flvdec.c File Reference

#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/dict.h"
#include "libavutil/dict_internal.h"
#include "libavutil/opt.h"
#include "libavutil/internal.h"
#include "libavutil/intfloat.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mastering_display_metadata.h"
#include "libavutil/mathematics.h"
#include "avformat.h"
#include "demux.h"
#include "internal.h"
#include "flv.h"

Go to the source code of this file.

Data Structures
struct	FLVMasteringMeta
struct	FLVMetaVideoColor
struct	FLVContext
struct	amf_date

Macros
#define	VALIDATE_INDEX_TS_THRESH   2500
#define	RESYNC_BUFFER_SIZE   (1<<20)
#define	MAX_DEPTH   16
	arbitrary limit to prevent unbounded recursion More...
#define	TYPE_ONTEXTDATA   1
#define	TYPE_ONCAPTION   2
#define	TYPE_ONCAPTIONINFO   3
#define	TYPE_UNKNOWN   9
#define	OFFSET(x)   offsetof(FLVContext, x)
#define	VD   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

Functions
static int	probe (const AVProbeData *p, int live)
static int	flv_probe (const AVProbeData *p)
static int	live_flv_probe (const AVProbeData *p)
static int	kux_probe (const AVProbeData *p)
static void	add_keyframes_index (AVFormatContext *s)
static AVStream *	create_stream (AVFormatContext *s, int codec_type)
static int	flv_same_audio_codec (AVCodecParameters *apar, int flags)
static void	flv_set_audio_codec (AVFormatContext *s, AVStream *astream, AVCodecParameters *apar, int flv_codecid)
static int	flv_same_video_codec (AVCodecParameters *vpar, uint32_t flv_codecid)
static int	flv_set_video_codec (AVFormatContext *s, AVStream *vstream, uint32_t flv_codecid, int read)
static int	amf_get_string (AVIOContext *ioc, char *buffer, int buffsize)
static int	parse_keyframes_index (AVFormatContext *s, AVIOContext *ioc, int64_t max_pos)
static int	amf_parse_object (AVFormatContext *s, AVStream *astream, AVStream *vstream, const char *key, int64_t max_pos, int depth)
static int	flv_read_metabody (AVFormatContext *s, int64_t next_pos)
static int	flv_read_header (AVFormatContext *s)
static int	flv_read_close (AVFormatContext *s)
static int	flv_get_extradata (AVFormatContext *s, AVStream *st, int size)
static int	flv_queue_extradata (FLVContext *flv, AVIOContext *pb, int stream, int size)
static void	clear_index_entries (AVFormatContext *s, int64_t pos)
static int	amf_skip_tag (AVIOContext *pb, AMFDataType type, int depth)
static int	flv_data_packet (AVFormatContext *s, AVPacket *pkt, int64_t dts, int64_t next)
static int	resync (AVFormatContext *s)
static int	flv_parse_video_color_info (AVFormatContext *s, AVStream *st, int64_t next_pos)
static int	flv_update_video_color_info (AVFormatContext *s, AVStream *st)
static int	flv_read_packet (AVFormatContext *s, AVPacket *pkt)
static int	flv_read_seek (AVFormatContext *s, int stream_index, int64_t ts, int flags)

Variables
static const AVOption	options []
static const AVClass	flv_kux_class
const FFInputFormat	ff_flv_demuxer
const FFInputFormat	ff_live_flv_demuxer
const FFInputFormat	ff_kux_demuxer

Macro Definition Documentation

VALIDATE_INDEX_TS_THRESH

#define VALIDATE_INDEX_TS_THRESH   2500

Definition at line 43 of file flvdec.c.

RESYNC_BUFFER_SIZE

#define RESYNC_BUFFER_SIZE   (1<<20)

Definition at line 45 of file flvdec.c.

MAX_DEPTH

#define MAX_DEPTH   16

arbitrary limit to prevent unbounded recursion

Definition at line 47 of file flvdec.c.

TYPE_ONTEXTDATA

#define TYPE_ONTEXTDATA   1

Definition at line 782 of file flvdec.c.

TYPE_ONCAPTION

#define TYPE_ONCAPTION   2

Definition at line 783 of file flvdec.c.

TYPE_ONCAPTIONINFO

#define TYPE_ONCAPTIONINFO   3

Definition at line 784 of file flvdec.c.

TYPE_UNKNOWN

#define TYPE_UNKNOWN   9

Definition at line 785 of file flvdec.c.

OFFSET

#define OFFSET

(

x

)

offsetof(FLVContext, x)

Definition at line 1573 of file flvdec.c.

VD

#define VD   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

Definition at line 1574 of file flvdec.c.

Function Documentation

probe()

static int probe ( const AVProbeData *  p, int  live  )

static

Definition at line 116 of file flvdec.c.

Referenced by flv_probe(), and live_flv_probe().

flv_probe()

static int flv_probe ( const AVProbeData *  p )

static

Definition at line 135 of file flvdec.c.

live_flv_probe()

static int live_flv_probe ( const AVProbeData *  p )

static

Definition at line 140 of file flvdec.c.

kux_probe()

static int kux_probe ( const AVProbeData *  p )

static

Definition at line 145 of file flvdec.c.

add_keyframes_index()

static void add_keyframes_index ( AVFormatContext *  s )

static

Definition at line 159 of file flvdec.c.

Referenced by amf_parse_object(), and create_stream().

create_stream()

static AVStream* create_stream ( AVFormatContext *  s, int  codec_type  )

static

Definition at line 190 of file flvdec.c.

Referenced by amf_parse_object(), flv_data_packet(), and flv_read_packet().

flv_same_audio_codec()

static int flv_same_audio_codec ( AVCodecParameters *  apar, int  flags  )

static

Definition at line 220 of file flvdec.c.

Referenced by flv_read_packet().

flv_set_audio_codec()

static void flv_set_audio_codec ( AVFormatContext *  s, AVStream *  astream, AVCodecParameters *  apar, int  flv_codecid  )

static

Definition at line 271 of file flvdec.c.

Referenced by amf_parse_object(), and flv_read_packet().

flv_same_video_codec()

static int flv_same_video_codec ( AVCodecParameters *  vpar, uint32_t  flv_codecid  )

static

Definition at line 331 of file flvdec.c.

Referenced by flv_read_packet().

flv_set_video_codec()

static int flv_set_video_codec ( AVFormatContext *  s, AVStream *  vstream, uint32_t  flv_codecid, int  read  )

static

Definition at line 360 of file flvdec.c.

Referenced by amf_parse_object(), and flv_read_packet().

amf_get_string()

static int amf_get_string ( AVIOContext *  ioc, char *  buffer, int  buffsize  )

static

Definition at line 429 of file flvdec.c.

Referenced by amf_parse_object(), flv_data_packet(), flv_parse_video_color_info(), flv_read_metabody(), and parse_keyframes_index().

parse_keyframes_index()

static int parse_keyframes_index ( AVFormatContext *  s, AVIOContext *  ioc, int64_t  max_pos  )

static

Definition at line 449 of file flvdec.c.

Referenced by amf_parse_object().

amf_parse_object()

static int amf_parse_object ( AVFormatContext *  s, AVStream *  astream, AVStream *  vstream, const char *  key, int64_t  max_pos, int  depth  )

static

Definition at line 544 of file flvdec.c.

Referenced by flv_parse_video_color_info(), and flv_read_metabody().

flv_read_metabody()

static int flv_read_metabody ( AVFormatContext *  s, int64_t  next_pos  )

static

Definition at line 787 of file flvdec.c.

Referenced by flv_read_packet().

flv_read_header()

static int flv_read_header ( AVFormatContext *  s )

static

Definition at line 844 of file flvdec.c.

flv_read_close()

static int flv_read_close ( AVFormatContext *  s )

static

Definition at line 882 of file flvdec.c.

flv_get_extradata()

static int flv_get_extradata ( AVFormatContext *  s, AVStream *  st, int  size  )

static

Definition at line 894 of file flvdec.c.

Referenced by flv_read_packet().

flv_queue_extradata()

static int flv_queue_extradata ( FLVContext *  flv, AVIOContext *  pb, int  stream, int  size  )

static

Definition at line 906 of file flvdec.c.

Referenced by flv_read_packet().

clear_index_entries()

static void clear_index_entries ( AVFormatContext *  s, int64_t  pos  )

static

Definition at line 922 of file flvdec.c.

Referenced by flv_read_packet().

amf_skip_tag()

static int amf_skip_tag ( AVIOContext *  pb, AMFDataType  type, int  depth  )

static

Definition at line 937 of file flvdec.c.

Referenced by flv_data_packet().

flv_data_packet()

static int flv_data_packet ( AVFormatContext *  s, AVPacket *  pkt, int64_t  dts, int64_t  next  )

static

Definition at line 986 of file flvdec.c.

Referenced by flv_read_packet().

resync()

static int resync ( AVFormatContext *  s )

static

Definition at line 1053 of file flvdec.c.

Referenced by avi_read_packet(), flv_read_packet(), mxf_set_current_edit_unit(), and nut_read_packet().

flv_parse_video_color_info()

static int flv_parse_video_color_info ( AVFormatContext *  s, AVStream *  st, int64_t  next_pos  )

static

Definition at line 1095 of file flvdec.c.

Referenced by flv_read_packet().

flv_update_video_color_info()

static int flv_update_video_color_info ( AVFormatContext *  s, AVStream *  st  )

static

Definition at line 1122 of file flvdec.c.

Referenced by flv_read_packet().

flv_read_packet()

static int flv_read_packet ( AVFormatContext *  s, AVPacket *  pkt  )

static

Definition at line 1192 of file flvdec.c.

flv_read_seek()

static int flv_read_seek ( AVFormatContext *  s, int  stream_index, int64_t  ts, int  flags  )

static

Definition at line 1565 of file flvdec.c.

Variable Documentation

options

const AVOption options[]

static

Initial value:

= {
    { "flv_metadata", "Allocate streams according to the onMetaData array", OFFSET(trust_metadata), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VD },
    { "flv_full_metadata", "Dump full metadata of the onMetadata", OFFSET(dump_full_metadata), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VD },
    { "flv_ignore_prevtag", "Ignore the Size of previous tag", OFFSET(trust_datasize), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VD },
    { "missing_streams", "", OFFSET(missing_streams), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 0xFF, VD | AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY },
    { NULL }
}

Definition at line 1575 of file flvdec.c.

flv_kux_class

const AVClass flv_kux_class

static

Initial value:

= {
    .class_name = "(live) flv/kux demuxer",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 1583 of file flvdec.c.

ff_flv_demuxer

const FFInputFormat ff_flv_demuxer

Initial value:

= {
    .p.name         = "flv",
    .p.long_name    = NULL_IF_CONFIG_SMALL("FLV (Flash Video)"),
    .p.extensions   = "flv",
    .p.priv_class   = &flv_kux_class,
    .priv_data_size = sizeof(FLVContext),
    .read_probe     = flv_probe,
    .read_header    = flv_read_header,
    .read_packet    = flv_read_packet,
    .read_seek      = flv_read_seek,
    .read_close     = flv_read_close,
}

Definition at line 1590 of file flvdec.c.

ff_live_flv_demuxer

const FFInputFormat ff_live_flv_demuxer

Initial value:

= {
    .p.name         = "live_flv",
    .p.long_name    = NULL_IF_CONFIG_SMALL("live RTMP FLV (Flash Video)"),
    .p.extensions   = "flv",
    .p.priv_class   = &flv_kux_class,
    .p.flags        = AVFMT_TS_DISCONT,
    .priv_data_size = sizeof(FLVContext),
    .read_probe     = live_flv_probe,
    .read_header    = flv_read_header,
    .read_packet    = flv_read_packet,
    .read_seek      = flv_read_seek,
    .read_close     = flv_read_close,
}

Definition at line 1603 of file flvdec.c.

ff_kux_demuxer

const FFInputFormat ff_kux_demuxer

Initial value:

= {
    .p.name         = "kux",
    .p.long_name    = NULL_IF_CONFIG_SMALL("KUX (YouKu)"),
    .p.extensions   = "kux",
    .p.priv_class   = &flv_kux_class,
    .priv_data_size = sizeof(FLVContext),
    .read_probe     = kux_probe,
    .read_header    = flv_read_header,
    .read_packet    = flv_read_packet,
    .read_seek      = flv_read_seek,
    .read_close     = flv_read_close,
}

Definition at line 1617 of file flvdec.c.