMATS] =      { SECTION_ID_PIXEL_FORMATS, "pixel_formats", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PIXEL_FORMAT, -1 } },
 224     [SECTION_ID_PIXEL_FORMAT] =       { SECTION_ID_PIXEL_FORMAT, "pixel_format", 0, { SECTION_ID_PIXEL_FORMAT_FLAGS, SECTION_ID_PIXEL_FORMAT_COMPONENTS, -1 } },
 225     [SECTION_ID_PIXEL_FORMAT_FLAGS] = { SECTION_ID_PIXEL_FORMAT_FLAGS, "flags", 0, { -1 }, .unique_name = "pixel_format_flags" },
 226     [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" },
 227     [SECTION_ID_PIXEL_FORMAT_COMPONENT]  = { SECTION_ID_PIXEL_FORMAT_COMPONENT, "component", 0, { -1 } },
 228     [SECTION_ID_PROGRAM_STREAM_DISPOSITION] = { SECTION_ID_PROGRAM_STREAM_DISPOSITION, "disposition", 0, { -1 }, .unique_name = "program_stream_disposition" },
 229     [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" },
 230     [SECTION_ID_PROGRAM] =                    { SECTION_ID_PROGRAM, "program", 0, { SECTION_ID_PROGRAM_TAGS, SECTION_ID_PROGRAM_STREAMS, -1 } },
 231     [SECTION_ID_PROGRAM_STREAMS] =            { SECTION_ID_PROGRAM_STREAMS, "streams", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PROGRAM_STREAM, -1 }, .unique_name = "program_streams" },
 232     [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" },
 233     [SECTION_ID_PROGRAM_TAGS] =               { SECTION_ID_PROGRAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "program_tags" },
 234     [SECTION_ID_PROGRAM_VERSION] =    { SECTION_ID_PROGRAM_VERSION, "program_version", 0, { -1 } },
 235     [SECTION_ID_PROGRAMS] =                   { SECTION_ID_PROGRAMS, "programs", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PROGRAM, -1 } },
 236     [SECTION_ID_ROOT] =               { SECTION_ID_ROOT, "root", SECTION_FLAG_IS_WRAPPER,
 237                                         { SECTION_ID_CHAPTERS, SECTION_ID_FORMAT, SECTION_ID_FRAMES, SECTION_ID_PROGRAMS, SECTION_ID_STREAMS,
 238                                           SECTION_ID_PACKETS, SECTION_ID_ERROR, SECTION_ID_PROGRAM_VERSION, SECTION_ID_LIBRARY_VERSIONS,
 239                                           SECTION_ID_PIXEL_FORMATS, -1} },
 240     [SECTION_ID_STREAMS] =            { SECTION_ID_STREAMS, "streams", SECTION_FLAG_IS_ARRAY, { SECTION_ID_STREAM, -1 } },
 241     [SECTION_ID_STREAM] =             { SECTION_ID_STREAM, "stream", 0, { SECTION_ID_STREAM_DISPOSITION, SECTION_ID_STREAM_TAGS, SECTION_ID_STREAM_SIDE_DATA_LIST, -1 } },
 242     [SECTION_ID_STREAM_DISPOSITION] = { SECTION_ID_STREAM_DISPOSITION, "disposition", 0, { -1 }, .unique_name = "stream_disposition" },
 243     [SECTION_ID_STREAM_TAGS] =        { SECTION_ID_STREAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "stream_tags" },
 244     [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 }, .element_name = "side_data", .unique_name = "stream_side_data_list" },
 245     [SECTION_ID_STREAM_SIDE_DATA] =     { SECTION_ID_STREAM_SIDE_DATA, "side_data", 0, { -1 } },
 246     [SECTION_ID_SUBTITLE] =           { SECTION_ID_SUBTITLE, "subtitle", 0, { -1 } },
 247 };
 248
 249 static const OptionDef *options;
 250
 251 /* FFprobe context */
 252 static const char *input_filename;
 253 static AVInputFormat *iformat = NULL;
 254
 255 static struct AVHashContext *hash;
 256
 257 static const struct {
 258     double bin_val;
 259     double dec_val;
 260     const char *bin_str;
 261     const char *dec_str;
 262 } si_prefixes[] = {
 263     { 1.0, 1.0, "", "" },
 264     { 1.024e3, 1e3, "Ki", "K" },
 265     { 1.048576e6, 1e6, "Mi", "M" },
 266     { 1.073741824e9, 1e9, "Gi", "G" },
 267     { 1.099511627776e12, 1e12, "Ti", "T" },
 268     { 1.125899906842624e15, 1e15, "Pi", "P" },
 269 };
 270
 271 static const char unit_second_str[]         = "s"    ;
 272 static const char unit_hertz_str[]          = "Hz"   ;
 273 static const char unit_byte_str[]           = "byte" ;
 274 static const char unit_bit_per_second_str[] = "bit/s";
 275
 276 static int nb_streams;
 277 static uint64_t *nb_streams_packets;
 278 static uint64_t *nb_streams_frames;
 279 static int *selected_streams;
 280
 281 #if HAVE_THREADS
 282 pthread_mutex_t log_mutex;
 283 #endif
 284 typedef struct LogBuffer {
 285     char *context_name;
 286     int log_level;
 287     char *log_message;
 288     AVClassCategory category;
 289     char *parent_name;
 290     AVClassCategory parent_category;
 291 }LogBuffer;
 292
 293 static LogBuffer *log_buffer;
 294 static int log_buffer_size;
 295
 296 static void log_callback(void *ptr, int level, const char *fmt, va_list vl)
 297 {
 298     AVClass* avc = ptr ? *(AVClass **) ptr : NULL;
 299     va_list vl2;
 300     char line[1024];
 301     static int print_prefix = 1;
 302     void *new_log_buffer;
 303
 304     va_copy(vl2, vl);
 305     av_log_default_callback(ptr, level, fmt, vl);
 306     av_log_format_line(ptr, level, fmt, vl2, line, sizeof(line), &print_prefix);
 307     va_end(vl2);
 308
 309 #if HAVE_THREADS
 310     pthread_mutex_lock(&log_mutex);
 311
 312     new_log_buffer = av_realloc_array(log_buffer, log_buffer_size + 1, sizeof(*log_buffer));
 313     if (new_log_buffer) {
 314         char *msg;
 315         int i;
 316
 317         log_buffer = new_log_buffer;
 318         memset(&log_buffer[log_buffer_size], 0, sizeof(log_buffer[log_buffer_size]));
 319         log_buffer[log_buffer_size].context_name= avc ? av_strdup(avc->item_name(ptr)) : NULL;
 320         if (avc) {
 321             if (avc->get_category) log_buffer[log_buffer_size].category = avc->get_category(ptr);
 322             else                   log_buffer[log_buffer_size].category = avc->category;
 323         }
 324         log_buffer[log_buffer_size].log_level   = level;
 325         msg = log_buffer[log_buffer_size].log_message = av_strdup(line);
 326         for (i=strlen(msg) - 1; i>=0 && msg[i] == '\n'; i--) {
 327             msg[i] = 0;
 328         }
 329         if (avc && avc->parent_log_context_offset) {
 330             AVClass** parent = *(AVClass ***) (((uint8_t *) ptr) +
 331                                    avc->parent_log_context_offset);
 332             if (parent && *parent) {
 333                 log_buffer[log_buffer_size].parent_name = av_strdup((*parent)->item_name(parent));
 334                 log_buffer[log_buffer_size].parent_category =
 335                     (*parent)->get_category ? (*parent)->get_category(parent) :(*parent)->category;
 336             }
 337         }
 338         log_buffer_size ++;
 339     }
 340
 341     pthread_mutex_unlock(&log_mutex);
 342 #endif
 343 }
 344
 345 static void ffprobe_cleanup(int ret)
 346 {
 347     int i;
 348     for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)
 349         av_dict_free(&(sections[i].entries_to_show));
 350
 351 #if HAVE_THREADS
 352     pthread_mutex_destroy(&log_mutex);
 353 #endif
 354 }
 355
 356 struct unit_value {
 357     union { double d; long long int i; } val;
 358     const char *unit;
 359 };
 360
 361 static char *value_string(char *buf, int buf_size, struct unit_value uv)
 362 {
 363     double vald;
 364     long long int vali;
 365     int show_float = 0;
 366
 367     if (uv.unit == unit_second_str) {
 368         vald = uv.val.d;
 369         show_float = 1;
 370     } else {
 371         vald = vali = uv.val.i;
 372     }
 373
 374     if (uv.unit == unit_second_str && use_value_sexagesimal_format) {
 375         double secs;
 376         int hours, mins;
 377         secs  = vald;
 378         mins  = (int)secs / 60;
 379         secs  = secs - mins * 60;
 380         hours = mins / 60;
 381         mins %= 60;
 382         snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
 383     } else {
 384         const char *prefix_string = "";
 385
 386         if (use_value_prefix && vald > 1) {
 387             long long int index;
 388
 389             if (uv.unit == unit_byte_str && use_byte_value_binary_prefix) {
 390                 index = (long long int) (log2(vald)) / 10;
 391                 index = av_clip(index, 0, FF_ARRAY_ELEMS(si_prefixes) - 1);
 392                 vald /= si_prefixes[index].bin_val;
 393                 prefix_string = si_prefixes[index].bin_str;
 394             } else {
 395                 index = (long long int) (log10(vald)) / 3;
 396                 index = av_clip(index, 0, FF_ARRAY_ELEMS(si_prefixes) - 1);
 397                 vald /= si_prefixes[index].dec_val;
 398                 prefix_string = si_prefixes[index].dec_str;
 399             }
 400             vali = vald;
 401         }
 402
 403         if (show_float || (use_value_prefix && vald != (long long int)vald))
 404             snprintf(buf, buf_size, "%f", vald);
 405         else
 406             snprintf(buf, buf_size, "%lld", vali);
 407         av_strlcatf(buf, buf_size, "%s%s%s", *prefix_string || show_value_unit ? " " : "",
 408                  prefix_string, show_value_unit ? uv.unit : "");
 409     }
 410
 411     return buf;
 412 }
 413
 414 /* WRITERS API */
 415
 416 typedef struct WriterContext WriterContext;
 417
 418 #define WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS 1
 419 #define WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER 2
 420
 421 typedef enum {
 422     WRITER_STRING_VALIDATION_FAIL,
 423     WRITER_STRING_VALIDATION_REPLACE,
 424     WRITER_STRING_VALIDATION_IGNORE,
 425     WRITER_STRING_VALIDATION_NB
 426 } StringValidation;
 427
 428 typedef struct Writer {
 429     const AVClass *priv_class;      ///< private class of the writer, if any
 430     int priv_size;                  ///< private size for the writer context
 431     const char *name;
 432
 433     int  (*init)  (WriterContext *wctx);
 434     void (*uninit)(WriterContext *wctx);
 435
 436     void (*print_section_header)(WriterContext *wctx);
 437     void (*print_section_footer)(WriterContext *wctx);
 438     void (*print_integer)       (WriterContext *wctx, const char *, long long int);
 439     void (*print_rational)      (WriterContext *wctx, AVRational *q, char *sep);
 440     void (*print_string)        (WriterContext *wctx, const char *, const char *);
 441     int flags;                  ///< a combination or WRITER_FLAG_*
 442 } Writer;
 443
 444 #define SECTION_MAX_NB_LEVELS 10
 445
 446 struct WriterContext {
 447     const AVClass *class;           ///< class of the writer
 448     const Writer *writer;           ///< the Writer of which this is an instance
 449     char *name;                     ///< name of this writer instance
 450     void *priv;                     ///< private data for use by the filter
 451
 452     const struct section *sections; ///< array containing all sections
 453     int nb_sections;                ///< number of sections
 454
 455     int level;                      ///< current level, starting from 0
 456
 457     /** number of the item printed in the given section, starting from 0 */
 458     unsigned int nb_item[SECTION_MAX_NB_LEVELS];
 459
 460     /** section per each level */
 461     const struct section *section[SECTION_MAX_NB_LEVELS];
 462     AVBPrint section_pbuf[SECTION_MAX_NB_LEVELS]; ///< generic print buffer dedicated to each section,
 463                                                   ///  used by various writers
 464
 465     unsigned int nb_section_packet; ///< number of the packet section in case we are in "packets_and_frames" section
 466     unsigned int nb_section_frame;  ///< number of the frame  section in case we are in "packets_and_frames" section
 467     unsigned int nb_section_packet_frame; ///< nb_section_packet or nb_section_frame according if is_packets_and_frames
 468
 469     int string_validation;
 470     char *string_validation_replacement;
 471     unsigned int string_validation_utf8_flags;
 472 };
 473
 474 static const char *writer_get_name(void *p)
 475 {
 476     WriterContext *wctx = p;
 477     return wctx->writer->name;
 478 }
 479
 480 #define OFFSET(x) offsetof(WriterContext, x)
 481
 482 static const AVOption writer_options[] = {
 483     { "string_validation", "set string validation mode",
 484       OFFSET(string_validation), AV_OPT_TYPE_INT, {.i64=WRITER_STRING_VALIDATION_REPLACE}, 0, WRITER_STRING_VALIDATION_NB-1, .unit = "sv" },
 485     { "sv", "set string validation mode",
 486       OFFSET(string_validation), AV_OPT_TYPE_INT, {.i64=WRITER_STRING_VALIDATION_REPLACE}, 0, WRITER_STRING_VALIDATION_NB-1, .unit = "sv" },
 487     { "ignore",  NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_IGNORE},  .unit = "sv" },
 488     { "replace", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_REPLACE}, .unit = "sv" },
 489     { "fail",    NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_FAIL},    .unit = "sv" },
 490     { "string_validation_replacement", "set string validation replacement string", OFFSET(string_validation_replacement), AV_OPT_TYPE_STRING, {.str=""}},
 491     { "svr", "set string validation replacement string", OFFSET(string_validation_replacement), AV_OPT_TYPE_STRING, {.str="\xEF\xBF\xBD"}},
 492     { NULL }
 493 };
 494
 495 static void *writer_child_next(void *obj, void *prev)
 496 {
 497     WriterContext *ctx = obj;
 498     if (!prev && ctx->writer && ctx->writer->priv_class && ctx->priv)
 499         return ctx->priv;
 500     return NULL;
 501 }
 502
 503 static const AVClass writer_class = {
 504     .class_name = "Writer",
 505     .item_name  = writer_get_name,
 506     .option     = writer_options,
 507     .version    = LIBAVUTIL_VERSION_INT,
 508     .child_next = writer_child_next,
 509 };
 510
 511 static void writer_close(WriterContext **wctx)
 512 {
 513     int i;
 514
 515     if (!*wctx)
 516         return;
 517
 518     if ((*wctx)->writer->uninit)
 519         (*wctx)->writer->uninit(*wctx);
 520     for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
 521         av_bprint_finalize(&(*wctx)->section_pbuf[i], NULL);
 522     if ((*wctx)->writer->priv_class)
 523         av_opt_free((*wctx)->priv);
 524     av_freep(&((*wctx)->priv));
 525     av_opt_free(*wctx);
 526     av_freep(wctx);
 527 }
 528
 529 static void bprint_bytes(AVBPrint *bp, const uint8_t *ubuf, size_t ubuf_size)
 530 {
 531     int i;
 532     av_bprintf(bp, "0X");
 533     for (i = 0; i < ubuf_size; i++)
 534         av_bprintf(bp, "%02X", ubuf[i]);
 535 }
 536
 537
 538 static int writer_open(WriterContext **wctx, const Writer *writer, const char *args,
 539                        const struct section *sections, int nb_sections)
 540 {
 541     int i, ret = 0;
 542
 543     if (!(*wctx = av_mallocz(sizeof(WriterContext)))) {
 544         ret = AVERROR(ENOMEM);
 545         goto fail;
 546     }
 547
 548     if (!((*wctx)->priv = av_mallocz(writer->priv_size))) {
 549         ret = AVERROR(ENOMEM);
 550         goto fail;
 551     }
 552
 553     (*wctx)->class = &writer_class;
 554     (*wctx)->writer = writer;
 555     (*wctx)->level = -1;
 556     (*wctx)->sections = sections;
 557     (*wctx)->nb_sections = nb_sections;
 558
 559     av_opt_set_defaults(*wctx);
 560
 561     if (writer->priv_class) {
 562         void *priv_ctx = (*wctx)->priv;
 563         *((const AVClass **)priv_ctx) = writer->priv_class;
 564         av_opt_set_defaults(priv_ctx);
 565     }
 566
 567     /* convert options to dictionary */
 568     if (args) {
 569         AVDictionary *opts = NULL;
 570         AVDictionaryEntry *opt = NULL;
 571
 572         if ((ret = av_dict_parse_string(&opts, args, "=", ":", 0)) < 0) {
 573             av_log(*wctx, AV_LOG_ERROR, "Failed to parse option string '%s' provided to writer context\n", args);
 574             av_dict_free(&opts);
 575             goto fail;
 576         }
 577
 578         while ((opt = av_dict_get(opts, "", opt, AV_DICT_IGNORE_SUFFIX))) {
 579             if ((ret = av_opt_set(*wctx, opt->key, opt->value, AV_OPT_SEARCH_CHILDREN)) < 0) {
 580                 av_log(*wctx, AV_LOG_ERROR, "Failed to set option '%s' with value '%s' provided to writer context\n",
 581                        opt->key, opt->value);
 582                 av_dict_free(&opts);
 583                 goto fail;
 584             }
 585         }
 586
 587         av_dict_free(&opts);
 588     }
 589
 590     /* validate replace string */
 591     {
 592         const uint8_t *p = (*wctx)->string_validation_replacement;
 593         const uint8_t *endp = p + strlen(p);
 594         while (*p) {
 595             const uint8_t *p0 = p;
 596             int32_t code;
 597             ret = av_utf8_decode(&code, &p, endp, (*wctx)->string_validation_utf8_flags);
 598             if (ret < 0) {
 599                 AVBPrint bp;
 600                 av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC);
 601                 bprint_bytes(&bp, p0, p-p0),
 602                     av_log(wctx, AV_LOG_ERROR,
 603                            "Invalid UTF8 sequence %s found in string validation replace '%s'\n",
 604                            bp.str, (*wctx)->string_validation_replacement);
 605                 return ret;
 606             }
 607         }
 608     }
 609
 610     for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
 611         av_bprint_init(&(*wctx)->section_pbuf[i], 1, AV_BPRINT_SIZE_UNLIMITED);
 612
 613     if ((*wctx)->writer->init)
 614         ret = (*wctx)->writer->init(*wctx);
 615     if (ret < 0)
 616         goto fail;
 617
 618     return 0;
 619
 620 fail:
 621     writer_close(wctx);
 622     return ret;
 623 }
 624
 625 static inline void writer_print_section_header(WriterContext *wctx,
 626                                                int section_id)
 627 {
 628     int parent_section_id;
 629     wctx->level++;
 630     av_assert0(wctx->level < SECTION_MAX_NB_LEVELS);
 631     parent_section_id = wctx->level ?
 632         (wctx->section[wctx->level-1])->id : SECTION_ID_NONE;
 633
 634     wctx->nb_item[wctx->level] = 0;
 635     wctx->section[wctx->level] = &wctx->sections[section_id];
 636
 637     if (section_id == SECTION_ID_PACKETS_AND_FRAMES) {
 638         wctx->nb_section_packet = wctx->nb_section_frame =
 639         wctx->nb_section_packet_frame = 0;
 640     } else if (parent_section_id == SECTION_ID_PACKETS_AND_FRAMES) {
 641         wctx->nb_section_packet_frame = section_id == SECTION_ID_PACKET ?
 642             wctx->nb_section_packet : wctx->nb_section_frame;
 643     }
 644
 645     if (wctx->writer->print_section_header)
 646         wctx->writer->print_section_header(wctx);
 647 }
 648
 649 static inline void writer_print_section_footer(WriterContext *wctx)
 650 {
 651     int section_id = wctx->section[wctx->level]->id;
 652     int parent_section_id = wctx->level ?
 653         wctx->section[wctx->level-1]->id : SECTION_ID_NONE;
 654
 655     if (parent_section_id != SECTION_ID_NONE)
 656         wctx->nb_item[wctx->level-1]++;
 657     if (parent_section_id == SECTION_ID_PACKETS_AND_FRAMES) {
 658         if (section_id == SECTION_ID_PACKET) wctx->nb_section_packet++;
 659         else                                     wctx->nb_section_frame++;
 660     }
 661     if (wctx->writer->print_section_footer)
 662         wctx->writer->print_section_footer(wctx);
 663     wctx->level--;
 664 }
 665
 666 static inline void writer_print_integer(WriterContext *wctx,
 667                                         const char *key, long long int val)
 668 {
 669     const struct section *section = wctx->section[wctx->level];
 670
 671     if (section->show_all_entries || av_dict_get(section->entries_to_show, key, NULL, 0)) {
 672         wctx->writer->print_integer(wctx, key, val);
 673         wctx->nb_item[wctx->level]++;
 674     }
 675 }
 676
 677 static inline int validate_string(WriterContext *wctx, char **dstp, const char *src)
 678 {
 679     const uint8_t *p, *endp;
 680     AVBPrint dstbuf;
 681     int invalid_chars_nb = 0, ret = 0;
 682
 683     av_bprint_init(&dstbuf, 0, AV_BPRINT_SIZE_UNLIMITED);
 684
 685     endp = src + strlen(src);
 686     for (p = (uint8_t *)src; *p;) {
 687         uint32_t code;
 688         int invalid = 0;
 689         const uint8_t *p0 = p;
 690
 691         if (av_utf8_decode(&code, &p, endp, wctx->string_validation_utf8_flags) < 0) {
 692             AVBPrint bp;
 693             av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC);
 694             bprint_bytes(&bp, p0, p-p0);
 695             av_log(wctx, AV_LOG_DEBUG,
 696                    "Invalid UTF-8 sequence %s found in string '%s'\n", bp.str, src);
 697             invalid = 1;
 698         }
 699
 700         if (invalid) {
 701             invalid_chars_nb++;
 702
 703             switch (wctx->string_validation) {
 704             case WRITER_STRING_VALIDATION_FAIL:
 705                 av_log(wctx, AV_LOG_ERROR,
 706                        "Invalid UTF-8 sequence found in string '%s'\n", src);
 707                 ret = AVERROR_INVALIDDATA;
 708                 goto end;
 709                 break;
 710
 711             case WRITER_STRING_VALIDATION_REPLACE:
 712                 av_bprintf(&dstbuf, "%s", wctx->string_validation_replacement);
 713                 break;
 714             }
 715         }
 716
 717         if (!invalid || wctx->string_validation == WRITER_STRING_VALIDATION_IGNORE)
 718             av_bprint_append_data(&dstbuf, p0, p-p0);
 719     }
 720
 721     if (invalid_chars_nb && wctx->string_validation == WRITER_STRING_VALIDATION_REPLACE) {
 722         av_log(wctx, AV_LOG_WARNING,
 723                "%d invalid UTF-8 sequence(s) found in string '%s', replaced with '%s'\n",
 724                invalid_chars_nb, src, wctx->string_validation_replacement);
 725     }
 726
 727 end:
 728     av_bprint_finalize(&dstbuf, dstp);
 729     return ret;
 730 }
 731
 732 #define PRINT_STRING_OPT      1
 733 #define PRINT_STRING_VALIDATE 2
 734
 735 static inline int writer_print_string(WriterContext *wctx,
 736                                       const char *key, const char *val, int flags)
 737 {
 738     const struct section *section = wctx->section[wctx->level];
 739     int ret = 0;
 740
 741     if ((flags & PRINT_STRING_OPT)
 742         && !(wctx->writer->flags & WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS))
 743         return 0;
 744
 745     if (section->show_all_entries || av_dict_get(section->entries_to_show, key, NULL, 0)) {
 746         if (flags & PRINT_STRING_VALIDATE) {
 747             char *key1 = NULL, *val1 = NULL;
 748             ret = validate_string(wctx, &key1, key);
 749             if (ret < 0) goto end;
 750             ret = validate_string(wctx, &val1, val);
 751             if (ret < 0) goto end;
 752             wctx->writer->print_string(wctx, key1, val1);
 753         end:
 754             if (ret < 0) {
 755                 av_log(wctx, AV_LOG_ERROR,
 756                        "Invalid key=value string combination %s=%s in section %s\n",
 757                        key, val, section->unique_name);
 758             }
 759             av_free(key1);
 760             av_free(val1);
 761         } else {
 762             wctx->writer->print_string(wctx, key, val);
 763         }
 764
 765         wctx->nb_item[wctx->level]++;
 766     }
 767
 768     return ret;
 769 }
 770
 771 static inline void writer_print_rational(WriterContext *wctx,
 772                                          const char *key, AVRational q, char sep)
 773 {
 774     AVBPrint buf;
 775     av_bprint_init(&buf, 0, AV_BPRINT_SIZE_AUTOMATIC);
 776     av_bprintf(&buf, "%d%c%d", q.num, sep, q.den);
 777     writer_print_string(wctx, key, buf.str, 0);
 778 }
 779
 780 static void writer_print_time(WriterContext *wctx, const char *key,
 781                               int64_t ts, const AVRational *time_base, int is_duration)
 782 {
 783     char buf[128];
 784
 785     if ((!is_duration && ts == AV_NOPTS_VALUE) || (is_duration && ts == 0)) {
 786         writer_print_string(wctx, key, "N/A", PRINT_STRING_OPT);
 787     } else {
 788         double d = ts * av_q2d(*time_base);
 789         struct unit_value uv;
 790         uv.val.d = d;
 791         uv.unit = unit_second_str;
 792         value_string(buf, sizeof(buf), uv);
 793         writer_print_string(wctx, key, buf, 0);
 794     }
 795 }
 796
 797 static void writer_print_ts(WriterContext *wctx, const char *key, int64_t ts, int is_duration)
 798 {
 799     if ((!is_duration && ts == AV_NOPTS_VALUE) || (is_duration && ts == 0)) {
 800         writer_print_string(wctx, key, "N/A", PRINT_STRING_OPT);
 801     } else {
 802         writer_print_integer(wctx, key, ts);
 803     }
 804 }
 805
 806 static void writer_print_data(WriterContext *wctx, const char *name,
 807                               uint8_t *data, int size)
 808 {
 809     AVBPrint bp;
 810     int offset = 0, l, i;
 811
 812     av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED);
 813     av_bprintf(&bp, "\n");
 814     while (size) {
 815         av_bprintf(&bp, "%08x: ", offset);
 816         l = FFMIN(size, 16);
 817         for (i = 0; i < l; i++) {
 818             av_bprintf(&bp, "%02x", data[i]);
 819             if (i & 1)
 820                 av_bprintf(&bp, " ");
 821         }
 822         av_bprint_chars(&bp, ' ', 41 - 2 * i - i / 2);
 823         for (i = 0; i < l; i++)
 824             av_bprint_chars(&bp, data[i] - 32U < 95 ? data[i] : '.', 1);
 825         av_bprintf(&bp, "\n");
 826         offset += l;
 827         data   += l;
 828         size   -= l;
 829     }
 830     writer_print_string(wctx, name, bp.str, 0);
 831     av_bprint_finalize(&bp, NULL);
 832 }
 833
 834 static void writer_print_data_hash(WriterContext *wctx, const char *name,
 835                                    uint8_t *data, int size)
 836 {
 837     char *p, buf[AV_HASH_MAX_SIZE * 2 + 64] = { 0 };
 838
 839     if (!hash)
 840         return;
 841     av_hash_init(hash);
 842     av_hash_update(hash, data, size);
 843     snprintf(buf, sizeof(buf), "%s:", av_hash_get_name(hash));
 844     p = buf + strlen(buf);
 845     av_hash_final_hex(hash, p, buf + sizeof(buf) - p);
 846     writer_print_string(wctx, name, buf, 0);
 847 }
 848
 849 static void writer_print_integers(WriterContext *wctx, const char *name,
 850                                   uint8_t *data, int size, const char *format,
 851                                   int columns, int bytes, int offset_add)
 852 {
 853     AVBPrint bp;
 854     int offset = 0, l, i;
 855
 856     av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED);
 857     av_bprintf(&bp, "\n");
 858     while (size) {
 859         av_bprintf(&bp, "%08x: ", offset);
 860         l = FFMIN(size, columns);
 861         for (i = 0; i < l; i++) {
 862             if      (bytes == 1) av_bprintf(&bp, format, *data);
 863             else if (bytes == 2) av_bprintf(&bp, format, AV_RN16(data));
 864             else if (bytes == 4) av_bprintf(&bp, format, AV_RN32(data));
 865             data += bytes;
 866             size --;
 867         }
 868         av_bprintf(&bp, "\n");
 869         offset += offset_add;
 870     }
 871     writer_print_string(wctx, name, bp.str, 0);
 872     av_bprint_finalize(&bp, NULL);
 873 }
 874
 875 #define MAX_REGISTERED_WRITERS_NB 64
 876
 877 static const Writer *registered_writers[MAX_REGISTERED_WRITERS_NB + 1];
 878
 879 static int writer_register(const Writer *writer)
 880 {
 881     static int next_registered_writer_idx = 0;
 882
 883     if (next_registered_writer_idx == MAX_REGISTERED_WRITERS_NB)
 884         return AVERROR(ENOMEM);
 885
 886     registered_writers[next_registered_writer_idx++] = writer;
 887     return 0;
 888 }
 889
 890 static const Writer *writer_get_by_name(const char *name)
 891 {
 892     int i;
 893
 894     for (i = 0; registered_writers[i]; i++)
 895         if (!strcmp(registered_writers[i]->name, name))
 896             return registered_writers[i];
 897
 898     return NULL;
 899 }
 900
 901
 902 /* WRITERS */
 903
 904 #define DEFINE_WRITER_CLASS(name)                   \
 905 static const char *name##_get_name(void *ctx)       \
 906 {                                                   \
 907     return #name ;                                  \
 908 }                                                   \
 909 static const AVClass name##_class = {               \
 910     .class_name = #name,                            \
 911     .item_name  = name##_get_name,                  \
 912     .option     = name##_options                    \
 913 }
 914
 915 /* Default output */
 916
 917 typedef struct DefaultContext {
 918     const AVClass *class;
 919     int nokey;
 920     int noprint_wrappers;
 921     int nested_section[SECTION_MAX_NB_LEVELS];
 922 } DefaultContext;
 923
 924 #undef OFFSET
 925 #define OFFSET(x) offsetof(DefaultContext, x)
 926
 927 static const AVOption default_options[] = {
 928     { "noprint_wrappers", "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
 929     { "nw",               "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
 930     { "nokey",          "force no key printing",     OFFSET(nokey),          AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
 931     { "nk",             "force no key printing",     OFFSET(nokey),          AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
 932     {NULL},
 933 };
 934
 935 DEFINE_WRITER_CLASS(default);
 936
 937 /* lame uppercasing routine, assumes the string is lower case ASCII */
 938 static inline char *upcase_string(char *dst, size_t dst_size, const char *src)
 939 {
 940     int i;
 941     for (i = 0; src[i] && i < dst_size-1; i++)
 942         dst[i] = av_toupper(src[i]);
 943     dst[i] = 0;
 944     return dst;
 945 }
 946
 947 static void default_print_section_header(WriterContext *wctx)
 948 {
 949     DefaultContext *def = wctx->priv;
 950     char buf[32];
 951     const struct section *section = wctx->section[wctx->level];
 952     const struct section *parent_section = wctx->level ?
 953         wctx->section[wctx->level-1] : NULL;
 954
 955     av_bprint_clear(&wctx->section_pbuf[wctx->level]);
 956     if (parent_section &&
 957         !(parent_section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY))) {
 958         def->nested_section[wctx->level] = 1;
 959         av_bprintf(&wctx->section_pbuf[wctx->level], "%s%s:",
 960                    wctx->section_pbuf[wctx->level-1].str,
 961                    upcase_string(buf, sizeof(buf),
 962                                  av_x_if_null(section->element_name, section->name)));
 963     }
 964
 965     if (def->noprint_wrappers || def->nested_section[wctx->level])
 966         return;
 967
 968     if (!(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
 969         printf("[%s]\n", upcase_string(buf, sizeof(buf), section->name));
 970 }
 971
 972 static void default_print_section_footer(WriterContext *wctx)
 973 {
 974     DefaultContext *def = wctx->priv;
 975     const struct section *section = wctx->section[wctx->level];
 976     char buf[32];
 977
 978     if (def->noprint_wrappers || def->nested_section[wctx->level])
 979         return;
 980
 981     if (!(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
 982         printf("[/%s]\n", upcase_string(buf, sizeof(buf), section->name));
 983 }
 984
 985 static void default_print_str(WriterContext *wctx, const char *key, const char *value)
 986 {
 987     DefaultContext *def = wctx->priv;
 988
 989     if (!def->nokey)
 990         printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
 991     printf("%s\n", value);
 992 }
 993
 994 static void default_print_int(WriterContext *wctx, const char *key, long long int value)
 995 {
 996     DefaultContext *def = wctx->priv;
 997
 998     if (!def->nokey)
 999         printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
1000     printf("%lld\n", value);
1001 }
1002
1003 static const Writer default_writer = {
1004     .name                  = "default",
1005     .priv_size             = sizeof(DefaultContext),
1006     .print_section_header  = default_print_section_header,
1007     .print_section_footer  = default_print_section_footer,
1008     .print_integer         = default_print_int,
1009     .print_string          = default_print_str,
1010     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
1011     .priv_class            = &default_class,
1012 };
1013
1014 /* Compact output */
1015
1016 /**
1017  * Apply C-language-like string escaping.
1018  */
1019 static const char *c_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
1020 {
1021     const char *p;
1022
1023     for (p = src; *p; p++) {
1024         switch (*p) {
1025         case '\b': av_bprintf(dst, "%s", "\\b");  break;
1026         case '\f': av_bprintf(dst, "%s", "\\f");  break;
1027         case '\n': av_bprintf(dst, "%s", "\\n");  break;
1028         case '\r': av_bprintf(dst, "%s", "\\r");  break;
1029         case '\\': av_bprintf(dst, "%s", "\\\\"); break;
1030         default:
1031             if (*p == sep)
1032                 av_bprint_chars(dst, '\\', 1);
1033             av_bprint_chars(dst, *p, 1);
1034         }
1035     }
1036     return dst->str;
1037 }
1038
1039 /**
1040  * Quote fields containing special characters, check RFC4180.
1041  */
1042 static const char *csv_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
1043 {
1044     char meta_chars[] = { sep, '"', '\n', '\r', '\0' };
1045     int needs_quoting = !!src[strcspn(src, meta_chars)];
1046
1047     if (needs_quoting)
1048         av_bprint_chars(dst, '"', 1);
1049
1050     for (; *src; src++) {
1051         if (*src == '"')
1052             av_bprint_chars(dst, '"', 1);
1053         av_bprint_chars(dst, *src, 1);
1054     }
1055     if (needs_quoting)
1056         av_bprint_chars(dst, '"', 1);
1057     return dst->str;
1058 }
1059
1060 static const char *none_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
1061 {
1062     return src;
1063 }
1064
1065 typedef struct CompactContext {
1066     const AVClass *class;
1067     char *item_sep_str;
1068     char item_sep;
1069     int nokey;
1070     int print_section;
1071     char *escape_mode_str;
1072     const char * (*escape_str)(AVBPrint *dst, const char *src, const char sep, void *log_ctx);
1073     int nested_section[SECTION_MAX_NB_LEVELS];
1074     int has_nested_elems[SECTION_MAX_NB_LEVELS];
1075     int terminate_line[SECTION_MAX_NB_LEVELS];
1076 } CompactContext;
1077
1078 #undef OFFSET
1079 #define OFFSET(x) offsetof(CompactContext, x)
1080
1081 static const AVOption compact_options[]= {
1082     {"item_sep", "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str="|"},  CHAR_MIN, CHAR_MAX },
1083     {"s",        "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str="|"},  CHAR_MIN, CHAR_MAX },
1084     {"nokey",    "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=0},    0,        1        },
1085     {"nk",       "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=0},    0,        1        },
1086     {"escape",   "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"},  CHAR_MIN, CHAR_MAX },
1087     {"e",        "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"},  CHAR_MIN, CHAR_MAX },
1088     {"print_section", "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
1089     {"p",             "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
1090     {NULL},
1091 };
1092
1093 DEFINE_WRITER_CLASS(compact);
1094
1095 static av_cold int compact_init(WriterContext *wctx)
1096 {
1097     CompactContext *compact = wctx->priv;
1098
1099     if (strlen(compact->item_sep_str) != 1) {
1100         av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
1101                compact->item_sep_str);
1102         return AVERROR(EINVAL);
1103     }
1104     compact->item_sep = compact->item_sep_str[0];
1105
1106     if      (!strcmp(compact->escape_mode_str, "none")) compact->escape_str = none_escape_str;
1107     else if (!strcmp(compact->escape_mode_str, "c"   )) compact->escape_str = c_escape_str;
1108     else if (!strcmp(compact->escape_mode_str, "csv" )) compact->escape_str = csv_escape_str;
1109     else {
1110         av_log(wctx, AV_LOG_ERROR, "Unknown escape mode '%s'\n", compact->escape_mode_str);
1111         return AVERROR(EINVAL);
1112     }
1113
1114     return 0;
1115 }
1116
1117 static void compact_print_section_header(WriterContext *wctx)
1118 {
1119     CompactContext *compact = wctx->priv;
1120     const struct section *section = wctx->section[wctx->level];
1121     const struct section *parent_section = wctx->level ?
1122         wctx->section[wctx->level-1] : NULL;
1123     compact->terminate_line[wctx->level] = 1;
1124     compact->has_nested_elems[wctx->level] = 0;
1125
1126     av_bprint_clear(&wctx->section_pbuf[wctx->level]);
1127     if (!(section->flags & SECTION_FLAG_IS_ARRAY) && parent_section &&
1128         !(parent_section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY))) {
1129         compact->nested_section[wctx->level] = 1;
1130         compact->has_nested_elems[wctx->level-1] = 1;
1131         av_bprintf(&wctx->section_pbuf[wctx->level], "%s%s:",
1132                    wctx->section_pbuf[wctx->level-1].str,
1133                    (char *)av_x_if_null(section->element_name, section->name));
1134         wctx->nb_item[wctx->level] = wctx->nb_item[wctx->level-1];
1135     } else {
1136         if (parent_section && compact->has_nested_elems[wctx->level-1] &&
1137             (section->flags & SECTION_FLAG_IS_ARRAY)) {
1138             compact->terminate_line[wctx->level-1] = 0;
1139             printf("\n");
1140         }
1141         if (compact->print_section &&
1142             !(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
1143             printf("%s%c", section->name, compact->item_sep);
1144     }
1145 }
1146
1147 static void compact_print_section_footer(WriterContext *wctx)
1148 {
1149     CompactContext *compact = wctx->priv;
1150
1151     if (!compact->nested_section[wctx->level] &&
1152         compact->terminate_line[wctx->level] &&
1153         !(wctx->section[wctx->level]->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
1154         printf("\n");
1155 }
1156
1157 static void compact_print_str(WriterContext *wctx, const char *key, const char *value)
1158 {
1159     CompactContext *compact = wctx->priv;
1160     AVBPrint buf;
1161
1162     if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);
1163     if (!compact->nokey)
1164         printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
1165     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
1166     printf("%s", compact->escape_str(&buf, value, compact->item_sep, wctx));
1167     av_bprint_finalize(&buf, NULL);
1168 }
1169
1170 static void compact_print_int(WriterContext *wctx, const char *key, long long int value)
1171 {
1172     CompactContext *compact = wctx->priv;
1173
1174     if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);
1175     if (!compact->nokey)
1176         printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
1177     printf("%lld", value);
1178 }
1179
1180 static const Writer compact_writer = {
1181     .name                 = "compact",
1182     .priv_size            = sizeof(CompactContext),
1183     .init                 = compact_init,
1184     .print_section_header = compact_print_section_header,
1185     .print_section_footer = compact_print_section_footer,
1186     .print_integer        = compact_print_int,
1187     .print_string         = compact_print_str,
1188     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
1189     .priv_class           = &compact_class,
1190 };
1191
1192 /* CSV output */
1193
1194 #undef OFFSET
1195 #define OFFSET(x) offsetof(CompactContext, x)
1196
1197 static const AVOption csv_options[] = {
1198     {"item_sep", "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str=","},  CHAR_MIN, CHAR_MAX },
1199     {"s",        "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str=","},  CHAR_MIN, CHAR_MAX },
1200     {"nokey",    "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
1201     {"nk",       "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
1202     {"escape",   "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="csv"}, CHAR_MIN, CHAR_MAX },
1203     {"e",        "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="csv"}, CHAR_MIN, CHAR_MAX },
1204     {"print_section", "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
1205     {"p",             "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
1206     {NULL},
1207 };
1208
1209 DEFINE_WRITER_CLASS(csv);
1210
1211 static const Writer csv_writer = {
1212     .name                 = "csv",
1213     .priv_size            = sizeof(CompactContext),
1214     .init                 = compact_init,
1215     .print_section_header = compact_print_section_header,
1216     .print_section_footer = compact_print_section_footer,
1217     .print_integer        = compact_print_int,
1218     .print_string         = compact_print_str,
1219     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
1220     .priv_class           = &csv_class,
1221 };
1222
1223 /* Flat output */
1224
1225 typedef struct FlatContext {
1226     const AVClass *class;
1227     const char *sep_str;
1228     char sep;
1229     int hierarchical;
1230 } FlatContext;
1231
1232 #undef OFFSET
1233 #define OFFSET(x) offsetof(FlatContext, x)
1234
1235 static const AVOption flat_options[]= {
1236     {"sep_char", "set separator",    OFFSET(sep_str),    AV_OPT_TYPE_STRING, {.str="."},  CHAR_MIN, CHAR_MAX },
1237     {"s",        "set separator",    OFFSET(sep_str),    AV_OPT_TYPE_STRING, {.str="."},  CHAR_MIN, CHAR_MAX },
1238     {"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
1239     {"h",            "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
1240     {NULL},
1241 };
1242
1243 DEFINE_WRITER_CLASS(flat);
1244
1245 static av_cold int flat_init(WriterContext *wctx)
1246 {
1247     FlatContext *flat = wctx->priv;
1248
1249     if (strlen(flat->sep_str) != 1) {
1250         av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
1251                flat->sep_str);
1252         return AVERROR(EINVAL);
1253     }
1254     flat->sep = flat->sep_str[0];
1255
1256     return 0;
1257 }
1258
1259 static const char *flat_escape_key_str(AVBPrint *dst, const char *src, const char sep)
1260 {
1261     const char *p;
1262
1263     for (p = src; *p; p++) {
1264         if (!((*p >= '0' && *p <= '9') ||
1265               (*p >= 'a' && *p <= 'z') ||
1266               (*p >= 'A' && *p <= 'Z')))
1267             av_bprint_chars(dst, '_', 1);
1268         else
1269             av_bprint_chars(dst, *p, 1);
1270     }
1271     return dst->str;
1272 }
1273
1274 static const char *flat_escape_value_str(AVBPrint *dst, const char *src)
1275 {
1276     const char *p;
1277
1278     for (p = src; *p; p++) {
1279         switch (*p) {
1280         case '\n': av_bprintf(dst, "%s", "\\n");  break;
1281         case '\r': av_bprintf(dst, "%s", "\\r");  break;
1282         case '\\': av_bprintf(dst, "%s", "\\\\"); break;
1283         case '"':  av_bprintf(dst, "%s", "\\\""); break;
1284         case '`':  av_bprintf(dst, "%s", "\\`");  break;
1285         case '$':  av_bprintf(dst, "%s", "\\$");  break;
1286         default:   av_bprint_chars(dst, *p, 1);   break;
1287         }
1288     }
1289     return dst->str;
1290 }
1291
1292 static void flat_print_section_header(WriterContext *wctx)
1293 {
1294     FlatContext *flat = wctx->priv;
1295     AVBPrint *buf = &wctx->section_pbuf[wctx->level];
1296     const struct section *section = wctx->section[wctx->level];
1297     const struct section *parent_section = wctx->level ?
1298         wctx->section[wctx->level-1] : NULL;
1299
1300     /* build section header */
1301     av_bprint_clear(buf);
1302     if (!parent_section)
1303         return;
1304     av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);
1305
1306     if (flat->hierarchical ||
1307         !(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER))) {
1308         av_bprintf(buf, "%s%s", wctx->section[wctx->level]->name, flat->sep_str);
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%s", n, flat->sep_str);
1314         }
1315     }
1316 }
1317
1318 static void flat_print_int(WriterContext *wctx, const char *key, long long int value)
1319 {
1320     printf("%s%s=%lld\n", wctx->section_pbuf[wctx->level].str, key, value);
1321 }
1322
1323 static void flat_print_str(WriterContext *wctx, const char *key, const char *value)
1324 {
1325     FlatContext *flat = wctx->priv;
1326     AVBPrint buf;
1327
1328     printf("%s", wctx->section_pbuf[wctx->level].str);
1329     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
1330     printf("%s=", flat_escape_key_str(&buf, key, flat->sep));
1331     av_bprint_clear(&buf);
1332     printf("\"%s\"\n", flat_escape_value_str(&buf, value));
1333     av_bprint_finalize(&buf, NULL);
1334 }
1335
1336 static const Writer flat_writer = {
1337     .name                  = "flat",
1338     .priv_size             = sizeof(FlatContext),
1339     .init                  = flat_init,
1340     .print_section_header  = flat_print_section_header,
1341     .print_integer         = flat_print_int,
1342     .print_string          = flat_print_str,
1343     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS|WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
1344     .priv_class            = &flat_class,
1345 };
1346
1347 /* INI format output */
1348
1349 typedef struct INIContext {
1350     const AVClass *class;
1351     int hierarchical;
1352 } INIContext;
1353
1354 #undef OFFSET
1355 #define OFFSET(x) offsetof(INIContext, x)
1356
1357 static const AVOption ini_options[] = {
1358     {"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
1359     {"h",            "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
1360     {NULL},
1361 };
1362
1363 DEFINE_WRITER_CLASS(ini);
1364
1365 static char *ini_escape_str(AVBPrint *dst, const char *src)
1366 {
1367     int i = 0;
1368     char c = 0;
1369
1370     while (c = src[i++]) {
1371         switch (c) {
1372         case '\b': av_bprintf(dst, "%s", "\\b"); break;
1373         case '\f': av_bprintf(dst, "%s", "\\f"); break;
1374         case '\n': av_bprintf(dst, "%s", "\\n"); break;
1375         case '\r': av_bprintf(dst, "%s", "\\r"); break;
1376         case '\t': av_bprintf(dst, "%s", "\\t"); break;
1377         case '\\':
1378         case '#' :
1379         case '=' :
1380         case ':' : av_bprint_chars(dst, '\\', 1);
1381         default:
1382             if ((unsigned char)c < 32)
1383                 av_bprintf(dst, "\\x00%02x", c & 0xff);
1384             else
1385                 av_bprint_chars(dst, c, 1);
1386             break;
1387         }
1388     }
1389     return dst->str;
1390 }
1391
1392 static void ini_print_section_header(WriterContext *wctx)
1393 {
1394     INIContext *ini = wctx->priv;
1395     AVBPrint *buf = &wctx->section_pbuf[wctx->level];
1396     const struct section *section = wctx->section[wctx->level];
1397     const struct section *parent_section = wctx->level ?
1398         wctx->section[wctx->level-1] : NULL;
1399
1400     av_bprint_clear(buf);
1401     if (!parent_section) {
1402         printf("# ffprobe output\n\n");
1403         return;
1404     }
1405
1406     if (wctx->nb_item[wctx->level-1])
1407         printf("\n");
1408
1409     av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);
1410     if (ini->hierarchical ||
1411         !(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER))) {
1412         av_bprintf(buf, "%s%s", buf->str[0] ? "." : "", wctx->section[wctx->level]->name);
1413
1414         if (parent_section->flags & SECTION_FLAG_IS_ARRAY) {
1415             int n = parent_section->id == SECTION_ID_PACKETS_AND_FRAMES ?
1416                 wctx->nb_section_packet_frame : wctx->nb_item[wctx->level-1];
1417             av_bprintf(buf, ".%d", n);
1418         }
1419     }
1420
1421     if (!(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER)))
1422         printf("[%s]\n", buf->str);
1423 }
1424
1425 static void ini_print_str(WriterContext *wctx, const char *key, const char *value)
1426 {
1427     AVBPrint buf;
1428
1429     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
1430     printf("%s=", ini_escape_str(&buf, key));
1431     av_bprint_clear(&buf);
1432     printf("%s\n", ini_escape_str(&buf, value));
1433     av_bprint_finalize(&buf, NULL);
1434 }
1435
1436 static void ini_print_int(WriterContext *wctx, const char *key, long long int value)
1437 {
1438     printf("%s=%lld\n", key, value);
1439 }
1440
1441 static const Writer ini_writer = {
1442     .name                  = "ini",
1443     .priv_size             = sizeof(INIContext),
1444     .print_section_header  = ini_print_section_header,
1445     .print_integer         = ini_print_int,
1446     .print_string          = ini_print_str,
1447     .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS|WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
1448     .priv_class            = &ini_class,
1449 };
1450
1451 /* JSON output */
1452
1453 typedef struct JSONContext {
1454     const AVClass *class;
1455     int indent_level;
1456     int compact;
1457     const char *item_sep, *item_start_end;
1458 } JSONContext;
1459
1460 #undef OFFSET
1461 #define OFFSET(x) offsetof(JSONContext, x)
1462
1463 static const AVOption json_options[]= {
1464     { "compact", "enable compact output", OFFSET(compact), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
1465     { "c",       "enable compact output", OFFSET(compact), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
1466     { NULL }
1467 };
1468
1469 DEFINE_WRITER_CLASS(json);
1470
1471 static av_cold int json_init(WriterContext *wctx)
1472 {
1473     JSONContext *json = wctx->priv;
1474
1475     json->item_sep       = json->compact ? ", " : ",\n";
1476     json->item_start_end = json->compact ? " "  : "\n";
1477
1478     return 0;
1479 }
1480
1481 static const char *json_escape_str(AVBPrint *dst, const char *src, void *log_ctx)
1482 {
1483     static const char json_escape[] = {'"', '\\', '\b', '\f', '\n', '\r', '\t', 0};
1484     static const char json_subst[]  = {'"', '\\',  'b',  'f',  'n',  'r',  't', 0};
1485     const char *p;
1486
1487     for (p = src; *p; p++) {
1488         char *s = strchr(json_escape, *p);
1489         if (s) {
1490             av_bprint_chars(dst, '\\', 1);
1491             av_bprint_chars(dst, json_subst[s - json_escape], 1);
1492         } else if ((unsigned char)*p < 32) {
1493             av_bprintf(dst, "\\u00%02x", *p & 0xff);
1494         } else {
1495             av_bprint_chars(dst, *p, 1);
1496         }
1497     }
1498     return dst->str;
1499 }
1500
1501 #define JSON_INDENT() printf("%*c", json->indent_level * 4, ' ')
1502
1503 static void json_print_section_header(WriterContext *wctx)
1504 {
1505     JSONContext *json = wctx->priv;
1506     AVBPrint buf;
1507     const struct section *section = wctx->section[wctx->level];
1508     const struct section *parent_section = wctx->level ?
1509         wctx->section[wctx->level-1] : NULL;
1510
1511     if (wctx->level && wctx->nb_item[wctx->level-1])
1512         printf(",\n");
1513
1514     if (section->flags & SECTION_FLAG_IS_WRAPPER) {
1515         printf("{\n");
1516         json->indent_level++;
1517     } else {
1518         av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
1519         json_escape_str(&buf, section->name, wctx);
1520         JSON_INDENT();
1521
1522         json->indent_level++;
1523         if (section->flags & SECTION_FLAG_IS_ARRAY) {
1524             printf("\"%s\": [\n", buf.str);
1525         } else if (parent_section && !(parent_section->flags & SECTION_FLAG_IS_ARRAY)) {
1526             printf("\"%s\": {%s", buf.str, json->item_start_end);
1527         } else {
1528             printf("{%s", json->item_start_end);
1529
1530             /* this is required so the parser can distinguish between packets and frames */
1531             if (parent_section && parent_section->id == SECTION_ID_PACKETS_AND_FRAMES) {
1532                 if (!json->compact)
1533                     JSON_INDENT();
1534                 printf("\"type\": \"%s\"%s", section->name, json->item_sep);
1535             }
1536         }
1537         av_bprint_finalize(&buf, NULL);
1538     }
1539 }
1540
1541 static void json_print_section_footer(WriterContext *wctx)
1542 {
1543     JSONContext *json = wctx->priv;
1544     const struct section *section = wctx->section[wctx->level];
1545
1546     if (wctx->level == 0) {
1547         json->indent_level--;
1548         printf("\n}\n");
1549     } else if (section->flags & SECTION_FLAG_IS_ARRAY) {
1550         printf("\n");
1551         json->indent_level--;
1552         JSON_INDENT();
1553         printf("]");
1554     } else {
1555         printf("%s", json->item_start_end);
1556         json->indent_level--;
1557         if (!json->compact)
1558             JSON_INDENT();
1559         printf("}");
1560     }
1561 }
1562
1563 static inline void json_print_item_str(WriterContext *wctx,
1564                                        const char *key, const char *value)
1565 {
1566     AVBPrint buf;
1567
1568     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
1569     printf("\"%s\":", json_escape_str(&buf, key,   wctx));
1570     av_bprint_clear(&buf);
1571     printf(" \"%s\"", json_escape_str(&buf, value, wctx));
1572     av_bprint_finalize(&buf, NULL);
1573 }
1574
1575 static void json_print_str(WriterContext *wctx, const char *key, const char *value)
1576 {
1577     JSONContext *json = wctx->priv;
1578
1579     if (wctx->nb_item[wctx->level])
1580         printf("%s", json->item_sep);
1581     if (!json->compact)
1582         JSON_INDENT();
1583     json_print_item_str(wctx, key, value);
1584 }
1585
1586 static void json_print_int(WriterContext *wctx, const char *key, long long int value)
1587 {
1588     JSONContext *json = wctx->priv;
1589     AVBPrint buf;
1590
1591     if (wctx->nb_item[wctx->level])
1592         printf("%s", json->item_sep);
1593     if (!json->compact)
1594         JSON_INDENT();
1595
1596     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
1597     printf("\"%s\": %lld", json_escape_str(&buf, key, wctx), value);
1598     av_bprint_finalize(&buf, NULL);
1599 }
1600
1601 static const Writer json_writer = {
1602     .name                 = "json",
1603     .priv_size            = sizeof(JSONContext),
1604     .init                 = json_init,
1605     .print_section_header = json_print_section_header,
1606     .print_section_footer = json_print_section_footer,
1607     .print_integer        = json_print_int,
1608     .print_string         = json_print_str,
1609     .flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
1610     .priv_class           = &json_class,
1611 };
1612
1613 /* XML output */
1614
1615 typedef struct XMLContext {
1616     const AVClass *class;
1617     int within_tag;
1618     int indent_level;
1619     int fully_qualified;
1620     int xsd_strict;
1621 } XMLContext;
1622
1623 #undef OFFSET
1624 #define OFFSET(x) offsetof(XMLContext, x)
1625
1626 static const AVOption xml_options[] = {
1627     {"fully_qualified", "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
1628     {"q",               "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
1629     {"xsd_strict",      "ensure that the output is XSD compliant",         OFFSET(xsd_strict),      AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
1630     {"x",               "ensure that the output is XSD compliant",         OFFSET(xsd_strict),      AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
1631     {NULL},
1632 };
1633
1634 DEFINE_WRITER_CLASS(xml);
1635
1636 static av_cold int xml_init(WriterContext *wctx)
1637 {
1638     XMLContext *xml = wctx->priv;
1639
1640     if (xml->xsd_strict) {
1641         xml->fully_qualified = 1;
1642 #define CHECK_COMPLIANCE(opt, opt_name)                                 \
1643         if (opt) {                                                      \
1644             av_log(wctx, AV_LOG_ERROR,                                  \
1645                    "XSD-compliant output selected but option '%s' was selected, XML output may be non-compliant.\n" \
1646                    "You need to disable such option with '-no%s'\n", opt_name, opt_name); \
1647             return AVERROR(EINVAL);                                     \
1648         }
1649         CHECK_COMPLIANCE(show_private_data, "private");
1650         CHECK_COMPLIANCE(show_value_unit,   "unit");
1651         CHECK_COMPLIANCE(use_value_prefix,  "prefix");
1652
1653         if (do_show_frames && do_show_packets) {
1654             av_log(wctx, AV_LOG_ERROR,
1655                    "Interleaved frames and packets are not allowed in XSD. "
1656                    "Select only one between the -show_frames and the -show_packets options.\n");
1657             return AVERROR(EINVAL);
1658         }
1659     }
1660
1661     return 0;
1662 }
1663
1664 static const char *xml_escape_str(AVBPrint *dst, const char *src, void *log_ctx)
1665 {
1666     const char *p;
1667
1668     for (p = src; *p; p++) {
1669         switch (*p) {
1670         case '&' : av_bprintf(dst, "%s", "&amp;");  break;
1671         case '<' : av_bprintf(dst, "%s", "&lt;");   break;
1672         case '>' : av_bprintf(dst, "%s", "&gt;");   break;
1673         case '"' : av_bprintf(dst, "%s", "&quot;"); break;
1674         case '\'': av_bprintf(dst, "%s", "&apos;"); break;
1675         default: av_bprint_chars(dst, *p, 1);
1676         }
1677     }
1678
1679     return dst->str;
1680 }
1681
1682 #define XML_INDENT() printf("%*c", xml->indent_level * 4, ' ')
1683
1684 static void xml_print_section_header(WriterContext *wctx)
1685 {
1686     XMLContext *xml = wctx->priv;
1687     const struct section *section = wctx->section[wctx->level];
1688     const struct section *parent_section = wctx->level ?
1689         wctx->section[wctx->level-1] : NULL;
1690
1691     if (wctx->level == 0) {
1692         const char *qual = " xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' "
1693             "xmlns:ffprobe='http://www.ffmpeg.org/schema/ffprobe' "
1694             "xsi:schemaLocation='http://www.ffmpeg.org/schema/ffprobe ffprobe.xsd'";
1695
1696         printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
1697         printf("<%sffprobe%s>\n",
1698                xml->fully_qualified ? "ffprobe:" : "",
1699                xml->fully_qualified ? qual : "");
1700         return;
1701     }
1702
1703     if (xml->within_tag) {
1704         xml->within_tag = 0;
1705         printf(">\n");
1706     }
1707     if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {
1708         xml->indent_level++;
1709     } else {
1710         if (parent_section && (parent_section->flags & SECTION_FLAG_IS_WRAPPER) &&
1711             wctx->level && wctx->nb_item[wctx->level-1])
1712             printf("\n");
1713         xml->indent_level++;
1714
1715         if (section->flags & SECTION_FLAG_IS_ARRAY) {
1716             XML_INDENT(); printf("<%s>\n", section->name);
1717         } else {
1718             XML_INDENT(); printf("<%s ", section->name);
1719             xml->within_tag = 1;
1720         }
1721     }
1722 }
1723
1724 static void xml_print_section_footer(WriterContext *wctx)
1725 {
1726     XMLContext *xml = wctx->priv;
1727     const struct section *section = wctx->section[wctx->level];
1728
1729     if (wctx->level == 0) {
1730         printf("</%sffprobe>\n", xml->fully_qualified ? "ffprobe:" : "");
1731     } else if (xml->within_tag) {
1732         xml->within_tag = 0;
1733         printf("/>\n");
1734         xml->indent_level--;
1735     } else if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {
1736         xml->indent_level--;
1737     } else {
1738         XML_INDENT(); printf("</%s>\n", section->name);
1739         xml->indent_level--;
1740     }
1741 }
1742
1743 static void xml_print_str(WriterContext *wctx, const char *key, const char *value)
1744 {
1745     AVBPrint buf;
1746     XMLContext *xml = wctx->priv;
1747     const struct section *section = wctx->section[wctx->level];
1748
1749     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
1750
1751     if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {
1752         XML_INDENT();
1753         printf("<%s key=\"%s\"",
1754                section->element_name, xml_escape_str(&buf, key, wctx));
1755         av_bprint_clear(&buf);
1756         printf(" value=\"%s\"/>\n", xml_escape_str(&buf, value, wctx));
1757     } else {
1758         if (wctx->nb_item[wctx->level])
1759             printf(" ");
1760         printf("%s=\"%s\"", key, xml_escape_str(&buf, value, wctx));
1761     }
1762
1763     av_bprint_finalize(&buf, NULL);
1764 }
1765
1766 static void xml_print_int(WriterContext *wctx, const char *key, long long int value)
1767 {
1768     if (wctx->nb_item[wctx->level])
1769         printf(" ");
1770     printf("%s=\"%lld\"", key, value);
1771 }
1772
1773 static Writer xml_writer = {
1774     .name                 = "xml",
1775     .priv_size            = sizeof(XMLContext),
1776     .init                 = xml_init,
1777     .print_section_header = xml_print_section_header,
1778     .print_section_footer = xml_print_section_footer,
1779     .print_integer        = xml_print_int,
1780     .print_string         = xml_print_str,
1781     .flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
1782     .priv_class           = &xml_class,
1783 };
1784
1785 static void writer_register_all(void)
1786 {
1787     static int initialized;
1788
1789     if (initialized)
1790         return;
1791     initialized = 1;
1792
1793     writer_register(&default_writer);
1794     writer_register(&compact_writer);
1795     writer_register(&csv_writer);
1796     writer_register(&flat_writer);
1797     writer_register(&ini_writer);
1798     writer_register(&json_writer);
1799     writer_register(&xml_writer);
1800 }
1801
1802 #define print_fmt(k, f, ...) do {              \
1803     av_bprint_clear(&pbuf);                    \
1804     av_bprintf(&pbuf, f, __VA_ARGS__);         \
1805     writer_print_string(w, k, pbuf.str, 0);    \
1806 } while (0)
1807
1808 #define print_int(k, v)         writer_print_integer(w, k, v)
1809 #define print_q(k, v, s)        writer_print_rational(w, k, v, s)
1810 #define print_str(k, v)         writer_print_string(w, k, v, 0)
1811 #define print_str_opt(k, v)     writer_print_string(w, k, v, PRINT_STRING_OPT)
1812 #define print_str_validate(k, v) writer_print_string(w, k, v, PRINT_STRING_VALIDATE)
1813 #define print_time(k, v, tb)    writer_print_time(w, k, v, tb, 0)
1814 #define print_ts(k, v)          writer_print_ts(w, k, v, 0)
1815 #define print_duration_time(k, v, tb) writer_print_time(w, k, v, tb, 1)
1816 #define print_duration_ts(k, v)       writer_print_ts(w, k, v, 1)
1817 #define print_val(k, v, u) do {                                     \
1818     struct unit_value uv;                                           \
1819     uv.val.i = v;                                                   \
1820     uv.unit = u;                                                    \
1821     writer_print_string(w, k, value_string(val_str, sizeof(val_str), uv), 0); \
1822 } while (0)
1823
1824 #define print_section_header(s) writer_print_section_header(w, s)
1825 #define print_section_footer(s) writer_print_section_footer(w, s)
1826
1827 #define REALLOCZ_ARRAY_STREAM(ptr, cur_n, new_n)                        \
1828 {                                                                       \
1829     ret = av_reallocp_array(&(ptr), (new_n), sizeof(*(ptr)));           \
1830     if (ret < 0)                                                        \
1831         goto end;                                                       \
1832     memset( (ptr) + (cur_n), 0, ((new_n) - (cur_n)) * sizeof(*(ptr)) ); \
1833 }
1834
1835 static inline int show_tags(WriterContext *w, AVDictionary *tags, int section_id)
1836 {
1837     AVDictionaryEntry *tag = NULL;
1838     int ret = 0;
1839
1840     if (!tags)
1841         return 0;
1842     writer_print_section_header(w, section_id);
1843
1844     while ((tag = av_dict_get(tags, "", tag, AV_DICT_IGNORE_SUFFIX))) {
1845         if ((ret = print_str_validate(tag->key, tag->value)) < 0)
1846             break;
1847     }
1848     writer_print_section_footer(w);
1849
1850     return ret;
1851 }
1852
1853 static void print_pkt_side_data(WriterContext *w,
1854                                 AVCodecParameters *par,
1855                                 const AVPacketSideData *side_data,
1856                                 int nb_side_data,
1857                                 SectionID id_data_list,
1858                                 SectionID id_data)
1859 {
1860     int i;
1861
1862     writer_print_section_header(w, id_data_list);
1863     for (i = 0; i < nb_side_data; i++) {
1864         const AVPacketSideData *sd = &side_data[i];
1865         const char *name = av_packet_side_data_name(sd->type);
1866
1867         writer_print_section_header(w, id_data);
1868         print_str("side_data_type", name ? name : "unknown");
1869         if (sd->type == AV_PKT_DATA_DISPLAYMATRIX && sd->size >= 9*4) {
1870             writer_print_integers(w, "displaymatrix", sd->data, 9, " %11d", 3, 4, 1);
1871             print_int("rotation", av_display_rotation_get((int32_t *)sd->data));
1872         } else if (sd->type == AV_PKT_DATA_STEREO3D) {
1873             const AVStereo3D *stereo = (AVStereo3D *)sd->data;
1874             print_str("type", av_stereo3d_type_name(stereo->type));
1875             print_int("inverted", !!(stereo->flags & AV_STEREO3D_FLAG_INVERT));
1876         } else if (sd->type == AV_PKT_DATA_SPHERICAL) {
1877             const AVSphericalMapping *spherical = (AVSphericalMapping *)sd->data;
1878             print_str("projection", av_spherical_projection_name(spherical->projection));
1879             if (spherical->projection == AV_SPHERICAL_CUBEMAP) {
1880                 print_int("padding", spherical->padding);
1881             } else if (spherical->projection == AV_SPHERICAL_EQUIRECTANGULAR_TILE) {
1882                 size_t l, t, r, b;
1883                 av_spherical_tile_bounds(spherical, par->width, par->height,
1884                                          &l, &t, &r, &b);
1885                 print_int("bound_left", l);
1886                 print_int("bound_top", t);
1887                 print_int("bound_right", r);
1888                 print_int("bound_bottom", b);
1889             }
1890
1891             print_int("yaw", (double) spherical->yaw / (1 << 16));
1892             print_int("pitch", (double) spherical->pitch / (1 << 16));
1893             print_int("roll", (double) spherical->roll / (1 << 16));
1894         } else if (sd->type == AV_PKT_DATA_SKIP_SAMPLES && sd->size == 10) {
1895             print_int("skip_samples",    AV_RL32(sd->data));
1896             print_int("discard_padding", AV_RL32(sd->data + 4));
1897             print_int("skip_reason",     AV_RL8(sd->data + 8));
1898             print_int("discard_reason",  AV_RL8(sd->data + 9));
1899         } else if (sd->type == AV_PKT_DATA_MASTERING_DISPLAY_METADATA) {
1900             AVMasteringDisplayMetadata *metadata = (AVMasteringDisplayMetadata *)sd->data;
1901
1902             if (metadata->has_primaries) {
1903                 print_q("red_x", metadata->display_primaries[0][0], '/');
1904                 print_q("red_y", metadata->display_primaries[0][1], '/');
1905                 print_q("green_x", metadata->display_primaries[1][0], '/');
1906                 print_q("green_y", metadata->display_primaries[1][1], '/');
1907                 print_q("blue_x", metadata->display_primaries[2][0], '/');
1908                 print_q("blue_y", metadata->display_primaries[2][1], '/');
1909
1910                 print_q("white_point_x", metadata->white_point[0], '/');
1911                 print_q("white_point_y", metadata->white_point[1], '/');
1912             }
1913
1914             if (metadata->has_luminance) {
1915                 print_q("min_luminance", metadata->min_luminance, '/');
1916                 print_q("max_luminance", metadata->max_luminance, '/');
1917             }
1918         } else if (sd->type == AV_PKT_DATA_CONTENT_LIGHT_LEVEL) {
1919             AVContentLightMetadata *metadata = (AVContentLightMetadata *)sd->data;
1920             print_int("max_content", metadata->MaxCLL);
1921             print_int("max_average", metadata->MaxFALL);
1922         }
1923         writer_print_section_footer(w);
1924     }
1925     writer_print_section_footer(w);
1926 }
1927
1928 static void clear_log(int need_lock)
1929 {
1930     int i;
1931
1932     if (need_lock)
1933         pthread_mutex_lock(&log_mutex);
1934     for (i=0; i<log_buffer_size; i++) {
1935         av_freep(&log_buffer[i].context_name);
1936         av_freep(&log_buffer[i].parent_name);
1937         av_freep(&log_buffer[i].log_message);
1938     }
1939     log_buffer_size = 0;
1940     if(need_lock)
1941         pthread_mutex_unlock(&log_mutex);
1942 }
1943
1944 static int show_log(WriterContext *w, int section_ids, int section_id, int log_level)
1945 {
1946     int i;
1947     pthread_mutex_lock(&log_mutex);
1948     if (!log_buffer_size) {
1949         pthread_mutex_unlock(&log_mutex);
1950         return 0;
1951     }
1952     writer_print_section_header(w, section_ids);
1953
1954     for (i=0; i<log_buffer_size; i++) {
1955         if (log_buffer[i].log_level <= log_level) {
1956             writer_print_section_header(w, section_id);
1957             print_str("context", log_buffer[i].context_name);
1958             print_int("level", log_buffer[i].log_level);
1959             print_int("category", log_buffer[i].category);
1960             if (log_buffer[i].parent_name) {
1961                 print_str("parent_context", log_buffer[i].parent_name);
1962                 print_int("parent_category", log_buffer[i].parent_category);
1963             } else {
1964                 print_str_opt("parent_context", "N/A");
1965                 print_str_opt("parent_category", "N/A");
1966             }
1967             print_str("message", log_buffer[i].log_message);
1968             writer_print_section_footer(w);
1969         }
1970     }
1971     clear_log(0);
1972     pthread_mutex_unlock(&log_mutex);
1973
1974     writer_print_section_footer(w);
1975
1976     return 0;
1977 }
1978
1979 static void show_packet(WriterContext *w, InputFile *ifile, AVPacket *pkt, int packet_idx)
1980 {
1981     char val_str[128];
1982     AVStream *st = ifile->streams[pkt->stream_index].st;
1983     AVBPrint pbuf;
1984     const char *s;
1985
1986     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
1987
1988     writer_print_section_header(w, SECTION_ID_PACKET);
1989
1990     s = av_get_media_type_string(st->codecpar->codec_type);
1991     if (s) print_str    ("codec_type", s);
1992     else   print_str_opt("codec_type", "unknown");
1993     print_int("stream_index",     pkt->stream_index);
1994     print_ts  ("pts",             pkt->pts);
1995     print_time("pts_time",        pkt->pts, &st->time_base);
1996     print_ts  ("dts",             pkt->dts);
1997     print_time("dts_time",        pkt->dts, &st->time_base);
1998     print_duration_ts("duration",        pkt->duration);
1999     print_duration_time("duration_time", pkt->duration, &st->time_base);
2000     print_duration_ts("convergence_duration", pkt->convergence_duration);
2001     print_duration_time("convergence_duration_time", pkt->convergence_duration, &st->time_base);
2002     print_val("size",             pkt->size, unit_byte_str);
2003     if (pkt->pos != -1) print_fmt    ("pos", "%"PRId64, pkt->pos);
2004     else                print_str_opt("pos", "N/A");
2005     print_fmt("flags", "%c%c",      pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_',
2006               pkt->flags & AV_PKT_FLAG_DISCARD ? 'D' : '_');
2007
2008     if (pkt->side_data_elems) {
2009         int size;
2010         const uint8_t *side_metadata;
2011
2012         side_metadata = av_packet_get_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA, &size);
2013         if (side_metadata && size && do_show_packet_tags) {
2014             AVDictionary *dict = NULL;
2015             if (av_packet_unpack_dictionary(side_metadata, size, &dict) >= 0)
2016                 show_tags(w, dict, SECTION_ID_PACKET_TAGS);
2017             av_dict_free(&dict);
2018         }
2019
2020         print_pkt_side_data(w, st->codecpar, pkt->side_data, pkt->side_data_elems,
2021                             SECTION_ID_PACKET_SIDE_DATA_LIST,
2022                             SECTION_ID_PACKET_SIDE_DATA);
2023     }
2024
2025     if (do_show_data)
2026         writer_print_data(w, "data", pkt->data, pkt->size);
2027     writer_print_data_hash(w, "data_hash", pkt->data, pkt->size);
2028     writer_print_section_footer(w);
2029
2030     av_bprint_finalize(&pbuf, NULL);
2031     fflush(stdout);
2032 }
2033
2034 static void show_subtitle(WriterContext *w, AVSubtitle *sub, AVStream *stream,
2035                           AVFormatContext *fmt_ctx)
2036 {
2037     AVBPrint pbuf;
2038
2039     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
2040
2041     writer_print_section_header(w, SECTION_ID_SUBTITLE);
2042
2043     print_str ("media_type",         "subtitle");
2044     print_ts  ("pts",                 sub->pts);
2045     print_time("pts_time",            sub->pts, &AV_TIME_BASE_Q);
2046     print_int ("format",              sub->format);
2047     print_int ("start_display_time",  sub->start_display_time);
2048     print_int ("end_display_time",    sub->end_display_time);
2049     print_int ("num_rects",           sub->num_rects);
2050
2051     writer_print_section_footer(w);
2052
2053     av_bprint_finalize(&pbuf, NULL);
2054     fflush(stdout);
2055 }
2056
2057 static void show_frame(WriterContext *w, AVFrame *frame, AVStream *stream,
2058                        AVFormatContext *fmt_ctx)
2059 {
2060     AVBPrint pbuf;
2061     char val_str[128];
2062     const char *s;
2063     int i;
2064
2065     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
2066
2067     writer_print_section_header(w, SECTION_ID_FRAME);
2068
2069     s = av_get_media_type_string(stream->codecpar->codec_type);
2070     if (s) print_str    ("media_type", s);
2071     else   print_str_opt("media_type", "unknown");
2072     print_int("stream_index",           stream->index);
2073     print_int("key_frame",              frame->key_frame);
2074     print_ts  ("pkt_pts",               frame->pts);
2075     print_time("pkt_pts_time",          frame->pts, &stream->time_base);
2076     print_ts  ("pkt_dts",               frame->pkt_dts);
2077     print_time("pkt_dts_time",          frame->pkt_dts, &stream->time_base);
2078     print_ts  ("best_effort_timestamp", frame->best_effort_timestamp);
2079     print_time("best_effort_timestamp_time", frame->best_effort_timestamp, &stream->time_base);
2080     print_duration_ts  ("pkt_duration",      frame->pkt_duration);
2081     print_duration_time("pkt_duration_time", frame->pkt_duration, &stream->time_base);
2082     if (frame->pkt_pos != -1) print_fmt    ("pkt_pos", "%"PRId64, frame->pkt_pos);
2083     else                      print_str_opt("pkt_pos", "N/A");
2084     if (frame->pkt_size != -1) print_val    ("pkt_size", frame->pkt_size, unit_byte_str);
2085     else                       print_str_opt("pkt_size", "N/A");
2086
2087     switch (stream->codecpar->codec_type) {
2088         AVRational sar;
2089
2090     case AVMEDIA_TYPE_VIDEO:
2091         print_int("width",                  frame->width);
2092         print_int("height",                 frame->height);
2093         s = av_get_pix_fmt_name(frame->format);
2094         if (s) print_str    ("pix_fmt", s);
2095         else   print_str_opt("pix_fmt", "unknown");
2096         sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, frame);
2097         if (sar.num) {
2098             print_q("sample_aspect_ratio", sar, ':');
2099         } else {
2100             print_str_opt("sample_aspect_ratio", "N/A");
2101         }
2102         print_fmt("pict_type",              "%c", av_get_picture_type_char(frame->pict_type));
2103         print_int("coded_picture_number",   frame->coded_picture_number);
2104         print_int("display_picture_number", frame->display_picture_number);
2105         print_int("interlaced_frame",       frame->interlaced_frame);
2106         print_int("top_field_first",        frame->top_field_first);
2107         print_int("repeat_pict",            frame->repeat_pict);
2108
2109         if (frame->color_range != AVCOL_RANGE_UNSPECIFIED)
2110             print_str("color_range", av_color_range_name(frame->color_range));
2111         else
2112             print_str_opt("color_range", av_color_range_name(frame->color_range));
2113
2114         if (frame->colorspace != AVCOL_SPC_UNSPECIFIED)
2115             print_str("color_space", av_color_space_name(frame->colorspace));
2116         else
2117             print_str_opt("color_space", av_color_space_name(frame->colorspace));
2118
2119         if (frame->color_primaries != AVCOL_PRI_UNSPECIFIED)
2120             print_str("color_primaries", av_color_primaries_name(frame->color_primaries));
2121         else
2122             print_str_opt("color_primaries", av_color_primaries_name(frame->color_primaries));
2123
2124         if (frame->color_trc != AVCOL_TRC_UNSPECIFIED)
2125             print_str("color_transfer", av_color_transfer_name(frame->color_trc));
2126         else
2127             print_str_opt("color_transfer", av_color_transfer_name(frame->color_trc));
2128
2129         if (frame->chroma_location != AVCHROMA_LOC_UNSPECIFIED)
2130             print_str("chroma_location", av_chroma_location_name(frame->chroma_location));
2131         else
2132             print_str_opt("chroma_location", av_chroma_location_name(frame->chroma_location));
2133         break;
2134
2135     case AVMEDIA_TYPE_AUDIO:
2136         s = av_get_sample_fmt_name(frame->format);
2137         if (s) print_str    ("sample_fmt", s);
2138         else   print_str_opt("sample_fmt", "unknown");
2139         print_int("nb_samples",         frame->nb_samples);
2140         print_int("channels", frame->channels);
2141         if (frame->channel_layout) {
2142             av_bprint_clear(&pbuf);
2143             av_bprint_channel_layout(&pbuf, frame->channels,
2144                                      frame->channel_layout);
2145             print_str    ("channel_layout", pbuf.str);
2146         } else
2147             print_str_opt("channel_layout", "unknown");
2148         break;
2149     }
2150     if (do_show_frame_tags)
2151         show_tags(w, frame->metadata, SECTION_ID_FRAME_TAGS);
2152     if (do_show_log)
2153         show_log(w, SECTION_ID_FRAME_LOGS, SECTION_ID_FRAME_LOG, do_show_log);
2154     if (frame->nb_side_data) {
2155         writer_print_section_header(w, SECTION_ID_FRAME_SIDE_DATA_LIST);
2156         for (i = 0; i < frame->nb_side_data; i++) {
2157             AVFrameSideData *sd = frame->side_data[i];
2158             const char *name;
2159
2160             writer_print_section_header(w, SECTION_ID_FRAME_SIDE_DATA);
2161             name = av_frame_side_data_name(sd->type);
2162             print_str("side_data_type", name ? name : "unknown");
2163             if (sd->type == AV_FRAME_DATA_DISPLAYMATRIX && sd->size >= 9*4) {
2164                 writer_print_integers(w, "displaymatrix", sd->data, 9, " %11d", 3, 4, 1);
2165                 print_int("rotation", av_display_rotation_get((int32_t *)sd->data));
2166             } else if (sd->type == AV_FRAME_DATA_GOP_TIMECODE && sd->size >= 8) {
2167                 char tcbuf[AV_TIMECODE_STR_SIZE];
2168                 av_timecode_make_mpeg_tc_string(tcbuf, *(int64_t *)(sd->data));
2169                 print_str("timecode", tcbuf);
2170             } else if (sd->type == AV_FRAME_DATA_MASTERING_DISPLAY_METADATA) {
2171                 AVMasteringDisplayMetadata *metadata = (AVMasteringDisplayMetadata *)sd->data;
2172
2173                 if (metadata->has_primaries) {
2174                     print_q("red_x", metadata->display_primaries[0][0], '/');
2175                     print_q("red_y", metadata->display_primaries[0][1], '/');
2176                     print_q("green_x", metadata->display_primaries[1][0], '/');
2177                     print_q("green_y", metadata->display_primaries[1][1], '/');
2178                     print_q("blue_x", metadata->display_primaries[2][0], '/');
2179                     print_q("blue_y", metadata->display_primaries[2][1], '/');
2180
2181                     print_q("white_point_x", metadata->white_point[0], '/');
2182                     print_q("white_point_y", metadata->white_point[1], '/');
2183                 }
2184
2185                 if (metadata->has_luminance) {
2186                     print_q("min_luminance", metadata->min_luminance, '/');
2187                     print_q("max_luminance", metadata->max_luminance, '/');
2188                 }
2189             } else if (sd->type == AV_FRAME_DATA_CONTENT_LIGHT_LEVEL) {
2190                 AVContentLightMetadata *metadata = (AVContentLightMetadata *)sd->data;
2191                 print_int("max_content", metadata->MaxCLL);
2192                 print_int("max_average", metadata->MaxFALL);
2193             } else if (sd->type == AV_FRAME_DATA_ICC_PROFILE) {
2194                 AVDictionaryEntry *tag = av_dict_get(sd->metadata, "name", NULL, AV_DICT_MATCH_CASE);
2195                 if (tag)
2196                     print_str(tag->key, tag->value);
2197                 print_int("size", sd->size);
2198             }
2199             writer_print_section_footer(w);
2200         }
2201         writer_print_section_footer(w);
2202     }
2203
2204     writer_print_section_footer(w);
2205
2206     av_bprint_finalize(&pbuf, NULL);
2207     fflush(stdout);
2208 }
2209
2210 static av_always_inline int process_frame(WriterContext *w,
2211                                           InputFile *ifile,
2212                                           AVFrame *frame, AVPacket *pkt,
2213                                           int *packet_new)
2214 {
2215     AVFormatContext *fmt_ctx = ifile->fmt_ctx;
2216     AVCodecContext *dec_ctx = ifile->streams[pkt->stream_index].dec_ctx;
2217     AVCodecParameters *par = ifile->streams[pkt->stream_index].st->codecpar;
2218     AVSubtitle sub;
2219     int ret = 0, got_frame = 0;
2220
2221     clear_log(1);
2222     if (dec_ctx && dec_ctx->codec) {
2223         switch (par->codec_type) {
2224         case AVMEDIA_TYPE_VIDEO:
2225         case AVMEDIA_TYPE_AUDIO:
2226             if (*packet_new) {
2227                 ret = avcodec_send_packet(dec_ctx, pkt);
2228                 if (ret == AVERROR(EAGAIN)) {
2229                     ret = 0;
2230                 } else if (ret >= 0 || ret == AVERROR_EOF) {
2231                     ret = 0;
2232                     *packet_new = 0;
2233                 }
2234             }
2235             if (ret >= 0) {
2236                 ret = avcodec_receive_frame(dec_ctx, frame);
2237                 if (ret >= 0) {
2238                     got_frame = 1;
2239                 } else if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
2240                     ret = 0;
2241                 }
2242             }
2243             break;
2244
2245         case AVMEDIA_TYPE_SUBTITLE:
2246             ret = avcodec_decode_subtitle2(dec_ctx, &sub, &got_frame, pkt);
2247             *packet_new = 0;
2248             break;
2249         default:
2250             *packet_new = 0;
2251         }
2252     } else {
2253         *packet_new = 0;
2254     }
2255
2256     if (ret < 0)
2257         return ret;
2258     if (got_frame) {
2259         int is_sub = (par->codec_type == AVMEDIA_TYPE_SUBTITLE);
2260         nb_streams_frames[pkt->stream_index]++;
2261         if (do_show_frames)
2262             if (is_sub)
2263                 show_subtitle(w, &sub, ifile->streams[pkt->stream_index].st, fmt_ctx);
2264             else
2265                 show_frame(w, frame, ifile->streams[pkt->stream_index].st, fmt_ctx);
2266         if (is_sub)
2267             avsubtitle_free(&sub);
2268     }
2269     return got_frame || *packet_new;
2270 }
2271
2272 static void log_read_interval(const ReadInterval *interval, void *log_ctx, int log_level)
2273 {
2274     av_log(log_ctx, log_level, "id:%d", interval->id);
2275
2276     if (interval->has_start) {
2277         av_log(log_ctx, log_level, " start:%s%s", interval->start_is_offset ? "+" : "",
2278                av_ts2timestr(interval->start, &AV_TIME_BASE_Q));
2279     } else {
2280         av_log(log_ctx, log_level, " start:N/A");
2281     }
2282
2283     if (interval->has_end) {
2284         av_log(log_ctx, log_level, " end:%s", interval->end_is_offset ? "+" : "");
2285         if (interval->duration_frames)
2286             av_log(log_ctx, log_level, "#%"PRId64, interval->end);
2287         else
2288             av_log(log_ctx, log_level, "%s", av_ts2timestr(interval->end, &AV_TIME_BASE_Q));
2289     } else {
2290         av_log(log_ctx, log_level, " end:N/A");
2291     }
2292
2293     av_log(log_ctx, log_level, "\n");
2294 }
2295
2296 static int read_interval_packets(WriterContext *w, InputFile *ifile,
2297                                  const ReadInterval *interval, int64_t *cur_ts)
2298 {
2299     AVFormatContext *fmt_ctx = ifile->fmt_ctx;
2300     AVPacket pkt;
2301     AVFrame *frame = NULL;
2302     int ret = 0, i = 0, frame_count = 0;
2303     int64_t start = -INT64_MAX, end = interval->end;
2304     int has_start = 0, has_end = interval->has_end && !interval->end_is_offset;
2305
2306     av_init_packet(&pkt);
2307
2308     av_log(NULL, AV_LOG_VERBOSE, "Processing read interval ");
2309     log_read_interval(interval, NULL, AV_LOG_VERBOSE);
2310
2311     if (interval->has_start) {
2312         int64_t target;
2313         if (interval->start_is_offset) {
2314             if (*cur_ts == AV_NOPTS_VALUE) {
2315                 av_log(NULL, AV_LOG_ERROR,
2316                        "Could not seek to relative position since current "
2317                        "timestamp is not defined\n");
2318                 ret = AVERROR(EINVAL);
2319                 goto end;
2320             }
2321             target = *cur_ts + interval->start;
2322         } else {
2323             target = interval->start;
2324         }
2325
2326         av_log(NULL, AV_LOG_VERBOSE, "Seeking to read interval start point %s\n",
2327                av_ts2timestr(target, &AV_TIME_BASE_Q));
2328         if ((ret = avformat_seek_file(fmt_ctx, -1, -INT64_MAX, target, INT64_MAX, 0)) < 0) {
2329             av_log(NULL, AV_LOG_ERROR, "Could not seek to position %"PRId64": %s\n",
2330                    interval->start, av_err2str(ret));
2331             goto end;
2332         }
2333     }
2334
2335     frame = av_frame_alloc();
2336     if (!frame) {
2337         ret = AVERROR(ENOMEM);
2338         goto end;
2339     }
2340     while (!av_read_frame(fmt_ctx, &pkt)) {
2341         if (ifile->nb_streams > nb_streams) {
2342             REALLOCZ_ARRAY_STREAM(nb_streams_frames,  nb_streams, fmt_ctx->nb_streams);
2343             REALLOCZ_ARRAY_STREAM(nb_streams_packets, nb_streams, fmt_ctx->nb_streams);
2344             REALLOCZ_ARRAY_STREAM(selected_streams,   nb_streams, fmt_ctx->nb_streams);
2345             nb_streams = ifile->nb_streams;
2346         }
2347         if (selected_streams[pkt.stream_index]) {
2348             AVRational tb = ifile->streams[pkt.stream_index].st->time_base;
2349
2350             if (pkt.pts != AV_NOPTS_VALUE)
2351                 *cur_ts = av_rescale_q(pkt.pts, tb, AV_TIME_BASE_Q);
2352
2353             if (!has_start && *cur_ts != AV_NOPTS_VALUE) {
2354                 start = *cur_ts;
2355                 has_start = 1;
2356             }
2357
2358             if (has_start && !has_end && interval->end_is_offset) {
2359                 end = start + interval->end;
2360                 has_end = 1;
2361             }
2362
2363             if (interval->end_is_offset && interval->duration_frames) {
2364                 if (frame_count >= interval->end)
2365                     break;
2366             } else if (has_end && *cur_ts != AV_NOPTS_VALUE && *cur_ts >= end) {
2367                 break;
2368             }
2369
2370             frame_count++;
2371             if (do_read_packets) {
2372                 if (do_show_packets)
2373                     show_packet(w, ifile, &pkt, i++);
2374                 nb_streams_packets[pkt.stream_index]++;
2375             }
2376             if (do_read_frames) {
2377                 int packet_new = 1;
2378                 while (process_frame(w, ifile, frame, &pkt, &packet_new) > 0);
2379             }
2380         }
2381         av_packet_unref(&pkt);
2382     }
2383     av_init_packet(&pkt);
2384     pkt.data = NULL;
2385     pkt.size = 0;
2386     //Flush remaining frames that are cached in the decoder
2387     for (i = 0; i < fmt_ctx->nb_streams; i++) {
2388         pkt.stream_index = i;
2389         if (do_read_frames)
2390             while (process_frame(w, ifile, frame, &pkt, &(int){1}) > 0);
2391     }
2392
2393 end:
2394     av_frame_free(&frame);
2395     if (ret < 0) {
2396         av_log(NULL, AV_LOG_ERROR, "Could not read packets in interval ");
2397         log_read_interval(interval, NULL, AV_LOG_ERROR);
2398     }
2399     return ret;
2400 }
2401
2402 static int read_packets(WriterContext *w, InputFile *ifile)
2403 {
2404     AVFormatContext *fmt_ctx = ifile->fmt_ctx;
2405     int i, ret = 0;
2406     int64_t cur_ts = fmt_ctx->start_time;
2407
2408     if (read_intervals_nb == 0) {
2409         ReadInterval interval = (ReadInterval) { .has_start = 0, .has_end = 0 };
2410         ret = read_interval_packets(w, ifile, &interval, &cur_ts);
2411     } else {
2412         for (i = 0; i < read_intervals_nb; i++) {
2413             ret = read_interval_packets(w, ifile, &read_intervals[i], &cur_ts);
2414             if (ret < 0)
2415                 break;
2416         }
2417     }
2418
2419     return ret;
2420 }
2421
2422 static int show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_idx, InputStream *ist, int in_program)
2423 {
2424     AVStream *stream = ist->st;
2425     AVCodecParameters *par;
2426     AVCodecContext *dec_ctx;
2427     char val_str[128];
2428     const char *s;
2429     AVRational sar, dar;
2430     AVBPrint pbuf;
2431     const AVCodecDescriptor *cd;
2432     int ret = 0;
2433     const char *profile = NULL;
2434
2435     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
2436
2437     writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM : SECTION_ID_STREAM);
2438
2439     print_int("index", stream->index);
2440
2441     par     = stream->codecpar;
2442     dec_ctx = ist->dec_ctx;
2443     if (cd = avcodec_descriptor_get(par->codec_id)) {
2444         print_str("codec_name", cd->name);
2445         if (!do_bitexact) {
2446             print_str("codec_long_name",
2447                       cd->long_name ? cd->long_name : "unknown");
2448         }
2449     } else {
2450         print_str_opt("codec_name", "unknown");
2451         if (!do_bitexact) {
2452             print_str_opt("codec_long_name", "unknown");
2453         }
2454     }
2455
2456     if (!do_bitexact && (profile = avcodec_profile_name(par->codec_id, par->profile)))
2457         print_str("profile", profile);
2458     else {
2459         if (par->profile != FF_PROFILE_UNKNOWN) {
2460             char profile_num[12];
2461             snprintf(profile_num, sizeof(profile_num), "%d", par->profile);
2462             print_str("profile", profile_num);
2463         } else
2464             print_str_opt("profile", "unknown");
2465     }
2466
2467     s = av_get_media_type_string(par->codec_type);
2468     if (s) print_str    ("codec_type", s);
2469     else   print_str_opt("codec_type", "unknown");
2470 #if FF_API_LAVF_AVCTX
2471     if (dec_ctx)
2472         print_q("codec_time_base", dec_ctx->time_base, '/');
2473 #endif
2474
2475     /* print AVI/FourCC tag */
2476     print_str("codec_tag_string",    av_fourcc2str(par->codec_tag));
2477     print_fmt("codec_tag", "0x%04"PRIx32, par->codec_tag);
2478
2479     switch (par->codec_type) {
2480     case AVMEDIA_TYPE_VIDEO:
2481         print_int("width",        par->width);
2482         print_int("height",       par->height);
2483         if (dec_ctx) {
2484             print_int("coded_width",  dec_ctx->coded_width);
2485             print_int("coded_height", dec_ctx->coded_height);
2486         }
2487         print_int("has_b_frames", par->video_delay);
2488         sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, NULL);
2489         if (sar.den) {
2490             print_q("sample_aspect_ratio", sar, ':');
2491             av_reduce(&dar.num, &dar.den,
2492                       par->width  * sar.num,
2493                       par->height * sar.den,
2494                       1024*1024);
2495             print_q("display_aspect_ratio", dar, ':');
2496         } else {
2497             print_str_opt("sample_aspect_ratio", "N/A");
2498             print_str_opt("display_aspect_ratio", "N/A");
2499         }
2500         s = av_get_pix_fmt_name(par->format);
2501         if (s) print_str    ("pix_fmt", s);
2502         else   print_str_opt("pix_fmt", "unknown");
2503         print_int("level",   par->level);
2504         if (par->color_range != AVCOL_RANGE_UNSPECIFIED)
2505             print_str    ("color_range", av_color_range_name(par->color_range));
2506         else
2507             print_str_opt("color_range", "N/A");
2508
2509         if (par->color_space != AVCOL_SPC_UNSPECIFIED)
2510             print_str("color_space", av_color_space_name(par->color_space));
2511         else
2512             print_str_opt("color_space", av_color_space_name(par->color_space));
2513
2514         if (par->color_trc != AVCOL_TRC_UNSPECIFIED)
2515             print_str("color_transfer", av_color_transfer_name(par->color_trc));
2516         else
2517             print_str_opt("color_transfer", av_color_transfer_name(par->color_trc));
2518
2519         if (par->color_primaries != AVCOL_PRI_UNSPECIFIED)
2520             print_str("color_primaries", av_color_primaries_name(par->color_primaries));
2521         else
2522             print_str_opt("color_primaries", av_color_primaries_name(par->color_primaries));
2523
2524         if (par->chroma_location != AVCHROMA_LOC_UNSPECIFIED)
2525             print_str("chroma_location", av_chroma_location_name(par->chroma_location));
2526         else
2527             print_str_opt("chroma_location", av_chroma_location_name(par->chroma_location));
2528
2529         if (par->field_order == AV_FIELD_PROGRESSIVE)
2530             print_str("field_order", "progressive");
2531         else if (par->field_order == AV_FIELD_TT)
2532             print_str("field_order", "tt");
2533         else if (par->field_order == AV_FIELD_BB)
2534             print_str("field_order", "bb");
2535         else if (par->field_order == AV_FIELD_TB)
2536             print_str("field_order", "tb");
2537         else if (par->field_order == AV_FIELD_BT)
2538             print_str("field_order", "bt");
2539         else
2540             print_str_opt("field_order", "unknown");
2541
2542 #if FF_API_PRIVATE_OPT
2543         if (dec_ctx && dec_ctx->timecode_frame_start >= 0) {
2544             char tcbuf[AV_TIMECODE_STR_SIZE];
2545             av_timecode_make_mpeg_tc_string(tcbuf, dec_ctx->timecode_frame_start);
2546             print_str("timecode", tcbuf);
2547         } else {
2548             print_str_opt("timecode", "N/A");
2549         }
2550 #endif
2551         if (dec_ctx)
2552             print_int("refs", dec_ctx->refs);
2553         break;
2554
2555     case AVMEDIA_TYPE_AUDIO:
2556         s = av_get_sample_fmt_name(par->format);
2557         if (s) print_str    ("sample_fmt", s);
2558         else   print_str_opt("sample_fmt", "unknown");
2559         print_val("sample_rate",     par->sample_rate, unit_hertz_str);
2560         print_int("channels",        par->channels);
2561
2562         if (par->channel_layout) {
2563             av_bprint_clear(&pbuf);
2564             av_bprint_channel_layout(&pbuf, par->channels, par->channel_layout);
2565             print_str    ("channel_layout", pbuf.str);
2566         } else {
2567             print_str_opt("channel_layout", "unknown");
2568         }
2569
2570         print_int("bits_per_sample", av_get_bits_per_sample(par->codec_id));
2571         break;
2572
2573     case AVMEDIA_TYPE_SUBTITLE:
2574         if (par->width)
2575             print_int("width",       par->width);
2576         else
2577             print_str_opt("width",   "N/A");
2578         if (par->height)
2579             print_int("height",      par->height);
2580         else
2581             print_str_opt("height",  "N/A");
2582         break;
2583     }
2584
2585     if (dec_ctx && dec_ctx->codec && dec_ctx->codec->priv_class && show_private_data) {
2586         const AVOption *opt = NULL;
2587         while (opt = av_opt_next(dec_ctx->priv_data,opt)) {
2588             uint8_t *str;
2589             if (opt->flags) continue;
2590             if (av_opt_get(dec_ctx->priv_data, opt->name, 0, &str) >= 0) {
2591                 print_str(opt->name, str);
2592                 av_free(str);
2593             }
2594         }
2595     }
2596
2597     if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS) print_fmt    ("id", "0x%x", stream->id);
2598     else                                          print_str_opt("id", "N/A");
2599     print_q("r_frame_rate",   stream->r_frame_rate,   '/');
2600     print_q("avg_frame_rate", stream->avg_frame_rate, '/');
2601     print_q("time_base",      stream->time_base,      '/');
2602     print_ts  ("start_pts",   stream->start_time);
2603     print_time("start_time",  stream->start_time, &stream->time_base);
2604     print_ts  ("duration_ts", stream->duration);
2605     print_time("duration",    stream->duration, &stream->time_base);
2606     if (par->bit_rate > 0)     print_val    ("bit_rate", par->bit_rate, unit_bit_per_second_str);
2607     else                       print_str_opt("bit_rate", "N/A");
2608 #if FF_API_LAVF_AVCTX
2609     if (stream->codec->rc_max_rate > 0) print_val ("max_bit_rate", stream->codec->rc_max_rate, unit_bit_per_second_str);
2610     else                                print_str_opt("max_bit_rate", "N/A");
2611 #endif
2612     if (dec_ctx && dec_ctx->bits_per_raw_sample > 0) print_fmt("bits_per_raw_sample", "%d", dec_ctx->bits_per_raw_sample);
2613     else                                             print_str_opt("bits_per_raw_sample", "N/A");
2614     if (stream->nb_frames) print_fmt    ("nb_frames", "%"PRId64, stream->nb_frames);
2615     else                   print_str_opt("nb_frames", "N/A");
2616     if (nb_streams_frames[stream_idx])  print_fmt    ("nb_read_frames", "%"PRIu64, nb_streams_frames[stream_idx]);
2617     else                                print_str_opt("nb_read_frames", "N/A");
2618     if (nb_streams_packets[stream_idx]) print_fmt    ("nb_read_packets", "%"PRIu64, nb_streams_packets[stream_idx]);
2619     else                                print_str_opt("nb_read_packets", "N/A");
2620     if (do_show_data)
2621         writer_print_data(w, "extradata", par->extradata,
2622                                           par->extradata_size);
2623     writer_print_data_hash(w, "extradata_hash", par->extradata,
2624                                                 par->extradata_size);
2625
2626     /* Print disposition information */
2627 #define PRINT_DISPOSITION(flagname, name) do {                                \
2628         print_int(name, !!(stream->disposition & AV_DISPOSITION_##flagname)); \
2629     } while (0)
2630
2631     if (do_show_stream_disposition) {
2632     writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM_DISPOSITION : SECTION_ID_STREAM_DISPOSITION);
2633     PRINT_DISPOSITION(DEFAULT,          "default");
2634     PRINT_DISPOSITION(DUB,              "dub");
2635     PRINT_DISPOSITION(ORIGINAL,         "original");
2636     PRINT_DISPOSITION(COMMENT,          "comment");
2637     PRINT_DISPOSITION(LYRICS,           "lyrics");
2638     PRINT_DISPOSITION(KARAOKE,          "karaoke");
2639     PRINT_DISPOSITION(FORCED,           "forced");
2640     PRINT_DISPOSITION(HEARING_IMPAIRED, "hearing_impaired");
2641     PRINT_DISPOSITION(VISUAL_IMPAIRED,  "visual_impaired");
2642     PRINT_DISPOSITION(CLEAN_EFFECTS,    "clean_effects");
2643     PRINT_DISPOSITION(ATTACHED_PIC,     "attached_pic");
2644     PRINT_DISPOSITION(TIMED_THUMBNAILS, "timed_thumbnails");
2645     writer_print_section_footer(w);
2646     }
2647
2648     if (do_show_stream_tags)
2649         ret = show_tags(w, stream->metadata, in_program ? SECTION_ID_PROGRAM_STREAM_TAGS : SECTION_ID_STREAM_TAGS);
2650
2651     if (stream->nb_side_data) {
2652         print_pkt_side_data(w, stream->codecpar, stream->side_data, stream->nb_side_data,
2653                             SECTION_ID_STREAM_SIDE_DATA_LIST,
2654                             SECTION_ID_STREAM_SIDE_DATA);
2655     }
2656
2657     writer_print_section_footer(w);
2658     av_bprint_finalize(&pbuf, NULL);
2659     fflush(stdout);
2660
2661     return ret;
2662 }
2663
2664 static int show_streams(WriterContext *w, InputFile *ifile)
2665 {
2666     AVFormatContext *fmt_ctx = ifile->fmt_ctx;
2667     int i, ret = 0;
2668
2669     writer_print_section_header(w, SECTION_ID_STREAMS);
2670     for (i = 0; i < ifile->nb_streams; i++)
2671         if (selected_streams[i]) {
2672             ret = show_stream(w, fmt_ctx, i, &ifile->streams[i], 0);
2673             if (ret < 0)
2674                 break;
2675         }
2676     writer_print_section_footer(w);
2677
2678     return ret;
2679 }
2680
2681 static int show_program(WriterContext *w, InputFile *ifile, AVProgram *program)
2682 {
2683     AVFormatContext *fmt_ctx = ifile->fmt_ctx;
2684     int i, ret = 0;
2685
2686     writer_print_section_header(w, SECTION_ID_PROGRAM);
2687     print_int("program_id", program->id);
2688     print_int("program_num", program->program_num);
2689     print_int("nb_streams", program->nb_stream_indexes);
2690     print_int("pmt_pid", program->pmt_pid);
2691     print_int("pcr_pid", program->pcr_pid);
2692     print_ts("start_pts", program->start_time);
2693     print_time("start_time", program->start_time, &AV_TIME_BASE_Q);
2694     print_ts("end_pts", program->end_time);
2695     print_time("end_time", program->end_time, &AV_TIME_BASE_Q);
2696     if (do_show_program_tags)
2697         ret = show_tags(w, program->metadata, SECTION_ID_PROGRAM_TAGS);
2698     if (ret < 0)
2699         goto end;
2700
2701     writer_print_section_header(w, SECTION_ID_PROGRAM_STREAMS);
2702     for (i = 0; i < program->nb_stream_indexes; i++) {
2703         if (selected_streams[program->stream_index[i]]) {
2704             ret = show_stream(w, fmt_ctx, program->stream_index[i], &ifile->streams[program->stream_index[i]], 1);
2705             if (ret < 0)
2706                 break;
2707         }
2708     }
2709     writer_print_section_footer(w);
2710
2711 end:
2712     writer_print_section_footer(w);
2713     return ret;
2714 }
2715
2716 static int show_programs(WriterContext *w, InputFile *ifile)
2717 {
2718     AVFormatContext *fmt_ctx = ifile->fmt_ctx;
2719     int i, ret = 0;
2720
2721     writer_print_section_header(w, SECTION_ID_PROGRAMS);
2722     for (i = 0; i < fmt_ctx->nb_programs; i++) {
2723         AVProgram *program = fmt_ctx->programs[i];
2724         if (!program)
2725             continue;
2726         ret = show_program(w, ifile, program);
2727         if (ret < 0)
2728             break;
2729     }
2730     writer_print_section_footer(w);
2731     return ret;
2732 }
2733
2734 static int show_chapters(WriterContext *w, InputFile *ifile)
2735 {
2736     AVFormatContext *fmt_ctx = ifile->fmt_ctx;
2737     int i, ret = 0;
2738
2739     writer_print_section_header(w, SECTION_ID_CHAPTERS);
2740     for (i = 0; i < fmt_ctx->nb_chapters; i++) {
2741         AVChapter *chapter = fmt_ctx->chapters[i];
2742
2743         writer_print_section_header(w, SECTION_ID_CHAPTER);
2744         print_int("id", chapter->id);
2745         print_q  ("time_base", chapter->time_base, '/');
2746         print_int("start", chapter->start);
2747         print_time("start_time", chapter->start, &chapter->time_base);
2748         print_int("end", chapter->end);
2749         print_time("end_time", chapter->end, &chapter->time_base);
2750         if (do_show_chapter_tags)
2751             ret = show_tags(w, chapter->metadata, SECTION_ID_CHAPTER_TAGS);
2752         writer_print_section_footer(w);
2753     }
2754     writer_print_section_footer(w);
2755
2756     return ret;
2757 }
2758
2759 static int show_format(WriterContext *w, InputFile *ifile)
2760 {
2761     AVFormatContext *fmt_ctx = ifile->fmt_ctx;
2762     char val_str[128];
2763     int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;
2764     int ret = 0;
2765
2766     writer_print_section_header(w, SECTION_ID_FORMAT);
2767     print_str_validate("filename", fmt_ctx->filename);
2768     print_int("nb_streams",       fmt_ctx->nb_streams);
2769     print_int("nb_programs",      fmt_ctx->nb_programs);
2770     print_str("format_name",      fmt_ctx->iformat->name);
2771     if (!do_bitexact) {
2772         if (fmt_ctx->iformat->long_name) print_str    ("format_long_name", fmt_ctx->iformat->long_name);
2773         else                             print_str_opt("format_long_name", "unknown");
2774     }
2775     print_time("start_time",      fmt_ctx->start_time, &AV_TIME_BASE_Q);
2776     print_time("duration",        fmt_ctx->duration,   &AV_TIME_BASE_Q);
2777     if (size >= 0) print_val    ("size", size, unit_byte_str);
2778     else           print_str_opt("size", "N/A");
2779     if (fmt_ctx->bit_rate > 0) print_val    ("bit_rate", fmt_ctx->bit_rate, unit_bit_per_second_str);
2780     else                       print_str_opt("bit_rate", "N/A");
2781     print_int("probe_score", av_format_get_probe_score(fmt_ctx));
2782     if (do_show_format_tags)
2783         ret = show_tags(w, fmt_ctx->metadata, SECTION_ID_FORMAT_TAGS);
2784
2785     writer_print_section_footer(w);
2786     fflush(stdout);
2787     return ret;
2788 }
2789
2790 static void show_error(WriterContext *w, int err)
2791 {
2792     char errbuf[128];
2793     const char *errbuf_ptr = errbuf;
2794
2795     if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
2796         errbuf_ptr = strerror(AVUNERROR(err));
2797
2798     writer_print_section_header(w, SECTION_ID_ERROR);
2799     print_int("code", err);
2800     print_str("string", errbuf_ptr);
2801     writer_print_section_footer(w);
2802 }
2803
2804 static int open_input_file(InputFile *ifile, const char *filename)
2805 {
2806     int err, i;
2807     AVFormatContext *fmt_ctx = NULL;
2808     AVDictionaryEntry *t;
2809     int scan_all_pmts_set = 0;
2810
2811     fmt_ctx = avformat_alloc_context();
2812     if (!fmt_ctx) {
2813         print_error(filename, AVERROR(ENOMEM));
2814         exit_program(1);
2815     }
2816
2817     fmt_ctx->flags |= AVFMT_FLAG_KEEP_SIDE_DATA;
2818
2819     if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
2820         av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
2821         scan_all_pmts_set = 1;
2822     }
2823     if ((err = avformat_open_input(&fmt_ctx, filename,
2824                                    iformat, &format_opts)) < 0) {
2825         print_error(filename, err);
2826         return err;
2827     }
2828     ifile->fmt_ctx = fmt_ctx;
2829     if (scan_all_pmts_set)
2830         av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
2831     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2832         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2833         return AVERROR_OPTION_NOT_FOUND;
2834     }
2835
2836     if (find_stream_info) {
2837         AVDictionary **opts = setup_find_stream_info_opts(fmt_ctx, codec_opts);
2838         int orig_nb_streams = fmt_ctx->nb_streams;
2839
2840         err = avformat_find_stream_info(fmt_ctx, opts);
2841
2842         for (i = 0; i < orig_nb_streams; i++)
2843             av_dict_free(&opts[i]);
2844         av_freep(&opts);
2845
2846         if (err < 0) {
2847             print_error(filename, err);
2848             return err;
2849         }
2850     }
2851
2852     av_dump_format(fmt_ctx, 0, filename, 0);
2853
2854     ifile->streams = av_mallocz_array(fmt_ctx->nb_streams,
2855                                       sizeof(*ifile->streams));
2856     if (!ifile->streams)
2857         exit(1);
2858     ifile->nb_streams = fmt_ctx->nb_streams;
2859
2860     /* bind a decoder to each input stream */
2861     for (i = 0; i < fmt_ctx->nb_streams; i++) {
2862         InputStream *ist = &ifile->streams[i];
2863         AVStream *stream = fmt_ctx->streams[i];
2864         AVCodec *codec;
2865
2866         ist->st = stream;
2867
2868         if (stream->codecpar->codec_id == AV_CODEC_ID_PROBE) {
2869             av_log(NULL, AV_LOG_WARNING,
2870                    "Failed to probe codec for input stream %d\n",
2871                     stream->index);
2872             continue;
2873         }
2874
2875         codec = avcodec_find_decoder(stream->codecpar->codec_id);
2876         if (!codec) {
2877             av_log(NULL, AV_LOG_WARNING,
2878                     "Unsupported codec with id %d for input stream %d\n",
2879                     stream->codecpar->codec_id, stream->index);
2880             continue;
2881         }
2882         {
2883             AVDictionary *opts = filter_codec_opts(codec_opts, stream->codecpar->codec_id,
2884                                                    fmt_ctx, stream, codec);
2885
2886             ist->dec_ctx = avcodec_alloc_context3(codec);
2887             if (!ist->dec_ctx)
2888                 exit(1);
2889
2890             err = avcodec_parameters_to_context(ist->dec_ctx, stream->codecpar);
2891             if (err < 0)
2892                 exit(1);
2893
2894             if (do_show_log) {
2895                 // For loging it is needed to disable at least frame threads as otherwise
2896                 // the log information would need to be reordered and matches up to contexts and frames
2897                 // That is in fact possible but not trivial
2898                 av_dict_set(&codec_opts, "threads", "1", 0);
2899             }
2900
2901             av_codec_set_pkt_timebase(ist->dec_ctx, stream->time_base);
2902             ist->dec_ctx->framerate = stream->avg_frame_rate;
2903
2904             if (avcodec_open2(ist->dec_ctx, codec, &opts) < 0) {
2905                 av_log(NULL, AV_LOG_WARNING, "Could not open codec for input stream %d\n",
2906                        stream->index);
2907                 exit(1);
2908             }
2909
2910             if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2911                 av_log(NULL, AV_LOG_ERROR, "Option %s for input stream %d not found\n",
2912                        t->key, stream->index);
2913                 return AVERROR_OPTION_NOT_FOUND;
2914             }
2915         }
2916     }
2917
2918     ifile->fmt_ctx = fmt_ctx;
2919     return 0;
2920 }
2921
2922 static void close_input_file(InputFile *ifile)
2923 {
2924     int i;
2925
2926     /* close decoder for each stream */
2927     for (i = 0; i < ifile->nb_streams; i++)
2928         if (ifile->streams[i].st->codecpar->codec_id != AV_CODEC_ID_NONE)
2929             avcodec_free_context(&ifile->streams[i].dec_ctx);
2930
2931     av_freep(&ifile->streams);
2932     ifile->nb_streams = 0;
2933
2934     avformat_close_input(&ifile->fmt_ctx);
2935 }
2936
2937 static int probe_file(WriterContext *wctx, const char *filename)
2938 {
2939     InputFile ifile = { 0 };
2940     int ret, i;
2941     int section_id;
2942
2943     do_read_frames = do_show_frames || do_count_frames;
2944     do_read_packets = do_show_packets || do_count_packets;
2945
2946     ret = open_input_file(&ifile, filename);
2947     if (ret < 0)
2948         goto end;
2949
2950 #define CHECK_END if (ret < 0) goto end
2951
2952     nb_streams = ifile.fmt_ctx->nb_streams;
2953     REALLOCZ_ARRAY_STREAM(nb_streams_frames,0,ifile.fmt_ctx->nb_streams);
2954     REALLOCZ_ARRAY_STREAM(nb_streams_packets,0,ifile.fmt_ctx->nb_streams);
2955     REALLOCZ_ARRAY_STREAM(selected_streams,0,ifile.fmt_ctx->nb_streams);
2956
2957     for (i = 0; i < ifile.fmt_ctx->nb_streams; i++) {
2958         if (stream_specifier) {
2959             ret = avformat_match_stream_specifier(ifile.fmt_ctx,
2960                                                   ifile.fmt_ctx->streams[i],
2961                                                   stream_specifier);
2962             CHECK_END;
2963             else
2964                 selected_streams[i] = ret;
2965             ret = 0;
2966         } else {
2967             selected_streams[i] = 1;
2968         }
2969         if (!selected_streams[i])
2970             ifile.fmt_ctx->streams[i]->discard = AVDISCARD_ALL;
2971     }
2972
2973     if (do_read_frames || do_read_packets) {
2974         if (do_show_frames && do_show_packets &&
2975             wctx->writer->flags & WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER)
2976             section_id = SECTION_ID_PACKETS_AND_FRAMES;
2977         else if (do_show_packets && !do_show_frames)
2978             section_id = SECTION_ID_PACKETS;
2979         else // (!do_show_packets && do_show_frames)
2980             section_id = SECTION_ID_FRAMES;
2981         if (do_show_frames || do_show_packets)
2982             writer_print_section_header(wctx, section_id);
2983         ret = read_packets(wctx, &ifile);
2984         if (do_show_frames || do_show_packets)
2985             writer_print_section_footer(wctx);
2986         CHECK_END;
2987     }
2988
2989     if (do_show_programs) {
2990         ret = show_programs(wctx, &ifile);
2991         CHECK_END;
2992     }
2993
2994     if (do_show_streams) {
2995         ret = show_streams(wctx, &ifile);
2996         CHECK_END;
2997     }
2998     if (do_show_chapters) {
2999         ret = show_chapters(wctx, &ifile);
3000         CHECK_END;
3001     }
3002     if (do_show_format) {
3003         ret = show_format(wctx, &ifile);
3004         CHECK_END;
3005     }
3006
3007 end:
3008     if (ifile.fmt_ctx)
3009         close_input_file(&ifile);
3010     av_freep(&nb_streams_frames);
3011     av_freep(&nb_streams_packets);
3012     av_freep(&selected_streams);
3013
3014     return ret;
3015 }
3016
3017 static void show_usage(void)
3018 {
3019     av_log(NULL, AV_LOG_INFO, "Simple multimedia streams analyzer\n");
3020     av_log(NULL, AV_LOG_INFO, "usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);
3021     av_log(NULL, AV_LOG_INFO, "\n");
3022 }
3023
3024 static void ffprobe_show_program_version(WriterContext *w)
3025 {
3026     AVBPrint pbuf;
3027     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
3028
3029     writer_print_section_header(w, SECTION_ID_PROGRAM_VERSION);
3030     print_str("version", FFMPEG_VERSION);
3031     print_fmt("copyright", "Copyright (c) %d-%d the FFmpeg developers",
3032               program_birth_year, CONFIG_THIS_YEAR);
3033     print_str("compiler_ident", CC_IDENT);
3034     print_str("configuration", FFMPEG_CONFIGURATION);
3035     writer_print_section_footer(w);
3036
3037     av_bprint_finalize(&pbuf, NULL);
3038 }
3039
3040 #define SHOW_LIB_VERSION(libname, LIBNAME)                              \
3041     do {                                                                \
3042         if (CONFIG_##LIBNAME) {                                         \
3043             unsigned int version = libname##_version();                 \
3044             writer_print_section_header(w, SECTION_ID_LIBRARY_VERSION); \
3045             print_str("name",    "lib" #libname);                       \
3046             print_int("major",   LIB##LIBNAME##_VERSION_MAJOR);         \
3047             print_int("minor",   LIB##LIBNAME##_VERSION_MINOR);         \
3048             print_int("micro",   LIB##LIBNAME##_VERSION_MICRO);         \
3049             print_int("version", version);                              \
3050             print_str("ident",   LIB##LIBNAME##_IDENT);                 \
3051             writer_print_section_footer(w);                             \
3052         }                                                               \
3053     } while (0)
3054
3055 static void ffprobe_show_library_versions(WriterContext *w)
3056 {
3057     writer_print_section_header(w, SECTION_ID_LIBRARY_VERSIONS);
3058     SHOW_LIB_VERSION(avutil,     AVUTIL);
3059     SHOW_LIB_VERSION(avcodec,    AVCODEC);
3060     SHOW_LIB_VERSION(avformat,   AVFORMAT);
3061     SHOW_LIB_VERSION(avdevice,   AVDEVICE);
3062     SHOW_LIB_VERSION(avfilter,   AVFILTER);
3063     SHOW_LIB_VERSION(swscale,    SWSCALE);
3064     SHOW_LIB_VERSION(swresample, SWRESAMPLE);
3065     SHOW_LIB_VERSION(postproc,   POSTPROC);
3066     writer_print_section_footer(w);
3067 }
3068
3069 #define PRINT_PIX_FMT_FLAG(flagname, name)                                \
3070     do {                                                                  \
3071         print_int(name, !!(pixdesc->flags & AV_PIX_FMT_FLAG_##flagname)); \
3072     } while (0)
3073
3074 static void ffprobe_show_pixel_formats(WriterContext *w)
3075 {
3076     const AVPixFmtDescriptor *pixdesc = NULL;
3077     int i, n;
3078
3079     writer_print_section_header(w, SECTION_ID_PIXEL_FORMATS);
3080     while (pixdesc = av_pix_fmt_desc_next(pixdesc)) {
3081         writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT);
3082         print_str("name", pixdesc->name);
3083         print_int("nb_components", pixdesc->nb_components);
3084         if ((pixdesc->nb_components >= 3) && !(pixdesc->flags & AV_PIX_FMT_FLAG_RGB)) {
3085             print_int    ("log2_chroma_w", pixdesc->log2_chroma_w);
3086             print_int    ("log2_chroma_h", pixdesc->log2_chroma_h);
3087         } else {
3088             print_str_opt("log2_chroma_w", "N/A");
3089             print_str_opt("log2_chroma_h", "N/A");
3090         }
3091         n = av_get_bits_per_pixel(pixdesc);
3092         if (n) print_int    ("bits_per_pixel", n);
3093         else   print_str_opt("bits_per_pixel", "N/A");
3094         if (do_show_pixel_format_flags) {
3095             writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_FLAGS);
3096             PRINT_PIX_FMT_FLAG(BE,        "big_endian");
3097             PRINT_PIX_FMT_FLAG(PAL,       "palette");
3098             PRINT_PIX_FMT_FLAG(BITSTREAM, "bitstream");
3099             PRINT_PIX_FMT_FLAG(HWACCEL,   "hwaccel");
3100             PRINT_PIX_FMT_FLAG(PLANAR,    "planar");
3101             PRINT_PIX_FMT_FLAG(RGB,       "rgb");
3102             PRINT_PIX_FMT_FLAG(PSEUDOPAL, "pseudopal");
3103             PRINT_PIX_FMT_FLAG(ALPHA,     "alpha");
3104             writer_print_section_footer(w);
3105         }
3106         if (do_show_pixel_format_components && (pixdesc->nb_components > 0)) {
3107             writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_COMPONENTS);
3108             for (i = 0; i < pixdesc->nb_components; i++) {
3109                 writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_COMPONENT);
3110                 print_int("index", i + 1);
3111                 print_int("bit_depth", pixdesc->comp[i].depth);
3112                 writer_print_section_footer(w);
3113             }
3114             writer_print_section_footer(w);
3115         }
3116         writer_print_section_footer(w);
3117     }
3118     writer_print_section_footer(w);
3119 }
3120
3121 static int opt_format(void *optctx, const char *opt, const char *arg)
3122 {
3123     iformat = av_find_input_format(arg);
3124     if (!iformat) {
3125         av_log(NULL, AV_LOG_ERROR, "Unknown input format: %s\n", arg);
3126         return AVERROR(EINVAL);
3127     }
3128     return 0;
3129 }
3130
3131 static inline void mark_section_show_entries(SectionID section_id,
3132                                              int show_all_entries, AVDictionary *entries)
3133 {
3134     struct section *section = &sections[section_id];
3135
3136     section->show_all_entries = show_all_entries;
3137     if (show_all_entries) {
3138         SectionID *id;
3139         for (id = section->children_ids; *id != -1; id++)
3140             mark_section_show_entries(*id, show_all_entries, entries);
3141     } else {
3142         av_dict_copy(&section->entries_to_show, entries, 0);
3143     }
3144 }
3145
3146 static int match_section(const char *section_name,
3147                          int show_all_entries, AVDictionary *entries)
3148 {
3149     int i, ret = 0;
3150
3151     for (i = 0; i < FF_ARRAY_ELEMS(sections); i++) {
3152         const struct section *section = &sections[i];
3153         if (!strcmp(section_name, section->name) ||
3154             (section->unique_name && !strcmp(section_name, section->unique_name))) {
3155             av_log(NULL, AV_LOG_DEBUG,
3156                    "'%s' matches section with unique name '%s'\n", section_name,
3157                    (char *)av_x_if_null(section->unique_name, section->name));
3158             ret++;
3159             mark_section_show_entries(section->id, show_all_entries, entries);
3160         }
3161     }
3162     return ret;
3163 }
3164
3165 static int opt_show_entries(void *optctx, const char *opt, const char *arg)
3166 {
3167     const char *p = arg;
3168     int ret = 0;
3169
3170     while (*p) {
3171         AVDictionary *entries = NULL;
3172         char *section_name = av_get_token(&p, "=:");
3173         int show_all_entries = 0;
3174
3175         if (!section_name) {
3176             av_log(NULL, AV_LOG_ERROR,
3177                    "Missing section name for option '%s'\n", opt);
3178             return AVERROR(EINVAL);
3179         }
3180
3181         if (*p == '=') {
3182             p++;
3183             while (*p && *p != ':') {
3184                 char *entry = av_get_token(&p, ",:");
3185                 if (!entry)
3186                     break;
3187                 av_log(NULL, AV_LOG_VERBOSE,
3188                        "Adding '%s' to the entries to show in section '%s'\n",
3189                        entry, section_name);
3190                 av_dict_set(&entries, entry, "", AV_DICT_DONT_STRDUP_KEY);
3191                 if (*p == ',')
3192                     p++;
3193             }
3194         } else {
3195             show_all_entries = 1;
3196         }
3197
3198         ret = match_section(section_name, show_all_entries, entries);
3199         if (ret == 0) {
3200             av_log(NULL, AV_LOG_ERROR, "No match for section '%s'\n", section_name);
3201             ret = AVERROR(EINVAL);
3202         }
3203         av_dict_free(&entries);
3204         av_free(section_name);
3205
3206         if (ret <= 0)
3207             break;
3208         if (*p)
3209             p++;
3210     }
3211
3212     return ret;
3213 }
3214
3215 static int opt_show_format_entry(void *optctx, const char *opt, const char *arg)
3216 {
3217     char *buf = av_asprintf("format=%s", arg);
3218     int ret;
3219
3220     if (!buf)
3221         return AVERROR(ENOMEM);
3222
3223     av_log(NULL, AV_LOG_WARNING,
3224            "Option '%s' is deprecated, use '-show_entries format=%s' instead\n",
3225            opt, arg);
3226     ret = opt_show_entries(optctx, opt, buf);
3227     av_free(buf);
3228     return ret;
3229 }
3230
3231 static void opt_input_file(void *optctx, const char *arg)
3232 {
3233     if (input_filename) {
3234         av_log(NULL, AV_LOG_ERROR,
3235                 "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3236                 arg, input_filename);
3237         exit_program(1);
3238     }
3239     if (!strcmp(arg, "-"))
3240         arg = "pipe:";
3241     input_filename = arg;
3242 }
3243
3244 static int opt_input_file_i(void *optctx, const char *opt, const char *arg)
3245 {
3246     opt_input_file(optctx, arg);
3247     return 0;
3248 }
3249
3250 void show_help_default(const char *opt, const char *arg)
3251 {
3252     av_log_set_callback(log_callback_help);
3253     show_usage();
3254     show_help_options(options, "Main options:", 0, 0, 0);
3255     printf("\n");
3256
3257     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3258     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3259 }
3260
3261 /**
3262  * Parse interval specification, according to the format:
3263  * INTERVAL ::= [START|+START_OFFSET][%[END|+END_OFFSET]]
3264  * INTERVALS ::= INTERVAL[,INTERVALS]
3265 */
3266 static int parse_read_interval(const char *interval_spec,
3267                                ReadInterval *interval)
3268 {
3269     int ret = 0;
3270     char *next, *p, *spec = av_strdup(interval_spec);
3271     if (!spec)
3272         return AVERROR(ENOMEM);
3273
3274     if (!*spec) {
3275         av_log(NULL, AV_LOG_ERROR, "Invalid empty interval specification\n");
3276         ret = AVERROR(EINVAL);
3277         goto end;
3278     }
3279
3280     p = spec;
3281     next = strchr(spec, '%');
3282     if (next)
3283         *next++ = 0;
3284
3285     /* parse first part */
3286     if (*p) {
3287         interval->has_start = 1;
3288
3289         if (*p == '+') {
3290             interval->start_is_offset = 1;
3291             p++;
3292         } else {
3293             interval->start_is_offset = 0;
3294         }
3295
3296         ret = av_parse_time(&interval->start, p, 1);
3297         if (ret < 0) {
3298             av_log(NULL, AV_LOG_ERROR, "Invalid interval start specification '%s'\n", p);
3299             goto end;
3300         }
3301     } else {
3302         interval->has_start = 0;
3303     }
3304
3305     /* parse second part */
3306     p = next;
3307     if (p && *p) {
3308         int64_t us;
3309         interval->has_end = 1;
3310
3311         if (*p == '+') {
3312             interval->end_is_offset = 1;
3313             p++;
3314         } else {
3315             interval->end_is_offset = 0;
3316         }
3317
3318         if (interval->end_is_offset && *p == '#') {
3319             long long int lli;
3320             char *tail;
3321             interval->duration_frames = 1;
3322             p++;
3323             lli = strtoll(p, &tail, 10);
3324             if (*tail || lli < 0) {
3325                 av_log(NULL, AV_LOG_ERROR,
3326                        "Invalid or negative value '%s' for duration number of frames\n", p);
3327                 goto end;
3328             }
3329             interval->end = lli;
3330         } else {
3331             ret = av_parse_time(&us, p, 1);
3332             if (ret < 0) {
3333                 av_log(NULL, AV_LOG_ERROR, "Invalid interval end/duration specification '%s'\n", p);
3334                 goto end;
3335             }
3336             interval->end = us;
3337         }
3338     } else {
3339         interval->has_end = 0;
3340     }
3341
3342 end:
3343     av_free(spec);
3344     return ret;
3345 }
3346
3347 static int parse_read_intervals(const char *intervals_spec)
3348 {
3349     int ret, n, i;
3350     char *p, *spec = av_strdup(intervals_spec);
3351     if (!spec)
3352         return AVERROR(ENOMEM);
3353
3354     /* preparse specification, get number of intervals */
3355     for (n = 0, p = spec; *p; p++)
3356         if (*p == ',')
3357             n++;
3358     n++;
3359
3360     read_intervals = av_malloc_array(n, sizeof(*read_intervals));
3361     if (!read_intervals) {
3362         ret = AVERROR(ENOMEM);
3363         goto end;
3364     }
3365     read_intervals_nb = n;
3366
3367     /* parse intervals */
3368     p = spec;
3369     for (i = 0; p; i++) {
3370         char *next;
3371
3372         av_assert0(i < read_intervals_nb);
3373         next = strchr(p, ',');
3374         if (next)
3375             *next++ = 0;
3376
3377         read_intervals[i].id = i;
3378         ret = parse_read_interval(p, &read_intervals[i]);
3379         if (ret < 0) {
3380             av_log(NULL, AV_LOG_ERROR, "Error parsing read interval #%d '%s'\n",
3381                    i, p);
3382             goto end;
3383         }
3384         av_log(NULL, AV_LOG_VERBOSE, "Parsed log interval ");
3385         log_read_interval(&read_intervals[i], NULL, AV_LOG_VERBOSE);
3386         p = next;
3387     }
3388     av_assert0(i == read_intervals_nb);
3389
3390 end:
3391     av_free(spec);
3392     return ret;
3393 }
3394
3395 static int opt_read_intervals(void *optctx, const char *opt, const char *arg)
3396 {
3397     return parse_read_intervals(arg);
3398 }
3399
3400 static int opt_pretty(void *optctx, const char *opt, const char *arg)
3401 {
3402     show_value_unit              = 1;
3403     use_value_prefix             = 1;
3404     use_byte_value_binary_prefix = 1;
3405     use_value_sexagesimal_format = 1;
3406     return 0;
3407 }
3408
3409 static void print_section(SectionID id, int level)
3410 {
3411     const SectionID *pid;
3412     const struct section *section = &sections[id];
3413     printf("%c%c%c",
3414            section->flags & SECTION_FLAG_IS_WRAPPER           ? 'W' : '.',
3415            section->flags & SECTION_FLAG_IS_ARRAY             ? 'A' : '.',
3416            section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS  ? 'V' : '.');
3417     printf("%*c  %s", level * 4, ' ', section->name);
3418     if (section->unique_name)
3419         printf("/%s", section->unique_name);
3420     printf("\n");
3421
3422     for (pid = section->children_ids; *pid != -1; pid++)
3423         print_section(*pid, level+1);
3424 }
3425
3426 static int opt_sections(void *optctx, const char *opt, const char *arg)
3427 {
3428     printf("Sections:\n"
3429            "W.. = Section is a wrapper (contains other sections, no local entries)\n"
3430            ".A. = Section contains an array of elements of the same type\n"
3431            "..V = Section may contain a variable number of fields with variable keys\n"
3432            "FLAGS NAME/UNIQUE_NAME\n"
3433            "---\n");
3434     print_section(SECTION_ID_ROOT, 0);
3435     return 0;
3436 }
3437
3438 static int opt_show_versions(const char *opt, const char *arg)
3439 {
3440     mark_section_show_entries(SECTION_ID_PROGRAM_VERSION, 1, NULL);
3441     mark_section_show_entries(SECTION_ID_LIBRARY_VERSION, 1, NULL);
3442     return 0;
3443 }
3444
3445 #define DEFINE_OPT_SHOW_SECTION(section, target_section_id)             \
3446     static int opt_show_##section(const char *opt, const char *arg)     \
3447     {                                                                   \
3448         mark_section_show_entries(SECTION_ID_##target_section_id, 1, NULL); \
3449         return 0;                                                       \
3450     }
3451
3452 DEFINE_OPT_SHOW_SECTION(chapters,         CHAPTERS)
3453 DEFINE_OPT_SHOW_SECTION(error,            ERROR)
3454 DEFINE_OPT_SHOW_SECTION(format,           FORMAT)
3455 DEFINE_OPT_SHOW_SECTION(frames,           FRAMES)
3456 DEFINE_OPT_SHOW_SECTION(library_versions, LIBRARY_VERSIONS)
3457 DEFINE_OPT_SHOW_SECTION(packets,          PACKETS)
3458 DEFINE_OPT_SHOW_SECTION(pixel_formats,    PIXEL_FORMATS)
3459 DEFINE_OPT_SHOW_SECTION(program_version,  PROGRAM_VERSION)
3460 DEFINE_OPT_SHOW_SECTION(streams,          STREAMS)
3461 DEFINE_OPT_SHOW_SECTION(programs,         PROGRAMS)
3462
3463 static const OptionDef real_options[] = {
3464     CMDUTILS_COMMON_OPTIONS
3465     { "f", HAS_ARG, {.func_arg = opt_format}, "force format", "format" },
3466     { "unit", OPT_BOOL, {&show_value_unit}, "show unit of the displayed values" },
3467     { "prefix", OPT_BOOL, {&use_value_prefix}, "use SI prefixes for the displayed values" },
3468     { "byte_binary_prefix", OPT_BOOL, {&use_byte_value_binary_prefix},
3469       "use binary prefixes for byte units" },
3470     { "sexagesimal", OPT_BOOL,  {&use_value_sexagesimal_format},
3471       "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
3472     { "pretty", 0, {.func_arg = opt_pretty},
3473       "prettify the format of displayed values, make it more human readable" },
3474     { "print_format", OPT_STRING | HAS_ARG, {(void*)&print_format},
3475       "set the output printing format (available formats are: default, compact, csv, flat, ini, json, xml)", "format" },
3476     { "of", OPT_STRING | HAS_ARG, {(void*)&print_format}, "alias for -print_format", "format" },
3477     { "select_streams", OPT_STRING | HAS_ARG, {(void*)&stream_specifier}, "select the specified streams", "stream_specifier" },
3478     { "sections", OPT_EXIT, {.func_arg = opt_sections}, "print sections structure and section information, and exit" },
3479     { "show_data",    OPT_BOOL, {(void*)&do_show_data}, "show packets data" },
3480     { "show_data_hash", OPT_STRING | HAS_ARG, {(void*)&show_data_hash}, "show packets data hash" },
3481     { "show_error",   0, {(void*)&opt_show_error},  "show probing error" },
3482     { "show_format",  0, {(void*)&opt_show_format}, "show format/container info" },
3483     { "show_frames",  0, {(void*)&opt_show_frames}, "show frames info" },
3484     { "show_format_entry", HAS_ARG, {.func_arg = opt_show_format_entry},
3485       "show a particular entry from the format/container info", "entry" },
3486     { "show_entries", HAS_ARG, {.func_arg = opt_show_entries},
3487       "show a set of specified entries", "entry_list" },
3488 #if HAVE_THREADS
3489     { "show_log", OPT_INT|HAS_ARG, {(void*)&do_show_log}, "show log" },
3490 #endif
3491     { "show_packets", 0, {(void*)&opt_show_packets}, "show packets info" },
3492     { "show_programs", 0, {(void*)&opt_show_programs}, "show programs info" },
3493     { "show_streams", 0, {(void*)&opt_show_streams}, "show streams info" },
3494     { "show_chapters", 0, {(void*)&opt_show_chapters}, "show chapters info" },
3495     { "count_frames", OPT_BOOL, {(void*)&do_count_frames}, "count the number of frames per stream" },
3496     { "count_packets", OPT_BOOL, {(void*)&do_count_packets}, "count the number of packets per stream" },
3497     { "show_program_version",  0, {(void*)&opt_show_program_version},  "show ffprobe version" },
3498     { "show_library_versions", 0, {(void*)&opt_show_library_versions}, "show library versions" },
3499     { "show_versions",         0, {(void*)&opt_show_versions}, "show program and library versions" },
3500     { "show_pixel_formats", 0, {(void*)&opt_show_pixel_formats}, "show pixel format descriptions" },
3501     { "show_private_data", OPT_BOOL, {(void*)&show_private_data}, "show private data" },
3502     { "private",           OPT_BOOL, {(void*)&show_private_data}, "same as show_private_data" },
3503     { "bitexact", OPT_BOOL, {&do_bitexact}, "force bitexact output" },
3504     { "read_intervals", HAS_ARG, {.func_arg = opt_read_intervals}, "set read intervals", "read_intervals" },
3505     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {.func_arg = opt_default}, "generic catch all option", "" },
3506     { "i", HAS_ARG, {.func_arg = opt_input_file_i}, "read specified file", "input_file"},
3507     { "find_stream_info", OPT_BOOL | OPT_INPUT | OPT_EXPERT, { &find_stream_info },
3508         "read and decode the streams to fill missing information with heuristics" },
3509     { NULL, },
3510 };
3511
3512 static inline int check_section_show_entries(int section_id)
3513 {
3514     int *id;
3515     struct section *section = &sections[section_id];
3516     if (sections[section_id].show_all_entries || sections[section_id].entries_to_show)
3517         return 1;
3518     for (id = section->children_ids; *id != -1; id++)
3519         if (check_section_show_entries(*id))
3520             return 1;
3521     return 0;
3522 }
3523
3524 #define SET_DO_SHOW(id, varname) do {                                   \
3525         if (check_section_show_entries(SECTION_ID_##id))                \
3526             do_show_##varname = 1;                                      \
3527     } while (0)
3528
3529 int main(int argc, char **argv)
3530 {
3531     const Writer *w;
3532     WriterContext *wctx;
3533     char *buf;
3534     char *w_name = NULL, *w_args = NULL;
3535     int ret, i;
3536
3537     init_dynload();
3538
3539 #if HAVE_THREADS
3540     ret = pthread_mutex_init(&log_mutex, NULL);
3541     if (ret != 0) {
3542         goto end;
3543     }
3544 #endif
3545     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3546     register_exit(ffprobe_cleanup);
3547
3548     options = real_options;
3549     parse_loglevel(argc, argv, options);
3550     av_register_all();
3551     avformat_network_init();
3552     init_opts();
3553 #if CONFIG_AVDEVICE
3554     avdevice_register_all();
3555 #endif
3556
3557     show_banner(argc, argv, options);
3558     parse_options(NULL, argc, argv, options, opt_input_file);
3559
3560     if (do_show_log)
3561         av_log_set_callback(log_callback);
3562
3563     /* mark things to show, based on -show_entries */
3564     SET_DO_SHOW(CHAPTERS, chapters);
3565     SET_DO_SHOW(ERROR, error);
3566     SET_DO_SHOW(FORMAT, format);
3567     SET_DO_SHOW(FRAMES, frames);
3568     SET_DO_SHOW(LIBRARY_VERSIONS, library_versions);
3569     SET_DO_SHOW(PACKETS, packets);
3570     SET_DO_SHOW(PIXEL_FORMATS, pixel_formats);
3571     SET_DO_SHOW(PIXEL_FORMAT_FLAGS, pixel_format_flags);
3572     SET_DO_SHOW(PIXEL_FORMAT_COMPONENTS, pixel_format_components);
3573     SET_DO_SHOW(PROGRAM_VERSION, program_version);
3574     SET_DO_SHOW(PROGRAMS, programs);
3575     SET_DO_SHOW(STREAMS, streams);
3576     SET_DO_SHOW(STREAM_DISPOSITION, stream_disposition);
3577     SET_DO_SHOW(PROGRAM_STREAM_DISPOSITION, stream_disposition);
3578
3579     SET_DO_SHOW(CHAPTER_TAGS, chapter_tags);
3580     SET_DO_SHOW(FORMAT_TAGS, format_tags);
3581     SET_DO_SHOW(FRAME_TAGS, frame_tags);
3582     SET_DO_SHOW(PROGRAM_TAGS, program_tags);
3583     SET_DO_SHOW(STREAM_TAGS, stream_tags);
3584     SET_DO_SHOW(PROGRAM_STREAM_TAGS, stream_tags);
3585     SET_DO_SHOW(PACKET_TAGS, packet_tags);
3586
3587     if (do_bitexact && (do_show_program_version || do_show_library_versions)) {
3588         av_log(NULL, AV_LOG_ERROR,
3589                "-bitexact and -show_program_version or -show_library_versions "
3590                "options are incompatible\n");
3591         ret = AVERROR(EINVAL);
3592         goto end;
3593     }
3594
3595     writer_register_all();
3596
3597     if (!print_format)
3598         print_format = av_strdup("default");
3599     if (!print_format) {
3600         ret = AVERROR(ENOMEM);
3601         goto end;
3602     }
3603     w_name = av_strtok(print_format, "=", &buf);
3604     if (!w_name) {
3605         av_log(NULL, AV_LOG_ERROR,
3606                "No name specified for the output format\n");
3607         ret = AVERROR(EINVAL);
3608         goto end;
3609     }
3610     w_args = buf;
3611
3612     if (show_data_hash) {
3613         if ((ret = av_hash_alloc(&hash, show_data_hash)) < 0) {
3614             if (ret == AVERROR(EINVAL)) {
3615                 const char *n;
3616                 av_log(NULL, AV_LOG_ERROR,
3617                        "Unknown hash algorithm '%s'\nKnown algorithms:",
3618                        show_data_hash);
3619                 for (i = 0; (n = av_hash_names(i)); i++)
3620                     av_log(NULL, AV_LOG_ERROR, " %s", n);
3621                 av_log(NULL, AV_LOG_ERROR, "\n");
3622             }
3623             goto end;
3624         }
3625     }
3626
3627     w = writer_get_by_name(w_name);
3628     if (!w) {
3629         av_log(NULL, AV_LOG_ERROR, "Unknown output format with name '%s'\n", w_name);
3630         ret = AVERROR(EINVAL);
3631         goto end;
3632     }
3633
3634     if ((ret = writer_open(&wctx, w, w_args,
3635                            sections, FF_ARRAY_ELEMS(sections))) >= 0) {
3636         if (w == &xml_writer)
3637             wctx->string_validation_utf8_flags |= AV_UTF8_FLAG_EXCLUDE_XML_INVALID_CONTROL_CODES;
3638
3639         writer_print_section_header(wctx, SECTION_ID_ROOT);
3640
3641         if (do_show_program_version)
3642             ffprobe_show_program_version(wctx);
3643         if (do_show_library_versions)
3644             ffprobe_show_library_versions(wctx);
3645         if (do_show_pixel_formats)
3646             ffprobe_show_pixel_formats(wctx);
3647
3648         if (!input_filename &&
3649             ((do_show_format || do_show_programs || do_show_streams || do_show_chapters || do_show_packets || do_show_error) ||
3650              (!do_show_program_version && !do_show_library_versions && !do_show_pixel_formats))) {
3651             show_usage();
3652             av_log(NULL, AV_LOG_ERROR, "You have to specify one input file.\n");
3653             av_log(NULL, AV_LOG_ERROR, "Use -h to get full help or, even better, run 'man %s'.\n", program_name);
3654             ret = AVERROR(EINVAL);
3655         } else if (input_filename) {
3656             ret = probe_file(wctx, input_filename);
3657             if (ret < 0 && do_show_error)
3658                 show_error(wctx, ret);
3659         }
3660
3661         writer_print_section_footer(wctx);
3662         writer_close(&wctx);
3663     }
3664
3665 end:
3666     av_freep(&print_format);
3667     av_freep(&read_intervals);
3668     av_hash_freep(&hash);
3669
3670     uninit_opts();
3671     for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)
3672         av_dict_free(&(sections[i].entries_to_show));
3673
3674     avformat_network_deinit();
3675
3676     return ret < 0;
3677 }