FFmpeg
Data Structures | Macros | Functions | Variables
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/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 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, int track_idx)
 
static int flv_same_audio_codec (AVCodecParameters *apar, int flags, uint32_t codec_fourcc)
 
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, 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.

◆ 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 833 of file flvdec.c.

◆ TYPE_ONCAPTION

#define TYPE_ONCAPTION   2

Definition at line 834 of file flvdec.c.

◆ TYPE_ONCAPTIONINFO

#define TYPE_ONCAPTIONINFO   3

Definition at line 835 of file flvdec.c.

◆ TYPE_UNKNOWN

#define TYPE_UNKNOWN   9

Definition at line 836 of file flvdec.c.

◆ OFFSET

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

Definition at line 1904 of file flvdec.c.

◆ VD

#define VD   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

Definition at line 1905 of file flvdec.c.

Function Documentation

◆ probe()

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

Definition at line 119 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 138 of file flvdec.c.

◆ live_flv_probe()

static int live_flv_probe ( const AVProbeData *  p)
static

Definition at line 143 of file flvdec.c.

◆ kux_probe()

static int kux_probe ( const AVProbeData *  p)
static

Definition at line 148 of file flvdec.c.

◆ add_keyframes_index()

static void add_keyframes_index ( AVFormatContext *  s)
static

Definition at line 162 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 193 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 227 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 299 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 378 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 409 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 480 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 500 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 595 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 838 of file flvdec.c.

Referenced by flv_read_packet().

◆ flv_read_header()

static int flv_read_header ( AVFormatContext *  s)
static

Definition at line 895 of file flvdec.c.

◆ flv_read_close()

static int flv_read_close ( AVFormatContext *  s)
static

Definition at line 934 of file flvdec.c.

◆ flv_get_extradata()

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

Definition at line 950 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 962 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 1011 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 1026 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 1075 of file flvdec.c.

Referenced by flv_read_packet().

◆ resync()

static int resync ( AVFormatContext *  s)
static

Definition at line 1142 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 1184 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 1212 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 1282 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 1338 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 1896 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 1906 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 1913 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 1920 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 1933 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 1947 of file flvdec.c.

flv_read_packet
static int flv_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: flvdec.c:1338
options
static const AVOption options[]
Definition: flvdec.c:1906
OFFSET
#define OFFSET(x)
Definition: flvdec.c:1904
read_seek
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:151
flv_read_seek
static int flv_read_seek(AVFormatContext *s, int stream_index, int64_t ts, int flags)
Definition: flvdec.c:1896
read_close
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:143
VD
#define VD
Definition: flvdec.c:1905
read_packet
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_read_callback.c:42
live_flv_probe
static int live_flv_probe(const AVProbeData *p)
Definition: flvdec.c:143
flv_read_close
static int flv_read_close(AVFormatContext *s)
Definition: flvdec.c:934
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
NULL
#define NULL
Definition: coverity.c:32
flv_read_header
static int flv_read_header(AVFormatContext *s)
Definition: flvdec.c:895
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:237
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:94
FLVContext
Definition: flvdec.c:71
read_header
static int read_header(FFV1Context *f, RangeCoder *c)
Definition: ffv1dec.c:553
kux_probe
static int kux_probe(const AVProbeData *p)
Definition: flvdec.c:148
flv_probe
static int flv_probe(const AVProbeData *p)
Definition: flvdec.c:138
flv_kux_class
static const AVClass flv_kux_class
Definition: flvdec.c:1913
read_probe
static int read_probe(const AVProbeData *p)
Definition: cdg.c:30
AVFMT_TS_DISCONT
#define AVFMT_TS_DISCONT
Format allows timestamp discontinuities.
Definition: avformat.h:481
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Underlying C type is int.
Definition: opt.h:327
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