ffprobe.c 120 KB
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/*
 * Copyright (c) 2007-2010 Stefano Sabatini
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

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/**
 * @file
 * simple media prober based on the FFmpeg libraries
 */

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#include "config.h"
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#include "libavutil/ffversion.h"
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#include <string.h>

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#include "libavformat/avformat.h"
#include "libavcodec/avcodec.h"
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#include "libavutil/avassert.h"
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#include "libavutil/avstring.h"
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#include "libavutil/bprint.h"
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#include "libavutil/display.h"
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#include "libavutil/hash.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/dict.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/libm.h"
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#include "libavutil/parseutils.h"
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#include "libavutil/timecode.h"
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#include "libavutil/timestamp.h"
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#include "libavdevice/avdevice.h"
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#include "libswscale/swscale.h"
#include "libswresample/swresample.h"
#include "libpostproc/postprocess.h"
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#include "cmdutils.h"

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const char program_name[] = "ffprobe";
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const int program_birth_year = 2007;

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static int do_bitexact = 0;
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static int do_count_frames = 0;
static int do_count_packets = 0;
static int do_read_frames  = 0;
static int do_read_packets = 0;
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static int do_show_chapters = 0;
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static int do_show_error   = 0;
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static int do_show_format  = 0;
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static int do_show_frames  = 0;
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static int do_show_packets = 0;
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static int do_show_programs = 0;
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static int do_show_streams = 0;
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static int do_show_stream_disposition = 0;
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static int do_show_data    = 0;
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static int do_show_program_version  = 0;
static int do_show_library_versions = 0;
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static int do_show_pixel_formats = 0;
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static int do_show_pixel_format_flags = 0;
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static int do_show_pixel_format_components = 0;
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static int do_show_chapter_tags = 0;
static int do_show_format_tags = 0;
static int do_show_frame_tags = 0;
static int do_show_program_tags = 0;
static int do_show_stream_tags = 0;
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static int do_show_packet_tags = 0;
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static int show_value_unit              = 0;
static int use_value_prefix             = 0;
static int use_byte_value_binary_prefix = 0;
static int use_value_sexagesimal_format = 0;
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static int show_private_data            = 1;
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static char *print_format;
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static char *stream_specifier;
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static char *show_data_hash;
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typedef struct ReadInterval {
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    int id;             ///< identifier
    int64_t start, end; ///< start, end in second/AV_TIME_BASE units
    int has_start, has_end;
    int start_is_offset, end_is_offset;
    int duration_frames;
} ReadInterval;

static ReadInterval *read_intervals;
static int read_intervals_nb = 0;

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/* section structure definition */

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#define SECTION_MAX_NB_CHILDREN 10

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struct section {
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    int id;             ///< unique id identifying a section
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    const char *name;

#define SECTION_FLAG_IS_WRAPPER      1 ///< the section only contains other sections, but has no data at its own level
#define SECTION_FLAG_IS_ARRAY        2 ///< the section contains an array of elements of the same type
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#define SECTION_FLAG_HAS_VARIABLE_FIELDS 4 ///< the section may contain a variable number of fields with variable keys.
                                           ///  For these sections the element_name field is mandatory.
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    int flags;
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    int children_ids[SECTION_MAX_NB_CHILDREN+1]; ///< list of children section IDS, terminated by -1
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    const char *element_name; ///< name of the contained element, if provided
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    const char *unique_name;  ///< unique section name, in case the name is ambiguous
    AVDictionary *entries_to_show;
    int show_all_entries;
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};

typedef enum {
    SECTION_ID_NONE = -1,
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    SECTION_ID_CHAPTER,
    SECTION_ID_CHAPTER_TAGS,
    SECTION_ID_CHAPTERS,
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    SECTION_ID_ERROR,
    SECTION_ID_FORMAT,
    SECTION_ID_FORMAT_TAGS,
    SECTION_ID_FRAME,
    SECTION_ID_FRAMES,
    SECTION_ID_FRAME_TAGS,
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    SECTION_ID_FRAME_SIDE_DATA_LIST,
    SECTION_ID_FRAME_SIDE_DATA,
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    SECTION_ID_LIBRARY_VERSION,
    SECTION_ID_LIBRARY_VERSIONS,
    SECTION_ID_PACKET,
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    SECTION_ID_PACKET_TAGS,
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    SECTION_ID_PACKETS,
    SECTION_ID_PACKETS_AND_FRAMES,
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    SECTION_ID_PACKET_SIDE_DATA_LIST,
    SECTION_ID_PACKET_SIDE_DATA,
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    SECTION_ID_PIXEL_FORMAT,
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    SECTION_ID_PIXEL_FORMAT_FLAGS,
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    SECTION_ID_PIXEL_FORMAT_COMPONENT,
    SECTION_ID_PIXEL_FORMAT_COMPONENTS,
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    SECTION_ID_PIXEL_FORMATS,
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    SECTION_ID_PROGRAM_STREAM_DISPOSITION,
    SECTION_ID_PROGRAM_STREAM_TAGS,
    SECTION_ID_PROGRAM,
    SECTION_ID_PROGRAM_STREAMS,
    SECTION_ID_PROGRAM_STREAM,
    SECTION_ID_PROGRAM_TAGS,
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    SECTION_ID_PROGRAM_VERSION,
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    SECTION_ID_PROGRAMS,
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    SECTION_ID_ROOT,
    SECTION_ID_STREAM,
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    SECTION_ID_STREAM_DISPOSITION,
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    SECTION_ID_STREAMS,
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    SECTION_ID_STREAM_TAGS,
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    SECTION_ID_STREAM_SIDE_DATA_LIST,
    SECTION_ID_STREAM_SIDE_DATA,
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    SECTION_ID_SUBTITLE,
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} SectionID;

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static struct section sections[] = {
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    [SECTION_ID_CHAPTERS] =           { SECTION_ID_CHAPTERS, "chapters", SECTION_FLAG_IS_ARRAY, { SECTION_ID_CHAPTER, -1 } },
    [SECTION_ID_CHAPTER] =            { SECTION_ID_CHAPTER, "chapter", 0, { SECTION_ID_CHAPTER_TAGS, -1 } },
    [SECTION_ID_CHAPTER_TAGS] =       { SECTION_ID_CHAPTER_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "chapter_tags" },
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    [SECTION_ID_ERROR] =              { SECTION_ID_ERROR, "error", 0, { -1 } },
    [SECTION_ID_FORMAT] =             { SECTION_ID_FORMAT, "format", 0, { SECTION_ID_FORMAT_TAGS, -1 } },
    [SECTION_ID_FORMAT_TAGS] =        { SECTION_ID_FORMAT_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "format_tags" },
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    [SECTION_ID_FRAMES] =             { SECTION_ID_FRAMES, "frames", SECTION_FLAG_IS_ARRAY, { SECTION_ID_FRAME, SECTION_ID_SUBTITLE, -1 } },
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    [SECTION_ID_FRAME] =              { SECTION_ID_FRAME, "frame", 0, { SECTION_ID_FRAME_TAGS, SECTION_ID_FRAME_SIDE_DATA_LIST, -1 } },
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    [SECTION_ID_FRAME_TAGS] =         { SECTION_ID_FRAME_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "frame_tags" },
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    [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 } },
    [SECTION_ID_FRAME_SIDE_DATA] =     { SECTION_ID_FRAME_SIDE_DATA, "side_data", 0, { -1 } },
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    [SECTION_ID_LIBRARY_VERSIONS] =   { SECTION_ID_LIBRARY_VERSIONS, "library_versions", SECTION_FLAG_IS_ARRAY, { SECTION_ID_LIBRARY_VERSION, -1 } },
    [SECTION_ID_LIBRARY_VERSION] =    { SECTION_ID_LIBRARY_VERSION, "library_version", 0, { -1 } },
    [SECTION_ID_PACKETS] =            { SECTION_ID_PACKETS, "packets", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PACKET, -1} },
    [SECTION_ID_PACKETS_AND_FRAMES] = { SECTION_ID_PACKETS_AND_FRAMES, "packets_and_frames", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PACKET, -1} },
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    [SECTION_ID_PACKET] =             { SECTION_ID_PACKET, "packet", 0, { SECTION_ID_PACKET_TAGS, SECTION_ID_PACKET_SIDE_DATA_LIST, -1 } },
    [SECTION_ID_PACKET_TAGS] =        { SECTION_ID_PACKET_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "packet_tags" },
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    [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 } },
    [SECTION_ID_PACKET_SIDE_DATA] =     { SECTION_ID_PACKET_SIDE_DATA, "side_data", 0, { -1 } },
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    [SECTION_ID_PIXEL_FORMATS] =      { SECTION_ID_PIXEL_FORMATS, "pixel_formats", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PIXEL_FORMAT, -1 } },
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    [SECTION_ID_PIXEL_FORMAT] =       { SECTION_ID_PIXEL_FORMAT, "pixel_format", 0, { SECTION_ID_PIXEL_FORMAT_FLAGS, SECTION_ID_PIXEL_FORMAT_COMPONENTS, -1 } },
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    [SECTION_ID_PIXEL_FORMAT_FLAGS] = { SECTION_ID_PIXEL_FORMAT_FLAGS, "flags", 0, { -1 }, .unique_name = "pixel_format_flags" },
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    [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" },
    [SECTION_ID_PIXEL_FORMAT_COMPONENT]  = { SECTION_ID_PIXEL_FORMAT_COMPONENT, "component", 0, { -1 } },
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    [SECTION_ID_PROGRAM_STREAM_DISPOSITION] = { SECTION_ID_PROGRAM_STREAM_DISPOSITION, "disposition", 0, { -1 }, .unique_name = "program_stream_disposition" },
    [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" },
    [SECTION_ID_PROGRAM] =                    { SECTION_ID_PROGRAM, "program", 0, { SECTION_ID_PROGRAM_TAGS, SECTION_ID_PROGRAM_STREAMS, -1 } },
    [SECTION_ID_PROGRAM_STREAMS] =            { SECTION_ID_PROGRAM_STREAMS, "streams", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PROGRAM_STREAM, -1 }, .unique_name = "program_streams" },
    [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" },
    [SECTION_ID_PROGRAM_TAGS] =               { SECTION_ID_PROGRAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "program_tags" },
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    [SECTION_ID_PROGRAM_VERSION] =    { SECTION_ID_PROGRAM_VERSION, "program_version", 0, { -1 } },
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    [SECTION_ID_PROGRAMS] =                   { SECTION_ID_PROGRAMS, "programs", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PROGRAM, -1 } },
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    [SECTION_ID_ROOT] =               { SECTION_ID_ROOT, "root", SECTION_FLAG_IS_WRAPPER,
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                                        { SECTION_ID_CHAPTERS, SECTION_ID_FORMAT, SECTION_ID_FRAMES, SECTION_ID_PROGRAMS, SECTION_ID_STREAMS,
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                                          SECTION_ID_PACKETS, SECTION_ID_ERROR, SECTION_ID_PROGRAM_VERSION, SECTION_ID_LIBRARY_VERSIONS,
                                          SECTION_ID_PIXEL_FORMATS, -1} },
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    [SECTION_ID_STREAMS] =            { SECTION_ID_STREAMS, "streams", SECTION_FLAG_IS_ARRAY, { SECTION_ID_STREAM, -1 } },
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    [SECTION_ID_STREAM] =             { SECTION_ID_STREAM, "stream", 0, { SECTION_ID_STREAM_DISPOSITION, SECTION_ID_STREAM_TAGS, SECTION_ID_STREAM_SIDE_DATA_LIST, -1 } },
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    [SECTION_ID_STREAM_DISPOSITION] = { SECTION_ID_STREAM_DISPOSITION, "disposition", 0, { -1 }, .unique_name = "stream_disposition" },
    [SECTION_ID_STREAM_TAGS] =        { SECTION_ID_STREAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "stream_tags" },
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    [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 } },
    [SECTION_ID_STREAM_SIDE_DATA] =     { SECTION_ID_STREAM_SIDE_DATA, "side_data", 0, { -1 } },
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    [SECTION_ID_SUBTITLE] =           { SECTION_ID_SUBTITLE, "subtitle", 0, { -1 } },
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};

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static const OptionDef *options;
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/* FFprobe context */
static const char *input_filename;
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static AVInputFormat *iformat = NULL;
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static struct AVHashContext *hash;

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static const struct {
    double bin_val;
    double dec_val;
    const char *bin_str;
    const char *dec_str;
} si_prefixes[] = {
    { 1.0, 1.0, "", "" },
    { 1.024e3, 1e3, "Ki", "K" },
    { 1.048576e6, 1e6, "Mi", "M" },
    { 1.073741824e9, 1e9, "Gi", "G" },
    { 1.099511627776e12, 1e12, "Ti", "T" },
    { 1.125899906842624e15, 1e15, "Pi", "P" },
};
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static const char unit_second_str[]         = "s"    ;
static const char unit_hertz_str[]          = "Hz"   ;
static const char unit_byte_str[]           = "byte" ;
static const char unit_bit_per_second_str[] = "bit/s";
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static int nb_streams;
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static uint64_t *nb_streams_packets;
static uint64_t *nb_streams_frames;
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static int *selected_streams;
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static void ffprobe_cleanup(int ret)
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{
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    int i;
    for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)
        av_dict_free(&(sections[i].entries_to_show));
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}

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struct unit_value {
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    union { double d; long long int i; } val;
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    const char *unit;
};

static char *value_string(char *buf, int buf_size, struct unit_value uv)
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{
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    double vald;
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    long long int vali;
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    int show_float = 0;

    if (uv.unit == unit_second_str) {
        vald = uv.val.d;
        show_float = 1;
    } else {
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        vald = vali = uv.val.i;
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    }

    if (uv.unit == unit_second_str && use_value_sexagesimal_format) {
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        double secs;
        int hours, mins;
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        secs  = vald;
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        mins  = (int)secs / 60;
        secs  = secs - mins * 60;
        hours = mins / 60;
        mins %= 60;
        snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
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    } else {
        const char *prefix_string = "";
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        if (use_value_prefix && vald > 1) {
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            long long int index;

            if (uv.unit == unit_byte_str && use_byte_value_binary_prefix) {
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                index = (long long int) (log2(vald)) / 10;
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                index = av_clip(index, 0, FF_ARRAY_ELEMS(si_prefixes) - 1);
                vald /= si_prefixes[index].bin_val;
                prefix_string = si_prefixes[index].bin_str;
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            } else {
                index = (long long int) (log10(vald)) / 3;
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                index = av_clip(index, 0, FF_ARRAY_ELEMS(si_prefixes) - 1);
                vald /= si_prefixes[index].dec_val;
                prefix_string = si_prefixes[index].dec_str;
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            }
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            vali = vald;
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        }
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        if (show_float || (use_value_prefix && vald != (long long int)vald))
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            snprintf(buf, buf_size, "%f", vald);
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        else
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            snprintf(buf, buf_size, "%lld", vali);
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        av_strlcatf(buf, buf_size, "%s%s%s", *prefix_string || show_value_unit ? " " : "",
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                 prefix_string, show_value_unit ? uv.unit : "");
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    }

    return buf;
}

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/* WRITERS API */
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typedef struct WriterContext WriterContext;
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#define WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS 1
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#define WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER 2
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typedef enum {
    WRITER_STRING_VALIDATION_FAIL,
    WRITER_STRING_VALIDATION_REPLACE,
    WRITER_STRING_VALIDATION_IGNORE,
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    WRITER_STRING_VALIDATION_NB
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} StringValidation;

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typedef struct Writer {
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    const AVClass *priv_class;      ///< private class of the writer, if any
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    int priv_size;                  ///< private size for the writer context
    const char *name;
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    int  (*init)  (WriterContext *wctx);
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    void (*uninit)(WriterContext *wctx);

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    void (*print_section_header)(WriterContext *wctx);
    void (*print_section_footer)(WriterContext *wctx);
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    void (*print_integer)       (WriterContext *wctx, const char *, long long int);
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    void (*print_rational)      (WriterContext *wctx, AVRational *q, char *sep);
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    void (*print_string)        (WriterContext *wctx, const char *, const char *);
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    int flags;                  ///< a combination or WRITER_FLAG_*
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} Writer;

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#define SECTION_MAX_NB_LEVELS 10

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struct WriterContext {
    const AVClass *class;           ///< class of the writer
    const Writer *writer;           ///< the Writer of which this is an instance
    char *name;                     ///< name of this writer instance
    void *priv;                     ///< private data for use by the filter
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    const struct section *sections; ///< array containing all sections
    int nb_sections;                ///< number of sections

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

    /** number of the item printed in the given section, starting from 0 */
    unsigned int nb_item[SECTION_MAX_NB_LEVELS];

    /** section per each level */
    const struct section *section[SECTION_MAX_NB_LEVELS];
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    AVBPrint section_pbuf[SECTION_MAX_NB_LEVELS]; ///< generic print buffer dedicated to each section,
                                                  ///  used by various writers
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    unsigned int nb_section_packet; ///< number of the packet section in case we are in "packets_and_frames" section
    unsigned int nb_section_frame;  ///< number of the frame  section in case we are in "packets_and_frames" section
    unsigned int nb_section_packet_frame; ///< nb_section_packet or nb_section_frame according if is_packets_and_frames
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    int string_validation;
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    char *string_validation_replacement;
    unsigned int string_validation_utf8_flags;
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};
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static const char *writer_get_name(void *p)
{
    WriterContext *wctx = p;
    return wctx->writer->name;
}

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

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static const AVOption writer_options[] = {
    { "string_validation", "set string validation mode",
      OFFSET(string_validation), AV_OPT_TYPE_INT, {.i64=WRITER_STRING_VALIDATION_REPLACE}, 0, WRITER_STRING_VALIDATION_NB-1, .unit = "sv" },
    { "sv", "set string validation mode",
      OFFSET(string_validation), AV_OPT_TYPE_INT, {.i64=WRITER_STRING_VALIDATION_REPLACE}, 0, WRITER_STRING_VALIDATION_NB-1, .unit = "sv" },
    { "ignore",  NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_IGNORE},  .unit = "sv" },
    { "replace", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_REPLACE}, .unit = "sv" },
    { "fail",    NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_FAIL},    .unit = "sv" },
    { "string_validation_replacement", "set string validation replacement string", OFFSET(string_validation_replacement), AV_OPT_TYPE_STRING, {.str=""}},
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    { "svr", "set string validation replacement string", OFFSET(string_validation_replacement), AV_OPT_TYPE_STRING, {.str="\xEF\xBF\xBD"}},
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    { NULL }
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};

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static void *writer_child_next(void *obj, void *prev)
{
    WriterContext *ctx = obj;
    if (!prev && ctx->writer && ctx->writer->priv_class && ctx->priv)
        return ctx->priv;
    return NULL;
}

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static const AVClass writer_class = {
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    .class_name = "Writer",
    .item_name  = writer_get_name,
    .option     = writer_options,
    .version    = LIBAVUTIL_VERSION_INT,
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    .child_next = writer_child_next,
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};

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static void writer_close(WriterContext **wctx)
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{
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    int i;

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    if (!*wctx)
        return;
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    if ((*wctx)->writer->uninit)
        (*wctx)->writer->uninit(*wctx);
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    for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
        av_bprint_finalize(&(*wctx)->section_pbuf[i], NULL);
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    if ((*wctx)->writer->priv_class)
        av_opt_free((*wctx)->priv);
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    av_freep(&((*wctx)->priv));
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    av_opt_free(*wctx);
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    av_freep(wctx);
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}

425 426 427 428 429 430 431 432 433
static void bprint_bytes(AVBPrint *bp, const uint8_t *ubuf, size_t ubuf_size)
{
    int i;
    av_bprintf(bp, "0X");
    for (i = 0; i < ubuf_size; i++)
        av_bprintf(bp, "%02X", ubuf[i]);
}


434 435
static int writer_open(WriterContext **wctx, const Writer *writer, const char *args,
                       const struct section *sections, int nb_sections)
436
{
437
    int i, ret = 0;
438

439
    if (!(*wctx = av_mallocz(sizeof(WriterContext)))) {
440 441
        ret = AVERROR(ENOMEM);
        goto fail;
442 443
    }

444 445 446
    if (!((*wctx)->priv = av_mallocz(writer->priv_size))) {
        ret = AVERROR(ENOMEM);
        goto fail;
447
    }
448

449
    (*wctx)->class = &writer_class;
450
    (*wctx)->writer = writer;
451 452 453
    (*wctx)->level = -1;
    (*wctx)->sections = sections;
    (*wctx)->nb_sections = nb_sections;
454

455 456
    av_opt_set_defaults(*wctx);

457 458 459 460
    if (writer->priv_class) {
        void *priv_ctx = (*wctx)->priv;
        *((const AVClass **)priv_ctx) = writer->priv_class;
        av_opt_set_defaults(priv_ctx);
461
    }
462

463 464 465 466 467 468 469 470
    /* convert options to dictionary */
    if (args) {
        AVDictionary *opts = NULL;
        AVDictionaryEntry *opt = NULL;

        if ((ret = av_dict_parse_string(&opts, args, "=", ":", 0)) < 0) {
            av_log(*wctx, AV_LOG_ERROR, "Failed to parse option string '%s' provided to writer context\n", args);
            av_dict_free(&opts);
471
            goto fail;
472 473 474 475 476 477 478 479 480 481 482 483
        }

        while ((opt = av_dict_get(opts, "", opt, AV_DICT_IGNORE_SUFFIX))) {
            if ((ret = av_opt_set(*wctx, opt->key, opt->value, AV_OPT_SEARCH_CHILDREN)) < 0) {
                av_log(*wctx, AV_LOG_ERROR, "Failed to set option '%s' with value '%s' provided to writer context\n",
                       opt->key, opt->value);
                av_dict_free(&opts);
                goto fail;
            }
        }

        av_dict_free(&opts);
484
    }
485

486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505
    /* validate replace string */
    {
        const uint8_t *p = (*wctx)->string_validation_replacement;
        const uint8_t *endp = p + strlen(p);
        while (*p) {
            const uint8_t *p0 = p;
            int32_t code;
            ret = av_utf8_decode(&code, &p, endp, (*wctx)->string_validation_utf8_flags);
            if (ret < 0) {
                AVBPrint bp;
                av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC);
                bprint_bytes(&bp, p0, p-p0),
                    av_log(wctx, AV_LOG_ERROR,
                           "Invalid UTF8 sequence %s found in string validation replace '%s'\n",
                           bp.str, (*wctx)->string_validation_replacement);
                return ret;
            }
        }
    }

506 507 508
    for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
        av_bprint_init(&(*wctx)->section_pbuf[i], 1, AV_BPRINT_SIZE_UNLIMITED);

509
    if ((*wctx)->writer->init)
510
        ret = (*wctx)->writer->init(*wctx);
511 512 513 514 515 516 517
    if (ret < 0)
        goto fail;

    return 0;

fail:
    writer_close(wctx);
518 519 520
    return ret;
}

521
static inline void writer_print_section_header(WriterContext *wctx,
522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540
                                               int section_id)
{
    int parent_section_id;
    wctx->level++;
    av_assert0(wctx->level < SECTION_MAX_NB_LEVELS);
    parent_section_id = wctx->level ?
        (wctx->section[wctx->level-1])->id : SECTION_ID_NONE;

    wctx->nb_item[wctx->level] = 0;
    wctx->section[wctx->level] = &wctx->sections[section_id];

    if (section_id == SECTION_ID_PACKETS_AND_FRAMES) {
        wctx->nb_section_packet = wctx->nb_section_frame =
        wctx->nb_section_packet_frame = 0;
    } else if (parent_section_id == SECTION_ID_PACKETS_AND_FRAMES) {
        wctx->nb_section_packet_frame = section_id == SECTION_ID_PACKET ?
            wctx->nb_section_packet : wctx->nb_section_frame;
    }

541
    if (wctx->writer->print_section_header)
542
        wctx->writer->print_section_header(wctx);
543 544
}

545
static inline void writer_print_section_footer(WriterContext *wctx)
546
{
547 548 549 550 551 552 553 554 555
    int section_id = wctx->section[wctx->level]->id;
    int parent_section_id = wctx->level ?
        wctx->section[wctx->level-1]->id : SECTION_ID_NONE;

    if (parent_section_id != SECTION_ID_NONE)
        wctx->nb_item[wctx->level-1]++;
    if (parent_section_id == SECTION_ID_PACKETS_AND_FRAMES) {
        if (section_id == SECTION_ID_PACKET) wctx->nb_section_packet++;
        else                                     wctx->nb_section_frame++;
556
    }
557 558 559
    if (wctx->writer->print_section_footer)
        wctx->writer->print_section_footer(wctx);
    wctx->level--;
560
}
561

562
static inline void writer_print_integer(WriterContext *wctx,
563
                                        const char *key, long long int val)
564
{
565 566 567
    const struct section *section = wctx->section[wctx->level];

    if (section->show_all_entries || av_dict_get(section->entries_to_show, key, NULL, 0)) {
568
        wctx->writer->print_integer(wctx, key, val);
569
        wctx->nb_item[wctx->level]++;
570
    }
571 572
}

573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630
static inline int validate_string(WriterContext *wctx, char **dstp, const char *src)
{
    const uint8_t *p, *endp;
    AVBPrint dstbuf;
    int invalid_chars_nb = 0, ret = 0;

    av_bprint_init(&dstbuf, 0, AV_BPRINT_SIZE_UNLIMITED);

    endp = src + strlen(src);
    for (p = (uint8_t *)src; *p;) {
        uint32_t code;
        int invalid = 0;
        const uint8_t *p0 = p;

        if (av_utf8_decode(&code, &p, endp, wctx->string_validation_utf8_flags) < 0) {
            AVBPrint bp;
            av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC);
            bprint_bytes(&bp, p0, p-p0);
            av_log(wctx, AV_LOG_DEBUG,
                   "Invalid UTF-8 sequence %s found in string '%s'\n", bp.str, src);
            invalid = 1;
        }

        if (invalid) {
            invalid_chars_nb++;

            switch (wctx->string_validation) {
            case WRITER_STRING_VALIDATION_FAIL:
                av_log(wctx, AV_LOG_ERROR,
                       "Invalid UTF-8 sequence found in string '%s'\n", src);
                ret = AVERROR_INVALIDDATA;
                goto end;
                break;

            case WRITER_STRING_VALIDATION_REPLACE:
                av_bprintf(&dstbuf, "%s", wctx->string_validation_replacement);
                break;
            }
        }

        if (!invalid || wctx->string_validation == WRITER_STRING_VALIDATION_IGNORE)
            av_bprint_append_data(&dstbuf, p0, p-p0);
    }

    if (invalid_chars_nb && wctx->string_validation == WRITER_STRING_VALIDATION_REPLACE) {
        av_log(wctx, AV_LOG_WARNING,
               "%d invalid UTF-8 sequence(s) found in string '%s', replaced with '%s'\n",
               invalid_chars_nb, src, wctx->string_validation_replacement);
    }

end:
    av_bprint_finalize(&dstbuf, dstp);
    return ret;
}

#define PRINT_STRING_OPT      1
#define PRINT_STRING_VALIDATE 2

631
static inline int writer_print_string(WriterContext *wctx,
632
                                      const char *key, const char *val, int flags)
633
{
634
    const struct section *section = wctx->section[wctx->level];
635
    int ret = 0;
636

637 638
    if ((flags & PRINT_STRING_OPT)
        && !(wctx->writer->flags & WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS))
639
        return 0;
640 641

    if (section->show_all_entries || av_dict_get(section->entries_to_show, key, NULL, 0)) {
642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660
        if (flags & PRINT_STRING_VALIDATE) {
            char *key1 = NULL, *val1 = NULL;
            ret = validate_string(wctx, &key1, key);
            if (ret < 0) goto end;
            ret = validate_string(wctx, &val1, val);
            if (ret < 0) goto end;
            wctx->writer->print_string(wctx, key1, val1);
        end:
            if (ret < 0) {
                av_log(wctx, AV_LOG_ERROR,
                       "Invalid key=value string combination %s=%s in section %s\n",
                       key, val, section->unique_name);
            }
            av_free(key1);
            av_free(val1);
        } else {
            wctx->writer->print_string(wctx, key, val);
        }

661
        wctx->nb_item[wctx->level]++;
662
    }
663 664

    return ret;
665 666
}

667 668 669 670 671 672 673 674 675
static inline void writer_print_rational(WriterContext *wctx,
                                         const char *key, AVRational q, char sep)
{
    AVBPrint buf;
    av_bprint_init(&buf, 0, AV_BPRINT_SIZE_AUTOMATIC);
    av_bprintf(&buf, "%d%c%d", q.num, sep, q.den);
    writer_print_string(wctx, key, buf.str, 0);
}

676
static void writer_print_time(WriterContext *wctx, const char *key,
677
                              int64_t ts, const AVRational *time_base, int is_duration)
678 679 680
{
    char buf[128];

681
    if ((!is_duration && ts == AV_NOPTS_VALUE) || (is_duration && ts == 0)) {
682
        writer_print_string(wctx, key, "N/A", PRINT_STRING_OPT);
683 684 685 686 687 688 689 690
    } else {
        double d = ts * av_q2d(*time_base);
        struct unit_value uv;
        uv.val.d = d;
        uv.unit = unit_second_str;
        value_string(buf, sizeof(buf), uv);
        writer_print_string(wctx, key, buf, 0);
    }
691 692
}

693
static void writer_print_ts(WriterContext *wctx, const char *key, int64_t ts, int is_duration)
694
{
695
    if ((!is_duration && ts == AV_NOPTS_VALUE) || (is_duration && ts == 0)) {
696
        writer_print_string(wctx, key, "N/A", PRINT_STRING_OPT);
697
    } else {
698
        writer_print_integer(wctx, key, ts);
699 700 701
    }
}

702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729
static void writer_print_data(WriterContext *wctx, const char *name,
                              uint8_t *data, int size)
{
    AVBPrint bp;
    int offset = 0, l, i;

    av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED);
    av_bprintf(&bp, "\n");
    while (size) {
        av_bprintf(&bp, "%08x: ", offset);
        l = FFMIN(size, 16);
        for (i = 0; i < l; i++) {
            av_bprintf(&bp, "%02x", data[i]);
            if (i & 1)
                av_bprintf(&bp, " ");
        }
        av_bprint_chars(&bp, ' ', 41 - 2 * i - i / 2);
        for (i = 0; i < l; i++)
            av_bprint_chars(&bp, data[i] - 32U < 95 ? data[i] : '.', 1);
        av_bprintf(&bp, "\n");
        offset += l;
        data   += l;
        size   -= l;
    }
    writer_print_string(wctx, name, bp.str, 0);
    av_bprint_finalize(&bp, NULL);
}

730 731 732 733 734 735 736 737 738 739 740 741 742 743 744
static void writer_print_data_hash(WriterContext *wctx, const char *name,
                                   uint8_t *data, int size)
{
    char *p, buf[AV_HASH_MAX_SIZE * 2 + 64] = { 0 };

    if (!hash)
        return;
    av_hash_init(hash);
    av_hash_update(hash, data, size);
    snprintf(buf, sizeof(buf), "%s:", av_hash_get_name(hash));
    p = buf + strlen(buf);
    av_hash_final_hex(hash, p, buf + sizeof(buf) - p);
    writer_print_string(wctx, name, buf, 0);
}

745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770
static void writer_print_integers(WriterContext *wctx, const char *name,
                                  uint8_t *data, int size, const char *format,
                                  int columns, int bytes, int offset_add)
{
    AVBPrint bp;
    int offset = 0, l, i;

    av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED);
    av_bprintf(&bp, "\n");
    while (size) {
        av_bprintf(&bp, "%08x: ", offset);
        l = FFMIN(size, columns);
        for (i = 0; i < l; i++) {
            if      (bytes == 1) av_bprintf(&bp, format, *data);
            else if (bytes == 2) av_bprintf(&bp, format, AV_RN16(data));
            else if (bytes == 4) av_bprintf(&bp, format, AV_RN32(data));
            data += bytes;
            size --;
        }
        av_bprintf(&bp, "\n");
        offset += offset_add;
    }
    writer_print_string(wctx, name, bp.str, 0);
    av_bprint_finalize(&bp, NULL);
}

771 772
#define MAX_REGISTERED_WRITERS_NB 64

773
static const Writer *registered_writers[MAX_REGISTERED_WRITERS_NB + 1];
774

775
static int writer_register(const Writer *writer)
776
{
777 778 779 780 781 782 783
    static int next_registered_writer_idx = 0;

    if (next_registered_writer_idx == MAX_REGISTERED_WRITERS_NB)
        return AVERROR(ENOMEM);

    registered_writers[next_registered_writer_idx++] = writer;
    return 0;
784 785
}

786
static const Writer *writer_get_by_name(const char *name)
787 788 789 790 791 792 793 794 795
{
    int i;

    for (i = 0; registered_writers[i]; i++)
        if (!strcmp(registered_writers[i]->name, name))
            return registered_writers[i];

    return NULL;
}
796

797

798
/* WRITERS */
799

800 801 802 803 804 805
#define DEFINE_WRITER_CLASS(name)                   \
static const char *name##_get_name(void *ctx)       \
{                                                   \
    return #name ;                                  \
}                                                   \
static const AVClass name##_class = {               \
806 807 808
    .class_name = #name,                            \
    .item_name  = name##_get_name,                  \
    .option     = name##_options                    \
809 810
}

811 812
/* Default output */

813 814
typedef struct DefaultContext {
    const AVClass *class;
815
    int nokey;
816
    int noprint_wrappers;
817
    int nested_section[SECTION_MAX_NB_LEVELS];
818 819
} DefaultContext;

820
#undef OFFSET
821 822 823
#define OFFSET(x) offsetof(DefaultContext, x)

static const AVOption default_options[] = {
824 825 826 827
    { "noprint_wrappers", "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
    { "nw",               "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
    { "nokey",          "force no key printing",     OFFSET(nokey),          AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
    { "nk",             "force no key printing",     OFFSET(nokey),          AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
828 829 830
    {NULL},
};

831
DEFINE_WRITER_CLASS(default);
832

833 834 835 836 837
/* lame uppercasing routine, assumes the string is lower case ASCII */
static inline char *upcase_string(char *dst, size_t dst_size, const char *src)
{
    int i;
    for (i = 0; src[i] && i < dst_size-1; i++)
838
        dst[i] = av_toupper(src[i]);
839 840 841 842
    dst[i] = 0;
    return dst;
}

843
static void default_print_section_header(WriterContext *wctx)
844
{
845
    DefaultContext *def = wctx->priv;
846
    char buf[32];
847 848 849 850
    const struct section *section = wctx->section[wctx->level];
    const struct section *parent_section = wctx->level ?
        wctx->section[wctx->level-1] : NULL;

851
    av_bprint_clear(&wctx->section_pbuf[wctx->level]);
852 853 854
    if (parent_section &&
        !(parent_section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY))) {
        def->nested_section[wctx->level] = 1;
855 856
        av_bprintf(&wctx->section_pbuf[wctx->level], "%s%s:",
                   wctx->section_pbuf[wctx->level-1].str,
857 858 859 860 861
                   upcase_string(buf, sizeof(buf),
                                 av_x_if_null(section->element_name, section->name)));
    }

    if (def->noprint_wrappers || def->nested_section[wctx->level])
862
        return;
863

864 865
    if (!(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
        printf("[%s]\n", upcase_string(buf, sizeof(buf), section->name));
866 867
}

868
static void default_print_section_footer(WriterContext *wctx)
869
{
870
    DefaultContext *def = wctx->priv;
871
    const struct section *section = wctx->section[wctx->level];
872 873
    char buf[32];

874
    if (def->noprint_wrappers || def->nested_section[wctx->level])
875 876 877 878
        return;

    if (!(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
        printf("[/%s]\n", upcase_string(buf, sizeof(buf), section->name));
879 880 881 882
}

static void default_print_str(WriterContext *wctx, const char *key, const char *value)
{
883
    DefaultContext *def = wctx->priv;
884

885
    if (!def->nokey)
886
        printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
887
    printf("%s\n", value);
888 889
}

890
static void default_print_int(WriterContext *wctx, const char *key, long long int value)
891
{
892 893 894
    DefaultContext *def = wctx->priv;

    if (!def->nokey)
895
        printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
896
    printf("%lld\n", value);
897 898
}

899
static const Writer default_writer = {
900
    .name                  = "default",
901
    .priv_size             = sizeof(DefaultContext),
902 903 904 905
    .print_section_header  = default_print_section_header,
    .print_section_footer  = default_print_section_footer,
    .print_integer         = default_print_int,
    .print_string          = default_print_str,
906
    .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
907
    .priv_class            = &default_class,
908 909
};

910 911 912
/* Compact output */

/**
913
 * Apply C-language-like string escaping.
914
 */
915
static const char *c_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
916 917 918 919
{
    const char *p;

    for (p = src; *p; p++) {
920
        switch (*p) {
921 922
        case '\b': av_bprintf(dst, "%s", "\\b");  break;
        case '\f': av_bprintf(dst, "%s", "\\f");  break;
923 924 925
        case '\n': av_bprintf(dst, "%s", "\\n");  break;
        case '\r': av_bprintf(dst, "%s", "\\r");  break;
        case '\\': av_bprintf(dst, "%s", "\\\\"); break;
926 927
        default:
            if (*p == sep)
928 929
                av_bprint_chars(dst, '\\', 1);
            av_bprint_chars(dst, *p, 1);
930 931
        }
    }
932
    return dst->str;
933 934 935 936 937
}

/**
 * Quote fields containing special characters, check RFC4180.
 */
938
static const char *csv_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
939
{
940 941
    char meta_chars[] = { sep, '"', '\n', '\r', '\0' };
    int needs_quoting = !!src[strcspn(src, meta_chars)];
942

943
    if (needs_quoting)
944
        av_bprint_chars(dst, '"', 1);
945

946 947
    for (; *src; src++) {
        if (*src == '"')
948
            av_bprint_chars(dst, '"', 1);
949
        av_bprint_chars(dst, *src, 1);
950
    }
951
    if (needs_quoting)
952
        av_bprint_chars(dst, '"', 1);
953
    return dst->str;
954 955
}

956
static const char *none_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
957 958 959 960 961 962 963 964 965
{
    return src;
}

typedef struct CompactContext {
    const AVClass *class;
    char *item_sep_str;
    char item_sep;
    int nokey;
966
    int print_section;
967
    char *escape_mode_str;
968
    const char * (*escape_str)(AVBPrint *dst, const char *src, const char sep, void *log_ctx);
969
    int nested_section[SECTION_MAX_NB_LEVELS];
970 971
    int has_nested_elems[SECTION_MAX_NB_LEVELS];
    int terminate_line[SECTION_MAX_NB_LEVELS];
972 973
} CompactContext;

974
#undef OFFSET
975 976 977 978 979
#define OFFSET(x) offsetof(CompactContext, x)

static const AVOption compact_options[]= {
    {"item_sep", "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str="|"},  CHAR_MIN, CHAR_MAX },
    {"s",        "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str="|"},  CHAR_MIN, CHAR_MAX },
980 981
    {"nokey",    "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=0},    0,        1        },
    {"nk",       "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=0},    0,        1        },
982 983
    {"escape",   "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"},  CHAR_MIN, CHAR_MAX },
    {"e",        "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"},  CHAR_MIN, CHAR_MAX },
984 985
    {"print_section", "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
    {"p",             "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
986 987 988
    {NULL},
};

989
DEFINE_WRITER_CLASS(compact);
990

991
static av_cold int compact_init(WriterContext *wctx)
992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012
{
    CompactContext *compact = wctx->priv;

    if (strlen(compact->item_sep_str) != 1) {
        av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
               compact->item_sep_str);
        return AVERROR(EINVAL);
    }
    compact->item_sep = compact->item_sep_str[0];

    if      (!strcmp(compact->escape_mode_str, "none")) compact->escape_str = none_escape_str;
    else if (!strcmp(compact->escape_mode_str, "c"   )) compact->escape_str = c_escape_str;
    else if (!strcmp(compact->escape_mode_str, "csv" )) compact->escape_str = csv_escape_str;
    else {
        av_log(wctx, AV_LOG_ERROR, "Unknown escape mode '%s'\n", compact->escape_mode_str);
        return AVERROR(EINVAL);
    }

    return 0;
}

1013
static void compact_print_section_header(WriterContext *wctx)
1014 1015
{
    CompactContext *compact = wctx->priv;
1016
    const struct section *section = wctx->section[wctx->level];
1017 1018
    const struct section *parent_section = wctx->level ?
        wctx->section[wctx->level-1] : NULL;
1019 1020
    compact->terminate_line[wctx->level] = 1;
    compact->has_nested_elems[wctx->level] = 0;
1021

1022
    av_bprint_clear(&wctx->section_pbuf[wctx->level]);
1023
    if (!(section->flags & SECTION_FLAG_IS_ARRAY) && parent_section &&
1024 1025
        !(parent_section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY))) {
        compact->nested_section[wctx->level] = 1;
1026
        compact->has_nested_elems[wctx->level-1] = 1;
1027 1028
        av_bprintf(&wctx->section_pbuf[wctx->level], "%s%s:",
                   wctx->section_pbuf[wctx->level-1].str,
1029
                   (char *)av_x_if_null(section->element_name, section->name));
1030
        wctx->nb_item[wctx->level] = wctx->nb_item[wctx->level-1];
1031 1032 1033 1034 1035 1036 1037 1038 1039 1040
    } else {
        if (parent_section && compact->has_nested_elems[wctx->level-1] &&
            (section->flags & SECTION_FLAG_IS_ARRAY)) {
            compact->terminate_line[wctx->level-1] = 0;
            printf("\n");
        }
        if (compact->print_section &&
            !(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
            printf("%s%c", section->name, compact->item_sep);
    }
1041 1042
}

1043
static void compact_print_section_footer(WriterContext *wctx)
1044
{
1045
    CompactContext *compact = wctx->priv;
1046

1047
    if (!compact->nested_section[wctx->level] &&
1048
        compact->terminate_line[wctx->level] &&
1049
        !(wctx->section[wctx->level]->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
1050
        printf("\n");
1051 1052 1053 1054 1055
}

static void compact_print_str(WriterContext *wctx, const char *key, const char *value)
{
    CompactContext *compact = wctx->priv;
1056
    AVBPrint buf;
1057

1058
    if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);
1059
    if (!compact->nokey)
1060
        printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
1061 1062 1063
    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
    printf("%s", compact->escape_str(&buf, value, compact->item_sep, wctx));
    av_bprint_finalize(&buf, NULL);
1064 1065
}

1066
static void compact_print_int(WriterContext *wctx, const char *key, long long int value)
1067 1068 1069
{
    CompactContext *compact = wctx->priv;

1070
    if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);
1071
    if (!compact->nokey)
1072
        printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
1073
    printf("%lld", value);
1074 1075
}

1076
static const Writer compact_writer = {
1077 1078 1079 1080 1081 1082 1083 1084
    .name                 = "compact",
    .priv_size            = sizeof(CompactContext),
    .init                 = compact_init,
    .print_section_header = compact_print_section_header,
    .print_section_footer = compact_print_section_footer,
    .print_integer        = compact_print_int,
    .print_string         = compact_print_str,
    .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
1085
    .priv_class           = &compact_class,
1086 1087
};

1088 1089
/* CSV output */

1090 1091 1092 1093 1094 1095
#undef OFFSET
#define OFFSET(x) offsetof(CompactContext, x)

static const AVOption csv_options[] = {
    {"item_sep", "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str=","},  CHAR_MIN, CHAR_MAX },
    {"s",        "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str=","},  CHAR_MIN, CHAR_MAX },
1096 1097
    {"nokey",    "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
    {"nk",       "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
1098 1099
    {"escape",   "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="csv"}, CHAR_MIN, CHAR_MAX },
    {"e",        "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="csv"}, CHAR_MIN, CHAR_MAX },
1100 1101
    {"print_section", "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
    {"p",             "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
1102 1103 1104 1105
    {NULL},
};

DEFINE_WRITER_CLASS(csv);
1106

1107
static const Writer csv_writer = {
1108 1109
    .name                 = "csv",
    .priv_size            = sizeof(CompactContext),
1110
    .init                 = compact_init,
1111 1112 1113 1114 1115
    .print_section_header = compact_print_section_header,
    .print_section_footer = compact_print_section_footer,
    .print_integer        = compact_print_int,
    .print_string         = compact_print_str,
    .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
1116
    .priv_class           = &csv_class,
1117 1118
};

1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133
/* Flat output */

typedef struct FlatContext {
    const AVClass *class;
    const char *sep_str;
    char sep;
    int hierarchical;
} FlatContext;

#undef OFFSET
#define OFFSET(x) offsetof(FlatContext, x)

static const AVOption flat_options[]= {
    {"sep_char", "set separator",    OFFSET(sep_str),    AV_OPT_TYPE_STRING, {.str="."},  CHAR_MIN, CHAR_MAX },
    {"s",        "set separator",    OFFSET(sep_str),    AV_OPT_TYPE_STRING, {.str="."},  CHAR_MIN, CHAR_MAX },
1134 1135
    {"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
    {"h",            "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
1136 1137 1138
    {NULL},
};

1139
DEFINE_WRITER_CLASS(flat);
1140

1141
static av_cold int flat_init(WriterContext *wctx)
1142 1143 1144 1145 1146 1147 1148 1149 1150
{
    FlatContext *flat = wctx->priv;

    if (strlen(flat->sep_str) != 1) {
        av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
               flat->sep_str);
        return AVERROR(EINVAL);
    }
    flat->sep = flat->sep_str[0];
1151

1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179
    return 0;
}

static const char *flat_escape_key_str(AVBPrint *dst, const char *src, const char sep)
{
    const char *p;

    for (p = src; *p; p++) {
        if (!((*p >= '0' && *p <= '9') ||
              (*p >= 'a' && *p <= 'z') ||
              (*p >= 'A' && *p <= 'Z')))
            av_bprint_chars(dst, '_', 1);
        else
            av_bprint_chars(dst, *p, 1);
    }
    return dst->str;
}

static const char *flat_escape_value_str(AVBPrint *dst, const char *src)
{
    const char *p;

    for (p = src; *p; p++) {
        switch (*p) {
        case '\n': av_bprintf(dst, "%s", "\\n");  break;
        case '\r': av_bprintf(dst, "%s", "\\r");  break;
        case '\\': av_bprintf(dst, "%s", "\\\\"); break;
        case '"':  av_bprintf(dst, "%s", "\\\""); break;
1180 1181
        case '`':  av_bprintf(dst, "%s", "\\`");  break;
        case '$':  av_bprintf(dst, "%s", "\\$");  break;
1182 1183 1184 1185 1186 1187
        default:   av_bprint_chars(dst, *p, 1);   break;
        }
    }
    return dst->str;
}

1188
static void flat_print_section_header(WriterContext *wctx)
1189 1190
{
    FlatContext *flat = wctx->priv;
1191
    AVBPrint *buf = &wctx->section_pbuf[wctx->level];
1192 1193 1194
    const struct section *section = wctx->section[wctx->level];
    const struct section *parent_section = wctx->level ?
        wctx->section[wctx->level-1] : NULL;
1195

1196 1197
    /* build section header */
    av_bprint_clear(buf);
1198 1199
    if (!parent_section)
        return;
1200
    av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);
1201

1202 1203 1204
    if (flat->hierarchical ||
        !(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER))) {
        av_bprintf(buf, "%s%s", wctx->section[wctx->level]->name, flat->sep_str);
1205

1206 1207 1208 1209 1210
        if (parent_section->flags & SECTION_FLAG_IS_ARRAY) {
            int n = parent_section->id == SECTION_ID_PACKETS_AND_FRAMES ?
                wctx->nb_section_packet_frame : wctx->nb_item[wctx->level-1];
            av_bprintf(buf, "%d%s", n, flat->sep_str);
        }
1211
    }
1212 1213 1214 1215
}

static void flat_print_int(WriterContext *wctx, const char *key, long long int value)
{
1216
    printf("%s%s=%lld\n", wctx->section_pbuf[wctx->level].str, key, value);
1217 1218 1219 1220 1221 1222 1223
}

static void flat_print_str(WriterContext *wctx, const char *key, const char *value)
{
    FlatContext *flat = wctx->priv;
    AVBPrint buf;

1224
    printf("%s", wctx->section_pbuf[wctx->level].str);
1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239
    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
    printf("%s=", flat_escape_key_str(&buf, key, flat->sep));
    av_bprint_clear(&buf);
    printf("\"%s\"\n", flat_escape_value_str(&buf, value));
    av_bprint_finalize(&buf, NULL);
}

static const Writer flat_writer = {
    .name                  = "flat",
    .priv_size             = sizeof(FlatContext),
    .init                  = flat_init,
    .print_section_header  = flat_print_section_header,
    .print_integer         = flat_print_int,
    .print_string          = flat_print_str,
    .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS|WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
1240
    .priv_class            = &flat_class,
1241 1242
};

1243 1244
/* INI format output */

1245
typedef struct INIContext {
1246 1247 1248 1249 1250 1251 1252 1253
    const AVClass *class;
    int hierarchical;
} INIContext;

#undef OFFSET
#define OFFSET(x) offsetof(INIContext, x)

static const AVOption ini_options[] = {
1254 1255
    {"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
    {"h",            "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
1256 1257 1258
    {NULL},
};

1259
DEFINE_WRITER_CLASS(ini);
1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287

static char *ini_escape_str(AVBPrint *dst, const char *src)
{
    int i = 0;
    char c = 0;

    while (c = src[i++]) {
        switch (c) {
        case '\b': av_bprintf(dst, "%s", "\\b"); break;
        case '\f': av_bprintf(dst, "%s", "\\f"); break;
        case '\n': av_bprintf(dst, "%s", "\\n"); break;
        case '\r': av_bprintf(dst, "%s", "\\r"); break;
        case '\t': av_bprintf(dst, "%s", "\\t"); break;
        case '\\':
        case '#' :
        case '=' :
        case ':' : av_bprint_chars(dst, '\\', 1);
        default:
            if ((unsigned char)c < 32)
                av_bprintf(dst, "\\x00%02x", c & 0xff);
            else
                av_bprint_chars(dst, c, 1);
            break;
        }
    }
    return dst->str;
}

1288
static void ini_print_section_header(WriterContext *wctx)
1289 1290
{
    INIContext *ini = wctx->priv;
1291
    AVBPrint *buf = &wctx->section_pbuf[wctx->level];
1292 1293 1294
    const struct section *section = wctx->section[wctx->level];
    const struct section *parent_section = wctx->level ?
        wctx->section[wctx->level-1] : NULL;
1295

1296 1297
    av_bprint_clear(buf);
    if (!parent_section) {
1298 1299 1300
        printf("# ffprobe output\n\n");
        return;
    }
1301

1302
    if (wctx->nb_item[wctx->level-1])
1303 1304
        printf("\n");

1305
    av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);
1306 1307 1308
    if (ini->hierarchical ||
        !(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER))) {
        av_bprintf(buf, "%s%s", buf->str[0] ? "." : "", wctx->section[wctx->level]->name);
1309

1310 1311 1312 1313 1314
        if (parent_section->flags & SECTION_FLAG_IS_ARRAY) {
            int n = parent_section->id == SECTION_ID_PACKETS_AND_FRAMES ?
                wctx->nb_section_packet_frame : wctx->nb_item[wctx->level-1];
            av_bprintf(buf, ".%d", n);
        }
1315
    }
1316

1317
    if (!(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER)))
1318
        printf("[%s]\n", buf->str);
1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343
}

static void ini_print_str(WriterContext *wctx, const char *key, const char *value)
{
    AVBPrint buf;

    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
    printf("%s=", ini_escape_str(&buf, key));
    av_bprint_clear(&buf);
    printf("%s\n", ini_escape_str(&buf, value));
    av_bprint_finalize(&buf, NULL);
}

static void ini_print_int(WriterContext *wctx, const char *key, long long int value)
{
    printf("%s=%lld\n", key, value);
}

static const Writer ini_writer = {
    .name                  = "ini",
    .priv_size             = sizeof(INIContext),
    .print_section_header  = ini_print_section_header,
    .print_integer         = ini_print_int,
    .print_string          = ini_print_str,
    .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS|WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
1344
    .priv_class            = &ini_class,
1345 1346
};

1347 1348
/* JSON output */

1349
typedef struct JSONContext {
1350
    const AVClass *class;
1351
    int indent_level;
1352 1353
    int compact;
    const char *item_sep, *item_start_end;
1354 1355
} JSONContext;

1356 1357 1358 1359
#undef OFFSET
#define OFFSET(x) offsetof(JSONContext, x)

static const AVOption json_options[]= {
1360 1361
    { "compact", "enable compact output", OFFSET(compact), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
    { "c",       "enable compact output", OFFSET(compact), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
1362 1363 1364
    { NULL }
};

1365
DEFINE_WRITER_CLASS(json);
1366

1367
static av_cold int json_init(WriterContext *wctx)
1368 1369
{
    JSONContext *json = wctx->priv;
1370 1371 1372

    json->item_sep       = json->compact ? ", " : ",\n";
    json->item_start_end = json->compact ? " "  : "\n";
1373 1374 1375 1376

    return 0;
}

1377
static const char *json_escape_str(AVBPrint *dst, const char *src, void *log_ctx)
1378 1379 1380
{
    static const char json_escape[] = {'"', '\\', '\b', '\f', '\n', '\r', '\t', 0};
    static const char json_subst[]  = {'"', '\\',  'b',  'f',  'n',  'r',  't', 0};
1381 1382 1383 1384 1385
    const char *p;

    for (p = src; *p; p++) {
        char *s = strchr(json_escape, *p);
        if (s) {
1386 1387
            av_bprint_chars(dst, '\\', 1);
            av_bprint_chars(dst, json_subst[s - json_escape], 1);
1388
        } else if ((unsigned char)*p < 32) {
1389
            av_bprintf(dst, "\\u00%02x", *p & 0xff);
1390
        } else {
1391
            av_bprint_chars(dst, *p, 1);
1392 1393
        }
    }
1394
    return dst->str;
1395 1396
}

1397 1398
#define JSON_INDENT() printf("%*c", json->indent_level * 4, ' ')

1399
static void json_print_section_header(WriterContext *wctx)
1400 1401
{
    JSONContext *json = wctx->priv;
1402
    AVBPrint buf;
1403 1404 1405
    const struct section *section = wctx->section[wctx->level];
    const struct section *parent_section = wctx->level ?
        wctx->section[wctx->level-1] : NULL;
1406

1407 1408 1409 1410 1411 1412 1413
    if (wctx->level && wctx->nb_item[wctx->level-1])
        printf(",\n");

    if (section->flags & SECTION_FLAG_IS_WRAPPER) {
        printf("{\n");
        json->indent_level++;
    } else {
1414
        av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
1415 1416 1417
        json_escape_str(&buf, section->name, wctx);
        JSON_INDENT();

1418
        json->indent_level++;
1419 1420
        if (section->flags & SECTION_FLAG_IS_ARRAY) {
            printf("\"%s\": [\n", buf.str);
1421
        } else if (parent_section && !(parent_section->flags & SECTION_FLAG_IS_ARRAY)) {
1422 1423 1424 1425 1426
            printf("\"%s\": {%s", buf.str, json->item_start_end);
        } else {
            printf("{%s", json->item_start_end);

            /* this is required so the parser can distinguish between packets and frames */
1427
            if (parent_section && parent_section->id == SECTION_ID_PACKETS_AND_FRAMES) {
1428 1429 1430 1431 1432 1433
                if (!json->compact)
                    JSON_INDENT();
                printf("\"type\": \"%s\"%s", section->name, json->item_sep);
            }
        }
        av_bprint_finalize(&buf, NULL);
1434
    }
1435 1436
}

1437
static void json_print_section_footer(WriterContext *wctx)
1438 1439
{
    JSONContext *json = wctx->priv;
1440
    const struct section *section = wctx->section[wctx->level];
1441

1442 1443 1444 1445
    if (wctx->level == 0) {
        json->indent_level--;
        printf("\n}\n");
    } else if (section->flags & SECTION_FLAG_IS_ARRAY) {
1446
        printf("\n");
1447
        json->indent_level--;
1448 1449
        JSON_INDENT();
        printf("]");
1450 1451 1452
    } else {
        printf("%s", json->item_start_end);
        json->indent_level--;
1453 1454
        if (!json->compact)
            JSON_INDENT();
1455
        printf("}");
1456
    }
1457 1458 1459
}

static inline void json_print_item_str(WriterContext *wctx,
1460
                                       const char *key, const char *value)
1461
{
1462
    AVBPrint buf;
1463

1464 1465
    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
    printf("\"%s\":", json_escape_str(&buf, key,   wctx));
1466
    av_bprint_clear(&buf);
1467 1468
    printf(" \"%s\"", json_escape_str(&buf, value, wctx));
    av_bprint_finalize(&buf, NULL);
1469 1470 1471 1472
}

static void json_print_str(WriterContext *wctx, const char *key, const char *value)
{
1473 1474
    JSONContext *json = wctx->priv;

1475 1476
    if (wctx->nb_item[wctx->level])
        printf("%s", json->item_sep);
1477 1478
    if (!json->compact)
        JSON_INDENT();
1479
    json_print_item_str(wctx, key, value);
1480 1481
}

1482
static void json_print_int(WriterContext *wctx, const char *key, long long int value)
1483
{
1484
    JSONContext *json = wctx->priv;
1485
    AVBPrint buf;
1486

1487 1488
    if (wctx->nb_item[wctx->level])
        printf("%s", json->item_sep);
1489 1490
    if (!json->compact)
        JSON_INDENT();
1491 1492 1493 1494

    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
    printf("\"%s\": %lld", json_escape_str(&buf, key, wctx), value);
    av_bprint_finalize(&buf, NULL);
1495
}
1496

1497
static const Writer json_writer = {
1498 1499
    .name                 = "json",
    .priv_size            = sizeof(JSONContext),
1500
    .init                 = json_init,
1501 1502 1503 1504
    .print_section_header = json_print_section_header,
    .print_section_footer = json_print_section_footer,
    .print_integer        = json_print_int,
    .print_string         = json_print_str,
1505
    .flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
1506
    .priv_class           = &json_class,
1507 1508
};

1509 1510
/* XML output */

1511
typedef struct XMLContext {
1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522
    const AVClass *class;
    int within_tag;
    int indent_level;
    int fully_qualified;
    int xsd_strict;
} XMLContext;

#undef OFFSET
#define OFFSET(x) offsetof(XMLContext, x)

static const AVOption xml_options[] = {
1523 1524 1525 1526
    {"fully_qualified", "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
    {"q",               "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
    {"xsd_strict",      "ensure that the output is XSD compliant",         OFFSET(xsd_strict),      AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
    {"x",               "ensure that the output is XSD compliant",         OFFSET(xsd_strict),      AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
1527 1528 1529
    {NULL},
};

1530
DEFINE_WRITER_CLASS(xml);
1531

1532
static av_cold int xml_init(WriterContext *wctx)
1533 1534 1535 1536 1537 1538 1539 1540 1541 1542
{
    XMLContext *xml = wctx->priv;

    if (xml->xsd_strict) {
        xml->fully_qualified = 1;
#define CHECK_COMPLIANCE(opt, opt_name)                                 \
        if (opt) {                                                      \
            av_log(wctx, AV_LOG_ERROR,                                  \
                   "XSD-compliant output selected but option '%s' was selected, XML output may be non-compliant.\n" \
                   "You need to disable such option with '-no%s'\n", opt_name, opt_name); \
1543
            return AVERROR(EINVAL);                                     \
1544 1545 1546 1547
        }
        CHECK_COMPLIANCE(show_private_data, "private");
        CHECK_COMPLIANCE(show_value_unit,   "unit");
        CHECK_COMPLIANCE(use_value_prefix,  "prefix");
1548 1549 1550 1551 1552 1553 1554

        if (do_show_frames && do_show_packets) {
            av_log(wctx, AV_LOG_ERROR,
                   "Interleaved frames and packets are not allowed in XSD. "
                   "Select only one between the -show_frames and the -show_packets options.\n");
            return AVERROR(EINVAL);
        }
1555 1556 1557 1558 1559
    }

    return 0;
}

1560
static const char *xml_escape_str(AVBPrint *dst, const char *src, void *log_ctx)
1561 1562 1563
{
    const char *p;

1564
    for (p = src; *p; p++) {
1565
        switch (*p) {
1566 1567 1568
        case '&' : av_bprintf(dst, "%s", "&amp;");  break;
        case '<' : av_bprintf(dst, "%s", "&lt;");   break;
        case '>' : av_bprintf(dst, "%s", "&gt;");   break;
1569
        case '"' : av_bprintf(dst, "%s", "&quot;"); break;
1570 1571
        case '\'': av_bprintf(dst, "%s", "&apos;"); break;
        default: av_bprint_chars(dst, *p, 1);
1572 1573 1574
        }
    }

1575
    return dst->str;
1576 1577
}

1578
#define XML_INDENT() printf("%*c", xml->indent_level * 4, ' ')
1579

1580
static void xml_print_section_header(WriterContext *wctx)
1581 1582
{
    XMLContext *xml = wctx->priv;
1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596
    const struct section *section = wctx->section[wctx->level];
    const struct section *parent_section = wctx->level ?
        wctx->section[wctx->level-1] : NULL;

    if (wctx->level == 0) {
        const char *qual = " xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' "
            "xmlns:ffprobe='http://www.ffmpeg.org/schema/ffprobe' "
            "xsi:schemaLocation='http://www.ffmpeg.org/schema/ffprobe ffprobe.xsd'";

        printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
        printf("<%sffprobe%s>\n",
               xml->fully_qualified ? "ffprobe:" : "",
               xml->fully_qualified ? qual : "");
        return;
1597 1598
    }

1599 1600 1601
    if (xml->within_tag) {
        xml->within_tag = 0;
        printf(">\n");
1602
    }
1603
    if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {
1604 1605
        xml->indent_level++;
    } else {
1606 1607 1608
        if (parent_section && (parent_section->flags & SECTION_FLAG_IS_WRAPPER) &&
            wctx->level && wctx->nb_item[wctx->level-1])
            printf("\n");
1609
        xml->indent_level++;
1610

1611 1612 1613 1614 1615 1616 1617
        if (section->flags & SECTION_FLAG_IS_ARRAY) {
            XML_INDENT(); printf("<%s>\n", section->name);
        } else {
            XML_INDENT(); printf("<%s ", section->name);
            xml->within_tag = 1;
        }
    }
1618 1619
}

1620
static void xml_print_section_footer(WriterContext *wctx)
1621 1622
{
    XMLContext *xml = wctx->priv;
1623
    const struct section *section = wctx->section[wctx->level];
1624

1625 1626 1627 1628
    if (wctx->level == 0) {
        printf("</%sffprobe>\n", xml->fully_qualified ? "ffprobe:" : "");
    } else if (xml->within_tag) {
        xml->within_tag = 0;
1629
        printf("/>\n");
1630
        xml->indent_level--;
1631
    } else if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {
1632 1633 1634 1635
        xml->indent_level--;
    } else {
        XML_INDENT(); printf("</%s>\n", section->name);
        xml->indent_level--;
1636 1637 1638 1639 1640
    }
}

static void xml_print_str(WriterContext *wctx, const char *key, const char *value)
{
1641
    AVBPrint buf;
1642 1643
    XMLContext *xml = wctx->priv;
    const struct section *section = wctx->section[wctx->level];
1644

1645
    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
1646

1647
    if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {
1648
        XML_INDENT();
1649 1650
        printf("<%s key=\"%s\"",
               section->element_name, xml_escape_str(&buf, key, wctx));
1651 1652 1653 1654 1655 1656 1657 1658
        av_bprint_clear(&buf);
        printf(" value=\"%s\"/>\n", xml_escape_str(&buf, value, wctx));
    } else {
        if (wctx->nb_item[wctx->level])
            printf(" ");
        printf("%s=\"%s\"", key, xml_escape_str(&buf, value, wctx));
    }

1659
    av_bprint_finalize(&buf, NULL);
1660 1661 1662 1663
}

static void xml_print_int(WriterContext *wctx, const char *key, long long int value)
{
1664
    if (wctx->nb_item[wctx->level])
1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676
        printf(" ");
    printf("%s=\"%lld\"", key, value);
}

static Writer xml_writer = {
    .name                 = "xml",
    .priv_size            = sizeof(XMLContext),
    .init                 = xml_init,
    .print_section_header = xml_print_section_header,
    .print_section_footer = xml_print_section_footer,
    .print_integer        = xml_print_int,
    .print_string         = xml_print_str,
1677
    .flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
1678
    .priv_class           = &xml_class,
1679 1680
};

1681 1682 1683 1684 1685 1686 1687 1688 1689
static void writer_register_all(void)
{
    static int initialized;

    if (initialized)
        return;
    initialized = 1;

    writer_register(&default_writer);
1690
    writer_register(&compact_writer);
1691
    writer_register(&csv_writer);
1692
    writer_register(&flat_writer);
1693
    writer_register(&ini_writer);
1694
    writer_register(&json_writer);
1695
    writer_register(&xml_writer);
1696 1697 1698
}

#define print_fmt(k, f, ...) do {              \
1699 1700 1701
    av_bprint_clear(&pbuf);                    \
    av_bprintf(&pbuf, f, __VA_ARGS__);         \
    writer_print_string(w, k, pbuf.str, 0);    \
1702 1703 1704
} while (0)

#define print_int(k, v)         writer_print_integer(w, k, v)
1705
#define print_q(k, v, s)        writer_print_rational(w, k, v, s)
1706
#define print_str(k, v)         writer_print_string(w, k, v, 0)
1707 1708
#define print_str_opt(k, v)     writer_print_string(w, k, v, PRINT_STRING_OPT)
#define print_str_validate(k, v) writer_print_string(w, k, v, PRINT_STRING_VALIDATE)
1709 1710 1711 1712
#define print_time(k, v, tb)    writer_print_time(w, k, v, tb, 0)
#define print_ts(k, v)          writer_print_ts(w, k, v, 0)
#define print_duration_time(k, v, tb) writer_print_time(w, k, v, tb, 1)
#define print_duration_ts(k, v)       writer_print_ts(w, k, v, 1)
1713 1714 1715 1716 1717 1718 1719
#define print_val(k, v, u) do {                                     \
    struct unit_value uv;                                           \
    uv.val.i = v;                                                   \
    uv.unit = u;                                                    \
    writer_print_string(w, k, value_string(val_str, sizeof(val_str), uv), 0); \
} while (0)

1720 1721
#define print_section_header(s) writer_print_section_header(w, s)
#define print_section_footer(s) writer_print_section_footer(w, s)
1722

1723 1724 1725 1726 1727 1728 1729 1730
#define REALLOCZ_ARRAY_STREAM(ptr, cur_n, new_n)                        \
{                                                                       \
    ret = av_reallocp_array(&(ptr), (new_n), sizeof(*(ptr)));           \
    if (ret < 0)                                                        \
        goto end;                                                       \
    memset( (ptr) + (cur_n), 0, ((new_n) - (cur_n)) * sizeof(*(ptr)) ); \
}

1731
static inline int show_tags(WriterContext *w, AVDictionary *tags, int section_id)
1732 1733
{
    AVDictionaryEntry *tag = NULL;
1734
    int ret = 0;
1735 1736

    if (!tags)
1737
        return 0;
1738
    writer_print_section_header(w, section_id);
1739 1740

    while ((tag = av_dict_get(tags, "", tag, AV_DICT_IGNORE_SUFFIX))) {
1741
        if ((ret = print_str_validate(tag->key, tag->value)) < 0)
1742 1743
            break;
    }
1744
    writer_print_section_footer(w);
1745 1746

    return ret;
1747
}
1748 1749

static void show_packet(WriterContext *w, AVFormatContext *fmt_ctx, AVPacket *pkt, int packet_idx)
1750 1751 1752
{
    char val_str[128];
    AVStream *st = fmt_ctx->streams[pkt->stream_index];
1753
    AVBPrint pbuf;
1754
    const char *s;
1755

1756 1757
    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);

1758 1759
    writer_print_section_header(w, SECTION_ID_PACKET);

1760 1761 1762
    s = av_get_media_type_string(st->codec->codec_type);
    if (s) print_str    ("codec_type", s);
    else   print_str_opt("codec_type", "unknown");
1763
    print_int("stream_index",     pkt->stream_index);
1764 1765 1766 1767
    print_ts  ("pts",             pkt->pts);
    print_time("pts_time",        pkt->pts, &st->time_base);
    print_ts  ("dts",             pkt->dts);
    print_time("dts_time",        pkt->dts, &st->time_base);
1768 1769
    print_duration_ts("duration",        pkt->duration);
    print_duration_time("duration_time", pkt->duration, &st->time_base);
1770 1771
    print_duration_ts("convergence_duration", pkt->convergence_duration);
    print_duration_time("convergence_duration_time", pkt->convergence_duration, &st->time_base);
1772
    print_val("size",             pkt->size, unit_byte_str);
1773 1774
    if (pkt->pos != -1) print_fmt    ("pos", "%"PRId64, pkt->pos);
    else                print_str_opt("pos", "N/A");
1775
    print_fmt("flags", "%c",      pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_');
1776 1777 1778

    if (pkt->side_data_elems) {
        int i;
1779 1780 1781 1782 1783 1784 1785 1786 1787 1788
        int size;
        const uint8_t *side_metadata;

        side_metadata = av_packet_get_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA, &size);
        if (side_metadata && size && do_show_packet_tags) {
            AVDictionary *dict = NULL;
            if (av_packet_unpack_dictionary(side_metadata, size, &dict) >= 0)
                show_tags(w, dict, SECTION_ID_PACKET_TAGS);
            av_dict_free(&dict);
        }
1789 1790 1791
        writer_print_section_header(w, SECTION_ID_PACKET_SIDE_DATA_LIST);
        for (i = 0; i < pkt->side_data_elems; i++) {
            AVPacketSideData *sd = &pkt->side_data[i];
1792
            const char *name = av_packet_side_data_name(sd->type);
1793
            writer_print_section_header(w, SECTION_ID_PACKET_SIDE_DATA);
1794
            print_str("side_data_type", name ? name : "unknown");
1795 1796 1797 1798 1799 1800 1801 1802 1803 1804
            print_int("side_data_size", sd->size);
            if (sd->type == AV_PKT_DATA_DISPLAYMATRIX && sd->size >= 9*4) {
                writer_print_integers(w, "displaymatrix", sd->data, 9, " %11d", 3, 4, 1);
                print_int("rotation", av_display_rotation_get((int32_t *)sd->data));
            }
            writer_print_section_footer(w);
        }
        writer_print_section_footer(w);
    }

1805 1806
    if (do_show_data)
        writer_print_data(w, "data", pkt->data, pkt->size);
1807
    writer_print_data_hash(w, "data_hash", pkt->data, pkt->size);
1808
    writer_print_section_footer(w);
1809

1810
    av_bprint_finalize(&pbuf, NULL);
1811
    fflush(stdout);
1812 1813
}

1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836
static void show_subtitle(WriterContext *w, AVSubtitle *sub, AVStream *stream,
                          AVFormatContext *fmt_ctx)
{
    AVBPrint pbuf;

    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);

    writer_print_section_header(w, SECTION_ID_SUBTITLE);

    print_str ("media_type",         "subtitle");
    print_ts  ("pts",                 sub->pts);
    print_time("pts_time",            sub->pts, &AV_TIME_BASE_Q);
    print_int ("format",              sub->format);
    print_int ("start_display_time",  sub->start_display_time);
    print_int ("end_display_time",    sub->end_display_time);
    print_int ("num_rects",           sub->num_rects);

    writer_print_section_footer(w);

    av_bprint_finalize(&pbuf, NULL);
    fflush(stdout);
}

1837 1838
static void show_frame(WriterContext *w, AVFrame *frame, AVStream *stream,
                       AVFormatContext *fmt_ctx)
1839
{
1840
    AVBPrint pbuf;
1841
    char val_str[128];
1842
    const char *s;
1843
    int i;
1844

1845 1846
    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);

1847
    writer_print_section_header(w, SECTION_ID_FRAME);
1848 1849 1850 1851

    s = av_get_media_type_string(stream->codec->codec_type);
    if (s) print_str    ("media_type", s);
    else   print_str_opt("media_type", "unknown");
1852
    print_int("stream_index",           stream->index);
1853 1854 1855 1856 1857
    print_int("key_frame",              frame->key_frame);
    print_ts  ("pkt_pts",               frame->pkt_pts);
    print_time("pkt_pts_time",          frame->pkt_pts, &stream->time_base);
    print_ts  ("pkt_dts",               frame->pkt_dts);
    print_time("pkt_dts_time",          frame->pkt_dts, &stream->time_base);
1858 1859
    print_ts  ("best_effort_timestamp", av_frame_get_best_effort_timestamp(frame));
    print_time("best_effort_timestamp_time", av_frame_get_best_effort_timestamp(frame), &stream->time_base);
1860 1861 1862
    print_duration_ts  ("pkt_duration",      av_frame_get_pkt_duration(frame));
    print_duration_time("pkt_duration_time", av_frame_get_pkt_duration(frame), &stream->time_base);
    if (av_frame_get_pkt_pos (frame) != -1) print_fmt    ("pkt_pos", "%"PRId64, av_frame_get_pkt_pos(frame));
1863
    else                      print_str_opt("pkt_pos", "N/A");
1864
    if (av_frame_get_pkt_size(frame) != -1) print_val    ("pkt_size", av_frame_get_pkt_size(frame), unit_byte_str);
1865
    else                       print_str_opt("pkt_size", "N/A");
1866 1867

    switch (stream->codec->codec_type) {
1868 1869
        AVRational sar;

1870
    case AVMEDIA_TYPE_VIDEO:
1871 1872 1873 1874 1875
        print_int("width",                  frame->width);
        print_int("height",                 frame->height);
        s = av_get_pix_fmt_name(frame->format);
        if (s) print_str    ("pix_fmt", s);
        else   print_str_opt("pix_fmt", "unknown");
1876 1877 1878
        sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, frame);
        if (sar.num) {
            print_q("sample_aspect_ratio", sar, ':');
1879 1880 1881 1882 1883 1884 1885 1886 1887 1888
        } else {
            print_str_opt("sample_aspect_ratio", "N/A");
        }
        print_fmt("pict_type",              "%c", av_get_picture_type_char(frame->pict_type));
        print_int("coded_picture_number",   frame->coded_picture_number);
        print_int("display_picture_number", frame->display_picture_number);
        print_int("interlaced_frame",       frame->interlaced_frame);
        print_int("top_field_first",        frame->top_field_first);
        print_int("repeat_pict",            frame->repeat_pict);
        break;
1889 1890 1891 1892 1893 1894

    case AVMEDIA_TYPE_AUDIO:
        s = av_get_sample_fmt_name(frame->format);
        if (s) print_str    ("sample_fmt", s);
        else   print_str_opt("sample_fmt", "unknown");
        print_int("nb_samples",         frame->nb_samples);
1895 1896 1897 1898 1899 1900 1901 1902
        print_int("channels", av_frame_get_channels(frame));
        if (av_frame_get_channel_layout(frame)) {
            av_bprint_clear(&pbuf);
            av_bprint_channel_layout(&pbuf, av_frame_get_channels(frame),
                                     av_frame_get_channel_layout(frame));
            print_str    ("channel_layout", pbuf.str);
        } else
            print_str_opt("channel_layout", "unknown");
1903 1904
        break;
    }
1905 1906
    if (do_show_frame_tags)
        show_tags(w, av_frame_get_metadata(frame), SECTION_ID_FRAME_TAGS);
1907 1908 1909 1910 1911 1912 1913 1914 1915 1916
    if (frame->nb_side_data) {
        writer_print_section_header(w, SECTION_ID_FRAME_SIDE_DATA_LIST);
        for (i = 0; i < frame->nb_side_data; i++) {
            AVFrameSideData *sd = frame->side_data[i];
            const char *name;

            writer_print_section_header(w, SECTION_ID_FRAME_SIDE_DATA);
            name = av_frame_side_data_name(sd->type);
            print_str("side_data_type", name ? name : "unknown");
            print_int("side_data_size", sd->size);
1917 1918 1919 1920
            if (sd->type == AV_FRAME_DATA_DISPLAYMATRIX && sd->size >= 9*4) {
                writer_print_integers(w, "displaymatrix", sd->data, 9, " %11d", 3, 4, 1);
                print_int("rotation", av_display_rotation_get((int32_t *)sd->data));
            }
1921 1922 1923 1924
            writer_print_section_footer(w);
        }
        writer_print_section_footer(w);
    }
1925

1926
    writer_print_section_footer(w);
1927

1928
    av_bprint_finalize(&pbuf, NULL);
1929 1930 1931
    fflush(stdout);
}

1932 1933 1934
static av_always_inline int process_frame(WriterContext *w,
                                          AVFormatContext *fmt_ctx,
                                          AVFrame *frame, AVPacket *pkt)
1935 1936
{
    AVCodecContext *dec_ctx = fmt_ctx->streams[pkt->stream_index]->codec;
1937
    AVSubtitle sub;
1938
    int ret = 0, got_frame = 0;
1939

1940
    if (dec_ctx->codec) {
1941 1942
        switch (dec_ctx->codec_type) {
        case AVMEDIA_TYPE_VIDEO:
1943
            ret = avcodec_decode_video2(dec_ctx, frame, &got_frame, pkt);
1944
            break;
1945

1946
        case AVMEDIA_TYPE_AUDIO:
1947
            ret = avcodec_decode_audio4(dec_ctx, frame, &got_frame, pkt);
1948
            break;
1949 1950 1951 1952

        case AVMEDIA_TYPE_SUBTITLE:
            ret = avcodec_decode_subtitle2(dec_ctx, &sub, &got_frame, pkt);
            break;
1953
        }
1954
    }
1955

1956 1957 1958 1959 1960 1961
    if (ret < 0)
        return ret;
    ret = FFMIN(ret, pkt->size); /* guard against bogus return values */
    pkt->data += ret;
    pkt->size -= ret;
    if (got_frame) {
1962
        int is_sub = (dec_ctx->codec_type == AVMEDIA_TYPE_SUBTITLE);
1963 1964
        nb_streams_frames[pkt->stream_index]++;
        if (do_show_frames)
1965 1966 1967 1968 1969 1970
            if (is_sub)
                show_subtitle(w, &sub, fmt_ctx->streams[pkt->stream_index], fmt_ctx);
            else
                show_frame(w, frame, fmt_ctx->streams[pkt->stream_index], fmt_ctx);
        if (is_sub)
            avsubtitle_free(&sub);
1971 1972
    }
    return got_frame;
1973 1974
}

1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
static void log_read_interval(const ReadInterval *interval, void *log_ctx, int log_level)
{
    av_log(log_ctx, log_level, "id:%d", interval->id);

    if (interval->has_start) {
        av_log(log_ctx, log_level, " start:%s%s", interval->start_is_offset ? "+" : "",
               av_ts2timestr(interval->start, &AV_TIME_BASE_Q));
    } else {
        av_log(log_ctx, log_level, " start:N/A");
    }

    if (interval->has_end) {
        av_log(log_ctx, log_level, " end:%s", interval->end_is_offset ? "+" : "");
        if (interval->duration_frames)
            av_log(log_ctx, log_level, "#%"PRId64, interval->end);
        else
            av_log(log_ctx, log_level, "%s", av_ts2timestr(interval->end, &AV_TIME_BASE_Q));
    } else {
        av_log(log_ctx, log_level, " end:N/A");
    }

    av_log(log_ctx, log_level, "\n");
}

static int read_interval_packets(WriterContext *w, AVFormatContext *fmt_ctx,
                                 const ReadInterval *interval, int64_t *cur_ts)
2001
{
2002
    AVPacket pkt, pkt1;
2003
    AVFrame *frame = NULL;
2004
    int ret = 0, i = 0, frame_count = 0;
2005
    int64_t start = -INT64_MAX, end = interval->end;
2006
    int has_start = 0, has_end = interval->has_end && !interval->end_is_offset;
2007 2008 2009

    av_init_packet(&pkt);

2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036
    av_log(NULL, AV_LOG_VERBOSE, "Processing read interval ");
    log_read_interval(interval, NULL, AV_LOG_VERBOSE);

    if (interval->has_start) {
        int64_t target;
        if (interval->start_is_offset) {
            if (*cur_ts == AV_NOPTS_VALUE) {
                av_log(NULL, AV_LOG_ERROR,
                       "Could not seek to relative position since current "
                       "timestamp is not defined\n");
                ret = AVERROR(EINVAL);
                goto end;
            }
            target = *cur_ts + interval->start;
        } else {
            target = interval->start;
        }

        av_log(NULL, AV_LOG_VERBOSE, "Seeking to read interval start point %s\n",
               av_ts2timestr(target, &AV_TIME_BASE_Q));
        if ((ret = avformat_seek_file(fmt_ctx, -1, -INT64_MAX, target, INT64_MAX, 0)) < 0) {
            av_log(NULL, AV_LOG_ERROR, "Could not seek to position %"PRId64": %s\n",
                   interval->start, av_err2str(ret));
            goto end;
        }
    }

2037
    frame = av_frame_alloc();
2038 2039 2040 2041
    if (!frame) {
        ret = AVERROR(ENOMEM);
        goto end;
    }
2042
    while (!av_read_frame(fmt_ctx, &pkt)) {
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        if (fmt_ctx->nb_streams > nb_streams) {
            REALLOCZ_ARRAY_STREAM(nb_streams_frames,  nb_streams, fmt_ctx->nb_streams);
            REALLOCZ_ARRAY_STREAM(nb_streams_packets, nb_streams, fmt_ctx->nb_streams);
            REALLOCZ_ARRAY_STREAM(selected_streams,   nb_streams, fmt_ctx->nb_streams);
            nb_streams = fmt_ctx->nb_streams;
        }
2049
        if (selected_streams[pkt.stream_index]) {
2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072
            AVRational tb = fmt_ctx->streams[pkt.stream_index]->time_base;

            if (pkt.pts != AV_NOPTS_VALUE)
                *cur_ts = av_rescale_q(pkt.pts, tb, AV_TIME_BASE_Q);

            if (!has_start && *cur_ts != AV_NOPTS_VALUE) {
                start = *cur_ts;
                has_start = 1;
            }

            if (has_start && !has_end && interval->end_is_offset) {
                end = start + interval->end;
                has_end = 1;
            }

            if (interval->end_is_offset && interval->duration_frames) {
                if (frame_count >= interval->end)
                    break;
            } else if (has_end && *cur_ts != AV_NOPTS_VALUE && *cur_ts >= end) {
                break;
            }

            frame_count++;
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            if (do_read_packets) {
                if (do_show_packets)
                    show_packet(w, fmt_ctx, &pkt, i++);
                nb_streams_packets[pkt.stream_index]++;
            }
            if (do_read_frames) {
                pkt1 = pkt;
2080
                while (pkt1.size && process_frame(w, fmt_ctx, frame, &pkt1) > 0);
2081
            }
2082
        }
2083
        av_packet_unref(&pkt);
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    }
    av_init_packet(&pkt);
    pkt.data = NULL;
    pkt.size = 0;
    //Flush remaining frames that are cached in the decoder
    for (i = 0; i < fmt_ctx->nb_streams; i++) {
        pkt.stream_index = i;
2091
        if (do_read_frames)
2092
            while (process_frame(w, fmt_ctx, frame, &pkt) > 0);
2093
    }
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end:
2096
    av_frame_free(&frame);
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    if (ret < 0) {
        av_log(NULL, AV_LOG_ERROR, "Could not read packets in interval ");
        log_read_interval(interval, NULL, AV_LOG_ERROR);
    }
    return ret;
}

2104
static int read_packets(WriterContext *w, AVFormatContext *fmt_ctx)
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{
    int i, ret = 0;
    int64_t cur_ts = fmt_ctx->start_time;

    if (read_intervals_nb == 0) {
        ReadInterval interval = (ReadInterval) { .has_start = 0, .has_end = 0 };
        ret = read_interval_packets(w, fmt_ctx, &interval, &cur_ts);
    } else {
        for (i = 0; i < read_intervals_nb; i++) {
            ret = read_interval_packets(w, fmt_ctx, &read_intervals[i], &cur_ts);
            if (ret < 0)
                break;
        }
    }
2119 2120

    return ret;
2121 2122
}

2123
static int show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_idx, int in_program)
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2124 2125 2126
{
    AVStream *stream = fmt_ctx->streams[stream_idx];
    AVCodecContext *dec_ctx;
2127
    const AVCodec *dec;
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2128
    char val_str[128];
2129
    const char *s;
2130
    AVRational sar, dar;
2131
    AVBPrint pbuf;
2132
    const AVCodecDescriptor *cd;
2133
    int ret = 0;
2134 2135

    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
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2136

2137
    writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM : SECTION_ID_STREAM);
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2138

2139
    print_int("index", stream->index);
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    if ((dec_ctx = stream->codec)) {
2142
        const char *profile = NULL;
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        dec = dec_ctx->codec;
        if (dec) {
            print_str("codec_name", dec->name);
            if (!do_bitexact) {
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                if (dec->long_name) print_str    ("codec_long_name", dec->long_name);
                else                print_str_opt("codec_long_name", "unknown");
2149
            }
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        } else if ((cd = avcodec_descriptor_get(stream->codec->codec_id))) {
            print_str_opt("codec_name", cd->name);
            if (!do_bitexact) {
                print_str_opt("codec_long_name",
                              cd->long_name ? cd->long_name : "unknown");
            }
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2156
        } else {
2157
            print_str_opt("codec_name", "unknown");
2158
            if (!do_bitexact) {
2159
                print_str_opt("codec_long_name", "unknown");
2160
            }
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        }

2163
        if (!do_bitexact && dec && (profile = av_get_profile_name(dec, dec_ctx->profile)))
2164
            print_str("profile", profile);
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        else {
            if (dec_ctx->profile != FF_PROFILE_UNKNOWN) {
                char profile_num[12];
                snprintf(profile_num, sizeof(profile_num), "%d", dec_ctx->profile);
                print_str("profile", profile_num);
            } else
                print_str_opt("profile", "unknown");
        }
2173

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        s = av_get_media_type_string(dec_ctx->codec_type);
        if (s) print_str    ("codec_type", s);
        else   print_str_opt("codec_type", "unknown");
2177
        print_q("codec_time_base", dec_ctx->time_base, '/');
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2178 2179

        /* print AVI/FourCC tag */
2180
        av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
2181 2182
        print_str("codec_tag_string",    val_str);
        print_fmt("codec_tag", "0x%04x", dec_ctx->codec_tag);
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2183 2184

        switch (dec_ctx->codec_type) {
2185
        case AVMEDIA_TYPE_VIDEO:
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            print_int("width",        dec_ctx->width);
            print_int("height",       dec_ctx->height);
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            print_int("coded_width",  dec_ctx->coded_width);
            print_int("coded_height", dec_ctx->coded_height);
2190
            print_int("has_b_frames", dec_ctx->has_b_frames);
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            sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, NULL);
            if (sar.den) {
                print_q("sample_aspect_ratio", sar, ':');
                av_reduce(&dar.num, &dar.den,
                          dec_ctx->width  * sar.num,
                          dec_ctx->height * sar.den,
2197
                          1024*1024);
2198
                print_q("display_aspect_ratio", dar, ':');
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            } else {
                print_str_opt("sample_aspect_ratio", "N/A");
                print_str_opt("display_aspect_ratio", "N/A");
2202
            }
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            s = av_get_pix_fmt_name(dec_ctx->pix_fmt);
            if (s) print_str    ("pix_fmt", s);
            else   print_str_opt("pix_fmt", "unknown");
2206
            print_int("level",   dec_ctx->level);
2207
            if (dec_ctx->color_range != AVCOL_RANGE_UNSPECIFIED)
2208
                print_str    ("color_range", av_color_range_name(dec_ctx->color_range));
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            else
                print_str_opt("color_range", "N/A");
            s = av_get_colorspace_name(dec_ctx->colorspace);
            if (s) print_str    ("color_space", s);
            else   print_str_opt("color_space", "unknown");
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            if (dec_ctx->color_trc != AVCOL_TRC_UNSPECIFIED)
                print_str("color_transfer", av_color_transfer_name(dec_ctx->color_trc));
            else
                print_str_opt("color_transfer", av_color_transfer_name(dec_ctx->color_trc));

            if (dec_ctx->color_primaries != AVCOL_PRI_UNSPECIFIED)
                print_str("color_primaries", av_color_primaries_name(dec_ctx->color_primaries));
            else
                print_str_opt("color_primaries", av_color_primaries_name(dec_ctx->color_primaries));

            if (dec_ctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
                print_str("chroma_location", av_chroma_location_name(dec_ctx->chroma_sample_location));
            else
                print_str_opt("chroma_location", av_chroma_location_name(dec_ctx->chroma_sample_location));

2230
            if (dec_ctx->timecode_frame_start >= 0) {
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                char tcbuf[AV_TIMECODE_STR_SIZE];
                av_timecode_make_mpeg_tc_string(tcbuf, dec_ctx->timecode_frame_start);
                print_str("timecode", tcbuf);
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            } else {
                print_str_opt("timecode", "N/A");
            }
2237
            print_int("refs", dec_ctx->refs);
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2238 2239
            break;

2240
        case AVMEDIA_TYPE_AUDIO:
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            s = av_get_sample_fmt_name(dec_ctx->sample_fmt);
            if (s) print_str    ("sample_fmt", s);
            else   print_str_opt("sample_fmt", "unknown");
2244
            print_val("sample_rate",     dec_ctx->sample_rate, unit_hertz_str);
2245
            print_int("channels",        dec_ctx->channels);
2246 2247 2248 2249 2250 2251 2252 2253 2254

            if (dec_ctx->channel_layout) {
                av_bprint_clear(&pbuf);
                av_bprint_channel_layout(&pbuf, dec_ctx->channels, dec_ctx->channel_layout);
                print_str    ("channel_layout", pbuf.str);
            } else {
                print_str_opt("channel_layout", "unknown");
            }

2255
            print_int("bits_per_sample", av_get_bits_per_sample(dec_ctx->codec_id));
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2256
            break;
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        case AVMEDIA_TYPE_SUBTITLE:
            if (dec_ctx->width)
                print_int("width",       dec_ctx->width);
            else
                print_str_opt("width",   "N/A");
            if (dec_ctx->height)
                print_int("height",      dec_ctx->height);
            else
                print_str_opt("height",  "N/A");
            break;
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2268 2269
        }
    } else {
2270
        print_str_opt("codec_type", "unknown");
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2271
    }
2272
    if (dec_ctx->codec && dec_ctx->codec->priv_class && show_private_data) {
2273
        const AVOption *opt = NULL;
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        while (opt = av_opt_next(dec_ctx->priv_data,opt)) {
            uint8_t *str;
            if (opt->flags) continue;
            if (av_opt_get(dec_ctx->priv_data, opt->name, 0, &str) >= 0) {
                print_str(opt->name, str);
                av_free(str);
            }
        }
    }
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2283

2284 2285
    if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS) print_fmt    ("id", "0x%x", stream->id);
    else                                          print_str_opt("id", "N/A");
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    print_q("r_frame_rate",   stream->r_frame_rate,   '/');
    print_q("avg_frame_rate", stream->avg_frame_rate, '/');
    print_q("time_base",      stream->time_base,      '/');
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    print_ts  ("start_pts",   stream->start_time);
    print_time("start_time",  stream->start_time, &stream->time_base);
    print_ts  ("duration_ts", stream->duration);
    print_time("duration",    stream->duration, &stream->time_base);
2293 2294
    if (dec_ctx->bit_rate > 0) print_val    ("bit_rate", dec_ctx->bit_rate, unit_bit_per_second_str);
    else                       print_str_opt("bit_rate", "N/A");
2295 2296
    if (dec_ctx->rc_max_rate > 0) print_val ("max_bit_rate", dec_ctx->rc_max_rate, unit_bit_per_second_str);
    else                       print_str_opt("max_bit_rate", "N/A");
2297 2298
    if (dec_ctx->bits_per_raw_sample > 0) print_fmt("bits_per_raw_sample", "%d", dec_ctx->bits_per_raw_sample);
    else                       print_str_opt("bits_per_raw_sample", "N/A");
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    if (stream->nb_frames) print_fmt    ("nb_frames", "%"PRId64, stream->nb_frames);
    else                   print_str_opt("nb_frames", "N/A");
2301 2302 2303 2304
    if (nb_streams_frames[stream_idx])  print_fmt    ("nb_read_frames", "%"PRIu64, nb_streams_frames[stream_idx]);
    else                                print_str_opt("nb_read_frames", "N/A");
    if (nb_streams_packets[stream_idx]) print_fmt    ("nb_read_packets", "%"PRIu64, nb_streams_packets[stream_idx]);
    else                                print_str_opt("nb_read_packets", "N/A");
2305 2306 2307
    if (do_show_data)
        writer_print_data(w, "extradata", dec_ctx->extradata,
                                          dec_ctx->extradata_size);
2308 2309
    writer_print_data_hash(w, "extradata_hash", dec_ctx->extradata,
                                                dec_ctx->extradata_size);
2310 2311 2312 2313 2314 2315

    /* Print disposition information */
#define PRINT_DISPOSITION(flagname, name) do {                                \
        print_int(name, !!(stream->disposition & AV_DISPOSITION_##flagname)); \
    } while (0)

2316
    if (do_show_stream_disposition) {
2317
    writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM_DISPOSITION : SECTION_ID_STREAM_DISPOSITION);
2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329
    PRINT_DISPOSITION(DEFAULT,          "default");
    PRINT_DISPOSITION(DUB,              "dub");
    PRINT_DISPOSITION(ORIGINAL,         "original");
    PRINT_DISPOSITION(COMMENT,          "comment");
    PRINT_DISPOSITION(LYRICS,           "lyrics");
    PRINT_DISPOSITION(KARAOKE,          "karaoke");
    PRINT_DISPOSITION(FORCED,           "forced");
    PRINT_DISPOSITION(HEARING_IMPAIRED, "hearing_impaired");
    PRINT_DISPOSITION(VISUAL_IMPAIRED,  "visual_impaired");
    PRINT_DISPOSITION(CLEAN_EFFECTS,    "clean_effects");
    PRINT_DISPOSITION(ATTACHED_PIC,     "attached_pic");
    writer_print_section_footer(w);
2330
    }
2331

2332 2333
    if (do_show_stream_tags)
        ret = show_tags(w, stream->metadata, in_program ? SECTION_ID_PROGRAM_STREAM_TAGS : SECTION_ID_STREAM_TAGS);
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2334

2335 2336 2337 2338 2339
    if (stream->nb_side_data) {
        int i;
        writer_print_section_header(w, SECTION_ID_STREAM_SIDE_DATA_LIST);
        for (i = 0; i < stream->nb_side_data; i++) {
            AVPacketSideData *sd = &stream->side_data[i];
2340 2341
            const char *name = av_packet_side_data_name(sd->type);

2342
            writer_print_section_header(w, SECTION_ID_STREAM_SIDE_DATA);
2343
            print_str("side_data_type", name ? name : "unknown");
2344 2345 2346 2347 2348 2349 2350 2351 2352 2353
            print_int("side_data_size", sd->size);
            if (sd->type == AV_PKT_DATA_DISPLAYMATRIX && sd->size >= 9*4) {
                writer_print_integers(w, "displaymatrix", sd->data, 9, " %11d", 3, 4, 1);
                print_int("rotation", av_display_rotation_get((int32_t *)sd->data));
            }
            writer_print_section_footer(w);
        }
        writer_print_section_footer(w);
    }

2354
    writer_print_section_footer(w);
2355
    av_bprint_finalize(&pbuf, NULL);
2356
    fflush(stdout);
2357 2358

    return ret;
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2359 2360
}

2361
static int show_streams(WriterContext *w, AVFormatContext *fmt_ctx)
2362
{
2363 2364
    int i, ret = 0;

2365
    writer_print_section_header(w, SECTION_ID_STREAMS);
2366
    for (i = 0; i < fmt_ctx->nb_streams; i++)
2367 2368 2369 2370 2371
        if (selected_streams[i]) {
            ret = show_stream(w, fmt_ctx, i, 0);
            if (ret < 0)
                break;
        }
2372
    writer_print_section_footer(w);
2373 2374

    return ret;
2375 2376
}

2377
static int show_program(WriterContext *w, AVFormatContext *fmt_ctx, AVProgram *program)
2378
{
2379
    int i, ret = 0;
2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390

    writer_print_section_header(w, SECTION_ID_PROGRAM);
    print_int("program_id", program->id);
    print_int("program_num", program->program_num);
    print_int("nb_streams", program->nb_stream_indexes);
    print_int("pmt_pid", program->pmt_pid);
    print_int("pcr_pid", program->pcr_pid);
    print_ts("start_pts", program->start_time);
    print_time("start_time", program->start_time, &AV_TIME_BASE_Q);
    print_ts("end_pts", program->end_time);
    print_time("end_time", program->end_time, &AV_TIME_BASE_Q);
2391 2392
    if (do_show_program_tags)
        ret = show_tags(w, program->metadata, SECTION_ID_PROGRAM_TAGS);
2393 2394
    if (ret < 0)
        goto end;
2395 2396 2397

    writer_print_section_header(w, SECTION_ID_PROGRAM_STREAMS);
    for (i = 0; i < program->nb_stream_indexes; i++) {
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        if (selected_streams[program->stream_index[i]]) {
            ret = show_stream(w, fmt_ctx, program->stream_index[i], 1);
            if (ret < 0)
                break;
        }
2403 2404 2405
    }
    writer_print_section_footer(w);

2406
end:
2407
    writer_print_section_footer(w);
2408
    return ret;
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}

2411
static int show_programs(WriterContext *w, AVFormatContext *fmt_ctx)
2412
{
2413
    int i, ret = 0;
2414 2415 2416 2417 2418 2419

    writer_print_section_header(w, SECTION_ID_PROGRAMS);
    for (i = 0; i < fmt_ctx->nb_programs; i++) {
        AVProgram *program = fmt_ctx->programs[i];
        if (!program)
            continue;
2420 2421 2422
        ret = show_program(w, fmt_ctx, program);
        if (ret < 0)
            break;
2423
    }
2424
    writer_print_section_footer(w);
2425
    return ret;
2426 2427
}

2428
static int show_chapters(WriterContext *w, AVFormatContext *fmt_ctx)
2429
{
2430
    int i, ret = 0;
2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442

    writer_print_section_header(w, SECTION_ID_CHAPTERS);
    for (i = 0; i < fmt_ctx->nb_chapters; i++) {
        AVChapter *chapter = fmt_ctx->chapters[i];

        writer_print_section_header(w, SECTION_ID_CHAPTER);
        print_int("id", chapter->id);
        print_q  ("time_base", chapter->time_base, '/');
        print_int("start", chapter->start);
        print_time("start_time", chapter->start, &chapter->time_base);
        print_int("end", chapter->end);
        print_time("end_time", chapter->end, &chapter->time_base);
2443 2444
        if (do_show_chapter_tags)
            ret = show_tags(w, chapter->metadata, SECTION_ID_CHAPTER_TAGS);
2445 2446 2447
        writer_print_section_footer(w);
    }
    writer_print_section_footer(w);
2448 2449

    return ret;
2450 2451
}

2452
static int show_format(WriterContext *w, AVFormatContext *fmt_ctx)
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2453 2454
{
    char val_str[128];
2455
    int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;
2456
    int ret = 0;
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2457

2458
    writer_print_section_header(w, SECTION_ID_FORMAT);
2459
    print_str_validate("filename", fmt_ctx->filename);
2460
    print_int("nb_streams",       fmt_ctx->nb_streams);
2461
    print_int("nb_programs",      fmt_ctx->nb_programs);
2462
    print_str("format_name",      fmt_ctx->iformat->name);
2463
    if (!do_bitexact) {
2464 2465
        if (fmt_ctx->iformat->long_name) print_str    ("format_long_name", fmt_ctx->iformat->long_name);
        else                             print_str_opt("format_long_name", "unknown");
2466
    }
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    print_time("start_time",      fmt_ctx->start_time, &AV_TIME_BASE_Q);
    print_time("duration",        fmt_ctx->duration,   &AV_TIME_BASE_Q);
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    if (size >= 0) print_val    ("size", size, unit_byte_str);
    else           print_str_opt("size", "N/A");
    if (fmt_ctx->bit_rate > 0) print_val    ("bit_rate", fmt_ctx->bit_rate, unit_bit_per_second_str);
    else                       print_str_opt("bit_rate", "N/A");
2473
    print_int("probe_score", av_format_get_probe_score(fmt_ctx));
2474 2475
    if (do_show_format_tags)
        ret = show_tags(w, fmt_ctx->metadata, SECTION_ID_FORMAT_TAGS);
2476 2477

    writer_print_section_footer(w);
2478
    fflush(stdout);
2479
    return ret;
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2480 2481
}

2482 2483 2484 2485 2486 2487 2488 2489
static void show_error(WriterContext *w, int err)
{
    char errbuf[128];
    const char *errbuf_ptr = errbuf;

    if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
        errbuf_ptr = strerror(AVUNERROR(err));

2490
    writer_print_section_header(w, SECTION_ID_ERROR);
2491 2492
    print_int("code", err);
    print_str("string", errbuf_ptr);
2493
    writer_print_section_footer(w);
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}

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static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
{
2498
    int err, i, orig_nb_streams;
2499 2500
    AVFormatContext *fmt_ctx = NULL;
    AVDictionaryEntry *t;
2501
    AVDictionary **opts;
2502
    int scan_all_pmts_set = 0;
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    if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
        av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
        scan_all_pmts_set = 1;
    }
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    if ((err = avformat_open_input(&fmt_ctx, filename,
                                   iformat, &format_opts)) < 0) {
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        print_error(filename, err);
        return err;
    }
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    *fmt_ctx_ptr = fmt_ctx;
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    if (scan_all_pmts_set)
        av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
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    if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
        av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
        return AVERROR_OPTION_NOT_FOUND;
    }

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    /* fill the streams in the format context */
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    opts = setup_find_stream_info_opts(fmt_ctx, codec_opts);
    orig_nb_streams = fmt_ctx->nb_streams;

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    err = avformat_find_stream_info(fmt_ctx, opts);

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    for (i = 0; i < orig_nb_streams; i++)
        av_dict_free(&opts[i]);
    av_freep(&opts);
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    if (err < 0) {
        print_error(filename, err);
        return err;
    }

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    av_dump_format(fmt_ctx, 0, filename, 0);
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    /* bind a decoder to each input stream */
    for (i = 0; i < fmt_ctx->nb_streams; i++) {
        AVStream *stream = fmt_ctx->streams[i];
        AVCodec *codec;

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        if (stream->codec->codec_id == AV_CODEC_ID_PROBE) {
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            av_log(NULL, AV_LOG_WARNING,
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                   "Failed to probe codec for input stream %d\n",
                    stream->index);
        } else if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
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            av_log(NULL, AV_LOG_WARNING,
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                    "Unsupported codec with id %d for input stream %d\n",
                    stream->codec->codec_id, stream->index);
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        } else {
            AVDictionary *opts = filter_codec_opts(codec_opts, stream->codec->codec_id,
                                                   fmt_ctx, stream, codec);
            if (avcodec_open2(stream->codec, codec, &opts) < 0) {
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                av_log(NULL, AV_LOG_WARNING, "Could not open codec for input stream %d\n",
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                       stream->index);
            }
            if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
                av_log(NULL, AV_LOG_ERROR, "Option %s for input stream %d not found\n",
                       t->key, stream->index);
                return AVERROR_OPTION_NOT_FOUND;
            }
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        }
    }

    *fmt_ctx_ptr = fmt_ctx;
    return 0;
}

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static void close_input_file(AVFormatContext **ctx_ptr)
{
    int i;
    AVFormatContext *fmt_ctx = *ctx_ptr;

    /* close decoder for each stream */
    for (i = 0; i < fmt_ctx->nb_streams; i++)
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        if (fmt_ctx->streams[i]->codec->codec_id != AV_CODEC_ID_NONE)
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            avcodec_close(fmt_ctx->streams[i]->codec);

    avformat_close_input(ctx_ptr);
}

2583
static int probe_file(WriterContext *wctx, const char *filename)
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{
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    AVFormatContext *fmt_ctx = NULL;
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    int ret, i;
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    int section_id;
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    do_read_frames = do_show_frames || do_count_frames;
    do_read_packets = do_show_packets || do_count_packets;

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    ret = open_input_file(&fmt_ctx, filename);
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    if (ret < 0)
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        goto end;
2595

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#define CHECK_END if (ret < 0) goto end

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    nb_streams = fmt_ctx->nb_streams;
    REALLOCZ_ARRAY_STREAM(nb_streams_frames,0,fmt_ctx->nb_streams);
    REALLOCZ_ARRAY_STREAM(nb_streams_packets,0,fmt_ctx->nb_streams);
    REALLOCZ_ARRAY_STREAM(selected_streams,0,fmt_ctx->nb_streams);
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    for (i = 0; i < fmt_ctx->nb_streams; i++) {
        if (stream_specifier) {
            ret = avformat_match_stream_specifier(fmt_ctx,
                                                  fmt_ctx->streams[i],
                                                  stream_specifier);
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            CHECK_END;
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            else
                selected_streams[i] = ret;
            ret = 0;
        } else {
            selected_streams[i] = 1;
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        }
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    }

    if (do_read_frames || do_read_packets) {
        if (do_show_frames && do_show_packets &&
            wctx->writer->flags & WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER)
            section_id = SECTION_ID_PACKETS_AND_FRAMES;
        else if (do_show_packets && !do_show_frames)
            section_id = SECTION_ID_PACKETS;
        else // (!do_show_packets && do_show_frames)
            section_id = SECTION_ID_FRAMES;
        if (do_show_frames || do_show_packets)
            writer_print_section_header(wctx, section_id);
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        ret = read_packets(wctx, fmt_ctx);
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        if (do_show_frames || do_show_packets)
            writer_print_section_footer(wctx);
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        CHECK_END;
    }
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    if (do_show_programs) {
        ret = show_programs(wctx, fmt_ctx);
        CHECK_END;
    }

    if (do_show_streams) {
        ret = show_streams(wctx, fmt_ctx);
        CHECK_END;
    }
    if (do_show_chapters) {
        ret = show_chapters(wctx, fmt_ctx);
        CHECK_END;
    }
    if (do_show_format) {
        ret = show_format(wctx, fmt_ctx);
        CHECK_END;
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    }

end:
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    if (fmt_ctx)
        close_input_file(&fmt_ctx);
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    av_freep(&nb_streams_frames);
    av_freep(&nb_streams_packets);
    av_freep(&selected_streams);
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    return ret;
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}

static void show_usage(void)
{
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    av_log(NULL, AV_LOG_INFO, "Simple multimedia streams analyzer\n");
    av_log(NULL, AV_LOG_INFO, "usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);
    av_log(NULL, AV_LOG_INFO, "\n");
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}

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static void ffprobe_show_program_version(WriterContext *w)
{
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    AVBPrint pbuf;
    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
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    writer_print_section_header(w, SECTION_ID_PROGRAM_VERSION);
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    print_str("version", FFMPEG_VERSION);
    print_fmt("copyright", "Copyright (c) %d-%d the FFmpeg developers",
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              program_birth_year, CONFIG_THIS_YEAR);
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    print_str("compiler_ident", CC_IDENT);
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    print_str("configuration", FFMPEG_CONFIGURATION);
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    writer_print_section_footer(w);
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    av_bprint_finalize(&pbuf, NULL);
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}

#define SHOW_LIB_VERSION(libname, LIBNAME)                              \
    do {                                                                \
        if (CONFIG_##LIBNAME) {                                         \
            unsigned int version = libname##_version();                 \
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            writer_print_section_header(w, SECTION_ID_LIBRARY_VERSION); \
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            print_str("name",    "lib" #libname);                       \
            print_int("major",   LIB##LIBNAME##_VERSION_MAJOR);         \
            print_int("minor",   LIB##LIBNAME##_VERSION_MINOR);         \
            print_int("micro",   LIB##LIBNAME##_VERSION_MICRO);         \
            print_int("version", version);                              \
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            print_str("ident",   LIB##LIBNAME##_IDENT);                 \
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            writer_print_section_footer(w);                             \
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        }                                                               \
    } while (0)

static void ffprobe_show_library_versions(WriterContext *w)
{
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    writer_print_section_header(w, SECTION_ID_LIBRARY_VERSIONS);
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    SHOW_LIB_VERSION(avutil,     AVUTIL);
    SHOW_LIB_VERSION(avcodec,    AVCODEC);
    SHOW_LIB_VERSION(avformat,   AVFORMAT);
    SHOW_LIB_VERSION(avdevice,   AVDEVICE);
    SHOW_LIB_VERSION(avfilter,   AVFILTER);
    SHOW_LIB_VERSION(swscale,    SWSCALE);
    SHOW_LIB_VERSION(swresample, SWRESAMPLE);
    SHOW_LIB_VERSION(postproc,   POSTPROC);
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    writer_print_section_footer(w);
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}

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#define PRINT_PIX_FMT_FLAG(flagname, name)                                \
    do {                                                                  \
        print_int(name, !!(pixdesc->flags & AV_PIX_FMT_FLAG_##flagname)); \
    } while (0)

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static void ffprobe_show_pixel_formats(WriterContext *w)
{
    const AVPixFmtDescriptor *pixdesc = NULL;
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    int i, n;
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    writer_print_section_header(w, SECTION_ID_PIXEL_FORMATS);
    while (pixdesc = av_pix_fmt_desc_next(pixdesc)) {
        writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT);
        print_str("name", pixdesc->name);
        print_int("nb_components", pixdesc->nb_components);
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        if ((pixdesc->nb_components >= 3) && !(pixdesc->flags & AV_PIX_FMT_FLAG_RGB)) {
            print_int    ("log2_chroma_w", pixdesc->log2_chroma_w);
            print_int    ("log2_chroma_h", pixdesc->log2_chroma_h);
        } else {
            print_str_opt("log2_chroma_w", "N/A");
            print_str_opt("log2_chroma_h", "N/A");
        }
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        n = av_get_bits_per_pixel(pixdesc);
        if (n) print_int    ("bits_per_pixel", n);
        else   print_str_opt("bits_per_pixel", "N/A");
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        if (do_show_pixel_format_flags) {
            writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_FLAGS);
            PRINT_PIX_FMT_FLAG(BE,        "big_endian");
            PRINT_PIX_FMT_FLAG(PAL,       "palette");
            PRINT_PIX_FMT_FLAG(BITSTREAM, "bitstream");
            PRINT_PIX_FMT_FLAG(HWACCEL,   "hwaccel");
            PRINT_PIX_FMT_FLAG(PLANAR,    "planar");
            PRINT_PIX_FMT_FLAG(RGB,       "rgb");
            PRINT_PIX_FMT_FLAG(PSEUDOPAL, "pseudopal");
            PRINT_PIX_FMT_FLAG(ALPHA,     "alpha");
            writer_print_section_footer(w);
        }
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        if (do_show_pixel_format_components && (pixdesc->nb_components > 0)) {
            writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_COMPONENTS);
            for (i = 0; i < pixdesc->nb_components; i++) {
                writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_COMPONENT);
                print_int("index", i + 1);
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                print_int("bit_depth", pixdesc->comp[i].depth);
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                writer_print_section_footer(w);
            }
            writer_print_section_footer(w);
        }
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        writer_print_section_footer(w);
    }
    writer_print_section_footer(w);
}

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static int opt_format(void *optctx, const char *opt, const char *arg)
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{
    iformat = av_find_input_format(arg);
    if (!iformat) {
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        av_log(NULL, AV_LOG_ERROR, "Unknown input format: %s\n", arg);
2770
        return AVERROR(EINVAL);
2771
    }
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    return 0;
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}

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static inline void mark_section_show_entries(SectionID section_id,
                                             int show_all_entries, AVDictionary *entries)
{
    struct section *section = &sections[section_id];

    section->show_all_entries = show_all_entries;
    if (show_all_entries) {
        SectionID *id;
        for (id = section->children_ids; *id != -1; id++)
            mark_section_show_entries(*id, show_all_entries, entries);
    } else {
        av_dict_copy(&section->entries_to_show, entries, 0);
    }
}

static int match_section(const char *section_name,
                         int show_all_entries, AVDictionary *entries)
{
    int i, ret = 0;

    for (i = 0; i < FF_ARRAY_ELEMS(sections); i++) {
        const struct section *section = &sections[i];
        if (!strcmp(section_name, section->name) ||
            (section->unique_name && !strcmp(section_name, section->unique_name))) {
            av_log(NULL, AV_LOG_DEBUG,
                   "'%s' matches section with unique name '%s'\n", section_name,
                   (char *)av_x_if_null(section->unique_name, section->name));
            ret++;
            mark_section_show_entries(section->id, show_all_entries, entries);
        }
    }
    return ret;
}

static int opt_show_entries(void *optctx, const char *opt, const char *arg)
{
    const char *p = arg;
    int ret = 0;

    while (*p) {
        AVDictionary *entries = NULL;
        char *section_name = av_get_token(&p, "=:");
        int show_all_entries = 0;

        if (!section_name) {
            av_log(NULL, AV_LOG_ERROR,
                   "Missing section name for option '%s'\n", opt);
            return AVERROR(EINVAL);
        }

        if (*p == '=') {
            p++;
            while (*p && *p != ':') {
                char *entry = av_get_token(&p, ",:");
                if (!entry)
                    break;
                av_log(NULL, AV_LOG_VERBOSE,
                       "Adding '%s' to the entries to show in section '%s'\n",
                       entry, section_name);
                av_dict_set(&entries, entry, "", AV_DICT_DONT_STRDUP_KEY);
                if (*p == ',')
                    p++;
            }
        } else {
            show_all_entries = 1;
        }

        ret = match_section(section_name, show_all_entries, entries);
        if (ret == 0) {
            av_log(NULL, AV_LOG_ERROR, "No match for section '%s'\n", section_name);
            ret = AVERROR(EINVAL);
        }
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        av_dict_free(&entries);
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        av_free(section_name);

        if (ret <= 0)
            break;
        if (*p)
            p++;
    }

    return ret;
}

2859
static int opt_show_format_entry(void *optctx, const char *opt, const char *arg)
2860
{
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    char *buf = av_asprintf("format=%s", arg);
    int ret;

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    if (!buf)
        return AVERROR(ENOMEM);

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    av_log(NULL, AV_LOG_WARNING,
           "Option '%s' is deprecated, use '-show_entries format=%s' instead\n",
           opt, arg);
    ret = opt_show_entries(optctx, opt, buf);
    av_free(buf);
    return ret;
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}

2875
static void opt_input_file(void *optctx, const char *arg)
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{
2877
    if (input_filename) {
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        av_log(NULL, AV_LOG_ERROR,
                "Argument '%s' provided as input filename, but '%s' was already specified.\n",
                arg, input_filename);
2881
        exit_program(1);
2882
    }
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    if (!strcmp(arg, "-"))
        arg = "pipe:";
    input_filename = arg;
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}

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static int opt_input_file_i(void *optctx, const char *opt, const char *arg)
{
    opt_input_file(optctx, arg);
    return 0;
}

2894
void show_help_default(const char *opt, const char *arg)
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{
2896
    av_log_set_callback(log_callback_help);
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    show_usage();
2898
    show_help_options(options, "Main options:", 0, 0, 0);
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    printf("\n");
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    show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
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}

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/**
 * Parse interval specification, according to the format:
 * INTERVAL ::= [START|+START_OFFSET][%[END|+END_OFFSET]]
 * INTERVALS ::= INTERVAL[,INTERVALS]
*/
static int parse_read_interval(const char *interval_spec,
                               ReadInterval *interval)
{
    int ret = 0;
    char *next, *p, *spec = av_strdup(interval_spec);
    if (!spec)
        return AVERROR(ENOMEM);

    if (!*spec) {
        av_log(NULL, AV_LOG_ERROR, "Invalid empty interval specification\n");
        ret = AVERROR(EINVAL);
        goto end;
    }

    p = spec;
    next = strchr(spec, '%');
    if (next)
        *next++ = 0;

    /* parse first part */
    if (*p) {
        interval->has_start = 1;

        if (*p == '+') {
            interval->start_is_offset = 1;
            p++;
        } else {
            interval->start_is_offset = 0;
        }

        ret = av_parse_time(&interval->start, p, 1);
        if (ret < 0) {
            av_log(NULL, AV_LOG_ERROR, "Invalid interval start specification '%s'\n", p);
            goto end;
        }
    } else {
        interval->has_start = 0;
    }

    /* parse second part */
    p = next;
    if (p && *p) {
        int64_t us;
        interval->has_end = 1;

        if (*p == '+') {
            interval->end_is_offset = 1;
            p++;
        } else {
            interval->end_is_offset = 0;
        }

        if (interval->end_is_offset && *p == '#') {
            long long int lli;
            char *tail;
            interval->duration_frames = 1;
            p++;
            lli = strtoll(p, &tail, 10);
            if (*tail || lli < 0) {
                av_log(NULL, AV_LOG_ERROR,
                       "Invalid or negative value '%s' for duration number of frames\n", p);
                goto end;
            }
            interval->end = lli;
        } else {
            ret = av_parse_time(&us, p, 1);
            if (ret < 0) {
                av_log(NULL, AV_LOG_ERROR, "Invalid interval end/duration specification '%s'\n", p);
                goto end;
            }
            interval->end = us;
        }
    } else {
        interval->has_end = 0;
    }

end:
    av_free(spec);
    return ret;
}

static int parse_read_intervals(const char *intervals_spec)
{
    int ret, n, i;
    char *p, *spec = av_strdup(intervals_spec);
    if (!spec)
        return AVERROR(ENOMEM);

    /* preparse specification, get number of intervals */
    for (n = 0, p = spec; *p; p++)
        if (*p == ',')
            n++;
    n++;

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    read_intervals = av_malloc_array(n, sizeof(*read_intervals));
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    if (!read_intervals) {
        ret = AVERROR(ENOMEM);
        goto end;
    }
    read_intervals_nb = n;

    /* parse intervals */
    p = spec;
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    for (i = 0; p; i++) {
        char *next;

        av_assert0(i < read_intervals_nb);
        next = strchr(p, ',');
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        if (next)
            *next++ = 0;

        read_intervals[i].id = i;
        ret = parse_read_interval(p, &read_intervals[i]);
        if (ret < 0) {
            av_log(NULL, AV_LOG_ERROR, "Error parsing read interval #%d '%s'\n",
                   i, p);
            goto end;
        }
        av_log(NULL, AV_LOG_VERBOSE, "Parsed log interval ");
        log_read_interval(&read_intervals[i], NULL, AV_LOG_VERBOSE);
        p = next;
    }
    av_assert0(i == read_intervals_nb);

end:
    av_free(spec);
    return ret;
}

static int opt_read_intervals(void *optctx, const char *opt, const char *arg)
{
    return parse_read_intervals(arg);
}

3043
static int opt_pretty(void *optctx, const char *opt, const char *arg)
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{
    show_value_unit              = 1;
    use_value_prefix             = 1;
    use_byte_value_binary_prefix = 1;
    use_value_sexagesimal_format = 1;
3049
    return 0;
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}

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static void print_section(SectionID id, int level)
{
    const SectionID *pid;
    const struct section *section = &sections[id];
    printf("%c%c%c",
           section->flags & SECTION_FLAG_IS_WRAPPER           ? 'W' : '.',
           section->flags & SECTION_FLAG_IS_ARRAY             ? 'A' : '.',
           section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS  ? 'V' : '.');
    printf("%*c  %s", level * 4, ' ', section->name);
    if (section->unique_name)
        printf("/%s", section->unique_name);
    printf("\n");

    for (pid = section->children_ids; *pid != -1; pid++)
        print_section(*pid, level+1);
}

static int opt_sections(void *optctx, const char *opt, const char *arg)
{
    printf("Sections:\n"
           "W.. = Section is a wrapper (contains other sections, no local entries)\n"
           ".A. = Section contains an array of elements of the same type\n"
           "..V = Section may contain a variable number of fields with variable keys\n"
           "FLAGS NAME/UNIQUE_NAME\n"
           "---\n");
    print_section(SECTION_ID_ROOT, 0);
    return 0;
}

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static int opt_show_versions(const char *opt, const char *arg)
{
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    mark_section_show_entries(SECTION_ID_PROGRAM_VERSION, 1, NULL);
    mark_section_show_entries(SECTION_ID_LIBRARY_VERSION, 1, NULL);
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    return 0;
}

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#define DEFINE_OPT_SHOW_SECTION(section, target_section_id)             \
    static int opt_show_##section(const char *opt, const char *arg)     \
    {                                                                   \
        mark_section_show_entries(SECTION_ID_##target_section_id, 1, NULL); \
        return 0;                                                       \
    }

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DEFINE_OPT_SHOW_SECTION(chapters,         CHAPTERS)
DEFINE_OPT_SHOW_SECTION(error,            ERROR)
DEFINE_OPT_SHOW_SECTION(format,           FORMAT)
DEFINE_OPT_SHOW_SECTION(frames,           FRAMES)
DEFINE_OPT_SHOW_SECTION(library_versions, LIBRARY_VERSIONS)
DEFINE_OPT_SHOW_SECTION(packets,          PACKETS)
DEFINE_OPT_SHOW_SECTION(pixel_formats,    PIXEL_FORMATS)
DEFINE_OPT_SHOW_SECTION(program_version,  PROGRAM_VERSION)
DEFINE_OPT_SHOW_SECTION(streams,          STREAMS)
DEFINE_OPT_SHOW_SECTION(programs,         PROGRAMS)
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static const OptionDef real_options[] = {
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3107
#include "cmdutils_common_opts.h"
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    { "f", HAS_ARG, {.func_arg = opt_format}, "force format", "format" },
    { "unit", OPT_BOOL, {&show_value_unit}, "show unit of the displayed values" },
    { "prefix", OPT_BOOL, {&use_value_prefix}, "use SI prefixes for the displayed values" },
    { "byte_binary_prefix", OPT_BOOL, {&use_byte_value_binary_prefix},
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      "use binary prefixes for byte units" },
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    { "sexagesimal", OPT_BOOL,  {&use_value_sexagesimal_format},
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3114
      "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
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    { "pretty", 0, {.func_arg = opt_pretty},
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      "prettify the format of displayed values, make it more human readable" },
3117
    { "print_format", OPT_STRING | HAS_ARG, {(void*)&print_format},
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      "set the output printing format (available formats are: default, compact, csv, flat, ini, json, xml)", "format" },
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    { "of", OPT_STRING | HAS_ARG, {(void*)&print_format}, "alias for -print_format", "format" },
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    { "select_streams", OPT_STRING | HAS_ARG, {(void*)&stream_specifier}, "select the specified streams", "stream_specifier" },
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    { "sections", OPT_EXIT, {.func_arg = opt_sections}, "print sections structure and section information, and exit" },
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    { "show_data",    OPT_BOOL, {(void*)&do_show_data}, "show packets data" },
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    { "show_data_hash", OPT_STRING | HAS_ARG, {(void*)&show_data_hash}, "show packets data hash" },
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    { "show_error",   0, {(void*)&opt_show_error},  "show probing error" },
    { "show_format",  0, {(void*)&opt_show_format}, "show format/container info" },
    { "show_frames",  0, {(void*)&opt_show_frames}, "show frames info" },
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    { "show_format_entry", HAS_ARG, {.func_arg = opt_show_format_entry},
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      "show a particular entry from the format/container info", "entry" },
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    { "show_entries", HAS_ARG, {.func_arg = opt_show_entries},
      "show a set of specified entries", "entry_list" },
    { "show_packets", 0, {(void*)&opt_show_packets}, "show packets info" },
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    { "show_programs", 0, {(void*)&opt_show_programs}, "show programs info" },
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    { "show_streams", 0, {(void*)&opt_show_streams}, "show streams info" },
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    { "show_chapters", 0, {(void*)&opt_show_chapters}, "show chapters info" },
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    { "count_frames", OPT_BOOL, {(void*)&do_count_frames}, "count the number of frames per stream" },
    { "count_packets", OPT_BOOL, {(void*)&do_count_packets}, "count the number of packets per stream" },
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    { "show_program_version",  0, {(void*)&opt_show_program_version},  "show ffprobe version" },
    { "show_library_versions", 0, {(void*)&opt_show_library_versions}, "show library versions" },
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    { "show_versions",         0, {(void*)&opt_show_versions}, "show program and library versions" },
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    { "show_pixel_formats", 0, {(void*)&opt_show_pixel_formats}, "show pixel format descriptions" },
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    { "show_private_data", OPT_BOOL, {(void*)&show_private_data}, "show private data" },
    { "private",           OPT_BOOL, {(void*)&show_private_data}, "same as show_private_data" },
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    { "bitexact", OPT_BOOL, {&do_bitexact}, "force bitexact output" },
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    { "read_intervals", HAS_ARG, {.func_arg = opt_read_intervals}, "set read intervals", "read_intervals" },
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    { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {.func_arg = opt_default}, "generic catch all option", "" },
3146
    { "i", HAS_ARG, {.func_arg = opt_input_file_i}, "read specified file", "input_file"},
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    { NULL, },
};

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static inline int check_section_show_entries(int section_id)
{
    int *id;
    struct section *section = &sections[section_id];
    if (sections[section_id].show_all_entries || sections[section_id].entries_to_show)
        return 1;
    for (id = section->children_ids; *id != -1; id++)
        if (check_section_show_entries(*id))
            return 1;
    return 0;
}

#define SET_DO_SHOW(id, varname) do {                                   \
        if (check_section_show_entries(SECTION_ID_##id))                \
            do_show_##varname = 1;                                      \
    } while (0)

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int main(int argc, char **argv)
{
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    const Writer *w;
    WriterContext *wctx;
    char *buf;
    char *w_name = NULL, *w_args = NULL;
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    int ret, i;
3174

3175
    av_log_set_flags(AV_LOG_SKIP_REPEATED);
3176
    register_exit(ffprobe_cleanup);
3177

3178
    options = real_options;
3179
    parse_loglevel(argc, argv, options);
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3180
    av_register_all();
3181
    avformat_network_init();
3182
    init_opts();
3183 3184 3185
#if CONFIG_AVDEVICE
    avdevice_register_all();
#endif
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3186

3187
    show_banner(argc, argv, options);
3188
    parse_options(NULL, argc, argv, options, opt_input_file);
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3189

3190
    /* mark things to show, based on -show_entries */
3191
    SET_DO_SHOW(CHAPTERS, chapters);
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    SET_DO_SHOW(ERROR, error);
    SET_DO_SHOW(FORMAT, format);
    SET_DO_SHOW(FRAMES, frames);
    SET_DO_SHOW(LIBRARY_VERSIONS, library_versions);
    SET_DO_SHOW(PACKETS, packets);
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    SET_DO_SHOW(PIXEL_FORMATS, pixel_formats);
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    SET_DO_SHOW(PIXEL_FORMAT_FLAGS, pixel_format_flags);
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    SET_DO_SHOW(PIXEL_FORMAT_COMPONENTS, pixel_format_components);
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    SET_DO_SHOW(PROGRAM_VERSION, program_version);
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    SET_DO_SHOW(PROGRAMS, programs);
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    SET_DO_SHOW(STREAMS, streams);
    SET_DO_SHOW(STREAM_DISPOSITION, stream_disposition);
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    SET_DO_SHOW(PROGRAM_STREAM_DISPOSITION, stream_disposition);
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    SET_DO_SHOW(CHAPTER_TAGS, chapter_tags);
    SET_DO_SHOW(FORMAT_TAGS, format_tags);
    SET_DO_SHOW(FRAME_TAGS, frame_tags);
    SET_DO_SHOW(PROGRAM_TAGS, program_tags);
    SET_DO_SHOW(STREAM_TAGS, stream_tags);
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    SET_DO_SHOW(PACKET_TAGS, packet_tags);
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    if (do_bitexact && (do_show_program_version || do_show_library_versions)) {
        av_log(NULL, AV_LOG_ERROR,
               "-bitexact and -show_program_version or -show_library_versions "
               "options are incompatible\n");
        ret = AVERROR(EINVAL);
        goto end;
    }

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    writer_register_all();

    if (!print_format)
        print_format = av_strdup("default");
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    if (!print_format) {
        ret = AVERROR(ENOMEM);
        goto end;
    }
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    w_name = av_strtok(print_format, "=", &buf);
    w_args = buf;

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    if (show_data_hash) {
        if ((ret = av_hash_alloc(&hash, show_data_hash)) < 0) {
            if (ret == AVERROR(EINVAL)) {
                const char *n;
                av_log(NULL, AV_LOG_ERROR,
                       "Unknown hash algorithm '%s'\nKnown algorithms:",
                       show_data_hash);
                for (i = 0; (n = av_hash_names(i)); i++)
                    av_log(NULL, AV_LOG_ERROR, " %s", n);
                av_log(NULL, AV_LOG_ERROR, "\n");
            }
            goto end;
        }
    }

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    w = writer_get_by_name(w_name);
    if (!w) {
        av_log(NULL, AV_LOG_ERROR, "Unknown output format with name '%s'\n", w_name);
        ret = AVERROR(EINVAL);
        goto end;
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    }

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    if ((ret = writer_open(&wctx, w, w_args,
                           sections, FF_ARRAY_ELEMS(sections))) >= 0) {
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        if (w == &xml_writer)
            wctx->string_validation_utf8_flags |= AV_UTF8_FLAG_EXCLUDE_XML_INVALID_CONTROL_CODES;

3259
        writer_print_section_header(wctx, SECTION_ID_ROOT);
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        if (do_show_program_version)
            ffprobe_show_program_version(wctx);
        if (do_show_library_versions)
            ffprobe_show_library_versions(wctx);
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        if (do_show_pixel_formats)
            ffprobe_show_pixel_formats(wctx);
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        if (!input_filename &&
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            ((do_show_format || do_show_programs || do_show_streams || do_show_chapters || do_show_packets || do_show_error) ||
3270
             (!do_show_program_version && !do_show_library_versions && !do_show_pixel_formats))) {
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            show_usage();
            av_log(NULL, AV_LOG_ERROR, "You have to specify one input file.\n");
            av_log(NULL, AV_LOG_ERROR, "Use -h to get full help or, even better, run 'man %s'.\n", program_name);
            ret = AVERROR(EINVAL);
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        } else if (input_filename) {
3276
            ret = probe_file(wctx, input_filename);
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            if (ret < 0 && do_show_error)
                show_error(wctx, ret);
        }
3280

3281
        writer_print_section_footer(wctx);
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        writer_close(&wctx);
    }
3284

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end:
    av_freep(&print_format);
3287
    av_freep(&read_intervals);
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    av_hash_freep(&hash);
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    uninit_opts();
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    for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)
        av_dict_free(&(sections[i].entries_to_show));
3293

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    avformat_network_deinit();

3296
    return ret < 0;
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}