flvdec.c File Reference

#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/dict.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/internal.h"
#include "libavutil/intfloat.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mastering_display_metadata.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
#define	TYPE_ONTEXTDATA   1
#define	TYPE_ONCAPTION   2
#define	TYPE_ONCAPTIONINFO   3
#define	TYPE_UNKNOWN   9
#define	OFFSET(x)
#define	VD   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

Enumerations
enum	FLVMetaColorInfoFlag { FLV_COLOR_INFO_FLAG_NONE = 0 , FLV_COLOR_INFO_FLAG_GOT = 1 , FLV_COLOR_INFO_FLAG_PARSING = 2 }

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, int track_idx)
static int	flv_same_audio_codec (AVCodecParameters *apar, int flags, uint32_t codec_fourcc)
static int	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, int multitrack)
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_parse_mod_ex_data (AVFormatContext *s, int *pkt_type, int *size, int64_t *dts)
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.

Referenced by flv_read_packet().

RESYNC_BUFFER_SIZE

#define RESYNC_BUFFER_SIZE   (1<<20)

Definition at line 45 of file flvdec.c.

Referenced by resync().

MAX_DEPTH

#define MAX_DEPTH   16

arbitrary limit to prevent unbounded recursion

Definition at line 47 of file flvdec.c.

Referenced by amf_parse_object(), amf_skip_tag(), amf_tag_skip(), make_eval_expr(), and parse_primary().

TYPE_ONTEXTDATA

#define TYPE_ONTEXTDATA   1

Definition at line 855 of file flvdec.c.

Referenced by flv_read_metabody(), and flv_read_packet().

TYPE_ONCAPTION

#define TYPE_ONCAPTION   2

Definition at line 856 of file flvdec.c.

Referenced by flv_read_metabody(), and flv_read_packet().

TYPE_ONCAPTIONINFO

#define TYPE_ONCAPTIONINFO   3

Definition at line 857 of file flvdec.c.

Referenced by flv_read_metabody().

TYPE_UNKNOWN

#define TYPE_UNKNOWN   9

Definition at line 858 of file flvdec.c.

Referenced by flv_read_metabody(), and flv_read_packet().

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(FLVContext, x)

Definition at line 1975 of file flvdec.c.

VD

#define VD   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

Definition at line 1976 of file flvdec.c.

Enumeration Type Documentation

FLVMetaColorInfoFlag

enum FLVMetaColorInfoFlag

Enumerator
FLV_COLOR_INFO_FLAG_NONE
FLV_COLOR_INFO_FLAG_GOT
FLV_COLOR_INFO_FLAG_PARSING

Definition at line 71 of file flvdec.c.

Function Documentation

probe()

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

static

Definition at line 125 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 144 of file flvdec.c.

live_flv_probe()

static int live_flv_probe ( const AVProbeData * p )

static

Definition at line 149 of file flvdec.c.

kux_probe()

static int kux_probe ( const AVProbeData * p )

static

Definition at line 154 of file flvdec.c.

add_keyframes_index()

static void add_keyframes_index ( AVFormatContext * s )

static

Definition at line 168 of file flvdec.c.

Referenced by amf_parse_object(), and create_stream().

create_stream()

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

static

Definition at line 199 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, uint32_t codec_fourcc )

static

Definition at line 233 of file flvdec.c.

Referenced by flv_read_packet().

flv_set_audio_codec()

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

static

Definition at line 305 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 394 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 427 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 503 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 523 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 618 of file flvdec.c.

Referenced by amf_parse_object(), 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 860 of file flvdec.c.

Referenced by flv_read_packet().

flv_read_header()

static int flv_read_header ( AVFormatContext * s )

static

Definition at line 917 of file flvdec.c.

flv_read_close()

static int flv_read_close ( AVFormatContext * s )

static

Definition at line 956 of file flvdec.c.

flv_get_extradata()

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

static

Definition at line 971 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, int multitrack )

static

Definition at line 983 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 1032 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 1047 of file flvdec.c.

Referenced by amf_skip_tag(), and 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 1098 of file flvdec.c.

Referenced by flv_read_packet().

resync()

static int resync ( AVFormatContext * s )

static

Definition at line 1167 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 1209 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 1246 of file flvdec.c.

Referenced by flv_read_packet().

flv_parse_mod_ex_data()

static int flv_parse_mod_ex_data ( AVFormatContext * s, int * pkt_type, int * size, int64_t * dts )

static

Definition at line 1323 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 1379 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 1967 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 },
    { NULL }
}

Definition at line 1977 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 1984 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 1991 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 2004 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 2018 of file flvdec.c.