Utility tools DASH manifests. More...

Collaboration diagram for MPD/M3U8/Smooth Manifest Parsing:

Data Structures
struct	GF_MPD_Metrics

struct	GF_MPD_ContentComponent

struct	GF_MPD_Descriptor

struct	GF_MPD_Subset

struct	GF_MPD_SegmentTimelineEntry

struct	GF_MPD_SegmentTimeline

struct	GF_MPD_ByteRange

struct	GF_MPD_BaseURL

struct	GF_MPD_URL

struct	GF_MPD_Fractional

struct	GF_MPD_ISOBMFInfo

struct	GF_MPD_SegmentBase

struct	GF_MPD_MultipleSegmentBase

struct	GF_MPD_SegmentURL

struct	GF_MPD_SegmentList

struct	GF_MPD_SegmentTemplate

struct	GF_MPD_CommonAttributes

struct	GF_MPD_ProducerReferenceTime

struct	GF_MPD_SubRepresentation

struct	GF_DASH_RepresentationPlayback

struct	GF_DASH_SegmenterContext

struct	GF_DASH_FragmentContext

struct	GF_DASH_SegmentContext

struct	GF_MPD_Representation

struct	GF_MPD_AdaptationSet

struct	GF_MPD_Inband_Event

struct	GF_MPD_Period

struct	GF_MPD_ProgramInfo

struct	GF_MPD

struct	GF_FileDownload

struct	GF_DASHCueInfo

Macros
#define	MPD_EXTENSIBLE

#define	GF_MPD_SEGMENT_BASE

#define	GF_MPD_MULTIPLE_SEGMENT_BASE

#define	GF_MPD_COMMON_ATTRIBUTES_ELEMENTS

Typedefs
typedef u32	GF_DashAbsoluteURLMode

typedef u32	GF_DashHLSLowLatencyType

Enumerations
enum	GF_DashTemplateSegmentType { GF_DASH_TEMPLATE_SEGMENT = 0 , GF_DASH_TEMPLATE_INITIALIZATION , GF_DASH_TEMPLATE_TEMPLATE , GF_DASH_TEMPLATE_TEMPLATE_WITH_PATH , GF_DASH_TEMPLATE_INITIALIZATION_TEMPLATE , GF_DASH_TEMPLATE_REPINDEX , GF_DASH_TEMPLATE_REPINDEX_TEMPLATE , GF_DASH_TEMPLATE_REPINDEX_TEMPLATE_WITH_PATH , GF_DASH_TEMPLATE_INITIALIZATION_SKIPINIT , GF_DASH_TEMPLATE_INITIALIZATION_TEMPLATE_SKIPINIT , GF_DASH_TEMPLATE_SEGMENT_SUBNUMBER }

enum	GF_DashAbsoluteURLMode_t { GF_DASH_ABS_URL_NO , GF_DASH_ABS_URL_VARIANT , GF_DASH_ABS_URL_MASTER , GF_DASH_ABS_URL_BOTH }

enum	GF_DashHLSLowLatencyType_t { GF_DASH_LL_HLS_OFF , GF_DASH_LL_HLS_BR , GF_DASH_LL_HLS_SF , GF_DASH_LL_HLS_BRSF }

enum	GF_MPD_ScanType { GF_MPD_SCANTYPE_UNKNOWN , GF_MPD_SCANTYPE_PROGRESSIVE , GF_MPD_SCANTYPE_INTERLACED }

enum	GF_MPD_ProducerRefType { GF_MPD_PRODUCER_REF_ENCODER = 0 , GF_MPD_PRODUCER_REF_CAPTURED , GF_MPD_PRODUCER_REF_APPLICATION }

enum	GF_MPD_Type { GF_MPD_TYPE_STATIC , GF_MPD_TYPE_DYNAMIC , GF_MPD_TYPE_DYNAMIC_LAST }

enum	GF_M3U8WriteMode { GF_M3U8_WRITE_ALL =0 , GF_M3U8_WRITE_MASTER , GF_M3U8_WRITE_CHILD }

enum	GF_MPD_URLResolveType { GF_MPD_RESOLVE_URL_MEDIA , GF_MPD_RESOLVE_URL_INIT , GF_MPD_RESOLVE_URL_INDEX , GF_MPD_RESOLVE_URL_MEDIA_TEMPLATE , GF_MPD_RESOLVE_URL_MEDIA_NOSTART , GF_MPD_RESOLVE_URL_MEDIA_TEMPLATE_NO_BASE }

enum	MPDSeekMode { MPD_SEEK_PREV , MPD_SEEK_NEAREST }

Functions
GF_Err	gf_media_mpd_format_segment_name (GF_DashTemplateSegmentType seg_type, Bool is_bs_switching, char segment_name, const char rep_id, const char base_url, const char seg_rad_name, const char *seg_ext, u64 start_time, u32 bandwidth, u32 segment_number, Bool use_segment_timeline, Bool forced)

GF_Err	gf_mpd_init_from_dom (GF_XMLNode root, GF_MPD mpd, const char *base_url)

GF_Err	gf_mpd_complete_from_dom (GF_XMLNode root, GF_MPD mpd, const char *base_url)

GF_MPD *	gf_mpd_new ()

void	gf_mpd_del (GF_MPD *mpd)

void	gf_mpd_segment_url_free (void *ptr)

void	gf_mpd_segment_base_free (void *ptr)

void	gf_mpd_parse_segment_url (GF_List container, GF_XMLNode root)

u64	gf_mpd_parse_date (const char *const attr)

void	gf_mpd_url_free (void *_item)

GF_MPD_Period *	gf_mpd_period_new ()

void	gf_mpd_period_free (void *_item)

GF_Err	gf_mpd_write (GF_MPD const const mpd, FILE out, Bool compact)

GF_Err	gf_mpd_write_file (GF_MPD const const mpd, const char file_name)

GF_Err	gf_mpd_write_m3u8_master_playlist (GF_MPD const const mpd, FILE out, const char m3u8_name, GF_MPD_Period period, GF_M3U8WriteMode mode)

GF_Err	gf_mpd_parse_period (GF_MPD mpd, GF_XMLNode root)

GF_MPD_Descriptor *	gf_mpd_descriptor_new (const char id, const char uri, const char *value)

GF_MPD_AdaptationSet *	gf_mpd_adaptation_set_new ()

GF_Err	gf_m3u8_to_mpd (const char m3u8_file, const char base_url, const char mpd_file, u32 reload_count, char mimeTypeForM3U8Segments, Bool do_import, Bool use_mpd_templates, Bool use_segment_timeline, GF_FileDownload getter, GF_MPD mpd, Bool parse_sub_playlist, Bool keep_files)

GF_Err	gf_m3u8_solve_representation_xlink (GF_MPD_Representation rep, const char base_url, GF_FileDownload getter, Bool is_static, u64 *duration, u8 signature[GF_SHA1_DIGEST_SIZE])

GF_MPD_SegmentList *	gf_mpd_solve_segment_list_xlink (GF_MPD mpd, GF_XMLNode root)

GF_Err	gf_mpd_init_smooth_from_dom (GF_XMLNode root, GF_MPD mpd, const char *default_base_url)

void	gf_mpd_delete_segment_list (GF_MPD_SegmentList *segment_list)

void	gf_mpd_del_list (GF_List list, void(__destructor)(void *), Bool reset_only)

void	gf_mpd_descriptor_free (void *item)

GF_Err	gf_mpd_split_adaptation_sets (GF_MPD *mpd)

GF_Err	gf_mpd_smooth_to_mpd (char smooth_file, GF_MPD mpd, const char *default_base_url)

u32	gf_mpd_get_base_url_count (GF_MPD mpd, GF_MPD_Period period, GF_MPD_AdaptationSet set, GF_MPD_Representation rep)

GF_Err	gf_mpd_resolve_url (GF_MPD mpd, GF_MPD_Representation rep, GF_MPD_AdaptationSet set, GF_MPD_Period period, const char mpd_url, u32 base_url_index, GF_MPD_URLResolveType resolve_type, u32 item_index, u32 nb_segments_removed, char out_url, u64 out_range_start, u64 out_range_end, u64 segment_duration, Bool is_in_base_url, char out_key_url, bin128 key_iv, u32 *out_start_number, s32 subseg_index)

Double	gf_mpd_get_duration (GF_MPD *mpd)

void	gf_mpd_resolve_segment_duration (GF_MPD_Representation rep, GF_MPD_AdaptationSet set, GF_MPD_Period period, u64 out_duration, u32 out_timescale, u64 out_pts_offset, GF_MPD_SegmentTimeline **out_segment_timeline)

GF_Err	gf_mpd_get_segment_start_time_with_timescale (s32 in_segment_index, GF_MPD_Period const const in_period, GF_MPD_AdaptationSet const const in_set, GF_MPD_Representation const const in_rep, u64 out_segment_start_time, u64 out_opt_segment_duration, u32 out_opt_scale)

GF_Err	gf_mpd_seek_in_period (Double seek_time, MPDSeekMode seek_mode, GF_MPD_Period const const in_period, GF_MPD_AdaptationSet const const in_set, GF_MPD_Representation const const in_rep, u32 out_segment_index, Double out_opt_seek_time, Double out_seg_dur)

void	gf_mpd_base_url_free (void *_item)

GF_MPD_Representation *	gf_mpd_representation_new ()

void	gf_mpd_representation_free (void *_item)

GF_MPD_SegmentTimeline *	gf_mpd_segmentimeline_new ()

GF_Err	gf_mpd_load_cues (const char cues_file, u32 stream_id, u32 cues_timescale, Bool use_edit_list, s32 ts_offset, GF_DASHCueInfo *out_cues, u32 nb_cues)

GF_MPD_Descriptor *	gf_mpd_get_descriptor (GF_List desclist, char scheme_id)

char *	gf_mpd_resolve_subnumber (char llhas_template, char segment_filename, u32 part_idx)

Detailed Description

Utility tools DASH manifests.

This section documents the DASH, Smooth and HLS manifest parsing functions of the GPAC framework.

Data Structure Documentation

◆ GF_MPD_Metrics

struct GF_MPD_Metrics

metrics, not yet supported

Data Fields
u32	dummy

◆ GF_MPD_ContentComponent

struct GF_MPD_ContentComponent

Content Component description

Data Fields
u32	id	content component ID
char *	type	content component mime type
char *	lang	content component language

◆ GF_MPD_Descriptor

struct GF_MPD_Descriptor

basic extensible MPD descriptor

Data Fields
MPD_EXTENSIBLE char *	scheme_id_uri	mandatory schemeid URL
char *	value	associated value, may be NULL
char *	id	associated ID, may be NULL

◆ GF_MPD_Subset

struct GF_MPD_Subset

subset, not yet supported

Data Fields
u32	dummy

◆ GF_MPD_SegmentTimelineEntry

struct GF_MPD_SegmentTimelineEntry

SegmentTimeline entry

Data Fields
u64	start_time	startTime in representation's MPD timescale
u32	duration	duration in representation's MPD timescale - mandatory
u32	repeat_count	may be 0xFFFFFFFF (-1) ( Warning this needs further testing)
u32	nb_parts	for DASH SSR

◆ GF_MPD_SegmentTimeline

struct GF_MPD_SegmentTimeline

Segment Timeline

Data Fields
GF_List *	entries	list of entries

◆ GF_MPD_ByteRange

struct GF_MPD_ByteRange

Byte range info

Data Fields
u64	start_range	start range (offset of first byte in associated resource)
u64	end_range	start range (offset of last byte in associated resource)

◆ GF_MPD_BaseURL

struct GF_MPD_BaseURL

base URL

Collaboration diagram for GF_MPD_BaseURL:

Data Fields
char *	URL	URL
char *	service_location	service location if any
GF_MPD_ByteRange *	byte_range	byte range if any
char *	redirection	GPAC internal: redirection for that URL
const char *	hls_vp_rel_url	GPAC internal: original URL relative to HLS variant playlist

◆ GF_MPD_URL

struct GF_MPD_URL

MPD URL

Collaboration diagram for GF_MPD_URL:

Data Fields
char *	sourceURL	URL of source
GF_MPD_ByteRange *	byte_range	byte range if any
Bool	is_resolved	GPAC internal - indicates the URL has already been solved

◆ GF_MPD_Fractional

struct GF_MPD_Fractional

MPD fraction

Data Fields
u32	num	numerator
u32	den	denominator

◆ GF_MPD_ISOBMFInfo

struct GF_MPD_ISOBMFInfo

GPAC internal, ISOBMFF info for base64 and other embedding, see N. Bouzakaria thesis

Data Fields
u32	trackID	ID of track/pid
char *	stsd	base64 STSD entry
s64	mediaOffset	media offset

◆ GF_MPD_SegmentBase

struct GF_MPD_SegmentBase

MPD segment base

◆ GF_MPD_MultipleSegmentBase

struct GF_MPD_MultipleSegmentBase

Multiple segment base

◆ GF_MPD_SegmentURL

struct GF_MPD_SegmentURL

segment URL

Collaboration diagram for GF_MPD_SegmentURL:

Data Fields
char *	media	media URL if any
GF_MPD_ByteRange *	media_range	media range if any
char *	index	index url if any
GF_MPD_ByteRange *	index_range	index range if any
u64	duration	duration of segment
char *	key_url	key URL of segment, HLS only
bin128	key_iv	key IV of segment, HLS only
u32	hls_seq_num	sequence number of segment, HLS only
u64	hls_utc_time	informative UTC start time of segment, HLS only
u8	hls_ll_chunk_type	0: full segment, 1: LL-HLS part, 2: independent LL-HLS part
u8	can_merge	merge flag for byte-range subsegs 0: cannot merge, 1: can merge
u8	is_first_part	merge flag for byte-range subsegs 0: cannot merge, 1: can merge
u64	first_tfdt
u64	first_pck_seq
u64	frag_start_offset
u64	frag_tfdt
u32	split_first_dur
u32	split_last_dur

◆ GF_MPD_SegmentList

struct GF_MPD_SegmentList

SegmentList

Data Fields
GF_MPD_MULTIPLE_SEGMENT_BASE GF_List *	segment_URLs	inherits multiple segment base list of segments - can be NULL if no segment
char *	xlink_href	xlink URL for external list
Bool	xlink_actuate_on_load	xlink evaluation on load if set, otherwise on use
u32	consecutive_xlink_count	GPAC internal, number of consecutive xlink while solving
char *	dasher_segment_name	GPAC internal, we store the segment template here
char *	previous_xlink_href	GPAC internal, we store the previous xlink before resolution
Bool	index_mode	GPAC internal for index mode
Bool	use_split_dur
u32	sample_duration
u32	src_timescale
u32	pid_delay
s32	first_cts_offset

◆ GF_MPD_SegmentTemplate

struct GF_MPD_SegmentTemplate

SegmentTemplate

Data Fields
GF_MPD_MULTIPLE_SEGMENT_BASE char *	media	inherits multiple segment base media segment template
char *	index	index segment template
char *	initialization	init segment template
char *	bitstream_switching	bitstream switching segment template
u32	nb_parts	part count for sub-segment representations
const char *	hls_init_name	internal, for HLS generation

◆ GF_MPD_CommonAttributes

struct GF_MPD_CommonAttributes

common attributes

◆ GF_MPD_ProducerReferenceTime

struct GF_MPD_ProducerReferenceTime

producer reference time

Collaboration diagram for GF_MPD_ProducerReferenceTime:

Data Fields
u32	ID	ID of producer
Bool	inband	is timing inband (prft in segment)
GF_MPD_ProducerRefType	type	clock type
char *	scheme	scheme for application ref type
char *	wallclock	wallclock time as UTC timestamp
u64	presentation_time	presentation time in timescale of the Representation
GF_MPD_Descriptor *	utc_timing	UTC timing desc if any

◆ GF_MPD_SubRepresentation

struct GF_MPD_SubRepresentation

SubRepresentation

Data Fields
GF_MPD_COMMON_ATTRIBUTES_ELEMENTS u32	level	inherits common attributes level of subrepresentation
char *	dependecy_level	dependency level of subrepresentation
u32	bandwidth	bandwidth of subrepresentation, MANDATORY if level set
char *	content_components	content comonents string

◆ GF_DASH_RepresentationPlayback

struct GF_DASH_RepresentationPlayback

State for representation playback, GPAC internal

Collaboration diagram for GF_DASH_RepresentationPlayback:

Data Fields
Bool	disabled	disabled
char *	cached_init_segment_url	name of cahed init segment URL (usually local cache or gmem:// url)
Bool	owned_gmem	if set indicates the associated gmem memory is owned by this representation
u64	init_start_range	start range of the init segment
u64	init_end_range	end range of the init segment
u32	probe_switch_count	number of switching probes
GF_Blob	init_segment	init segment blob
char *	key_url	associated key URL if any, for HLS
bin128	key_IV	associated key IV if any, for HLS
Double	prev_max_available_speed	previous maximum speed that this representation can be played, or 0 if it has never been played
Bool	waiting_codec_reset	after switch we may have some buffered segments of the previous representation; so codec stats at this moment is unreliable. we should wait after the codec reset
Double	bola_v	BOLA Utility
u32	enhancement_rep_index_plus_one	index of the next enhancement representation plus 1, 0 is reserved in case of the highest representation
Bool	broadcast_flag	set to true if the representation comes from a broadcast link (ATSC3, eMBMS)
Bool	vvc_rpr_switch	if set indicates the associated representations use vvc rpr switching
const char *	init_seg_name_start	start of segment name in full url
void *	udta	opaque data
u8	xlink_digest[GF_SHA1_DIGEST_SIZE]	SHA1 digest for xlinks / m3u8
Bool	not_modified	set to TRUE if not modified in the update of an xlink
u32	use_ssr	representation uses SSR, value is estimated nb parts

◆ GF_DASH_SegmenterContext

struct GF_DASH_SegmenterContext

segment context used by the dasher, GPAC internal

Collaboration diagram for GF_DASH_SegmenterContext:

Data Fields
char *	period_id	ID of active period
GF_Fraction64	period_start	start of active period
GF_Fraction64	period_duration	duration of active period
Bool	done	if GF_TRUE, representation is over
u64	last_pck_idx	niumber of last packet processed (to resume dashing)
u32	seg_number	number of last produced segment
char *	src_url	source URL
char *	init_seg	name of init segment
char *	template_seg	segment template (half-resolved, no more s in it)
char *	template_idx	index template (half-resolved, no more s in it)
u32	pid_id	ID of output PID
u32	source_pid	ID of source PID
u32	dep_pid_id	ID of source dependent PID
Bool	owns_set	indicates if this representation drives the AS segmentation
Bool	multi_pids	indicates if uses multi PID (eg, multiple sample descriptions in init segment)
GF_Fraction	dash_dur	target segment duration for this stream
u64	next_seg_start	estimated next segment start time in MPD timescale
u64	first_cts	first CTS of stream in stream timescale
u64	first_dts	first DCTS of stream in stream timescale
u32	nb_repeat	number of past repetitions of the stream
u64	ts_offset	timestamp offset (in stream timescale) due to repetitions
u32	mpd_timescale	mpd timescale of the stream
u64	est_next_dts	estimated next DTS of the stream in media timescale
Double	cumulated_subdur	cumulated sub duration of the stream (to handle partial file dashing)
Double	cumulated_dur	cumulated duration of the stream (to handle loops)
char *	mux_pids	space-separated list of PID IDs of streams muxed with this stream in a multiplex representation
u32	segs_purged	number of segments purged from the timeline and from disk
Double	dur_purged	cumulated duration of segments purged
u32	moof_sn	next moof sequence number
u32	moof_sn_inc	next moof sequence number increment
u32	last_dyn_period_id	ID of last dynamic period in manifest
Bool	subdur_forced	one subdur was forced on this rep due to looping

◆ GF_DASH_FragmentContext

struct GF_DASH_FragmentContext

fragment context info for LL-HLS

Data Fields
u64	offset	frag offset in bytes
u64	size	frag size in bytes
u32	duration	frag duration in representation timescale
Bool	independent	fragment contains an IDR

◆ GF_DASH_SegmentContext

struct GF_DASH_SegmentContext

Segment context - GPAC internal, used to produce HLS manifests and segment lists/timeline

Collaboration diagram for GF_DASH_SegmentContext:

Data Fields
u64	time	time in mpd timescale
u64	dur	duration in mpd timescale
char *	filename	name as printed in segment lists / m3u8
char *	filepath	full path of file
u32	file_size	file size in bytes
u64	file_offset	file offset in bytes
u32	index_size	index size in bytes
u64	index_offset	index offset in bytes
u32	seg_num	segment number
u32	nb_frags	number of fragment infos
GF_DASH_FragmentContext *	frags	number of fragment infos
GF_DashHLSLowLatencyType	llhls_mode	HLS LL signaling - 0: disabled, 1: byte range, 2: files
Bool	llhls_done	HLS LL segment done
Bool	encrypted	HLS set to TRUE if encrypted
char *	hls_key_uri	HLS key params (URI and co)
bin128	hls_iv	HLS IV
u64	stl_start	start time of segment timeline entry
u32	stl_rcount	repeat count of segment timeline
char *	llhas_template	LLHAS template

◆ GF_MPD_Representation

struct GF_MPD_Representation

Representation

Collaboration diagram for GF_MPD_Representation:

Data Fields
GF_MPD_COMMON_ATTRIBUTES_ELEMENTS char *	id	inherits common attributes ID of representation, mandatory
u32	bandwidth	bandwidth in bits per secon, mandatory
u32	quality_ranking	quality ranking
char *	dependency_id	dependency IDs of dependent representations
char *	media_stream_structure_id	stream structure ID, not used by GPAC
GF_List *	base_URLs	list of baseURLs if any
GF_MPD_SegmentBase *	segment_base	segment base of representation, or NULL if list or template is used
GF_MPD_SegmentList *	segment_list	segment list of representation, or NULL if base or template is used
GF_MPD_SegmentTemplate *	segment_template	segment template of representation, or NULL if base or list is used
GF_List *	sub_representations	number of subrepresentation
GF_DASH_RepresentationPlayback	playback	all the below members are GPAC internal GPAC playback implementation
u32	m3u8_media_seq_min	internal, HLS: min sequence number of segments in playlist
u32	m3u8_media_seq_max	internal, HLS: max sequence number of segments in playlist
u32	m3u8_low_latency	internal, HLS: indicate this is a low latency rep
u32	m3u8_media_seq_indep_last	internal, HLS: sequence number of last indeendent segment or PART in playlist
GF_DASH_SegmenterContext *	dasher_ctx	GPAC dasher context
GF_List *	state_seg_list	list of segment states
s32	tsb_first_entry
u32	timescale	segment timescale (for HLS)
u32	streamtype	stream type (for HLS)
u32	timescale_mpd	segment manifest timescale (for HLS)
GF_Fraction	dash_dur	dash duration
const char *	hls_single_file_name	init segment name for HLS single file
u32	nb_chan	number of audio channels - HLS only
char	str_chan[20]	CHANNELS attribute in string for special content - HLS only
Double	fps	video FPS - HLS only
const char *	groupID	groupID (for HLS)
const char **	group_ids_rend	groupIDs allowed in rendition (for HLS)
u32	nb_group_ids_rend
char *	m3u8_name	user assigned m3u8 name for this representation
char *	m3u8_var_name	generated m3u8 name if no user-assigned one
FILE *	m3u8_var_file	temp file for m3u8 generation
u8	crypto_type	for m3u8: 0: not encrypted, 1: full segment, 2: CENC CBC, 2: CENC CTR
u8	def_kms_used
u32	nb_hls_master_tags
const char **	hls_master_tags
u32	nb_hls_variant_tags
const char **	hls_variant_tags
Double	hls_ll_part_dur	target part (cmaf chunk) duration for HLS LL
u64	first_tfdt_plus_one	tfdt of first segment
u32	first_tfdt_timescale
GF_Fraction	hls_max_seg_dur
Bool	in_progress
char *	res_url
u32	trackID
Bool	sub_forced
const char *	hls_forced
const char *	init_base64

◆ GF_MPD_AdaptationSet

struct GF_MPD_AdaptationSet

AdaptationSet

Collaboration diagram for GF_MPD_AdaptationSet:

Data Fields
GF_MPD_COMMON_ATTRIBUTES_ELEMENTS s32	id	inherits common attributes ID of this set, -1 if not set
s32	group	group ID for this set, default value is -1: not set in MPD
char *	lang	language
char *	content_type	mime type
GF_MPD_Fractional *	par	picture aspect ratio
u32	min_bandwidth	min bandwidth in bps
u32	max_bandwidth	max bandwidth in bps
u32	min_width	min width in pixels
u32	max_width	max width in pixels
u32	min_height	min height in pixels
u32	max_height	max height in pixels
GF_MPD_Fractional	min_framerate	min framerate
GF_MPD_Fractional	max_framerate	max framerate
u32	ssr_mode	set if sub-segment representation is used 0: not used 1: LL-HLS compatibiliity 2: regular SSR
Bool	segment_alignment	set if segment boundaries are time-aligned across qualities
Bool	bitstream_switching	set if a single init segment is needed (no reinit at quality switch)
Bool	subsegment_alignment	set if subsegment boundaries are time-aligned across qualities
u32	subsegment_starts_with_sap	set if subsegment all start with given SAP type, 0 otherwise
GF_List *	accessibility	accessibility descriptor list if any
GF_List *	role	role descriptor list if any
GF_List *	rating	rating descriptor list if any
GF_List *	viewpoint	viewpoint descriptor list if any
GF_List *	content_component	content component descriptor list if any
GF_List *	inband_event	inband streams events
GF_List *	base_URLs	base URL (alternate location) list if any
GF_MPD_SegmentBase *	segment_base	segment base of representation, or NULL if list or template is used
GF_MPD_SegmentList *	segment_list	segment list of representation, or NULL if base or template is used
GF_MPD_SegmentTemplate *	segment_template	segment template of representation, or NULL if base or list is used
GF_List *	representations	list of representations
char *	xlink_href	xlink URL for the adaptation set
Bool	xlink_actuate_on_load	xlink evaluation on load if set, otherwise on use
void *	udta	user private, eg used by dasher
u32	nb_alt_mha_profiles	mpegh compatible profile hack
u32 *	alt_mha_profiles
Bool	alt_mha_profiles_only
u32	smooth_max_chunks	max number of valid chunks in smooth manifest
Bool	intra_only	INTRA-ONLY trick mode
Bool	use_hls_ll	adaptation set uses HLS LL
Double	hls_ll_target_frag_dur

◆ GF_MPD_Inband_Event

struct GF_MPD_Inband_Event

structure used to signal inband events

Data Fields
char *	scheme_id_uri	Scheme ID Uri of the inband event
char *	value	Value of the inband event

◆ GF_MPD_Period

struct GF_MPD_Period

Period

Collaboration diagram for GF_MPD_Period:

Data Fields
MPD_EXTENSIBLE char *	ID	inherits from extensible ID of period
u64	start	start time in milliseconds, relative to the start of the MPD
u64	duration	duration in milliseconds
Bool	bitstream_switching	set to GF_TRUE if adaptation sets in the period don't need reinit when switching quality
GF_List *	base_URLs	base URL (alternate location) list if any
GF_MPD_SegmentBase *	segment_base	segment base of representation, or NULL if list or template is used
GF_MPD_SegmentList *	segment_list	segment list of representation, or NULL if base or template is used
GF_MPD_SegmentTemplate *	segment_template	segment template of representation, or NULL if base or list is used
GF_List *	adaptation_sets	list of adaptation sets
GF_List *	subsets	list of subsets (not yet implemented)
char *	xlink_href	xlink URL for the period
Bool	xlink_actuate_on_load	xlink evaluation on load if set, otherwise on use
char *	origin_base_url	original xlink URL before resolution - GPAC internal. Used to identify already resolved xlinks in MPD updates resolve URLs in remote period if no baseURL is explictly listed
char *	broken_xlink	broken/ignored xlink, used to identify ignored xlinks in MPD updates - GPAC internal
GF_MPD_Type	type	type of the period - GPAC internal
Bool	is_preroll	period is preroll - test only, GPAC internal

◆ GF_MPD_ProgramInfo

struct GF_MPD_ProgramInfo

Program info

Data Fields
MPD_EXTENSIBLE char *	lang	inherits from extensible languae
char *	title	title
char *	source	source
char *	copyright	copyright
char *	more_info_url	URL to get more info

◆ GF_MPD

struct GF_MPD

MPD

Data Fields
MPD_EXTENSIBLE char *	ID	inherits from extensible ID of the MPD
char *	profiles	profile, mandatory
GF_MPD_Type	type	offering type
u64	availabilityStartTime	UTC of availability start anchor, expressed in milliseconds, MANDATORY if type=dynamic
u64	availabilityEndTime	UTC of availability end anchor, expressed in milliseconds
u64	publishTime	UTC of last publishing of the manifest
u64	media_presentation_duration	presentation duration in milliseconds, MANDATORY if type=static
u32	minimum_update_period	refresh rate of MPD for dynamic offering, in milliseconds
u32	min_buffer_time	minimum buffer time in milliseconds, MANDATORY
u32	time_shift_buffer_depth	time shift depth in milliseconds
u32	suggested_presentation_delay	presentation delay in milliseconds
u32	max_segment_duration	maximum segment duration in milliseconds
u32	max_subsegment_duration	maximum subsegment duration in milliseconds
GF_List *	program_infos	list of GF_MPD_ProgramInfo
GF_List *	base_URLs	list of GF_MPD_BaseURL
GF_List *	locations	list of strings
GF_List *	metrics	list of Metrics
GF_List *	periods	list of GF_MPD_Period
const char *	xml_namespace	set during parsing, to set during authoring, won't be freed by GPAC
GF_List *	utc_timings	UTC timing desc if any
GF_List *	essential_properties	Essential properties
GF_List *	supplemental_properties	Supplemental properties
Bool	inject_service_desc	inject DASHIF-LL profile service desc
Bool	index_mode
u64	gpac_init_ntp_ms	dasher init NTP clock in ms - GPAC internal
u64	gpac_next_ntp_ms	dasher next generation time NTP clock in ms - GPAC internal
u64	gpac_mpd_time	dasher current MPD time in milliseconds - GPAC internal
Bool	write_context	indicates the GPAC state info should be written
Bool	use_gpac_ext
Bool	was_dynamic	indicates this is the last static serialization of a previously dynamic MPD
Bool	create_m3u8_files	indicates the HLS variant files shall be created, otherwise temp files are used
Bool	m3u8_time	indicates to insert clock reference in variant playlists
u32	force_llhls_mode	indicates LL-HLS forced generation. 0: regular write, 1: write as byterange, 2: write as independent files
u32	nb_hls_ext_master	HLS extensions to append in the master playlist
const char **	hls_ext_master
Bool	llhls_preload	if true inject EXT-X-PRELOAD-HINT
Bool	llhls_rendition_reports	if true inject EXT-X-RENDITION-REPORT
Double	llhls_part_holdback	user-defined PART-HOLD-BACK, auto computed if <=0
GF_DashAbsoluteURLMode	hls_abs_url
Bool	m3u8_use_repid
Bool	hls_audio_primary
u32	segment_duration	requested segment duration for index mode
char *	segment_template
Bool	allow_empty_reps

◆ GF_DASHCueInfo

struct GF_DASHCueInfo

DASHer cues information

Data Fields
u32	sample_num	target splice point sample number (1-based), or 0 if not set
u64	dts	target splice point dts in cues timescale
s64	cts	target splice point cts in cues timescale
Bool	is_processed	internal flag indicating if the cues is processed or not

Macro Definition Documentation

◆ MPD_EXTENSIBLE

#define MPD_EXTENSIBLE

Value:

GF_List *x_attributes; \

GF_List *x_children; \

macro for extensible MPD element Some elments are typically overloaded in XML, we keep the attributes / children nodes here. The attributes list is NULL if no extensions were found, otherwise it is a list of GF_XMLAttribute. The children list is NULL if no extensions were found, otherwise it is a list of GF_XMLNode

◆ GF_MPD_SEGMENT_BASE

#define GF_MPD_SEGMENT_BASE

Value:

        u32 timescale;  \
        u64 presentation_time_offset;   \
        u32 time_shift_buffer_depth; /* expressed in milliseconds */    \
        GF_MPD_ByteRange *index_range;  \
        Bool index_range_exact; \
        Double availability_time_offset;        \
        GF_MPD_URL *initialization_segment;     \
        GF_MPD_URL *representation_index;       \

macro for MPD segment base

◆ GF_MPD_MULTIPLE_SEGMENT_BASE

#define GF_MPD_MULTIPLE_SEGMENT_BASE

Value:

        GF_MPD_SEGMENT_BASE     \
        u64 duration;   \
        u32 start_number;       \
        GF_MPD_SegmentTimeline *segment_timeline;       \
        u32 tsb_first_entry;    \
        GF_MPD_URL *bitstream_switching_url;    \

macro for multiple segment base WARNING: duration is expressed in GF_MPD_SEGMENT_BASE timescale unit startnumber=(u32)-1 if unused, 1 bydefault.

◆ GF_MPD_COMMON_ATTRIBUTES_ELEMENTS

#define GF_MPD_COMMON_ATTRIBUTES_ELEMENTS

Value:

        GF_List *x_attributes;  \
        GF_List *x_children;    \
        char *profiles; \
        u32 width;      \
        u32 height;     \
        GF_MPD_Fractional *sar; \
        GF_MPD_Fractional *framerate;   \
        u32 samplerate; \
        char *mime_type;        \
        char *segmentProfiles;  \
        char *codecs;   \
        u32 maximum_sap_period; \
        u32 starts_with_sap;    \
        Double max_playout_rate;        \
        Bool coding_dependency; \
        GF_MPD_ScanType scan_type;      \
        u32 selection_priority; \
        char *tag;      \
        GF_List *frame_packing; \
        GF_List *audio_channels;        \
        GF_List *content_protection;    \
        GF_List *essential_properties;  \
        GF_List *supplemental_properties;       \
        GF_List *producer_reference_time;       \
        GF_List *isobmf_tracks; \

Macro for common attributes and elements (representation, AdaptationSet, Preselection, ...)

not yet implemented; GF_List *inband_event_stream; \ GF_List *switching; \ GF_List *random_access; \ GF_List *group_labels; \ GF_List *labels; \ GF_List *content_popularity; \

MANDATORY: mime_type codecs

Typedef Documentation

◆ GF_DashAbsoluteURLMode

typedef u32 GF_DashAbsoluteURLMode

◆ GF_DashHLSLowLatencyType

typedef u32 GF_DashHLSLowLatencyType

Enumeration Type Documentation

◆ GF_DashTemplateSegmentType

enum GF_DashTemplateSegmentType

DASH template resolution mode

Enumerator
GF_DASH_TEMPLATE_SEGMENT	resolve template for segment
GF_DASH_TEMPLATE_INITIALIZATION	resolve template for initialization segment
GF_DASH_TEMPLATE_TEMPLATE	resolve template for segment template
GF_DASH_TEMPLATE_TEMPLATE_WITH_PATH	resolve template for segment template with d padding
GF_DASH_TEMPLATE_INITIALIZATION_TEMPLATE	resolve template for initialization segment template
GF_DASH_TEMPLATE_REPINDEX	resolve template for segment index
GF_DASH_TEMPLATE_REPINDEX_TEMPLATE	resolve template for segment index template
GF_DASH_TEMPLATE_REPINDEX_TEMPLATE_WITH_PATH	resolve template for segment index template with d padding
GF_DASH_TEMPLATE_INITIALIZATION_SKIPINIT	same as GF_DASH_TEMPLATE_INITIALIZATION but skip default "init" concatenation
GF_DASH_TEMPLATE_INITIALIZATION_TEMPLATE_SKIPINIT	same as GF_DASH_TEMPLATE_INITIALIZATION_TEMPLATE but skip default "init" concatenation
GF_DASH_TEMPLATE_SEGMENT_SUBNUMBER	resolve template for segment but keep $SubNumber$

◆ GF_DashAbsoluteURLMode_t

enum GF_DashAbsoluteURLMode_t

do not use absolute URL

use absolute URL only in variant playlists

use absolute URL only in master playlist

use absolute URL everywhere

Enumerator
GF_DASH_ABS_URL_NO
GF_DASH_ABS_URL_VARIANT
GF_DASH_ABS_URL_MASTER
GF_DASH_ABS_URL_BOTH

◆ GF_DashHLSLowLatencyType_t

enum GF_DashHLSLowLatencyType_t

Enumerator
GF_DASH_LL_HLS_OFF
GF_DASH_LL_HLS_BR
GF_DASH_LL_HLS_SF
GF_DASH_LL_HLS_BRSF

◆ GF_MPD_ScanType

enum GF_MPD_ScanType

MPD scan types

Enumerator
GF_MPD_SCANTYPE_UNKNOWN	unknown
GF_MPD_SCANTYPE_PROGRESSIVE	progressive
GF_MPD_SCANTYPE_INTERLACED	interlaced

◆ GF_MPD_ProducerRefType

enum GF_MPD_ProducerRefType

type of reference clock

Enumerator
GF_MPD_PRODUCER_REF_ENCODER
GF_MPD_PRODUCER_REF_CAPTURED
GF_MPD_PRODUCER_REF_APPLICATION

◆ GF_MPD_Type

enum GF_MPD_Type

MPD offering type

Enumerator
GF_MPD_TYPE_STATIC	content is statically available
GF_MPD_TYPE_DYNAMIC	content is dynamically available
GF_MPD_TYPE_DYNAMIC_LAST	content is the last if a dynamical offering, converts MPD to static (GPAC internal)

◆ GF_M3U8WriteMode

enum GF_M3U8WriteMode

write mode for M3U8

Enumerator
GF_M3U8_WRITE_ALL	write both master and child playlists
GF_M3U8_WRITE_MASTER	write master playlist only
GF_M3U8_WRITE_CHILD	write child playlist only

◆ GF_MPD_URLResolveType

enum GF_MPD_URLResolveType

MPD URL resolutio mode

Enumerator
GF_MPD_RESOLVE_URL_MEDIA
GF_MPD_RESOLVE_URL_INIT
GF_MPD_RESOLVE_URL_INDEX
GF_MPD_RESOLVE_URL_MEDIA_TEMPLATE	same as GF_MPD_RESOLVE_URL_MEDIA but does not replace $Time$ and $Number$
GF_MPD_RESOLVE_URL_MEDIA_NOSTART	same as GF_MPD_RESOLVE_URL_MEDIA but does not use startNumber
GF_MPD_RESOLVE_URL_MEDIA_TEMPLATE_NO_BASE	same as GF_MPD_RESOLVE_URL_MEDIA_TEMPLATE but ignores base URL

◆ MPDSeekMode

enum MPDSeekMode

MPD seek mode

Enumerator
MPD_SEEK_PREV	will return the segment containing the requested time
MPD_SEEK_NEAREST	will return the nearest segment start time, may be the previous or the next one

Function Documentation

◆ gf_media_mpd_format_segment_name()

GF_Err gf_media_mpd_format_segment_name	(	GF_DashTemplateSegmentType	seg_type,
		Bool	is_bs_switching,
		char *	segment_name,
		const char *	rep_id,
		const char *	base_url,
		const char *	seg_rad_name,
		const char *	seg_ext,
		u64	start_time,
		u32	bandwidth,
		u32	segment_number,
		Bool	use_segment_timeline,
		Bool	forced
	)

formats the segment name according to its template

Parameters

seg_type	the desired format mode
is_bs_switching	set to GF_TRUE to indicate the target segment is a bitstream switching segment
segment_name	target buffer where the segment name is formatted - size must be GF_MAX_PATH
rep_id	ID of the target representation
base_url	base URL, may be NULL
seg_rad_name	base name of the output segmeents (eg, myfile_ZZZ), shall not be NULL, may be empty ("")
seg_ext	segment extensions
start_time	start time of the segment in MPD timescale
bandwidth	bandwidth used for the representation
segment_number	number of the target segment
use_segment_timeline	indicates if segmentTimeline is used for segment addressing in the MPD
forced	if true, do not append extension or missing $Number$ or $Time$ when resolving template

Returns: error if any

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◆ gf_mpd_init_from_dom()

GF_Err gf_mpd_init_from_dom	(	GF_XMLNode *	root,
		GF_MPD *	mpd,
		const char *	base_url
	)

parses an MPD Element (and subtree) from DOM

Parameters

root	root of DOM parsing result
mpd	MPD structure to fill
base_url	base URL of the DOM document

Returns: error if any

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◆ gf_mpd_complete_from_dom()

GF_Err gf_mpd_complete_from_dom	(	GF_XMLNode *	root,
		GF_MPD *	mpd,
		const char *	base_url
	)

parses an MPD Period element (and subtree) from DOM

Parameters

root	root of DOM parsing result
mpd	MPD structure to fill
base_url	base URL of the DOM document

Returns: error if any

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◆ gf_mpd_new()

GF_MPD * gf_mpd_new ( )

MPD constructor

Returns: a new MPD

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◆ gf_mpd_del()

void gf_mpd_del ( GF_MPD * mpd )

MPD destructor

Parameters

mpd	the target MPD

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◆ gf_mpd_segment_url_free()

void gf_mpd_segment_url_free ( void * ptr )

frees a GF_MPD_SegmentURL structure (type-casted to void *)

Parameters

ptr	the target GF_MPD_SegmentURL

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◆ gf_mpd_segment_base_free()

void gf_mpd_segment_base_free ( void * ptr )

frees a GF_MPD_SegmentBase structure (type-casted to void *)

Parameters

ptr	the target GF_MPD_SegmentBase

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◆ gf_mpd_parse_segment_url()

void gf_mpd_parse_segment_url	(	GF_List *	container,
		GF_XMLNode *	root
	)

parses a new GF_MPD_SegmentURL from its DOM description

Parameters

container	the container list where to insert the segment URL
root	the DOM description of the segment URL

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◆ gf_mpd_parse_date()

u64 gf_mpd_parse_date ( const char *const attr )

parses a xsDateTime

Parameters

attr	the date time value

Returns: value as UTC timestamp

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◆ gf_mpd_url_free()

void gf_mpd_url_free ( void * _item )

frees a GF_MPD_URL structure (type-casted to void *)

Parameters

_item the target GF_MPD_URL

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◆ gf_mpd_period_new()

GF_MPD_Period * gf_mpd_period_new ( )

MPD Period constructor

Returns: a new MPD Period

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◆ gf_mpd_period_free()

void gf_mpd_period_free ( void * _item )

MPD Period destructor

Parameters

_item the MPD Period to free

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◆ gf_mpd_write()

GF_Err gf_mpd_write	(	GF_MPD const *const	mpd,
		FILE *	out,
		Bool	compact
	)

writes an MPD to a file stream

Parameters

mpd	the target MPD to write
out	the target file object
compact	if set, removes all new line and indentation in the output

Returns: error if any

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◆ gf_mpd_write_file()

GF_Err gf_mpd_write_file	(	GF_MPD const *const	mpd,
		const char *	file_name
	)

writes an MPD to a local file

Parameters

mpd	the target MPD to write
file_name	the target file name

Returns: error if any

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◆ gf_mpd_write_m3u8_master_playlist()

GF_Err gf_mpd_write_m3u8_master_playlist	(	GF_MPD const *const	mpd,
		FILE *	out,
		const char *	m3u8_name,
		GF_MPD_Period *	period,
		GF_M3U8WriteMode	mode
	)

writes an MPD to a m3u8 playlist

Parameters

mpd	the target MPD to write
out	the target file object
m3u8_name	the base m3u8 name to use (needed when generating variant playlist file names)
period	the MPD period for that m3u8
mode	the write operation desired

Returns: error if any

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◆ gf_mpd_parse_period()

GF_Err gf_mpd_parse_period	(	GF_MPD *	mpd,
		GF_XMLNode *	root
	)

parses an MPD Period and appends it to the MPD period list

Parameters

mpd	the target MPD to write
root	the DOM element describing the period

Returns: error if any

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◆ gf_mpd_descriptor_new()

GF_MPD_Descriptor * gf_mpd_descriptor_new	(	const char *	id,
		const char *	uri,
		const char *	value
	)

creates a new MPD descriptor

Parameters

id	the descriptor ID, may be NULL
uri	the descriptor schemeid URI, mandatory
value	the descriptor value, may be NULL

Returns: the new descriptor or NULL if error

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◆ gf_mpd_adaptation_set_new()

GF_MPD_AdaptationSet * gf_mpd_adaptation_set_new ( )

creates a new MPD AdaptationSet

Returns: the new GF_MPD_AdaptationSet or NULL if error

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◆ gf_m3u8_to_mpd()

GF_Err gf_m3u8_to_mpd	(	const char *	m3u8_file,
		const char *	base_url,
		const char *	mpd_file,
		u32	reload_count,
		char *	mimeTypeForM3U8Segments,
		Bool	do_import,
		Bool	use_mpd_templates,
		Bool	use_segment_timeline,
		GF_FileDownload *	getter,
		GF_MPD *	mpd,
		Bool	parse_sub_playlist,
		Bool	keep_files
	)

converts M3U8 to MPD - getter is optional (download will still be processed if NULL)

Parameters

m3u8_file	the path to the local m3u8 master playlist file
base_url	the original URL of the file if any
mpd_file	the destination MPD file, or NULL when filling an MPD structure
reload_count	number of times the manifest was reloaded
mimeTypeForM3U8Segments	default mime type for the segments in case not found in the m3u8
do_import	if GF_TRUE, will try to load the media segments to extract more info
use_mpd_templates	if GF_TRUE, will use MPD SegmentTemplate instead of SegmentList (only if parse_sub_playlist is GF_TRUE)
use_segment_timeline	if GF_TRUE, uses SegmentTimeline to describe the varying duration of segments
getter	HTTP interface object
mpd	MPD structure to fill, or NULL if converting to file
parse_sub_playlist	if GF_TRUE, parses sub playlists, otherwise only the master playlist is parsed and xlink are added on each representation to the target m3u8 sub playlist
keep_files	if GF_TRUE, will not delete any files downloaded in the conversion process

Returns: error if any

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◆ gf_m3u8_solve_representation_xlink()

GF_Err gf_m3u8_solve_representation_xlink	(	GF_MPD_Representation *	rep,
		const char *	base_url,
		GF_FileDownload *	getter,
		Bool *	is_static,
		u64 *	duration,
		u8	signature[GF_SHA1_DIGEST_SIZE]
	)

solves an m3u8 xlink on a representation, and fills the SegmentList accordingly

Parameters

rep	the target representation
base_url	base URL of master manifest (representation xlink is likely relative to this URL)
getter	HTTP interface object
is_static	set to GF_TRUE if the variant subplaylist is on demand
duration	set to the duration of the parsed subplaylist
signature	SHA1 digest of last solved version, updated if changed

Returns: error if any, GF_EOS if no changes

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◆ gf_mpd_solve_segment_list_xlink()

GF_MPD_SegmentList * gf_mpd_solve_segment_list_xlink	(	GF_MPD *	mpd,
		GF_XMLNode *	root
	)

creates a segment list from a remote segment list DOM root

Parameters

mpd	the target MPD to write
root	the DOM element describing the segment list

Returns: a new segment list, or NULL if error

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◆ gf_mpd_init_smooth_from_dom()

GF_Err gf_mpd_init_smooth_from_dom	(	GF_XMLNode *	root,
		GF_MPD *	mpd,
		const char *	default_base_url
	)

inits an MPD from a smooth manifest root node

Parameters

root	the root node of a smooth manifest
mpd	the MPD to fill
default_base_url	the default URL of the smooth manifest

Returns: error if any

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◆ gf_mpd_delete_segment_list()

void gf_mpd_delete_segment_list ( GF_MPD_SegmentList * segment_list )

deletes a segment list

Parameters

segment_list the segment list to delete

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◆ gf_mpd_del_list()

void gf_mpd_del_list	(	GF_List *	list,
		void()(void )	__destructor,
		Bool	reset_only
	)

deletes a list content and optionally destructs the list

Parameters

list	the target list
__destructor	the destructor function to use to destroy list items
reset_only	if GF_TRUE, does not destroy the target list

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◆ gf_mpd_descriptor_free()

void gf_mpd_descriptor_free ( void * item )

deletes a GF_MPD_Descriptor object

Parameters

item	the descriptor to delete

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◆ gf_mpd_split_adaptation_sets()

GF_Err gf_mpd_split_adaptation_sets ( GF_MPD * mpd )

splits all adaptation sets of a source MPD, creating one adaptation set per quality of each orgingal adaptation sets

Parameters

mpd	the target MPD

Returns: error if any

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◆ gf_mpd_smooth_to_mpd()

GF_Err gf_mpd_smooth_to_mpd	(	char *	smooth_file,
		GF_MPD *	mpd,
		const char *	default_base_url
	)

converts a smooth manifest (local file) to an MPD

Parameters

smooth_file	local path to the smooth manifest
mpd	MPD structure to fill
default_base_url	the default URL of the smooth manifest

Returns: error if any

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◆ gf_mpd_get_base_url_count()

u32 gf_mpd_get_base_url_count	(	GF_MPD *	mpd,
		GF_MPD_Period *	period,
		GF_MPD_AdaptationSet *	set,
		GF_MPD_Representation *	rep
	)

get the number of base URLs for the given representation. This cumuluates all base URLs at MPD, period, AdaptationSet and Representation levels

Parameters

mpd	the target MPD
period	the target period
set	the target adaptation set
rep	the target representation

Returns: the number of base URLs

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◆ gf_mpd_resolve_url()

GF_Err gf_mpd_resolve_url	(	GF_MPD *	mpd,
		GF_MPD_Representation *	rep,
		GF_MPD_AdaptationSet *	set,
		GF_MPD_Period *	period,
		const char *	mpd_url,
		u32	base_url_index,
		GF_MPD_URLResolveType	resolve_type,
		u32	item_index,
		u32	nb_segments_removed,
		char **	out_url,
		u64 *	out_range_start,
		u64 *	out_range_end,
		u64 *	segment_duration,
		Bool *	is_in_base_url,
		char **	out_key_url,
		bin128 *	key_iv,
		u32 *	out_start_number,
		s32	subseg_index
	)

resolves a URL based for a given segment, based on the MPD url, the type of resolution

Parameters

mpd	the target MPD
rep	the target Representation
set	the target AdaptationSet
period	the target Period
mpd_url	the original URL of the MPD
base_url_index	0-based index of the baseURL to use
resolve_type	the type of URL resolution desired
item_index	the index of the target segment (startNumber based)
nb_segments_removed	number of segments removed when purging the MPD after updates (can be 0). The start number will be offset by this value
out_url	set to the resolved URL, to be freed by caller
out_range_start	set to the resolved start range, 0 if no range
out_range_end	set to the resolved end range, 0 if no range
segment_duration	set to the resolved segment duartion, 0 if unknown
is_in_base_url	set to GF_TRUE if the resuloved URL is a sub-part of the baseURL (optional, may be NULL)
out_key_url	set to the key URL for the segment for HLS (optional, may be NULL)
key_iv	set to the key IV for the segment for HLS (optional, may be NULL)
out_start_number	set to the start_number used (optional, may be NULL)
subseg_index	index of subseg, -1 means no SSR is used

Returns: error if any

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◆ gf_mpd_get_duration()

Double gf_mpd_get_duration ( GF_MPD * mpd )

get duration of the presentation

Parameters

mpd	the target MPD

Returns: the duration in seconds

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◆ gf_mpd_resolve_segment_duration()

void gf_mpd_resolve_segment_duration	(	GF_MPD_Representation *	rep,
		GF_MPD_AdaptationSet *	set,
		GF_MPD_Period *	period,
		u64 *	out_duration,
		u32 *	out_timescale,
		u64 *	out_pts_offset,
		GF_MPD_SegmentTimeline **	out_segment_timeline
	)

gets the duration of media segments

Parameters

rep	the target Representation
set	the target AdaptationSet
period	the target Period
out_duration	set to the average media segment duration
out_timescale	set to the MPD timescale used by this representation
out_pts_offset	set to the presentation time offset if any (optional, may be NULL)
out_segment_timeline	set to the segment timeline description if any (optional, may be NULL)

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◆ gf_mpd_get_segment_start_time_with_timescale()

GF_Err gf_mpd_get_segment_start_time_with_timescale	(	s32	in_segment_index,
		GF_MPD_Period const *const	in_period,
		GF_MPD_AdaptationSet const *const	in_set,
		GF_MPD_Representation const *const	in_rep,
		u64 *	out_segment_start_time,
		u64 *	out_opt_segment_duration,
		u32 *	out_opt_scale
	)

gets the start_time from the segment index of a period/set/rep

Parameters

in_segment_index	the index of the target segment (startNumber based)
in_period	the target Period
in_set	the target AdaptationSet
in_rep	the target Representation
out_segment_start_time	set to the MPD start time of the segment
out_opt_segment_duration	set to the segment duration (optional, may be NULL)
out_opt_scale	set to the MPD timescale for this segment (optional, may be NULL)

Returns: error if any

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◆ gf_mpd_seek_in_period()

GF_Err gf_mpd_seek_in_period	(	Double	seek_time,
		MPDSeekMode	seek_mode,
		GF_MPD_Period const *const	in_period,
		GF_MPD_AdaptationSet const *const	in_set,
		GF_MPD_Representation const *const	in_rep,
		u32 *	out_segment_index,
		Double *	out_opt_seek_time,
		Double *	out_seg_dur
	)

returns the segment index in the given period for the given time

Parameters

seek_time	the desired time in seconds
seek_mode	the desired seek mode
in_period	the target Period
in_set	the target AdaptationSet
in_rep	the target Representation
out_segment_index	the corresponding segment index
out_opt_seek_time	the corresponding seek time (start time of segment in seconds) (optional, may be NULL)
out_seg_dur	the corresponding segment duration in seconds, may be null

Returns: error if any

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◆ gf_mpd_base_url_free()

void gf_mpd_base_url_free ( void * _item )

deletes a GF_MPD_BaseURL structure (type-casted to void *)

Parameters

_item the GF_MPD_BaseURL to free

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◆ gf_mpd_representation_new()

GF_MPD_Representation * gf_mpd_representation_new ( )

creates a new GF_MPD_Representation

Returns: the new representation

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◆ gf_mpd_representation_free()

void gf_mpd_representation_free ( void * _item )

deletes a GF_MPD_Representation structure (type-casted to void *)

Parameters

_item the GF_MPD_Representation to free

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◆ gf_mpd_segmentimeline_new()

GF_MPD_SegmentTimeline * gf_mpd_segmentimeline_new ( )

creates a new GF_MPD_SegmentTimeline

Returns: the new segment timeline

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◆ gf_mpd_load_cues()

GF_Err gf_mpd_load_cues	(	const char *	cues_file,
		u32	stream_id,
		u32 *	cues_timescale,
		Bool *	use_edit_list,
		s32 *	ts_offset,
		GF_DASHCueInfo **	out_cues,
		u32 *	nb_cues
	)

loads a cue file and allocates cues as needed

Parameters

cues_file	the XML cue file to load
stream_id	the ID of the stream for which we load cues (typically, TrackID or GF_PROP_PID_ID)
cues_timescale	set to the timescale used in the cues document
use_edit_list	set to GF_TRUE if the cts values of cues have edit list applied (i.e. are ISOBMFF presentation times)
ts_offset	set to the timestamp offset to subtract from DTS/CTS values
out_cues	set to a newly allocated list of cues, to free by the caller
nb_cues	set to the number of cues parsed

Returns: error if any

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◆ gf_mpd_get_descriptor()

GF_MPD_Descriptor * gf_mpd_get_descriptor	(	GF_List *	desclist,
		char *	scheme_id
	)

gets first MPD descriptor from descriptor list for a given scheme_id

Parameters

desclist	list of MPD Descriptors
scheme_id	scheme ID to look for

Returns: descriptor if found, NUL otherwise

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◆ gf_mpd_resolve_subnumber()

char * gf_mpd_resolve_subnumber	(	char *	llhas_template,
		char *	segment_filename,
		u32	part_idx
	)

resolve the SubNumber template, utility function used by some output filters

Parameters

llhas_template	template for the segment, or NULL if none
segment_filename	segment filename
part_idx	index of part to use

Returns: resolved file name for the given part of the segment

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Data Structures

Macros

Typedefs

Enumerations

Functions

Detailed Description

Data Structure Documentation

◆ GF_MPD_Metrics

◆ GF_MPD_ContentComponent

◆ GF_MPD_Descriptor

◆ GF_MPD_Subset

◆ GF_MPD_SegmentTimelineEntry

◆ GF_MPD_SegmentTimeline

◆ GF_MPD_ByteRange

◆ GF_MPD_BaseURL

◆ GF_MPD_URL

◆ GF_MPD_Fractional

◆ GF_MPD_ISOBMFInfo

◆ GF_MPD_SegmentBase

◆ GF_MPD_MultipleSegmentBase

◆ GF_MPD_SegmentURL

◆ GF_MPD_SegmentList

◆ GF_MPD_SegmentTemplate

◆ GF_MPD_CommonAttributes

◆ GF_MPD_ProducerReferenceTime

◆ GF_MPD_SubRepresentation

◆ GF_DASH_RepresentationPlayback

◆ GF_DASH_SegmenterContext

◆ GF_DASH_FragmentContext

◆ GF_DASH_SegmentContext

◆ GF_MPD_Representation

◆ GF_MPD_AdaptationSet

◆ GF_MPD_Inband_Event

◆ GF_MPD_Period

◆ GF_MPD_ProgramInfo

◆ GF_MPD

◆ GF_DASHCueInfo

Macro Definition Documentation

◆ MPD_EXTENSIBLE

◆ GF_MPD_SEGMENT_BASE

◆ GF_MPD_MULTIPLE_SEGMENT_BASE

◆ GF_MPD_COMMON_ATTRIBUTES_ELEMENTS

Typedef Documentation

◆ GF_DashAbsoluteURLMode

◆ GF_DashHLSLowLatencyType

Enumeration Type Documentation

◆ GF_DashTemplateSegmentType

◆ GF_DashAbsoluteURLMode_t

◆ GF_DashHLSLowLatencyType_t

◆ GF_MPD_ScanType

◆ GF_MPD_ProducerRefType

◆ GF_MPD_Type

◆ GF_M3U8WriteMode

◆ GF_MPD_URLResolveType

◆ MPDSeekMode

Function Documentation

◆ gf_media_mpd_format_segment_name()

◆ gf_mpd_init_from_dom()

◆ gf_mpd_complete_from_dom()

◆ gf_mpd_new()

◆ gf_mpd_del()

◆ gf_mpd_segment_url_free()

◆ gf_mpd_segment_base_free()

◆ gf_mpd_parse_segment_url()

◆ gf_mpd_parse_date()

◆ gf_mpd_url_free()

◆ gf_mpd_period_new()

◆ gf_mpd_period_free()

◆ gf_mpd_write()

◆ gf_mpd_write_file()

◆ gf_mpd_write_m3u8_master_playlist()

◆ gf_mpd_parse_period()

◆ gf_mpd_descriptor_new()

◆ gf_mpd_adaptation_set_new()

◆ gf_m3u8_to_mpd()

◆ gf_m3u8_solve_representation_xlink()

◆ gf_mpd_solve_segment_list_xlink()

◆ gf_mpd_init_smooth_from_dom()

◆ gf_mpd_delete_segment_list()

◆ gf_mpd_del_list()