hlsenc.c File Reference

#include "config.h"
#include <float.h>
#include <stdint.h>
#include "libavutil/avassert.h"
#include "libavutil/mathematics.h"
#include "libavutil/parseutils.h"
#include "libavutil/avstring.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/random_seed.h"
#include "libavutil/opt.h"
#include "libavutil/log.h"
#include "libavutil/time_internal.h"
#include "avformat.h"
#include "avio_internal.h"
#include "internal.h"
#include "os_support.h"

Go to the source code of this file.

Data Structures
struct	HLSSegment
struct	HLSContext

Macros
#define	KEYSIZE   16
#define	LINE_BUFFER_SIZE   1024
#define	HLS_MICROSECOND_UNIT   1000000
#define	OFFSET(x)   offsetof(HLSContext, x)
#define	E   AV_OPT_FLAG_ENCODING_PARAM

Enumerations
enum	StartSequenceSourceType { HLS_START_SEQUENCE_AS_START_NUMBER = 0, HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH = 1, HLS_START_SEQUENCE_AS_FORMATTED_DATETIME = 2 }
enum	HLSFlags {   HLS_SINGLE_FILE = (1 << 0), HLS_DELETE_SEGMENTS = (1 << 1), HLS_ROUND_DURATIONS = (1 << 2), HLS_DISCONT_START = (1 << 3),   HLS_OMIT_ENDLIST = (1 << 4), HLS_SPLIT_BY_TIME = (1 << 5), HLS_APPEND_LIST = (1 << 6), HLS_PROGRAM_DATE_TIME = (1 << 7),   HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), HLS_TEMP_FILE = (1 << 11),   HLS_PERIODIC_REKEY = (1 << 12) }
enum	SegmentType {   PALETTE_SEGMENT = 0x14, OBJECT_SEGMENT = 0x15, PRESENTATION_SEGMENT = 0x16, WINDOW_SEGMENT = 0x17,   DISPLAY_SEGMENT = 0x80, SEGMENT_TYPE_MPEGTS, SEGMENT_TYPE_FMP4 }
enum	PlaylistType {   PLS_TYPE_UNSPECIFIED, PLS_TYPE_EVENT, PLS_TYPE_VOD, PLAYLIST_TYPE_NONE,   PLAYLIST_TYPE_EVENT, PLAYLIST_TYPE_VOD, PLAYLIST_TYPE_NB }

Functions
static int	get_int_from_double (double val)
static int	mkdir_p (const char *path)
static void	set_http_options (AVFormatContext *s, AVDictionary **options, HLSContext *c)
static int	replace_int_data_in_filename (char *buf, int buf_size, const char *filename, char placeholder, int64_t number)
static void	write_styp (AVIOContext *pb)
static int	hls_delete_old_segments (AVFormatContext *s, HLSContext *hls)
static int	randomize (uint8_t *buf, int len)
static int	do_encrypt (AVFormatContext *s)
static int	hls_encryption_start (AVFormatContext *s)
static int	read_chomp_line (AVIOContext *s, char *buf, int maxlen)
static int	hls_mux_init (AVFormatContext *s)
static HLSSegment *	find_segment_by_filename (HLSSegment *segment, const char *filename)
static int	sls_flags_filename_process (struct AVFormatContext *s, HLSContext *hls, HLSSegment *en, double duration, int64_t pos, int64_t size)
static int	sls_flag_check_duration_size_index (HLSContext *hls)
static int	sls_flag_check_duration_size (HLSContext *hls)
static void	sls_flag_file_rename (HLSContext *hls, char *old_filename)
static int	sls_flag_use_localtime_filename (AVFormatContext *oc, HLSContext *c)
static int	hls_append_segment (struct AVFormatContext *s, HLSContext *hls, double duration, int64_t pos, int64_t size)
static int	parse_playlist (AVFormatContext *s, const char *url)
static void	hls_free_segments (HLSSegment *p)
static void	write_m3u8_head_block (HLSContext *hls, AVIOContext *out, int version, int target_duration, int64_t sequence)
static void	hls_rename_temp_file (AVFormatContext *s, AVFormatContext *oc)
static int	hls_window (AVFormatContext *s, int last)
static int	hls_start (AVFormatContext *s)
static const char *	get_default_pattern_localtime_fmt (AVFormatContext *s)
static int	hls_write_header (AVFormatContext *s)
static int	hls_write_packet (AVFormatContext *s, AVPacket *pkt)
static int	hls_write_trailer (struct AVFormatContext *s)

Variables
static const AVOption	options []
static const AVClass	hls_class
AVOutputFormat	ff_hls_muxer

Macro Definition Documentation

#define KEYSIZE   16

Definition at line 56 of file hlsenc.c.

Referenced by do_encrypt(), hls_encryption_start(), and hls_start().

#define LINE_BUFFER_SIZE   1024

Definition at line 57 of file hlsenc.c.

#define HLS_MICROSECOND_UNIT   1000000

Definition at line 58 of file hlsenc.c.

Referenced by sls_flags_filename_process().

#define OFFSET

(

x

)

offsetof(HLSContext, x)

Definition at line 1804 of file hlsenc.c.

#define E   AV_OPT_FLAG_ENCODING_PARAM

Definition at line 1805 of file hlsenc.c.

Enumeration Type Documentation

enum StartSequenceSourceType

Enumerator
HLS_START_SEQUENCE_AS_START_NUMBER
HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH
HLS_START_SEQUENCE_AS_FORMATTED_DATETIME

Definition at line 50 of file hlsenc.c.

enum HLSFlags

Enumerator
HLS_SINGLE_FILE
HLS_DELETE_SEGMENTS
HLS_ROUND_DURATIONS
HLS_DISCONT_START
HLS_OMIT_ENDLIST
HLS_SPLIT_BY_TIME
HLS_APPEND_LIST
HLS_PROGRAM_DATE_TIME
HLS_SECOND_LEVEL_SEGMENT_INDEX
HLS_SECOND_LEVEL_SEGMENT_DURATION
HLS_SECOND_LEVEL_SEGMENT_SIZE
HLS_TEMP_FILE
HLS_PERIODIC_REKEY

Definition at line 74 of file hlsenc.c.

enum SegmentType

Enumerator
PALETTE_SEGMENT
OBJECT_SEGMENT
PRESENTATION_SEGMENT
WINDOW_SEGMENT
DISPLAY_SEGMENT
SEGMENT_TYPE_MPEGTS
SEGMENT_TYPE_FMP4

Definition at line 91 of file hlsenc.c.

enum PlaylistType

Enumerator
PLS_TYPE_UNSPECIFIED
PLS_TYPE_EVENT
PLS_TYPE_VOD
PLAYLIST_TYPE_NONE
PLAYLIST_TYPE_EVENT
PLAYLIST_TYPE_VOD
PLAYLIST_TYPE_NB

Definition at line 96 of file hlsenc.c.

Function Documentation

static int get_int_from_double ( double  val )

static

Definition at line 183 of file hlsenc.c.

Referenced by hls_window().

static int mkdir_p ( const char *  path )

static

Definition at line 188 of file hlsenc.c.

Referenced by hls_start().

static void set_http_options ( AVFormatContext *  s, AVDictionary **  options, HLSContext *  c  )

static

Definition at line 221 of file hlsenc.c.

Referenced by hls_mux_init(), hls_start(), and hls_window().

static int replace_int_data_in_filename ( char *  buf, int  buf_size, const char *  filename, char  placeholder, int64_t  number  )

static

Definition at line 237 of file hlsenc.c.

Referenced by hls_start(), sls_flag_use_localtime_filename(), and sls_flags_filename_process().

static void write_styp ( AVIOContext *  pb )

static

Definition at line 289 of file hlsenc.c.

Referenced by hls_start().

static int hls_delete_old_segments ( AVFormatContext *  s, HLSContext *  hls  )

static

Definition at line 299 of file hlsenc.c.

Referenced by hls_append_segment().

static int randomize ( uint8_t *  buf, int  len  )

static

Definition at line 406 of file hlsenc.c.

Referenced by do_encrypt().

static int do_encrypt ( AVFormatContext *  s )

static

Definition at line 420 of file hlsenc.c.

Referenced by hls_start().

static int hls_encryption_start ( AVFormatContext *  s )

static

Definition at line 489 of file hlsenc.c.

Referenced by hls_start().

static int read_chomp_line ( AVIOContext *  s, char *  buf, int  maxlen  )

static

Definition at line 541 of file hlsenc.c.

Referenced by parse_playlist().

static int hls_mux_init ( AVFormatContext *  s )

static

Definition at line 549 of file hlsenc.c.

Referenced by hls_write_header().

static HLSSegment* find_segment_by_filename ( HLSSegment *  segment, const char *  filename  )

static

Definition at line 652 of file hlsenc.c.

Referenced by hls_append_segment().

static int sls_flags_filename_process ( struct AVFormatContext *  s, HLSContext *  hls, HLSSegment *  en, double  duration, int64_t  pos, int64_t  size  )

static

Definition at line 662 of file hlsenc.c.

Referenced by hls_append_segment().

static int sls_flag_check_duration_size_index ( HLSContext *  hls )

static

Definition at line 708 of file hlsenc.c.

Referenced by hls_write_header().

static int sls_flag_check_duration_size ( HLSContext *  hls )

static

Definition at line 731 of file hlsenc.c.

Referenced by hls_write_header().

static void sls_flag_file_rename ( HLSContext *  hls, char *  old_filename  )

static

Definition at line 751 of file hlsenc.c.

Referenced by hls_write_packet(), and hls_write_trailer().

static int sls_flag_use_localtime_filename ( AVFormatContext *  oc, HLSContext *  c  )

static

Definition at line 758 of file hlsenc.c.

Referenced by hls_start().

static int hls_append_segment ( struct AVFormatContext *  s, HLSContext *  hls, double  duration, int64_t  pos, int64_t  size  )

static

Definition at line 812 of file hlsenc.c.

Referenced by hls_write_packet(), hls_write_trailer(), and parse_playlist().

static int parse_playlist ( AVFormatContext *  s, const char *  url  )

static

Definition at line 898 of file hlsenc.c.

Referenced by hls_write_header().

static void hls_free_segments ( HLSSegment *  p )

static

Definition at line 983 of file hlsenc.c.

Referenced by hls_write_trailer().

static void write_m3u8_head_block ( HLSContext *  hls, AVIOContext *  out, int  version, int  target_duration, int64_t  sequence  )

static

Definition at line 994 of file hlsenc.c.

Referenced by hls_window().

static void hls_rename_temp_file ( AVFormatContext *  s, AVFormatContext *  oc  )

static

Definition at line 1007 of file hlsenc.c.

Referenced by hls_write_packet(), and hls_write_trailer().

static int hls_window ( AVFormatContext *  s, int  last  )

static

Definition at line 1018 of file hlsenc.c.

Referenced by hls_write_packet(), and hls_write_trailer().

static int hls_start ( AVFormatContext *  s )

static

Definition at line 1163 of file hlsenc.c.

Referenced by hls_write_header(), and hls_write_packet().

static const char* get_default_pattern_localtime_fmt ( AVFormatContext *  s )

static

Definition at line 1319 of file hlsenc.c.

Referenced by hls_write_header().

static int hls_write_header ( AVFormatContext *  s )

static

Definition at line 1335 of file hlsenc.c.

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

static

Definition at line 1604 of file hlsenc.c.

static int hls_write_trailer ( struct AVFormatContext *  s )

static

Definition at line 1750 of file hlsenc.c.

Variable Documentation

const AVOption options[]

static

Definition at line 1806 of file hlsenc.c.

Referenced by hls_delete_old_segments(), hls_mux_init(), hls_start(), and hls_window().

const AVClass hls_class

static

Initial value:

= {
    .class_name = "hls muxer",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 1858 of file hlsenc.c.

AVOutputFormat ff_hls_muxer

Initial value:

= {
    .name           = "hls",
    .long_name      = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
    .extensions     = "m3u8",
    .priv_data_size = sizeof(HLSContext),
    .audio_codec    = AV_CODEC_ID_AAC,
    .video_codec    = AV_CODEC_ID_H264,
    .subtitle_codec = AV_CODEC_ID_WEBVTT,
    .flags          = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
    .write_header   = hls_write_header,
    .write_packet   = hls_write_packet,
    .write_trailer  = hls_write_trailer,
    .priv_class     = &hls_class,
}

Definition at line 1866 of file hlsenc.c.