Apple HTTP Live Streaming demuxer http://tools.ietf.org/html/draft-pantos-http-live-streaming. More...

#include "libavutil/avstring.h"
#include "libavutil/avassert.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "libavutil/dict.h"
#include "libavutil/time.h"
#include "avformat.h"
#include "internal.h"
#include "avio_internal.h"
#include "url.h"
#include "id3v2.h"

Data Structures
struct	segment

struct	playlist

struct	rendition

struct	variant

struct	HLSContext

struct	variant_info

struct	key_info

struct	rendition_info

Macros
#define	INITIAL_BUFFER_SIZE 32768

#define	MAX_FIELD_LEN 64

#define	MAX_CHARACTERISTICS_LEN 512

#define	MPEG_TIME_BASE 90000

#define	MPEG_TIME_BASE_Q (AVRational){1, MPEG_TIME_BASE}

Enumerations
enum	KeyType { KEY_NONE, KEY_AES_128, KEY_SAMPLE_AES }

enum	PlaylistType { PLS_TYPE_UNSPECIFIED, PLS_TYPE_EVENT, PLS_TYPE_VOD }

enum	ReadFromURLMode { READ_NORMAL, READ_COMPLETE }

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

static void	free_segment_list (struct playlist *pls)

static void	free_playlist_list (HLSContext *c)

static void	free_variant_list (HLSContext *c)

static void	free_rendition_list (HLSContext *c)

static void	reset_packet (AVPacket *pkt)

static struct playlist *	new_playlist (HLSContext c, const char url, const char *base)

static struct variant *	new_variant (HLSContext c, struct variant_info info, const char url, const char base)

static void	handle_variant_args (struct variant_info info, const char key, int key_len, char *dest, int dest_len)

static void	handle_key_args (struct key_info info, const char key, int key_len, char *dest, int dest_len)

static struct rendition *	new_rendition (HLSContext c, struct rendition_info info, const char *url_base)

static void	handle_rendition_args (struct rendition_info info, const char key, int key_len, char *dest, int dest_len)

static int	ensure_playlist (HLSContext c, struct playlist pls, const char url)

static int	parse_playlist (HLSContext c, const char url, struct playlist pls, AVIOContext in)

static int	read_from_url (struct playlist pls, uint8_t buf, int buf_size, enum ReadFromURLMode mode)

static void	parse_id3 (AVFormatContext s, AVIOContext pb, AVDictionary *metadata, int64_t dts, ID3v2ExtraMetaAPIC apic, ID3v2ExtraMeta extra_meta)

static int	id3_has_changed_values (struct playlist pls, AVDictionary metadata, ID3v2ExtraMetaAPIC *apic)

static void	handle_id3 (AVIOContext pb, struct playlist pls)

static void	intercept_id3 (struct playlist pls, uint8_t buf, int buf_size, int *len)

static int	open_input (HLSContext c, struct playlist pls)

static int64_t	default_reload_interval (struct playlist *pls)

static int	read_data (void opaque, uint8_t buf, int buf_size)

static int	playlist_in_multiple_variants (HLSContext c, struct playlist pls)

static void	add_renditions_to_variant (HLSContext c, struct variant var, enum AVMediaType type, const char *group_id)

static void	add_metadata_from_renditions (AVFormatContext s, struct playlist pls, enum AVMediaType type)

static int	find_timestamp_in_playlist (HLSContext c, struct playlist pls, int64_t timestamp, int *seq_no)

static int	select_cur_seq_no (HLSContext c, struct playlist pls)

static int	hls_read_header (AVFormatContext *s)

static int	recheck_discard_flags (AVFormatContext *s, int first)

static void	fill_timing_for_id3_timestamped_stream (struct playlist *pls)

static AVRational	get_timebase (struct playlist *pls)

static int	compare_ts_with_wrapdetect (int64_t ts_a, struct playlist pls_a, int64_t ts_b, struct playlist pls_b)

static int	hls_read_packet (AVFormatContext s, AVPacket pkt)

static int	hls_close (AVFormatContext *s)

static int	hls_read_seek (AVFormatContext *s, int stream_index, int64_t timestamp, int flags)

static int	hls_probe (AVProbeData *p)

Variables
AVInputFormat	ff_hls_demuxer

Detailed Description

Apple HTTP Live Streaming demuxer http://tools.ietf.org/html/draft-pantos-http-live-streaming.

Definition in file hls.c.

Macro Definition Documentation

#define INITIAL_BUFFER_SIZE 32768

Definition at line 42 of file hls.c.

Referenced by hls_read_header().

#define MAX_FIELD_LEN 64

Definition at line 44 of file hls.c.

#define MAX_CHARACTERISTICS_LEN 512

Definition at line 45 of file hls.c.

#define MPEG_TIME_BASE 90000

Definition at line 47 of file hls.c.

Referenced by hls_read_header().

#define MPEG_TIME_BASE_Q (AVRational){1, MPEG_TIME_BASE}

Definition at line 48 of file hls.c.

Referenced by compare_ts_with_wrapdetect(), fill_timing_for_id3_timestamped_stream(), and get_timebase().

Enumeration Type Documentation

enum KeyType

Enumerator:

KEY_NONE
KEY_AES_128
KEY_SAMPLE_AES

Definition at line 62 of file hls.c.

enum PlaylistType

Enumerator:

PLS_TYPE_UNSPECIFIED
PLS_TYPE_EVENT
PLS_TYPE_VOD

Definition at line 80 of file hls.c.

enum ReadFromURLMode

Enumerator:

READ_NORMAL
READ_COMPLETE

Definition at line 681 of file hls.c.

Function Documentation

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

static

Definition at line 185 of file hls.c.

Referenced by parse_playlist().

static void free_segment_list ( struct playlist * pls )

static

Definition at line 193 of file hls.c.

Referenced by free_playlist_list(), and parse_playlist().

static void free_playlist_list ( HLSContext * c )

static

Definition at line 205 of file hls.c.

Referenced by hls_close(), and hls_read_header().

static void free_variant_list ( HLSContext * c )

static

Definition at line 231 of file hls.c.

Referenced by hls_close(), and hls_read_header().

static void free_rendition_list ( HLSContext * c )

static

Definition at line 243 of file hls.c.

Referenced by hls_close(), and hls_read_header().

static void reset_packet ( AVPacket * pkt )

static

Definition at line 256 of file hls.c.

Referenced by hls_read_packet(), hls_read_seek(), and new_playlist().

static struct playlist* new_playlist	(	HLSContext *	c,
		const char *	url,
		const char *	base
	)

staticread

Definition at line 262 of file hls.c.

Referenced by new_rendition(), and new_variant().

static struct variant* new_variant	(	HLSContext *	c,
		struct variant_info *	info,
		const char *	url,
		const char *	base
	)

staticread

Definition at line 287 of file hls.c.

Referenced by ensure_playlist(), and parse_playlist().

static void handle_variant_args	(	struct variant_info *	info,
		const char *	key,
		int	key_len,
		char **	dest,
		int *	dest_len
	)

static

Definition at line 313 of file hls.c.

Referenced by parse_playlist().

static void handle_key_args	(	struct key_info *	info,
		const char *	key,
		int	key_len,
		char **	dest,
		int *	dest_len
	)

static

Definition at line 337 of file hls.c.

Referenced by parse_playlist().

static struct rendition* new_rendition	(	HLSContext *	c,
		struct rendition_info *	info,
		const char *	url_base
	)

staticread

Definition at line 364 of file hls.c.

Referenced by parse_playlist().

static void handle_rendition_args	(	struct rendition_info *	info,
		const char *	key,
		int	key_len,
		char **	dest,
		int *	dest_len
	)

static

Definition at line 441 of file hls.c.

Referenced by parse_playlist().

static int ensure_playlist	(	HLSContext *	c,
		struct playlist **	pls,
		const char *	url
	)

static

Definition at line 483 of file hls.c.

Referenced by parse_playlist().

static int parse_playlist	(	HLSContext *	c,
		const char *	url,
		struct playlist *	pls,
		AVIOContext *	in
	)

static

Definition at line 495 of file hls.c.

Referenced by hls_read_header(), read_data(), and select_cur_seq_no().

static int read_from_url	(	struct playlist *	pls,
		uint8_t *	buf,
		int	buf_size,
		enum ReadFromURLMode	mode
	)

static

Definition at line 687 of file hls.c.

Referenced by intercept_id3(), and read_data().

static void parse_id3	(	AVFormatContext *	s,
		AVIOContext *	pb,
		AVDictionary **	metadata,
		int64_t *	dts,
		ID3v2ExtraMetaAPIC **	apic,
		ID3v2ExtraMeta **	extra_meta
	)

static

Definition at line 709 of file hls.c.

Referenced by handle_id3().

static int id3_has_changed_values	(	struct playlist *	pls,
		AVDictionary *	metadata,
		ID3v2ExtraMetaAPIC *	apic
	)

static

Definition at line 735 of file hls.c.

Referenced by handle_id3().

static void handle_id3	(	AVIOContext *	pb,
		struct playlist *	pls
	)

static

Definition at line 764 of file hls.c.

Referenced by intercept_id3().

static void intercept_id3	(	struct playlist *	pls,
		uint8_t *	buf,
		int	buf_size,
		int *	len
	)

static

Definition at line 806 of file hls.c.

Referenced by read_data().

static int open_input	(	HLSContext *	c,
		struct playlist *	pls
	)

static

Definition at line 906 of file hls.c.

Referenced by read_data().

static int64_t default_reload_interval ( struct playlist * pls )

static

Definition at line 1001 of file hls.c.

Referenced by read_data(), and select_cur_seq_no().

static int read_data	(	void *	opaque,
		uint8_t *	buf,
		int	buf_size
	)

static

Definition at line 1008 of file hls.c.

Referenced by hls_read_header(), and pulse_read_packet().

static int playlist_in_multiple_variants	(	HLSContext *	c,
		struct playlist *	pls
	)

static

Definition at line 1102 of file hls.c.

Referenced by hls_read_header().

static void add_renditions_to_variant	(	HLSContext *	c,
		struct variant *	var,
		enum AVMediaType	type,
		const char *	group_id
	)

static

Definition at line 1121 of file hls.c.

Referenced by hls_read_header().

static void add_metadata_from_renditions	(	AVFormatContext *	s,
		struct playlist *	pls,
		enum AVMediaType	type
	)

static

Definition at line 1145 of file hls.c.

Referenced by hls_read_header().

static int find_timestamp_in_playlist	(	HLSContext *	c,
		struct playlist *	pls,
		int64_t	timestamp,
		int *	seq_no
	)

static

Definition at line 1177 of file hls.c.

Referenced by hls_read_seek(), and select_cur_seq_no().

static int select_cur_seq_no	(	HLSContext *	c,
		struct playlist *	pls
	)

static

Definition at line 1203 of file hls.c.

Referenced by hls_read_header(), and recheck_discard_flags().

static int hls_read_header ( AVFormatContext * s )

static

Definition at line 1240 of file hls.c.

static int recheck_discard_flags	(	AVFormatContext *	s,
		int	first
	)

static

Definition at line 1437 of file hls.c.

Referenced by hls_read_packet().

static void fill_timing_for_id3_timestamped_stream ( struct playlist * pls )

static

Definition at line 1478 of file hls.c.

Referenced by hls_read_packet().

static AVRational get_timebase ( struct playlist * pls )

static

Definition at line 1503 of file hls.c.

Referenced by compare_ts_with_wrapdetect(), and hls_read_packet().

static int compare_ts_with_wrapdetect	(	int64_t	ts_a,
		struct playlist *	pls_a,
		int64_t	ts_b,
		struct playlist *	pls_b
	)

static

Definition at line 1511 of file hls.c.

Referenced by hls_read_packet().

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

static

Definition at line 1520 of file hls.c.

static int hls_close ( AVFormatContext * s )

static

Definition at line 1613 of file hls.c.

static int hls_read_seek	(	AVFormatContext *	s,
		int	stream_index,
		int64_t	timestamp,
		int	flags
	)

static

Definition at line 1623 of file hls.c.

static int hls_probe ( AVProbeData * p )

static

Definition at line 1703 of file hls.c.

Variable Documentation

AVInputFormat ff_hls_demuxer

Initial value:

= {
    .name           = "hls,applehttp",
    .long_name      = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
    .priv_data_size = sizeof(HLSContext),
    .read_probe     = hls_probe,
    .read_header    = hls_read_header,
    .read_packet    = hls_read_packet,
    .read_close     = hls_close,
    .read_seek      = hls_read_seek,
}

Definition at line 1716 of file hls.c.

Data Structures

Macros

Enumerations

Functions

Variables

Detailed Description

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation