CoCalc -- ffprobe.c

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/*
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 * Copyright (c) 2007-2010 Stefano Sabatini
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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/**
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 * @file
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 * simple media prober based on the FFmpeg libraries
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 */
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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"
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#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"
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#include "libswresample/swresample.h"
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#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;
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static int do_count_packets = 0;
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static int do_read_frames  = 0;
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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;
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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;
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static int do_show_format_tags = 0;
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static int do_show_frame_tags = 0;
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static int do_show_program_tags = 0;
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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;
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static int use_value_prefix             = 0;
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static int use_byte_value_binary_prefix = 0;
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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
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    int64_t start, end; ///< start, end in second/AV_TIME_BASE units
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    int has_start, has_end;
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    int start_is_offset, end_is_offset;
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    int duration_frames;
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} ReadInterval;
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static ReadInterval *read_intervals;
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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;
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#define SECTION_FLAG_IS_WRAPPER      1 ///< the section only contains other sections, but has no data at its own level
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#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.
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                                           ///  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
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    AVDictionary *entries_to_show;
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    int show_all_entries;
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};
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typedef enum {
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    SECTION_ID_NONE = -1,
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    SECTION_ID_CHAPTER,
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    SECTION_ID_CHAPTER_TAGS,
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    SECTION_ID_CHAPTERS,
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    SECTION_ID_ERROR,
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    SECTION_ID_FORMAT,
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    SECTION_ID_FORMAT_TAGS,
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    SECTION_ID_FRAME,
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    SECTION_ID_FRAMES,
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    SECTION_ID_FRAME_TAGS,
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    SECTION_ID_FRAME_SIDE_DATA_LIST,
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    SECTION_ID_FRAME_SIDE_DATA,
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    SECTION_ID_LIBRARY_VERSION,
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    SECTION_ID_LIBRARY_VERSIONS,
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    SECTION_ID_PACKET,
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    SECTION_ID_PACKET_TAGS,
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    SECTION_ID_PACKETS,
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    SECTION_ID_PACKETS_AND_FRAMES,
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    SECTION_ID_PACKET_SIDE_DATA_LIST,
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    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,
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    SECTION_ID_PIXEL_FORMAT_COMPONENTS,
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    SECTION_ID_PIXEL_FORMATS,
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    SECTION_ID_PROGRAM_STREAM_DISPOSITION,
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    SECTION_ID_PROGRAM_STREAM_TAGS,
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    SECTION_ID_PROGRAM,
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    SECTION_ID_PROGRAM_STREAMS,
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    SECTION_ID_PROGRAM_STREAM,
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    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,
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    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,
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    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 } },
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    [SECTION_ID_CHAPTER] =            { SECTION_ID_CHAPTER, "chapter", 0, { SECTION_ID_CHAPTER_TAGS, -1 } },
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    [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 } },
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    [SECTION_ID_FORMAT] =             { SECTION_ID_FORMAT, "format", 0, { SECTION_ID_FORMAT_TAGS, -1 } },
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    [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 } },
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    [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 } },
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    [SECTION_ID_LIBRARY_VERSION] =    { SECTION_ID_LIBRARY_VERSION, "library_version", 0, { -1 } },
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    [SECTION_ID_PACKETS] =            { SECTION_ID_PACKETS, "packets", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PACKET, -1} },
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    [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 } },
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    [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 } },
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    [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" },
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    [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" },
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    [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" },
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    [SECTION_ID_PROGRAM] =                    { SECTION_ID_PROGRAM, "program", 0, { SECTION_ID_PROGRAM_TAGS, SECTION_ID_PROGRAM_STREAMS, -1 } },
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    [SECTION_ID_PROGRAM_STREAMS] =            { SECTION_ID_PROGRAM_STREAMS, "streams", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PROGRAM_STREAM, -1 }, .unique_name = "program_streams" },
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    [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" },
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    [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,
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                                          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" },
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    [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 } },
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    [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 */
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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 {
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    double bin_val;
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    double dec_val;
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    const char *bin_str;
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    const char *dec_str;
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} si_prefixes[] = {
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    { 1.0, 1.0, "", "" },
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    { 1.024e3, 1e3, "Ki", "K" },
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    { 1.048576e6, 1e6, "Mi", "M" },
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    { 1.073741824e9, 1e9, "Gi", "G" },
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    { 1.099511627776e12, 1e12, "Ti", "T" },
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    { 1.125899906842624e15, 1e15, "Pi", "P" },
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};
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static const char unit_second_str[]         = "s"    ;
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static const char unit_hertz_str[]          = "Hz"   ;
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static const char unit_byte_str[]           = "byte" ;
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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;
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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;
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    for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)
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        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;
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};
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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;
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    if (uv.unit == unit_second_str) {
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        vald = uv.val.d;
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        show_float = 1;
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    } else {
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        vald = vali = uv.val.i;
268
    }
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    if (uv.unit == unit_second_str && use_value_sexagesimal_format) {
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        double secs;
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        int hours, mins;
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        secs  = vald;
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        mins  = (int)secs / 60;
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        secs  = secs - mins * 60;
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        hours = mins / 60;
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        mins %= 60;
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        snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
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    } else {
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        const char *prefix_string = "";
281

282
        if (use_value_prefix && vald > 1) {
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            long long int index;
284

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            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);
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                vald /= si_prefixes[index].bin_val;
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                prefix_string = si_prefixes[index].bin_str;
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            } else {
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                index = (long long int) (log10(vald)) / 3;
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                index = av_clip(index, 0, FF_ARRAY_ELEMS(si_prefixes) - 1);
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                vald /= si_prefixes[index].dec_val;
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                prefix_string = si_prefixes[index].dec_str;
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            }
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            vali = vald;
297
        }
298

299
        if (show_float || (use_value_prefix && vald != (long long int)vald))
300
            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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    }
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    return buf;
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}
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/* WRITERS API */
311

312
typedef struct WriterContext WriterContext;
313

314
#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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317
typedef enum {
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    WRITER_STRING_VALIDATION_FAIL,
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    WRITER_STRING_VALIDATION_REPLACE,
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    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
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    const char *name;
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329
    int  (*init)  (WriterContext *wctx);
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    void (*uninit)(WriterContext *wctx);
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332
    void (*print_section_header)(WriterContext *wctx);
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    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_*
338
} Writer;
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340
#define SECTION_MAX_NB_LEVELS 10
341

342
struct WriterContext {
343
    const AVClass *class;           ///< class of the writer
344
    const Writer *writer;           ///< the Writer of which this is an instance
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    char *name;                     ///< name of this writer instance
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    void *priv;                     ///< private data for use by the filter
347

348
    const struct section *sections; ///< array containing all sections
349
    int nb_sections;                ///< number of sections
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351
    int level;                      ///< current level, starting from 0
352

353
    /** number of the item printed in the given section, starting from 0 */
354
    unsigned int nb_item[SECTION_MAX_NB_LEVELS];
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356
    /** section per each level */
357
    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,
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                                                  ///  used by various writers
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361
    unsigned int nb_section_packet; ///< number of the packet section in case we are in "packets_and_frames" section
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    unsigned int nb_section_frame;  ///< number of the frame  section in case we are in "packets_and_frames" section
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    unsigned int nb_section_packet_frame; ///< nb_section_packet or nb_section_frame according if is_packets_and_frames
364

365
    int string_validation;
366
    char *string_validation_replacement;
367
    unsigned int string_validation_utf8_flags;
368
};
369

370
static const char *writer_get_name(void *p)
371
{
372
    WriterContext *wctx = p;
373
    return wctx->writer->name;
374
}
375

376
#define OFFSET(x) offsetof(WriterContext, x)
377

378
static const AVOption writer_options[] = {
379
    { "string_validation", "set string validation mode",
380
      OFFSET(string_validation), AV_OPT_TYPE_INT, {.i64=WRITER_STRING_VALIDATION_REPLACE}, 0, WRITER_STRING_VALIDATION_NB-1, .unit = "sv" },
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    { "sv", "set string validation mode",
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      OFFSET(string_validation), AV_OPT_TYPE_INT, {.i64=WRITER_STRING_VALIDATION_REPLACE}, 0, WRITER_STRING_VALIDATION_NB-1, .unit = "sv" },
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    { "ignore",  NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_IGNORE},  .unit = "sv" },
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    { "replace", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_REPLACE}, .unit = "sv" },
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    { "fail",    NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_FAIL},    .unit = "sv" },
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    { "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 }
389
};
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391
static void *writer_child_next(void *obj, void *prev)
392
{
393
    WriterContext *ctx = obj;
394
    if (!prev && ctx->writer && ctx->writer->priv_class && ctx->priv)
395
        return ctx->priv;
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    return NULL;
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}
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399
static const AVClass writer_class = {
400
    .class_name = "Writer",
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    .item_name  = writer_get_name,
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    .option     = writer_options,
403
    .version    = LIBAVUTIL_VERSION_INT,
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    .child_next = writer_child_next,
405
};
406

407
static void writer_close(WriterContext **wctx)
408
{
409
    int i;
410

411
    if (!*wctx)
412
        return;
413

414
    if ((*wctx)->writer->uninit)
415
        (*wctx)->writer->uninit(*wctx);
416
    for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
417
        av_bprint_finalize(&(*wctx)->section_pbuf[i], NULL);
418
    if ((*wctx)->writer->priv_class)
419
        av_opt_free((*wctx)->priv);
420
    av_freep(&((*wctx)->priv));
421
    av_opt_free(*wctx);
422
    av_freep(wctx);
423
}
424

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

433

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

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

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

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

455
    av_opt_set_defaults(*wctx);
456

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

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

468
        if ((ret = av_dict_parse_string(&opts, args, "=", ":", 0)) < 0) {
469
            av_log(*wctx, AV_LOG_ERROR, "Failed to parse option string '%s' provided to writer context\n", args);
470
            av_dict_free(&opts);
471
            goto fail;
472
        }
473

474
        while ((opt = av_dict_get(opts, "", opt, AV_DICT_IGNORE_SUFFIX))) {
475
            if ((ret = av_opt_set(*wctx, opt->key, opt->value, AV_OPT_SEARCH_CHILDREN)) < 0) {
476
                av_log(*wctx, AV_LOG_ERROR, "Failed to set option '%s' with value '%s' provided to writer context\n",
477
                       opt->key, opt->value);
478
                av_dict_free(&opts);
479
                goto fail;
480
            }
481
        }
482

483
        av_dict_free(&opts);
484
    }
485

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

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

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

514
    return 0;
515

516
fail:
517
    writer_close(wctx);
518
    return ret;
519
}
520

521
static inline void writer_print_section_header(WriterContext *wctx,
522
                                               int section_id)
523
{
524
    int parent_section_id;
525
    wctx->level++;
526
    av_assert0(wctx->level < SECTION_MAX_NB_LEVELS);
527
    parent_section_id = wctx->level ?
528
        (wctx->section[wctx->level-1])->id : SECTION_ID_NONE;
529

530
    wctx->nb_item[wctx->level] = 0;
531
    wctx->section[wctx->level] = &wctx->sections[section_id];
532

533
    if (section_id == SECTION_ID_PACKETS_AND_FRAMES) {
534
        wctx->nb_section_packet = wctx->nb_section_frame =
535
        wctx->nb_section_packet_frame = 0;
536
    } else if (parent_section_id == SECTION_ID_PACKETS_AND_FRAMES) {
537
        wctx->nb_section_packet_frame = section_id == SECTION_ID_PACKET ?
538
            wctx->nb_section_packet : wctx->nb_section_frame;
539
    }
540

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

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

551
    if (parent_section_id != SECTION_ID_NONE)
552
        wctx->nb_item[wctx->level-1]++;
553
    if (parent_section_id == SECTION_ID_PACKETS_AND_FRAMES) {
554
        if (section_id == SECTION_ID_PACKET) wctx->nb_section_packet++;
555
        else                                     wctx->nb_section_frame++;
556
    }
557
    if (wctx->writer->print_section_footer)
558
        wctx->writer->print_section_footer(wctx);
559
    wctx->level--;
560
}
561

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

567
    if (section->show_all_entries || av_dict_get(section->entries_to_show, key, NULL, 0)) {
568
        wctx->writer->print_integer(wctx, key, val);
569
        wctx->nb_item[wctx->level]++;
570
    }
571
}
572

573
static inline int validate_string(WriterContext *wctx, char **dstp, const char *src)
574
{
575
    const uint8_t *p, *endp;
576
    AVBPrint dstbuf;
577
    int invalid_chars_nb = 0, ret = 0;
578

579
    av_bprint_init(&dstbuf, 0, AV_BPRINT_SIZE_UNLIMITED);
580

581
    endp = src + strlen(src);
582
    for (p = (uint8_t *)src; *p;) {
583
        uint32_t code;
584
        int invalid = 0;
585
        const uint8_t *p0 = p;
586

587
        if (av_utf8_decode(&code, &p, endp, wctx->string_validation_utf8_flags) < 0) {
588
            AVBPrint bp;
589
            av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC);
590
            bprint_bytes(&bp, p0, p-p0);
591
            av_log(wctx, AV_LOG_DEBUG,
592
                   "Invalid UTF-8 sequence %s found in string '%s'\n", bp.str, src);
593
            invalid = 1;
594
        }
595

596
        if (invalid) {
597
            invalid_chars_nb++;
598

599
            switch (wctx->string_validation) {
600
            case WRITER_STRING_VALIDATION_FAIL:
601
                av_log(wctx, AV_LOG_ERROR,
602
                       "Invalid UTF-8 sequence found in string '%s'\n", src);
603
                ret = AVERROR_INVALIDDATA;
604
                goto end;
605
                break;
606

607
            case WRITER_STRING_VALIDATION_REPLACE:
608
                av_bprintf(&dstbuf, "%s", wctx->string_validation_replacement);
609
                break;
610
            }
611
        }
612

613
        if (!invalid || wctx->string_validation == WRITER_STRING_VALIDATION_IGNORE)
614
            av_bprint_append_data(&dstbuf, p0, p-p0);
615
    }
616

617
    if (invalid_chars_nb && wctx->string_validation == WRITER_STRING_VALIDATION_REPLACE) {
618
        av_log(wctx, AV_LOG_WARNING,
619
               "%d invalid UTF-8 sequence(s) found in string '%s', replaced with '%s'\n",
620
               invalid_chars_nb, src, wctx->string_validation_replacement);
621
    }
622

623
end:
624
    av_bprint_finalize(&dstbuf, dstp);
625
    return ret;
626
}
627

628
#define PRINT_STRING_OPT      1
629
#define PRINT_STRING_VALIDATE 2
630

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

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

641
    if (section->show_all_entries || av_dict_get(section->entries_to_show, key, NULL, 0)) {
642
        if (flags & PRINT_STRING_VALIDATE) {
643
            char *key1 = NULL, *val1 = NULL;
644
            ret = validate_string(wctx, &key1, key);
645
            if (ret < 0) goto end;
646
            ret = validate_string(wctx, &val1, val);
647
            if (ret < 0) goto end;
648
            wctx->writer->print_string(wctx, key1, val1);
649
        end:
650
            if (ret < 0) {
651
                av_log(wctx, AV_LOG_ERROR,
652
                       "Invalid key=value string combination %s=%s in section %s\n",
653
                       key, val, section->unique_name);
654
            }
655
            av_free(key1);
656
            av_free(val1);
657
        } else {
658
            wctx->writer->print_string(wctx, key, val);
659
        }
660

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

664
    return ret;
665
}
666

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

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

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

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

702
static void writer_print_data(WriterContext *wctx, const char *name,
703
                              uint8_t *data, int size)
704
{
705
    AVBPrint bp;
706
    int offset = 0, l, i;
707

708
    av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED);
709
    av_bprintf(&bp, "\n");
710
    while (size) {
711
        av_bprintf(&bp, "%08x: ", offset);
712
        l = FFMIN(size, 16);
713
        for (i = 0; i < l; i++) {
714
            av_bprintf(&bp, "%02x", data[i]);
715
            if (i & 1)
716
                av_bprintf(&bp, " ");
717
        }
718
        av_bprint_chars(&bp, ' ', 41 - 2 * i - i / 2);
719
        for (i = 0; i < l; i++)
720
            av_bprint_chars(&bp, data[i] - 32U < 95 ? data[i] : '.', 1);
721
        av_bprintf(&bp, "\n");
722
        offset += l;
723
        data   += l;
724
        size   -= l;
725
    }
726
    writer_print_string(wctx, name, bp.str, 0);
727
    av_bprint_finalize(&bp, NULL);
728
}
729

730
static void writer_print_data_hash(WriterContext *wctx, const char *name,
731
                                   uint8_t *data, int size)
732
{
733
    char *p, buf[AV_HASH_MAX_SIZE * 2 + 64] = { 0 };
734

735
    if (!hash)
736
        return;
737
    av_hash_init(hash);
738
    av_hash_update(hash, data, size);
739
    snprintf(buf, sizeof(buf), "%s:", av_hash_get_name(hash));
740
    p = buf + strlen(buf);
741
    av_hash_final_hex(hash, p, buf + sizeof(buf) - p);
742
    writer_print_string(wctx, name, buf, 0);
743
}
744

745
static void writer_print_integers(WriterContext *wctx, const char *name,
746
                                  uint8_t *data, int size, const char *format,
747
                                  int columns, int bytes, int offset_add)
748
{
749
    AVBPrint bp;
750
    int offset = 0, l, i;
751

752
    av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED);
753
    av_bprintf(&bp, "\n");
754
    while (size) {
755
        av_bprintf(&bp, "%08x: ", offset);
756
        l = FFMIN(size, columns);
757
        for (i = 0; i < l; i++) {
758
            if      (bytes == 1) av_bprintf(&bp, format, *data);
759
            else if (bytes == 2) av_bprintf(&bp, format, AV_RN16(data));
760
            else if (bytes == 4) av_bprintf(&bp, format, AV_RN32(data));
761
            data += bytes;
762
            size --;
763
        }
764
        av_bprintf(&bp, "\n");
765
        offset += offset_add;
766
    }
767
    writer_print_string(wctx, name, bp.str, 0);
768
    av_bprint_finalize(&bp, NULL);
769
}
770

771
#define MAX_REGISTERED_WRITERS_NB 64
772

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

775
static int writer_register(const Writer *writer)
776
{
777
    static int next_registered_writer_idx = 0;
778

779
    if (next_registered_writer_idx == MAX_REGISTERED_WRITERS_NB)
780
        return AVERROR(ENOMEM);
781

782
    registered_writers[next_registered_writer_idx++] = writer;
783
    return 0;
784
}
785

786
static const Writer *writer_get_by_name(const char *name)
787
{
788
    int i;
789

790
    for (i = 0; registered_writers[i]; i++)
791
        if (!strcmp(registered_writers[i]->name, name))
792
            return registered_writers[i];
793

794
    return NULL;
795
}
796

797

798
/* WRITERS */
799

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

811
/* Default output */
812

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

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

823
static const AVOption default_options[] = {
824
    { "noprint_wrappers", "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
825
    { "nw",               "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
826
    { "nokey",          "force no key printing",     OFFSET(nokey),          AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
827
    { "nk",             "force no key printing",     OFFSET(nokey),          AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
828
    {NULL},
829
};
830

831
DEFINE_WRITER_CLASS(default);
832

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

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

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

861
    if (def->noprint_wrappers || def->nested_section[wctx->level])
862
        return;
863

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

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

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

877
    if (!(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
878
        printf("[/%s]\n", upcase_string(buf, sizeof(buf), section->name));
879
}
880

881
static void default_print_str(WriterContext *wctx, const char *key, const char *value)
882
{
883
    DefaultContext *def = wctx->priv;
884

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

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

894
    if (!def->nokey)
895
        printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
896
    printf("%lld\n", value);
897
}
898

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

910
/* Compact output */
911

912
/**
913
 * Apply C-language-like string escaping.
914
 */
915
static const char *c_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
916
{
917
    const char *p;
918

919
    for (p = src; *p; p++) {
920
        switch (*p) {
921
        case '\b': av_bprintf(dst, "%s", "\\b");  break;
922
        case '\f': av_bprintf(dst, "%s", "\\f");  break;
923
        case '\n': av_bprintf(dst, "%s", "\\n");  break;
924
        case '\r': av_bprintf(dst, "%s", "\\r");  break;
925
        case '\\': av_bprintf(dst, "%s", "\\\\"); break;
926
        default:
927
            if (*p == sep)
928
                av_bprint_chars(dst, '\\', 1);
929
            av_bprint_chars(dst, *p, 1);
930
        }
931
    }
932
    return dst->str;
933
}
934

935
/**
936
 * Quote fields containing special characters, check RFC4180.
937
 */
938
static const char *csv_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
939
{
940
    char meta_chars[] = { sep, '"', '\n', '\r', '\0' };
941
    int needs_quoting = !!src[strcspn(src, meta_chars)];
942

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

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

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

961
typedef struct CompactContext {
962
    const AVClass *class;
963
    char *item_sep_str;
964
    char item_sep;
965
    int nokey;
966
    int print_section;
967
    char *escape_mode_str;
968
    const char * (*escape_str)(AVBPrint *dst, const char *src, const char sep, void *log_ctx);
969
    int nested_section[SECTION_MAX_NB_LEVELS];
970
    int has_nested_elems[SECTION_MAX_NB_LEVELS];
971
    int terminate_line[SECTION_MAX_NB_LEVELS];
972
} CompactContext;
973

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

977
static const AVOption compact_options[]= {
978
    {"item_sep", "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str="|"},  CHAR_MIN, CHAR_MAX },
979
    {"s",        "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str="|"},  CHAR_MIN, CHAR_MAX },
980
    {"nokey",    "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=0},    0,        1        },
981
    {"nk",       "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=0},    0,        1        },
982
    {"escape",   "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"},  CHAR_MIN, CHAR_MAX },
983
    {"e",        "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"},  CHAR_MIN, CHAR_MAX },
984
    {"print_section", "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
985
    {"p",             "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
986
    {NULL},
987
};
988

989
DEFINE_WRITER_CLASS(compact);
990

991
static av_cold int compact_init(WriterContext *wctx)
992
{
993
    CompactContext *compact = wctx->priv;
994

995
    if (strlen(compact->item_sep_str) != 1) {
996
        av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
997
               compact->item_sep_str);
998
        return AVERROR(EINVAL);
999
    }
1000
    compact->item_sep = compact->item_sep_str[0];
1001

1002
    if      (!strcmp(compact->escape_mode_str, "none")) compact->escape_str = none_escape_str;
1003
    else if (!strcmp(compact->escape_mode_str, "c"   )) compact->escape_str = c_escape_str;
1004
    else if (!strcmp(compact->escape_mode_str, "csv" )) compact->escape_str = csv_escape_str;
1005
    else {
1006
        av_log(wctx, AV_LOG_ERROR, "Unknown escape mode '%s'\n", compact->escape_mode_str);
1007
        return AVERROR(EINVAL);
1008
    }
1009

1010
    return 0;
1011
}
1012

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

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

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

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

1053
static void compact_print_str(WriterContext *wctx, const char *key, const char *value)
1054
{
1055
    CompactContext *compact = wctx->priv;
1056
    AVBPrint buf;
1057

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

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

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

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

1088
/* CSV output */
1089

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

1093
static const AVOption csv_options[] = {
1094
    {"item_sep", "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str=","},  CHAR_MIN, CHAR_MAX },
1095
    {"s",        "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str=","},  CHAR_MIN, CHAR_MAX },
1096
    {"nokey",    "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
1097
    {"nk",       "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
1098
    {"escape",   "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="csv"}, CHAR_MIN, CHAR_MAX },
1099
    {"e",        "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="csv"}, CHAR_MIN, CHAR_MAX },
1100
    {"print_section", "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
1101
    {"p",             "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
1102
    {NULL},
1103
};
1104

1105
DEFINE_WRITER_CLASS(csv);
1106

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

1119
/* Flat output */
1120

1121
typedef struct FlatContext {
1122
    const AVClass *class;
1123
    const char *sep_str;
1124
    char sep;
1125
    int hierarchical;
1126
} FlatContext;
1127

1128
#undef OFFSET
1129
#define OFFSET(x) offsetof(FlatContext, x)
1130

1131
static const AVOption flat_options[]= {
1132
    {"sep_char", "set separator",    OFFSET(sep_str),    AV_OPT_TYPE_STRING, {.str="."},  CHAR_MIN, CHAR_MAX },
1133
    {"s",        "set separator",    OFFSET(sep_str),    AV_OPT_TYPE_STRING, {.str="."},  CHAR_MIN, CHAR_MAX },
1134
    {"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
1135
    {"h",            "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
1136
    {NULL},
1137
};
1138

1139
DEFINE_WRITER_CLASS(flat);
1140

1141
static av_cold int flat_init(WriterContext *wctx)
1142
{
1143
    FlatContext *flat = wctx->priv;
1144

1145
    if (strlen(flat->sep_str) != 1) {
1146
        av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
1147
               flat->sep_str);
1148
        return AVERROR(EINVAL);
1149
    }
1150
    flat->sep = flat->sep_str[0];
1151

1152
    return 0;
1153
}
1154

1155
static const char *flat_escape_key_str(AVBPrint *dst, const char *src, const char sep)
1156
{
1157
    const char *p;
1158

1159
    for (p = src; *p; p++) {
1160
        if (!((*p >= '0' && *p <= '9') ||
1161
              (*p >= 'a' && *p <= 'z') ||
1162
              (*p >= 'A' && *p <= 'Z')))
1163
            av_bprint_chars(dst, '_', 1);
1164
        else
1165
            av_bprint_chars(dst, *p, 1);
1166
    }
1167
    return dst->str;
1168
}
1169

1170
static const char *flat_escape_value_str(AVBPrint *dst, const char *src)
1171
{
1172
    const char *p;
1173

1174
    for (p = src; *p; p++) {
1175
        switch (*p) {
1176
        case '\n': av_bprintf(dst, "%s", "\\n");  break;
1177
        case '\r': av_bprintf(dst, "%s", "\\r");  break;
1178
        case '\\': av_bprintf(dst, "%s", "\\\\"); break;
1179
        case '"':  av_bprintf(dst, "%s", "\\\""); break;
1180
        case '`':  av_bprintf(dst, "%s", "\\`");  break;
1181
        case '$':  av_bprintf(dst, "%s", "\\$");  break;
1182
        default:   av_bprint_chars(dst, *p, 1);   break;
1183
        }
1184
    }
1185
    return dst->str;
1186
}
1187

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

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

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

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

1214
static void flat_print_int(WriterContext *wctx, const char *key, long long int value)
1215
{
1216
    printf("%s%s=%lld\n", wctx->section_pbuf[wctx->level].str, key, value);
1217
}
1218

1219
static void flat_print_str(WriterContext *wctx, const char *key, const char *value)
1220
{
1221
    FlatContext *flat = wctx->priv;
1222
    AVBPrint buf;
1223

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

1232
static const Writer flat_writer = {
1233
    .name                  = "flat",
1234
    .priv_size             = sizeof(FlatContext),
1235
    .init                  = flat_init,
1236
    .print_section_header  = flat_print_section_header,
1237
    .print_integer         = flat_print_int,
1238
    .print_string          = flat_print_str,
1239
    .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS|WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
1240
    .priv_class            = &flat_class,
1241
};
1242

1243
/* INI format output */
1244

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

1250
#undef OFFSET
1251
#define OFFSET(x) offsetof(INIContext, x)
1252

1253
static const AVOption ini_options[] = {
1254
    {"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
1255
    {"h",            "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
1256
    {NULL},
1257
};
1258

1259
DEFINE_WRITER_CLASS(ini);
1260

1261
static char *ini_escape_str(AVBPrint *dst, const char *src)
1262
{
1263
    int i = 0;
1264
    char c = 0;
1265

1266
    while (c = src[i++]) {
1267
        switch (c) {
1268
        case '\b': av_bprintf(dst, "%s", "\\b"); break;
1269
        case '\f': av_bprintf(dst, "%s", "\\f"); break;
1270
        case '\n': av_bprintf(dst, "%s", "\\n"); break;
1271
        case '\r': av_bprintf(dst, "%s", "\\r"); break;
1272
        case '\t': av_bprintf(dst, "%s", "\\t"); break;
1273
        case '\\':
1274
        case '#' :
1275
        case '=' :
1276
        case ':' : av_bprint_chars(dst, '\\', 1);
1277
        default:
1278
            if ((unsigned char)c < 32)
1279
                av_bprintf(dst, "\\x00%02x", c & 0xff);
1280
            else
1281
                av_bprint_chars(dst, c, 1);
1282
            break;
1283
        }
1284
    }
1285
    return dst->str;
1286
}
1287

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

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

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

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

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

1317
    if (!(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER)))
1318
        printf("[%s]\n", buf->str);
1319
}
1320

1321
static void ini_print_str(WriterContext *wctx, const char *key, const char *value)
1322
{
1323
    AVBPrint buf;
1324

1325
    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
1326
    printf("%s=", ini_escape_str(&buf, key));
1327
    av_bprint_clear(&buf);
1328
    printf("%s\n", ini_escape_str(&buf, value));
1329
    av_bprint_finalize(&buf, NULL);
1330
}
1331

1332
static void ini_print_int(WriterContext *wctx, const char *key, long long int value)
1333
{
1334
    printf("%s=%lld\n", key, value);
1335
}
1336

1337
static const Writer ini_writer = {
1338
    .name                  = "ini",
1339
    .priv_size             = sizeof(INIContext),
1340
    .print_section_header  = ini_print_section_header,
1341
    .print_integer         = ini_print_int,
1342
    .print_string          = ini_print_str,
1343
    .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS|WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
1344
    .priv_class            = &ini_class,
1345
};
1346

1347
/* JSON output */
1348

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

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

1359
static const AVOption json_options[]= {
1360
    { "compact", "enable compact output", OFFSET(compact), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
1361
    { "c",       "enable compact output", OFFSET(compact), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
1362
    { NULL }
1363
};
1364

1365
DEFINE_WRITER_CLASS(json);
1366

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

1371
    json->item_sep       = json->compact ? ", " : ",\n";
1372
    json->item_start_end = json->compact ? " "  : "\n";
1373

1374
    return 0;
1375
}
1376

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

1383
    for (p = src; *p; p++) {
1384
        char *s = strchr(json_escape, *p);
1385
        if (s) {
1386
            av_bprint_chars(dst, '\\', 1);
1387
            av_bprint_chars(dst, json_subst[s - json_escape], 1);
1388
        } else if ((unsigned char)*p < 32) {
1389
            av_bprintf(dst, "\\u00%02x", *p & 0xff);
1390
        } else {
1391
            av_bprint_chars(dst, *p, 1);
1392
        }
1393
    }
1394
    return dst->str;
1395
}
1396

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

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

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

1410
    if (section->flags & SECTION_FLAG_IS_WRAPPER) {
1411
        printf("{\n");
1412
        json->indent_level++;
1413
    } else {
1414
        av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
1415
        json_escape_str(&buf, section->name, wctx);
1416
        JSON_INDENT();
1417

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

1426
            /* this is required so the parser can distinguish between packets and frames */
1427
            if (parent_section && parent_section->id == SECTION_ID_PACKETS_AND_FRAMES) {
1428
                if (!json->compact)
1429
                    JSON_INDENT();
1430
                printf("\"type\": \"%s\"%s", section->name, json->item_sep);
1431
            }
1432
        }
1433
        av_bprint_finalize(&buf, NULL);
1434
    }
1435
}
1436

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

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

1459
static inline void json_print_item_str(WriterContext *wctx,
1460
                                       const char *key, const char *value)
1461
{
1462
    AVBPrint buf;
1463

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

1471
static void json_print_str(WriterContext *wctx, const char *key, const char *value)
1472
{
1473
    JSONContext *json = wctx->priv;
1474

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

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

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

1492
    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
1493
    printf("\"%s\": %lld", json_escape_str(&buf, key, wctx), value);
1494
    av_bprint_finalize(&buf, NULL);
1495
}
1496

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

1509
/* XML output */
1510

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

1519
#undef OFFSET
1520
#define OFFSET(x) offsetof(XMLContext, x)
1521

1522
static const AVOption xml_options[] = {
1523
    {"fully_qualified", "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
1524
    {"q",               "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
1525
    {"xsd_strict",      "ensure that the output is XSD compliant",         OFFSET(xsd_strict),      AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
1526
    {"x",               "ensure that the output is XSD compliant",         OFFSET(xsd_strict),      AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
1527
    {NULL},
1528
};
1529

1530
DEFINE_WRITER_CLASS(xml);
1531

1532
static av_cold int xml_init(WriterContext *wctx)
1533
{
1534
    XMLContext *xml = wctx->priv;
1535

1536
    if (xml->xsd_strict) {
1537
        xml->fully_qualified = 1;
1538
#define CHECK_COMPLIANCE(opt, opt_name)                                 \
1539
        if (opt) {                                                      \
1540
            av_log(wctx, AV_LOG_ERROR,                                  \
1541
                   "XSD-compliant output selected but option '%s' was selected, XML output may be non-compliant.\n" \
1542
                   "You need to disable such option with '-no%s'\n", opt_name, opt_name); \
1543
            return AVERROR(EINVAL);                                     \
1544
        }
1545
        CHECK_COMPLIANCE(show_private_data, "private");
1546
        CHECK_COMPLIANCE(show_value_unit,   "unit");
1547
        CHECK_COMPLIANCE(use_value_prefix,  "prefix");
1548

1549
        if (do_show_frames && do_show_packets) {
1550
            av_log(wctx, AV_LOG_ERROR,
1551
                   "Interleaved frames and packets are not allowed in XSD. "
1552
                   "Select only one between the -show_frames and the -show_packets options.\n");
1553
            return AVERROR(EINVAL);
1554
        }
1555
    }
1556

1557
    return 0;
1558
}
1559

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

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

1575
    return dst->str;
1576
}
1577

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

1580
static void xml_print_section_header(WriterContext *wctx)
1581
{
1582
    XMLContext *xml = wctx->priv;
1583
    const struct section *section = wctx->section[wctx->level];
1584
    const struct section *parent_section = wctx->level ?
1585
        wctx->section[wctx->level-1] : NULL;
1586

1587
    if (wctx->level == 0) {
1588
        const char *qual = " xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' "
1589
            "xmlns:ffprobe='http://www.ffmpeg.org/schema/ffprobe' "
1590
            "xsi:schemaLocation='http://www.ffmpeg.org/schema/ffprobe ffprobe.xsd'";
1591

1592
        printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
1593
        printf("<%sffprobe%s>\n",
1594
               xml->fully_qualified ? "ffprobe:" : "",
1595
               xml->fully_qualified ? qual : "");
1596
        return;
1597
    }
1598

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

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

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

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

1639
static void xml_print_str(WriterContext *wctx, const char *key, const char *value)
1640
{
1641
    AVBPrint buf;
1642
    XMLContext *xml = wctx->priv;
1643
    const struct section *section = wctx->section[wctx->level];
1644

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

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

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

1662
static void xml_print_int(WriterContext *wctx, const char *key, long long int value)
1663
{
1664
    if (wctx->nb_item[wctx->level])
1665
        printf(" ");
1666
    printf("%s=\"%lld\"", key, value);
1667
}
1668

1669
static Writer xml_writer = {
1670
    .name                 = "xml",
1671
    .priv_size            = sizeof(XMLContext),
1672
    .init                 = xml_init,
1673
    .print_section_header = xml_print_section_header,
1674
    .print_section_footer = xml_print_section_footer,
1675
    .print_integer        = xml_print_int,
1676
    .print_string         = xml_print_str,
1677
    .flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
1678
    .priv_class           = &xml_class,
1679
};
1680

1681
static void writer_register_all(void)
1682
{
1683
    static int initialized;
1684

1685
    if (initialized)
1686
        return;
1687
    initialized = 1;
1688

1689
    writer_register(&default_writer);
1690
    writer_register(&compact_writer);
1691
    writer_register(&csv_writer);
1692
    writer_register(&flat_writer);
1693
    writer_register(&ini_writer);
1694
    writer_register(&json_writer);
1695
    writer_register(&xml_writer);
1696
}
1697

1698
#define print_fmt(k, f, ...) do {              \
1699
    av_bprint_clear(&pbuf);                    \
1700
    av_bprintf(&pbuf, f, __VA_ARGS__);         \
1701
    writer_print_string(w, k, pbuf.str, 0);    \
1702
} while (0)
1703

1704
#define print_int(k, v)         writer_print_integer(w, k, v)
1705
#define print_q(k, v, s)        writer_print_rational(w, k, v, s)
1706
#define print_str(k, v)         writer_print_string(w, k, v, 0)
1707
#define print_str_opt(k, v)     writer_print_string(w, k, v, PRINT_STRING_OPT)
1708
#define print_str_validate(k, v) writer_print_string(w, k, v, PRINT_STRING_VALIDATE)
1709
#define print_time(k, v, tb)    writer_print_time(w, k, v, tb, 0)
1710
#define print_ts(k, v)          writer_print_ts(w, k, v, 0)
1711
#define print_duration_time(k, v, tb) writer_print_time(w, k, v, tb, 1)
1712
#define print_duration_ts(k, v)       writer_print_ts(w, k, v, 1)
1713
#define print_val(k, v, u) do {                                     \
1714
    struct unit_value uv;                                           \
1715
    uv.val.i = v;                                                   \
1716
    uv.unit = u;                                                    \
1717
    writer_print_string(w, k, value_string(val_str, sizeof(val_str), uv), 0); \
1718
} while (0)
1719

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

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

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

1736
    if (!tags)
1737
        return 0;
1738
    writer_print_section_header(w, section_id);
1739

1740
    while ((tag = av_dict_get(tags, "", tag, AV_DICT_IGNORE_SUFFIX))) {
1741
        if ((ret = print_str_validate(tag->key, tag->value)) < 0)
1742
            break;
1743
    }
1744
    writer_print_section_footer(w);
1745

1746
    return ret;
1747
}
1748

1749
static void show_packet(WriterContext *w, AVFormatContext *fmt_ctx, AVPacket *pkt, int packet_idx)
1750
{
1751
    char val_str[128];
1752
    AVStream *st = fmt_ctx->streams[pkt->stream_index];
1753
    AVBPrint pbuf;
1754
    const char *s;
1755

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

1758
    writer_print_section_header(w, SECTION_ID_PACKET);
1759

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

1777
    if (pkt->side_data_elems) {
1778
        int i;
1779
        int size;
1780
        const uint8_t *side_metadata;
1781

1782
        side_metadata = av_packet_get_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA, &size);
1783
        if (side_metadata && size && do_show_packet_tags) {
1784
            AVDictionary *dict = NULL;
1785
            if (av_packet_unpack_dictionary(side_metadata, size, &dict) >= 0)
1786
                show_tags(w, dict, SECTION_ID_PACKET_TAGS);
1787
            av_dict_free(&dict);
1788
        }
1789
        writer_print_section_header(w, SECTION_ID_PACKET_SIDE_DATA_LIST);
1790
        for (i = 0; i < pkt->side_data_elems; i++) {
1791
            AVPacketSideData *sd = &pkt->side_data[i];
1792
            const char *name = av_packet_side_data_name(sd->type);
1793
            writer_print_section_header(w, SECTION_ID_PACKET_SIDE_DATA);
1794
            print_str("side_data_type", name ? name : "unknown");
1795
            print_int("side_data_size", sd->size);
1796
            if (sd->type == AV_PKT_DATA_DISPLAYMATRIX && sd->size >= 9*4) {
1797
                writer_print_integers(w, "displaymatrix", sd->data, 9, " %11d", 3, 4, 1);
1798
                print_int("rotation", av_display_rotation_get((int32_t *)sd->data));
1799
            }
1800
            writer_print_section_footer(w);
1801
        }
1802
        writer_print_section_footer(w);
1803
    }
1804

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

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

1814
static void show_subtitle(WriterContext *w, AVSubtitle *sub, AVStream *stream,
1815
                          AVFormatContext *fmt_ctx)
1816
{
1817
    AVBPrint pbuf;
1818

1819
    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
1820

1821
    writer_print_section_header(w, SECTION_ID_SUBTITLE);
1822

1823
    print_str ("media_type",         "subtitle");
1824
    print_ts  ("pts",                 sub->pts);
1825
    print_time("pts_time",            sub->pts, &AV_TIME_BASE_Q);
1826
    print_int ("format",              sub->format);
1827
    print_int ("start_display_time",  sub->start_display_time);
1828
    print_int ("end_display_time",    sub->end_display_time);
1829
    print_int ("num_rects",           sub->num_rects);
1830

1831
    writer_print_section_footer(w);
1832

1833
    av_bprint_finalize(&pbuf, NULL);
1834
    fflush(stdout);
1835
}
1836

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

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

1847
    writer_print_section_header(w, SECTION_ID_FRAME);
1848

1849
    s = av_get_media_type_string(stream->codec->codec_type);
1850
    if (s) print_str    ("media_type", s);
1851
    else   print_str_opt("media_type", "unknown");
1852
    print_int("stream_index",           stream->index);
1853
    print_int("key_frame",              frame->key_frame);
1854
    print_ts  ("pkt_pts",               frame->pkt_pts);
1855
    print_time("pkt_pts_time",          frame->pkt_pts, &stream->time_base);
1856
    print_ts  ("pkt_dts",               frame->pkt_dts);
1857
    print_time("pkt_dts_time",          frame->pkt_dts, &stream->time_base);
1858
    print_ts  ("best_effort_timestamp", av_frame_get_best_effort_timestamp(frame));
1859
    print_time("best_effort_timestamp_time", av_frame_get_best_effort_timestamp(frame), &stream->time_base);
1860
    print_duration_ts  ("pkt_duration",      av_frame_get_pkt_duration(frame));
1861
    print_duration_time("pkt_duration_time", av_frame_get_pkt_duration(frame), &stream->time_base);
1862
    if (av_frame_get_pkt_pos (frame) != -1) print_fmt    ("pkt_pos", "%"PRId64, av_frame_get_pkt_pos(frame));
1863
    else                      print_str_opt("pkt_pos", "N/A");
1864
    if (av_frame_get_pkt_size(frame) != -1) print_val    ("pkt_size", av_frame_get_pkt_size(frame), unit_byte_str);
1865
    else                       print_str_opt("pkt_size", "N/A");
1866

1867
    switch (stream->codec->codec_type) {
1868
        AVRational sar;
1869

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

1890
    case AVMEDIA_TYPE_AUDIO:
1891
        s = av_get_sample_fmt_name(frame->format);
1892
        if (s) print_str    ("sample_fmt", s);
1893
        else   print_str_opt("sample_fmt", "unknown");
1894
        print_int("nb_samples",         frame->nb_samples);
1895
        print_int("channels", av_frame_get_channels(frame));
1896
        if (av_frame_get_channel_layout(frame)) {
1897
            av_bprint_clear(&pbuf);
1898
            av_bprint_channel_layout(&pbuf, av_frame_get_channels(frame),
1899
                                     av_frame_get_channel_layout(frame));
1900
            print_str    ("channel_layout", pbuf.str);
1901
        } else
1902
            print_str_opt("channel_layout", "unknown");
1903
        break;
1904
    }
1905
    if (do_show_frame_tags)
1906
        show_tags(w, av_frame_get_metadata(frame), SECTION_ID_FRAME_TAGS);
1907
    if (frame->nb_side_data) {
1908
        writer_print_section_header(w, SECTION_ID_FRAME_SIDE_DATA_LIST);
1909
        for (i = 0; i < frame->nb_side_data; i++) {
1910
            AVFrameSideData *sd = frame->side_data[i];
1911
            const char *name;
1912

1913
            writer_print_section_header(w, SECTION_ID_FRAME_SIDE_DATA);
1914
            name = av_frame_side_data_name(sd->type);
1915
            print_str("side_data_type", name ? name : "unknown");
1916
            print_int("side_data_size", sd->size);
1917
            if (sd->type == AV_FRAME_DATA_DISPLAYMATRIX && sd->size >= 9*4) {
1918
                writer_print_integers(w, "displaymatrix", sd->data, 9, " %11d", 3, 4, 1);
1919
                print_int("rotation", av_display_rotation_get((int32_t *)sd->data));
1920
            } else if (sd->type == AV_FRAME_DATA_GOP_TIMECODE && sd->size >= 8) {
1921
                char tcbuf[AV_TIMECODE_STR_SIZE];
1922
                av_timecode_make_mpeg_tc_string(tcbuf, *(int64_t *)(sd->data));
1923
                print_str("timecode", tcbuf);
1924
            }
1925
            writer_print_section_footer(w);
1926
        }
1927
        writer_print_section_footer(w);
1928
    }
1929

1930
    writer_print_section_footer(w);
1931

1932
    av_bprint_finalize(&pbuf, NULL);
1933
    fflush(stdout);
1934
}
1935

1936
static av_always_inline int process_frame(WriterContext *w,
1937
                                          AVFormatContext *fmt_ctx,
1938
                                          AVFrame *frame, AVPacket *pkt)
1939
{
1940
    AVCodecContext *dec_ctx = fmt_ctx->streams[pkt->stream_index]->codec;
1941
    AVSubtitle sub;
1942
    int ret = 0, got_frame = 0;
1943

1944
    if (dec_ctx->codec) {
1945
        switch (dec_ctx->codec_type) {
1946
        case AVMEDIA_TYPE_VIDEO:
1947
            ret = avcodec_decode_video2(dec_ctx, frame, &got_frame, pkt);
1948
            break;
1949

1950
        case AVMEDIA_TYPE_AUDIO:
1951
            ret = avcodec_decode_audio4(dec_ctx, frame, &got_frame, pkt);
1952
            break;
1953

1954
        case AVMEDIA_TYPE_SUBTITLE:
1955
            ret = avcodec_decode_subtitle2(dec_ctx, &sub, &got_frame, pkt);
1956
            break;
1957
        }
1958
    }
1959

1960
    if (ret < 0)
1961
        return ret;
1962
    ret = FFMIN(ret, pkt->size); /* guard against bogus return values */
1963
    pkt->data += ret;
1964
    pkt->size -= ret;
1965
    if (got_frame) {
1966
        int is_sub = (dec_ctx->codec_type == AVMEDIA_TYPE_SUBTITLE);
1967
        nb_streams_frames[pkt->stream_index]++;
1968
        if (do_show_frames)
1969
            if (is_sub)
1970
                show_subtitle(w, &sub, fmt_ctx->streams[pkt->stream_index], fmt_ctx);
1971
            else
1972
                show_frame(w, frame, fmt_ctx->streams[pkt->stream_index], fmt_ctx);
1973
        if (is_sub)
1974
            avsubtitle_free(&sub);
1975
    }
1976
    return got_frame;
1977
}
1978

1979
static void log_read_interval(const ReadInterval *interval, void *log_ctx, int log_level)
1980
{
1981
    av_log(log_ctx, log_level, "id:%d", interval->id);
1982

1983
    if (interval->has_start) {
1984
        av_log(log_ctx, log_level, " start:%s%s", interval->start_is_offset ? "+" : "",
1985
               av_ts2timestr(interval->start, &AV_TIME_BASE_Q));
1986
    } else {
1987
        av_log(log_ctx, log_level, " start:N/A");
1988
    }
1989

1990
    if (interval->has_end) {
1991
        av_log(log_ctx, log_level, " end:%s", interval->end_is_offset ? "+" : "");
1992
        if (interval->duration_frames)
1993
            av_log(log_ctx, log_level, "#%"PRId64, interval->end);
1994
        else
1995
            av_log(log_ctx, log_level, "%s", av_ts2timestr(interval->end, &AV_TIME_BASE_Q));
1996
    } else {
1997
        av_log(log_ctx, log_level, " end:N/A");
1998
    }
1999

2000
    av_log(log_ctx, log_level, "\n");
2001
}
2002

2003
static int read_interval_packets(WriterContext *w, AVFormatContext *fmt_ctx,
2004
                                 const ReadInterval *interval, int64_t *cur_ts)
2005
{
2006
    AVPacket pkt, pkt1;
2007
    AVFrame *frame = NULL;
2008
    int ret = 0, i = 0, frame_count = 0;
2009
    int64_t start = -INT64_MAX, end = interval->end;
2010
    int has_start = 0, has_end = interval->has_end && !interval->end_is_offset;
2011

2012
    av_init_packet(&pkt);
2013

2014
    av_log(NULL, AV_LOG_VERBOSE, "Processing read interval ");
2015
    log_read_interval(interval, NULL, AV_LOG_VERBOSE);
2016

2017
    if (interval->has_start) {
2018
        int64_t target;
2019
        if (interval->start_is_offset) {
2020
            if (*cur_ts == AV_NOPTS_VALUE) {
2021
                av_log(NULL, AV_LOG_ERROR,
2022
                       "Could not seek to relative position since current "
2023
                       "timestamp is not defined\n");
2024
                ret = AVERROR(EINVAL);
2025
                goto end;
2026
            }
2027
            target = *cur_ts + interval->start;
2028
        } else {
2029
            target = interval->start;
2030
        }
2031

2032
        av_log(NULL, AV_LOG_VERBOSE, "Seeking to read interval start point %s\n",
2033
               av_ts2timestr(target, &AV_TIME_BASE_Q));
2034
        if ((ret = avformat_seek_file(fmt_ctx, -1, -INT64_MAX, target, INT64_MAX, 0)) < 0) {
2035
            av_log(NULL, AV_LOG_ERROR, "Could not seek to position %"PRId64": %s\n",
2036
                   interval->start, av_err2str(ret));
2037
            goto end;
2038
        }
2039
    }
2040

2041
    frame = av_frame_alloc();
2042
    if (!frame) {
2043
        ret = AVERROR(ENOMEM);
2044
        goto end;
2045
    }
2046
    while (!av_read_frame(fmt_ctx, &pkt)) {
2047
        if (fmt_ctx->nb_streams > nb_streams) {
2048
            REALLOCZ_ARRAY_STREAM(nb_streams_frames,  nb_streams, fmt_ctx->nb_streams);
2049
            REALLOCZ_ARRAY_STREAM(nb_streams_packets, nb_streams, fmt_ctx->nb_streams);
2050
            REALLOCZ_ARRAY_STREAM(selected_streams,   nb_streams, fmt_ctx->nb_streams);
2051
            nb_streams = fmt_ctx->nb_streams;
2052
        }
2053
        if (selected_streams[pkt.stream_index]) {
2054
            AVRational tb = fmt_ctx->streams[pkt.stream_index]->time_base;
2055

2056
            if (pkt.pts != AV_NOPTS_VALUE)
2057
                *cur_ts = av_rescale_q(pkt.pts, tb, AV_TIME_BASE_Q);
2058

2059
            if (!has_start && *cur_ts != AV_NOPTS_VALUE) {
2060
                start = *cur_ts;
2061
                has_start = 1;
2062
            }
2063

2064
            if (has_start && !has_end && interval->end_is_offset) {
2065
                end = start + interval->end;
2066
                has_end = 1;
2067
            }
2068

2069
            if (interval->end_is_offset && interval->duration_frames) {
2070
                if (frame_count >= interval->end)
2071
                    break;
2072
            } else if (has_end && *cur_ts != AV_NOPTS_VALUE && *cur_ts >= end) {
2073
                break;
2074
            }
2075

2076
            frame_count++;
2077
            if (do_read_packets) {
2078
                if (do_show_packets)
2079
                    show_packet(w, fmt_ctx, &pkt, i++);
2080
                nb_streams_packets[pkt.stream_index]++;
2081
            }
2082
            if (do_read_frames) {
2083
                pkt1 = pkt;
2084
                while (pkt1.size && process_frame(w, fmt_ctx, frame, &pkt1) > 0);
2085
            }
2086
        }
2087
        av_packet_unref(&pkt);
2088
    }
2089
    av_init_packet(&pkt);
2090
    pkt.data = NULL;
2091
    pkt.size = 0;
2092
    //Flush remaining frames that are cached in the decoder
2093
    for (i = 0; i < fmt_ctx->nb_streams; i++) {
2094
        pkt.stream_index = i;
2095
        if (do_read_frames)
2096
            while (process_frame(w, fmt_ctx, frame, &pkt) > 0);
2097
    }
2098

2099
end:
2100
    av_frame_free(&frame);
2101
    if (ret < 0) {
2102
        av_log(NULL, AV_LOG_ERROR, "Could not read packets in interval ");
2103
        log_read_interval(interval, NULL, AV_LOG_ERROR);
2104
    }
2105
    return ret;
2106
}
2107

2108
static int read_packets(WriterContext *w, AVFormatContext *fmt_ctx)
2109
{
2110
    int i, ret = 0;
2111
    int64_t cur_ts = fmt_ctx->start_time;
2112

2113
    if (read_intervals_nb == 0) {
2114
        ReadInterval interval = (ReadInterval) { .has_start = 0, .has_end = 0 };
2115
        ret = read_interval_packets(w, fmt_ctx, &interval, &cur_ts);
2116
    } else {
2117
        for (i = 0; i < read_intervals_nb; i++) {
2118
            ret = read_interval_packets(w, fmt_ctx, &read_intervals[i], &cur_ts);
2119
            if (ret < 0)
2120
                break;
2121
        }
2122
    }
2123

2124
    return ret;
2125
}
2126

2127
static int show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_idx, int in_program)
2128
{
2129
    AVStream *stream = fmt_ctx->streams[stream_idx];
2130
    AVCodecContext *dec_ctx;
2131
    const AVCodec *dec;
2132
    char val_str[128];
2133
    const char *s;
2134
    AVRational sar, dar;
2135
    AVBPrint pbuf;
2136
    const AVCodecDescriptor *cd;
2137
    int ret = 0;
2138

2139
    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
2140

2141
    writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM : SECTION_ID_STREAM);
2142

2143
    print_int("index", stream->index);
2144

2145
    if ((dec_ctx = stream->codec)) {
2146
        const char *profile = NULL;
2147
        dec = dec_ctx->codec;
2148
        if (dec) {
2149
            print_str("codec_name", dec->name);
2150
            if (!do_bitexact) {
2151
                if (dec->long_name) print_str    ("codec_long_name", dec->long_name);
2152
                else                print_str_opt("codec_long_name", "unknown");
2153
            }
2154
        } else if ((cd = avcodec_descriptor_get(stream->codec->codec_id))) {
2155
            print_str_opt("codec_name", cd->name);
2156
            if (!do_bitexact) {
2157
                print_str_opt("codec_long_name",
2158
                              cd->long_name ? cd->long_name : "unknown");
2159
            }
2160
        } else {
2161
            print_str_opt("codec_name", "unknown");
2162
            if (!do_bitexact) {
2163
                print_str_opt("codec_long_name", "unknown");
2164
            }
2165
        }
2166

2167
        if (!do_bitexact && dec && (profile = av_get_profile_name(dec, dec_ctx->profile)))
2168
            print_str("profile", profile);
2169
        else {
2170
            if (dec_ctx->profile != FF_PROFILE_UNKNOWN) {
2171
                char profile_num[12];
2172
                snprintf(profile_num, sizeof(profile_num), "%d", dec_ctx->profile);
2173
                print_str("profile", profile_num);
2174
            } else
2175
                print_str_opt("profile", "unknown");
2176
        }
2177

2178
        s = av_get_media_type_string(dec_ctx->codec_type);
2179
        if (s) print_str    ("codec_type", s);
2180
        else   print_str_opt("codec_type", "unknown");
2181
        print_q("codec_time_base", dec_ctx->time_base, '/');
2182

2183
        /* print AVI/FourCC tag */
2184
        av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
2185
        print_str("codec_tag_string",    val_str);
2186
        print_fmt("codec_tag", "0x%04x", dec_ctx->codec_tag);
2187

2188
        switch (dec_ctx->codec_type) {
2189
        case AVMEDIA_TYPE_VIDEO:
2190
            print_int("width",        dec_ctx->width);
2191
            print_int("height",       dec_ctx->height);
2192
            print_int("coded_width",  dec_ctx->coded_width);
2193
            print_int("coded_height", dec_ctx->coded_height);
2194
            print_int("has_b_frames", dec_ctx->has_b_frames);
2195
            sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, NULL);
2196
            if (sar.den) {
2197
                print_q("sample_aspect_ratio", sar, ':');
2198
                av_reduce(&dar.num, &dar.den,
2199
                          dec_ctx->width  * sar.num,
2200
                          dec_ctx->height * sar.den,
2201
                          1024*1024);
2202
                print_q("display_aspect_ratio", dar, ':');
2203
            } else {
2204
                print_str_opt("sample_aspect_ratio", "N/A");
2205
                print_str_opt("display_aspect_ratio", "N/A");
2206
            }
2207
            s = av_get_pix_fmt_name(dec_ctx->pix_fmt);
2208
            if (s) print_str    ("pix_fmt", s);
2209
            else   print_str_opt("pix_fmt", "unknown");
2210
            print_int("level",   dec_ctx->level);
2211
            if (dec_ctx->color_range != AVCOL_RANGE_UNSPECIFIED)
2212
                print_str    ("color_range", av_color_range_name(dec_ctx->color_range));
2213
            else
2214
                print_str_opt("color_range", "N/A");
2215
            s = av_get_colorspace_name(dec_ctx->colorspace);
2216
            if (s) print_str    ("color_space", s);
2217
            else   print_str_opt("color_space", "unknown");
2218

2219
            if (dec_ctx->color_trc != AVCOL_TRC_UNSPECIFIED)
2220
                print_str("color_transfer", av_color_transfer_name(dec_ctx->color_trc));
2221
            else
2222
                print_str_opt("color_transfer", av_color_transfer_name(dec_ctx->color_trc));
2223

2224
            if (dec_ctx->color_primaries != AVCOL_PRI_UNSPECIFIED)
2225
                print_str("color_primaries", av_color_primaries_name(dec_ctx->color_primaries));
2226
            else
2227
                print_str_opt("color_primaries", av_color_primaries_name(dec_ctx->color_primaries));
2228

2229
            if (dec_ctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
2230
                print_str("chroma_location", av_chroma_location_name(dec_ctx->chroma_sample_location));
2231
            else
2232
                print_str_opt("chroma_location", av_chroma_location_name(dec_ctx->chroma_sample_location));
2233

2234
#if FF_API_PRIVATE_OPT
2235
            if (dec_ctx->timecode_frame_start >= 0) {
2236
                char tcbuf[AV_TIMECODE_STR_SIZE];
2237
                av_timecode_make_mpeg_tc_string(tcbuf, dec_ctx->timecode_frame_start);
2238
                print_str("timecode", tcbuf);
2239
            } else {
2240
                print_str_opt("timecode", "N/A");
2241
            }
2242
#endif
2243
            print_int("refs", dec_ctx->refs);
2244
            break;
2245

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

2253
            if (dec_ctx->channel_layout) {
2254
                av_bprint_clear(&pbuf);
2255
                av_bprint_channel_layout(&pbuf, dec_ctx->channels, dec_ctx->channel_layout);
2256
                print_str    ("channel_layout", pbuf.str);
2257
            } else {
2258
                print_str_opt("channel_layout", "unknown");
2259
            }
2260

2261
            print_int("bits_per_sample", av_get_bits_per_sample(dec_ctx->codec_id));
2262
            break;
2263

2264
        case AVMEDIA_TYPE_SUBTITLE:
2265
            if (dec_ctx->width)
2266
                print_int("width",       dec_ctx->width);
2267
            else
2268
                print_str_opt("width",   "N/A");
2269
            if (dec_ctx->height)
2270
                print_int("height",      dec_ctx->height);
2271
            else
2272
                print_str_opt("height",  "N/A");
2273
            break;
2274
        }
2275
    } else {
2276
        print_str_opt("codec_type", "unknown");
2277
    }
2278
    if (dec_ctx->codec && dec_ctx->codec->priv_class && show_private_data) {
2279
        const AVOption *opt = NULL;
2280
        while (opt = av_opt_next(dec_ctx->priv_data,opt)) {
2281
            uint8_t *str;
2282
            if (opt->flags) continue;
2283
            if (av_opt_get(dec_ctx->priv_data, opt->name, 0, &str) >= 0) {
2284
                print_str(opt->name, str);
2285
                av_free(str);
2286
            }
2287
        }
2288
    }
2289

2290
    if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS) print_fmt    ("id", "0x%x", stream->id);
2291
    else                                          print_str_opt("id", "N/A");
2292
    print_q("r_frame_rate",   stream->r_frame_rate,   '/');
2293
    print_q("avg_frame_rate", stream->avg_frame_rate, '/');
2294
    print_q("time_base",      stream->time_base,      '/');
2295
    print_ts  ("start_pts",   stream->start_time);
2296
    print_time("start_time",  stream->start_time, &stream->time_base);
2297
    print_ts  ("duration_ts", stream->duration);
2298
    print_time("duration",    stream->duration, &stream->time_base);
2299
    if (dec_ctx->bit_rate > 0) print_val    ("bit_rate", dec_ctx->bit_rate, unit_bit_per_second_str);
2300
    else                       print_str_opt("bit_rate", "N/A");
2301
    if (dec_ctx->rc_max_rate > 0) print_val ("max_bit_rate", dec_ctx->rc_max_rate, unit_bit_per_second_str);
2302
    else                       print_str_opt("max_bit_rate", "N/A");
2303
    if (dec_ctx->bits_per_raw_sample > 0) print_fmt("bits_per_raw_sample", "%d", dec_ctx->bits_per_raw_sample);
2304
    else                       print_str_opt("bits_per_raw_sample", "N/A");
2305
    if (stream->nb_frames) print_fmt    ("nb_frames", "%"PRId64, stream->nb_frames);
2306
    else                   print_str_opt("nb_frames", "N/A");
2307
    if (nb_streams_frames[stream_idx])  print_fmt    ("nb_read_frames", "%"PRIu64, nb_streams_frames[stream_idx]);
2308
    else                                print_str_opt("nb_read_frames", "N/A");
2309
    if (nb_streams_packets[stream_idx]) print_fmt    ("nb_read_packets", "%"PRIu64, nb_streams_packets[stream_idx]);
2310
    else                                print_str_opt("nb_read_packets", "N/A");
2311
    if (do_show_data)
2312
        writer_print_data(w, "extradata", dec_ctx->extradata,
2313
                                          dec_ctx->extradata_size);
2314
    writer_print_data_hash(w, "extradata_hash", dec_ctx->extradata,
2315
                                                dec_ctx->extradata_size);
2316

2317
    /* Print disposition information */
2318
#define PRINT_DISPOSITION(flagname, name) do {                                \
2319
        print_int(name, !!(stream->disposition & AV_DISPOSITION_##flagname)); \
2320
    } while (0)
2321

2322
    if (do_show_stream_disposition) {
2323
    writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM_DISPOSITION : SECTION_ID_STREAM_DISPOSITION);
2324
    PRINT_DISPOSITION(DEFAULT,          "default");
2325
    PRINT_DISPOSITION(DUB,              "dub");
2326
    PRINT_DISPOSITION(ORIGINAL,         "original");
2327
    PRINT_DISPOSITION(COMMENT,          "comment");
2328
    PRINT_DISPOSITION(LYRICS,           "lyrics");
2329
    PRINT_DISPOSITION(KARAOKE,          "karaoke");
2330
    PRINT_DISPOSITION(FORCED,           "forced");
2331
    PRINT_DISPOSITION(HEARING_IMPAIRED, "hearing_impaired");
2332
    PRINT_DISPOSITION(VISUAL_IMPAIRED,  "visual_impaired");
2333
    PRINT_DISPOSITION(CLEAN_EFFECTS,    "clean_effects");
2334
    PRINT_DISPOSITION(ATTACHED_PIC,     "attached_pic");
2335
    writer_print_section_footer(w);
2336
    }
2337

2338
    if (do_show_stream_tags)
2339
        ret = show_tags(w, stream->metadata, in_program ? SECTION_ID_PROGRAM_STREAM_TAGS : SECTION_ID_STREAM_TAGS);
2340

2341
    if (stream->nb_side_data) {
2342
        int i;
2343
        writer_print_section_header(w, SECTION_ID_STREAM_SIDE_DATA_LIST);
2344
        for (i = 0; i < stream->nb_side_data; i++) {
2345
            AVPacketSideData *sd = &stream->side_data[i];
2346
            const char *name = av_packet_side_data_name(sd->type);
2347

2348
            writer_print_section_header(w, SECTION_ID_STREAM_SIDE_DATA);
2349
            print_str("side_data_type", name ? name : "unknown");
2350
            print_int("side_data_size", sd->size);
2351
            if (sd->type == AV_PKT_DATA_DISPLAYMATRIX && sd->size >= 9*4) {
2352
                writer_print_integers(w, "displaymatrix", sd->data, 9, " %11d", 3, 4, 1);
2353
                print_int("rotation", av_display_rotation_get((int32_t *)sd->data));
2354
            }
2355
            writer_print_section_footer(w);
2356
        }
2357
        writer_print_section_footer(w);
2358
    }
2359

2360
    writer_print_section_footer(w);
2361
    av_bprint_finalize(&pbuf, NULL);
2362
    fflush(stdout);
2363

2364
    return ret;
2365
}
2366

2367
static int show_streams(WriterContext *w, AVFormatContext *fmt_ctx)
2368
{
2369
    int i, ret = 0;
2370

2371
    writer_print_section_header(w, SECTION_ID_STREAMS);
2372
    for (i = 0; i < fmt_ctx->nb_streams; i++)
2373
        if (selected_streams[i]) {
2374
            ret = show_stream(w, fmt_ctx, i, 0);
2375
            if (ret < 0)
2376
                break;
2377
        }
2378
    writer_print_section_footer(w);
2379

2380
    return ret;
2381
}
2382

2383
static int show_program(WriterContext *w, AVFormatContext *fmt_ctx, AVProgram *program)
2384
{
2385
    int i, ret = 0;
2386

2387
    writer_print_section_header(w, SECTION_ID_PROGRAM);
2388
    print_int("program_id", program->id);
2389
    print_int("program_num", program->program_num);
2390
    print_int("nb_streams", program->nb_stream_indexes);
2391
    print_int("pmt_pid", program->pmt_pid);
2392
    print_int("pcr_pid", program->pcr_pid);
2393
    print_ts("start_pts", program->start_time);
2394
    print_time("start_time", program->start_time, &AV_TIME_BASE_Q);
2395
    print_ts("end_pts", program->end_time);
2396
    print_time("end_time", program->end_time, &AV_TIME_BASE_Q);
2397
    if (do_show_program_tags)
2398
        ret = show_tags(w, program->metadata, SECTION_ID_PROGRAM_TAGS);
2399
    if (ret < 0)
2400
        goto end;
2401

2402
    writer_print_section_header(w, SECTION_ID_PROGRAM_STREAMS);
2403
    for (i = 0; i < program->nb_stream_indexes; i++) {
2404
        if (selected_streams[program->stream_index[i]]) {
2405
            ret = show_stream(w, fmt_ctx, program->stream_index[i], 1);
2406
            if (ret < 0)
2407
                break;
2408
        }
2409
    }
2410
    writer_print_section_footer(w);
2411

2412
end:
2413
    writer_print_section_footer(w);
2414
    return ret;
2415
}
2416

2417
static int show_programs(WriterContext *w, AVFormatContext *fmt_ctx)
2418
{
2419
    int i, ret = 0;
2420

2421
    writer_print_section_header(w, SECTION_ID_PROGRAMS);
2422
    for (i = 0; i < fmt_ctx->nb_programs; i++) {
2423
        AVProgram *program = fmt_ctx->programs[i];
2424
        if (!program)
2425
            continue;
2426
        ret = show_program(w, fmt_ctx, program);
2427
        if (ret < 0)
2428
            break;
2429
    }
2430
    writer_print_section_footer(w);
2431
    return ret;
2432
}
2433

2434
static int show_chapters(WriterContext *w, AVFormatContext *fmt_ctx)
2435
{
2436
    int i, ret = 0;
2437

2438
    writer_print_section_header(w, SECTION_ID_CHAPTERS);
2439
    for (i = 0; i < fmt_ctx->nb_chapters; i++) {
2440
        AVChapter *chapter = fmt_ctx->chapters[i];
2441

2442
        writer_print_section_header(w, SECTION_ID_CHAPTER);
2443
        print_int("id", chapter->id);
2444
        print_q  ("time_base", chapter->time_base, '/');
2445
        print_int("start", chapter->start);
2446
        print_time("start_time", chapter->start, &chapter->time_base);
2447
        print_int("end", chapter->end);
2448
        print_time("end_time", chapter->end, &chapter->time_base);
2449
        if (do_show_chapter_tags)
2450
            ret = show_tags(w, chapter->metadata, SECTION_ID_CHAPTER_TAGS);
2451
        writer_print_section_footer(w);
2452
    }
2453
    writer_print_section_footer(w);
2454

2455
    return ret;
2456
}
2457

2458
static int show_format(WriterContext *w, AVFormatContext *fmt_ctx)
2459
{
2460
    char val_str[128];
2461
    int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;
2462
    int ret = 0;
2463

2464
    writer_print_section_header(w, SECTION_ID_FORMAT);
2465
    print_str_validate("filename", fmt_ctx->filename);
2466
    print_int("nb_streams",       fmt_ctx->nb_streams);
2467
    print_int("nb_programs",      fmt_ctx->nb_programs);
2468
    print_str("format_name",      fmt_ctx->iformat->name);
2469
    if (!do_bitexact) {
2470
        if (fmt_ctx->iformat->long_name) print_str    ("format_long_name", fmt_ctx->iformat->long_name);
2471
        else                             print_str_opt("format_long_name", "unknown");
2472
    }
2473
    print_time("start_time",      fmt_ctx->start_time, &AV_TIME_BASE_Q);
2474
    print_time("duration",        fmt_ctx->duration,   &AV_TIME_BASE_Q);
2475
    if (size >= 0) print_val    ("size", size, unit_byte_str);
2476
    else           print_str_opt("size", "N/A");
2477
    if (fmt_ctx->bit_rate > 0) print_val    ("bit_rate", fmt_ctx->bit_rate, unit_bit_per_second_str);
2478
    else                       print_str_opt("bit_rate", "N/A");
2479
    print_int("probe_score", av_format_get_probe_score(fmt_ctx));
2480
    if (do_show_format_tags)
2481
        ret = show_tags(w, fmt_ctx->metadata, SECTION_ID_FORMAT_TAGS);
2482

2483
    writer_print_section_footer(w);
2484
    fflush(stdout);
2485
    return ret;
2486
}
2487

2488
static void show_error(WriterContext *w, int err)
2489
{
2490
    char errbuf[128];
2491
    const char *errbuf_ptr = errbuf;
2492

2493
    if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
2494
        errbuf_ptr = strerror(AVUNERROR(err));
2495

2496
    writer_print_section_header(w, SECTION_ID_ERROR);
2497
    print_int("code", err);
2498
    print_str("string", errbuf_ptr);
2499
    writer_print_section_footer(w);
2500
}
2501

2502
static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
2503
{
2504
    int err, i, orig_nb_streams;
2505
    AVFormatContext *fmt_ctx = NULL;
2506
    AVDictionaryEntry *t;
2507
    AVDictionary **opts;
2508
    int scan_all_pmts_set = 0;
2509

2510
    if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
2511
        av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
2512
        scan_all_pmts_set = 1;
2513
    }
2514
    if ((err = avformat_open_input(&fmt_ctx, filename,
2515
                                   iformat, &format_opts)) < 0) {
2516
        print_error(filename, err);
2517
        return err;
2518
    }
2519
    *fmt_ctx_ptr = fmt_ctx;
2520
    if (scan_all_pmts_set)
2521
        av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
2522
    if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2523
        av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2524
        return AVERROR_OPTION_NOT_FOUND;
2525
    }
2526

2527
    /* fill the streams in the format context */
2528
    opts = setup_find_stream_info_opts(fmt_ctx, codec_opts);
2529
    orig_nb_streams = fmt_ctx->nb_streams;
2530

2531
    err = avformat_find_stream_info(fmt_ctx, opts);
2532

2533
    for (i = 0; i < orig_nb_streams; i++)
2534
        av_dict_free(&opts[i]);
2535
    av_freep(&opts);
2536

2537
    if (err < 0) {
2538
        print_error(filename, err);
2539
        return err;
2540
    }
2541

2542
    av_dump_format(fmt_ctx, 0, filename, 0);
2543

2544
    /* bind a decoder to each input stream */
2545
    for (i = 0; i < fmt_ctx->nb_streams; i++) {
2546
        AVStream *stream = fmt_ctx->streams[i];
2547
        AVCodec *codec;
2548

2549
        if (stream->codec->codec_id == AV_CODEC_ID_PROBE) {
2550
            av_log(NULL, AV_LOG_WARNING,
2551
                   "Failed to probe codec for input stream %d\n",
2552
                    stream->index);
2553
        } else if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
2554
            av_log(NULL, AV_LOG_WARNING,
2555
                    "Unsupported codec with id %d for input stream %d\n",
2556
                    stream->codec->codec_id, stream->index);
2557
        } else {
2558
            AVDictionary *opts = filter_codec_opts(codec_opts, stream->codec->codec_id,
2559
                                                   fmt_ctx, stream, codec);
2560
            if (avcodec_open2(stream->codec, codec, &opts) < 0) {
2561
                av_log(NULL, AV_LOG_WARNING, "Could not open codec for input stream %d\n",
2562
                       stream->index);
2563
            }
2564
            if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2565
                av_log(NULL, AV_LOG_ERROR, "Option %s for input stream %d not found\n",
2566
                       t->key, stream->index);
2567
                return AVERROR_OPTION_NOT_FOUND;
2568
            }
2569
        }
2570
    }
2571

2572
    *fmt_ctx_ptr = fmt_ctx;
2573
    return 0;
2574
}
2575

2576
static void close_input_file(AVFormatContext **ctx_ptr)
2577
{
2578
    int i;
2579
    AVFormatContext *fmt_ctx = *ctx_ptr;
2580

2581
    /* close decoder for each stream */
2582
    for (i = 0; i < fmt_ctx->nb_streams; i++)
2583
        if (fmt_ctx->streams[i]->codec->codec_id != AV_CODEC_ID_NONE)
2584
            avcodec_close(fmt_ctx->streams[i]->codec);
2585

2586
    avformat_close_input(ctx_ptr);
2587
}
2588

2589
static int probe_file(WriterContext *wctx, const char *filename)
2590
{
2591
    AVFormatContext *fmt_ctx = NULL;
2592
    int ret, i;
2593
    int section_id;
2594

2595
    do_read_frames = do_show_frames || do_count_frames;
2596
    do_read_packets = do_show_packets || do_count_packets;
2597

2598
    ret = open_input_file(&fmt_ctx, filename);
2599
    if (ret < 0)
2600
        goto end;
2601

2602
#define CHECK_END if (ret < 0) goto end
2603

2604
    nb_streams = fmt_ctx->nb_streams;
2605
    REALLOCZ_ARRAY_STREAM(nb_streams_frames,0,fmt_ctx->nb_streams);
2606
    REALLOCZ_ARRAY_STREAM(nb_streams_packets,0,fmt_ctx->nb_streams);
2607
    REALLOCZ_ARRAY_STREAM(selected_streams,0,fmt_ctx->nb_streams);
2608

2609
    for (i = 0; i < fmt_ctx->nb_streams; i++) {
2610
        if (stream_specifier) {
2611
            ret = avformat_match_stream_specifier(fmt_ctx,
2612
                                                  fmt_ctx->streams[i],
2613
                                                  stream_specifier);
2614
            CHECK_END;
2615
            else
2616
                selected_streams[i] = ret;
2617
            ret = 0;
2618
        } else {
2619
            selected_streams[i] = 1;
2620
        }
2621
    }
2622

2623
    if (do_read_frames || do_read_packets) {
2624
        if (do_show_frames && do_show_packets &&
2625
            wctx->writer->flags & WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER)
2626
            section_id = SECTION_ID_PACKETS_AND_FRAMES;
2627
        else if (do_show_packets && !do_show_frames)
2628
            section_id = SECTION_ID_PACKETS;
2629
        else // (!do_show_packets && do_show_frames)
2630
            section_id = SECTION_ID_FRAMES;
2631
        if (do_show_frames || do_show_packets)
2632
            writer_print_section_header(wctx, section_id);
2633
        ret = read_packets(wctx, fmt_ctx);
2634
        if (do_show_frames || do_show_packets)
2635
            writer_print_section_footer(wctx);
2636
        CHECK_END;
2637
    }
2638

2639
    if (do_show_programs) {
2640
        ret = show_programs(wctx, fmt_ctx);
2641
        CHECK_END;
2642
    }
2643

2644
    if (do_show_streams) {
2645
        ret = show_streams(wctx, fmt_ctx);
2646
        CHECK_END;
2647
    }
2648
    if (do_show_chapters) {
2649
        ret = show_chapters(wctx, fmt_ctx);
2650
        CHECK_END;
2651
    }
2652
    if (do_show_format) {
2653
        ret = show_format(wctx, fmt_ctx);
2654
        CHECK_END;
2655
    }
2656

2657
end:
2658
    if (fmt_ctx)
2659
        close_input_file(&fmt_ctx);
2660
    av_freep(&nb_streams_frames);
2661
    av_freep(&nb_streams_packets);
2662
    av_freep(&selected_streams);
2663

2664
    return ret;
2665
}
2666

2667
static void show_usage(void)
2668
{
2669
    av_log(NULL, AV_LOG_INFO, "Simple multimedia streams analyzer\n");
2670
    av_log(NULL, AV_LOG_INFO, "usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);
2671
    av_log(NULL, AV_LOG_INFO, "\n");
2672
}
2673

2674
static void ffprobe_show_program_version(WriterContext *w)
2675
{
2676
    AVBPrint pbuf;
2677
    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
2678

2679
    writer_print_section_header(w, SECTION_ID_PROGRAM_VERSION);
2680
    print_str("version", FFMPEG_VERSION);
2681
    print_fmt("copyright", "Copyright (c) %d-%d the FFmpeg developers",
2682
              program_birth_year, CONFIG_THIS_YEAR);
2683
    print_str("compiler_ident", CC_IDENT);
2684
    print_str("configuration", FFMPEG_CONFIGURATION);
2685
    writer_print_section_footer(w);
2686

2687
    av_bprint_finalize(&pbuf, NULL);
2688
}
2689

2690
#define SHOW_LIB_VERSION(libname, LIBNAME)                              \
2691
    do {                                                                \
2692
        if (CONFIG_##LIBNAME) {                                         \
2693
            unsigned int version = libname##_version();                 \
2694
            writer_print_section_header(w, SECTION_ID_LIBRARY_VERSION); \
2695
            print_str("name",    "lib" #libname);                       \
2696
            print_int("major",   LIB##LIBNAME##_VERSION_MAJOR);         \
2697
            print_int("minor",   LIB##LIBNAME##_VERSION_MINOR);         \
2698
            print_int("micro",   LIB##LIBNAME##_VERSION_MICRO);         \
2699
            print_int("version", version);                              \
2700
            print_str("ident",   LIB##LIBNAME##_IDENT);                 \
2701
            writer_print_section_footer(w);                             \
2702
        }                                                               \
2703
    } while (0)
2704

2705
static void ffprobe_show_library_versions(WriterContext *w)
2706
{
2707
    writer_print_section_header(w, SECTION_ID_LIBRARY_VERSIONS);
2708
    SHOW_LIB_VERSION(avutil,     AVUTIL);
2709
    SHOW_LIB_VERSION(avcodec,    AVCODEC);
2710
    SHOW_LIB_VERSION(avformat,   AVFORMAT);
2711
    SHOW_LIB_VERSION(avdevice,   AVDEVICE);
2712
    SHOW_LIB_VERSION(avfilter,   AVFILTER);
2713
    SHOW_LIB_VERSION(swscale,    SWSCALE);
2714
    SHOW_LIB_VERSION(swresample, SWRESAMPLE);
2715
    SHOW_LIB_VERSION(postproc,   POSTPROC);
2716
    writer_print_section_footer(w);
2717
}
2718

2719
#define PRINT_PIX_FMT_FLAG(flagname, name)                                \
2720
    do {                                                                  \
2721
        print_int(name, !!(pixdesc->flags & AV_PIX_FMT_FLAG_##flagname)); \
2722
    } while (0)
2723

2724
static void ffprobe_show_pixel_formats(WriterContext *w)
2725
{
2726
    const AVPixFmtDescriptor *pixdesc = NULL;
2727
    int i, n;
2728

2729
    writer_print_section_header(w, SECTION_ID_PIXEL_FORMATS);
2730
    while (pixdesc = av_pix_fmt_desc_next(pixdesc)) {
2731
        writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT);
2732
        print_str("name", pixdesc->name);
2733
        print_int("nb_components", pixdesc->nb_components);
2734
        if ((pixdesc->nb_components >= 3) && !(pixdesc->flags & AV_PIX_FMT_FLAG_RGB)) {
2735
            print_int    ("log2_chroma_w", pixdesc->log2_chroma_w);
2736
            print_int    ("log2_chroma_h", pixdesc->log2_chroma_h);
2737
        } else {
2738
            print_str_opt("log2_chroma_w", "N/A");
2739
            print_str_opt("log2_chroma_h", "N/A");
2740
        }
2741
        n = av_get_bits_per_pixel(pixdesc);
2742
        if (n) print_int    ("bits_per_pixel", n);
2743
        else   print_str_opt("bits_per_pixel", "N/A");
2744
        if (do_show_pixel_format_flags) {
2745
            writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_FLAGS);
2746
            PRINT_PIX_FMT_FLAG(BE,        "big_endian");
2747
            PRINT_PIX_FMT_FLAG(PAL,       "palette");
2748
            PRINT_PIX_FMT_FLAG(BITSTREAM, "bitstream");
2749
            PRINT_PIX_FMT_FLAG(HWACCEL,   "hwaccel");
2750
            PRINT_PIX_FMT_FLAG(PLANAR,    "planar");
2751
            PRINT_PIX_FMT_FLAG(RGB,       "rgb");
2752
            PRINT_PIX_FMT_FLAG(PSEUDOPAL, "pseudopal");
2753
            PRINT_PIX_FMT_FLAG(ALPHA,     "alpha");
2754
            writer_print_section_footer(w);
2755
        }
2756
        if (do_show_pixel_format_components && (pixdesc->nb_components > 0)) {
2757
            writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_COMPONENTS);
2758
            for (i = 0; i < pixdesc->nb_components; i++) {
2759
                writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_COMPONENT);
2760
                print_int("index", i + 1);
2761
                print_int("bit_depth", pixdesc->comp[i].depth);
2762
                writer_print_section_footer(w);
2763
            }
2764
            writer_print_section_footer(w);
2765
        }
2766
        writer_print_section_footer(w);
2767
    }
2768
    writer_print_section_footer(w);
2769
}
2770

2771
static int opt_format(void *optctx, const char *opt, const char *arg)
2772
{
2773
    iformat = av_find_input_format(arg);
2774
    if (!iformat) {
2775
        av_log(NULL, AV_LOG_ERROR, "Unknown input format: %s\n", arg);
2776
        return AVERROR(EINVAL);
2777
    }
2778
    return 0;
2779
}
2780

2781
static inline void mark_section_show_entries(SectionID section_id,
2782
                                             int show_all_entries, AVDictionary *entries)
2783
{
2784
    struct section *section = &sections[section_id];
2785

2786
    section->show_all_entries = show_all_entries;
2787
    if (show_all_entries) {
2788
        SectionID *id;
2789
        for (id = section->children_ids; *id != -1; id++)
2790
            mark_section_show_entries(*id, show_all_entries, entries);
2791
    } else {
2792
        av_dict_copy(&section->entries_to_show, entries, 0);
2793
    }
2794
}
2795

2796
static int match_section(const char *section_name,
2797
                         int show_all_entries, AVDictionary *entries)
2798
{
2799
    int i, ret = 0;
2800

2801
    for (i = 0; i < FF_ARRAY_ELEMS(sections); i++) {
2802
        const struct section *section = &sections[i];
2803
        if (!strcmp(section_name, section->name) ||
2804
            (section->unique_name && !strcmp(section_name, section->unique_name))) {
2805
            av_log(NULL, AV_LOG_DEBUG,
2806
                   "'%s' matches section with unique name '%s'\n", section_name,
2807
                   (char *)av_x_if_null(section->unique_name, section->name));
2808
            ret++;
2809
            mark_section_show_entries(section->id, show_all_entries, entries);
2810
        }
2811
    }
2812
    return ret;
2813
}
2814

2815
static int opt_show_entries(void *optctx, const char *opt, const char *arg)
2816
{
2817
    const char *p = arg;
2818
    int ret = 0;
2819

2820
    while (*p) {
2821
        AVDictionary *entries = NULL;
2822
        char *section_name = av_get_token(&p, "=:");
2823
        int show_all_entries = 0;
2824

2825
        if (!section_name) {
2826
            av_log(NULL, AV_LOG_ERROR,
2827
                   "Missing section name for option '%s'\n", opt);
2828
            return AVERROR(EINVAL);
2829
        }
2830

2831
        if (*p == '=') {
2832
            p++;
2833
            while (*p && *p != ':') {
2834
                char *entry = av_get_token(&p, ",:");
2835
                if (!entry)
2836
                    break;
2837
                av_log(NULL, AV_LOG_VERBOSE,
2838
                       "Adding '%s' to the entries to show in section '%s'\n",
2839
                       entry, section_name);
2840
                av_dict_set(&entries, entry, "", AV_DICT_DONT_STRDUP_KEY);
2841
                if (*p == ',')
2842
                    p++;
2843
            }
2844
        } else {
2845
            show_all_entries = 1;
2846
        }
2847

2848
        ret = match_section(section_name, show_all_entries, entries);
2849
        if (ret == 0) {
2850
            av_log(NULL, AV_LOG_ERROR, "No match for section '%s'\n", section_name);
2851
            ret = AVERROR(EINVAL);
2852
        }
2853
        av_dict_free(&entries);
2854
        av_free(section_name);
2855

2856
        if (ret <= 0)
2857
            break;
2858
        if (*p)
2859
            p++;
2860
    }
2861

2862
    return ret;
2863
}
2864

2865
static int opt_show_format_entry(void *optctx, const char *opt, const char *arg)
2866
{
2867
    char *buf = av_asprintf("format=%s", arg);
2868
    int ret;
2869

2870
    if (!buf)
2871
        return AVERROR(ENOMEM);
2872

2873
    av_log(NULL, AV_LOG_WARNING,
2874
           "Option '%s' is deprecated, use '-show_entries format=%s' instead\n",
2875
           opt, arg);
2876
    ret = opt_show_entries(optctx, opt, buf);
2877
    av_free(buf);
2878
    return ret;
2879
}
2880

2881
static void opt_input_file(void *optctx, const char *arg)
2882
{
2883
    if (input_filename) {
2884
        av_log(NULL, AV_LOG_ERROR,
2885
                "Argument '%s' provided as input filename, but '%s' was already specified.\n",
2886
                arg, input_filename);
2887
        exit_program(1);
2888
    }
2889
    if (!strcmp(arg, "-"))
2890
        arg = "pipe:";
2891
    input_filename = arg;
2892
}
2893

2894
static int opt_input_file_i(void *optctx, const char *opt, const char *arg)
2895
{
2896
    opt_input_file(optctx, arg);
2897
    return 0;
2898
}
2899

2900
void show_help_default(const char *opt, const char *arg)
2901
{
2902
    av_log_set_callback(log_callback_help);
2903
    show_usage();
2904
    show_help_options(options, "Main options:", 0, 0, 0);
2905
    printf("\n");
2906

2907
    show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
2908
}
2909

2910
/**
2911
 * Parse interval specification, according to the format:
2912
 * INTERVAL ::= [START|+START_OFFSET][%[END|+END_OFFSET]]
2913
 * INTERVALS ::= INTERVAL[,INTERVALS]
2914
*/
2915
static int parse_read_interval(const char *interval_spec,
2916
                               ReadInterval *interval)
2917
{
2918
    int ret = 0;
2919
    char *next, *p, *spec = av_strdup(interval_spec);
2920
    if (!spec)
2921
        return AVERROR(ENOMEM);
2922

2923
    if (!*spec) {
2924
        av_log(NULL, AV_LOG_ERROR, "Invalid empty interval specification\n");
2925
        ret = AVERROR(EINVAL);
2926
        goto end;
2927
    }
2928

2929
    p = spec;
2930
    next = strchr(spec, '%');
2931
    if (next)
2932
        *next++ = 0;
2933

2934
    /* parse first part */
2935
    if (*p) {
2936
        interval->has_start = 1;
2937

2938
        if (*p == '+') {
2939
            interval->start_is_offset = 1;
2940
            p++;
2941
        } else {
2942
            interval->start_is_offset = 0;
2943
        }
2944

2945
        ret = av_parse_time(&interval->start, p, 1);
2946
        if (ret < 0) {
2947
            av_log(NULL, AV_LOG_ERROR, "Invalid interval start specification '%s'\n", p);
2948
            goto end;
2949
        }
2950
    } else {
2951
        interval->has_start = 0;
2952
    }
2953

2954
    /* parse second part */
2955
    p = next;
2956
    if (p && *p) {
2957
        int64_t us;
2958
        interval->has_end = 1;
2959

2960
        if (*p == '+') {
2961
            interval->end_is_offset = 1;
2962
            p++;
2963
        } else {
2964
            interval->end_is_offset = 0;
2965
        }
2966

2967
        if (interval->end_is_offset && *p == '#') {
2968
            long long int lli;
2969
            char *tail;
2970
            interval->duration_frames = 1;
2971
            p++;
2972
            lli = strtoll(p, &tail, 10);
2973
            if (*tail || lli < 0) {
2974
                av_log(NULL, AV_LOG_ERROR,
2975
                       "Invalid or negative value '%s' for duration number of frames\n", p);
2976
                goto end;
2977
            }
2978
            interval->end = lli;
2979
        } else {
2980
            ret = av_parse_time(&us, p, 1);
2981
            if (ret < 0) {
2982
                av_log(NULL, AV_LOG_ERROR, "Invalid interval end/duration specification '%s'\n", p);
2983
                goto end;
2984
            }
2985
            interval->end = us;
2986
        }
2987
    } else {
2988
        interval->has_end = 0;
2989
    }
2990

2991
end:
2992
    av_free(spec);
2993
    return ret;
2994
}
2995

2996
static int parse_read_intervals(const char *intervals_spec)
2997
{
2998
    int ret, n, i;
2999
    char *p, *spec = av_strdup(intervals_spec);
3000
    if (!spec)
3001
        return AVERROR(ENOMEM);
3002

3003
    /* preparse specification, get number of intervals */
3004
    for (n = 0, p = spec; *p; p++)
3005
        if (*p == ',')
3006
            n++;
3007
    n++;
3008

3009
    read_intervals = av_malloc_array(n, sizeof(*read_intervals));
3010
    if (!read_intervals) {
3011
        ret = AVERROR(ENOMEM);
3012
        goto end;
3013
    }
3014
    read_intervals_nb = n;
3015

3016
    /* parse intervals */
3017
    p = spec;
3018
    for (i = 0; p; i++) {
3019
        char *next;
3020

3021
        av_assert0(i < read_intervals_nb);
3022
        next = strchr(p, ',');
3023
        if (next)
3024
            *next++ = 0;
3025

3026
        read_intervals[i].id = i;
3027
        ret = parse_read_interval(p, &read_intervals[i]);
3028
        if (ret < 0) {
3029
            av_log(NULL, AV_LOG_ERROR, "Error parsing read interval #%d '%s'\n",
3030
                   i, p);
3031
            goto end;
3032
        }
3033
        av_log(NULL, AV_LOG_VERBOSE, "Parsed log interval ");
3034
        log_read_interval(&read_intervals[i], NULL, AV_LOG_VERBOSE);
3035
        p = next;
3036
    }
3037
    av_assert0(i == read_intervals_nb);
3038

3039
end:
3040
    av_free(spec);
3041
    return ret;
3042
}
3043

3044
static int opt_read_intervals(void *optctx, const char *opt, const char *arg)
3045
{
3046
    return parse_read_intervals(arg);
3047
}
3048

3049
static int opt_pretty(void *optctx, const char *opt, const char *arg)
3050
{
3051
    show_value_unit              = 1;
3052
    use_value_prefix             = 1;
3053
    use_byte_value_binary_prefix = 1;
3054
    use_value_sexagesimal_format = 1;
3055
    return 0;
3056
}
3057

3058
static void print_section(SectionID id, int level)
3059
{
3060
    const SectionID *pid;
3061
    const struct section *section = &sections[id];
3062
    printf("%c%c%c",
3063
           section->flags & SECTION_FLAG_IS_WRAPPER           ? 'W' : '.',
3064
           section->flags & SECTION_FLAG_IS_ARRAY             ? 'A' : '.',
3065
           section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS  ? 'V' : '.');
3066
    printf("%*c  %s", level * 4, ' ', section->name);
3067
    if (section->unique_name)
3068
        printf("/%s", section->unique_name);
3069
    printf("\n");
3070

3071
    for (pid = section->children_ids; *pid != -1; pid++)
3072
        print_section(*pid, level+1);
3073
}
3074

3075
static int opt_sections(void *optctx, const char *opt, const char *arg)
3076
{
3077
    printf("Sections:\n"
3078
           "W.. = Section is a wrapper (contains other sections, no local entries)\n"
3079
           ".A. = Section contains an array of elements of the same type\n"
3080
           "..V = Section may contain a variable number of fields with variable keys\n"
3081
           "FLAGS NAME/UNIQUE_NAME\n"
3082
           "---\n");
3083
    print_section(SECTION_ID_ROOT, 0);
3084
    return 0;
3085
}
3086

3087
static int opt_show_versions(const char *opt, const char *arg)
3088
{
3089
    mark_section_show_entries(SECTION_ID_PROGRAM_VERSION, 1, NULL);
3090
    mark_section_show_entries(SECTION_ID_LIBRARY_VERSION, 1, NULL);
3091
    return 0;
3092
}
3093

3094
#define DEFINE_OPT_SHOW_SECTION(section, target_section_id)             \
3095
    static int opt_show_##section(const char *opt, const char *arg)     \
3096
    {                                                                   \
3097
        mark_section_show_entries(SECTION_ID_##target_section_id, 1, NULL); \
3098
        return 0;                                                       \
3099
    }
3100

3101
DEFINE_OPT_SHOW_SECTION(chapters,         CHAPTERS)
3102
DEFINE_OPT_SHOW_SECTION(error,            ERROR)
3103
DEFINE_OPT_SHOW_SECTION(format,           FORMAT)
3104
DEFINE_OPT_SHOW_SECTION(frames,           FRAMES)
3105
DEFINE_OPT_SHOW_SECTION(library_versions, LIBRARY_VERSIONS)
3106
DEFINE_OPT_SHOW_SECTION(packets,          PACKETS)
3107
DEFINE_OPT_SHOW_SECTION(pixel_formats,    PIXEL_FORMATS)
3108
DEFINE_OPT_SHOW_SECTION(program_version,  PROGRAM_VERSION)
3109
DEFINE_OPT_SHOW_SECTION(streams,          STREAMS)
3110
DEFINE_OPT_SHOW_SECTION(programs,         PROGRAMS)
3111

3112
static const OptionDef real_options[] = {
3113
#include "cmdutils_common_opts.h"
3114
    { "f", HAS_ARG, {.func_arg = opt_format}, "force format", "format" },
3115
    { "unit", OPT_BOOL, {&show_value_unit}, "show unit of the displayed values" },
3116
    { "prefix", OPT_BOOL, {&use_value_prefix}, "use SI prefixes for the displayed values" },
3117
    { "byte_binary_prefix", OPT_BOOL, {&use_byte_value_binary_prefix},
3118
      "use binary prefixes for byte units" },
3119
    { "sexagesimal", OPT_BOOL,  {&use_value_sexagesimal_format},
3120
      "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
3121
    { "pretty", 0, {.func_arg = opt_pretty},
3122
      "prettify the format of displayed values, make it more human readable" },
3123
    { "print_format", OPT_STRING | HAS_ARG, {(void*)&print_format},
3124
      "set the output printing format (available formats are: default, compact, csv, flat, ini, json, xml)", "format" },
3125
    { "of", OPT_STRING | HAS_ARG, {(void*)&print_format}, "alias for -print_format", "format" },
3126
    { "select_streams", OPT_STRING | HAS_ARG, {(void*)&stream_specifier}, "select the specified streams", "stream_specifier" },
3127
    { "sections", OPT_EXIT, {.func_arg = opt_sections}, "print sections structure and section information, and exit" },
3128
    { "show_data",    OPT_BOOL, {(void*)&do_show_data}, "show packets data" },
3129
    { "show_data_hash", OPT_STRING | HAS_ARG, {(void*)&show_data_hash}, "show packets data hash" },
3130
    { "show_error",   0, {(void*)&opt_show_error},  "show probing error" },
3131
    { "show_format",  0, {(void*)&opt_show_format}, "show format/container info" },
3132
    { "show_frames",  0, {(void*)&opt_show_frames}, "show frames info" },
3133
    { "show_format_entry", HAS_ARG, {.func_arg = opt_show_format_entry},
3134
      "show a particular entry from the format/container info", "entry" },
3135
    { "show_entries", HAS_ARG, {.func_arg = opt_show_entries},
3136
      "show a set of specified entries", "entry_list" },
3137
    { "show_packets", 0, {(void*)&opt_show_packets}, "show packets info" },
3138
    { "show_programs", 0, {(void*)&opt_show_programs}, "show programs info" },
3139
    { "show_streams", 0, {(void*)&opt_show_streams}, "show streams info" },
3140
    { "show_chapters", 0, {(void*)&opt_show_chapters}, "show chapters info" },
3141
    { "count_frames", OPT_BOOL, {(void*)&do_count_frames}, "count the number of frames per stream" },
3142
    { "count_packets", OPT_BOOL, {(void*)&do_count_packets}, "count the number of packets per stream" },
3143
    { "show_program_version",  0, {(void*)&opt_show_program_version},  "show ffprobe version" },
3144
    { "show_library_versions", 0, {(void*)&opt_show_library_versions}, "show library versions" },
3145
    { "show_versions",         0, {(void*)&opt_show_versions}, "show program and library versions" },
3146
    { "show_pixel_formats", 0, {(void*)&opt_show_pixel_formats}, "show pixel format descriptions" },
3147
    { "show_private_data", OPT_BOOL, {(void*)&show_private_data}, "show private data" },
3148
    { "private",           OPT_BOOL, {(void*)&show_private_data}, "same as show_private_data" },
3149
    { "bitexact", OPT_BOOL, {&do_bitexact}, "force bitexact output" },
3150
    { "read_intervals", HAS_ARG, {.func_arg = opt_read_intervals}, "set read intervals", "read_intervals" },
3151
    { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {.func_arg = opt_default}, "generic catch all option", "" },
3152
    { "i", HAS_ARG, {.func_arg = opt_input_file_i}, "read specified file", "input_file"},
3153
    { NULL, },
3154
};
3155

3156
static inline int check_section_show_entries(int section_id)
3157
{
3158
    int *id;
3159
    struct section *section = &sections[section_id];
3160
    if (sections[section_id].show_all_entries || sections[section_id].entries_to_show)
3161
        return 1;
3162
    for (id = section->children_ids; *id != -1; id++)
3163
        if (check_section_show_entries(*id))
3164
            return 1;
3165
    return 0;
3166
}
3167

3168
#define SET_DO_SHOW(id, varname) do {                                   \
3169
        if (check_section_show_entries(SECTION_ID_##id))                \
3170
            do_show_##varname = 1;                                      \
3171
    } while (0)
3172

3173
int main(int argc, char **argv)
3174
{
3175
    const Writer *w;
3176
    WriterContext *wctx;
3177
    char *buf;
3178
    char *w_name = NULL, *w_args = NULL;
3179
    int ret, i;
3180

3181
    av_log_set_flags(AV_LOG_SKIP_REPEATED);
3182
    register_exit(ffprobe_cleanup);
3183

3184
    options = real_options;
3185
    parse_loglevel(argc, argv, options);
3186
    av_register_all();
3187
    avformat_network_init();
3188
    init_opts();
3189
#if CONFIG_AVDEVICE
3190
    avdevice_register_all();
3191
#endif
3192

3193
    show_banner(argc, argv, options);
3194
    parse_options(NULL, argc, argv, options, opt_input_file);
3195

3196
    /* mark things to show, based on -show_entries */
3197
    SET_DO_SHOW(CHAPTERS, chapters);
3198
    SET_DO_SHOW(ERROR, error);
3199
    SET_DO_SHOW(FORMAT, format);
3200
    SET_DO_SHOW(FRAMES, frames);
3201
    SET_DO_SHOW(LIBRARY_VERSIONS, library_versions);
3202
    SET_DO_SHOW(PACKETS, packets);
3203
    SET_DO_SHOW(PIXEL_FORMATS, pixel_formats);
3204
    SET_DO_SHOW(PIXEL_FORMAT_FLAGS, pixel_format_flags);
3205
    SET_DO_SHOW(PIXEL_FORMAT_COMPONENTS, pixel_format_components);
3206
    SET_DO_SHOW(PROGRAM_VERSION, program_version);
3207
    SET_DO_SHOW(PROGRAMS, programs);
3208
    SET_DO_SHOW(STREAMS, streams);
3209
    SET_DO_SHOW(STREAM_DISPOSITION, stream_disposition);
3210
    SET_DO_SHOW(PROGRAM_STREAM_DISPOSITION, stream_disposition);
3211

3212
    SET_DO_SHOW(CHAPTER_TAGS, chapter_tags);
3213
    SET_DO_SHOW(FORMAT_TAGS, format_tags);
3214
    SET_DO_SHOW(FRAME_TAGS, frame_tags);
3215
    SET_DO_SHOW(PROGRAM_TAGS, program_tags);
3216
    SET_DO_SHOW(STREAM_TAGS, stream_tags);
3217
    SET_DO_SHOW(PACKET_TAGS, packet_tags);
3218

3219
    if (do_bitexact && (do_show_program_version || do_show_library_versions)) {
3220
        av_log(NULL, AV_LOG_ERROR,
3221
               "-bitexact and -show_program_version or -show_library_versions "
3222
               "options are incompatible\n");
3223
        ret = AVERROR(EINVAL);
3224
        goto end;
3225
    }
3226

3227
    writer_register_all();
3228

3229
    if (!print_format)
3230
        print_format = av_strdup("default");
3231
    if (!print_format) {
3232
        ret = AVERROR(ENOMEM);
3233
        goto end;
3234
    }
3235
    w_name = av_strtok(print_format, "=", &buf);
3236
    w_args = buf;
3237

3238
    if (show_data_hash) {
3239
        if ((ret = av_hash_alloc(&hash, show_data_hash)) < 0) {
3240
            if (ret == AVERROR(EINVAL)) {
3241
                const char *n;
3242
                av_log(NULL, AV_LOG_ERROR,
3243
                       "Unknown hash algorithm '%s'\nKnown algorithms:",
3244
                       show_data_hash);
3245
                for (i = 0; (n = av_hash_names(i)); i++)
3246
                    av_log(NULL, AV_LOG_ERROR, " %s", n);
3247
                av_log(NULL, AV_LOG_ERROR, "\n");
3248
            }
3249
            goto end;
3250
        }
3251
    }
3252

3253
    w = writer_get_by_name(w_name);
3254
    if (!w) {
3255
        av_log(NULL, AV_LOG_ERROR, "Unknown output format with name '%s'\n", w_name);
3256
        ret = AVERROR(EINVAL);
3257
        goto end;
3258
    }
3259

3260
    if ((ret = writer_open(&wctx, w, w_args,
3261
                           sections, FF_ARRAY_ELEMS(sections))) >= 0) {
3262
        if (w == &xml_writer)
3263
            wctx->string_validation_utf8_flags |= AV_UTF8_FLAG_EXCLUDE_XML_INVALID_CONTROL_CODES;
3264

3265
        writer_print_section_header(wctx, SECTION_ID_ROOT);
3266

3267
        if (do_show_program_version)
3268
            ffprobe_show_program_version(wctx);
3269
        if (do_show_library_versions)
3270
            ffprobe_show_library_versions(wctx);
3271
        if (do_show_pixel_formats)
3272
            ffprobe_show_pixel_formats(wctx);
3273

3274
        if (!input_filename &&
3275
            ((do_show_format || do_show_programs || do_show_streams || do_show_chapters || do_show_packets || do_show_error) ||
3276
             (!do_show_program_version && !do_show_library_versions && !do_show_pixel_formats))) {
3277
            show_usage();
3278
            av_log(NULL, AV_LOG_ERROR, "You have to specify one input file.\n");
3279
            av_log(NULL, AV_LOG_ERROR, "Use -h to get full help or, even better, run 'man %s'.\n", program_name);
3280
            ret = AVERROR(EINVAL);
3281
        } else if (input_filename) {
3282
            ret = probe_file(wctx, input_filename);
3283
            if (ret < 0 && do_show_error)
3284
                show_error(wctx, ret);
3285
        }
3286

3287
        writer_print_section_footer(wctx);
3288
        writer_close(&wctx);
3289
    }
3290

3291
end:
3292
    av_freep(&print_format);
3293
    av_freep(&read_intervals);
3294
    av_hash_freep(&hash);
3295

3296
    uninit_opts();
3297
    for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)
3298
        av_dict_free(&(sections[i].entries_to_show));
3299

3300
    avformat_network_deinit();
3301

3302
    return ret < 0;
3303
}
3304

3305
Product

Resources

Company
