dash_segmenter.c File Reference

#include <gpac/internal/media_dev.h>
#include <gpac/constants.h>
#include <gpac/mpegts.h>
#include <gpac/config_file.h>
#include <gpac/network.h>
#include <time.h>
#include <gpac/internal/isomedia_dev.h>

Include dependency graph for dash_segmenter.c:

Data Structures
struct	_dash_component
struct	GF_DASHSegmenterOptions
struct	GF_DashSegInput
struct	GF_ISOMTrackFragmenter
struct	GF_TSSegmenter

Macros
#define	EXTRACT_FORMAT(_nb_chars)
#define	NB_TSPCK_IO_BYTES   18800

Functions
GF_Err	gf_media_mpd_format_segment_name (GF_DashTemplateSegmentType seg_type, Bool is_bs_switching, char *segment_name, const char *output_file_name, const char *rep_id, const char *seg_rad_name, const char *seg_ext, u64 start_time, u32 bandwidth, u32 segment_number, Bool use_segment_timeline)
GF_Err	gf_dasher_store_segment_info (GF_DASHSegmenterOptions *dash_cfg, const char *SegmentName, Double segStartTime)
GF_Err	gf_media_get_rfc_6381_codec_name (GF_ISOFile *movie, u32 track, char *szCodec)
static u64	isom_get_next_sap_time (GF_ISOFile *input, u32 track, u32 sample_count, u32 sample_num)
static GF_Err	gf_media_isom_segment_file (GF_ISOFile *input, const char *output_file, Double max_duration_sec, GF_DASHSegmenterOptions *dash_cfg, GF_DashSegInput *dash_input, Bool first_in_set)
static GF_Err	dasher_isom_get_input_components_info (GF_DashSegInput *input, GF_DASHSegmenterOptions *opts)
static GF_Err	dasher_isom_classify_input (GF_DashSegInput *dash_inputs, u32 nb_dash_inputs, u32 input_idx, u32 *current_group_id, u32 *max_sap_type)
static GF_Err	dasher_isom_create_init_segment (GF_DashSegInput *dash_inputs, u32 nb_dash_inputs, u32 adaptation_set, char *szInitName, const char *tmpdir, GF_DASHSegmenterOptions *dash_opts, Bool *disable_bs_switching)
static GF_Err	dasher_isom_segment_file (GF_DashSegInput *dash_input, const char *szOutName, GF_DASHSegmenterOptions *dash_cfg, Bool first_in_set)
static GF_Err	dasher_generic_classify_input (GF_DashSegInput *dash_inputs, u32 nb_dash_inputs, u32 input_idx, u32 *current_group_id, u32 *max_sap_type)
static GF_Err	dasher_generic_get_components_info (GF_DashSegInput *input, GF_DASHSegmenterOptions *opts)
static void	m2ts_sidx_add_entry (GF_SegmentIndexBox *sidx, Bool ref_type, u32 size, u32 duration, Bool first_is_SAP, u32 sap_type, u32 RAP_delta_time)
static void	m2ts_sidx_finalize_size (GF_TSSegmenter *index_info, u64 file_size)
static void	m2ts_sidx_flush_entry (GF_TSSegmenter *index_info)
static void	m2ts_check_indexing (GF_TSSegmenter *index_info)
static void	dash_m2ts_event_check_pat (GF_M2TS_Demuxer *ts, u32 evt_type, void *par)
static void	dash_m2ts_event (GF_M2TS_Demuxer *ts, u32 evt_type, void *par)
static GF_Err	dasher_get_ts_demux (GF_TSSegmenter *ts_seg, const char *file, u32 probe_mode)
static void	dasher_del_ts_demux (GF_TSSegmenter *ts_seg)
static GF_Err	dasher_mp2t_get_components_info (GF_DashSegInput *dash_input, GF_DASHSegmenterOptions *dash_opts)
static GF_Err	dasher_mp2t_segment_file (GF_DashSegInput *dash_input, const char *szOutName, GF_DASHSegmenterOptions *dash_cfg, Bool first_in_set)
static char *	gf_dash_get_representationID (GF_DashSegInput *inputs, u32 nb_dash_inputs, const char *file_name, u32 trackNum)
GF_Err	gf_dash_segmenter_probe_input (GF_DashSegInput **io_dash_inputs, u32 *nb_dash_inputs, u32 idx)
static GF_Err	write_mpd_header (FILE *mpd, const char *mpd_name, GF_Config *dash_ctx, GF_DashProfile profile, Bool is_mpeg2, const char *title, const char *source, const char *copyright, const char *moreInfoURL, const char **mpd_base_urls, u32 nb_mpd_base_urls, Bool dash_dynamic, u32 time_shift_depth, Double mpd_duration, Double mpd_update_period, Double min_buffer, u32 ast_shift_sec)
static GF_Err	write_period_header (FILE *mpd, const char *szID, Double period_start, Double period_duration, Bool dash_dynamic)
static GF_Err	write_adaptation_header (FILE *mpd, GF_DashProfile profile, Bool use_url_template, u32 single_file_mode, GF_DashSegInput *first_rep, Bool bitstream_switching_mode, u32 max_width, u32 max_height, char *szMaxFPS, char *szLang, const char *szInitSegment)
static GF_Err	gf_dasher_init_context (GF_Config *dash_ctx, u32 *dynamic, u32 *timeShiftBufferDepth, const char *periodID, u32 ast_shift_sec)
u32	gf_dasher_next_update_time (GF_Config *dash_ctx, u32 mpd_update_time)
static Bool	gf_dasher_cleanup (GF_Config *dash_ctx, u32 dash_dynamic, u32 mpd_update_time, u32 time_shift_depth, Double dash_duration, u32 ast_shift_sec)
static u32	gf_dash_get_dependency_bandwidth (GF_DashSegInput *inputs, u32 nb_dash_inputs, const char *file_name, u32 trackNum)
GF_Err	gf_dasher_segment_files (const char *mpdfile, GF_DashSegmenterInput *inputs, u32 nb_inputs, GF_DashProfile dash_profile, const char *mpd_title, const char *mpd_source, const char *mpd_copyright, const char *mpd_moreInfoURL, const char **mpd_base_urls, u32 nb_mpd_base_urls, u32 use_url_template, Bool use_segment_timeline, Bool single_segment, Bool single_file, GF_DashSwitchingMode bitstream_switching, Bool seg_at_rap, Double dash_duration, char *seg_name, char *seg_ext, u32 segment_marker_4cc, Double frag_duration, s32 subsegs_per_sidx, Bool daisy_chain_sidx, Bool frag_at_rap, const char *tmpdir, GF_Config *dash_ctx, u32 dash_dynamic, u32 mpd_update_time, u32 time_shift_depth, Double subduration, Double min_buffer, u32 ast_shift_sec, u32 dash_scale, Bool fragments_in_memory, u32 initial_moof_sn, u64 initial_tfdt, Bool no_fragments_defaults, Bool pssh_moof)

---

Data Structure Documentation

struct _dash_component

Collaboration diagram for _dash_component:

Data Fields
u32	ID
u32	media_type
char	szCodec[50]
u32	width
u32	height
u32	fps_num
u32	fps_denum
u32	sar_num
u32	sar_denum
u32	max_sap
u32	sample_rate
u32	channels
char	szLang[5]

struct GF_DASHSegmenterOptions

Collaboration diagram for GF_DASHSegmenterOptions:

Data Fields
Double	segment_duration
Double	subduration
Double	fragment_duration
u32	dash_scale
Bool	segments_start_with_rap
FILE *	mpd
const char *	mpd_name
const char *	seg_rad_name
const char *	seg_ext
s32	subsegs_per_sidx
Bool	daisy_chain_sidx
u32	use_url_template
Bool	use_segment_timeline
u32	single_file_mode
u32	segment_marker_4cc
s32	time_shift_depth
const char *	bs_switch_segment_file
Bool	inband_param_set
Bool	variable_seg_rad_name
Bool	fragments_start_with_rap
Bool	memory_mode
Bool	pssh_moof
GF_Config *	dash_ctx
const char *	tmpdir
u32	initial_moof_sn
u64	initial_tfdt
Bool	no_fragments_defaults

struct GF_ISOMTrackFragmenter

Collaboration diagram for GF_ISOMTrackFragmenter:

Data Fields
Bool	is_ref_track
Bool	done
u32	TrackID
u32	SampleNum
u32	SampleCount
u64	FragmentLength
u32	OriginalTrack
u32	finalSampleDescriptionIndex
u32	TimeScale
u32	MediaType
u32	DefaultDuration
u32	InitialTSOffset
u64	last_sample_cts
u64	next_sample_dts
Bool	all_sample_raps
Bool	splitable
u32	split_sample_dts_shift
s32	media_time_to_pres_time_shift

struct GF_TSSegmenter

Collaboration diagram for GF_TSSegmenter:

Data Fields
FILE *	src
GF_M2TS_Demuxer *	ts
u64	file_size
u32	bandwidth
Bool	has_seen_pat
u64	suspend_indexing
Double	segment_duration
Bool	segment_at_rap
FILE *	index_file
GF_BitStream *	index_bs
u32	subduration
u32	skip_nb_segments
u64	duration_at_last_pass
GF_SegmentIndexBox *	sidx
GF_PcrInfoBox *	pcrb
u32	reference_pid
GF_M2TS_PES *	reference_stream
u32	nb_pes_in_segment
u64	first_PTS
u64	PCR_DTS_initial_diff
u64	base_PTS
u64	base_offset
u64	last_PTS
u64	last_DTS
u32	last_offset
u32	last_frame_duration
u64	prev_base_PTS
u64	prev_base_offset
u64	prev_last_PTS
u32	prev_last_offset
u32	SAP_type
Bool	first_pes_sap
u64	first_SAP_PTS
u32	first_SAP_offset
u64	prev_last_SAP_PTS
u32	prev_last_SAP_offset
u64	last_SAP_PTS
u32	last_SAP_offset
Bool	pes_after_last_pat_is_sap
u64	interpolated_pcr_value
u64	last_pcr_value
u32	last_pat_position
u32	first_pat_position
u32	prev_last_pat_position
Bool	first_pat_position_valid
Bool	first_pes_after_last_pat
u32	pat_version
u32	last_cat_position
u32	first_cat_position
u32	prev_last_cat_position
Bool	first_cat_position_valid
u32	cat_version
u32	last_pmt_position
u32	first_pmt_position
u32	prev_last_pmt_position
Bool	first_pmt_position_valid
u32	pmt_version
u32	last_pcr_position
u32	first_pcr_position
Bool	first_pcr_position_valid
u32	prev_last_pcr_position

Macro Definition Documentation

#define EXTRACT_FORMAT

(

_nb_chars

)

Value:

strcpy(szFmt, "%d");    \
                        char_template+=_nb_chars;       \
                        if (seg_rad_name[char_template]=='%') { \
                                char *sep = strchr(seg_rad_name+char_template, '$');    \
                                if (sep) {      \
                                        sep[0] = 0;     \
                                        strcpy(szFmt, seg_rad_name+char_template);      \
                                        char_template += (u32) strlen(seg_rad_name+char_template);      \
                                        sep[0] = '$';   \
                                }       \
                        }       \
                        char_template+=1;       \

#define NB_TSPCK_IO_BYTES   18800

Function Documentation

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

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GF_Err gf_dasher_store_segment_info	(	GF_DASHSegmenterOptions *	dash_cfg,
		const char *	SegmentName,
		Double	segStartTime
	)

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GF_Err gf_media_get_rfc_6381_codec_name	(	GF_ISOFile *	movie,
		u32	track,
		char *	szCodec
	)

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static u64 isom_get_next_sap_time ( GF_ISOFile *  input, u32  track, u32  sample_count, u32  sample_num  )

static

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static GF_Err gf_media_isom_segment_file ( GF_ISOFile *  input, const char *  output_file, Double  max_duration_sec, GF_DASHSegmenterOptions *  dash_cfg, GF_DashSegInput *  dash_input, Bool  first_in_set  )

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static GF_Err dasher_isom_get_input_components_info ( GF_DashSegInput *  input, GF_DASHSegmenterOptions *  opts  )

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static GF_Err dasher_isom_classify_input ( GF_DashSegInput *  dash_inputs, u32  nb_dash_inputs, u32  input_idx, u32 *  current_group_id, u32 *  max_sap_type  )

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static GF_Err dasher_isom_create_init_segment ( GF_DashSegInput *  dash_inputs, u32  nb_dash_inputs, u32  adaptation_set, char *  szInitName, const char *  tmpdir, GF_DASHSegmenterOptions *  dash_opts, Bool *  disable_bs_switching  )

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static GF_Err dasher_isom_segment_file ( GF_DashSegInput *  dash_input, const char *  szOutName, GF_DASHSegmenterOptions *  dash_cfg, Bool  first_in_set  )

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static GF_Err dasher_generic_classify_input ( GF_DashSegInput *  dash_inputs, u32  nb_dash_inputs, u32  input_idx, u32 *  current_group_id, u32 *  max_sap_type  )

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static GF_Err dasher_generic_get_components_info ( GF_DashSegInput *  input, GF_DASHSegmenterOptions *  opts  )

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static void m2ts_sidx_add_entry ( GF_SegmentIndexBox *  sidx, Bool  ref_type, u32  size, u32  duration, Bool  first_is_SAP, u32  sap_type, u32  RAP_delta_time  )

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static void m2ts_sidx_finalize_size ( GF_TSSegmenter *  index_info, u64  file_size  )

static

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static void m2ts_sidx_flush_entry ( GF_TSSegmenter *  index_info )

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static void m2ts_check_indexing ( GF_TSSegmenter *  index_info )

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static void dash_m2ts_event_check_pat ( GF_M2TS_Demuxer *  ts, u32  evt_type, void *  par  )

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static void dash_m2ts_event ( GF_M2TS_Demuxer *  ts, u32  evt_type, void *  par  )

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static GF_Err dasher_get_ts_demux ( GF_TSSegmenter *  ts_seg, const char *  file, u32  probe_mode  )

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static void dasher_del_ts_demux ( GF_TSSegmenter *  ts_seg )

static

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static GF_Err dasher_mp2t_get_components_info ( GF_DashSegInput *  dash_input, GF_DASHSegmenterOptions *  dash_opts  )

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static GF_Err dasher_mp2t_segment_file ( GF_DashSegInput *  dash_input, const char *  szOutName, GF_DASHSegmenterOptions *  dash_cfg, Bool  first_in_set  )

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static char* gf_dash_get_representationID ( GF_DashSegInput *  inputs, u32  nb_dash_inputs, const char *  file_name, u32  trackNum  )

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GF_Err gf_dash_segmenter_probe_input	(	GF_DashSegInput **	io_dash_inputs,
		u32 *	nb_dash_inputs,
		u32	idx
	)

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static GF_Err write_mpd_header ( FILE *  mpd, const char *  mpd_name, GF_Config *  dash_ctx, GF_DashProfile  profile, Bool  is_mpeg2, const char *  title, const char *  source, const char *  copyright, const char *  moreInfoURL, const char **  mpd_base_urls, u32  nb_mpd_base_urls, Bool  dash_dynamic, u32  time_shift_depth, Double  mpd_duration, Double  mpd_update_period, Double  min_buffer, u32  ast_shift_sec  )

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static GF_Err write_period_header ( FILE *  mpd, const char *  szID, Double  period_start, Double  period_duration, Bool  dash_dynamic  )

static

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static GF_Err write_adaptation_header ( FILE *  mpd, GF_DashProfile  profile, Bool  use_url_template, u32  single_file_mode, GF_DashSegInput *  first_rep, Bool  bitstream_switching_mode, u32  max_width, u32  max_height, char *  szMaxFPS, char *  szLang, const char *  szInitSegment  )

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static GF_Err gf_dasher_init_context ( GF_Config *  dash_ctx, u32 *  dynamic, u32 *  timeShiftBufferDepth, const char *  periodID, u32  ast_shift_sec  )

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u32 gf_dasher_next_update_time	(	GF_Config *	dash_ctx,
		u32	mpd_update_time
	)

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static Bool gf_dasher_cleanup ( GF_Config *  dash_ctx, u32  dash_dynamic, u32  mpd_update_time, u32  time_shift_depth, Double  dash_duration, u32  ast_shift_sec  )

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static u32 gf_dash_get_dependency_bandwidth ( GF_DashSegInput *  inputs, u32  nb_dash_inputs, const char *  file_name, u32  trackNum  )

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GF_Err gf_dasher_segment_files	(	const char *	mpdfile,
		GF_DashSegmenterInput *	inputs,
		u32	nb_inputs,
		GF_DashProfile	dash_profile,
		const char *	mpd_title,
		const char *	mpd_source,
		const char *	mpd_copyright,
		const char *	mpd_moreInfoURL,
		const char **	mpd_base_urls,
		u32	nb_mpd_base_urls,
		u32	use_url_template,
		Bool	use_segment_timeline,
		Bool	single_segment,
		Bool	single_file,
		GF_DashSwitchingMode	bitstream_switching,
		Bool	seg_at_rap,
		Double	dash_duration,
		char *	seg_name,
		char *	seg_ext,
		u32	segment_marker_4cc,
		Double	frag_duration,
		s32	subsegs_per_sidx,
		Bool	daisy_chain_sidx,
		Bool	frag_at_rap,
		const char *	tmpdir,
		GF_Config *	dash_ctx,
		u32	dash_dynamic,
		u32	mpd_update_time,
		u32	time_shift_depth,
		Double	subduration,
		Double	min_buffer,
		u32	ast_shift_sec,
		u32	dash_scale,
		Bool	fragments_in_memory,
		u32	initial_moof_sn,
		u64	initial_tfdt,
		Bool	no_fragments_defaults,
		Bool	pssh_moof
	)

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