m3u8.c File Reference

#include <gpac/internal/m3u8.h>
#include <gpac/network.h>

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Data Structures
struct	s_accumulated_attributes
struct	HLS_LLChunk

Macros
#define	_GNU_SOURCE
#define	GROUP_ID_TO_PROGRAM_ID(type, group_id)
#define	M3U8_COMPATIBILITY_VERSION(v)
#define	M3U8_BUF_SIZE   2048
#define	RST_ATTR(_name)   if (attribs->_name) { gf_free(attribs->_name); attribs->_name = NULL; }
#define	_CLEANUP

Functions
GF_Err	playlist_element_del (PlaylistElement *e)
static GF_Err	cleanup_list_of_elements (GF_List *list)
static PlaylistElement *	playlist_element_new (PlaylistElementType element_type, const char *url, s_accumulated_attributes *attribs)
static Stream *	stream_new (int stream_id)
static GF_Err	stream_del (Stream *stream)
static GFINLINE int	string2num (const char *s)
static Bool	safe_start_equals (const char *attribute, const char *line)
static void	reset_attributes (s_accumulated_attributes *attributes)
static char **	extract_attributes (const char *name, const char *line, const int num_attributes)
static void	free_attrs (char **attributes)
static char **	parse_attributes (const char *line, s_accumulated_attributes *attributes)
MasterPlaylist *	master_playlist_new ()
GF_Err	gf_m3u8_master_playlist_del (MasterPlaylist **playlist)
static Stream *	master_playlist_find_matching_stream (const MasterPlaylist *pl, const u32 stream_id)
GF_EXPORT GF_Err	gf_m3u8_parse_master_playlist (const char *file, MasterPlaylist **playlist, const char *baseURL)
GF_Err	declare_sub_playlist (char *currentLine, const char *baseURL, s_accumulated_attributes *attribs, PlaylistElement *sub_playlist, MasterPlaylist **playlist, Stream *in_stream)
static void	reset_attribs (s_accumulated_attributes *attribs, Bool is_cleanup)
GF_Err	gf_m3u8_parse_sub_playlist (const char *m3u8_file, MasterPlaylist **playlist, const char *baseURL, Stream *in_stream, PlaylistElement *sub_playlist, Bool is_master)

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Data Structure Documentation

s_accumulated_attributes

struct s_accumulated_attributes

Data Fields
char *	title
char *	mediaURL
double	duration_in_seconds
int	bandwidth
int	width
int	height
int	stream_id
char *	codecs
char *	language
char *	name
u32	channels
MediaType	type
char *	group_audio
char *	group_video
char *	group_subtitle
char *	group_closed_captions
Bool	forced
int	target_duration_in_seconds
int	min_media_sequence
int	current_media_seq
u32	version
u32	compatibility_version
Bool	is_master_playlist
Bool	is_media_segment
Bool	is_playlist_ended
Bool	is_default
Bool	is_autoselect
u64	playlist_utc_timestamp
u64	byte_range_start
u64	byte_range_end
u64	init_byte_range_start
u64	init_byte_range_end
PlaylistElementDRMMethod	key_method
char *	init_url
char *	key_url
bin128	key_iv
Bool	has_iv
Bool	independent_segments
Bool	low_latency
Bool	independent_part
u32	discontinuity

HLS_LLChunk

struct HLS_LLChunk

Data Fields
char *	name
u64	start
u32	size
Double	duration

Macro Definition Documentation

_GNU_SOURCE

#define _GNU_SOURCE

GROUP_ID_TO_PROGRAM_ID

#define GROUP_ID_TO_PROGRAM_ID	(		type,
			group_id
	)

Value:

        (\
        MEDIA_TYPE_##type + \
        string2num(group_id) \
        ) \

M3U8_COMPATIBILITY_VERSION

#define M3U8_COMPATIBILITY_VERSION

(

v

)

Value:

        if (v > attributes->compatibility_version) \
                attributes->compatibility_version = v;

M3U8_BUF_SIZE

#define M3U8_BUF_SIZE   2048

RST_ATTR

#define RST_ATTR

(

_name

)

if (attribs->_name) { gf_free(attribs->_name); attribs->_name = NULL; }

_CLEANUP

#define _CLEANUP

Value:

        reset_attribs(&attribs, GF_TRUE);\
        if (f) gf_fclose(f); \
        else if (release_blob) gf_blob_release(m3u8_file);

Function Documentation

playlist_element_del()

GF_Err playlist_element_del

(

PlaylistElement *

e

)

Deletes an Playlist element

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cleanup_list_of_elements()

static GF_Err cleanup_list_of_elements ( GF_List *  list )

static

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playlist_element_new()

static PlaylistElement* playlist_element_new ( PlaylistElementType  element_type, const char *  url, s_accumulated_attributes *  attribs  )

static

Creates an Playlist element. This element can be either a playlist of a stream according to first parameter.

Returns

The PlaylistElement or NULL if it could not be created. Elements will be deleted recursively.

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stream_new()

static Stream* stream_new ( int  stream_id )

static

Creates a new stream properly initialized

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stream_del()

static GF_Err stream_del ( Stream *  stream )

static

Deletes the specified stream

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string2num()

static GFINLINE int string2num ( const char *  s )

static

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safe_start_equals()

static Bool safe_start_equals ( const char *  attribute, const char *  line  )

static

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reset_attributes()

static void reset_attributes ( s_accumulated_attributes *  attributes )

static

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extract_attributes()

static char** extract_attributes ( const char *  name, const char *  line, const int  num_attributes  )

static

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free_attrs()

static void free_attrs ( char **  attributes )

static

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parse_attributes()

static char** parse_attributes ( const char *  line, s_accumulated_attributes *  attributes  )

static

Parses the attributes and accumulate into the attributes structure

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master_playlist_new()

MasterPlaylist* master_playlist_new

(

)

Creates a new MasterPlaylist

Returns

NULL if MasterPlaylist element could not be allocated

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gf_m3u8_master_playlist_del()

GF_Err gf_m3u8_master_playlist_del

(

MasterPlaylist **

playlist

)

Deletes the given MasterPlaylist and all of its sub elements

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master_playlist_find_matching_stream()

static Stream* master_playlist_find_matching_stream ( const MasterPlaylist *  pl, const u32  stream_id  )

static

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gf_m3u8_parse_master_playlist()

GF_EXPORT GF_Err gf_m3u8_parse_master_playlist	(	const char *	file,
		MasterPlaylist **	playlist,
		const char *	baseURL
	)

Parse the given m3u8 playlist file

Parameters

file	The file from cache to parse
playlist	The playlist to fill. If argument is null, and file is valid, playlist will be allocated
baseURL	The base URL of the playlist

Returns

GF_OK if playlist valid

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declare_sub_playlist()

GF_Err declare_sub_playlist	(	char *	currentLine,
		const char *	baseURL,
		s_accumulated_attributes *	attribs,
		PlaylistElement *	sub_playlist,
		MasterPlaylist **	playlist,
		Stream *	in_stream
	)

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reset_attribs()

static void reset_attribs ( s_accumulated_attributes *  attribs, Bool  is_cleanup  )

static

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gf_m3u8_parse_sub_playlist()

GF_Err gf_m3u8_parse_sub_playlist	(	const char *	file,
		MasterPlaylist **	playlist,
		const char *	baseURL,
		Stream *	in_program,
		PlaylistElement *	sub_playlist,
		Bool	is_master
	)

Parse the given playlist file as a subplaylist of an existing playlist

Parameters

file	The file from cache to parse
playlist	The playlist to fill.
baseURL	base URL of the playlist
in_program	in which the playlist is parsed
sub_playlist	existing subplaylist element in the playlist in which the playlist is parsed
is_master	set to true to indicate if this is the root playlist

Returns

GF_OK if playlist valid

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