FFmpeg: libavformat/dashenc.c File Reference

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libavformat

Data Structures | Macros | Enumerations | Functions | Variables

dashenc.c File Reference

#include "config.h"
#include "config_components.h"
#include <time.h>
#include "libavutil/avassert.h"
#include "libavutil/avutil.h"
#include "libavutil/avstring.h"
#include "libavutil/bprint.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mathematics.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "libavutil/rational.h"
#include "libavutil/time_internal.h"
#include "libavcodec/avcodec.h"
#include "av1.h"
#include "avc.h"
#include "avformat.h"
#include "avio_internal.h"
#include "hlsplaylist.h"
#include "internal.h"
#include "isom.h"
#include "mux.h"
#include "os_support.h"
#include "url.h"
#include "vpcc.h"
#include "dash.h"

Go to the source code of this file.

Data Structures

struct Segment

struct AdaptationSet

struct OutputStream

struct DASHContext

struct codec_string

Macros

#define MPD_PROFILE_DASH 1

#define MPD_PROFILE_DVB 2

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

#define E AV_OPT_FLAG_ENCODING_PARAM

Enumerations

enum SegmentType {
  PALETTE_SEGMENT = 0x14, OBJECT_SEGMENT = 0x15, PRESENTATION_SEGMENT = 0x16, WINDOW_SEGMENT = 0x17,
  DISPLAY_SEGMENT = 0x80, SEGMENT_TYPE_AUTO = 0, SEGMENT_TYPE_MP4, SEGMENT_TYPE_WEBM,
  SEGMENT_TYPE_NB, SEGMENT_TYPE_MPEGTS, SEGMENT_TYPE_FMP4
}

enum {
FRAG_TYPE_NONE = 0, FRAG_TYPE_EVERY_FRAME, FRAG_TYPE_DURATION, FRAG_TYPE_PFRAMES,
FRAG_TYPE_NB
}

Functions

static int dashenc_io_open (AVFormatContext *s, AVIOContext **pb, char *filename, AVDictionary **options)

static void dashenc_io_close (AVFormatContext *s, AVIOContext **pb, char *filename)

static const char * get_format_str (SegmentType segment_type)

static const char * get_extension_str (SegmentType type, int single_file)

static int handle_io_open_error (AVFormatContext *s, int err, char *url)

static SegmentType select_segment_type (SegmentType segment_type, enum AVCodecID codec_id)

static int init_segment_types (AVFormatContext *s)

static void set_vp9_codec_str (AVFormatContext *s, AVCodecParameters *par, AVRational *frame_rate, char *str, int size)

static void set_codec_str (AVFormatContext *s, AVCodecParameters *par, AVRational *frame_rate, char *str, int size)

static int flush_dynbuf (DASHContext *c, OutputStream *os, int *range_length)

static void set_http_options (AVDictionary **options, DASHContext *c)

static void get_hls_playlist_name (char *playlist_name, int string_size, const char *base_url, int id)

static void get_start_index_number (OutputStream *os, DASHContext *c, int *start_index, int *start_number)

static void write_hls_media_playlist (OutputStream *os, AVFormatContext *s, int representation_id, int final, char *prefetch_url)

static int flush_init_segment (AVFormatContext *s, OutputStream *os)

static void dash_free (AVFormatContext *s)

static void output_segment_list (OutputStream *os, AVIOContext *out, AVFormatContext *s, int representation_id, int final)

static char * xmlescape (const char *str)

static void write_time (AVIOContext *out, int64_t time)

static void format_date (char *buf, int size, int64_t time_us)

static int write_adaptation_set (AVFormatContext *s, AVIOContext *out, int as_index, int final)

static int add_adaptation_set (AVFormatContext *s, AdaptationSet **as, enum AVMediaType type)

static int adaptation_set_add_stream (AVFormatContext *s, int as_idx, int i)

static int parse_adaptation_sets (AVFormatContext *s)

static int write_manifest (AVFormatContext *s, int final)

static int dict_copy_entry (AVDictionary **dst, const AVDictionary *src, const char *key)

static int dash_init (AVFormatContext *s)

static int dash_write_header (AVFormatContext *s)

static int add_segment (OutputStream *os, const char *file, int64_t time, int64_t duration, int64_t start_pos, int64_t range_length, int64_t index_length, int next_exp_index)

static void write_styp (AVIOContext *pb)

static void find_index_range (AVFormatContext *s, const char *full_path, int64_t pos, int *index_length)

static int update_stream_extradata (AVFormatContext *s, OutputStream *os, AVPacket *pkt, AVRational *frame_rate)

static void dashenc_delete_file (AVFormatContext *s, char *filename)

static int dashenc_delete_segment_file (AVFormatContext *s, const char *file)

static void dashenc_delete_media_segments (AVFormatContext *s, OutputStream *os, int remove_count)

static int dash_flush (AVFormatContext *s, int final, int stream)

static int dash_parse_prft (DASHContext *c, AVPacket *pkt)

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

static int dash_write_trailer (AVFormatContext *s)

static int dash_check_bitstream (AVFormatContext *s, AVStream *st, const AVPacket *avpkt)

Variables

static const struct codec_string codecs []

static const AVOption options []

static const AVClass dash_class

const FFOutputFormat ff_dash_muxer

Macro Definition Documentation

◆ MPD_PROFILE_DASH

#define MPD_PROFILE_DASH 1

Definition at line 76 of file dashenc.c.

◆ MPD_PROFILE_DVB

#define MPD_PROFILE_DVB 2

Definition at line 77 of file dashenc.c.

◆ OFFSET

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

Definition at line 2354 of file dashenc.c.

◆ E

#define E AV_OPT_FLAG_ENCODING_PARAM

Definition at line 2355 of file dashenc.c.

Enumeration Type Documentation

◆ SegmentType

enum SegmentType

Enumerator
PALETTE_SEGMENT
OBJECT_SEGMENT
PRESENTATION_SEGMENT
WINDOW_SEGMENT
DISPLAY_SEGMENT
SEGMENT_TYPE_AUTO
SEGMENT_TYPE_MP4
SEGMENT_TYPE_WEBM
SEGMENT_TYPE_NB
SEGMENT_TYPE_MPEGTS
SEGMENT_TYPE_FMP4

Definition at line 61 of file dashenc.c.

◆ anonymous enum

anonymous enum

Enumerator
FRAG_TYPE_NONE
FRAG_TYPE_EVERY_FRAME
FRAG_TYPE_DURATION
FRAG_TYPE_PFRAMES
FRAG_TYPE_NB

Definition at line 68 of file dashenc.c.

Function Documentation

◆ dashenc_io_open()

static int dashenc_io_open ( AVFormatContext * s,

AVIOContext ** pb,

char * filename,

AVDictionary ** options

)

static

Definition at line 221 of file dashenc.c.

Referenced by dash_write_packet(), dashenc_delete_file(), write_hls_media_playlist(), and write_manifest().

◆ dashenc_io_close()

static void dashenc_io_close ( AVFormatContext * s,

AVIOContext ** pb,

char * filename

)

static

Definition at line 240 of file dashenc.c.

Referenced by dash_flush(), dashenc_delete_file(), flush_init_segment(), write_hls_media_playlist(), and write_manifest().

◆ get_format_str()

static const char* get_format_str ( SegmentType segment_type )

static

Definition at line 259 of file dashenc.c.

Referenced by init_segment_types().

◆ get_extension_str()

static const char* get_extension_str ( SegmentType type,

int single_file

)

static

Definition at line 268 of file dashenc.c.

Referenced by init_segment_types().

◆ handle_io_open_error()

static int handle_io_open_error ( AVFormatContext * s,

int err,

char * url

)

static

Definition at line 278 of file dashenc.c.

Referenced by dash_write_packet(), write_hls_media_playlist(), and write_manifest().

◆ select_segment_type()

static SegmentType select_segment_type ( SegmentType segment_type,

enum AVCodecID codec_id

)

inlinestatic

Definition at line 285 of file dashenc.c.

Referenced by init_segment_types().

◆ init_segment_types()

static int init_segment_types ( AVFormatContext * s )

static

Definition at line 299 of file dashenc.c.

Referenced by dash_init().

◆ set_vp9_codec_str()

static void set_vp9_codec_str ( AVFormatContext * s,

AVCodecParameters * par,

AVRational * frame_rate,

char * str,

int size

)

static

Definition at line 330 of file dashenc.c.

Referenced by set_codec_str().

◆ set_codec_str()

static void set_codec_str ( AVFormatContext * s,

AVCodecParameters * par,

AVRational * frame_rate,

char * str,

int size

)

static

Definition at line 345 of file dashenc.c.

Referenced by dash_init(), and update_stream_extradata().

◆ flush_dynbuf()

static int flush_dynbuf ( DASHContext * c,

OutputStream * os,

int * range_length

)

static

Definition at line 441 of file dashenc.c.

Referenced by dash_flush(), and flush_init_segment().

◆ set_http_options()

static void set_http_options ( AVDictionary ** options,

DASHContext * c

)

static

Definition at line 470 of file dashenc.c.

Referenced by dash_init(), dash_write_packet(), dashenc_delete_file(), write_hls_media_playlist(), and write_manifest().

◆ get_hls_playlist_name()

static void get_hls_playlist_name ( char * playlist_name,

int string_size,

const char * base_url,

int id

)

static

Definition at line 483 of file dashenc.c.

Referenced by dash_write_trailer(), write_hls_media_playlist(), and write_manifest().

◆ get_start_index_number()

static void get_start_index_number ( OutputStream * os,

DASHContext * c,

int * start_index,

int * start_number

)

static

Definition at line 491 of file dashenc.c.

Referenced by dash_flush(), output_segment_list(), and write_hls_media_playlist().

◆ write_hls_media_playlist()

static void write_hls_media_playlist ( OutputStream * os,

AVFormatContext * s,

int representation_id,

int final,

char * prefetch_url

)

static

Definition at line 501 of file dashenc.c.

Referenced by dash_write_packet(), and output_segment_list().

◆ flush_init_segment()

static int flush_init_segment ( AVFormatContext * s,

OutputStream * os

)

static

Definition at line 580 of file dashenc.c.

Referenced by dash_write_header(), and dash_write_packet().

◆ dash_free()

static void dash_free ( AVFormatContext * s )

static

Definition at line 598 of file dashenc.c.

◆ output_segment_list()

static void output_segment_list ( OutputStream * os,

AVIOContext * out,

AVFormatContext * s,

int representation_id,

int final

)

static

Definition at line 640 of file dashenc.c.

Referenced by write_adaptation_set().

◆ xmlescape()

static char* xmlescape ( const char * str )

static

Definition at line 715 of file dashenc.c.

Referenced by write_manifest().

◆ write_time()

static void write_time ( AVIOContext * out,

int64_t time

)

static

Definition at line 755 of file dashenc.c.

Referenced by write_manifest().

◆ format_date()

static void format_date ( char * buf,

int size,

int64_t time_us

)

static

Definition at line 771 of file dashenc.c.

Referenced by dash_write_packet(), and write_manifest().

◆ write_adaptation_set()

static int write_adaptation_set ( AVFormatContext * s,

AVIOContext * out,

int as_index,

int final

)

static

Definition at line 789 of file dashenc.c.

Referenced by write_manifest().

◆ add_adaptation_set()

static int add_adaptation_set ( AVFormatContext * s,

AdaptationSet ** as,

enum AVMediaType type

)

static

Definition at line 878 of file dashenc.c.

Referenced by parse_adaptation_sets().

◆ adaptation_set_add_stream()

static int adaptation_set_add_stream ( AVFormatContext * s,

int as_idx,

int i

)

static

Definition at line 902 of file dashenc.c.

Referenced by parse_adaptation_sets().

◆ parse_adaptation_sets()

static int parse_adaptation_sets ( AVFormatContext * s )

static

Definition at line 925 of file dashenc.c.

Referenced by dash_init().

◆ write_manifest()

static int write_manifest ( AVFormatContext * s,

int final

)

static

Definition at line 1129 of file dashenc.c.

Referenced by dash_flush(), and dash_write_packet().

◆ dict_copy_entry()

static int dict_copy_entry ( AVDictionary ** dst,

const AVDictionary * src,

const char * key

)

static

Definition at line 1365 of file dashenc.c.

Referenced by dash_init().

◆ dash_init()

static int dash_init ( AVFormatContext * s )

static

Definition at line 1373 of file dashenc.c.

◆ dash_write_header()

static int dash_write_header ( AVFormatContext * s )

static

Definition at line 1728 of file dashenc.c.

◆ add_segment()

static int add_segment ( OutputStream * os,

const char * file,

int64_t time,

int64_t duration,

int64_t start_pos,

int64_t range_length,

int64_t index_length,

int next_exp_index

)

static

Definition at line 1747 of file dashenc.c.

Referenced by dash_flush().

◆ write_styp()

static void write_styp ( AVIOContext * pb )

static

Definition at line 1787 of file dashenc.c.

Referenced by dash_write_packet().

◆ find_index_range()

static void find_index_range ( AVFormatContext * s,

const char * full_path,

int64_t pos,

int * index_length

)

static

Definition at line 1797 of file dashenc.c.

Referenced by dash_flush().

◆ update_stream_extradata()

static int update_stream_extradata ( AVFormatContext * s,

OutputStream * os,

AVPacket * pkt,

AVRational * frame_rate

)

static

Definition at line 1820 of file dashenc.c.

Referenced by dash_write_packet().

◆ dashenc_delete_file()

static void dashenc_delete_file ( AVFormatContext * s,

char * filename

)

static

Definition at line 1846 of file dashenc.c.

Referenced by dash_write_trailer(), and dashenc_delete_segment_file().

◆ dashenc_delete_segment_file()

static int dashenc_delete_segment_file ( AVFormatContext * s,

const char * file

)

static

Definition at line 1872 of file dashenc.c.

Referenced by dash_write_trailer(), and dashenc_delete_media_segments().

◆ dashenc_delete_media_segments()

static void dashenc_delete_media_segments ( AVFormatContext * s,

OutputStream * os,

int remove_count

)

inlinestatic

Definition at line 1892 of file dashenc.c.

Referenced by dash_flush(), and dash_write_trailer().

◆ dash_flush()

static int dash_flush ( AVFormatContext * s,

int final,

int stream

)

static

Definition at line 1905 of file dashenc.c.

Referenced by dash_write_packet(), and dash_write_trailer().

◆ dash_parse_prft()

static int dash_parse_prft ( DASHContext * c,

AVPacket * pkt

)

static

Definition at line 2039 of file dashenc.c.

Referenced by dash_write_packet().

◆ dash_write_packet()

static int dash_write_packet ( AVFormatContext * s,

AVPacket * pkt

)

static

Definition at line 2065 of file dashenc.c.

◆ dash_write_trailer()

static int dash_write_trailer ( AVFormatContext * s )

static

Definition at line 2291 of file dashenc.c.

◆ dash_check_bitstream()

static int dash_check_bitstream ( AVFormatContext * s,

AVStream * st,

const AVPacket * avpkt

)

static

Definition at line 2333 of file dashenc.c.

Variable Documentation

◆ codecs

const struct codec_string codecs[]

static

Initial value:

= {

{ AV_CODEC_ID_VP8, "vp8" },

{ AV_CODEC_ID_VP9, "vp9" },

{ AV_CODEC_ID_VORBIS, "vorbis" },

{ AV_CODEC_ID_OPUS, "opus" },

{ AV_CODEC_ID_FLAC, "flac" },

{ AV_CODEC_ID_NONE }

}

Referenced by ff_hls_write_stream_info(), get_codecs_sorted(), print_codecs(), set_codec_str(), and show_codecs().

◆ options

const AVOption options[]

static

Definition at line 2356 of file dashenc.c.

◆ dash_class

const AVClass dash_class

static

Initial value:

= {

.class_name = "dash muxer",

.item_name = av_default_item_name,

.option = options,

.version = LIBAVUTIL_VERSION_INT,

}

Definition at line 2405 of file dashenc.c.

◆ ff_dash_muxer

const FFOutputFormat ff_dash_muxer

Initial value:

= {

.p.name = "dash",

.p.long_name = NULL_IF_CONFIG_SMALL("DASH Muxer"),

.p.extensions = "mpd",

.p.audio_codec = AV_CODEC_ID_AAC,

.p.video_codec = AV_CODEC_ID_H264,

.p.flags = AVFMT_GLOBALHEADER | AVFMT_NOFILE | AVFMT_TS_NEGATIVE,

.p.priv_class = &dash_class,

.priv_data_size = sizeof(DASHContext),

.init = dash_init,

.write_header = dash_write_header,

.write_packet = dash_write_packet,

.write_trailer = dash_write_trailer,

.deinit = dash_free,

.check_bitstream = dash_check_bitstream,

}

Definition at line 2412 of file dashenc.c.

options

static const AVOption options[]

Definition: dashenc.c:2356

dash_check_bitstream

static int dash_check_bitstream(AVFormatContext *s, AVStream *st, const AVPacket *avpkt)

Definition: dashenc.c:2333

deinit

static void deinit(AVFormatContext *s)

Definition: chromaprint.c:52

dash_init

static int dash_init(AVFormatContext *s)

Definition: dashenc.c:1373

AV_CODEC_ID_FLAC

@ AV_CODEC_ID_FLAC

Definition: codec_id.h:471

DASHContext

Definition: dashdec.c:123

AV_CODEC_ID_VP9

@ AV_CODEC_ID_VP9

Definition: codec_id.h:222

AV_CODEC_ID_H264

@ AV_CODEC_ID_H264

Definition: codec_id.h:79

LIBAVUTIL_VERSION_INT

#define LIBAVUTIL_VERSION_INT

Definition: version.h:85

dash_write_packet

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

Definition: dashenc.c:2065

write_trailer

static int write_trailer(AVFormatContext *s1)

Definition: v4l2enc.c:101

av_default_item_name

const char * av_default_item_name(void *ptr)

Return the context name.

Definition: log.c:241

AV_CODEC_ID_AAC

@ AV_CODEC_ID_AAC

Definition: codec_id.h:461

init

int(* init)(AVBSFContext *ctx)

Definition: dts2pts.c:368

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

AV_CODEC_ID_OPUS

@ AV_CODEC_ID_OPUS

Definition: codec_id.h:519

AVFMT_NOFILE

#define AVFMT_NOFILE

Demuxer will use avio_open, no opened file should be provided by the caller.

Definition: avformat.h:468

AVFMT_GLOBALHEADER

#define AVFMT_GLOBALHEADER

Format wants global header.

Definition: avformat.h:477

AV_CODEC_ID_NONE

@ AV_CODEC_ID_NONE

Definition: codec_id.h:50

check_bitstream

static int check_bitstream(AVFormatContext *s, FFStream *sti, AVPacket *pkt)

Definition: mux.c:1056

write_packet

static int write_packet(Muxer *mux, OutputStream *ost, AVPacket *pkt)

Definition: ffmpeg_mux.c:209

AVFMT_TS_NEGATIVE

#define AVFMT_TS_NEGATIVE

Format allows muxing negative timestamps.

Definition: avformat.h:490

dash_write_header

static int dash_write_header(AVFormatContext *s)

Definition: dashenc.c:1728

dash_write_trailer

static int dash_write_trailer(AVFormatContext *s)

Definition: dashenc.c:2291

AV_CODEC_ID_VP8

@ AV_CODEC_ID_VP8

Definition: codec_id.h:192

dash_class

static const AVClass dash_class

Definition: dashenc.c:2405

AV_CODEC_ID_VORBIS

@ AV_CODEC_ID_VORBIS

Definition: codec_id.h:464

write_header

static void write_header(FFV1Context *f)

Definition: ffv1enc.c:384

dash_free

static void dash_free(AVFormatContext *s)

Definition: dashenc.c:598

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