concatdec.c File Reference

#include "libavutil/attributes_internal.h"
#include "libavutil/avstring.h"
#include "libavutil/avassert.h"
#include "libavutil/bprint.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "libavutil/timestamp.h"
#include "libavcodec/codec_desc.h"
#include "libavcodec/bsf.h"
#include "avformat.h"
#include "avio_internal.h"
#include "demux.h"
#include "internal.h"
#include "url.h"

Go to the source code of this file.

Data Structures
struct	ConcatStream
struct	ConcatFile
struct	ConcatContext
struct	ParseSyntax

Macros
#define	FAIL(retcode)
#define	MAX_ARGS   3
#define	NEEDS_UNSAFE   (1 << 0)
#define	NEEDS_FILE   (1 << 1)
#define	NEEDS_STREAM   (1 << 2)
#define	OFFSET(x)
#define	DEC   AV_OPT_FLAG_DECODING_PARAM

Enumerations
enum	ConcatMatchMode { MATCH_ONE_TO_ONE , MATCH_EXACT_ID }
enum	ParseDirective {   DIR_FFCONCAT , DIR_FILE , DIR_DURATION , DIR_INPOINT ,   DIR_OUTPOINT , DIR_FPMETA , DIR_FPMETAS , DIR_OPTION ,   DIR_STREAM , DIR_EXSID , DIR_STMETA , DIR_STCODEC ,   DIR_STEDATA , DIR_CHAPTER }

Functions
static int	concat_probe (const AVProbeData *probe)
static char *	get_keyword (uint8_t **cursor)
static int	safe_filename (const char *f)
static int	add_file (AVFormatContext *avf, char *filename, ConcatFile **rfile, unsigned *nb_files_alloc)
static int	copy_stream_props (AVStream *st, AVStream *source_st)
static int	detect_stream_specific (AVFormatContext *avf, int idx)
static int	match_streams_one_to_one (AVFormatContext *avf)
static int	match_streams_exact_id (AVFormatContext *avf)
static int	match_streams (AVFormatContext *avf)
static int64_t	get_best_effort_duration (ConcatFile *file, AVFormatContext *avf)
static int	probe_file (AVFormatContext *avf, unsigned fileno)
static int	open_file (AVFormatContext *avf, unsigned fileno)
static int	concat_read_close (AVFormatContext *avf)
static int	concat_parse_script (AVFormatContext *avf)
static int	compare_chapter_starts (const void *a, const void *b)
static int	add_file_chapters (AVFormatContext *avf)
static int	concat_read_header (AVFormatContext *avf)
static int	open_next_file (AVFormatContext *avf)
static int	filter_packet (AVFormatContext *avf, ConcatStream *cs, AVPacket *pkt)
static int	packet_after_outpoint (ConcatContext *cat, AVPacket *pkt)
static int	concat_read_packet (AVFormatContext *avf, AVPacket *pkt)
static int	try_seek (AVFormatContext *avf, int stream, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
static int	real_seek (AVFormatContext *avf, int stream, int64_t min_ts, int64_t ts, int64_t max_ts, int flags, AVFormatContext *cur_avf)
static int	concat_seek (AVFormatContext *avf, int stream, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)

Variables
static const ParseSyntax	syntax []
static const AVOption	options []
static const AVClass	concat_class
const FFInputFormat	ff_concat_demuxer

Macro Definition Documentation

FAIL

#define FAIL

(

retcode

)

Value:

do { ret = (retcode); goto fail; } while(0)

Definition at line 115 of file concatdec.c.

Referenced by add_file(), and concat_parse_script().

MAX_ARGS

#define MAX_ARGS   3

Definition at line 428 of file concatdec.c.

Referenced by concat_parse_script().

NEEDS_UNSAFE

#define NEEDS_UNSAFE   (1 << 0)

Definition at line 429 of file concatdec.c.

Referenced by concat_parse_script().

NEEDS_FILE

#define NEEDS_FILE   (1 << 1)

Definition at line 430 of file concatdec.c.

Referenced by concat_parse_script().

NEEDS_STREAM

#define NEEDS_STREAM   (1 << 2)

Definition at line 431 of file concatdec.c.

Referenced by concat_parse_script().

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(ConcatContext, x)

Definition at line 989 of file concatdec.c.

DEC

#define DEC   AV_OPT_FLAG_DECODING_PARAM

Definition at line 990 of file concatdec.c.

Enumeration Type Documentation

ConcatMatchMode

enum ConcatMatchMode

Enumerator
MATCH_ONE_TO_ONE
MATCH_EXACT_ID

Definition at line 38 of file concatdec.c.

ParseDirective

enum ParseDirective

Enumerator
DIR_FFCONCAT
DIR_FILE
DIR_DURATION
DIR_INPOINT
DIR_OUTPOINT
DIR_FPMETA
DIR_FPMETAS
DIR_OPTION
DIR_STREAM
DIR_EXSID
DIR_STMETA
DIR_STCODEC
DIR_STEDATA
DIR_CHAPTER

Definition at line 439 of file concatdec.c.

Function Documentation

concat_probe()

static int concat_probe ( const AVProbeData * probe )

static

Definition at line 79 of file concatdec.c.

get_keyword()

static char * get_keyword ( uint8_t ** cursor )

static

Definition at line 85 of file concatdec.c.

Referenced by concat_parse_script().

safe_filename()

static int safe_filename ( const char * f )

static

Definition at line 96 of file concatdec.c.

add_file()

static int add_file ( AVFormatContext * avf, char * filename, ConcatFile ** rfile, unsigned * nb_files_alloc )

static

Definition at line 117 of file concatdec.c.

Referenced by concat_parse_script().

copy_stream_props()

static int copy_stream_props ( AVStream * st, AVStream * source_st )

static

Definition at line 176 of file concatdec.c.

Referenced by match_streams_exact_id(), and match_streams_one_to_one().

detect_stream_specific()

static int detect_stream_specific ( AVFormatContext * avf, int idx )

static

Definition at line 203 of file concatdec.c.

Referenced by match_streams().

match_streams_one_to_one()

static int match_streams_one_to_one ( AVFormatContext * avf )

static

Definition at line 245 of file concatdec.c.

Referenced by match_streams().

match_streams_exact_id()

static int match_streams_exact_id ( AVFormatContext * avf )

static

Definition at line 265 of file concatdec.c.

Referenced by match_streams().

match_streams()

static int match_streams ( AVFormatContext * avf )

static

Definition at line 287 of file concatdec.c.

Referenced by concat_read_packet(), and open_file().

get_best_effort_duration()

static int64_t get_best_effort_duration ( ConcatFile * file, AVFormatContext * avf )

static

Definition at line 324 of file concatdec.c.

Referenced by open_next_file(), and probe_file().

probe_file()

static int probe_file ( AVFormatContext * avf, unsigned fileno )

static

Definition at line 338 of file concatdec.c.

Referenced by add_file_chapters(), and open_file().

open_file()

static int open_file ( AVFormatContext * avf, unsigned fileno )

static

Definition at line 384 of file concatdec.c.

Referenced by concat_read_header(), open_files(), open_next_file(), and real_seek().

concat_read_close()

static int concat_read_close ( AVFormatContext * avf )

static

Definition at line 407 of file concatdec.c.

concat_parse_script()

static int concat_parse_script ( AVFormatContext * avf )

static

Definition at line 473 of file concatdec.c.

Referenced by concat_read_header().

compare_chapter_starts()

static int compare_chapter_starts ( const void * a, const void * b )

static

Definition at line 673 of file concatdec.c.

Referenced by add_file_chapters().

add_file_chapters()

static int add_file_chapters ( AVFormatContext * avf )

static

Definition at line 680 of file concatdec.c.

Referenced by concat_read_header().

concat_read_header()

static int concat_read_header ( AVFormatContext * avf )

static

Definition at line 715 of file concatdec.c.

open_next_file()

static int open_next_file ( AVFormatContext * avf )

static

Definition at line 762 of file concatdec.c.

Referenced by concat_read_packet().

filter_packet()

static int filter_packet ( AVFormatContext * avf, ConcatStream * cs, AVPacket * pkt )

static

Definition at line 776 of file concatdec.c.

Referenced by concat_read_packet().

packet_after_outpoint()

static int packet_after_outpoint ( ConcatContext * cat, AVPacket * pkt )

static

Definition at line 801 of file concatdec.c.

Referenced by concat_read_packet().

concat_read_packet()

static int concat_read_packet ( AVFormatContext * avf, AVPacket * pkt )

static

Definition at line 810 of file concatdec.c.

try_seek()

static int try_seek ( AVFormatContext * avf, int stream, int64_t min_ts, int64_t ts, int64_t max_ts, int flags )

static

Definition at line 894 of file concatdec.c.

Referenced by real_seek().

real_seek()

static int real_seek ( AVFormatContext * avf, int stream, int64_t min_ts, int64_t ts, int64_t max_ts, int flags, AVFormatContext * cur_avf )

static

Definition at line 912 of file concatdec.c.

Referenced by concat_seek().

concat_seek()

static int concat_seek ( AVFormatContext * avf, int stream, int64_t min_ts, int64_t ts, int64_t max_ts, int flags )

static

Definition at line 962 of file concatdec.c.

Variable Documentation

syntax

const ParseSyntax syntax[]

static

Initial value:

= {
    [DIR_FFCONCAT ] = { "ffconcat",             "kk",   0 },
    [DIR_FILE     ] = { "file",                 "s",    0 },
    [DIR_DURATION ] = { "duration",             "d",    NEEDS_FILE },
    [DIR_INPOINT  ] = { "inpoint",              "d",    NEEDS_FILE },
    [DIR_OUTPOINT ] = { "outpoint",             "d",    NEEDS_FILE },
    [DIR_FPMETA   ] = { "file_packet_meta",     "ks",   NEEDS_FILE },
    [DIR_FPMETAS  ] = { "file_packet_metadata", "s",    NEEDS_FILE },
    [DIR_OPTION   ] = { "option",               "ks",   NEEDS_FILE | NEEDS_UNSAFE },
    [DIR_STREAM   ] = { "stream",               "",     0 },
    [DIR_EXSID    ] = { "exact_stream_id",      "i",    NEEDS_STREAM },
    [DIR_STMETA   ] = { "stream_meta",          "ks",   NEEDS_STREAM },
    [DIR_STCODEC  ] = { "stream_codec",         "k",    NEEDS_STREAM },
    [DIR_STEDATA  ] = { "stream_extradata",     "k",    NEEDS_STREAM },
    [DIR_CHAPTER  ] = { "chapter",              "idd",  0 },
}

Definition at line 456 of file concatdec.c.

Referenced by concat_parse_script(), ebml_parse_nest(), and is_ebml_id_valid().

options

const AVOption options[]

static

Initial value:

= {
    { "safe", "enable safe mode",
      OFFSET(safe), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, DEC },
    { "auto_convert", "automatically convert bitstream format",
      OFFSET(auto_convert), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, DEC },
    { "segment_time_metadata", "output file segment start time and duration as packet metadata",
      OFFSET(segment_time_metadata), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, DEC },
    { "chapter_per_file", "add a chapter for each file, opening them all up front to learn their durations",
      OFFSET(chapter_per_file), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, DEC },
    { NULL }
}

Definition at line 992 of file concatdec.c.

concat_class

const AVClass concat_class

static

Initial value:

= {
    .class_name = "concat demuxer",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 1004 of file concatdec.c.

ff_concat_demuxer

const FFInputFormat ff_concat_demuxer

Initial value:

= {
    .p.name         = "concat",
    .p.long_name    = NULL_IF_CONFIG_SMALL("Virtual concatenation script"),
    .p.priv_class   = &concat_class,
    .priv_data_size = sizeof(ConcatContext),
    .flags_internal = FF_INFMT_FLAG_INIT_CLEANUP,
    .read_probe     = concat_probe,
    .read_header    = concat_read_header,
    .read_packet    = concat_read_packet,
    .read_close     = concat_read_close,
    .read_seek2     = concat_seek,
}

Definition at line 1012 of file concatdec.c.