Collaboration diagram for ISOBMFF Sample Descriptions:

Data Structures
struct	GF_GenericSampleDescription

struct	GF_3GPConfig

struct	GF_DIMSDescription

struct	GF_ISOM_Y3D_Info

Enumerations
enum	GF_ISOMAVCType { GF_ISOM_AVCTYPE_NONE =0 , GF_ISOM_AVCTYPE_AVC_ONLY , GF_ISOM_AVCTYPE_AVC_SVC , GF_ISOM_AVCTYPE_SVC_ONLY , GF_ISOM_AVCTYPE_AVC_MVC , GF_ISOM_AVCTYPE_MVC_ONLY }

enum	GF_ISOMHEVCType { GF_ISOM_HEVCTYPE_NONE =0 , GF_ISOM_HEVCTYPE_HEVC_ONLY , GF_ISOM_HEVCTYPE_HEVC_LHVC , GF_ISOM_HEVCTYPE_LHVC_ONLY }

enum	GF_ISOMVVCType { GF_ISOM_VVCTYPE_NONE =0 , GF_ISOM_VVCTYPE_ONLY , GF_ISOM_VVCTYPE_SUBPIC , GF_ISOM_VVCTYPE_NVCL }

enum	GF_ISONaluExtractMode { GF_ISOM_NALU_EXTRACT_DEFAULT = 0 , GF_ISOM_NALU_EXTRACT_LAYER_ONLY , GF_ISOM_NALU_EXTRACT_INSPECT , GF_ISOM_NALU_EXTRACT_INBAND_PS_FLAG = 1<<16 , GF_ISOM_NALU_EXTRACT_ANNEXB_FLAG = 2<<17 , GF_ISOM_NALU_EXTRACT_VDRD_FLAG = 1<<18 , GF_ISOM_NALU_EXTRACT_TILE_ONLY = 1<<19 }

enum	GF_ISOMLHEVCTrackType { GF_ISOM_LEHVC_ONLY = 0 , GF_ISOM_LEHVC_WITH_BASE , GF_ISOM_LEHVC_WITH_BASE_BACKWARD , GF_ISOM_HEVC_TILE_BASE }

Functions
GF_GenericSampleDescription *	gf_isom_get_generic_sample_description (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex)

GF_Err	gf_isom_get_jp2_config (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, u8 out_dsi, u32 out_size)

GF_Err	gf_isom_get_rvc_config (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, u16 rvc_predefined, u8 *data, u32 size, const char **mime)

GF_Err	gf_isom_set_rvc_config (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, u16 rvc_predefined, char mime, u8 *data, u32 size)

GF_Err	gf_isom_update_video_sample_entry_fields (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, u16 revision, u32 vendor, u32 temporalQ, u32 spatialQ, u32 horiz_res, u32 vert_res, u16 frames_per_sample, const char compressor_name, s16 color_table_index)

GF_Err	gf_isom_update_sample_description_from_template (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, u8 data, u32 size)

GF_Err	gf_isom_new_generic_sample_description (GF_ISOFile isom_file, u32 trackNumber, const char URLname, const char URNname, GF_GenericSampleDescription udesc, u32 *outDescriptionIndex)

GF_Err	gf_isom_clone_sample_description (GF_ISOFile isom_file, u32 trackNumber, GF_ISOFile orig_file, u32 orig_track, u32 orig_desc_index, const char URLname, const char URNname, u32 *outDescriptionIndex)

GF_Err	gf_isom_get_stsd_template (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, u8 output, u32 output_size)

Bool	gf_isom_is_same_sample_description (GF_ISOFile f1, u32 tk1, u32 sdesc_index1, GF_ISOFile f2, u32 tk2, u32 sdesc_index2)

GF_3GPConfig *	gf_isom_3gp_config_get (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex)

GF_Err	gf_isom_3gp_config_new (GF_ISOFile isom_file, u32 trackNumber, GF_3GPConfig config, const char URLname, const char URNname, u32 *outDescriptionIndex)

GF_Err	gf_isom_3gp_config_update (GF_ISOFile isom_file, u32 trackNumber, GF_3GPConfig config, u32 sampleDescriptionIndex)

GF_AVCConfig *	gf_isom_avc_config_get (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex)

GF_AVCConfig *	gf_isom_svc_config_get (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex)

GF_AVCConfig *	gf_isom_mvc_config_get (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex)

GF_ISOMAVCType	gf_isom_get_avc_svc_type (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex)

GF_ISOMHEVCType	gf_isom_get_hevc_lhvc_type (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex)

GF_HEVCConfig *	gf_isom_hevc_config_get (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex)

GF_HEVCConfig *	gf_isom_lhvc_config_get (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex)

GF_ISOMVVCType	gf_isom_get_vvc_type (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex)

GF_VVCConfig *	gf_isom_vvc_config_get (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex)

GF_AV1Config *	gf_isom_av1_config_get (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex)

GF_VPConfig *	gf_isom_vp_config_get (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex)

GF_DOVIDecoderConfigurationRecord *	gf_isom_dovi_config_get (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex)

Bool	gf_isom_needs_layer_reconstruction (GF_ISOFile *isom_file)

GF_Err	gf_isom_set_nalu_extract_mode (GF_ISOFile *isom_file, u32 trackNumber, GF_ISONaluExtractMode nalu_extract_mode)

GF_ISONaluExtractMode	gf_isom_get_nalu_extract_mode (GF_ISOFile *isom_file, u32 trackNumber)

s32	gf_isom_get_composition_offset_shift (GF_ISOFile *isom_file, u32 trackNumber)

GF_Err	gf_isom_avc_config_new (GF_ISOFile isom_file, u32 trackNumber, GF_AVCConfig cfg, const char URLname, const char URNname, u32 *outDescriptionIndex)

GF_Err	gf_isom_avc_config_update (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, GF_AVCConfig cfg)

GF_Err	gf_isom_svc_config_new (GF_ISOFile isom_file, u32 trackNumber, GF_AVCConfig cfg, const char URLname, const char URNname, u32 *outDescriptionIndex)

GF_Err	gf_isom_svc_config_update (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, GF_AVCConfig cfg, Bool is_additional)

GF_Err	gf_isom_svc_config_del (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex)

GF_Err	gf_isom_mvc_config_new (GF_ISOFile isom_file, u32 trackNumber, GF_AVCConfig cfg, const char URLname, const char URNname, u32 *outDescriptionIndex)

GF_Err	gf_isom_mvc_config_update (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, GF_AVCConfig cfg, Bool is_additional)

GF_Err	gf_isom_mvc_config_del (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex)

GF_Err	gf_isom_avc_set_inband_config (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex, Bool keep_xps)

GF_Err	gf_isom_hevc_set_inband_config (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex, Bool keep_xps)

GF_Err	gf_isom_lhvc_force_inband_config (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex)

GF_Err	gf_isom_hevc_set_tile_config (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, GF_HEVCConfig cfg, Bool is_base_track)

GF_Err	gf_isom_hevc_config_new (GF_ISOFile isom_file, u32 trackNumber, GF_HEVCConfig cfg, const char URLname, const char URNname, u32 *outDescriptionIndex)

GF_Err	gf_isom_hevc_config_update (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, GF_HEVCConfig cfg)

GF_Err	gf_isom_lhvc_config_update (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, GF_HEVCConfig cfg, GF_ISOMLHEVCTrackType track_type)

GF_Err	gf_isom_set_nalu_length_field (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex, u32 nalu_size_length)

GF_Err	gf_isom_vvc_config_new (GF_ISOFile isom_file, u32 trackNumber, GF_VVCConfig cfg, const char URLname, const char URNname, u32 *outDescriptionIndex)

GF_Err	gf_isom_vvc_set_inband_config (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex, Bool keep_xps)

GF_Err	gf_isom_vvc_config_update (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, GF_VVCConfig cfg)

GF_Err	gf_isom_vp_config_new (GF_ISOFile isom_file, u32 trackNumber, GF_VPConfig cfg, const char URLname, const char URNname, u32 *outDescriptionIndex, u32 vpx_type)

GF_Err	gf_isom_av1_config_new (GF_ISOFile isom_file, u32 trackNumber, GF_AV1Config cfg, const char URLname, const char URNname, u32 *outDescriptionIndex)

GF_Err	gf_isom_get_dims_description (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, GF_DIMSDescription desc)

GF_Err	gf_isom_new_dims_description (GF_ISOFile isom_file, u32 trackNumber, GF_DIMSDescription desc, const char URLname, const char URNname, u32 *outDescriptionIndex)

GF_Err	gf_isom_get_udts_config (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, GF_UDTSConfig cfg)

GF_AC3Config *	gf_isom_ac3_config_get (GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex)

GF_Err	gf_isom_ac3_config_new (GF_ISOFile isom_file, u32 trackNumber, GF_AC3Config cfg, const char URLname, const char URNname, u32 *outDescriptionIndex)

GF_Err	gf_isom_ac3_config_update (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, GF_AC3Config cfg)

GF_Err	gf_isom_truehd_config_get (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, u32 format_info, u32 *peak_data_rate)

GF_Err	gf_isom_truehd_config_new (GF_ISOFile isom_file, u32 trackNumber, char URLname, char URNname, u32 format_info, u32 peak_data_rate, u32 outDescriptionIndex)

GF_Err	gf_isom_flac_config_get (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, u8 dsi, u32 dsi_size)

GF_Err	gf_isom_flac_config_new (GF_ISOFile isom_file, u32 trackNumber, u8 metadata, u32 metadata_size, const char URLname, const char URNname, u32 *outDescriptionIndex)

GF_Err	gf_isom_opus_config_get (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, u8 dsi, u32 dsi_size)

GF_Err	gf_isom_opus_config_get_desc (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, GF_OpusConfig opcfg)

GF_Err	gf_isom_opus_config_new (GF_ISOFile isom_file, u32 trackNumber, GF_OpusConfig cfg, char URLname, char URNname, u32 *outDescriptionIndex)

GF_Err	gf_isom_new_mj2k_description (GF_ISOFile isom_file, u32 trackNumber, const char URLname, const char URNname, u32 outDescriptionIndex, u8 *dsi, u32 dsi_len)

GF_Err	gf_isom_tmcd_config_new (GF_ISOFile isom_file, u32 trackNumber, u32 fps_num, u32 fps_den, s32 frames_per_counter_tick, Bool is_drop, Bool is_counter, u32 outDescriptionIndex)

GF_Err	gf_isom_get_tmcd_config (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, u32 tmcd_flags, u32 tmcd_fps_num, u32 tmcd_fps_den, u32 *tmcd_fpt)

GF_Err	gf_isom_evte_config_new (GF_ISOFile isom_file, u32 trackNumber, u32 outDescriptionIndex)

GF_Err	gf_isom_get_pcm_config (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, u32 flags, u32 *pcm_size)

GF_Err	gf_isom_get_lpcm_config (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, Double sample_rate, u32 nb_channels, u32 flags, u32 *pcm_size)

GF_Err	gf_isom_new_mpha_description (GF_ISOFile isom_file, u32 trackNumber, const char URLname, const char URNname, u32 outDescriptionIndex, u8 *dsi, u32 dsi_size, u32 mha_subtype)

const u8 *	gf_isom_get_mpegh_compatible_profiles (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, u32 nb_compatible_profiles)

GF_Err	gf_isom_set_mpegh_compatible_profiles (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, const u32 profiles, u32 nb_compatible_profiles)

GF_Err	gf_isom_get_y3d_info (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, GF_ISOM_Y3D_Info info)

GF_Err	gf_isom_set_y3d_info (GF_ISOFile isom_file, u32 trackNumber, u32 sampleDescriptionIndex, GF_ISOM_Y3D_Info info)

Detailed Description

Sample Description functions are used to query and set codec parameters of a track

Data Structure Documentation

◆ GF_GenericSampleDescription

struct GF_GenericSampleDescription

Unknown sample description

Data Fields
u32	codec_tag	codec tag is the containing box's tag, 0 if UUID is used
bin128	UUID	entry UUID if no tag is used
u16	version	codec version
u16	revision	codec revision
u32	vendor_code	vendor four character code
u32	temporal_quality	temporal quality, video codecs only
u32	spatial_quality	spatial quality, video codecs only
u16	width	width in pixels, video codecs only
u16	height	height in pixels, video codecs only
u32	h_res	horizontal resolution as 16.16 fixed point, video codecs only
u32	v_res	vertical resolution as 16.16 fixed point, video codecs only
u16	depth	bit depth resolution in bits, video codecs only
u16	color_table_index	color table, video codecs only
char	compressor_name[33]	compressor name, video codecs only
u32	samplerate	sample rate, audio codecs only
u16	nb_channels	number of channels, audio codecs only
u16	bits_per_sample	bits per sample, audio codecs only
Bool	is_qtff	indicates if QTFF signaling should be used, audio codecs only
u32	lpcm_flags	for lpcm only, indicates format flags
u8 *	extension_buf
u32	extension_buf_size
u32	ext_box_wrap

◆ GF_3GPConfig

struct GF_3GPConfig

Generic 3GP/3GP2 config record

Data Fields
u32	type
u32	vendor
u8	decoder_version
u8	frames_per_sample
u8	H263_level
u8	H263_profile
u16	AMR_mode_set
u8	AMR_mode_change_period

◆ GF_DIMSDescription

struct GF_DIMSDescription

Sample entry description for 3GPP DIMS

Data Fields
u8	profile	profile
u8	level	level
u8	pathComponents	number of components in path
Bool	fullRequestHost	full request
Bool	streamType	stream type
u8	containsRedundant	has redundant sample (carousel)
const char *	textEncoding	text encoding string
const char *	contentEncoding	content encoding string
const char *	content_script_types	script string
const char *	mime_type	mime type string
const char *	xml_schema_loc	xml schema location string

◆ GF_ISOM_Y3D_Info

struct GF_ISOM_Y3D_Info

structure holding youtube 360 video info

cf https://github.com/google/spatial-media/blob/master/docs/spherical-video-v2-rfc.md#stereoscopic-3d-video-box-st3d

Data Fields
u32	stereo_type	stereo type holding youtube 360 video info
u32	projection_type	0: unknown (not present), 1: cube map, 2: EQR, 3: mesh
const char *	meta_data	metadata about 3D software creator
Bool	pose_present	indicate default pause is present
u32	yaw	default pause yaw as 16.16 fixed point
u32	pitch	default pause pitch as 16.16 fixed point
u32	roll	default pause roll as 16.16 fixed point
u32	layout	cube map layout
u32	padding	cube map padding
u32	top	EQR top crop pos in frame, in pixels
u32	bottom	EQR bottom crop pos in frame, in pixels
u32	left	EQR left crop pos in frame, in pixels
u32	right	EQR right crop pos in frame, in pixels

Enumeration Type Documentation

◆ GF_ISOMAVCType

enum GF_ISOMAVCType

AVC familiy type

Enumerator
GF_ISOM_AVCTYPE_NONE	not an AVC codec
GF_ISOM_AVCTYPE_AVC_ONLY	AVC only
GF_ISOM_AVCTYPE_AVC_SVC	AVC+SVC in same track
GF_ISOM_AVCTYPE_SVC_ONLY	SVC only
GF_ISOM_AVCTYPE_AVC_MVC	AVC+MVC in same track
GF_ISOM_AVCTYPE_MVC_ONLY	SVC only

◆ GF_ISOMHEVCType

enum GF_ISOMHEVCType

HEVC family type

Enumerator
GF_ISOM_HEVCTYPE_NONE	not an HEVC codec
GF_ISOM_HEVCTYPE_HEVC_ONLY	HEVC only
GF_ISOM_HEVCTYPE_HEVC_LHVC	HEVC+LHVC in same track
GF_ISOM_HEVCTYPE_LHVC_ONLY	LHVC only

◆ GF_ISOMVVCType

enum GF_ISOMVVCType

VVC family type

Enumerator
GF_ISOM_VVCTYPE_NONE	not an VVC codec
GF_ISOM_VVCTYPE_ONLY	VVC only
GF_ISOM_VVCTYPE_SUBPIC	VVC subpicture track
GF_ISOM_VVCTYPE_NVCL	VVC non-VCL only

◆ GF_ISONaluExtractMode

enum GF_ISONaluExtractMode

NALU extract modes and flags

Enumerator
GF_ISOM_NALU_EXTRACT_DEFAULT	all extractors are rewritten
GF_ISOM_NALU_EXTRACT_LAYER_ONLY	all extractors are skipped but NALU data from this track is kept
GF_ISOM_NALU_EXTRACT_INSPECT	all extractors are kept (untouched sample) - used for dumping modes
GF_ISOM_NALU_EXTRACT_INBAND_PS_FLAG	above mode is applied and PPS/SPS/... are appended in the front of every IDR
GF_ISOM_NALU_EXTRACT_ANNEXB_FLAG	above mode is applied and all start codes are rewritten (xPS inband as well)
GF_ISOM_NALU_EXTRACT_VDRD_FLAG	above mode is applied and VDRD NAL unit is inserted before SVC slice
GF_ISOM_NALU_EXTRACT_TILE_ONLY	all extractors are skipped and only tile track data is kept

◆ GF_ISOMLHEVCTrackType

enum GF_ISOMLHEVCTrackType

Updates L-HHVC config

Enumerator
GF_ISOM_LEHVC_ONLY	changes track type to LHV1/LHE1: no base nor extractors in track, just enhancement layers
GF_ISOM_LEHVC_WITH_BASE	changes track type to HVC2/HEV2: base and extractors/enh. in track
GF_ISOM_LEHVC_WITH_BASE_BACKWARD	changes track type to HVC1/HEV1 with additional cfg: base and enh. in track no extractors
GF_ISOM_HEVC_TILE_BASE	changes track type to HVC2/HEV2 for tile base tracks

Function Documentation

◆ gf_isom_get_generic_sample_description()

GF_GenericSampleDescription* gf_isom_get_generic_sample_description	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex
	)

gets an unknown sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index (1-based)

Returns: generic sample description information, or NULL if error

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◆ gf_isom_get_jp2_config()

GF_Err gf_isom_get_jp2_config	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		u8 **	out_dsi,
		u32 *	out_size
	)

gets the decoder configuration of a JP2 file

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index (1-based)
out_dsi	set to the decoder configuration - shall be freed by user
out_size	set to the decoder configuration size

Returns: error if any

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◆ gf_isom_get_rvc_config()

GF_Err gf_isom_get_rvc_config	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		u16 *	rvc_predefined,
		u8 **	data,
		u32 *	size,
		const char **	mime
	)

gets RVC (Reconvigurable Video Coding) config of a track for a given sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index (1-based)
rvc_predefined	set to a predefined value of RVC
data	set to the RVC config buffer if not predefined, NULL otherwise
size	set to the RVC config buffer size
mime	set to the associated mime type of the stream

Returns: error if any

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◆ gf_isom_set_rvc_config()

GF_Err gf_isom_set_rvc_config	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		u16	rvc_predefined,
		char *	mime,
		u8 *	data,
		u32	size
	)

sets the RVC config for the given track sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track number
sampleDescriptionIndex	the target sample description index
rvc_predefined	the predefined RVC configuration code, 0 if not predefined
mime	the associated mime type of the video
data	the RVC configuration data; ignored if rvc_predefined is not 0
size	the size of the RVC configuration data; ignored if rvc_predefined is not 0

Returns: error if any

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◆ gf_isom_update_video_sample_entry_fields()

GF_Err gf_isom_update_video_sample_entry_fields	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		u16	revision,
		u32	vendor,
		u32	temporalQ,
		u32	spatialQ,
		u32	horiz_res,
		u32	vert_res,
		u16	frames_per_sample,
		const char *	compressor_name,
		s16	color_table_index
	)

updates fields of given visual sample description - these fields are reserved in ISOBMFF, this should only be used for QT, see QTFF

Parameters

isom_file	the target ISO file
trackNumber	the target track number
sampleDescriptionIndex	the target sample description
revision	revision of the sample description format
vendor	four character code of the vendor
temporalQ	temporal quality
spatialQ	spatial quality
horiz_res	horizontal resolution as 16.16 fixed point number
vert_res	vertical resolution as 16.16 fixed point number
frames_per_sample	number of frames per media samples
compressor_name	human readable name for the compressor
color_table_index	color table index, use -1 if no color table (most common case)

Returns: error if any

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◆ gf_isom_update_sample_description_from_template()

GF_Err gf_isom_update_sample_description_from_template	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		u8 *	data,
		u32	size
	)

updates a sample description from a serialized sample description box. Only child boxes are removed in the process

Parameters

isom_file	the target ISO file
trackNumber	the target track number
sampleDescriptionIndex	the target sample description
data	a serialized sample description box
size	size of the serialized sample description

Returns: error if any

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◆ gf_isom_new_generic_sample_description()

GF_Err gf_isom_new_generic_sample_description	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		const char *	URLname,
		const char *	URNname,
		GF_GenericSampleDescription *	udesc,
		u32 *	outDescriptionIndex
	)

creates a new unknown StreamDescription in the file.

Note: use this to store media not currently supported by the ISO media format or media types not implemented in this library

Parameters

isom_file	the target ISO file
trackNumber	the target track
URLname	URL value of the data reference, NULL if no data reference (media in the file)
URNname	URN value of the data reference, NULL if no data reference (media in the file)
udesc	generic sample description information to use
outDescriptionIndex	set to index of the new sample description

Returns: error if any

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◆ gf_isom_clone_sample_description()

GF_Err gf_isom_clone_sample_description	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		GF_ISOFile *	orig_file,
		u32	orig_track,
		u32	orig_desc_index,
		const char *	URLname,
		const char *	URNname,
		u32 *	outDescriptionIndex
	)

clones a sample description without inspecting media types

Parameters

isom_file	the destination ISO file
trackNumber	the destination track
orig_file	the source ISO file
orig_track	the source track
orig_desc_index	the source sample description to clone
URLname	URL value of the data reference, NULL if no data reference (media in the file)
URNname	URN value of the data reference, NULL if no data reference (media in the file)
outDescriptionIndex	set to index of the new sample description

Returns: error if any

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◆ gf_isom_get_stsd_template()

GF_Err gf_isom_get_stsd_template	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		u8 **	output,
		u32 *	output_size
	)

gets the sample description template of a track. This serializes sample description box

Parameters

isom_file	the destination ISO file
trackNumber	the destination track
sampleDescriptionIndex	the target sample description
output	will be set to a newly allocated buffer containing the serialized box - caller shall free it
output_size	will be set to the size of the allocated buffer

Returns: error if any

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◆ gf_isom_is_same_sample_description()

Bool gf_isom_is_same_sample_description	(	GF_ISOFile *	f1,
		u32	tk1,
		u32	sdesc_index1,
		GF_ISOFile *	f2,
		u32	tk2,
		u32	sdesc_index2
	)

checks if sample descriptions are the same. This does include self-contained checking and reserved flags. The specific media cfg (DSI & co) is not analysed, only a memory comparaison is done

Parameters

f1	the first ISO file
tk1	the first track
sdesc_index1	the first sample description
f2	the second ISO file
tk2	the second track
sdesc_index2	the second sample description

Returns: GF_TRUE if sample descriptions match, GF_FALSE otherwise

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◆ gf_isom_3gp_config_get()

GF_3GPConfig* gf_isom_3gp_config_get	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex
	)

gets a 3GPP sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index

Returns: the 3GP config for this sample description, NULL if not a 3GPP track

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◆ gf_isom_3gp_config_new()

GF_Err gf_isom_3gp_config_new	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		GF_3GPConfig *	config,
		const char *	URLname,
		const char *	URNname,
		u32 *	outDescriptionIndex
	)

creates a 3GPP sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
config	the 3GP config for this sample description
URLname	URL value of the data reference, NULL if no data reference (media in the file)
URNname	URN value of the data reference, NULL if no data reference (media in the file)
outDescriptionIndex	set to the index of the created sample description

Returns: error if any

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◆ gf_isom_3gp_config_update()

GF_Err gf_isom_3gp_config_update	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		GF_3GPConfig *	config,
		u32	sampleDescriptionIndex
	)

updates the 3GPP config - subtypes shall NOT differ

Parameters

isom_file	the target ISO file
trackNumber	the target track
config	the 3GP config for this sample description
sampleDescriptionIndex	the target sample description index

Returns: error if any

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◆ gf_isom_avc_config_get()

GF_AVCConfig* gf_isom_avc_config_get	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex
	)

gets AVC config for a sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index

Returns: the AVC config - user is responsible for deleting it

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◆ gf_isom_svc_config_get()

GF_AVCConfig* gf_isom_svc_config_get	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex
	)

gets SVC config for a sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index

Returns: the SVC config - user is responsible for deleting it

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◆ gf_isom_mvc_config_get()

GF_AVCConfig* gf_isom_mvc_config_get	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex
	)

gets MVC config for a sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index

Returns: the SVC config - user is responsible for deleting it

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◆ gf_isom_get_avc_svc_type()

GF_ISOMAVCType gf_isom_get_avc_svc_type	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex
	)

gets the AVC family type for a sample description

Parameters

isom_file	the target ISO file
trackNumber	the target hint track
sampleDescriptionIndex	the target sample description index

Returns: the type of AVC media

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◆ gf_isom_get_hevc_lhvc_type()

GF_ISOMHEVCType gf_isom_get_hevc_lhvc_type	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex
	)

gets the HEVC family type for a sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index

Returns: the type of HEVC media

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◆ gf_isom_hevc_config_get()

GF_HEVCConfig* gf_isom_hevc_config_get	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex
	)

gets HEVC config for a sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index

Returns: the HEVC config - user is responsible for deleting it

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◆ gf_isom_lhvc_config_get()

GF_HEVCConfig* gf_isom_lhvc_config_get	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex
	)

gets LHVC config for a sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index

Returns: the LHVC config - user is responsible for deleting it

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◆ gf_isom_get_vvc_type()

GF_ISOMVVCType gf_isom_get_vvc_type	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex
	)

gets the VVC family type for a sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index

Returns: the type of VVC media

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◆ gf_isom_vvc_config_get()

GF_VVCConfig* gf_isom_vvc_config_get	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex
	)

gets VVC config for a sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index

Returns: the VVC config - user is responsible for deleting it

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◆ gf_isom_av1_config_get()

GF_AV1Config* gf_isom_av1_config_get	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex
	)

gets AV1 config for a sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index

Returns: the AV1 config - user is responsible for deleting it

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◆ gf_isom_vp_config_get()

GF_VPConfig* gf_isom_vp_config_get	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex
	)

gets VP8/9 config for a sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index

Returns: the VP8/9 config - user is responsible for deleting it

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◆ gf_isom_dovi_config_get()

GF_DOVIDecoderConfigurationRecord* gf_isom_dovi_config_get	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex
	)

gets DOVI config for a sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index

Returns: the DOVI config - user is responsible for deleting it

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◆ gf_isom_needs_layer_reconstruction()

Bool gf_isom_needs_layer_reconstruction ( GF_ISOFile * isom_file )

checks if some tracks in file needs layer reconstruction

Parameters

isom_file the target ISO file

Returns: GF_TRUE if track dependencies implying extractors or implicit reconstruction are found, GF_FALSE otherwise

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◆ gf_isom_set_nalu_extract_mode()

GF_Err gf_isom_set_nalu_extract_mode	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		GF_ISONaluExtractMode	nalu_extract_mode
	)

sets the NALU extraction mode for this track

Parameters

isom_file	the target ISO file
trackNumber	the target track
nalu_extract_mode	the NALU extraction mode to set

Returns: error if any

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◆ gf_isom_get_nalu_extract_mode()

GF_ISONaluExtractMode gf_isom_get_nalu_extract_mode	(	GF_ISOFile *	isom_file,
		u32	trackNumber
	)

gets the NALU extraction mode for this track

Parameters

isom_file	the target ISO file
trackNumber	the target track

Returns: the NALU extraction mode used

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◆ gf_isom_get_composition_offset_shift()

s32 gf_isom_get_composition_offset_shift	(	GF_ISOFile *	isom_file,
		u32	trackNumber
	)

gets the composition offset shift if any for track using negative ctts

Parameters

isom_file	the target ISO file
trackNumber	the target track

Returns: the composition offset shift or 0

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◆ gf_isom_avc_config_new()

GF_Err gf_isom_avc_config_new	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		GF_AVCConfig *	cfg,
		const char *	URLname,
		const char *	URNname,
		u32 *	outDescriptionIndex
	)

creates a new AVC sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
cfg	the AVC config for this sample description
URLname	URL value of the data reference, NULL if no data reference (media in the file)
URNname	URN value of the data reference, NULL if no data reference (media in the file)
outDescriptionIndex	set to the index of the created sample description

Returns: error if any

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◆ gf_isom_avc_config_update()

GF_Err gf_isom_avc_config_update	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		GF_AVCConfig *	cfg
	)

updates an AVC sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index to update
cfg	the AVC config for this sample description

Returns: error if any

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◆ gf_isom_svc_config_new()

GF_Err gf_isom_svc_config_new	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		GF_AVCConfig *	cfg,
		const char *	URLname,
		const char *	URNname,
		u32 *	outDescriptionIndex
	)

creates a new SVC sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
cfg	the SVC config for this sample description
URLname	URL value of the data reference, NULL if no data reference (media in the file)
URNname	URN value of the data reference, NULL if no data reference (media in the file)
outDescriptionIndex	set to the index of the created sample description

Returns: error if any

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◆ gf_isom_svc_config_update()

GF_Err gf_isom_svc_config_update	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		GF_AVCConfig *	cfg,
		Bool	is_additional
	)

updates an SVC sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index to update
cfg	the AVC config for this sample description
is_additional	if set, the SVCConfig will be added to the AVC sample description, otherwise the sample description will be SVC-only

Returns: error if any

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◆ gf_isom_svc_config_del()

GF_Err gf_isom_svc_config_del	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex
	)

deletes an SVC sample description

Warning: Associated samples if any are NOT deleted

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index to delete

Returns: error if any

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◆ gf_isom_mvc_config_new()

GF_Err gf_isom_mvc_config_new	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		GF_AVCConfig *	cfg,
		const char *	URLname,
		const char *	URNname,
		u32 *	outDescriptionIndex
	)

creates a new MVC sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
cfg	the SVC config for this sample description
URLname	URL value of the data reference, NULL if no data reference (media in the file)
URNname	URN value of the data reference, NULL if no data reference (media in the file)
outDescriptionIndex	set to the index of the created sample description

Returns: error if any

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◆ gf_isom_mvc_config_update()

GF_Err gf_isom_mvc_config_update	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		GF_AVCConfig *	cfg,
		Bool	is_additional
	)

updates an MVC sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index to update
cfg	the AVC config for this sample description
is_additional	if set, the MVCConfig will be added to the AVC sample description, otherwise the sample description will be MVC-only

Returns: error if any

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◆ gf_isom_mvc_config_del()

GF_Err gf_isom_mvc_config_del	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex
	)

deletes an MVC sample description

Warning: Associated samples if any are NOT deleted

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index to delete

Returns: error if any

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◆ gf_isom_avc_set_inband_config()

GF_Err gf_isom_avc_set_inband_config	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		Bool	keep_xps
	)

sets avc3 entry type (inband SPS/PPS) instead of avc1 (SPS/PPS in avcC box)

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index
keep_xps	if set to GF_TRUE, keeps parameter set in the configuration record otherwise removes them

Returns: error if any

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◆ gf_isom_hevc_set_inband_config()

GF_Err gf_isom_hevc_set_inband_config	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		Bool	keep_xps
	)

sets hev1 entry type (inband SPS/PPS) instead of hvc1 (SPS/PPS in hvcC box)

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index
keep_xps	if set to GF_TRUE, keeps parameter set in the configuration record otherwise removes them

Returns: error if any

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◆ gf_isom_lhvc_force_inband_config()

GF_Err gf_isom_lhvc_force_inband_config	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex
	)

sets lhe1 entry type instead of lhc1 but keep lhcC box intact

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index

Returns: error if any

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◆ gf_isom_hevc_set_tile_config()

GF_Err gf_isom_hevc_set_tile_config	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		GF_HEVCConfig *	cfg,
		Bool	is_base_track
	)

sets hvt1 entry type (tile track) or hev2/hvc2 type if is_base_track is set. It is the use responsibility to set the tbas track reference to the base hevc track

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index
cfg	may be set to the tile track configuration to indicate sub-profile of the tile, or NULL
is_base_track	if set to GF_TRUE, indicates this is a tile base track, otherwise this is a tile track

Returns: error if any

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◆ gf_isom_hevc_config_new()

GF_Err gf_isom_hevc_config_new	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		GF_HEVCConfig *	cfg,
		const char *	URLname,
		const char *	URNname,
		u32 *	outDescriptionIndex
	)

creates a new HEVC sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
cfg	the HEVC config for this sample description
URLname	URL value of the data reference, NULL if no data reference (media in the file)
URNname	URN value of the data reference, NULL if no data reference (media in the file)
outDescriptionIndex	set to the index of the created sample description

Returns: error if any

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◆ gf_isom_hevc_config_update()

GF_Err gf_isom_hevc_config_update	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		GF_HEVCConfig *	cfg
	)

updates an HEVC sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index to update
cfg	the HEVC config for this sample description

Returns: error if any

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◆ gf_isom_lhvc_config_update()

GF_Err gf_isom_lhvc_config_update	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		GF_HEVCConfig *	cfg,
		GF_ISOMLHEVCTrackType	track_type
	)

updates an HEVC sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index to update
cfg	the LHVC config for this sample description
track_type	indicates the LHVC track type to set

Returns: error if any

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◆ gf_isom_set_nalu_length_field()

GF_Err gf_isom_set_nalu_length_field	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		u32	nalu_size_length
	)

sets nalu size length

Warning: Any previously added samples must be rewritten by the caller

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index to update
nalu_size_length	the new NALU size length in bytes

Returns: error if any

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◆ gf_isom_vvc_config_new()

GF_Err gf_isom_vvc_config_new	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		GF_VVCConfig *	cfg,
		const char *	URLname,
		const char *	URNname,
		u32 *	outDescriptionIndex
	)

creates a new VVC sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
cfg	the VVC config for this sample description
URLname	URL value of the data reference, NULL if no data reference (media in the file)
URNname	URN value of the data reference, NULL if no data reference (media in the file)
outDescriptionIndex	set to the index of the created sample description

Returns: error if any

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◆ gf_isom_vvc_set_inband_config()

GF_Err gf_isom_vvc_set_inband_config	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		Bool	keep_xps
	)

sets vvi1 entry type (inband SPS/PPS) instead of vvc1 (SPS/PPS in hvcC box)

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index
keep_xps	if set to GF_TRUE, keeps parameter set in the configuration record otherwise removes them

Returns: error if any

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◆ gf_isom_vvc_config_update()

GF_Err gf_isom_vvc_config_update	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		GF_VVCConfig *	cfg
	)

updates vvcC configuration

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index
cfg	new config to set

Returns: error if any

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◆ gf_isom_vp_config_new()

GF_Err gf_isom_vp_config_new	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		GF_VPConfig *	cfg,
		const char *	URLname,
		const char *	URNname,
		u32 *	outDescriptionIndex,
		u32	vpx_type
	)

creates new VPx config

Parameters

isom_file	the target ISO file
trackNumber	the target track
cfg	the VPx config for this sample description
URLname	URL value of the data reference, NULL if no data reference (media in the file)
URNname	URN value of the data reference, NULL if no data reference (media in the file)
outDescriptionIndex	set to the index of the created sample description
vpx_type	four character code of entry ('vp08', 'vp09' or 'vp10')

Returns: error if any

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◆ gf_isom_av1_config_new()

GF_Err gf_isom_av1_config_new	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		GF_AV1Config *	cfg,
		const char *	URLname,
		const char *	URNname,
		u32 *	outDescriptionIndex
	)

creates new AV1 config

Parameters

isom_file	the target ISO file
trackNumber	the target track
cfg	the AV1 config for this sample description
URLname	URL value of the data reference, NULL if no data reference (media in the file)
URNname	URN value of the data reference, NULL if no data reference (media in the file)
outDescriptionIndex	set to the index of the created sample description

Returns: error if any

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◆ gf_isom_get_dims_description()

GF_Err gf_isom_get_dims_description	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		GF_DIMSDescription *	desc
	)

gets a DIMS sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index
desc	set to the DIMS description

Returns: error if any

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◆ gf_isom_new_dims_description()

GF_Err gf_isom_new_dims_description	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		GF_DIMSDescription *	desc,
		const char *	URLname,
		const char *	URNname,
		u32 *	outDescriptionIndex
	)

creates a DIMS sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
desc	the DIMS config for this sample description
URLname	URL value of the data reference, NULL if no data reference (media in the file)
URNname	URN value of the data reference, NULL if no data reference (media in the file)
outDescriptionIndex	set to the index of the created sample description

Returns: error if any

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◆ gf_isom_get_udts_config()

GF_Err gf_isom_get_udts_config	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		GF_UDTSConfig *	cfg
	)

gets a UDTS Specific Configuration sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index
cfg	set to the UDTS Specific Configuration

Returns: error if any

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◆ gf_isom_ac3_config_get()

GF_AC3Config* gf_isom_ac3_config_get	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex
	)

gets an AC3 sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index

Returns: AC-3 config

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◆ gf_isom_ac3_config_new()

GF_Err gf_isom_ac3_config_new	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		GF_AC3Config *	cfg,
		const char *	URLname,
		const char *	URNname,
		u32 *	outDescriptionIndex
	)

creates an AC3 or EAC3 sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
cfg	the AC3 config for this sample description
URLname	URL value of the data reference, NULL if no data reference (media in the file)
URNname	URN value of the data reference, NULL if no data reference (media in the file)
outDescriptionIndex	set to the index of the created sample description

Returns: error if any

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◆ gf_isom_ac3_config_update()

GF_Err gf_isom_ac3_config_update	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		GF_AC3Config *	cfg
	)

updates an AC3 or EAC3 sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index
cfg	the AC3 config for this sample description

Returns: error if any

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◆ gf_isom_truehd_config_get()

GF_Err gf_isom_truehd_config_get	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		u32 *	format_info,
		u32 *	peak_data_rate
	)

gets TrueHD sample description info

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index
format_info	set to the format info - may be NULL
peak_data_rate	set to the peak data rate info - may be NULL

Returns: error if any

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◆ gf_isom_truehd_config_new()

GF_Err gf_isom_truehd_config_new	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		char *	URLname,
		char *	URNname,
		u32	format_info,
		u32	peak_data_rate,
		u32 *	outDescriptionIndex
	)

creates a TrueHD sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
URLname	URL value of the data reference, NULL if no data reference (media in the file)
URNname	URN value of the data reference, NULL if no data reference (media in the file)
format_info	TrueHD format info
peak_data_rate	TrueHD peak data rate
outDescriptionIndex	set to the index of the created sample description

Returns: error if any

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◆ gf_isom_flac_config_get()

GF_Err gf_isom_flac_config_get	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		u8 **	dsi,
		u32 *	dsi_size
	)

gets a FLAC sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index
dsi	set to the flac decoder config - shall be freeed by caller
dsi_size	set to the size of the flac decoder config

Returns: error if any

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◆ gf_isom_flac_config_new()

GF_Err gf_isom_flac_config_new	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u8 *	metadata,
		u32	metadata_size,
		const char *	URLname,
		const char *	URNname,
		u32 *	outDescriptionIndex
	)

creates a FLAC sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
metadata	the flac decoder config buffer
metadata_size	the size of flac decoder config
URLname	URL value of the data reference, NULL if no data reference (media in the file)
URNname	URN value of the data reference, NULL if no data reference (media in the file)
outDescriptionIndex	set to the index of the created sample description

Returns: error if any

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◆ gf_isom_opus_config_get()

GF_Err gf_isom_opus_config_get	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		u8 **	dsi,
		u32 *	dsi_size
	)

gets a OPUS sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index
dsi	set to the OPUS decoder config (without OpusHead tag), may be NULL - shall be freeed by caller
dsi_size	set to the size of the OPUS decoder config, may be NULL

Returns: error if any

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◆ gf_isom_opus_config_get_desc()

GF_Err gf_isom_opus_config_get_desc	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		GF_OpusConfig *	opcfg
	)

gets a OPUS sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index
opcfg	opus config to get

Returns: error if any

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◆ gf_isom_opus_config_new()

GF_Err gf_isom_opus_config_new	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		GF_OpusConfig *	cfg,
		char *	URLname,
		char *	URNname,
		u32 *	outDescriptionIndex
	)

creates a new opus sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
cfg	the opus stream configuration
URLname	URL value of the data reference, NULL if no data reference (media in the file)
URNname	URN value of the data reference, NULL if no data reference (media in the file)
outDescriptionIndex	set to the index of the created sample description

Returns: error if any

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◆ gf_isom_new_mj2k_description()

GF_Err gf_isom_new_mj2k_description	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		const char *	URLname,
		const char *	URNname,
		u32 *	outDescriptionIndex,
		u8 *	dsi,
		u32	dsi_len
	)

creates a motion jpeg 2000 sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
URLname	URL value of the data reference, NULL if no data reference (media in the file)
URNname	URN value of the data reference, NULL if no data reference (media in the file)
outDescriptionIndex	set to the index of the created sample description
dsi	the jpeg2000 decoder config buffer
dsi_len	the size of jpeg2000 decoder config

Returns: error if any

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◆ gf_isom_tmcd_config_new()

GF_Err gf_isom_tmcd_config_new	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	fps_num,
		u32	fps_den,
		s32	frames_per_counter_tick,
		Bool	is_drop,
		Bool	is_counter,
		u32 *	outDescriptionIndex
	)

creates a time code metadata sample description

Note: frames_per_counter_tick<0 disables counter flag but signals frames_per_tick

Parameters

isom_file	the target ISO file
trackNumber	the target track
fps_num	the frame rate numerator
fps_den	the frame rate denumerator (frame rate numerator will be track media timescale)
frames_per_counter_tick	if not 0, enables counter mode (sample data is an counter) and use this value as number of frames per counter tick. Otherwise, disables counter mode (sample data write h,m,s,frames)
is_drop	indicates that the time code in samples is a drop timecode
is_counter	indicates that the counter flag should be set
outDescriptionIndex	set to the index of the created sample description

Returns: error if any

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◆ gf_isom_get_tmcd_config()

GF_Err gf_isom_get_tmcd_config	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		u32 *	tmcd_flags,
		u32 *	tmcd_fps_num,
		u32 *	tmcd_fps_den,
		u32 *	tmcd_fpt
	)

gets information of a time code metadata sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index
tmcd_flags	set to the timecode description flags
tmcd_fps_num	set to fps numerator of timecode description
tmcd_fps_den	set to fps denominator of timecode description
tmcd_fpt	set to the ticks per second for counter mode (tmcd_flags & 0x1)

Returns: error if any

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◆ gf_isom_evte_config_new()

GF_Err gf_isom_evte_config_new	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32 *	outDescriptionIndex
	)

creates an event message track metadata sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
outDescriptionIndex	set to the index of the created sample description

Returns: error if any

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◆ gf_isom_get_pcm_config()

GF_Err gf_isom_get_pcm_config	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		u32 *	flags,
		u32 *	pcm_size
	)

gets information of a raw PCM sample description, ISOBMFF style

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index
flags	set to the pcm config flags (0: big endian, 1: little endian), may be NULL
pcm_size	set to PCM sample size (per channel, 16, 24, 32, 64, may be NULL

Returns: error if any

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◆ gf_isom_get_lpcm_config()

GF_Err gf_isom_get_lpcm_config	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		Double *	sample_rate,
		u32 *	nb_channels,
		u32 *	flags,
		u32 *	pcm_size
	)

gets information of a raw PCM sample description, QT style (lpcm codecid)

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index
sample_rate	set to the pcm sample rate, may be NULL
nb_channels	set to the pcm channel count, may be NULL
flags	set to the pcm config flags (1: float, 2: big endian, 4: signed, other flags cf QTFF), may be NULL
pcm_size	set to PCM sample size (per channel, 16, 24, 32, 64, may be NULL

Returns: error if any

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◆ gf_isom_new_mpha_description()

GF_Err gf_isom_new_mpha_description	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		const char *	URLname,
		const char *	URNname,
		u32 *	outDescriptionIndex,
		u8 *	dsi,
		u32	dsi_size,
		u32	mha_subtype
	)

creates a MPHA sample description

Parameters

isom_file	the target ISO file
trackNumber	the target track
URLname	URL value of the data reference, NULL if no data reference (media in the file)
URNname	URN value of the data reference, NULL if no data reference (media in the file)
outDescriptionIndex	set to the index of the created sample description
dsi	the MPEGH audio config (payload of mhaC box): byte[0]=1 (config version) ,byte[1]=ProfileLevel, byte[2]=channel layout, byte[3],byte[4]: the size of what follows the rest being a mpegh3daConfig
dsi_size	the size of the MPEGH audio config
mha_subtype	mha1/mha2:/mhm1/mhm2 subtype to use

Returns: error if any

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◆ gf_isom_get_mpegh_compatible_profiles()

const u8* gf_isom_get_mpegh_compatible_profiles	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		u32 *	nb_compatible_profiles
	)

gets compatible profile list for mpegh entry

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index
nb_compatible_profiles	set to the number of compatible profiles returned

Returns: array of compatible profiles, NULL if none found

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◆ gf_isom_set_mpegh_compatible_profiles()

GF_Err gf_isom_set_mpegh_compatible_profiles	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		const u32 *	profiles,
		u32	nb_compatible_profiles
	)

sets compatible profile list for mpegh entry

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index
profiles	array of compatible profiles, NULL to remove compatible profiles
nb_compatible_profiles	number of compatible profiles in list, 0 to remove compatible profiles

Returns: error if any

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◆ gf_isom_get_y3d_info()

GF_Err gf_isom_get_y3d_info	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		GF_ISOM_Y3D_Info *	info
	)

gets youtube 3D/360 info

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index
info	filled with 3D info

Returns: error if any, GF_NOT_FOUND if no 3D/360 or setero info

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◆ gf_isom_set_y3d_info()

GF_Err gf_isom_set_y3d_info	(	GF_ISOFile *	isom_file,
		u32	trackNumber,
		u32	sampleDescriptionIndex,
		GF_ISOM_Y3D_Info *	info
	)

sets youtube 3D/360 info

Parameters

isom_file	the target ISO file
trackNumber	the target track
sampleDescriptionIndex	the target sample description index
info	3D info to set

Returns: error if any

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Data Structures

Enumerations

Functions

Detailed Description

Data Structure Documentation

◆ GF_GenericSampleDescription

◆ GF_3GPConfig

◆ GF_DIMSDescription

◆ GF_ISOM_Y3D_Info

Enumeration Type Documentation

◆ GF_ISOMAVCType

◆ GF_ISOMHEVCType

◆ GF_ISOMVVCType

◆ GF_ISONaluExtractMode

◆ GF_ISOMLHEVCTrackType

Function Documentation

◆ gf_isom_get_generic_sample_description()

◆ gf_isom_get_jp2_config()

◆ gf_isom_get_rvc_config()

◆ gf_isom_set_rvc_config()

◆ gf_isom_update_video_sample_entry_fields()

◆ gf_isom_update_sample_description_from_template()

◆ gf_isom_new_generic_sample_description()

◆ gf_isom_clone_sample_description()

◆ gf_isom_get_stsd_template()

◆ gf_isom_is_same_sample_description()

◆ gf_isom_3gp_config_get()

◆ gf_isom_3gp_config_new()

◆ gf_isom_3gp_config_update()

◆ gf_isom_avc_config_get()

◆ gf_isom_svc_config_get()

◆ gf_isom_mvc_config_get()

◆ gf_isom_get_avc_svc_type()

◆ gf_isom_get_hevc_lhvc_type()

◆ gf_isom_hevc_config_get()

◆ gf_isom_lhvc_config_get()

◆ gf_isom_get_vvc_type()

◆ gf_isom_vvc_config_get()

◆ gf_isom_av1_config_get()

◆ gf_isom_vp_config_get()

◆ gf_isom_dovi_config_get()

◆ gf_isom_needs_layer_reconstruction()

◆ gf_isom_set_nalu_extract_mode()

◆ gf_isom_get_nalu_extract_mode()

◆ gf_isom_get_composition_offset_shift()

◆ gf_isom_avc_config_new()

◆ gf_isom_avc_config_update()

◆ gf_isom_svc_config_new()

◆ gf_isom_svc_config_update()

◆ gf_isom_svc_config_del()

◆ gf_isom_mvc_config_new()

◆ gf_isom_mvc_config_update()

◆ gf_isom_mvc_config_del()

◆ gf_isom_avc_set_inband_config()

◆ gf_isom_hevc_set_inband_config()

◆ gf_isom_lhvc_force_inband_config()

◆ gf_isom_hevc_set_tile_config()

◆ gf_isom_hevc_config_new()

◆ gf_isom_hevc_config_update()

◆ gf_isom_lhvc_config_update()

◆ gf_isom_set_nalu_length_field()

◆ gf_isom_vvc_config_new()

◆ gf_isom_vvc_set_inband_config()

◆ gf_isom_vvc_config_update()

◆ gf_isom_vp_config_new()

◆ gf_isom_av1_config_new()

◆ gf_isom_get_dims_description()

◆ gf_isom_new_dims_description()

◆ gf_isom_get_udts_config()

◆ gf_isom_ac3_config_get()

◆ gf_isom_ac3_config_new()

◆ gf_isom_ac3_config_update()

◆ gf_isom_truehd_config_get()

◆ gf_isom_truehd_config_new()

◆ gf_isom_flac_config_get()

◆ gf_isom_flac_config_new()

◆ gf_isom_opus_config_get()

◆ gf_isom_opus_config_get_desc()

◆ gf_isom_opus_config_new()

◆ gf_isom_new_mj2k_description()