FFmpeg
Data Structures | Macros | Enumerations | Functions | Variables
flvenc.c File Reference
#include "libavutil/intreadwrite.h"
#include "libavutil/dict.h"
#include "libavutil/intfloat.h"
#include "libavutil/avassert.h"
#include "libavutil/mathematics.h"
#include "avio_internal.h"
#include "avio.h"
#include "avc.h"
#include "avformat.h"
#include "flv.h"
#include "internal.h"
#include "metadata.h"
#include "libavutil/opt.h"
#include "libavcodec/put_bits.h"
#include "libavcodec/aacenctab.h"

Go to the source code of this file.

Data Structures

struct  FLVFileposition
 
struct  FLVContext
 
struct  FLVStreamContext
 

Macros

#define READ_BLOCK
 

Enumerations

enum  FLVFlags {
  FLV_AAC_SEQ_HEADER_DETECT = (1 << 0), FLV_NO_SEQUENCE_END = (1 << 1), FLV_ADD_KEYFRAME_INDEX = (1 << 2), FLV_NO_METADATA = (1 << 3),
  FLV_NO_DURATION_FILESIZE = (1 << 4)
}
 

Functions

static int get_audio_flags (AVFormatContext *s, AVCodecParameters *par)
 
static void put_amf_string (AVIOContext *pb, const char *str)
 
static void put_timestamp (AVIOContext *pb, int64_t ts)
 
static void put_avc_eos_tag (AVIOContext *pb, unsigned ts)
 
static void put_amf_double (AVIOContext *pb, double d)
 
static void put_amf_byte (AVIOContext *pb, unsigned char abyte)
 
static void put_amf_dword_array (AVIOContext *pb, uint32_t dw)
 
static void put_amf_bool (AVIOContext *pb, int b)
 
static void write_metadata (AVFormatContext *s, unsigned int ts)
 
static int unsupported_codec (AVFormatContext *s, const char *type, int codec_id)
 
static void flv_write_codec_header (AVFormatContext *s, AVCodecParameters *par, int64_t ts)
 
static int flv_append_keyframe_info (AVFormatContext *s, FLVContext *flv, double ts, int64_t pos)
 
static int shift_data (AVFormatContext *s)
 
static int flv_init (struct AVFormatContext *s)
 
static int flv_write_header (AVFormatContext *s)
 
static int flv_write_trailer (AVFormatContext *s)
 
static int flv_write_packet (AVFormatContext *s, AVPacket *pkt)
 
static int flv_check_bitstream (struct AVFormatContext *s, const AVPacket *pkt)
 

Variables

static const AVCodecTag flv_video_codec_ids []
 
static const AVCodecTag flv_audio_codec_ids []
 
static const AVOption options []
 
static const AVClass flv_muxer_class
 
const AVOutputFormat ff_flv_muxer
 

Macro Definition Documentation

◆ READ_BLOCK

#define READ_BLOCK
Value:
do { \
read_size[read_buf_id] = avio_read(read_pb, read_buf[read_buf_id], metadata_size); \
read_buf_id ^= 1; \
} while (0)

Enumeration Type Documentation

◆ FLVFlags

enum FLVFlags
Enumerator
FLV_AAC_SEQ_HEADER_DETECT 
FLV_NO_SEQUENCE_END 
FLV_ADD_KEYFRAME_INDEX 
FLV_NO_METADATA 
FLV_NO_DURATION_FILESIZE 

Definition at line 66 of file flvenc.c.

Function Documentation

◆ get_audio_flags()

static int get_audio_flags ( AVFormatContext s,
AVCodecParameters par 
)
static

Definition at line 127 of file flvenc.c.

Referenced by flv_init(), flv_write_codec_header(), and flv_write_packet().

◆ put_amf_string()

static void put_amf_string ( AVIOContext pb,
const char *  str 
)
static

Definition at line 226 of file flvenc.c.

Referenced by flv_write_packet(), flv_write_trailer(), and write_metadata().

◆ put_timestamp()

static void put_timestamp ( AVIOContext pb,
int64_t  ts 
)
static

Definition at line 234 of file flvenc.c.

Referenced by flv_write_codec_header(), flv_write_packet(), and put_avc_eos_tag().

◆ put_avc_eos_tag()

static void put_avc_eos_tag ( AVIOContext pb,
unsigned  ts 
)
static

Definition at line 239 of file flvenc.c.

Referenced by flv_write_trailer().

◆ put_amf_double()

static void put_amf_double ( AVIOContext pb,
double  d 
)
static

Definition at line 251 of file flvenc.c.

Referenced by flv_write_trailer(), and write_metadata().

◆ put_amf_byte()

static void put_amf_byte ( AVIOContext pb,
unsigned char  abyte 
)
static

Definition at line 257 of file flvenc.c.

Referenced by write_metadata().

◆ put_amf_dword_array()

static void put_amf_dword_array ( AVIOContext pb,
uint32_t  dw 
)
static

Definition at line 262 of file flvenc.c.

Referenced by flv_write_trailer().

◆ put_amf_bool()

static void put_amf_bool ( AVIOContext pb,
int  b 
)
static

Definition at line 268 of file flvenc.c.

Referenced by write_metadata().

◆ write_metadata()

static void write_metadata ( AVFormatContext s,
unsigned int  ts 
)
static

Definition at line 274 of file flvenc.c.

Referenced by flv_write_header(), flv_write_packet(), and mxf_write_partition().

◆ unsupported_codec()

static int unsupported_codec ( AVFormatContext s,
const char *  type,
int  codec_id 
)
static

Definition at line 477 of file flvenc.c.

Referenced by flv_init().

◆ flv_write_codec_header()

static void flv_write_codec_header ( AVFormatContext s,
AVCodecParameters par,
int64_t  ts 
)
static

Definition at line 488 of file flvenc.c.

Referenced by flv_write_header(), and flv_write_packet().

◆ flv_append_keyframe_info()

static int flv_append_keyframe_info ( AVFormatContext s,
FLVContext flv,
double  ts,
int64_t  pos 
)
static

Definition at line 550 of file flvenc.c.

Referenced by flv_write_packet().

◆ shift_data()

static int shift_data ( AVFormatContext s)
static

Definition at line 577 of file flvenc.c.

Referenced by flv_write_trailer().

◆ flv_init()

static int flv_init ( struct AVFormatContext s)
static

Definition at line 653 of file flvenc.c.

◆ flv_write_header()

static int flv_write_header ( AVFormatContext s)
static

Definition at line 737 of file flvenc.c.

◆ flv_write_trailer()

static int flv_write_trailer ( AVFormatContext s)
static

Definition at line 774 of file flvenc.c.

◆ flv_write_packet()

static int flv_write_packet ( AVFormatContext s,
AVPacket pkt 
)
static

Definition at line 878 of file flvenc.c.

◆ flv_check_bitstream()

static int flv_check_bitstream ( struct AVFormatContext s,
const AVPacket pkt 
)
static

Definition at line 1086 of file flvenc.c.

Variable Documentation

◆ flv_video_codec_ids

const AVCodecTag flv_video_codec_ids[]
static

◆ flv_audio_codec_ids

const AVCodecTag flv_audio_codec_ids[]
static

◆ options

const AVOption options[]
static
Initial value:
= {
{ "flvflags", "FLV muxer flags", 0x42, AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "flvflags" },
{ "aac_seq_header_detect", "Put AAC sequence header based on stream data", 0, AV_OPT_TYPE_CONST, {.i64 = FLV_AAC_SEQ_HEADER_DETECT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "flvflags" },
{ "no_sequence_end", "disable sequence end for FLV", 0, AV_OPT_TYPE_CONST, {.i64 = FLV_NO_SEQUENCE_END}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "flvflags" },
{ "no_metadata", "disable metadata for FLV", 0, AV_OPT_TYPE_CONST, {.i64 = FLV_NO_METADATA}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "flvflags" },
{ "no_duration_filesize", "disable duration and filesize zero value metadata for FLV", 0, AV_OPT_TYPE_CONST, {.i64 = FLV_NO_DURATION_FILESIZE}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "flvflags" },
{ "add_keyframe_index", "Add keyframe index metadata", 0, AV_OPT_TYPE_CONST, {.i64 = FLV_ADD_KEYFRAME_INDEX}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "flvflags" },
{ NULL },
}

Definition at line 1098 of file flvenc.c.

◆ flv_muxer_class

const AVClass flv_muxer_class
static
Initial value:
= {
.class_name = "flv muxer",
.item_name = av_default_item_name,
.option = options,
}

Definition at line 1108 of file flvenc.c.

◆ ff_flv_muxer

const AVOutputFormat ff_flv_muxer
Initial value:
= {
.name = "flv",
.long_name = NULL_IF_CONFIG_SMALL("FLV (Flash Video)"),
.mime_type = "video/x-flv",
.extensions = "flv",
.priv_data_size = sizeof(FLVContext),
.audio_codec = CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_ADPCM_SWF,
.video_codec = AV_CODEC_ID_FLV1,
.codec_tag = (const AVCodecTag* const []) {
},
.priv_class = &flv_muxer_class,
}

Definition at line 1115 of file flvenc.c.

AV_CODEC_ID_PCM_S16LE
@ AV_CODEC_ID_PCM_S16LE
Definition: codec_id.h:313
AV_CODEC_ID_VP6F
@ AV_CODEC_ID_VP6F
Definition: codec_id.h:142
FLV_NO_DURATION_FILESIZE
@ FLV_NO_DURATION_FILESIZE
Definition: flvenc.c:71
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
flv_check_bitstream
static int flv_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
Definition: flvenc.c:1086
FLV_NO_SEQUENCE_END
@ FLV_NO_SEQUENCE_END
Definition: flvenc.c:68
AVFMT_VARIABLE_FPS
#define AVFMT_VARIABLE_FPS
Format allows variable fps.
Definition: avformat.h:470
FLV_CODECID_AAC
@ FLV_CODECID_AAC
Definition: flv.h:100
check_bitstream
static int check_bitstream(AVFormatContext *s, FFStream *sti, AVPacket *pkt)
Definition: mux.c:1067
AV_CODEC_ID_MPEG4
@ AV_CODEC_ID_MPEG4
Definition: codec_id.h:62
FLV_CODECID_VP6A
@ FLV_CODECID_VP6A
Definition: flv.h:108
FLV_CODECID_PCM_MULAW
@ FLV_CODECID_PCM_MULAW
Definition: flv.h:99
AV_CODEC_ID_VP6
@ AV_CODEC_ID_VP6
Definition: codec_id.h:141
FLV_CODECID_PCM
@ FLV_CODECID_PCM
Definition: flv.h:91
FLV_CODECID_NELLYMOSER
@ FLV_CODECID_NELLYMOSER
Definition: flv.h:97
AV_CODEC_ID_SPEEX
@ AV_CODEC_ID_SPEEX
Definition: codec_id.h:457
flv_write_packet
static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: flvenc.c:878
AV_CODEC_ID_PCM_S16BE
@ AV_CODEC_ID_PCM_S16BE
Definition: codec_id.h:314
AV_CODEC_ID_MP3
@ AV_CODEC_ID_MP3
preferred ID for decoding MPEG audio layer 1, 2 or 3
Definition: codec_id.h:423
FLV_CODECID_PCM_ALAW
@ FLV_CODECID_PCM_ALAW
Definition: flv.h:98
AVCodecTag
Definition: internal.h:50
AV_OPT_FLAG_ENCODING_PARAM
#define AV_OPT_FLAG_ENCODING_PARAM
a generic parameter which can be set by the user for muxing or encoding
Definition: opt.h:277
flv_write_header
static int flv_write_header(AVFormatContext *s)
Definition: flvenc.c:737
AV_CODEC_ID_PCM_MULAW
@ AV_CODEC_ID_PCM_MULAW
Definition: codec_id.h:319
AV_CODEC_ID_H264
@ AV_CODEC_ID_H264
Definition: codec_id.h:77
FLV_CODECID_H263
@ FLV_CODECID_H263
Definition: flv.h:105
AV_CODEC_ID_PCM_ALAW
@ AV_CODEC_ID_PCM_ALAW
Definition: codec_id.h:320
AV_CODEC_ID_FLASHSV2
@ AV_CODEC_ID_FLASHSV2
Definition: codec_id.h:181
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
NULL
#define NULL
Definition: coverity.c:32
write_trailer
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:98
FLV_ADD_KEYFRAME_INDEX
@ FLV_ADD_KEYFRAME_INDEX
Definition: flvenc.c:69
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
AV_CODEC_ID_FLASHSV
@ AV_CODEC_ID_FLASHSV
Definition: codec_id.h:136
FLV_CODECID_REALH263
@ FLV_CODECID_REALH263
Definition: flv.h:111
AV_CODEC_ID_VP6A
@ AV_CODEC_ID_VP6A
Definition: codec_id.h:156
FLV_CODECID_SCREEN
@ FLV_CODECID_SCREEN
Definition: flv.h:106
AV_CODEC_ID_AAC
@ AV_CODEC_ID_AAC
Definition: codec_id.h:424
flv_muxer_class
static const AVClass flv_muxer_class
Definition: flvenc.c:1108
flv_init
static int flv_init(struct AVFormatContext *s)
Definition: flvenc.c:653
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:117
FLV_CODECID_MPEG4
@ FLV_CODECID_MPEG4
Definition: flv.h:112
AV_CODEC_ID_H263
@ AV_CODEC_ID_H263
Definition: codec_id.h:54
AV_CODEC_ID_ADPCM_SWF
@ AV_CODEC_ID_ADPCM_SWF
Definition: codec_id.h:365
flv_audio_codec_ids
static const AVCodecTag flv_audio_codec_ids[]
Definition: flvenc.c:52
FLVContext
Definition: flvdec.c:47
FLV_CODECID_ADPCM
@ FLV_CODECID_ADPCM
Definition: flv.h:92
FLV_AUDIO_CODECID_OFFSET
#define FLV_AUDIO_CODECID_OFFSET
Definition: flv.h:34
flv_video_codec_ids
static const AVCodecTag flv_video_codec_ids[]
Definition: flvenc.c:39
write_packet
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:731
AVFMT_GLOBALHEADER
#define AVFMT_GLOBALHEADER
Format wants global header.
Definition: avformat.h:466
AV_CODEC_ID_NONE
@ AV_CODEC_ID_NONE
Definition: codec_id.h:48
FLV_CODECID_MP3
@ FLV_CODECID_MP3
Definition: flv.h:93
FLV_CODECID_PCM_LE
@ FLV_CODECID_PCM_LE
Definition: flv.h:94
FLV_NO_METADATA
@ FLV_NO_METADATA
Definition: flvenc.c:70
AVFMT_TS_NONSTRICT
#define AVFMT_TS_NONSTRICT
Format does not require strictly increasing timestamps, but they must still be monotonic.
Definition: avformat.h:477
FLV_CODECID_H264
@ FLV_CODECID_H264
Definition: flv.h:110
FLV_CODECID_VP6
@ FLV_CODECID_VP6
Definition: flv.h:107
FLV_CODECID_SCREEN2
@ FLV_CODECID_SCREEN2
Definition: flv.h:109
FLV_AAC_SEQ_HEADER_DETECT
@ FLV_AAC_SEQ_HEADER_DETECT
Definition: flvenc.c:67
avio_read
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:625
AV_CODEC_ID_PCM_U8
@ AV_CODEC_ID_PCM_U8
Definition: codec_id.h:318
flv_write_trailer
static int flv_write_trailer(AVFormatContext *s)
Definition: flvenc.c:774
FLV_CODECID_SPEEX
@ FLV_CODECID_SPEEX
Definition: flv.h:101
AV_OPT_TYPE_FLAGS
@ AV_OPT_TYPE_FLAGS
Definition: opt.h:223
options
static const AVOption options[]
Definition: flvenc.c:1098
write_header
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:347
AV_CODEC_ID_FLV1
@ AV_CODEC_ID_FLV1
Definition: codec_id.h:71
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:233
AV_CODEC_ID_NELLYMOSER
@ AV_CODEC_ID_NELLYMOSER
Definition: codec_id.h:455